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-rw-r--r--.gitignore83
-rw-r--r--.gitreview3
-rw-r--r--.mailmap12
-rw-r--r--AUTHORS9
-rw-r--r--COPYING661
-rw-r--r--Makefile.am34
-rw-r--r--README28
-rw-r--r--README.vty-tests11
-rw-r--r--TODO-RELEASE26
-rw-r--r--configure.ac142
-rw-r--r--contrib/Makefile.am1
-rwxr-xr-xcontrib/ipa.py278
-rwxr-xr-xcontrib/jenkins.sh49
-rwxr-xr-xcontrib/mgcp_server.py60
-rw-r--r--contrib/systemd/osmo-bsc-mgcp.service11
-rw-r--r--doc/Makefile.am3
-rw-r--r--doc/examples/Makefile.am22
-rw-r--r--doc/examples/osmo-bsc_mgcp/mgcp.cfg14
-rw-r--r--doc/examples/osmo-mgw/osmo-mgw.cfg13
-rwxr-xr-xgit-version-gen151
-rw-r--r--include/Makefile.am15
-rw-r--r--include/osmocom/Makefile.am5
-rw-r--r--include/osmocom/legacy_mgcp/Makefile.am4
-rw-r--r--include/osmocom/legacy_mgcp/mgcp.h292
-rw-r--r--include/osmocom/legacy_mgcp/mgcp_internal.h337
-rw-r--r--include/osmocom/legacy_mgcp/mgcp_transcode.h90
-rw-r--r--include/osmocom/legacy_mgcp/osmux.h41
-rw-r--r--include/osmocom/legacy_mgcp/vty.h31
-rw-r--r--include/osmocom/mgcp/Makefile.am9
-rw-r--r--include/osmocom/mgcp/debug.h35
-rw-r--r--include/osmocom/mgcp/mgcp.h236
-rw-r--r--include/osmocom/mgcp/mgcp_common.h71
-rw-r--r--include/osmocom/mgcp/mgcp_conn.h40
-rw-r--r--include/osmocom/mgcp/mgcp_ep.h50
-rw-r--r--include/osmocom/mgcp/mgcp_internal.h321
-rw-r--r--include/osmocom/mgcp/mgcp_msg.h58
-rw-r--r--include/osmocom/mgcp/mgcp_sdp.h35
-rw-r--r--include/osmocom/mgcp/mgcp_stat.h37
-rw-r--r--include/osmocom/mgcp/osmux.h38
-rw-r--r--include/osmocom/mgcp/vty.h31
-rw-r--r--include/osmocom/mgcp_client/Makefile.am13
-rw-r--r--include/osmocom/mgcp_client/mgcp_client.h118
-rw-r--r--include/osmocom/mgcp_client/mgcp_client_internal.h35
-rw-r--r--libosmo-legacy-mgcp.pc.in10
-rw-r--r--libosmo-mgcp-client.pc.in10
-rw-r--r--libosmo-mgcp.pc.in10
-rw-r--r--m4/README3
-rw-r--r--m4/ax_check_compile_flag.m474
-rw-r--r--osmoappdesc.py30
-rw-r--r--src/Makefile.am33
-rw-r--r--src/libosmo-legacy-mgcp/Makefile.am51
-rw-r--r--src/libosmo-legacy-mgcp/g711common.h187
-rw-r--r--src/libosmo-legacy-mgcp/mgcp_common.c54
-rw-r--r--src/libosmo-legacy-mgcp/mgcp_network.c1166
-rw-r--r--src/libosmo-legacy-mgcp/mgcp_osmux.c583
-rw-r--r--src/libosmo-legacy-mgcp/mgcp_protocol.c1640
-rw-r--r--src/libosmo-legacy-mgcp/mgcp_sdp.c305
-rw-r--r--src/libosmo-legacy-mgcp/mgcp_transcode.c611
-rw-r--r--src/libosmo-legacy-mgcp/mgcp_vty.c1553
-rw-r--r--src/libosmo-mgcp-client/Makefile.am34
-rw-r--r--src/libosmo-mgcp-client/mgcp_client.c766
-rw-r--r--src/libosmo-mgcp-client/mgcp_client_vty.c206
-rw-r--r--src/libosmo-mgcp/Makefile.am46
-rw-r--r--src/libosmo-mgcp/g711common.h187
-rw-r--r--src/libosmo-mgcp/mgcp_conn.c287
-rw-r--r--src/libosmo-mgcp/mgcp_ep.c32
-rw-r--r--src/libosmo-mgcp/mgcp_msg.c405
-rw-r--r--src/libosmo-mgcp/mgcp_network.c1264
-rw-r--r--src/libosmo-mgcp/mgcp_osmux.c692
-rw-r--r--src/libosmo-mgcp/mgcp_protocol.c1293
-rw-r--r--src/libosmo-mgcp/mgcp_sdp.c409
-rw-r--r--src/libosmo-mgcp/mgcp_stat.c128
-rw-r--r--src/libosmo-mgcp/mgcp_vty.c1306
-rw-r--r--src/osmo-bsc_mgcp/Makefile.am29
-rw-r--r--src/osmo-bsc_mgcp/mgcp_main.c351
-rw-r--r--src/osmo-mgw/Makefile.am26
-rw-r--r--src/osmo-mgw/mgw_main.c356
-rw-r--r--tests/Makefile.am64
-rw-r--r--tests/atlocal.in7
-rw-r--r--tests/legacy_mgcp/Makefile.am61
-rw-r--r--tests/legacy_mgcp/mgcp_test.c1236
-rw-r--r--tests/legacy_mgcp/mgcp_test.ok480
-rw-r--r--tests/legacy_mgcp/mgcp_transcoding_test.c661
-rw-r--r--tests/legacy_mgcp/mgcp_transcoding_test.ok539
-rw-r--r--tests/mgcp/Makefile.am38
-rw-r--r--tests/mgcp/mgcp_test.c1353
-rw-r--r--tests/mgcp/mgcp_test.ok471
-rw-r--r--tests/mgcp_client/Makefile.am39
-rw-r--r--tests/mgcp_client/mgcp_client_test.c255
-rw-r--r--tests/mgcp_client/mgcp_client_test.err2
-rw-r--r--tests/mgcp_client/mgcp_client_test.ok62
-rw-r--r--tests/testsuite.at28
-rw-r--r--tests/vty_test_runner.py171
93 files changed, 23157 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a9e6b84
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,83 @@
+debian/*.log
+*.o
+*.lo
+*.a
+.deps
+Makefile
+Makefile.in
+bscconfig.h
+bscconfig.h.in
+openbsc.pc
+src/osmo-nitb/osmo-nitb
+src/osmo-bsc_mgcp/osmo-bsc_mgcp
+src/osmo-bsc/osmo-bsc
+src/utils/meas_vis
+src/utils/meas_json
+src/utils/osmo-meas-pcap2db
+src/utils/osmo-meas-udp2db
+src/utils/smpp_mirror
+*.*~
+*.sw?
+.libs
+*.pyc
+*.gcda
+*.gcno
+
+#configure
+aclocal.m4
+autom4te.cache/
+config.log
+config.status
+config.guess
+config.sub
+configure
+compile
+depcomp
+install-sh
+missing
+stamp-h1
+libtool
+ltmain.sh
+
+# git-version-gen magic
+.tarball-version
+.version
+
+
+# apps and app data
+hlr.sqlite3
+src/utils/bs11_config
+src/ipaccess/ipaccess-config
+src/ipaccess/abisip-find
+src/ipaccess/ipaccess-firmware
+src/ipaccess/ipaccess-proxy
+src/utils/isdnsync
+src/nat/bsc_nat
+src/gprs/osmo-sgsn
+src/gprs/osmo-gbproxy
+src/gprs/osmo-gtphub
+src/osmo-bsc_nat/osmo-bsc_nat
+src/libcommon/gsup_test_client
+src/osmo-msc/osmo-msc
+
+#tests
+tests/testsuite.dir
+tests/*/*_test
+# ignore compiled binaries like msc_vlr_test_foo; do not ignore
+# msc_vlr_test_foo.{c,ok,err}, but do still ignore the corresponding .o object
+# files:
+tests/msc_vlr/msc_vlr_test_*
+!tests/msc_vlr/msc_vlr_test_*.*
+tests/msc_vlr/msc_vlr_test_*.o
+
+
+tests/atconfig
+tests/atlocal
+tests/package.m4
+tests/testsuite
+tests/testsuite.log
+
+gsn_restart
+src/openbsc.cfg*
+writtenconfig/
+gtphub_restart_count
diff --git a/.gitreview b/.gitreview
new file mode 100644
index 0000000..1f71dcf
--- /dev/null
+++ b/.gitreview
@@ -0,0 +1,3 @@
+[gerrit]
+host=gerrit.osmocom.org
+project=osmo-mgw
diff --git a/.mailmap b/.mailmap
new file mode 100644
index 0000000..cda4057
--- /dev/null
+++ b/.mailmap
@@ -0,0 +1,12 @@
+Harald Welte <laforge@gnumonks.org>
+Harald Welte <laforge@gnumonks.org> <laflocal@hanuman.gnumonks.org>
+Harald Welte <laforge@gnumonks.org> <laflocal@goeller.de.gnumonks.org>
+Holger Hans Peter Freyther <holger@moiji-mobile.com> <zecke@selfish.org>
+Holger Hans Peter Freyther <holger@moiji-mobile.com> <ich@tamarin.(none)>
+Holger Hans Peter Freyther <holgre@moiji-mobile.com> <holger@freyther.de>
+Andreas Eversberg <jolly@eversberg.eu>
+Andreas Eversberg <jolly@eversberg.eu> <Andreas.Eversberg@versatel.de>
+Andreas Eversberg <jolly@eversberg.eu> <root@nuedel.(none)>
+Pablo Neira Ayuso <pablo@soleta.eu> <pablo@gnumonks.org>
+Max Suraev <msuraev@sysmocom.de>
+Tom Tsou <tom.tsou@ettus.com> <tom@tsou.cc>
diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..91af515
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1,9 @@
+Harald Welte <laforge@gnumonks.org>
+Holger Freyther <zecke@selfish.org>
+Jan Luebbe <jluebbe@debian.org>
+Stefan Schmidt <stefan@datenfreihafen.org>
+Daniel Willmann <daniel@totalueberwachung.de>
+Andreas Eversberg <Andreas.Eversberg@versatel.de>
+Sylvain Munaut <246tnt@gmail.com>
+Jacob Erlbeck <jerlbeck@sysmocom.de>
+Neels Hofmeyr <nhofmeyr@sysmocom.de>
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..dba13ed
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,661 @@
+ GNU AFFERO GENERAL PUBLIC LICENSE
+ Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The GNU Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
+
+ The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works. By contrast,
+our General Public Licenses are intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
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+ When we speak of free software, we are referring to freedom, not
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+ Developers that use our General Public Licenses protect your rights
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+ A secondary benefit of defending all users' freedom is that
+improvements made in alternate versions of the program, if they
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+incorporate. Many developers of free software are heartened and
+encouraged by the resulting cooperation. However, in the case of
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+ The GNU Affero General Public License is designed specifically to
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+ Notwithstanding any other provision of this License, for material you
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+ All other non-permissive additional terms are considered "further
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+ Termination of your rights under this section does not terminate the
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+material under section 10.
+
+ 9. Acceptance Not Required for Having Copies.
+
+ You are not required to accept this License in order to receive or
+run a copy of the Program. Ancillary propagation of a covered work
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+to receive a copy likewise does not require acceptance. However,
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+ 10. Automatic Licensing of Downstream Recipients.
+
+ Each time you convey a covered work, the recipient automatically
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+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+ 11. Patents.
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+ A "contributor" is a copyright holder who authorizes use under this
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+ A contributor's "essential patent claims" are all patent claims
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+patent license under the contributor's essential patent claims, to
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+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
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+covered work in a country, or your recipient's use of the covered work
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+receiving the covered work authorizing them to use, propagate, modify
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+ A patent license is "discriminatory" if it does not include within
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+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+ Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+ 12. No Surrender of Others' Freedom.
+
+ If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot convey a
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+not convey it at all. For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+ 13. Remote Network Interaction; Use with the GNU General Public License.
+
+ Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
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+ Notwithstanding any other provision of this License, you have
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+but the work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+ 14. Revised Versions of this License.
+
+ The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time. Such new versions
+will be similar in spirit to the present version, but may differ in detail to
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+
+ Each version is given a distinguishing version number. If the
+Program specifies that a certain numbered version of the GNU Affero General
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+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation. If the Program does not specify a version number of the
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+
+ If the Program specifies that a proxy can decide which future
+versions of the GNU Affero General Public License can be used, that proxy's
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+to choose that version for the Program.
+
+ Later license versions may give you additional or different
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+
+ 15. Disclaimer of Warranty.
+
+ THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
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+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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+IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
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+ 16. Limitation of Liability.
+
+ IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+ 17. Interpretation of Sections 15 and 16.
+
+ If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Affero General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source. For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code. There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
diff --git a/Makefile.am b/Makefile.am
new file mode 100644
index 0000000..7b9ef95
--- /dev/null
+++ b/Makefile.am
@@ -0,0 +1,34 @@
+AUTOMAKE_OPTIONS = foreign dist-bzip2 1.6
+
+## FIXME: automake >= 1.13 or autoconf >= 2.70 provide better suited AC_CONFIG_MACRO_DIRS for configure.ac
+## remove line below when OE toolchain is updated to version which include those
+ACLOCAL_AMFLAGS = -I m4
+AM_CPPFLAGS = \
+ $(all_includes) \
+ -I$(top_srcdir)/include \
+ $(NULL)
+
+SUBDIRS = \
+ doc \
+ include \
+ src \
+ tests \
+ contrib \
+ $(NULL)
+
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = \
+ libosmo-legacy-mgcp.pc \
+ libosmo-mgcp-client.pc \
+ libosmo-mgcp.pc \
+ $(NULL)
+
+BUILT_SOURCES = $(top_srcdir)/.version
+EXTRA_DIST = git-version-gen osmoappdesc.py .version
+
+@RELMAKE@
+
+$(top_srcdir)/.version:
+ echo $(VERSION) > $@-t && mv $@-t $@
+dist-hook:
+ echo $(VERSION) > $(distdir)/.tarball-version
diff --git a/README b/README
new file mode 100644
index 0000000..7f55fe6
--- /dev/null
+++ b/README
@@ -0,0 +1,28 @@
+About OsmoMGW
+=============
+
+OsmoMGW originated from the OpenBSC project, which started as a minimalistic
+all-in-one implementation of the GSM Network. In 2017, OpenBSC had reached
+maturity and diversity (including M3UA SIGTRAN and 3G support in the form of
+IuCS and IuPS interfaces) that naturally lead to a separation of the all-in-one
+approach to fully independent separate programs as in typical GSM networks.
+
+OsmoMGW was one of the parts split off from the old openbsc.git. It originated
+as a solution to merely navigate RTP streams through a NAT, but has since
+matured to a Media Gateway implementation that is capable of streaming RTP for
+2G (AoIP) and 3G (IuCS) GSM networks as well as (still not implemented at time
+of writing) transcoding between TRAU, various RTP payloads and IuUP.
+
+The OsmoMGW program exposes an MGCP interface towards clients like OsmoMSC and
+OsmoBSC, and receives and sends RTP streams as configured via MGCP.
+
+The libosmo-mgcp-client library exposes utilities used by e.g. OsmoMSC (found
+in osmo-msc.git) to instruct OsmoMGW via its MGCP service.
+
+The libosmo-mgcp library exposes MGCP server utilities used by e.g. OsmoBSC-NAT
+(found in osmo-bsc.git) to navigate RTP streams through a NAT.
+(At time of writing, this is still called libosmo-legacy-mgcp.)
+
+Find OsmoMGW issue tracker and wiki online at
+https://osmocom.org/projects/osmo-mgw
+https://osmocom.org/projects/osmo-mgw/wiki
diff --git a/README.vty-tests b/README.vty-tests
new file mode 100644
index 0000000..ba1b87c
--- /dev/null
+++ b/README.vty-tests
@@ -0,0 +1,11 @@
+To run the configuration parsing and output (VTY) test suite, first install
+
+ git://git.osmocom.org/python/osmo-python-tests
+
+and pass the following configure options here:
+
+ ./configure --enable-vty-tests --enable-external-tests
+
+The VTY tests are then included in the standard check target:
+
+ make check
diff --git a/TODO-RELEASE b/TODO-RELEASE
new file mode 100644
index 0000000..d198b97
--- /dev/null
+++ b/TODO-RELEASE
@@ -0,0 +1,26 @@
+# When cleaning up this file upon a release:
+#
+# - Note that the release version number is entirely unrelated to the API
+# versions. A release version 5.2.3 may happily have an API version of 42:7:5.
+#
+# - Bump API version in src/lib*/Makefile.am files according to chapter
+# "Library interface versions" of the libtool documentation.
+# https://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
+#
+# - Iff the 'current' API version has changed, rename debian/lib*.install
+#
+# API version bumping for the impatient:
+# LIBVERSION=c:r:a (current:revision_of_current:backwards_compat_age)
+# 5:2:4 means that
+# - this implements version 5 of the API;
+# - this is the 2nd (compatible) revision of API version 5;
+# - this is backwards compatible to all APIs since 4 versions ago,
+# i.e. callers that need API versions from 1 to 5 can use this.
+#
+# Bumping API versions recipe:
+# If the library source code has changed at all since the last update, r++;
+# If any interfaces have been added, removed, or changed since the last update, c++, r=0;
+# If any interfaces have been added since the last public release, a++;
+# If any interfaces have been removed or changed since the last public release, a=0.
+#
+#library what description / commit summary line
diff --git a/configure.ac b/configure.ac
new file mode 100644
index 0000000..dea41b1
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,142 @@
+dnl Process this file with autoconf to produce a configure script
+AC_INIT([osmo-mgw],
+ m4_esyscmd([./git-version-gen .tarball-version]),
+ [openbsc@lists.osmocom.org])
+
+dnl *This* is the root dir, even if an install-sh exists in ../ or ../../
+AC_CONFIG_AUX_DIR([.])
+
+AM_INIT_AUTOMAKE([dist-bzip2])
+AC_CONFIG_TESTDIR(tests)
+
+dnl kernel style compile messages
+m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
+
+dnl include release helper
+RELMAKE='-include osmo-release.mk'
+AC_SUBST([RELMAKE])
+
+dnl checks for programs
+AC_PROG_MAKE_SET
+AC_PROG_CC
+AC_PROG_INSTALL
+LT_INIT
+
+dnl check for pkg-config (explained in detail in libosmocore/configure.ac)
+AC_PATH_PROG(PKG_CONFIG_INSTALLED, pkg-config, no)
+if test "x$PKG_CONFIG_INSTALLED" = "xno"; then
+ AC_MSG_WARN([You need to install pkg-config])
+fi
+PKG_PROG_PKG_CONFIG([0.20])
+
+dnl check for AX_CHECK_COMPILE_FLAG
+m4_ifdef([AX_CHECK_COMPILE_FLAG], [], [
+ AC_MSG_ERROR([Please install autoconf-archive; re-run 'autoreconf -fi' for it to take effect.])
+ ])
+
+dnl checks for libraries
+AC_SEARCH_LIBS([dlopen], [dl dld], [LIBRARY_DL="$LIBS";LIBS=""])
+AC_SUBST(LIBRARY_DL)
+
+
+PKG_CHECK_MODULES(LIBOSMOCORE, libosmocore >= 0.10.0)
+PKG_CHECK_MODULES(LIBOSMOVTY, libosmovty >= 0.10.0)
+PKG_CHECK_MODULES(LIBOSMONETIF, libosmo-netif >= 0.1.0)
+
+# Enable/disable transcoding within osmo-bsc_mgcp?
+AC_ARG_ENABLE([mgcp-transcoding], [AS_HELP_STRING([--enable-mgcp-transcoding], [Build the MGCP gateway with internal transcoding enabled.])],
+ [osmo_ac_mgcp_transcoding="$enableval"],[osmo_ac_mgcp_transcoding="no"])
+AC_ARG_WITH([g729], [AS_HELP_STRING([--with-g729], [Enable G.729 encoding/decoding.])], [osmo_ac_with_g729="$withval"],[osmo_ac_with_g729="no"])
+
+if test "$osmo_ac_mgcp_transcoding" = "yes" ; then
+ AC_SEARCH_LIBS([gsm_create], [gsm], [LIBRARY_GSM="$LIBS";LIBS=""], [AC_MSG_ERROR([--enable-mgcp-transcoding: cannot find usable libgsm])])
+ AC_SUBST(LIBRARY_GSM)
+ if test "$osmo_ac_with_g729" = "yes" ; then
+ PKG_CHECK_MODULES(LIBBCG729, libbcg729 >= 0.1, [AC_DEFINE([HAVE_BCG729], [1], [Use bgc729 decoder/encoder])])
+ fi
+ AC_DEFINE(BUILD_MGCP_TRANSCODING, 1, [Define if we want to build the MGCP gateway with transcoding support])
+fi
+AM_CONDITIONAL(BUILD_MGCP_TRANSCODING, test "x$osmo_ac_mgcp_transcoding" = "xyes")
+AC_SUBST(osmo_ac_mgcp_transcoding)
+
+dnl Checks for typedefs, structures and compiler characteristics
+
+# The following test is taken from WebKit's webkit.m4
+saved_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -fvisibility=hidden "
+AC_MSG_CHECKING([if ${CC} supports -fvisibility=hidden])
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([char foo;])],
+ [ AC_MSG_RESULT([yes])
+ SYMBOL_VISIBILITY="-fvisibility=hidden"],
+ AC_MSG_RESULT([no]))
+CFLAGS="$saved_CFLAGS"
+AC_SUBST(SYMBOL_VISIBILITY)
+
+AX_CHECK_COMPILE_FLAG([-Werror=implicit], [CFLAGS="$CFLAGS -Werror=implicit"])
+AX_CHECK_COMPILE_FLAG([-Werror=maybe-uninitialized], [CFLAGS="$CFLAGS -Werror=maybe-uninitialized"])
+AX_CHECK_COMPILE_FLAG([-Werror=memset-transposed-args], [CFLAGS="$CFLAGS -Werror=memset-transposed-args"])
+AX_CHECK_COMPILE_FLAG([-Werror=null-dereference], [CFLAGS="$CFLAGS -Werror=null-dereference"])
+AX_CHECK_COMPILE_FLAG([-Werror=sizeof-array-argument], [CFLAGS="$CFLAGS -Werror=sizeof-array-argument"])
+AX_CHECK_COMPILE_FLAG([-Werror=sizeof-pointer-memaccess], [CFLAGS="$CFLAGS -Werror=sizeof-pointer-memaccess"])
+
+# Coverage build taken from WebKit's configure.in
+AC_MSG_CHECKING([whether to enable code coverage support])
+AC_ARG_ENABLE(coverage,
+ AC_HELP_STRING([--enable-coverage],
+ [enable code coverage support [default=no]]),
+ [],[enable_coverage="no"])
+AC_MSG_RESULT([$enable_coverage])
+if test "$enable_coverage" = "yes"; then
+ COVERAGE_CFLAGS="-ftest-coverage -fprofile-arcs"
+ COVERAGE_LDFLAGS="-ftest-coverage -fprofile-arcs"
+ AC_SUBST([COVERAGE_CFLAGS])
+ AC_SUBST([COVERAGE_LDFLAGS])
+fi
+
+AC_ARG_ENABLE([vty_tests],
+ AC_HELP_STRING([--enable-vty-tests],
+ [Include the VTY/CTRL tests in make check (deprecated)
+ [default=no]]),
+ [enable_ext_tests="$enableval"],[enable_ext_tests="no"])
+AC_ARG_ENABLE([external_tests],
+ AC_HELP_STRING([--enable-external-tests],
+ [Include the VTY/CTRL tests in make check [default=no]]),
+ [enable_ext_tests="$enableval"],[enable_ext_tests="no"])
+if test "x$enable_ext_tests" = "xyes" ; then
+ AM_PATH_PYTHON
+ AC_CHECK_PROG(OSMOTESTEXT_CHECK,osmotestvty.py,yes)
+ if test "x$OSMOTESTEXT_CHECK" != "xyes" ; then
+ AC_MSG_ERROR([Please install git://osmocom.org/python/osmo-python-tests to run the VTY/CTRL tests.])
+ fi
+fi
+AC_MSG_CHECKING([whether to enable VTY/CTRL tests])
+AC_MSG_RESULT([$enable_ext_tests])
+AM_CONDITIONAL(ENABLE_EXT_TESTS, test "x$enable_ext_tests" = "xyes")
+
+dnl Generate the output
+AM_CONFIG_HEADER(bscconfig.h)
+
+AC_OUTPUT(
+ libosmo-legacy-mgcp.pc
+ libosmo-mgcp-client.pc
+ libosmo-mgcp.pc
+ include/Makefile
+ include/osmocom/Makefile
+ include/osmocom/legacy_mgcp/Makefile
+ include/osmocom/mgcp_client/Makefile
+ include/osmocom/mgcp/Makefile
+ src/Makefile
+ src/libosmo-legacy-mgcp/Makefile
+ src/libosmo-mgcp-client/Makefile
+ src/libosmo-mgcp/Makefile
+ src/osmo-bsc_mgcp/Makefile
+ src/osmo-mgw/Makefile
+ tests/Makefile
+ tests/atlocal
+ tests/legacy_mgcp/Makefile
+ tests/mgcp_client/Makefile
+ tests/mgcp/Makefile
+ doc/Makefile
+ doc/examples/Makefile
+ contrib/Makefile
+ Makefile)
diff --git a/contrib/Makefile.am b/contrib/Makefile.am
new file mode 100644
index 0000000..db6d0f5
--- /dev/null
+++ b/contrib/Makefile.am
@@ -0,0 +1 @@
+EXTRA_DIST = ipa.py
diff --git a/contrib/ipa.py b/contrib/ipa.py
new file mode 100755
index 0000000..71cbf45
--- /dev/null
+++ b/contrib/ipa.py
@@ -0,0 +1,278 @@
+#!/usr/bin/python3
+# -*- mode: python-mode; py-indent-tabs-mode: nil -*-
+"""
+/*
+ * Copyright (C) 2016 sysmocom s.f.m.c. GmbH
+ *
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+"""
+
+import struct, random, sys
+
+class IPA(object):
+ """
+ Stateless IPA protocol multiplexer: add/remove/parse (extended) header
+ """
+ version = "0.0.5"
+ TCP_PORT_OML = 3002
+ TCP_PORT_RSL = 3003
+ # OpenBSC extensions: OSMO, MGCP_OLD
+ PROTO = dict(RSL=0x00, CCM=0xFE, SCCP=0xFD, OML=0xFF, OSMO=0xEE, MGCP_OLD=0xFC)
+ # ...OML Router Control, GSUP GPRS extension, Osmocom Authn Protocol
+ EXT = dict(CTRL=0, MGCP=1, LAC=2, SMSC=3, ORC=4, GSUP=5, OAP=6)
+ # OpenBSC extension: SCCP_OLD
+ MSGT = dict(PING=0x00, PONG=0x01, ID_GET=0x04, ID_RESP=0x05, ID_ACK=0x06, SCCP_OLD=0xFF)
+ _IDTAG = dict(SERNR=0, UNITNAME=1, LOCATION=2, TYPE=3, EQUIPVERS=4, SWVERSION=5, IPADDR=6, MACADDR=7, UNIT=8)
+ CTRL_GET = 'GET'
+ CTRL_SET = 'SET'
+ CTRL_REP = 'REPLY'
+ CTRL_ERR = 'ERR'
+ CTRL_TRAP = 'TRAP'
+
+ def _l(self, d, p):
+ """
+ Reverse dictionary lookup: return key for a given value
+ """
+ if p is None:
+ return 'UNKNOWN'
+ return list(d.keys())[list(d.values()).index(p)]
+
+ def _tag(self, t, v):
+ """
+ Create TAG as TLV data
+ """
+ return struct.pack(">HB", len(v) + 1, t) + v
+
+ def proto(self, p):
+ """
+ Lookup protocol name
+ """
+ return self._l(self.PROTO, p)
+
+ def ext(self, p):
+ """
+ Lookup protocol extension name
+ """
+ return self._l(self.EXT, p)
+
+ def msgt(self, p):
+ """
+ Lookup message type name
+ """
+ return self._l(self.MSGT, p)
+
+ def idtag(self, p):
+ """
+ Lookup ID tag name
+ """
+ return self._l(self._IDTAG, p)
+
+ def ext_name(self, proto, exten):
+ """
+ Return proper extension byte name depending on the protocol used
+ """
+ if self.PROTO['CCM'] == proto:
+ return self.msgt(exten)
+ if self.PROTO['OSMO'] == proto:
+ return self.ext(exten)
+ return None
+
+ def add_header(self, data, proto, ext=None):
+ """
+ Add IPA header (with extension if necessary), data must be represented as bytes
+ """
+ if ext is None:
+ return struct.pack(">HB", len(data) + 1, proto) + data
+ return struct.pack(">HBB", len(data) + 1, proto, ext) + data
+
+ def del_header(self, data):
+ """
+ Strip IPA protocol header correctly removing extension if present
+ Returns data length, IPA protocol, extension (or None if not defined for a give protocol) and the data without header
+ """
+ if not len(data):
+ return None, None, None, None
+ (dlen, proto) = struct.unpack('>HB', data[:3])
+ if self.PROTO['OSMO'] == proto or self.PROTO['CCM'] == proto: # there's extension which we have to unpack
+ return struct.unpack('>HBB', data[:4]) + (data[4:], ) # length, protocol, extension, data
+ return dlen, proto, None, data[3:] # length, protocol, _, data
+
+ def split_combined(self, data):
+ """
+ Split the data which contains multiple concatenated IPA messages into tuple (first, rest) where rest contains remaining messages, first is the single IPA message
+ """
+ (length, _, _, _) = self.del_header(data)
+ return data[:(length + 3)], data[(length + 3):]
+
+ def tag_serial(self, data):
+ """
+ Make TAG for serial number
+ """
+ return self._tag(self._IDTAG['SERNR'], data)
+
+ def tag_name(self, data):
+ """
+ Make TAG for unit name
+ """
+ return self._tag(self._IDTAG['UNITNAME'], data)
+
+ def tag_loc(self, data):
+ """
+ Make TAG for location
+ """
+ return self._tag(self._IDTAG['LOCATION'], data)
+
+ def tag_type(self, data):
+ """
+ Make TAG for unit type
+ """
+ return self._tag(self._IDTAG['TYPE'], data)
+
+ def tag_equip(self, data):
+ """
+ Make TAG for equipment version
+ """
+ return self._tag(self._IDTAG['EQUIPVERS'], data)
+
+ def tag_sw(self, data):
+ """
+ Make TAG for software version
+ """
+ return self._tag(self._IDTAG['SWVERSION'], data)
+
+ def tag_ip(self, data):
+ """
+ Make TAG for IP address
+ """
+ return self._tag(self._IDTAG['IPADDR'], data)
+
+ def tag_mac(self, data):
+ """
+ Make TAG for MAC address
+ """
+ return self._tag(self._IDTAG['MACADDR'], data)
+
+ def tag_unit(self, data):
+ """
+ Make TAG for unit ID
+ """
+ return self._tag(self._IDTAG['UNIT'], data)
+
+ def identity(self, unit=b'', mac=b'', location=b'', utype=b'', equip=b'', sw=b'', name=b'', serial=b''):
+ """
+ Make IPA IDENTITY tag list, by default returns empty concatenated bytes of tag list
+ """
+ return self.tag_unit(unit) + self.tag_mac(mac) + self.tag_loc(location) + self.tag_type(utype) + self.tag_equip(equip) + self.tag_sw(sw) + self.tag_name(name) + self.tag_serial(serial)
+
+ def ping(self):
+ """
+ Make PING message
+ """
+ return self.add_header(b'', self.PROTO['CCM'], self.MSGT['PING'])
+
+ def pong(self):
+ """
+ Make PONG message
+ """
+ return self.add_header(b'', self.PROTO['CCM'], self.MSGT['PONG'])
+
+ def id_ack(self):
+ """
+ Make ID_ACK CCM message
+ """
+ return self.add_header(b'', self.PROTO['CCM'], self.MSGT['ID_ACK'])
+
+ def id_get(self):
+ """
+ Make ID_GET CCM message
+ """
+ return self.add_header(self.identity(), self.PROTO['CCM'], self.MSGT['ID_GET'])
+
+ def id_resp(self, data):
+ """
+ Make ID_RESP CCM message
+ """
+ return self.add_header(data, self.PROTO['CCM'], self.MSGT['ID_RESP'])
+
+class Ctrl(IPA):
+ """
+ Osmocom CTRL protocol implemented on top of IPA multiplexer
+ """
+ def __init__(self):
+ random.seed()
+
+ def add_header(self, data):
+ """
+ Add CTRL header
+ """
+ return super(Ctrl, self).add_header(data.encode('utf-8'), IPA.PROTO['OSMO'], IPA.EXT['CTRL'])
+
+ def rem_header(self, data):
+ """
+ Remove CTRL header, check for appropriate protocol and extension
+ """
+ (_, proto, ext, d) = super(Ctrl, self).del_header(data)
+ if self.PROTO['OSMO'] != proto or self.EXT['CTRL'] != ext:
+ return None
+ return d
+
+ def parse(self, data, op=None):
+ """
+ Parse Ctrl string returning (var, value) pair
+ var could be None in case of ERROR message
+ value could be None in case of GET message
+ """
+ (s, i, v) = data.split(' ', 2)
+ if s == self.CTRL_ERR:
+ return None, v
+ if s == self.CTRL_GET:
+ return v, None
+ (s, i, var, val) = data.split(' ', 3)
+ if s == self.CTRL_TRAP and i != '0':
+ return None, '%s with non-zero id %s' % (s, i)
+ if op is not None and i != op:
+ if s == self.CTRL_GET + '_' + self.CTRL_REP or s == self.CTRL_SET + '_' + self.CTRL_REP:
+ return None, '%s with unexpected id %s' % (s, i)
+ return var, val
+
+ def trap(self, var, val):
+ """
+ Make TRAP message with given (vak, val) pair
+ """
+ return self.add_header("%s 0 %s %s" % (self.CTRL_TRAP, var, val))
+
+ def cmd(self, var, val=None):
+ """
+ Make SET/GET command message: returns (r, m) tuple where r is random operation id and m is assembled message
+ """
+ r = random.randint(1, sys.maxsize)
+ if val is not None:
+ return r, self.add_header("%s %s %s %s" % (self.CTRL_SET, r, var, val))
+ return r, self.add_header("%s %s %s" % (self.CTRL_GET, r, var))
+
+ def verify(self, reply, r, var, val=None):
+ """
+ Verify reply to SET/GET command: returns (b, v) tuple where v is True/False verification result and v is the variable value
+ """
+ (k, v) = self.parse(reply)
+ if k != var or (val is not None and v != val):
+ return False, v
+ return True, v
+
+if __name__ == '__main__':
+ print("IPA multiplexer v%s loaded." % IPA.version)
diff --git a/contrib/jenkins.sh b/contrib/jenkins.sh
new file mode 100755
index 0000000..44152dc
--- /dev/null
+++ b/contrib/jenkins.sh
@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+# jenkins build helper script for openbsc. This is how we build on jenkins.osmocom.org
+
+if ! [ -x "$(command -v osmo-build-dep.sh)" ]; then
+ echo "Error: We need to have scripts/osmo-deps.sh from http://git.osmocom.org/osmo-ci/ in PATH !"
+ exit 2
+fi
+
+
+set -ex
+
+base="$PWD"
+deps="$base/deps"
+inst="$deps/install"
+export deps inst
+
+osmo-clean-workspace.sh
+
+mkdir "$deps" || true
+osmo-build-dep.sh libosmocore "" ac_cv_path_DOXYGEN=false
+
+verify_value_string_arrays_are_terminated.py $(find . -name "*.[hc]")
+
+export PKG_CONFIG_PATH="$inst/lib/pkgconfig:$PKG_CONFIG_PATH"
+export LD_LIBRARY_PATH="$inst/lib"
+
+osmo-build-dep.sh libosmo-abis
+osmo-build-dep.sh libosmo-netif
+
+set +x
+echo
+echo
+echo
+echo " =============================== osmo-mgw ==============================="
+echo
+set -x
+
+cd "$base"
+autoreconf --install --force
+./configure $MGCP --enable-vty-tests --enable-external-tests
+$MAKE $PARALLEL_MAKE
+LD_LIBRARY_PATH="$inst/lib" $MAKE check \
+ || cat-testlogs.sh
+LD_LIBRARY_PATH="$inst/lib" \
+ DISTCHECK_CONFIGURE_FLAGS="$MGCP --enable-vty-tests --enable-external-tests" \
+ $MAKE distcheck \
+ || cat-testlogs.sh
+
+osmo-clean-workspace.sh
diff --git a/contrib/mgcp_server.py b/contrib/mgcp_server.py
new file mode 100755
index 0000000..05c489d
--- /dev/null
+++ b/contrib/mgcp_server.py
@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+# Simple server for mgcp... send audit, receive response..
+
+import socket, time
+
+MGCP_GATEWAY_PORT = 2427
+MGCP_CALLAGENT_PORT = 2727
+
+rsip_resp = """200 321321332\r\n"""
+audit_packet = """AUEP %d 13@mgw MGCP 1.0\r\n"""
+crcx_packet = """CRCX %d 14@mgw MGCP 1.0\r\nC: 4a84ad5d25f\r\nL: p:20, a:GSM-EFR, nt:IN\r\nM: recvonly\r\n"""
+dlcx_packet = """DLCX %d 14@mgw MGCP 1.0\r\nC: 4a84ad5d25f\r\nI: %d\r\n"""
+mdcx_packet = """MDCX %d 14@mgw MGCP 1.0\r\nC: 4a84ad5d25f\r\nI: %d\r\nL: p:20, a:GSM-EFR, nt:IN\r\nM: recvonly\r\n\r\nv=0\r\no=- 258696477 0 IN IP4 172.16.1.107\r\ns=-\r\nc=IN IP4 172.16.1.107\r\nt=0 0\r\nm=audio 6666 RTP/AVP 127\r\na=rtpmap:127 GSM-EFR/8000/1\r\na=ptime:20\r\na=recvonly\r\nm=image 4402 udptl t38\r\na=T38FaxVersion:0\r\na=T38MaxBitRate:14400\r\n"""
+
+def hexdump(src, length=8):
+ """Recipe is from http://code.activestate.com/recipes/142812/"""
+ result = []
+ digits = 4 if isinstance(src, unicode) else 2
+ for i in xrange(0, len(src), length):
+ s = src[i:i+length]
+ hexa = b' '.join(["%0*X" % (digits, ord(x)) for x in s])
+ text = b''.join([x if 0x20 <= ord(x) < 0x7F else b'.' for x in s])
+ result.append( b"%04X %-*s %s" % (i, length*(digits + 1), hexa, text) )
+ return b'\n'.join(result)
+
+server_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+server_socket.bind(("127.0.0.1", MGCP_CALLAGENT_PORT))
+server_socket.setblocking(1)
+
+last_ci = 1
+def send_and_receive(packet):
+ global last_ci
+ server_socket.sendto(packet, ("127.0.0.1", MGCP_GATEWAY_PORT))
+ try:
+ data, addr = server_socket.recvfrom(4096)
+
+ # attempt to store the CI of the response
+ list = data.split("\n")
+ for item in list:
+ if item.startswith("I: "):
+ last_ci = int(item[3:])
+
+ print hexdump(data), addr
+ except socket.error, e:
+ print e
+ pass
+
+def generate_tid():
+ import random
+ return random.randint(0, 65123)
+
+
+
+while True:
+ send_and_receive(audit_packet % generate_tid())
+ send_and_receive(crcx_packet % generate_tid() )
+ send_and_receive(mdcx_packet % (generate_tid(), last_ci))
+ send_and_receive(dlcx_packet % (generate_tid(), last_ci))
+
+ time.sleep(3)
diff --git a/contrib/systemd/osmo-bsc-mgcp.service b/contrib/systemd/osmo-bsc-mgcp.service
new file mode 100644
index 0000000..c040e60
--- /dev/null
+++ b/contrib/systemd/osmo-bsc-mgcp.service
@@ -0,0 +1,11 @@
+[Unit]
+Description=OpenBSC MGCP
+
+[Service]
+Type=simple
+Restart=always
+ExecStart=/usr/bin/osmo-bsc_mgcp -s -c /etc/osmocom/osmo-bsc-mgcp.cfg
+RestartSec=2
+
+[Install]
+WantedBy=multi-user.target
diff --git a/doc/Makefile.am b/doc/Makefile.am
new file mode 100644
index 0000000..5a23107
--- /dev/null
+++ b/doc/Makefile.am
@@ -0,0 +1,3 @@
+SUBDIRS = \
+ examples \
+ $(NULL)
diff --git a/doc/examples/Makefile.am b/doc/examples/Makefile.am
new file mode 100644
index 0000000..530c3fa
--- /dev/null
+++ b/doc/examples/Makefile.am
@@ -0,0 +1,22 @@
+CFG_FILES = find $(srcdir) -name '*.cfg*' | sed -e 's,^$(srcdir),,'
+
+dist-hook:
+ for f in $$($(CFG_FILES)); do \
+ j="$(distdir)/$$f" && \
+ mkdir -p "$$(dirname $$j)" && \
+ $(INSTALL_DATA) $(srcdir)/$$f $$j; \
+ done
+
+install-data-hook:
+ for f in $$($(CFG_FILES)); do \
+ j="$(DESTDIR)$(docdir)/examples/$$f" && \
+ mkdir -p "$$(dirname $$j)" && \
+ $(INSTALL_DATA) $(srcdir)/$$f $$j; \
+ done
+
+uninstall-hook:
+ @$(PRE_UNINSTALL)
+ for f in $$($(CFG_FILES)); do \
+ j="$(DESTDIR)$(docdir)/examples/$$f" && \
+ $(RM) $$j; \
+ done
diff --git a/doc/examples/osmo-bsc_mgcp/mgcp.cfg b/doc/examples/osmo-bsc_mgcp/mgcp.cfg
new file mode 100644
index 0000000..442162f
--- /dev/null
+++ b/doc/examples/osmo-bsc_mgcp/mgcp.cfg
@@ -0,0 +1,14 @@
+!
+! MGCP configuration example
+!
+mgcp
+ !local ip 10.23.24.2
+ !bts ip 10.24.24.1
+ !bind ip 10.23.24.1
+ bind port 2427
+ rtp base 4000
+ rtp force-ptime 20
+ sdp audio payload number 98
+ sdp audio payload name AMR/8000
+ number endpoints 31
+ no rtcp-omit
diff --git a/doc/examples/osmo-mgw/osmo-mgw.cfg b/doc/examples/osmo-mgw/osmo-mgw.cfg
new file mode 100644
index 0000000..d8ea3a5
--- /dev/null
+++ b/doc/examples/osmo-mgw/osmo-mgw.cfg
@@ -0,0 +1,13 @@
+!
+! MGCP configuration example
+!
+mgcp
+ !local ip 10.23.24.2
+ !bts ip 10.24.24.1
+ !bind ip 10.23.24.1
+ bind port 2427
+ rtp force-ptime 20
+ sdp audio payload number 98
+ sdp audio payload name AMR/8000
+ number endpoints 31
+ no rtcp-omit
diff --git a/git-version-gen b/git-version-gen
new file mode 100755
index 0000000..8e59c5a
--- /dev/null
+++ b/git-version-gen
@@ -0,0 +1,151 @@
+#!/bin/sh
+# Print a version string.
+scriptversion=2010-01-28.01
+
+# Copyright (C) 2007-2010 Free Software Foundation, Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+# This script is derived from GIT-VERSION-GEN from GIT: http://git.or.cz/.
+# It may be run two ways:
+# - from a git repository in which the "git describe" command below
+# produces useful output (thus requiring at least one signed tag)
+# - from a non-git-repo directory containing a .tarball-version file, which
+# presumes this script is invoked like "./git-version-gen .tarball-version".
+
+# In order to use intra-version strings in your project, you will need two
+# separate generated version string files:
+#
+# .tarball-version - present only in a distribution tarball, and not in
+# a checked-out repository. Created with contents that were learned at
+# the last time autoconf was run, and used by git-version-gen. Must not
+# be present in either $(srcdir) or $(builddir) for git-version-gen to
+# give accurate answers during normal development with a checked out tree,
+# but must be present in a tarball when there is no version control system.
+# Therefore, it cannot be used in any dependencies. GNUmakefile has
+# hooks to force a reconfigure at distribution time to get the value
+# correct, without penalizing normal development with extra reconfigures.
+#
+# .version - present in a checked-out repository and in a distribution
+# tarball. Usable in dependencies, particularly for files that don't
+# want to depend on config.h but do want to track version changes.
+# Delete this file prior to any autoconf run where you want to rebuild
+# files to pick up a version string change; and leave it stale to
+# minimize rebuild time after unrelated changes to configure sources.
+#
+# It is probably wise to add these two files to .gitignore, so that you
+# don't accidentally commit either generated file.
+#
+# Use the following line in your configure.ac, so that $(VERSION) will
+# automatically be up-to-date each time configure is run (and note that
+# since configure.ac no longer includes a version string, Makefile rules
+# should not depend on configure.ac for version updates).
+#
+# AC_INIT([GNU project],
+# m4_esyscmd([build-aux/git-version-gen .tarball-version]),
+# [bug-project@example])
+#
+# Then use the following lines in your Makefile.am, so that .version
+# will be present for dependencies, and so that .tarball-version will
+# exist in distribution tarballs.
+#
+# BUILT_SOURCES = $(top_srcdir)/.version
+# $(top_srcdir)/.version:
+# echo $(VERSION) > $@-t && mv $@-t $@
+# dist-hook:
+# echo $(VERSION) > $(distdir)/.tarball-version
+
+case $# in
+ 1) ;;
+ *) echo 1>&2 "Usage: $0 \$srcdir/.tarball-version"; exit 1;;
+esac
+
+tarball_version_file=$1
+nl='
+'
+
+# First see if there is a tarball-only version file.
+# then try "git describe", then default.
+if test -f $tarball_version_file
+then
+ v=`cat $tarball_version_file` || exit 1
+ case $v in
+ *$nl*) v= ;; # reject multi-line output
+ [0-9]*) ;;
+ *) v= ;;
+ esac
+ test -z "$v" \
+ && echo "$0: WARNING: $tarball_version_file seems to be damaged" 1>&2
+fi
+
+if test -n "$v"
+then
+ : # use $v
+elif test -d ./.git \
+ && v=`git describe --abbrev=4 --match='v*' HEAD 2>/dev/null \
+ || git describe --abbrev=4 HEAD 2>/dev/null` \
+ && case $v in
+ [0-9]*) ;;
+ v[0-9]*) ;;
+ *) (exit 1) ;;
+ esac
+then
+ # Is this a new git that lists number of commits since the last
+ # tag or the previous older version that did not?
+ # Newer: v6.10-77-g0f8faeb
+ # Older: v6.10-g0f8faeb
+ case $v in
+ *-*-*) : git describe is okay three part flavor ;;
+ *-*)
+ : git describe is older two part flavor
+ # Recreate the number of commits and rewrite such that the
+ # result is the same as if we were using the newer version
+ # of git describe.
+ vtag=`echo "$v" | sed 's/-.*//'`
+ numcommits=`git rev-list "$vtag"..HEAD | wc -l`
+ v=`echo "$v" | sed "s/\(.*\)-\(.*\)/\1-$numcommits-\2/"`;
+ ;;
+ esac
+
+ # Change the first '-' to a '.', so version-comparing tools work properly.
+ # Remove the "g" in git describe's output string, to save a byte.
+ v=`echo "$v" | sed 's/-/./;s/\(.*\)-g/\1-/'`;
+else
+ v=UNKNOWN
+fi
+
+v=`echo "$v" |sed 's/^v//'`
+
+# Don't declare a version "dirty" merely because a time stamp has changed.
+git status > /dev/null 2>&1
+
+dirty=`sh -c 'git diff-index --name-only HEAD' 2>/dev/null` || dirty=
+case "$dirty" in
+ '') ;;
+ *) # Append the suffix only if there isn't one already.
+ case $v in
+ *-dirty) ;;
+ *) v="$v-dirty" ;;
+ esac ;;
+esac
+
+# Omit the trailing newline, so that m4_esyscmd can use the result directly.
+echo "$v" | tr -d '\012'
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-end: "$"
+# End:
diff --git a/include/Makefile.am b/include/Makefile.am
new file mode 100644
index 0000000..b52e5ea
--- /dev/null
+++ b/include/Makefile.am
@@ -0,0 +1,15 @@
+SUBDIRS = \
+ osmocom \
+ $(NULL)
+
+nobase_include_HEADERS = \
+ osmocom/legacy_mgcp/mgcp.h \
+ osmocom/legacy_mgcp/mgcp_internal.h \
+ osmocom/legacy_mgcp/osmux.h \
+ osmocom/mgcp_client/mgcp_client.h \
+ osmocom/mgcp_client/mgcp_common.h \
+ osmocom/mgcp/mgcp.h \
+ osmocom/mgcp/mgcp_common.h \
+ osmocom/mgcp/mgcp_internal.h \
+ osmocom/mgcp/osmux.h \
+ $(NULL)
diff --git a/include/osmocom/Makefile.am b/include/osmocom/Makefile.am
new file mode 100644
index 0000000..c752c40
--- /dev/null
+++ b/include/osmocom/Makefile.am
@@ -0,0 +1,5 @@
+SUBDIRS = \
+ legacy_mgcp \
+ mgcp_client \
+ mgcp \
+ $(NULL)
diff --git a/include/osmocom/legacy_mgcp/Makefile.am b/include/osmocom/legacy_mgcp/Makefile.am
new file mode 100644
index 0000000..4a9550c
--- /dev/null
+++ b/include/osmocom/legacy_mgcp/Makefile.am
@@ -0,0 +1,4 @@
+noinst_HEADERS = \
+ mgcp_transcode.h \
+ vty.h \
+ $(NULL)
diff --git a/include/osmocom/legacy_mgcp/mgcp.h b/include/osmocom/legacy_mgcp/mgcp.h
new file mode 100644
index 0000000..147a0d5
--- /dev/null
+++ b/include/osmocom/legacy_mgcp/mgcp.h
@@ -0,0 +1,292 @@
+/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
+
+/*
+ * (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2012 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef OPENBSC_MGCP_H
+#define OPENBSC_MGCP_H
+
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/write_queue.h>
+#include <osmocom/core/timer.h>
+#include <osmocom/core/logging.h>
+
+#include <arpa/inet.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+#define RTP_PORT_DEFAULT 4000
+#define RTP_PORT_NET_DEFAULT 16000
+
+/**
+ * Calculate the RTP audio port for the given multiplex
+ * and the direction. This allows a semi static endpoint
+ * to port calculation removing the need for the BSC
+ * and the MediaGateway to communicate.
+ *
+ * Port usage explained:
+ * base + (multiplex * 2) + 0 == local port to wait for network packets
+ * base + (multiplex * 2) + 1 == local port for rtcp
+ *
+ * The above port will receive packets from the BTS that need
+ * to be patched and forwarded to the network.
+ * The above port will receive packets from the network that
+ * need to be patched and forwarded to the BTS.
+ *
+ * We assume to have a static BTS IP address so we can differentiate
+ * network and BTS.
+ *
+ */
+static inline int rtp_calculate_port(int multiplex, int base)
+{
+ return base + (multiplex * 2);
+}
+
+
+/*
+ * Handling of MGCP Endpoints and the MGCP Config
+ */
+struct mgcp_endpoint;
+struct mgcp_config;
+struct mgcp_trunk_config;
+struct mgcp_rtp_end;
+
+#define MGCP_ENDP_CRCX 1
+#define MGCP_ENDP_DLCX 2
+#define MGCP_ENDP_MDCX 3
+
+/*
+ * what to do with the msg?
+ * - continue as usual?
+ * - reject and send a failure code?
+ * - defer? do not send anything
+ */
+#define MGCP_POLICY_CONT 4
+#define MGCP_POLICY_REJECT 5
+#define MGCP_POLICY_DEFER 6
+
+typedef int (*mgcp_realloc)(struct mgcp_trunk_config *cfg, int endpoint);
+typedef int (*mgcp_change)(struct mgcp_trunk_config *cfg, int endpoint, int state);
+typedef int (*mgcp_policy)(struct mgcp_trunk_config *cfg, int endpoint, int state, const char *transactio_id);
+typedef int (*mgcp_reset)(struct mgcp_trunk_config *cfg);
+typedef int (*mgcp_rqnt)(struct mgcp_endpoint *endp, char tone);
+
+/**
+ * Return:
+ * < 0 in case no audio was processed
+ * >= 0 in case audio was processed. The remaining payload
+ * length will be returned.
+ */
+typedef int (*mgcp_processing)(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_end *dst_end,
+ char *data, int *len, int buf_size);
+typedef int (*mgcp_processing_setup)(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_end *dst_end,
+ struct mgcp_rtp_end *src_end);
+
+typedef void (*mgcp_get_format)(struct mgcp_endpoint *endp,
+ int *payload_type,
+ const char**subtype_name,
+ const char**fmtp_extra);
+
+#define PORT_ALLOC_STATIC 0
+#define PORT_ALLOC_DYNAMIC 1
+
+/**
+ * This holds information on how to allocate ports
+ */
+struct mgcp_port_range {
+ int mode;
+
+ /* addr or NULL to fall-back to default */
+ char *bind_addr;
+
+ /* pre-allocated from a base? */
+ int base_port;
+
+ /* dynamically allocated */
+ int range_start;
+ int range_end;
+ int last_port;
+};
+
+#define MGCP_KEEPALIVE_ONCE (-1)
+
+struct mgcp_trunk_config {
+ struct llist_head entry;
+
+ struct mgcp_config *cfg;
+
+ int trunk_nr;
+ int trunk_type;
+
+ char *audio_fmtp_extra;
+ char *audio_name;
+ int audio_payload;
+ int audio_send_ptime;
+ int audio_send_name;
+ int audio_loop;
+
+ int no_audio_transcoding;
+
+ int omit_rtcp;
+ int keepalive_interval;
+
+ /* RTP patching */
+ int force_constant_ssrc; /* 0: don't, 1: once */
+ int force_aligned_timing;
+
+ /* spec handling */
+ int force_realloc;
+
+ /* timer */
+ struct osmo_timer_list keepalive_timer;
+
+ unsigned int number_endpoints;
+ struct mgcp_endpoint *endpoints;
+};
+
+enum mgcp_role {
+ MGCP_BSC = 0,
+ MGCP_BSC_NAT,
+};
+
+enum mgcp_connection_mode {
+ MGCP_CONN_NONE = 0,
+ MGCP_CONN_RECV_ONLY = 1,
+ MGCP_CONN_SEND_ONLY = 2,
+ MGCP_CONN_RECV_SEND = MGCP_CONN_RECV_ONLY | MGCP_CONN_SEND_ONLY,
+ MGCP_CONN_LOOPBACK = 4 | MGCP_CONN_RECV_SEND,
+};
+
+struct mgcp_config {
+ int source_port;
+ char *local_ip;
+ char *source_addr;
+ char *bts_ip;
+ char *call_agent_addr;
+
+ struct in_addr bts_in;
+
+ /* transcoder handling */
+ char *transcoder_ip;
+ struct in_addr transcoder_in;
+ int transcoder_remote_base;
+
+ /* RTP processing */
+ mgcp_processing rtp_processing_cb;
+ mgcp_processing_setup setup_rtp_processing_cb;
+
+ mgcp_get_format get_net_downlink_format_cb;
+
+ struct osmo_wqueue gw_fd;
+
+ struct mgcp_port_range bts_ports;
+ struct mgcp_port_range net_ports;
+ struct mgcp_port_range transcoder_ports;
+ int endp_dscp;
+
+ int bts_force_ptime;
+
+ mgcp_change change_cb;
+ mgcp_policy policy_cb;
+ mgcp_reset reset_cb;
+ mgcp_realloc realloc_cb;
+ mgcp_rqnt rqnt_cb;
+ void *data;
+
+ uint32_t last_call_id;
+
+ /* trunk handling */
+ struct mgcp_trunk_config trunk;
+ struct llist_head trunks;
+
+ /* only used for start with a static configuration */
+ int last_net_port;
+ int last_bts_port;
+
+ enum mgcp_role role;
+
+ /* osmux translator: 0 means disabled, 1 means enabled */
+ int osmux;
+ /* addr to bind the server to */
+ char *osmux_addr;
+ /* The BSC-NAT may ask for enabling osmux on demand. This tells us if
+ * the osmux socket is already initialized.
+ */
+ int osmux_init;
+ /* osmux batch factor: from 1 to 4 maximum */
+ int osmux_batch;
+ /* osmux batch size (in bytes) */
+ int osmux_batch_size;
+ /* osmux port */
+ uint16_t osmux_port;
+ /* Pad circuit with dummy messages until we see the first voice
+ * message.
+ */
+ uint16_t osmux_dummy;
+};
+
+/* config management */
+struct mgcp_config *mgcp_config_alloc(void);
+int mgcp_parse_config(const char *config_file, struct mgcp_config *cfg,
+ enum mgcp_role role);
+int mgcp_vty_init(void);
+int mgcp_endpoints_allocate(struct mgcp_trunk_config *cfg);
+void mgcp_release_endp(struct mgcp_endpoint *endp);
+void mgcp_initialize_endp(struct mgcp_endpoint *endp);
+int mgcp_reset_transcoder(struct mgcp_config *cfg);
+void mgcp_format_stats(struct mgcp_endpoint *endp, char *stats, size_t size);
+int mgcp_parse_stats(struct msgb *msg, uint32_t *ps, uint32_t *os, uint32_t *pr, uint32_t *_or, int *loss, uint32_t *jitter);
+
+void mgcp_trunk_set_keepalive(struct mgcp_trunk_config *tcfg, int interval);
+
+/*
+ * format helper functions
+ */
+struct msgb *mgcp_handle_message(struct mgcp_config *cfg, struct msgb *msg);
+
+/* adc helper */
+static inline int mgcp_timeslot_to_endpoint(int multiplex, int timeslot)
+{
+ if (timeslot == 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "Timeslot should not be 0\n");
+ timeslot = 255;
+ }
+
+ return timeslot + (32 * multiplex);
+}
+
+static inline void mgcp_endpoint_to_timeslot(int endpoint, int *multiplex, int *timeslot)
+{
+ *multiplex = endpoint / 32;
+ *timeslot = endpoint % 32;
+}
+
+int mgcp_send_reset_ep(struct mgcp_endpoint *endp, int endpoint);
+int mgcp_send_reset_all(struct mgcp_config *cfg);
+
+
+int mgcp_create_bind(const char *source_addr, struct osmo_fd *fd, int port);
+int mgcp_send(struct mgcp_endpoint *endp, int dest, int is_rtp, struct sockaddr_in *addr, char *buf, int rc);
+int mgcp_udp_send(int fd, struct in_addr *addr, int port, char *buf, int len);
+
+#endif
diff --git a/include/osmocom/legacy_mgcp/mgcp_internal.h b/include/osmocom/legacy_mgcp/mgcp_internal.h
new file mode 100644
index 0000000..dcc75f1
--- /dev/null
+++ b/include/osmocom/legacy_mgcp/mgcp_internal.h
@@ -0,0 +1,337 @@
+/* MGCP Private Data */
+
+/*
+ * (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2012 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#pragma once
+
+#include <string.h>
+
+#include <osmocom/core/select.h>
+
+#define CI_UNUSED 0
+
+enum mgcp_trunk_type {
+ MGCP_TRUNK_VIRTUAL,
+ MGCP_TRUNK_E1,
+};
+
+struct mgcp_rtp_stream_state {
+ uint32_t ssrc;
+ uint16_t last_seq;
+ uint32_t last_timestamp;
+ uint32_t err_ts_counter;
+ int32_t last_tsdelta;
+ uint32_t last_arrival_time;
+};
+
+struct mgcp_rtp_state {
+ int initialized;
+ int patch_ssrc;
+
+ uint32_t orig_ssrc;
+
+ int seq_offset;
+
+ int32_t timestamp_offset;
+ uint32_t packet_duration;
+
+ struct mgcp_rtp_stream_state in_stream;
+ struct mgcp_rtp_stream_state out_stream;
+
+ /* jitter and packet loss calculation */
+ int stats_initialized;
+ uint16_t stats_base_seq;
+ uint16_t stats_max_seq;
+ uint32_t stats_ssrc;
+ uint32_t stats_jitter;
+ int32_t stats_transit;
+ int stats_cycles;
+ bool patched_first_rtp_payload; /* FIXME: drop this, see OS#2459 */
+};
+
+struct mgcp_rtp_codec {
+ uint32_t rate;
+ int channels;
+ uint32_t frame_duration_num;
+ uint32_t frame_duration_den;
+
+ int payload_type;
+ char *audio_name;
+ char *subtype_name;
+};
+
+struct mgcp_rtp_end {
+ /* statistics */
+ unsigned int packets;
+ unsigned int octets;
+ unsigned int dropped_packets;
+ struct in_addr addr;
+
+ /* in network byte order */
+ int rtp_port, rtcp_port;
+
+ /* audio codec information */
+ struct mgcp_rtp_codec codec;
+ struct mgcp_rtp_codec alt_codec; /* TODO/XXX: make it generic */
+
+ /* per endpoint data */
+ int frames_per_packet;
+ uint32_t packet_duration_ms;
+ char *fmtp_extra;
+ int output_enabled;
+ int force_output_ptime;
+
+ /* RTP patching */
+ int force_constant_ssrc; /* -1: always, 0: don't, 1: once */
+ int force_aligned_timing;
+ void *rtp_process_data;
+
+ /*
+ * Each end has a socket...
+ */
+ struct osmo_fd rtp;
+ struct osmo_fd rtcp;
+
+ int local_port;
+ int local_alloc;
+};
+
+enum {
+ MGCP_TAP_BTS_IN,
+ MGCP_TAP_BTS_OUT,
+ MGCP_TAP_NET_IN,
+ MGCP_TAP_NET_OUT,
+
+ /* last element */
+ MGCP_TAP_COUNT
+};
+
+struct mgcp_rtp_tap {
+ int enabled;
+ struct sockaddr_in forward;
+};
+
+struct mgcp_lco {
+ char *string;
+ char *codec;
+ int pkt_period_min; /* time in ms */
+ int pkt_period_max; /* time in ms */
+};
+
+enum mgcp_type {
+ MGCP_RTP_DEFAULT = 0,
+ MGCP_RTP_TRANSCODED,
+ MGCP_OSMUX_BSC,
+ MGCP_OSMUX_BSC_NAT,
+};
+
+#include <osmocom/legacy_mgcp/osmux.h>
+
+struct mgcp_endpoint {
+ int allocated;
+ uint32_t ci;
+ char *callid;
+ struct mgcp_lco local_options;
+ int conn_mode;
+ int orig_mode;
+
+ /* backpointer */
+ struct mgcp_config *cfg;
+ struct mgcp_trunk_config *tcfg;
+
+ /* port status for bts/net */
+ struct mgcp_rtp_end bts_end;
+ struct mgcp_rtp_end net_end;
+
+ /*
+ * For transcoding we will send from the local_port
+ * of trans_bts and it will arrive at trans_net from
+ * where we will forward it to the network.
+ */
+ struct mgcp_rtp_end trans_bts;
+ struct mgcp_rtp_end trans_net;
+ enum mgcp_type type;
+
+ /* sequence bits */
+ struct mgcp_rtp_state net_state;
+ struct mgcp_rtp_state bts_state;
+
+ /* fields for re-transmission */
+ char *last_trans;
+ char *last_response;
+
+ /* tap for the endpoint */
+ struct mgcp_rtp_tap taps[MGCP_TAP_COUNT];
+
+ struct {
+ /* Osmux state: disabled, activating, active */
+ enum osmux_state state;
+ /* Allocated Osmux circuit ID for this endpoint */
+ int allocated_cid;
+ /* Used Osmux circuit ID for this endpoint */
+ uint8_t cid;
+ /* handle to batch messages */
+ struct osmux_in_handle *in;
+ /* handle to unbatch messages */
+ struct osmux_out_handle out;
+ /* statistics */
+ struct {
+ uint32_t chunks;
+ uint32_t octets;
+ } stats;
+ } osmux;
+};
+
+#define for_each_line(line, save) \
+ for (line = strline_r(NULL, &save); line;\
+ line = strline_r(NULL, &save))
+
+static inline char *strline_r(char *str, char **saveptr)
+{
+ char *result;
+
+ if (str)
+ *saveptr = str;
+
+ result = *saveptr;
+
+ if (*saveptr != NULL) {
+ *saveptr = strpbrk(*saveptr, "\r\n");
+
+ if (*saveptr != NULL) {
+ char *eos = *saveptr;
+
+ if ((*saveptr)[0] == '\r' && (*saveptr)[1] == '\n')
+ (*saveptr)++;
+ (*saveptr)++;
+ if ((*saveptr)[0] == '\0')
+ *saveptr = NULL;
+
+ *eos = '\0';
+ }
+ }
+
+ return result;
+}
+
+
+
+#define ENDPOINT_NUMBER(endp) abs((int)(endp - endp->tcfg->endpoints))
+
+/**
+ * Internal structure while parsing a request
+ */
+struct mgcp_parse_data {
+ struct mgcp_config *cfg;
+ struct mgcp_endpoint *endp;
+ char *trans;
+ char *save;
+ int found;
+};
+
+int mgcp_send_dummy(struct mgcp_endpoint *endp);
+int mgcp_bind_bts_rtp_port(struct mgcp_endpoint *endp, int rtp_port);
+int mgcp_bind_net_rtp_port(struct mgcp_endpoint *endp, int rtp_port);
+int mgcp_bind_trans_bts_rtp_port(struct mgcp_endpoint *enp, int rtp_port);
+int mgcp_bind_trans_net_rtp_port(struct mgcp_endpoint *enp, int rtp_port);
+int mgcp_free_rtp_port(struct mgcp_rtp_end *end);
+
+/* For transcoding we need to manage an in and an output that are connected */
+static inline int endp_back_channel(int endpoint)
+{
+ return endpoint + 60;
+}
+
+struct mgcp_trunk_config *mgcp_trunk_alloc(struct mgcp_config *cfg, int index);
+struct mgcp_trunk_config *mgcp_trunk_num(struct mgcp_config *cfg, int index);
+
+void mgcp_rtp_end_config(struct mgcp_endpoint *endp, int expect_ssrc_change,
+ struct mgcp_rtp_end *rtp);
+uint32_t mgcp_rtp_packet_duration(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_end *rtp);
+
+void mgcp_state_calc_loss(struct mgcp_rtp_state *s, struct mgcp_rtp_end *,
+ uint32_t *expected, int *loss);
+uint32_t mgcp_state_calc_jitter(struct mgcp_rtp_state *);
+
+/* payload processing default functions */
+int mgcp_rtp_processing_default(struct mgcp_endpoint *endp, struct mgcp_rtp_end *dst_end,
+ char *data, int *len, int buf_size);
+
+int mgcp_setup_rtp_processing_default(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_end *dst_end,
+ struct mgcp_rtp_end *src_end);
+
+void mgcp_get_net_downlink_format_default(struct mgcp_endpoint *endp,
+ int *payload_type,
+ const char**subtype_name,
+ const char**fmtp_extra);
+
+/* internal RTP Annex A counting */
+void mgcp_rtp_annex_count(struct mgcp_endpoint *endp, struct mgcp_rtp_state *state,
+ const uint16_t seq, const int32_t transit,
+ const uint32_t ssrc);
+
+int mgcp_set_ip_tos(int fd, int tos);
+
+enum {
+ MGCP_DEST_NET = 0,
+ MGCP_DEST_BTS,
+};
+
+
+#define MGCP_DUMMY_LOAD 0x23
+
+
+/**
+ * SDP related information
+ */
+/* Assume audio frame length of 20ms */
+#define DEFAULT_RTP_AUDIO_FRAME_DUR_NUM 20
+#define DEFAULT_RTP_AUDIO_FRAME_DUR_DEN 1000
+#define DEFAULT_RTP_AUDIO_PACKET_DURATION_MS 20
+#define DEFAULT_RTP_AUDIO_DEFAULT_RATE 8000
+#define DEFAULT_RTP_AUDIO_DEFAULT_CHANNELS 1
+
+#define PTYPE_UNDEFINED (-1)
+int mgcp_parse_sdp_data(struct mgcp_endpoint *endp, struct mgcp_rtp_end *rtp, struct mgcp_parse_data *p);
+int mgcp_set_audio_info(void *ctx, struct mgcp_rtp_codec *codec,
+ int payload_type, const char *audio_name);
+
+
+/**
+ * Internal network related
+ */
+static inline const char *mgcp_net_src_addr(struct mgcp_endpoint *endp)
+{
+ if (endp->cfg->net_ports.bind_addr)
+ return endp->cfg->net_ports.bind_addr;
+ return endp->cfg->source_addr;
+}
+
+static inline const char *mgcp_bts_src_addr(struct mgcp_endpoint *endp)
+{
+ if (endp->cfg->bts_ports.bind_addr)
+ return endp->cfg->bts_ports.bind_addr;
+ return endp->cfg->source_addr;
+}
+
+int mgcp_msg_terminate_nul(struct msgb *msg);
diff --git a/include/osmocom/legacy_mgcp/mgcp_transcode.h b/include/osmocom/legacy_mgcp/mgcp_transcode.h
new file mode 100644
index 0000000..147e48b
--- /dev/null
+++ b/include/osmocom/legacy_mgcp/mgcp_transcode.h
@@ -0,0 +1,90 @@
+/*
+ * (C) 2014 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#ifndef OPENBSC_MGCP_TRANSCODE_H
+#define OPENBSC_MGCP_TRANSCODE_H
+
+#include "bscconfig.h"
+
+#include <gsm.h>
+#ifdef HAVE_BCG729
+#include <bcg729/decoder.h>
+#include <bcg729/encoder.h>
+#endif
+
+enum audio_format {
+ AF_INVALID,
+ AF_S16,
+ AF_L16,
+ AF_GSM,
+ AF_G729,
+ AF_PCMA,
+ AF_PCMU
+};
+
+
+struct mgcp_process_rtp_state {
+ /* decoding */
+ enum audio_format src_fmt;
+ union {
+ gsm gsm_handle;
+#ifdef HAVE_BCG729
+ bcg729DecoderChannelContextStruct *g729_dec;
+#endif
+ } src;
+ size_t src_frame_size;
+ size_t src_samples_per_frame;
+
+ /* processing */
+
+ /* encoding */
+ enum audio_format dst_fmt;
+ union {
+ gsm gsm_handle;
+#ifdef HAVE_BCG729
+ bcg729EncoderChannelContextStruct *g729_enc;
+#endif
+ } dst;
+ size_t dst_frame_size;
+ size_t dst_samples_per_frame;
+ int dst_packet_duration;
+
+ int is_running;
+ uint16_t next_seq;
+ uint32_t next_time;
+ int16_t samples[10*160];
+ size_t sample_cnt;
+ size_t sample_offs;
+};
+
+
+int mgcp_transcoding_setup(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_end *dst_end,
+ struct mgcp_rtp_end *src_end);
+
+void mgcp_transcoding_net_downlink_format(struct mgcp_endpoint *endp,
+ int *payload_type,
+ const char**audio_name,
+ const char**fmtp_extra);
+
+int mgcp_transcoding_process_rtp(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_end *dst_end,
+ char *data, int *len, int buf_size);
+
+int mgcp_transcoding_get_frame_size(void *state_, int nsamples, int dst);
+#endif /* OPENBSC_MGCP_TRANSCODE_H */
diff --git a/include/osmocom/legacy_mgcp/osmux.h b/include/osmocom/legacy_mgcp/osmux.h
new file mode 100644
index 0000000..f3ea72a
--- /dev/null
+++ b/include/osmocom/legacy_mgcp/osmux.h
@@ -0,0 +1,41 @@
+#ifndef _OPENBSC_OSMUX_H_
+#define _OPENBSC_OSMUX_H_
+
+#include <osmocom/netif/osmux.h>
+
+#define OSMUX_PORT 1984
+
+enum {
+ OSMUX_ROLE_BSC = 0,
+ OSMUX_ROLE_BSC_NAT,
+};
+
+int osmux_init(int role, struct mgcp_config *cfg);
+int osmux_enable_endpoint(struct mgcp_endpoint *endp, struct in_addr *addr, uint16_t port);
+void osmux_disable_endpoint(struct mgcp_endpoint *endp);
+void osmux_allocate_cid(struct mgcp_endpoint *endp);
+void osmux_release_cid(struct mgcp_endpoint *endp);
+
+int osmux_xfrm_to_rtp(struct mgcp_endpoint *endp, int type, char *buf, int rc);
+int osmux_xfrm_to_osmux(int type, char *buf, int rc, struct mgcp_endpoint *endp);
+
+int osmux_send_dummy(struct mgcp_endpoint *endp);
+
+int osmux_get_cid(void);
+void osmux_put_cid(uint8_t osmux_cid);
+int osmux_used_cid(void);
+
+enum osmux_state {
+ OSMUX_STATE_DISABLED = 0,
+ OSMUX_STATE_NEGOTIATING,
+ OSMUX_STATE_ACTIVATING,
+ OSMUX_STATE_ENABLED,
+};
+
+enum osmux_usage {
+ OSMUX_USAGE_OFF = 0,
+ OSMUX_USAGE_ON = 1,
+ OSMUX_USAGE_ONLY = 2,
+};
+
+#endif
diff --git a/include/osmocom/legacy_mgcp/vty.h b/include/osmocom/legacy_mgcp/vty.h
new file mode 100644
index 0000000..c277c0a
--- /dev/null
+++ b/include/osmocom/legacy_mgcp/vty.h
@@ -0,0 +1,31 @@
+#ifndef OPENBSC_VTY_H
+#define OPENBSC_VTY_H
+
+#include <osmocom/vty/vty.h>
+#include <osmocom/vty/buffer.h>
+#include <osmocom/vty/command.h>
+
+struct gsm_network;
+struct vty;
+
+void openbsc_vty_print_statistics(struct vty *vty, struct gsm_network *);
+
+struct buffer *vty_argv_to_buffer(int argc, const char *argv[], int base);
+
+extern struct cmd_element cfg_description_cmd;
+extern struct cmd_element cfg_no_description_cmd;
+
+enum mgcp_vty_node {
+ MGCP_NODE = _LAST_OSMOVTY_NODE + 1,
+ TRUNK_NODE,
+};
+
+struct log_info;
+int bsc_vty_init(struct gsm_network *network);
+int bsc_vty_init_extra(void);
+
+void msc_vty_init(struct gsm_network *msc_network);
+
+struct gsm_network *gsmnet_from_vty(struct vty *vty);
+
+#endif
diff --git a/include/osmocom/mgcp/Makefile.am b/include/osmocom/mgcp/Makefile.am
new file mode 100644
index 0000000..d706807
--- /dev/null
+++ b/include/osmocom/mgcp/Makefile.am
@@ -0,0 +1,9 @@
+noinst_HEADERS = \
+ vty.h \
+ mgcp_msg.h \
+ mgcp_conn.h \
+ mgcp_stat.h \
+ mgcp_ep.h \
+ mgcp_sdp.h \
+ debug.h \
+ $(NULL)
diff --git a/include/osmocom/mgcp/debug.h b/include/osmocom/mgcp/debug.h
new file mode 100644
index 0000000..ddeb0dc
--- /dev/null
+++ b/include/osmocom/mgcp/debug.h
@@ -0,0 +1,35 @@
+/* (C) 2017 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
+ * All Rights Reserved
+ *
+ * Author: Philipp Maier
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#pragma once
+
+#include <stdio.h>
+#include <osmocom/core/linuxlist.h>
+
+#define DEBUG
+#include <osmocom/core/logging.h>
+
+/* Debug Areas of the code */
+enum {
+ DRTP,
+ Debug_LastEntry,
+};
+
+extern const struct log_info log_info;
diff --git a/include/osmocom/mgcp/mgcp.h b/include/osmocom/mgcp/mgcp.h
new file mode 100644
index 0000000..42a91d8
--- /dev/null
+++ b/include/osmocom/mgcp/mgcp.h
@@ -0,0 +1,236 @@
+/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
+
+/*
+ * (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2012 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#pragma once
+
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/write_queue.h>
+#include <osmocom/core/timer.h>
+#include <osmocom/core/logging.h>
+
+#include <osmocom/mgcp/mgcp_common.h>
+
+#include <arpa/inet.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+#define RTP_PORT_DEFAULT_RANGE_START 16002
+#define RTP_PORT_DEFAULT_RANGE_END RTP_PORT_DEFAULT_RANGE_START + 64
+
+/*
+ * Handling of MGCP Endpoints and the MGCP Config
+ */
+struct mgcp_endpoint;
+struct mgcp_config;
+struct mgcp_trunk_config;
+struct mgcp_rtp_end;
+
+#define MGCP_ENDP_CRCX 1
+#define MGCP_ENDP_DLCX 2
+#define MGCP_ENDP_MDCX 3
+
+/*
+ * what to do with the msg?
+ * - continue as usual?
+ * - reject and send a failure code?
+ * - defer? do not send anything
+ */
+#define MGCP_POLICY_CONT 4
+#define MGCP_POLICY_REJECT 5
+#define MGCP_POLICY_DEFER 6
+
+typedef int (*mgcp_realloc)(struct mgcp_trunk_config *cfg, int endpoint);
+typedef int (*mgcp_change)(struct mgcp_trunk_config *cfg, int endpoint, int state);
+typedef int (*mgcp_policy)(struct mgcp_trunk_config *cfg, int endpoint, int state, const char *transactio_id);
+typedef int (*mgcp_reset)(struct mgcp_trunk_config *cfg);
+typedef int (*mgcp_rqnt)(struct mgcp_endpoint *endp, char tone);
+
+/**
+ * Return:
+ * < 0 in case no audio was processed
+ * >= 0 in case audio was processed. The remaining payload
+ * length will be returned.
+ */
+typedef int (*mgcp_processing)(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_end *dst_end,
+ char *data, int *len, int buf_size);
+typedef int (*mgcp_processing_setup)(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_end *dst_end,
+ struct mgcp_rtp_end *src_end);
+
+struct mgcp_conn_rtp;
+typedef void (*mgcp_get_format)(struct mgcp_endpoint *endp,
+ int *payload_type,
+ const char**subtype_name,
+ const char**fmtp_extra,
+ struct mgcp_conn_rtp *conn);
+
+/**
+ * This holds information on how to allocate ports
+ */
+struct mgcp_port_range {
+ /* addr or NULL to fall-back to default */
+ char *bind_addr;
+
+ /* dynamically allocated */
+ int range_start;
+ int range_end;
+ int last_port;
+
+ /* set to true to enable automatic probing
+ * of the local bind IP-Address, bind_addr
+ * (or its fall back) is used when automatic
+ * probing fails */
+ bool bind_addr_probe;
+};
+
+/* There are up to three modes in which the keep-alive dummy packet can be
+ * sent. The beviour is controlled viw the keepalive_interval member of the
+ * trunk config. If that member is set to 0 (MGCP_KEEPALIVE_NEVER) no dummy-
+ * packet is sent at all and the timer that sends regular dummy packets
+ * is no longer scheduled. If the keepalive_interval is set to -1, only
+ * one dummy packet is sent when an CRCX or an MDCX is performed. No timer
+ * is scheduled. For all vales greater 0, the a timer is scheduled and the
+ * value is used as interval. See also mgcp_keepalive_timer_cb(),
+ * handle_modify_con(), and handle_create_con() */
+#define MGCP_KEEPALIVE_ONCE (-1)
+#define MGCP_KEEPALIVE_NEVER 0
+
+struct mgcp_trunk_config {
+ struct llist_head entry;
+
+ struct mgcp_config *cfg;
+
+ int trunk_nr;
+ int trunk_type;
+
+ char *audio_fmtp_extra;
+ char *audio_name;
+ int audio_payload;
+ int audio_send_ptime;
+ int audio_send_name;
+ int audio_loop;
+
+ int no_audio_transcoding;
+
+ int omit_rtcp;
+ int keepalive_interval;
+
+ /* RTP patching */
+ int force_constant_ssrc; /* 0: don't, 1: once */
+ int force_aligned_timing;
+
+ /* spec handling */
+ int force_realloc;
+
+ /* timer */
+ struct osmo_timer_list keepalive_timer;
+
+ /* When set, incoming RTP packets are not filtered
+ * when ports and ip-address do not match (debug) */
+ int rtp_accept_all;
+
+ unsigned int number_endpoints;
+ struct mgcp_endpoint *endpoints;
+};
+
+enum mgcp_role {
+ MGCP_BSC = 0,
+ MGCP_BSC_NAT,
+};
+
+struct mgcp_config {
+ int source_port;
+ char *local_ip;
+ char *source_addr;
+ char *call_agent_addr;
+
+ /* RTP processing */
+ mgcp_processing rtp_processing_cb;
+ mgcp_processing_setup setup_rtp_processing_cb;
+
+ mgcp_get_format get_net_downlink_format_cb;
+
+ struct osmo_wqueue gw_fd;
+
+ struct mgcp_port_range net_ports;
+ int endp_dscp;
+
+ int force_ptime;
+
+ mgcp_change change_cb;
+ mgcp_policy policy_cb;
+ mgcp_reset reset_cb;
+ mgcp_realloc realloc_cb;
+ mgcp_rqnt rqnt_cb;
+ void *data;
+
+ uint32_t last_call_id;
+
+ /* trunk handling */
+ struct mgcp_trunk_config trunk;
+ struct llist_head trunks;
+
+ enum mgcp_role role;
+
+ /* osmux translator: 0 means disabled, 1 means enabled */
+ int osmux;
+ /* addr to bind the server to */
+ char *osmux_addr;
+ /* The BSC-NAT may ask for enabling osmux on demand. This tells us if
+ * the osmux socket is already initialized.
+ */
+ int osmux_init;
+ /* osmux batch factor: from 1 to 4 maximum */
+ int osmux_batch;
+ /* osmux batch size (in bytes) */
+ int osmux_batch_size;
+ /* osmux port */
+ uint16_t osmux_port;
+ /* Pad circuit with dummy messages until we see the first voice
+ * message.
+ */
+ uint16_t osmux_dummy;
+};
+
+/* config management */
+struct mgcp_config *mgcp_config_alloc(void);
+int mgcp_parse_config(const char *config_file, struct mgcp_config *cfg,
+ enum mgcp_role role);
+int mgcp_vty_init(void);
+int mgcp_endpoints_allocate(struct mgcp_trunk_config *cfg);
+void mgcp_release_endp(struct mgcp_endpoint *endp);
+void mgcp_trunk_set_keepalive(struct mgcp_trunk_config *tcfg, int interval);
+
+/*
+ * format helper functions
+ */
+struct msgb *mgcp_handle_message(struct mgcp_config *cfg, struct msgb *msg);
+
+
+int mgcp_send_reset_ep(struct mgcp_endpoint *endp, int endpoint);
+int mgcp_send_reset_all(struct mgcp_config *cfg);
+
+
+int mgcp_create_bind(const char *source_addr, struct osmo_fd *fd, int port);
+int mgcp_udp_send(int fd, struct in_addr *addr, int port, char *buf, int len);
diff --git a/include/osmocom/mgcp/mgcp_common.h b/include/osmocom/mgcp/mgcp_common.h
new file mode 100644
index 0000000..0eb1388
--- /dev/null
+++ b/include/osmocom/mgcp/mgcp_common.h
@@ -0,0 +1,71 @@
+/* MGCP common implementations.
+ * These are used in libosmo-mgcp as well as libosmo-mgcp-client.
+ * To avoid interdependency, these are implemented in .h file only. */
+
+/*
+ * (C) 2017 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
+ * (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2012 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/* Two copies of this file are kept in osmocom/mgcp/ and osmocom/mgcp_client/.
+ * Since both are by definition identical, use the old header exclusion ifdefs
+ * instead of '#pragma once' to avoid including both of these files.
+ * Though at the time of writing there are no such users, this allows including
+ * both libosmo-mgcp and libosmo-mgcp-client headers in the same file. */
+#ifndef OSMO_MGCP_COMMON_H
+#define OSMO_MGCP_COMMON_H
+
+#include <string.h>
+#include <errno.h>
+
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/logging.h>
+
+#define for_each_non_empty_line(line, save) \
+ for (line = strtok_r(NULL, "\r\n", &save); line; \
+ line = strtok_r(NULL, "\r\n", &save))
+
+enum mgcp_connection_mode {
+ MGCP_CONN_NONE = 0,
+ MGCP_CONN_RECV_ONLY = 1,
+ MGCP_CONN_SEND_ONLY = 2,
+ MGCP_CONN_RECV_SEND = MGCP_CONN_RECV_ONLY | MGCP_CONN_SEND_ONLY,
+ MGCP_CONN_LOOPBACK = 4 | MGCP_CONN_RECV_SEND,
+};
+
+/* Ensure that the msg->l2h is NUL terminated. */
+static inline int mgcp_msg_terminate_nul(struct msgb *msg)
+{
+ unsigned char *tail = msg->l2h + msgb_l2len(msg); /* char after l2 data */
+ if (tail[-1] == '\0')
+ /* nothing to do */;
+ else if (msgb_tailroom(msg) > 0)
+ tail[0] = '\0';
+ else if (tail[-1] == '\r' || tail[-1] == '\n')
+ tail[-1] = '\0';
+ else {
+ LOGP(DLMGCP, LOGL_ERROR, "Cannot NUL terminate MGCP message: "
+ "Length: %d, Buffer size: %d\n",
+ msgb_l2len(msg), msg->data_len);
+ return -ENOTSUP;
+ }
+ return 0;
+}
+
+#endif
diff --git a/include/osmocom/mgcp/mgcp_conn.h b/include/osmocom/mgcp/mgcp_conn.h
new file mode 100644
index 0000000..e0ae021
--- /dev/null
+++ b/include/osmocom/mgcp/mgcp_conn.h
@@ -0,0 +1,40 @@
+/* Message connection list handling */
+
+/*
+ * (C) 2017 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
+ * All Rights Reserved
+ *
+ * Author: Philipp Maier
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#pragma once
+
+#include <osmocom/mgcp/mgcp_internal.h>
+#include <osmocom/core/linuxlist.h>
+#include <inttypes.h>
+
+struct mgcp_conn *mgcp_conn_alloc(void *ctx, struct mgcp_endpoint *endp,
+ uint32_t id, enum mgcp_conn_type type,
+ char *name);
+struct mgcp_conn *mgcp_conn_get(struct mgcp_endpoint *endp, uint32_t id);
+struct mgcp_conn_rtp *mgcp_conn_get_rtp(struct mgcp_endpoint *endp,
+ uint32_t id);
+void mgcp_conn_free(struct mgcp_endpoint *endp, uint32_t id);
+void mgcp_conn_free_oldest(struct mgcp_endpoint *endp);
+void mgcp_conn_free_all(struct mgcp_endpoint *endp);
+char *mgcp_conn_dump(struct mgcp_conn *conn);
+struct mgcp_conn *mgcp_find_dst_conn(struct mgcp_conn *conn);
diff --git a/include/osmocom/mgcp/mgcp_ep.h b/include/osmocom/mgcp/mgcp_ep.h
new file mode 100644
index 0000000..e477a47
--- /dev/null
+++ b/include/osmocom/mgcp/mgcp_ep.h
@@ -0,0 +1,50 @@
+/* Endpoint types */
+
+/*
+ * (C) 2017 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
+ * All Rights Reserved
+ *
+ * Author: Philipp Maier
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#pragma once
+
+struct sockaddr_in;
+struct mgcp_conn;
+
+/* Callback type for RTP dispatcher functions
+ (e.g mgcp_dispatch_rtp_bridge_cb, see below) */
+typedef int (*mgcp_dispatch_rtp_cb) (int proto, struct sockaddr_in * addr,
+ char *buf, unsigned int buf_size,
+ struct mgcp_conn * conn);
+
+/*! MGCP endpoint properties */
+struct mgcp_endpoint_type {
+ /*!< maximum number of connections */
+ int max_conns;
+
+ /*!< callback that defines how to dispatch incoming RTP data */
+ mgcp_dispatch_rtp_cb dispatch_rtp_cb;
+};
+
+/*! MGCP endpoint typeset */
+struct mgcp_endpoint_typeset {
+ struct mgcp_endpoint_type rtp;
+};
+
+/*! static MGCP endpoint typeset (pre-initalized, read-only) */
+extern const struct mgcp_endpoint_typeset ep_typeset;
diff --git a/include/osmocom/mgcp/mgcp_internal.h b/include/osmocom/mgcp/mgcp_internal.h
new file mode 100644
index 0000000..b9c1731
--- /dev/null
+++ b/include/osmocom/mgcp/mgcp_internal.h
@@ -0,0 +1,321 @@
+/* MGCP Private Data */
+
+/*
+ * (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2012 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#pragma once
+
+#include <string.h>
+#include <inttypes.h>
+#include <osmocom/core/select.h>
+#include <osmocom/mgcp/mgcp.h>
+#include <osmocom/core/linuxlist.h>
+
+#define CI_UNUSED 0
+
+#define CONN_ID_BTS 0
+#define CONN_ID_NET 1
+
+enum mgcp_trunk_type {
+ MGCP_TRUNK_VIRTUAL,
+ MGCP_TRUNK_E1,
+};
+
+struct mgcp_rtp_stream_state {
+ uint32_t ssrc;
+ uint16_t last_seq;
+ uint32_t last_timestamp;
+ uint32_t err_ts_counter;
+ int32_t last_tsdelta;
+ uint32_t last_arrival_time;
+};
+
+struct mgcp_rtp_state {
+ int initialized;
+ int patch_ssrc;
+
+ uint32_t orig_ssrc;
+
+ int seq_offset;
+
+ int32_t timestamp_offset;
+ uint32_t packet_duration;
+
+ struct mgcp_rtp_stream_state in_stream;
+ struct mgcp_rtp_stream_state out_stream;
+
+ /* jitter and packet loss calculation */
+ int stats_initialized;
+ uint16_t stats_base_seq;
+ uint16_t stats_max_seq;
+ uint32_t stats_ssrc;
+ uint32_t stats_jitter;
+ int32_t stats_transit;
+ int stats_cycles;
+ bool patched_first_rtp_payload; /* FIXME: drop this, see OS#2459 */
+};
+
+struct mgcp_rtp_codec {
+ uint32_t rate;
+ int channels;
+ uint32_t frame_duration_num;
+ uint32_t frame_duration_den;
+
+ int payload_type;
+ char *audio_name;
+ char *subtype_name;
+};
+
+struct mgcp_rtp_end {
+ /* statistics */
+ unsigned int packets_rx;
+ unsigned int octets_rx;
+ unsigned int packets_tx;
+ unsigned int octets_tx;
+ unsigned int dropped_packets;
+ struct in_addr addr;
+
+ /* in network byte order */
+ int rtp_port, rtcp_port;
+
+ /* audio codec information */
+ struct mgcp_rtp_codec codec;
+ struct mgcp_rtp_codec alt_codec; /* TODO/XXX: make it generic */
+
+ /* per endpoint data */
+ int frames_per_packet;
+ uint32_t packet_duration_ms;
+ char *fmtp_extra;
+ int output_enabled;
+ int force_output_ptime;
+
+ /* RTP patching */
+ int force_constant_ssrc; /* -1: always, 0: don't, 1: once */
+ int force_aligned_timing;
+ void *rtp_process_data;
+
+ /* Each end has a separate socket for RTP and RTCP */
+ struct osmo_fd rtp;
+ struct osmo_fd rtcp;
+
+ int local_port;
+};
+
+struct mgcp_rtp_tap {
+ int enabled;
+ struct sockaddr_in forward;
+};
+
+struct mgcp_lco {
+ char *string;
+ char *codec;
+ int pkt_period_min; /* time in ms */
+ int pkt_period_max; /* time in ms */
+};
+
+/* Specific rtp connection type (see struct mgcp_conn_rtp) */
+enum mgcp_conn_rtp_type {
+ MGCP_RTP_DEFAULT = 0,
+ MGCP_OSMUX_BSC,
+ MGCP_OSMUX_BSC_NAT,
+};
+
+#include <osmocom/mgcp/osmux.h>
+struct mgcp_conn;
+
+/* MGCP connection (RTP) */
+struct mgcp_conn_rtp {
+
+ /* Backpointer to conn struct */
+ struct mgcp_conn *conn;
+
+ /* Specific connection type */
+ enum mgcp_conn_rtp_type type;
+
+ /* Port status */
+ struct mgcp_rtp_end end;
+
+ /* Sequence bits */
+ struct mgcp_rtp_state state;
+
+ /* taps for the rtp connection */
+ struct mgcp_rtp_tap tap_in;
+ struct mgcp_rtp_tap tap_out;
+
+ /* Osmux states (optional) */
+ struct {
+ /* Osmux state: disabled, activating, active */
+ enum osmux_state state;
+ /* Allocated Osmux circuit ID for this endpoint */
+ int allocated_cid;
+ /* Used Osmux circuit ID for this endpoint */
+ uint8_t cid;
+ /* handle to batch messages */
+ struct osmux_in_handle *in;
+ /* handle to unbatch messages */
+ struct osmux_out_handle out;
+ /* statistics */
+ struct {
+ uint32_t chunks;
+ uint32_t octets;
+ } stats;
+ } osmux;
+};
+
+/*! Connection type, specifies which member of the union "u" in mgcp_conn
+ * contains a useful connection description (currently only RTP) */
+enum mgcp_conn_type {
+ MGCP_CONN_TYPE_RTP,
+};
+
+/*! MGCP connection (untyped) */
+struct mgcp_conn {
+ /*!< list head */
+ struct llist_head entry;
+
+ /*!< Backpointer to the endpoint where the conn belongs to */
+ struct mgcp_endpoint *endp;
+
+ /*!< type of the connection (union) */
+ enum mgcp_conn_type type;
+
+ /*!< mode of the connection */
+ enum mgcp_connection_mode mode;
+
+ /*!< copy of the mode to restore the original setting (VTY) */
+ enum mgcp_connection_mode mode_orig;
+
+ /*!< connection id to identify the conntion */
+ uint32_t id;
+
+ /*!< human readable name (vty, logging) */
+ char name[256];
+
+ /*!< union with connection description */
+ union {
+ struct mgcp_conn_rtp rtp;
+ } u;
+
+ /*!< pointer to optional private data */
+ void *priv;
+};
+
+#include <osmocom/mgcp/mgcp_conn.h>
+
+struct mgcp_endpoint_type;
+
+struct mgcp_endpoint {
+ char *callid;
+ struct mgcp_lco local_options;
+
+ struct llist_head conns;
+
+ /* backpointer */
+ struct mgcp_config *cfg;
+ struct mgcp_trunk_config *tcfg;
+
+ const struct mgcp_endpoint_type *type;
+
+ /* fields for re-transmission */
+ char *last_trans;
+ char *last_response;
+};
+
+
+#define ENDPOINT_NUMBER(endp) abs((int)(endp - endp->tcfg->endpoints))
+
+/**
+ * Internal structure while parsing a request
+ */
+struct mgcp_parse_data {
+ struct mgcp_config *cfg;
+ struct mgcp_endpoint *endp;
+ char *trans;
+ char *save;
+ int found;
+};
+
+int mgcp_send(struct mgcp_endpoint *endp, int is_rtp, struct sockaddr_in *addr,
+ char *buf, int rc, struct mgcp_conn_rtp *conn_src,
+ struct mgcp_conn_rtp *conn_dst);
+int mgcp_send_dummy(struct mgcp_endpoint *endp, struct mgcp_conn_rtp *conn);
+int mgcp_dispatch_rtp_bridge_cb(int proto, struct sockaddr_in *addr, char *buf,
+ unsigned int buf_size, struct mgcp_conn *conn);
+int mgcp_bind_net_rtp_port(struct mgcp_endpoint *endp, int rtp_port,
+ struct mgcp_conn_rtp *conn);
+void mgcp_free_rtp_port(struct mgcp_rtp_end *end);
+
+/* For transcoding we need to manage an in and an output that are connected */
+static inline int endp_back_channel(int endpoint)
+{
+ return endpoint + 60;
+}
+
+struct mgcp_trunk_config *mgcp_trunk_alloc(struct mgcp_config *cfg, int index);
+struct mgcp_trunk_config *mgcp_trunk_num(struct mgcp_config *cfg, int index);
+
+void mgcp_rtp_end_config(struct mgcp_endpoint *endp, int expect_ssrc_change,
+ struct mgcp_rtp_end *rtp);
+uint32_t mgcp_rtp_packet_duration(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_end *rtp);
+
+/* payload processing default functions */
+int mgcp_rtp_processing_default(struct mgcp_endpoint *endp, struct mgcp_rtp_end *dst_end,
+ char *data, int *len, int buf_size);
+
+int mgcp_setup_rtp_processing_default(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_end *dst_end,
+ struct mgcp_rtp_end *src_end);
+
+void mgcp_get_net_downlink_format_default(struct mgcp_endpoint *endp,
+ int *payload_type,
+ const char**audio_name,
+ const char**fmtp_extra,
+ struct mgcp_conn_rtp *conn);
+
+/* internal RTP Annex A counting */
+void mgcp_rtp_annex_count(struct mgcp_endpoint *endp, struct mgcp_rtp_state *state,
+ const uint16_t seq, const int32_t transit,
+ const uint32_t ssrc);
+
+int mgcp_set_ip_tos(int fd, int tos);
+
+enum {
+ MGCP_DEST_NET = 0,
+ MGCP_DEST_BTS,
+};
+
+
+#define MGCP_DUMMY_LOAD 0x23
+
+
+/**
+ * SDP related information
+ */
+/* Assume audio frame length of 20ms */
+#define DEFAULT_RTP_AUDIO_FRAME_DUR_NUM 20
+#define DEFAULT_RTP_AUDIO_FRAME_DUR_DEN 1000
+#define DEFAULT_RTP_AUDIO_PACKET_DURATION_MS 20
+#define DEFAULT_RTP_AUDIO_DEFAULT_RATE 8000
+#define DEFAULT_RTP_AUDIO_DEFAULT_CHANNELS 1
+
+#define PTYPE_UNDEFINED (-1)
+
+void mgcp_get_local_addr(char *addr, struct mgcp_conn_rtp *conn);
diff --git a/include/osmocom/mgcp/mgcp_msg.h b/include/osmocom/mgcp/mgcp_msg.h
new file mode 100644
index 0000000..b7d52bb
--- /dev/null
+++ b/include/osmocom/mgcp/mgcp_msg.h
@@ -0,0 +1,58 @@
+/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
+/* Message parser/generator utilities */
+
+/*
+ * (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2012 by On-Waves
+ * (C) 2017 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+struct mgcp_conn;
+struct mgcp_parse_data;
+struct mgcp_endpoint;
+
+void mgcp_disp_msg(unsigned char *message, unsigned int len, char *preamble);
+
+int mgcp_parse_conn_mode(const char *msg, struct mgcp_endpoint *endp,
+ struct mgcp_conn *conn);
+
+int mgcp_parse_header(struct mgcp_parse_data *pdata, char *data);
+
+int mgcp_parse_osmux_cid(const char *line);
+
+int mgcp_check_param(const struct mgcp_endpoint *endp, const char *line);
+
+int mgcp_verify_call_id(struct mgcp_endpoint *endp, const char *callid);
+
+int mgcp_verify_ci(struct mgcp_endpoint *endp, const char *ci);
+
+char *mgcp_strline(char *str, char **saveptr);
+
+#define for_each_line(line, save)\
+ for (line = mgcp_strline(NULL, &save); line;\
+ line = mgcp_strline(NULL, &save))
+
+#define for_each_non_empty_line(line, save)\
+ for (line = strtok_r(NULL, "\r\n", &save); line;\
+ line = strtok_r(NULL, "\r\n", &save))
+
+int mgcp_parse_ci(uint32_t *conn_id, const char *ci);
diff --git a/include/osmocom/mgcp/mgcp_sdp.h b/include/osmocom/mgcp/mgcp_sdp.h
new file mode 100644
index 0000000..da23cba
--- /dev/null
+++ b/include/osmocom/mgcp/mgcp_sdp.h
@@ -0,0 +1,35 @@
+/*
+ * SDP generation and parsing
+ *
+ * (C) 2009-2015 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2014 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#pragma once
+#include <osmocom/mgcp/mgcp_sdp.h>
+
+int mgcp_parse_sdp_data(const struct mgcp_endpoint *endp,
+ struct mgcp_conn_rtp *conn,
+ struct mgcp_parse_data *p);
+
+int mgcp_set_audio_info(void *ctx, struct mgcp_rtp_codec *codec,
+ int payload_type, const char *audio_name);
+
+int mgcp_write_response_sdp(const struct mgcp_endpoint *endp,
+ const struct mgcp_conn_rtp *conn, struct msgb *sdp,
+ const char *addr);
diff --git a/include/osmocom/mgcp/mgcp_stat.h b/include/osmocom/mgcp/mgcp_stat.h
new file mode 100644
index 0000000..b6c73fa
--- /dev/null
+++ b/include/osmocom/mgcp/mgcp_stat.h
@@ -0,0 +1,37 @@
+/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
+/* The statistics generator */
+
+/*
+ * (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2012 by On-Waves
+ * (C) 2017 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#pragma once
+
+#include <osmocom/mgcp/mgcp_internal.h>
+#include <inttypes.h>
+
+void mgcp_format_stats(char *str, size_t str_len, struct mgcp_conn *conn);
+
+/* Exposed for test purposes only, do not use actively */
+void calc_loss(struct mgcp_rtp_state *s, struct mgcp_rtp_end *,
+ uint32_t *expected, int *loss);
+
+/* Exposed for test purposes only, do not use actively */
+uint32_t calc_jitter(struct mgcp_rtp_state *);
diff --git a/include/osmocom/mgcp/osmux.h b/include/osmocom/mgcp/osmux.h
new file mode 100644
index 0000000..ea849c8
--- /dev/null
+++ b/include/osmocom/mgcp/osmux.h
@@ -0,0 +1,38 @@
+#pragma once
+
+
+#include <osmocom/netif/osmux.h>
+struct mgcp_conn_rtp;
+
+#define OSMUX_PORT 1984
+
+enum {
+ OSMUX_ROLE_BSC = 0,
+ OSMUX_ROLE_BSC_NAT,
+};
+
+int osmux_init(int role, struct mgcp_config *cfg);
+int osmux_enable_conn(struct mgcp_endpoint *endp, struct mgcp_conn_rtp *conn,
+ struct in_addr *addr, uint16_t port);
+void osmux_disable_conn(struct mgcp_conn_rtp *conn);
+void osmux_allocate_cid(struct mgcp_conn_rtp *conn);
+void osmux_release_cid(struct mgcp_conn_rtp *conn);
+int osmux_xfrm_to_osmux(char *buf, int buf_len, struct mgcp_conn_rtp *conn);
+int osmux_send_dummy(struct mgcp_endpoint *endp, struct mgcp_conn_rtp *conn);
+int osmux_get_cid(void);
+void osmux_put_cid(uint8_t osmux_cid);
+int osmux_used_cid(void);
+
+enum osmux_state {
+ OSMUX_STATE_DISABLED = 0,
+ OSMUX_STATE_NEGOTIATING,
+ OSMUX_STATE_ACTIVATING,
+ OSMUX_STATE_ENABLED,
+};
+
+enum osmux_usage {
+ OSMUX_USAGE_OFF = 0,
+ OSMUX_USAGE_ON = 1,
+ OSMUX_USAGE_ONLY = 2,
+};
+
diff --git a/include/osmocom/mgcp/vty.h b/include/osmocom/mgcp/vty.h
new file mode 100644
index 0000000..c277c0a
--- /dev/null
+++ b/include/osmocom/mgcp/vty.h
@@ -0,0 +1,31 @@
+#ifndef OPENBSC_VTY_H
+#define OPENBSC_VTY_H
+
+#include <osmocom/vty/vty.h>
+#include <osmocom/vty/buffer.h>
+#include <osmocom/vty/command.h>
+
+struct gsm_network;
+struct vty;
+
+void openbsc_vty_print_statistics(struct vty *vty, struct gsm_network *);
+
+struct buffer *vty_argv_to_buffer(int argc, const char *argv[], int base);
+
+extern struct cmd_element cfg_description_cmd;
+extern struct cmd_element cfg_no_description_cmd;
+
+enum mgcp_vty_node {
+ MGCP_NODE = _LAST_OSMOVTY_NODE + 1,
+ TRUNK_NODE,
+};
+
+struct log_info;
+int bsc_vty_init(struct gsm_network *network);
+int bsc_vty_init_extra(void);
+
+void msc_vty_init(struct gsm_network *msc_network);
+
+struct gsm_network *gsmnet_from_vty(struct vty *vty);
+
+#endif
diff --git a/include/osmocom/mgcp_client/Makefile.am b/include/osmocom/mgcp_client/Makefile.am
new file mode 100644
index 0000000..d303ddf
--- /dev/null
+++ b/include/osmocom/mgcp_client/Makefile.am
@@ -0,0 +1,13 @@
+BUILT_SOURCES = \
+ mgcp_common.h \
+ $(NULL)
+
+noinst_HEADERS = \
+ mgcp_client_internal.h \
+ $(NULL)
+
+mgcp_common.h: $(top_srcdir)/include/osmocom/mgcp/mgcp_common.h
+ echo -e "/*\n\n DO NOT EDIT THIS FILE!\n THIS IS OVERWRITTEN DURING BUILD\n This is an automatic copy of <osmocom/mgcp/mgcp_common.h>\n\n */" > mgcp_common.h
+ cat $(top_srcdir)/include/osmocom/mgcp/mgcp_common.h >> mgcp_common.h
+
+CLEANFILES = mgcp_common.h
diff --git a/include/osmocom/mgcp_client/mgcp_client.h b/include/osmocom/mgcp_client/mgcp_client.h
new file mode 100644
index 0000000..e91b190
--- /dev/null
+++ b/include/osmocom/mgcp_client/mgcp_client.h
@@ -0,0 +1,118 @@
+#pragma once
+
+#include <stdint.h>
+#include <arpa/inet.h>
+
+#include <osmocom/mgcp_client/mgcp_common.h>
+
+#define MGCP_CLIENT_LOCAL_ADDR_DEFAULT "0.0.0.0"
+#define MGCP_CLIENT_LOCAL_PORT_DEFAULT 0
+#define MGCP_CLIENT_REMOTE_ADDR_DEFAULT "127.0.0.1"
+#define MGCP_CLIENT_REMOTE_PORT_DEFAULT 2427
+
+struct msgb;
+struct vty;
+struct mgcp_client;
+
+struct mgcp_client_conf {
+ const char *local_addr;
+ int local_port;
+ const char *remote_addr;
+ int remote_port;
+ uint16_t first_endpoint;
+ uint16_t last_endpoint;
+ uint16_t bts_base;
+};
+
+typedef unsigned int mgcp_trans_id_t;
+
+struct mgcp_response_head {
+ int response_code;
+ mgcp_trans_id_t trans_id;
+ const char *comment;
+};
+
+struct mgcp_response {
+ char *body;
+ struct mgcp_response_head head;
+ uint16_t audio_port;
+ char audio_ip[INET_ADDRSTRLEN];
+};
+
+enum mgcp_verb {
+ MGCP_VERB_CRCX,
+ MGCP_VERB_MDCX,
+ MGCP_VERB_DLCX,
+ MGCP_VERB_AUEP,
+ MGCP_VERB_RSIP,
+};
+
+#define MGCP_MSG_PRESENCE_ENDPOINT 0x0001
+#define MGCP_MSG_PRESENCE_CALL_ID 0x0002
+#define MGCP_MSG_PRESENCE_CONN_ID 0x0004
+#define MGCP_MSG_PRESENCE_AUDIO_IP 0x0008
+#define MGCP_MSG_PRESENCE_AUDIO_PORT 0x0010
+#define MGCP_MSG_PRESENCE_CONN_MODE 0x0020
+
+/* See also RFC3435 section 3.2.1.3 */
+#define MGCP_ENDPOINT_MAXLEN (255*2+1+1)
+
+struct mgcp_msg {
+ enum mgcp_verb verb;
+ /* See MGCP_MSG_PRESENCE_* constants */
+ uint32_t presence;
+ char endpoint[MGCP_ENDPOINT_MAXLEN];
+ unsigned int call_id;
+ uint32_t conn_id;
+ uint16_t audio_port;
+ char *audio_ip;
+ enum mgcp_connection_mode conn_mode;
+};
+
+void mgcp_client_conf_init(struct mgcp_client_conf *conf);
+void mgcp_client_vty_init(void *talloc_ctx, int node, struct mgcp_client_conf *conf);
+int mgcp_client_config_write(struct vty *vty, const char *indent);
+struct mgcp_client_conf *mgcp_client_conf_actual(struct mgcp_client *mgcp);
+
+struct mgcp_client *mgcp_client_init(void *ctx,
+ struct mgcp_client_conf *conf);
+int mgcp_client_connect(struct mgcp_client *mgcp);
+
+const char *mgcp_client_remote_addr_str(struct mgcp_client *mgcp);
+uint16_t mgcp_client_remote_port(struct mgcp_client *mgcp);
+uint32_t mgcp_client_remote_addr_n(struct mgcp_client *mgcp);
+
+int mgcp_client_next_endpoint(struct mgcp_client *client);
+void mgcp_client_release_endpoint(uint16_t id, struct mgcp_client *client);
+
+/* Invoked when an MGCP response is received or sending failed. When the
+ * response is passed as NULL, this indicates failure during transmission. */
+typedef void (* mgcp_response_cb_t )(struct mgcp_response *response, void *priv);
+int mgcp_response_parse_params(struct mgcp_response *r);
+
+int mgcp_client_tx(struct mgcp_client *mgcp, struct msgb *msg,
+ mgcp_response_cb_t response_cb, void *priv);
+
+enum mgcp_connection_mode;
+
+struct msgb *mgcp_msg_crcx(struct mgcp_client *mgcp,
+ uint16_t rtp_endpoint, unsigned int call_id,
+ enum mgcp_connection_mode mode)
+OSMO_DEPRECATED("Use mgcp_msg_gen() instead");
+
+struct msgb *mgcp_msg_mdcx(struct mgcp_client *mgcp,
+ uint16_t rtp_endpoint, const char *rtp_conn_addr,
+ uint16_t rtp_port, enum mgcp_connection_mode mode)
+OSMO_DEPRECATED("Use mgcp_msg_gen() instead");
+
+struct msgb *mgcp_msg_dlcx(struct mgcp_client *mgcp, uint16_t rtp_endpoint,
+ unsigned int call_id)
+OSMO_DEPRECATED("Use mgcp_msg_gen() instead");
+
+struct msgb *mgcp_msg_gen(struct mgcp_client *mgcp, struct mgcp_msg *mgcp_msg);
+
+extern const struct value_string mgcp_client_connection_mode_strs[];
+static inline const char *mgcp_client_cmode_name(enum mgcp_connection_mode mode)
+{
+ return get_value_string(mgcp_client_connection_mode_strs, mode);
+}
diff --git a/include/osmocom/mgcp_client/mgcp_client_internal.h b/include/osmocom/mgcp_client/mgcp_client_internal.h
new file mode 100644
index 0000000..690a4af
--- /dev/null
+++ b/include/osmocom/mgcp_client/mgcp_client_internal.h
@@ -0,0 +1,35 @@
+#pragma once
+
+#include <osmocom/core/write_queue.h>
+
+#define MSGB_CB_MGCP_TRANS_ID 0
+
+struct mgcp_client {
+ struct mgcp_client_conf actual;
+ uint32_t remote_addr;
+ struct osmo_wqueue wq;
+ mgcp_trans_id_t next_trans_id;
+ struct llist_head responses_pending;
+ struct llist_head inuse_endpoints;
+};
+
+struct mgcp_inuse_endpoint {
+ struct llist_head entry;
+ uint16_t id;
+};
+
+struct mgcp_response_pending {
+ struct llist_head entry;
+
+ mgcp_trans_id_t trans_id;
+ mgcp_response_cb_t response_cb;
+ void *priv;
+};
+
+int mgcp_client_rx(struct mgcp_client *mgcp, struct msgb *msg);
+
+struct mgcp_response_pending * mgcp_client_pending_add(
+ struct mgcp_client *mgcp,
+ mgcp_trans_id_t trans_id,
+ mgcp_response_cb_t response_cb,
+ void *priv);
diff --git a/libosmo-legacy-mgcp.pc.in b/libosmo-legacy-mgcp.pc.in
new file mode 100644
index 0000000..62d9edc
--- /dev/null
+++ b/libosmo-legacy-mgcp.pc.in
@@ -0,0 +1,10 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: Osmocom legacy Media Gateway Control Protocol library
+Description: C Utility Library
+Version: @VERSION@
+Libs: -L${libdir} -losmo-legacy-mgcp
+Cflags: -I${includedir}/
diff --git a/libosmo-mgcp-client.pc.in b/libosmo-mgcp-client.pc.in
new file mode 100644
index 0000000..aee86dc
--- /dev/null
+++ b/libosmo-mgcp-client.pc.in
@@ -0,0 +1,10 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: Osmocom Media Gateway Control Protocol Client library
+Description: C Utility Library
+Version: @VERSION@
+Libs: -L${libdir} -losmo-mgcp-client
+Cflags: -I${includedir}/
diff --git a/libosmo-mgcp.pc.in b/libosmo-mgcp.pc.in
new file mode 100644
index 0000000..63b794a
--- /dev/null
+++ b/libosmo-mgcp.pc.in
@@ -0,0 +1,10 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: Osmocom Media Gateway Control Protocol library
+Description: C Utility Library
+Version: @VERSION@
+Libs: -L${libdir} -losmo-mgcp
+Cflags: -I${includedir}/
diff --git a/m4/README b/m4/README
new file mode 100644
index 0000000..92eb30b
--- /dev/null
+++ b/m4/README
@@ -0,0 +1,3 @@
+We want to avoid creating too many external build-time dependencies
+like this one to autoconf-archive. This directory provides a local
+copy of required m4 rules.
diff --git a/m4/ax_check_compile_flag.m4 b/m4/ax_check_compile_flag.m4
new file mode 100644
index 0000000..ca36397
--- /dev/null
+++ b/m4/ax_check_compile_flag.m4
@@ -0,0 +1,74 @@
+# ===========================================================================
+# http://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+# AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
+#
+# DESCRIPTION
+#
+# Check whether the given FLAG works with the current language's compiler
+# or gives an error. (Warnings, however, are ignored)
+#
+# ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
+# success/failure.
+#
+# If EXTRA-FLAGS is defined, it is added to the current language's default
+# flags (e.g. CFLAGS) when the check is done. The check is thus made with
+# the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to
+# force the compiler to issue an error when a bad flag is given.
+#
+# INPUT gives an alternative input source to AC_COMPILE_IFELSE.
+#
+# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
+# macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
+#
+# LICENSE
+#
+# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
+# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
+#
+# This program is free software: you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation, either version 3 of the License, or (at your
+# option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+# Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+# As a special exception, the respective Autoconf Macro's copyright owner
+# gives unlimited permission to copy, distribute and modify the configure
+# scripts that are the output of Autoconf when processing the Macro. You
+# need not follow the terms of the GNU General Public License when using
+# or distributing such scripts, even though portions of the text of the
+# Macro appear in them. The GNU General Public License (GPL) does govern
+# all other use of the material that constitutes the Autoconf Macro.
+#
+# This special exception to the GPL applies to versions of the Autoconf
+# Macro released by the Autoconf Archive. When you make and distribute a
+# modified version of the Autoconf Macro, you may extend this special
+# exception to the GPL to apply to your modified version as well.
+
+#serial 4
+
+AC_DEFUN([AX_CHECK_COMPILE_FLAG],
+[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
+AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
+AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
+ ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
+ _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
+ AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
+ [AS_VAR_SET(CACHEVAR,[yes])],
+ [AS_VAR_SET(CACHEVAR,[no])])
+ _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
+AS_VAR_IF(CACHEVAR,yes,
+ [m4_default([$2], :)],
+ [m4_default([$3], :)])
+AS_VAR_POPDEF([CACHEVAR])dnl
+])dnl AX_CHECK_COMPILE_FLAGS
diff --git a/osmoappdesc.py b/osmoappdesc.py
new file mode 100644
index 0000000..c9ebf03
--- /dev/null
+++ b/osmoappdesc.py
@@ -0,0 +1,30 @@
+#!/usr/bin/env python
+
+# (C) 2013 by Katerina Barone-Adesi <kat.obsc@gmail.com>
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>
+
+
+app_configs = {
+ "osmo-mgw": ["doc/examples/osmo-mgw/osmo-mgw.cfg"],
+ "osmo-bsc_mgcp": ["doc/examples/osmo-bsc_mgcp/mgcp.cfg"],
+}
+
+apps = [(4243, "src/osmo-mgw/osmo-mgw", "OsmoMGW", "osmo-mgw"),
+ (4243, "src/osmo-bsc_mgcp/osmo-bsc_mgcp", "OpenBSC MGCP", "osmo-bsc_mgcp"),
+ ]
+
+vty_command = ["./src/osmo-mgw/osmo-mgw", "-c",
+ "doc/examples/osmo-mgw/osmo-mgw.cfg"]
+
+vty_app = apps[0]
diff --git a/src/Makefile.am b/src/Makefile.am
new file mode 100644
index 0000000..fab1bf0
--- /dev/null
+++ b/src/Makefile.am
@@ -0,0 +1,33 @@
+AM_CPPFLAGS = \
+ $(all_includes) \
+ -I$(top_srcdir)/include \
+ -I$(top_builddir) \
+ $(NULL)
+
+AM_CFLAGS = \
+ -Wall \
+ $(LIBOSMOCORE_CFLAGS) \
+ $(LIBOSMOGSM_CFLAGS) \
+ $(LIBOSMOGSM_CFLAGS) \
+ $(LIBOSMOVTY_CFLAGS) \
+ $(COVERAGE_CFLAGS) \
+ $(NULL)
+
+AM_LDFLAGS = \
+ $(LIBOSMOCORE_LIBS) \
+ $(LIBOSMOGSM_LIBS) \
+ $(COVERAGE_LDFLAGS) \
+ $(NULL)
+
+# Libraries
+SUBDIRS = \
+ libosmo-legacy-mgcp \
+ libosmo-mgcp-client \
+ libosmo-mgcp \
+ $(NULL)
+
+# Programs
+SUBDIRS += \
+ osmo-bsc_mgcp \
+ osmo-mgw \
+ $(NULL)
diff --git a/src/libosmo-legacy-mgcp/Makefile.am b/src/libosmo-legacy-mgcp/Makefile.am
new file mode 100644
index 0000000..9160586
--- /dev/null
+++ b/src/libosmo-legacy-mgcp/Makefile.am
@@ -0,0 +1,51 @@
+AM_CPPFLAGS = \
+ $(all_includes) \
+ -I$(top_srcdir)/include \
+ -I$(top_builddir) \
+ $(NULL)
+
+AM_CFLAGS = \
+ -Wall \
+ $(LIBOSMOCORE_CFLAGS) \
+ $(LIBOSMOVTY_CFLAGS) \
+ $(LIBOSMONETIF_CFLAGS) \
+ $(COVERAGE_CFLAGS) \
+ $(LIBBCG729_CFLAGS) \
+ $(NULL)
+
+AM_LDFLAGS = \
+ $(LIBOSMOCORE_LIBS) \
+ $(LIBOSMOVTY_LIBS) \
+ $(LIBOSMONETIF_LIBS) \
+ $(COVERAGE_LDFLAGS) \
+ $(LIBBCG729_LIBS) \
+ $(LIBRARY_GSM) \
+ $(NULL)
+
+# This is not at all related to the release version, but a range of supported
+# API versions. Read TODO_RELEASE in the source tree's root!
+LEGACY_MGCP_LIBVERSION=0:0:0
+
+lib_LTLIBRARIES = \
+ libosmo-legacy-mgcp.la \
+ $(NULL)
+
+noinst_HEADERS = \
+ g711common.h \
+ $(NULL)
+
+libosmo_legacy_mgcp_la_SOURCES = \
+ mgcp_common.c \
+ mgcp_protocol.c \
+ mgcp_network.c \
+ mgcp_vty.c \
+ mgcp_osmux.c \
+ mgcp_sdp.c \
+ $(NULL)
+if BUILD_MGCP_TRANSCODING
+libosmo_legacy_mgcp_la_SOURCES += \
+ mgcp_transcode.c \
+ $(NULL)
+endif
+
+libosmo_legacy_mgcp_la_LDFLAGS = $(AM_LDFLAGS) -version-info $(LEGACY_MGCP_LIBVERSION)
diff --git a/src/libosmo-legacy-mgcp/g711common.h b/src/libosmo-legacy-mgcp/g711common.h
new file mode 100644
index 0000000..cb35fc6
--- /dev/null
+++ b/src/libosmo-legacy-mgcp/g711common.h
@@ -0,0 +1,187 @@
+/*
+ * PCM - A-Law conversion
+ * Copyright (c) 2000 by Abramo Bagnara <abramo@alsa-project.org>
+ *
+ * Wrapper for linphone Codec class by Simon Morlat <simon.morlat@linphone.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+static inline int val_seg(int val)
+{
+ int r = 0;
+ val >>= 7; /*7 = 4 + 3*/
+ if (val & 0xf0) {
+ val >>= 4;
+ r += 4;
+ }
+ if (val & 0x0c) {
+ val >>= 2;
+ r += 2;
+ }
+ if (val & 0x02)
+ r += 1;
+ return r;
+}
+
+/*
+ * s16_to_alaw() - Convert a 16-bit linear PCM value to 8-bit A-law
+ *
+ * s16_to_alaw() accepts an 16-bit integer and encodes it as A-law data.
+ *
+ * Linear Input Code Compressed Code
+ * ------------------------ ---------------
+ * 0000000wxyza 000wxyz
+ * 0000001wxyza 001wxyz
+ * 000001wxyzab 010wxyz
+ * 00001wxyzabc 011wxyz
+ * 0001wxyzabcd 100wxyz
+ * 001wxyzabcde 101wxyz
+ * 01wxyzabcdef 110wxyz
+ * 1wxyzabcdefg 111wxyz
+ *
+ * For further information see John C. Bellamy's Digital Telephony, 1982,
+ * John Wiley & Sons, pps 98-111 and 472-476.
+ * G711 is designed for 13 bits input signal, this function add extra shifting to take this into account.
+ */
+
+static inline unsigned char s16_to_alaw(int pcm_val)
+{
+ int mask;
+ int seg;
+ unsigned char aval;
+
+ if (pcm_val >= 0) {
+ mask = 0xD5;
+ } else {
+ mask = 0x55;
+ pcm_val = -pcm_val;
+ if (pcm_val > 0x7fff)
+ pcm_val = 0x7fff;
+ }
+
+ if (pcm_val < 256) /*256 = 32 << 3*/
+ aval = pcm_val >> 4; /*4 = 1 + 3*/
+ else {
+ /* Convert the scaled magnitude to segment number. */
+ seg = val_seg(pcm_val);
+ aval = (seg << 4) | ((pcm_val >> (seg + 3)) & 0x0f);
+ }
+ return aval ^ mask;
+}
+
+/*
+ * alaw_to_s16() - Convert an A-law value to 16-bit linear PCM
+ *
+ */
+static inline int alaw_to_s16(unsigned char a_val)
+{
+ int t;
+ int seg;
+
+ a_val ^= 0x55;
+ t = a_val & 0x7f;
+ if (t < 16)
+ t = (t << 4) + 8;
+ else {
+ seg = (t >> 4) & 0x07;
+ t = ((t & 0x0f) << 4) + 0x108;
+ t <<= seg -1;
+ }
+ return ((a_val & 0x80) ? t : -t);
+}
+/*
+ * s16_to_ulaw() - Convert a linear PCM value to u-law
+ *
+ * In order to simplify the encoding process, the original linear magnitude
+ * is biased by adding 33 which shifts the encoding range from (0 - 8158) to
+ * (33 - 8191). The result can be seen in the following encoding table:
+ *
+ * Biased Linear Input Code Compressed Code
+ * ------------------------ ---------------
+ * 00000001wxyza 000wxyz
+ * 0000001wxyzab 001wxyz
+ * 000001wxyzabc 010wxyz
+ * 00001wxyzabcd 011wxyz
+ * 0001wxyzabcde 100wxyz
+ * 001wxyzabcdef 101wxyz
+ * 01wxyzabcdefg 110wxyz
+ * 1wxyzabcdefgh 111wxyz
+ *
+ * Each biased linear code has a leading 1 which identifies the segment
+ * number. The value of the segment number is equal to 7 minus the number
+ * of leading 0's. The quantization interval is directly available as the
+ * four bits wxyz. * The trailing bits (a - h) are ignored.
+ *
+ * Ordinarily the complement of the resulting code word is used for
+ * transmission, and so the code word is complemented before it is returned.
+ *
+ * For further information see John C. Bellamy's Digital Telephony, 1982,
+ * John Wiley & Sons, pps 98-111 and 472-476.
+ */
+
+static inline unsigned char s16_to_ulaw(int pcm_val) /* 2's complement (16-bit range) */
+{
+ int mask;
+ int seg;
+ unsigned char uval;
+
+ if (pcm_val < 0) {
+ pcm_val = 0x84 - pcm_val;
+ mask = 0x7f;
+ } else {
+ pcm_val += 0x84;
+ mask = 0xff;
+ }
+ if (pcm_val > 0x7fff)
+ pcm_val = 0x7fff;
+
+ /* Convert the scaled magnitude to segment number. */
+ seg = val_seg(pcm_val);
+
+ /*
+ * Combine the sign, segment, quantization bits;
+ * and complement the code word.
+ */
+ uval = (seg << 4) | ((pcm_val >> (seg + 3)) & 0x0f);
+ return uval ^ mask;
+}
+
+/*
+ * ulaw_to_s16() - Convert a u-law value to 16-bit linear PCM
+ *
+ * First, a biased linear code is derived from the code word. An unbiased
+ * output can then be obtained by subtracting 33 from the biased code.
+ *
+ * Note that this function expects to be passed the complement of the
+ * original code word. This is in keeping with ISDN conventions.
+ */
+static inline int ulaw_to_s16(unsigned char u_val)
+{
+ int t;
+
+ /* Complement to obtain normal u-law value. */
+ u_val = ~u_val;
+
+ /*
+ * Extract and bias the quantization bits. Then
+ * shift up by the segment number and subtract out the bias.
+ */
+ t = ((u_val & 0x0f) << 3) + 0x84;
+ t <<= (u_val & 0x70) >> 4;
+
+ return ((u_val & 0x80) ? (0x84 - t) : (t - 0x84));
+}
diff --git a/src/libosmo-legacy-mgcp/mgcp_common.c b/src/libosmo-legacy-mgcp/mgcp_common.c
new file mode 100644
index 0000000..444a060
--- /dev/null
+++ b/src/libosmo-legacy-mgcp/mgcp_common.c
@@ -0,0 +1,54 @@
+/* Media Gateway Control Protocol Media Gateway: RFC 3435 */
+/* Implementations useful both for the MGCP GW as well as MGCP GW clients */
+
+/*
+ * (C) 2016 by sysmocom s.m.f.c. GmbH <info@sysmocom.de>
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <errno.h>
+
+#include <osmocom/core/utils.h>
+#include <osmocom/legacy_mgcp/mgcp.h>
+
+const struct value_string mgcp_connection_mode_strs[] = {
+ { MGCP_CONN_NONE, "none" },
+ { MGCP_CONN_RECV_SEND, "sendrecv" },
+ { MGCP_CONN_SEND_ONLY, "sendonly" },
+ { MGCP_CONN_RECV_ONLY, "recvonly" },
+ { MGCP_CONN_LOOPBACK, "loopback" },
+ { 0, NULL }
+};
+
+/* Ensure that the msg->l2h is NUL terminated. */
+int mgcp_msg_terminate_nul(struct msgb *msg)
+{
+ unsigned char *tail = msg->l2h + msgb_l2len(msg); /* char after l2 data */
+ if (tail[-1] == '\0')
+ /* nothing to do */;
+ else if (msgb_tailroom(msg) > 0)
+ tail[0] = '\0';
+ else if (tail[-1] == '\r' || tail[-1] == '\n')
+ tail[-1] = '\0';
+ else {
+ LOGP(DLMGCP, LOGL_ERROR, "Cannot NUL terminate MGCP message: "
+ "Length: %d, Buffer size: %d\n",
+ msgb_l2len(msg), msg->data_len);
+ return -ENOTSUP;
+ }
+ return 0;
+}
diff --git a/src/libosmo-legacy-mgcp/mgcp_network.c b/src/libosmo-legacy-mgcp/mgcp_network.c
new file mode 100644
index 0000000..8ccfb42
--- /dev/null
+++ b/src/libosmo-legacy-mgcp/mgcp_network.c
@@ -0,0 +1,1166 @@
+/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
+/* The protocol implementation */
+
+/*
+ * (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2012 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <time.h>
+#include <limits.h>
+
+#include <sys/socket.h>
+#include <arpa/inet.h>
+
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/select.h>
+
+#include <osmocom/netif/rtp.h>
+
+#include <osmocom/legacy_mgcp/mgcp.h>
+#include <osmocom/legacy_mgcp/mgcp_internal.h>
+
+#include <osmocom/legacy_mgcp/osmux.h>
+
+#warning "Make use of the rtp proxy code"
+
+
+#define RTP_SEQ_MOD (1 << 16)
+#define RTP_MAX_DROPOUT 3000
+#define RTP_MAX_MISORDER 100
+#define RTP_BUF_SIZE 4096
+
+enum {
+ MGCP_PROTO_RTP,
+ MGCP_PROTO_RTCP,
+};
+
+/**
+ * This does not need to be a precision timestamp and
+ * is allowed to wrap quite fast. The returned value is
+ * 1/unit seconds.
+ */
+static uint32_t get_current_ts(unsigned unit)
+{
+ struct timespec tp;
+ uint64_t ret;
+
+ if (!unit)
+ return 0;
+
+ memset(&tp, 0, sizeof(tp));
+ if (clock_gettime(CLOCK_MONOTONIC, &tp) != 0)
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "Getting the clock failed.\n");
+
+ /* convert it to 1/unit seconds */
+ ret = tp.tv_sec;
+ ret *= unit;
+ ret += (int64_t)tp.tv_nsec * unit / 1000 / 1000 / 1000;
+
+ return ret;
+}
+
+int mgcp_udp_send(int fd, struct in_addr *addr, int port, char *buf, int len)
+{
+ struct sockaddr_in out;
+ out.sin_family = AF_INET;
+ out.sin_port = port;
+ memcpy(&out.sin_addr, addr, sizeof(*addr));
+
+ return sendto(fd, buf, len, 0, (struct sockaddr *)&out, sizeof(out));
+}
+
+int mgcp_send_dummy(struct mgcp_endpoint *endp)
+{
+ static char buf[] = { MGCP_DUMMY_LOAD };
+ int rc;
+ int was_rtcp = 0;
+
+ rc = mgcp_udp_send(endp->net_end.rtp.fd, &endp->net_end.addr,
+ endp->net_end.rtp_port, buf, 1);
+
+ if (rc == -1)
+ goto failed;
+
+ if (endp->tcfg->omit_rtcp)
+ return rc;
+
+ was_rtcp = 1;
+ rc = mgcp_udp_send(endp->net_end.rtcp.fd, &endp->net_end.addr,
+ endp->net_end.rtcp_port, buf, 1);
+
+ if (rc >= 0)
+ return rc;
+
+failed:
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Failed to send dummy %s packet: %s on: 0x%x to %s:%d\n",
+ was_rtcp ? "RTCP" : "RTP",
+ strerror(errno), ENDPOINT_NUMBER(endp), inet_ntoa(endp->net_end.addr),
+ was_rtcp ? endp->net_end.rtcp_port : endp->net_end.rtp_port);
+
+ return -1;
+}
+
+static int32_t compute_timestamp_aligment_error(struct mgcp_rtp_stream_state *sstate,
+ int ptime, uint32_t timestamp)
+{
+ int32_t timestamp_delta;
+
+ if (ptime == 0)
+ return 0;
+
+ /* Align according to: T - Tlast = k * Tptime */
+ timestamp_delta = timestamp - sstate->last_timestamp;
+
+ return timestamp_delta % ptime;
+}
+
+static int check_rtp_timestamp(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_state *state,
+ struct mgcp_rtp_stream_state *sstate,
+ struct mgcp_rtp_end *rtp_end,
+ struct sockaddr_in *addr,
+ uint16_t seq, uint32_t timestamp,
+ const char *text, int32_t *tsdelta_out)
+{
+ int32_t tsdelta;
+ int32_t timestamp_error;
+
+ /* Not fully intialized, skip */
+ if (sstate->last_tsdelta == 0 && timestamp == sstate->last_timestamp)
+ return 0;
+
+ if (seq == sstate->last_seq) {
+ if (timestamp != sstate->last_timestamp) {
+ sstate->err_ts_counter += 1;
+ LOGP(DLMGCP, LOGL_ERROR,
+ "The %s timestamp delta is != 0 but the sequence "
+ "number %d is the same, "
+ "TS offset: %d, SeqNo offset: %d "
+ "on 0x%x SSRC: %u timestamp: %u "
+ "from %s:%d in %d\n",
+ text, seq,
+ state->timestamp_offset, state->seq_offset,
+ ENDPOINT_NUMBER(endp), sstate->ssrc, timestamp,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port),
+ endp->conn_mode);
+ }
+ return 0;
+ }
+
+ tsdelta =
+ (int32_t)(timestamp - sstate->last_timestamp) /
+ (int16_t)(seq - sstate->last_seq);
+
+ if (tsdelta == 0) {
+ /* Don't update *tsdelta_out */
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "The %s timestamp delta is %d "
+ "on 0x%x SSRC: %u timestamp: %u "
+ "from %s:%d in %d\n",
+ text, tsdelta,
+ ENDPOINT_NUMBER(endp), sstate->ssrc, timestamp,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port),
+ endp->conn_mode);
+
+ return 0;
+ }
+
+ if (sstate->last_tsdelta != tsdelta) {
+ if (sstate->last_tsdelta) {
+ LOGP(DLMGCP, LOGL_INFO,
+ "The %s timestamp delta changes from %d to %d "
+ "on 0x%x SSRC: %u timestamp: %u from %s:%d in %d\n",
+ text, sstate->last_tsdelta, tsdelta,
+ ENDPOINT_NUMBER(endp), sstate->ssrc, timestamp,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port),
+ endp->conn_mode);
+ }
+ }
+
+ if (tsdelta_out)
+ *tsdelta_out = tsdelta;
+
+ timestamp_error =
+ compute_timestamp_aligment_error(sstate, state->packet_duration,
+ timestamp);
+
+ if (timestamp_error) {
+ sstate->err_ts_counter += 1;
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "The %s timestamp has an alignment error of %d "
+ "on 0x%x SSRC: %u "
+ "SeqNo delta: %d, TS delta: %d, dTS/dSeq: %d "
+ "from %s:%d in mode %d. ptime: %d\n",
+ text, timestamp_error,
+ ENDPOINT_NUMBER(endp), sstate->ssrc,
+ (int16_t)(seq - sstate->last_seq),
+ (int32_t)(timestamp - sstate->last_timestamp),
+ tsdelta,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port),
+ endp->conn_mode, state->packet_duration);
+ }
+ return 1;
+}
+
+/* Set the timestamp offset according to the packet duration. */
+static int adjust_rtp_timestamp_offset(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_state *state,
+ struct mgcp_rtp_end *rtp_end,
+ struct sockaddr_in *addr,
+ int16_t delta_seq, uint32_t in_timestamp)
+{
+ int32_t tsdelta = state->packet_duration;
+ int timestamp_offset;
+ uint32_t out_timestamp;
+
+ if (tsdelta == 0) {
+ tsdelta = state->out_stream.last_tsdelta;
+ if (tsdelta != 0) {
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "A fixed packet duration is not available on 0x%x, "
+ "using last output timestamp delta instead: %d "
+ "from %s:%d in %d\n",
+ ENDPOINT_NUMBER(endp), tsdelta,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port),
+ endp->conn_mode);
+ } else {
+ tsdelta = rtp_end->codec.rate * 20 / 1000;
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "Fixed packet duration and last timestamp delta "
+ "are not available on 0x%x, "
+ "using fixed 20ms instead: %d "
+ "from %s:%d in %d\n",
+ ENDPOINT_NUMBER(endp), tsdelta,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port),
+ endp->conn_mode);
+ }
+ }
+
+ out_timestamp = state->out_stream.last_timestamp + delta_seq * tsdelta;
+ timestamp_offset = out_timestamp - in_timestamp;
+
+ if (state->timestamp_offset != timestamp_offset) {
+ state->timestamp_offset = timestamp_offset;
+
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "Timestamp offset change on 0x%x SSRC: %u "
+ "SeqNo delta: %d, TS offset: %d, "
+ "from %s:%d in %d\n",
+ ENDPOINT_NUMBER(endp), state->in_stream.ssrc,
+ delta_seq, state->timestamp_offset,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port),
+ endp->conn_mode);
+ }
+
+ return timestamp_offset;
+}
+
+/* Set the timestamp offset according to the packet duration. */
+static int align_rtp_timestamp_offset(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_state *state,
+ struct mgcp_rtp_end *rtp_end,
+ struct sockaddr_in *addr,
+ uint32_t timestamp)
+{
+ int timestamp_error = 0;
+ int ptime = state->packet_duration;
+
+ /* Align according to: T + Toffs - Tlast = k * Tptime */
+
+ timestamp_error = compute_timestamp_aligment_error(
+ &state->out_stream, ptime,
+ timestamp + state->timestamp_offset);
+
+ if (timestamp_error) {
+ state->timestamp_offset += ptime - timestamp_error;
+
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "Corrected timestamp alignment error of %d on 0x%x SSRC: %u "
+ "new TS offset: %d, "
+ "from %s:%d in %d\n",
+ timestamp_error,
+ ENDPOINT_NUMBER(endp), state->in_stream.ssrc,
+ state->timestamp_offset, inet_ntoa(addr->sin_addr),
+ ntohs(addr->sin_port), endp->conn_mode);
+ }
+
+ OSMO_ASSERT(compute_timestamp_aligment_error(&state->out_stream, ptime,
+ timestamp + state->timestamp_offset) == 0);
+
+ return timestamp_error;
+}
+
+int mgcp_rtp_processing_default(struct mgcp_endpoint *endp, struct mgcp_rtp_end *dst_end,
+ char *data, int *len, int buf_size)
+{
+ return 0;
+}
+
+int mgcp_setup_rtp_processing_default(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_end *dst_end,
+ struct mgcp_rtp_end *src_end)
+{
+ return 0;
+}
+
+void mgcp_get_net_downlink_format_default(struct mgcp_endpoint *endp,
+ int *payload_type,
+ const char**audio_name,
+ const char**fmtp_extra)
+{
+ /* Use the BTS side parameters when passing the SDP data (for
+ * downlink) to the net peer.
+ */
+ *payload_type = endp->bts_end.codec.payload_type;
+ *audio_name = endp->bts_end.codec.audio_name;
+ *fmtp_extra = endp->bts_end.fmtp_extra;
+}
+
+
+void mgcp_rtp_annex_count(struct mgcp_endpoint *endp, struct mgcp_rtp_state *state,
+ const uint16_t seq, const int32_t transit,
+ const uint32_t ssrc)
+{
+ int32_t d;
+
+ /* initialize or re-initialize */
+ if (!state->stats_initialized || state->stats_ssrc != ssrc) {
+ state->stats_initialized = 1;
+ state->stats_base_seq = seq;
+ state->stats_max_seq = seq - 1;
+ state->stats_ssrc = ssrc;
+ state->stats_jitter = 0;
+ state->stats_transit = transit;
+ state->stats_cycles = 0;
+ } else {
+ uint16_t udelta;
+
+ /*
+ * The below takes the shape of the validation of
+ * Appendix A. Check if there is something weird with
+ * the sequence number, otherwise check for a wrap
+ * around in the sequence number.
+ * It can't wrap during the initialization so let's
+ * skip it here. The Appendix A probably doesn't have
+ * this issue because of the probation.
+ */
+ udelta = seq - state->stats_max_seq;
+ if (udelta < RTP_MAX_DROPOUT) {
+ if (seq < state->stats_max_seq)
+ state->stats_cycles += RTP_SEQ_MOD;
+ } else if (udelta <= RTP_SEQ_MOD - RTP_MAX_MISORDER) {
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "RTP seqno made a very large jump on 0x%x delta: %u\n",
+ ENDPOINT_NUMBER(endp), udelta);
+ }
+ }
+
+ /*
+ * Calculate the jitter between the two packages. The TS should be
+ * taken closer to the read function. This was taken from the
+ * Appendix A of RFC 3550. Timestamp and arrival_time have a 1/rate
+ * resolution.
+ */
+ d = transit - state->stats_transit;
+ state->stats_transit = transit;
+ if (d < 0)
+ d = -d;
+ state->stats_jitter += d - ((state->stats_jitter + 8) >> 4);
+ state->stats_max_seq = seq;
+}
+
+
+
+/**
+ * The RFC 3550 Appendix A assumes there are multiple sources but
+ * some of the supported endpoints (e.g. the nanoBTS) can only handle
+ * one source and this code will patch RTP header to appear as if there
+ * is only one source.
+ * There is also no probation period for new sources. Every RTP header
+ * we receive will be seen as a switch in streams.
+ */
+void mgcp_patch_and_count(struct mgcp_endpoint *endp, struct mgcp_rtp_state *state,
+ struct mgcp_rtp_end *rtp_end, struct sockaddr_in *addr,
+ char *data, int len)
+{
+ uint32_t arrival_time;
+ int32_t transit;
+ uint16_t seq;
+ uint32_t timestamp, ssrc;
+ struct rtp_hdr *rtp_hdr;
+ int payload = rtp_end->codec.payload_type;
+
+ if (len < sizeof(*rtp_hdr))
+ return;
+
+ rtp_hdr = (struct rtp_hdr *) data;
+ seq = ntohs(rtp_hdr->sequence);
+ timestamp = ntohl(rtp_hdr->timestamp);
+ arrival_time = get_current_ts(rtp_end->codec.rate);
+ ssrc = ntohl(rtp_hdr->ssrc);
+ transit = arrival_time - timestamp;
+
+ mgcp_rtp_annex_count(endp, state, seq, transit, ssrc);
+
+ if (!state->initialized) {
+ state->initialized = 1;
+ state->in_stream.last_seq = seq - 1;
+ state->in_stream.ssrc = state->orig_ssrc = ssrc;
+ state->in_stream.last_tsdelta = 0;
+ state->packet_duration = mgcp_rtp_packet_duration(endp, rtp_end);
+ state->out_stream = state->in_stream;
+ state->out_stream.last_timestamp = timestamp;
+ state->out_stream.ssrc = ssrc - 1; /* force output SSRC change */
+ LOGP(DLMGCP, LOGL_INFO,
+ "Initializing stream on 0x%x SSRC: %u timestamp: %u "
+ "pkt-duration: %d, from %s:%d in %d\n",
+ ENDPOINT_NUMBER(endp), state->in_stream.ssrc,
+ state->seq_offset, state->packet_duration,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port),
+ endp->conn_mode);
+ if (state->packet_duration == 0) {
+ state->packet_duration = rtp_end->codec.rate * 20 / 1000;
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "Fixed packet duration is not available on 0x%x, "
+ "using fixed 20ms instead: %d from %s:%d in %d\n",
+ ENDPOINT_NUMBER(endp), state->packet_duration,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port),
+ endp->conn_mode);
+ }
+ } else if (state->in_stream.ssrc != ssrc) {
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "The SSRC changed on 0x%x: %u -> %u "
+ "from %s:%d in %d\n",
+ ENDPOINT_NUMBER(endp),
+ state->in_stream.ssrc, rtp_hdr->ssrc,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port),
+ endp->conn_mode);
+
+ state->in_stream.ssrc = ssrc;
+ if (rtp_end->force_constant_ssrc) {
+ int16_t delta_seq;
+
+ /* Always increment seqno by 1 */
+ state->seq_offset =
+ (state->out_stream.last_seq + 1) - seq;
+
+ /* Estimate number of packets that would have been sent */
+ delta_seq =
+ (arrival_time - state->in_stream.last_arrival_time
+ + state->packet_duration/2) /
+ state->packet_duration;
+
+ adjust_rtp_timestamp_offset(endp, state, rtp_end, addr,
+ delta_seq, timestamp);
+
+ state->patch_ssrc = 1;
+ ssrc = state->orig_ssrc;
+ if (rtp_end->force_constant_ssrc != -1)
+ rtp_end->force_constant_ssrc -= 1;
+
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "SSRC patching enabled on 0x%x SSRC: %u "
+ "SeqNo offset: %d, TS offset: %d "
+ "from %s:%d in %d\n",
+ ENDPOINT_NUMBER(endp), state->in_stream.ssrc,
+ state->seq_offset, state->timestamp_offset,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port),
+ endp->conn_mode);
+ }
+
+ state->in_stream.last_tsdelta = 0;
+ } else {
+ /* Compute current per-packet timestamp delta */
+ check_rtp_timestamp(endp, state, &state->in_stream, rtp_end, addr,
+ seq, timestamp, "input",
+ &state->in_stream.last_tsdelta);
+
+ if (state->patch_ssrc)
+ ssrc = state->orig_ssrc;
+ }
+
+ /* Save before patching */
+ state->in_stream.last_timestamp = timestamp;
+ state->in_stream.last_seq = seq;
+ state->in_stream.last_arrival_time = arrival_time;
+
+ if (rtp_end->force_aligned_timing &&
+ state->out_stream.ssrc == ssrc && state->packet_duration)
+ /* Align the timestamp offset */
+ align_rtp_timestamp_offset(endp, state, rtp_end, addr, timestamp);
+
+ /* Store the updated SSRC back to the packet */
+ if (state->patch_ssrc)
+ rtp_hdr->ssrc = htonl(ssrc);
+
+ /* Apply the offset and store it back to the packet.
+ * This won't change anything if the offset is 0, so the conditional is
+ * omitted. */
+ seq += state->seq_offset;
+ rtp_hdr->sequence = htons(seq);
+ timestamp += state->timestamp_offset;
+ rtp_hdr->timestamp = htonl(timestamp);
+
+ /* Check again, whether the timestamps are still valid */
+ if (state->out_stream.ssrc == ssrc)
+ check_rtp_timestamp(endp, state, &state->out_stream, rtp_end,
+ addr, seq, timestamp, "output",
+ &state->out_stream.last_tsdelta);
+
+ /* Save output values */
+ state->out_stream.last_seq = seq;
+ state->out_stream.last_timestamp = timestamp;
+ state->out_stream.ssrc = ssrc;
+
+ if (payload < 0)
+ return;
+
+#if 0
+ DEBUGP(DLMGCP, "Payload hdr payload %u -> endp payload %u\n",
+ rtp_hdr->payload_type, payload);
+ rtp_hdr->payload_type = payload;
+#endif
+}
+
+/*
+ * The below code is for dispatching. We have a dedicated port for
+ * the data coming from the net and one to discover the BTS.
+ */
+static int forward_data(int fd, struct mgcp_rtp_tap *tap, const char *buf, int len)
+{
+ if (!tap->enabled)
+ return 0;
+
+ return sendto(fd, buf, len, 0,
+ (struct sockaddr *)&tap->forward, sizeof(tap->forward));
+}
+
+static int mgcp_send_transcoder(struct mgcp_rtp_end *end,
+ struct mgcp_config *cfg, int is_rtp,
+ const char *buf, int len)
+{
+ int rc;
+ int port;
+ struct sockaddr_in addr;
+
+ port = is_rtp ? end->rtp_port : end->rtcp_port;
+
+ addr.sin_family = AF_INET;
+ addr.sin_addr = cfg->transcoder_in;
+ addr.sin_port = port;
+
+ rc = sendto(is_rtp ?
+ end->rtp.fd :
+ end->rtcp.fd, buf, len, 0,
+ (struct sockaddr *) &addr, sizeof(addr));
+
+ if (rc != len)
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Failed to send data to the transcoder: %s\n",
+ strerror(errno));
+
+ return rc;
+}
+
+int mgcp_send(struct mgcp_endpoint *endp, int dest, int is_rtp,
+ struct sockaddr_in *addr, char *buf, int rc)
+{
+ struct mgcp_trunk_config *tcfg = endp->tcfg;
+ struct mgcp_rtp_end *rtp_end;
+ struct mgcp_rtp_state *rtp_state;
+ int tap_idx;
+
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "endpoint %x dest %s tcfg->audio_loop %d endp->conn_mode %d (== loopback: %d)\n",
+ ENDPOINT_NUMBER(endp),
+ dest == MGCP_DEST_NET? "net" : "bts",
+ tcfg->audio_loop,
+ endp->conn_mode,
+ endp->conn_mode == MGCP_CONN_LOOPBACK);
+
+ /* For loop toggle the destination and then dispatch. */
+ if (tcfg->audio_loop)
+ dest = !dest;
+
+ /* Loop based on the conn_mode, maybe undoing the above */
+ if (endp->conn_mode == MGCP_CONN_LOOPBACK)
+ dest = !dest;
+
+ if (dest == MGCP_DEST_NET) {
+ rtp_end = &endp->net_end;
+ rtp_state = &endp->bts_state;
+ tap_idx = MGCP_TAP_NET_OUT;
+ } else {
+ rtp_end = &endp->bts_end;
+ rtp_state = &endp->net_state;
+ tap_idx = MGCP_TAP_BTS_OUT;
+ }
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "endpoint %x dest %s net_end %s %d %d bts_end %s %d %d rtp_end %s %d %d\n",
+ ENDPOINT_NUMBER(endp),
+ dest == MGCP_DEST_NET? "net" : "bts",
+
+ inet_ntoa(endp->net_end.addr),
+ ntohs(endp->net_end.rtp_port),
+ ntohs(endp->net_end.rtcp_port),
+
+ inet_ntoa(endp->bts_end.addr),
+ ntohs(endp->bts_end.rtp_port),
+ ntohs(endp->bts_end.rtcp_port),
+
+ inet_ntoa(rtp_end->addr),
+ ntohs(rtp_end->rtp_port),
+ ntohs(rtp_end->rtcp_port)
+ );
+
+ if (!rtp_end->output_enabled) {
+ rtp_end->dropped_packets += 1;
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "endpoint %x output disabled, drop to %s %s %d %d\n",
+ ENDPOINT_NUMBER(endp),
+ dest == MGCP_DEST_NET? "net" : "bts",
+ inet_ntoa(rtp_end->addr),
+ ntohs(rtp_end->rtp_port),
+ ntohs(rtp_end->rtcp_port)
+ );
+ } else if (is_rtp) {
+ int cont;
+ int nbytes = 0;
+ int len = rc;
+ do {
+ cont = endp->cfg->rtp_processing_cb(endp, rtp_end,
+ buf, &len, RTP_BUF_SIZE);
+ if (cont < 0)
+ break;
+
+ mgcp_patch_and_count(endp, rtp_state, rtp_end, addr, buf, len);
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "endpoint %x process/send to %s %s %d %d\n",
+ ENDPOINT_NUMBER(endp),
+ (dest == MGCP_DEST_NET)? "net" : "bts",
+ inet_ntoa(rtp_end->addr),
+ ntohs(rtp_end->rtp_port),
+ ntohs(rtp_end->rtcp_port)
+ );
+ forward_data(rtp_end->rtp.fd, &endp->taps[tap_idx],
+ buf, len);
+
+ /* FIXME: HACK HACK HACK. See OS#2459.
+ * The ip.access nano3G needs the first RTP payload's first two bytes to read hex
+ * 'e400', or it will reject the RAB assignment. It seems to not harm other femto
+ * cells (as long as we patch only the first RTP payload in each stream).
+ */
+ if (tap_idx == MGCP_TAP_BTS_OUT
+ && !rtp_state->patched_first_rtp_payload) {
+ uint8_t *data = (uint8_t*)&buf[12];
+ data[0] = 0xe4;
+ data[1] = 0x00;
+ rtp_state->patched_first_rtp_payload = true;
+ }
+
+ rc = mgcp_udp_send(rtp_end->rtp.fd,
+ &rtp_end->addr,
+ rtp_end->rtp_port, buf, len);
+
+ if (rc <= 0)
+ return rc;
+ nbytes += rc;
+ len = cont;
+ } while (len > 0);
+ return nbytes;
+ } else if (!tcfg->omit_rtcp) {
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "endpoint %x send to %s %s %d %d\n",
+ ENDPOINT_NUMBER(endp),
+ dest == MGCP_DEST_NET? "net" : "bts",
+ inet_ntoa(rtp_end->addr),
+ ntohs(rtp_end->rtp_port),
+ ntohs(rtp_end->rtcp_port)
+ );
+
+ return mgcp_udp_send(rtp_end->rtcp.fd,
+ &rtp_end->addr,
+ rtp_end->rtcp_port, buf, rc);
+ }
+
+ return 0;
+}
+
+static int receive_from(struct mgcp_endpoint *endp, int fd, struct sockaddr_in *addr,
+ char *buf, int bufsize)
+{
+ int rc;
+ socklen_t slen = sizeof(*addr);
+
+ rc = recvfrom(fd, buf, bufsize, 0,
+ (struct sockaddr *) addr, &slen);
+ if (rc < 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to receive message on: 0x%x errno: %d/%s\n",
+ ENDPOINT_NUMBER(endp), errno, strerror(errno));
+ return -1;
+ }
+
+ /* do not forward aynthing... maybe there is a packet from the bts */
+ if (!endp->allocated)
+ return -1;
+
+ #warning "Slight spec violation. With connection mode recvonly we should attempt to forward."
+
+ return rc;
+}
+
+static int rtp_data_net(struct osmo_fd *fd, unsigned int what)
+{
+ char buf[RTP_BUF_SIZE];
+ struct sockaddr_in addr;
+ struct mgcp_endpoint *endp;
+ int rc, proto;
+
+ endp = (struct mgcp_endpoint *) fd->data;
+
+ rc = receive_from(endp, fd->fd, &addr, buf, sizeof(buf));
+ if (rc <= 0)
+ return -1;
+
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "endpoint %x",
+ ENDPOINT_NUMBER(endp));
+ LOGPC(DLMGCP, LOGL_DEBUG,
+ " from net %s %d",
+ inet_ntoa(addr.sin_addr),
+ ntohs(addr.sin_port));
+ LOGPC(DLMGCP, LOGL_DEBUG,
+ " net_end %s %d %d",
+ inet_ntoa(endp->net_end.addr),
+ ntohs(endp->net_end.rtp_port),
+ ntohs(endp->net_end.rtcp_port));
+ LOGPC(DLMGCP, LOGL_DEBUG,
+ " bts_end %s %d %d\n",
+ inet_ntoa(endp->bts_end.addr),
+ ntohs(endp->bts_end.rtp_port),
+ ntohs(endp->bts_end.rtcp_port)
+ );
+
+ if (memcmp(&addr.sin_addr, &endp->net_end.addr, sizeof(addr.sin_addr)) != 0) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "rtp_data_net: Endpoint 0x%x data from wrong address %s vs. ",
+ ENDPOINT_NUMBER(endp), inet_ntoa(addr.sin_addr));
+ LOGPC(DLMGCP, LOGL_ERROR,
+ "%s\n", inet_ntoa(endp->net_end.addr));
+ return -1;
+ }
+
+ switch(endp->type) {
+ case MGCP_RTP_DEFAULT:
+ case MGCP_RTP_TRANSCODED:
+ if (endp->net_end.rtp_port != addr.sin_port &&
+ endp->net_end.rtcp_port != addr.sin_port) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "rtp_data_net: Data from wrong source port %d on 0x%x\n",
+ ntohs(addr.sin_port), ENDPOINT_NUMBER(endp));
+ return -1;
+ }
+ break;
+ case MGCP_OSMUX_BSC:
+ case MGCP_OSMUX_BSC_NAT:
+ break;
+ }
+
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "rtp_data_net: Endpoint %x data from %s %d\n",
+ ENDPOINT_NUMBER(endp),
+ inet_ntoa(addr.sin_addr),
+ ntohs(addr.sin_port));
+
+ /* throw away the dummy message */
+ if (rc == 1 && buf[0] == MGCP_DUMMY_LOAD) {
+ LOGP(DLMGCP, LOGL_NOTICE, "Filtered dummy from network on 0x%x\n",
+ ENDPOINT_NUMBER(endp));
+ return 0;
+ }
+
+ proto = fd == &endp->net_end.rtp ? MGCP_PROTO_RTP : MGCP_PROTO_RTCP;
+ endp->net_end.packets += 1;
+ endp->net_end.octets += rc;
+
+ forward_data(fd->fd, &endp->taps[MGCP_TAP_NET_IN], buf, rc);
+
+ switch (endp->type) {
+ case MGCP_RTP_DEFAULT:
+ return mgcp_send(endp, MGCP_DEST_BTS, proto == MGCP_PROTO_RTP,
+ &addr, buf, rc);
+ case MGCP_RTP_TRANSCODED:
+ return mgcp_send_transcoder(&endp->trans_net, endp->cfg,
+ proto == MGCP_PROTO_RTP, buf, rc);
+ case MGCP_OSMUX_BSC_NAT:
+ return osmux_xfrm_to_osmux(MGCP_DEST_BTS, buf, rc, endp);
+ case MGCP_OSMUX_BSC: /* Should not happen */
+ break;
+ }
+
+ LOGP(DLMGCP, LOGL_ERROR, "Bad MGCP type %u on endpoint %u\n",
+ endp->type, ENDPOINT_NUMBER(endp));
+ return 0;
+}
+
+static void discover_bts(struct mgcp_endpoint *endp, int proto, struct sockaddr_in *addr)
+{
+ struct mgcp_config *cfg = endp->cfg;
+
+ if (proto == MGCP_PROTO_RTP && endp->bts_end.rtp_port == 0) {
+ if (!cfg->bts_ip ||
+ memcmp(&addr->sin_addr,
+ &cfg->bts_in, sizeof(cfg->bts_in)) == 0 ||
+ memcmp(&addr->sin_addr,
+ &endp->bts_end.addr, sizeof(endp->bts_end.addr)) == 0) {
+
+ endp->bts_end.rtp_port = addr->sin_port;
+ endp->bts_end.addr = addr->sin_addr;
+
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "Found BTS for endpoint: 0x%x on port: %d/%d of %s\n",
+ ENDPOINT_NUMBER(endp), ntohs(endp->bts_end.rtp_port),
+ ntohs(endp->bts_end.rtcp_port), inet_ntoa(addr->sin_addr));
+ }
+ } else if (proto == MGCP_PROTO_RTCP && endp->bts_end.rtcp_port == 0) {
+ if (memcmp(&endp->bts_end.addr, &addr->sin_addr,
+ sizeof(endp->bts_end.addr)) == 0) {
+ endp->bts_end.rtcp_port = addr->sin_port;
+ }
+ }
+}
+
+static int rtp_data_bts(struct osmo_fd *fd, unsigned int what)
+{
+ char buf[RTP_BUF_SIZE];
+ struct sockaddr_in addr;
+ struct mgcp_endpoint *endp;
+ int rc, proto;
+
+ endp = (struct mgcp_endpoint *) fd->data;
+
+ rc = receive_from(endp, fd->fd, &addr, buf, sizeof(buf));
+ if (rc <= 0)
+ return -1;
+
+ proto = fd == &endp->bts_end.rtp ? MGCP_PROTO_RTP : MGCP_PROTO_RTCP;
+
+ /* We have no idea who called us, maybe it is the BTS. */
+ /* it was the BTS... */
+ discover_bts(endp, proto, &addr);
+
+ if (memcmp(&endp->bts_end.addr, &addr.sin_addr, sizeof(addr.sin_addr)) != 0) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "rtp_data_bts: Data from wrong bts %s on 0x%x\n",
+ inet_ntoa(addr.sin_addr), ENDPOINT_NUMBER(endp));
+ return -1;
+ }
+
+ if (endp->bts_end.rtp_port != addr.sin_port &&
+ endp->bts_end.rtcp_port != addr.sin_port) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "rtp_data_bts: ata from wrong bts source port %d on 0x%x\n",
+ ntohs(addr.sin_port), ENDPOINT_NUMBER(endp));
+ return -1;
+ }
+
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "rtp_data_bts: Endpoint %x data from %s %d\n",
+ ENDPOINT_NUMBER(endp),
+ inet_ntoa(addr.sin_addr),
+ ntohs(addr.sin_port));
+
+ /* throw away the dummy message */
+ if (rc == 1 && buf[0] == MGCP_DUMMY_LOAD) {
+ LOGP(DLMGCP, LOGL_NOTICE, "Filtered dummy from bts on 0x%x\n",
+ ENDPOINT_NUMBER(endp));
+ return 0;
+ }
+
+ /* do this before the loop handling */
+ endp->bts_end.packets += 1;
+ endp->bts_end.octets += rc;
+
+ forward_data(fd->fd, &endp->taps[MGCP_TAP_BTS_IN], buf, rc);
+
+ switch (endp->type) {
+ case MGCP_RTP_DEFAULT:
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "rtp_data_bts: Endpoint %x MGCP_RTP_DEFAULT\n",
+ ENDPOINT_NUMBER(endp));
+ return mgcp_send(endp, MGCP_DEST_NET, proto == MGCP_PROTO_RTP,
+ &addr, buf, rc);
+ case MGCP_RTP_TRANSCODED:
+ return mgcp_send_transcoder(&endp->trans_bts, endp->cfg,
+ proto == MGCP_PROTO_RTP, buf, rc);
+ case MGCP_OSMUX_BSC:
+ /* OSMUX translation: BTS -> BSC */
+ return osmux_xfrm_to_osmux(MGCP_DEST_NET, buf, rc, endp);
+ case MGCP_OSMUX_BSC_NAT:
+ break; /* Should not happen */
+ }
+
+ LOGP(DLMGCP, LOGL_ERROR, "Bad MGCP type %u on endpoint %u\n",
+ endp->type, ENDPOINT_NUMBER(endp));
+ return 0;
+}
+
+static int rtp_data_transcoder(struct mgcp_rtp_end *end, struct mgcp_endpoint *_endp,
+ int dest, struct osmo_fd *fd)
+{
+ char buf[RTP_BUF_SIZE];
+ struct sockaddr_in addr;
+ struct mgcp_config *cfg;
+ int rc, proto;
+
+ cfg = _endp->cfg;
+ rc = receive_from(_endp, fd->fd, &addr, buf, sizeof(buf));
+ if (rc <= 0)
+ return -1;
+
+ proto = fd == &end->rtp ? MGCP_PROTO_RTP : MGCP_PROTO_RTCP;
+
+ if (memcmp(&addr.sin_addr, &cfg->transcoder_in, sizeof(addr.sin_addr)) != 0) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Data not coming from transcoder dest: %d %s on 0x%x\n",
+ dest, inet_ntoa(addr.sin_addr), ENDPOINT_NUMBER(_endp));
+ return -1;
+ }
+
+ if (end->rtp_port != addr.sin_port &&
+ end->rtcp_port != addr.sin_port) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Data from wrong transcoder dest %d source port %d on 0x%x\n",
+ dest, ntohs(addr.sin_port), ENDPOINT_NUMBER(_endp));
+ return -1;
+ }
+
+ /* throw away the dummy message */
+ if (rc == 1 && buf[0] == MGCP_DUMMY_LOAD) {
+ LOGP(DLMGCP, LOGL_NOTICE, "Filtered dummy from transcoder dest %d on 0x%x\n",
+ dest, ENDPOINT_NUMBER(_endp));
+ return 0;
+ }
+
+ end->packets += 1;
+ return mgcp_send(_endp, dest, proto == MGCP_PROTO_RTP, &addr, buf, rc);
+}
+
+static int rtp_data_trans_net(struct osmo_fd *fd, unsigned int what)
+{
+ struct mgcp_endpoint *endp;
+ endp = (struct mgcp_endpoint *) fd->data;
+
+ return rtp_data_transcoder(&endp->trans_net, endp, MGCP_DEST_NET, fd);
+}
+
+static int rtp_data_trans_bts(struct osmo_fd *fd, unsigned int what)
+{
+ struct mgcp_endpoint *endp;
+ endp = (struct mgcp_endpoint *) fd->data;
+
+ return rtp_data_transcoder(&endp->trans_bts, endp, MGCP_DEST_BTS, fd);
+}
+
+int mgcp_create_bind(const char *source_addr, struct osmo_fd *fd, int port)
+{
+ struct sockaddr_in addr;
+ int on = 1;
+
+ fd->fd = socket(AF_INET, SOCK_DGRAM, 0);
+ if (fd->fd < 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to create UDP port.\n");
+ return -1;
+ }
+
+ setsockopt(fd->fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+ memset(&addr, 0, sizeof(addr));
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons(port);
+ inet_aton(source_addr, &addr.sin_addr);
+
+ if (bind(fd->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ close(fd->fd);
+ fd->fd = -1;
+ return -1;
+ }
+
+ return 0;
+}
+
+int mgcp_set_ip_tos(int fd, int tos)
+{
+ int ret;
+ ret = setsockopt(fd, IPPROTO_IP, IP_TOS,
+ &tos, sizeof(tos));
+ return ret != 0;
+}
+
+static int bind_rtp(struct mgcp_config *cfg, const char *source_addr,
+ struct mgcp_rtp_end *rtp_end, int endpno)
+{
+ if (mgcp_create_bind(source_addr, &rtp_end->rtp,
+ rtp_end->local_port) != 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to create RTP port: %s:%d on 0x%x\n",
+ source_addr, rtp_end->local_port, endpno);
+ goto cleanup0;
+ }
+
+ if (mgcp_create_bind(source_addr, &rtp_end->rtcp,
+ rtp_end->local_port + 1) != 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to create RTCP port: %s:%d on 0x%x\n",
+ source_addr, rtp_end->local_port + 1, endpno);
+ goto cleanup1;
+ }
+
+ mgcp_set_ip_tos(rtp_end->rtp.fd, cfg->endp_dscp);
+ mgcp_set_ip_tos(rtp_end->rtcp.fd, cfg->endp_dscp);
+
+ rtp_end->rtp.when = BSC_FD_READ;
+ if (osmo_fd_register(&rtp_end->rtp) != 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to register RTP port %d on 0x%x\n",
+ rtp_end->local_port, endpno);
+ goto cleanup2;
+ }
+
+ rtp_end->rtcp.when = BSC_FD_READ;
+ if (osmo_fd_register(&rtp_end->rtcp) != 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to register RTCP port %d on 0x%x\n",
+ rtp_end->local_port + 1, endpno);
+ goto cleanup3;
+ }
+
+ return 0;
+
+cleanup3:
+ osmo_fd_unregister(&rtp_end->rtp);
+cleanup2:
+ close(rtp_end->rtcp.fd);
+ rtp_end->rtcp.fd = -1;
+cleanup1:
+ close(rtp_end->rtp.fd);
+ rtp_end->rtp.fd = -1;
+cleanup0:
+ return -1;
+}
+
+static int int_bind(const char *port,
+ struct mgcp_rtp_end *end, int (*cb)(struct osmo_fd *, unsigned),
+ struct mgcp_endpoint *_endp,
+ const char *source_addr, int rtp_port)
+{
+ if (end->rtp.fd != -1 || end->rtcp.fd != -1) {
+ LOGP(DLMGCP, LOGL_ERROR, "Previous %s was still bound on %d\n",
+ port, ENDPOINT_NUMBER(_endp));
+ mgcp_free_rtp_port(end);
+ }
+
+ end->local_port = rtp_port;
+ end->rtp.cb = cb;
+ end->rtp.data = _endp;
+ end->rtcp.data = _endp;
+ end->rtcp.cb = cb;
+ return bind_rtp(_endp->cfg, source_addr, end, ENDPOINT_NUMBER(_endp));
+}
+
+int mgcp_bind_bts_rtp_port(struct mgcp_endpoint *endp, int rtp_port)
+{
+ return int_bind("bts-port", &endp->bts_end,
+ rtp_data_bts, endp,
+ mgcp_bts_src_addr(endp), rtp_port);
+}
+
+int mgcp_bind_net_rtp_port(struct mgcp_endpoint *endp, int rtp_port)
+{
+ return int_bind("net-port", &endp->net_end,
+ rtp_data_net, endp,
+ mgcp_net_src_addr(endp), rtp_port);
+}
+
+int mgcp_bind_trans_net_rtp_port(struct mgcp_endpoint *endp, int rtp_port)
+{
+ return int_bind("trans-net", &endp->trans_net,
+ rtp_data_trans_net, endp,
+ endp->cfg->source_addr, rtp_port);
+}
+
+int mgcp_bind_trans_bts_rtp_port(struct mgcp_endpoint *endp, int rtp_port)
+{
+ return int_bind("trans-bts", &endp->trans_bts,
+ rtp_data_trans_bts, endp,
+ endp->cfg->source_addr, rtp_port);
+}
+
+int mgcp_free_rtp_port(struct mgcp_rtp_end *end)
+{
+ if (end->rtp.fd != -1) {
+ close(end->rtp.fd);
+ end->rtp.fd = -1;
+ osmo_fd_unregister(&end->rtp);
+ }
+
+ if (end->rtcp.fd != -1) {
+ close(end->rtcp.fd);
+ end->rtcp.fd = -1;
+ osmo_fd_unregister(&end->rtcp);
+ }
+
+ return 0;
+}
+
+
+void mgcp_state_calc_loss(struct mgcp_rtp_state *state,
+ struct mgcp_rtp_end *end, uint32_t *expected,
+ int *loss)
+{
+ *expected = state->stats_cycles + state->stats_max_seq;
+ *expected = *expected - state->stats_base_seq + 1;
+
+ if (!state->stats_initialized) {
+ *expected = 0;
+ *loss = 0;
+ return;
+ }
+
+ /*
+ * Make sure the sign is correct and use the biggest
+ * positive/negative number that fits.
+ */
+ *loss = *expected - end->packets;
+ if (*expected < end->packets) {
+ if (*loss > 0)
+ *loss = INT_MIN;
+ } else {
+ if (*loss < 0)
+ *loss = INT_MAX;
+ }
+}
+
+uint32_t mgcp_state_calc_jitter(struct mgcp_rtp_state *state)
+{
+ if (!state->stats_initialized)
+ return 0;
+ return state->stats_jitter >> 4;
+}
diff --git a/src/libosmo-legacy-mgcp/mgcp_osmux.c b/src/libosmo-legacy-mgcp/mgcp_osmux.c
new file mode 100644
index 0000000..743d3f9
--- /dev/null
+++ b/src/libosmo-legacy-mgcp/mgcp_osmux.c
@@ -0,0 +1,583 @@
+/*
+ * (C) 2012-2013 by Pablo Neira Ayuso <pablo@gnumonks.org>
+ * (C) 2012-2013 by On Waves ehf <http://www.on-waves.com>
+ * All rights not specifically granted under this license are reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Affero General Public License as published by the
+ * Free Software Foundation; either version 3 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <stdio.h> /* for printf */
+#include <string.h> /* for memcpy */
+#include <stdlib.h> /* for abs */
+#include <inttypes.h> /* for PRIu64 */
+#include <netinet/in.h>
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/talloc.h>
+
+#include <osmocom/netif/osmux.h>
+#include <osmocom/netif/rtp.h>
+
+#include <osmocom/legacy_mgcp/mgcp.h>
+#include <osmocom/legacy_mgcp/mgcp_internal.h>
+#include <osmocom/legacy_mgcp/osmux.h>
+
+static struct osmo_fd osmux_fd;
+
+static LLIST_HEAD(osmux_handle_list);
+
+struct osmux_handle {
+ struct llist_head head;
+ struct osmux_in_handle *in;
+ struct in_addr rem_addr;
+ int rem_port;
+ int refcnt;
+};
+
+static void *osmux;
+
+static void osmux_deliver(struct msgb *batch_msg, void *data)
+{
+ struct osmux_handle *handle = data;
+ struct sockaddr_in out = {
+ .sin_family = AF_INET,
+ .sin_port = handle->rem_port,
+ };
+
+ memcpy(&out.sin_addr, &handle->rem_addr, sizeof(handle->rem_addr));
+ sendto(osmux_fd.fd, batch_msg->data, batch_msg->len, 0,
+ (struct sockaddr *)&out, sizeof(out));
+ msgb_free(batch_msg);
+}
+
+static struct osmux_handle *
+osmux_handle_find_get(struct in_addr *addr, int rem_port)
+{
+ struct osmux_handle *h;
+
+ /* Lookup for existing OSMUX handle for this destination address. */
+ llist_for_each_entry(h, &osmux_handle_list, head) {
+ if (memcmp(&h->rem_addr, addr, sizeof(struct in_addr)) == 0 &&
+ h->rem_port == rem_port) {
+ LOGP(DLMGCP, LOGL_DEBUG, "using existing OSMUX handle "
+ "for addr=%s:%d\n",
+ inet_ntoa(*addr), ntohs(rem_port));
+ h->refcnt++;
+ return h;
+ }
+ }
+
+ return NULL;
+}
+
+static void osmux_handle_put(struct osmux_in_handle *in)
+{
+ struct osmux_handle *h;
+
+ /* Lookup for existing OSMUX handle for this destination address. */
+ llist_for_each_entry(h, &osmux_handle_list, head) {
+ if (h->in == in) {
+ if (--h->refcnt == 0) {
+ LOGP(DLMGCP, LOGL_INFO,
+ "Releasing unused osmux handle for %s:%d\n",
+ inet_ntoa(h->rem_addr),
+ ntohs(h->rem_port));
+ LOGP(DLMGCP, LOGL_INFO, "Stats: "
+ "input RTP msgs: %u bytes: %"PRIu64" "
+ "output osmux msgs: %u bytes: %"PRIu64"\n",
+ in->stats.input_rtp_msgs,
+ in->stats.input_rtp_bytes,
+ in->stats.output_osmux_msgs,
+ in->stats.output_osmux_bytes);
+ llist_del(&h->head);
+ osmux_xfrm_input_fini(h->in);
+ talloc_free(h);
+ }
+ return;
+ }
+ }
+ LOGP(DLMGCP, LOGL_ERROR, "cannot find Osmux input handle %p\n", in);
+}
+
+static struct osmux_handle *
+osmux_handle_alloc(struct mgcp_config *cfg, struct in_addr *addr, int rem_port)
+{
+ struct osmux_handle *h;
+
+ h = talloc_zero(osmux, struct osmux_handle);
+ if (!h)
+ return NULL;
+ h->rem_addr = *addr;
+ h->rem_port = rem_port;
+ h->refcnt++;
+
+ h->in = talloc_zero(h, struct osmux_in_handle);
+ if (!h->in) {
+ talloc_free(h);
+ return NULL;
+ }
+
+ h->in->osmux_seq = 0; /* sequence number to start OSmux message from */
+ h->in->batch_factor = cfg->osmux_batch;
+ /* If batch size is zero, the library defaults to 1470 bytes. */
+ h->in->batch_size = cfg->osmux_batch_size;
+ h->in->deliver = osmux_deliver;
+ osmux_xfrm_input_init(h->in);
+ h->in->data = h;
+
+ llist_add(&h->head, &osmux_handle_list);
+
+ LOGP(DLMGCP, LOGL_DEBUG, "created new OSMUX handle for addr=%s:%d\n",
+ inet_ntoa(*addr), ntohs(rem_port));
+
+ return h;
+}
+
+static struct osmux_in_handle *
+osmux_handle_lookup(struct mgcp_config *cfg, struct in_addr *addr, int rem_port)
+{
+ struct osmux_handle *h;
+
+ h = osmux_handle_find_get(addr, rem_port);
+ if (h != NULL)
+ return h->in;
+
+ h = osmux_handle_alloc(cfg, addr, rem_port);
+ if (h == NULL)
+ return NULL;
+
+ return h->in;
+}
+
+int osmux_xfrm_to_osmux(int type, char *buf, int rc, struct mgcp_endpoint *endp)
+{
+ int ret;
+ struct msgb *msg;
+
+ msg = msgb_alloc(4096, "RTP");
+ if (!msg)
+ return 0;
+
+ memcpy(msg->data, buf, rc);
+ msgb_put(msg, rc);
+
+ while ((ret = osmux_xfrm_input(endp->osmux.in, msg, endp->osmux.cid)) > 0) {
+ /* batch full, build and deliver it */
+ osmux_xfrm_input_deliver(endp->osmux.in);
+ }
+ return 0;
+}
+
+static struct mgcp_endpoint *
+endpoint_lookup(struct mgcp_config *cfg, int cid,
+ struct in_addr *from_addr, int type)
+{
+ struct mgcp_endpoint *tmp = NULL;
+ int i;
+
+ /* Lookup for the endpoint that corresponds to this port */
+ for (i=0; i<cfg->trunk.number_endpoints; i++) {
+ struct in_addr *this;
+
+ tmp = &cfg->trunk.endpoints[i];
+
+ if (!tmp->allocated)
+ continue;
+
+ switch(type) {
+ case MGCP_DEST_NET:
+ this = &tmp->net_end.addr;
+ break;
+ case MGCP_DEST_BTS:
+ this = &tmp->bts_end.addr;
+ break;
+ default:
+ /* Should not ever happen */
+ LOGP(DLMGCP, LOGL_ERROR, "Bad type %d. Fix your code.\n", type);
+ return NULL;
+ }
+
+ if (tmp->osmux.cid == cid && this->s_addr == from_addr->s_addr)
+ return tmp;
+ }
+
+ LOGP(DLMGCP, LOGL_ERROR, "Cannot find endpoint with cid=%d\n", cid);
+
+ return NULL;
+}
+
+static void scheduled_tx_net_cb(struct msgb *msg, void *data)
+{
+ struct mgcp_endpoint *endp = data;
+ struct sockaddr_in addr = {
+ .sin_addr = endp->net_end.addr,
+ .sin_port = endp->net_end.rtp_port,
+ };
+
+ endp->bts_end.octets += msg->len;
+ endp->bts_end.packets++;
+
+ mgcp_send(endp, MGCP_DEST_NET, 1, &addr, (char *)msg->data, msg->len);
+ msgb_free(msg);
+}
+
+static void scheduled_tx_bts_cb(struct msgb *msg, void *data)
+{
+ struct mgcp_endpoint *endp = data;
+ struct sockaddr_in addr = {
+ .sin_addr = endp->bts_end.addr,
+ .sin_port = endp->bts_end.rtp_port,
+ };
+
+ endp->net_end.octets += msg->len;
+ endp->net_end.packets++;
+
+ mgcp_send(endp, MGCP_DEST_BTS, 1, &addr, (char *)msg->data, msg->len);
+ msgb_free(msg);
+}
+
+static struct msgb *osmux_recv(struct osmo_fd *ofd, struct sockaddr_in *addr)
+{
+ struct msgb *msg;
+ socklen_t slen = sizeof(*addr);
+ int ret;
+
+ msg = msgb_alloc(4096, "OSMUX");
+ if (!msg) {
+ LOGP(DLMGCP, LOGL_ERROR, "cannot allocate message\n");
+ return NULL;
+ }
+ ret = recvfrom(ofd->fd, msg->data, msg->data_len, 0,
+ (struct sockaddr *)addr, &slen);
+ if (ret <= 0) {
+ msgb_free(msg);
+ LOGP(DLMGCP, LOGL_ERROR, "cannot receive message\n");
+ return NULL;
+ }
+ msgb_put(msg, ret);
+
+ return msg;
+}
+
+#define osmux_chunk_length(msg, rem) (rem - msg->len);
+
+int osmux_read_from_bsc_nat_cb(struct osmo_fd *ofd, unsigned int what)
+{
+ struct msgb *msg;
+ struct osmux_hdr *osmuxh;
+ struct llist_head list;
+ struct sockaddr_in addr;
+ struct mgcp_config *cfg = ofd->data;
+ uint32_t rem;
+
+ msg = osmux_recv(ofd, &addr);
+ if (!msg)
+ return -1;
+
+ /* not any further processing dummy messages */
+ if (msg->data[0] == MGCP_DUMMY_LOAD)
+ goto out;
+
+ rem = msg->len;
+ while((osmuxh = osmux_xfrm_output_pull(msg)) != NULL) {
+ struct mgcp_endpoint *endp;
+
+ /* Yes, we use MGCP_DEST_NET to locate the origin */
+ endp = endpoint_lookup(cfg, osmuxh->circuit_id,
+ &addr.sin_addr, MGCP_DEST_NET);
+ if (!endp) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Cannot find an endpoint for circuit_id=%d\n",
+ osmuxh->circuit_id);
+ goto out;
+ }
+ endp->osmux.stats.octets += osmux_chunk_length(msg, rem);
+ endp->osmux.stats.chunks++;
+ rem = msg->len;
+
+ osmux_xfrm_output(osmuxh, &endp->osmux.out, &list);
+ osmux_tx_sched(&list, scheduled_tx_bts_cb, endp);
+ }
+out:
+ msgb_free(msg);
+ return 0;
+}
+
+/* This is called from the bsc-nat */
+static int osmux_handle_dummy(struct mgcp_config *cfg, struct sockaddr_in *addr,
+ struct msgb *msg)
+{
+ struct mgcp_endpoint *endp;
+ uint8_t osmux_cid;
+
+ if (msg->len < 1 + sizeof(osmux_cid)) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Discarding truncated Osmux dummy load\n");
+ goto out;
+ }
+
+ LOGP(DLMGCP, LOGL_DEBUG, "Received Osmux dummy load from %s\n",
+ inet_ntoa(addr->sin_addr));
+
+ if (!cfg->osmux) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "bsc wants to use Osmux but bsc-nat did not request it\n");
+ goto out;
+ }
+
+ /* extract the osmux CID from the dummy message */
+ memcpy(&osmux_cid, &msg->data[1], sizeof(osmux_cid));
+
+ endp = endpoint_lookup(cfg, osmux_cid, &addr->sin_addr, MGCP_DEST_BTS);
+ if (!endp) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Cannot find endpoint for Osmux CID %d\n", osmux_cid);
+ goto out;
+ }
+
+ if (endp->osmux.state == OSMUX_STATE_ENABLED)
+ goto out;
+
+ if (osmux_enable_endpoint(endp, &addr->sin_addr, addr->sin_port) < 0 ) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Could not enable osmux in endpoint %d\n",
+ ENDPOINT_NUMBER(endp));
+ goto out;
+ }
+
+ LOGP(DLMGCP, LOGL_INFO, "Enabling osmux in endpoint %d for %s:%u\n",
+ ENDPOINT_NUMBER(endp), inet_ntoa(addr->sin_addr),
+ ntohs(addr->sin_port));
+out:
+ msgb_free(msg);
+ return 0;
+}
+
+int osmux_read_from_bsc_cb(struct osmo_fd *ofd, unsigned int what)
+{
+ struct msgb *msg;
+ struct osmux_hdr *osmuxh;
+ struct llist_head list;
+ struct sockaddr_in addr;
+ struct mgcp_config *cfg = ofd->data;
+ uint32_t rem;
+
+ msg = osmux_recv(ofd, &addr);
+ if (!msg)
+ return -1;
+
+ /* not any further processing dummy messages */
+ if (msg->data[0] == MGCP_DUMMY_LOAD)
+ return osmux_handle_dummy(cfg, &addr, msg);
+
+ rem = msg->len;
+ while((osmuxh = osmux_xfrm_output_pull(msg)) != NULL) {
+ struct mgcp_endpoint *endp;
+
+ /* Yes, we use MGCP_DEST_BTS to locate the origin */
+ endp = endpoint_lookup(cfg, osmuxh->circuit_id,
+ &addr.sin_addr, MGCP_DEST_BTS);
+ if (!endp) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Cannot find an endpoint for circuit_id=%d\n",
+ osmuxh->circuit_id);
+ goto out;
+ }
+ endp->osmux.stats.octets += osmux_chunk_length(msg, rem);
+ endp->osmux.stats.chunks++;
+ rem = msg->len;
+
+ osmux_xfrm_output(osmuxh, &endp->osmux.out, &list);
+ osmux_tx_sched(&list, scheduled_tx_net_cb, endp);
+ }
+out:
+ msgb_free(msg);
+ return 0;
+}
+
+int osmux_init(int role, struct mgcp_config *cfg)
+{
+ int ret;
+
+ switch(role) {
+ case OSMUX_ROLE_BSC:
+ osmux_fd.cb = osmux_read_from_bsc_nat_cb;
+ break;
+ case OSMUX_ROLE_BSC_NAT:
+ osmux_fd.cb = osmux_read_from_bsc_cb;
+ break;
+ default:
+ LOGP(DLMGCP, LOGL_ERROR, "wrong role for OSMUX\n");
+ return -1;
+ }
+ osmux_fd.data = cfg;
+
+ ret = mgcp_create_bind(cfg->osmux_addr, &osmux_fd, cfg->osmux_port);
+ if (ret < 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "cannot bind OSMUX socket\n");
+ return ret;
+ }
+ mgcp_set_ip_tos(osmux_fd.fd, cfg->endp_dscp);
+ osmux_fd.when |= BSC_FD_READ;
+
+ ret = osmo_fd_register(&osmux_fd);
+ if (ret < 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "cannot register OSMUX socket\n");
+ return ret;
+ }
+ cfg->osmux_init = 1;
+
+ return 0;
+}
+
+int osmux_enable_endpoint(struct mgcp_endpoint *endp, struct in_addr *addr, uint16_t port)
+{
+ /* If osmux is enabled, initialize the output handler. This handler is
+ * used to reconstruct the RTP flow from osmux. The RTP SSRC is
+ * allocated based on the circuit ID (endp->osmux.cid), which is unique
+ * in the local scope to the BSC/BSC-NAT. We use it to divide the RTP
+ * SSRC space (2^32) by the 256 possible circuit IDs, then randomly
+ * select one value from that window. Thus, we have no chance to have
+ * overlapping RTP SSRC traveling to the BTSes behind the BSC,
+ * similarly, for flows traveling to the MSC.
+ */
+ static const uint32_t rtp_ssrc_winlen = UINT32_MAX / 256;
+
+ if (endp->osmux.state == OSMUX_STATE_DISABLED) {
+ LOGP(DLMGCP, LOGL_ERROR, "Endpoint %u didn't request Osmux\n",
+ ENDPOINT_NUMBER(endp));
+ return -1;
+ }
+
+ osmux_xfrm_output_init(&endp->osmux.out,
+ (endp->osmux.cid * rtp_ssrc_winlen) +
+ (random() % rtp_ssrc_winlen));
+
+ endp->osmux.in = osmux_handle_lookup(endp->cfg, addr, port);
+ if (!endp->osmux.in) {
+ LOGP(DLMGCP, LOGL_ERROR, "Cannot allocate input osmux handle\n");
+ return -1;
+ }
+ if (!osmux_xfrm_input_open_circuit(endp->osmux.in, endp->osmux.cid,
+ endp->cfg->osmux_dummy)) {
+ LOGP(DLMGCP, LOGL_ERROR, "Cannot open osmux circuit %u\n",
+ endp->osmux.cid);
+ return -1;
+ }
+
+ switch (endp->cfg->role) {
+ case MGCP_BSC_NAT:
+ endp->type = MGCP_OSMUX_BSC_NAT;
+ break;
+ case MGCP_BSC:
+ endp->type = MGCP_OSMUX_BSC;
+ break;
+ }
+ endp->osmux.state = OSMUX_STATE_ENABLED;
+
+ return 0;
+}
+
+void osmux_disable_endpoint(struct mgcp_endpoint *endp)
+{
+ LOGP(DLMGCP, LOGL_INFO, "Releasing endpoint %u using Osmux CID %u\n",
+ ENDPOINT_NUMBER(endp), endp->osmux.cid);
+ osmux_xfrm_input_close_circuit(endp->osmux.in, endp->osmux.cid);
+ endp->osmux.state = OSMUX_STATE_DISABLED;
+ endp->osmux.cid = -1;
+ osmux_handle_put(endp->osmux.in);
+}
+
+void osmux_release_cid(struct mgcp_endpoint *endp)
+{
+ if (endp->osmux.allocated_cid >= 0)
+ osmux_put_cid(endp->osmux.allocated_cid);
+ endp->osmux.allocated_cid = -1;
+}
+
+void osmux_allocate_cid(struct mgcp_endpoint *endp)
+{
+ osmux_release_cid(endp);
+ endp->osmux.allocated_cid = osmux_get_cid();
+}
+
+/* We don't need to send the dummy load for osmux so often as another endpoint
+ * may have already punched the hole in the firewall. This approach is simple
+ * though.
+ */
+int osmux_send_dummy(struct mgcp_endpoint *endp)
+{
+ char buf[1 + sizeof(uint8_t)];
+ struct in_addr addr_unset = {};
+
+ buf[0] = MGCP_DUMMY_LOAD;
+ memcpy(&buf[1], &endp->osmux.cid, sizeof(endp->osmux.cid));
+
+ /* Wait until we have the connection information from MDCX */
+ if (memcmp(&endp->net_end.addr, &addr_unset, sizeof(addr_unset)) == 0)
+ return 0;
+
+ if (endp->osmux.state == OSMUX_STATE_ACTIVATING) {
+ if (osmux_enable_endpoint(endp, &endp->net_end.addr,
+ htons(endp->cfg->osmux_port)) < 0) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Could not activate osmux in endpoint %d\n",
+ ENDPOINT_NUMBER(endp));
+ }
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Osmux CID %u for %s:%u is now enabled\n",
+ endp->osmux.cid, inet_ntoa(endp->net_end.addr),
+ endp->cfg->osmux_port);
+ }
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "sending OSMUX dummy load to %s CID %u\n",
+ inet_ntoa(endp->net_end.addr), endp->osmux.cid);
+
+ return mgcp_udp_send(osmux_fd.fd, &endp->net_end.addr,
+ htons(endp->cfg->osmux_port), buf, sizeof(buf));
+}
+
+/* bsc-nat allocates/releases the Osmux circuit ID */
+static uint8_t osmux_cid_bitmap[(OSMUX_CID_MAX + 1) / 8];
+
+int osmux_used_cid(void)
+{
+ int i, j, used = 0;
+
+ for (i = 0; i < sizeof(osmux_cid_bitmap); i++) {
+ for (j = 0; j < 8; j++) {
+ if (osmux_cid_bitmap[i] & (1 << j))
+ used += 1;
+ }
+ }
+
+ return used;
+}
+
+int osmux_get_cid(void)
+{
+ int i, j;
+
+ for (i = 0; i < sizeof(osmux_cid_bitmap); i++) {
+ for (j = 0; j < 8; j++) {
+ if (osmux_cid_bitmap[i] & (1 << j))
+ continue;
+
+ osmux_cid_bitmap[i] |= (1 << j);
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "Allocating Osmux CID %u from pool\n", (i * 8) + j);
+ return (i * 8) + j;
+ }
+ }
+
+ LOGP(DLMGCP, LOGL_ERROR, "All Osmux circuits are in use!\n");
+ return -1;
+}
+
+void osmux_put_cid(uint8_t osmux_cid)
+{
+ LOGP(DLMGCP, LOGL_DEBUG, "Osmux CID %u is back to the pool\n", osmux_cid);
+ osmux_cid_bitmap[osmux_cid / 8] &= ~(1 << (osmux_cid % 8));
+}
diff --git a/src/libosmo-legacy-mgcp/mgcp_protocol.c b/src/libosmo-legacy-mgcp/mgcp_protocol.c
new file mode 100644
index 0000000..bc1ec0d
--- /dev/null
+++ b/src/libosmo-legacy-mgcp/mgcp_protocol.c
@@ -0,0 +1,1640 @@
+/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
+/* The protocol implementation */
+
+/*
+ * (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2012 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <limits.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/talloc.h>
+#include <osmocom/core/select.h>
+
+#include <osmocom/legacy_mgcp/mgcp.h>
+#include <osmocom/legacy_mgcp/mgcp_internal.h>
+
+#define for_each_non_empty_line(line, save) \
+ for (line = strtok_r(NULL, "\r\n", &save); line;\
+ line = strtok_r(NULL, "\r\n", &save))
+
+
+static void mgcp_rtp_end_reset(struct mgcp_rtp_end *end);
+
+struct mgcp_request {
+ char *name;
+ struct msgb *(*handle_request) (struct mgcp_parse_data *data);
+ char *debug_name;
+};
+
+#define MGCP_REQUEST(NAME, REQ, DEBUG_NAME) \
+ { .name = NAME, .handle_request = REQ, .debug_name = DEBUG_NAME },
+
+static struct msgb *handle_audit_endpoint(struct mgcp_parse_data *data);
+static struct msgb *handle_create_con(struct mgcp_parse_data *data);
+static struct msgb *handle_delete_con(struct mgcp_parse_data *data);
+static struct msgb *handle_modify_con(struct mgcp_parse_data *data);
+static struct msgb *handle_rsip(struct mgcp_parse_data *data);
+static struct msgb *handle_noti_req(struct mgcp_parse_data *data);
+
+static void create_transcoder(struct mgcp_endpoint *endp);
+static void delete_transcoder(struct mgcp_endpoint *endp);
+
+static int setup_rtp_processing(struct mgcp_endpoint *endp);
+
+static int mgcp_analyze_header(struct mgcp_parse_data *parse, char *data);
+
+/* Display an mgcp message on the log output */
+void display_mgcp_message(unsigned char *message, unsigned int len,
+ char *preamble)
+{
+ unsigned char line[80];
+ unsigned char *ptr;
+ unsigned int consumed = 0;
+ unsigned int consumed_line = 0;
+ unsigned int line_count = 0;
+
+ if (!log_check_level(DLMGCP, LOGL_DEBUG))
+ return;
+
+ while (1) {
+ memset(line, 0, sizeof(line));
+ ptr = line;
+ consumed_line = 0;
+ do {
+ if (*message != '\n' && *message != '\r') {
+ *ptr = *message;
+ ptr++;
+ }
+ message++;
+ consumed++;
+ consumed_line++;
+ } while (*message != '\n' && consumed < len
+ && consumed_line < sizeof(line));
+
+ if (strlen((const char *)line)) {
+ LOGP(DLMGCP, LOGL_DEBUG, "%s: line #%02u: %s\n",
+ preamble, line_count, line);
+ line_count++;
+ }
+
+ if (consumed >= len)
+ return;
+ }
+}
+
+static int mgcp_check_param(const struct mgcp_endpoint *endp, const char *line)
+{
+ const size_t line_len = strlen(line);
+ if (line[0] != '\0' && line_len < 2) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Wrong MGCP option format: '%s' on 0x%x\n",
+ line, ENDPOINT_NUMBER(endp));
+ return 0;
+ }
+
+ return 1;
+}
+
+static uint32_t generate_call_id(struct mgcp_config *cfg)
+{
+ int i;
+
+ /* use the call id */
+ ++cfg->last_call_id;
+
+ /* handle wrap around */
+ if (cfg->last_call_id == CI_UNUSED)
+ ++cfg->last_call_id;
+
+ /* callstack can only be of size number_of_endpoints */
+ /* verify that the call id is free, e.g. in case of overrun */
+ for (i = 1; i < cfg->trunk.number_endpoints; ++i)
+ if (cfg->trunk.endpoints[i].ci == cfg->last_call_id)
+ return generate_call_id(cfg);
+
+ return cfg->last_call_id;
+}
+
+/*
+ * array of function pointers for handling various
+ * messages. In the future this might be binary sorted
+ * for performance reasons.
+ */
+static const struct mgcp_request mgcp_requests [] = {
+ MGCP_REQUEST("AUEP", handle_audit_endpoint, "AuditEndpoint")
+ MGCP_REQUEST("CRCX", handle_create_con, "CreateConnection")
+ MGCP_REQUEST("DLCX", handle_delete_con, "DeleteConnection")
+ MGCP_REQUEST("MDCX", handle_modify_con, "ModifiyConnection")
+ MGCP_REQUEST("RQNT", handle_noti_req, "NotificationRequest")
+
+ /* SPEC extension */
+ MGCP_REQUEST("RSIP", handle_rsip, "ReSetInProgress")
+};
+
+static struct msgb *mgcp_msgb_alloc(void)
+{
+ struct msgb *msg;
+ msg = msgb_alloc_headroom(4096, 128, "MGCP msg");
+ if (!msg)
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to msgb for MGCP data.\n");
+
+ return msg;
+}
+
+static struct msgb *do_retransmission(const struct mgcp_endpoint *endp)
+{
+ struct msgb *msg = mgcp_msgb_alloc();
+ if (!msg)
+ return NULL;
+
+ msg->l2h = msgb_put(msg, strlen(endp->last_response));
+ memcpy(msg->l2h, endp->last_response, msgb_l2len(msg));
+ display_mgcp_message(msg->l2h, msgb_l2len(msg), "Retransmitted response");
+ return msg;
+}
+
+static struct msgb *create_resp(struct mgcp_endpoint *endp, int code,
+ const char *txt, const char *msg,
+ const char *trans, const char *param,
+ const char *sdp)
+{
+ int len;
+ struct msgb *res;
+
+ res = mgcp_msgb_alloc();
+ if (!res)
+ return NULL;
+
+ len = snprintf((char *) res->data, 2048, "%d %s%s%s\r\n%s",
+ code, trans, txt, param ? param : "", sdp ? sdp : "");
+ if (len < 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to sprintf MGCP response.\n");
+ msgb_free(res);
+ return NULL;
+ }
+
+ res->l2h = msgb_put(res, len);
+ LOGP(DLMGCP, LOGL_DEBUG, "Generated response: code=%d\n", code);
+ display_mgcp_message(res->l2h, msgb_l2len(res), "Generated response");
+
+ /*
+ * Remember the last transmission per endpoint.
+ */
+ if (endp) {
+ struct mgcp_trunk_config *tcfg = endp->tcfg;
+ talloc_free(endp->last_response);
+ talloc_free(endp->last_trans);
+ endp->last_trans = talloc_strdup(tcfg->endpoints, trans);
+ endp->last_response = talloc_strndup(tcfg->endpoints,
+ (const char *) res->l2h,
+ msgb_l2len(res));
+ }
+
+ return res;
+}
+
+static struct msgb *create_ok_resp_with_param(struct mgcp_endpoint *endp,
+ int code, const char *msg,
+ const char *trans, const char *param)
+{
+ return create_resp(endp, code, " OK", msg, trans, param, NULL);
+}
+
+static struct msgb *create_ok_response(struct mgcp_endpoint *endp,
+ int code, const char *msg, const char *trans)
+{
+ return create_ok_resp_with_param(endp, code, msg, trans, NULL);
+}
+
+static struct msgb *create_err_response(struct mgcp_endpoint *endp,
+ int code, const char *msg, const char *trans)
+{
+ return create_resp(endp, code, " FAIL", msg, trans, NULL, NULL);
+}
+
+static int write_response_sdp(struct mgcp_endpoint *endp,
+ char *sdp_record, size_t size, const char *addr)
+{
+ const char *fmtp_extra;
+ const char *audio_name;
+ int payload_type;
+ int len;
+ int nchars;
+
+ endp->cfg->get_net_downlink_format_cb(endp, &payload_type,
+ &audio_name, &fmtp_extra);
+
+ len = snprintf(sdp_record, size,
+ "v=0\r\n"
+ "o=- %u 23 IN IP4 %s\r\n"
+ "s=-\r\n"
+ "c=IN IP4 %s\r\n"
+ "t=0 0\r\n",
+ endp->ci, addr, addr);
+
+ if (len < 0 || len >= size)
+ goto buffer_too_small;
+
+ if (payload_type >= 0) {
+ nchars = snprintf(sdp_record + len, size - len,
+ "m=audio %d RTP/AVP %d\r\n",
+ endp->net_end.local_port, payload_type);
+ if (nchars < 0 || nchars >= size - len)
+ goto buffer_too_small;
+
+ len += nchars;
+
+ if (audio_name && endp->tcfg->audio_send_name) {
+ nchars = snprintf(sdp_record + len, size - len,
+ "a=rtpmap:%d %s\r\n",
+ payload_type, audio_name);
+
+ if (nchars < 0 || nchars >= size - len)
+ goto buffer_too_small;
+
+ len += nchars;
+ }
+
+ if (fmtp_extra) {
+ nchars = snprintf(sdp_record + len, size - len,
+ "%s\r\n", fmtp_extra);
+
+ if (nchars < 0 || nchars >= size - len)
+ goto buffer_too_small;
+
+ len += nchars;
+ }
+ }
+ if (endp->bts_end.packet_duration_ms > 0 && endp->tcfg->audio_send_ptime) {
+ nchars = snprintf(sdp_record + len, size - len,
+ "a=ptime:%d\r\n",
+ endp->bts_end.packet_duration_ms);
+ if (nchars < 0 || nchars >= size - len)
+ goto buffer_too_small;
+
+ len += nchars;
+ }
+
+ return len;
+
+buffer_too_small:
+ LOGP(DLMGCP, LOGL_ERROR, "SDP buffer too small: %zu (needed %d)\n",
+ size, len);
+ return -1;
+}
+
+static struct msgb *create_response_with_sdp(struct mgcp_endpoint *endp,
+ const char *msg, const char *trans_id)
+{
+ const char *addr = endp->cfg->local_ip;
+ char sdp_record[4096];
+ int len;
+ int nchars;
+ char osmux_extension[strlen("\nX-Osmux: 255") + 1];
+
+ if (!addr)
+ addr = mgcp_net_src_addr(endp);
+
+ if (endp->osmux.state == OSMUX_STATE_NEGOTIATING) {
+ sprintf(osmux_extension, "\nX-Osmux: %u", endp->osmux.cid);
+ endp->osmux.state = OSMUX_STATE_ACTIVATING;
+ } else {
+ osmux_extension[0] = '\0';
+ }
+
+ len = snprintf(sdp_record, sizeof(sdp_record),
+ "I: %u%s\n\n", endp->ci, osmux_extension);
+ if (len < 0)
+ return NULL;
+
+ nchars = write_response_sdp(endp, sdp_record + len,
+ sizeof(sdp_record) - len - 1, addr);
+ if (nchars < 0)
+ return NULL;
+
+ len += nchars;
+
+ sdp_record[sizeof(sdp_record) - 1] = '\0';
+
+ return create_resp(endp, 200, " OK", msg, trans_id, NULL, sdp_record);
+}
+
+static void send_dummy(struct mgcp_endpoint *endp)
+{
+ if (endp->osmux.state != OSMUX_STATE_DISABLED)
+ osmux_send_dummy(endp);
+ else
+ mgcp_send_dummy(endp);
+}
+
+/*
+ * handle incoming messages:
+ * - this can be a command (four letters, space, transaction id)
+ * - or a response (three numbers, space, transaction id)
+ */
+struct msgb *mgcp_handle_message(struct mgcp_config *cfg, struct msgb *msg)
+{
+ struct mgcp_parse_data pdata;
+ int i, code, handled = 0;
+ struct msgb *resp = NULL;
+ char *data;
+
+ if (msgb_l2len(msg) < 4) {
+ LOGP(DLMGCP, LOGL_ERROR, "msg too short: %d\n", msg->len);
+ return NULL;
+ }
+
+ if (mgcp_msg_terminate_nul(msg))
+ return NULL;
+
+ display_mgcp_message(msg->l2h, msgb_l2len(msg), "Received message");
+
+ /* attempt to treat it as a response */
+ if (sscanf((const char *)&msg->l2h[0], "%3d %*s", &code) == 1) {
+ LOGP(DLMGCP, LOGL_DEBUG, "Response: Code: %d\n", code);
+ return NULL;
+ }
+
+ msg->l3h = &msg->l2h[4];
+
+
+ /*
+ * Check for a duplicate message and respond.
+ */
+ memset(&pdata, 0, sizeof(pdata));
+ pdata.cfg = cfg;
+ data = strline_r((char *) msg->l3h, &pdata.save);
+ pdata.found = mgcp_analyze_header(&pdata, data);
+ if (pdata.endp && pdata.trans
+ && pdata.endp->last_trans
+ && strcmp(pdata.endp->last_trans, pdata.trans) == 0) {
+ return do_retransmission(pdata.endp);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(mgcp_requests); ++i) {
+ if (strncmp(mgcp_requests[i].name, (const char *) &msg->l2h[0], 4) == 0) {
+ handled = 1;
+ resp = mgcp_requests[i].handle_request(&pdata);
+ break;
+ }
+ }
+
+ if (!handled)
+ LOGP(DLMGCP, LOGL_NOTICE, "MSG with type: '%.4s' not handled\n", &msg->l2h[0]);
+
+ return resp;
+}
+
+/**
+ * We have a null terminated string with the endpoint name here. We only
+ * support two kinds. Simple ones as seen on the BSC level and the ones
+ * seen on the trunk side.
+ */
+static struct mgcp_endpoint *find_e1_endpoint(struct mgcp_config *cfg,
+ const char *mgcp)
+{
+ char *rest = NULL;
+ struct mgcp_trunk_config *tcfg;
+ int trunk, endp;
+
+ trunk = strtoul(mgcp + 6, &rest, 10);
+ if (rest == NULL || rest[0] != '/' || trunk < 1) {
+ LOGP(DLMGCP, LOGL_ERROR, "Wrong trunk name '%s'\n", mgcp);
+ return NULL;
+ }
+
+ endp = strtoul(rest + 1, &rest, 10);
+ if (rest == NULL || rest[0] != '@') {
+ LOGP(DLMGCP, LOGL_ERROR, "Wrong endpoint name '%s'\n", mgcp);
+ return NULL;
+ }
+
+ /* signalling is on timeslot 1 */
+ if (endp == 1)
+ return NULL;
+
+ tcfg = mgcp_trunk_num(cfg, trunk);
+ if (!tcfg) {
+ LOGP(DLMGCP, LOGL_ERROR, "The trunk %d is not declared.\n", trunk);
+ return NULL;
+ }
+
+ if (!tcfg->endpoints) {
+ LOGP(DLMGCP, LOGL_ERROR, "Endpoints of trunk %d not allocated.\n", trunk);
+ return NULL;
+ }
+
+ if (endp < 1 || endp >= tcfg->number_endpoints) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to find endpoint '%s'\n", mgcp);
+ return NULL;
+ }
+
+ return &tcfg->endpoints[endp];
+}
+
+static struct mgcp_endpoint *find_endpoint(struct mgcp_config *cfg, const char *mgcp)
+{
+ char *endptr = NULL;
+ unsigned int gw = INT_MAX;
+
+ if (strncmp(mgcp, "ds/e1", 5) == 0)
+ return find_e1_endpoint(cfg, mgcp);
+
+ gw = strtoul(mgcp, &endptr, 16);
+ if (gw > 0 && gw < cfg->trunk.number_endpoints && endptr[0] == '@')
+ return &cfg->trunk.endpoints[gw];
+
+ LOGP(DLMGCP, LOGL_ERROR, "Not able to find the endpoint: '%s'\n", mgcp);
+ return NULL;
+}
+
+/**
+ * @returns 0 when the status line was complete and transaction_id and
+ * endp out parameters are set.
+ */
+static int mgcp_analyze_header(struct mgcp_parse_data *pdata, char *data)
+{
+ int i = 0;
+ char *elem, *save = NULL;
+
+ OSMO_ASSERT(data);
+ pdata->trans = "000000";
+
+ for (elem = strtok_r(data, " ", &save); elem;
+ elem = strtok_r(NULL, " ", &save)) {
+ switch (i) {
+ case 0:
+ pdata->trans = elem;
+ break;
+ case 1:
+ pdata->endp = find_endpoint(pdata->cfg, elem);
+ if (!pdata->endp) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Unable to find Endpoint `%s'\n", elem);
+ return -1;
+ }
+ break;
+ case 2:
+ if (strcmp("MGCP", elem)) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "MGCP header parsing error\n");
+ return -1;
+ }
+ break;
+ case 3:
+ if (strcmp("1.0", elem)) {
+ LOGP(DLMGCP, LOGL_ERROR, "MGCP version `%s' "
+ "not supported\n", elem);
+ return -1;
+ }
+ break;
+ }
+ i++;
+ }
+
+ if (i != 4) {
+ LOGP(DLMGCP, LOGL_ERROR, "MGCP status line too short.\n");
+ pdata->trans = "000000";
+ pdata->endp = NULL;
+ return -1;
+ }
+
+ return 0;
+}
+
+static int verify_call_id(const struct mgcp_endpoint *endp,
+ const char *callid)
+{
+ if (strcmp(endp->callid, callid) != 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "CallIDs does not match on 0x%x. '%s' != '%s'\n",
+ ENDPOINT_NUMBER(endp), endp->callid, callid);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int verify_ci(const struct mgcp_endpoint *endp,
+ const char *_ci)
+{
+ uint32_t ci = strtoul(_ci, NULL, 10);
+
+ if (ci != endp->ci) {
+ LOGP(DLMGCP, LOGL_ERROR, "ConnectionIdentifiers do not match on 0x%x. %u != %s\n",
+ ENDPOINT_NUMBER(endp), endp->ci, _ci);
+ return -1;
+ }
+
+ return 0;
+}
+
+static struct msgb *handle_audit_endpoint(struct mgcp_parse_data *p)
+{
+ if (p->found != 0)
+ return create_err_response(NULL, 500, "AUEP", p->trans);
+ else
+ return create_ok_response(p->endp, 200, "AUEP", p->trans);
+}
+
+static int parse_conn_mode(const char *msg, struct mgcp_endpoint *endp)
+{
+ int ret = 0;
+ if (strcmp(msg, "recvonly") == 0)
+ endp->conn_mode = MGCP_CONN_RECV_ONLY;
+ else if (strcmp(msg, "sendrecv") == 0)
+ endp->conn_mode = MGCP_CONN_RECV_SEND;
+ else if (strcmp(msg, "sendonly") == 0)
+ endp->conn_mode = MGCP_CONN_SEND_ONLY;
+ else if (strcmp(msg, "loopback") == 0)
+ endp->conn_mode = MGCP_CONN_LOOPBACK;
+ else {
+ LOGP(DLMGCP, LOGL_ERROR, "Unknown connection mode: '%s'\n", msg);
+ ret = -1;
+ }
+
+ endp->net_end.output_enabled =
+ endp->conn_mode & MGCP_CONN_SEND_ONLY ? 1 : 0;
+ endp->bts_end.output_enabled =
+ endp->conn_mode & MGCP_CONN_RECV_ONLY ? 1 : 0;
+
+ LOGP(DLMGCP, LOGL_DEBUG, "endpoint %x connection mode '%s' %d output_enabled net %d bts %d\n",
+ ENDPOINT_NUMBER(endp),
+ msg, endp->conn_mode, endp->net_end.output_enabled,
+ endp->bts_end.output_enabled);
+
+ return ret;
+}
+
+static int allocate_port(struct mgcp_endpoint *endp, struct mgcp_rtp_end *end,
+ struct mgcp_port_range *range,
+ int (*alloc)(struct mgcp_endpoint *endp, int port))
+{
+ int i;
+
+ if (range->mode == PORT_ALLOC_STATIC) {
+ end->local_alloc = PORT_ALLOC_STATIC;
+ return 0;
+ }
+
+ /* attempt to find a port */
+ for (i = 0; i < 200; ++i) {
+ int rc;
+
+ if (range->last_port >= range->range_end)
+ range->last_port = range->range_start;
+
+ rc = alloc(endp, range->last_port);
+
+ range->last_port += 2;
+ if (rc == 0) {
+ end->local_alloc = PORT_ALLOC_DYNAMIC;
+ return 0;
+ }
+
+ }
+
+ LOGP(DLMGCP, LOGL_ERROR, "Allocating a RTP/RTCP port failed 200 times 0x%x.\n",
+ ENDPOINT_NUMBER(endp));
+ return -1;
+}
+
+static int allocate_ports(struct mgcp_endpoint *endp)
+{
+ if (allocate_port(endp, &endp->net_end, &endp->cfg->net_ports,
+ mgcp_bind_net_rtp_port) != 0)
+ return -1;
+
+ if (allocate_port(endp, &endp->bts_end, &endp->cfg->bts_ports,
+ mgcp_bind_bts_rtp_port) != 0) {
+ mgcp_rtp_end_reset(&endp->net_end);
+ return -1;
+ }
+
+ if (endp->cfg->transcoder_ip && endp->tcfg->trunk_type == MGCP_TRUNK_VIRTUAL) {
+ if (allocate_port(endp, &endp->trans_net,
+ &endp->cfg->transcoder_ports,
+ mgcp_bind_trans_net_rtp_port) != 0) {
+ mgcp_rtp_end_reset(&endp->net_end);
+ mgcp_rtp_end_reset(&endp->bts_end);
+ return -1;
+ }
+
+ if (allocate_port(endp, &endp->trans_bts,
+ &endp->cfg->transcoder_ports,
+ mgcp_bind_trans_bts_rtp_port) != 0) {
+ mgcp_rtp_end_reset(&endp->net_end);
+ mgcp_rtp_end_reset(&endp->bts_end);
+ mgcp_rtp_end_reset(&endp->trans_net);
+ return -1;
+ }
+
+ /* remember that we have set up transcoding */
+ endp->type = MGCP_RTP_TRANSCODED;
+ }
+
+ return 0;
+}
+
+/* Set the LCO from a string (see RFC 3435).
+ * The string is stored in the 'string' field. A NULL string is handled excatly
+ * like an empty string, the 'string' field is never NULL after this function
+ * has been called. */
+static void set_local_cx_options(void *ctx, struct mgcp_lco *lco,
+ const char *options)
+{
+ char *p_opt, *a_opt;
+ char codec[9];
+
+ talloc_free(lco->string);
+ talloc_free(lco->codec);
+ lco->codec = NULL;
+ lco->pkt_period_min = lco->pkt_period_max = 0;
+ lco->string = talloc_strdup(ctx, options ? options : "");
+
+ p_opt = strstr(lco->string, "p:");
+ if (p_opt && sscanf(p_opt, "p:%d-%d",
+ &lco->pkt_period_min, &lco->pkt_period_max) == 1)
+ lco->pkt_period_max = lco->pkt_period_min;
+
+ a_opt = strstr(lco->string, "a:");
+ if (a_opt && sscanf(a_opt, "a:%8[^,]", codec) == 1)
+ lco->codec = talloc_strdup(ctx, codec);
+}
+
+void mgcp_rtp_end_config(struct mgcp_endpoint *endp, int expect_ssrc_change,
+ struct mgcp_rtp_end *rtp)
+{
+ struct mgcp_trunk_config *tcfg = endp->tcfg;
+
+ int patch_ssrc = expect_ssrc_change && tcfg->force_constant_ssrc;
+
+ rtp->force_aligned_timing = tcfg->force_aligned_timing;
+ rtp->force_constant_ssrc = patch_ssrc ? 1 : 0;
+
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "Configuring RTP endpoint: local port %d%s%s\n",
+ ntohs(rtp->rtp_port),
+ rtp->force_aligned_timing ? ", force constant timing" : "",
+ rtp->force_constant_ssrc ? ", force constant ssrc" : "");
+}
+
+uint32_t mgcp_rtp_packet_duration(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_end *rtp)
+{
+ int f = 0;
+
+ /* Get the number of frames per channel and packet */
+ if (rtp->frames_per_packet)
+ f = rtp->frames_per_packet;
+ else if (rtp->packet_duration_ms && rtp->codec.frame_duration_num) {
+ int den = 1000 * rtp->codec.frame_duration_num;
+ f = (rtp->packet_duration_ms * rtp->codec.frame_duration_den + den/2)
+ / den;
+ }
+
+ return rtp->codec.rate * f * rtp->codec.frame_duration_num / rtp->codec.frame_duration_den;
+}
+
+static int mgcp_parse_osmux_cid(const char *line)
+{
+ int osmux_cid;
+
+ if (sscanf(line + 2, "Osmux: %u", &osmux_cid) != 1)
+ return -1;
+
+ if (osmux_cid > OSMUX_CID_MAX) {
+ LOGP(DLMGCP, LOGL_ERROR, "Osmux ID too large: %u > %u\n",
+ osmux_cid, OSMUX_CID_MAX);
+ return -1;
+ }
+ LOGP(DLMGCP, LOGL_DEBUG, "bsc-nat offered Osmux CID %u\n", osmux_cid);
+
+ return osmux_cid;
+}
+
+static int mgcp_osmux_setup(struct mgcp_endpoint *endp, const char *line)
+{
+ if (!endp->cfg->osmux_init) {
+ if (osmux_init(OSMUX_ROLE_BSC, endp->cfg) < 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "Cannot init OSMUX\n");
+ return -1;
+ }
+ LOGP(DLMGCP, LOGL_NOTICE, "OSMUX socket has been set up\n");
+ }
+
+ return mgcp_parse_osmux_cid(line);
+}
+
+static struct msgb *handle_create_con(struct mgcp_parse_data *p)
+{
+ struct mgcp_trunk_config *tcfg;
+ struct mgcp_endpoint *endp = p->endp;
+ int error_code = 400;
+
+ const char *local_options = NULL;
+ const char *callid = NULL;
+ const char *mode = NULL;
+ char *line;
+ int have_sdp = 0, osmux_cid = -1;
+
+ if (p->found != 0)
+ return create_err_response(NULL, 510, "CRCX", p->trans);
+
+ /* parse CallID C: and LocalParameters L: */
+ for_each_line(line, p->save) {
+ if (!mgcp_check_param(endp, line))
+ continue;
+
+ switch (line[0]) {
+ case 'L':
+ local_options = (const char *) line + 3;
+ break;
+ case 'C':
+ callid = (const char *) line + 3;
+ break;
+ case 'M':
+ mode = (const char *) line + 3;
+ break;
+ case 'X':
+ /* Osmux is not enabled in this bsc, ignore it so the
+ * bsc-nat knows that we don't want to use Osmux.
+ */
+ if (!p->endp->cfg->osmux)
+ break;
+
+ if (strncmp("Osmux: ", line + 2, strlen("Osmux: ")) == 0)
+ osmux_cid = mgcp_osmux_setup(endp, line);
+ break;
+ case '\0':
+ have_sdp = 1;
+ goto mgcp_header_done;
+ default:
+ LOGP(DLMGCP, LOGL_NOTICE, "Unhandled option: '%c'/%d on 0x%x\n",
+ *line, *line, ENDPOINT_NUMBER(endp));
+ break;
+ }
+ }
+
+mgcp_header_done:
+ tcfg = p->endp->tcfg;
+
+ /* Check required data */
+ if (!callid || !mode) {
+ LOGP(DLMGCP, LOGL_ERROR, "Missing callid and mode in CRCX on 0x%x\n",
+ ENDPOINT_NUMBER(endp));
+ return create_err_response(endp, 400, "CRCX", p->trans);
+ }
+
+ if (endp->allocated) {
+ if (tcfg->force_realloc) {
+ LOGP(DLMGCP, LOGL_NOTICE, "Endpoint 0x%x already allocated. Forcing realloc.\n",
+ ENDPOINT_NUMBER(endp));
+ mgcp_release_endp(endp);
+ if (p->cfg->realloc_cb)
+ p->cfg->realloc_cb(tcfg, ENDPOINT_NUMBER(endp));
+ } else {
+ LOGP(DLMGCP, LOGL_ERROR, "Endpoint is already used. 0x%x\n",
+ ENDPOINT_NUMBER(endp));
+ return create_err_response(endp, 400, "CRCX", p->trans);
+ }
+ }
+
+ /* copy some parameters */
+ endp->callid = talloc_strdup(tcfg->endpoints, callid);
+
+ set_local_cx_options(endp->tcfg->endpoints, &endp->local_options,
+ local_options);
+
+ if (parse_conn_mode(mode, endp) != 0) {
+ error_code = 517;
+ goto error2;
+ }
+
+ /* initialize */
+ endp->net_end.rtp_port = endp->net_end.rtcp_port = endp->bts_end.rtp_port = endp->bts_end.rtcp_port = 0;
+ mgcp_rtp_end_config(endp, 0, &endp->net_end);
+ mgcp_rtp_end_config(endp, 0, &endp->bts_end);
+
+ /* set to zero until we get the info */
+ memset(&endp->net_end.addr, 0, sizeof(endp->net_end.addr));
+
+ /* bind to the port now */
+ if (allocate_ports(endp) != 0)
+ goto error2;
+
+ /* assign a local call identifier or fail */
+ endp->ci = generate_call_id(p->cfg);
+ if (endp->ci == CI_UNUSED)
+ goto error2;
+
+ /* Annotate Osmux circuit ID and set it to negotiating state until this
+ * is fully set up from the dummy load.
+ */
+ endp->osmux.state = OSMUX_STATE_DISABLED;
+ if (osmux_cid >= 0) {
+ endp->osmux.cid = osmux_cid;
+ endp->osmux.state = OSMUX_STATE_NEGOTIATING;
+ } else if (endp->cfg->osmux == OSMUX_USAGE_ONLY) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Osmux only and no osmux offered on 0x%x\n", ENDPOINT_NUMBER(endp));
+ goto error2;
+ }
+
+ endp->allocated = 1;
+
+ /* set up RTP media parameters */
+ mgcp_set_audio_info(p->cfg, &endp->bts_end.codec, tcfg->audio_payload, tcfg->audio_name);
+ endp->bts_end.fmtp_extra = talloc_strdup(tcfg->endpoints,
+ tcfg->audio_fmtp_extra);
+ if (have_sdp)
+ mgcp_parse_sdp_data(endp, &endp->net_end, p);
+ else if (endp->local_options.codec)
+ mgcp_set_audio_info(p->cfg, &endp->net_end.codec,
+ PTYPE_UNDEFINED, endp->local_options.codec);
+
+ if (p->cfg->bts_force_ptime) {
+ endp->bts_end.packet_duration_ms = p->cfg->bts_force_ptime;
+ endp->bts_end.force_output_ptime = 1;
+ }
+
+ if (setup_rtp_processing(endp) != 0)
+ goto error2;
+
+ /* policy CB */
+ if (p->cfg->policy_cb) {
+ int rc;
+ rc = p->cfg->policy_cb(tcfg, ENDPOINT_NUMBER(endp),
+ MGCP_ENDP_CRCX, p->trans);
+ switch (rc) {
+ case MGCP_POLICY_REJECT:
+ LOGP(DLMGCP, LOGL_NOTICE, "CRCX rejected by policy on 0x%x\n",
+ ENDPOINT_NUMBER(endp));
+ mgcp_release_endp(endp);
+ return create_err_response(endp, 400, "CRCX", p->trans);
+ break;
+ case MGCP_POLICY_DEFER:
+ /* stop processing */
+ create_transcoder(endp);
+ return NULL;
+ break;
+ case MGCP_POLICY_CONT:
+ /* just continue */
+ break;
+ }
+ }
+
+ LOGP(DLMGCP, LOGL_DEBUG, "Creating endpoint on: 0x%x CI: %u port: %u/%u\n",
+ ENDPOINT_NUMBER(endp), endp->ci,
+ endp->net_end.local_port, endp->bts_end.local_port);
+ if (p->cfg->change_cb)
+ p->cfg->change_cb(tcfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_CRCX);
+
+ if (endp->conn_mode & MGCP_CONN_RECV_ONLY && tcfg->keepalive_interval != 0) {
+ send_dummy(endp);
+ }
+
+ create_transcoder(endp);
+ return create_response_with_sdp(endp, "CRCX", p->trans);
+error2:
+ mgcp_release_endp(endp);
+ LOGP(DLMGCP, LOGL_NOTICE, "Resource error on 0x%x\n", ENDPOINT_NUMBER(endp));
+ return create_err_response(endp, error_code, "CRCX", p->trans);
+}
+
+static struct msgb *handle_modify_con(struct mgcp_parse_data *p)
+{
+ struct mgcp_endpoint *endp = p->endp;
+ int error_code = 500;
+ int silent = 0;
+ int have_sdp = 0;
+ char *line;
+ const char *local_options = NULL;
+
+ if (p->found != 0)
+ return create_err_response(NULL, 510, "MDCX", p->trans);
+
+ if (endp->ci == CI_UNUSED) {
+ LOGP(DLMGCP, LOGL_ERROR, "Endpoint is not "
+ "holding a connection. 0x%x\n", ENDPOINT_NUMBER(endp));
+ return create_err_response(endp, 400, "MDCX", p->trans);
+ }
+
+ for_each_line(line, p->save) {
+ if (!mgcp_check_param(endp, line))
+ continue;
+
+ switch (line[0]) {
+ case 'C': {
+ if (verify_call_id(endp, line + 3) != 0)
+ goto error3;
+ break;
+ }
+ case 'I': {
+ if (verify_ci(endp, line + 3) != 0)
+ goto error3;
+ break;
+ }
+ case 'L':
+ local_options = (const char *) line + 3;
+ break;
+ case 'M':
+ if (parse_conn_mode(line + 3, endp) != 0) {
+ error_code = 517;
+ goto error3;
+ }
+ endp->orig_mode = endp->conn_mode;
+ break;
+ case 'Z':
+ silent = strcmp("noanswer", line + 3) == 0;
+ break;
+ case '\0':
+ /* SDP file begins */
+ have_sdp = 1;
+ mgcp_parse_sdp_data(endp, &endp->net_end, p);
+ /* This will exhaust p->save, so the loop will
+ * terminate next time.
+ */
+ break;
+ default:
+ LOGP(DLMGCP, LOGL_NOTICE, "Unhandled MGCP option: '%c'/%d on 0x%x\n",
+ line[0], line[0], ENDPOINT_NUMBER(endp));
+ break;
+ }
+ }
+
+ set_local_cx_options(endp->tcfg->endpoints, &endp->local_options,
+ local_options);
+
+ if (!have_sdp && endp->local_options.codec)
+ mgcp_set_audio_info(p->cfg, &endp->net_end.codec,
+ PTYPE_UNDEFINED, endp->local_options.codec);
+
+ if (setup_rtp_processing(endp) != 0)
+ goto error3;
+
+ /* policy CB */
+ if (p->cfg->policy_cb) {
+ int rc;
+ rc = p->cfg->policy_cb(endp->tcfg, ENDPOINT_NUMBER(endp),
+ MGCP_ENDP_MDCX, p->trans);
+ switch (rc) {
+ case MGCP_POLICY_REJECT:
+ LOGP(DLMGCP, LOGL_NOTICE, "MDCX rejected by policy on 0x%x\n",
+ ENDPOINT_NUMBER(endp));
+ if (silent)
+ goto out_silent;
+ return create_err_response(endp, 400, "MDCX", p->trans);
+ break;
+ case MGCP_POLICY_DEFER:
+ /* stop processing */
+ LOGP(DLMGCP, LOGL_DEBUG, "endp %x MDCX defer\n",
+ ENDPOINT_NUMBER(endp));
+ return NULL;
+ break;
+ case MGCP_POLICY_CONT:
+ /* just continue */
+ break;
+ }
+ }
+
+ mgcp_rtp_end_config(endp, 1, &endp->net_end);
+ mgcp_rtp_end_config(endp, 1, &endp->bts_end);
+
+ /* modify */
+ LOGP(DLMGCP, LOGL_DEBUG, "Modified endpoint on: 0x%x Server: %s:%u\n",
+ ENDPOINT_NUMBER(endp), inet_ntoa(endp->net_end.addr), ntohs(endp->net_end.rtp_port));
+ if (p->cfg->change_cb)
+ p->cfg->change_cb(endp->tcfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_MDCX);
+
+ if (endp->conn_mode & MGCP_CONN_RECV_ONLY &&
+ endp->tcfg->keepalive_interval != 0)
+ send_dummy(endp);
+
+ if (silent)
+ goto out_silent;
+
+ return create_response_with_sdp(endp, "MDCX", p->trans);
+
+error3:
+ return create_err_response(endp, error_code, "MDCX", p->trans);
+
+
+out_silent:
+ LOGP(DLMGCP, LOGL_DEBUG, "endp %x Modify endpoint: silent exit\n",
+ ENDPOINT_NUMBER(endp));
+ return NULL;
+}
+
+static struct msgb *handle_delete_con(struct mgcp_parse_data *p)
+{
+ struct mgcp_endpoint *endp = p->endp;
+ int error_code = 400;
+ int silent = 0;
+ char *line;
+ char stats[1048];
+
+ if (p->found != 0)
+ return create_err_response(NULL, error_code, "DLCX", p->trans);
+
+ if (!p->endp->allocated) {
+ LOGP(DLMGCP, LOGL_ERROR, "Endpoint is not used. 0x%x\n",
+ ENDPOINT_NUMBER(endp));
+ return create_err_response(endp, 400, "DLCX", p->trans);
+ }
+
+ for_each_line(line, p->save) {
+ if (!mgcp_check_param(endp, line))
+ continue;
+
+ switch (line[0]) {
+ case 'C':
+ if (verify_call_id(endp, line + 3) != 0)
+ goto error3;
+ break;
+ case 'I':
+ if (verify_ci(endp, line + 3) != 0)
+ goto error3;
+ break;
+ case 'Z':
+ silent = strcmp("noanswer", line + 3) == 0;
+ break;
+ default:
+ LOGP(DLMGCP, LOGL_NOTICE, "Unhandled option: '%c'/%d on 0x%x\n",
+ line[0], line[0], ENDPOINT_NUMBER(endp));
+ break;
+ }
+ }
+
+ /* policy CB */
+ if (p->cfg->policy_cb) {
+ int rc;
+ rc = p->cfg->policy_cb(endp->tcfg, ENDPOINT_NUMBER(endp),
+ MGCP_ENDP_DLCX, p->trans);
+ switch (rc) {
+ case MGCP_POLICY_REJECT:
+ LOGP(DLMGCP, LOGL_NOTICE, "DLCX rejected by policy on 0x%x\n",
+ ENDPOINT_NUMBER(endp));
+ if (silent)
+ goto out_silent;
+ return create_err_response(endp, 400, "DLCX", p->trans);
+ break;
+ case MGCP_POLICY_DEFER:
+ /* stop processing */
+ delete_transcoder(endp);
+ return NULL;
+ break;
+ case MGCP_POLICY_CONT:
+ /* just continue */
+ break;
+ }
+ }
+
+ /* free the connection */
+ LOGP(DLMGCP, LOGL_DEBUG, "Deleted endpoint on: 0x%x Server: %s:%u\n",
+ ENDPOINT_NUMBER(endp), inet_ntoa(endp->net_end.addr), ntohs(endp->net_end.rtp_port));
+
+ /* save the statistics of the current call */
+ mgcp_format_stats(endp, stats, sizeof(stats));
+
+ delete_transcoder(endp);
+ mgcp_release_endp(endp);
+ if (p->cfg->change_cb)
+ p->cfg->change_cb(endp->tcfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_DLCX);
+
+ if (silent)
+ goto out_silent;
+ return create_ok_resp_with_param(endp, 250, "DLCX", p->trans, stats);
+
+error3:
+ return create_err_response(endp, error_code, "DLCX", p->trans);
+
+out_silent:
+ return NULL;
+}
+
+static struct msgb *handle_rsip(struct mgcp_parse_data *p)
+{
+ if (p->found != 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to find the endpoint.\n");
+ return NULL;
+ }
+
+ if (p->cfg->reset_cb)
+ p->cfg->reset_cb(p->endp->tcfg);
+ return NULL;
+}
+
+static char extract_tone(const char *line)
+{
+ const char *str = strstr(line, "D/");
+ if (!str)
+ return CHAR_MAX;
+
+ return str[2];
+}
+
+/*
+ * This can request like DTMF detection and forward, fax detection... it
+ * can also request when the notification should be send and such. We don't
+ * do this right now.
+ */
+static struct msgb *handle_noti_req(struct mgcp_parse_data *p)
+{
+ int res = 0;
+ char *line;
+ char tone = CHAR_MAX;
+
+ if (p->found != 0)
+ return create_err_response(NULL, 400, "RQNT", p->trans);
+
+ for_each_line(line, p->save) {
+ switch (line[0]) {
+ case 'S':
+ tone = extract_tone(line);
+ break;
+ }
+ }
+
+ /* we didn't see a signal request with a tone */
+ if (tone == CHAR_MAX)
+ return create_ok_response(p->endp, 200, "RQNT", p->trans);
+
+ if (p->cfg->rqnt_cb)
+ res = p->cfg->rqnt_cb(p->endp, tone);
+
+ return res == 0 ?
+ create_ok_response(p->endp, 200, "RQNT", p->trans) :
+ create_err_response(p->endp, res, "RQNT", p->trans);
+}
+
+static void mgcp_keepalive_timer_cb(void *_tcfg)
+{
+ struct mgcp_trunk_config *tcfg = _tcfg;
+ int i;
+ LOGP(DLMGCP, LOGL_DEBUG, "Triggered trunk %d keepalive timer.\n",
+ tcfg->trunk_nr);
+
+ if (tcfg->keepalive_interval <= 0)
+ return;
+
+ for (i = 1; i < tcfg->number_endpoints; ++i) {
+ struct mgcp_endpoint *endp = &tcfg->endpoints[i];
+ if (endp->conn_mode == MGCP_CONN_RECV_ONLY)
+ send_dummy(endp);
+ }
+
+ LOGP(DLMGCP, LOGL_DEBUG, "Rescheduling trunk %d keepalive timer.\n",
+ tcfg->trunk_nr);
+ osmo_timer_schedule(&tcfg->keepalive_timer, tcfg->keepalive_interval, 0);
+}
+
+void mgcp_trunk_set_keepalive(struct mgcp_trunk_config *tcfg, int interval)
+{
+ tcfg->keepalive_interval = interval;
+ osmo_timer_setup(&tcfg->keepalive_timer, mgcp_keepalive_timer_cb, tcfg);
+
+ if (interval <= 0)
+ osmo_timer_del(&tcfg->keepalive_timer);
+ else
+ osmo_timer_schedule(&tcfg->keepalive_timer,
+ tcfg->keepalive_interval, 0);
+}
+
+struct mgcp_config *mgcp_config_alloc(void)
+{
+ struct mgcp_config *cfg;
+
+ cfg = talloc_zero(NULL, struct mgcp_config);
+ if (!cfg) {
+ LOGP(DLMGCP, LOGL_FATAL, "Failed to allocate config.\n");
+ return NULL;
+ }
+
+ cfg->source_port = 2427;
+ cfg->source_addr = talloc_strdup(cfg, "0.0.0.0");
+ cfg->osmux_addr = talloc_strdup(cfg, "0.0.0.0");
+
+ cfg->transcoder_remote_base = 4000;
+
+ cfg->bts_ports.base_port = RTP_PORT_DEFAULT;
+ cfg->net_ports.base_port = RTP_PORT_NET_DEFAULT;
+
+ cfg->rtp_processing_cb = &mgcp_rtp_processing_default;
+ cfg->setup_rtp_processing_cb = &mgcp_setup_rtp_processing_default;
+
+ cfg->get_net_downlink_format_cb = &mgcp_get_net_downlink_format_default;
+
+ /* default trunk handling */
+ cfg->trunk.cfg = cfg;
+ cfg->trunk.trunk_nr = 0;
+ cfg->trunk.trunk_type = MGCP_TRUNK_VIRTUAL;
+ cfg->trunk.audio_name = talloc_strdup(cfg, "AMR/8000");
+ cfg->trunk.audio_payload = 126;
+ cfg->trunk.audio_send_ptime = 1;
+ cfg->trunk.audio_send_name = 1;
+ cfg->trunk.omit_rtcp = 0;
+ mgcp_trunk_set_keepalive(&cfg->trunk, MGCP_KEEPALIVE_ONCE);
+
+ INIT_LLIST_HEAD(&cfg->trunks);
+
+ return cfg;
+}
+
+struct mgcp_trunk_config *mgcp_trunk_alloc(struct mgcp_config *cfg, int nr)
+{
+ struct mgcp_trunk_config *trunk;
+
+ trunk = talloc_zero(cfg, struct mgcp_trunk_config);
+ if (!trunk) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to allocate.\n");
+ return NULL;
+ }
+
+ trunk->cfg = cfg;
+ trunk->trunk_type = MGCP_TRUNK_E1;
+ trunk->trunk_nr = nr;
+ trunk->audio_name = talloc_strdup(cfg, "AMR/8000");
+ trunk->audio_payload = 126;
+ trunk->audio_send_ptime = 1;
+ trunk->audio_send_name = 1;
+ trunk->number_endpoints = 33;
+ trunk->omit_rtcp = 0;
+ mgcp_trunk_set_keepalive(trunk, MGCP_KEEPALIVE_ONCE);
+ llist_add_tail(&trunk->entry, &cfg->trunks);
+ return trunk;
+}
+
+struct mgcp_trunk_config *mgcp_trunk_num(struct mgcp_config *cfg, int index)
+{
+ struct mgcp_trunk_config *trunk;
+
+ llist_for_each_entry(trunk, &cfg->trunks, entry)
+ if (trunk->trunk_nr == index)
+ return trunk;
+
+ return NULL;
+}
+
+static void mgcp_rtp_codec_reset(struct mgcp_rtp_codec *codec)
+{
+ codec->payload_type = -1;
+ talloc_free(codec->subtype_name);
+ codec->subtype_name = NULL;
+ talloc_free(codec->audio_name);
+ codec->audio_name = NULL;
+ codec->frame_duration_num = DEFAULT_RTP_AUDIO_FRAME_DUR_NUM;
+ codec->frame_duration_den = DEFAULT_RTP_AUDIO_FRAME_DUR_DEN;
+ codec->rate = DEFAULT_RTP_AUDIO_DEFAULT_RATE;
+ codec->channels = DEFAULT_RTP_AUDIO_DEFAULT_CHANNELS;
+}
+
+static void mgcp_rtp_end_reset(struct mgcp_rtp_end *end)
+{
+ if (end->local_alloc == PORT_ALLOC_DYNAMIC) {
+ mgcp_free_rtp_port(end);
+ end->local_port = 0;
+ }
+
+ end->packets = 0;
+ end->octets = 0;
+ end->dropped_packets = 0;
+ memset(&end->addr, 0, sizeof(end->addr));
+ end->rtp_port = end->rtcp_port = 0;
+ end->local_alloc = -1;
+ talloc_free(end->fmtp_extra);
+ end->fmtp_extra = NULL;
+ talloc_free(end->rtp_process_data);
+ end->rtp_process_data = NULL;
+
+ /* Set default values */
+ end->frames_per_packet = 0; /* unknown */
+ end->packet_duration_ms = DEFAULT_RTP_AUDIO_PACKET_DURATION_MS;
+ end->output_enabled = 0;
+
+ mgcp_rtp_codec_reset(&end->codec);
+ mgcp_rtp_codec_reset(&end->alt_codec);
+}
+
+static void mgcp_rtp_end_init(struct mgcp_rtp_end *end)
+{
+ mgcp_rtp_end_reset(end);
+ end->rtp.fd = -1;
+ end->rtcp.fd = -1;
+}
+
+int mgcp_endpoints_allocate(struct mgcp_trunk_config *tcfg)
+{
+ int i;
+
+ /* Initialize all endpoints */
+ tcfg->endpoints = _talloc_zero_array(tcfg->cfg,
+ sizeof(struct mgcp_endpoint),
+ tcfg->number_endpoints, "endpoints");
+ if (!tcfg->endpoints)
+ return -1;
+
+ for (i = 0; i < tcfg->number_endpoints; ++i) {
+ tcfg->endpoints[i].osmux.allocated_cid = -1;
+ tcfg->endpoints[i].ci = CI_UNUSED;
+ tcfg->endpoints[i].cfg = tcfg->cfg;
+ tcfg->endpoints[i].tcfg = tcfg;
+ mgcp_rtp_end_init(&tcfg->endpoints[i].net_end);
+ mgcp_rtp_end_init(&tcfg->endpoints[i].bts_end);
+ mgcp_rtp_end_init(&tcfg->endpoints[i].trans_net);
+ mgcp_rtp_end_init(&tcfg->endpoints[i].trans_bts);
+ }
+
+ return 0;
+}
+
+void mgcp_release_endp(struct mgcp_endpoint *endp)
+{
+ LOGP(DLMGCP, LOGL_DEBUG, "Releasing endpoint on: 0x%x\n", ENDPOINT_NUMBER(endp));
+ endp->ci = CI_UNUSED;
+ endp->allocated = 0;
+
+ talloc_free(endp->callid);
+ endp->callid = NULL;
+
+ talloc_free(endp->local_options.string);
+ endp->local_options.string = NULL;
+ talloc_free(endp->local_options.codec);
+ endp->local_options.codec = NULL;
+
+ mgcp_rtp_end_reset(&endp->bts_end);
+ mgcp_rtp_end_reset(&endp->net_end);
+ mgcp_rtp_end_reset(&endp->trans_net);
+ mgcp_rtp_end_reset(&endp->trans_bts);
+ endp->type = MGCP_RTP_DEFAULT;
+
+ memset(&endp->net_state, 0, sizeof(endp->net_state));
+ memset(&endp->bts_state, 0, sizeof(endp->bts_state));
+
+ endp->conn_mode = endp->orig_mode = MGCP_CONN_NONE;
+
+ if (endp->osmux.state == OSMUX_STATE_ENABLED)
+ osmux_disable_endpoint(endp);
+
+ /* release the circuit ID if it had been allocated */
+ osmux_release_cid(endp);
+
+ memset(&endp->taps, 0, sizeof(endp->taps));
+}
+
+void mgcp_initialize_endp(struct mgcp_endpoint *endp)
+{
+ return mgcp_release_endp(endp);
+}
+
+static int send_trans(struct mgcp_config *cfg, const char *buf, int len)
+{
+ struct sockaddr_in addr;
+
+ memset(&addr, 0, sizeof(addr));
+ addr.sin_family = AF_INET;
+ addr.sin_addr = cfg->transcoder_in;
+ addr.sin_port = htons(2427);
+ return sendto(cfg->gw_fd.bfd.fd, buf, len, 0,
+ (struct sockaddr *) &addr, sizeof(addr));
+}
+
+static void send_msg(struct mgcp_endpoint *endp, int endpoint, int port,
+ const char *msg, const char *mode)
+{
+ char buf[2096];
+ int len;
+ int nchars;
+
+ /* hardcoded to AMR right now, we do not know the real type at this point */
+ len = snprintf(buf, sizeof(buf),
+ "%s 42 %x@mgw MGCP 1.0\r\n"
+ "C: 4256\r\n"
+ "M: %s\r\n"
+ "\r\n",
+ msg, endpoint, mode);
+
+ if (len < 0)
+ return;
+
+ nchars = write_response_sdp(endp, buf + len, sizeof(buf) + len - 1, NULL);
+ if (nchars < 0)
+ return;
+
+ len += nchars;
+
+ buf[sizeof(buf) - 1] = '\0';
+
+ send_trans(endp->cfg, buf, len);
+}
+
+static void send_dlcx(struct mgcp_endpoint *endp, int endpoint)
+{
+ char buf[2096];
+ int len;
+
+ len = snprintf(buf, sizeof(buf),
+ "DLCX 43 %x@mgw MGCP 1.0\r\n"
+ "C: 4256\r\n"
+ , endpoint);
+
+ if (len < 0)
+ return;
+
+ buf[sizeof(buf) - 1] = '\0';
+
+ send_trans(endp->cfg, buf, len);
+}
+
+static int send_agent(struct mgcp_config *cfg, const char *buf, int len)
+{
+ return write(cfg->gw_fd.bfd.fd, buf, len);
+}
+
+int mgcp_send_reset_all(struct mgcp_config *cfg)
+{
+ static const char mgcp_reset[] = {
+ "RSIP 1 *@mgw MGCP 1.0\r\n"
+ };
+
+ return send_agent(cfg, mgcp_reset, sizeof mgcp_reset -1);
+}
+
+int mgcp_send_reset_ep(struct mgcp_endpoint *endp, int endpoint)
+{
+ char buf[128];
+ int len;
+
+ len = snprintf(buf, sizeof(buf),
+ "RSIP 39 %x@mgw MGCP 1.0\r\n"
+ , endpoint);
+ if (len < 0)
+ return len;
+
+ buf[sizeof(buf) - 1] = '\0';
+
+ return send_agent(endp->cfg, buf, len);
+}
+
+static int setup_rtp_processing(struct mgcp_endpoint *endp)
+{
+ int rc = 0;
+ struct mgcp_config *cfg = endp->cfg;
+
+ if (endp->type != MGCP_RTP_DEFAULT)
+ return 0;
+
+ if (endp->conn_mode == MGCP_CONN_LOOPBACK)
+ return 0;
+
+ if (endp->conn_mode & MGCP_CONN_SEND_ONLY)
+ rc |= cfg->setup_rtp_processing_cb(endp, &endp->net_end, &endp->bts_end);
+ else
+ rc |= cfg->setup_rtp_processing_cb(endp, &endp->net_end, NULL);
+
+ if (endp->conn_mode & MGCP_CONN_RECV_ONLY)
+ rc |= cfg->setup_rtp_processing_cb(endp, &endp->bts_end, &endp->net_end);
+ else
+ rc |= cfg->setup_rtp_processing_cb(endp, &endp->bts_end, NULL);
+ return rc;
+}
+
+static void create_transcoder(struct mgcp_endpoint *endp)
+{
+ int port;
+ int in_endp = ENDPOINT_NUMBER(endp);
+ int out_endp = endp_back_channel(in_endp);
+
+ if (endp->type != MGCP_RTP_TRANSCODED)
+ return;
+
+ send_msg(endp, in_endp, endp->trans_bts.local_port, "CRCX", "sendrecv");
+ send_msg(endp, in_endp, endp->trans_bts.local_port, "MDCX", "sendrecv");
+ send_msg(endp, out_endp, endp->trans_net.local_port, "CRCX", "sendrecv");
+ send_msg(endp, out_endp, endp->trans_net.local_port, "MDCX", "sendrecv");
+
+ port = rtp_calculate_port(in_endp, endp->cfg->transcoder_remote_base);
+ endp->trans_bts.rtp_port = htons(port);
+ endp->trans_bts.rtcp_port = htons(port + 1);
+
+ port = rtp_calculate_port(out_endp, endp->cfg->transcoder_remote_base);
+ endp->trans_net.rtp_port = htons(port);
+ endp->trans_net.rtcp_port = htons(port + 1);
+}
+
+static void delete_transcoder(struct mgcp_endpoint *endp)
+{
+ int in_endp = ENDPOINT_NUMBER(endp);
+ int out_endp = endp_back_channel(in_endp);
+
+ if (endp->type != MGCP_RTP_TRANSCODED)
+ return;
+
+ send_dlcx(endp, in_endp);
+ send_dlcx(endp, out_endp);
+}
+
+int mgcp_reset_transcoder(struct mgcp_config *cfg)
+{
+ if (!cfg->transcoder_ip)
+ return 0;
+
+ static const char mgcp_reset[] = {
+ "RSIP 1 13@mgw MGCP 1.0\r\n"
+ };
+
+ return send_trans(cfg, mgcp_reset, sizeof mgcp_reset -1);
+}
+
+void mgcp_format_stats(struct mgcp_endpoint *endp, char *msg, size_t size)
+{
+ uint32_t expected, jitter;
+ int ploss;
+ int nchars;
+ mgcp_state_calc_loss(&endp->net_state, &endp->net_end,
+ &expected, &ploss);
+ jitter = mgcp_state_calc_jitter(&endp->net_state);
+
+ nchars = snprintf(msg, size,
+ "\r\nP: PS=%u, OS=%u, PR=%u, OR=%u, PL=%d, JI=%u",
+ endp->bts_end.packets, endp->bts_end.octets,
+ endp->net_end.packets, endp->net_end.octets,
+ ploss, jitter);
+ if (nchars < 0 || nchars >= size)
+ goto truncate;
+
+ msg += nchars;
+ size -= nchars;
+
+ /* Error Counter */
+ nchars = snprintf(msg, size,
+ "\r\nX-Osmo-CP: EC TIS=%u, TOS=%u, TIR=%u, TOR=%u",
+ endp->net_state.in_stream.err_ts_counter,
+ endp->net_state.out_stream.err_ts_counter,
+ endp->bts_state.in_stream.err_ts_counter,
+ endp->bts_state.out_stream.err_ts_counter);
+ if (nchars < 0 || nchars >= size)
+ goto truncate;
+
+ msg += nchars;
+ size -= nchars;
+
+ if (endp->osmux.state == OSMUX_STATE_ENABLED) {
+ snprintf(msg, size,
+ "\r\nX-Osmux-ST: CR=%u, BR=%u",
+ endp->osmux.stats.chunks,
+ endp->osmux.stats.octets);
+ }
+truncate:
+ msg[size - 1] = '\0';
+}
+
+int mgcp_parse_stats(struct msgb *msg, uint32_t *ps, uint32_t *os,
+ uint32_t *pr, uint32_t *_or, int *loss, uint32_t *jitter)
+{
+ char *line, *save;
+ int rc;
+
+ /* initialize with bad values */
+ *ps = *os = *pr = *_or = *jitter = UINT_MAX;
+ *loss = INT_MAX;
+
+
+ line = strtok_r((char *) msg->l2h, "\r\n", &save);
+ if (!line)
+ return -1;
+
+ /* this can only parse the message that is created above... */
+ for_each_non_empty_line(line, save) {
+ switch (line[0]) {
+ case 'P':
+ rc = sscanf(line, "P: PS=%u, OS=%u, PR=%u, OR=%u, PL=%d, JI=%u",
+ ps, os, pr, _or, loss, jitter);
+ return rc == 6 ? 0 : -1;
+ }
+ }
+
+ return -1;
+}
diff --git a/src/libosmo-legacy-mgcp/mgcp_sdp.c b/src/libosmo-legacy-mgcp/mgcp_sdp.c
new file mode 100644
index 0000000..055e1af
--- /dev/null
+++ b/src/libosmo-legacy-mgcp/mgcp_sdp.c
@@ -0,0 +1,305 @@
+/*
+ * Some SDP file parsing...
+ *
+ * (C) 2009-2015 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2014 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <osmocom/legacy_mgcp/mgcp.h>
+#include <osmocom/legacy_mgcp/mgcp_internal.h>
+
+#include <errno.h>
+
+struct sdp_rtp_map {
+ /* the type */
+ int payload_type;
+ /* null, static or later dynamic codec name */
+ char *codec_name;
+ /* A pointer to the original line for later parsing */
+ char *map_line;
+
+ int rate;
+ int channels;
+};
+
+int mgcp_set_audio_info(void *ctx, struct mgcp_rtp_codec *codec,
+ int payload_type, const char *audio_name)
+{
+ int rate = codec->rate;
+ int channels = codec->channels;
+ char audio_codec[64];
+
+ talloc_free(codec->subtype_name);
+ codec->subtype_name = NULL;
+ talloc_free(codec->audio_name);
+ codec->audio_name = NULL;
+
+ if (payload_type != PTYPE_UNDEFINED)
+ codec->payload_type = payload_type;
+
+ if (!audio_name) {
+ switch (payload_type) {
+ case 0: audio_name = "PCMU/8000/1"; break;
+ case 3: audio_name = "GSM/8000/1"; break;
+ case 8: audio_name = "PCMA/8000/1"; break;
+ case 18: audio_name = "G729/8000/1"; break;
+ default:
+ /* Payload type is unknown, don't change rate and
+ * channels. */
+ /* TODO: return value? */
+ return 0;
+ }
+ }
+
+ if (sscanf(audio_name, "%63[^/]/%d/%d",
+ audio_codec, &rate, &channels) < 1)
+ return -EINVAL;
+
+ codec->rate = rate;
+ codec->channels = channels;
+ codec->subtype_name = talloc_strdup(ctx, audio_codec);
+ codec->audio_name = talloc_strdup(ctx, audio_name);
+
+ if (!strcmp(audio_codec, "G729")) {
+ codec->frame_duration_num = 10;
+ codec->frame_duration_den = 1000;
+ } else {
+ codec->frame_duration_num = DEFAULT_RTP_AUDIO_FRAME_DUR_NUM;
+ codec->frame_duration_den = DEFAULT_RTP_AUDIO_FRAME_DUR_DEN;
+ }
+
+ if (payload_type < 0) {
+ payload_type = 96;
+ if (rate == 8000 && channels == 1) {
+ if (!strcmp(audio_codec, "GSM"))
+ payload_type = 3;
+ else if (!strcmp(audio_codec, "PCMA"))
+ payload_type = 8;
+ else if (!strcmp(audio_codec, "PCMU"))
+ payload_type = 0;
+ else if (!strcmp(audio_codec, "G729"))
+ payload_type = 18;
+ }
+
+ codec->payload_type = payload_type;
+ }
+
+ if (channels != 1)
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "Channels != 1 in SDP: '%s'\n", audio_name);
+
+ return 0;
+}
+
+void codecs_initialize(void *ctx, struct sdp_rtp_map *codecs, int used)
+{
+ int i;
+
+ for (i = 0; i < used; ++i) {
+ switch (codecs[i].payload_type) {
+ case 0:
+ codecs[i].codec_name = "PCMU";
+ codecs[i].rate = 8000;
+ codecs[i].channels = 1;
+ break;
+ case 3:
+ codecs[i].codec_name = "GSM";
+ codecs[i].rate = 8000;
+ codecs[i].channels = 1;
+ break;
+ case 8:
+ codecs[i].codec_name = "PCMA";
+ codecs[i].rate = 8000;
+ codecs[i].channels = 1;
+ break;
+ case 18:
+ codecs[i].codec_name = "G729";
+ codecs[i].rate = 8000;
+ codecs[i].channels = 1;
+ break;
+ }
+ }
+}
+
+void codecs_update(void *ctx, struct sdp_rtp_map *codecs, int used, int payload, char *audio_name)
+{
+ int i;
+
+ for (i = 0; i < used; ++i) {
+ char audio_codec[64];
+ int rate = -1;
+ int channels = -1;
+ if (codecs[i].payload_type != payload)
+ continue;
+ if (sscanf(audio_name, "%63[^/]/%d/%d",
+ audio_codec, &rate, &channels) < 1) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to parse '%s'\n", audio_name);
+ continue;
+ }
+
+ codecs[i].map_line = talloc_strdup(ctx, audio_name);
+ codecs[i].codec_name = talloc_strdup(ctx, audio_codec);
+ codecs[i].rate = rate;
+ codecs[i].channels = channels;
+ return;
+ }
+
+ LOGP(DLMGCP, LOGL_ERROR, "Unconfigured PT(%d) with %s\n", payload, audio_name);
+}
+
+int is_codec_compatible(struct mgcp_endpoint *endp, struct sdp_rtp_map *codec)
+{
+ char *bts_codec;
+ char audio_codec[64];
+
+ if (!codec->codec_name)
+ return 0;
+
+ /*
+ * GSM, GSM/8000 and GSM/8000/1 should all be compatible.. let's go
+ * by name first.
+ */
+ bts_codec = endp->tcfg->audio_name;
+ if (sscanf(bts_codec, "%63[^/]/%*d/%*d", audio_codec) < 1)
+ return 0;
+
+ return strcasecmp(audio_codec, codec->codec_name) == 0;
+}
+
+int mgcp_parse_sdp_data(struct mgcp_endpoint *endp, struct mgcp_rtp_end *rtp, struct mgcp_parse_data *p)
+{
+ struct sdp_rtp_map codecs[10];
+ int codecs_used = 0;
+ char *line;
+ int maxptime = -1;
+ int i;
+ int codecs_assigned = 0;
+ void *tmp_ctx = talloc_new(NULL);
+
+ memset(&codecs, 0, sizeof(codecs));
+
+ for_each_line(line, p->save) {
+ switch (line[0]) {
+ case 'o':
+ case 's':
+ case 't':
+ case 'v':
+ /* skip these SDP attributes */
+ break;
+ case 'a': {
+ int payload;
+ int ptime, ptime2 = 0;
+ char audio_name[64];
+
+
+ if (sscanf(line, "a=rtpmap:%d %63s",
+ &payload, audio_name) == 2) {
+ codecs_update(tmp_ctx, codecs, codecs_used, payload, audio_name);
+ } else if (sscanf(line, "a=ptime:%d-%d",
+ &ptime, &ptime2) >= 1) {
+ if (ptime2 > 0 && ptime2 != ptime)
+ rtp->packet_duration_ms = 0;
+ else
+ rtp->packet_duration_ms = ptime;
+ } else if (sscanf(line, "a=maxptime:%d", &ptime2) == 1) {
+ maxptime = ptime2;
+ }
+ break;
+ }
+ case 'm': {
+ int port, rc;
+
+ rc = sscanf(line, "m=audio %d RTP/AVP %d %d %d %d %d %d %d %d %d %d",
+ &port,
+ &codecs[0].payload_type,
+ &codecs[1].payload_type,
+ &codecs[2].payload_type,
+ &codecs[3].payload_type,
+ &codecs[4].payload_type,
+ &codecs[5].payload_type,
+ &codecs[6].payload_type,
+ &codecs[7].payload_type,
+ &codecs[8].payload_type,
+ &codecs[9].payload_type);
+ if (rc >= 2) {
+ rtp->rtp_port = htons(port);
+ rtp->rtcp_port = htons(port + 1);
+ codecs_used = rc - 1;
+ codecs_initialize(tmp_ctx, codecs, codecs_used);
+ }
+ break;
+ }
+ case 'c': {
+ char ipv4[16];
+
+ if (sscanf(line, "c=IN IP4 %15s", ipv4) == 1) {
+ inet_aton(ipv4, &rtp->addr);
+ }
+ break;
+ }
+ default:
+ if (p->endp)
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "Unhandled SDP option: '%c'/%d on 0x%x\n",
+ line[0], line[0], ENDPOINT_NUMBER(p->endp));
+ else
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "Unhandled SDP option: '%c'/%d\n",
+ line[0], line[0]);
+ break;
+ }
+ }
+
+ /* Now select the primary and alt_codec */
+ for (i = 0; i < codecs_used && codecs_assigned < 2; ++i) {
+ struct mgcp_rtp_codec *codec = codecs_assigned == 0 ?
+ &rtp->codec : &rtp->alt_codec;
+
+ if (endp->tcfg->no_audio_transcoding &&
+ !is_codec_compatible(endp, &codecs[i])) {
+ LOGP(DLMGCP, LOGL_NOTICE, "Skipping codec %s\n",
+ codecs[i].codec_name);
+ continue;
+ }
+
+ mgcp_set_audio_info(p->cfg, codec,
+ codecs[i].payload_type,
+ codecs[i].map_line);
+ codecs_assigned += 1;
+ }
+
+ if (codecs_assigned > 0) {
+ /* TODO/XXX: Store this per codec and derive it on use */
+ if (maxptime >= 0 && maxptime * rtp->codec.frame_duration_den >
+ rtp->codec.frame_duration_num * 1500) {
+ /* more than 1 frame */
+ rtp->packet_duration_ms = 0;
+ }
+
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "Got media info via SDP: port %d, payload %d (%s), "
+ "duration %d, addr %s\n",
+ ntohs(rtp->rtp_port), rtp->codec.payload_type,
+ rtp->codec.subtype_name ? rtp->codec.subtype_name : "unknown",
+ rtp->packet_duration_ms, inet_ntoa(rtp->addr));
+ }
+
+ talloc_free(tmp_ctx);
+ return codecs_assigned > 0;
+}
+
diff --git a/src/libosmo-legacy-mgcp/mgcp_transcode.c b/src/libosmo-legacy-mgcp/mgcp_transcode.c
new file mode 100644
index 0000000..cbabdd1
--- /dev/null
+++ b/src/libosmo-legacy-mgcp/mgcp_transcode.c
@@ -0,0 +1,611 @@
+/*
+ * (C) 2014 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+
+#include "g711common.h"
+
+#include <osmocom/legacy_mgcp/mgcp.h>
+#include <osmocom/legacy_mgcp/mgcp_internal.h>
+#include <osmocom/legacy_mgcp/mgcp_transcode.h>
+
+#include <osmocom/core/talloc.h>
+#include <osmocom/netif/rtp.h>
+
+int mgcp_transcoding_get_frame_size(void *state_, int nsamples, int dst)
+{
+ struct mgcp_process_rtp_state *state = state_;
+ if (dst)
+ return (nsamples >= 0 ?
+ nsamples / state->dst_samples_per_frame :
+ 1) * state->dst_frame_size;
+ else
+ return (nsamples >= 0 ?
+ nsamples / state->src_samples_per_frame :
+ 1) * state->src_frame_size;
+}
+
+static enum audio_format get_audio_format(const struct mgcp_rtp_codec *codec)
+{
+ if (codec->subtype_name) {
+ if (!strcasecmp("GSM", codec->subtype_name))
+ return AF_GSM;
+ if (!strcasecmp("PCMA", codec->subtype_name))
+ return AF_PCMA;
+ if (!strcasecmp("PCMU", codec->subtype_name))
+ return AF_PCMU;
+#ifdef HAVE_BCG729
+ if (!strcasecmp("G729", codec->subtype_name))
+ return AF_G729;
+#endif
+ if (!strcasecmp("L16", codec->subtype_name))
+ return AF_L16;
+ }
+
+ switch (codec->payload_type) {
+ case 0 /* PCMU */:
+ return AF_PCMU;
+ case 3 /* GSM */:
+ return AF_GSM;
+ case 8 /* PCMA */:
+ return AF_PCMA;
+#ifdef HAVE_BCG729
+ case 18 /* G.729 */:
+ return AF_G729;
+#endif
+ case 11 /* L16 */:
+ return AF_L16;
+ default:
+ return AF_INVALID;
+ }
+}
+
+static void l16_encode(short *sample, unsigned char *buf, size_t n)
+{
+ for (; n > 0; --n, ++sample, buf += 2) {
+ buf[0] = sample[0] >> 8;
+ buf[1] = sample[0] & 0xff;
+ }
+}
+
+static void l16_decode(unsigned char *buf, short *sample, size_t n)
+{
+ for (; n > 0; --n, ++sample, buf += 2)
+ sample[0] = ((short)buf[0] << 8) | buf[1];
+}
+
+static void alaw_encode(short *sample, unsigned char *buf, size_t n)
+{
+ for (; n > 0; --n)
+ *(buf++) = s16_to_alaw(*(sample++));
+}
+
+static void alaw_decode(unsigned char *buf, short *sample, size_t n)
+{
+ for (; n > 0; --n)
+ *(sample++) = alaw_to_s16(*(buf++));
+}
+
+static void ulaw_encode(short *sample, unsigned char *buf, size_t n)
+{
+ for (; n > 0; --n)
+ *(buf++) = s16_to_ulaw(*(sample++));
+}
+
+static void ulaw_decode(unsigned char *buf, short *sample, size_t n)
+{
+ for (; n > 0; --n)
+ *(sample++) = ulaw_to_s16(*(buf++));
+}
+
+static int processing_state_destructor(struct mgcp_process_rtp_state *state)
+{
+ switch (state->src_fmt) {
+ case AF_GSM:
+ if (state->src.gsm_handle)
+ gsm_destroy(state->src.gsm_handle);
+ break;
+#ifdef HAVE_BCG729
+ case AF_G729:
+ if (state->src.g729_dec)
+ closeBcg729DecoderChannel(state->src.g729_dec);
+ break;
+#endif
+ default:
+ break;
+ }
+ switch (state->dst_fmt) {
+ case AF_GSM:
+ if (state->dst.gsm_handle)
+ gsm_destroy(state->dst.gsm_handle);
+ break;
+#ifdef HAVE_BCG729
+ case AF_G729:
+ if (state->dst.g729_enc)
+ closeBcg729EncoderChannel(state->dst.g729_enc);
+ break;
+#endif
+ default:
+ break;
+ }
+ return 0;
+}
+
+int mgcp_transcoding_setup(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_end *dst_end,
+ struct mgcp_rtp_end *src_end)
+{
+ struct mgcp_process_rtp_state *state;
+ enum audio_format src_fmt, dst_fmt;
+ const struct mgcp_rtp_codec *dst_codec = &dst_end->codec;
+
+ /* cleanup first */
+ if (dst_end->rtp_process_data) {
+ talloc_free(dst_end->rtp_process_data);
+ dst_end->rtp_process_data = NULL;
+ }
+
+ if (!src_end)
+ return 0;
+
+ const struct mgcp_rtp_codec *src_codec = &src_end->codec;
+
+ if (endp->tcfg->no_audio_transcoding) {
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "Transcoding disabled on endpoint 0x%x\n",
+ ENDPOINT_NUMBER(endp));
+ return 0;
+ }
+
+ src_fmt = get_audio_format(src_codec);
+ dst_fmt = get_audio_format(dst_codec);
+
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Checking transcoding: %s (%d) -> %s (%d)\n",
+ src_codec->subtype_name, src_codec->payload_type,
+ dst_codec->subtype_name, dst_codec->payload_type);
+
+ if (src_fmt == AF_INVALID || dst_fmt == AF_INVALID) {
+ if (!src_codec->subtype_name || !dst_codec->subtype_name)
+ /* Not enough info, do nothing */
+ return 0;
+
+ if (strcasecmp(src_codec->subtype_name, dst_codec->subtype_name) == 0)
+ /* Nothing to do */
+ return 0;
+
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Cannot transcode: %s codec not supported (%s -> %s).\n",
+ src_fmt != AF_INVALID ? "destination" : "source",
+ src_codec->audio_name, dst_codec->audio_name);
+ return -EINVAL;
+ }
+
+ if (src_codec->rate && dst_codec->rate && src_codec->rate != dst_codec->rate) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Cannot transcode: rate conversion (%d -> %d) not supported.\n",
+ src_codec->rate, dst_codec->rate);
+ return -EINVAL;
+ }
+
+ state = talloc_zero(endp->tcfg->cfg, struct mgcp_process_rtp_state);
+ talloc_set_destructor(state, processing_state_destructor);
+ dst_end->rtp_process_data = state;
+
+ state->src_fmt = src_fmt;
+
+ switch (state->src_fmt) {
+ case AF_L16:
+ case AF_S16:
+ state->src_frame_size = 80 * sizeof(short);
+ state->src_samples_per_frame = 80;
+ break;
+ case AF_GSM:
+ state->src_frame_size = sizeof(gsm_frame);
+ state->src_samples_per_frame = 160;
+ state->src.gsm_handle = gsm_create();
+ if (!state->src.gsm_handle) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Failed to initialize GSM decoder.\n");
+ return -EINVAL;
+ }
+ break;
+#ifdef HAVE_BCG729
+ case AF_G729:
+ state->src_frame_size = 10;
+ state->src_samples_per_frame = 80;
+ state->src.g729_dec = initBcg729DecoderChannel();
+ if (!state->src.g729_dec) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Failed to initialize G.729 decoder.\n");
+ return -EINVAL;
+ }
+ break;
+#endif
+ case AF_PCMU:
+ case AF_PCMA:
+ state->src_frame_size = 80;
+ state->src_samples_per_frame = 80;
+ break;
+ default:
+ break;
+ }
+
+ state->dst_fmt = dst_fmt;
+
+ switch (state->dst_fmt) {
+ case AF_L16:
+ case AF_S16:
+ state->dst_frame_size = 80*sizeof(short);
+ state->dst_samples_per_frame = 80;
+ break;
+ case AF_GSM:
+ state->dst_frame_size = sizeof(gsm_frame);
+ state->dst_samples_per_frame = 160;
+ state->dst.gsm_handle = gsm_create();
+ if (!state->dst.gsm_handle) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Failed to initialize GSM encoder.\n");
+ return -EINVAL;
+ }
+ break;
+#ifdef HAVE_BCG729
+ case AF_G729:
+ state->dst_frame_size = 10;
+ state->dst_samples_per_frame = 80;
+ state->dst.g729_enc = initBcg729EncoderChannel();
+ if (!state->dst.g729_enc) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Failed to initialize G.729 decoder.\n");
+ return -EINVAL;
+ }
+ break;
+#endif
+ case AF_PCMU:
+ case AF_PCMA:
+ state->dst_frame_size = 80;
+ state->dst_samples_per_frame = 80;
+ break;
+ default:
+ break;
+ }
+
+ if (dst_end->force_output_ptime)
+ state->dst_packet_duration = mgcp_rtp_packet_duration(endp, dst_end);
+
+ LOGP(DLMGCP, LOGL_INFO,
+ "Initialized RTP processing on: 0x%x "
+ "conv: %d (%d, %d, %s) -> %d (%d, %d, %s)\n",
+ ENDPOINT_NUMBER(endp),
+ src_fmt, src_codec->payload_type, src_codec->rate, src_end->fmtp_extra,
+ dst_fmt, dst_codec->payload_type, dst_codec->rate, dst_end->fmtp_extra);
+
+ return 0;
+}
+
+void mgcp_transcoding_net_downlink_format(struct mgcp_endpoint *endp,
+ int *payload_type,
+ const char**audio_name,
+ const char**fmtp_extra)
+{
+ struct mgcp_process_rtp_state *state = endp->net_end.rtp_process_data;
+ struct mgcp_rtp_codec *net_codec = &endp->net_end.codec;
+ struct mgcp_rtp_codec *bts_codec = &endp->bts_end.codec;
+
+ if (!state || net_codec->payload_type < 0) {
+ *payload_type = bts_codec->payload_type;
+ *audio_name = bts_codec->audio_name;
+ *fmtp_extra = endp->bts_end.fmtp_extra;
+ return;
+ }
+
+ *payload_type = net_codec->payload_type;
+ *audio_name = net_codec->audio_name;
+ *fmtp_extra = endp->net_end.fmtp_extra;
+}
+
+static int decode_audio(struct mgcp_process_rtp_state *state,
+ uint8_t **src, size_t *nbytes)
+{
+ while (*nbytes >= state->src_frame_size) {
+ if (state->sample_cnt + state->src_samples_per_frame > ARRAY_SIZE(state->samples)) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Sample buffer too small: %zu > %zu.\n",
+ state->sample_cnt + state->src_samples_per_frame,
+ ARRAY_SIZE(state->samples));
+ return -ENOSPC;
+ }
+ switch (state->src_fmt) {
+ case AF_GSM:
+ if (gsm_decode(state->src.gsm_handle,
+ (gsm_byte *)*src, state->samples + state->sample_cnt) < 0) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Failed to decode GSM.\n");
+ return -EINVAL;
+ }
+ break;
+#ifdef HAVE_BCG729
+ case AF_G729:
+ bcg729Decoder(state->src.g729_dec, *src, 0, state->samples + state->sample_cnt);
+ break;
+#endif
+ case AF_PCMU:
+ ulaw_decode(*src, state->samples + state->sample_cnt,
+ state->src_samples_per_frame);
+ break;
+ case AF_PCMA:
+ alaw_decode(*src, state->samples + state->sample_cnt,
+ state->src_samples_per_frame);
+ break;
+ case AF_S16:
+ memmove(state->samples + state->sample_cnt, *src,
+ state->src_frame_size);
+ break;
+ case AF_L16:
+ l16_decode(*src, state->samples + state->sample_cnt,
+ state->src_samples_per_frame);
+ break;
+ default:
+ break;
+ }
+ *src += state->src_frame_size;
+ *nbytes -= state->src_frame_size;
+ state->sample_cnt += state->src_samples_per_frame;
+ }
+ return 0;
+}
+
+static int encode_audio(struct mgcp_process_rtp_state *state,
+ uint8_t *dst, size_t buf_size, size_t max_samples)
+{
+ int nbytes = 0;
+ size_t nsamples = 0;
+ /* Encode samples into dst */
+ while (nsamples + state->dst_samples_per_frame <= max_samples) {
+ if (nbytes + state->dst_frame_size > buf_size) {
+ if (nbytes > 0)
+ break;
+
+ /* Not even one frame fits into the buffer */
+ LOGP(DLMGCP, LOGL_INFO,
+ "Encoding (RTP) buffer too small: %zu > %zu.\n",
+ nbytes + state->dst_frame_size, buf_size);
+ return -ENOSPC;
+ }
+ switch (state->dst_fmt) {
+ case AF_GSM:
+ gsm_encode(state->dst.gsm_handle,
+ state->samples + state->sample_offs, dst);
+ break;
+#ifdef HAVE_BCG729
+ case AF_G729:
+ bcg729Encoder(state->dst.g729_enc,
+ state->samples + state->sample_offs, dst);
+ break;
+#endif
+ case AF_PCMU:
+ ulaw_encode(state->samples + state->sample_offs, dst,
+ state->src_samples_per_frame);
+ break;
+ case AF_PCMA:
+ alaw_encode(state->samples + state->sample_offs, dst,
+ state->src_samples_per_frame);
+ break;
+ case AF_S16:
+ memmove(dst, state->samples + state->sample_offs,
+ state->dst_frame_size);
+ break;
+ case AF_L16:
+ l16_encode(state->samples + state->sample_offs, dst,
+ state->src_samples_per_frame);
+ break;
+ default:
+ break;
+ }
+ dst += state->dst_frame_size;
+ nbytes += state->dst_frame_size;
+ state->sample_offs += state->dst_samples_per_frame;
+ nsamples += state->dst_samples_per_frame;
+ }
+ state->sample_cnt -= nsamples;
+ return nbytes;
+}
+
+static struct mgcp_rtp_end *source_for_dest(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_end *dst_end)
+{
+ if (&endp->bts_end == dst_end)
+ return &endp->net_end;
+ else if (&endp->net_end == dst_end)
+ return &endp->bts_end;
+ OSMO_ASSERT(0);
+}
+
+/*
+ * With some modems we get offered multiple codecs
+ * and we have selected one of them. It might not
+ * be the right one and we need to detect this with
+ * the first audio packets. One difficulty is that
+ * we patch the rtp payload type in place, so we
+ * need to discuss this.
+ */
+struct mgcp_process_rtp_state *check_transcode_state(
+ struct mgcp_endpoint *endp,
+ struct mgcp_rtp_end *dst_end,
+ struct rtp_hdr *rtp_hdr)
+{
+ struct mgcp_rtp_end *src_end;
+
+ /* Only deal with messages from net to bts */
+ if (&endp->bts_end != dst_end)
+ goto done;
+
+ src_end = source_for_dest(endp, dst_end);
+
+ /* Already patched */
+ if (rtp_hdr->payload_type == dst_end->codec.payload_type)
+ goto done;
+ /* The payload we expect */
+ if (rtp_hdr->payload_type == src_end->codec.payload_type)
+ goto done;
+ /* The matching alternate payload type? Then switch */
+ if (rtp_hdr->payload_type == src_end->alt_codec.payload_type) {
+ struct mgcp_config *cfg = endp->cfg;
+ struct mgcp_rtp_codec tmp_codec = src_end->alt_codec;
+ src_end->alt_codec = src_end->codec;
+ src_end->codec = tmp_codec;
+ cfg->setup_rtp_processing_cb(endp, &endp->net_end, &endp->bts_end);
+ cfg->setup_rtp_processing_cb(endp, &endp->bts_end, &endp->net_end);
+ }
+
+done:
+ return dst_end->rtp_process_data;
+}
+
+int mgcp_transcoding_process_rtp(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_end *dst_end,
+ char *data, int *len, int buf_size)
+{
+ struct mgcp_process_rtp_state *state;
+ const size_t rtp_hdr_size = sizeof(struct rtp_hdr);
+ struct rtp_hdr *rtp_hdr = (struct rtp_hdr *) data;
+ char *payload_data = (char *) &rtp_hdr->data[0];
+ int payload_len = *len - rtp_hdr_size;
+ uint8_t *src = (uint8_t *)payload_data;
+ uint8_t *dst = (uint8_t *)payload_data;
+ size_t nbytes = payload_len;
+ size_t nsamples;
+ size_t max_samples;
+ uint32_t ts_no;
+ int rc;
+
+ state = check_transcode_state(endp, dst_end, rtp_hdr);
+ if (!state)
+ return 0;
+
+ if (state->src_fmt == state->dst_fmt) {
+ if (!state->dst_packet_duration)
+ return 0;
+
+ /* TODO: repackage without transcoding */
+ }
+
+ /* If the remaining samples do not fit into a fixed ptime,
+ * a) discard them, if the next packet is much later
+ * b) add silence and * send it, if the current packet is not
+ * yet too late
+ * c) append the sample data, if the timestamp matches exactly
+ */
+
+ /* TODO: check payload type (-> G.711 comfort noise) */
+
+ if (payload_len > 0) {
+ ts_no = ntohl(rtp_hdr->timestamp);
+ if (!state->is_running) {
+ state->next_seq = ntohs(rtp_hdr->sequence);
+ state->next_time = ts_no;
+ state->is_running = 1;
+ }
+
+
+ if (state->sample_cnt > 0) {
+ int32_t delta = ts_no - state->next_time;
+ /* TODO: check sequence? reordering? packet loss? */
+
+ if (delta > state->sample_cnt) {
+ /* There is a time gap between the last packet
+ * and the current one. Just discard the
+ * partial data that is left in the buffer.
+ * TODO: This can be improved by adding silence
+ * instead if the delta is small enough.
+ */
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "0x%x dropping sample buffer due delta=%d sample_cnt=%zu\n",
+ ENDPOINT_NUMBER(endp), delta, state->sample_cnt);
+ state->sample_cnt = 0;
+ state->next_time = ts_no;
+ } else if (delta < 0) {
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "RTP time jumps backwards, delta = %d, "
+ "discarding buffered samples\n",
+ delta);
+ state->sample_cnt = 0;
+ state->sample_offs = 0;
+ return -EAGAIN;
+ }
+
+ /* Make sure the samples start without offset */
+ if (state->sample_offs && state->sample_cnt)
+ memmove(&state->samples[0],
+ &state->samples[state->sample_offs],
+ state->sample_cnt *
+ sizeof(state->samples[0]));
+ }
+
+ state->sample_offs = 0;
+
+ /* Append decoded audio to samples */
+ decode_audio(state, &src, &nbytes);
+
+ if (nbytes > 0)
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "Skipped audio frame in RTP packet: %zu octets\n",
+ nbytes);
+ } else
+ ts_no = state->next_time;
+
+ if (state->sample_cnt < state->dst_packet_duration)
+ return -EAGAIN;
+
+ max_samples =
+ state->dst_packet_duration ?
+ state->dst_packet_duration : state->sample_cnt;
+
+ nsamples = state->sample_cnt;
+
+ rc = encode_audio(state, dst, buf_size, max_samples);
+ /*
+ * There were no samples to encode?
+ * TODO: how does this work for comfort noise?
+ */
+ if (rc == 0)
+ return -ENOMSG;
+ /* Any other error during the encoding */
+ if (rc < 0)
+ return rc;
+
+ nsamples -= state->sample_cnt;
+
+ *len = rtp_hdr_size + rc;
+ rtp_hdr->sequence = htons(state->next_seq);
+ rtp_hdr->timestamp = htonl(ts_no);
+
+ state->next_seq += 1;
+ state->next_time = ts_no + nsamples;
+
+ /*
+ * XXX: At this point we should always have consumed
+ * samples. So doing OSMO_ASSERT(nsamples > 0) and returning
+ * rtp_hdr_size should be fine.
+ */
+ return nsamples ? rtp_hdr_size : 0;
+}
diff --git a/src/libosmo-legacy-mgcp/mgcp_vty.c b/src/libosmo-legacy-mgcp/mgcp_vty.c
new file mode 100644
index 0000000..7b11422
--- /dev/null
+++ b/src/libosmo-legacy-mgcp/mgcp_vty.c
@@ -0,0 +1,1553 @@
+/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
+/* The protocol implementation */
+
+/*
+ * (C) 2009-2014 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2011 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+#include <osmocom/core/talloc.h>
+
+#include <osmocom/legacy_mgcp/mgcp.h>
+#include <osmocom/legacy_mgcp/mgcp_internal.h>
+#include <osmocom/legacy_mgcp/vty.h>
+
+#include <string.h>
+
+#define RTCP_OMIT_STR "Drop RTCP packets in both directions\n"
+#define RTP_PATCH_STR "Modify RTP packet header in both directions\n"
+#define RTP_KEEPALIVE_STR "Send dummy UDP packet to net RTP destination\n"
+
+static struct mgcp_config *g_cfg = NULL;
+
+static struct mgcp_trunk_config *find_trunk(struct mgcp_config *cfg, int nr)
+{
+ struct mgcp_trunk_config *trunk;
+
+ if (nr == 0)
+ trunk = &cfg->trunk;
+ else
+ trunk = mgcp_trunk_num(cfg, nr);
+
+ return trunk;
+}
+
+/*
+ * vty code for mgcp below
+ */
+struct cmd_node mgcp_node = {
+ MGCP_NODE,
+ "%s(config-mgcp)# ",
+ 1,
+};
+
+struct cmd_node trunk_node = {
+ TRUNK_NODE,
+ "%s(config-mgcp-trunk)# ",
+ 1,
+};
+
+static int config_write_mgcp(struct vty *vty)
+{
+ vty_out(vty, "mgcp%s", VTY_NEWLINE);
+ if (g_cfg->local_ip)
+ vty_out(vty, " local ip %s%s", g_cfg->local_ip, VTY_NEWLINE);
+ if (g_cfg->bts_ip && strlen(g_cfg->bts_ip) != 0)
+ vty_out(vty, " bts ip %s%s", g_cfg->bts_ip, VTY_NEWLINE);
+ vty_out(vty, " bind ip %s%s", g_cfg->source_addr, VTY_NEWLINE);
+ vty_out(vty, " bind port %u%s", g_cfg->source_port, VTY_NEWLINE);
+
+ if (g_cfg->bts_ports.mode == PORT_ALLOC_STATIC)
+ vty_out(vty, " rtp bts-base %u%s", g_cfg->bts_ports.base_port, VTY_NEWLINE);
+ else
+ vty_out(vty, " rtp bts-range %u %u%s",
+ g_cfg->bts_ports.range_start, g_cfg->bts_ports.range_end, VTY_NEWLINE);
+ if (g_cfg->bts_ports.bind_addr)
+ vty_out(vty, " rtp bts-bind-ip %s%s", g_cfg->bts_ports.bind_addr, VTY_NEWLINE);
+
+ if (g_cfg->net_ports.mode == PORT_ALLOC_STATIC)
+ vty_out(vty, " rtp net-base %u%s", g_cfg->net_ports.base_port, VTY_NEWLINE);
+ else
+ vty_out(vty, " rtp net-range %u %u%s",
+ g_cfg->net_ports.range_start, g_cfg->net_ports.range_end, VTY_NEWLINE);
+ if (g_cfg->net_ports.bind_addr)
+ vty_out(vty, " rtp net-bind-ip %s%s", g_cfg->net_ports.bind_addr, VTY_NEWLINE);
+
+ vty_out(vty, " rtp ip-dscp %d%s", g_cfg->endp_dscp, VTY_NEWLINE);
+ if (g_cfg->trunk.keepalive_interval == MGCP_KEEPALIVE_ONCE)
+ vty_out(vty, " rtp keep-alive once%s", VTY_NEWLINE);
+ else if (g_cfg->trunk.keepalive_interval)
+ vty_out(vty, " rtp keep-alive %d%s",
+ g_cfg->trunk.keepalive_interval, VTY_NEWLINE);
+ else
+ vty_out(vty, " no rtp keep-alive%s", VTY_NEWLINE);
+
+ if (g_cfg->trunk.omit_rtcp)
+ vty_out(vty, " rtcp-omit%s", VTY_NEWLINE);
+ else
+ vty_out(vty, " no rtcp-omit%s", VTY_NEWLINE);
+ if (g_cfg->trunk.force_constant_ssrc || g_cfg->trunk.force_aligned_timing) {
+ vty_out(vty, " %srtp-patch ssrc%s",
+ g_cfg->trunk.force_constant_ssrc ? "" : "no ", VTY_NEWLINE);
+ vty_out(vty, " %srtp-patch timestamp%s",
+ g_cfg->trunk.force_aligned_timing ? "" : "no ", VTY_NEWLINE);
+ } else
+ vty_out(vty, " no rtp-patch%s", VTY_NEWLINE);
+ if (g_cfg->trunk.audio_payload != -1)
+ vty_out(vty, " sdp audio-payload number %d%s",
+ g_cfg->trunk.audio_payload, VTY_NEWLINE);
+ if (g_cfg->trunk.audio_name)
+ vty_out(vty, " sdp audio-payload name %s%s",
+ g_cfg->trunk.audio_name, VTY_NEWLINE);
+ if (g_cfg->trunk.audio_fmtp_extra)
+ vty_out(vty, " sdp audio fmtp-extra %s%s",
+ g_cfg->trunk.audio_fmtp_extra, VTY_NEWLINE);
+ vty_out(vty, " %ssdp audio-payload send-ptime%s",
+ g_cfg->trunk.audio_send_ptime ? "" : "no ", VTY_NEWLINE);
+ vty_out(vty, " %ssdp audio-payload send-name%s",
+ g_cfg->trunk.audio_send_name ? "" : "no ", VTY_NEWLINE);
+ vty_out(vty, " loop %u%s", !!g_cfg->trunk.audio_loop, VTY_NEWLINE);
+ vty_out(vty, " number endpoints %u%s", g_cfg->trunk.number_endpoints - 1, VTY_NEWLINE);
+ vty_out(vty, " %sallow-transcoding%s",
+ g_cfg->trunk.no_audio_transcoding ? "no " : "", VTY_NEWLINE);
+ if (g_cfg->call_agent_addr)
+ vty_out(vty, " call-agent ip %s%s", g_cfg->call_agent_addr, VTY_NEWLINE);
+ if (g_cfg->transcoder_ip)
+ vty_out(vty, " transcoder-mgw %s%s", g_cfg->transcoder_ip, VTY_NEWLINE);
+
+ if (g_cfg->transcoder_ports.mode == PORT_ALLOC_STATIC)
+ vty_out(vty, " rtp transcoder-base %u%s", g_cfg->transcoder_ports.base_port, VTY_NEWLINE);
+ else
+ vty_out(vty, " rtp transcoder-range %u %u%s",
+ g_cfg->transcoder_ports.range_start, g_cfg->transcoder_ports.range_end, VTY_NEWLINE);
+ if (g_cfg->bts_force_ptime > 0)
+ vty_out(vty, " rtp force-ptime %d%s", g_cfg->bts_force_ptime, VTY_NEWLINE);
+ vty_out(vty, " transcoder-remote-base %u%s", g_cfg->transcoder_remote_base, VTY_NEWLINE);
+
+ switch (g_cfg->osmux) {
+ case OSMUX_USAGE_ON:
+ vty_out(vty, " osmux on%s", VTY_NEWLINE);
+ break;
+ case OSMUX_USAGE_ONLY:
+ vty_out(vty, " osmux only%s", VTY_NEWLINE);
+ break;
+ case OSMUX_USAGE_OFF:
+ default:
+ vty_out(vty, " osmux off%s", VTY_NEWLINE);
+ break;
+ }
+ if (g_cfg->osmux) {
+ vty_out(vty, " osmux bind-ip %s%s",
+ g_cfg->osmux_addr, VTY_NEWLINE);
+ vty_out(vty, " osmux batch-factor %d%s",
+ g_cfg->osmux_batch, VTY_NEWLINE);
+ vty_out(vty, " osmux batch-size %u%s",
+ g_cfg->osmux_batch_size, VTY_NEWLINE);
+ vty_out(vty, " osmux port %u%s",
+ g_cfg->osmux_port, VTY_NEWLINE);
+ vty_out(vty, " osmux dummy %s%s",
+ g_cfg->osmux_dummy ? "on" : "off", VTY_NEWLINE);
+ }
+ return CMD_SUCCESS;
+}
+
+static void dump_rtp_end(const char *end_name, struct vty *vty,
+ struct mgcp_rtp_state *state, struct mgcp_rtp_end *end)
+{
+ struct mgcp_rtp_codec *codec = &end->codec;
+
+ vty_out(vty,
+ " %s%s"
+ " Timestamp Errs: %d->%d%s"
+ " Dropped Packets: %d%s"
+ " Payload Type: %d Rate: %u Channels: %d %s"
+ " Frame Duration: %u Frame Denominator: %u%s"
+ " FPP: %d Packet Duration: %u%s"
+ " FMTP-Extra: %s Audio-Name: %s Sub-Type: %s%s"
+ " Output-Enabled: %d Force-PTIME: %d%s",
+ end_name, VTY_NEWLINE,
+ state->in_stream.err_ts_counter,
+ state->out_stream.err_ts_counter, VTY_NEWLINE,
+ end->dropped_packets, VTY_NEWLINE,
+ codec->payload_type, codec->rate, codec->channels, VTY_NEWLINE,
+ codec->frame_duration_num, codec->frame_duration_den, VTY_NEWLINE,
+ end->frames_per_packet, end->packet_duration_ms, VTY_NEWLINE,
+ end->fmtp_extra, codec->audio_name, codec->subtype_name, VTY_NEWLINE,
+ end->output_enabled, end->force_output_ptime, VTY_NEWLINE);
+}
+
+static void dump_trunk(struct vty *vty, struct mgcp_trunk_config *cfg, int verbose)
+{
+ int i;
+
+ vty_out(vty, "%s trunk nr %d with %d endpoints:%s",
+ cfg->trunk_type == MGCP_TRUNK_VIRTUAL ? "Virtual" : "E1",
+ cfg->trunk_nr, cfg->number_endpoints - 1, VTY_NEWLINE);
+
+ if (!cfg->endpoints) {
+ vty_out(vty, "No endpoints allocated yet.%s", VTY_NEWLINE);
+ return;
+ }
+
+ for (i = 1; i < cfg->number_endpoints; ++i) {
+ struct mgcp_endpoint *endp = &cfg->endpoints[i];
+ vty_out(vty,
+ " Endpoint 0x%.2x: CI: %d net: %u/%u bts: %u/%u on %s "
+ "traffic received bts: %u remote: %u transcoder: %u/%u%s",
+ i, endp->ci,
+ ntohs(endp->net_end.rtp_port), ntohs(endp->net_end.rtcp_port),
+ ntohs(endp->bts_end.rtp_port), ntohs(endp->bts_end.rtcp_port),
+ inet_ntoa(endp->bts_end.addr),
+ endp->bts_end.packets, endp->net_end.packets,
+ endp->trans_net.packets, endp->trans_bts.packets,
+ VTY_NEWLINE);
+
+ if (verbose && endp->allocated) {
+ dump_rtp_end("Net->BTS", vty, &endp->bts_state, &endp->bts_end);
+ dump_rtp_end("BTS->Net", vty, &endp->net_state, &endp->net_end);
+ }
+ }
+}
+
+DEFUN(show_mcgp, show_mgcp_cmd,
+ "show mgcp [stats]",
+ SHOW_STR
+ "Display information about the MGCP Media Gateway\n"
+ "Include Statistics\n")
+{
+ struct mgcp_trunk_config *trunk;
+ int show_stats = argc >= 1;
+
+ dump_trunk(vty, &g_cfg->trunk, show_stats);
+
+ llist_for_each_entry(trunk, &g_cfg->trunks, entry)
+ dump_trunk(vty, trunk, show_stats);
+
+ if (g_cfg->osmux)
+ vty_out(vty, "Osmux used CID: %d%s", osmux_used_cid(), VTY_NEWLINE);
+
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp,
+ cfg_mgcp_cmd,
+ "mgcp",
+ "Configure the MGCP")
+{
+ vty->node = MGCP_NODE;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_local_ip,
+ cfg_mgcp_local_ip_cmd,
+ "local ip A.B.C.D",
+ "Local options for the SDP record\n"
+ IP_STR
+ "IPv4 Address to use in SDP record\n")
+{
+ osmo_talloc_replace_string(g_cfg, &g_cfg->local_ip, argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_bts_ip,
+ cfg_mgcp_bts_ip_cmd,
+ "bts ip A.B.C.D",
+ "BTS Audio source/destination options\n"
+ IP_STR
+ "IPv4 Address of the BTS\n")
+{
+ osmo_talloc_replace_string(g_cfg, &g_cfg->bts_ip, argv[0]);
+ inet_aton(g_cfg->bts_ip, &g_cfg->bts_in);
+ return CMD_SUCCESS;
+}
+
+#define BIND_STR "Listen/Bind related socket option\n"
+DEFUN(cfg_mgcp_bind_ip,
+ cfg_mgcp_bind_ip_cmd,
+ "bind ip A.B.C.D",
+ BIND_STR
+ IP_STR
+ "IPv4 Address to bind to\n")
+{
+ osmo_talloc_replace_string(g_cfg, &g_cfg->source_addr, argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_bind_port,
+ cfg_mgcp_bind_port_cmd,
+ "bind port <0-65534>",
+ BIND_STR
+ "Port information\n"
+ "UDP port to listen for MGCP messages\n")
+{
+ unsigned int port = atoi(argv[0]);
+ g_cfg->source_port = port;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_bind_early,
+ cfg_mgcp_bind_early_cmd,
+ "bind early (0|1)",
+ BIND_STR
+ "Bind local ports on start up\n"
+ "Bind on demand\n" "Bind on startup\n")
+{
+ vty_out(vty, "bind early is deprecated, remove it from the config.\n");
+ return CMD_WARNING;
+}
+
+static void parse_base(struct mgcp_port_range *range, const char **argv)
+{
+ unsigned int port = atoi(argv[0]);
+ range->mode = PORT_ALLOC_STATIC;
+ range->base_port = port;
+}
+
+static void parse_range(struct mgcp_port_range *range, const char **argv)
+{
+ range->mode = PORT_ALLOC_DYNAMIC;
+ range->range_start = atoi(argv[0]);
+ range->range_end = atoi(argv[1]);
+ range->last_port = g_cfg->bts_ports.range_start;
+}
+
+
+#define RTP_STR "RTP configuration\n"
+#define BTS_START_STR "First UDP port allocated for the BTS side\n"
+#define NET_START_STR "First UDP port allocated for the NET side\n"
+#define UDP_PORT_STR "UDP Port number\n"
+DEFUN(cfg_mgcp_rtp_bts_base_port,
+ cfg_mgcp_rtp_bts_base_port_cmd,
+ "rtp bts-base <0-65534>",
+ RTP_STR
+ BTS_START_STR
+ UDP_PORT_STR)
+{
+ parse_base(&g_cfg->bts_ports, argv);
+ return CMD_SUCCESS;
+}
+
+#define RANGE_START_STR "Start of the range of ports\n"
+#define RANGE_END_STR "End of the range of ports\n"
+DEFUN(cfg_mgcp_rtp_bts_range,
+ cfg_mgcp_rtp_bts_range_cmd,
+ "rtp bts-range <0-65534> <0-65534>",
+ RTP_STR "Range of ports to use for the BTS side\n"
+ RANGE_START_STR RANGE_END_STR)
+{
+ parse_range(&g_cfg->bts_ports, argv);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_net_range,
+ cfg_mgcp_rtp_net_range_cmd,
+ "rtp net-range <0-65534> <0-65534>",
+ RTP_STR "Range of ports to use for the NET side\n"
+ RANGE_START_STR RANGE_END_STR)
+{
+ parse_range(&g_cfg->net_ports, argv);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_net_base_port,
+ cfg_mgcp_rtp_net_base_port_cmd,
+ "rtp net-base <0-65534>",
+ RTP_STR NET_START_STR UDP_PORT_STR)
+{
+ parse_base(&g_cfg->net_ports, argv);
+ return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_mgcp_rtp_bts_base_port, cfg_mgcp_rtp_base_port_cmd,
+ "rtp base <0-65534>",
+ RTP_STR BTS_START_STR UDP_PORT_STR)
+
+DEFUN(cfg_mgcp_rtp_transcoder_range,
+ cfg_mgcp_rtp_transcoder_range_cmd,
+ "rtp transcoder-range <0-65534> <0-65534>",
+ RTP_STR "Range of ports to use for the Transcoder\n"
+ RANGE_START_STR RANGE_END_STR)
+{
+ parse_range(&g_cfg->transcoder_ports, argv);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_transcoder_base,
+ cfg_mgcp_rtp_transcoder_base_cmd,
+ "rtp transcoder-base <0-65534>",
+ RTP_STR "First UDP port allocated for the Transcoder side\n"
+ UDP_PORT_STR)
+{
+ parse_base(&g_cfg->transcoder_ports, argv);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_bts_bind_ip,
+ cfg_mgcp_rtp_bts_bind_ip_cmd,
+ "rtp bts-bind-ip A.B.C.D",
+ RTP_STR "Bind endpoints facing the BTS\n" "Address to bind to\n")
+{
+ osmo_talloc_replace_string(g_cfg, &g_cfg->bts_ports.bind_addr, argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_no_bts_bind_ip,
+ cfg_mgcp_rtp_no_bts_bind_ip_cmd,
+ "no rtp bts-bind-ip",
+ NO_STR RTP_STR "Bind endpoints facing the BTS\n" "Address to bind to\n")
+{
+ talloc_free(g_cfg->bts_ports.bind_addr);
+ g_cfg->bts_ports.bind_addr = NULL;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_net_bind_ip,
+ cfg_mgcp_rtp_net_bind_ip_cmd,
+ "rtp net-bind-ip A.B.C.D",
+ RTP_STR "Bind endpoints facing the Network\n" "Address to bind to\n")
+{
+ osmo_talloc_replace_string(g_cfg, &g_cfg->net_ports.bind_addr, argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_no_net_bind_ip,
+ cfg_mgcp_rtp_no_net_bind_ip_cmd,
+ "no rtp net-bind-ip",
+ NO_STR RTP_STR "Bind endpoints facing the Network\n" "Address to bind to\n")
+{
+ talloc_free(g_cfg->net_ports.bind_addr);
+ g_cfg->net_ports.bind_addr = NULL;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_ip_dscp,
+ cfg_mgcp_rtp_ip_dscp_cmd,
+ "rtp ip-dscp <0-255>",
+ RTP_STR
+ "Apply IP_TOS to the audio stream (including Osmux)\n" "The DSCP value\n")
+{
+ int dscp = atoi(argv[0]);
+ g_cfg->endp_dscp = dscp;
+ return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_mgcp_rtp_ip_dscp, cfg_mgcp_rtp_ip_tos_cmd,
+ "rtp ip-tos <0-255>",
+ RTP_STR
+ "Apply IP_TOS to the audio stream\n" "The DSCP value\n")
+
+#define FORCE_PTIME_STR "Force a fixed ptime for packets sent to the BTS"
+DEFUN(cfg_mgcp_rtp_force_ptime,
+ cfg_mgcp_rtp_force_ptime_cmd,
+ "rtp force-ptime (10|20|40)",
+ RTP_STR FORCE_PTIME_STR
+ "The required ptime (packet duration) in ms\n"
+ "10 ms\n20 ms\n40 ms\n")
+{
+ g_cfg->bts_force_ptime = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_rtp_force_ptime,
+ cfg_mgcp_no_rtp_force_ptime_cmd,
+ "no rtp force-ptime",
+ NO_STR RTP_STR FORCE_PTIME_STR)
+{
+ g_cfg->bts_force_ptime = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_sdp_fmtp_extra,
+ cfg_mgcp_sdp_fmtp_extra_cmd,
+ "sdp audio fmtp-extra .NAME",
+ "Add extra fmtp for the SDP file\n" "Audio\n" "Fmtp-extra\n"
+ "Extra Information\n")
+{
+ char *txt = argv_concat(argv, argc, 0);
+ if (!txt)
+ return CMD_WARNING;
+
+ osmo_talloc_replace_string(g_cfg, &g_cfg->trunk.audio_fmtp_extra, txt);
+ talloc_free(txt);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_allow_transcoding,
+ cfg_mgcp_allow_transcoding_cmd,
+ "allow-transcoding",
+ "Allow transcoding\n")
+{
+ g_cfg->trunk.no_audio_transcoding = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_allow_transcoding,
+ cfg_mgcp_no_allow_transcoding_cmd,
+ "no allow-transcoding",
+ NO_STR "Allow transcoding\n")
+{
+ g_cfg->trunk.no_audio_transcoding = 1;
+ return CMD_SUCCESS;
+}
+
+#define SDP_STR "SDP File related options\n"
+#define AUDIO_STR "Audio payload options\n"
+DEFUN(cfg_mgcp_sdp_payload_number,
+ cfg_mgcp_sdp_payload_number_cmd,
+ "sdp audio-payload number <0-255>",
+ SDP_STR AUDIO_STR
+ "Number\n" "Payload number\n")
+{
+ unsigned int payload = atoi(argv[0]);
+ g_cfg->trunk.audio_payload = payload;
+ return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_mgcp_sdp_payload_number, cfg_mgcp_sdp_payload_number_cmd_old,
+ "sdp audio payload number <0-255>",
+ SDP_STR AUDIO_STR AUDIO_STR "Number\n" "Payload number\n")
+
+
+DEFUN(cfg_mgcp_sdp_payload_name,
+ cfg_mgcp_sdp_payload_name_cmd,
+ "sdp audio-payload name NAME",
+ SDP_STR AUDIO_STR "Name\n" "Payload name\n")
+{
+ osmo_talloc_replace_string(g_cfg, &g_cfg->trunk.audio_name, argv[0]);
+ return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_mgcp_sdp_payload_name, cfg_mgcp_sdp_payload_name_cmd_old,
+ "sdp audio payload name NAME",
+ SDP_STR AUDIO_STR AUDIO_STR "Name\n" "Payload name\n")
+
+DEFUN(cfg_mgcp_sdp_payload_send_ptime,
+ cfg_mgcp_sdp_payload_send_ptime_cmd,
+ "sdp audio-payload send-ptime",
+ SDP_STR AUDIO_STR
+ "Send SDP ptime (packet duration) attribute\n")
+{
+ g_cfg->trunk.audio_send_ptime = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_sdp_payload_send_ptime,
+ cfg_mgcp_no_sdp_payload_send_ptime_cmd,
+ "no sdp audio-payload send-ptime",
+ NO_STR SDP_STR AUDIO_STR
+ "Send SDP ptime (packet duration) attribute\n")
+{
+ g_cfg->trunk.audio_send_ptime = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_sdp_payload_send_name,
+ cfg_mgcp_sdp_payload_send_name_cmd,
+ "sdp audio-payload send-name",
+ SDP_STR AUDIO_STR
+ "Send SDP rtpmap with the audio name\n")
+{
+ g_cfg->trunk.audio_send_name = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_sdp_payload_send_name,
+ cfg_mgcp_no_sdp_payload_send_name_cmd,
+ "no sdp audio-payload send-name",
+ NO_STR SDP_STR AUDIO_STR
+ "Send SDP rtpmap with the audio name\n")
+{
+ g_cfg->trunk.audio_send_name = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_loop,
+ cfg_mgcp_loop_cmd,
+ "loop (0|1)",
+ "Loop audio for all endpoints on main trunk\n"
+ "Don't Loop\n" "Loop\n")
+{
+ if (g_cfg->osmux) {
+ vty_out(vty, "Cannot use `loop' with `osmux'.%s", VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+ g_cfg->trunk.audio_loop = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_force_realloc,
+ cfg_mgcp_force_realloc_cmd,
+ "force-realloc (0|1)",
+ "Force endpoint reallocation when the endpoint is still seized\n"
+ "Don't force reallocation\n" "force reallocation\n")
+{
+ g_cfg->trunk.force_realloc = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_number_endp,
+ cfg_mgcp_number_endp_cmd,
+ "number endpoints <0-65534>",
+ "Number options\n" "Endpoints available\n" "Number endpoints\n")
+{
+ /* + 1 as we start counting at one */
+ g_cfg->trunk.number_endpoints = atoi(argv[0]) + 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_omit_rtcp,
+ cfg_mgcp_omit_rtcp_cmd,
+ "rtcp-omit",
+ RTCP_OMIT_STR)
+{
+ g_cfg->trunk.omit_rtcp = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_omit_rtcp,
+ cfg_mgcp_no_omit_rtcp_cmd,
+ "no rtcp-omit",
+ NO_STR RTCP_OMIT_STR)
+{
+ g_cfg->trunk.omit_rtcp = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_patch_rtp_ssrc,
+ cfg_mgcp_patch_rtp_ssrc_cmd,
+ "rtp-patch ssrc",
+ RTP_PATCH_STR
+ "Force a fixed SSRC\n"
+ )
+{
+ g_cfg->trunk.force_constant_ssrc = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_patch_rtp_ssrc,
+ cfg_mgcp_no_patch_rtp_ssrc_cmd,
+ "no rtp-patch ssrc",
+ NO_STR RTP_PATCH_STR
+ "Force a fixed SSRC\n"
+ )
+{
+ g_cfg->trunk.force_constant_ssrc = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_patch_rtp_ts,
+ cfg_mgcp_patch_rtp_ts_cmd,
+ "rtp-patch timestamp",
+ RTP_PATCH_STR
+ "Adjust RTP timestamp\n"
+ )
+{
+ g_cfg->trunk.force_aligned_timing = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_patch_rtp_ts,
+ cfg_mgcp_no_patch_rtp_ts_cmd,
+ "no rtp-patch timestamp",
+ NO_STR RTP_PATCH_STR
+ "Adjust RTP timestamp\n"
+ )
+{
+ g_cfg->trunk.force_aligned_timing = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_patch_rtp,
+ cfg_mgcp_no_patch_rtp_cmd,
+ "no rtp-patch",
+ NO_STR RTP_PATCH_STR)
+{
+ g_cfg->trunk.force_constant_ssrc = 0;
+ g_cfg->trunk.force_aligned_timing = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_keepalive,
+ cfg_mgcp_rtp_keepalive_cmd,
+ "rtp keep-alive <1-120>",
+ RTP_STR RTP_KEEPALIVE_STR
+ "Keep alive interval in secs\n"
+ )
+{
+ mgcp_trunk_set_keepalive(&g_cfg->trunk, atoi(argv[0]));
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_keepalive_once,
+ cfg_mgcp_rtp_keepalive_once_cmd,
+ "rtp keep-alive once",
+ RTP_STR RTP_KEEPALIVE_STR
+ "Send dummy packet only once after CRCX/MDCX\n"
+ )
+{
+ mgcp_trunk_set_keepalive(&g_cfg->trunk, MGCP_KEEPALIVE_ONCE);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_rtp_keepalive,
+ cfg_mgcp_no_rtp_keepalive_cmd,
+ "no rtp keep-alive",
+ NO_STR RTP_STR RTP_KEEPALIVE_STR
+ )
+{
+ mgcp_trunk_set_keepalive(&g_cfg->trunk, 0);
+ return CMD_SUCCESS;
+}
+
+
+
+#define CALL_AGENT_STR "Callagent information\n"
+DEFUN(cfg_mgcp_agent_addr,
+ cfg_mgcp_agent_addr_cmd,
+ "call-agent ip A.B.C.D",
+ CALL_AGENT_STR IP_STR
+ "IPv4 Address of the callagent\n")
+{
+ osmo_talloc_replace_string(g_cfg, &g_cfg->call_agent_addr, argv[0]);
+ return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_mgcp_agent_addr, cfg_mgcp_agent_addr_cmd_old,
+ "call agent ip A.B.C.D",
+ CALL_AGENT_STR CALL_AGENT_STR IP_STR
+ "IPv4 Address of the callagent\n")
+
+
+DEFUN(cfg_mgcp_transcoder,
+ cfg_mgcp_transcoder_cmd,
+ "transcoder-mgw A.B.C.D",
+ "Use a MGW to detranscoder RTP\n"
+ "The IP address of the MGW")
+{
+ osmo_talloc_replace_string(g_cfg, &g_cfg->transcoder_ip, argv[0]);
+ inet_aton(g_cfg->transcoder_ip, &g_cfg->transcoder_in);
+
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_transcoder,
+ cfg_mgcp_no_transcoder_cmd,
+ "no transcoder-mgw",
+ NO_STR "Disable the transcoding\n")
+{
+ if (g_cfg->transcoder_ip) {
+ LOGP(DLMGCP, LOGL_NOTICE, "Disabling transcoding on future calls.\n");
+ talloc_free(g_cfg->transcoder_ip);
+ g_cfg->transcoder_ip = NULL;
+ }
+
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_transcoder_remote_base,
+ cfg_mgcp_transcoder_remote_base_cmd,
+ "transcoder-remote-base <0-65534>",
+ "Set the base port for the transcoder\n" "The RTP base port on the transcoder")
+{
+ g_cfg->transcoder_remote_base = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_trunk, cfg_mgcp_trunk_cmd,
+ "trunk <1-64>",
+ "Configure a SS7 trunk\n" "Trunk Nr\n")
+{
+ struct mgcp_trunk_config *trunk;
+ int index = atoi(argv[0]);
+
+ trunk = mgcp_trunk_num(g_cfg, index);
+ if (!trunk)
+ trunk = mgcp_trunk_alloc(g_cfg, index);
+
+ if (!trunk) {
+ vty_out(vty, "%%Unable to allocate trunk %u.%s",
+ index, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ vty->node = TRUNK_NODE;
+ vty->index = trunk;
+ return CMD_SUCCESS;
+}
+
+static int config_write_trunk(struct vty *vty)
+{
+ struct mgcp_trunk_config *trunk;
+
+ llist_for_each_entry(trunk, &g_cfg->trunks, entry) {
+ vty_out(vty, " trunk %d%s", trunk->trunk_nr, VTY_NEWLINE);
+ vty_out(vty, " sdp audio-payload number %d%s",
+ trunk->audio_payload, VTY_NEWLINE);
+ vty_out(vty, " sdp audio-payload name %s%s",
+ trunk->audio_name, VTY_NEWLINE);
+ vty_out(vty, " %ssdp audio-payload send-ptime%s",
+ trunk->audio_send_ptime ? "" : "no ", VTY_NEWLINE);
+ vty_out(vty, " %ssdp audio-payload send-name%s",
+ trunk->audio_send_name ? "" : "no ", VTY_NEWLINE);
+
+ if (trunk->keepalive_interval == MGCP_KEEPALIVE_ONCE)
+ vty_out(vty, " rtp keep-alive once%s", VTY_NEWLINE);
+ else if (trunk->keepalive_interval)
+ vty_out(vty, " rtp keep-alive %d%s",
+ trunk->keepalive_interval, VTY_NEWLINE);
+ else
+ vty_out(vty, " no rtp keep-alive%s", VTY_NEWLINE);
+ vty_out(vty, " loop %d%s",
+ trunk->audio_loop, VTY_NEWLINE);
+ vty_out(vty, " force-realloc %d%s",
+ trunk->force_realloc, VTY_NEWLINE);
+ if (trunk->omit_rtcp)
+ vty_out(vty, " rtcp-omit%s", VTY_NEWLINE);
+ else
+ vty_out(vty, " no rtcp-omit%s", VTY_NEWLINE);
+ if (trunk->force_constant_ssrc || trunk->force_aligned_timing) {
+ vty_out(vty, " %srtp-patch ssrc%s",
+ trunk->force_constant_ssrc ? "" : "no ", VTY_NEWLINE);
+ vty_out(vty, " %srtp-patch timestamp%s",
+ trunk->force_aligned_timing ? "" : "no ", VTY_NEWLINE);
+ } else
+ vty_out(vty, " no rtp-patch%s", VTY_NEWLINE);
+ if (trunk->audio_fmtp_extra)
+ vty_out(vty, " sdp audio fmtp-extra %s%s",
+ trunk->audio_fmtp_extra, VTY_NEWLINE);
+ vty_out(vty, " %sallow-transcoding%s",
+ trunk->no_audio_transcoding ? "no " : "", VTY_NEWLINE);
+ }
+
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_sdp_fmtp_extra,
+ cfg_trunk_sdp_fmtp_extra_cmd,
+ "sdp audio fmtp-extra .NAME",
+ "Add extra fmtp for the SDP file\n" "Audio\n" "Fmtp-extra\n"
+ "Extra Information\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ char *txt = argv_concat(argv, argc, 0);
+ if (!txt)
+ return CMD_WARNING;
+
+ osmo_talloc_replace_string(g_cfg, &trunk->audio_fmtp_extra, txt);
+ talloc_free(txt);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_payload_number,
+ cfg_trunk_payload_number_cmd,
+ "sdp audio-payload number <0-255>",
+ SDP_STR AUDIO_STR "Number\n" "Payload Number\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ unsigned int payload = atoi(argv[0]);
+
+ trunk->audio_payload = payload;
+ return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_trunk_payload_number, cfg_trunk_payload_number_cmd_old,
+ "sdp audio payload number <0-255>",
+ SDP_STR AUDIO_STR AUDIO_STR "Number\n" "Payload Number\n")
+
+DEFUN(cfg_trunk_payload_name,
+ cfg_trunk_payload_name_cmd,
+ "sdp audio-payload name NAME",
+ SDP_STR AUDIO_STR "Payload\n" "Payload Name\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+
+ osmo_talloc_replace_string(g_cfg, &trunk->audio_name, argv[0]);
+ return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_trunk_payload_name, cfg_trunk_payload_name_cmd_old,
+ "sdp audio payload name NAME",
+ SDP_STR AUDIO_STR AUDIO_STR "Payload\n" "Payload Name\n")
+
+
+DEFUN(cfg_trunk_loop,
+ cfg_trunk_loop_cmd,
+ "loop (0|1)",
+ "Loop audio for all endpoints on this trunk\n"
+ "Don't Loop\n" "Loop\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+
+ if (g_cfg->osmux) {
+ vty_out(vty, "Cannot use `loop' with `osmux'.%s", VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+ trunk->audio_loop = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_sdp_payload_send_ptime,
+ cfg_trunk_sdp_payload_send_ptime_cmd,
+ "sdp audio-payload send-ptime",
+ SDP_STR AUDIO_STR
+ "Send SDP ptime (packet duration) attribute\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->audio_send_ptime = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_sdp_payload_send_ptime,
+ cfg_trunk_no_sdp_payload_send_ptime_cmd,
+ "no sdp audio-payload send-ptime",
+ NO_STR SDP_STR AUDIO_STR
+ "Send SDP ptime (packet duration) attribute\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->audio_send_ptime = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_sdp_payload_send_name,
+ cfg_trunk_sdp_payload_send_name_cmd,
+ "sdp audio-payload send-name",
+ SDP_STR AUDIO_STR
+ "Send SDP rtpmap with the audio name\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->audio_send_name = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_sdp_payload_send_name,
+ cfg_trunk_no_sdp_payload_send_name_cmd,
+ "no sdp audio-payload send-name",
+ NO_STR SDP_STR AUDIO_STR
+ "Send SDP rtpmap with the audio name\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->audio_send_name = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_omit_rtcp,
+ cfg_trunk_omit_rtcp_cmd,
+ "rtcp-omit",
+ RTCP_OMIT_STR)
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->omit_rtcp = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_omit_rtcp,
+ cfg_trunk_no_omit_rtcp_cmd,
+ "no rtcp-omit",
+ NO_STR RTCP_OMIT_STR)
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->omit_rtcp = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_patch_rtp_ssrc,
+ cfg_trunk_patch_rtp_ssrc_cmd,
+ "rtp-patch ssrc",
+ RTP_PATCH_STR
+ "Force a fixed SSRC\n"
+ )
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->force_constant_ssrc = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_patch_rtp_ssrc,
+ cfg_trunk_no_patch_rtp_ssrc_cmd,
+ "no rtp-patch ssrc",
+ NO_STR RTP_PATCH_STR
+ "Force a fixed SSRC\n"
+ )
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->force_constant_ssrc = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_patch_rtp_ts,
+ cfg_trunk_patch_rtp_ts_cmd,
+ "rtp-patch timestamp",
+ RTP_PATCH_STR
+ "Adjust RTP timestamp\n"
+ )
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->force_aligned_timing = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_patch_rtp_ts,
+ cfg_trunk_no_patch_rtp_ts_cmd,
+ "no rtp-patch timestamp",
+ NO_STR RTP_PATCH_STR
+ "Adjust RTP timestamp\n"
+ )
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->force_aligned_timing = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_patch_rtp,
+ cfg_trunk_no_patch_rtp_cmd,
+ "no rtp-patch",
+ NO_STR RTP_PATCH_STR)
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->force_constant_ssrc = 0;
+ trunk->force_aligned_timing = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_rtp_keepalive,
+ cfg_trunk_rtp_keepalive_cmd,
+ "rtp keep-alive <1-120>",
+ RTP_STR RTP_KEEPALIVE_STR
+ "Keep-alive interval in secs\n"
+ )
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ mgcp_trunk_set_keepalive(trunk, atoi(argv[0]));
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_rtp_keepalive_once,
+ cfg_trunk_rtp_keepalive_once_cmd,
+ "rtp keep-alive once",
+ RTP_STR RTP_KEEPALIVE_STR
+ "Send dummy packet only once after CRCX/MDCX\n"
+ )
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ mgcp_trunk_set_keepalive(trunk, MGCP_KEEPALIVE_ONCE);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_rtp_keepalive,
+ cfg_trunk_no_rtp_keepalive_cmd,
+ "no rtp keep-alive",
+ NO_STR RTP_STR RTP_KEEPALIVE_STR
+ )
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ mgcp_trunk_set_keepalive(trunk, 0);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_allow_transcoding,
+ cfg_trunk_allow_transcoding_cmd,
+ "allow-transcoding",
+ "Allow transcoding\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->no_audio_transcoding = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_allow_transcoding,
+ cfg_trunk_no_allow_transcoding_cmd,
+ "no allow-transcoding",
+ NO_STR "Allow transcoding\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->no_audio_transcoding = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(loop_endp,
+ loop_endp_cmd,
+ "loop-endpoint <0-64> NAME (0|1)",
+ "Loop a given endpoint\n" "Trunk number\n"
+ "The name in hex of the endpoint\n" "Disable the loop\n" "Enable the loop\n")
+{
+ struct mgcp_trunk_config *trunk;
+ struct mgcp_endpoint *endp;
+
+ trunk = find_trunk(g_cfg, atoi(argv[0]));
+ if (!trunk) {
+ vty_out(vty, "%%Trunk %d not found in the config.%s",
+ atoi(argv[0]), VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ if (!trunk->endpoints) {
+ vty_out(vty, "%%Trunk %d has no endpoints allocated.%s",
+ trunk->trunk_nr, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ int endp_no = strtoul(argv[1], NULL, 16);
+ if (endp_no < 1 || endp_no >= trunk->number_endpoints) {
+ vty_out(vty, "Loopback number %s/%d is invalid.%s",
+ argv[1], endp_no, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+
+ endp = &trunk->endpoints[endp_no];
+ int loop = atoi(argv[2]);
+
+ if (loop)
+ endp->conn_mode = MGCP_CONN_LOOPBACK;
+ else
+ endp->conn_mode = endp->orig_mode;
+
+ /* Handle it like a MDCX, switch on SSRC patching if enabled */
+ mgcp_rtp_end_config(endp, 1, &endp->bts_end);
+ mgcp_rtp_end_config(endp, 1, &endp->net_end);
+
+ return CMD_SUCCESS;
+}
+
+DEFUN(tap_call,
+ tap_call_cmd,
+ "tap-call <0-64> ENDPOINT (bts-in|bts-out|net-in|net-out) A.B.C.D <0-65534>",
+ "Forward data on endpoint to a different system\n" "Trunk number\n"
+ "The endpoint in hex\n"
+ "Forward the data coming from the bts\n"
+ "Forward the data coming from the bts leaving to the network\n"
+ "Forward the data coming from the net\n"
+ "Forward the data coming from the net leaving to the bts\n"
+ "destination IP of the data\n" "destination port\n")
+{
+ struct mgcp_rtp_tap *tap;
+ struct mgcp_trunk_config *trunk;
+ struct mgcp_endpoint *endp;
+ int port = 0;
+
+ trunk = find_trunk(g_cfg, atoi(argv[0]));
+ if (!trunk) {
+ vty_out(vty, "%%Trunk %d not found in the config.%s",
+ atoi(argv[0]), VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ if (!trunk->endpoints) {
+ vty_out(vty, "%%Trunk %d has no endpoints allocated.%s",
+ trunk->trunk_nr, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ int endp_no = strtoul(argv[1], NULL, 16);
+ if (endp_no < 1 || endp_no >= trunk->number_endpoints) {
+ vty_out(vty, "Endpoint number %s/%d is invalid.%s",
+ argv[1], endp_no, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ endp = &trunk->endpoints[endp_no];
+
+ if (strcmp(argv[2], "bts-in") == 0) {
+ port = MGCP_TAP_BTS_IN;
+ } else if (strcmp(argv[2], "bts-out") == 0) {
+ port = MGCP_TAP_BTS_OUT;
+ } else if (strcmp(argv[2], "net-in") == 0) {
+ port = MGCP_TAP_NET_IN;
+ } else if (strcmp(argv[2], "net-out") == 0) {
+ port = MGCP_TAP_NET_OUT;
+ } else {
+ vty_out(vty, "Unknown mode... tricked vty?%s", VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ tap = &endp->taps[port];
+ memset(&tap->forward, 0, sizeof(tap->forward));
+ inet_aton(argv[3], &tap->forward.sin_addr);
+ tap->forward.sin_port = htons(atoi(argv[4]));
+ tap->enabled = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(free_endp, free_endp_cmd,
+ "free-endpoint <0-64> NUMBER",
+ "Free the given endpoint\n" "Trunk number\n"
+ "Endpoint number in hex.\n")
+{
+ struct mgcp_trunk_config *trunk;
+ struct mgcp_endpoint *endp;
+
+ trunk = find_trunk(g_cfg, atoi(argv[0]));
+ if (!trunk) {
+ vty_out(vty, "%%Trunk %d not found in the config.%s",
+ atoi(argv[0]), VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ if (!trunk->endpoints) {
+ vty_out(vty, "%%Trunk %d has no endpoints allocated.%s",
+ trunk->trunk_nr, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ int endp_no = strtoul(argv[1], NULL, 16);
+ if (endp_no < 1 || endp_no >= trunk->number_endpoints) {
+ vty_out(vty, "Endpoint number %s/%d is invalid.%s",
+ argv[1], endp_no, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ endp = &trunk->endpoints[endp_no];
+ mgcp_release_endp(endp);
+ return CMD_SUCCESS;
+}
+
+DEFUN(reset_endp, reset_endp_cmd,
+ "reset-endpoint <0-64> NUMBER",
+ "Reset the given endpoint\n" "Trunk number\n"
+ "Endpoint number in hex.\n")
+{
+ struct mgcp_trunk_config *trunk;
+ struct mgcp_endpoint *endp;
+ int endp_no, rc;
+
+ trunk = find_trunk(g_cfg, atoi(argv[0]));
+ if (!trunk) {
+ vty_out(vty, "%%Trunk %d not found in the config.%s",
+ atoi(argv[0]), VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ if (!trunk->endpoints) {
+ vty_out(vty, "%%Trunk %d has no endpoints allocated.%s",
+ trunk->trunk_nr, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ endp_no = strtoul(argv[1], NULL, 16);
+ if (endp_no < 1 || endp_no >= trunk->number_endpoints) {
+ vty_out(vty, "Endpoint number %s/%d is invalid.%s",
+ argv[1], endp_no, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ endp = &trunk->endpoints[endp_no];
+ rc = mgcp_send_reset_ep(endp, ENDPOINT_NUMBER(endp));
+ if (rc < 0) {
+ vty_out(vty, "Error %d sending reset.%s", rc, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+ return CMD_SUCCESS;
+}
+
+DEFUN(reset_all_endp, reset_all_endp_cmd,
+ "reset-all-endpoints",
+ "Reset all endpoints\n")
+{
+ int rc;
+
+ rc = mgcp_send_reset_all(g_cfg);
+ if (rc < 0) {
+ vty_out(vty, "Error %d during endpoint reset.%s",
+ rc, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+ return CMD_SUCCESS;
+}
+
+#define OSMUX_STR "RTP multiplexing\n"
+DEFUN(cfg_mgcp_osmux,
+ cfg_mgcp_osmux_cmd,
+ "osmux (on|off|only)",
+ OSMUX_STR "Enable OSMUX\n" "Disable OSMUX\n" "Only use OSMUX\n")
+{
+ if (strcmp(argv[0], "off") == 0) {
+ g_cfg->osmux = OSMUX_USAGE_OFF;
+ return CMD_SUCCESS;
+ }
+
+ if (strcmp(argv[0], "on") == 0)
+ g_cfg->osmux = OSMUX_USAGE_ON;
+ else if (strcmp(argv[0], "only") == 0)
+ g_cfg->osmux = OSMUX_USAGE_ONLY;
+
+ if (g_cfg->trunk.audio_loop) {
+ vty_out(vty, "Cannot use `loop' with `osmux'.%s",
+ VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_osmux_ip,
+ cfg_mgcp_osmux_ip_cmd,
+ "osmux bind-ip A.B.C.D",
+ OSMUX_STR IP_STR "IPv4 Address to bind to\n")
+{
+ osmo_talloc_replace_string(g_cfg, &g_cfg->osmux_addr, argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_osmux_batch_factor,
+ cfg_mgcp_osmux_batch_factor_cmd,
+ "osmux batch-factor <1-8>",
+ OSMUX_STR "Batching factor\n" "Number of messages in the batch\n")
+{
+ g_cfg->osmux_batch = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_osmux_batch_size,
+ cfg_mgcp_osmux_batch_size_cmd,
+ "osmux batch-size <1-65535>",
+ OSMUX_STR "batch size\n" "Batch size in bytes\n")
+{
+ g_cfg->osmux_batch_size = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_osmux_port,
+ cfg_mgcp_osmux_port_cmd,
+ "osmux port <1-65535>",
+ OSMUX_STR "port\n" "UDP port\n")
+{
+ g_cfg->osmux_port = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_osmux_dummy,
+ cfg_mgcp_osmux_dummy_cmd,
+ "osmux dummy (on|off)",
+ OSMUX_STR "Dummy padding\n" "Enable dummy padding\n" "Disable dummy padding\n")
+{
+ if (strcmp(argv[0], "on") == 0)
+ g_cfg->osmux_dummy = 1;
+ else if (strcmp(argv[0], "off") == 0)
+ g_cfg->osmux_dummy = 0;
+
+ return CMD_SUCCESS;
+}
+
+int mgcp_vty_init(void)
+{
+ install_element_ve(&show_mgcp_cmd);
+ install_element(ENABLE_NODE, &loop_endp_cmd);
+ install_element(ENABLE_NODE, &tap_call_cmd);
+ install_element(ENABLE_NODE, &free_endp_cmd);
+ install_element(ENABLE_NODE, &reset_endp_cmd);
+ install_element(ENABLE_NODE, &reset_all_endp_cmd);
+
+ install_element(CONFIG_NODE, &cfg_mgcp_cmd);
+ install_node(&mgcp_node, config_write_mgcp);
+
+ install_element(MGCP_NODE, &cfg_mgcp_local_ip_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_bts_ip_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_bind_ip_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_bind_port_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_bind_early_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_base_port_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_bts_base_port_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_net_base_port_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_bts_range_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_bts_bind_ip_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_no_bts_bind_ip_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_net_range_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_net_bind_ip_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_no_net_bind_ip_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_transcoder_range_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_transcoder_base_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_ip_dscp_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_ip_tos_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_force_ptime_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_no_rtp_force_ptime_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_keepalive_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_keepalive_once_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_no_rtp_keepalive_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_agent_addr_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_agent_addr_cmd_old);
+ install_element(MGCP_NODE, &cfg_mgcp_transcoder_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_no_transcoder_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_transcoder_remote_base_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_number_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_name_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_number_cmd_old);
+ install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_name_cmd_old);
+ install_element(MGCP_NODE, &cfg_mgcp_loop_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_force_realloc_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_number_endp_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_omit_rtcp_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_no_omit_rtcp_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_patch_rtp_ssrc_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_no_patch_rtp_ssrc_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_patch_rtp_ts_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_no_patch_rtp_ts_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_no_patch_rtp_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_sdp_fmtp_extra_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_send_ptime_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_no_sdp_payload_send_ptime_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_send_name_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_no_sdp_payload_send_name_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_osmux_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_osmux_ip_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_osmux_batch_factor_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_osmux_batch_size_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_osmux_port_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_osmux_dummy_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_allow_transcoding_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_no_allow_transcoding_cmd);
+
+
+ install_element(MGCP_NODE, &cfg_mgcp_trunk_cmd);
+ install_node(&trunk_node, config_write_trunk);
+ install_element(TRUNK_NODE, &cfg_trunk_rtp_keepalive_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_rtp_keepalive_once_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_no_rtp_keepalive_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_payload_number_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_payload_name_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_payload_number_cmd_old);
+ install_element(TRUNK_NODE, &cfg_trunk_payload_name_cmd_old);
+ install_element(TRUNK_NODE, &cfg_trunk_loop_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_omit_rtcp_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_no_omit_rtcp_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_patch_rtp_ssrc_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_no_patch_rtp_ssrc_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_patch_rtp_ts_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_no_patch_rtp_ts_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_no_patch_rtp_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_sdp_fmtp_extra_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_sdp_payload_send_ptime_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_no_sdp_payload_send_ptime_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_sdp_payload_send_name_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_no_sdp_payload_send_name_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_allow_transcoding_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_no_allow_transcoding_cmd);
+
+ return 0;
+}
+
+static int allocate_trunk(struct mgcp_trunk_config *trunk)
+{
+ int i;
+ struct mgcp_config *cfg = trunk->cfg;
+
+ if (mgcp_endpoints_allocate(trunk) != 0) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Failed to allocate %d endpoints on trunk %d.\n",
+ trunk->number_endpoints, trunk->trunk_nr);
+ return -1;
+ }
+
+ /* early bind */
+ for (i = 1; i < trunk->number_endpoints; ++i) {
+ struct mgcp_endpoint *endp = &trunk->endpoints[i];
+
+ if (cfg->bts_ports.mode == PORT_ALLOC_STATIC) {
+ cfg->last_bts_port += 2;
+ if (mgcp_bind_bts_rtp_port(endp, cfg->last_bts_port) != 0) {
+ LOGP(DLMGCP, LOGL_FATAL,
+ "Failed to bind: %d\n", cfg->last_bts_port);
+ return -1;
+ }
+ endp->bts_end.local_alloc = PORT_ALLOC_STATIC;
+ }
+
+ if (cfg->net_ports.mode == PORT_ALLOC_STATIC) {
+ cfg->last_net_port += 2;
+ if (mgcp_bind_net_rtp_port(endp, cfg->last_net_port) != 0) {
+ LOGP(DLMGCP, LOGL_FATAL,
+ "Failed to bind: %d\n", cfg->last_net_port);
+ return -1;
+ }
+ endp->net_end.local_alloc = PORT_ALLOC_STATIC;
+ }
+
+ if (trunk->trunk_type == MGCP_TRUNK_VIRTUAL &&
+ cfg->transcoder_ip && cfg->transcoder_ports.mode == PORT_ALLOC_STATIC) {
+ int rtp_port;
+
+ /* network side */
+ rtp_port = rtp_calculate_port(ENDPOINT_NUMBER(endp),
+ cfg->transcoder_ports.base_port);
+ if (mgcp_bind_trans_net_rtp_port(endp, rtp_port) != 0) {
+ LOGP(DLMGCP, LOGL_FATAL, "Failed to bind: %d\n", rtp_port);
+ return -1;
+ }
+ endp->trans_net.local_alloc = PORT_ALLOC_STATIC;
+
+ /* bts side */
+ rtp_port = rtp_calculate_port(endp_back_channel(ENDPOINT_NUMBER(endp)),
+ cfg->transcoder_ports.base_port);
+ if (mgcp_bind_trans_bts_rtp_port(endp, rtp_port) != 0) {
+ LOGP(DLMGCP, LOGL_FATAL, "Failed to bind: %d\n", rtp_port);
+ return -1;
+ }
+ endp->trans_bts.local_alloc = PORT_ALLOC_STATIC;
+ }
+ }
+
+ return 0;
+}
+
+int mgcp_parse_config(const char *config_file, struct mgcp_config *cfg,
+ enum mgcp_role role)
+{
+ int rc;
+ struct mgcp_trunk_config *trunk;
+
+ cfg->osmux_port = OSMUX_PORT;
+ cfg->osmux_batch = 4;
+ cfg->osmux_batch_size = OSMUX_BATCH_DEFAULT_MAX;
+
+ g_cfg = cfg;
+ rc = vty_read_config_file(config_file, NULL);
+ if (rc < 0) {
+ fprintf(stderr, "Failed to parse the config file: '%s'\n", config_file);
+ return rc;
+ }
+
+
+ if (!g_cfg->bts_ip)
+ fprintf(stderr, "No BTS ip address specified. This will allow everyone to connect.\n");
+
+ if (!g_cfg->source_addr) {
+ fprintf(stderr, "You need to specify a bind address.\n");
+ return -1;
+ }
+
+ /* initialize the last ports */
+ g_cfg->last_bts_port = rtp_calculate_port(0, g_cfg->bts_ports.base_port);
+ g_cfg->last_net_port = rtp_calculate_port(0, g_cfg->net_ports.base_port);
+
+ if (allocate_trunk(&g_cfg->trunk) != 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to initialize the virtual trunk.\n");
+ return -1;
+ }
+
+ llist_for_each_entry(trunk, &g_cfg->trunks, entry) {
+ if (allocate_trunk(trunk) != 0) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Failed to initialize E1 trunk %d.\n", trunk->trunk_nr);
+ return -1;
+ }
+ }
+ cfg->role = role;
+
+ return 0;
+}
+
diff --git a/src/libosmo-mgcp-client/Makefile.am b/src/libosmo-mgcp-client/Makefile.am
new file mode 100644
index 0000000..1e4e764
--- /dev/null
+++ b/src/libosmo-mgcp-client/Makefile.am
@@ -0,0 +1,34 @@
+AM_CPPFLAGS = \
+ $(all_includes) \
+ -I$(top_srcdir)/include \
+ -I$(top_builddir)/include \
+ -I$(top_builddir) \
+ $(NULL)
+
+AM_CFLAGS = \
+ -Wall \
+ $(LIBOSMOCORE_CFLAGS) \
+ $(LIBOSMOVTY_CFLAGS) \
+ $(COVERAGE_CFLAGS) \
+ $(NULL)
+
+AM_LDFLAGS = \
+ $(LIBOSMOCORE_LIBS) \
+ $(LIBOSMOVTY_LIBS) \
+ $(COVERAGE_LDFLAGS) \
+ $(NULL)
+
+# This is not at all related to the release version, but a range of supported
+# API versions. Read TODO_RELEASE in the source tree's root!
+MGCP_CLIENT_LIBVERSION=2:0:0
+
+lib_LTLIBRARIES = \
+ libosmo-mgcp-client.la \
+ $(NULL)
+
+libosmo_mgcp_client_la_SOURCES = \
+ mgcp_client.c \
+ mgcp_client_vty.c \
+ $(NULL)
+
+libosmo_mgcp_client_la_LDFLAGS = $(AM_LDFLAGS) -version-info $(MGCP_CLIENT_LIBVERSION)
diff --git a/src/libosmo-mgcp-client/mgcp_client.c b/src/libosmo-mgcp-client/mgcp_client.c
new file mode 100644
index 0000000..f8c55ac
--- /dev/null
+++ b/src/libosmo-mgcp-client/mgcp_client.c
@@ -0,0 +1,766 @@
+/* mgcp_utils - common functions to setup an MGCP connection
+ */
+/* (C) 2016 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <osmocom/core/linuxlist.h>
+#include <osmocom/core/select.h>
+#include <osmocom/core/write_queue.h>
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/logging.h>
+#include <osmocom/core/byteswap.h>
+
+#include <osmocom/mgcp_client/mgcp_client.h>
+#include <osmocom/mgcp_client/mgcp_client_internal.h>
+
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include <errno.h>
+#include <unistd.h>
+#include <string.h>
+
+void mgcp_client_conf_init(struct mgcp_client_conf *conf)
+{
+ /* NULL and -1 default to MGCP_CLIENT_*_DEFAULT values */
+ *conf = (struct mgcp_client_conf){
+ .local_addr = NULL,
+ .local_port = -1,
+ .remote_addr = NULL,
+ .remote_port = -1,
+ .first_endpoint = 0,
+ .last_endpoint = 0,
+ .bts_base = 0,
+ };
+}
+
+/* Test if a given endpoint id is currently in use */
+static bool endpoint_in_use(uint16_t id, struct mgcp_client *client)
+{
+ struct mgcp_inuse_endpoint *endpoint;
+ llist_for_each_entry(endpoint, &client->inuse_endpoints, entry) {
+ if (endpoint->id == id)
+ return true;
+ }
+
+ return false;
+}
+
+/* Find and seize an unsused endpoint id */
+int mgcp_client_next_endpoint(struct mgcp_client *client)
+{
+ int i;
+ uint16_t first_endpoint = client->actual.first_endpoint;
+ uint16_t last_endpoint = client->actual.last_endpoint;
+ struct mgcp_inuse_endpoint *endpoint;
+
+ /* Use the maximum permitted range if the VTY
+ * configuration does not specify a range */
+ if (client->actual.last_endpoint == 0) {
+ first_endpoint = 1;
+ last_endpoint = 65534;
+ }
+
+ /* Test the permitted endpoint range for an endpoint
+ * number that is not in use. When a suitable endpoint
+ * number can be found, seize it by adding it to the
+ * inuse list. */
+ for (i=first_endpoint;i<last_endpoint;i++)
+ {
+ if (endpoint_in_use(i,client) == false) {
+ endpoint = talloc_zero(client, struct mgcp_inuse_endpoint);
+ endpoint->id = i;
+ llist_add_tail(&endpoint->entry, &client->inuse_endpoints);
+ return endpoint->id;
+ }
+ }
+
+ /* All endpoints are busy! */
+ return -EINVAL;
+}
+
+/* Release a seized endpoint id to make it available again for other calls */
+void mgcp_client_release_endpoint(uint16_t id, struct mgcp_client *client)
+{
+ struct mgcp_inuse_endpoint *endpoint;
+ struct mgcp_inuse_endpoint *endpoint_tmp;
+ llist_for_each_entry_safe(endpoint, endpoint_tmp, &client->inuse_endpoints, entry) {
+ if (endpoint->id == id) {
+ llist_del(&endpoint->entry);
+ talloc_free(endpoint);
+ }
+ }
+}
+
+static void mgcp_client_handle_response(struct mgcp_client *mgcp,
+ struct mgcp_response_pending *pending,
+ struct mgcp_response *response)
+{
+ if (!pending) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Cannot handle NULL response\n");
+ return;
+ }
+ if (pending->response_cb)
+ pending->response_cb(response, pending->priv);
+ else
+ LOGP(DLMGCP, LOGL_INFO, "MGCP response ignored (NULL cb)\n");
+ talloc_free(pending);
+}
+
+static int mgcp_response_parse_head(struct mgcp_response *r, struct msgb *msg)
+{
+ int comment_pos;
+ char *end;
+
+ if (mgcp_msg_terminate_nul(msg))
+ goto response_parse_failure;
+
+ r->body = (char *)msg->data;
+
+ if (sscanf(r->body, "%3d %u %n",
+ &r->head.response_code, &r->head.trans_id,
+ &comment_pos) != 2)
+ goto response_parse_failure;
+
+ r->head.comment = r->body + comment_pos;
+ end = strchr(r->head.comment, '\r');
+ if (!end)
+ goto response_parse_failure;
+ /* Mark the end of the comment */
+ *end = '\0';
+ r->body = end + 1;
+ if (r->body[0] == '\n')
+ r->body ++;
+ return 0;
+
+response_parse_failure:
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Failed to parse MGCP response header\n");
+ return -EINVAL;
+}
+
+/* TODO undup against mgcp_protocol.c:mgcp_check_param() */
+static bool mgcp_line_is_valid(const char *line)
+{
+ const size_t line_len = strlen(line);
+ if (line[0] == '\0')
+ return true;
+
+ if (line_len < 2
+ || line[1] != '=') {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Wrong MGCP option format: '%s'\n",
+ line);
+ return false;
+ }
+
+ return true;
+}
+
+/* Parse a line like "m=audio 16002 RTP/AVP 98" */
+static int mgcp_parse_audio_port(struct mgcp_response *r, const char *line)
+{
+ if (sscanf(line, "m=audio %hu",
+ &r->audio_port) != 1)
+ goto response_parse_failure;
+
+ return 0;
+
+response_parse_failure:
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Failed to parse MGCP response header (audio port)\n");
+ return -EINVAL;
+}
+
+/* Parse a line like "c=IN IP4 10.11.12.13" */
+static int mgcp_parse_audio_ip(struct mgcp_response *r, const char *line)
+{
+ struct in_addr ip_test;
+
+ if (strlen(line) < 16)
+ goto response_parse_failure;
+
+ /* The current implementation strictly supports IPV4 only ! */
+ if (memcmp("c=IN IP4 ", line, 9) != 0)
+ goto response_parse_failure;
+
+ /* Extract IP-Address */
+ strncpy(r->audio_ip, line + 9, sizeof(r->audio_ip));
+ r->audio_ip[sizeof(r->audio_ip) - 1] = '\0';
+
+ /* Check IP-Address */
+ if (inet_aton(r->audio_ip, &ip_test) == 0)
+ goto response_parse_failure;
+
+ return 0;
+
+response_parse_failure:
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Failed to parse MGCP response header (audio ip)\n");
+ return -EINVAL;
+}
+
+int mgcp_response_parse_params(struct mgcp_response *r)
+{
+ char *line;
+ int rc;
+ OSMO_ASSERT(r->body);
+ char *data = strstr(r->body, "\n\n");
+
+ if (!data) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "MGCP response: cannot find start of parameters\n");
+ return -EINVAL;
+ }
+
+ /* Advance to after the \n\n, replace the second \n with \0. That's
+ * where the parameters start. */
+ data ++;
+ *data = '\0';
+ data ++;
+
+ for_each_non_empty_line(line, data) {
+ if (!mgcp_line_is_valid(line))
+ return -EINVAL;
+
+ switch (line[0]) {
+ case 'm':
+ rc = mgcp_parse_audio_port(r, line);
+ if (rc)
+ return rc;
+ break;
+ case 'c':
+ rc = mgcp_parse_audio_ip(r, line);
+ if (rc)
+ return rc;
+ break;
+ default:
+ /* skip unhandled parameters */
+ break;
+ }
+ }
+ return 0;
+}
+
+static struct mgcp_response_pending *mgcp_client_response_pending_get(
+ struct mgcp_client *mgcp,
+ struct mgcp_response *r)
+{
+ struct mgcp_response_pending *pending;
+ if (!r)
+ return NULL;
+ llist_for_each_entry(pending, &mgcp->responses_pending, entry) {
+ if (pending->trans_id == r->head.trans_id) {
+ llist_del(&pending->entry);
+ return pending;
+ }
+ }
+ return NULL;
+}
+
+/* Feed an MGCP message into the receive processing.
+ * Parse the head and call any callback registered for the transaction id found
+ * in the MGCP message. This is normally called directly from the internal
+ * mgcp_do_read that reads from the socket connected to the MGCP gateway. This
+ * function is published mainly to be able to feed data from the test suite.
+ */
+int mgcp_client_rx(struct mgcp_client *mgcp, struct msgb *msg)
+{
+ struct mgcp_response r = { 0 };
+ struct mgcp_response_pending *pending;
+ int rc;
+
+ rc = mgcp_response_parse_head(&r, msg);
+ if (rc) {
+ LOGP(DLMGCP, LOGL_ERROR, "Cannot parse MGCP response\n");
+ return -1;
+ }
+
+ pending = mgcp_client_response_pending_get(mgcp, &r);
+ if (!pending) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Cannot find matching MGCP transaction for trans_id %d\n",
+ r.head.trans_id);
+ return -1;
+ }
+
+ mgcp_client_handle_response(mgcp, pending, &r);
+ return 0;
+}
+
+static int mgcp_do_read(struct osmo_fd *fd)
+{
+ struct mgcp_client *mgcp = fd->data;
+ struct msgb *msg;
+ int ret;
+
+ msg = msgb_alloc_headroom(4096, 128, "mgcp_from_gw");
+ if (!msg) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to allocate MGCP message.\n");
+ return -1;
+ }
+
+ ret = read(fd->fd, msg->data, 4096 - 128);
+ if (ret <= 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to read: %d/%s\n", errno, strerror(errno));
+ msgb_free(msg);
+ return -1;
+ } else if (ret > 4096 - 128) {
+ LOGP(DLMGCP, LOGL_ERROR, "Too much data: %d\n", ret);
+ msgb_free(msg);
+ return -1;
+ }
+
+ msg->l2h = msgb_put(msg, ret);
+ ret = mgcp_client_rx(mgcp, msg);
+ talloc_free(msg);
+ return ret;
+}
+
+static int mgcp_do_write(struct osmo_fd *fd, struct msgb *msg)
+{
+ int ret;
+ static char strbuf[4096];
+ unsigned int l = msg->len < sizeof(strbuf) ? msg->len : sizeof(strbuf);
+ unsigned int i;
+
+ strncpy(strbuf, (const char*)msg->data, l);
+ for (i = 0; i < sizeof(strbuf); i++) {
+ if (strbuf[i] == '\n' || strbuf[i] == '\r') {
+ strbuf[i] = '\0';
+ break;
+ }
+ }
+ DEBUGP(DLMGCP, "Tx MGCP msg to MGCP GW: '%s'\n", strbuf);
+
+ LOGP(DLMGCP, LOGL_DEBUG, "Sending msg to MGCP GW size: %u\n", msg->len);
+
+ ret = write(fd->fd, msg->data, msg->len);
+ if (ret != msg->len)
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to forward message to MGCP"
+ " GW: %s\n", strerror(errno));
+
+ return ret;
+}
+
+struct mgcp_client *mgcp_client_init(void *ctx,
+ struct mgcp_client_conf *conf)
+{
+ struct mgcp_client *mgcp;
+
+ mgcp = talloc_zero(ctx, struct mgcp_client);
+
+ INIT_LLIST_HEAD(&mgcp->responses_pending);
+ INIT_LLIST_HEAD(&mgcp->inuse_endpoints);
+
+ mgcp->next_trans_id = 1;
+
+ mgcp->actual.local_addr = conf->local_addr ? conf->local_addr :
+ MGCP_CLIENT_LOCAL_ADDR_DEFAULT;
+ mgcp->actual.local_port = conf->local_port >= 0 ? (uint16_t)conf->local_port :
+ MGCP_CLIENT_LOCAL_PORT_DEFAULT;
+
+ mgcp->actual.remote_addr = conf->remote_addr ? conf->remote_addr :
+ MGCP_CLIENT_REMOTE_ADDR_DEFAULT;
+ mgcp->actual.remote_port = conf->remote_port >= 0 ? (uint16_t)conf->remote_port :
+ MGCP_CLIENT_REMOTE_PORT_DEFAULT;
+
+ mgcp->actual.first_endpoint = conf->first_endpoint > 0 ? (uint16_t)conf->first_endpoint : 0;
+ mgcp->actual.last_endpoint = conf->last_endpoint > 0 ? (uint16_t)conf->last_endpoint : 0;
+ mgcp->actual.bts_base = conf->bts_base > 0 ? (uint16_t)conf->bts_base : 4000;
+
+ return mgcp;
+}
+
+int mgcp_client_connect(struct mgcp_client *mgcp)
+{
+ int on;
+ struct sockaddr_in addr;
+ struct osmo_wqueue *wq;
+ int rc;
+
+ if (!mgcp) {
+ LOGP(DLMGCP, LOGL_FATAL, "MGCPGW client not initialized properly\n");
+ return -EINVAL;
+ }
+
+ wq = &mgcp->wq;
+
+ wq->bfd.fd = socket(AF_INET, SOCK_DGRAM, 0);
+ if (wq->bfd.fd < 0) {
+ LOGP(DLMGCP, LOGL_FATAL, "Failed to create UDP socket errno: %d\n", errno);
+ return -errno;
+ }
+
+ on = 1;
+ if (setsockopt(wq->bfd.fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) < 0) {
+ LOGP(DLMGCP, LOGL_FATAL,
+ "Failed to initialize socket for MGCP GW: %s\n",
+ strerror(errno));
+ rc = -errno;
+ goto error_close_fd;
+ }
+
+ /* bind socket */
+ memset(&addr, 0, sizeof(addr));
+ addr.sin_family = AF_INET;
+ inet_aton(mgcp->actual.local_addr, &addr.sin_addr);
+ addr.sin_port = htons(mgcp->actual.local_port);
+ if (bind(wq->bfd.fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ LOGP(DLMGCP, LOGL_FATAL,
+ "Failed to bind for MGCP GW to %s %u\n",
+ mgcp->actual.local_addr, mgcp->actual.local_port);
+ rc = -errno;
+ goto error_close_fd;
+ }
+
+ /* connect to the remote */
+ inet_aton(mgcp->actual.remote_addr, &addr.sin_addr);
+ addr.sin_port = htons(mgcp->actual.remote_port);
+ if (connect(wq->bfd.fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
+ LOGP(DLMGCP, LOGL_FATAL,
+ "Failed to connect to MGCP GW at %s %u: %s\n",
+ mgcp->actual.remote_addr, mgcp->actual.remote_port,
+ strerror(errno));
+ rc = -errno;
+ goto error_close_fd;
+ }
+
+ mgcp->remote_addr = htonl(addr.sin_addr.s_addr);
+
+ osmo_wqueue_init(wq, 10);
+ wq->bfd.when = BSC_FD_READ;
+ wq->bfd.data = mgcp;
+ wq->read_cb = mgcp_do_read;
+ wq->write_cb = mgcp_do_write;
+
+ if (osmo_fd_register(&wq->bfd) != 0) {
+ LOGP(DLMGCP, LOGL_FATAL, "Failed to register BFD\n");
+ rc = -EIO;
+ goto error_close_fd;
+ }
+ LOGP(DLMGCP, LOGL_INFO, "MGCP GW connection: %s:%u -> %s:%u\n",
+ mgcp->actual.local_addr, mgcp->actual.local_port,
+ mgcp->actual.remote_addr, mgcp->actual.remote_port);
+
+ return 0;
+error_close_fd:
+ close(wq->bfd.fd);
+ wq->bfd.fd = -1;
+ return rc;
+}
+
+const char *mgcp_client_remote_addr_str(struct mgcp_client *mgcp)
+{
+ return mgcp->actual.remote_addr;
+}
+
+uint16_t mgcp_client_remote_port(struct mgcp_client *mgcp)
+{
+ return mgcp->actual.remote_port;
+}
+
+/* Return the MGCP GW binary IPv4 address in network byte order. */
+uint32_t mgcp_client_remote_addr_n(struct mgcp_client *mgcp)
+{
+ return mgcp->remote_addr;
+}
+
+struct mgcp_response_pending * mgcp_client_pending_add(
+ struct mgcp_client *mgcp,
+ mgcp_trans_id_t trans_id,
+ mgcp_response_cb_t response_cb,
+ void *priv)
+{
+ struct mgcp_response_pending *pending;
+
+ pending = talloc_zero(mgcp, struct mgcp_response_pending);
+ pending->trans_id = trans_id;
+ pending->response_cb = response_cb;
+ pending->priv = priv;
+ llist_add_tail(&pending->entry, &mgcp->responses_pending);
+
+ return pending;
+}
+
+/* Send the MGCP message in msg to the MGCP GW and handle a response with
+ * response_cb. NOTE: the response_cb still needs to call
+ * mgcp_response_parse_params(response) to get the parsed parameters -- to
+ * potentially save some CPU cycles, only the head line has been parsed when
+ * the response_cb is invoked. */
+int mgcp_client_tx(struct mgcp_client *mgcp, struct msgb *msg,
+ mgcp_response_cb_t response_cb, void *priv)
+{
+ struct mgcp_response_pending *pending;
+ mgcp_trans_id_t trans_id;
+ int rc;
+
+ trans_id = msg->cb[MSGB_CB_MGCP_TRANS_ID];
+ if (!trans_id) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Unset transaction id in mgcp send request\n");
+ talloc_free(msg);
+ return -EINVAL;
+ }
+
+ pending = mgcp_client_pending_add(mgcp, trans_id, response_cb, priv);
+
+ if (msgb_l2len(msg) > 4096) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Cannot send, MGCP message too large: %u\n",
+ msgb_l2len(msg));
+ msgb_free(msg);
+ rc = -EINVAL;
+ goto mgcp_tx_error;
+ }
+
+ rc = osmo_wqueue_enqueue(&mgcp->wq, msg);
+ if (rc) {
+ LOGP(DLMGCP, LOGL_FATAL, "Could not queue message to MGCP GW\n");
+ msgb_free(msg);
+ goto mgcp_tx_error;
+ } else
+ LOGP(DLMGCP, LOGL_INFO, "Queued %u bytes for MGCP GW\n",
+ msgb_l2len(msg));
+ return 0;
+
+mgcp_tx_error:
+ /* Pass NULL to response cb to indicate an error */
+ mgcp_client_handle_response(mgcp, pending, NULL);
+ return -1;
+}
+
+static struct msgb *mgcp_msg_from_buf(mgcp_trans_id_t trans_id,
+ const char *buf, int len)
+{
+ struct msgb *msg;
+
+ if (len > (4096 - 128)) {
+ LOGP(DLMGCP, LOGL_ERROR, "Cannot send to MGCP GW:"
+ " message too large: %d\n", len);
+ return NULL;
+ }
+
+ msg = msgb_alloc_headroom(4096, 128, "MGCP tx");
+ OSMO_ASSERT(msg);
+
+ char *dst = (char*)msgb_put(msg, len);
+ memcpy(dst, buf, len);
+ msg->l2h = msg->data;
+ msg->cb[MSGB_CB_MGCP_TRANS_ID] = trans_id;
+
+ return msg;
+}
+
+static struct msgb *mgcp_msg_from_str(mgcp_trans_id_t trans_id,
+ const char *fmt, ...)
+{
+ static char compose[4096 - 128];
+ va_list ap;
+ int len;
+ OSMO_ASSERT(fmt);
+
+ va_start(ap, fmt);
+ len = vsnprintf(compose, sizeof(compose), fmt, ap);
+ va_end(ap);
+ if (len >= sizeof(compose)) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Message too large: trans_id=%u len=%d\n",
+ trans_id, len);
+ return NULL;
+ }
+ if (len < 1) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Failed to compose message: trans_id=%u len=%d\n",
+ trans_id, len);
+ return NULL;
+ }
+ return mgcp_msg_from_buf(trans_id, compose, len);
+}
+
+static mgcp_trans_id_t mgcp_client_next_trans_id(struct mgcp_client *mgcp)
+{
+ /* avoid zero trans_id to distinguish from unset trans_id */
+ if (!mgcp->next_trans_id)
+ mgcp->next_trans_id ++;
+ return mgcp->next_trans_id ++;
+}
+
+struct msgb *mgcp_msg_crcx(struct mgcp_client *mgcp,
+ uint16_t rtp_endpoint, unsigned int call_id,
+ enum mgcp_connection_mode mode)
+{
+ mgcp_trans_id_t trans_id = mgcp_client_next_trans_id(mgcp);
+ return mgcp_msg_from_str(trans_id,
+ "CRCX %u %x@mgw MGCP 1.0\r\n"
+ "C: %x\r\n"
+ "L: p:20, a:AMR, nt:IN\r\n"
+ "M: %s\r\n"
+ ,
+ trans_id,
+ rtp_endpoint,
+ call_id,
+ mgcp_client_cmode_name(mode));
+}
+
+struct msgb *mgcp_msg_mdcx(struct mgcp_client *mgcp,
+ uint16_t rtp_endpoint, const char *rtp_conn_addr,
+ uint16_t rtp_port, enum mgcp_connection_mode mode)
+
+{
+ mgcp_trans_id_t trans_id = mgcp_client_next_trans_id(mgcp);
+ return mgcp_msg_from_str(trans_id,
+ "MDCX %u %x@mgw MGCP 1.0\r\n"
+ "M: %s\r\n"
+ "\r\n"
+ "c=IN IP4 %s\r\n"
+ "m=audio %u RTP/AVP 255\r\n"
+ ,
+ trans_id,
+ rtp_endpoint,
+ mgcp_client_cmode_name(mode),
+ rtp_conn_addr,
+ rtp_port);
+}
+
+struct msgb *mgcp_msg_dlcx(struct mgcp_client *mgcp, uint16_t rtp_endpoint,
+ unsigned int call_id)
+{
+ mgcp_trans_id_t trans_id = mgcp_client_next_trans_id(mgcp);
+ return mgcp_msg_from_str(trans_id,
+ "DLCX %u %x@mgw MGCP 1.0\r\n"
+ "C: %x\r\n", trans_id, rtp_endpoint, call_id);
+}
+
+#define MGCP_CRCX_MANDATORY (MGCP_MSG_PRESENCE_ENDPOINT | \
+ MGCP_MSG_PRESENCE_CALL_ID | \
+ MGCP_MSG_PRESENCE_CONN_ID | \
+ MGCP_MSG_PRESENCE_CONN_MODE)
+#define MGCP_MDCX_MANDATORY (MGCP_MSG_PRESENCE_ENDPOINT | \
+ MGCP_MSG_PRESENCE_CONN_ID)
+#define MGCP_DLCX_MANDATORY (MGCP_MSG_PRESENCE_ENDPOINT)
+#define MGCP_AUEP_MANDATORY (MGCP_MSG_PRESENCE_ENDPOINT)
+#define MGCP_RSIP_MANDATORY 0 /* none */
+
+struct msgb *mgcp_msg_gen(struct mgcp_client *mgcp, struct mgcp_msg *mgcp_msg)
+{
+ mgcp_trans_id_t trans_id = mgcp_client_next_trans_id(mgcp);
+ uint32_t mandatory_mask;
+ struct msgb *msg = msgb_alloc_headroom(4096, 128, "MGCP tx");
+ int rc = 0;
+
+ msg->l2h = msg->data;
+ msg->cb[MSGB_CB_MGCP_TRANS_ID] = trans_id;
+
+ /* Add command verb */
+ switch (mgcp_msg->verb) {
+ case MGCP_VERB_CRCX:
+ mandatory_mask = MGCP_CRCX_MANDATORY;
+ rc += msgb_printf(msg, "CRCX %u", trans_id);
+ break;
+ case MGCP_VERB_MDCX:
+ mandatory_mask = MGCP_MDCX_MANDATORY;
+ rc += msgb_printf(msg, "MDCX %u", trans_id);
+ break;
+ case MGCP_VERB_DLCX:
+ mandatory_mask = MGCP_DLCX_MANDATORY;
+ rc += msgb_printf(msg, "DLCX %u", trans_id);
+ break;
+ case MGCP_VERB_AUEP:
+ mandatory_mask = MGCP_AUEP_MANDATORY;
+ rc += msgb_printf(msg, "AUEP %u", trans_id);
+ break;
+ case MGCP_VERB_RSIP:
+ mandatory_mask = MGCP_RSIP_MANDATORY;
+ rc += msgb_printf(msg, "RSIP %u", trans_id);
+ break;
+ default:
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Invalid command verb, can not generate MGCP message\n");
+ msgb_free(msg);
+ return NULL;
+ }
+
+ /* Check if mandatory fields are missing */
+ if (!((mgcp_msg->presence & mandatory_mask) == mandatory_mask)) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "One or more missing mandatory fields, can not generate MGCP message\n");
+ msgb_free(msg);
+ return NULL;
+ }
+
+ /* Add endpoint name */
+ if (mgcp_msg->presence & MGCP_MSG_PRESENCE_ENDPOINT)
+ rc += msgb_printf(msg, " %s", mgcp_msg->endpoint);
+
+ /* Add protocol version */
+ rc += msgb_printf(msg, " MGCP 1.0\r\n");
+
+ /* Add call id */
+ if (mgcp_msg->presence & MGCP_MSG_PRESENCE_CALL_ID)
+ rc += msgb_printf(msg, "C: %x\r\n", mgcp_msg->call_id);
+
+ /* Add connection id */
+ if (mgcp_msg->presence & MGCP_MSG_PRESENCE_CONN_ID)
+ rc += msgb_printf(msg, "I: %u\r\n", mgcp_msg->conn_id);
+
+ /* Add local connection options */
+ if (mgcp_msg->presence & MGCP_MSG_PRESENCE_CONN_ID
+ && mgcp_msg->verb == MGCP_VERB_CRCX)
+ rc += msgb_printf(msg, "L: p:20, a:AMR, nt:IN\r\n");
+
+ /* Add mode */
+ if (mgcp_msg->presence & MGCP_MSG_PRESENCE_CONN_MODE)
+ rc +=
+ msgb_printf(msg, "M: %s\r\n",
+ mgcp_client_cmode_name(mgcp_msg->conn_mode));
+
+ /* Add RTP address and port (SDP) */
+ if (mgcp_msg->presence & MGCP_MSG_PRESENCE_AUDIO_IP
+ && mgcp_msg->presence & MGCP_MSG_PRESENCE_AUDIO_PORT) {
+ rc += msgb_printf(msg, "\r\n");
+ rc += msgb_printf(msg, "c=IN IP4 %s\r\n", mgcp_msg->audio_ip);
+ rc +=
+ msgb_printf(msg, "m=audio %u RTP/AVP 255\r\n",
+ mgcp_msg->audio_port);
+ }
+
+ if (rc != 0) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "message buffer to small, can not generate MGCP message\n");
+ msgb_free(msg);
+ msg = NULL;
+ }
+
+ return msg;
+}
+
+struct mgcp_client_conf *mgcp_client_conf_actual(struct mgcp_client *mgcp)
+{
+ return &mgcp->actual;
+}
+
+const struct value_string mgcp_client_connection_mode_strs[] = {
+ { MGCP_CONN_NONE, "none" },
+ { MGCP_CONN_RECV_SEND, "sendrecv" },
+ { MGCP_CONN_SEND_ONLY, "sendonly" },
+ { MGCP_CONN_RECV_ONLY, "recvonly" },
+ { MGCP_CONN_LOOPBACK, "loopback" },
+ { 0, NULL }
+};
diff --git a/src/libosmo-mgcp-client/mgcp_client_vty.c b/src/libosmo-mgcp-client/mgcp_client_vty.c
new file mode 100644
index 0000000..f8129c0
--- /dev/null
+++ b/src/libosmo-mgcp-client/mgcp_client_vty.c
@@ -0,0 +1,206 @@
+/* MGCP client interface to quagga VTY */
+/* (C) 2016 by sysmocom s.m.f.c. GmbH <info@sysmocom.de>
+ * Based on OpenBSC interface to quagga VTY (libmsc/vty_interface_layer3.c)
+ * (C) 2009 by Harald Welte <laforge@gnumonks.org>
+ * (C) 2009-2011 by Holger Hans Peter Freyther
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <inttypes.h>
+#include <stdlib.h>
+#include <talloc.h>
+
+#include <osmocom/vty/command.h>
+#include <osmocom/core/utils.h>
+
+#include <osmocom/mgcp_client/mgcp_client.h>
+
+#define MGW_STR "Configure MGCP connection to Media Gateway\n"
+
+void *global_mgcp_client_ctx = NULL;
+struct mgcp_client_conf *global_mgcp_client_conf = NULL;
+
+DEFUN(cfg_mgw_local_ip, cfg_mgw_local_ip_cmd,
+ "mgw local-ip A.B.C.D",
+ MGW_STR "local bind to connect to MGW from\n"
+ "local bind IP address\n")
+{
+ if (!global_mgcp_client_conf)
+ return CMD_ERR_NOTHING_TODO;
+ OSMO_ASSERT(global_mgcp_client_ctx);
+ global_mgcp_client_conf->local_addr =
+ talloc_strdup(global_mgcp_client_ctx, argv[0]);
+ return CMD_SUCCESS;
+}
+ALIAS_DEPRECATED(cfg_mgw_local_ip, cfg_mgcpgw_local_ip_cmd,
+ "mgcpgw local-ip A.B.C.D",
+ MGW_STR "local bind to connect to MGCP gateway with\n"
+ "local bind IP address\n")
+
+DEFUN(cfg_mgw_local_port, cfg_mgw_local_port_cmd,
+ "mgw local-port <0-65535>",
+ MGW_STR "local port to connect to MGW from\n"
+ "local bind port\n")
+{
+ if (!global_mgcp_client_conf)
+ return CMD_ERR_NOTHING_TODO;
+ global_mgcp_client_conf->local_port = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+ALIAS_DEPRECATED(cfg_mgw_local_port, cfg_mgcpgw_local_port_cmd,
+ "mgcpgw local-port <0-65535>",
+ MGW_STR "local bind to connect to MGCP gateway with\n"
+ "local bind port\n")
+
+DEFUN(cfg_mgw_remote_ip, cfg_mgw_remote_ip_cmd,
+ "mgw remote-ip A.B.C.D",
+ MGW_STR "remote IP address to reach the MGW at\n"
+ "remote IP address\n")
+{
+ if (!global_mgcp_client_conf)
+ return CMD_ERR_NOTHING_TODO;
+ OSMO_ASSERT(global_mgcp_client_ctx);
+ global_mgcp_client_conf->remote_addr =
+ talloc_strdup(global_mgcp_client_ctx, argv[0]);
+ return CMD_SUCCESS;
+}
+ALIAS_DEPRECATED(cfg_mgw_remote_ip, cfg_mgcpgw_remote_ip_cmd,
+ "mgcpgw remote-ip A.B.C.D",
+ MGW_STR "remote bind to connect to MGCP gateway with\n"
+ "remote bind IP address\n")
+
+DEFUN(cfg_mgw_remote_port, cfg_mgw_remote_port_cmd,
+ "mgw remote-port <0-65535>",
+ MGW_STR "remote port to reach the MGW at\n"
+ "remote port\n")
+{
+ if (!global_mgcp_client_conf)
+ return CMD_ERR_NOTHING_TODO;
+ global_mgcp_client_conf->remote_port = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+ALIAS_DEPRECATED(cfg_mgw_remote_port, cfg_mgcpgw_remote_port_cmd,
+ "mgcpgw remote-port <0-65535>",
+ MGW_STR "remote bind to connect to MGCP gateway with\n"
+ "remote bind port\n")
+
+DEFUN(cfg_mgw_endpoint_range, cfg_mgw_endpoint_range_cmd,
+ "mgw endpoint-range <1-65534> <1-65534>",
+ MGW_STR "usable range of endpoint identifiers\n"
+ "set first usable endpoint identifier\n"
+ "set last usable endpoint identifier\n")
+{
+ uint16_t first_endpoint = atoi(argv[0]);
+ uint16_t last_endpoint = atoi(argv[1]);
+
+ if (last_endpoint < first_endpoint) {
+ vty_out(vty, "last endpoint must be greater than first endpoint!%s",
+ VTY_NEWLINE);
+ return CMD_SUCCESS;
+ }
+
+ global_mgcp_client_conf->first_endpoint = first_endpoint;
+ global_mgcp_client_conf->last_endpoint = last_endpoint;
+ return CMD_SUCCESS;
+}
+ALIAS_DEPRECATED(cfg_mgw_endpoint_range, cfg_mgcpgw_endpoint_range_cmd,
+ "mgcpgw endpoint-range <1-65534> <1-65534>",
+ MGW_STR "usable range of endpoint identifiers\n"
+ "set first useable endpoint identifier\n"
+ "set the last useable endpoint identifier\n")
+
+#define BTS_START_STR "First UDP port allocated for the BTS side\n"
+#define UDP_PORT_STR "UDP Port number\n"
+DEFUN(cfg_mgw_rtp_bts_base_port,
+ cfg_mgw_rtp_bts_base_port_cmd,
+ "mgw bts-base <0-65534>",
+ MGW_STR
+ BTS_START_STR
+ UDP_PORT_STR)
+{
+ global_mgcp_client_conf->bts_base = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+ALIAS_DEPRECATED(cfg_mgw_rtp_bts_base_port,
+ cfg_mgcpgw_rtp_bts_base_port_cmd,
+ "mgcpgw bts-base <0-65534>",
+ MGW_STR
+ BTS_START_STR
+ UDP_PORT_STR)
+
+int mgcp_client_config_write(struct vty *vty, const char *indent)
+{
+ const char *addr;
+ int port;
+ uint16_t first_endpoint;
+ uint16_t last_endpoint;
+ uint16_t bts_base;
+
+ addr = global_mgcp_client_conf->local_addr;
+ if (addr)
+ vty_out(vty, "%smgw local-ip %s%s", indent, addr,
+ VTY_NEWLINE);
+ port = global_mgcp_client_conf->local_port;
+ if (port >= 0)
+ vty_out(vty, "%smgw local-port %u%s", indent,
+ (uint16_t)port, VTY_NEWLINE);
+
+ addr = global_mgcp_client_conf->remote_addr;
+ if (addr)
+ vty_out(vty, "%smgw remote-ip %s%s", indent, addr,
+ VTY_NEWLINE);
+ port = global_mgcp_client_conf->remote_port;
+ if (port >= 0)
+ vty_out(vty, "%smgw remote-port %u%s", indent,
+ (uint16_t)port, VTY_NEWLINE);
+
+ first_endpoint = global_mgcp_client_conf->first_endpoint;
+ last_endpoint = global_mgcp_client_conf->last_endpoint;
+ if (last_endpoint != 0) {
+ vty_out(vty, "%smgw endpoint-range %u %u%s", indent,
+ first_endpoint, last_endpoint, VTY_NEWLINE);
+ }
+
+ bts_base = global_mgcp_client_conf->bts_base;
+ if (bts_base) {
+ vty_out(vty, "%smgw bts-base %u%s", indent,
+ bts_base, VTY_NEWLINE);
+ }
+
+ return CMD_SUCCESS;
+}
+
+void mgcp_client_vty_init(void *talloc_ctx, int node, struct mgcp_client_conf *conf)
+{
+ global_mgcp_client_ctx = talloc_ctx;
+ global_mgcp_client_conf = conf;
+
+ install_element(node, &cfg_mgw_local_ip_cmd);
+ install_element(node, &cfg_mgw_local_port_cmd);
+ install_element(node, &cfg_mgw_remote_ip_cmd);
+ install_element(node, &cfg_mgw_remote_port_cmd);
+ install_element(node, &cfg_mgw_endpoint_range_cmd);
+ install_element(node, &cfg_mgw_rtp_bts_base_port_cmd);
+
+ /* deprecated 'mgcpgw' commands */
+ install_element(node, &cfg_mgcpgw_local_ip_cmd);
+ install_element(node, &cfg_mgcpgw_local_port_cmd);
+ install_element(node, &cfg_mgcpgw_remote_ip_cmd);
+ install_element(node, &cfg_mgcpgw_remote_port_cmd);
+ install_element(node, &cfg_mgcpgw_endpoint_range_cmd);
+ install_element(node, &cfg_mgcpgw_rtp_bts_base_port_cmd);
+}
diff --git a/src/libosmo-mgcp/Makefile.am b/src/libosmo-mgcp/Makefile.am
new file mode 100644
index 0000000..fce0e1b
--- /dev/null
+++ b/src/libosmo-mgcp/Makefile.am
@@ -0,0 +1,46 @@
+AM_CPPFLAGS = \
+ $(all_includes) \
+ -I$(top_srcdir)/include \
+ -I$(top_builddir) \
+ $(NULL)
+
+AM_CFLAGS = \
+ -Wall \
+ $(LIBOSMOCORE_CFLAGS) \
+ $(LIBOSMOVTY_CFLAGS) \
+ $(LIBOSMONETIF_CFLAGS) \
+ $(COVERAGE_CFLAGS) \
+ $(NULL)
+
+AM_LDFLAGS = \
+ $(LIBOSMOCORE_LIBS) \
+ $(LIBOSMOVTY_LIBS) \
+ $(LIBOSMONETIF_LIBS) \
+ $(COVERAGE_LDFLAGS) \
+ $(NULL)
+
+# This is not at all related to the release version, but a range of supported
+# API versions. Read TODO_RELEASE in the source tree's root!
+MGCP_LIBVERSION=1:0:0
+
+lib_LTLIBRARIES = \
+ libosmo-mgcp.la \
+ $(NULL)
+
+noinst_HEADERS = \
+ g711common.h \
+ $(NULL)
+
+libosmo_mgcp_la_SOURCES = \
+ mgcp_protocol.c \
+ mgcp_network.c \
+ mgcp_vty.c \
+ mgcp_osmux.c \
+ mgcp_sdp.c \
+ mgcp_msg.c \
+ mgcp_conn.c \
+ mgcp_stat.c \
+ mgcp_ep.c \
+ $(NULL)
+
+libosmo_mgcp_la_LDFLAGS = $(AM_LDFLAGS) -version-info $(MGCP_LIBVERSION)
diff --git a/src/libosmo-mgcp/g711common.h b/src/libosmo-mgcp/g711common.h
new file mode 100644
index 0000000..cb35fc6
--- /dev/null
+++ b/src/libosmo-mgcp/g711common.h
@@ -0,0 +1,187 @@
+/*
+ * PCM - A-Law conversion
+ * Copyright (c) 2000 by Abramo Bagnara <abramo@alsa-project.org>
+ *
+ * Wrapper for linphone Codec class by Simon Morlat <simon.morlat@linphone.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+static inline int val_seg(int val)
+{
+ int r = 0;
+ val >>= 7; /*7 = 4 + 3*/
+ if (val & 0xf0) {
+ val >>= 4;
+ r += 4;
+ }
+ if (val & 0x0c) {
+ val >>= 2;
+ r += 2;
+ }
+ if (val & 0x02)
+ r += 1;
+ return r;
+}
+
+/*
+ * s16_to_alaw() - Convert a 16-bit linear PCM value to 8-bit A-law
+ *
+ * s16_to_alaw() accepts an 16-bit integer and encodes it as A-law data.
+ *
+ * Linear Input Code Compressed Code
+ * ------------------------ ---------------
+ * 0000000wxyza 000wxyz
+ * 0000001wxyza 001wxyz
+ * 000001wxyzab 010wxyz
+ * 00001wxyzabc 011wxyz
+ * 0001wxyzabcd 100wxyz
+ * 001wxyzabcde 101wxyz
+ * 01wxyzabcdef 110wxyz
+ * 1wxyzabcdefg 111wxyz
+ *
+ * For further information see John C. Bellamy's Digital Telephony, 1982,
+ * John Wiley & Sons, pps 98-111 and 472-476.
+ * G711 is designed for 13 bits input signal, this function add extra shifting to take this into account.
+ */
+
+static inline unsigned char s16_to_alaw(int pcm_val)
+{
+ int mask;
+ int seg;
+ unsigned char aval;
+
+ if (pcm_val >= 0) {
+ mask = 0xD5;
+ } else {
+ mask = 0x55;
+ pcm_val = -pcm_val;
+ if (pcm_val > 0x7fff)
+ pcm_val = 0x7fff;
+ }
+
+ if (pcm_val < 256) /*256 = 32 << 3*/
+ aval = pcm_val >> 4; /*4 = 1 + 3*/
+ else {
+ /* Convert the scaled magnitude to segment number. */
+ seg = val_seg(pcm_val);
+ aval = (seg << 4) | ((pcm_val >> (seg + 3)) & 0x0f);
+ }
+ return aval ^ mask;
+}
+
+/*
+ * alaw_to_s16() - Convert an A-law value to 16-bit linear PCM
+ *
+ */
+static inline int alaw_to_s16(unsigned char a_val)
+{
+ int t;
+ int seg;
+
+ a_val ^= 0x55;
+ t = a_val & 0x7f;
+ if (t < 16)
+ t = (t << 4) + 8;
+ else {
+ seg = (t >> 4) & 0x07;
+ t = ((t & 0x0f) << 4) + 0x108;
+ t <<= seg -1;
+ }
+ return ((a_val & 0x80) ? t : -t);
+}
+/*
+ * s16_to_ulaw() - Convert a linear PCM value to u-law
+ *
+ * In order to simplify the encoding process, the original linear magnitude
+ * is biased by adding 33 which shifts the encoding range from (0 - 8158) to
+ * (33 - 8191). The result can be seen in the following encoding table:
+ *
+ * Biased Linear Input Code Compressed Code
+ * ------------------------ ---------------
+ * 00000001wxyza 000wxyz
+ * 0000001wxyzab 001wxyz
+ * 000001wxyzabc 010wxyz
+ * 00001wxyzabcd 011wxyz
+ * 0001wxyzabcde 100wxyz
+ * 001wxyzabcdef 101wxyz
+ * 01wxyzabcdefg 110wxyz
+ * 1wxyzabcdefgh 111wxyz
+ *
+ * Each biased linear code has a leading 1 which identifies the segment
+ * number. The value of the segment number is equal to 7 minus the number
+ * of leading 0's. The quantization interval is directly available as the
+ * four bits wxyz. * The trailing bits (a - h) are ignored.
+ *
+ * Ordinarily the complement of the resulting code word is used for
+ * transmission, and so the code word is complemented before it is returned.
+ *
+ * For further information see John C. Bellamy's Digital Telephony, 1982,
+ * John Wiley & Sons, pps 98-111 and 472-476.
+ */
+
+static inline unsigned char s16_to_ulaw(int pcm_val) /* 2's complement (16-bit range) */
+{
+ int mask;
+ int seg;
+ unsigned char uval;
+
+ if (pcm_val < 0) {
+ pcm_val = 0x84 - pcm_val;
+ mask = 0x7f;
+ } else {
+ pcm_val += 0x84;
+ mask = 0xff;
+ }
+ if (pcm_val > 0x7fff)
+ pcm_val = 0x7fff;
+
+ /* Convert the scaled magnitude to segment number. */
+ seg = val_seg(pcm_val);
+
+ /*
+ * Combine the sign, segment, quantization bits;
+ * and complement the code word.
+ */
+ uval = (seg << 4) | ((pcm_val >> (seg + 3)) & 0x0f);
+ return uval ^ mask;
+}
+
+/*
+ * ulaw_to_s16() - Convert a u-law value to 16-bit linear PCM
+ *
+ * First, a biased linear code is derived from the code word. An unbiased
+ * output can then be obtained by subtracting 33 from the biased code.
+ *
+ * Note that this function expects to be passed the complement of the
+ * original code word. This is in keeping with ISDN conventions.
+ */
+static inline int ulaw_to_s16(unsigned char u_val)
+{
+ int t;
+
+ /* Complement to obtain normal u-law value. */
+ u_val = ~u_val;
+
+ /*
+ * Extract and bias the quantization bits. Then
+ * shift up by the segment number and subtract out the bias.
+ */
+ t = ((u_val & 0x0f) << 3) + 0x84;
+ t <<= (u_val & 0x70) >> 4;
+
+ return ((u_val & 0x80) ? (0x84 - t) : (t - 0x84));
+}
diff --git a/src/libosmo-mgcp/mgcp_conn.c b/src/libosmo-mgcp/mgcp_conn.c
new file mode 100644
index 0000000..e0eec63
--- /dev/null
+++ b/src/libosmo-mgcp/mgcp_conn.c
@@ -0,0 +1,287 @@
+/* Message connection list handling */
+
+/*
+ * (C) 2017 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
+ * All Rights Reserved
+ *
+ * Author: Philipp Maier
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <osmocom/mgcp/mgcp_conn.h>
+#include <osmocom/mgcp/mgcp_internal.h>
+#include <osmocom/mgcp/mgcp_common.h>
+#include <osmocom/mgcp/mgcp_ep.h>
+
+/* Reset codec state and free memory */
+static void mgcp_rtp_codec_reset(struct mgcp_rtp_codec *codec)
+{
+ codec->payload_type = -1;
+ codec->subtype_name = NULL;
+ codec->audio_name = NULL;
+ codec->frame_duration_num = DEFAULT_RTP_AUDIO_FRAME_DUR_NUM;
+ codec->frame_duration_den = DEFAULT_RTP_AUDIO_FRAME_DUR_DEN;
+ codec->rate = DEFAULT_RTP_AUDIO_DEFAULT_RATE;
+ codec->channels = DEFAULT_RTP_AUDIO_DEFAULT_CHANNELS;
+
+ /* see also mgcp_sdp.c, mgcp_set_audio_info() */
+ talloc_free(codec->subtype_name);
+ talloc_free(codec->audio_name);
+}
+
+/* Reset states, free memory, set defaults and reset codec state */
+static void mgcp_rtp_conn_reset(struct mgcp_conn_rtp *conn)
+{
+ struct mgcp_rtp_end *end = &conn->end;
+
+ conn->type = MGCP_RTP_DEFAULT;
+ conn->osmux.allocated_cid = -1;
+
+ end->rtp.fd = -1;
+ end->rtcp.fd = -1;
+ end->local_port = 0;
+ end->packets_rx = 0;
+ end->octets_rx = 0;
+ end->packets_tx = 0;
+ end->octets_tx = 0;
+ end->dropped_packets = 0;
+ end->rtp_port = end->rtcp_port = 0;
+ talloc_free(end->fmtp_extra);
+ end->fmtp_extra = NULL;
+
+ /* Set default values */
+ end->frames_per_packet = 0; /* unknown */
+ end->packet_duration_ms = DEFAULT_RTP_AUDIO_PACKET_DURATION_MS;
+ end->output_enabled = 0;
+
+ mgcp_rtp_codec_reset(&end->codec);
+ mgcp_rtp_codec_reset(&end->alt_codec);
+}
+
+/*! allocate a new connection list entry.
+ * \param[in] ctx talloc context
+ * \param[in] endp associated endpoint
+ * \param[in] id identification number of the connection
+ * \param[in] type connection type (e.g. MGCP_CONN_TYPE_RTP)
+ * \returns pointer to allocated connection, NULL on error */
+struct mgcp_conn *mgcp_conn_alloc(void *ctx, struct mgcp_endpoint *endp,
+ uint32_t id, enum mgcp_conn_type type,
+ char *name)
+{
+ struct mgcp_conn *conn;
+ OSMO_ASSERT(endp);
+ OSMO_ASSERT(endp->conns.next != NULL && endp->conns.prev != NULL);
+ OSMO_ASSERT(strlen(name) < sizeof(conn->name));
+
+ /* Do not allow more then two connections */
+ if (llist_count(&endp->conns) >= endp->type->max_conns)
+ return NULL;
+
+ /* Prevent duplicate connection IDs */
+ if (mgcp_conn_get(endp, id))
+ return NULL;
+
+ /* Create new connection and add it to the list */
+ conn = talloc_zero(ctx, struct mgcp_conn);
+ if (!conn)
+ return NULL;
+ conn->endp = endp;
+ conn->type = type;
+ conn->mode = MGCP_CONN_NONE;
+ conn->mode_orig = MGCP_CONN_NONE;
+ conn->id = id;
+ conn->u.rtp.conn = conn;
+ strcpy(conn->name, name);
+
+ switch (type) {
+ case MGCP_CONN_TYPE_RTP:
+ mgcp_rtp_conn_reset(&conn->u.rtp);
+ break;
+ default:
+ /* NOTE: This should never be called with an
+ * invalid type, its up to the programmer
+ * to ensure propery types */
+ OSMO_ASSERT(false);
+ }
+
+ llist_add(&conn->entry, &endp->conns);
+
+ return conn;
+}
+
+/*! find a connection by its ID.
+ * \param[in] endp associated endpoint
+ * \param[in] id identification number of the connection
+ * \returns pointer to allocated connection, NULL if not found */
+struct mgcp_conn *mgcp_conn_get(struct mgcp_endpoint *endp, uint32_t id)
+{
+ OSMO_ASSERT(endp);
+ OSMO_ASSERT(endp->conns.next != NULL && endp->conns.prev != NULL);
+
+ struct mgcp_conn *conn;
+
+ llist_for_each_entry(conn, &endp->conns, entry) {
+ if (conn->id == id)
+ return conn;
+ }
+
+ return NULL;
+}
+
+/*! find an RTP connection by its ID.
+ * \param[in] endp associated endpoint
+ * \param[in] id identification number of the connection
+ * \returns pointer to allocated connection, NULL if not found */
+struct mgcp_conn_rtp *mgcp_conn_get_rtp(struct mgcp_endpoint *endp, uint32_t id)
+{
+ OSMO_ASSERT(endp);
+ OSMO_ASSERT(endp->conns.next != NULL && endp->conns.prev != NULL);
+
+ struct mgcp_conn *conn;
+
+ conn = mgcp_conn_get(endp, id);
+ if (!conn)
+ return NULL;
+
+ if (conn->type == MGCP_CONN_TYPE_RTP)
+ return &conn->u.rtp;
+
+ return NULL;
+}
+
+/*! free a connection by its ID.
+ * \param[in] endp associated endpoint
+ * \param[in] id identification number of the connection */
+void mgcp_conn_free(struct mgcp_endpoint *endp, uint32_t id)
+{
+ OSMO_ASSERT(endp);
+ OSMO_ASSERT(endp->conns.next != NULL && endp->conns.prev != NULL);
+
+ struct mgcp_conn *conn;
+
+ conn = mgcp_conn_get(endp, id);
+ if (!conn)
+ return;
+
+ switch (conn->type) {
+ case MGCP_CONN_TYPE_RTP:
+ osmux_disable_conn(&conn->u.rtp);
+ osmux_release_cid(&conn->u.rtp);
+ mgcp_free_rtp_port(&conn->u.rtp.end);
+ break;
+ default:
+ /* NOTE: This should never be called with an
+ * invalid type, its up to the programmer
+ * to ensure propery types */
+ OSMO_ASSERT(false);
+ }
+
+ llist_del(&conn->entry);
+ talloc_free(conn);
+}
+
+/*! free oldest connection in the list.
+ * \param[in] endp associated endpoint */
+void mgcp_conn_free_oldest(struct mgcp_endpoint *endp)
+{
+ OSMO_ASSERT(endp);
+ OSMO_ASSERT(endp->conns.next != NULL && endp->conns.prev != NULL);
+
+ struct mgcp_conn *conn;
+
+ if (llist_empty(&endp->conns))
+ return;
+
+ conn = llist_last_entry(&endp->conns, struct mgcp_conn, entry);
+ if (!conn)
+ return;
+
+ mgcp_conn_free(endp, conn->id);
+}
+
+/*! free all connections at once.
+ * \param[in] endp associated endpoint */
+void mgcp_conn_free_all(struct mgcp_endpoint *endp)
+{
+ OSMO_ASSERT(endp);
+ OSMO_ASSERT(endp->conns.next != NULL && endp->conns.prev != NULL);
+
+ struct mgcp_conn *conn;
+ struct mgcp_conn *conn_tmp;
+
+ /* Drop all items in the list */
+ llist_for_each_entry_safe(conn, conn_tmp, &endp->conns, entry) {
+ mgcp_conn_free(endp, conn->id);
+ }
+
+ return;
+}
+
+/*! dump basic connection information to human readble string.
+ * \param[in] conn to dump
+ * \returns human readble string */
+char *mgcp_conn_dump(struct mgcp_conn *conn)
+{
+ static char str[256];
+
+ if (!conn) {
+ snprintf(str, sizeof(str), "(null connection)");
+ return str;
+ }
+
+ switch (conn->type) {
+ case MGCP_CONN_TYPE_RTP:
+ /* Dump RTP connection */
+ snprintf(str, sizeof(str), "(%s/rtp, id:%u, ip:%s, "
+ "rtp:%u rtcp:%u)",
+ conn->name,
+ conn->id,
+ inet_ntoa(conn->u.rtp.end.addr),
+ ntohs(conn->u.rtp.end.rtp_port),
+ ntohs(conn->u.rtp.end.rtcp_port));
+ break;
+
+ default:
+ /* Should not happen, we should be able to dump
+ * every possible connection type. */
+ snprintf(str, sizeof(str), "(unknown connection type)");
+ break;
+ }
+
+ return str;
+}
+
+/*! find destination connection on a specific endpoint.
+ * \param[in] conn to search a destination for
+ * \returns destination connection, NULL on failure */
+struct mgcp_conn *mgcp_find_dst_conn(struct mgcp_conn *conn)
+{
+ struct mgcp_endpoint *endp;
+ struct mgcp_conn *partner_conn;
+ endp = conn->endp;
+
+ /*! NOTE: This simply works by grabbing the first connection that is
+ * not the supplied connection, which is suitable for endpoints that
+ * do not serve more than two connections. */
+
+ llist_for_each_entry(partner_conn, &endp->conns, entry) {
+ if (conn != partner_conn) {
+ return partner_conn;
+ }
+ }
+
+ return NULL;
+}
diff --git a/src/libosmo-mgcp/mgcp_ep.c b/src/libosmo-mgcp/mgcp_ep.c
new file mode 100644
index 0000000..72ca691
--- /dev/null
+++ b/src/libosmo-mgcp/mgcp_ep.c
@@ -0,0 +1,32 @@
+/* Endpoint types */
+
+/*
+ * (C) 2017 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
+ * All Rights Reserved
+ *
+ * Author: Philipp Maier
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <osmocom/mgcp/mgcp_ep.h>
+#include <osmocom/mgcp/mgcp_internal.h>
+
+/* Endpoint typeset definition */
+const struct mgcp_endpoint_typeset ep_typeset = {
+ /* Specify endpoint properties for RTP endpoint */
+ .rtp.max_conns = 2,
+ .rtp.dispatch_rtp_cb = mgcp_dispatch_rtp_bridge_cb
+};
diff --git a/src/libosmo-mgcp/mgcp_msg.c b/src/libosmo-mgcp/mgcp_msg.c
new file mode 100644
index 0000000..d686bca
--- /dev/null
+++ b/src/libosmo-mgcp/mgcp_msg.c
@@ -0,0 +1,405 @@
+/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
+/* Message parser/generator utilities */
+
+/*
+ * (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2012 by On-Waves
+ * (C) 2017 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <limits.h>
+
+#include <osmocom/mgcp/mgcp_internal.h>
+#include <osmocom/mgcp/mgcp_common.h>
+#include <osmocom/mgcp/mgcp_msg.h>
+#include <osmocom/mgcp/mgcp_conn.h>
+
+/*! Display an mgcp message on the log output.
+ * \param[in] message mgcp message string
+ * \param[in] len message mgcp message string length
+ * \param[in] preamble string to display in logtext in front of each line */
+void mgcp_disp_msg(unsigned char *message, unsigned int len, char *preamble)
+{
+ unsigned char line[80];
+ unsigned char *ptr;
+ unsigned int consumed = 0;
+ unsigned int consumed_line = 0;
+ unsigned int line_count = 0;
+
+ if (!log_check_level(DLMGCP, LOGL_DEBUG))
+ return;
+
+ while (1) {
+ memset(line, 0, sizeof(line));
+ ptr = line;
+ consumed_line = 0;
+ do {
+ if (*message != '\n' && *message != '\r') {
+ *ptr = *message;
+ ptr++;
+ }
+ message++;
+ consumed++;
+ consumed_line++;
+ } while (*message != '\n' && consumed < len
+ && consumed_line < sizeof(line));
+
+ if (strlen((const char *)line)) {
+ LOGP(DLMGCP, LOGL_DEBUG, "%s: line #%02u: %s\n",
+ preamble, line_count, line);
+ line_count++;
+ }
+
+ if (consumed >= len)
+ return;
+ }
+}
+
+/*! Parse connection mode.
+ * \param[in] mode as string (recvonly, sendrecv, sendonly or loopback)
+ * \param[in] endp pointer to endpoint (only used for log output)
+ * \param[out] associated connection to be modified accordingly
+ * \returns 0 on success, -1 on error */
+int mgcp_parse_conn_mode(const char *mode, struct mgcp_endpoint *endp,
+ struct mgcp_conn *conn)
+{
+ int ret = 0;
+
+ if (!mode) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "endpoint:%x missing connection mode\n",
+ ENDPOINT_NUMBER(endp));
+ return -1;
+ }
+ if (!conn)
+ return -1;
+ if (!endp)
+ return -1;
+
+ if (strcmp(mode, "recvonly") == 0)
+ conn->mode = MGCP_CONN_RECV_ONLY;
+ else if (strcmp(mode, "sendrecv") == 0)
+ conn->mode = MGCP_CONN_RECV_SEND;
+ else if (strcmp(mode, "sendonly") == 0)
+ conn->mode = MGCP_CONN_SEND_ONLY;
+ else if (strcmp(mode, "loopback") == 0)
+ conn->mode = MGCP_CONN_LOOPBACK;
+ else {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "endpoint:%x unknown connection mode: '%s'\n",
+ ENDPOINT_NUMBER(endp), mode);
+ ret = -1;
+ }
+
+ /* Special handling für RTP connections */
+ if (conn->type == MGCP_CONN_TYPE_RTP) {
+ conn->u.rtp.end.output_enabled =
+ conn->mode & MGCP_CONN_SEND_ONLY ? 1 : 0;
+ }
+
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "endpoint:%x conn:%s\n",
+ ENDPOINT_NUMBER(endp), mgcp_conn_dump(conn));
+
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "endpoint:%x connection mode '%s' %d\n",
+ ENDPOINT_NUMBER(endp), mode, conn->mode);
+
+ /* Special handling für RTP connections */
+ if (conn->type == MGCP_CONN_TYPE_RTP) {
+ LOGP(DLMGCP, LOGL_DEBUG, "endpoint:%x output_enabled %d\n",
+ ENDPOINT_NUMBER(endp), conn->u.rtp.end.output_enabled);
+ }
+
+ /* The VTY might change the connection mode at any time, so we have
+ * to hold a copy of the original connection mode */
+ conn->mode_orig = conn->mode;
+
+ return ret;
+}
+
+/* We have a null terminated string with the endpoint name here. We only
+ * support two kinds. Simple ones as seen on the BSC level and the ones
+ * seen on the trunk side. (helper function for find_endpoint()) */
+static struct mgcp_endpoint *find_e1_endpoint(struct mgcp_config *cfg,
+ const char *mgcp)
+{
+ char *rest = NULL;
+ struct mgcp_trunk_config *tcfg;
+ int trunk, endp;
+
+ trunk = strtoul(mgcp + 6, &rest, 10);
+ if (rest == NULL || rest[0] != '/' || trunk < 1) {
+ LOGP(DLMGCP, LOGL_ERROR, "Wrong trunk name '%s'\n", mgcp);
+ return NULL;
+ }
+
+ endp = strtoul(rest + 1, &rest, 10);
+ if (rest == NULL || rest[0] != '@') {
+ LOGP(DLMGCP, LOGL_ERROR, "Wrong endpoint name '%s'\n", mgcp);
+ return NULL;
+ }
+
+ /* signalling is on timeslot 1 */
+ if (endp == 1)
+ return NULL;
+
+ tcfg = mgcp_trunk_num(cfg, trunk);
+ if (!tcfg) {
+ LOGP(DLMGCP, LOGL_ERROR, "The trunk %d is not declared.\n",
+ trunk);
+ return NULL;
+ }
+
+ if (!tcfg->endpoints) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Endpoints of trunk %d not allocated.\n", trunk);
+ return NULL;
+ }
+
+ if (endp < 1 || endp >= tcfg->number_endpoints) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to find endpoint '%s'\n",
+ mgcp);
+ return NULL;
+ }
+
+ return &tcfg->endpoints[endp];
+}
+
+/* Search the endpoint pool for the endpoint that had been selected via the
+ * MGCP message (helper function for mgcp_analyze_header()) */
+static struct mgcp_endpoint *find_endpoint(struct mgcp_config *cfg,
+ const char *mgcp)
+{
+ char *endptr = NULL;
+ unsigned int gw = INT_MAX;
+
+ if (strncmp(mgcp, "ds/e1", 5) == 0)
+ return find_e1_endpoint(cfg, mgcp);
+
+ gw = strtoul(mgcp, &endptr, 16);
+ if (gw > 0 && gw < cfg->trunk.number_endpoints && endptr[0] == '@')
+ return &cfg->trunk.endpoints[gw];
+
+ LOGP(DLMGCP, LOGL_ERROR, "Not able to find the endpoint: '%s'\n", mgcp);
+ return NULL;
+}
+
+/*! Analyze and parse the the hader of an MGCP messeage string.
+ * \param[out] pdata caller provided memory to store the parsing results
+ * \param[in] data mgcp message string
+ * \returns when the status line was complete and transaction_id and
+ * endp out parameters are set, -1 on error */
+int mgcp_parse_header(struct mgcp_parse_data *pdata, char *data)
+{
+ int i = 0;
+ char *elem, *save = NULL;
+
+ /*! This function will parse the header part of the received
+ * MGCP message. The parsing results are stored in pdata.
+ * The function will also automatically search the pool with
+ * available endpoints in order to find an endpoint that matches
+ * the endpoint string in in the header */
+
+ OSMO_ASSERT(data);
+ pdata->trans = "000000";
+
+ for (elem = strtok_r(data, " ", &save); elem;
+ elem = strtok_r(NULL, " ", &save)) {
+ switch (i) {
+ case 0:
+ pdata->trans = elem;
+ break;
+ case 1:
+ pdata->endp = find_endpoint(pdata->cfg, elem);
+ if (!pdata->endp) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Unable to find Endpoint `%s'\n", elem);
+ return -1;
+ }
+ break;
+ case 2:
+ if (strcmp("MGCP", elem)) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "MGCP header parsing error\n");
+ return -1;
+ }
+ break;
+ case 3:
+ if (strcmp("1.0", elem)) {
+ LOGP(DLMGCP, LOGL_ERROR, "MGCP version `%s' "
+ "not supported\n", elem);
+ return -1;
+ }
+ break;
+ }
+ i++;
+ }
+
+ if (i != 4) {
+ LOGP(DLMGCP, LOGL_ERROR, "MGCP status line too short.\n");
+ pdata->trans = "000000";
+ pdata->endp = NULL;
+ return -1;
+ }
+
+ return 0;
+}
+
+/*! Extract OSMUX CID from an MGCP parameter line (string).
+ * \param[in] line single parameter line from the MGCP message
+ * \returns OSMUX CID, -1 on error */
+int mgcp_parse_osmux_cid(const char *line)
+{
+ int osmux_cid;
+
+ if (sscanf(line + 2, "Osmux: %u", &osmux_cid) != 1)
+ return -1;
+
+ if (osmux_cid > OSMUX_CID_MAX) {
+ LOGP(DLMGCP, LOGL_ERROR, "Osmux ID too large: %u > %u\n",
+ osmux_cid, OSMUX_CID_MAX);
+ return -1;
+ }
+ LOGP(DLMGCP, LOGL_DEBUG, "bsc-nat offered Osmux CID %u\n", osmux_cid);
+
+ return osmux_cid;
+}
+
+/*! Check MGCP parameter line (string) for plausibility.
+ * \param[in] endp pointer to endpoint (only used for log output)
+ * \param[in] line single parameter line from the MGCP message
+ * \returns 1 when line seems plausible, 0 on error */
+int mgcp_check_param(const struct mgcp_endpoint *endp, const char *line)
+{
+ const size_t line_len = strlen(line);
+ if (line[0] != '\0' && line_len < 2) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Wrong MGCP option format: '%s' on 0x%x\n",
+ line, ENDPOINT_NUMBER(endp));
+ return 0;
+ }
+
+ /* FIXME: A couple more checks wouldn't hurt... */
+
+ return 1;
+}
+
+/*! Check if the specified callid seems plausible.
+ * \param[in] endp pointer to endpoint
+ * \param{in] callid to verify
+ * \returns 1 when callid seems plausible, 0 on error */
+int mgcp_verify_call_id(struct mgcp_endpoint *endp, const char *callid)
+{
+ /*! This function compares the supplied callid with the called that is
+ * stored in the endpoint structure. */
+
+ if (!endp)
+ return -1;
+ if (!callid)
+ return -1;
+ if (!endp->callid)
+ return -1;
+
+ if (strcmp(endp->callid, callid) != 0) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "endpoint:%x CallIDs does not match '%s' != '%s'\n",
+ ENDPOINT_NUMBER(endp), endp->callid, callid);
+ return -1;
+ }
+
+ return 0;
+}
+
+/*! Check if the specified connection id seems plausible.
+ * \param[in] endp pointer to endpoint
+ * \param{in] connection id to verify
+ * \returns 1 when connection id seems plausible, 0 on error */
+int mgcp_verify_ci(struct mgcp_endpoint *endp, const char *ci)
+{
+ uint32_t id;
+
+ if (!endp)
+ return -1;
+
+ id = strtoul(ci, NULL, 10);
+
+ if (mgcp_conn_get(endp, id))
+ return 0;
+
+ LOGP(DLMGCP, LOGL_ERROR,
+ "endpoint:%x No connection found under ConnectionIdentifier %u\n",
+ ENDPOINT_NUMBER(endp), id);
+
+ return -1;
+}
+
+/*! Extract individual lines from MCGP message.
+ * \param[in] str MGCP message string, consisting of multiple lines
+ * \param{in] saveptr pointer to next line in str
+ * \returns line, NULL when done */
+char *mgcp_strline(char *str, char **saveptr)
+{
+ char *result;
+
+ /*! The function must be called with *str set to the input string
+ * for the first line. After that saveptr will be initalized.
+ * all consecutive lines are extracted by calling the function
+ * with str set to NULL. When done, the function will return NULL
+ * to indicate that all lines have been parsed. */
+
+ if (str)
+ *saveptr = str;
+
+ result = *saveptr;
+
+ if (*saveptr != NULL) {
+ *saveptr = strpbrk(*saveptr, "\r\n");
+
+ if (*saveptr != NULL) {
+ char *eos = *saveptr;
+
+ if ((*saveptr)[0] == '\r' && (*saveptr)[1] == '\n')
+ (*saveptr)++;
+ (*saveptr)++;
+ if ((*saveptr)[0] == '\0')
+ *saveptr = NULL;
+
+ *eos = '\0';
+ }
+ }
+
+ return result;
+}
+
+/*! Parse CI from a given string.
+ * \param[out] caller provided memory to store the result
+ * \param{in] string containing the connection id
+ * \returns 0 on success, -1 on error */
+int mgcp_parse_ci(uint32_t *conn_id, const char *ci)
+{
+
+ OSMO_ASSERT(conn_id);
+
+ if (!ci)
+ return -1;
+
+ *conn_id = strtoul(ci, NULL, 10);
+
+ return 0;
+}
diff --git a/src/libosmo-mgcp/mgcp_network.c b/src/libosmo-mgcp/mgcp_network.c
new file mode 100644
index 0000000..d51b829
--- /dev/null
+++ b/src/libosmo-mgcp/mgcp_network.c
@@ -0,0 +1,1264 @@
+/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
+/* The protocol implementation */
+
+/*
+ * (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2012 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <time.h>
+#include <limits.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/select.h>
+#include <osmocom/core/socket.h>
+#include <osmocom/netif/rtp.h>
+#include <osmocom/mgcp/mgcp.h>
+#include <osmocom/mgcp/mgcp_common.h>
+#include <osmocom/mgcp/mgcp_internal.h>
+#include <osmocom/mgcp/mgcp_stat.h>
+#include <osmocom/mgcp/osmux.h>
+#include <osmocom/mgcp/mgcp_conn.h>
+#include <osmocom/mgcp/mgcp_ep.h>
+#include <osmocom/mgcp/debug.h>
+
+#define RTP_SEQ_MOD (1 << 16)
+#define RTP_MAX_DROPOUT 3000
+#define RTP_MAX_MISORDER 100
+#define RTP_BUF_SIZE 4096
+
+enum {
+ MGCP_PROTO_RTP,
+ MGCP_PROTO_RTCP,
+};
+
+/*! Determine the local rtp bind IP-address.
+ * \param[out] addr caller provided memory to store the resulting IP-Address
+ * \param[in] endp mgcp endpoint, that holds a copy of the VTY parameters
+ *
+ * The local bind IP-address is automatically selected by probing the
+ * IP-Address of the interface that is pointing towards the remote IP-Address,
+ * if no remote IP-Address is known yet, the statically configured
+ * IP-Addresses are used as fallback. */
+void mgcp_get_local_addr(char *addr, struct mgcp_conn_rtp *conn)
+{
+
+ struct mgcp_endpoint *endp;
+ int rc;
+ endp = conn->conn->endp;
+
+ /* Try probing the local IP-Address */
+ if (endp->cfg->net_ports.bind_addr_probe && conn->end.addr.s_addr != 0) {
+ rc = osmo_sock_local_ip(addr, inet_ntoa(conn->end.addr));
+ if (rc < 0)
+ LOGP(DRTP, LOGL_ERROR,
+ "endpoint:%x CI:%i local interface auto detection failed, using configured addresses...\n",
+ ENDPOINT_NUMBER(endp), conn->conn->id);
+ else {
+ LOGP(DRTP, LOGL_DEBUG,
+ "endpoint:%x CI:%i selected local rtp bind ip %s by probing using remote ip %s\n",
+ ENDPOINT_NUMBER(endp), conn->conn->id, addr,
+ inet_ntoa(conn->end.addr));
+ return;
+ }
+ }
+
+ /* Select from preconfigured IP-Addresses */
+ if (endp->cfg->net_ports.bind_addr) {
+ /* Check there is a bind IP for the RTP traffic configured,
+ * if so, use that IP-Address */
+ strncpy(addr, endp->cfg->net_ports.bind_addr, INET_ADDRSTRLEN);
+ LOGP(DRTP, LOGL_DEBUG,
+ "endpoint:%x CI:%i using configured rtp bind ip as local bind ip %s\n",
+ ENDPOINT_NUMBER(endp), conn->conn->id, addr);
+ } else {
+ /* No specific bind IP is configured for the RTP traffic, so
+ * assume the IP where we listen for incoming MGCP messages
+ * as bind IP */
+ strncpy(addr, endp->cfg->source_addr, INET_ADDRSTRLEN);
+ LOGP(DRTP, LOGL_DEBUG,
+ "endpoint:%x CI:%i using mgcp bind ip as local rtp bind ip: %s\n",
+ ENDPOINT_NUMBER(endp), conn->conn->id, addr);
+ }
+}
+
+/* This does not need to be a precision timestamp and
+ * is allowed to wrap quite fast. The returned value is
+ * 1/codec_rate seconds. */
+static uint32_t get_current_ts(unsigned codec_rate)
+{
+ struct timespec tp;
+ uint64_t ret;
+
+ if (!codec_rate)
+ return 0;
+
+ memset(&tp, 0, sizeof(tp));
+ if (clock_gettime(CLOCK_MONOTONIC, &tp) != 0)
+ LOGP(DRTP, LOGL_NOTICE, "Getting the clock failed.\n");
+
+ /* convert it to 1/unit seconds */
+ ret = tp.tv_sec;
+ ret *= codec_rate;
+ ret += (int64_t) tp.tv_nsec * codec_rate / 1000 / 1000 / 1000;
+
+ return ret;
+}
+
+/*! send udp packet.
+ * \param[in] fd associated file descriptor
+ * \param[in] addr destination ip-address
+ * \param[in] port destination UDP port
+ * \param[in] buf buffer that holds the data to be send
+ * \param[in] len length of the data to be sent
+ * \returns bytes sent, -1 on error */
+int mgcp_udp_send(int fd, struct in_addr *addr, int port, char *buf, int len)
+{
+ struct sockaddr_in out;
+
+ LOGP(DRTP, LOGL_DEBUG,
+ "sending %i bytes length packet to %s:%u ...\n",
+ len, inet_ntoa(*addr), ntohs(port));
+
+ out.sin_family = AF_INET;
+ out.sin_port = port;
+ memcpy(&out.sin_addr, addr, sizeof(*addr));
+
+ return sendto(fd, buf, len, 0, (struct sockaddr *)&out, sizeof(out));
+}
+
+/*! send RTP dummy packet (to keep NAT connection open).
+ * \param[in] endp mcgp endpoint that holds the RTP connection
+ * \param[in] conn associated RTP connection
+ * \returns bytes sent, -1 on error */
+int mgcp_send_dummy(struct mgcp_endpoint *endp, struct mgcp_conn_rtp *conn)
+{
+ static char buf[] = { MGCP_DUMMY_LOAD };
+ int rc;
+ int was_rtcp = 0;
+
+ OSMO_ASSERT(endp);
+ OSMO_ASSERT(conn);
+
+ LOGP(DRTP, LOGL_DEBUG,
+ "endpoint:%x sending dummy packet...\n", ENDPOINT_NUMBER(endp));
+ LOGP(DRTP, LOGL_DEBUG, "endpoint:%x conn:%s\n",
+ ENDPOINT_NUMBER(endp), mgcp_conn_dump(conn->conn));
+
+ rc = mgcp_udp_send(conn->end.rtp.fd, &conn->end.addr,
+ conn->end.rtp_port, buf, 1);
+
+ if (rc == -1)
+ goto failed;
+
+ if (endp->tcfg->omit_rtcp)
+ return rc;
+
+ was_rtcp = 1;
+ rc = mgcp_udp_send(conn->end.rtcp.fd, &conn->end.addr,
+ conn->end.rtcp_port, buf, 1);
+
+ if (rc >= 0)
+ return rc;
+
+failed:
+ LOGP(DRTP, LOGL_ERROR,
+ "endpoint:%x Failed to send dummy %s packet.\n",
+ ENDPOINT_NUMBER(endp), was_rtcp ? "RTCP" : "RTP");
+
+ return -1;
+}
+
+/* Compute timestamp alignment error */
+static int32_t ts_alignment_error(struct mgcp_rtp_stream_state *sstate,
+ int ptime, uint32_t timestamp)
+{
+ int32_t timestamp_delta;
+
+ if (ptime == 0)
+ return 0;
+
+ /* Align according to: T - Tlast = k * Tptime */
+ timestamp_delta = timestamp - sstate->last_timestamp;
+
+ return timestamp_delta % ptime;
+}
+
+/* Check timestamp and sequence number for plausibility */
+static int check_rtp_timestamp(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_state *state,
+ struct mgcp_rtp_stream_state *sstate,
+ struct mgcp_rtp_end *rtp_end,
+ struct sockaddr_in *addr,
+ uint16_t seq, uint32_t timestamp,
+ const char *text, int32_t * tsdelta_out)
+{
+ int32_t tsdelta;
+ int32_t timestamp_error;
+
+ /* Not fully intialized, skip */
+ if (sstate->last_tsdelta == 0 && timestamp == sstate->last_timestamp)
+ return 0;
+
+ if (seq == sstate->last_seq) {
+ if (timestamp != sstate->last_timestamp) {
+ sstate->err_ts_counter += 1;
+ LOGP(DRTP, LOGL_ERROR,
+ "The %s timestamp delta is != 0 but the sequence "
+ "number %d is the same, "
+ "TS offset: %d, SeqNo offset: %d "
+ "on 0x%x SSRC: %u timestamp: %u "
+ "from %s:%d\n",
+ text, seq,
+ state->timestamp_offset, state->seq_offset,
+ ENDPOINT_NUMBER(endp), sstate->ssrc, timestamp,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port));
+ }
+ return 0;
+ }
+
+ tsdelta =
+ (int32_t)(timestamp - sstate->last_timestamp) /
+ (int16_t)(seq - sstate->last_seq);
+
+ if (tsdelta == 0) {
+ /* Don't update *tsdelta_out */
+ LOGP(DRTP, LOGL_NOTICE,
+ "The %s timestamp delta is %d "
+ "on 0x%x SSRC: %u timestamp: %u "
+ "from %s:%d\n",
+ text, tsdelta,
+ ENDPOINT_NUMBER(endp), sstate->ssrc, timestamp,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port));
+
+ return 0;
+ }
+
+ if (sstate->last_tsdelta != tsdelta) {
+ if (sstate->last_tsdelta) {
+ LOGP(DRTP, LOGL_INFO,
+ "The %s timestamp delta changes from %d to %d "
+ "on 0x%x SSRC: %u timestamp: %u from %s:%d\n",
+ text, sstate->last_tsdelta, tsdelta,
+ ENDPOINT_NUMBER(endp), sstate->ssrc, timestamp,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port));
+ }
+ }
+
+ if (tsdelta_out)
+ *tsdelta_out = tsdelta;
+
+ timestamp_error =
+ ts_alignment_error(sstate, state->packet_duration, timestamp);
+
+ if (timestamp_error) {
+ sstate->err_ts_counter += 1;
+ LOGP(DRTP, LOGL_NOTICE,
+ "The %s timestamp has an alignment error of %d "
+ "on 0x%x SSRC: %u "
+ "SeqNo delta: %d, TS delta: %d, dTS/dSeq: %d "
+ "from %s:%d. ptime: %d\n",
+ text, timestamp_error,
+ ENDPOINT_NUMBER(endp), sstate->ssrc,
+ (int16_t)(seq - sstate->last_seq),
+ (int32_t)(timestamp - sstate->last_timestamp),
+ tsdelta,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port),
+ state->packet_duration);
+ }
+ return 1;
+}
+
+/* Set the timestamp offset according to the packet duration. */
+static int adjust_rtp_timestamp_offset(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_state *state,
+ struct mgcp_rtp_end *rtp_end,
+ struct sockaddr_in *addr,
+ int16_t delta_seq, uint32_t in_timestamp)
+{
+ int32_t tsdelta = state->packet_duration;
+ int timestamp_offset;
+ uint32_t out_timestamp;
+
+ if (tsdelta == 0) {
+ tsdelta = state->out_stream.last_tsdelta;
+ if (tsdelta != 0) {
+ LOGP(DRTP, LOGL_NOTICE,
+ "A fixed packet duration is not available on 0x%x, "
+ "using last output timestamp delta instead: %d "
+ "from %s:%d\n",
+ ENDPOINT_NUMBER(endp), tsdelta,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port));
+ } else {
+ tsdelta = rtp_end->codec.rate * 20 / 1000;
+ LOGP(DRTP, LOGL_NOTICE,
+ "Fixed packet duration and last timestamp delta "
+ "are not available on 0x%x, "
+ "using fixed 20ms instead: %d "
+ "from %s:%d\n",
+ ENDPOINT_NUMBER(endp), tsdelta,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port));
+ }
+ }
+
+ out_timestamp = state->out_stream.last_timestamp + delta_seq * tsdelta;
+ timestamp_offset = out_timestamp - in_timestamp;
+
+ if (state->timestamp_offset != timestamp_offset) {
+ state->timestamp_offset = timestamp_offset;
+
+ LOGP(DRTP, LOGL_NOTICE,
+ "Timestamp offset change on 0x%x SSRC: %u "
+ "SeqNo delta: %d, TS offset: %d, "
+ "from %s:%d\n",
+ ENDPOINT_NUMBER(endp), state->in_stream.ssrc,
+ delta_seq, state->timestamp_offset,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port));
+ }
+
+ return timestamp_offset;
+}
+
+/* Set the timestamp offset according to the packet duration. */
+static int align_rtp_timestamp_offset(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_state *state,
+ struct mgcp_rtp_end *rtp_end,
+ struct sockaddr_in *addr,
+ uint32_t timestamp)
+{
+ int ts_error = 0;
+ int ts_check = 0;
+ int ptime = state->packet_duration;
+
+ /* Align according to: T + Toffs - Tlast = k * Tptime */
+
+ ts_error = ts_alignment_error(&state->out_stream, ptime,
+ timestamp + state->timestamp_offset);
+
+ /* If there is an alignment error, we have to compensate it */
+ if (ts_error) {
+ state->timestamp_offset += ptime - ts_error;
+
+ LOGP(DRTP, LOGL_NOTICE,
+ "Corrected timestamp alignment error of %d on 0x%x SSRC: %u "
+ "new TS offset: %d, "
+ "from %s:%d\n",
+ ts_error,
+ ENDPOINT_NUMBER(endp), state->in_stream.ssrc,
+ state->timestamp_offset, inet_ntoa(addr->sin_addr),
+ ntohs(addr->sin_port));
+ }
+
+ /* Check we really managed to compensate the timestamp
+ * offset. There should not be any remaining error, failing
+ * here would point to a serous problem with the alingnment
+ * error computation fuction */
+ ts_check = ts_alignment_error(&state->out_stream, ptime,
+ timestamp + state->timestamp_offset);
+ OSMO_ASSERT(ts_check == 0);
+
+ /* Return alignment error before compensation */
+ return ts_error;
+}
+
+/*! dummy callback to disable transcoding (see also cfg->rtp_processing_cb).
+ * \param[in] associated endpoint
+ * \param[in] destination RTP end
+ * \param[in,out] pointer to buffer with voice data
+ * \param[in] voice data length
+ * \param[in] maxmimum size of caller provided voice data buffer
+ * \returns ignores input parameters, return always 0 */
+int mgcp_rtp_processing_default(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_end *dst_end,
+ char *data, int *len, int buf_size)
+{
+ LOGP(DRTP, LOGL_DEBUG, "endpoint:%x transcoding disabled\n",
+ ENDPOINT_NUMBER(endp));
+ return 0;
+}
+
+/*! dummy callback to disable transcoding (see also cfg->setup_rtp_processing_cb).
+ * \param[in] associated endpoint
+ * \param[in] destination RTP end
+ * \param[in] source RTP end
+ * \returns ignores input parameters, return always 0 */
+int mgcp_setup_rtp_processing_default(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_end *dst_end,
+ struct mgcp_rtp_end *src_end)
+{
+ LOGP(DRTP, LOGL_DEBUG, "endpoint:%x transcoding disabled\n",
+ ENDPOINT_NUMBER(endp));
+ return 0;
+}
+
+void mgcp_get_net_downlink_format_default(struct mgcp_endpoint *endp,
+ int *payload_type,
+ const char **audio_name,
+ const char **fmtp_extra,
+ struct mgcp_conn_rtp *conn)
+{
+ LOGP(DRTP, LOGL_DEBUG,
+ "endpoint:%x conn:%s using format defaults\n",
+ ENDPOINT_NUMBER(endp), mgcp_conn_dump(conn->conn));
+
+ *payload_type = conn->end.codec.payload_type;
+ *audio_name = conn->end.codec.audio_name;
+ *fmtp_extra = conn->end.fmtp_extra;
+}
+
+void mgcp_rtp_annex_count(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_state *state, const uint16_t seq,
+ const int32_t transit, const uint32_t ssrc)
+{
+ int32_t d;
+
+ /* initialize or re-initialize */
+ if (!state->stats_initialized || state->stats_ssrc != ssrc) {
+ state->stats_initialized = 1;
+ state->stats_base_seq = seq;
+ state->stats_max_seq = seq - 1;
+ state->stats_ssrc = ssrc;
+ state->stats_jitter = 0;
+ state->stats_transit = transit;
+ state->stats_cycles = 0;
+ } else {
+ uint16_t udelta;
+
+ /* The below takes the shape of the validation of
+ * Appendix A. Check if there is something weird with
+ * the sequence number, otherwise check for a wrap
+ * around in the sequence number.
+ * It can't wrap during the initialization so let's
+ * skip it here. The Appendix A probably doesn't have
+ * this issue because of the probation. */
+ udelta = seq - state->stats_max_seq;
+ if (udelta < RTP_MAX_DROPOUT) {
+ if (seq < state->stats_max_seq)
+ state->stats_cycles += RTP_SEQ_MOD;
+ } else if (udelta <= RTP_SEQ_MOD - RTP_MAX_MISORDER) {
+ LOGP(DRTP, LOGL_NOTICE,
+ "RTP seqno made a very large jump on 0x%x delta: %u\n",
+ ENDPOINT_NUMBER(endp), udelta);
+ }
+ }
+
+ /* Calculate the jitter between the two packages. The TS should be
+ * taken closer to the read function. This was taken from the
+ * Appendix A of RFC 3550. Timestamp and arrival_time have a 1/rate
+ * resolution. */
+ d = transit - state->stats_transit;
+ state->stats_transit = transit;
+ if (d < 0)
+ d = -d;
+ state->stats_jitter += d - ((state->stats_jitter + 8) >> 4);
+ state->stats_max_seq = seq;
+}
+
+/* The RFC 3550 Appendix A assumes there are multiple sources but
+ * some of the supported endpoints (e.g. the nanoBTS) can only handle
+ * one source and this code will patch RTP header to appear as if there
+ * is only one source.
+ * There is also no probation period for new sources. Every RTP header
+ * we receive will be seen as a switch in streams. */
+void mgcp_patch_and_count(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_state *state,
+ struct mgcp_rtp_end *rtp_end,
+ struct sockaddr_in *addr, char *data, int len)
+{
+ uint32_t arrival_time;
+ int32_t transit;
+ uint16_t seq;
+ uint32_t timestamp, ssrc;
+ struct rtp_hdr *rtp_hdr;
+ int payload = rtp_end->codec.payload_type;
+
+ if (len < sizeof(*rtp_hdr))
+ return;
+
+ rtp_hdr = (struct rtp_hdr *)data;
+ seq = ntohs(rtp_hdr->sequence);
+ timestamp = ntohl(rtp_hdr->timestamp);
+ arrival_time = get_current_ts(rtp_end->codec.rate);
+ ssrc = ntohl(rtp_hdr->ssrc);
+ transit = arrival_time - timestamp;
+
+ mgcp_rtp_annex_count(endp, state, seq, transit, ssrc);
+
+ if (!state->initialized) {
+ state->initialized = 1;
+ state->in_stream.last_seq = seq - 1;
+ state->in_stream.ssrc = state->orig_ssrc = ssrc;
+ state->in_stream.last_tsdelta = 0;
+ state->packet_duration =
+ mgcp_rtp_packet_duration(endp, rtp_end);
+ state->out_stream = state->in_stream;
+ state->out_stream.last_timestamp = timestamp;
+ state->out_stream.ssrc = ssrc - 1; /* force output SSRC change */
+ LOGP(DRTP, LOGL_INFO,
+ "endpoint:%x initializing stream, SSRC: %u timestamp: %u "
+ "pkt-duration: %d, from %s:%d\n",
+ ENDPOINT_NUMBER(endp), state->in_stream.ssrc,
+ state->seq_offset, state->packet_duration,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port));
+ if (state->packet_duration == 0) {
+ state->packet_duration =
+ rtp_end->codec.rate * 20 / 1000;
+ LOGP(DRTP, LOGL_NOTICE,
+ "endpoint:%x fixed packet duration is not available, "
+ "using fixed 20ms instead: %d from %s:%d\n",
+ ENDPOINT_NUMBER(endp), state->packet_duration,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port));
+ }
+ } else if (state->in_stream.ssrc != ssrc) {
+ LOGP(DRTP, LOGL_NOTICE,
+ "endpoint:%x SSRC changed: %u -> %u "
+ "from %s:%d\n",
+ ENDPOINT_NUMBER(endp),
+ state->in_stream.ssrc, rtp_hdr->ssrc,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port));
+
+ state->in_stream.ssrc = ssrc;
+ if (rtp_end->force_constant_ssrc) {
+ int16_t delta_seq;
+
+ /* Always increment seqno by 1 */
+ state->seq_offset =
+ (state->out_stream.last_seq + 1) - seq;
+
+ /* Estimate number of packets that would have been sent */
+ delta_seq =
+ (arrival_time - state->in_stream.last_arrival_time
+ + state->packet_duration / 2) /
+ state->packet_duration;
+
+ adjust_rtp_timestamp_offset(endp, state, rtp_end, addr,
+ delta_seq, timestamp);
+
+ state->patch_ssrc = 1;
+ ssrc = state->orig_ssrc;
+ if (rtp_end->force_constant_ssrc != -1)
+ rtp_end->force_constant_ssrc -= 1;
+
+ LOGP(DRTP, LOGL_NOTICE,
+ "endpoint:%x SSRC patching enabled, SSRC: %u "
+ "SeqNo offset: %d, TS offset: %d "
+ "from %s:%d\n",
+ ENDPOINT_NUMBER(endp), state->in_stream.ssrc,
+ state->seq_offset, state->timestamp_offset,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port));
+ }
+
+ state->in_stream.last_tsdelta = 0;
+ } else {
+ /* Compute current per-packet timestamp delta */
+ check_rtp_timestamp(endp, state, &state->in_stream, rtp_end,
+ addr, seq, timestamp, "input",
+ &state->in_stream.last_tsdelta);
+
+ if (state->patch_ssrc)
+ ssrc = state->orig_ssrc;
+ }
+
+ /* Save before patching */
+ state->in_stream.last_timestamp = timestamp;
+ state->in_stream.last_seq = seq;
+ state->in_stream.last_arrival_time = arrival_time;
+
+ if (rtp_end->force_aligned_timing &&
+ state->out_stream.ssrc == ssrc && state->packet_duration)
+ /* Align the timestamp offset */
+ align_rtp_timestamp_offset(endp, state, rtp_end, addr,
+ timestamp);
+
+ /* Store the updated SSRC back to the packet */
+ if (state->patch_ssrc)
+ rtp_hdr->ssrc = htonl(ssrc);
+
+ /* Apply the offset and store it back to the packet.
+ * This won't change anything if the offset is 0, so the conditional is
+ * omitted. */
+ seq += state->seq_offset;
+ rtp_hdr->sequence = htons(seq);
+ timestamp += state->timestamp_offset;
+ rtp_hdr->timestamp = htonl(timestamp);
+
+ /* Check again, whether the timestamps are still valid */
+ if (state->out_stream.ssrc == ssrc)
+ check_rtp_timestamp(endp, state, &state->out_stream, rtp_end,
+ addr, seq, timestamp, "output",
+ &state->out_stream.last_tsdelta);
+
+ /* Save output values */
+ state->out_stream.last_seq = seq;
+ state->out_stream.last_timestamp = timestamp;
+ state->out_stream.ssrc = ssrc;
+
+ if (payload < 0)
+ return;
+
+#if 0
+ DEBUGP(DRTP,
+ "endpoint:%x payload hdr payload %u -> endp payload %u\n",
+ ENDPOINT_NUMBER(endp), rtp_hdr->payload_type, payload);
+ rtp_hdr->payload_type = payload;
+#endif
+}
+
+/* Forward data to a debug tap. This is debug function that is intended for
+ * debugging the voice traffic with tools like gstreamer */
+static void forward_data(int fd, struct mgcp_rtp_tap *tap, const char *buf,
+ int len)
+{
+ int rc;
+
+ if (!tap->enabled)
+ return;
+
+ rc = sendto(fd, buf, len, 0, (struct sockaddr *)&tap->forward,
+ sizeof(tap->forward));
+
+ if (rc < 0)
+ LOGP(DRTP, LOGL_ERROR,
+ "Forwarding tapped (debug) voice data failed.\n");
+}
+
+/*! Send RTP/RTCP data to a specified destination connection.
+ * \param[in] endp associated endpoint (for configuration, logging)
+ * \param[in] is_rtp flag to specify if the packet is of type RTP or RTCP
+ * \param[in] spoofed source address (set to NULL to disable)
+ * \param[in] buf buffer that contains the RTP/RTCP data
+ * \param[in] len length of the buffer that contains the RTP/RTCP data
+ * \param[in] conn_src associated source connection
+ * \param[in] conn_dst associated destination connection
+ * \returns 0 on success, -1 on ERROR */
+int mgcp_send(struct mgcp_endpoint *endp, int is_rtp, struct sockaddr_in *addr,
+ char *buf, int len, struct mgcp_conn_rtp *conn_src,
+ struct mgcp_conn_rtp *conn_dst)
+{
+ /*! When no destination connection is available (e.g. when only one
+ * connection in loopback mode exists), then the source connection
+ * shall be specified as destination connection */
+
+ struct mgcp_trunk_config *tcfg = endp->tcfg;
+ struct mgcp_rtp_end *rtp_end;
+ struct mgcp_rtp_state *rtp_state;
+ char *dest_name;
+
+ OSMO_ASSERT(conn_src);
+ OSMO_ASSERT(conn_dst);
+
+ if (is_rtp) {
+ LOGP(DRTP, LOGL_DEBUG,
+ "endpoint:%x delivering RTP packet...\n",
+ ENDPOINT_NUMBER(endp));
+ } else {
+ LOGP(DRTP, LOGL_DEBUG,
+ "endpoint:%x delivering RTCP packet...\n",
+ ENDPOINT_NUMBER(endp));
+ }
+
+ LOGP(DRTP, LOGL_DEBUG,
+ "endpoint:%x loop:%d, mode:%d ",
+ ENDPOINT_NUMBER(endp), tcfg->audio_loop, conn_src->conn->mode);
+ if (conn_src->conn->mode == MGCP_CONN_LOOPBACK)
+ LOGPC(DRTP, LOGL_DEBUG, "(loopback)\n");
+ else
+ LOGPC(DRTP, LOGL_DEBUG, "\n");
+
+ /* Note: In case of loopback configuration, both, the source and the
+ * destination will point to the same connection. */
+ rtp_end = &conn_dst->end;
+ rtp_state = &conn_src->state;
+ dest_name = conn_dst->conn->name;
+
+ if (!rtp_end->output_enabled) {
+ rtp_end->dropped_packets += 1;
+ LOGP(DRTP, LOGL_DEBUG,
+ "endpoint:%x output disabled, drop to %s %s "
+ "rtp_port:%u rtcp_port:%u\n",
+ ENDPOINT_NUMBER(endp),
+ dest_name,
+ inet_ntoa(rtp_end->addr),
+ ntohs(rtp_end->rtp_port), ntohs(rtp_end->rtcp_port)
+ );
+ } else if (is_rtp) {
+ int cont;
+ int nbytes = 0;
+ int buflen = len;
+ do {
+ /* Run transcoder */
+ cont = endp->cfg->rtp_processing_cb(endp, rtp_end,
+ buf, &buflen,
+ RTP_BUF_SIZE);
+ if (cont < 0)
+ break;
+
+ if (addr)
+ mgcp_patch_and_count(endp, rtp_state, rtp_end,
+ addr, buf, buflen);
+ LOGP(DRTP, LOGL_DEBUG,
+ "endpoint:%x process/send to %s %s "
+ "rtp_port:%u rtcp_port:%u\n",
+ ENDPOINT_NUMBER(endp), dest_name,
+ inet_ntoa(rtp_end->addr), ntohs(rtp_end->rtp_port),
+ ntohs(rtp_end->rtcp_port)
+ );
+
+ /* Forward a copy of the RTP data to a debug ip/port */
+ forward_data(rtp_end->rtp.fd, &conn_src->tap_out,
+ buf, buflen);
+
+ /* FIXME: HACK HACK HACK. See OS#2459.
+ * The ip.access nano3G needs the first RTP payload's first two bytes to read hex
+ * 'e400', or it will reject the RAB assignment. It seems to not harm other femto
+ * cells (as long as we patch only the first RTP payload in each stream).
+ */
+ if (!rtp_state->patched_first_rtp_payload) {
+ uint8_t *data = (uint8_t *) & buf[12];
+ data[0] = 0xe4;
+ data[1] = 0x00;
+ rtp_state->patched_first_rtp_payload = true;
+ }
+
+ len = mgcp_udp_send(rtp_end->rtp.fd,
+ &rtp_end->addr,
+ rtp_end->rtp_port, buf, buflen);
+
+ if (len <= 0)
+ return len;
+
+ conn_dst->end.packets_tx += 1;
+ conn_dst->end.octets_tx += len;
+
+ nbytes += len;
+ buflen = cont;
+ } while (buflen > 0);
+ return nbytes;
+ } else if (!tcfg->omit_rtcp) {
+ LOGP(DRTP, LOGL_DEBUG,
+ "endpoint:%x send to %s %s rtp_port:%u rtcp_port:%u\n",
+ ENDPOINT_NUMBER(endp),
+ dest_name,
+ inet_ntoa(rtp_end->addr),
+ ntohs(rtp_end->rtp_port), ntohs(rtp_end->rtcp_port)
+ );
+
+ len = mgcp_udp_send(rtp_end->rtcp.fd,
+ &rtp_end->addr,
+ rtp_end->rtcp_port, buf, len);
+
+ conn_dst->end.packets_tx += 1;
+ conn_dst->end.octets_tx += len;
+
+ return len;
+ }
+
+ return 0;
+}
+
+/* Helper function for mgcp_recv(),
+ Receive one RTP Packet + Originating address from file descriptor */
+static int receive_from(struct mgcp_endpoint *endp, int fd,
+ struct sockaddr_in *addr, char *buf, int bufsize)
+{
+ int rc;
+ socklen_t slen = sizeof(*addr);
+ struct sockaddr_in addr_sink;
+ char buf_sink[RTP_BUF_SIZE];
+ bool tossed = false;
+
+ if (!addr)
+ addr = &addr_sink;
+ if (!buf) {
+ tossed = true;
+ buf = buf_sink;
+ bufsize = sizeof(buf_sink);
+ }
+
+ rc = recvfrom(fd, buf, bufsize, 0, (struct sockaddr *)addr, &slen);
+
+ LOGP(DRTP, LOGL_DEBUG,
+ "receiving %u bytes length packet from %s:%u ...\n",
+ rc, inet_ntoa(addr->sin_addr), ntohs(addr->sin_port));
+
+ if (rc < 0) {
+ LOGP(DRTP, LOGL_ERROR,
+ "endpoint:%x failed to receive packet, errno: %d/%s\n",
+ ENDPOINT_NUMBER(endp), errno, strerror(errno));
+ return -1;
+ }
+
+ if (tossed) {
+ LOGP(DRTP, LOGL_ERROR, "endpoint:%x packet tossed\n",
+ ENDPOINT_NUMBER(endp));
+ }
+
+ return rc;
+}
+
+/* Check if the origin (addr) matches the address/port data of the RTP
+ * connections. */
+static int check_rtp_origin(struct mgcp_conn_rtp *conn,
+ struct sockaddr_in *addr)
+{
+ struct mgcp_endpoint *endp;
+ endp = conn->conn->endp;
+
+ /* Note: Check if the inbound RTP data comes from the same host to
+ * which we send our outgoing RTP traffic. */
+ if (memcmp(&addr->sin_addr, &conn->end.addr, sizeof(addr->sin_addr))
+ != 0) {
+ LOGP(DRTP, LOGL_ERROR,
+ "endpoint:%x data from wrong address: %s, ",
+ ENDPOINT_NUMBER(endp), inet_ntoa(addr->sin_addr));
+ LOGPC(DRTP, LOGL_ERROR, "expected: %s\n",
+ inet_ntoa(conn->end.addr));
+ LOGP(DRTP, LOGL_ERROR, "endpoint:%x packet tossed\n",
+ ENDPOINT_NUMBER(endp));
+ return -1;
+ }
+
+ /* Note: Usually the remote remote port of the data we receive will be
+ * the same as the remote port where we transmit outgoing RTP traffic
+ * to (set by MDCX). We use this to check the origin of the data for
+ * plausibility. */
+ if (conn->end.rtp_port != addr->sin_port &&
+ conn->end.rtcp_port != addr->sin_port) {
+ LOGP(DRTP, LOGL_ERROR,
+ "endpoint:%x data from wrong source port: %d, ",
+ ENDPOINT_NUMBER(endp), ntohs(addr->sin_port));
+ LOGPC(DRTP, LOGL_ERROR,
+ "expected: %d for RTP or %d for RTCP\n",
+ ntohs(conn->end.rtp_port), ntohs(conn->end.rtcp_port));
+ LOGP(DRTP, LOGL_ERROR, "endpoint:%x packet tossed\n",
+ ENDPOINT_NUMBER(endp));
+ return -1;
+ }
+
+ return 0;
+}
+
+/* Check the if the destination address configuration of an RTP connection
+ * makes sense */
+static int check_rtp_destin(struct mgcp_conn_rtp *conn)
+{
+ struct mgcp_endpoint *endp;
+ endp = conn->conn->endp;
+
+ if (strcmp(inet_ntoa(conn->end.addr), "0.0.0.0") == 0) {
+ LOGP(DRTP, LOGL_ERROR,
+ "endpoint:%x destination IP-address is invalid\n",
+ ENDPOINT_NUMBER(endp));
+ return -1;
+ }
+
+ if (conn->end.rtp_port == 0) {
+ LOGP(DRTP, LOGL_ERROR,
+ "endpoint:%x destination rtp port is invalid\n",
+ ENDPOINT_NUMBER(endp));
+ return -1;
+ }
+
+ return 0;
+}
+
+/* Receive RTP data from a specified source connection and dispatch it to a
+ * destination connection. */
+static int mgcp_recv(int *proto, struct sockaddr_in *addr, char *buf,
+ unsigned int buf_size, struct osmo_fd *fd)
+{
+ struct mgcp_endpoint *endp;
+ struct mgcp_conn_rtp *conn;
+ struct mgcp_trunk_config *tcfg;
+ int rc;
+
+ conn = (struct mgcp_conn_rtp*) fd->data;
+ endp = conn->conn->endp;
+ tcfg = endp->tcfg;
+
+ LOGP(DRTP, LOGL_DEBUG, "endpoint:%x receiving RTP/RTCP packet...\n",
+ ENDPOINT_NUMBER(endp));
+
+ rc = receive_from(endp, fd->fd, addr, buf, buf_size);
+ if (rc <= 0)
+ return -1;
+ *proto = fd == &conn->end.rtp ? MGCP_PROTO_RTP : MGCP_PROTO_RTCP;
+
+ LOGP(DRTP, LOGL_DEBUG, "endpoint:%x ", ENDPOINT_NUMBER(endp));
+ LOGPC(DRTP, LOGL_DEBUG, "receiveing from %s %s %d\n",
+ conn->conn->name, inet_ntoa(addr->sin_addr),
+ ntohs(addr->sin_port));
+ LOGP(DRTP, LOGL_DEBUG, "endpoint:%x conn:%s\n", ENDPOINT_NUMBER(endp),
+ mgcp_conn_dump(conn->conn));
+
+ /* Check if the origin of the RTP packet seems plausible */
+ if (tcfg->rtp_accept_all == 0) {
+ if (check_rtp_origin(conn, addr) != 0)
+ return -1;
+ }
+
+ /* Filter out dummy message */
+ if (rc == 1 && buf[0] == MGCP_DUMMY_LOAD) {
+ LOGP(DRTP, LOGL_NOTICE,
+ "endpoint:%x dummy message received\n",
+ ENDPOINT_NUMBER(endp));
+ LOGP(DRTP, LOGL_ERROR,
+ "endpoint:%x packet tossed\n", ENDPOINT_NUMBER(endp));
+ return 0;
+ }
+
+ /* Increment RX statistics */
+ conn->end.packets_rx += 1;
+ conn->end.octets_rx += rc;
+
+ /* Forward a copy of the RTP data to a debug ip/port */
+ forward_data(fd->fd, &conn->tap_in, buf, rc);
+
+ return rc;
+}
+
+/* Send RTP data. Possible options are standard RTP packet
+ * transmission or trsmission via an osmux connection */
+static int mgcp_send_rtp(int proto, struct sockaddr_in *addr, char *buf,
+ unsigned int buf_size,
+ struct mgcp_conn_rtp *conn_src,
+ struct mgcp_conn_rtp *conn_dst)
+{
+ struct mgcp_endpoint *endp;
+ endp = conn_src->conn->endp;
+
+ LOGP(DRTP, LOGL_DEBUG, "endpoint:%x destin conn:%s\n",
+ ENDPOINT_NUMBER(endp), mgcp_conn_dump(conn_dst->conn));
+
+ /* Before we try to deliver the packet, we check if the destination
+ * port and IP-Address make sense at all. If not, we will be unable
+ * to deliver the packet. */
+ if (check_rtp_destin(conn_dst) != 0)
+ return -1;
+
+ /* Depending on the RTP connection type, deliver the RTP packet to the
+ * destination connection. */
+ switch (conn_dst->type) {
+ case MGCP_RTP_DEFAULT:
+ LOGP(DRTP, LOGL_DEBUG,
+ "endpoint:%x endpoint type is MGCP_RTP_DEFAULT, "
+ "using mgcp_send() to forward data directly\n",
+ ENDPOINT_NUMBER(endp));
+ return mgcp_send(endp, proto == MGCP_PROTO_RTP,
+ addr, buf, buf_size, conn_src, conn_dst);
+ case MGCP_OSMUX_BSC_NAT:
+ case MGCP_OSMUX_BSC:
+ LOGP(DRTP, LOGL_DEBUG,
+ "endpoint:%x endpoint type is MGCP_OSMUX_BSC_NAT, "
+ "using osmux_xfrm_to_osmux() to forward data through OSMUX\n",
+ ENDPOINT_NUMBER(endp));
+ return osmux_xfrm_to_osmux(buf, buf_size, conn_dst);
+ }
+
+ /* If the data has not been handled/forwarded until here, it will
+ * be discarded, this should not happen, normally the MGCP type
+ * should be properly set */
+ LOGP(DRTP, LOGL_ERROR,
+ "endpoint:%x bad MGCP type -- data discarded!\n",
+ ENDPOINT_NUMBER(endp));
+
+ return -1;
+}
+
+/*! dispatch incoming RTP packet to opposite RTP connection.
+ * \param[in] proto protocol (MGCP_CONN_TYPE_RTP or MGCP_CONN_TYPE_RTCP)
+ * \param[in] addr socket address where the RTP packet has been received from
+ * \param[in] buf buffer that hold the RTP payload
+ * \param[in] buf_size size data length of buf
+ * \param[in] conn originating connection
+ * \returns 0 on success, -1 on ERROR */
+int mgcp_dispatch_rtp_bridge_cb(int proto, struct sockaddr_in *addr, char *buf,
+ unsigned int buf_size, struct mgcp_conn *conn)
+{
+ struct mgcp_conn *conn_dst;
+ struct mgcp_endpoint *endp;
+ endp = conn->endp;
+
+ /*! NOTE: This callback function implements the endpoint specific
+ * dispatch bahviour of an rtp bridge/proxy endpoint. It is assumed
+ * that the endpoint will hold only two connections. This premise
+ * is used to determine the opposite connection (it is always the
+ * connection that is not the originating connection). Once the
+ * destination connection is known the RTP packet is sent via
+ * the destination connection. */
+
+ /* Find a destination connection. */
+ /* NOTE: This code path runs every time an RTP packet is received. The
+ * function mgcp_find_dst_conn() we use to determine the detination
+ * connection will iterate the connection list inside the endpoint.
+ * Since list iterations are quite costly, we will figure out the
+ * destination only once and use the optional private data pointer of
+ * the connection to cache the destination connection pointer. */
+ if (!conn->priv) {
+ conn_dst = mgcp_find_dst_conn(conn);
+ conn->priv = conn_dst;
+ } else {
+ conn_dst = (struct mgcp_conn *)conn->priv;
+ }
+
+ /* There is no destination conn, stop here */
+ if (!conn_dst) {
+ LOGP(DRTP, LOGL_ERROR,
+ "endpoint:%x unable to find destination conn\n",
+ ENDPOINT_NUMBER(endp));
+ return -1;
+ }
+
+ /* The destination conn is not an RTP connection */
+ if (conn_dst->type != MGCP_CONN_TYPE_RTP) {
+ LOGP(DRTP, LOGL_ERROR,
+ "endpoint:%x unable to find suitable destination conn\n",
+ ENDPOINT_NUMBER(endp));
+ return -1;
+ }
+
+ /* Dispatch RTP packet to destination RTP connection */
+ return mgcp_send_rtp(proto, addr, buf,
+ buf_size, &conn->u.rtp, &conn_dst->u.rtp);
+
+}
+
+/* Handle incoming RTP data from NET */
+static int rtp_data_net(struct osmo_fd *fd, unsigned int what)
+{
+ /* NOTE: This is a generic implementation. RTP data is received. In
+ * case of loopback the data is just sent back to its origin. All
+ * other cases implement endpoint specific behaviour (e.g. how is the
+ * destination connection determined?). That specific behaviour is
+ * implemented by the callback function that is called at the end of
+ * the function */
+
+ struct mgcp_conn_rtp *conn_src;
+ struct mgcp_endpoint *endp;
+ struct sockaddr_in addr;
+
+ char buf[RTP_BUF_SIZE];
+ int proto;
+ int len;
+
+ conn_src = (struct mgcp_conn_rtp *)fd->data;
+ OSMO_ASSERT(conn_src);
+ endp = conn_src->conn->endp;
+ OSMO_ASSERT(endp);
+
+ LOGP(DRTP, LOGL_DEBUG, "endpoint:%x source conn:%s\n",
+ ENDPOINT_NUMBER(endp), mgcp_conn_dump(conn_src->conn));
+
+ /* Receive packet */
+ len = mgcp_recv(&proto, &addr, buf, sizeof(buf), fd);
+ if (len < 0)
+ return -1;
+
+ /* Check if the connection is in loopback mode, if yes, just send the
+ * incoming data back to the origin */
+ if (conn_src->conn->mode == MGCP_CONN_LOOPBACK) {
+ return mgcp_send_rtp(proto, &addr, buf,
+ len, conn_src, conn_src);
+ }
+
+ /* Execute endpoint specific implementation that handles the
+ * dispatching of the RTP data */
+ return endp->type->dispatch_rtp_cb(proto, &addr, buf, len,
+ conn_src->conn);
+}
+
+/*! set IP Type of Service parameter.
+ * \param[in] fd associated file descriptor
+ * \param[in] tos dscp value
+ * \returns 0 on success, -1 on ERROR */
+int mgcp_set_ip_tos(int fd, int tos)
+{
+ int ret;
+ ret = setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
+
+ if (ret < 0)
+ return -1;
+ return 0;
+}
+
+/*! bind RTP port to osmo_fd.
+ * \param[in] source_addr source (local) address to bind on
+ * \param[in] fd associated file descriptor
+ * \param[in] port to bind on
+ * \returns 0 on success, -1 on ERROR */
+int mgcp_create_bind(const char *source_addr, struct osmo_fd *fd, int port)
+{
+ struct sockaddr_in addr;
+ int on = 1;
+
+ fd->fd = socket(AF_INET, SOCK_DGRAM, 0);
+ if (fd->fd < 0) {
+ LOGP(DRTP, LOGL_ERROR, "failed to create UDP port (%s:%i).\n",
+ source_addr, port);
+ return -1;
+ } else {
+ LOGP(DRTP, LOGL_DEBUG,
+ "created UDP port (%s:%i).\n", source_addr, port);
+ }
+
+ if (setsockopt(fd->fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) != 0) {
+ LOGP(DRTP, LOGL_ERROR,
+ "failed to set socket options (%s:%i).\n", source_addr,
+ port);
+ return -1;
+ }
+
+ memset(&addr, 0, sizeof(addr));
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons(port);
+ inet_aton(source_addr, &addr.sin_addr);
+
+ if (bind(fd->fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
+ close(fd->fd);
+ fd->fd = -1;
+ LOGP(DRTP, LOGL_ERROR, "failed to bind UDP port (%s:%i).\n",
+ source_addr, port);
+ return -1;
+ } else {
+ LOGP(DRTP, LOGL_DEBUG,
+ "bound UDP port (%s:%i).\n", source_addr, port);
+ }
+
+ return 0;
+}
+
+/* Bind RTP and RTCP port (helper function for mgcp_bind_net_rtp_port()) */
+static int bind_rtp(struct mgcp_config *cfg, const char *source_addr,
+ struct mgcp_rtp_end *rtp_end, int endpno)
+{
+ /* NOTE: The port that is used for RTCP is the RTP port incremented by one
+ * (e.g. RTP-Port = 16000 ==> RTCP-Port = 16001) */
+
+ if (mgcp_create_bind(source_addr, &rtp_end->rtp,
+ rtp_end->local_port) != 0) {
+ LOGP(DRTP, LOGL_ERROR,
+ "endpoint:%x failed to create RTP port: %s:%d\n", endpno,
+ source_addr, rtp_end->local_port);
+ goto cleanup0;
+ }
+
+ if (mgcp_create_bind(source_addr, &rtp_end->rtcp,
+ rtp_end->local_port + 1) != 0) {
+ LOGP(DRTP, LOGL_ERROR,
+ "endpoint:%x failed to create RTCP port: %s:%d\n", endpno,
+ source_addr, rtp_end->local_port + 1);
+ goto cleanup1;
+ }
+
+ /* Set Type of Service (DSCP-Value) as configured via VTY */
+ mgcp_set_ip_tos(rtp_end->rtp.fd, cfg->endp_dscp);
+ mgcp_set_ip_tos(rtp_end->rtcp.fd, cfg->endp_dscp);
+
+ rtp_end->rtp.when = BSC_FD_READ;
+ if (osmo_fd_register(&rtp_end->rtp) != 0) {
+ LOGP(DRTP, LOGL_ERROR,
+ "endpoint:%x failed to register RTP port %d\n", endpno,
+ rtp_end->local_port);
+ goto cleanup2;
+ }
+
+ rtp_end->rtcp.when = BSC_FD_READ;
+ if (osmo_fd_register(&rtp_end->rtcp) != 0) {
+ LOGP(DRTP, LOGL_ERROR,
+ "endpoint:%x failed to register RTCP port %d\n", endpno,
+ rtp_end->local_port + 1);
+ goto cleanup3;
+ }
+
+ return 0;
+
+cleanup3:
+ osmo_fd_unregister(&rtp_end->rtp);
+cleanup2:
+ close(rtp_end->rtcp.fd);
+ rtp_end->rtcp.fd = -1;
+cleanup1:
+ close(rtp_end->rtp.fd);
+ rtp_end->rtp.fd = -1;
+cleanup0:
+ return -1;
+}
+
+/*! bind RTP port to endpoint/connection.
+ * \param[in] endp endpoint that holds the RTP connection
+ * \param[in] rtp_port port number to bind on
+ * \param[in] conn associated RTP connection
+ * \returns 0 on success, -1 on ERROR */
+int mgcp_bind_net_rtp_port(struct mgcp_endpoint *endp, int rtp_port,
+ struct mgcp_conn_rtp *conn)
+{
+ char name[512];
+ struct mgcp_rtp_end *end;
+ char local_ip_addr[INET_ADDRSTRLEN];
+
+ snprintf(name, sizeof(name), "%s-%u", conn->conn->name, conn->conn->id);
+ end = &conn->end;
+
+ if (end->rtp.fd != -1 || end->rtcp.fd != -1) {
+ LOGP(DRTP, LOGL_ERROR,
+ "endpoint:%x %u was already bound on conn:%s\n",
+ ENDPOINT_NUMBER(endp), rtp_port,
+ mgcp_conn_dump(conn->conn));
+
+ /* Double bindings should never occour! Since we always allocate
+ * connections dynamically and free them when they are not
+ * needed anymore, there must be no previous binding leftover.
+ * Should there be a connection bound twice, we have a serious
+ * problem and must exit immediately! */
+ OSMO_ASSERT(false);
+ }
+
+ end->local_port = rtp_port;
+ end->rtp.cb = rtp_data_net;
+ end->rtp.data = conn;
+ end->rtcp.data = conn;
+ end->rtcp.cb = rtp_data_net;
+
+ mgcp_get_local_addr(local_ip_addr, conn);
+
+ return bind_rtp(endp->cfg, local_ip_addr, end,
+ ENDPOINT_NUMBER(endp));
+}
+
+/*! free allocated RTP and RTCP ports.
+ * \param[in] end RTP end */
+void mgcp_free_rtp_port(struct mgcp_rtp_end *end)
+{
+ if (end->rtp.fd != -1) {
+ close(end->rtp.fd);
+ end->rtp.fd = -1;
+ osmo_fd_unregister(&end->rtp);
+ }
+
+ if (end->rtcp.fd != -1) {
+ close(end->rtcp.fd);
+ end->rtcp.fd = -1;
+ osmo_fd_unregister(&end->rtcp);
+ }
+}
diff --git a/src/libosmo-mgcp/mgcp_osmux.c b/src/libosmo-mgcp/mgcp_osmux.c
new file mode 100644
index 0000000..60ffe06
--- /dev/null
+++ b/src/libosmo-mgcp/mgcp_osmux.c
@@ -0,0 +1,692 @@
+/*
+ * (C) 2012-2013 by Pablo Neira Ayuso <pablo@gnumonks.org>
+ * (C) 2012-2013 by On Waves ehf <http://www.on-waves.com>
+ * All rights not specifically granted under this license are reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Affero General Public License as published by the
+ * Free Software Foundation; either version 3 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <stdio.h> /* for printf */
+#include <string.h> /* for memcpy */
+#include <stdlib.h> /* for abs */
+#include <inttypes.h> /* for PRIu64 */
+#include <netinet/in.h>
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/talloc.h>
+
+#include <osmocom/netif/osmux.h>
+#include <osmocom/netif/rtp.h>
+
+#include <osmocom/mgcp/mgcp.h>
+#include <osmocom/mgcp/mgcp_internal.h>
+#include <osmocom/mgcp/osmux.h>
+#include <osmocom/mgcp/mgcp_conn.h>
+
+static struct osmo_fd osmux_fd;
+
+static LLIST_HEAD(osmux_handle_list);
+
+struct osmux_handle {
+ struct llist_head head;
+ struct osmux_in_handle *in;
+ struct in_addr rem_addr;
+ int rem_port;
+ int refcnt;
+};
+
+static void *osmux;
+
+/* Deliver OSMUX batch to the remote end */
+static void osmux_deliver_cb(struct msgb *batch_msg, void *data)
+{
+ struct osmux_handle *handle = data;
+ struct sockaddr_in out = {
+ .sin_family = AF_INET,
+ .sin_port = handle->rem_port,
+ };
+
+ memcpy(&out.sin_addr, &handle->rem_addr, sizeof(handle->rem_addr));
+ sendto(osmux_fd.fd, batch_msg->data, batch_msg->len, 0,
+ (struct sockaddr *)&out, sizeof(out));
+ msgb_free(batch_msg);
+}
+
+/* Lookup existing OSMUX handle for specified destination address. */
+static struct osmux_handle *
+osmux_handle_find_get(struct in_addr *addr, int rem_port)
+{
+ struct osmux_handle *h;
+
+ llist_for_each_entry(h, &osmux_handle_list, head) {
+ if (memcmp(&h->rem_addr, addr, sizeof(struct in_addr)) == 0 &&
+ h->rem_port == rem_port) {
+ LOGP(DLMGCP, LOGL_DEBUG, "using existing OSMUX handle "
+ "for addr=%s:%d\n",
+ inet_ntoa(*addr), ntohs(rem_port));
+ h->refcnt++;
+ return h;
+ }
+ }
+
+ return NULL;
+}
+
+/* Put down no longer needed OSMUX handle */
+static void osmux_handle_put(struct osmux_in_handle *in)
+{
+ struct osmux_handle *h;
+
+ llist_for_each_entry(h, &osmux_handle_list, head) {
+ if (h->in == in) {
+ if (--h->refcnt == 0) {
+ LOGP(DLMGCP, LOGL_INFO,
+ "Releasing unused osmux handle for %s:%d\n",
+ inet_ntoa(h->rem_addr),
+ ntohs(h->rem_port));
+ LOGP(DLMGCP, LOGL_INFO, "Stats: "
+ "input RTP msgs: %u bytes: %"PRIu64" "
+ "output osmux msgs: %u bytes: %"PRIu64"\n",
+ in->stats.input_rtp_msgs,
+ in->stats.input_rtp_bytes,
+ in->stats.output_osmux_msgs,
+ in->stats.output_osmux_bytes);
+ llist_del(&h->head);
+ osmux_xfrm_input_fini(h->in);
+ talloc_free(h);
+ }
+ return;
+ }
+ }
+ LOGP(DLMGCP, LOGL_ERROR, "cannot find Osmux input handle %p\n", in);
+}
+
+/* Allocate free OSMUX handle */
+static struct osmux_handle *
+osmux_handle_alloc(struct mgcp_config *cfg, struct in_addr *addr, int rem_port)
+{
+ struct osmux_handle *h;
+
+ h = talloc_zero(osmux, struct osmux_handle);
+ if (!h)
+ return NULL;
+ h->rem_addr = *addr;
+ h->rem_port = rem_port;
+ h->refcnt++;
+
+ h->in = talloc_zero(h, struct osmux_in_handle);
+ if (!h->in) {
+ talloc_free(h);
+ return NULL;
+ }
+
+ /* sequence number to start OSMUX message from */
+ h->in->osmux_seq = 0;
+
+ h->in->batch_factor = cfg->osmux_batch;
+
+ /* If batch size is zero, the library defaults to 1470 bytes. */
+ h->in->batch_size = cfg->osmux_batch_size;
+ h->in->deliver = osmux_deliver_cb;
+ osmux_xfrm_input_init(h->in);
+ h->in->data = h;
+
+ llist_add(&h->head, &osmux_handle_list);
+
+ LOGP(DLMGCP, LOGL_DEBUG, "created new OSMUX handle for addr=%s:%d\n",
+ inet_ntoa(*addr), ntohs(rem_port));
+
+ return h;
+}
+
+/* Lookup existing handle for a specified address, if the handle can not be
+ * foud a the function will automatically allocate one */
+static struct osmux_in_handle *
+osmux_handle_lookup(struct mgcp_config *cfg, struct in_addr *addr, int rem_port)
+{
+ struct osmux_handle *h;
+
+ h = osmux_handle_find_get(addr, rem_port);
+ if (h != NULL)
+ return h->in;
+
+ h = osmux_handle_alloc(cfg, addr, rem_port);
+ if (h == NULL)
+ return NULL;
+
+ return h->in;
+}
+
+/*! send RTP packet through OSMUX connection.
+ * \param[in] buf rtp data
+ * \param[in] buf_len length of rtp data
+ * \param[in] conn associated RTP connection
+ * \returns 0 on success, -1 on ERROR */
+int osmux_xfrm_to_osmux(char *buf, int buf_len, struct mgcp_conn_rtp *conn)
+{
+ int ret;
+ struct msgb *msg;
+
+ msg = msgb_alloc(4096, "RTP");
+ if (!msg)
+ return -1;
+
+ memcpy(msg->data, buf, buf_len);
+ msgb_put(msg, buf_len);
+
+ while ((ret = osmux_xfrm_input(conn->osmux.in, msg, conn->osmux.cid)) > 0) {
+ /* batch full, build and deliver it */
+ osmux_xfrm_input_deliver(conn->osmux.in);
+ }
+ return 0;
+}
+
+/* Lookup the endpoint that corresponds to the specified address (port) */
+static struct mgcp_endpoint *
+endpoint_lookup(struct mgcp_config *cfg, int cid,
+ struct in_addr *from_addr, int type)
+{
+ struct mgcp_endpoint *endp = NULL;
+ int i;
+ struct mgcp_conn_rtp *conn_net = NULL;
+ struct mgcp_conn_rtp *conn_bts = NULL;
+
+ for (i=0; i<cfg->trunk.number_endpoints; i++) {
+ struct in_addr *this;
+
+ endp = &cfg->trunk.endpoints[i];
+
+#if 0
+ if (!tmp->allocated)
+ continue;
+#endif
+
+ switch(type) {
+ case MGCP_DEST_NET:
+ /* FIXME: Get rid of CONN_ID_XXX! */
+ conn_net = mgcp_conn_get_rtp(endp, CONN_ID_NET);
+ this = &conn_net->end.addr;
+ break;
+ case MGCP_DEST_BTS:
+ /* FIXME: Get rid of CONN_ID_XXX! */
+ conn_bts = mgcp_conn_get_rtp(endp, CONN_ID_BTS);
+ this = &conn_bts->end.addr;
+ break;
+ default:
+ /* Should not ever happen */
+ LOGP(DLMGCP, LOGL_ERROR, "Bad type %d. Fix your code.\n", type);
+ return NULL;
+ }
+
+ /* FIXME: Get rid of CONN_ID_XXX! */
+ conn_net = mgcp_conn_get_rtp(endp, CONN_ID_NET);
+ if (conn_net->osmux.cid == cid && this->s_addr == from_addr->s_addr)
+ return endp;
+ }
+
+ LOGP(DLMGCP, LOGL_ERROR, "Cannot find endpoint with cid=%d\n", cid);
+
+ return NULL;
+}
+
+static void scheduled_tx_net_cb(struct msgb *msg, void *data)
+{
+ struct mgcp_endpoint *endp = data;
+ struct mgcp_conn_rtp *conn_net = NULL;
+ struct mgcp_conn_rtp *conn_bts = NULL;
+
+ /* FIXME: Get rid of CONN_ID_XXX! */
+ conn_bts = mgcp_conn_get_rtp(endp, CONN_ID_BTS);
+ conn_net = mgcp_conn_get_rtp(endp, CONN_ID_NET);
+ if (!conn_bts || !conn_net)
+ return;
+
+ struct sockaddr_in addr = {
+ .sin_addr = conn_net->end.addr,
+ .sin_port = conn_net->end.rtp_port,
+ };
+
+ conn_bts->end.octets_tx += msg->len;
+ conn_bts->end.packets_tx++;
+
+ /* Send RTP data to NET */
+ /* FIXME: Get rid of conn_bts and conn_net! */
+ mgcp_send(endp, 1, &addr, (char *)msg->data, msg->len,
+ conn_bts, conn_net);
+ msgb_free(msg);
+}
+
+static void scheduled_tx_bts_cb(struct msgb *msg, void *data)
+{
+ struct mgcp_endpoint *endp = data;
+ struct mgcp_conn_rtp *conn_net = NULL;
+ struct mgcp_conn_rtp *conn_bts = NULL;
+
+ /* FIXME: Get rid of CONN_ID_XXX! */
+ conn_bts = mgcp_conn_get_rtp(endp, CONN_ID_BTS);
+ conn_net = mgcp_conn_get_rtp(endp, CONN_ID_NET);
+ if (!conn_bts || !conn_net)
+ return;
+
+ struct sockaddr_in addr = {
+ .sin_addr = conn_bts->end.addr,
+ .sin_port = conn_bts->end.rtp_port,
+ };
+
+ conn_net->end.octets_tx += msg->len;
+ conn_net->end.packets_tx++;
+
+ /* Send RTP data to BTS */
+ /* FIXME: Get rid of conn_bts and conn_net! */
+ mgcp_send(endp, 1, &addr, (char *)msg->data, msg->len,
+ conn_net, conn_bts);
+ msgb_free(msg);
+}
+
+static struct msgb *osmux_recv(struct osmo_fd *ofd, struct sockaddr_in *addr)
+{
+ struct msgb *msg;
+ socklen_t slen = sizeof(*addr);
+ int ret;
+
+ msg = msgb_alloc(4096, "OSMUX");
+ if (!msg) {
+ LOGP(DLMGCP, LOGL_ERROR, "cannot allocate message\n");
+ return NULL;
+ }
+ ret = recvfrom(ofd->fd, msg->data, msg->data_len, 0,
+ (struct sockaddr *)addr, &slen);
+ if (ret <= 0) {
+ msgb_free(msg);
+ LOGP(DLMGCP, LOGL_ERROR, "cannot receive message\n");
+ return NULL;
+ }
+ msgb_put(msg, ret);
+
+ return msg;
+}
+
+#define osmux_chunk_length(msg, rem) (rem - msg->len);
+
+int osmux_read_from_bsc_nat_cb(struct osmo_fd *ofd, unsigned int what)
+{
+ struct msgb *msg;
+ struct osmux_hdr *osmuxh;
+ struct llist_head list;
+ struct sockaddr_in addr;
+ struct mgcp_config *cfg = ofd->data;
+ uint32_t rem;
+ struct mgcp_conn_rtp *conn_net = NULL;
+
+ msg = osmux_recv(ofd, &addr);
+ if (!msg)
+ return -1;
+
+ /* not any further processing dummy messages */
+ if (msg->data[0] == MGCP_DUMMY_LOAD)
+ goto out;
+
+ rem = msg->len;
+ while((osmuxh = osmux_xfrm_output_pull(msg)) != NULL) {
+ struct mgcp_endpoint *endp;
+
+ /* Yes, we use MGCP_DEST_NET to locate the origin */
+ endp = endpoint_lookup(cfg, osmuxh->circuit_id,
+ &addr.sin_addr, MGCP_DEST_NET);
+
+ /* FIXME: Get rid of CONN_ID_XXX! */
+ conn_net = mgcp_conn_get_rtp(endp, CONN_ID_NET);
+ if (!conn_net)
+ goto out;
+
+ if (!endp) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Cannot find an endpoint for circuit_id=%d\n",
+ osmuxh->circuit_id);
+ goto out;
+ }
+ conn_net->osmux.stats.octets += osmux_chunk_length(msg, rem);
+ conn_net->osmux.stats.chunks++;
+ rem = msg->len;
+
+ osmux_xfrm_output(osmuxh, &conn_net->osmux.out, &list);
+ osmux_tx_sched(&list, scheduled_tx_bts_cb, endp);
+ }
+out:
+ msgb_free(msg);
+ return 0;
+}
+
+/* This is called from the bsc-nat */
+static int osmux_handle_dummy(struct mgcp_config *cfg, struct sockaddr_in *addr,
+ struct msgb *msg)
+{
+ struct mgcp_endpoint *endp;
+ uint8_t osmux_cid;
+ struct mgcp_conn_rtp *conn_net = NULL;
+
+ if (msg->len < 1 + sizeof(osmux_cid)) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Discarding truncated Osmux dummy load\n");
+ goto out;
+ }
+
+ LOGP(DLMGCP, LOGL_DEBUG, "Received Osmux dummy load from %s\n",
+ inet_ntoa(addr->sin_addr));
+
+ if (!cfg->osmux) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "bsc wants to use Osmux but bsc-nat did not request it\n");
+ goto out;
+ }
+
+ /* extract the osmux CID from the dummy message */
+ memcpy(&osmux_cid, &msg->data[1], sizeof(osmux_cid));
+
+ endp = endpoint_lookup(cfg, osmux_cid, &addr->sin_addr, MGCP_DEST_BTS);
+ if (!endp) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Cannot find endpoint for Osmux CID %d\n", osmux_cid);
+ goto out;
+ }
+
+ conn_net = mgcp_conn_get_rtp(endp, CONN_ID_NET);
+ if (!conn_net)
+ goto out;
+
+ if (conn_net->osmux.state == OSMUX_STATE_ENABLED)
+ goto out;
+
+ if (osmux_enable_conn(endp, conn_net, &addr->sin_addr, addr->sin_port) < 0 ) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Could not enable osmux in endpoint %d\n",
+ ENDPOINT_NUMBER(endp));
+ goto out;
+ }
+
+ LOGP(DLMGCP, LOGL_INFO, "Enabling osmux in endpoint %d for %s:%u\n",
+ ENDPOINT_NUMBER(endp), inet_ntoa(addr->sin_addr),
+ ntohs(addr->sin_port));
+out:
+ msgb_free(msg);
+ return 0;
+}
+
+int osmux_read_from_bsc_cb(struct osmo_fd *ofd, unsigned int what)
+{
+ struct msgb *msg;
+ struct osmux_hdr *osmuxh;
+ struct llist_head list;
+ struct sockaddr_in addr;
+ struct mgcp_config *cfg = ofd->data;
+ uint32_t rem;
+ struct mgcp_conn_rtp *conn_net = NULL;
+
+ msg = osmux_recv(ofd, &addr);
+ if (!msg)
+ return -1;
+
+ /* not any further processing dummy messages */
+ if (msg->data[0] == MGCP_DUMMY_LOAD)
+ return osmux_handle_dummy(cfg, &addr, msg);
+
+ rem = msg->len;
+ while((osmuxh = osmux_xfrm_output_pull(msg)) != NULL) {
+ struct mgcp_endpoint *endp;
+
+ /* Yes, we use MGCP_DEST_BTS to locate the origin */
+ endp = endpoint_lookup(cfg, osmuxh->circuit_id,
+ &addr.sin_addr, MGCP_DEST_BTS);
+
+ /* FIXME: Get rid of CONN_ID_XXX! */
+ conn_net = mgcp_conn_get_rtp(endp, CONN_ID_NET);
+ if (!conn_net)
+ goto out;
+
+ if (!endp) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Cannot find an endpoint for circuit_id=%d\n",
+ osmuxh->circuit_id);
+ goto out;
+ }
+ conn_net->osmux.stats.octets += osmux_chunk_length(msg, rem);
+ conn_net->osmux.stats.chunks++;
+ rem = msg->len;
+
+ osmux_xfrm_output(osmuxh, &conn_net->osmux.out, &list);
+ osmux_tx_sched(&list, scheduled_tx_net_cb, endp);
+ }
+out:
+ msgb_free(msg);
+ return 0;
+}
+
+int osmux_init(int role, struct mgcp_config *cfg)
+{
+ int ret;
+
+ switch(role) {
+ case OSMUX_ROLE_BSC:
+ osmux_fd.cb = osmux_read_from_bsc_nat_cb;
+ break;
+ case OSMUX_ROLE_BSC_NAT:
+ osmux_fd.cb = osmux_read_from_bsc_cb;
+ break;
+ default:
+ LOGP(DLMGCP, LOGL_ERROR, "wrong role for OSMUX\n");
+ return -1;
+ }
+ osmux_fd.data = cfg;
+
+ ret = mgcp_create_bind(cfg->osmux_addr, &osmux_fd, cfg->osmux_port);
+ if (ret < 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "cannot bind OSMUX socket\n");
+ return ret;
+ }
+ mgcp_set_ip_tos(osmux_fd.fd, cfg->endp_dscp);
+ osmux_fd.when |= BSC_FD_READ;
+
+ ret = osmo_fd_register(&osmux_fd);
+ if (ret < 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "cannot register OSMUX socket\n");
+ return ret;
+ }
+ cfg->osmux_init = 1;
+
+ return 0;
+}
+
+/*! enable OSXMUX circuit for a specified connection.
+ * \param[in] endp mgcp endpoint (configuration)
+ * \param[in] conn connection to disable
+ * \param[in] addr IP address of remote OSMUX endpoint
+ * \param[in] port portnumber of the remote OSMUX endpoint
+ * \returns 0 on success, -1 on ERROR */
+int osmux_enable_conn(struct mgcp_endpoint *endp, struct mgcp_conn_rtp *conn,
+ struct in_addr *addr, uint16_t port)
+{
+ /*! If osmux is enabled, initialize the output handler. This handler is
+ * used to reconstruct the RTP flow from osmux. The RTP SSRC is
+ * allocated based on the circuit ID (conn_net->osmux.cid), which is unique
+ * in the local scope to the BSC/BSC-NAT. We use it to divide the RTP
+ * SSRC space (2^32) by the 256 possible circuit IDs, then randomly
+ * select one value from that window. Thus, we have no chance to have
+ * overlapping RTP SSRC traveling to the BTSes behind the BSC,
+ * similarly, for flows traveling to the MSC.
+ */
+ static const uint32_t rtp_ssrc_winlen = UINT32_MAX / 256;
+ uint16_t osmux_dummy = endp->cfg->osmux_dummy;
+
+ /* Check if osmux is enabled for the specified connection */
+ if (conn->osmux.state == OSMUX_STATE_DISABLED) {
+ LOGP(DLMGCP, LOGL_ERROR, "OSMUX not enabled for conn:%s\n",
+ mgcp_conn_dump(conn->conn));
+ return -1;
+ }
+
+ osmux_xfrm_output_init(&conn->osmux.out,
+ (conn->osmux.cid * rtp_ssrc_winlen) +
+ (random() % rtp_ssrc_winlen));
+
+ conn->osmux.in = osmux_handle_lookup(endp->cfg, addr, port);
+ if (!conn->osmux.in) {
+ LOGP(DLMGCP, LOGL_ERROR, "Cannot allocate input osmux handle for conn:%s\n",
+ mgcp_conn_dump(conn->conn));
+ return -1;
+ }
+ if (!osmux_xfrm_input_open_circuit(conn->osmux.in, conn->osmux.cid, osmux_dummy)) {
+ LOGP(DLMGCP, LOGL_ERROR, "Cannot open osmux circuit %u for conn:%s\n",
+ conn->osmux.cid, mgcp_conn_dump(conn->conn));
+ return -1;
+ }
+
+ switch (endp->cfg->role) {
+ case MGCP_BSC_NAT:
+ conn->type = MGCP_OSMUX_BSC_NAT;
+ break;
+ case MGCP_BSC:
+ conn->type = MGCP_OSMUX_BSC;
+ break;
+ }
+
+ conn->osmux.state = OSMUX_STATE_ENABLED;
+
+ return 0;
+}
+
+/*! disable OSXMUX circuit for a specified connection.
+ * \param[in] conn connection to disable */
+void osmux_disable_conn(struct mgcp_conn_rtp *conn)
+{
+ if (!conn)
+ return;
+
+ if (conn->osmux.state != OSMUX_STATE_ENABLED)
+ return;
+
+ LOGP(DLMGCP, LOGL_INFO, "Releasing connection %u using Osmux CID %u\n",
+ conn->conn->id, conn->osmux.cid);
+ osmux_xfrm_input_close_circuit(conn->osmux.in, conn->osmux.cid);
+ conn->osmux.state = OSMUX_STATE_DISABLED;
+ conn->osmux.cid = -1;
+ osmux_handle_put(conn->osmux.in);
+}
+
+/*! relase OSXMUX cid, that had been allocated to this connection.
+ * \param[in] conn connection with OSMUX cid to release */
+void osmux_release_cid(struct mgcp_conn_rtp *conn)
+{
+ if (!conn)
+ return;
+
+ if (conn->osmux.state != OSMUX_STATE_ENABLED)
+ return;
+
+ if (conn->osmux.allocated_cid >= 0)
+ osmux_put_cid(conn->osmux.allocated_cid);
+ conn->osmux.allocated_cid = -1;
+}
+
+/*! allocate OSXMUX cid to connection.
+ * \param[in] conn connection for which we allocate the OSMUX cid*/
+void osmux_allocate_cid(struct mgcp_conn_rtp *conn)
+{
+ osmux_release_cid(conn);
+ conn->osmux.allocated_cid = osmux_get_cid();
+}
+
+/*! send RTP dummy packet to OSMUX connection port.
+ * \param[in] endp mcgp endpoint that holds the RTP connection
+ * \param[in] conn associated RTP connection
+ * \returns bytes sent, -1 on error */
+int osmux_send_dummy(struct mgcp_endpoint *endp, struct mgcp_conn_rtp *conn)
+{
+ char buf[1 + sizeof(uint8_t)];
+ struct in_addr addr_unset = {};
+
+ /*! The dummy packet will not be sent via the actual OSMUX connection,
+ * instead it is sent out of band to port where the remote OSMUX
+ * multplexer is listening. The goal is to ensure that the connection
+ * is kept open */
+
+ /*! We don't need to send the dummy load for osmux so often as another
+ * endpoint may have already punched the hole in the firewall. This
+ * approach is simple though. */
+
+ buf[0] = MGCP_DUMMY_LOAD;
+ memcpy(&buf[1], &conn->osmux.cid, sizeof(conn->osmux.cid));
+
+ /* Wait until we have the connection information from MDCX */
+ if (memcmp(&conn->end.addr, &addr_unset, sizeof(addr_unset)) == 0)
+ return 0;
+
+ if (conn->osmux.state == OSMUX_STATE_ACTIVATING) {
+ if (osmux_enable_conn(endp, conn, &conn->end.addr,
+ htons(endp->cfg->osmux_port)) < 0) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Could not activate osmux for conn:%s\n",
+ mgcp_conn_dump(conn->conn));
+ }
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Osmux CID %u for %s:%u is now enabled\n",
+ conn->osmux.cid, inet_ntoa(conn->end.addr),
+ endp->cfg->osmux_port);
+ }
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "sending OSMUX dummy load to %s CID %u\n",
+ inet_ntoa(conn->end.addr), conn->osmux.cid);
+
+ return mgcp_udp_send(osmux_fd.fd, &conn->end.addr,
+ htons(endp->cfg->osmux_port), buf, sizeof(buf));
+}
+
+/*! bsc-nat allocates/releases the OSMUX cids (Circuit IDs). */
+static uint8_t osmux_cid_bitmap[(OSMUX_CID_MAX + 1) / 8];
+
+/*! count the number of taken OSMUX cids.
+ * \returns number of OSMUX cids in use */
+int osmux_used_cid(void)
+{
+ int i, j, used = 0;
+
+ for (i = 0; i < sizeof(osmux_cid_bitmap); i++) {
+ for (j = 0; j < 8; j++) {
+ if (osmux_cid_bitmap[i] & (1 << j))
+ used += 1;
+ }
+ }
+
+ return used;
+}
+
+/*! take a free OSMUX cid.
+ * \returns OSMUX cid */
+int osmux_get_cid(void)
+{
+ int i, j;
+
+ for (i = 0; i < sizeof(osmux_cid_bitmap); i++) {
+ for (j = 0; j < 8; j++) {
+ if (osmux_cid_bitmap[i] & (1 << j))
+ continue;
+
+ osmux_cid_bitmap[i] |= (1 << j);
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "Allocating Osmux CID %u from pool\n", (i * 8) + j);
+ return (i * 8) + j;
+ }
+ }
+
+ LOGP(DLMGCP, LOGL_ERROR, "All Osmux circuits are in use!\n");
+ return -1;
+}
+
+/*! put back a no longer used OSMUX cid.
+ * \param[in] osmux_cid OSMUX cid */
+void osmux_put_cid(uint8_t osmux_cid)
+{
+ LOGP(DLMGCP, LOGL_DEBUG, "Osmux CID %u is back to the pool\n", osmux_cid);
+ osmux_cid_bitmap[osmux_cid / 8] &= ~(1 << (osmux_cid % 8));
+}
diff --git a/src/libosmo-mgcp/mgcp_protocol.c b/src/libosmo-mgcp/mgcp_protocol.c
new file mode 100644
index 0000000..8c6bd6e
--- /dev/null
+++ b/src/libosmo-mgcp/mgcp_protocol.c
@@ -0,0 +1,1293 @@
+/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
+/* The protocol implementation */
+
+/*
+ * (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2012 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <limits.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/talloc.h>
+#include <osmocom/core/select.h>
+
+#include <osmocom/mgcp/mgcp.h>
+#include <osmocom/mgcp/mgcp_common.h>
+#include <osmocom/mgcp/mgcp_internal.h>
+#include <osmocom/mgcp/mgcp_stat.h>
+#include <osmocom/mgcp/mgcp_msg.h>
+#include <osmocom/mgcp/mgcp_ep.h>
+#include <osmocom/mgcp/mgcp_sdp.h>
+
+struct mgcp_request {
+ char *name;
+ struct msgb *(*handle_request) (struct mgcp_parse_data * data);
+ char *debug_name;
+};
+
+#define MGCP_REQUEST(NAME, REQ, DEBUG_NAME) \
+ { .name = NAME, .handle_request = REQ, .debug_name = DEBUG_NAME },
+
+static struct msgb *handle_audit_endpoint(struct mgcp_parse_data *data);
+static struct msgb *handle_create_con(struct mgcp_parse_data *data);
+static struct msgb *handle_delete_con(struct mgcp_parse_data *data);
+static struct msgb *handle_modify_con(struct mgcp_parse_data *data);
+static struct msgb *handle_rsip(struct mgcp_parse_data *data);
+static struct msgb *handle_noti_req(struct mgcp_parse_data *data);
+
+/* Initalize transcoder */
+static int setup_rtp_processing(struct mgcp_endpoint *endp,
+ struct mgcp_conn_rtp *conn)
+{
+ struct mgcp_config *cfg = endp->cfg;
+ struct mgcp_conn_rtp *conn_src = NULL;
+ struct mgcp_conn_rtp *conn_dst = conn;
+ struct mgcp_conn *_conn;
+
+ if (conn->type != MGCP_RTP_DEFAULT) {
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "endpoint:%x RTP-setup: Endpoint is not configured as RTP default, stopping here!\n",
+ ENDPOINT_NUMBER(endp));
+ return 0;
+ }
+
+ if (conn->conn->mode == MGCP_CONN_LOOPBACK) {
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "endpoint:%x RTP-setup: Endpoint is in loopback mode, stopping here!\n",
+ ENDPOINT_NUMBER(endp));
+ return 0;
+ }
+
+ /* Find the "sister" connection */
+ llist_for_each_entry(_conn, &endp->conns, entry) {
+ if (_conn->id != conn->conn->id) {
+ conn_src = &_conn->u.rtp;
+ break;
+ }
+ }
+
+ return cfg->setup_rtp_processing_cb(endp, &conn_dst->end,
+ &conn_src->end);
+}
+
+/* array of function pointers for handling various
+ * messages. In the future this might be binary sorted
+ * for performance reasons. */
+static const struct mgcp_request mgcp_requests[] = {
+ MGCP_REQUEST("AUEP", handle_audit_endpoint, "AuditEndpoint")
+ MGCP_REQUEST("CRCX", handle_create_con, "CreateConnection")
+ MGCP_REQUEST("DLCX", handle_delete_con, "DeleteConnection")
+ MGCP_REQUEST("MDCX", handle_modify_con, "ModifiyConnection")
+ MGCP_REQUEST("RQNT", handle_noti_req, "NotificationRequest")
+
+ /* SPEC extension */
+ MGCP_REQUEST("RSIP", handle_rsip, "ReSetInProgress")
+};
+
+/* Helper function to allocate some memory for responses and retransmissions */
+static struct msgb *mgcp_msgb_alloc(void)
+{
+ struct msgb *msg;
+ msg = msgb_alloc_headroom(4096, 128, "MGCP msg");
+ if (!msg)
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to msgb for MGCP data.\n");
+
+ return msg;
+}
+
+/* Helper function for do_retransmission() and create_resp() */
+static struct msgb *do_retransmission(const struct mgcp_endpoint *endp)
+{
+ struct msgb *msg = mgcp_msgb_alloc();
+ if (!msg)
+ return NULL;
+
+ msg->l2h = msgb_put(msg, strlen(endp->last_response));
+ memcpy(msg->l2h, endp->last_response, msgb_l2len(msg));
+ mgcp_disp_msg(msg->l2h, msgb_l2len(msg), "Retransmitted response");
+ return msg;
+}
+
+static struct msgb *create_resp(struct mgcp_endpoint *endp, int code,
+ const char *txt, const char *msg,
+ const char *trans, const char *param,
+ const char *sdp)
+{
+ int len;
+ struct msgb *res;
+
+ res = mgcp_msgb_alloc();
+ if (!res)
+ return NULL;
+
+ len = snprintf((char *)res->data, 2048, "%d %s%s%s\r\n%s",
+ code, trans, txt, param ? param : "", sdp ? sdp : "");
+ if (len < 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to sprintf MGCP response.\n");
+ msgb_free(res);
+ return NULL;
+ }
+
+ res->l2h = msgb_put(res, len);
+ LOGP(DLMGCP, LOGL_DEBUG, "Generated response: code=%d\n", code);
+ mgcp_disp_msg(res->l2h, msgb_l2len(res), "Generated response");
+
+ /*
+ * Remember the last transmission per endpoint.
+ */
+ if (endp) {
+ struct mgcp_trunk_config *tcfg = endp->tcfg;
+ talloc_free(endp->last_response);
+ talloc_free(endp->last_trans);
+ endp->last_trans = talloc_strdup(tcfg->endpoints, trans);
+ endp->last_response = talloc_strndup(tcfg->endpoints,
+ (const char *)res->l2h,
+ msgb_l2len(res));
+ }
+
+ return res;
+}
+
+static struct msgb *create_ok_resp_with_param(struct mgcp_endpoint *endp,
+ int code, const char *msg,
+ const char *trans,
+ const char *param)
+{
+ return create_resp(endp, code, " OK", msg, trans, param, NULL);
+}
+
+static struct msgb *create_ok_response(struct mgcp_endpoint *endp,
+ int code, const char *msg,
+ const char *trans)
+{
+ return create_ok_resp_with_param(endp, code, msg, trans, NULL);
+}
+
+static struct msgb *create_err_response(struct mgcp_endpoint *endp,
+ int code, const char *msg,
+ const char *trans)
+{
+ return create_resp(endp, code, " FAIL", msg, trans, NULL, NULL);
+}
+
+/* Format MGCP response string (with SDP attached) */
+static struct msgb *create_response_with_sdp(struct mgcp_endpoint *endp,
+ struct mgcp_conn_rtp *conn,
+ const char *msg,
+ const char *trans_id)
+{
+ const char *addr = endp->cfg->local_ip;
+ struct msgb *sdp;
+ int rc;
+ struct msgb *result;
+ char osmux_extension[strlen("\nX-Osmux: 255") + 1];
+ char local_ip_addr[INET_ADDRSTRLEN];
+
+ sdp = msgb_alloc_headroom(4096, 128, "sdp record");
+ if (!sdp)
+ return NULL;
+
+ if (!addr) {
+ mgcp_get_local_addr(local_ip_addr, conn);
+ addr = local_ip_addr;
+ }
+
+ if (conn->osmux.state == OSMUX_STATE_NEGOTIATING) {
+ sprintf(osmux_extension, "\nX-Osmux: %u", conn->osmux.cid);
+ conn->osmux.state = OSMUX_STATE_ACTIVATING;
+ } else {
+ osmux_extension[0] = '\0';
+ }
+
+ rc = msgb_printf(sdp, "I: %u%s\n\n", conn->conn->id, osmux_extension);
+ if (rc < 0)
+ goto error;
+
+ rc = mgcp_write_response_sdp(endp, conn, sdp, addr);
+ if (rc < 0)
+ goto error;
+ result = create_resp(endp, 200, " OK", msg, trans_id, NULL, (char*) sdp->data);
+ msgb_free(sdp);
+ return result;
+error:
+ msgb_free(sdp);
+ return NULL;
+}
+
+/* Send out dummy packet to keep the connection open, if the connection is an
+ * osmux connection, send the dummy packet via OSMUX */
+static void send_dummy(struct mgcp_endpoint *endp, struct mgcp_conn_rtp *conn)
+{
+ if (conn->osmux.state != OSMUX_STATE_DISABLED)
+ osmux_send_dummy(endp, conn);
+ else
+ mgcp_send_dummy(endp, conn);
+}
+
+/* handle incoming messages:
+ * - this can be a command (four letters, space, transaction id)
+ * - or a response (three numbers, space, transaction id) */
+struct msgb *mgcp_handle_message(struct mgcp_config *cfg, struct msgb *msg)
+{
+ struct mgcp_parse_data pdata;
+ int i, code, handled = 0;
+ struct msgb *resp = NULL;
+ char *data;
+
+ if (msgb_l2len(msg) < 4) {
+ LOGP(DLMGCP, LOGL_ERROR, "msg too short: %d\n", msg->len);
+ return NULL;
+ }
+
+ if (mgcp_msg_terminate_nul(msg))
+ return NULL;
+
+ mgcp_disp_msg(msg->l2h, msgb_l2len(msg), "Received message");
+
+ /* attempt to treat it as a response */
+ if (sscanf((const char *)&msg->l2h[0], "%3d %*s", &code) == 1) {
+ LOGP(DLMGCP, LOGL_DEBUG, "Response: Code: %d\n", code);
+ return NULL;
+ }
+
+ msg->l3h = &msg->l2h[4];
+
+ /*
+ * Check for a duplicate message and respond.
+ */
+ memset(&pdata, 0, sizeof(pdata));
+ pdata.cfg = cfg;
+ data = mgcp_strline((char *)msg->l3h, &pdata.save);
+ pdata.found = mgcp_parse_header(&pdata, data);
+ if (pdata.endp && pdata.trans
+ && pdata.endp->last_trans
+ && strcmp(pdata.endp->last_trans, pdata.trans) == 0) {
+ return do_retransmission(pdata.endp);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(mgcp_requests); ++i) {
+ if (strncmp
+ (mgcp_requests[i].name, (const char *)&msg->l2h[0],
+ 4) == 0) {
+ handled = 1;
+ resp = mgcp_requests[i].handle_request(&pdata);
+ break;
+ }
+ }
+
+ if (!handled)
+ LOGP(DLMGCP, LOGL_NOTICE, "MSG with type: '%.4s' not handled\n",
+ &msg->l2h[0]);
+
+ return resp;
+}
+
+/* AUEP command handler, processes the received command */
+static struct msgb *handle_audit_endpoint(struct mgcp_parse_data *p)
+{
+ LOGP(DLMGCP, LOGL_NOTICE, "AUEP: auditing endpoint ...\n");
+
+ if (p->found != 0) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "AUEP: failed to find the endpoint.\n");
+ return create_err_response(NULL, 500, "AUEP", p->trans);
+ } else
+ return create_ok_response(p->endp, 200, "AUEP", p->trans);
+}
+
+/* Try to find a free port by attemting to bind on it. Also handle the
+ * counter that points on the next free port. Since we have a pointer
+ * to the next free port, binding should work on the first attemt,
+ * neverless, try at least the next 200 ports before giving up */
+static int allocate_port(struct mgcp_endpoint *endp, struct mgcp_conn_rtp *conn)
+{
+ int i;
+ struct mgcp_rtp_end *end;
+ struct mgcp_port_range *range;
+
+ OSMO_ASSERT(conn);
+ end = &conn->end;
+ OSMO_ASSERT(end);
+
+ range = &endp->cfg->net_ports;
+
+ /* attempt to find a port */
+ for (i = 0; i < 200; ++i) {
+ int rc;
+
+ if (range->last_port >= range->range_end)
+ range->last_port = range->range_start;
+
+ rc = mgcp_bind_net_rtp_port(endp, range->last_port, conn);
+
+ range->last_port += 2;
+ if (rc == 0) {
+ return 0;
+ }
+
+ }
+
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Allocating a RTP/RTCP port failed 200 times 0x%x.\n",
+ ENDPOINT_NUMBER(endp));
+ return -1;
+}
+
+/* Set the LCO from a string (see RFC 3435).
+ * The string is stored in the 'string' field. A NULL string is handled excatlyy
+ * like an empty string, the 'string' field is never NULL after this function
+ * has been called. */
+static void set_local_cx_options(void *ctx, struct mgcp_lco *lco,
+ const char *options)
+{
+ char *p_opt, *a_opt;
+ char codec[9];
+
+ talloc_free(lco->string);
+ talloc_free(lco->codec);
+ lco->codec = NULL;
+ lco->pkt_period_min = lco->pkt_period_max = 0;
+ lco->string = talloc_strdup(ctx, options ? options : "");
+
+ p_opt = strstr(lco->string, "p:");
+ if (p_opt && sscanf(p_opt, "p:%d-%d",
+ &lco->pkt_period_min, &lco->pkt_period_max) == 1)
+ lco->pkt_period_max = lco->pkt_period_min;
+
+ a_opt = strstr(lco->string, "a:");
+ if (a_opt && sscanf(a_opt, "a:%8[^,]", codec) == 1)
+ lco->codec = talloc_strdup(ctx, codec);
+
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "local CX options: lco->pkt_period_max: %i, lco->codec: %s\n",
+ lco->pkt_period_max, lco->codec);
+}
+
+void mgcp_rtp_end_config(struct mgcp_endpoint *endp, int expect_ssrc_change,
+ struct mgcp_rtp_end *rtp)
+{
+ struct mgcp_trunk_config *tcfg = endp->tcfg;
+
+ int patch_ssrc = expect_ssrc_change && tcfg->force_constant_ssrc;
+
+ rtp->force_aligned_timing = tcfg->force_aligned_timing;
+ rtp->force_constant_ssrc = patch_ssrc ? 1 : 0;
+
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "Configuring RTP endpoint: local port %d%s%s\n",
+ ntohs(rtp->rtp_port),
+ rtp->force_aligned_timing ? ", force constant timing" : "",
+ rtp->force_constant_ssrc ? ", force constant ssrc" : "");
+}
+
+uint32_t mgcp_rtp_packet_duration(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_end *rtp)
+{
+ int f = 0;
+
+ /* Get the number of frames per channel and packet */
+ if (rtp->frames_per_packet)
+ f = rtp->frames_per_packet;
+ else if (rtp->packet_duration_ms && rtp->codec.frame_duration_num) {
+ int den = 1000 * rtp->codec.frame_duration_num;
+ f = (rtp->packet_duration_ms * rtp->codec.frame_duration_den +
+ den / 2)
+ / den;
+ }
+
+ return rtp->codec.rate * f * rtp->codec.frame_duration_num /
+ rtp->codec.frame_duration_den;
+}
+
+static int mgcp_osmux_setup(struct mgcp_endpoint *endp, const char *line)
+{
+ if (!endp->cfg->osmux_init) {
+ if (osmux_init(OSMUX_ROLE_BSC, endp->cfg) < 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "Cannot init OSMUX\n");
+ return -1;
+ }
+ LOGP(DLMGCP, LOGL_NOTICE, "OSMUX socket has been set up\n");
+ }
+
+ return mgcp_parse_osmux_cid(line);
+}
+
+/* CRCX command handler, processes the received command */
+static struct msgb *handle_create_con(struct mgcp_parse_data *p)
+{
+ struct mgcp_trunk_config *tcfg;
+ struct mgcp_endpoint *endp = p->endp;
+ int error_code = 400;
+
+ const char *local_options = NULL;
+ const char *callid = NULL;
+ const char *ci = NULL;
+ const char *mode = NULL;
+ char *line;
+ int have_sdp = 0, osmux_cid = -1;
+ struct mgcp_conn_rtp *conn = NULL;
+ uint32_t conn_id;
+ char conn_name[512];
+
+ LOGP(DLMGCP, LOGL_NOTICE, "CRCX: creating new connection ...\n");
+
+ if (p->found != 0)
+ return create_err_response(NULL, 510, "CRCX", p->trans);
+
+ /* parse CallID C: and LocalParameters L: */
+ for_each_line(line, p->save) {
+ if (!mgcp_check_param(endp, line))
+ continue;
+
+ switch (line[0]) {
+ case 'L':
+ local_options = (const char *)line + 3;
+ break;
+ case 'C':
+ callid = (const char *)line + 3;
+ break;
+ case 'I':
+ ci = (const char *)line + 3;
+ break;
+ case 'M':
+ mode = (const char *)line + 3;
+ break;
+ case 'X':
+ /* If osmoux is disabled, just skip setting it up */
+ if (!p->endp->cfg->osmux)
+ break;
+ if (strncmp("Osmux: ", line + 2, strlen("Osmux: ")) ==
+ 0)
+ osmux_cid = mgcp_osmux_setup(endp, line);
+ break;
+ case '\0':
+ have_sdp = 1;
+ goto mgcp_header_done;
+ default:
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "CRCX: endpoint:%x unhandled option: '%c'/%d\n",
+ ENDPOINT_NUMBER(endp), *line, *line);
+ break;
+ }
+ }
+
+mgcp_header_done:
+ tcfg = p->endp->tcfg;
+
+ /* Check parameters */
+ if (!callid) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "CRCX: endpoint:%x insufficient parameters, missing callid\n",
+ ENDPOINT_NUMBER(endp));
+ return create_err_response(endp, 400, "CRCX", p->trans);
+ }
+
+ if (!mode) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "CRCX: endpoint:%x insufficient parameters, missing mode\n",
+ ENDPOINT_NUMBER(endp));
+ return create_err_response(endp, 400, "CRCX", p->trans);
+ }
+
+ if (!ci) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "CRCX: endpoint:%x insufficient parameters, missing connection id\n",
+ ENDPOINT_NUMBER(endp));
+ return create_err_response(endp, 400, "CRCX", p->trans);
+ }
+
+ /* Check if we are able to accept the creation of another connection */
+ if (llist_count(&endp->conns) >= endp->type->max_conns) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "CRCX: endpoint:%x endpoint full, max. %i connections allowed!\n",
+ endp->type->max_conns, ENDPOINT_NUMBER(endp));
+ if (tcfg->force_realloc) {
+ /* There is no more room for a connection, make some
+ * room by blindly tossing the oldest of the two two
+ * connections */
+ mgcp_conn_free_oldest(endp);
+ } else {
+ /* There is no more room for a connection, leave
+ * everything as it is and return with an error */
+ return create_err_response(endp, 400, "CRCX", p->trans);
+ }
+ }
+
+ /* Check if this endpoint already serves a call, if so, check if the
+ * callids match up so that we are sure that this is our call */
+ if (endp->callid && mgcp_verify_call_id(endp, callid)) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "CRCX: endpoint:%x allready seized by other call (%s)\n",
+ ENDPOINT_NUMBER(endp), endp->callid);
+ if (tcfg->force_realloc)
+ /* This is not our call, toss everything by releasing
+ * the entire endpoint. (rude!) */
+ mgcp_release_endp(endp);
+ else {
+ /* This is not our call, leave everything as it is and
+ * return with an error. */
+ return create_err_response(endp, 400, "CRCX", p->trans);
+ }
+ }
+
+ /* Set the callid, creation of another connection will only be possible
+ * when the callid matches up. (Connections are distinuished by their
+ * connection ids) */
+ endp->callid = talloc_strdup(tcfg->endpoints, callid);
+
+ /* Extract audio codec information */
+ set_local_cx_options(endp->tcfg->endpoints, &endp->local_options,
+ local_options);
+
+ if (mgcp_parse_ci(&conn_id, ci)) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "CRCX: endpoint:%x insufficient parameters, missing ci (connectionIdentifier)\n",
+ ENDPOINT_NUMBER(endp));
+ return create_err_response(endp, 400, "CRCX", p->trans);
+ }
+
+ /* Only accept another connection when the connection ID is different. */
+ if (mgcp_conn_get_rtp(endp, conn_id)) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "CRCX: endpoint:%x there is already a connection with id %u present!\n",
+ conn_id, ENDPOINT_NUMBER(endp));
+ if (tcfg->force_realloc) {
+ /* Ignore the existing connection by just freeing it */
+ mgcp_conn_free(endp, conn_id);
+ } else {
+ /* There is already a connection with that ID present,
+ * leave everything as it is and return with an error. */
+ return create_err_response(endp, 400, "CRCX", p->trans);
+ }
+ }
+
+ snprintf(conn_name, sizeof(conn_name), "%s-%u", callid, conn_id);
+ mgcp_conn_alloc(NULL, endp, conn_id, MGCP_CONN_TYPE_RTP,
+ conn_name);
+ conn = mgcp_conn_get_rtp(endp, conn_id);
+ if (!conn) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "CRCX: endpoint:%x unable to allocate RTP connection\n",
+ ENDPOINT_NUMBER(endp));
+ goto error2;
+
+ }
+
+ if (mgcp_parse_conn_mode(mode, endp, conn->conn) != 0) {
+ error_code = 517;
+ goto error2;
+ }
+
+ /* Annotate Osmux circuit ID and set it to negotiating state until this
+ * is fully set up from the dummy load. */
+ conn->osmux.state = OSMUX_STATE_DISABLED;
+ if (osmux_cid >= 0) {
+ conn->osmux.cid = osmux_cid;
+ conn->osmux.state = OSMUX_STATE_NEGOTIATING;
+ } else if (endp->cfg->osmux == OSMUX_USAGE_ONLY) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "CRCX: endpoint:%x osmux only and no osmux offered\n",
+ ENDPOINT_NUMBER(endp));
+ goto error2;
+ }
+
+ /* set up RTP media parameters */
+ if (have_sdp)
+ mgcp_parse_sdp_data(endp, conn, p);
+ else if (endp->local_options.codec)
+ mgcp_set_audio_info(p->cfg, &conn->end.codec,
+ PTYPE_UNDEFINED, endp->local_options.codec);
+ conn->end.fmtp_extra = talloc_strdup(tcfg->endpoints,
+ tcfg->audio_fmtp_extra);
+
+ if (p->cfg->force_ptime) {
+ conn->end.packet_duration_ms = p->cfg->force_ptime;
+ conn->end.force_output_ptime = 1;
+ }
+
+ mgcp_rtp_end_config(endp, 0, &conn->end);
+
+ if (allocate_port(endp, conn) != 0) {
+ goto error2;
+ }
+
+ if (setup_rtp_processing(endp, conn) != 0) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "CRCX: endpoint:%x could not start RTP processing!\n",
+ ENDPOINT_NUMBER(endp));
+ goto error2;
+ }
+
+ /* policy CB */
+ if (p->cfg->policy_cb) {
+ int rc;
+ rc = p->cfg->policy_cb(tcfg, ENDPOINT_NUMBER(endp),
+ MGCP_ENDP_CRCX, p->trans);
+ switch (rc) {
+ case MGCP_POLICY_REJECT:
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "CRCX: endpoint:%x CRCX rejected by policy\n",
+ ENDPOINT_NUMBER(endp));
+ mgcp_release_endp(endp);
+ return create_err_response(endp, 400, "CRCX", p->trans);
+ break;
+ case MGCP_POLICY_DEFER:
+ /* stop processing */
+ return NULL;
+ break;
+ case MGCP_POLICY_CONT:
+ /* just continue */
+ break;
+ }
+ }
+
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "CRCX: endpoint:%x Creating connection: CI: %u port: %u\n",
+ ENDPOINT_NUMBER(endp), conn->conn->id, conn->end.local_port);
+ if (p->cfg->change_cb)
+ p->cfg->change_cb(tcfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_CRCX);
+
+ /* Send dummy packet, see also comments in mgcp_keepalive_timer_cb() */
+ OSMO_ASSERT(tcfg->keepalive_interval >= MGCP_KEEPALIVE_ONCE);
+ if (conn->conn->mode & MGCP_CONN_RECV_ONLY
+ && tcfg->keepalive_interval != MGCP_KEEPALIVE_NEVER)
+ send_dummy(endp, conn);
+
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "CRCX: endpoint:%x connection successfully created\n",
+ ENDPOINT_NUMBER(endp));
+ return create_response_with_sdp(endp, conn, "CRCX", p->trans);
+error2:
+ mgcp_release_endp(endp);
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "CRCX: endpoint:%x unable to create connection resource error\n",
+ ENDPOINT_NUMBER(endp));
+ return create_err_response(endp, error_code, "CRCX", p->trans);
+}
+
+/* MDCX command handler, processes the received command */
+static struct msgb *handle_modify_con(struct mgcp_parse_data *p)
+{
+ struct mgcp_endpoint *endp = p->endp;
+ int error_code = 500;
+ int silent = 0;
+ int have_sdp = 0;
+ char *line;
+ const char *ci = NULL;
+ const char *local_options = NULL;
+ const char *mode = NULL;
+ struct mgcp_conn_rtp *conn = NULL;
+ uint32_t conn_id;
+
+ LOGP(DLMGCP, LOGL_NOTICE, "MDCX: modifying existing connection ...\n");
+
+ if (p->found != 0)
+ return create_err_response(NULL, 510, "MDCX", p->trans);
+
+ if (llist_count(&endp->conns) <= 0) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "MDCX: endpoint:%x endpoint is not holding a connection.\n",
+ ENDPOINT_NUMBER(endp));
+ return create_err_response(endp, 400, "MDCX", p->trans);
+ }
+
+ for_each_line(line, p->save) {
+ if (!mgcp_check_param(endp, line))
+ continue;
+
+ switch (line[0]) {
+ case 'C':
+ if (mgcp_verify_call_id(endp, line + 3) != 0)
+ goto error3;
+ break;
+ case 'I':
+ ci = (const char *)line + 3;
+ if (mgcp_verify_ci(endp, ci) != 0)
+ goto error3;
+ break;
+ case 'L':
+ local_options = (const char *)line + 3;
+ break;
+ case 'M':
+ mode = (const char *)line + 3;
+ break;
+ case 'Z':
+ silent = strcmp("noanswer", line + 3) == 0;
+ break;
+ case '\0':
+ have_sdp = 1;
+ goto mgcp_header_done;
+ break;
+ default:
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "MDCX: endpoint:%x Unhandled MGCP option: '%c'/%d\n",
+ ENDPOINT_NUMBER(endp), line[0], line[0]);
+ break;
+ }
+ }
+
+mgcp_header_done:
+ if (mgcp_parse_ci(&conn_id, ci)) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "MDCX: endpoint:%x insufficient parameters, missing ci (connectionIdentifier)\n",
+ ENDPOINT_NUMBER(endp));
+ return create_err_response(endp, 400, "MDCX", p->trans);
+ }
+
+ conn = mgcp_conn_get_rtp(endp, conn_id);
+ if (!conn)
+ return create_err_response(endp, 400, "MDCX", p->trans);
+
+ if (mode) {
+ if (mgcp_parse_conn_mode(mode, endp, conn->conn) != 0) {
+ error_code = 517;
+ goto error3;
+ }
+ } else
+ conn->conn->mode = conn->conn->mode_orig;
+
+ if (have_sdp)
+ mgcp_parse_sdp_data(endp, conn, p);
+
+ set_local_cx_options(endp->tcfg->endpoints, &endp->local_options,
+ local_options);
+
+ if (!have_sdp && endp->local_options.codec)
+ mgcp_set_audio_info(p->cfg, &conn->end.codec,
+ PTYPE_UNDEFINED, endp->local_options.codec);
+
+ if (setup_rtp_processing(endp, conn) != 0)
+ goto error3;
+
+
+ /* policy CB */
+ if (p->cfg->policy_cb) {
+ int rc;
+ rc = p->cfg->policy_cb(endp->tcfg, ENDPOINT_NUMBER(endp),
+ MGCP_ENDP_MDCX, p->trans);
+ switch (rc) {
+ case MGCP_POLICY_REJECT:
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "MDCX: endpoint:%x rejected by policy\n",
+ ENDPOINT_NUMBER(endp));
+ if (silent)
+ goto out_silent;
+ return create_err_response(endp, 400, "MDCX", p->trans);
+ break;
+ case MGCP_POLICY_DEFER:
+ /* stop processing */
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "MDCX: endpoint:%x defered by policy\n",
+ ENDPOINT_NUMBER(endp));
+ return NULL;
+ break;
+ case MGCP_POLICY_CONT:
+ /* just continue */
+ break;
+ }
+ }
+
+ mgcp_rtp_end_config(endp, 1, &conn->end);
+
+ /* modify */
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "MDCX: endpoint:%x modified conn:%s\n",
+ ENDPOINT_NUMBER(endp), mgcp_conn_dump(conn->conn));
+ if (p->cfg->change_cb)
+ p->cfg->change_cb(endp->tcfg, ENDPOINT_NUMBER(endp),
+ MGCP_ENDP_MDCX);
+
+ /* Send dummy packet, see also comments in mgcp_keepalive_timer_cb() */
+ OSMO_ASSERT(endp->tcfg->keepalive_interval >= MGCP_KEEPALIVE_ONCE);
+ if (conn->conn->mode & MGCP_CONN_RECV_ONLY
+ && endp->tcfg->keepalive_interval != MGCP_KEEPALIVE_NEVER)
+ send_dummy(endp, conn);
+
+ if (silent)
+ goto out_silent;
+
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "MDCX: endpoint:%x connection successfully modified\n",
+ ENDPOINT_NUMBER(endp));
+ return create_response_with_sdp(endp, conn, "MDCX", p->trans);
+error3:
+ return create_err_response(endp, error_code, "MDCX", p->trans);
+
+out_silent:
+ LOGP(DLMGCP, LOGL_DEBUG, "MDCX: endpoint:%x silent exit\n",
+ ENDPOINT_NUMBER(endp));
+ return NULL;
+}
+
+/* DLCX command handler, processes the received command */
+static struct msgb *handle_delete_con(struct mgcp_parse_data *p)
+{
+ struct mgcp_endpoint *endp = p->endp;
+ int error_code = 400;
+ int silent = 0;
+ char *line;
+ char stats[1048];
+ const char *ci = NULL;
+ struct mgcp_conn_rtp *conn = NULL;
+ uint32_t conn_id;
+
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "DLCX: endpoint:%x deleting connection ...\n",
+ ENDPOINT_NUMBER(endp));
+
+ if (p->found != 0)
+ return create_err_response(NULL, error_code, "DLCX", p->trans);
+
+ if (llist_count(&endp->conns) <= 0) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "DLCX: endpoint:%x endpoint is not holding a connection.\n",
+ ENDPOINT_NUMBER(endp));
+ return create_err_response(endp, 400, "DLCX", p->trans);
+ }
+
+ for_each_line(line, p->save) {
+ if (!mgcp_check_param(endp, line))
+ continue;
+
+ switch (line[0]) {
+ case 'C':
+ if (mgcp_verify_call_id(endp, line + 3) != 0)
+ goto error3;
+ break;
+ case 'I':
+ ci = (const char *)line + 3;
+ if (mgcp_verify_ci(endp, ci) != 0)
+ goto error3;
+ break;
+ case 'Z':
+ silent = strcmp("noanswer", line + 3) == 0;
+ break;
+ default:
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "DLCX: endpoint:%x Unhandled MGCP option: '%c'/%d\n",
+ ENDPOINT_NUMBER(endp), line[0], line[0]);
+ break;
+ }
+ }
+
+ /* policy CB */
+ if (p->cfg->policy_cb) {
+ int rc;
+ rc = p->cfg->policy_cb(endp->tcfg, ENDPOINT_NUMBER(endp),
+ MGCP_ENDP_DLCX, p->trans);
+ switch (rc) {
+ case MGCP_POLICY_REJECT:
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "DLCX: endpoint:%x rejected by policy\n",
+ ENDPOINT_NUMBER(endp));
+ if (silent)
+ goto out_silent;
+ return create_err_response(endp, 400, "DLCX", p->trans);
+ break;
+ case MGCP_POLICY_DEFER:
+ /* stop processing */
+ return NULL;
+ break;
+ case MGCP_POLICY_CONT:
+ /* just continue */
+ break;
+ }
+ }
+
+ /* When no connection id is supplied, we will interpret this as a
+ * wildcarded DLCX and drop all connections at once. (See also
+ * RFC3435 Section F.7) */
+ if (!ci) {
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "DLCX: endpoint:%x missing ci (connectionIdentifier), will remove all connections at once\n",
+ ENDPOINT_NUMBER(endp));
+
+ mgcp_release_endp(endp);
+
+ /* Note: In this case we do not return any statistics,
+ * as we assume that the client is not interested in
+ * this case. */
+ return create_ok_response(endp, 200, "DLCX", p->trans);
+ }
+
+ /* Parse the connection id */
+ if (mgcp_parse_ci(&conn_id, ci)) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "DLCX: endpoint:%x insufficient parameters, invalid ci (connectionIdentifier)\n",
+ ENDPOINT_NUMBER(endp));
+ return create_err_response(endp, 400, "DLCX", p->trans);
+ }
+
+ /* Find the connection */
+ conn = mgcp_conn_get_rtp(endp, conn_id);
+ if (!conn)
+ goto error3;
+
+ /* save the statistics of the current connection */
+ mgcp_format_stats(stats, sizeof(stats), conn->conn);
+
+ /* delete connection */
+ LOGP(DLMGCP, LOGL_DEBUG, "DLCX: endpoint:%x deleting conn:%s\n",
+ ENDPOINT_NUMBER(endp), mgcp_conn_dump(conn->conn));
+ mgcp_conn_free(endp, conn_id);
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "DLCX: endpoint:%x connection successfully deleted\n",
+ ENDPOINT_NUMBER(endp));
+
+ /* When all connections are closed, the endpoint will be released
+ * in order to be ready to be used by another call. */
+ if (llist_count(&endp->conns) <= 0) {
+ mgcp_release_endp(endp);
+ LOGP(DLMGCP, LOGL_DEBUG,
+ "DLCX: endpoint:%x endpoint released\n",
+ ENDPOINT_NUMBER(endp));
+ }
+
+ if (p->cfg->change_cb)
+ p->cfg->change_cb(endp->tcfg, ENDPOINT_NUMBER(endp),
+ MGCP_ENDP_DLCX);
+
+ if (silent)
+ goto out_silent;
+ return create_ok_resp_with_param(endp, 250, "DLCX", p->trans, stats);
+
+error3:
+ return create_err_response(endp, error_code, "DLCX", p->trans);
+
+out_silent:
+ LOGP(DLMGCP, LOGL_DEBUG, "DLCX: endpoint:%x silent exit\n",
+ ENDPOINT_NUMBER(endp));
+ return NULL;
+}
+
+/* RSIP command handler, processes the received command */
+static struct msgb *handle_rsip(struct mgcp_parse_data *p)
+{
+ /* TODO: Also implement the resetting of a specific endpoint
+ * to make mgcp_send_reset_ep() work. Currently this will call
+ * mgcp_rsip_cb() in mgw_main.c, which sets reset_endpoints=1
+ * to make read_call_agent() reset all endpoints when called
+ * next time. In order to selectively reset endpoints some
+ * mechanism to distinguish which endpoint shall be resetted
+ * is needed */
+
+ LOGP(DLMGCP, LOGL_NOTICE, "RSIP: resetting all endpoints ...\n");
+
+ if (p->found != 0) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "RSIP: failed to find the endpoint.\n");
+ return NULL;
+ }
+
+ if (p->cfg->reset_cb)
+ p->cfg->reset_cb(p->endp->tcfg);
+ return NULL;
+}
+
+static char extract_tone(const char *line)
+{
+ const char *str = strstr(line, "D/");
+ if (!str)
+ return CHAR_MAX;
+
+ return str[2];
+}
+
+/* This can request like DTMF detection and forward, fax detection... it
+ * can also request when the notification should be send and such. We don't
+ * do this right now. */
+static struct msgb *handle_noti_req(struct mgcp_parse_data *p)
+{
+ int res = 0;
+ char *line;
+ char tone = CHAR_MAX;
+
+ LOGP(DLMGCP, LOGL_NOTICE, "RQNT: processing request for notification ...\n");
+
+ if (p->found != 0)
+ return create_err_response(NULL, 400, "RQNT", p->trans);
+
+ for_each_line(line, p->save) {
+ switch (line[0]) {
+ case 'S':
+ tone = extract_tone(line);
+ break;
+ }
+ }
+
+ /* we didn't see a signal request with a tone */
+ if (tone == CHAR_MAX)
+ return create_ok_response(p->endp, 200, "RQNT", p->trans);
+
+ if (p->cfg->rqnt_cb)
+ res = p->cfg->rqnt_cb(p->endp, tone);
+
+ return res == 0 ?
+ create_ok_response(p->endp, 200, "RQNT", p->trans) :
+ create_err_response(p->endp, res, "RQNT", p->trans);
+}
+
+/* Connection keepalive timer, will take care that dummy packets are send
+ * regulary, so that NAT connections stay open */
+static void mgcp_keepalive_timer_cb(void *_tcfg)
+{
+ struct mgcp_trunk_config *tcfg = _tcfg;
+ struct mgcp_conn *conn;
+ int i;
+
+ LOGP(DLMGCP, LOGL_DEBUG, "triggered trunk %d keepalive timer\n",
+ tcfg->trunk_nr);
+
+ /* Do not accept invalid configuration values
+ * valid is MGCP_KEEPALIVE_NEVER, MGCP_KEEPALIVE_ONCE and
+ * values greater 0 */
+ OSMO_ASSERT(tcfg->keepalive_interval >= MGCP_KEEPALIVE_ONCE);
+
+ /* The dummy packet functionality has been disabled, we will exit
+ * immediately, no further timer is scheduled, which means we will no
+ * longer send dummy packets even when we did before */
+ if (tcfg->keepalive_interval == MGCP_KEEPALIVE_NEVER)
+ return;
+
+ /* In cases where only one dummy packet is sent, we do not need
+ * the timer since the functions that handle the CRCX and MDCX are
+ * triggering the sending of the dummy packet. So we behave like in
+ * the MGCP_KEEPALIVE_NEVER case */
+ if (tcfg->keepalive_interval == MGCP_KEEPALIVE_ONCE)
+ return;
+
+ /* Send walk over all endpoints and send out dummy packets through
+ * every connection present on each endpoint */
+ for (i = 1; i < tcfg->number_endpoints; ++i) {
+ struct mgcp_endpoint *endp = &tcfg->endpoints[i];
+ llist_for_each_entry(conn, &endp->conns, entry) {
+ if (conn->mode == MGCP_CONN_RECV_ONLY)
+ send_dummy(endp, &conn->u.rtp);
+ }
+ }
+
+ /* Schedule the keepalive timer for the next round */
+ LOGP(DLMGCP, LOGL_DEBUG, "rescheduling trunk %d keepalive timer\n",
+ tcfg->trunk_nr);
+ osmo_timer_schedule(&tcfg->keepalive_timer, tcfg->keepalive_interval,
+ 0);
+}
+
+void mgcp_trunk_set_keepalive(struct mgcp_trunk_config *tcfg, int interval)
+{
+ tcfg->keepalive_interval = interval;
+ osmo_timer_setup(&tcfg->keepalive_timer, mgcp_keepalive_timer_cb, tcfg);
+
+ if (interval <= 0)
+ osmo_timer_del(&tcfg->keepalive_timer);
+ else
+ osmo_timer_schedule(&tcfg->keepalive_timer,
+ tcfg->keepalive_interval, 0);
+}
+
+/*! allocate configuration with default values.
+ * (called once at startup by main function) */
+struct mgcp_config *mgcp_config_alloc(void)
+{
+ struct mgcp_config *cfg;
+
+ cfg = talloc_zero(NULL, struct mgcp_config);
+ if (!cfg) {
+ LOGP(DLMGCP, LOGL_FATAL, "Failed to allocate config.\n");
+ return NULL;
+ }
+
+ cfg->net_ports.range_start = RTP_PORT_DEFAULT_RANGE_START;
+ cfg->net_ports.range_end = RTP_PORT_DEFAULT_RANGE_END;
+ cfg->net_ports.last_port = cfg->net_ports.range_start;
+
+ cfg->source_port = 2427;
+ cfg->source_addr = talloc_strdup(cfg, "0.0.0.0");
+ cfg->osmux_addr = talloc_strdup(cfg, "0.0.0.0");
+
+ cfg->rtp_processing_cb = &mgcp_rtp_processing_default;
+ cfg->setup_rtp_processing_cb = &mgcp_setup_rtp_processing_default;
+
+ cfg->get_net_downlink_format_cb = &mgcp_get_net_downlink_format_default;
+
+ /* default trunk handling */
+ cfg->trunk.cfg = cfg;
+ cfg->trunk.trunk_nr = 0;
+ cfg->trunk.trunk_type = MGCP_TRUNK_VIRTUAL;
+ cfg->trunk.audio_name = talloc_strdup(cfg, "AMR/8000");
+ cfg->trunk.audio_payload = 126;
+ cfg->trunk.audio_send_ptime = 1;
+ cfg->trunk.audio_send_name = 1;
+ cfg->trunk.omit_rtcp = 0;
+ mgcp_trunk_set_keepalive(&cfg->trunk, MGCP_KEEPALIVE_ONCE);
+
+ INIT_LLIST_HEAD(&cfg->trunks);
+
+ return cfg;
+}
+
+/*! allocate configuration with default values.
+ * (called once at startup by VTY)
+ * \param[in] cfg mgcp configuration
+ * \param[in] nr trunk number
+ * \returns pointer to allocated trunk configuration */
+struct mgcp_trunk_config *mgcp_trunk_alloc(struct mgcp_config *cfg, int nr)
+{
+ struct mgcp_trunk_config *trunk;
+
+ trunk = talloc_zero(cfg, struct mgcp_trunk_config);
+ if (!trunk) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to allocate.\n");
+ return NULL;
+ }
+
+ trunk->cfg = cfg;
+ trunk->trunk_type = MGCP_TRUNK_E1;
+ trunk->trunk_nr = nr;
+ trunk->audio_name = talloc_strdup(cfg, "AMR/8000");
+ trunk->audio_payload = 126;
+ trunk->audio_send_ptime = 1;
+ trunk->audio_send_name = 1;
+ trunk->number_endpoints = 33;
+ trunk->omit_rtcp = 0;
+ mgcp_trunk_set_keepalive(trunk, MGCP_KEEPALIVE_ONCE);
+ llist_add_tail(&trunk->entry, &cfg->trunks);
+ return trunk;
+}
+
+/*! get trunk configuration by trunk number (index).
+ * \param[in] cfg mgcp configuration
+ * \param[in] index trunk number
+ * \returns pointer to trunk configuration, NULL on error */
+struct mgcp_trunk_config *mgcp_trunk_num(struct mgcp_config *cfg, int index)
+{
+ struct mgcp_trunk_config *trunk;
+
+ llist_for_each_entry(trunk, &cfg->trunks, entry)
+ if (trunk->trunk_nr == index)
+ return trunk;
+
+ return NULL;
+}
+
+/*! allocate endpoints and set default values.
+ * (called once at startup by VTY)
+ * \param[in] tcfg trunk configuration
+ * \returns 0 on success, -1 on failure */
+int mgcp_endpoints_allocate(struct mgcp_trunk_config *tcfg)
+{
+ int i;
+
+ tcfg->endpoints = _talloc_zero_array(tcfg->cfg,
+ sizeof(struct mgcp_endpoint),
+ tcfg->number_endpoints,
+ "endpoints");
+ if (!tcfg->endpoints)
+ return -1;
+
+ for (i = 0; i < tcfg->number_endpoints; ++i) {
+ INIT_LLIST_HEAD(&tcfg->endpoints[i].conns);
+ tcfg->endpoints[i].cfg = tcfg->cfg;
+ tcfg->endpoints[i].tcfg = tcfg;
+
+ /* NOTE: Currently all endpoints are of type RTP, this will
+ * change when new variations are implemented */
+ tcfg->endpoints[i].type = &ep_typeset.rtp;
+ }
+
+ return 0;
+}
+
+/*! relase endpoint, all open connections are closed.
+ * \param[in] endp endpoint to release */
+void mgcp_release_endp(struct mgcp_endpoint *endp)
+{
+ LOGP(DLMGCP, LOGL_DEBUG, "Releasing endpoint:%x\n",
+ ENDPOINT_NUMBER(endp));
+
+ /* Normally this function should only be called wehen
+ * all connections have been removed already. In case
+ * that there are still connections open (e.g. when
+ * RSIP is executed), free them all at once. */
+ mgcp_conn_free_all(endp);
+
+ /* Reset endpoint parameters and states */
+ talloc_free(endp->callid);
+ endp->callid = NULL;
+ talloc_free(endp->local_options.string);
+ endp->local_options.string = NULL;
+ talloc_free(endp->local_options.codec);
+ endp->local_options.codec = NULL;
+}
+
+static int send_agent(struct mgcp_config *cfg, const char *buf, int len)
+{
+ return write(cfg->gw_fd.bfd.fd, buf, len);
+}
+
+/*! Reset all endpoints by sending RSIP message to self.
+ * (called by VTY)
+ * \param[in] endp trunk endpoint
+ * \param[in] endpoint number
+ * \returns 0 on success, -1 on error */
+int mgcp_send_reset_all(struct mgcp_config *cfg)
+{
+ int rc;
+
+ static const char mgcp_reset[] = {
+ "RSIP 1 *@mgw MGCP 1.0\r\n"
+ };
+
+ rc = send_agent(cfg, mgcp_reset, sizeof mgcp_reset - 1);
+ if (rc <= 0)
+ return -1;
+
+ return 0;
+}
+
+/*! Reset a single endpoint by sending RSIP message to self.
+ * (called by VTY)
+ * \param[in] endp trunk endpoint
+ * \param[in] endpoint number
+ * \returns 0 on success, -1 on error */
+int mgcp_send_reset_ep(struct mgcp_endpoint *endp, int endpoint)
+{
+ char buf[128];
+ int len;
+ int rc;
+
+ len = snprintf(buf, sizeof(buf),
+ "RSIP 39 %x@mgw MGCP 1.0\r\n", endpoint);
+ if (len < 0)
+ return -1;
+
+ buf[sizeof(buf) - 1] = '\0';
+
+ rc = send_agent(endp->cfg, buf, len);
+ if (rc <= 0)
+ return -1;
+
+ return 0;
+}
diff --git a/src/libosmo-mgcp/mgcp_sdp.c b/src/libosmo-mgcp/mgcp_sdp.c
new file mode 100644
index 0000000..f45d6e7
--- /dev/null
+++ b/src/libosmo-mgcp/mgcp_sdp.c
@@ -0,0 +1,409 @@
+/*
+ * Some SDP file parsing...
+ *
+ * (C) 2009-2015 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2014 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <osmocom/core/msgb.h>
+#include <osmocom/mgcp/mgcp.h>
+#include <osmocom/mgcp/mgcp_internal.h>
+#include <osmocom/mgcp/mgcp_msg.h>
+
+#include <errno.h>
+
+struct sdp_rtp_map {
+ /* the type */
+ int payload_type;
+ /* null, static or later dynamic codec name */
+ char *codec_name;
+ /* A pointer to the original line for later parsing */
+ char *map_line;
+
+ int rate;
+ int channels;
+};
+
+/*! Set codec configuration depending on payload type and codec name.
+ * \param[in] ctx talloc context.
+ * \param[out] codec configuration (caller provided memory).
+ * \param[in] payload_type codec type id (e.g. 3 for GSM, -1 when undefined).
+ * \param[in] audio_name audio codec name (e.g. "GSM/8000/1").
+ * \returns 0 on success, -1 on failure. */
+int mgcp_set_audio_info(void *ctx, struct mgcp_rtp_codec *codec,
+ int payload_type, const char *audio_name)
+{
+ int rate = codec->rate;
+ int channels = codec->channels;
+ char audio_codec[64];
+
+ talloc_free(codec->subtype_name);
+ codec->subtype_name = NULL;
+ talloc_free(codec->audio_name);
+ codec->audio_name = NULL;
+
+ if (payload_type != PTYPE_UNDEFINED)
+ codec->payload_type = payload_type;
+
+ if (!audio_name) {
+ switch (payload_type) {
+ case 0:
+ audio_name = "PCMU/8000/1";
+ break;
+ case 3:
+ audio_name = "GSM/8000/1";
+ break;
+ case 8:
+ audio_name = "PCMA/8000/1";
+ break;
+ case 18:
+ audio_name = "G729/8000/1";
+ break;
+ default:
+ /* Payload type is unknown, don't change rate and
+ * channels. */
+ /* TODO: return value? */
+ return 0;
+ }
+ }
+
+ if (sscanf(audio_name, "%63[^/]/%d/%d",
+ audio_codec, &rate, &channels) < 1)
+ return -EINVAL;
+
+ codec->rate = rate;
+ codec->channels = channels;
+ codec->subtype_name = talloc_strdup(ctx, audio_codec);
+ codec->audio_name = talloc_strdup(ctx, audio_name);
+
+ if (!strcmp(audio_codec, "G729")) {
+ codec->frame_duration_num = 10;
+ codec->frame_duration_den = 1000;
+ } else {
+ codec->frame_duration_num = DEFAULT_RTP_AUDIO_FRAME_DUR_NUM;
+ codec->frame_duration_den = DEFAULT_RTP_AUDIO_FRAME_DUR_DEN;
+ }
+
+ if (payload_type < 0) {
+ payload_type = 96;
+ if (rate == 8000 && channels == 1) {
+ if (!strcmp(audio_codec, "GSM"))
+ payload_type = 3;
+ else if (!strcmp(audio_codec, "PCMA"))
+ payload_type = 8;
+ else if (!strcmp(audio_codec, "PCMU"))
+ payload_type = 0;
+ else if (!strcmp(audio_codec, "G729"))
+ payload_type = 18;
+ }
+
+ codec->payload_type = payload_type;
+ }
+
+ if (channels != 1)
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "Channels != 1 in SDP: '%s'\n", audio_name);
+
+ return 0;
+}
+
+static void codecs_initialize(void *ctx, struct sdp_rtp_map *codecs, int used)
+{
+ int i;
+
+ for (i = 0; i < used; ++i) {
+ switch (codecs[i].payload_type) {
+ case 0:
+ codecs[i].codec_name = "PCMU";
+ codecs[i].rate = 8000;
+ codecs[i].channels = 1;
+ break;
+ case 3:
+ codecs[i].codec_name = "GSM";
+ codecs[i].rate = 8000;
+ codecs[i].channels = 1;
+ break;
+ case 8:
+ codecs[i].codec_name = "PCMA";
+ codecs[i].rate = 8000;
+ codecs[i].channels = 1;
+ break;
+ case 18:
+ codecs[i].codec_name = "G729";
+ codecs[i].rate = 8000;
+ codecs[i].channels = 1;
+ break;
+ }
+ }
+}
+
+static void codecs_update(void *ctx, struct sdp_rtp_map *codecs, int used,
+ int payload, const char *audio_name)
+{
+ int i;
+
+ for (i = 0; i < used; ++i) {
+ char audio_codec[64];
+ int rate = -1;
+ int channels = -1;
+ if (codecs[i].payload_type != payload)
+ continue;
+ if (sscanf(audio_name, "%63[^/]/%d/%d",
+ audio_codec, &rate, &channels) < 1) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to parse '%s'\n",
+ audio_name);
+ continue;
+ }
+
+ codecs[i].map_line = talloc_strdup(ctx, audio_name);
+ codecs[i].codec_name = talloc_strdup(ctx, audio_codec);
+ codecs[i].rate = rate;
+ codecs[i].channels = channels;
+ return;
+ }
+
+ LOGP(DLMGCP, LOGL_ERROR, "Unconfigured PT(%d) with %s\n", payload,
+ audio_name);
+}
+
+/* Check if the codec matches what is set up in the trunk config */
+static int is_codec_compatible(const struct mgcp_endpoint *endp,
+ const struct sdp_rtp_map *codec)
+{
+ char *codec_str;
+ char audio_codec[64];
+
+ if (!codec->codec_name)
+ return 0;
+
+ /* GSM, GSM/8000 and GSM/8000/1 should all be compatible...
+ * let's go by name first. */
+ codec_str = endp->tcfg->audio_name;
+ if (sscanf(codec_str, "%63[^/]/%*d/%*d", audio_codec) < 1)
+ return 0;
+
+ return strcasecmp(audio_codec, codec->codec_name) == 0;
+}
+
+/*! Analyze SDP input string.
+ * \param[in] endp trunk endpoint.
+ * \param[out] conn associated rtp connection.
+ * \param[out] caller provided memory to store the parsing results.
+ * \returns 0 on success, -1 on failure.
+ *
+ * Note: In conn (conn->end) the function returns the packet duration,
+ * the rtp port and the rtcp port */
+int mgcp_parse_sdp_data(const struct mgcp_endpoint *endp,
+ struct mgcp_conn_rtp *conn,
+ struct mgcp_parse_data *p)
+{
+ struct sdp_rtp_map codecs[10];
+ int codecs_used = 0;
+ char *line;
+ int maxptime = -1;
+ int i;
+ int codecs_assigned = 0;
+ void *tmp_ctx = talloc_new(NULL);
+ struct mgcp_rtp_end *rtp;
+
+ int payload;
+ int ptime, ptime2 = 0;
+ char audio_name[64];
+ int port, rc;
+ char ipv4[16];
+
+ OSMO_ASSERT(endp);
+ OSMO_ASSERT(conn);
+ OSMO_ASSERT(p);
+
+ rtp = &conn->end;
+ memset(&codecs, 0, sizeof(codecs));
+
+ for_each_line(line, p->save) {
+ switch (line[0]) {
+ case 'o':
+ case 's':
+ case 't':
+ case 'v':
+ /* skip these SDP attributes */
+ break;
+ case 'a':
+ if (sscanf(line, "a=rtpmap:%d %63s",
+ &payload, audio_name) == 2) {
+ codecs_update(tmp_ctx, codecs,
+ codecs_used, payload, audio_name);
+ } else
+ if (sscanf
+ (line, "a=ptime:%d-%d", &ptime, &ptime2) >= 1) {
+ if (ptime2 > 0 && ptime2 != ptime)
+ rtp->packet_duration_ms = 0;
+ else
+ rtp->packet_duration_ms = ptime;
+ } else if (sscanf(line, "a=maxptime:%d", &ptime2)
+ == 1) {
+ maxptime = ptime2;
+ }
+ break;
+ case 'm':
+ rc = sscanf(line,
+ "m=audio %d RTP/AVP %d %d %d %d %d %d %d %d %d %d",
+ &port, &codecs[0].payload_type,
+ &codecs[1].payload_type,
+ &codecs[2].payload_type,
+ &codecs[3].payload_type,
+ &codecs[4].payload_type,
+ &codecs[5].payload_type,
+ &codecs[6].payload_type,
+ &codecs[7].payload_type,
+ &codecs[8].payload_type,
+ &codecs[9].payload_type);
+ if (rc >= 2) {
+ rtp->rtp_port = htons(port);
+ rtp->rtcp_port = htons(port + 1);
+ codecs_used = rc - 1;
+ codecs_initialize(tmp_ctx, codecs, codecs_used);
+ }
+ break;
+ case 'c':
+
+ if (sscanf(line, "c=IN IP4 %15s", ipv4) == 1) {
+ inet_aton(ipv4, &rtp->addr);
+ }
+ break;
+ default:
+ if (p->endp)
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "Unhandled SDP option: '%c'/%d on 0x%x\n",
+ line[0], line[0],
+ ENDPOINT_NUMBER(p->endp));
+ else
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "Unhandled SDP option: '%c'/%d\n",
+ line[0], line[0]);
+ break;
+ }
+ }
+
+ /* Now select the primary and alt_codec */
+ for (i = 0; i < codecs_used && codecs_assigned < 2; ++i) {
+ struct mgcp_rtp_codec *codec = codecs_assigned == 0 ?
+ &rtp->codec : &rtp->alt_codec;
+
+ if (endp->tcfg->no_audio_transcoding &&
+ !is_codec_compatible(endp, &codecs[i])) {
+ LOGP(DLMGCP, LOGL_NOTICE, "Skipping codec %s\n",
+ codecs[i].codec_name);
+ continue;
+ }
+
+ mgcp_set_audio_info(p->cfg, codec,
+ codecs[i].payload_type, codecs[i].map_line);
+ codecs_assigned += 1;
+ }
+
+ if (codecs_assigned > 0) {
+ /* TODO/XXX: Store this per codec and derive it on use */
+ if (maxptime >= 0 && maxptime * rtp->codec.frame_duration_den >
+ rtp->codec.frame_duration_num * 1500) {
+ /* more than 1 frame */
+ rtp->packet_duration_ms = 0;
+ }
+
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "Got media info via SDP: port %d, payload %d (%s), "
+ "duration %d, addr %s\n",
+ ntohs(rtp->rtp_port), rtp->codec.payload_type,
+ rtp->codec.subtype_name ? rtp->
+ codec.subtype_name : "unknown", rtp->packet_duration_ms,
+ inet_ntoa(rtp->addr));
+ }
+
+ talloc_free(tmp_ctx);
+ return codecs_assigned > 0;
+}
+
+/*! Generate SDP response string.
+ * \param[in] endp trunk endpoint.
+ * \param[in] conn associated rtp connection.
+ * \param[out] sdp msg buffer to append resulting SDP string data.
+ * \param[in] addr IPV4 address string (e.g. 192.168.100.1).
+ * \returns 0 on success, -1 on failure. */
+int mgcp_write_response_sdp(const struct mgcp_endpoint *endp,
+ const struct mgcp_conn_rtp *conn, struct msgb *sdp,
+ const char *addr)
+{
+ const char *fmtp_extra;
+ const char *audio_name;
+ int payload_type;
+ int rc;
+
+ OSMO_ASSERT(endp);
+ OSMO_ASSERT(conn);
+ OSMO_ASSERT(sdp);
+ OSMO_ASSERT(addr);
+
+ /* FIXME: constify endp and conn args in get_net_donwlink_format_cb() */
+ endp->cfg->get_net_downlink_format_cb((struct mgcp_endpoint *)endp,
+ &payload_type, &audio_name,
+ &fmtp_extra,
+ (struct mgcp_conn_rtp *)conn);
+
+ rc = msgb_printf(sdp,
+ "v=0\r\n"
+ "o=- %u 23 IN IP4 %s\r\n"
+ "s=-\r\n"
+ "c=IN IP4 %s\r\n"
+ "t=0 0\r\n", conn->conn->id, addr, addr);
+
+ if (rc < 0)
+ goto buffer_too_small;
+
+ if (payload_type >= 0) {
+ rc = msgb_printf(sdp, "m=audio %d RTP/AVP %d\r\n",
+ conn->end.local_port, payload_type);
+ if (rc < 0)
+ goto buffer_too_small;
+
+ if (audio_name && endp->tcfg->audio_send_name) {
+ rc = msgb_printf(sdp, "a=rtpmap:%d %s\r\n",
+ payload_type, audio_name);
+
+ if (rc < 0)
+ goto buffer_too_small;
+ }
+
+ if (fmtp_extra) {
+ rc = msgb_printf(sdp, "%s\r\n", fmtp_extra);
+
+ if (rc < 0)
+ goto buffer_too_small;
+ }
+ }
+ if (conn->end.packet_duration_ms > 0 && endp->tcfg->audio_send_ptime) {
+ rc = msgb_printf(sdp, "a=ptime:%u\r\n",
+ conn->end.packet_duration_ms);
+ if (rc < 0)
+ goto buffer_too_small;
+ }
+
+ return 0;
+
+buffer_too_small:
+ LOGP(DLMGCP, LOGL_ERROR, "SDP messagebuffer too small\n");
+ return -1;
+}
diff --git a/src/libosmo-mgcp/mgcp_stat.c b/src/libosmo-mgcp/mgcp_stat.c
new file mode 100644
index 0000000..b84f5f2
--- /dev/null
+++ b/src/libosmo-mgcp/mgcp_stat.c
@@ -0,0 +1,128 @@
+/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
+/* The statistics generator */
+
+/*
+ * (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2012 by On-Waves
+ * (C) 2017 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <osmocom/mgcp/mgcp_stat.h>
+#include <limits.h>
+
+/* Helper function for mgcp_format_stats_rtp() to calculate packet loss */
+void calc_loss(struct mgcp_rtp_state *state,
+ struct mgcp_rtp_end *end, uint32_t *expected,
+ int *loss)
+{
+ *expected = state->stats_cycles + state->stats_max_seq;
+ *expected = *expected - state->stats_base_seq + 1;
+
+ if (!state->stats_initialized) {
+ *expected = 0;
+ *loss = 0;
+ return;
+ }
+
+ /*
+ * Make sure the sign is correct and use the biggest
+ * positive/negative number that fits.
+ */
+ *loss = *expected - end->packets_rx;
+ if (*expected < end->packets_rx) {
+ if (*loss > 0)
+ *loss = INT_MIN;
+ } else {
+ if (*loss < 0)
+ *loss = INT_MAX;
+ }
+}
+
+/* Helper function for mgcp_format_stats_rtp() to calculate jitter */
+uint32_t calc_jitter(struct mgcp_rtp_state *state)
+{
+ if (!state->stats_initialized)
+ return 0;
+ return state->stats_jitter >> 4;
+}
+
+/* Generate statistics for an RTP connection */
+static void mgcp_format_stats_rtp(char *str, size_t str_len,
+ struct mgcp_conn_rtp *conn)
+{
+ uint32_t expected, jitter;
+ int ploss;
+ int nchars;
+
+ calc_loss(&conn->state, &conn->end, &expected, &ploss);
+ jitter = calc_jitter(&conn->state);
+
+ nchars = snprintf(str, str_len,
+ "\r\nP: PS=%u, OS=%u, PR=%u, OR=%u, PL=%d, JI=%u",
+ conn->end.packets_tx, conn->end.octets_tx,
+ conn->end.packets_rx, conn->end.octets_rx,
+ ploss, jitter);
+ if (nchars < 0 || nchars >= str_len)
+ goto truncate;
+
+ str += nchars;
+ str_len -= nchars;
+
+ /* Error Counter */
+ nchars = snprintf(str, str_len,
+ "\r\nX-Osmo-CP: EC TI=%u, TO=%u",
+ conn->state.in_stream.err_ts_counter,
+ conn->state.out_stream.err_ts_counter);
+ if (nchars < 0 || nchars >= str_len)
+ goto truncate;
+
+ str += nchars;
+ str_len -= nchars;
+
+ if (conn->osmux.state == OSMUX_STATE_ENABLED) {
+ snprintf(str, str_len,
+ "\r\nX-Osmux-ST: CR=%u, BR=%u",
+ conn->osmux.stats.chunks, conn->osmux.stats.octets);
+ }
+
+truncate:
+ str[str_len - 1] = '\0';
+}
+
+/*! format statistics into an mgcp parameter string.
+ * \param[out] str resulting string
+ * \param[in] str_len length of the string buffer
+ * \param[in] conn connection to evaluate */
+void mgcp_format_stats(char *str, size_t str_len, struct mgcp_conn *conn)
+{
+ memset(str, 0, str_len);
+ if (!conn)
+ return;
+
+ /* NOTE: At the moment we only support generating statistics for
+ * RTP connections. However, in the future we may also want to
+ * generate statistics for other connection types as well. Lets
+ * keep this option open: */
+ switch (conn->type) {
+ case MGCP_CONN_TYPE_RTP:
+ mgcp_format_stats_rtp(str, str_len, &conn->u.rtp);
+ break;
+ default:
+ break;
+ }
+}
diff --git a/src/libosmo-mgcp/mgcp_vty.c b/src/libosmo-mgcp/mgcp_vty.c
new file mode 100644
index 0000000..7ff1fdd
--- /dev/null
+++ b/src/libosmo-mgcp/mgcp_vty.c
@@ -0,0 +1,1306 @@
+/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
+/* The protocol implementation */
+
+/*
+ * (C) 2009-2014 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2011 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <osmocom/core/talloc.h>
+#include <osmocom/mgcp/mgcp.h>
+#include <osmocom/mgcp/mgcp_common.h>
+#include <osmocom/mgcp/mgcp_internal.h>
+#include <osmocom/mgcp/vty.h>
+#include <osmocom/mgcp/mgcp_conn.h>
+
+#include <string.h>
+
+#define RTCP_OMIT_STR "Drop RTCP packets in both directions\n"
+#define RTP_PATCH_STR "Modify RTP packet header in both directions\n"
+#define RTP_KEEPALIVE_STR "Send dummy UDP packet to net RTP destination\n"
+
+static struct mgcp_config *g_cfg = NULL;
+
+static struct mgcp_trunk_config *find_trunk(struct mgcp_config *cfg, int nr)
+{
+ struct mgcp_trunk_config *trunk;
+
+ if (nr == 0)
+ trunk = &cfg->trunk;
+ else
+ trunk = mgcp_trunk_num(cfg, nr);
+
+ return trunk;
+}
+
+struct cmd_node mgcp_node = {
+ MGCP_NODE,
+ "%s(config-mgcp)# ",
+ 1,
+};
+
+struct cmd_node trunk_node = {
+ TRUNK_NODE,
+ "%s(config-mgcp-trunk)# ",
+ 1,
+};
+
+static int config_write_mgcp(struct vty *vty)
+{
+ vty_out(vty, "mgcp%s", VTY_NEWLINE);
+ if (g_cfg->local_ip)
+ vty_out(vty, " local ip %s%s", g_cfg->local_ip, VTY_NEWLINE);
+ vty_out(vty, " bind ip %s%s", g_cfg->source_addr, VTY_NEWLINE);
+ vty_out(vty, " bind port %u%s", g_cfg->source_port, VTY_NEWLINE);
+ vty_out(vty, " rtp net-range %u %u%s",
+ g_cfg->net_ports.range_start, g_cfg->net_ports.range_end,
+ VTY_NEWLINE);
+ if (g_cfg->net_ports.bind_addr)
+ vty_out(vty, " rtp net-bind-ip %s%s",
+ g_cfg->net_ports.bind_addr, VTY_NEWLINE);
+ if (g_cfg->net_ports.bind_addr_probe)
+ vty_out(vty, " rtp ip-probing%s", VTY_NEWLINE);
+ else
+ vty_out(vty, " no rtp ip-probing%s", VTY_NEWLINE);
+ vty_out(vty, " rtp ip-dscp %d%s", g_cfg->endp_dscp, VTY_NEWLINE);
+ if (g_cfg->trunk.keepalive_interval == MGCP_KEEPALIVE_ONCE)
+ vty_out(vty, " rtp keep-alive once%s", VTY_NEWLINE);
+ else if (g_cfg->trunk.keepalive_interval)
+ vty_out(vty, " rtp keep-alive %d%s",
+ g_cfg->trunk.keepalive_interval, VTY_NEWLINE);
+ else
+ vty_out(vty, " no rtp keep-alive%s", VTY_NEWLINE);
+
+ if (g_cfg->trunk.omit_rtcp)
+ vty_out(vty, " rtcp-omit%s", VTY_NEWLINE);
+ else
+ vty_out(vty, " no rtcp-omit%s", VTY_NEWLINE);
+ if (g_cfg->trunk.force_constant_ssrc
+ || g_cfg->trunk.force_aligned_timing) {
+ vty_out(vty, " %srtp-patch ssrc%s",
+ g_cfg->trunk.force_constant_ssrc ? "" : "no ",
+ VTY_NEWLINE);
+ vty_out(vty, " %srtp-patch timestamp%s",
+ g_cfg->trunk.force_aligned_timing ? "" : "no ",
+ VTY_NEWLINE);
+ } else
+ vty_out(vty, " no rtp-patch%s", VTY_NEWLINE);
+ if (g_cfg->trunk.audio_payload != -1)
+ vty_out(vty, " sdp audio-payload number %d%s",
+ g_cfg->trunk.audio_payload, VTY_NEWLINE);
+ if (g_cfg->trunk.audio_name)
+ vty_out(vty, " sdp audio-payload name %s%s",
+ g_cfg->trunk.audio_name, VTY_NEWLINE);
+ if (g_cfg->trunk.audio_fmtp_extra)
+ vty_out(vty, " sdp audio fmtp-extra %s%s",
+ g_cfg->trunk.audio_fmtp_extra, VTY_NEWLINE);
+ vty_out(vty, " %ssdp audio-payload send-ptime%s",
+ g_cfg->trunk.audio_send_ptime ? "" : "no ", VTY_NEWLINE);
+ vty_out(vty, " %ssdp audio-payload send-name%s",
+ g_cfg->trunk.audio_send_name ? "" : "no ", VTY_NEWLINE);
+ vty_out(vty, " loop %u%s", ! !g_cfg->trunk.audio_loop, VTY_NEWLINE);
+ vty_out(vty, " number endpoints %u%s",
+ g_cfg->trunk.number_endpoints - 1, VTY_NEWLINE);
+ vty_out(vty, " %sallow-transcoding%s",
+ g_cfg->trunk.no_audio_transcoding ? "no " : "", VTY_NEWLINE);
+ if (g_cfg->call_agent_addr)
+ vty_out(vty, " call-agent ip %s%s", g_cfg->call_agent_addr,
+ VTY_NEWLINE);
+ if (g_cfg->force_ptime > 0)
+ vty_out(vty, " rtp force-ptime %d%s", g_cfg->force_ptime,
+ VTY_NEWLINE);
+
+ switch (g_cfg->osmux) {
+ case OSMUX_USAGE_ON:
+ vty_out(vty, " osmux on%s", VTY_NEWLINE);
+ break;
+ case OSMUX_USAGE_ONLY:
+ vty_out(vty, " osmux only%s", VTY_NEWLINE);
+ break;
+ case OSMUX_USAGE_OFF:
+ default:
+ vty_out(vty, " osmux off%s", VTY_NEWLINE);
+ break;
+ }
+ if (g_cfg->osmux) {
+ vty_out(vty, " osmux bind-ip %s%s",
+ g_cfg->osmux_addr, VTY_NEWLINE);
+ vty_out(vty, " osmux batch-factor %d%s",
+ g_cfg->osmux_batch, VTY_NEWLINE);
+ vty_out(vty, " osmux batch-size %u%s",
+ g_cfg->osmux_batch_size, VTY_NEWLINE);
+ vty_out(vty, " osmux port %u%s",
+ g_cfg->osmux_port, VTY_NEWLINE);
+ vty_out(vty, " osmux dummy %s%s",
+ g_cfg->osmux_dummy ? "on" : "off", VTY_NEWLINE);
+ }
+ return CMD_SUCCESS;
+}
+
+static void dump_rtp_end(struct vty *vty, struct mgcp_rtp_state *state,
+ struct mgcp_rtp_end *end)
+{
+ struct mgcp_rtp_codec *codec = &end->codec;
+
+ vty_out(vty,
+ " Timestamp Errs: %d->%d%s"
+ " Dropped Packets: %d%s"
+ " Payload Type: %d Rate: %u Channels: %d %s"
+ " Frame Duration: %u Frame Denominator: %u%s"
+ " FPP: %d Packet Duration: %u%s"
+ " FMTP-Extra: %s Audio-Name: %s Sub-Type: %s%s"
+ " Output-Enabled: %d Force-PTIME: %d%s",
+ state->in_stream.err_ts_counter,
+ state->out_stream.err_ts_counter, VTY_NEWLINE,
+ end->dropped_packets, VTY_NEWLINE,
+ codec->payload_type, codec->rate, codec->channels, VTY_NEWLINE,
+ codec->frame_duration_num, codec->frame_duration_den,
+ VTY_NEWLINE, end->frames_per_packet, end->packet_duration_ms,
+ VTY_NEWLINE, end->fmtp_extra, codec->audio_name,
+ codec->subtype_name, VTY_NEWLINE, end->output_enabled,
+ end->force_output_ptime, VTY_NEWLINE);
+}
+
+static void dump_trunk(struct vty *vty, struct mgcp_trunk_config *cfg,
+ int verbose)
+{
+ int i;
+ struct mgcp_conn *conn;
+
+ vty_out(vty, "%s trunk nr %d with %d endpoints:%s",
+ cfg->trunk_type == MGCP_TRUNK_VIRTUAL ? "Virtual" : "E1",
+ cfg->trunk_nr, cfg->number_endpoints - 1, VTY_NEWLINE);
+
+ if (!cfg->endpoints) {
+ vty_out(vty, "No endpoints allocated yet.%s", VTY_NEWLINE);
+ return;
+ }
+
+ for (i = 1; i < cfg->number_endpoints; ++i) {
+ struct mgcp_endpoint *endp = &cfg->endpoints[i];
+
+ vty_out(vty, "Endpoint 0x%.2x:%s", i, VTY_NEWLINE);
+
+ llist_for_each_entry(conn, &endp->conns, entry) {
+ vty_out(vty, " CONN: %s%s",
+ mgcp_conn_dump(conn), VTY_NEWLINE);
+
+ if (verbose) {
+ /* FIXME: Also add verbosity for other
+ * connection types (E1) as soon as
+ * the implementation is available */
+ if (conn->type == MGCP_CONN_TYPE_RTP) {
+ dump_rtp_end(vty, &conn->u.rtp.state,
+ &conn->u.rtp.end);
+ }
+ }
+ }
+ }
+}
+
+DEFUN(show_mcgp, show_mgcp_cmd,
+ "show mgcp [stats]",
+ SHOW_STR
+ "Display information about the MGCP Media Gateway\n"
+ "Include Statistics\n")
+{
+ struct mgcp_trunk_config *trunk;
+ int show_stats = argc >= 1;
+
+ dump_trunk(vty, &g_cfg->trunk, show_stats);
+
+ llist_for_each_entry(trunk, &g_cfg->trunks, entry)
+ dump_trunk(vty, trunk, show_stats);
+
+ if (g_cfg->osmux)
+ vty_out(vty, "Osmux used CID: %d%s", osmux_used_cid(),
+ VTY_NEWLINE);
+
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp, cfg_mgcp_cmd, "mgcp", "Configure the MGCP")
+{
+ vty->node = MGCP_NODE;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_local_ip,
+ cfg_mgcp_local_ip_cmd,
+ "local ip A.B.C.D",
+ "Local options for the SDP record\n"
+ IP_STR "IPv4 Address to use in SDP record\n")
+{
+ osmo_talloc_replace_string(g_cfg, &g_cfg->local_ip, argv[0]);
+ return CMD_SUCCESS;
+}
+
+#define BIND_STR "Listen/Bind related socket option\n"
+DEFUN(cfg_mgcp_bind_ip,
+ cfg_mgcp_bind_ip_cmd,
+ "bind ip A.B.C.D", BIND_STR IP_STR "IPv4 Address to bind to\n")
+{
+ osmo_talloc_replace_string(g_cfg, &g_cfg->source_addr, argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_bind_port,
+ cfg_mgcp_bind_port_cmd,
+ "bind port <0-65534>",
+ BIND_STR "Port information\n" "UDP port to listen for MGCP messages\n")
+{
+ unsigned int port = atoi(argv[0]);
+ g_cfg->source_port = port;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_bind_early,
+ cfg_mgcp_bind_early_cmd,
+ "bind early (0|1)",
+ BIND_STR
+ "Bind local ports on start up\n" "Bind on demand\n" "Bind on startup\n")
+{
+ vty_out(vty, "bind early is deprecated, remove it from the config.\n");
+ return CMD_WARNING;
+}
+
+static void parse_range(struct mgcp_port_range *range, const char **argv)
+{
+ range->range_start = atoi(argv[0]);
+ range->range_end = atoi(argv[1]);
+ range->last_port = g_cfg->net_ports.range_start;
+}
+
+#define RTP_STR "RTP configuration\n"
+#define UDP_PORT_STR "UDP Port number\n"
+#define NET_START_STR "First UDP port allocated\n"
+#define RANGE_START_STR "Start of the range of ports\n"
+#define RANGE_END_STR "End of the range of ports\n"
+
+DEFUN(cfg_mgcp_rtp_net_range,
+ cfg_mgcp_rtp_net_range_cmd,
+ "rtp net-range <0-65534> <0-65534>",
+ RTP_STR "Range of ports to use for the NET side\n"
+ RANGE_START_STR RANGE_END_STR)
+{
+ parse_range(&g_cfg->net_ports, argv);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_net_bind_ip,
+ cfg_mgcp_rtp_net_bind_ip_cmd,
+ "rtp net-bind-ip A.B.C.D",
+ RTP_STR "Bind endpoints facing the Network\n" "Address to bind to\n")
+{
+ osmo_talloc_replace_string(g_cfg, &g_cfg->net_ports.bind_addr, argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_no_net_bind_ip,
+ cfg_mgcp_rtp_no_net_bind_ip_cmd,
+ "no rtp net-bind-ip",
+ NO_STR RTP_STR "Bind endpoints facing the Network\n"
+ "Address to bind to\n")
+{
+ talloc_free(g_cfg->net_ports.bind_addr);
+ g_cfg->net_ports.bind_addr = NULL;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_net_bind_ip_probing,
+ cfg_mgcp_rtp_net_bind_ip_probing_cmd,
+ "rtp ip-probing",
+ RTP_STR "automatic rtp bind ip selection\n")
+{
+ g_cfg->net_ports.bind_addr_probe = true;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_no_net_bind_ip_probing,
+ cfg_mgcp_rtp_no_net_bind_ip_probing_cmd,
+ "no rtp ip-probing",
+ NO_STR RTP_STR "no automatic rtp bind ip selection\n")
+{
+ g_cfg->net_ports.bind_addr_probe = false;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_ip_dscp,
+ cfg_mgcp_rtp_ip_dscp_cmd,
+ "rtp ip-dscp <0-255>",
+ RTP_STR
+ "Apply IP_TOS to the audio stream (including Osmux)\n" "The DSCP value\n")
+{
+ int dscp = atoi(argv[0]);
+ g_cfg->endp_dscp = dscp;
+ return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_mgcp_rtp_ip_dscp, cfg_mgcp_rtp_ip_tos_cmd,
+ "rtp ip-tos <0-255>",
+ RTP_STR
+ "Apply IP_TOS to the audio stream\n" "The DSCP value\n")
+#define FORCE_PTIME_STR "Force a fixed ptime for packets sent"
+ DEFUN(cfg_mgcp_rtp_force_ptime,
+ cfg_mgcp_rtp_force_ptime_cmd,
+ "rtp force-ptime (10|20|40)",
+ RTP_STR FORCE_PTIME_STR
+ "The required ptime (packet duration) in ms\n" "10 ms\n20 ms\n40 ms\n")
+{
+ g_cfg->force_ptime = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_rtp_force_ptime,
+ cfg_mgcp_no_rtp_force_ptime_cmd,
+ "no rtp force-ptime", NO_STR RTP_STR FORCE_PTIME_STR)
+{
+ g_cfg->force_ptime = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_sdp_fmtp_extra,
+ cfg_mgcp_sdp_fmtp_extra_cmd,
+ "sdp audio fmtp-extra .NAME",
+ "Add extra fmtp for the SDP file\n" "Audio\n" "Fmtp-extra\n"
+ "Extra Information\n")
+{
+ char *txt = argv_concat(argv, argc, 0);
+ if (!txt)
+ return CMD_WARNING;
+
+ osmo_talloc_replace_string(g_cfg, &g_cfg->trunk.audio_fmtp_extra, txt);
+ talloc_free(txt);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_allow_transcoding,
+ cfg_mgcp_allow_transcoding_cmd,
+ "allow-transcoding", "Allow transcoding\n")
+{
+ g_cfg->trunk.no_audio_transcoding = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_allow_transcoding,
+ cfg_mgcp_no_allow_transcoding_cmd,
+ "no allow-transcoding", NO_STR "Allow transcoding\n")
+{
+ g_cfg->trunk.no_audio_transcoding = 1;
+ return CMD_SUCCESS;
+}
+
+#define SDP_STR "SDP File related options\n"
+#define AUDIO_STR "Audio payload options\n"
+DEFUN(cfg_mgcp_sdp_payload_number,
+ cfg_mgcp_sdp_payload_number_cmd,
+ "sdp audio-payload number <0-255>",
+ SDP_STR AUDIO_STR "Number\n" "Payload number\n")
+{
+ unsigned int payload = atoi(argv[0]);
+ g_cfg->trunk.audio_payload = payload;
+ return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_mgcp_sdp_payload_number,
+ cfg_mgcp_sdp_payload_number_cmd_old,
+ "sdp audio payload number <0-255>",
+ SDP_STR AUDIO_STR AUDIO_STR "Number\n" "Payload number\n")
+
+ DEFUN(cfg_mgcp_sdp_payload_name,
+ cfg_mgcp_sdp_payload_name_cmd,
+ "sdp audio-payload name NAME",
+ SDP_STR AUDIO_STR "Name\n" "Payload name\n")
+{
+ osmo_talloc_replace_string(g_cfg, &g_cfg->trunk.audio_name, argv[0]);
+ return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_mgcp_sdp_payload_name, cfg_mgcp_sdp_payload_name_cmd_old,
+ "sdp audio payload name NAME",
+ SDP_STR AUDIO_STR AUDIO_STR "Name\n" "Payload name\n")
+
+ DEFUN(cfg_mgcp_sdp_payload_send_ptime,
+ cfg_mgcp_sdp_payload_send_ptime_cmd,
+ "sdp audio-payload send-ptime",
+ SDP_STR AUDIO_STR "Send SDP ptime (packet duration) attribute\n")
+{
+ g_cfg->trunk.audio_send_ptime = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_sdp_payload_send_ptime,
+ cfg_mgcp_no_sdp_payload_send_ptime_cmd,
+ "no sdp audio-payload send-ptime",
+ NO_STR SDP_STR AUDIO_STR "Send SDP ptime (packet duration) attribute\n")
+{
+ g_cfg->trunk.audio_send_ptime = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_sdp_payload_send_name,
+ cfg_mgcp_sdp_payload_send_name_cmd,
+ "sdp audio-payload send-name",
+ SDP_STR AUDIO_STR "Send SDP rtpmap with the audio name\n")
+{
+ g_cfg->trunk.audio_send_name = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_sdp_payload_send_name,
+ cfg_mgcp_no_sdp_payload_send_name_cmd,
+ "no sdp audio-payload send-name",
+ NO_STR SDP_STR AUDIO_STR "Send SDP rtpmap with the audio name\n")
+{
+ g_cfg->trunk.audio_send_name = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_loop,
+ cfg_mgcp_loop_cmd,
+ "loop (0|1)",
+ "Loop audio for all endpoints on main trunk\n" "Don't Loop\n" "Loop\n")
+{
+ if (g_cfg->osmux) {
+ vty_out(vty, "Cannot use `loop' with `osmux'.%s", VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+ g_cfg->trunk.audio_loop = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_force_realloc,
+ cfg_mgcp_force_realloc_cmd,
+ "force-realloc (0|1)",
+ "Force endpoint reallocation when the endpoint is still seized\n"
+ "Don't force reallocation\n" "force reallocation\n")
+{
+ g_cfg->trunk.force_realloc = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_accept_all,
+ cfg_mgcp_rtp_accept_all_cmd,
+ "rtp-accept-all (0|1)",
+ "Accept all RTP packets, even when the originating IP/Port does not match\n"
+ "enable filter\n" "disable filter\n")
+{
+ g_cfg->trunk.rtp_accept_all = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_number_endp,
+ cfg_mgcp_number_endp_cmd,
+ "number endpoints <0-65534>",
+ "Number options\n" "Endpoints available\n" "Number endpoints\n")
+{
+ /* + 1 as we start counting at one */
+ g_cfg->trunk.number_endpoints = atoi(argv[0]) + 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_omit_rtcp, cfg_mgcp_omit_rtcp_cmd, "rtcp-omit", RTCP_OMIT_STR)
+{
+ g_cfg->trunk.omit_rtcp = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_omit_rtcp,
+ cfg_mgcp_no_omit_rtcp_cmd, "no rtcp-omit", NO_STR RTCP_OMIT_STR)
+{
+ g_cfg->trunk.omit_rtcp = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_patch_rtp_ssrc,
+ cfg_mgcp_patch_rtp_ssrc_cmd,
+ "rtp-patch ssrc", RTP_PATCH_STR "Force a fixed SSRC\n")
+{
+ g_cfg->trunk.force_constant_ssrc = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_patch_rtp_ssrc,
+ cfg_mgcp_no_patch_rtp_ssrc_cmd,
+ "no rtp-patch ssrc", NO_STR RTP_PATCH_STR "Force a fixed SSRC\n")
+{
+ g_cfg->trunk.force_constant_ssrc = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_patch_rtp_ts,
+ cfg_mgcp_patch_rtp_ts_cmd,
+ "rtp-patch timestamp", RTP_PATCH_STR "Adjust RTP timestamp\n")
+{
+ g_cfg->trunk.force_aligned_timing = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_patch_rtp_ts,
+ cfg_mgcp_no_patch_rtp_ts_cmd,
+ "no rtp-patch timestamp", NO_STR RTP_PATCH_STR "Adjust RTP timestamp\n")
+{
+ g_cfg->trunk.force_aligned_timing = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_patch_rtp,
+ cfg_mgcp_no_patch_rtp_cmd, "no rtp-patch", NO_STR RTP_PATCH_STR)
+{
+ g_cfg->trunk.force_constant_ssrc = 0;
+ g_cfg->trunk.force_aligned_timing = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_keepalive,
+ cfg_mgcp_rtp_keepalive_cmd,
+ "rtp keep-alive <1-120>",
+ RTP_STR RTP_KEEPALIVE_STR "Keep alive interval in secs\n")
+{
+ mgcp_trunk_set_keepalive(&g_cfg->trunk, atoi(argv[0]));
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_keepalive_once,
+ cfg_mgcp_rtp_keepalive_once_cmd,
+ "rtp keep-alive once",
+ RTP_STR RTP_KEEPALIVE_STR "Send dummy packet only once after CRCX/MDCX\n")
+{
+ mgcp_trunk_set_keepalive(&g_cfg->trunk, MGCP_KEEPALIVE_ONCE);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_rtp_keepalive,
+ cfg_mgcp_no_rtp_keepalive_cmd,
+ "no rtp keep-alive", NO_STR RTP_STR RTP_KEEPALIVE_STR)
+{
+ mgcp_trunk_set_keepalive(&g_cfg->trunk, MGCP_KEEPALIVE_NEVER);
+ return CMD_SUCCESS;
+}
+
+#define CALL_AGENT_STR "Callagent information\n"
+DEFUN(cfg_mgcp_agent_addr,
+ cfg_mgcp_agent_addr_cmd,
+ "call-agent ip A.B.C.D",
+ CALL_AGENT_STR IP_STR "IPv4 Address of the callagent\n")
+{
+ osmo_talloc_replace_string(g_cfg, &g_cfg->call_agent_addr, argv[0]);
+ return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_mgcp_agent_addr, cfg_mgcp_agent_addr_cmd_old,
+ "call agent ip A.B.C.D",
+ CALL_AGENT_STR CALL_AGENT_STR IP_STR
+ "IPv4 Address of the callagent\n")
+
+ DEFUN(cfg_mgcp_trunk, cfg_mgcp_trunk_cmd,
+ "trunk <1-64>", "Configure a SS7 trunk\n" "Trunk Nr\n")
+{
+ struct mgcp_trunk_config *trunk;
+ int index = atoi(argv[0]);
+
+ trunk = mgcp_trunk_num(g_cfg, index);
+ if (!trunk)
+ trunk = mgcp_trunk_alloc(g_cfg, index);
+
+ if (!trunk) {
+ vty_out(vty, "%%Unable to allocate trunk %u.%s",
+ index, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ vty->node = TRUNK_NODE;
+ vty->index = trunk;
+ return CMD_SUCCESS;
+}
+
+static int config_write_trunk(struct vty *vty)
+{
+ struct mgcp_trunk_config *trunk;
+
+ llist_for_each_entry(trunk, &g_cfg->trunks, entry) {
+ vty_out(vty, " trunk %d%s", trunk->trunk_nr, VTY_NEWLINE);
+ vty_out(vty, " sdp audio-payload number %d%s",
+ trunk->audio_payload, VTY_NEWLINE);
+ vty_out(vty, " sdp audio-payload name %s%s",
+ trunk->audio_name, VTY_NEWLINE);
+ vty_out(vty, " %ssdp audio-payload send-ptime%s",
+ trunk->audio_send_ptime ? "" : "no ", VTY_NEWLINE);
+ vty_out(vty, " %ssdp audio-payload send-name%s",
+ trunk->audio_send_name ? "" : "no ", VTY_NEWLINE);
+
+ if (trunk->keepalive_interval == MGCP_KEEPALIVE_ONCE)
+ vty_out(vty, " rtp keep-alive once%s", VTY_NEWLINE);
+ else if (trunk->keepalive_interval)
+ vty_out(vty, " rtp keep-alive %d%s",
+ trunk->keepalive_interval, VTY_NEWLINE);
+ else
+ vty_out(vty, " no rtp keep-alive%s", VTY_NEWLINE);
+ vty_out(vty, " loop %d%s", trunk->audio_loop, VTY_NEWLINE);
+ vty_out(vty, " force-realloc %d%s",
+ trunk->force_realloc, VTY_NEWLINE);
+ vty_out(vty, " rtp-accept-all %d%s",
+ trunk->rtp_accept_all, VTY_NEWLINE);
+ if (trunk->omit_rtcp)
+ vty_out(vty, " rtcp-omit%s", VTY_NEWLINE);
+ else
+ vty_out(vty, " no rtcp-omit%s", VTY_NEWLINE);
+ if (trunk->force_constant_ssrc || trunk->force_aligned_timing) {
+ vty_out(vty, " %srtp-patch ssrc%s",
+ trunk->force_constant_ssrc ? "" : "no ",
+ VTY_NEWLINE);
+ vty_out(vty, " %srtp-patch timestamp%s",
+ trunk->force_aligned_timing ? "" : "no ",
+ VTY_NEWLINE);
+ } else
+ vty_out(vty, " no rtp-patch%s", VTY_NEWLINE);
+ if (trunk->audio_fmtp_extra)
+ vty_out(vty, " sdp audio fmtp-extra %s%s",
+ trunk->audio_fmtp_extra, VTY_NEWLINE);
+ vty_out(vty, " %sallow-transcoding%s",
+ trunk->no_audio_transcoding ? "no " : "", VTY_NEWLINE);
+ }
+
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_sdp_fmtp_extra,
+ cfg_trunk_sdp_fmtp_extra_cmd,
+ "sdp audio fmtp-extra .NAME",
+ "Add extra fmtp for the SDP file\n" "Audio\n" "Fmtp-extra\n"
+ "Extra Information\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ char *txt = argv_concat(argv, argc, 0);
+ if (!txt)
+ return CMD_WARNING;
+
+ osmo_talloc_replace_string(g_cfg, &trunk->audio_fmtp_extra, txt);
+ talloc_free(txt);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_payload_number,
+ cfg_trunk_payload_number_cmd,
+ "sdp audio-payload number <0-255>",
+ SDP_STR AUDIO_STR "Number\n" "Payload Number\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ unsigned int payload = atoi(argv[0]);
+
+ trunk->audio_payload = payload;
+ return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_trunk_payload_number, cfg_trunk_payload_number_cmd_old,
+ "sdp audio payload number <0-255>",
+ SDP_STR AUDIO_STR AUDIO_STR "Number\n" "Payload Number\n")
+
+ DEFUN(cfg_trunk_payload_name,
+ cfg_trunk_payload_name_cmd,
+ "sdp audio-payload name NAME",
+ SDP_STR AUDIO_STR "Payload\n" "Payload Name\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+
+ osmo_talloc_replace_string(g_cfg, &trunk->audio_name, argv[0]);
+ return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_trunk_payload_name, cfg_trunk_payload_name_cmd_old,
+ "sdp audio payload name NAME",
+ SDP_STR AUDIO_STR AUDIO_STR "Payload\n" "Payload Name\n")
+
+ DEFUN(cfg_trunk_loop,
+ cfg_trunk_loop_cmd,
+ "loop (0|1)",
+ "Loop audio for all endpoints on this trunk\n" "Don't Loop\n" "Loop\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+
+ if (g_cfg->osmux) {
+ vty_out(vty, "Cannot use `loop' with `osmux'.%s", VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+ trunk->audio_loop = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_sdp_payload_send_ptime,
+ cfg_trunk_sdp_payload_send_ptime_cmd,
+ "sdp audio-payload send-ptime",
+ SDP_STR AUDIO_STR "Send SDP ptime (packet duration) attribute\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->audio_send_ptime = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_sdp_payload_send_ptime,
+ cfg_trunk_no_sdp_payload_send_ptime_cmd,
+ "no sdp audio-payload send-ptime",
+ NO_STR SDP_STR AUDIO_STR "Send SDP ptime (packet duration) attribute\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->audio_send_ptime = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_sdp_payload_send_name,
+ cfg_trunk_sdp_payload_send_name_cmd,
+ "sdp audio-payload send-name",
+ SDP_STR AUDIO_STR "Send SDP rtpmap with the audio name\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->audio_send_name = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_sdp_payload_send_name,
+ cfg_trunk_no_sdp_payload_send_name_cmd,
+ "no sdp audio-payload send-name",
+ NO_STR SDP_STR AUDIO_STR "Send SDP rtpmap with the audio name\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->audio_send_name = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_omit_rtcp, cfg_trunk_omit_rtcp_cmd, "rtcp-omit", RTCP_OMIT_STR)
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->omit_rtcp = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_omit_rtcp,
+ cfg_trunk_no_omit_rtcp_cmd, "no rtcp-omit", NO_STR RTCP_OMIT_STR)
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->omit_rtcp = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_patch_rtp_ssrc,
+ cfg_trunk_patch_rtp_ssrc_cmd,
+ "rtp-patch ssrc", RTP_PATCH_STR "Force a fixed SSRC\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->force_constant_ssrc = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_patch_rtp_ssrc,
+ cfg_trunk_no_patch_rtp_ssrc_cmd,
+ "no rtp-patch ssrc", NO_STR RTP_PATCH_STR "Force a fixed SSRC\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->force_constant_ssrc = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_patch_rtp_ts,
+ cfg_trunk_patch_rtp_ts_cmd,
+ "rtp-patch timestamp", RTP_PATCH_STR "Adjust RTP timestamp\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->force_aligned_timing = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_patch_rtp_ts,
+ cfg_trunk_no_patch_rtp_ts_cmd,
+ "no rtp-patch timestamp", NO_STR RTP_PATCH_STR "Adjust RTP timestamp\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->force_aligned_timing = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_patch_rtp,
+ cfg_trunk_no_patch_rtp_cmd, "no rtp-patch", NO_STR RTP_PATCH_STR)
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->force_constant_ssrc = 0;
+ trunk->force_aligned_timing = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_rtp_keepalive,
+ cfg_trunk_rtp_keepalive_cmd,
+ "rtp keep-alive <1-120>",
+ RTP_STR RTP_KEEPALIVE_STR "Keep-alive interval in secs\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ mgcp_trunk_set_keepalive(trunk, atoi(argv[0]));
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_rtp_keepalive_once,
+ cfg_trunk_rtp_keepalive_once_cmd,
+ "rtp keep-alive once",
+ RTP_STR RTP_KEEPALIVE_STR "Send dummy packet only once after CRCX/MDCX\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ mgcp_trunk_set_keepalive(trunk, MGCP_KEEPALIVE_ONCE);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_rtp_keepalive,
+ cfg_trunk_no_rtp_keepalive_cmd,
+ "no rtp keep-alive", NO_STR RTP_STR RTP_KEEPALIVE_STR)
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ mgcp_trunk_set_keepalive(trunk, 0);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_allow_transcoding,
+ cfg_trunk_allow_transcoding_cmd,
+ "allow-transcoding", "Allow transcoding\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->no_audio_transcoding = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_allow_transcoding,
+ cfg_trunk_no_allow_transcoding_cmd,
+ "no allow-transcoding", NO_STR "Allow transcoding\n")
+{
+ struct mgcp_trunk_config *trunk = vty->index;
+ trunk->no_audio_transcoding = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(loop_conn,
+ loop_conn_cmd,
+ "loop-endpoint <0-64> NAME (0|1)",
+ "Loop a given endpoint\n" "Trunk number\n"
+ "The name in hex of the endpoint\n" "Disable the loop\n"
+ "Enable the loop\n")
+{
+ struct mgcp_trunk_config *trunk;
+ struct mgcp_endpoint *endp;
+ struct mgcp_conn *conn;
+
+ trunk = find_trunk(g_cfg, atoi(argv[0]));
+ if (!trunk) {
+ vty_out(vty, "%%Trunk %d not found in the config.%s",
+ atoi(argv[0]), VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ if (!trunk->endpoints) {
+ vty_out(vty, "%%Trunk %d has no endpoints allocated.%s",
+ trunk->trunk_nr, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ int endp_no = strtoul(argv[1], NULL, 16);
+ if (endp_no < 1 || endp_no >= trunk->number_endpoints) {
+ vty_out(vty, "Loopback number %s/%d is invalid.%s",
+ argv[1], endp_no, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ endp = &trunk->endpoints[endp_no];
+ int loop = atoi(argv[2]);
+ llist_for_each_entry(conn, &endp->conns, entry) {
+ if (conn->type == MGCP_CONN_TYPE_RTP)
+ /* Handle it like a MDCX, switch on SSRC patching if enabled */
+ mgcp_rtp_end_config(endp, 1, &conn->u.rtp.end);
+ else {
+ /* FIXME: Introduce support for other connection (E1)
+ * types when implementation is available */
+ vty_out(vty, "%%Can't enable SSRC patching,"
+ "connection %s is not an RTP connection.%s",
+ mgcp_conn_dump(conn), VTY_NEWLINE);
+ }
+
+ if (loop)
+ conn->mode = MGCP_CONN_LOOPBACK;
+ else
+ conn->mode = conn->mode_orig;
+ }
+
+ return CMD_SUCCESS;
+}
+
+DEFUN(tap_rtp,
+ tap_rtp_cmd,
+ "tap-rtp <0-64> ENDPOINT CONN (in|out) A.B.C.D <0-65534>",
+ "Forward data on endpoint to a different system\n" "Trunk number\n"
+ "The endpoint in hex\n"
+ "The connection id in hex\n"
+ "Forward incoming data\n"
+ "Forward leaving data\n"
+ "destination IP of the data\n" "destination port\n")
+{
+ struct mgcp_rtp_tap *tap;
+ struct mgcp_trunk_config *trunk;
+ struct mgcp_endpoint *endp;
+ struct mgcp_conn_rtp *conn;
+ uint32_t conn_id;
+
+ trunk = find_trunk(g_cfg, atoi(argv[0]));
+ if (!trunk) {
+ vty_out(vty, "%%Trunk %d not found in the config.%s",
+ atoi(argv[0]), VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ if (!trunk->endpoints) {
+ vty_out(vty, "%%Trunk %d has no endpoints allocated.%s",
+ trunk->trunk_nr, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ int endp_no = strtoul(argv[1], NULL, 16);
+ if (endp_no < 1 || endp_no >= trunk->number_endpoints) {
+ vty_out(vty, "Endpoint number %s/%d is invalid.%s",
+ argv[1], endp_no, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ endp = &trunk->endpoints[endp_no];
+
+ conn_id = strtoul(argv[2], NULL, 10);
+ conn = mgcp_conn_get_rtp(endp, conn_id);
+ if (!conn) {
+ vty_out(vty, "Conn ID %s/%d is invalid.%s",
+ argv[2], conn_id, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ if (strcmp(argv[3], "in") == 0)
+ tap = &conn->tap_in;
+ else if (strcmp(argv[3], "out") == 0)
+ tap = &conn->tap_out;
+ else {
+ vty_out(vty, "Unknown mode... tricked vty?%s", VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ memset(&tap->forward, 0, sizeof(tap->forward));
+ inet_aton(argv[4], &tap->forward.sin_addr);
+ tap->forward.sin_port = htons(atoi(argv[5]));
+ tap->enabled = 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(free_endp, free_endp_cmd,
+ "free-endpoint <0-64> NUMBER",
+ "Free the given endpoint\n" "Trunk number\n" "Endpoint number in hex.\n")
+{
+ struct mgcp_trunk_config *trunk;
+ struct mgcp_endpoint *endp;
+
+ trunk = find_trunk(g_cfg, atoi(argv[0]));
+ if (!trunk) {
+ vty_out(vty, "%%Trunk %d not found in the config.%s",
+ atoi(argv[0]), VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ if (!trunk->endpoints) {
+ vty_out(vty, "%%Trunk %d has no endpoints allocated.%s",
+ trunk->trunk_nr, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ int endp_no = strtoul(argv[1], NULL, 16);
+ if (endp_no < 1 || endp_no >= trunk->number_endpoints) {
+ vty_out(vty, "Endpoint number %s/%d is invalid.%s",
+ argv[1], endp_no, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ endp = &trunk->endpoints[endp_no];
+ mgcp_release_endp(endp);
+ return CMD_SUCCESS;
+}
+
+DEFUN(reset_endp, reset_endp_cmd,
+ "reset-endpoint <0-64> NUMBER",
+ "Reset the given endpoint\n" "Trunk number\n" "Endpoint number in hex.\n")
+{
+ struct mgcp_trunk_config *trunk;
+ struct mgcp_endpoint *endp;
+ int endp_no, rc;
+
+ trunk = find_trunk(g_cfg, atoi(argv[0]));
+ if (!trunk) {
+ vty_out(vty, "%%Trunk %d not found in the config.%s",
+ atoi(argv[0]), VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ if (!trunk->endpoints) {
+ vty_out(vty, "%%Trunk %d has no endpoints allocated.%s",
+ trunk->trunk_nr, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ endp_no = strtoul(argv[1], NULL, 16);
+ if (endp_no < 1 || endp_no >= trunk->number_endpoints) {
+ vty_out(vty, "Endpoint number %s/%d is invalid.%s",
+ argv[1], endp_no, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ endp = &trunk->endpoints[endp_no];
+ rc = mgcp_send_reset_ep(endp, ENDPOINT_NUMBER(endp));
+ if (rc < 0) {
+ vty_out(vty, "Error %d sending reset.%s", rc, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+ return CMD_SUCCESS;
+}
+
+DEFUN(reset_all_endp, reset_all_endp_cmd,
+ "reset-all-endpoints", "Reset all endpoints\n")
+{
+ int rc;
+
+ rc = mgcp_send_reset_all(g_cfg);
+ if (rc < 0) {
+ vty_out(vty, "Error %d during endpoint reset.%s",
+ rc, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+ return CMD_SUCCESS;
+}
+
+#define OSMUX_STR "RTP multiplexing\n"
+DEFUN(cfg_mgcp_osmux,
+ cfg_mgcp_osmux_cmd,
+ "osmux (on|off|only)",
+ OSMUX_STR "Enable OSMUX\n" "Disable OSMUX\n" "Only use OSMUX\n")
+{
+ if (strcmp(argv[0], "off") == 0) {
+ g_cfg->osmux = OSMUX_USAGE_OFF;
+ return CMD_SUCCESS;
+ }
+
+ /* Since OSMUX support is not finished, we do not
+ * allow to turn it on yet. */
+ vty_out(vty, "OSMUX currently unavailable in this software version.%s", VTY_NEWLINE);
+ return CMD_WARNING;
+
+ if (strcmp(argv[0], "on") == 0)
+ g_cfg->osmux = OSMUX_USAGE_ON;
+ else if (strcmp(argv[0], "only") == 0)
+ g_cfg->osmux = OSMUX_USAGE_ONLY;
+
+ if (g_cfg->trunk.audio_loop) {
+ vty_out(vty, "Cannot use `loop' with `osmux'.%s", VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_osmux_ip,
+ cfg_mgcp_osmux_ip_cmd,
+ "osmux bind-ip A.B.C.D", OSMUX_STR IP_STR "IPv4 Address to bind to\n")
+{
+ osmo_talloc_replace_string(g_cfg, &g_cfg->osmux_addr, argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_osmux_batch_factor,
+ cfg_mgcp_osmux_batch_factor_cmd,
+ "osmux batch-factor <1-8>",
+ OSMUX_STR "Batching factor\n" "Number of messages in the batch\n")
+{
+ g_cfg->osmux_batch = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_osmux_batch_size,
+ cfg_mgcp_osmux_batch_size_cmd,
+ "osmux batch-size <1-65535>",
+ OSMUX_STR "batch size\n" "Batch size in bytes\n")
+{
+ g_cfg->osmux_batch_size = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_osmux_port,
+ cfg_mgcp_osmux_port_cmd,
+ "osmux port <1-65535>", OSMUX_STR "port\n" "UDP port\n")
+{
+ g_cfg->osmux_port = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_osmux_dummy,
+ cfg_mgcp_osmux_dummy_cmd,
+ "osmux dummy (on|off)",
+ OSMUX_STR "Dummy padding\n" "Enable dummy padding\n"
+ "Disable dummy padding\n")
+{
+ if (strcmp(argv[0], "on") == 0)
+ g_cfg->osmux_dummy = 1;
+ else if (strcmp(argv[0], "off") == 0)
+ g_cfg->osmux_dummy = 0;
+
+ return CMD_SUCCESS;
+}
+
+int mgcp_vty_init(void)
+{
+ install_element_ve(&show_mgcp_cmd);
+ install_element(ENABLE_NODE, &loop_conn_cmd);
+ install_element(ENABLE_NODE, &tap_rtp_cmd);
+ install_element(ENABLE_NODE, &free_endp_cmd);
+ install_element(ENABLE_NODE, &reset_endp_cmd);
+ install_element(ENABLE_NODE, &reset_all_endp_cmd);
+
+ install_element(CONFIG_NODE, &cfg_mgcp_cmd);
+ install_node(&mgcp_node, config_write_mgcp);
+
+ install_element(MGCP_NODE, &cfg_mgcp_local_ip_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_bind_ip_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_bind_port_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_bind_early_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_net_range_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_net_bind_ip_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_no_net_bind_ip_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_net_bind_ip_probing_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_no_net_bind_ip_probing_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_ip_dscp_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_ip_tos_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_force_ptime_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_no_rtp_force_ptime_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_keepalive_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_keepalive_once_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_no_rtp_keepalive_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_agent_addr_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_agent_addr_cmd_old);
+ install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_number_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_name_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_number_cmd_old);
+ install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_name_cmd_old);
+ install_element(MGCP_NODE, &cfg_mgcp_loop_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_force_realloc_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_accept_all_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_number_endp_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_omit_rtcp_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_no_omit_rtcp_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_patch_rtp_ssrc_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_no_patch_rtp_ssrc_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_patch_rtp_ts_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_no_patch_rtp_ts_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_no_patch_rtp_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_sdp_fmtp_extra_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_send_ptime_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_no_sdp_payload_send_ptime_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_send_name_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_no_sdp_payload_send_name_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_osmux_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_osmux_ip_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_osmux_batch_factor_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_osmux_batch_size_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_osmux_port_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_osmux_dummy_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_allow_transcoding_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_no_allow_transcoding_cmd);
+
+ install_element(MGCP_NODE, &cfg_mgcp_trunk_cmd);
+ install_node(&trunk_node, config_write_trunk);
+ install_element(TRUNK_NODE, &cfg_trunk_rtp_keepalive_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_rtp_keepalive_once_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_no_rtp_keepalive_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_payload_number_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_payload_name_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_payload_number_cmd_old);
+ install_element(TRUNK_NODE, &cfg_trunk_payload_name_cmd_old);
+ install_element(TRUNK_NODE, &cfg_trunk_loop_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_omit_rtcp_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_no_omit_rtcp_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_patch_rtp_ssrc_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_no_patch_rtp_ssrc_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_patch_rtp_ts_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_no_patch_rtp_ts_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_no_patch_rtp_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_sdp_fmtp_extra_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_sdp_payload_send_ptime_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_no_sdp_payload_send_ptime_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_sdp_payload_send_name_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_no_sdp_payload_send_name_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_allow_transcoding_cmd);
+ install_element(TRUNK_NODE, &cfg_trunk_no_allow_transcoding_cmd);
+
+ return 0;
+}
+
+static int allocate_trunk(struct mgcp_trunk_config *trunk)
+{
+ if (mgcp_endpoints_allocate(trunk) != 0) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Failed to allocate %d endpoints on trunk %d.\n",
+ trunk->number_endpoints, trunk->trunk_nr);
+ return -1;
+ }
+
+ return 0;
+}
+
+int mgcp_parse_config(const char *config_file, struct mgcp_config *cfg,
+ enum mgcp_role role)
+{
+ int rc;
+ struct mgcp_trunk_config *trunk;
+
+ cfg->osmux_port = OSMUX_PORT;
+ cfg->osmux_batch = 4;
+ cfg->osmux_batch_size = OSMUX_BATCH_DEFAULT_MAX;
+
+ g_cfg = cfg;
+ rc = vty_read_config_file(config_file, NULL);
+ if (rc < 0) {
+ fprintf(stderr, "Failed to parse the config file: '%s'\n",
+ config_file);
+ return rc;
+ }
+
+ if (!g_cfg->source_addr) {
+ fprintf(stderr, "You need to specify a bind address.\n");
+ return -1;
+ }
+
+ if (allocate_trunk(&g_cfg->trunk) != 0) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Failed to initialize the virtual trunk.\n");
+ return -1;
+ }
+
+ llist_for_each_entry(trunk, &g_cfg->trunks, entry) {
+ if (allocate_trunk(trunk) != 0) {
+ LOGP(DLMGCP, LOGL_ERROR,
+ "Failed to initialize E1 trunk %d.\n",
+ trunk->trunk_nr);
+ return -1;
+ }
+ }
+ cfg->role = role;
+
+ return 0;
+}
diff --git a/src/osmo-bsc_mgcp/Makefile.am b/src/osmo-bsc_mgcp/Makefile.am
new file mode 100644
index 0000000..4529a33
--- /dev/null
+++ b/src/osmo-bsc_mgcp/Makefile.am
@@ -0,0 +1,29 @@
+AM_CPPFLAGS = \
+ $(all_includes) \
+ -I$(top_srcdir)/include \
+ -I$(top_builddir) \
+ $(NULL)
+
+AM_CFLAGS = \
+ -Wall \
+ $(LIBOSMOCORE_CFLAGS) \
+ $(LIBOSMOVTY_CFLAGS) \
+ $(LIBBCG729_CFLAGS) \
+ $(COVERAGE_CFLAGS) \
+ $(NULL)
+
+bin_PROGRAMS = \
+ osmo-bsc_mgcp \
+ $(NULL)
+
+osmo_bsc_mgcp_SOURCES = \
+ mgcp_main.c \
+ $(NULL)
+
+osmo_bsc_mgcp_LDADD = \
+ $(top_builddir)/src/libosmo-legacy-mgcp/libosmo-legacy-mgcp.la \
+ $(LIBOSMOCORE_LIBS) \
+ $(LIBOSMOVTY_LIBS) \
+ $(LIBBCG729_LIBS) \
+ $(LIBRARY_GSM) \
+ $(NULL)
diff --git a/src/osmo-bsc_mgcp/mgcp_main.c b/src/osmo-bsc_mgcp/mgcp_main.c
new file mode 100644
index 0000000..48241a6
--- /dev/null
+++ b/src/osmo-bsc_mgcp/mgcp_main.c
@@ -0,0 +1,351 @@
+/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
+/* The main method to drive it as a standalone process */
+
+/*
+ * (C) 2009-2011 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2011 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <limits.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include <sys/socket.h>
+
+#include <osmocom/legacy_mgcp/mgcp.h>
+#include <osmocom/legacy_mgcp/mgcp_internal.h>
+#include <osmocom/legacy_mgcp/vty.h>
+
+#include <osmocom/core/application.h>
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/talloc.h>
+#include <osmocom/core/select.h>
+#include <osmocom/core/stats.h>
+#include <osmocom/core/rate_ctr.h>
+#include <osmocom/core/logging.h>
+
+#include <osmocom/vty/telnet_interface.h>
+#include <osmocom/vty/logging.h>
+#include <osmocom/vty/ports.h>
+#include <osmocom/vty/command.h>
+#include <osmocom/vty/stats.h>
+
+#include "../../bscconfig.h"
+
+#ifdef BUILD_MGCP_TRANSCODING
+#include <osmocom/legacy_mgcp/mgcp_transcode.h>
+#endif
+
+#define _GNU_SOURCE
+#include <getopt.h>
+
+#warning "Make use of the rtp proxy code"
+
+static struct mgcp_config *cfg;
+static struct mgcp_trunk_config *reset_trunk;
+static int reset_endpoints = 0;
+static int daemonize = 0;
+
+const char *openbsc_copyright =
+ "Copyright (C) 2009-2010 Holger Freyther and On-Waves\r\n"
+ "Contributions by Daniel Willmann, Jan Lübbe, Stefan Schmidt\r\n"
+ "Dieter Spaar, Andreas Eversberg, Harald Welte\r\n\r\n"
+ "License AGPLv3+: GNU AGPL version 3 or later <http://gnu.org/licenses/agpl-3.0.html>\r\n"
+ "This is free software: you are free to change and redistribute it.\r\n"
+ "There is NO WARRANTY, to the extent permitted by law.\r\n";
+
+static char *config_file = "mgcp.cfg";
+
+/* used by msgb and mgcp */
+void *tall_bsc_ctx = NULL;
+
+static void print_help()
+{
+ printf("Some useful help...\n");
+ printf(" -h --help is printing this text.\n");
+ printf(" -c --config-file filename The config file to use.\n");
+ printf(" -s --disable-color\n");
+ printf(" -D --daemonize Fork the process into a background daemon\n");
+ printf(" -V --version Print the version number\n");
+}
+
+static void handle_options(int argc, char **argv)
+{
+ while (1) {
+ int option_index = 0, c;
+ static struct option long_options[] = {
+ {"help", 0, 0, 'h'},
+ {"config-file", 1, 0, 'c'},
+ {"daemonize", 0, 0, 'D'},
+ {"version", 0, 0, 'V'},
+ {"disable-color", 0, 0, 's'},
+ {0, 0, 0, 0},
+ };
+
+ c = getopt_long(argc, argv, "hc:VD", long_options, &option_index);
+
+ if (c == -1)
+ break;
+
+ switch(c) {
+ case 'h':
+ print_help();
+ exit(0);
+ break;
+ case 'c':
+ config_file = talloc_strdup(tall_bsc_ctx, optarg);
+ break;
+ case 's':
+ log_set_use_color(osmo_stderr_target, 0);
+ break;
+ case 'V':
+ print_version(1);
+ exit(0);
+ break;
+ case 'D':
+ daemonize = 1;
+ break;
+ default:
+ /* ignore */
+ break;
+ };
+ }
+}
+
+/* simply remember this */
+static int mgcp_rsip_cb(struct mgcp_trunk_config *tcfg)
+{
+ reset_endpoints = 1;
+ reset_trunk = tcfg;
+
+ return 0;
+}
+
+static int read_call_agent(struct osmo_fd *fd, unsigned int what)
+{
+ struct sockaddr_in addr;
+ socklen_t slen = sizeof(addr);
+ struct msgb *msg;
+ struct msgb *resp;
+ int i;
+
+ msg = (struct msgb *) fd->data;
+
+ /* read one less so we can use it as a \0 */
+ int rc = recvfrom(cfg->gw_fd.bfd.fd, msg->data, msg->data_len - 1, 0,
+ (struct sockaddr *) &addr, &slen);
+ if (rc < 0) {
+ perror("Gateway failed to read");
+ return -1;
+ } else if (slen > sizeof(addr)) {
+ fprintf(stderr, "Gateway received message from outerspace: %zu %zu\n",
+ (size_t) slen, sizeof(addr));
+ return -1;
+ }
+
+ /* handle message now */
+ msg->l2h = msgb_put(msg, rc);
+ resp = mgcp_handle_message(cfg, msg);
+ msgb_reset(msg);
+
+ if (resp) {
+ sendto(cfg->gw_fd.bfd.fd, resp->l2h, msgb_l2len(resp), 0, (struct sockaddr *) &addr, sizeof(addr));
+ msgb_free(resp);
+ }
+
+ if (reset_endpoints) {
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "Asked to reset endpoints: %d/%d\n",
+ reset_trunk->trunk_nr, reset_trunk->trunk_type);
+ reset_endpoints = 0;
+
+ /* is checking in_addr.s_addr == INADDR_LOOPBACK making it more secure? */
+ for (i = 1; i < reset_trunk->number_endpoints; ++i)
+ mgcp_release_endp(&reset_trunk->endpoints[i]);
+ }
+
+ return 0;
+}
+
+int mgcp_vty_is_config_node(struct vty *vty, int node)
+{
+ switch (node) {
+ case CONFIG_NODE:
+ return 0;
+
+ default:
+ return 1;
+ }
+}
+
+int mgcp_vty_go_parent(struct vty *vty)
+{
+ switch (vty->node) {
+ case TRUNK_NODE:
+ vty->node = MGCP_NODE;
+ vty->index = NULL;
+ break;
+ case MGCP_NODE:
+ default:
+ if (mgcp_vty_is_config_node(vty, vty->node))
+ vty->node = CONFIG_NODE;
+ else
+ vty->node = ENABLE_NODE;
+
+ vty->index = NULL;
+ }
+
+ return vty->node;
+}
+
+
+static struct vty_app_info vty_info = {
+ .name = "OpenBSC MGCP",
+ .version = PACKAGE_VERSION,
+ .go_parent_cb = mgcp_vty_go_parent,
+ .is_config_node = mgcp_vty_is_config_node,
+};
+
+static const struct log_info_cat log_categories[] = {
+ /* DLMGCP is provided by the MGCP library */
+};
+
+const struct log_info log_info = {
+ .cat = log_categories,
+ .num_cat = ARRAY_SIZE(log_categories),
+};
+
+int main(int argc, char **argv)
+{
+ struct sockaddr_in addr;
+ int on = 1, rc;
+
+ tall_bsc_ctx = talloc_named_const(NULL, 1, "mgcp-callagent");
+ msgb_talloc_ctx_init(tall_bsc_ctx, 0);
+
+ osmo_init_ignore_signals();
+ osmo_init_logging(&log_info);
+
+ cfg = mgcp_config_alloc();
+ if (!cfg)
+ return -1;
+
+#ifdef BUILD_MGCP_TRANSCODING
+ cfg->setup_rtp_processing_cb = &mgcp_transcoding_setup;
+ cfg->rtp_processing_cb = &mgcp_transcoding_process_rtp;
+ cfg->get_net_downlink_format_cb = &mgcp_transcoding_net_downlink_format;
+#endif
+
+ cfg->trunk.force_realloc = 1;
+
+ vty_info.copyright = openbsc_copyright;
+ vty_init(&vty_info);
+ logging_vty_add_cmds(NULL);
+ osmo_stats_vty_add_cmds(&log_info);
+ mgcp_vty_init();
+
+ handle_options(argc, argv);
+
+ rate_ctr_init(tall_bsc_ctx);
+ osmo_stats_init(tall_bsc_ctx);
+
+ rc = mgcp_parse_config(config_file, cfg, MGCP_BSC);
+ if (rc < 0)
+ return rc;
+
+ /* start telnet after reading config for vty_get_bind_addr() */
+ rc = telnet_init_dynif(tall_bsc_ctx, NULL,
+ vty_get_bind_addr(), OSMO_VTY_PORT_BSC_MGCP);
+ if (rc < 0)
+ return rc;
+
+ /* set some callbacks */
+ cfg->reset_cb = mgcp_rsip_cb;
+
+ /* we need to bind a socket */
+ if (rc == 0) {
+ cfg->gw_fd.bfd.when = BSC_FD_READ;
+ cfg->gw_fd.bfd.cb = read_call_agent;
+ cfg->gw_fd.bfd.fd = socket(AF_INET, SOCK_DGRAM, 0);
+ if (cfg->gw_fd.bfd.fd < 0) {
+ perror("Gateway failed to listen");
+ return -1;
+ }
+
+ setsockopt(cfg->gw_fd.bfd.fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+
+ memset(&addr, 0, sizeof(addr));
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons(cfg->source_port);
+ inet_aton(cfg->source_addr, &addr.sin_addr);
+
+ if (bind(cfg->gw_fd.bfd.fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ perror("Gateway failed to bind");
+ return -1;
+ }
+
+ cfg->gw_fd.bfd.data = msgb_alloc(4096, "mgcp-msg");
+ if (!cfg->gw_fd.bfd.data) {
+ fprintf(stderr, "Gateway memory error.\n");
+ return -1;
+ }
+
+ if (cfg->call_agent_addr) {
+ addr.sin_port = htons(2727);
+ inet_aton(cfg->call_agent_addr, &addr.sin_addr);
+ if (connect(cfg->gw_fd.bfd.fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to connect to: '%s'. errno: %d\n",
+ cfg->call_agent_addr, errno);
+ close(cfg->gw_fd.bfd.fd);
+ cfg->gw_fd.bfd.fd = -1;
+ return -1;
+ }
+ }
+
+ if (osmo_fd_register(&cfg->gw_fd.bfd) != 0) {
+ LOGP(DLMGCP, LOGL_FATAL, "Failed to register the fd\n");
+ return -1;
+ }
+
+ LOGP(DLMGCP, LOGL_NOTICE, "Configured for MGCP.\n");
+ }
+
+ /* initialisation */
+ srand(time(NULL));
+
+ if (daemonize) {
+ rc = osmo_daemonize();
+ if (rc < 0) {
+ perror("Error during daemonize");
+ exit(1);
+ }
+ }
+
+ /* main loop */
+ while (1) {
+ osmo_select_main(0);
+ }
+
+
+ return 0;
+}
diff --git a/src/osmo-mgw/Makefile.am b/src/osmo-mgw/Makefile.am
new file mode 100644
index 0000000..0e12beb
--- /dev/null
+++ b/src/osmo-mgw/Makefile.am
@@ -0,0 +1,26 @@
+AM_CPPFLAGS = \
+ $(all_includes) \
+ -I$(top_srcdir)/include \
+ -I$(top_builddir) \
+ $(NULL)
+
+AM_CFLAGS = \
+ -Wall \
+ $(LIBOSMOCORE_CFLAGS) \
+ $(LIBOSMOVTY_CFLAGS) \
+ $(COVERAGE_CFLAGS) \
+ $(NULL)
+
+bin_PROGRAMS = \
+ osmo-mgw \
+ $(NULL)
+
+osmo_mgw_SOURCES = \
+ mgw_main.c \
+ $(NULL)
+
+osmo_mgw_LDADD = \
+ $(top_builddir)/src/libosmo-mgcp/libosmo-mgcp.la \
+ $(LIBOSMOCORE_LIBS) \
+ $(LIBOSMOVTY_LIBS) \
+ $(NULL)
diff --git a/src/osmo-mgw/mgw_main.c b/src/osmo-mgw/mgw_main.c
new file mode 100644
index 0000000..ab54e62
--- /dev/null
+++ b/src/osmo-mgw/mgw_main.c
@@ -0,0 +1,356 @@
+/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
+/* The main method to drive it as a standalone process */
+
+/*
+ * (C) 2009-2011 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2011 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <limits.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include <sys/socket.h>
+
+#include <osmocom/mgcp/mgcp.h>
+#include <osmocom/mgcp/mgcp_internal.h>
+#include <osmocom/mgcp/vty.h>
+#include <osmocom/mgcp/debug.h>
+
+#include <osmocom/core/application.h>
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/talloc.h>
+#include <osmocom/core/select.h>
+#include <osmocom/core/stats.h>
+#include <osmocom/core/rate_ctr.h>
+#include <osmocom/core/logging.h>
+
+#include <osmocom/vty/telnet_interface.h>
+#include <osmocom/vty/logging.h>
+#include <osmocom/vty/ports.h>
+#include <osmocom/vty/command.h>
+#include <osmocom/vty/stats.h>
+
+#include "../../bscconfig.h"
+
+#define _GNU_SOURCE
+#include <getopt.h>
+
+/* FIXME: Make use of the rtp proxy code */
+
+static struct mgcp_config *cfg;
+static struct mgcp_trunk_config *reset_trunk;
+static int reset_endpoints = 0;
+static int daemonize = 0;
+
+const char *openbsc_copyright =
+ "Copyright (C) 2009-2010 Holger Freyther and On-Waves\r\n"
+ "Copyright (C) 2017 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>\r\n"
+ "Contributions by Daniel Willmann, Jan Lübbe, Stefan Schmidt\r\n"
+ "Dieter Spaar, Andreas Eversberg, Harald Welte\r\n\r\n"
+ "License AGPLv3+: GNU AGPL version 3 or later <http://gnu.org/licenses/agpl-3.0.html>\r\n"
+ "This is free software: you are free to change and redistribute it.\r\n"
+ "There is NO WARRANTY, to the extent permitted by law.\r\n";
+
+static char *config_file = "mgcp.cfg";
+
+/* used by msgb and mgcp */
+void *tall_bsc_ctx = NULL;
+
+static void print_help()
+{
+ printf("Some useful help...\n");
+ printf(" -h --help is printing this text.\n");
+ printf(" -c --config-file filename The config file to use.\n");
+ printf(" -s --disable-color\n");
+ printf(" -D --daemonize Fork the process into a background daemon\n");
+ printf(" -V --version Print the version number\n");
+}
+
+static void handle_options(int argc, char **argv)
+{
+ while (1) {
+ int option_index = 0, c;
+ static struct option long_options[] = {
+ {"help", 0, 0, 'h'},
+ {"config-file", 1, 0, 'c'},
+ {"daemonize", 0, 0, 'D'},
+ {"version", 0, 0, 'V'},
+ {"disable-color", 0, 0, 's'},
+ {0, 0, 0, 0},
+ };
+
+ c = getopt_long(argc, argv, "hc:VD", long_options, &option_index);
+
+ if (c == -1)
+ break;
+
+ switch(c) {
+ case 'h':
+ print_help();
+ exit(0);
+ break;
+ case 'c':
+ config_file = talloc_strdup(tall_bsc_ctx, optarg);
+ break;
+ case 's':
+ log_set_use_color(osmo_stderr_target, 0);
+ break;
+ case 'V':
+ print_version(1);
+ exit(0);
+ break;
+ case 'D':
+ daemonize = 1;
+ break;
+ default:
+ /* ignore */
+ break;
+ };
+ }
+}
+
+/* Callback function to be called when the RSIP ("Reset in Progress") mgcp
+ * command is received */
+static int mgcp_rsip_cb(struct mgcp_trunk_config *tcfg)
+{
+ /* Set flag so that, when read_call_agent() is called next time
+ * the reset can progress */
+ reset_endpoints = 1;
+
+ reset_trunk = tcfg;
+
+ return 0;
+}
+
+static int read_call_agent(struct osmo_fd *fd, unsigned int what)
+{
+ struct sockaddr_in addr;
+ socklen_t slen = sizeof(addr);
+ struct msgb *msg;
+ struct msgb *resp;
+ int i;
+
+ msg = (struct msgb *) fd->data;
+
+ /* read one less so we can use it as a \0 */
+ int rc = recvfrom(cfg->gw_fd.bfd.fd, msg->data, msg->data_len - 1, 0,
+ (struct sockaddr *) &addr, &slen);
+ if (rc < 0) {
+ perror("Gateway failed to read");
+ return -1;
+ } else if (slen > sizeof(addr)) {
+ fprintf(stderr, "Gateway received message from outerspace: %zu %zu\n",
+ (size_t) slen, sizeof(addr));
+ return -1;
+ }
+
+ /* handle message now */
+ msg->l2h = msgb_put(msg, rc);
+ resp = mgcp_handle_message(cfg, msg);
+ msgb_reset(msg);
+
+ if (resp) {
+ sendto(cfg->gw_fd.bfd.fd, resp->l2h, msgb_l2len(resp), 0, (struct sockaddr *) &addr, sizeof(addr));
+ msgb_free(resp);
+ }
+
+ /* reset endpoints */
+ if (reset_endpoints) {
+ LOGP(DLMGCP, LOGL_NOTICE,
+ "Asked to reset endpoints: %d/%d\n",
+ reset_trunk->trunk_nr, reset_trunk->trunk_type);
+
+ /* reset flag */
+ reset_endpoints = 0;
+
+ /* Walk over all endpoints and trigger a release, this will release all
+ * endpoints, possible open connections are forcefully dropped */
+ for (i = 1; i < reset_trunk->number_endpoints; ++i)
+ mgcp_release_endp(&reset_trunk->endpoints[i]);
+ }
+
+ return 0;
+}
+
+int mgcp_vty_is_config_node(struct vty *vty, int node)
+{
+ switch (node) {
+ case CONFIG_NODE:
+ return 0;
+
+ default:
+ return 1;
+ }
+}
+
+int mgcp_vty_go_parent(struct vty *vty)
+{
+ switch (vty->node) {
+ case TRUNK_NODE:
+ vty->node = MGCP_NODE;
+ vty->index = NULL;
+ break;
+ case MGCP_NODE:
+ default:
+ if (mgcp_vty_is_config_node(vty, vty->node))
+ vty->node = CONFIG_NODE;
+ else
+ vty->node = ENABLE_NODE;
+
+ vty->index = NULL;
+ }
+
+ return vty->node;
+}
+
+
+static struct vty_app_info vty_info = {
+ .name = "OsmoMGW",
+ .version = PACKAGE_VERSION,
+ .go_parent_cb = mgcp_vty_go_parent,
+ .is_config_node = mgcp_vty_is_config_node,
+};
+
+static const struct log_info_cat log_categories[] = {
+ /* DLMGCP is provided by the MGCP library */
+ [DRTP] = {
+ .name = "DRTP",
+ .description = "RTP stream handling",
+ .color = "\033[1;30m",
+ .enabled = 1,.loglevel = LOGL_NOTICE,
+ },
+};
+
+const struct log_info log_info = {
+ .cat = log_categories,
+ .num_cat = ARRAY_SIZE(log_categories),
+};
+
+int main(int argc, char **argv)
+{
+ struct sockaddr_in addr;
+ int on = 1, rc;
+
+ tall_bsc_ctx = talloc_named_const(NULL, 1, "mgcp-callagent");
+ msgb_talloc_ctx_init(tall_bsc_ctx, 0);
+
+ osmo_init_ignore_signals();
+ osmo_init_logging(&log_info);
+
+ cfg = mgcp_config_alloc();
+ if (!cfg)
+ return -1;
+
+ vty_info.copyright = openbsc_copyright;
+ vty_init(&vty_info);
+ logging_vty_add_cmds(NULL);
+ osmo_stats_vty_add_cmds(&log_info);
+ mgcp_vty_init();
+
+ handle_options(argc, argv);
+
+ rate_ctr_init(tall_bsc_ctx);
+ osmo_stats_init(tall_bsc_ctx);
+
+ rc = mgcp_parse_config(config_file, cfg, MGCP_BSC);
+ if (rc < 0)
+ return rc;
+
+ /* start telnet after reading config for vty_get_bind_addr() */
+ rc = telnet_init_dynif(tall_bsc_ctx, NULL,
+ vty_get_bind_addr(), OSMO_VTY_PORT_BSC_MGCP);
+ if (rc < 0)
+ return rc;
+
+ /* Set the reset callback function. This functions is called when the
+ * mgcp-command "RSIP" (Reset in Progress) is received */
+ cfg->reset_cb = mgcp_rsip_cb;
+
+ /* we need to bind a socket */
+ if (rc == 0) {
+ cfg->gw_fd.bfd.when = BSC_FD_READ;
+ cfg->gw_fd.bfd.cb = read_call_agent;
+ cfg->gw_fd.bfd.fd = socket(AF_INET, SOCK_DGRAM, 0);
+ if (cfg->gw_fd.bfd.fd < 0) {
+ perror("Gateway failed to listen");
+ return -1;
+ }
+
+ setsockopt(cfg->gw_fd.bfd.fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+
+ memset(&addr, 0, sizeof(addr));
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons(cfg->source_port);
+ inet_aton(cfg->source_addr, &addr.sin_addr);
+
+ if (bind(cfg->gw_fd.bfd.fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ perror("Gateway failed to bind");
+ return -1;
+ }
+
+ cfg->gw_fd.bfd.data = msgb_alloc(4096, "mgcp-msg");
+ if (!cfg->gw_fd.bfd.data) {
+ fprintf(stderr, "Gateway memory error.\n");
+ return -1;
+ }
+
+ if (cfg->call_agent_addr) {
+ addr.sin_port = htons(2727);
+ inet_aton(cfg->call_agent_addr, &addr.sin_addr);
+ if (connect(cfg->gw_fd.bfd.fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "Failed to connect to: '%s'. errno: %d\n",
+ cfg->call_agent_addr, errno);
+ close(cfg->gw_fd.bfd.fd);
+ cfg->gw_fd.bfd.fd = -1;
+ return -1;
+ }
+ }
+
+ if (osmo_fd_register(&cfg->gw_fd.bfd) != 0) {
+ LOGP(DLMGCP, LOGL_FATAL, "Failed to register the fd\n");
+ return -1;
+ }
+
+ LOGP(DLMGCP, LOGL_NOTICE, "Configured for MGCP.\n");
+ }
+
+ /* initialisation */
+ srand(time(NULL));
+
+ if (daemonize) {
+ rc = osmo_daemonize();
+ if (rc < 0) {
+ perror("Error during daemonize");
+ exit(1);
+ }
+ }
+
+ /* main loop */
+ while (1) {
+ osmo_select_main(0);
+ }
+
+
+ return 0;
+}
diff --git a/tests/Makefile.am b/tests/Makefile.am
new file mode 100644
index 0000000..2eed271
--- /dev/null
+++ b/tests/Makefile.am
@@ -0,0 +1,64 @@
+SUBDIRS = \
+ legacy_mgcp \
+ mgcp_client \
+ mgcp \
+ $(NULL)
+
+# The `:;' works around a Bash 3.2 bug when the output is not writeable.
+$(srcdir)/package.m4: $(top_srcdir)/configure.ac
+ :;{ \
+ echo '# Signature of the current package.' && \
+ echo 'm4_define([AT_PACKAGE_NAME],' && \
+ echo ' [$(PACKAGE_NAME)])' && \
+ echo 'm4_define([AT_PACKAGE_TARNAME],' && \
+ echo ' [$(PACKAGE_TARNAME)])' && \
+ echo 'm4_define([AT_PACKAGE_VERSION],' && \
+ echo ' [$(PACKAGE_VERSION)])' && \
+ echo 'm4_define([AT_PACKAGE_STRING],' && \
+ echo ' [$(PACKAGE_STRING)])' && \
+ echo 'm4_define([AT_PACKAGE_BUGREPORT],' && \
+ echo ' [$(PACKAGE_BUGREPORT)])'; \
+ echo 'm4_define([AT_PACKAGE_URL],' && \
+ echo ' [$(PACKAGE_URL)])'; \
+ } >'$(srcdir)/package.m4'
+
+EXTRA_DIST = \
+ testsuite.at \
+ $(srcdir)/package.m4 \
+ $(TESTSUITE) \
+ vty_test_runner.py \
+ $(NULL)
+
+TESTSUITE = $(srcdir)/testsuite
+
+DISTCLEANFILES = \
+ atconfig \
+ $(NULL)
+
+if ENABLE_EXT_TESTS
+python-tests: $(BUILT_SOURCES)
+ osmotestvty.py -p $(abs_top_srcdir) -w $(abs_top_builddir) -v
+ osmotestconfig.py -p $(abs_top_srcdir) -w $(abs_top_builddir) -v
+ $(PYTHON) $(srcdir)/vty_test_runner.py -w $(abs_top_builddir) -v
+else
+python-tests: $(BUILT_SOURCES)
+ echo "Not running python-based tests (determined at configure-time)"
+endif
+
+check-local: atconfig $(TESTSUITE)
+ $(SHELL) '$(TESTSUITE)' $(TESTSUITEFLAGS)
+ $(MAKE) $(AM_MAKEFLAGS) python-tests
+
+installcheck-local: atconfig $(TESTSUITE)
+ $(SHELL) '$(TESTSUITE)' AUTOTEST_PATH='$(bindir)' \
+ $(TESTSUITEFLAGS)
+
+clean-local:
+ test ! -f '$(TESTSUITE)' || \
+ $(SHELL) '$(TESTSUITE)' --clean
+
+AUTOM4TE = $(SHELL) $(top_srcdir)/missing --run autom4te
+AUTOTEST = $(AUTOM4TE) --language=autotest
+$(TESTSUITE): $(srcdir)/testsuite.at $(srcdir)/package.m4
+ $(AUTOTEST) -I '$(srcdir)' -o $@.tmp $@.at
+ mv $@.tmp $@
diff --git a/tests/atlocal.in b/tests/atlocal.in
new file mode 100644
index 0000000..362bfa9
--- /dev/null
+++ b/tests/atlocal.in
@@ -0,0 +1,7 @@
+enable_nat_test='@osmo_ac_build_nat@'
+enable_smpp_test='@osmo_ac_build_smpp@'
+enable_bsc_test='@osmo_ac_build_bsc@'
+enable_mgcp_transcoding_test='@osmo_ac_mgcp_transcoding@'
+enable_sgsn_test='@found_libgtp_and_libcares@'
+enable_oap_test='@found_libgtp_and_libcares@'
+enable_gtphub_test='@found_libgtp_and_libcares@'
diff --git a/tests/legacy_mgcp/Makefile.am b/tests/legacy_mgcp/Makefile.am
new file mode 100644
index 0000000..f043124
--- /dev/null
+++ b/tests/legacy_mgcp/Makefile.am
@@ -0,0 +1,61 @@
+AM_CPPFLAGS = \
+ $(all_includes) \
+ -I$(top_srcdir)/include \
+ -I$(top_srcdir) \
+ $(NULL)
+
+AM_CFLAGS = \
+ -Wall \
+ -ggdb3 \
+ $(LIBOSMOCORE_CFLAGS) \
+ $(LIBOSMONETIF_CFLAGS) \
+ $(LIBBCG729_CFLAGS) \
+ $(COVERAGE_CFLAGS) \
+ $(NULL)
+
+AM_LDFLAGS = \
+ $(COVERAGE_LDFLAGS) \
+ $(NULL)
+
+EXTRA_DIST = \
+ mgcp_test.ok \
+ mgcp_transcoding_test.ok \
+ $(NULL)
+
+noinst_PROGRAMS = \
+ mgcp_test \
+ $(NULL)
+if BUILD_MGCP_TRANSCODING
+noinst_PROGRAMS += \
+ mgcp_transcoding_test \
+ $(NULL)
+endif
+
+mgcp_test_SOURCES = \
+ mgcp_test.c \
+ $(NULL)
+
+mgcp_test_LDADD = \
+ $(top_builddir)/src/libosmo-legacy-mgcp/libosmo-legacy-mgcp.la \
+ $(LIBOSMOCORE_LIBS) \
+ $(LIBOSMOVTY_LIBS) \
+ $(LIBRARY_DL) \
+ $(LIBOSMONETIF_LIBS) \
+ $(LIBRARY_GSM) \
+ -lm \
+ $(NULL)
+
+mgcp_transcoding_test_SOURCES = \
+ mgcp_transcoding_test.c \
+ $(NULL)
+
+mgcp_transcoding_test_LDADD = \
+ $(top_builddir)/src/libosmo-legacy-mgcp/libosmo-legacy-mgcp.la \
+ $(LIBOSMOCORE_LIBS) \
+ $(LIBOSMOVTY_LIBS) \
+ $(LIBBCG729_LIBS) \
+ $(LIBRARY_DL) \
+ $(LIBOSMONETIF_LIBS) \
+ $(LIBRARY_GSM) \
+ -lm \
+ $(NULL)
diff --git a/tests/legacy_mgcp/mgcp_test.c b/tests/legacy_mgcp/mgcp_test.c
new file mode 100644
index 0000000..1400893
--- /dev/null
+++ b/tests/legacy_mgcp/mgcp_test.c
@@ -0,0 +1,1236 @@
+/*
+ * (C) 2011-2012,2014 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2011-2012,2014 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#undef _GNU_SOURCE
+#define _GNU_SOURCE
+
+#include <osmocom/legacy_mgcp/mgcp.h>
+#include <osmocom/legacy_mgcp/vty.h>
+#include <osmocom/legacy_mgcp/mgcp_internal.h>
+
+#include <osmocom/core/application.h>
+#include <osmocom/core/talloc.h>
+#include <osmocom/core/utils.h>
+#include <string.h>
+#include <limits.h>
+#include <dlfcn.h>
+#include <time.h>
+#include <math.h>
+
+char *strline_r(char *str, char **saveptr);
+
+const char *strline_test_data =
+ "one CR\r"
+ "two CR\r"
+ "\r"
+ "one CRLF\r\n"
+ "two CRLF\r\n"
+ "\r\n"
+ "one LF\n"
+ "two LF\n"
+ "\n"
+ "mixed (4 lines)\r\r\n\n\r\n";
+
+#define EXPECTED_NUMBER_OF_LINES 13
+
+static void test_strline(void)
+{
+ char *save = NULL;
+ char *line;
+ char buf[2048];
+ int counter = 0;
+
+ osmo_strlcpy(buf, strline_test_data, sizeof(buf));
+
+ for (line = strline_r(buf, &save); line;
+ line = strline_r(NULL, &save)) {
+ printf("line: '%s'\n", line);
+ counter++;
+ }
+
+ OSMO_ASSERT(counter == EXPECTED_NUMBER_OF_LINES);
+}
+
+#define AUEP1 "AUEP 158663169 ds/e1-1/2@172.16.6.66 MGCP 1.0\r\n"
+#define AUEP1_RET "200 158663169 OK\r\n"
+#define AUEP2 "AUEP 18983213 ds/e1-2/1@172.16.6.66 MGCP 1.0\r\n"
+#define AUEP2_RET "500 18983213 FAIL\r\n"
+#define EMPTY "\r\n"
+#define EMPTY_RET NULL
+#define SHORT "CRCX \r\n"
+#define SHORT_RET "510 000000 FAIL\r\n"
+
+#define MDCX_WRONG_EP "MDCX 18983213 ds/e1-3/1@172.16.6.66 MGCP 1.0\r\n"
+#define MDCX_ERR_RET "510 18983213 FAIL\r\n"
+#define MDCX_UNALLOCATED "MDCX 18983214 ds/e1-1/2@172.16.6.66 MGCP 1.0\r\n"
+#define MDCX_RET "400 18983214 FAIL\r\n"
+#define MDCX3 "MDCX 18983215 1@mgw MGCP 1.0\r\n"
+#define MDCX3_RET "200 18983215 OK\r\n" \
+ "I: 1\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "s=-\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 0 RTP/AVP 126\r\n" \
+ "a=rtpmap:126 AMR/8000\r\n" \
+ "a=ptime:20\r\n"
+#define MDCX3_FMTP_RET "200 18983215 OK\r\n" \
+ "I: 3\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 3 23 IN IP4 0.0.0.0\r\n" \
+ "s=-\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 0 RTP/AVP 126\r\n" \
+ "a=rtpmap:126 AMR/8000\r\n" \
+ "a=fmtp:126 0/1/2\r\n" \
+ "a=ptime:20\r\n"
+#define MDCX4 "MDCX 18983216 1@mgw MGCP 1.0\r\n" \
+ "M: sendrecv\r" \
+ "C: 2\r\n" \
+ "I: 1\r\n" \
+ "L: p:20, a:AMR, nt:IN\r\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 4441 RTP/AVP 99\r\n" \
+ "a=rtpmap:99 AMR/8000\r\n" \
+ "a=ptime:40\r\n"
+#define MDCX4_RET(Ident) "200 " Ident " OK\r\n" \
+ "I: 1\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "s=-\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 0 RTP/AVP 126\r\n" \
+ "a=rtpmap:126 AMR/8000\r\n" \
+ "a=ptime:20\r\n"
+
+#define MDCX4_PT1 "MDCX 18983217 1@mgw MGCP 1.0\r\n" \
+ "M: sendrecv\r" \
+ "C: 2\r\n" \
+ "I: 1\r\n" \
+ "L: p:20-40, a:AMR, nt:IN\r\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 4441 RTP/AVP 99\r\n" \
+ "a=rtpmap:99 AMR/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define MDCX4_PT2 "MDCX 18983218 1@mgw MGCP 1.0\r\n" \
+ "M: sendrecv\r" \
+ "C: 2\r\n" \
+ "I: 1\r\n" \
+ "L: p:20-20, a:AMR, nt:IN\r\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 4441 RTP/AVP 99\r\n" \
+ "a=rtpmap:99 AMR/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define MDCX4_PT3 "MDCX 18983219 1@mgw MGCP 1.0\r\n" \
+ "M: sendrecv\r" \
+ "C: 2\r\n" \
+ "I: 1\r\n" \
+ "L: a:AMR, nt:IN\r\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 4441 RTP/AVP 99\r\n" \
+ "a=rtpmap:99 AMR/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define MDCX4_SO "MDCX 18983220 1@mgw MGCP 1.0\r\n" \
+ "M: sendonly\r" \
+ "C: 2\r\n" \
+ "I: 1\r\n" \
+ "L: p:20, a:AMR, nt:IN\r\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 4441 RTP/AVP 99\r\n" \
+ "a=rtpmap:99 AMR/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define MDCX4_RO "MDCX 18983221 1@mgw MGCP 1.0\r\n" \
+ "M: recvonly\r" \
+ "C: 2\r\n" \
+ "I: 1\r\n" \
+ "L: p:20, a:AMR, nt:IN\r\n"
+
+#define SHORT2 "CRCX 1"
+#define SHORT2_RET "510 000000 FAIL\r\n"
+#define SHORT3 "CRCX 1 1@mgw"
+#define SHORT4 "CRCX 1 1@mgw MGCP"
+#define SHORT5 "CRCX 1 1@mgw MGCP 1.0"
+
+#define CRCX "CRCX 2 1@mgw MGCP 1.0\r\n" \
+ "M: recvonly\r\n" \
+ "C: 2\r\n" \
+ "X\r\n" \
+ "L: p:20\r\n" \
+ "\r\n" \
+ "v=0\r\n" \
+ "c=IN IP4 123.12.12.123\r\n" \
+ "m=audio 5904 RTP/AVP 97\r\n" \
+ "a=rtpmap:97 GSM-EFR/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define CRCX_RET "200 2 OK\r\n" \
+ "I: 1\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "s=-\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 0 RTP/AVP 126\r\n" \
+ "a=rtpmap:126 AMR/8000\r\n" \
+ "a=ptime:20\r\n"
+
+#define CRCX_RET_NO_RTPMAP "200 2 OK\r\n" \
+ "I: 1\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "s=-\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 0 RTP/AVP 126\r\n" \
+ "a=ptime:20\r\n"
+
+#define CRCX_FMTP_RET "200 2 OK\r\n" \
+ "I: 3\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 3 23 IN IP4 0.0.0.0\r\n" \
+ "s=-\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 0 RTP/AVP 126\r\n" \
+ "a=rtpmap:126 AMR/8000\r\n" \
+ "a=fmtp:126 0/1/2\r\n" \
+ "a=ptime:20\r\n"
+
+#define CRCX_ZYN "CRCX 2 1@mgw MGCP 1.0\r" \
+ "M: recvonly\r" \
+ "C: 2\r\r" \
+ "v=0\r" \
+ "c=IN IP4 123.12.12.123\r" \
+ "m=audio 5904 RTP/AVP 97\r" \
+ "a=rtpmap:97 GSM-EFR/8000\r"
+
+#define CRCX_ZYN_RET "200 2 OK\r\n" \
+ "I: 2\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 2 23 IN IP4 0.0.0.0\r\n" \
+ "s=-\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 0 RTP/AVP 126\r\n" \
+ "a=rtpmap:126 AMR/8000\r\n" \
+ "a=ptime:20\r\n"
+
+#define DLCX "DLCX 7 1@mgw MGCP 1.0\r\n" \
+ "C: 2\r\n"
+
+#define DLCX_RET "250 7 OK\r\n" \
+ "P: PS=0, OS=0, PR=0, OR=0, PL=0, JI=0\r\n" \
+ "X-Osmo-CP: EC TIS=0, TOS=0, TIR=0, TOR=0\r\n"
+
+#define RQNT "RQNT 186908780 1@mgw MGCP 1.0\r\n" \
+ "X: B244F267488\r\n" \
+ "S: D/9\r\n"
+
+#define RQNT2 "RQNT 186908781 1@mgw MGCP 1.0\r\n" \
+ "X: ADD4F26746F\r\n" \
+ "R: D/[0-9#*](N), G/ft, fxr/t38\r\n"
+
+#define RQNT1_RET "200 186908780 OK\r\n"
+#define RQNT2_RET "200 186908781 OK\r\n"
+
+#define PTYPE_IGNORE 0 /* == default initializer */
+#define PTYPE_NONE 128
+#define PTYPE_NYI PTYPE_NONE
+
+#define CRCX_MULT_1 "CRCX 2 1@mgw MGCP 1.0\r\n" \
+ "M: recvonly\r\n" \
+ "C: 2\r\n" \
+ "X\r\n" \
+ "L: p:20\r\n" \
+ "\r\n" \
+ "v=0\r\n" \
+ "c=IN IP4 123.12.12.123\r\n" \
+ "m=audio 5904 RTP/AVP 18 97\r\n"\
+ "a=rtpmap:18 G729/8000\r\n" \
+ "a=rtpmap:97 GSM-EFR/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define CRCX_MULT_2 "CRCX 2 2@mgw MGCP 1.0\r\n" \
+ "M: recvonly\r\n" \
+ "C: 2\r\n" \
+ "X\r\n" \
+ "L: p:20\r\n" \
+ "\r\n" \
+ "v=0\r\n" \
+ "c=IN IP4 123.12.12.123\r\n" \
+ "m=audio 5904 RTP/AVP 18 97 101\r\n"\
+ "a=rtpmap:18 G729/8000\r\n" \
+ "a=rtpmap:97 GSM-EFR/8000\r\n" \
+ "a=rtpmap:101 FOO/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define CRCX_MULT_3 "CRCX 2 3@mgw MGCP 1.0\r\n" \
+ "M: recvonly\r\n" \
+ "C: 2\r\n" \
+ "X\r\n" \
+ "L: p:20\r\n" \
+ "\r\n" \
+ "v=0\r\n" \
+ "c=IN IP4 123.12.12.123\r\n" \
+ "m=audio 5904 RTP/AVP\r\n" \
+ "a=rtpmap:18 G729/8000\r\n" \
+ "a=rtpmap:97 GSM-EFR/8000\r\n" \
+ "a=rtpmap:101 FOO/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define CRCX_MULT_4 "CRCX 2 4@mgw MGCP 1.0\r\n" \
+ "M: recvonly\r\n" \
+ "C: 2\r\n" \
+ "X\r\n" \
+ "L: p:20\r\n" \
+ "\r\n" \
+ "v=0\r\n" \
+ "c=IN IP4 123.12.12.123\r\n" \
+ "m=audio 5904 RTP/AVP 18\r\n" \
+ "a=rtpmap:18 G729/8000\r\n" \
+ "a=rtpmap:97 GSM-EFR/8000\r\n" \
+ "a=rtpmap:101 FOO/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define CRCX_MULT_GSM_EXACT \
+ "CRCX 259260421 5@mgw MGCP 1.0\r\n" \
+ "C: 1355c6041e\r\n" \
+ "I: 3\r\n" \
+ "L: p:20, a:GSM, nt:IN\r\n" \
+ "M: recvonly\r\n" \
+ "\r\n" \
+ "v=0\r\n" \
+ "o=- 1439038275 1439038275 IN IP4 192.168.181.247\r\n" \
+ "s=-\r\nc=IN IP4 192.168.181.247\r\n" \
+ "t=0 0\r\nm=audio 29084 RTP/AVP 255 0 8 3 18 4 96 97 101\r\n" \
+ "a=rtpmap:0 PCMU/8000\r\n" \
+ "a=rtpmap:8 PCMA/8000\r\n" \
+ "a=rtpmap:3 gsm/8000\r\n" \
+ "a=rtpmap:18 G729/8000\r\n" \
+ "a=fmtp:18 annexb=no\r\n" \
+ "a=rtpmap:4 G723/8000\r\n" \
+ "a=rtpmap:96 iLBC/8000\r\n" \
+ "a=fmtp:96 mode=20\r\n" \
+ "a=rtpmap:97 iLBC/8000\r\n" \
+ "a=fmtp:97 mode=30\r\n" \
+ "a=rtpmap:101 telephone-event/8000\r\n" \
+ "a=fmtp:101 0-15\r\n" \
+ "a=recvonly\r\n"
+#define MDCX_NAT_DUMMY \
+ "MDCX 23 5@mgw MGCP 1.0\r\n" \
+ "C: 1355c6041e\r\n" \
+ "\r\n" \
+ "c=IN IP4 8.8.8.8\r\n" \
+ "m=audio 16434 RTP/AVP 255\r\n"
+
+
+struct mgcp_test {
+ const char *name;
+ const char *req;
+ const char *exp_resp;
+ int exp_net_ptype;
+ int exp_bts_ptype;
+
+ const char *extra_fmtp;
+};
+
+static const struct mgcp_test tests[] = {
+ { "AUEP1", AUEP1, AUEP1_RET },
+ { "AUEP2", AUEP2, AUEP2_RET },
+ { "MDCX1", MDCX_WRONG_EP, MDCX_ERR_RET },
+ { "MDCX2", MDCX_UNALLOCATED, MDCX_RET },
+ { "CRCX", CRCX, CRCX_RET, 97, 126 },
+ { "MDCX3", MDCX3, MDCX3_RET, PTYPE_NONE, 126 },
+ { "MDCX4", MDCX4, MDCX4_RET("18983216"), 99, 126 },
+ { "MDCX4_PT1", MDCX4_PT1, MDCX4_RET("18983217"), 99, 126 },
+ { "MDCX4_PT2", MDCX4_PT2, MDCX4_RET("18983218"), 99, 126 },
+ { "MDCX4_PT3", MDCX4_PT3, MDCX4_RET("18983219"), 99, 126 },
+ { "MDCX4_SO", MDCX4_SO, MDCX4_RET("18983220"), 99, 126 },
+ { "MDCX4_RO", MDCX4_RO, MDCX4_RET("18983221"), PTYPE_IGNORE, 126 },
+ { "DLCX", DLCX, DLCX_RET, -1, -1 },
+ { "CRCX_ZYN", CRCX_ZYN, CRCX_ZYN_RET, 97, 126 },
+ { "EMPTY", EMPTY, EMPTY_RET },
+ { "SHORT1", SHORT, SHORT_RET },
+ { "SHORT2", SHORT2, SHORT2_RET },
+ { "SHORT3", SHORT3, SHORT2_RET },
+ { "SHORT4", SHORT4, SHORT2_RET },
+ { "RQNT1", RQNT, RQNT1_RET },
+ { "RQNT2", RQNT2, RQNT2_RET },
+ { "DLCX", DLCX, DLCX_RET, -1, -1 },
+ { "CRCX", CRCX, CRCX_FMTP_RET, 97, 126, .extra_fmtp = "a=fmtp:126 0/1/2" },
+ { "MDCX3", MDCX3, MDCX3_FMTP_RET, PTYPE_NONE, 126 , .extra_fmtp = "a=fmtp:126 0/1/2" },
+ { "DLCX", DLCX, DLCX_RET, -1, -1 , .extra_fmtp = "a=fmtp:126 0/1/2" },
+};
+
+static const struct mgcp_test retransmit[] = {
+ { "CRCX", CRCX, CRCX_RET },
+ { "RQNT1", RQNT, RQNT1_RET },
+ { "RQNT2", RQNT2, RQNT2_RET },
+ { "MDCX3", MDCX3, MDCX3_RET },
+ { "DLCX", DLCX, DLCX_RET },
+};
+
+static struct msgb *create_msg(const char *str)
+{
+ struct msgb *msg;
+
+ msg = msgb_alloc_headroom(4096, 128, "MGCP msg");
+ int len = sprintf((char *)msg->data, "%s", str);
+ msg->l2h = msgb_put(msg, len);
+ return msg;
+}
+
+static int last_endpoint = -1;
+
+static int mgcp_test_policy_cb(struct mgcp_trunk_config *cfg, int endpoint,
+ int state, const char *transactio_id)
+{
+ fprintf(stderr, "Policy CB got state %d on endpoint %d\n",
+ state, endpoint);
+ last_endpoint = endpoint;
+ return MGCP_POLICY_CONT;
+}
+
+#define MGCP_DUMMY_LOAD 0x23
+static int dummy_packets = 0;
+/* override and forward */
+ssize_t sendto(int sockfd, const void *buf, size_t len, int flags,
+ const struct sockaddr *dest_addr, socklen_t addrlen)
+{
+ typedef ssize_t (*sendto_t)(int, const void *, size_t, int,
+ const struct sockaddr *, socklen_t);
+ static sendto_t real_sendto = NULL;
+ uint32_t dest_host = htonl(((struct sockaddr_in *)dest_addr)->sin_addr.s_addr);
+ int dest_port = htons(((struct sockaddr_in *)dest_addr)->sin_port);
+
+ if (!real_sendto)
+ real_sendto = dlsym(RTLD_NEXT, "sendto");
+
+ if (len == 1 && ((const char *)buf)[0] == MGCP_DUMMY_LOAD ) {
+ fprintf(stderr, "Dummy packet to 0x%08x:%d, msg length %zu\n%s\n\n",
+ dest_host, dest_port,
+ len, osmo_hexdump(buf, len));
+ dummy_packets += 1;
+ }
+
+ return real_sendto(sockfd, buf, len, flags, dest_addr, addrlen);
+}
+
+static int64_t force_monotonic_time_us = -1;
+/* override and forward */
+int clock_gettime(clockid_t clk_id, struct timespec *tp)
+{
+ typedef int (*clock_gettime_t)(clockid_t clk_id, struct timespec *tp);
+ static clock_gettime_t real_clock_gettime = NULL;
+
+ if (!real_clock_gettime)
+ real_clock_gettime = dlsym(RTLD_NEXT, "clock_gettime");
+
+ if (clk_id == CLOCK_MONOTONIC && force_monotonic_time_us >= 0) {
+ tp->tv_sec = force_monotonic_time_us / 1000000;
+ tp->tv_nsec = (force_monotonic_time_us % 1000000) * 1000;
+ return 0;
+ }
+
+ return real_clock_gettime(clk_id, tp);
+}
+
+#define CONN_UNMODIFIED (0x1000)
+
+static void test_values(void)
+{
+ /* Check that NONE disables all output */
+ OSMO_ASSERT((MGCP_CONN_NONE & MGCP_CONN_RECV_SEND) == 0);
+
+ /* Check that LOOPBACK enables all output */
+ OSMO_ASSERT((MGCP_CONN_LOOPBACK & MGCP_CONN_RECV_SEND) ==
+ MGCP_CONN_RECV_SEND);
+}
+
+
+static void test_messages(void)
+{
+ struct mgcp_config *cfg;
+ struct mgcp_endpoint *endp;
+ int i;
+
+ cfg = mgcp_config_alloc();
+
+ cfg->trunk.number_endpoints = 64;
+ mgcp_endpoints_allocate(&cfg->trunk);
+
+ cfg->policy_cb = mgcp_test_policy_cb;
+
+ mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));
+
+ /* reset endpoints */
+ for (i = 0; i < cfg->trunk.number_endpoints; i++) {
+ endp = &cfg->trunk.endpoints[i];
+ endp->net_end.codec.payload_type = PTYPE_NONE;
+ endp->net_end.packet_duration_ms = -1;
+
+ OSMO_ASSERT(endp->conn_mode == MGCP_CONN_NONE);
+ endp->conn_mode |= CONN_UNMODIFIED;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(tests); i++) {
+ const struct mgcp_test *t = &tests[i];
+ struct msgb *inp;
+ struct msgb *msg;
+
+ printf("Testing %s\n", t->name);
+
+ last_endpoint = -1;
+ dummy_packets = 0;
+
+ osmo_talloc_replace_string(cfg, &cfg->trunk.audio_fmtp_extra, t->extra_fmtp);
+
+ inp = create_msg(t->req);
+ msg = mgcp_handle_message(cfg, inp);
+ msgb_free(inp);
+ if (!t->exp_resp) {
+ if (msg)
+ printf("%s failed '%s'\n", t->name, (char *) msg->data);
+ } else if (strcmp((char *) msg->data, t->exp_resp) != 0)
+ printf("%s failed.\nExpected:\n%s\nGot:\n%s\n",
+ t->name, t->exp_resp, (char *) msg->data);
+ msgb_free(msg);
+
+ if (dummy_packets)
+ printf("Dummy packets: %d\n", dummy_packets);
+
+ if (last_endpoint != -1) {
+ endp = &cfg->trunk.endpoints[last_endpoint];
+
+ if (endp->net_end.packet_duration_ms != -1)
+ printf("Detected packet duration: %d\n",
+ endp->net_end.packet_duration_ms);
+ else
+ printf("Packet duration not set\n");
+ if (endp->local_options.pkt_period_min ||
+ endp->local_options.pkt_period_max)
+ printf("Requested packetetization period: "
+ "%d-%d\n",
+ endp->local_options.pkt_period_min,
+ endp->local_options.pkt_period_max);
+ else
+ printf("Requested packetization period not set\n");
+
+ if ((endp->conn_mode & CONN_UNMODIFIED) == 0) {
+ printf("Connection mode: %d:%s%s%s%s\n",
+ endp->conn_mode,
+ !endp->conn_mode ? " NONE" : "",
+ endp->conn_mode & MGCP_CONN_SEND_ONLY ?
+ " SEND" : "",
+ endp->conn_mode & MGCP_CONN_RECV_ONLY ?
+ " RECV" : "",
+ endp->conn_mode & MGCP_CONN_LOOPBACK &
+ ~MGCP_CONN_RECV_SEND ?
+ " LOOP" : "");
+ fprintf(stderr,
+ "BTS output %sabled, NET output %sabled\n",
+ endp->bts_end.output_enabled ? "en" : "dis",
+ endp->net_end.output_enabled ? "en" : "dis");
+ } else
+ printf("Connection mode not set\n");
+
+ OSMO_ASSERT(endp->net_end.output_enabled ==
+ (endp->conn_mode & MGCP_CONN_SEND_ONLY ? 1 : 0));
+ OSMO_ASSERT(endp->bts_end.output_enabled ==
+ (endp->conn_mode & MGCP_CONN_RECV_ONLY ? 1 : 0));
+
+ endp->net_end.packet_duration_ms = -1;
+ endp->local_options.pkt_period_min = 0;
+ endp->local_options.pkt_period_max = 0;
+ endp->conn_mode |= CONN_UNMODIFIED;
+ }
+
+
+ /* Check detected payload type */
+ if (t->exp_net_ptype != PTYPE_IGNORE ||
+ t->exp_bts_ptype != PTYPE_IGNORE) {
+ OSMO_ASSERT(last_endpoint != -1);
+ endp = &cfg->trunk.endpoints[last_endpoint];
+
+ fprintf(stderr, "endpoint %d: "
+ "payload type BTS %d (exp %d), NET %d (exp %d)\n",
+ last_endpoint,
+ endp->bts_end.codec.payload_type, t->exp_bts_ptype,
+ endp->net_end.codec.payload_type, t->exp_net_ptype);
+
+ if (t->exp_bts_ptype != PTYPE_IGNORE)
+ OSMO_ASSERT(endp->bts_end.codec.payload_type ==
+ t->exp_bts_ptype);
+ if (t->exp_net_ptype != PTYPE_IGNORE)
+ OSMO_ASSERT(endp->net_end.codec.payload_type ==
+ t->exp_net_ptype);
+
+ /* Reset them again for next test */
+ endp->net_end.codec.payload_type = PTYPE_NONE;
+ }
+ }
+
+ talloc_free(cfg);
+}
+
+static void test_retransmission(void)
+{
+ struct mgcp_config *cfg;
+ int i;
+
+ cfg = mgcp_config_alloc();
+
+ cfg->trunk.number_endpoints = 64;
+ mgcp_endpoints_allocate(&cfg->trunk);
+
+ mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));
+
+ /* reset endpoints */
+ for (i = 0; i < cfg->trunk.number_endpoints; i++) {
+ struct mgcp_endpoint *endp;
+ endp = &cfg->trunk.endpoints[i];
+ endp->bts_end.packet_duration_ms = 20;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(retransmit); i++) {
+ const struct mgcp_test *t = &retransmit[i];
+ struct msgb *inp;
+ struct msgb *msg;
+
+ printf("Testing %s\n", t->name);
+
+ inp = create_msg(t->req);
+ msg = mgcp_handle_message(cfg, inp);
+ msgb_free(inp);
+ if (strcmp((char *) msg->data, t->exp_resp) != 0)
+ printf("%s failed '%s'\n", t->name, (char *) msg->data);
+ msgb_free(msg);
+
+ /* Retransmit... */
+ printf("Re-transmitting %s\n", t->name);
+ inp = create_msg(t->req);
+ msg = mgcp_handle_message(cfg, inp);
+ msgb_free(inp);
+ if (strcmp((char *) msg->data, t->exp_resp) != 0)
+ printf("%s failed '%s'\n", t->name, (char *) msg->data);
+ msgb_free(msg);
+ }
+
+ talloc_free(cfg);
+}
+
+static int rqnt_cb(struct mgcp_endpoint *endp, char _tone)
+{
+ ptrdiff_t tone = _tone;
+ endp->cfg->data = (void *) tone;
+ return 0;
+}
+
+static void test_rqnt_cb(void)
+{
+ struct mgcp_config *cfg;
+ struct msgb *inp, *msg;
+
+ cfg = mgcp_config_alloc();
+ cfg->rqnt_cb = rqnt_cb;
+
+ cfg->trunk.number_endpoints = 64;
+ mgcp_endpoints_allocate(&cfg->trunk);
+
+ mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));
+
+ inp = create_msg(CRCX);
+ msgb_free(mgcp_handle_message(cfg, inp));
+ msgb_free(inp);
+
+ /* send the RQNT and check for the CB */
+ inp = create_msg(RQNT);
+ msg = mgcp_handle_message(cfg, inp);
+ if (strncmp((const char *) msg->l2h, "200", 3) != 0) {
+ printf("FAILED: message is not 200. '%s'\n", msg->l2h);
+ abort();
+ }
+
+ if (cfg->data != (void *) '9') {
+ printf("FAILED: callback not called: %p\n", cfg->data);
+ abort();
+ }
+
+ msgb_free(msg);
+ msgb_free(inp);
+
+ inp = create_msg(DLCX);
+ msgb_free(mgcp_handle_message(cfg, inp));
+ msgb_free(inp);
+ talloc_free(cfg);
+}
+
+struct pl_test {
+ int cycles;
+ uint16_t base_seq;
+ uint16_t max_seq;
+ uint32_t packets;
+
+ uint32_t expected;
+ int loss;
+};
+
+static const struct pl_test pl_test_dat[] = {
+ /* basic.. just one package */
+ { .cycles = 0, .base_seq = 0, .max_seq = 0, .packets = 1, .expected = 1, .loss = 0},
+ /* some packages and a bit of loss */
+ { .cycles = 0, .base_seq = 0, .max_seq = 100, .packets = 100, .expected = 101, .loss = 1},
+ /* wrap around */
+ { .cycles = 1<<16, .base_seq = 0xffff, .max_seq = 2, .packets = 4, .expected = 4, .loss = 0},
+ /* min loss */
+ { .cycles = 0, .base_seq = 0, .max_seq = 0, .packets = UINT_MAX, .expected = 1, .loss = INT_MIN },
+ /* max loss, with wrap around on expected max */
+ { .cycles = INT_MAX, .base_seq = 0, .max_seq = UINT16_MAX, .packets = 0, .expected = ((uint32_t)(INT_MAX) + UINT16_MAX + 1), .loss = INT_MAX },
+};
+
+static void test_packet_loss_calc(void)
+{
+ int i;
+ printf("Testing packet loss calculation.\n");
+
+ for (i = 0; i < ARRAY_SIZE(pl_test_dat); ++i) {
+ uint32_t expected;
+ int loss;
+ struct mgcp_rtp_state state;
+ struct mgcp_rtp_end rtp;
+ memset(&state, 0, sizeof(state));
+ memset(&rtp, 0, sizeof(rtp));
+
+ state.stats_initialized = 1;
+ state.stats_base_seq = pl_test_dat[i].base_seq;
+ state.stats_max_seq = pl_test_dat[i].max_seq;
+ state.stats_cycles = pl_test_dat[i].cycles;
+
+ rtp.packets = pl_test_dat[i].packets;
+ mgcp_state_calc_loss(&state, &rtp, &expected, &loss);
+
+ if (loss != pl_test_dat[i].loss || expected != pl_test_dat[i].expected) {
+ printf("FAIL: Wrong exp/loss at idx(%d) Loss(%d vs. %d) Exp(%u vs. %u)\n",
+ i, loss, pl_test_dat[i].loss,
+ expected, pl_test_dat[i].expected);
+ }
+ }
+}
+
+static void test_mgcp_stats(void)
+{
+ printf("Testing stat parsing\n");
+
+ uint32_t bps, bos, pr, _or, jitter;
+ struct msgb *msg;
+ int loss;
+ int rc;
+
+ msg = create_msg(DLCX_RET);
+ rc = mgcp_parse_stats(msg, &bps, &bos, &pr, &_or, &loss, &jitter);
+ printf("Parsing result: %d\n", rc);
+ if (bps != 0 || bos != 0 || pr != 0 || _or != 0 || loss != 0 || jitter != 0)
+ printf("FAIL: Parsing failed1.\n");
+ msgb_free(msg);
+
+ msg = create_msg("250 7 OK\r\nP: PS=10, OS=20, PR=30, OR=40, PL=-3, JI=40\r\n");
+ rc = mgcp_parse_stats(msg, &bps, &bos, &pr, &_or, &loss, &jitter);
+ printf("Parsing result: %d\n", rc);
+ if (bps != 10 || bos != 20 || pr != 30 || _or != 40 || loss != -3 || jitter != 40)
+ printf("FAIL: Parsing failed2.\n");
+ msgb_free(msg);
+}
+
+struct rtp_packet_info {
+ float txtime;
+ int len;
+ char *data;
+};
+
+struct rtp_packet_info test_rtp_packets1[] = {
+ /* RTP: SeqNo=0, TS=0 */
+ {0.000000, 20, "\x80\x62\x00\x00\x00\x00\x00\x00\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=1, TS=160 */
+ {0.020000, 20, "\x80\x62\x00\x01\x00\x00\x00\xA0\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=2, TS=320 */
+ {0.040000, 20, "\x80\x62\x00\x02\x00\x00\x01\x40\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* Repeat RTP timestamp: */
+ /* RTP: SeqNo=3, TS=320 */
+ {0.060000, 20, "\x80\x62\x00\x03\x00\x00\x01\x40\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=4, TS=480 */
+ {0.080000, 20, "\x80\x62\x00\x04\x00\x00\x01\xE0\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=5, TS=640 */
+ {0.100000, 20, "\x80\x62\x00\x05\x00\x00\x02\x80\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* Double skip RTP timestamp (delta = 2*160): */
+ /* RTP: SeqNo=6, TS=960 */
+ {0.120000, 20, "\x80\x62\x00\x06\x00\x00\x03\xC0\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=7, TS=1120 */
+ {0.140000, 20, "\x80\x62\x00\x07\x00\x00\x04\x60\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=8, TS=1280 */
+ {0.160000, 20, "\x80\x62\x00\x08\x00\x00\x05\x00\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* Non 20ms RTP timestamp (delta = 120): */
+ /* RTP: SeqNo=9, TS=1400 */
+ {0.180000, 20, "\x80\x62\x00\x09\x00\x00\x05\x78\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=10, TS=1560 */
+ {0.200000, 20, "\x80\x62\x00\x0A\x00\x00\x06\x18\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=11, TS=1720 */
+ {0.220000, 20, "\x80\x62\x00\x0B\x00\x00\x06\xB8\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* SSRC changed to 0x10203040, RTP timestamp jump */
+ /* RTP: SeqNo=12, TS=34688 */
+ {0.240000, 20, "\x80\x62\x00\x0C\x00\x00\x87\x80\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=13, TS=34848 */
+ {0.260000, 20, "\x80\x62\x00\x0D\x00\x00\x88\x20\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=14, TS=35008 */
+ {0.280000, 20, "\x80\x62\x00\x0E\x00\x00\x88\xC0\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* Non 20ms RTP timestamp (delta = 120): */
+ /* RTP: SeqNo=15, TS=35128 */
+ {0.300000, 20, "\x80\x62\x00\x0F\x00\x00\x89\x38\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=16, TS=35288 */
+ {0.320000, 20, "\x80\x62\x00\x10\x00\x00\x89\xD8\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=17, TS=35448 */
+ {0.340000, 20, "\x80\x62\x00\x11\x00\x00\x8A\x78\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x8A\xAB\xCD\xEF"},
+ /* SeqNo increment by 2, RTP timestamp delta = 320: */
+ /* RTP: SeqNo=19, TS=35768 */
+ {0.360000, 20, "\x80\x62\x00\x13\x00\x00\x8B\xB8\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=20, TS=35928 */
+ {0.380000, 20, "\x80\x62\x00\x14\x00\x00\x8C\x58\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=21, TS=36088 */
+ {0.380000, 20, "\x80\x62\x00\x15\x00\x00\x8C\xF8\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* Repeat last packet */
+ /* RTP: SeqNo=21, TS=36088 */
+ {0.400000, 20, "\x80\x62\x00\x15\x00\x00\x8C\xF8\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=22, TS=36248 */
+ {0.420000, 20, "\x80\x62\x00\x16\x00\x00\x8D\x98\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=23, TS=36408 */
+ {0.440000, 20, "\x80\x62\x00\x17\x00\x00\x8E\x38\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* Don't increment SeqNo but increment timestamp by 160 */
+ /* RTP: SeqNo=23, TS=36568 */
+ {0.460000, 20, "\x80\x62\x00\x17\x00\x00\x8E\xD8\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=24, TS=36728 */
+ {0.480000, 20, "\x80\x62\x00\x18\x00\x00\x8F\x78\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=25, TS=36888 */
+ {0.500000, 20, "\x80\x62\x00\x19\x00\x00\x90\x18\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* SSRC changed to 0x50607080, RTP timestamp jump, Delay of 1.5s,
+ * SeqNo jump */
+ /* RTP: SeqNo=1000, TS=160000 */
+ {2.000000, 20, "\x80\x62\x03\xE8\x00\x02\x71\x00\x50\x60\x70\x80"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=1001, TS=160160 */
+ {2.020000, 20, "\x80\x62\x03\xE9\x00\x02\x71\xA0\x50\x60\x70\x80"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=1002, TS=160320 */
+ {2.040000, 20, "\x80\x62\x03\xEA\x00\x02\x72\x40\x50\x60\x70\x80"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+};
+
+void mgcp_patch_and_count(struct mgcp_endpoint *endp, struct mgcp_rtp_state *state,
+ struct mgcp_rtp_end *rtp_end, struct sockaddr_in *addr,
+ char *data, int len);
+
+static void test_packet_error_detection(int patch_ssrc, int patch_ts)
+{
+ int i;
+
+ struct mgcp_trunk_config trunk;
+ struct mgcp_endpoint endp;
+ struct mgcp_rtp_state state;
+ struct mgcp_rtp_end *rtp = &endp.net_end;
+ struct sockaddr_in addr = {0};
+ char buffer[4096];
+ uint32_t last_ssrc = 0;
+ uint32_t last_timestamp = 0;
+ uint32_t last_seqno = 0;
+ int last_in_ts_err_cnt = 0;
+ int last_out_ts_err_cnt = 0;
+
+ printf("Testing packet error detection%s%s.\n",
+ patch_ssrc ? ", patch SSRC" : "",
+ patch_ts ? ", patch timestamps" : "");
+
+ memset(&trunk, 0, sizeof(trunk));
+ memset(&endp, 0, sizeof(endp));
+ memset(&state, 0, sizeof(state));
+
+ trunk.number_endpoints = 1;
+ trunk.endpoints = &endp;
+ trunk.force_constant_ssrc = patch_ssrc;
+ trunk.force_aligned_timing = patch_ts;
+
+ endp.tcfg = &trunk;
+
+ mgcp_initialize_endp(&endp);
+
+ rtp->codec.payload_type = 98;
+
+ for (i = 0; i < ARRAY_SIZE(test_rtp_packets1); ++i) {
+ struct rtp_packet_info *info = test_rtp_packets1 + i;
+
+ force_monotonic_time_us = round(1000000.0 * info->txtime);
+
+ OSMO_ASSERT(info->len <= sizeof(buffer));
+ OSMO_ASSERT(info->len >= 0);
+ memmove(buffer, info->data, info->len);
+
+ mgcp_rtp_end_config(&endp, 1, rtp);
+
+ mgcp_patch_and_count(&endp, &state, rtp, &addr,
+ buffer, info->len);
+
+ if (state.out_stream.ssrc != last_ssrc) {
+ printf("Output SSRC changed to %08x\n",
+ state.out_stream.ssrc);
+ last_ssrc = state.out_stream.ssrc;
+ }
+
+ printf("In TS: %d, dTS: %d, Seq: %d\n",
+ state.in_stream.last_timestamp,
+ state.in_stream.last_tsdelta,
+ state.in_stream.last_seq);
+
+ printf("Out TS change: %d, dTS: %d, Seq change: %d, "
+ "TS Err change: in %+d, out %+d\n",
+ state.out_stream.last_timestamp - last_timestamp,
+ state.out_stream.last_tsdelta,
+ state.out_stream.last_seq - last_seqno,
+ state.in_stream.err_ts_counter - last_in_ts_err_cnt,
+ state.out_stream.err_ts_counter - last_out_ts_err_cnt);
+
+ printf("Stats: Jitter = %u, Transit = %d\n",
+ mgcp_state_calc_jitter(&state), state.stats_transit);
+
+ last_in_ts_err_cnt = state.in_stream.err_ts_counter;
+ last_out_ts_err_cnt = state.out_stream.err_ts_counter;
+ last_timestamp = state.out_stream.last_timestamp;
+ last_seqno = state.out_stream.last_seq;
+ }
+
+ force_monotonic_time_us = -1;
+}
+
+static void test_multilple_codec(void)
+{
+ struct mgcp_config *cfg;
+ struct mgcp_endpoint *endp;
+ struct msgb *inp, *resp;
+ struct in_addr addr;
+
+ printf("Testing multiple payload types\n");
+
+ cfg = mgcp_config_alloc();
+ cfg->trunk.number_endpoints = 64;
+ mgcp_endpoints_allocate(&cfg->trunk);
+ cfg->policy_cb = mgcp_test_policy_cb;
+ mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));
+
+ /* Allocate endpoint 1@mgw with two codecs */
+ last_endpoint = -1;
+ inp = create_msg(CRCX_MULT_1);
+ resp = mgcp_handle_message(cfg, inp);
+ msgb_free(inp);
+ msgb_free(resp);
+
+ OSMO_ASSERT(last_endpoint == 1);
+ endp = &cfg->trunk.endpoints[last_endpoint];
+ OSMO_ASSERT(endp->net_end.codec.payload_type == 18);
+ OSMO_ASSERT(endp->net_end.alt_codec.payload_type == 97);
+
+ /* Allocate 2@mgw with three codecs, last one ignored */
+ last_endpoint = -1;
+ inp = create_msg(CRCX_MULT_2);
+ resp = mgcp_handle_message(cfg, inp);
+ msgb_free(inp);
+ msgb_free(resp);
+
+ OSMO_ASSERT(last_endpoint == 2);
+ endp = &cfg->trunk.endpoints[last_endpoint];
+ OSMO_ASSERT(endp->net_end.codec.payload_type == 18);
+ OSMO_ASSERT(endp->net_end.alt_codec.payload_type == 97);
+
+ /* Allocate 3@mgw with no codecs, check for PT == -1 */
+ last_endpoint = -1;
+ inp = create_msg(CRCX_MULT_3);
+ resp = mgcp_handle_message(cfg, inp);
+ msgb_free(inp);
+ msgb_free(resp);
+
+ OSMO_ASSERT(last_endpoint == 3);
+ endp = &cfg->trunk.endpoints[last_endpoint];
+ OSMO_ASSERT(endp->net_end.codec.payload_type == -1);
+ OSMO_ASSERT(endp->net_end.alt_codec.payload_type == -1);
+
+ /* Allocate 4@mgw with a single codec */
+ last_endpoint = -1;
+ inp = create_msg(CRCX_MULT_4);
+ resp = mgcp_handle_message(cfg, inp);
+ msgb_free(inp);
+ msgb_free(resp);
+
+ OSMO_ASSERT(last_endpoint == 4);
+ endp = &cfg->trunk.endpoints[last_endpoint];
+ OSMO_ASSERT(endp->net_end.codec.payload_type == 18);
+ OSMO_ASSERT(endp->net_end.alt_codec.payload_type == -1);
+
+ /* Allocate 5@mgw at select GSM.. */
+ last_endpoint = -1;
+ inp = create_msg(CRCX_MULT_GSM_EXACT);
+ talloc_free(cfg->trunk.audio_name);
+ cfg->trunk.audio_name = "GSM/8000";
+ cfg->trunk.no_audio_transcoding = 1;
+ resp = mgcp_handle_message(cfg, inp);
+ msgb_free(inp);
+ msgb_free(resp);
+
+ OSMO_ASSERT(last_endpoint == 5);
+ endp = &cfg->trunk.endpoints[last_endpoint];
+ OSMO_ASSERT(endp->net_end.codec.payload_type == 3);
+ OSMO_ASSERT(endp->net_end.alt_codec.payload_type == -1);
+
+ inp = create_msg(MDCX_NAT_DUMMY);
+ last_endpoint = -1;
+ resp = mgcp_handle_message(cfg, inp);
+ msgb_free(inp);
+ msgb_free(resp);
+ OSMO_ASSERT(last_endpoint == 5);
+ endp = &cfg->trunk.endpoints[last_endpoint];
+ OSMO_ASSERT(endp->net_end.codec.payload_type == 3);
+ OSMO_ASSERT(endp->net_end.alt_codec.payload_type == -1);
+ OSMO_ASSERT(endp->net_end.rtp_port == htons(16434));
+ memset(&addr, 0, sizeof(addr));
+ inet_aton("8.8.8.8", &addr);
+ OSMO_ASSERT(endp->net_end.addr.s_addr == addr.s_addr);
+
+ /* Check what happens without that flag */
+
+ /* Free the previous endpoint and the data ... */
+ mgcp_release_endp(endp);
+ talloc_free(endp->last_response);
+ talloc_free(endp->last_trans);
+ endp->last_response = endp->last_trans = NULL;
+
+ last_endpoint = -1;
+ inp = create_msg(CRCX_MULT_GSM_EXACT);
+ cfg->trunk.no_audio_transcoding = 0;
+ resp = mgcp_handle_message(cfg, inp);
+ msgb_free(inp);
+ msgb_free(resp);
+
+ OSMO_ASSERT(last_endpoint == 5);
+ endp = &cfg->trunk.endpoints[last_endpoint];
+ OSMO_ASSERT(endp->net_end.codec.payload_type == 255);
+ OSMO_ASSERT(endp->net_end.alt_codec.payload_type == 0);
+
+ talloc_free(cfg);
+}
+
+static void test_no_cycle(void)
+{
+ struct mgcp_config *cfg;
+ struct mgcp_endpoint *endp;
+
+ printf("Testing no sequence flow on initial packet\n");
+
+ cfg = mgcp_config_alloc();
+ cfg->trunk.number_endpoints = 64;
+ mgcp_endpoints_allocate(&cfg->trunk);
+
+ endp = &cfg->trunk.endpoints[1];
+ OSMO_ASSERT(endp->net_state.stats_initialized == 0);
+
+ mgcp_rtp_annex_count(endp, &endp->net_state, 0, 0, 2342);
+ OSMO_ASSERT(endp->net_state.stats_initialized == 1);
+ OSMO_ASSERT(endp->net_state.stats_cycles == 0);
+ OSMO_ASSERT(endp->net_state.stats_max_seq == 0);
+
+ mgcp_rtp_annex_count(endp, &endp->net_state, 1, 0, 2342);
+ OSMO_ASSERT(endp->net_state.stats_initialized == 1);
+ OSMO_ASSERT(endp->net_state.stats_cycles == 0);
+ OSMO_ASSERT(endp->net_state.stats_max_seq == 1);
+
+ /* now jump.. */
+ mgcp_rtp_annex_count(endp, &endp->net_state, UINT16_MAX, 0, 2342);
+ OSMO_ASSERT(endp->net_state.stats_initialized == 1);
+ OSMO_ASSERT(endp->net_state.stats_cycles == 0);
+ OSMO_ASSERT(endp->net_state.stats_max_seq == UINT16_MAX);
+
+ /* and wrap */
+ mgcp_rtp_annex_count(endp, &endp->net_state, 0, 0, 2342);
+ OSMO_ASSERT(endp->net_state.stats_initialized == 1);
+ OSMO_ASSERT(endp->net_state.stats_cycles == UINT16_MAX + 1);
+ OSMO_ASSERT(endp->net_state.stats_max_seq == 0);
+
+ talloc_free(cfg);
+}
+
+static void test_no_name(void)
+{
+ struct mgcp_config *cfg;
+ struct mgcp_endpoint *endp;
+ struct msgb *inp, *msg;
+ int i;
+
+ printf("Testing no rtpmap name\n");
+ cfg = mgcp_config_alloc();
+
+ cfg->trunk.number_endpoints = 64;
+ cfg->trunk.audio_send_name = 0;
+ mgcp_endpoints_allocate(&cfg->trunk);
+
+ cfg->policy_cb = mgcp_test_policy_cb;
+
+ mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));
+
+ /* reset endpoints */
+ for (i = 0; i < cfg->trunk.number_endpoints; i++) {
+ endp = &cfg->trunk.endpoints[i];
+ endp->net_end.codec.payload_type = PTYPE_NONE;
+ endp->net_end.packet_duration_ms = -1;
+
+ OSMO_ASSERT(endp->conn_mode == MGCP_CONN_NONE);
+ endp->conn_mode |= CONN_UNMODIFIED;
+ }
+
+ inp = create_msg(CRCX);
+ msg = mgcp_handle_message(cfg, inp);
+ if (strcmp((char *) msg->data, CRCX_RET_NO_RTPMAP) != 0)
+ printf("FAILED: there should not be a RTPMAP: %s\n",
+ (char *) msg->data);
+ msgb_free(inp);
+ msgb_free(msg);
+
+ mgcp_release_endp(&cfg->trunk.endpoints[1]);
+ talloc_free(cfg);
+}
+
+static void test_osmux_cid(void)
+{
+ int id, i;
+
+ OSMO_ASSERT(osmux_used_cid() == 0);
+ id = osmux_get_cid();
+ OSMO_ASSERT(id == 0);
+ OSMO_ASSERT(osmux_used_cid() == 1);
+ osmux_put_cid(id);
+ OSMO_ASSERT(osmux_used_cid() == 0);
+
+ for (i = 0; i < 256; ++i) {
+ id = osmux_get_cid();
+ OSMO_ASSERT(id == i);
+ OSMO_ASSERT(osmux_used_cid() == i + 1);
+ }
+
+ id = osmux_get_cid();
+ OSMO_ASSERT(id == -1);
+
+ for (i = 0; i < 256; ++i)
+ osmux_put_cid(i);
+ OSMO_ASSERT(osmux_used_cid() == 0);
+}
+
+static const struct log_info_cat log_categories[] = {
+};
+
+const struct log_info log_info = {
+ .cat = log_categories,
+ .num_cat = ARRAY_SIZE(log_categories),
+};
+
+int main(int argc, char **argv)
+{
+ msgb_talloc_ctx_init(NULL, 0);
+ osmo_init_logging(&log_info);
+
+ test_strline();
+ test_values();
+ test_messages();
+ test_retransmission();
+ test_packet_loss_calc();
+ test_rqnt_cb();
+ test_mgcp_stats();
+ test_packet_error_detection(1, 0);
+ test_packet_error_detection(0, 0);
+ test_packet_error_detection(0, 1);
+ test_packet_error_detection(1, 1);
+ test_multilple_codec();
+ test_no_cycle();
+ test_no_name();
+ test_osmux_cid();
+
+ printf("Done\n");
+ return EXIT_SUCCESS;
+}
diff --git a/tests/legacy_mgcp/mgcp_test.ok b/tests/legacy_mgcp/mgcp_test.ok
new file mode 100644
index 0000000..4e27282
--- /dev/null
+++ b/tests/legacy_mgcp/mgcp_test.ok
@@ -0,0 +1,480 @@
+line: 'one CR'
+line: 'two CR'
+line: ''
+line: 'one CRLF'
+line: 'two CRLF'
+line: ''
+line: 'one LF'
+line: 'two LF'
+line: ''
+line: 'mixed (4 lines)'
+line: ''
+line: ''
+line: ''
+Testing AUEP1
+Testing AUEP2
+Testing MDCX1
+Testing MDCX2
+Testing CRCX
+Dummy packets: 1
+Detected packet duration: 40
+Requested packetetization period: 20-20
+Connection mode: 1: RECV
+Testing MDCX3
+Dummy packets: 1
+Packet duration not set
+Requested packetization period not set
+Connection mode not set
+Testing MDCX4
+Dummy packets: 1
+Detected packet duration: 40
+Requested packetetization period: 20-20
+Connection mode: 3: SEND RECV
+Testing MDCX4_PT1
+Dummy packets: 1
+Detected packet duration: 40
+Requested packetetization period: 20-40
+Connection mode: 3: SEND RECV
+Testing MDCX4_PT2
+Dummy packets: 1
+Detected packet duration: 40
+Requested packetetization period: 20-20
+Connection mode: 3: SEND RECV
+Testing MDCX4_PT3
+Dummy packets: 1
+Detected packet duration: 40
+Requested packetization period not set
+Connection mode: 3: SEND RECV
+Testing MDCX4_SO
+Detected packet duration: 40
+Requested packetetization period: 20-20
+Connection mode: 2: SEND
+Testing MDCX4_RO
+Dummy packets: 1
+Packet duration not set
+Requested packetetization period: 20-20
+Connection mode: 1: RECV
+Testing DLCX
+Detected packet duration: 20
+Requested packetization period not set
+Connection mode: 0: NONE
+Testing CRCX_ZYN
+Dummy packets: 1
+Packet duration not set
+Requested packetization period not set
+Connection mode: 1: RECV
+Testing EMPTY
+Testing SHORT1
+Testing SHORT2
+Testing SHORT3
+Testing SHORT4
+Testing RQNT1
+Testing RQNT2
+Testing DLCX
+Detected packet duration: 20
+Requested packetization period not set
+Connection mode: 0: NONE
+Testing CRCX
+Dummy packets: 1
+Detected packet duration: 40
+Requested packetetization period: 20-20
+Connection mode: 1: RECV
+Testing MDCX3
+Dummy packets: 1
+Packet duration not set
+Requested packetization period not set
+Connection mode not set
+Testing DLCX
+Detected packet duration: 20
+Requested packetization period not set
+Connection mode: 0: NONE
+Testing CRCX
+Re-transmitting CRCX
+Testing RQNT1
+Re-transmitting RQNT1
+Testing RQNT2
+Re-transmitting RQNT2
+Testing MDCX3
+Re-transmitting MDCX3
+Testing DLCX
+Re-transmitting DLCX
+Testing packet loss calculation.
+Testing stat parsing
+Parsing result: 0
+Parsing result: 0
+Testing packet error detection, patch SSRC.
+Output SSRC changed to 11223344
+In TS: 0, dTS: 0, Seq: 0
+Out TS change: 0, dTS: 0, Seq change: 0, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 160, dTS: 160, Seq: 1
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 320, dTS: 160, Seq: 2
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 320, dTS: 160, Seq: 3
+Out TS change: 0, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 10, Transit = 160
+In TS: 480, dTS: 160, Seq: 4
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 9, Transit = 160
+In TS: 640, dTS: 160, Seq: 5
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 8, Transit = 160
+In TS: 960, dTS: 320, Seq: 6
+Out TS change: 320, dTS: 320, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 18, Transit = 0
+In TS: 1120, dTS: 160, Seq: 7
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 17, Transit = 0
+In TS: 1280, dTS: 160, Seq: 8
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 16, Transit = 0
+In TS: 1400, dTS: 120, Seq: 9
+Out TS change: 120, dTS: 120, Seq change: 1, TS Err change: in +1, out +1
+Stats: Jitter = 17, Transit = 40
+In TS: 1560, dTS: 160, Seq: 10
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 16, Transit = 40
+In TS: 1720, dTS: 160, Seq: 11
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 15, Transit = 40
+In TS: 34688, dTS: 0, Seq: 12
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 34848, dTS: 160, Seq: 13
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 35008, dTS: 160, Seq: 14
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 35128, dTS: 120, Seq: 15
+Out TS change: 120, dTS: 120, Seq change: 1, TS Err change: in +1, out +1
+Stats: Jitter = 2, Transit = -32728
+In TS: 35288, dTS: 160, Seq: 16
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35448, dTS: 160, Seq: 17
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35768, dTS: 160, Seq: 19
+Out TS change: 320, dTS: 160, Seq change: 2, TS Err change: in +0, out +0
+Stats: Jitter = 12, Transit = -32888
+In TS: 35928, dTS: 160, Seq: 20
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 11, Transit = -32888
+In TS: 36088, dTS: 160, Seq: 21
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 20, Transit = -33048
+In TS: 36088, dTS: 160, Seq: 21
+Out TS change: 0, dTS: 160, Seq change: 0, TS Err change: in +0, out +0
+Stats: Jitter = 29, Transit = -32888
+In TS: 36248, dTS: 160, Seq: 22
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 27, Transit = -32888
+In TS: 36408, dTS: 160, Seq: 23
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 25, Transit = -32888
+In TS: 36568, dTS: 160, Seq: 23
+Out TS change: 160, dTS: 160, Seq change: 0, TS Err change: in +1, out +1
+Stats: Jitter = 24, Transit = -32888
+In TS: 36728, dTS: 160, Seq: 24
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 22, Transit = -32888
+In TS: 36888, dTS: 160, Seq: 25
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 21, Transit = -32888
+In TS: 160000, dTS: 0, Seq: 1000
+Out TS change: 12000, dTS: 12000, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+In TS: 160160, dTS: 160, Seq: 1001
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+In TS: 160320, dTS: 160, Seq: 1002
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+Testing packet error detection.
+Output SSRC changed to 11223344
+In TS: 0, dTS: 0, Seq: 0
+Out TS change: 0, dTS: 0, Seq change: 0, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 160, dTS: 160, Seq: 1
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 320, dTS: 160, Seq: 2
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 320, dTS: 160, Seq: 3
+Out TS change: 0, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 10, Transit = 160
+In TS: 480, dTS: 160, Seq: 4
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 9, Transit = 160
+In TS: 640, dTS: 160, Seq: 5
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 8, Transit = 160
+In TS: 960, dTS: 320, Seq: 6
+Out TS change: 320, dTS: 320, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 18, Transit = 0
+In TS: 1120, dTS: 160, Seq: 7
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 17, Transit = 0
+In TS: 1280, dTS: 160, Seq: 8
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 16, Transit = 0
+In TS: 1400, dTS: 120, Seq: 9
+Out TS change: 120, dTS: 120, Seq change: 1, TS Err change: in +1, out +1
+Stats: Jitter = 17, Transit = 40
+In TS: 1560, dTS: 160, Seq: 10
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 16, Transit = 40
+In TS: 1720, dTS: 160, Seq: 11
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 15, Transit = 40
+Output SSRC changed to 10203040
+In TS: 34688, dTS: 0, Seq: 12
+Out TS change: 32968, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 34848, dTS: 160, Seq: 13
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 35008, dTS: 160, Seq: 14
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 35128, dTS: 120, Seq: 15
+Out TS change: 120, dTS: 120, Seq change: 1, TS Err change: in +1, out +1
+Stats: Jitter = 2, Transit = -32728
+In TS: 35288, dTS: 160, Seq: 16
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35448, dTS: 160, Seq: 17
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35768, dTS: 160, Seq: 19
+Out TS change: 320, dTS: 160, Seq change: 2, TS Err change: in +0, out +0
+Stats: Jitter = 12, Transit = -32888
+In TS: 35928, dTS: 160, Seq: 20
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 11, Transit = -32888
+In TS: 36088, dTS: 160, Seq: 21
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 20, Transit = -33048
+In TS: 36088, dTS: 160, Seq: 21
+Out TS change: 0, dTS: 160, Seq change: 0, TS Err change: in +0, out +0
+Stats: Jitter = 29, Transit = -32888
+In TS: 36248, dTS: 160, Seq: 22
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 27, Transit = -32888
+In TS: 36408, dTS: 160, Seq: 23
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 25, Transit = -32888
+In TS: 36568, dTS: 160, Seq: 23
+Out TS change: 160, dTS: 160, Seq change: 0, TS Err change: in +1, out +1
+Stats: Jitter = 24, Transit = -32888
+In TS: 36728, dTS: 160, Seq: 24
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 22, Transit = -32888
+In TS: 36888, dTS: 160, Seq: 25
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 21, Transit = -32888
+Output SSRC changed to 50607080
+In TS: 160000, dTS: 0, Seq: 1000
+Out TS change: 123112, dTS: 160, Seq change: 975, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+In TS: 160160, dTS: 160, Seq: 1001
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+In TS: 160320, dTS: 160, Seq: 1002
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+Testing packet error detection, patch timestamps.
+Output SSRC changed to 11223344
+In TS: 0, dTS: 0, Seq: 0
+Out TS change: 0, dTS: 0, Seq change: 0, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 160, dTS: 160, Seq: 1
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 320, dTS: 160, Seq: 2
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 320, dTS: 160, Seq: 3
+Out TS change: 0, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 10, Transit = 160
+In TS: 480, dTS: 160, Seq: 4
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 9, Transit = 160
+In TS: 640, dTS: 160, Seq: 5
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 8, Transit = 160
+In TS: 960, dTS: 320, Seq: 6
+Out TS change: 320, dTS: 320, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 18, Transit = 0
+In TS: 1120, dTS: 160, Seq: 7
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 17, Transit = 0
+In TS: 1280, dTS: 160, Seq: 8
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 16, Transit = 0
+In TS: 1400, dTS: 120, Seq: 9
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +1, out +0
+Stats: Jitter = 17, Transit = 40
+In TS: 1560, dTS: 160, Seq: 10
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 16, Transit = 40
+In TS: 1720, dTS: 160, Seq: 11
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 15, Transit = 40
+Output SSRC changed to 10203040
+In TS: 34688, dTS: 0, Seq: 12
+Out TS change: 32968, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 34848, dTS: 160, Seq: 13
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 35008, dTS: 160, Seq: 14
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 35128, dTS: 120, Seq: 15
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +1, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35288, dTS: 160, Seq: 16
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35448, dTS: 160, Seq: 17
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35768, dTS: 160, Seq: 19
+Out TS change: 320, dTS: 160, Seq change: 2, TS Err change: in +0, out +0
+Stats: Jitter = 12, Transit = -32888
+In TS: 35928, dTS: 160, Seq: 20
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 11, Transit = -32888
+In TS: 36088, dTS: 160, Seq: 21
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 20, Transit = -33048
+In TS: 36088, dTS: 160, Seq: 21
+Out TS change: 0, dTS: 160, Seq change: 0, TS Err change: in +0, out +0
+Stats: Jitter = 29, Transit = -32888
+In TS: 36248, dTS: 160, Seq: 22
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 27, Transit = -32888
+In TS: 36408, dTS: 160, Seq: 23
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 25, Transit = -32888
+In TS: 36568, dTS: 160, Seq: 23
+Out TS change: 160, dTS: 160, Seq change: 0, TS Err change: in +1, out +1
+Stats: Jitter = 24, Transit = -32888
+In TS: 36728, dTS: 160, Seq: 24
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 22, Transit = -32888
+In TS: 36888, dTS: 160, Seq: 25
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 21, Transit = -32888
+Output SSRC changed to 50607080
+In TS: 160000, dTS: 0, Seq: 1000
+Out TS change: 123112, dTS: 160, Seq change: 975, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+In TS: 160160, dTS: 160, Seq: 1001
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+In TS: 160320, dTS: 160, Seq: 1002
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+Testing packet error detection, patch SSRC, patch timestamps.
+Output SSRC changed to 11223344
+In TS: 0, dTS: 0, Seq: 0
+Out TS change: 0, dTS: 0, Seq change: 0, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 160, dTS: 160, Seq: 1
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 320, dTS: 160, Seq: 2
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 320, dTS: 160, Seq: 3
+Out TS change: 0, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 10, Transit = 160
+In TS: 480, dTS: 160, Seq: 4
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 9, Transit = 160
+In TS: 640, dTS: 160, Seq: 5
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 8, Transit = 160
+In TS: 960, dTS: 320, Seq: 6
+Out TS change: 320, dTS: 320, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 18, Transit = 0
+In TS: 1120, dTS: 160, Seq: 7
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 17, Transit = 0
+In TS: 1280, dTS: 160, Seq: 8
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 16, Transit = 0
+In TS: 1400, dTS: 120, Seq: 9
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +1, out +0
+Stats: Jitter = 17, Transit = 40
+In TS: 1560, dTS: 160, Seq: 10
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 16, Transit = 40
+In TS: 1720, dTS: 160, Seq: 11
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 15, Transit = 40
+In TS: 34688, dTS: 0, Seq: 12
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 34848, dTS: 160, Seq: 13
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 35008, dTS: 160, Seq: 14
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 35128, dTS: 120, Seq: 15
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +1, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35288, dTS: 160, Seq: 16
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35448, dTS: 160, Seq: 17
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35768, dTS: 160, Seq: 19
+Out TS change: 320, dTS: 160, Seq change: 2, TS Err change: in +0, out +0
+Stats: Jitter = 12, Transit = -32888
+In TS: 35928, dTS: 160, Seq: 20
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 11, Transit = -32888
+In TS: 36088, dTS: 160, Seq: 21
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 20, Transit = -33048
+In TS: 36088, dTS: 160, Seq: 21
+Out TS change: 0, dTS: 160, Seq change: 0, TS Err change: in +0, out +0
+Stats: Jitter = 29, Transit = -32888
+In TS: 36248, dTS: 160, Seq: 22
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 27, Transit = -32888
+In TS: 36408, dTS: 160, Seq: 23
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 25, Transit = -32888
+In TS: 36568, dTS: 160, Seq: 23
+Out TS change: 160, dTS: 160, Seq change: 0, TS Err change: in +1, out +1
+Stats: Jitter = 24, Transit = -32888
+In TS: 36728, dTS: 160, Seq: 24
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 22, Transit = -32888
+In TS: 36888, dTS: 160, Seq: 25
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 21, Transit = -32888
+In TS: 160000, dTS: 0, Seq: 1000
+Out TS change: 12000, dTS: 12000, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+In TS: 160160, dTS: 160, Seq: 1001
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+In TS: 160320, dTS: 160, Seq: 1002
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+Testing multiple payload types
+Testing no sequence flow on initial packet
+Testing no rtpmap name
+Done
diff --git a/tests/legacy_mgcp/mgcp_transcoding_test.c b/tests/legacy_mgcp/mgcp_transcoding_test.c
new file mode 100644
index 0000000..61de25f
--- /dev/null
+++ b/tests/legacy_mgcp/mgcp_transcoding_test.c
@@ -0,0 +1,661 @@
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <err.h>
+#include <stdint.h>
+#include <errno.h>
+
+#include <osmocom/core/talloc.h>
+#include <osmocom/core/application.h>
+
+#include <osmocom/netif/rtp.h>
+
+#include <osmocom/legacy_mgcp/mgcp.h>
+#include <osmocom/legacy_mgcp/mgcp_internal.h>
+
+#include "bscconfig.h"
+#ifndef BUILD_MGCP_TRANSCODING
+#error "Requires MGCP transcoding enabled (see --enable-mgcp-transcoding)"
+#endif
+
+#include <osmocom/legacy_mgcp/mgcp_transcode.h>
+
+uint8_t *audio_frame_l16[] = {
+};
+
+struct rtp_packets {
+ float t;
+ int len;
+ char *data;
+};
+
+struct rtp_packets audio_packets_l16[] = {
+ /* RTP: SeqNo=1, TS=160 */
+ {0.020000, 332,
+ "\x80\x0B\x00\x01\x00\x00\x00\xA0\x11\x22\x33\x44"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ "\x00\x00\x40\x13\x5A\x9E\x40\x13\x00\x00\xBF\xED\xA5\x62\xBF\xED"
+ },
+};
+
+struct rtp_packets audio_packets_gsm[] = {
+ /* RTP: SeqNo=1, TS=160 */
+ {0.020000, 45,
+ "\x80\x03\x00\x01\x00\x00\x00\xA0\x11\x22\x33\x44"
+ "\xD4\x7C\xE3\xE9\x62\x50\x39\xF0\xF8\xB4\x68\xEA\x6C\x0E\x81\x1B"
+ "\x56\x2A\xD5\xBC\x69\x9C\xD1\xF0\x66\x7A\xEC\x49\x7A\x33\x3D\x0A"
+ "\xDE"
+ },
+};
+
+struct rtp_packets audio_packets_gsm_invalid_size[] = {
+ /* RTP: SeqNo=1, TS=160 */
+ {0.020000, 41,
+ "\x80\x03\x00\x01\x00\x00\x00\xA0\x11\x22\x33\x44"
+ "\xD4\x7C\xE3\xE9\x62\x50\x39\xF0\xF8\xB4\x68\xEA\x6C\x0E\x81\x1B"
+ "\x56\x2A\xD5\xBC\x69\x9C\xD1\xF0\x66\x7A\xEC\x49\x7A\x33\x3D\x0A"
+ "\xDE"
+ },
+};
+
+struct rtp_packets audio_packets_gsm_invalid_data[] = {
+ /* RTP: SeqNo=1, TS=160 */
+ {0.020000, 45,
+ "\x80\x03\x00\x01\x00\x00\x00\xA0\x11\x22\x33\x44"
+ "\xEE\xEE\xEE\xEE\xEE\xEE\xEE\xEE\xEE\xEE\xEE\xEE\xEE\xEE\xEE\xEE"
+ "\xEE\xEE\xEE\xEE\xEE\xEE\xEE\xEE\xEE\xEE\xEE\xEE\xEE\xEE\xEE\xEE"
+ "\xEE"
+ },
+};
+
+struct rtp_packets audio_packets_gsm_invalid_ptype[] = {
+ /* RTP: SeqNo=1, TS=160 */
+ {0.020000, 45,
+ "\x80\x08\x00\x01\x00\x00\x00\xA0\x11\x22\x33\x44"
+ "\xD4\x7C\xE3\xE9\x62\x50\x39\xF0\xF8\xB4\x68\xEA\x6C\x0E\x81\x1B"
+ "\x56\x2A\xD5\xBC\x69\x9C\xD1\xF0\x66\x7A\xEC\x49\x7A\x33\x3D\x0A"
+ "\xDE"
+ },
+};
+
+struct rtp_packets audio_packets_g729[] = {
+ /* RTP: SeqNo=1, TS=160 */
+ {0.020000, 32,
+ "\x80\x12\x00\x01\x00\x00\x00\xA0\x11\x22\x33\x44"
+ "\xAF\xC2\x81\x40\x00\xFA\xCE\xA4\x21\x7C\xC5\xC3\x4F\xA5\x98\xF5"
+ "\xB2\x95\xC4\xAD"
+ },
+};
+
+struct rtp_packets audio_packets_pcma[] = {
+ /* RTP: SeqNo=1, TS=160 */
+ {0.020000, 172,
+ "\x80\x08\x00\x01\x00\x00\x00\xA0\x11\x22\x33\x44"
+ "\xD5\xA5\xA3\xA5\xD5\x25\x23\x25\xD5\xA5\xA3\xA5\xD5\x25\x23\x25"
+ "\xD5\xA5\xA3\xA5\xD5\x25\x23\x25\xD5\xA5\xA3\xA5\xD5\x25\x23\x25"
+ "\xD5\xA5\xA3\xA5\xD5\x25\x23\x25\xD5\xA5\xA3\xA5\xD5\x25\x23\x25"
+ "\xD5\xA5\xA3\xA5\xD5\x25\x23\x25\xD5\xA5\xA3\xA5\xD5\x25\x23\x25"
+ "\xD5\xA5\xA3\xA5\xD5\x25\x23\x25\xD5\xA5\xA3\xA5\xD5\x25\x23\x25"
+ "\xD5\xA5\xA3\xA5\xD5\x25\x23\x25\xD5\xA5\xA3\xA5\xD5\x25\x23\x25"
+ "\xD5\xA5\xA3\xA5\xD5\x25\x23\x25\xD5\xA5\xA3\xA5\xD5\x25\x23\x25"
+ "\xD5\xA5\xA3\xA5\xD5\x25\x23\x25\xD5\xA5\xA3\xA5\xD5\x25\x23\x25"
+ "\xD5\xA5\xA3\xA5\xD5\x25\x23\x25\xD5\xA5\xA3\xA5\xD5\x25\x23\x25"
+ "\xD5\xA5\xA3\xA5\xD5\x25\x23\x25\xD5\xA5\xA3\xA5\xD5\x25\x23\x25"
+ },
+ /* RTP: SeqNo=26527, TS=232640 */
+ {0.020000, 92,
+ "\x80\x08\x67\x9f\x00\x03\x8c\xc0\x04\xaa\x67\x9f\xd5\xd5\xd5\xd5"
+ "\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5"
+ "\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5"
+ "\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5\xd5"
+ "\xd5\xd5\xd5\xd5\xd5\xd5\x55\x55\xd5\xd5\x55\x55\xd5\xd5\x55\x55"
+ "\xd5\xd5\xd5\x55\x55\xd5\xd5\xd5\x55\x55\xd5\xd5"
+ },
+ /* RTP: SeqNo=26528, TS=232720 */
+ {0.020000, 92,
+ "\x80\x08\x67\xa0\x00\x03\x8d\x10\x04\xaa\x67\x9f\x55\xd5\xd5\x55"
+ "\xd5\x55\xd5\xd5\xd5\x55\xd5\x55\xd5\xd5\x55\xd5\x55\xd5\x55\xd5"
+ "\x55\x55\xd5\x55\xd5\xd5\x55\x55\x55\x55\x55\xd5\xd5\x55\xd5\xd5"
+ "\xd5\x55\xd5\xd5\xd5\x55\x54\x55\xd5\xd5\x55\xd5\xd5\xd5\xd5\x55"
+ "\x54\x55\xd5\x55\xd5\x55\x55\x55\x55\x55\xd5\xd5\xd5\xd5\xd5\xd4"
+ "\xd5\x54\x55\xd5\xd4\xd5\x54\xd5\x55\xd5\xd5\xd5"
+ },
+};
+
+
+
+static int audio_name_to_type(const char *name)
+{
+ if (!strcasecmp(name, "gsm"))
+ return 3;
+#ifdef HAVE_BCG729
+ else if (!strcasecmp(name, "g729"))
+ return 18;
+#endif
+ else if (!strcasecmp(name, "pcma"))
+ return 8;
+ else if (!strcasecmp(name, "l16"))
+ return 11;
+ return -1;
+}
+
+int mgcp_get_trans_frame_size(void *state_, int nsamples, int dst);
+
+static int given_configured_endpoint(int in_samples, int out_samples,
+ const char *srcfmt, const char *dstfmt,
+ void **out_ctx, struct mgcp_endpoint **out_endp)
+{
+ int rc;
+ struct mgcp_rtp_end *dst_end;
+ struct mgcp_rtp_end *src_end;
+ struct mgcp_config *cfg;
+ struct mgcp_trunk_config *tcfg;
+ struct mgcp_endpoint *endp;
+
+ cfg = mgcp_config_alloc();
+ tcfg = talloc_zero(cfg, struct mgcp_trunk_config);
+ endp = talloc_zero(tcfg, struct mgcp_endpoint);
+
+ cfg->setup_rtp_processing_cb = mgcp_transcoding_setup;
+ cfg->rtp_processing_cb = mgcp_transcoding_process_rtp;
+ cfg->get_net_downlink_format_cb = mgcp_transcoding_net_downlink_format;
+
+ tcfg->endpoints = endp;
+ tcfg->number_endpoints = 1;
+ tcfg->cfg = cfg;
+ endp->tcfg = tcfg;
+ endp->cfg = cfg;
+ mgcp_initialize_endp(endp);
+
+ dst_end = &endp->bts_end;
+ dst_end->codec.payload_type = audio_name_to_type(dstfmt);
+
+ src_end = &endp->net_end;
+ src_end->codec.payload_type = audio_name_to_type(srcfmt);
+
+ if (out_samples) {
+ dst_end->codec.frame_duration_den = dst_end->codec.rate;
+ dst_end->codec.frame_duration_num = out_samples;
+ dst_end->frames_per_packet = 1;
+ dst_end->force_output_ptime = 1;
+ }
+
+ rc = mgcp_transcoding_setup(endp, dst_end, src_end);
+ if (rc < 0) {
+ printf("setup failed: %s", strerror(-rc));
+ abort();
+ }
+
+ *out_ctx = cfg;
+ *out_endp = endp;
+ return 0;
+}
+
+
+static int transcode_test(const char *srcfmt, const char *dstfmt,
+ uint8_t *src_pkts, size_t src_pkt_size)
+{
+ char buf[4096] = {0x80, 0};
+ void *ctx;
+
+ struct mgcp_rtp_end *dst_end;
+ struct mgcp_process_rtp_state *state;
+ struct mgcp_endpoint *endp;
+ int in_size;
+ const int in_samples = 160;
+ int len, cont;
+
+ printf("== Transcoding test ==\n");
+ printf("converting %s -> %s\n", srcfmt, dstfmt);
+
+ given_configured_endpoint(in_samples, 0, srcfmt, dstfmt, &ctx, &endp);
+
+ dst_end = &endp->bts_end;
+ state = dst_end->rtp_process_data;
+ OSMO_ASSERT(state != NULL);
+
+ in_size = mgcp_transcoding_get_frame_size(state, in_samples, 0);
+ OSMO_ASSERT(sizeof(buf) >= in_size + 12);
+
+ memcpy(buf, src_pkts, src_pkt_size);
+
+ len = src_pkt_size;
+
+ cont = mgcp_transcoding_process_rtp(endp, dst_end,
+ buf, &len, sizeof(buf));
+ if (cont < 0) {
+ printf("Nothing encoded due: %s\n", strerror(-cont));
+ talloc_free(ctx);
+ return -1;
+ }
+
+ if (len < 24) {
+ printf("encoded: %s\n", osmo_hexdump((unsigned char *)buf, len));
+ } else {
+ const char *str = osmo_hexdump((unsigned char *)buf, len);
+ int i = 0;
+ const int prefix = 4;
+ const int cutlen = 48;
+ int nchars = 0;
+
+ printf("encoded:\n");
+ do {
+ nchars = printf("%*s%-.*s", prefix, "", cutlen, str + i);
+ i += nchars - prefix;
+ printf("\n");
+ } while (nchars - prefix >= cutlen);
+ }
+ printf("counted: %d\n", cont);
+ talloc_free(ctx);
+ return 0;
+}
+
+static void test_rtp_seq_state(void)
+{
+ char buf[4096];
+ int len;
+ int cont;
+ void *ctx;
+ struct mgcp_endpoint *endp;
+ struct mgcp_process_rtp_state *state;
+ struct rtp_hdr *hdr;
+ uint32_t ts_no;
+ uint16_t seq_no;
+
+ given_configured_endpoint(160, 0, "pcma", "l16", &ctx, &endp);
+ state = endp->bts_end.rtp_process_data;
+ OSMO_ASSERT(!state->is_running);
+ OSMO_ASSERT(state->next_seq == 0);
+ OSMO_ASSERT(state->next_time == 0);
+
+ /* initialize packet */
+ len = audio_packets_pcma[0].len;
+ memcpy(buf, audio_packets_pcma[0].data, len);
+ cont = mgcp_transcoding_process_rtp(endp, &endp->bts_end, buf, &len, len);
+ OSMO_ASSERT(cont >= 0);
+ OSMO_ASSERT(state->is_running);
+ OSMO_ASSERT(state->next_seq == 2);
+ OSMO_ASSERT(state->next_time == 240);
+
+ /* verify that the right timestamp was written */
+ OSMO_ASSERT(len == audio_packets_pcma[0].len);
+ hdr = (struct rtp_hdr *) &buf[0];
+
+ memcpy(&ts_no, &hdr->timestamp, sizeof(ts_no));
+ OSMO_ASSERT(htonl(ts_no) == 160);
+ memcpy(&seq_no, &hdr->sequence, sizeof(seq_no));
+ OSMO_ASSERT(htons(seq_no) == 1);
+ /* Check the right sequence number is written */
+ state->next_seq = 1234;
+ len = audio_packets_pcma[0].len;
+ memcpy(buf, audio_packets_pcma[0].data, len);
+ cont = mgcp_transcoding_process_rtp(endp, &endp->bts_end, buf, &len, len);
+ OSMO_ASSERT(cont >= 0);
+ OSMO_ASSERT(len == audio_packets_pcma[0].len);
+ hdr = (struct rtp_hdr *) &buf[0];
+
+ memcpy(&seq_no, &hdr->sequence, sizeof(seq_no));
+ OSMO_ASSERT(htons(seq_no) == 1234);
+
+ talloc_free(ctx);
+}
+
+static void test_transcode_result(void)
+{
+ char buf[4096];
+ int len, res;
+ void *ctx;
+ struct mgcp_endpoint *endp;
+ struct mgcp_process_rtp_state *state;
+
+ {
+ /* from GSM to PCMA and same ptime */
+ given_configured_endpoint(160, 0, "gsm", "pcma", &ctx, &endp);
+ state = endp->bts_end.rtp_process_data;
+
+ /* result */
+ len = audio_packets_gsm[0].len;
+ memcpy(buf, audio_packets_gsm[0].data, len);
+ res = mgcp_transcoding_process_rtp(endp, &endp->bts_end, buf, &len, ARRAY_SIZE(buf));
+ OSMO_ASSERT(res == sizeof(struct rtp_hdr));
+ OSMO_ASSERT(state->sample_cnt == 0);
+
+ len = res;
+ res = mgcp_transcoding_process_rtp(endp, &endp->bts_end, buf, &len, ARRAY_SIZE(buf));
+ OSMO_ASSERT(res == -ENOMSG);
+
+ talloc_free(ctx);
+ }
+
+ {
+ /* from GSM to PCMA and same ptime */
+ given_configured_endpoint(160, 160, "gsm", "pcma", &ctx, &endp);
+ state = endp->bts_end.rtp_process_data;
+
+ /* result */
+ len = audio_packets_gsm[0].len;
+ memcpy(buf, audio_packets_gsm[0].data, len);
+ res = mgcp_transcoding_process_rtp(endp, &endp->bts_end, buf, &len, ARRAY_SIZE(buf));
+ OSMO_ASSERT(res == sizeof(struct rtp_hdr));
+ OSMO_ASSERT(state->sample_cnt == 0);
+
+ len = res;
+ res = mgcp_transcoding_process_rtp(endp, &endp->bts_end, buf, &len, ARRAY_SIZE(buf));
+ OSMO_ASSERT(res == -EAGAIN);
+
+ talloc_free(ctx);
+ }
+
+ {
+ /* from PCMA to GSM and wrong different ptime */
+ given_configured_endpoint(80, 160, "pcma", "gsm", &ctx, &endp);
+ state = endp->bts_end.rtp_process_data;
+
+ /* Add the first sample */
+ len = audio_packets_pcma[1].len;
+ memcpy(buf, audio_packets_pcma[1].data, len);
+ res = mgcp_transcoding_process_rtp(endp, &endp->bts_end, buf, &len, ARRAY_SIZE(buf));
+ OSMO_ASSERT(state->sample_cnt == 80);
+ OSMO_ASSERT(state->next_time == 232640);
+ OSMO_ASSERT(res < 0);
+
+ /* Add the second sample and it should be consumable */
+ len = audio_packets_pcma[2].len;
+ memcpy(buf, audio_packets_pcma[2].data, len);
+ res = mgcp_transcoding_process_rtp(endp, &endp->bts_end, buf, &len, ARRAY_SIZE(buf));
+ OSMO_ASSERT(state->sample_cnt == 0);
+ OSMO_ASSERT(state->next_time == 232640 + 80 + 160);
+ OSMO_ASSERT(res == sizeof(struct rtp_hdr));
+
+ talloc_free(ctx);
+ }
+
+ {
+ /* from PCMA to GSM with a big time jump */
+ struct rtp_hdr *hdr;
+ uint32_t ts;
+
+ given_configured_endpoint(80, 160, "pcma", "gsm", &ctx, &endp);
+ state = endp->bts_end.rtp_process_data;
+
+ /* Add the first sample */
+ len = audio_packets_pcma[1].len;
+ memcpy(buf, audio_packets_pcma[1].data, len);
+ res = mgcp_transcoding_process_rtp(endp, &endp->bts_end, buf, &len, ARRAY_SIZE(buf));
+ OSMO_ASSERT(state->sample_cnt == 80);
+ OSMO_ASSERT(state->next_time == 232640);
+ OSMO_ASSERT(state->next_seq == 26527);
+ OSMO_ASSERT(res < 0);
+
+ /* Add a skip to the packet to force a 'resync' */
+ len = audio_packets_pcma[2].len;
+ memcpy(buf, audio_packets_pcma[2].data, len);
+ hdr = (struct rtp_hdr *) &buf[0];
+ /* jump the time and add alignment error */
+ ts = ntohl(hdr->timestamp) + 123 * 80 + 2;
+ hdr->timestamp = htonl(ts);
+ res = mgcp_transcoding_process_rtp(endp, &endp->bts_end, buf, &len, ARRAY_SIZE(buf));
+ OSMO_ASSERT(res < 0);
+ OSMO_ASSERT(state->sample_cnt == 80);
+ OSMO_ASSERT(state->next_time == ts);
+ OSMO_ASSERT(state->next_seq == 26527);
+ /* TODO: this can create alignment errors */
+
+
+ /* Now attempt to consume 160 samples */
+ len = audio_packets_pcma[2].len;
+ memcpy(buf, audio_packets_pcma[2].data, len);
+ hdr = (struct rtp_hdr *) &buf[0];
+ ts += 80;
+ hdr->timestamp = htonl(ts);
+ res = mgcp_transcoding_process_rtp(endp, &endp->bts_end, buf, &len, ARRAY_SIZE(buf));
+ OSMO_ASSERT(res == 12);
+ OSMO_ASSERT(state->sample_cnt == 0);
+ OSMO_ASSERT(state->next_time == ts + 160);
+ OSMO_ASSERT(state->next_seq == 26528);
+
+ talloc_free(ctx);
+ }
+}
+
+static void test_transcode_change(void)
+{
+ char buf[4096] = {0x80, 0};
+ void *ctx;
+
+ struct mgcp_endpoint *endp;
+ struct mgcp_process_rtp_state *state;
+ struct rtp_hdr *hdr;
+
+ int len, res;
+
+ {
+ /* from GSM to PCMA and same ptime */
+ printf("Testing Initial L16->GSM, PCMA->GSM\n");
+ given_configured_endpoint(160, 0, "l16", "gsm", &ctx, &endp);
+ endp->net_end.alt_codec = endp->net_end.codec;
+ endp->net_end.alt_codec.payload_type = audio_name_to_type("pcma");
+ state = endp->bts_end.rtp_process_data;
+
+ /* initial transcoding work */
+ OSMO_ASSERT(state->src_fmt == AF_L16);
+ OSMO_ASSERT(state->dst_fmt == AF_GSM);
+ OSMO_ASSERT(endp->net_end.alt_codec.payload_type == 8);
+ OSMO_ASSERT(endp->net_end.codec.payload_type == 11);
+
+ /* result */
+ len = audio_packets_pcma[0].len;
+ memcpy(buf, audio_packets_pcma[0].data, len);
+ res = mgcp_transcoding_process_rtp(endp, &endp->bts_end, buf, &len, ARRAY_SIZE(buf));
+ state = endp->bts_end.rtp_process_data;
+ OSMO_ASSERT(res == sizeof(struct rtp_hdr));
+ OSMO_ASSERT(state->sample_cnt == 0);
+ OSMO_ASSERT(state->src_fmt == AF_PCMA);
+ OSMO_ASSERT(state->dst_fmt == AF_GSM);
+ OSMO_ASSERT(endp->net_end.alt_codec.payload_type == 11);
+ OSMO_ASSERT(endp->net_end.codec.payload_type == 8);
+
+ len = res;
+ res = mgcp_transcoding_process_rtp(endp, &endp->bts_end, buf, &len, ARRAY_SIZE(buf));
+ OSMO_ASSERT(res == -ENOMSG);
+ OSMO_ASSERT(state == endp->bts_end.rtp_process_data);
+
+
+ /* now check that comfort noise doesn't change anything */
+ len = audio_packets_pcma[1].len;
+ memcpy(buf, audio_packets_pcma[1].data, len);
+ hdr = (struct rtp_hdr *) buf;
+ hdr->payload_type = 12;
+ res = mgcp_transcoding_process_rtp(endp, &endp->bts_end, buf, &len, ARRAY_SIZE(buf));
+ OSMO_ASSERT(state == endp->bts_end.rtp_process_data);
+ OSMO_ASSERT(state->sample_cnt == 80);
+ OSMO_ASSERT(state->src_fmt == AF_PCMA);
+ OSMO_ASSERT(state->dst_fmt == AF_GSM);
+ OSMO_ASSERT(endp->net_end.alt_codec.payload_type == 11);
+ OSMO_ASSERT(endp->net_end.codec.payload_type == 8);
+
+ talloc_free(ctx);
+ }
+}
+
+static int test_repacking(int in_samples, int out_samples, int no_transcode)
+{
+ char buf[4096] = {0x80, 0};
+ int cc;
+ struct mgcp_endpoint *endp;
+ void *ctx;
+
+ struct mgcp_process_rtp_state *state;
+ int in_cnt;
+ int out_size;
+ int in_size;
+ uint32_t ts = 0;
+ uint16_t seq = 0;
+ const char *srcfmt = "pcma";
+ const char *dstfmt = no_transcode ? "pcma" : "l16";
+
+ printf("== Transcoding test ==\n");
+ printf("converting %s -> %s\n", srcfmt, dstfmt);
+
+ given_configured_endpoint(in_samples, out_samples, srcfmt, dstfmt, &ctx, &endp);
+
+ state = endp->bts_end.rtp_process_data;
+ OSMO_ASSERT(state != NULL);
+
+ in_size = mgcp_transcoding_get_frame_size(state, in_samples, 0);
+ OSMO_ASSERT(sizeof(buf) >= in_size + 12);
+
+ out_size = mgcp_transcoding_get_frame_size(state, -1, 1);
+ OSMO_ASSERT(sizeof(buf) >= out_size + 12);
+
+ buf[1] = endp->net_end.codec.payload_type;
+ *(uint16_t*)(buf+2) = htons(1);
+ *(uint32_t*)(buf+4) = htonl(0);
+ *(uint32_t*)(buf+8) = htonl(0xaabbccdd);
+
+ for (in_cnt = 0; in_cnt < 16; in_cnt++) {
+ int cont;
+ int len;
+
+ /* fake PCMA data */
+ printf("generating %d %s input samples\n", in_samples, srcfmt);
+ for (cc = 0; cc < in_samples; cc++)
+ buf[12+cc] = cc;
+
+ *(uint16_t*)(buf+2) = htonl(seq);
+ *(uint32_t*)(buf+4) = htonl(ts);
+
+ seq += 1;
+ ts += in_samples;
+
+ cc += 12; /* include RTP header */
+
+ len = cc;
+
+ do {
+ cont = mgcp_transcoding_process_rtp(endp, &endp->bts_end,
+ buf, &len, sizeof(buf));
+ if (cont == -EAGAIN) {
+ fprintf(stderr, "Got EAGAIN\n");
+ break;
+ }
+
+ if (cont < 0) {
+ printf("processing failed: %s", strerror(-cont));
+ abort();
+ }
+
+ len -= 12; /* ignore RTP header */
+
+ printf("got %d %s output frames (%d octets) count=%d\n",
+ len / out_size, dstfmt, len, cont);
+
+ len = cont;
+ } while (len > 0);
+ }
+
+ talloc_free(ctx);
+ return 0;
+}
+
+static const struct log_info_cat log_categories[] = {
+};
+
+const struct log_info log_info = {
+ .cat = log_categories,
+ .num_cat = ARRAY_SIZE(log_categories),
+};
+
+int main(int argc, char **argv)
+{
+ int rc;
+ osmo_init_logging(&log_info);
+
+ printf("=== Transcoding Good Cases ===\n");
+
+ transcode_test("l16", "l16",
+ (uint8_t *)audio_packets_l16[0].data,
+ audio_packets_l16[0].len);
+ transcode_test("l16", "gsm",
+ (uint8_t *)audio_packets_l16[0].data,
+ audio_packets_l16[0].len);
+ transcode_test("l16", "pcma",
+ (uint8_t *)audio_packets_l16[0].data,
+ audio_packets_l16[0].len);
+ transcode_test("gsm", "l16",
+ (uint8_t *)audio_packets_gsm[0].data,
+ audio_packets_gsm[0].len);
+ transcode_test("gsm", "gsm",
+ (uint8_t *)audio_packets_gsm[0].data,
+ audio_packets_gsm[0].len);
+ transcode_test("gsm", "pcma",
+ (uint8_t *)audio_packets_gsm[0].data,
+ audio_packets_gsm[0].len);
+ transcode_test("pcma", "l16",
+ (uint8_t *)audio_packets_pcma[0].data,
+ audio_packets_pcma[0].len);
+ transcode_test("pcma", "gsm",
+ (uint8_t *)audio_packets_pcma[0].data,
+ audio_packets_pcma[0].len);
+ transcode_test("pcma", "pcma",
+ (uint8_t *)audio_packets_pcma[0].data,
+ audio_packets_pcma[0].len);
+
+ printf("=== Transcoding Bad Cases ===\n");
+
+ printf("Invalid size:\n");
+ rc = transcode_test("gsm", "pcma",
+ (uint8_t *)audio_packets_gsm_invalid_size[0].data,
+ audio_packets_gsm_invalid_size[0].len);
+ OSMO_ASSERT(rc < 0);
+
+ printf("Invalid data:\n");
+ rc = transcode_test("gsm", "pcma",
+ (uint8_t *)audio_packets_gsm_invalid_data[0].data,
+ audio_packets_gsm_invalid_data[0].len);
+ OSMO_ASSERT(rc < 0);
+
+ printf("Invalid payload type:\n");
+ rc = transcode_test("gsm", "pcma",
+ (uint8_t *)audio_packets_gsm_invalid_ptype[0].data,
+ audio_packets_gsm_invalid_ptype[0].len);
+ OSMO_ASSERT(rc == 0);
+
+ printf("=== Repacking ===\n");
+
+ test_repacking(160, 160, 0);
+ test_repacking(160, 160, 1);
+ test_repacking(160, 80, 0);
+ test_repacking(160, 80, 1);
+ test_repacking(160, 320, 0);
+ test_repacking(160, 320, 1);
+ test_repacking(160, 240, 0);
+ test_repacking(160, 240, 1);
+ test_repacking(160, 100, 0);
+ test_repacking(160, 100, 1);
+ test_rtp_seq_state();
+ test_transcode_result();
+ test_transcode_change();
+
+ return 0;
+}
+
diff --git a/tests/legacy_mgcp/mgcp_transcoding_test.ok b/tests/legacy_mgcp/mgcp_transcoding_test.ok
new file mode 100644
index 0000000..387cfd2
--- /dev/null
+++ b/tests/legacy_mgcp/mgcp_transcoding_test.ok
@@ -0,0 +1,539 @@
+=== Transcoding Good Cases ===
+== Transcoding test ==
+converting l16 -> l16
+encoded:
+ 80 0b 00 01 00 00 00 a0 11 22 33 44 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed 00 00 40 13
+ 5a 9e 40 13 00 00 bf ed a5 62 bf ed
+counted: 0
+== Transcoding test ==
+converting l16 -> gsm
+encoded:
+ 80 0b 00 01 00 00 00 a0 11 22 33 44 d4 7c e3 e9
+ 62 50 39 f0 f8 b4 68 ea 6c 0e 81 1b 56 2a d5 bc
+ 69 9c d1 f0 66 7a ec 49 7a 33 3d 0a de
+counted: 12
+== Transcoding test ==
+converting l16 -> pcma
+encoded:
+ 80 0b 00 01 00 00 00 a0 11 22 33 44 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25
+counted: 12
+== Transcoding test ==
+converting gsm -> l16
+encoded:
+ 80 03 00 01 00 00 00 a0 11 22 33 44 00 00 54 00
+ 59 f0 34 20 c4 c8 b9 f8 e2 18 f1 e8 f2 28 f0 e0
+ 46 08 4f 80 2c a0 a9 c8 80 00 c0 58 3f 80 63 c0
+ 24 b8 fa b8 f6 88 0b a0 c8 70 a8 b0 c8 c0 3b a8
+ 66 a0 2e 38 d1 f8 98 98 aa 18 e8 30 26 a0 37 40
+ 37 e8 17 00 ee 50 b7 80 b1 88 de 28 18 40 45 b0
+ 4f 48 21 d8 df 78 ae 68 ab 98 d6 b8 18 18 48 90
+ 4e 70 27 40 e8 10 b5 b0 ac 80 d4 60 14 50 48 48
+ 50 10 2a 00 ec 08 ba 00 af 58 d1 c0 10 60 45 c8
+ 54 10 30 78 f1 a8 bb 18 ad 48 ce 30 0a e8 3f 30
+ 4f 10 32 18 f6 18 bf 20 ac 30 cd 80 0b d0 43 d8
+ 55 e0 34 a0 f5 78 bc 98 ad 98 cd c8 0a 80 40 58
+ 51 c0 35 40 f9 60 c1 68 ac c8 cb 38 08 00 40 98
+ 51 e0 34 d8 fa 28 c2 f0 ae 40 c7 70 02 d0 3c a8
+ 54 78 38 a0 fc 68 c2 08 ad 50 c7 78 01 60 39 c0
+ 51 38 3a e8 00 e8 c6 38 ab d8 c4 00 fe 08 39 18
+ 50 30 39 50 01 d8 ca 70 b1 80 c4 c8 fc 58 36 40
+ 51 d8 3b 08 02 80 c8 58 b0 60 c5 a8 fb d0 33 e8
+ 4e 80 3c e0 06 10 cb 90 ae 48 c2 60 f9 58 34 08
+ 4d a0 3a a8 06 48 cf 80 b4 60 c3 e8 f7 90 30 18
+ 4d a0 3b 98 07 90 cf 18 b4 68 c4 88
+counted: 12
+== Transcoding test ==
+converting gsm -> gsm
+encoded:
+ 80 03 00 01 00 00 00 a0 11 22 33 44 d4 7c e3 e9
+ 62 50 39 f0 f8 b4 68 ea 6c 0e 81 1b 56 2a d5 bc
+ 69 9c d1 f0 66 7a ec 49 7a 33 3d 0a de
+counted: 0
+== Transcoding test ==
+converting gsm -> pcma
+encoded:
+ 80 03 00 01 00 00 00 a0 11 22 33 44 d5 a0 a3 bf
+ 38 24 08 19 1e 1b a4 a6 b3 20 2a 3a ba ad b7 60
+ 17 92 3e 20 3e b8 ac b2 32 2c 20 02 b6 be be 82
+ 04 27 26 35 8d a4 a6 b5 35 21 20 31 8d a7 a6 b6
+ 02 27 21 30 81 a7 a1 b0 06 24 21 32 85 a4 a0 bd
+ 19 24 21 3d 90 ba a6 bc 16 25 21 3c 92 a5 a0 bf
+ 10 25 21 3c 90 a5 a1 bf 6f 3a 21 3f 95 a5 a1 bf
+ 62 3b 21 39 f3 bb a0 b9 79 3b 21 39 c3 b9 a1 b8
+ db 39 20 3b 4a b9 a1 b9 c8 3f 26 38 78 be a1 b8
+ f1 3e 26 38 65 bc a6 bb ed 3f 21 3b 6f bf a6 b8
+ ec 3d 27 3b 15 bd a6 b8 eb 3d 27 38
+counted: 12
+== Transcoding test ==
+converting pcma -> l16
+encoded:
+ 80 08 00 01 00 00 00 a0 11 22 33 44 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00 00 08 42 00
+ 5a 00 42 00 00 08 be 00 a6 00 be 00
+counted: 12
+== Transcoding test ==
+converting pcma -> gsm
+encoded:
+ 80 08 00 01 00 00 00 a0 11 22 33 44 d4 b9 f4 5d
+ d9 50 5a e1 a0 cd 76 ea 52 0e 87 53 ad d4 ea a2
+ 0a 63 ca e9 60 79 e2 2a 25 d2 c0 f3 39
+counted: 12
+== Transcoding test ==
+converting pcma -> pcma
+encoded:
+ 80 08 00 01 00 00 00 a0 11 22 33 44 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25 d5 a5 a3 a5
+ d5 25 23 25 d5 a5 a3 a5 d5 25 23 25
+counted: 0
+=== Transcoding Bad Cases ===
+Invalid size:
+== Transcoding test ==
+converting gsm -> pcma
+Nothing encoded due: No message of desired type
+Invalid data:
+== Transcoding test ==
+converting gsm -> pcma
+Nothing encoded due: No message of desired type
+Invalid payload type:
+== Transcoding test ==
+converting gsm -> pcma
+encoded:
+ 80 08 00 01 00 00 00 a0 11 22 33 44 d5 a0 a3 bf
+ 38 24 08 19 1e 1b a4 a6 b3 20 2a 3a ba ad b7 60
+ 17 92 3e 20 3e b8 ac b2 32 2c 20 02 b6 be be 82
+ 04 27 26 35 8d a4 a6 b5 35 21 20 31 8d a7 a6 b6
+ 02 27 21 30 81 a7 a1 b0 06 24 21 32 85 a4 a0 bd
+ 19 24 21 3d 90 ba a6 bc 16 25 21 3c 92 a5 a0 bf
+ 10 25 21 3c 90 a5 a1 bf 6f 3a 21 3f 95 a5 a1 bf
+ 62 3b 21 39 f3 bb a0 b9 79 3b 21 39 c3 b9 a1 b8
+ db 39 20 3b 4a b9 a1 b9 c8 3f 26 38 78 be a1 b8
+ f1 3e 26 38 65 bc a6 bb ed 3f 21 3b 6f bf a6 b8
+ ec 3d 27 3b 15 bd a6 b8 eb 3d 27 38
+counted: 12
+=== Repacking ===
+== Transcoding test ==
+converting pcma -> l16
+generating 160 pcma input samples
+got 2 l16 output frames (320 octets) count=12
+generating 160 pcma input samples
+got 2 l16 output frames (320 octets) count=12
+generating 160 pcma input samples
+got 2 l16 output frames (320 octets) count=12
+generating 160 pcma input samples
+got 2 l16 output frames (320 octets) count=12
+generating 160 pcma input samples
+got 2 l16 output frames (320 octets) count=12
+generating 160 pcma input samples
+got 2 l16 output frames (320 octets) count=12
+generating 160 pcma input samples
+got 2 l16 output frames (320 octets) count=12
+generating 160 pcma input samples
+got 2 l16 output frames (320 octets) count=12
+generating 160 pcma input samples
+got 2 l16 output frames (320 octets) count=12
+generating 160 pcma input samples
+got 2 l16 output frames (320 octets) count=12
+generating 160 pcma input samples
+got 2 l16 output frames (320 octets) count=12
+generating 160 pcma input samples
+got 2 l16 output frames (320 octets) count=12
+generating 160 pcma input samples
+got 2 l16 output frames (320 octets) count=12
+generating 160 pcma input samples
+got 2 l16 output frames (320 octets) count=12
+generating 160 pcma input samples
+got 2 l16 output frames (320 octets) count=12
+generating 160 pcma input samples
+got 2 l16 output frames (320 octets) count=12
+== Transcoding test ==
+converting pcma -> pcma
+generating 160 pcma input samples
+got 2 pcma output frames (160 octets) count=12
+generating 160 pcma input samples
+got 2 pcma output frames (160 octets) count=12
+generating 160 pcma input samples
+got 2 pcma output frames (160 octets) count=12
+generating 160 pcma input samples
+got 2 pcma output frames (160 octets) count=12
+generating 160 pcma input samples
+got 2 pcma output frames (160 octets) count=12
+generating 160 pcma input samples
+got 2 pcma output frames (160 octets) count=12
+generating 160 pcma input samples
+got 2 pcma output frames (160 octets) count=12
+generating 160 pcma input samples
+got 2 pcma output frames (160 octets) count=12
+generating 160 pcma input samples
+got 2 pcma output frames (160 octets) count=12
+generating 160 pcma input samples
+got 2 pcma output frames (160 octets) count=12
+generating 160 pcma input samples
+got 2 pcma output frames (160 octets) count=12
+generating 160 pcma input samples
+got 2 pcma output frames (160 octets) count=12
+generating 160 pcma input samples
+got 2 pcma output frames (160 octets) count=12
+generating 160 pcma input samples
+got 2 pcma output frames (160 octets) count=12
+generating 160 pcma input samples
+got 2 pcma output frames (160 octets) count=12
+generating 160 pcma input samples
+got 2 pcma output frames (160 octets) count=12
+== Transcoding test ==
+converting pcma -> l16
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+== Transcoding test ==
+converting pcma -> pcma
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+== Transcoding test ==
+converting pcma -> l16
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 4 l16 output frames (640 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 4 l16 output frames (640 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 4 l16 output frames (640 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 4 l16 output frames (640 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 4 l16 output frames (640 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 4 l16 output frames (640 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 4 l16 output frames (640 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 4 l16 output frames (640 octets) count=12
+== Transcoding test ==
+converting pcma -> pcma
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 4 pcma output frames (320 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 4 pcma output frames (320 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 4 pcma output frames (320 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 4 pcma output frames (320 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 4 pcma output frames (320 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 4 pcma output frames (320 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 4 pcma output frames (320 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 4 pcma output frames (320 octets) count=12
+== Transcoding test ==
+converting pcma -> l16
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 3 l16 output frames (480 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 3 l16 output frames (480 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 3 l16 output frames (480 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 3 l16 output frames (480 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 3 l16 output frames (480 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 3 l16 output frames (480 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 3 l16 output frames (480 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 3 l16 output frames (480 octets) count=12
+== Transcoding test ==
+converting pcma -> pcma
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 3 pcma output frames (240 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 3 pcma output frames (240 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 3 pcma output frames (240 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 3 pcma output frames (240 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 3 pcma output frames (240 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 3 pcma output frames (240 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 3 pcma output frames (240 octets) count=12
+generating 160 pcma input samples
+generating 160 pcma input samples
+got 3 pcma output frames (240 octets) count=12
+== Transcoding test ==
+converting pcma -> l16
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+generating 160 pcma input samples
+got 1 l16 output frames (160 octets) count=12
+got 1 l16 output frames (160 octets) count=12
+== Transcoding test ==
+converting pcma -> pcma
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+generating 160 pcma input samples
+got 1 pcma output frames (80 octets) count=12
+got 1 pcma output frames (80 octets) count=12
+Testing Initial L16->GSM, PCMA->GSM
diff --git a/tests/mgcp/Makefile.am b/tests/mgcp/Makefile.am
new file mode 100644
index 0000000..caccb9f
--- /dev/null
+++ b/tests/mgcp/Makefile.am
@@ -0,0 +1,38 @@
+AM_CPPFLAGS = \
+ $(all_includes) \
+ -I$(top_srcdir)/include \
+ -I$(top_srcdir) \
+ $(NULL)
+
+AM_CFLAGS = \
+ -Wall \
+ -ggdb3 \
+ $(LIBOSMOCORE_CFLAGS) \
+ $(LIBOSMONETIF_CFLAGS) \
+ $(COVERAGE_CFLAGS) \
+ $(NULL)
+
+AM_LDFLAGS = \
+ $(COVERAGE_LDFLAGS) \
+ $(NULL)
+
+EXTRA_DIST = \
+ mgcp_test.ok \
+ $(NULL)
+
+noinst_PROGRAMS = \
+ mgcp_test \
+ $(NULL)
+
+mgcp_test_SOURCES = \
+ mgcp_test.c \
+ $(NULL)
+
+mgcp_test_LDADD = \
+ $(top_builddir)/src/libosmo-mgcp/libosmo-mgcp.la \
+ $(LIBOSMOCORE_LIBS) \
+ $(LIBOSMOVTY_LIBS) \
+ $(LIBRARY_DL) \
+ $(LIBOSMONETIF_LIBS) \
+ -lm \
+ $(NULL)
diff --git a/tests/mgcp/mgcp_test.c b/tests/mgcp/mgcp_test.c
new file mode 100644
index 0000000..e14b7ee
--- /dev/null
+++ b/tests/mgcp/mgcp_test.c
@@ -0,0 +1,1353 @@
+/*
+ * (C) 2011-2012,2014 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2011-2012,2014 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#undef _GNU_SOURCE
+#define _GNU_SOURCE
+
+#include <osmocom/mgcp/mgcp.h>
+#include <osmocom/mgcp/vty.h>
+#include <osmocom/mgcp/mgcp_common.h>
+#include <osmocom/mgcp/mgcp_internal.h>
+#include <osmocom/mgcp/mgcp_stat.h>
+#include <osmocom/mgcp/mgcp_msg.h>
+#include <osmocom/mgcp/mgcp_ep.h>
+
+#include <osmocom/core/application.h>
+#include <osmocom/core/talloc.h>
+#include <osmocom/core/utils.h>
+#include <string.h>
+#include <limits.h>
+#include <dlfcn.h>
+#include <time.h>
+#include <math.h>
+
+char *strline_r(char *str, char **saveptr);
+
+const char *strline_test_data =
+ "one CR\r"
+ "two CR\r"
+ "\r"
+ "one CRLF\r\n"
+ "two CRLF\r\n"
+ "\r\n" "one LF\n" "two LF\n" "\n" "mixed (4 lines)\r\r\n\n\r\n";
+
+#define EXPECTED_NUMBER_OF_LINES 13
+
+static void test_strline(void)
+{
+ char *save = NULL;
+ char *line;
+ char buf[2048];
+ int counter = 0;
+
+ osmo_strlcpy(buf, strline_test_data, sizeof(buf));
+
+ for (line = mgcp_strline(buf, &save); line;
+ line = mgcp_strline(NULL, &save)) {
+ printf("line: '%s'\n", line);
+ counter++;
+ }
+
+ OSMO_ASSERT(counter == EXPECTED_NUMBER_OF_LINES);
+}
+
+#define AUEP1 "AUEP 158663169 ds/e1-1/2@172.16.6.66 MGCP 1.0\r\n"
+#define AUEP1_RET "200 158663169 OK\r\n"
+#define AUEP2 "AUEP 18983213 ds/e1-2/1@172.16.6.66 MGCP 1.0\r\n"
+#define AUEP2_RET "500 18983213 FAIL\r\n"
+#define EMPTY "\r\n"
+#define EMPTY_RET NULL
+#define SHORT "CRCX \r\n"
+#define SHORT_RET "510 000000 FAIL\r\n"
+
+#define MDCX_WRONG_EP "MDCX 18983213 ds/e1-3/1@172.16.6.66 MGCP 1.0\r\n"
+#define MDCX_ERR_RET "510 18983213 FAIL\r\n"
+#define MDCX_UNALLOCATED "MDCX 18983214 ds/e1-1/2@172.16.6.66 MGCP 1.0\r\n"
+#define MDCX_RET "400 18983214 FAIL\r\n"
+
+#define MDCX3 \
+ "MDCX 18983215 1@mgw MGCP 1.0\r\n" \
+ "I: 1\n"
+
+#define MDCX3_RET \
+ "200 18983215 OK\r\n" \
+ "I: 1\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "s=-\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 16002 RTP/AVP 128\r\n" \
+ "a=rtpmap:128 GSM-EFR/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define MDCX3A_RET \
+ "200 18983215 OK\r\n" \
+ "I: 1\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "s=-\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 16002 RTP/AVP 97\r\n" \
+ "a=rtpmap:97 GSM-EFR/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define MDCX3_FMTP_RET \
+ "200 18983215 OK\r\n" \
+ "I: 1\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "s=-\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 16006 RTP/AVP 128\r\n" \
+ "a=rtpmap:128 GSM-EFR/8000\r\n" \
+ "a=fmtp:126 0/1/2\r\n" \
+ "a=ptime:40\r\n"
+
+#define MDCX4 \
+ "MDCX 18983216 1@mgw MGCP 1.0\r\n" \
+ "M: sendrecv\r" \
+ "C: 2\r\n" \
+ "I: 1\r\n" \
+ "L: p:20, a:AMR, nt:IN\r\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 4441 RTP/AVP 99\r\n" \
+ "a=rtpmap:99 AMR/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define MDCX4_RET(Ident) \
+ "200 " Ident " OK\r\n" \
+ "I: 1\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "s=-\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 16002 RTP/AVP 99\r\n" \
+ "a=rtpmap:99 AMR/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define MDCX4_RO_RET(Ident) \
+ "200 " Ident " OK\r\n" \
+ "I: 1\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "s=-\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 16002 RTP/AVP 96\r\n" \
+ "a=rtpmap:96 AMR\r\n" \
+ "a=ptime:40\r\n"
+
+#define MDCX4_PT1 \
+ "MDCX 18983217 1@mgw MGCP 1.0\r\n" \
+ "M: sendrecv\r" \
+ "C: 2\r\n" \
+ "I: 1\r\n" \
+ "L: p:20-40, a:AMR, nt:IN\r\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 4441 RTP/AVP 99\r\n" \
+ "a=rtpmap:99 AMR/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define MDCX4_PT2 \
+ "MDCX 18983218 1@mgw MGCP 1.0\r\n" \
+ "M: sendrecv\r" \
+ "C: 2\r\n" \
+ "I: 1\r\n" \
+ "L: p:20-20, a:AMR, nt:IN\r\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 4441 RTP/AVP 99\r\n" \
+ "a=rtpmap:99 AMR/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define MDCX4_PT3 \
+ "MDCX 18983219 1@mgw MGCP 1.0\r\n" \
+ "M: sendrecv\r" \
+ "C: 2\r\n" \
+ "I: 1\r\n" \
+ "L: a:AMR, nt:IN\r\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 4441 RTP/AVP 99\r\n" \
+ "a=rtpmap:99 AMR/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define MDCX4_SO \
+ "MDCX 18983220 1@mgw MGCP 1.0\r\n" \
+ "M: sendonly\r" \
+ "C: 2\r\n" \
+ "I: 1\r\n" \
+ "L: p:20, a:AMR, nt:IN\r\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 4441 RTP/AVP 99\r\n" \
+ "a=rtpmap:99 AMR/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define MDCX4_RO \
+ "MDCX 18983221 1@mgw MGCP 1.0\r\n" \
+ "M: recvonly\r" \
+ "C: 2\r\n" \
+ "I: 1\r\n" \
+ "L: p:20, a:AMR, nt:IN\r\n"
+
+#define SHORT2 "CRCX 1"
+#define SHORT2_RET "510 000000 FAIL\r\n"
+#define SHORT3 "CRCX 1 1@mgw"
+#define SHORT4 "CRCX 1 1@mgw MGCP"
+#define SHORT5 "CRCX 1 1@mgw MGCP 1.0"
+
+#define CRCX \
+ "CRCX 2 1@mgw MGCP 1.0\r\n" \
+ "M: recvonly\r\n" \
+ "C: 2\r\n" \
+ "I: 1\r\n" \
+ "L: p:20\r\n" \
+ "\r\n" \
+ "v=0\r\n" \
+ "c=IN IP4 123.12.12.123\r\n" \
+ "m=audio 5904 RTP/AVP 97\r\n" \
+ "a=rtpmap:97 GSM-EFR/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define CRCX_RET \
+ "200 2 OK\r\n" \
+ "I: 1\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "s=-\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 16002 RTP/AVP 97\r\n" \
+ "a=rtpmap:97 GSM-EFR/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define CRCX_RET_NO_RTPMAP \
+ "200 2 OK\r\n" \
+ "I: 1\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "s=-\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 16002 RTP/AVP 97\r\n" \
+ "a=ptime:40\r\n"
+
+#define CRCX_FMTP_RET \
+ "200 2 OK\r\n" \
+ "I: 1\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "s=-\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 16006 RTP/AVP 97\r\n" \
+ "a=rtpmap:97 GSM-EFR/8000\r\n" \
+ "a=fmtp:126 0/1/2\r\n" \
+ "a=ptime:40\r\n"
+
+#define CRCX_ZYN \
+ "CRCX 2 1@mgw MGCP 1.0\r" \
+ "M: recvonly\r" \
+ "C: 2\r\n" \
+ "I: 1\n" \
+ "\n" \
+ "v=0\r" \
+ "c=IN IP4 123.12.12.123\r" \
+ "m=audio 5904 RTP/AVP 97\r" \
+ "a=rtpmap:97 GSM-EFR/8000\r"
+
+#define CRCX_ZYN_RET \
+ "200 2 OK\r\n" \
+ "I: 1\n" \
+ "\n" \
+ "v=0\r\n" \
+ "o=- 1 23 IN IP4 0.0.0.0\r\n" \
+ "s=-\r\n" \
+ "c=IN IP4 0.0.0.0\r\n" \
+ "t=0 0\r\n" \
+ "m=audio 16004 RTP/AVP 97\r\n" \
+ "a=rtpmap:97 GSM-EFR/8000\r\n" \
+ "a=ptime:20\r\n"
+
+#define DLCX \
+ "DLCX 7 1@mgw MGCP 1.0\r\n" \
+ "I: 1\r\n" \
+ "C: 2\r\n"
+
+#define DLCX_RET \
+ "250 7 OK\r\n" \
+ "P: PS=0, OS=0, PR=0, OR=0, PL=0, JI=0\r\n" \
+ "X-Osmo-CP: EC TI=0, TO=0\r\n"
+
+#define RQNT \
+ "RQNT 186908780 1@mgw MGCP 1.0\r\n" \
+ "X: B244F267488\r\n" \
+ "S: D/9\r\n"
+
+#define RQNT2 \
+ "RQNT 186908781 1@mgw MGCP 1.0\r\n" \
+ "X: ADD4F26746F\r\n" \
+ "R: D/[0-9#*](N), G/ft, fxr/t38\r\n"
+
+#define RQNT1_RET "200 186908780 OK\r\n"
+#define RQNT2_RET "200 186908781 OK\r\n"
+
+#define PTYPE_IGNORE 0 /* == default initializer */
+#define PTYPE_NONE 128
+#define PTYPE_NYI PTYPE_NONE
+
+#define CRCX_MULT_1 \
+ "CRCX 2 1@mgw MGCP 1.0\r\n" \
+ "I: 4711\r\n" \
+ "M: recvonly\r\n" \
+ "C: 2\r\n" \
+ "X\r\n" \
+ "L: p:20\r\n" \
+ "\r\n" \
+ "v=0\r\n" \
+ "c=IN IP4 123.12.12.123\r\n" \
+ "m=audio 5904 RTP/AVP 18 97\r\n" \
+ "a=rtpmap:18 G729/8000\r\n" \
+ "a=rtpmap:97 GSM-EFR/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define CRCX_MULT_2 \
+ "CRCX 2 2@mgw MGCP 1.0\r\n" \
+ "I: 90210\r\n" \
+ "M: recvonly\r\n" \
+ "C: 2\r\n" \
+ "X\r\n" \
+ "L: p:20\r\n" \
+ "\r\n" \
+ "v=0\r\n" \
+ "c=IN IP4 123.12.12.123\r\n" \
+ "m=audio 5904 RTP/AVP 18 97 101\r\n" \
+ "a=rtpmap:18 G729/8000\r\n" \
+ "a=rtpmap:97 GSM-EFR/8000\r\n" \
+ "a=rtpmap:101 FOO/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define CRCX_MULT_3 \
+ "CRCX 2 3@mgw MGCP 1.0\r\n" \
+ "I: 0815\r\n" \
+ "M: recvonly\r\n" \
+ "C: 2\r\n" \
+ "X\r\n" \
+ "L: p:20\r\n" \
+ "\r\n" \
+ "v=0\r\n" \
+ "c=IN IP4 123.12.12.123\r\n" \
+ "m=audio 5904 RTP/AVP\r\n" \
+ "a=rtpmap:18 G729/8000\r\n" \
+ "a=rtpmap:97 GSM-EFR/8000\r\n" \
+ "a=rtpmap:101 FOO/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define CRCX_MULT_4 \
+ "CRCX 2 4@mgw MGCP 1.0\r\n" \
+ "I: 32168\r\n" \
+ "M: recvonly\r\n" \
+ "C: 2\r\n" \
+ "X\r\n" \
+ "L: p:20\r\n" \
+ "\r\n" \
+ "v=0\r\n" \
+ "c=IN IP4 123.12.12.123\r\n" \
+ "m=audio 5904 RTP/AVP 18\r\n" \
+ "a=rtpmap:18 G729/8000\r\n" \
+ "a=rtpmap:97 GSM-EFR/8000\r\n" \
+ "a=rtpmap:101 FOO/8000\r\n" \
+ "a=ptime:40\r\n"
+
+#define CRCX_MULT_GSM_EXACT \
+ "CRCX 259260421 5@mgw MGCP 1.0\r\n" \
+ "C: 1355c6041e\r\n" \
+ "I: 3\r\n" \
+ "L: p:20, a:GSM, nt:IN\r\n" \
+ "M: recvonly\r\n" \
+ "\r\n" \
+ "v=0\r\n" \
+ "o=- 1439038275 1439038275 IN IP4 192.168.181.247\r\n" \
+ "s=-\r\nc=IN IP4 192.168.181.247\r\n" \
+ "t=0 0\r\nm=audio 29084 RTP/AVP 255 0 8 3 18 4 96 97 101\r\n" \
+ "a=rtpmap:0 PCMU/8000\r\n" \
+ "a=rtpmap:8 PCMA/8000\r\n" \
+ "a=rtpmap:3 gsm/8000\r\n" \
+ "a=rtpmap:18 G729/8000\r\n" \
+ "a=fmtp:18 annexb=no\r\n" \
+ "a=rtpmap:4 G723/8000\r\n" \
+ "a=rtpmap:96 iLBC/8000\r\n" \
+ "a=fmtp:96 mode=20\r\n" \
+ "a=rtpmap:97 iLBC/8000\r\n" \
+ "a=fmtp:97 mode=30\r\n" \
+ "a=rtpmap:101 telephone-event/8000\r\n" \
+ "a=fmtp:101 0-15\r\n" \
+ "a=recvonly\r\n"
+
+#define MDCX_NAT_DUMMY \
+ "MDCX 23 5@mgw MGCP 1.0\r\n" \
+ "C: 1355c6041e\r\n" \
+ "I: 3\r\n" \
+ "\r\n" \
+ "c=IN IP4 8.8.8.8\r\n" \
+ "m=audio 16434 RTP/AVP 255\r\n"
+
+struct mgcp_test {
+ const char *name;
+ const char *req;
+ const char *exp_resp;
+ int ptype;
+ const char *extra_fmtp;
+};
+
+static const struct mgcp_test tests[] = {
+ {"AUEP1", AUEP1, AUEP1_RET},
+ {"AUEP2", AUEP2, AUEP2_RET},
+ {"MDCX1", MDCX_WRONG_EP, MDCX_ERR_RET},
+ {"MDCX2", MDCX_UNALLOCATED, MDCX_RET},
+ {"CRCX", CRCX, CRCX_RET, 97},
+ {"MDCX3", MDCX3, MDCX3_RET, PTYPE_IGNORE},
+ {"MDCX4", MDCX4, MDCX4_RET("18983216"), 99},
+ {"MDCX4_PT1", MDCX4_PT1, MDCX4_RET("18983217"), 99},
+ {"MDCX4_PT2", MDCX4_PT2, MDCX4_RET("18983218"), 99},
+ {"MDCX4_PT3", MDCX4_PT3, MDCX4_RET("18983219"), 99},
+ {"MDCX4_SO", MDCX4_SO, MDCX4_RET("18983220"), 99},
+ {"MDCX4_RO", MDCX4_RO, MDCX4_RO_RET("18983221"), PTYPE_IGNORE},
+ {"DLCX", DLCX, DLCX_RET, PTYPE_IGNORE},
+ {"CRCX_ZYN", CRCX_ZYN, CRCX_ZYN_RET, 97},
+ {"EMPTY", EMPTY, EMPTY_RET},
+ {"SHORT1", SHORT, SHORT_RET},
+ {"SHORT2", SHORT2, SHORT2_RET},
+ {"SHORT3", SHORT3, SHORT2_RET},
+ {"SHORT4", SHORT4, SHORT2_RET},
+ {"RQNT1", RQNT, RQNT1_RET},
+ {"RQNT2", RQNT2, RQNT2_RET},
+ {"DLCX", DLCX, DLCX_RET, PTYPE_IGNORE},
+ {"CRCX", CRCX, CRCX_FMTP_RET, 97,.extra_fmtp = "a=fmtp:126 0/1/2"},
+ {"MDCX3", MDCX3, MDCX3_FMTP_RET, PTYPE_NONE,.extra_fmtp =
+ "a=fmtp:126 0/1/2"},
+ {"DLCX", DLCX, DLCX_RET, PTYPE_IGNORE,.extra_fmtp = "a=fmtp:126 0/1/2"},
+};
+
+static const struct mgcp_test retransmit[] = {
+ {"CRCX", CRCX, CRCX_RET},
+ {"RQNT1", RQNT, RQNT1_RET},
+ {"RQNT2", RQNT2, RQNT2_RET},
+ {"MDCX3", MDCX3, MDCX3A_RET},
+ {"DLCX", DLCX, DLCX_RET},
+};
+
+static struct msgb *create_msg(const char *str)
+{
+ struct msgb *msg;
+
+ msg = msgb_alloc_headroom(4096, 128, "MGCP msg");
+ int len = sprintf((char *)msg->data, "%s", str);
+ msg->l2h = msgb_put(msg, len);
+ return msg;
+}
+
+static int last_endpoint = -1;
+
+static int mgcp_test_policy_cb(struct mgcp_trunk_config *cfg, int endpoint,
+ int state, const char *transactio_id)
+{
+ fprintf(stderr, "Policy CB got state %d on endpoint %d\n",
+ state, endpoint);
+ last_endpoint = endpoint;
+ return MGCP_POLICY_CONT;
+}
+
+#define MGCP_DUMMY_LOAD 0x23
+static int dummy_packets = 0;
+/* override and forward */
+ssize_t sendto(int sockfd, const void *buf, size_t len, int flags,
+ const struct sockaddr *dest_addr, socklen_t addrlen)
+{
+ uint32_t dest_host =
+ htonl(((struct sockaddr_in *)dest_addr)->sin_addr.s_addr);
+ int dest_port = htons(((struct sockaddr_in *)dest_addr)->sin_port);
+
+ if (len == 1 && ((const char *)buf)[0] == MGCP_DUMMY_LOAD) {
+ fprintf(stderr,
+ "Dummy packet to 0x%08x:%d, msg length %zu\n%s\n\n",
+ dest_host, dest_port, len, osmo_hexdump(buf, len));
+ dummy_packets += 1;
+ }
+
+ return len;
+}
+
+static int64_t force_monotonic_time_us = -1;
+/* override and forward */
+int clock_gettime(clockid_t clk_id, struct timespec *tp)
+{
+ typedef int (*clock_gettime_t)(clockid_t clk_id, struct timespec *tp);
+ static clock_gettime_t real_clock_gettime = NULL;
+
+ if (!real_clock_gettime)
+ real_clock_gettime = dlsym(RTLD_NEXT, "clock_gettime");
+
+ if (clk_id == CLOCK_MONOTONIC && force_monotonic_time_us >= 0) {
+ tp->tv_sec = force_monotonic_time_us / 1000000;
+ tp->tv_nsec = (force_monotonic_time_us % 1000000) * 1000;
+ return 0;
+ }
+
+ return real_clock_gettime(clk_id, tp);
+}
+
+#define CONN_UNMODIFIED (0x1000)
+
+static void test_values(void)
+{
+ /* Check that NONE disables all output */
+ OSMO_ASSERT((MGCP_CONN_NONE & MGCP_CONN_RECV_SEND) == 0);
+
+ /* Check that LOOPBACK enables all output */
+ OSMO_ASSERT((MGCP_CONN_LOOPBACK & MGCP_CONN_RECV_SEND) ==
+ MGCP_CONN_RECV_SEND);
+}
+
+static void test_messages(void)
+{
+ struct mgcp_config *cfg;
+ struct mgcp_endpoint *endp;
+ int i;
+ struct mgcp_conn_rtp *conn = NULL;
+
+ cfg = mgcp_config_alloc();
+
+ cfg->trunk.number_endpoints = 64;
+ mgcp_endpoints_allocate(&cfg->trunk);
+
+ cfg->policy_cb = mgcp_test_policy_cb;
+
+ mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));
+
+ for (i = 0; i < ARRAY_SIZE(tests); i++) {
+ const struct mgcp_test *t = &tests[i];
+ struct msgb *inp;
+ struct msgb *msg;
+
+ printf("Testing %s\n", t->name);
+
+ last_endpoint = -1;
+ dummy_packets = 0;
+
+ osmo_talloc_replace_string(cfg, &cfg->trunk.audio_fmtp_extra,
+ t->extra_fmtp);
+
+ inp = create_msg(t->req);
+ msg = mgcp_handle_message(cfg, inp);
+ msgb_free(inp);
+ if (!t->exp_resp) {
+ if (msg) {
+ printf("%s failed '%s'\n", t->name,
+ (char *)msg->data);
+ OSMO_ASSERT(false);
+ }
+ } else if (strcmp((char *)msg->data, t->exp_resp) != 0) {
+ printf("%s failed.\nExpected:\n%s\nGot:\n%s\n",
+ t->name, t->exp_resp, (char *) msg->data);
+ OSMO_ASSERT(false);
+ }
+ msgb_free(msg);
+
+ if (dummy_packets)
+ printf("Dummy packets: %d\n", dummy_packets);
+
+ if (last_endpoint != -1) {
+ endp = &cfg->trunk.endpoints[last_endpoint];
+
+ conn = mgcp_conn_get_rtp(endp, 1);
+ if (conn) {
+ OSMO_ASSERT(conn);
+
+ if (conn->end.packet_duration_ms != -1)
+ printf("Detected packet duration: %d\n",
+ conn->end.packet_duration_ms);
+ else
+ printf("Packet duration not set\n");
+ if (endp->local_options.pkt_period_min ||
+ endp->local_options.pkt_period_max)
+ printf
+ ("Requested packetetization period: "
+ "%d-%d\n",
+ endp->local_options.pkt_period_min,
+ endp->
+ local_options.pkt_period_max);
+ else
+ printf
+ ("Requested packetization period not set\n");
+
+ if ((conn->conn->mode & CONN_UNMODIFIED) == 0) {
+ printf("Connection mode: %d:%s%s%s%s\n",
+ conn->conn->mode,
+ !conn->conn->mode ? " NONE" : "",
+ conn->conn->mode & MGCP_CONN_SEND_ONLY
+ ? " SEND" : "",
+ conn->conn->mode & MGCP_CONN_RECV_ONLY
+ ? " RECV" : "",
+ conn->conn->mode & MGCP_CONN_LOOPBACK
+ & ~MGCP_CONN_RECV_SEND
+ ? " LOOP" : "");
+ fprintf(stderr,
+ "RTP output %sabled, NET output %sabled\n",
+ conn->end.output_enabled
+ ? "en" : "dis",
+ conn->end.output_enabled
+ ? "en" : "dis");
+ } else
+ printf("Connection mode not set\n");
+
+ OSMO_ASSERT(conn->end.output_enabled
+ == (conn->conn->mode & MGCP_CONN_SEND_ONLY ? 1 : 0));
+
+ conn->conn->mode |= CONN_UNMODIFIED;
+
+ }
+ endp->local_options.pkt_period_min = 0;
+ endp->local_options.pkt_period_max = 0;
+ }
+
+ /* Check detected payload type */
+ if (t->ptype != PTYPE_IGNORE) {
+ OSMO_ASSERT(last_endpoint != -1);
+ endp = &cfg->trunk.endpoints[last_endpoint];
+
+ fprintf(stderr, "endpoint %d: "
+ "payload type %d (expected %d)\n",
+ last_endpoint,
+ conn->end.codec.payload_type, t->ptype);
+
+ if (t->ptype != PTYPE_IGNORE)
+ OSMO_ASSERT(conn->end.codec.payload_type ==
+ t->ptype);
+
+ /* Reset them again for next test */
+ conn->end.codec.payload_type = PTYPE_NONE;
+ }
+ }
+
+ talloc_free(cfg);
+}
+
+static void test_retransmission(void)
+{
+ struct mgcp_config *cfg;
+ int i;
+
+ cfg = mgcp_config_alloc();
+
+ cfg->trunk.number_endpoints = 64;
+ mgcp_endpoints_allocate(&cfg->trunk);
+
+ mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));
+
+ for (i = 0; i < ARRAY_SIZE(retransmit); i++) {
+ const struct mgcp_test *t = &retransmit[i];
+ struct msgb *inp;
+ struct msgb *msg;
+
+ printf("Testing %s\n", t->name);
+
+ inp = create_msg(t->req);
+ msg = mgcp_handle_message(cfg, inp);
+
+ msgb_free(inp);
+ if (strcmp((char *)msg->data, t->exp_resp) != 0) {
+ printf("%s failed '%s'\n", t->name, (char *)msg->data);
+ OSMO_ASSERT(false);
+ }
+ msgb_free(msg);
+
+ /* Retransmit... */
+ printf("Re-transmitting %s\n", t->name);
+ inp = create_msg(t->req);
+ msg = mgcp_handle_message(cfg, inp);
+ msgb_free(inp);
+ if (strcmp((char *)msg->data, t->exp_resp) != 0) {
+ printf("%s failed '%s'\n", t->name, (char *)msg->data);
+ OSMO_ASSERT(false);
+ }
+ msgb_free(msg);
+ }
+
+ talloc_free(cfg);
+}
+
+static int rqnt_cb(struct mgcp_endpoint *endp, char _tone)
+{
+ ptrdiff_t tone = _tone;
+ endp->cfg->data = (void *)tone;
+ return 0;
+}
+
+static void test_rqnt_cb(void)
+{
+ struct mgcp_config *cfg;
+ struct msgb *inp, *msg;
+
+ cfg = mgcp_config_alloc();
+ cfg->rqnt_cb = rqnt_cb;
+
+ cfg->trunk.number_endpoints = 64;
+ mgcp_endpoints_allocate(&cfg->trunk);
+
+ mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));
+
+ inp = create_msg(CRCX);
+ msgb_free(mgcp_handle_message(cfg, inp));
+ msgb_free(inp);
+
+ /* send the RQNT and check for the CB */
+ inp = create_msg(RQNT);
+ msg = mgcp_handle_message(cfg, inp);
+ if (strncmp((const char *)msg->l2h, "200", 3) != 0) {
+ printf("FAILED: message is not 200. '%s'\n", msg->l2h);
+ abort();
+ }
+
+ if (cfg->data != (void *)'9') {
+ printf("FAILED: callback not called: %p\n", cfg->data);
+ abort();
+ }
+
+ msgb_free(msg);
+ msgb_free(inp);
+
+ inp = create_msg(DLCX);
+ msgb_free(mgcp_handle_message(cfg, inp));
+ msgb_free(inp);
+ talloc_free(cfg);
+}
+
+struct pl_test {
+ int cycles;
+ uint16_t base_seq;
+ uint16_t max_seq;
+ uint32_t packets;
+
+ uint32_t expected;
+ int loss;
+};
+
+static const struct pl_test pl_test_dat[] = {
+ /* basic.. just one package */
+ {.cycles = 0,.base_seq = 0,.max_seq = 0,.packets = 1,.expected =
+ 1,.loss = 0},
+ /* some packages and a bit of loss */
+ {.cycles = 0,.base_seq = 0,.max_seq = 100,.packets = 100,.expected =
+ 101,.loss = 1},
+ /* wrap around */
+ {.cycles = 1 << 16,.base_seq = 0xffff,.max_seq = 2,.packets =
+ 4,.expected = 4,.loss = 0},
+ /* min loss */
+ {.cycles = 0,.base_seq = 0,.max_seq = 0,.packets = UINT_MAX,.expected =
+ 1,.loss = INT_MIN},
+ /* max loss, with wrap around on expected max */
+ {.cycles = INT_MAX,.base_seq = 0,.max_seq = UINT16_MAX,.packets =
+ 0,.expected = ((uint32_t) (INT_MAX) + UINT16_MAX + 1),.loss = INT_MAX},
+};
+
+static void test_packet_loss_calc(void)
+{
+ int i;
+ printf("Testing packet loss calculation.\n");
+
+ for (i = 0; i < ARRAY_SIZE(pl_test_dat); ++i) {
+ uint32_t expected;
+ int loss;
+ struct mgcp_rtp_state state;
+ struct mgcp_rtp_end rtp;
+ memset(&state, 0, sizeof(state));
+ memset(&rtp, 0, sizeof(rtp));
+
+ state.stats_initialized = 1;
+ state.stats_base_seq = pl_test_dat[i].base_seq;
+ state.stats_max_seq = pl_test_dat[i].max_seq;
+ state.stats_cycles = pl_test_dat[i].cycles;
+
+ rtp.packets_rx = pl_test_dat[i].packets;
+ calc_loss(&state, &rtp, &expected, &loss);
+
+ if (loss != pl_test_dat[i].loss
+ || expected != pl_test_dat[i].expected) {
+ printf
+ ("FAIL: Wrong exp/loss at idx(%d) Loss(%d vs. %d) Exp(%u vs. %u)\n",
+ i, loss, pl_test_dat[i].loss, expected,
+ pl_test_dat[i].expected);
+ }
+ }
+}
+
+int mgcp_parse_stats(struct msgb *msg, uint32_t *ps, uint32_t *os,
+ uint32_t *pr, uint32_t *_or, int *loss,
+ uint32_t *jitter)
+{
+ char *line, *save;
+ int rc;
+
+ /* initialize with bad values */
+ *ps = *os = *pr = *_or = *jitter = UINT_MAX;
+ *loss = INT_MAX;
+
+ line = strtok_r((char *)msg->l2h, "\r\n", &save);
+ if (!line)
+ return -1;
+
+ /* this can only parse the message that is created above... */
+ for_each_non_empty_line(line, save) {
+ switch (line[0]) {
+ case 'P':
+ rc = sscanf(line,
+ "P: PS=%u, OS=%u, PR=%u, OR=%u, PL=%d, JI=%u",
+ ps, os, pr, _or, loss, jitter);
+ return rc == 6 ? 0 : -1;
+ }
+ }
+
+ return -1;
+}
+
+static void test_mgcp_stats(void)
+{
+ printf("Testing stat parsing\n");
+
+ uint32_t bps, bos, pr, _or, jitter;
+ struct msgb *msg;
+ int loss;
+ int rc;
+
+ msg = create_msg(DLCX_RET);
+ rc = mgcp_parse_stats(msg, &bps, &bos, &pr, &_or, &loss, &jitter);
+ printf("Parsing result: %d\n", rc);
+ if (bps != 0 || bos != 0 || pr != 0 || _or != 0 || loss != 0
+ || jitter != 0)
+ printf("FAIL: Parsing failed1.\n");
+ msgb_free(msg);
+
+ msg =
+ create_msg
+ ("250 7 OK\r\nP: PS=10, OS=20, PR=30, OR=40, PL=-3, JI=40\r\n");
+ rc = mgcp_parse_stats(msg, &bps, &bos, &pr, &_or, &loss, &jitter);
+ printf("Parsing result: %d\n", rc);
+ if (bps != 10 || bos != 20 || pr != 30 || _or != 40 || loss != -3
+ || jitter != 40)
+ printf("FAIL: Parsing failed2.\n");
+ msgb_free(msg);
+}
+
+struct rtp_packet_info {
+ float txtime;
+ int len;
+ char *data;
+};
+
+struct rtp_packet_info test_rtp_packets1[] = {
+ /* RTP: SeqNo=0, TS=0 */
+ {0.000000, 20, "\x80\x62\x00\x00\x00\x00\x00\x00\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=1, TS=160 */
+ {0.020000, 20, "\x80\x62\x00\x01\x00\x00\x00\xA0\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=2, TS=320 */
+ {0.040000, 20, "\x80\x62\x00\x02\x00\x00\x01\x40\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* Repeat RTP timestamp: */
+ /* RTP: SeqNo=3, TS=320 */
+ {0.060000, 20, "\x80\x62\x00\x03\x00\x00\x01\x40\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=4, TS=480 */
+ {0.080000, 20, "\x80\x62\x00\x04\x00\x00\x01\xE0\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=5, TS=640 */
+ {0.100000, 20, "\x80\x62\x00\x05\x00\x00\x02\x80\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* Double skip RTP timestamp (delta = 2*160): */
+ /* RTP: SeqNo=6, TS=960 */
+ {0.120000, 20, "\x80\x62\x00\x06\x00\x00\x03\xC0\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=7, TS=1120 */
+ {0.140000, 20, "\x80\x62\x00\x07\x00\x00\x04\x60\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=8, TS=1280 */
+ {0.160000, 20, "\x80\x62\x00\x08\x00\x00\x05\x00\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* Non 20ms RTP timestamp (delta = 120): */
+ /* RTP: SeqNo=9, TS=1400 */
+ {0.180000, 20, "\x80\x62\x00\x09\x00\x00\x05\x78\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=10, TS=1560 */
+ {0.200000, 20, "\x80\x62\x00\x0A\x00\x00\x06\x18\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=11, TS=1720 */
+ {0.220000, 20, "\x80\x62\x00\x0B\x00\x00\x06\xB8\x11\x22\x33\x44"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* SSRC changed to 0x10203040, RTP timestamp jump */
+ /* RTP: SeqNo=12, TS=34688 */
+ {0.240000, 20, "\x80\x62\x00\x0C\x00\x00\x87\x80\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=13, TS=34848 */
+ {0.260000, 20, "\x80\x62\x00\x0D\x00\x00\x88\x20\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=14, TS=35008 */
+ {0.280000, 20, "\x80\x62\x00\x0E\x00\x00\x88\xC0\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* Non 20ms RTP timestamp (delta = 120): */
+ /* RTP: SeqNo=15, TS=35128 */
+ {0.300000, 20, "\x80\x62\x00\x0F\x00\x00\x89\x38\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=16, TS=35288 */
+ {0.320000, 20, "\x80\x62\x00\x10\x00\x00\x89\xD8\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=17, TS=35448 */
+ {0.340000, 20, "\x80\x62\x00\x11\x00\x00\x8A\x78\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x8A\xAB\xCD\xEF"},
+ /* SeqNo increment by 2, RTP timestamp delta = 320: */
+ /* RTP: SeqNo=19, TS=35768 */
+ {0.360000, 20, "\x80\x62\x00\x13\x00\x00\x8B\xB8\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=20, TS=35928 */
+ {0.380000, 20, "\x80\x62\x00\x14\x00\x00\x8C\x58\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=21, TS=36088 */
+ {0.380000, 20, "\x80\x62\x00\x15\x00\x00\x8C\xF8\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* Repeat last packet */
+ /* RTP: SeqNo=21, TS=36088 */
+ {0.400000, 20, "\x80\x62\x00\x15\x00\x00\x8C\xF8\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=22, TS=36248 */
+ {0.420000, 20, "\x80\x62\x00\x16\x00\x00\x8D\x98\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=23, TS=36408 */
+ {0.440000, 20, "\x80\x62\x00\x17\x00\x00\x8E\x38\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* Don't increment SeqNo but increment timestamp by 160 */
+ /* RTP: SeqNo=23, TS=36568 */
+ {0.460000, 20, "\x80\x62\x00\x17\x00\x00\x8E\xD8\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=24, TS=36728 */
+ {0.480000, 20, "\x80\x62\x00\x18\x00\x00\x8F\x78\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=25, TS=36888 */
+ {0.500000, 20, "\x80\x62\x00\x19\x00\x00\x90\x18\x10\x20\x30\x40"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* SSRC changed to 0x50607080, RTP timestamp jump, Delay of 1.5s,
+ * SeqNo jump */
+ /* RTP: SeqNo=1000, TS=160000 */
+ {2.000000, 20, "\x80\x62\x03\xE8\x00\x02\x71\x00\x50\x60\x70\x80"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=1001, TS=160160 */
+ {2.020000, 20, "\x80\x62\x03\xE9\x00\x02\x71\xA0\x50\x60\x70\x80"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+ /* RTP: SeqNo=1002, TS=160320 */
+ {2.040000, 20, "\x80\x62\x03\xEA\x00\x02\x72\x40\x50\x60\x70\x80"
+ "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
+};
+
+void mgcp_patch_and_count(struct mgcp_endpoint *endp,
+ struct mgcp_rtp_state *state,
+ struct mgcp_rtp_end *rtp_end,
+ struct sockaddr_in *addr, char *data, int len);
+
+static void test_packet_error_detection(int patch_ssrc, int patch_ts)
+{
+ int i;
+
+ struct mgcp_trunk_config trunk;
+ struct mgcp_endpoint endp;
+ struct mgcp_rtp_state state;
+ struct mgcp_rtp_end *rtp;
+ struct sockaddr_in addr = { 0 };
+ char buffer[4096];
+ uint32_t last_ssrc = 0;
+ uint32_t last_timestamp = 0;
+ uint32_t last_seqno = 0;
+ int last_in_ts_err_cnt = 0;
+ int last_out_ts_err_cnt = 0;
+ struct mgcp_conn_rtp *conn = NULL;
+
+ printf("Testing packet error detection%s%s.\n",
+ patch_ssrc ? ", patch SSRC" : "",
+ patch_ts ? ", patch timestamps" : "");
+
+ memset(&trunk, 0, sizeof(trunk));
+ memset(&endp, 0, sizeof(endp));
+ memset(&state, 0, sizeof(state));
+
+ endp.type = &ep_typeset.rtp;
+
+ trunk.number_endpoints = 1;
+ trunk.endpoints = &endp;
+ trunk.force_constant_ssrc = patch_ssrc;
+ trunk.force_aligned_timing = patch_ts;
+
+ endp.tcfg = &trunk;
+
+ INIT_LLIST_HEAD(&endp.conns);
+ mgcp_conn_alloc(NULL, &endp, 4711, MGCP_CONN_TYPE_RTP,
+ "test-connection");
+ conn = mgcp_conn_get_rtp(&endp, 4711);
+ OSMO_ASSERT(conn);
+
+ rtp = &conn->end;
+
+ rtp->codec.payload_type = 98;
+
+ for (i = 0; i < ARRAY_SIZE(test_rtp_packets1); ++i) {
+ struct rtp_packet_info *info = test_rtp_packets1 + i;
+
+ force_monotonic_time_us = round(1000000.0 * info->txtime);
+
+ OSMO_ASSERT(info->len <= sizeof(buffer));
+ OSMO_ASSERT(info->len >= 0);
+ memmove(buffer, info->data, info->len);
+ mgcp_rtp_end_config(&endp, 1, rtp);
+
+ mgcp_patch_and_count(&endp, &state, rtp, &addr,
+ buffer, info->len);
+
+ if (state.out_stream.ssrc != last_ssrc) {
+ printf("Output SSRC changed to %08x\n",
+ state.out_stream.ssrc);
+ last_ssrc = state.out_stream.ssrc;
+ }
+
+ printf("In TS: %d, dTS: %d, Seq: %d\n",
+ state.in_stream.last_timestamp,
+ state.in_stream.last_tsdelta, state.in_stream.last_seq);
+
+ printf("Out TS change: %d, dTS: %d, Seq change: %d, "
+ "TS Err change: in %+d, out %+d\n",
+ state.out_stream.last_timestamp - last_timestamp,
+ state.out_stream.last_tsdelta,
+ state.out_stream.last_seq - last_seqno,
+ state.in_stream.err_ts_counter - last_in_ts_err_cnt,
+ state.out_stream.err_ts_counter - last_out_ts_err_cnt);
+
+ printf("Stats: Jitter = %u, Transit = %d\n",
+ calc_jitter(&state), state.stats_transit);
+
+ last_in_ts_err_cnt = state.in_stream.err_ts_counter;
+ last_out_ts_err_cnt = state.out_stream.err_ts_counter;
+ last_timestamp = state.out_stream.last_timestamp;
+ last_seqno = state.out_stream.last_seq;
+ }
+
+ force_monotonic_time_us = -1;
+}
+
+static void test_multilple_codec(void)
+{
+ struct mgcp_config *cfg;
+ struct mgcp_endpoint *endp;
+ struct msgb *inp, *resp;
+ struct in_addr addr;
+ struct mgcp_conn_rtp *conn = NULL;
+
+ printf("Testing multiple payload types\n");
+
+ cfg = mgcp_config_alloc();
+ cfg->trunk.number_endpoints = 64;
+ mgcp_endpoints_allocate(&cfg->trunk);
+ cfg->policy_cb = mgcp_test_policy_cb;
+ mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));
+
+ /* Allocate endpoint 1@mgw with two codecs */
+ last_endpoint = -1;
+ inp = create_msg(CRCX_MULT_1);
+ resp = mgcp_handle_message(cfg, inp);
+ msgb_free(inp);
+ msgb_free(resp);
+
+ OSMO_ASSERT(last_endpoint == 1);
+ endp = &cfg->trunk.endpoints[last_endpoint];
+ conn = mgcp_conn_get_rtp(endp, 4711);
+ OSMO_ASSERT(conn);
+ OSMO_ASSERT(conn->end.codec.payload_type == 18);
+ OSMO_ASSERT(conn->end.alt_codec.payload_type == 97);
+
+ /* Allocate 2@mgw with three codecs, last one ignored */
+ last_endpoint = -1;
+ inp = create_msg(CRCX_MULT_2);
+ resp = mgcp_handle_message(cfg, inp);
+ msgb_free(inp);
+ msgb_free(resp);
+
+ OSMO_ASSERT(last_endpoint == 2);
+ endp = &cfg->trunk.endpoints[last_endpoint];
+ conn = mgcp_conn_get_rtp(endp, 90210);
+ OSMO_ASSERT(conn);
+ OSMO_ASSERT(conn->end.codec.payload_type == 18);
+ OSMO_ASSERT(conn->end.alt_codec.payload_type == 97);
+
+ /* Allocate 3@mgw with no codecs, check for PT == -1 */
+ last_endpoint = -1;
+ inp = create_msg(CRCX_MULT_3);
+ resp = mgcp_handle_message(cfg, inp);
+ msgb_free(inp);
+ msgb_free(resp);
+
+ OSMO_ASSERT(last_endpoint == 3);
+ endp = &cfg->trunk.endpoints[last_endpoint];
+ conn = mgcp_conn_get_rtp(endp, 815);
+ OSMO_ASSERT(conn);
+ OSMO_ASSERT(conn->end.codec.payload_type == -1);
+ OSMO_ASSERT(conn->end.alt_codec.payload_type == -1);
+
+ /* Allocate 4@mgw with a single codec */
+ last_endpoint = -1;
+ inp = create_msg(CRCX_MULT_4);
+ resp = mgcp_handle_message(cfg, inp);
+ msgb_free(inp);
+ msgb_free(resp);
+
+ OSMO_ASSERT(last_endpoint == 4);
+ endp = &cfg->trunk.endpoints[last_endpoint];
+ conn = mgcp_conn_get_rtp(endp, 32168);
+ OSMO_ASSERT(conn);
+ OSMO_ASSERT(conn->end.codec.payload_type == 18);
+ OSMO_ASSERT(conn->end.alt_codec.payload_type == -1);
+
+ /* Allocate 5@mgw at select GSM.. */
+ last_endpoint = -1;
+ inp = create_msg(CRCX_MULT_GSM_EXACT);
+ talloc_free(cfg->trunk.audio_name);
+ cfg->trunk.audio_name = "GSM/8000";
+ cfg->trunk.no_audio_transcoding = 1;
+ resp = mgcp_handle_message(cfg, inp);
+ msgb_free(inp);
+ msgb_free(resp);
+
+ OSMO_ASSERT(last_endpoint == 5);
+ endp = &cfg->trunk.endpoints[last_endpoint];
+ conn = mgcp_conn_get_rtp(endp, 3);
+ OSMO_ASSERT(conn);
+ OSMO_ASSERT(conn->end.codec.payload_type == 3);
+ OSMO_ASSERT(conn->end.alt_codec.payload_type == -1);
+
+ inp = create_msg(MDCX_NAT_DUMMY);
+ last_endpoint = -1;
+ resp = mgcp_handle_message(cfg, inp);
+ msgb_free(inp);
+ msgb_free(resp);
+ OSMO_ASSERT(last_endpoint == 5);
+ endp = &cfg->trunk.endpoints[last_endpoint];
+ conn = mgcp_conn_get_rtp(endp, 3);
+ OSMO_ASSERT(conn);
+ OSMO_ASSERT(conn->end.codec.payload_type == 3);
+ OSMO_ASSERT(conn->end.alt_codec.payload_type == -1);
+ OSMO_ASSERT(conn->end.rtp_port == htons(16434));
+ memset(&addr, 0, sizeof(addr));
+ inet_aton("8.8.8.8", &addr);
+ OSMO_ASSERT(conn->end.addr.s_addr == addr.s_addr);
+
+ /* Check what happens without that flag */
+
+ /* Free the previous endpoint and the data and
+ * check if the connection really vanished... */
+ mgcp_release_endp(endp);
+ talloc_free(endp->last_response);
+ talloc_free(endp->last_trans);
+ endp->last_response = endp->last_trans = NULL;
+ conn = mgcp_conn_get_rtp(endp, 3);
+ OSMO_ASSERT(!conn);
+
+ last_endpoint = -1;
+ inp = create_msg(CRCX_MULT_GSM_EXACT);
+ cfg->trunk.no_audio_transcoding = 0;
+ resp = mgcp_handle_message(cfg, inp);
+ msgb_free(inp);
+ msgb_free(resp);
+
+ OSMO_ASSERT(last_endpoint == 5);
+ endp = &cfg->trunk.endpoints[last_endpoint];
+ conn = mgcp_conn_get_rtp(endp, 3);
+ OSMO_ASSERT(conn);
+ OSMO_ASSERT(conn->end.codec.payload_type == 255);
+ OSMO_ASSERT(conn->end.alt_codec.payload_type == 0);
+
+ talloc_free(cfg);
+}
+
+static void test_no_cycle(void)
+{
+ struct mgcp_config *cfg;
+ struct mgcp_endpoint *endp;
+ struct mgcp_conn_rtp *conn = NULL;
+
+ printf("Testing no sequence flow on initial packet\n");
+
+ cfg = mgcp_config_alloc();
+ cfg->trunk.number_endpoints = 64;
+ mgcp_endpoints_allocate(&cfg->trunk);
+
+ endp = &cfg->trunk.endpoints[1];
+
+ mgcp_conn_alloc(NULL, endp, 4711, MGCP_CONN_TYPE_RTP,
+ "test-connection");
+ conn = mgcp_conn_get_rtp(endp, 4711);
+ OSMO_ASSERT(conn);
+
+ OSMO_ASSERT(conn->state.stats_initialized == 0);
+
+ mgcp_rtp_annex_count(endp, &conn->state, 0, 0, 2342);
+ OSMO_ASSERT(conn->state.stats_initialized == 1);
+ OSMO_ASSERT(conn->state.stats_cycles == 0);
+ OSMO_ASSERT(conn->state.stats_max_seq == 0);
+
+ mgcp_rtp_annex_count(endp, &conn->state, 1, 0, 2342);
+ OSMO_ASSERT(conn->state.stats_initialized == 1);
+ OSMO_ASSERT(conn->state.stats_cycles == 0);
+ OSMO_ASSERT(conn->state.stats_max_seq == 1);
+
+ /* now jump.. */
+ mgcp_rtp_annex_count(endp, &conn->state, UINT16_MAX, 0, 2342);
+ OSMO_ASSERT(conn->state.stats_initialized == 1);
+ OSMO_ASSERT(conn->state.stats_cycles == 0);
+ OSMO_ASSERT(conn->state.stats_max_seq == UINT16_MAX);
+
+ /* and wrap */
+ mgcp_rtp_annex_count(endp, &conn->state, 0, 0, 2342);
+ OSMO_ASSERT(conn->state.stats_initialized == 1);
+ OSMO_ASSERT(conn->state.stats_cycles == UINT16_MAX + 1);
+ OSMO_ASSERT(conn->state.stats_max_seq == 0);
+
+ talloc_free(cfg);
+}
+
+static void test_no_name(void)
+{
+ struct mgcp_config *cfg;
+ struct msgb *inp, *msg;
+
+ printf("Testing no rtpmap name\n");
+ cfg = mgcp_config_alloc();
+
+ cfg->trunk.number_endpoints = 64;
+ cfg->trunk.audio_send_name = 0;
+ mgcp_endpoints_allocate(&cfg->trunk);
+
+ cfg->policy_cb = mgcp_test_policy_cb;
+
+ mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));
+
+ inp = create_msg(CRCX);
+ msg = mgcp_handle_message(cfg, inp);
+ if (strcmp((char *)msg->data, CRCX_RET_NO_RTPMAP) != 0) {
+ printf("FAILED: there should not be a RTPMAP: %s\n",
+ (char *)msg->data);
+ OSMO_ASSERT(false);
+ }
+ msgb_free(inp);
+ msgb_free(msg);
+
+ mgcp_release_endp(&cfg->trunk.endpoints[1]);
+ talloc_free(cfg);
+}
+
+static void test_osmux_cid(void)
+{
+ int id, i;
+
+ OSMO_ASSERT(osmux_used_cid() == 0);
+ id = osmux_get_cid();
+ OSMO_ASSERT(id == 0);
+ OSMO_ASSERT(osmux_used_cid() == 1);
+ osmux_put_cid(id);
+ OSMO_ASSERT(osmux_used_cid() == 0);
+
+ for (i = 0; i < 256; ++i) {
+ id = osmux_get_cid();
+ OSMO_ASSERT(id == i);
+ OSMO_ASSERT(osmux_used_cid() == i + 1);
+ }
+
+ id = osmux_get_cid();
+ OSMO_ASSERT(id == -1);
+
+ for (i = 0; i < 256; ++i)
+ osmux_put_cid(i);
+ OSMO_ASSERT(osmux_used_cid() == 0);
+}
+
+static const struct log_info_cat log_categories[] = {
+};
+
+const struct log_info log_info = {
+ .cat = log_categories,
+ .num_cat = ARRAY_SIZE(log_categories),
+};
+
+int main(int argc, char **argv)
+{
+ msgb_talloc_ctx_init(NULL, 0);
+ osmo_init_logging(&log_info);
+
+ test_strline();
+ test_values();
+ test_messages();
+ test_retransmission();
+ test_packet_loss_calc();
+ test_rqnt_cb();
+ test_mgcp_stats();
+ test_packet_error_detection(1, 0);
+ test_packet_error_detection(0, 0);
+ test_packet_error_detection(0, 1);
+ test_packet_error_detection(1, 1);
+ test_multilple_codec();
+ test_no_cycle();
+ test_no_name();
+ test_osmux_cid();
+
+ printf("Done\n");
+ return EXIT_SUCCESS;
+}
diff --git a/tests/mgcp/mgcp_test.ok b/tests/mgcp/mgcp_test.ok
new file mode 100644
index 0000000..7376930
--- /dev/null
+++ b/tests/mgcp/mgcp_test.ok
@@ -0,0 +1,471 @@
+line: 'one CR'
+line: 'two CR'
+line: ''
+line: 'one CRLF'
+line: 'two CRLF'
+line: ''
+line: 'one LF'
+line: 'two LF'
+line: ''
+line: 'mixed (4 lines)'
+line: ''
+line: ''
+line: ''
+Testing AUEP1
+Testing AUEP2
+Testing MDCX1
+Testing MDCX2
+Testing CRCX
+Dummy packets: 2
+Detected packet duration: 40
+Requested packetetization period: 20-20
+Connection mode: 1: RECV
+Testing MDCX3
+Dummy packets: 2
+Detected packet duration: 40
+Requested packetization period not set
+Connection mode: 1: RECV
+Testing MDCX4
+Dummy packets: 2
+Detected packet duration: 40
+Requested packetetization period: 20-20
+Connection mode: 3: SEND RECV
+Testing MDCX4_PT1
+Dummy packets: 2
+Detected packet duration: 40
+Requested packetetization period: 20-40
+Connection mode: 3: SEND RECV
+Testing MDCX4_PT2
+Dummy packets: 2
+Detected packet duration: 40
+Requested packetetization period: 20-20
+Connection mode: 3: SEND RECV
+Testing MDCX4_PT3
+Dummy packets: 2
+Detected packet duration: 40
+Requested packetization period not set
+Connection mode: 3: SEND RECV
+Testing MDCX4_SO
+Detected packet duration: 40
+Requested packetetization period: 20-20
+Connection mode: 2: SEND
+Testing MDCX4_RO
+Dummy packets: 2
+Detected packet duration: 40
+Requested packetetization period: 20-20
+Connection mode: 1: RECV
+Testing DLCX
+Testing CRCX_ZYN
+Dummy packets: 2
+Detected packet duration: 20
+Requested packetization period not set
+Connection mode: 1: RECV
+Testing EMPTY
+Testing SHORT1
+Testing SHORT2
+Testing SHORT3
+Testing SHORT4
+Testing RQNT1
+Testing RQNT2
+Testing DLCX
+Testing CRCX
+Dummy packets: 2
+Detected packet duration: 40
+Requested packetetization period: 20-20
+Connection mode: 1: RECV
+Testing MDCX3
+Dummy packets: 2
+Detected packet duration: 40
+Requested packetization period not set
+Connection mode: 1: RECV
+Testing DLCX
+Testing CRCX
+Re-transmitting CRCX
+Testing RQNT1
+Re-transmitting RQNT1
+Testing RQNT2
+Re-transmitting RQNT2
+Testing MDCX3
+Re-transmitting MDCX3
+Testing DLCX
+Re-transmitting DLCX
+Testing packet loss calculation.
+Testing stat parsing
+Parsing result: 0
+Parsing result: 0
+Testing packet error detection, patch SSRC.
+Output SSRC changed to 11223344
+In TS: 0, dTS: 0, Seq: 0
+Out TS change: 0, dTS: 0, Seq change: 0, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 160, dTS: 160, Seq: 1
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 320, dTS: 160, Seq: 2
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 320, dTS: 160, Seq: 3
+Out TS change: 0, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 10, Transit = 160
+In TS: 480, dTS: 160, Seq: 4
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 9, Transit = 160
+In TS: 640, dTS: 160, Seq: 5
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 8, Transit = 160
+In TS: 960, dTS: 320, Seq: 6
+Out TS change: 320, dTS: 320, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 18, Transit = 0
+In TS: 1120, dTS: 160, Seq: 7
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 17, Transit = 0
+In TS: 1280, dTS: 160, Seq: 8
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 16, Transit = 0
+In TS: 1400, dTS: 120, Seq: 9
+Out TS change: 120, dTS: 120, Seq change: 1, TS Err change: in +1, out +1
+Stats: Jitter = 17, Transit = 40
+In TS: 1560, dTS: 160, Seq: 10
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 16, Transit = 40
+In TS: 1720, dTS: 160, Seq: 11
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 15, Transit = 40
+In TS: 34688, dTS: 0, Seq: 12
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 34848, dTS: 160, Seq: 13
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 35008, dTS: 160, Seq: 14
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 35128, dTS: 120, Seq: 15
+Out TS change: 120, dTS: 120, Seq change: 1, TS Err change: in +1, out +1
+Stats: Jitter = 2, Transit = -32728
+In TS: 35288, dTS: 160, Seq: 16
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35448, dTS: 160, Seq: 17
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35768, dTS: 160, Seq: 19
+Out TS change: 320, dTS: 160, Seq change: 2, TS Err change: in +0, out +0
+Stats: Jitter = 12, Transit = -32888
+In TS: 35928, dTS: 160, Seq: 20
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 11, Transit = -32888
+In TS: 36088, dTS: 160, Seq: 21
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 20, Transit = -33048
+In TS: 36088, dTS: 160, Seq: 21
+Out TS change: 0, dTS: 160, Seq change: 0, TS Err change: in +0, out +0
+Stats: Jitter = 29, Transit = -32888
+In TS: 36248, dTS: 160, Seq: 22
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 27, Transit = -32888
+In TS: 36408, dTS: 160, Seq: 23
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 25, Transit = -32888
+In TS: 36568, dTS: 160, Seq: 23
+Out TS change: 160, dTS: 160, Seq change: 0, TS Err change: in +1, out +1
+Stats: Jitter = 24, Transit = -32888
+In TS: 36728, dTS: 160, Seq: 24
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 22, Transit = -32888
+In TS: 36888, dTS: 160, Seq: 25
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 21, Transit = -32888
+In TS: 160000, dTS: 0, Seq: 1000
+Out TS change: 12000, dTS: 12000, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+In TS: 160160, dTS: 160, Seq: 1001
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+In TS: 160320, dTS: 160, Seq: 1002
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+Testing packet error detection.
+Output SSRC changed to 11223344
+In TS: 0, dTS: 0, Seq: 0
+Out TS change: 0, dTS: 0, Seq change: 0, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 160, dTS: 160, Seq: 1
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 320, dTS: 160, Seq: 2
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 320, dTS: 160, Seq: 3
+Out TS change: 0, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 10, Transit = 160
+In TS: 480, dTS: 160, Seq: 4
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 9, Transit = 160
+In TS: 640, dTS: 160, Seq: 5
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 8, Transit = 160
+In TS: 960, dTS: 320, Seq: 6
+Out TS change: 320, dTS: 320, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 18, Transit = 0
+In TS: 1120, dTS: 160, Seq: 7
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 17, Transit = 0
+In TS: 1280, dTS: 160, Seq: 8
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 16, Transit = 0
+In TS: 1400, dTS: 120, Seq: 9
+Out TS change: 120, dTS: 120, Seq change: 1, TS Err change: in +1, out +1
+Stats: Jitter = 17, Transit = 40
+In TS: 1560, dTS: 160, Seq: 10
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 16, Transit = 40
+In TS: 1720, dTS: 160, Seq: 11
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 15, Transit = 40
+Output SSRC changed to 10203040
+In TS: 34688, dTS: 0, Seq: 12
+Out TS change: 32968, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 34848, dTS: 160, Seq: 13
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 35008, dTS: 160, Seq: 14
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 35128, dTS: 120, Seq: 15
+Out TS change: 120, dTS: 120, Seq change: 1, TS Err change: in +1, out +1
+Stats: Jitter = 2, Transit = -32728
+In TS: 35288, dTS: 160, Seq: 16
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35448, dTS: 160, Seq: 17
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35768, dTS: 160, Seq: 19
+Out TS change: 320, dTS: 160, Seq change: 2, TS Err change: in +0, out +0
+Stats: Jitter = 12, Transit = -32888
+In TS: 35928, dTS: 160, Seq: 20
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 11, Transit = -32888
+In TS: 36088, dTS: 160, Seq: 21
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 20, Transit = -33048
+In TS: 36088, dTS: 160, Seq: 21
+Out TS change: 0, dTS: 160, Seq change: 0, TS Err change: in +0, out +0
+Stats: Jitter = 29, Transit = -32888
+In TS: 36248, dTS: 160, Seq: 22
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 27, Transit = -32888
+In TS: 36408, dTS: 160, Seq: 23
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 25, Transit = -32888
+In TS: 36568, dTS: 160, Seq: 23
+Out TS change: 160, dTS: 160, Seq change: 0, TS Err change: in +1, out +1
+Stats: Jitter = 24, Transit = -32888
+In TS: 36728, dTS: 160, Seq: 24
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 22, Transit = -32888
+In TS: 36888, dTS: 160, Seq: 25
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 21, Transit = -32888
+Output SSRC changed to 50607080
+In TS: 160000, dTS: 0, Seq: 1000
+Out TS change: 123112, dTS: 160, Seq change: 975, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+In TS: 160160, dTS: 160, Seq: 1001
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+In TS: 160320, dTS: 160, Seq: 1002
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+Testing packet error detection, patch timestamps.
+Output SSRC changed to 11223344
+In TS: 0, dTS: 0, Seq: 0
+Out TS change: 0, dTS: 0, Seq change: 0, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 160, dTS: 160, Seq: 1
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 320, dTS: 160, Seq: 2
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 320, dTS: 160, Seq: 3
+Out TS change: 0, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 10, Transit = 160
+In TS: 480, dTS: 160, Seq: 4
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 9, Transit = 160
+In TS: 640, dTS: 160, Seq: 5
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 8, Transit = 160
+In TS: 960, dTS: 320, Seq: 6
+Out TS change: 320, dTS: 320, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 18, Transit = 0
+In TS: 1120, dTS: 160, Seq: 7
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 17, Transit = 0
+In TS: 1280, dTS: 160, Seq: 8
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 16, Transit = 0
+In TS: 1400, dTS: 120, Seq: 9
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +1, out +0
+Stats: Jitter = 17, Transit = 40
+In TS: 1560, dTS: 160, Seq: 10
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 16, Transit = 40
+In TS: 1720, dTS: 160, Seq: 11
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 15, Transit = 40
+Output SSRC changed to 10203040
+In TS: 34688, dTS: 0, Seq: 12
+Out TS change: 32968, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 34848, dTS: 160, Seq: 13
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 35008, dTS: 160, Seq: 14
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 35128, dTS: 120, Seq: 15
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +1, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35288, dTS: 160, Seq: 16
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35448, dTS: 160, Seq: 17
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35768, dTS: 160, Seq: 19
+Out TS change: 320, dTS: 160, Seq change: 2, TS Err change: in +0, out +0
+Stats: Jitter = 12, Transit = -32888
+In TS: 35928, dTS: 160, Seq: 20
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 11, Transit = -32888
+In TS: 36088, dTS: 160, Seq: 21
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 20, Transit = -33048
+In TS: 36088, dTS: 160, Seq: 21
+Out TS change: 0, dTS: 160, Seq change: 0, TS Err change: in +0, out +0
+Stats: Jitter = 29, Transit = -32888
+In TS: 36248, dTS: 160, Seq: 22
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 27, Transit = -32888
+In TS: 36408, dTS: 160, Seq: 23
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 25, Transit = -32888
+In TS: 36568, dTS: 160, Seq: 23
+Out TS change: 160, dTS: 160, Seq change: 0, TS Err change: in +1, out +1
+Stats: Jitter = 24, Transit = -32888
+In TS: 36728, dTS: 160, Seq: 24
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 22, Transit = -32888
+In TS: 36888, dTS: 160, Seq: 25
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 21, Transit = -32888
+Output SSRC changed to 50607080
+In TS: 160000, dTS: 0, Seq: 1000
+Out TS change: 123112, dTS: 160, Seq change: 975, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+In TS: 160160, dTS: 160, Seq: 1001
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+In TS: 160320, dTS: 160, Seq: 1002
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+Testing packet error detection, patch SSRC, patch timestamps.
+Output SSRC changed to 11223344
+In TS: 0, dTS: 0, Seq: 0
+Out TS change: 0, dTS: 0, Seq change: 0, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 160, dTS: 160, Seq: 1
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 320, dTS: 160, Seq: 2
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = 0
+In TS: 320, dTS: 160, Seq: 3
+Out TS change: 0, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 10, Transit = 160
+In TS: 480, dTS: 160, Seq: 4
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 9, Transit = 160
+In TS: 640, dTS: 160, Seq: 5
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 8, Transit = 160
+In TS: 960, dTS: 320, Seq: 6
+Out TS change: 320, dTS: 320, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 18, Transit = 0
+In TS: 1120, dTS: 160, Seq: 7
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 17, Transit = 0
+In TS: 1280, dTS: 160, Seq: 8
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 16, Transit = 0
+In TS: 1400, dTS: 120, Seq: 9
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +1, out +0
+Stats: Jitter = 17, Transit = 40
+In TS: 1560, dTS: 160, Seq: 10
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 16, Transit = 40
+In TS: 1720, dTS: 160, Seq: 11
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 15, Transit = 40
+In TS: 34688, dTS: 0, Seq: 12
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 34848, dTS: 160, Seq: 13
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 35008, dTS: 160, Seq: 14
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -32768
+In TS: 35128, dTS: 120, Seq: 15
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +1, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35288, dTS: 160, Seq: 16
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35448, dTS: 160, Seq: 17
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 2, Transit = -32728
+In TS: 35768, dTS: 160, Seq: 19
+Out TS change: 320, dTS: 160, Seq change: 2, TS Err change: in +0, out +0
+Stats: Jitter = 12, Transit = -32888
+In TS: 35928, dTS: 160, Seq: 20
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 11, Transit = -32888
+In TS: 36088, dTS: 160, Seq: 21
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 20, Transit = -33048
+In TS: 36088, dTS: 160, Seq: 21
+Out TS change: 0, dTS: 160, Seq change: 0, TS Err change: in +0, out +0
+Stats: Jitter = 29, Transit = -32888
+In TS: 36248, dTS: 160, Seq: 22
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 27, Transit = -32888
+In TS: 36408, dTS: 160, Seq: 23
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 25, Transit = -32888
+In TS: 36568, dTS: 160, Seq: 23
+Out TS change: 160, dTS: 160, Seq change: 0, TS Err change: in +1, out +1
+Stats: Jitter = 24, Transit = -32888
+In TS: 36728, dTS: 160, Seq: 24
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 22, Transit = -32888
+In TS: 36888, dTS: 160, Seq: 25
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 21, Transit = -32888
+In TS: 160000, dTS: 0, Seq: 1000
+Out TS change: 12000, dTS: 12000, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+In TS: 160160, dTS: 160, Seq: 1001
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+In TS: 160320, dTS: 160, Seq: 1002
+Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
+Stats: Jitter = 0, Transit = -144000
+Testing multiple payload types
+Testing no sequence flow on initial packet
+Testing no rtpmap name
+Done
diff --git a/tests/mgcp_client/Makefile.am b/tests/mgcp_client/Makefile.am
new file mode 100644
index 0000000..5cd0d8a
--- /dev/null
+++ b/tests/mgcp_client/Makefile.am
@@ -0,0 +1,39 @@
+AM_CPPFLAGS = \
+ $(all_includes) \
+ -I$(top_srcdir)/include \
+ -I$(top_builddir)/include \
+ -I$(top_srcdir) \
+ $(NULL)
+
+AM_CFLAGS = \
+ -Wall \
+ -ggdb3 \
+ $(LIBOSMOCORE_CFLAGS) \
+ $(LIBOSMONETIF_CFLAGS) \
+ $(COVERAGE_CFLAGS) \
+ $(NULL)
+
+AM_LDFLAGS = \
+ $(COVERAGE_LDFLAGS) \
+ $(NULL)
+
+EXTRA_DIST = \
+ mgcp_client_test.ok \
+ mgcp_client_test.err \
+ $(NULL)
+
+noinst_PROGRAMS = \
+ mgcp_client_test \
+ $(NULL)
+
+mgcp_client_test_SOURCES = \
+ mgcp_client_test.c \
+ $(NULL)
+
+mgcp_client_test_LDADD = \
+ $(top_builddir)/src/libosmo-mgcp-client/libosmo-mgcp-client.la \
+ $(LIBOSMOCORE_LIBS) \
+ $(LIBOSMOVTY_LIBS) \
+ $(LIBRARY_DL) \
+ $(LIBOSMONETIF_LIBS) \
+ $(NULL)
diff --git a/tests/mgcp_client/mgcp_client_test.c b/tests/mgcp_client/mgcp_client_test.c
new file mode 100644
index 0000000..513f345
--- /dev/null
+++ b/tests/mgcp_client/mgcp_client_test.c
@@ -0,0 +1,255 @@
+/*
+ * (C) 2016 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
+ * All Rights Reserved
+ *
+ * Author: Neels Hofmeyr
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <string.h>
+
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/application.h>
+#include <osmocom/mgcp_client/mgcp_client.h>
+#include <osmocom/mgcp_client/mgcp_client_internal.h>
+
+void *ctx;
+
+#define buf_len 4096
+
+#if 0
+static struct msgb *from_hex(const char *hex)
+{
+ struct msgb *msg = msgb_alloc(buf_len, "mgcpgw_test_from_hex");
+ unsigned int l = osmo_hexparse(hex, msg->data, buf_len);
+ msg->l2h = msgb_put(msg, l);
+ return msg;
+}
+
+static struct msgb *mgcp_from_str(const char *head, const char *params)
+{
+ struct msgb *msg = msgb_alloc(buf_len, "mgcp_from_str");
+ unsigned int l;
+ char *data;
+ l = strlen(head);
+ msg->l2h = msgb_put(msg, l);
+ data = (char*)msgb_l2(msg);
+ strncpy(data, head, l);
+
+ data = (char*)msgb_put(msg, 1);
+ *data = '\n';
+
+ l = strlen(params);
+ data = (char*)msgb_put(msg, l);
+ strncpy(data, params, l);
+
+ return msg;
+}
+#endif
+
+static struct msgb *from_str(const char *str)
+{
+ struct msgb *msg = msgb_alloc(buf_len, "from_str");
+ unsigned int l = strlen(str);
+ char *data;
+ msg->l2h = msgb_put(msg, l);
+ data = (char*)msgb_l2(msg);
+ strncpy(data, str, l);
+ return msg;
+}
+
+static struct mgcp_client_conf conf;
+struct mgcp_client *mgcp = NULL;
+
+static void reply_to(mgcp_trans_id_t trans_id, int code, const char *comment,
+ int conn_id, const char *params)
+{
+ static char compose[4096 - 128];
+ int len;
+
+ len = snprintf(compose, sizeof(compose),
+ "%d %u %s\r\nI: %d\n\n%s",
+ code, trans_id, comment, conn_id, params);
+ OSMO_ASSERT(len < sizeof(compose));
+ OSMO_ASSERT(len > 0);
+
+ printf("composed response:\n-----\n%s\n-----\n",
+ compose);
+ mgcp_client_rx(mgcp, from_str(compose));
+}
+
+void test_response_cb(struct mgcp_response *response, void *priv)
+{
+ OSMO_ASSERT(priv == mgcp);
+ mgcp_response_parse_params(response);
+
+ printf("response cb received:\n"
+ " head.response_code = %d\n"
+ " head.trans_id = %u\n"
+ " head.comment = %s\n"
+ " audio_port = %u\n"
+ " audio_ip = %s\n",
+ response->head.response_code,
+ response->head.trans_id,
+ response->head.comment,
+ response->audio_port,
+ response->audio_ip
+ );
+}
+
+mgcp_trans_id_t dummy_mgcp_send(struct msgb *msg)
+{
+ mgcp_trans_id_t trans_id;
+ trans_id = msg->cb[MSGB_CB_MGCP_TRANS_ID];
+ char *end;
+
+ OSMO_ASSERT(mgcp_client_pending_add(mgcp, trans_id, test_response_cb, mgcp));
+
+ end = (char*)msgb_put(msg, 1);
+ *end = '\0';
+ printf("composed:\n-----\n%s\n-----\n",
+ (char*)msgb_l2(msg));
+
+ talloc_free(msg);
+ return trans_id;
+}
+
+void test_crcx(void)
+{
+ struct msgb *msg;
+ mgcp_trans_id_t trans_id;
+
+ printf("\n===== %s =====\n", __func__);
+
+ if (mgcp)
+ talloc_free(mgcp);
+ mgcp = mgcp_client_init(ctx, &conf);
+
+ msg = mgcp_msg_crcx(mgcp, 23, 42, MGCP_CONN_LOOPBACK);
+ trans_id = dummy_mgcp_send(msg);
+
+ reply_to(trans_id, 200, "OK", 1,
+ "v=0\r\n"
+ "o=- 1 23 IN IP4 10.9.1.120\r\n"
+ "s=-\r\n"
+ "c=IN IP4 10.9.1.120\r\n"
+ "t=0 0\r\n"
+ "m=audio 16002 RTP/AVP 98\r\n"
+ "a=rtpmap:98 AMR/8000\r\n"
+ "a=ptime:20\r\n");
+}
+
+void test_mgcp_msg(void)
+{
+ struct msgb *msg;
+ char audio_ip_overflow[5000];
+
+ /* A message struct prefilled with some arbitary values */
+ struct mgcp_msg mgcp_msg = {
+ .audio_ip = "192.168.100.23",
+ .endpoint = "23@mgw",
+ .audio_port = 1234,
+ .call_id = 47,
+ .conn_id = 11,
+ .conn_mode = MGCP_CONN_RECV_SEND
+ };
+
+ if (mgcp)
+ talloc_free(mgcp);
+ mgcp = mgcp_client_init(ctx, &conf);
+
+ printf("\n");
+
+ printf("Generated CRCX message:\n");
+ mgcp_msg.verb = MGCP_VERB_CRCX;
+ mgcp_msg.presence =
+ (MGCP_MSG_PRESENCE_ENDPOINT | MGCP_MSG_PRESENCE_CALL_ID |
+ MGCP_MSG_PRESENCE_CONN_ID | MGCP_MSG_PRESENCE_CONN_MODE);
+ msg = mgcp_msg_gen(mgcp, &mgcp_msg);
+ printf("%s\n", (char *)msg->data);
+
+ printf("Generated MDCX message:\n");
+ mgcp_msg.verb = MGCP_VERB_MDCX;
+ mgcp_msg.presence =
+ (MGCP_MSG_PRESENCE_ENDPOINT | MGCP_MSG_PRESENCE_CALL_ID |
+ MGCP_MSG_PRESENCE_CONN_ID | MGCP_MSG_PRESENCE_CONN_MODE |
+ MGCP_MSG_PRESENCE_AUDIO_IP | MGCP_MSG_PRESENCE_AUDIO_PORT);
+ msg = mgcp_msg_gen(mgcp, &mgcp_msg);
+ printf("%s\n", (char *)msg->data);
+
+ printf("Generated DLCX message:\n");
+ mgcp_msg.verb = MGCP_VERB_DLCX;
+ mgcp_msg.presence =
+ (MGCP_MSG_PRESENCE_ENDPOINT | MGCP_MSG_PRESENCE_CALL_ID |
+ MGCP_MSG_PRESENCE_CONN_ID);
+ msg = mgcp_msg_gen(mgcp, &mgcp_msg);
+ printf("%s\n", (char *)msg->data);
+
+ printf("Generated AUEP message:\n");
+ mgcp_msg.verb = MGCP_VERB_AUEP;
+ mgcp_msg.presence = (MGCP_MSG_PRESENCE_ENDPOINT);
+ msg = mgcp_msg_gen(mgcp, &mgcp_msg);
+ printf("%s\n", msg->data);
+
+ printf("Generated RSIP message:\n");
+ mgcp_msg.verb = MGCP_VERB_RSIP;
+ mgcp_msg.presence = (MGCP_MSG_PRESENCE_ENDPOINT);
+ msg = mgcp_msg_gen(mgcp, &mgcp_msg);
+ printf("%s\n", (char *)msg->data);
+
+ printf("Overfolow test:\n");
+ mgcp_msg.verb = MGCP_VERB_MDCX;
+ mgcp_msg.presence =
+ (MGCP_MSG_PRESENCE_ENDPOINT | MGCP_MSG_PRESENCE_CALL_ID |
+ MGCP_MSG_PRESENCE_CONN_ID | MGCP_MSG_PRESENCE_CONN_MODE |
+ MGCP_MSG_PRESENCE_AUDIO_IP | MGCP_MSG_PRESENCE_AUDIO_PORT);
+ memset(audio_ip_overflow, 'X', sizeof(audio_ip_overflow));
+ audio_ip_overflow[sizeof(audio_ip_overflow) - 1] = '\0';
+ mgcp_msg.audio_ip = audio_ip_overflow;
+ msg = mgcp_msg_gen(mgcp, &mgcp_msg);
+ OSMO_ASSERT(msg == NULL);
+
+ printf("\n");
+ msgb_free(msg);
+}
+
+static const struct log_info_cat log_categories[] = {
+};
+
+const struct log_info log_info = {
+ .cat = log_categories,
+ .num_cat = ARRAY_SIZE(log_categories),
+};
+
+
+int main(int argc, char **argv)
+{
+ ctx = talloc_named_const(NULL, 1, "mgcp_client_test");
+ msgb_talloc_ctx_init(ctx, 0);
+ osmo_init_logging(&log_info);
+ log_set_print_filename(osmo_stderr_target, 0);
+ log_set_print_timestamp(osmo_stderr_target, 0);
+ log_set_use_color(osmo_stderr_target, 0);
+ log_set_print_category(osmo_stderr_target, 1);
+
+ mgcp_client_conf_init(&conf);
+
+ test_crcx();
+ test_mgcp_msg();
+
+ printf("Done\n");
+ fprintf(stderr, "Done\n");
+ return EXIT_SUCCESS;
+}
diff --git a/tests/mgcp_client/mgcp_client_test.err b/tests/mgcp_client/mgcp_client_test.err
new file mode 100644
index 0000000..24151ee
--- /dev/null
+++ b/tests/mgcp_client/mgcp_client_test.err
@@ -0,0 +1,2 @@
+DLMGCP message buffer to small, can not generate MGCP message
+Done
diff --git a/tests/mgcp_client/mgcp_client_test.ok b/tests/mgcp_client/mgcp_client_test.ok
new file mode 100644
index 0000000..d4efee4
--- /dev/null
+++ b/tests/mgcp_client/mgcp_client_test.ok
@@ -0,0 +1,62 @@
+
+===== test_crcx =====
+composed:
+-----
+CRCX 1 17@mgw MGCP 1.0
+C: 2a
+L: p:20, a:AMR, nt:IN
+M: loopback
+
+-----
+composed response:
+-----
+200 1 OK
+I: 1
+
+v=0
+o=- 1 23 IN IP4 10.9.1.120
+s=-
+c=IN IP4 10.9.1.120
+t=0 0
+m=audio 16002 RTP/AVP 98
+a=rtpmap:98 AMR/8000
+a=ptime:20
+
+-----
+response cb received:
+ head.response_code = 200
+ head.trans_id = 1
+ head.comment = OK
+ audio_port = 16002
+ audio_ip = 10.9.1.120
+
+Generated CRCX message:
+CRCX 1 23@mgw MGCP 1.0
+C: 2f
+I: 11
+L: p:20, a:AMR, nt:IN
+M: sendrecv
+
+Generated MDCX message:
+MDCX 2 23@mgw MGCP 1.0
+C: 2f
+I: 11
+M: sendrecv
+
+c=IN IP4 192.168.100.23
+m=audio 1234 RTP/AVP 255
+
+Generated DLCX message:
+DLCX 3 23@mgw MGCP 1.0
+C: 2f
+I: 11
+
+Generated AUEP message:
+AUEP 4 23@mgw MGCP 1.0
+
+Generated RSIP message:
+RSIP 5 23@mgw MGCP 1.0
+
+Overfolow test:
+
+Done
diff --git a/tests/testsuite.at b/tests/testsuite.at
new file mode 100644
index 0000000..03ec4b9
--- /dev/null
+++ b/tests/testsuite.at
@@ -0,0 +1,28 @@
+AT_INIT
+AT_BANNER([Regression tests.])
+
+AT_SETUP([legacy_mgcp])
+AT_KEYWORDS([legacy_mgcp])
+cat $abs_srcdir/legacy_mgcp/mgcp_test.ok > expout
+AT_CHECK([$abs_top_builddir/tests/legacy_mgcp/mgcp_test], [], [expout], [ignore])
+AT_CLEANUP
+
+AT_SETUP([legacy_mgcp-trans])
+AT_KEYWORDS([legacy_mgcp-trans])
+AT_CHECK([test "$enable_mgcp_transcoding_test" == yes || exit 77])
+cat $abs_srcdir/legacy_mgcp/mgcp_transcoding_test.ok > expout
+AT_CHECK([$abs_top_builddir/tests/legacy_mgcp/mgcp_transcoding_test], [], [expout], [ignore])
+AT_CLEANUP
+
+AT_SETUP([mgcp_client])
+AT_KEYWORDS([mgcp_client])
+cat $abs_srcdir/mgcp_client/mgcp_client_test.ok > expout
+cat $abs_srcdir/mgcp_client/mgcp_client_test.err > experr
+AT_CHECK([$abs_top_builddir/tests/mgcp_client/mgcp_client_test], [], [expout], [experr])
+AT_CLEANUP
+
+AT_SETUP([mgcp])
+AT_KEYWORDS([mgcp])
+cat $abs_srcdir/mgcp/mgcp_test.ok > expout
+AT_CHECK([$abs_top_builddir/tests/mgcp/mgcp_test], [], [expout], [ignore])
+AT_CLEANUP
diff --git a/tests/vty_test_runner.py b/tests/vty_test_runner.py
new file mode 100644
index 0000000..05bc3bf
--- /dev/null
+++ b/tests/vty_test_runner.py
@@ -0,0 +1,171 @@
+#!/usr/bin/env python
+
+# (C) 2013 by Katerina Barone-Adesi <kat.obsc@gmail.com>
+# (C) 2013 by Holger Hans Peter Freyther
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+import os, sys
+import time
+import unittest
+import socket
+import subprocess
+
+import osmopy.obscvty as obscvty
+import osmopy.osmoutil as osmoutil
+
+# add $top_srcdir/contrib to find ipa.py
+sys.path.append(os.path.join(sys.path[0], '..', 'contrib'))
+
+from ipa import IPA
+
+# to be able to find $top_srcdir/doc/...
+confpath = os.path.join(sys.path[0], '..')
+
+class TestVTYBase(unittest.TestCase):
+
+ def checkForEndAndExit(self):
+ res = self.vty.command("list")
+ #print ('looking for "exit"\n')
+ self.assert_(res.find(' exit\r') > 0)
+ #print 'found "exit"\nlooking for "end"\n'
+ self.assert_(res.find(' end\r') > 0)
+ #print 'found "end"\n'
+
+ def vty_command(self):
+ raise Exception("Needs to be implemented by a subclass")
+
+ def vty_app(self):
+ raise Exception("Needs to be implemented by a subclass")
+
+ def setUp(self):
+ osmo_vty_cmd = self.vty_command()[:]
+ config_index = osmo_vty_cmd.index('-c')
+ if config_index:
+ cfi = config_index + 1
+ osmo_vty_cmd[cfi] = os.path.join(confpath, osmo_vty_cmd[cfi])
+
+ try:
+ self.proc = osmoutil.popen_devnull(osmo_vty_cmd)
+ except OSError:
+ print >> sys.stderr, "Current directory: %s" % os.getcwd()
+ print >> sys.stderr, "Consider setting -b"
+
+ appstring = self.vty_app()[2]
+ appport = self.vty_app()[0]
+ self.vty = obscvty.VTYInteract(appstring, "127.0.0.1", appport)
+
+ def tearDown(self):
+ if self.vty:
+ self.vty._close_socket()
+ self.vty = None
+ osmoutil.end_proc(self.proc)
+
+class TestVTYMGCP(TestVTYBase):
+ def vty_command(self):
+ return ["./src/osmo-bsc_mgcp/osmo-bsc_mgcp", "-c",
+ "doc/examples/osmo-bsc_mgcp/mgcp.cfg"]
+
+ def vty_app(self):
+ return (4243, "./src/osmo-bsc_mgcp/osmo-bsc_mgcp", "OpenBSC MGCP", "mgcp")
+
+ def testForcePtime(self):
+ self.vty.enable()
+ res = self.vty.command("show running-config")
+ self.assert_(res.find(' rtp force-ptime 20\r') > 0)
+ self.assertEquals(res.find(' no rtp force-ptime\r'), -1)
+
+ self.vty.command("configure terminal")
+ self.vty.command("mgcp")
+ self.vty.command("no rtp force-ptime")
+ res = self.vty.command("show running-config")
+ self.assertEquals(res.find(' rtp force-ptime 20\r'), -1)
+ self.assertEquals(res.find(' no rtp force-ptime\r'), -1)
+
+ def testOmitAudio(self):
+ self.vty.enable()
+ res = self.vty.command("show running-config")
+ self.assert_(res.find(' sdp audio-payload send-name\r') > 0)
+ self.assertEquals(res.find(' no sdp audio-payload send-name\r'), -1)
+
+ self.vty.command("configure terminal")
+ self.vty.command("mgcp")
+ self.vty.command("no sdp audio-payload send-name")
+ res = self.vty.command("show running-config")
+ self.assertEquals(res.find(' rtp sdp audio-payload send-name\r'), -1)
+ self.assert_(res.find(' no sdp audio-payload send-name\r') > 0)
+
+ # TODO: test it for the trunk!
+
+ def testBindAddr(self):
+ self.vty.enable()
+
+ self.vty.command("configure terminal")
+ self.vty.command("mgcp")
+
+ # enable.. disable bts-bind-ip
+ self.vty.command("rtp bts-bind-ip 254.253.252.250")
+ res = self.vty.command("show running-config")
+ self.assert_(res.find('rtp bts-bind-ip 254.253.252.250') > 0)
+ self.vty.command("no rtp bts-bind-ip")
+ res = self.vty.command("show running-config")
+ self.assertEquals(res.find(' rtp bts-bind-ip'), -1)
+
+ # enable.. disable net-bind-ip
+ self.vty.command("rtp net-bind-ip 254.253.252.250")
+ res = self.vty.command("show running-config")
+ self.assert_(res.find('rtp net-bind-ip 254.253.252.250') > 0)
+ self.vty.command("no rtp net-bind-ip")
+ res = self.vty.command("show running-config")
+ self.assertEquals(res.find(' rtp net-bind-ip'), -1)
+
+
+if __name__ == '__main__':
+ import argparse
+ import sys
+
+ workdir = '.'
+
+ parser = argparse.ArgumentParser()
+ parser.add_argument("-v", "--verbose", dest="verbose",
+ action="store_true", help="verbose mode")
+ parser.add_argument("-p", "--pythonconfpath", dest="p",
+ help="searchpath for config")
+ parser.add_argument("-w", "--workdir", dest="w",
+ help="Working directory")
+ parser.add_argument("test_name", nargs="*", help="(parts of) test names to run, case-insensitive")
+ args = parser.parse_args()
+
+ verbose_level = 1
+ if args.verbose:
+ verbose_level = 2
+
+ if args.w:
+ workdir = args.w
+
+ if args.p:
+ confpath = args.p
+
+ print "confpath %s, workdir %s" % (confpath, workdir)
+ os.chdir(workdir)
+ print "Running tests for specific VTY commands"
+ suite = unittest.TestSuite()
+ suite.addTest(unittest.TestLoader().loadTestsFromTestCase(TestVTYMGCP))
+
+ if args.test_name:
+ osmoutil.pick_tests(suite, *args.test_name)
+
+ res = unittest.TextTestRunner(verbosity=verbose_level, stream=sys.stdout).run(suite)
+ sys.exit(len(res.errors) + len(res.failures))
+
+# vim: shiftwidth=4 expandtab nocin ai