diff options
author | Andrew G. Morgan <morgan@kernel.org> | 2000-06-20 22:10:38 +0000 |
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committer | Andrew G. Morgan <morgan@kernel.org> | 2000-06-20 22:10:38 +0000 |
commit | ea488580c42e8918445a945484de3c8a5addc761 (patch) | |
tree | c992f3ba699caafedfadc16af38e6359c3c24698 /modules/pam_motd |
Initial revision
Diffstat (limited to 'modules/pam_motd')
-rw-r--r-- | modules/pam_motd/.cvsignore | 1 | ||||
-rw-r--r-- | modules/pam_motd/Makefile | 90 | ||||
-rw-r--r-- | modules/pam_motd/pam_motd.c | 119 |
3 files changed, 210 insertions, 0 deletions
diff --git a/modules/pam_motd/.cvsignore b/modules/pam_motd/.cvsignore new file mode 100644 index 00000000..380a834a --- /dev/null +++ b/modules/pam_motd/.cvsignore @@ -0,0 +1 @@ +dynamic diff --git a/modules/pam_motd/Makefile b/modules/pam_motd/Makefile new file mode 100644 index 00000000..ef9f3113 --- /dev/null +++ b/modules/pam_motd/Makefile @@ -0,0 +1,90 @@ +# +# $Id$ +# +# This Makefile controls a build process of $(TITLE) module for +# Linux-PAM. You should not modify this Makefile (unless you know +# what you are doing!). +# +# Created by Andrew Morgan <morgan@parc.power.net> 1996/3/11 +# + +# Convenient defaults for compiling independently of the full source +# tree. + +# + +TITLE=pam_motd + +# + +LIBSRC = $(TITLE).c +LIBOBJ = $(TITLE).o +LIBOBJD = $(addprefix dynamic/,$(LIBOBJ)) +LIBOBJS = $(addprefix static/,$(LIBOBJ)) + +dynamic/%.o : %.c + $(CC) $(CFLAGS) $(DYNAMIC) $(CPPFLAGS) $(TARGET_ARCH) -c $< -o $@ + +static/%.o : %.c + $(CC) $(CFLAGS) $(STATIC) $(CPPFLAGS) $(TARGET_ARCH) -c $< -o $@ + + +ifdef DYNAMIC +LIBSHARED = $(TITLE).so +endif +ifdef STATIC +LIBSTATIC = lib$(TITLE).o +endif + +####################### don't edit below ####################### + +dummy: + @echo "**** This is not a top-level Makefile " + exit + +all: dirs $(LIBSHARED) $(LIBSTATIC) register + +dirs: +ifdef DYNAMIC + $(MKDIR) ./dynamic +endif +ifdef STATIC + $(MKDIR) ./static +endif + +register: +ifdef STATIC + ( cd .. ; ./register_static $(TITLE) $(TITLE)/$(LIBSTATIC) ) +endif + +ifdef DYNAMIC +$(LIBOBJD): $(LIBSRC) + +$(LIBSHARED): $(LIBOBJD) + $(LD_D) -o $@ $(LIBOBJD) $(LINKLIBS) +endif + +ifdef STATIC +$(LIBOBJS): $(LIBSRC) + +$(LIBSTATIC): $(LIBOBJS) + $(LD) -r -o $@ $(LIBOBJS) +endif + +install: all + $(MKDIR) $(FAKEROOT)$(SECUREDIR) +ifdef DYNAMIC + $(INSTALL) -m $(SHLIBMODE) $(LIBSHARED) $(FAKEROOT)$(SECUREDIR) +endif + +remove: + rm -f $(FAKEROOT)$(SECUREDIR)/$(TITLE).so + +clean: + rm -f $(LIBOBJD) $(LIBOBJS) core *~ + +extraclean: clean + rm -f *.a *.o *.so *.bak + +.c.o: + $(CC) $(CFLAGS) -c $< diff --git a/modules/pam_motd/pam_motd.c b/modules/pam_motd/pam_motd.c new file mode 100644 index 00000000..98976b66 --- /dev/null +++ b/modules/pam_motd/pam_motd.c @@ -0,0 +1,119 @@ +/* pam_motd module */ + +/* + * Modified for pam_motd by Ben Collins <bcollins@debian.org> + * + * Based off of: + * $Id$ + * + * Written by Michael K. Johnson <johnsonm@redhat.com> 1996/10/24 + * + */ + +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <pwd.h> + +#include <security/_pam_macros.h> +/* + * here, we make a definition for the externally accessible function + * in this file (this definition is required for static a module + * but strongly encouraged generally) it is used to instruct the + * modules include file to define the function prototypes. + */ + +#define PAM_SM_SESSION +#define DEFAULT_MOTD "/etc/motd" + +#include <security/pam_modules.h> + +/* --- session management functions (only) --- */ + +PAM_EXTERN +int pam_sm_close_session(pam_handle_t *pamh, int flags, int argc, + const char **argv) +{ + return PAM_IGNORE; +} + +PAM_EXTERN +int pam_sm_open_session(pam_handle_t *pamh, int flags, int argc, + const char **argv) +{ + int retval = PAM_IGNORE; + int fd; + char *mtmp=NULL, *motd_path=NULL; + struct pam_conv *conversation; + struct pam_message message; + struct pam_message *pmessage = &message; + struct pam_response *resp = NULL; + struct stat st; + + if (flags & PAM_SILENT) { + return retval; + } + + for (; argc-- > 0; ++argv) { + if (!strncmp(*argv,"motd=",5)) { + motd_path = (char *) strdup(5+*argv); + if (motd_path != NULL) { + D(("set motd path: %s", motd_path)); + } else { + D(("failed to duplicate motd path - ignored")); + } + } + } + + if (motd_path == NULL) + motd_path = DEFAULT_MOTD; + + message.msg_style = PAM_TEXT_INFO; + + if ((fd = open(motd_path, O_RDONLY, 0)) >= 0) { + /* fill in message buffer with contents of motd */ + if ((fstat(fd, &st) < 0) || !st.st_size) + return retval; + message.msg = mtmp = malloc(st.st_size+1); + /* if malloc failed... */ + if (!message.msg) return retval; + read(fd, mtmp, st.st_size); + if (mtmp[st.st_size-1] == '\n') + mtmp[st.st_size-1] = '\0'; + else + mtmp[st.st_size] = '\0'; + close(fd); + /* Use conversation function to give user contents of motd */ + pam_get_item(pamh, PAM_CONV, (const void **)&conversation); + conversation->conv(1, (const struct pam_message **)&pmessage, + &resp, conversation->appdata_ptr); + free(mtmp); + if (resp) + _pam_drop_reply(resp, 1); + } + + return retval; +} + + +#ifdef PAM_STATIC + +/* static module data */ + +struct pam_module _pam_motd_modstruct = { + "pam_motd", + NULL, + NULL, + NULL, + pam_sm_open_session, + pam_sm_close_session, + NULL, +}; + +#endif + +/* end of module definition */ |