diff options
Diffstat (limited to 'modules/pam_mkhomedir')
| -rw-r--r-- | modules/pam_mkhomedir/Makefile.am | 33 | ||||
| -rw-r--r-- | modules/pam_mkhomedir/Makefile.in | 668 | ||||
| -rw-r--r-- | modules/pam_mkhomedir/README | 36 | ||||
| -rw-r--r-- | modules/pam_mkhomedir/README.xml | 36 | ||||
| -rw-r--r-- | modules/pam_mkhomedir/pam_mkhomedir.8 | 109 | ||||
| -rw-r--r-- | modules/pam_mkhomedir/pam_mkhomedir.8.xml | 203 | ||||
| -rw-r--r-- | modules/pam_mkhomedir/pam_mkhomedir.c | 511 | ||||
| -rwxr-xr-x | modules/pam_mkhomedir/tst-pam_mkhomedir | 2 |
8 files changed, 1598 insertions, 0 deletions
diff --git a/modules/pam_mkhomedir/Makefile.am b/modules/pam_mkhomedir/Makefile.am new file mode 100644 index 00000000..7ed3a9f0 --- /dev/null +++ b/modules/pam_mkhomedir/Makefile.am @@ -0,0 +1,33 @@ +# +# Copyright (c) 2005, 2006 Thorsten Kukuk <kukuk@suse.de> +# + +CLEANFILES = *~ + +EXTRA_DIST = README $(MANS) $(XMLS) tst-pam_mkhomedir + +man_MANS = pam_mkhomedir.8 + +XMLS = README.xml pam_mkhomedir.8.xml + +TESTS = tst-pam_mkhomedir + +securelibdir = $(SECUREDIR) +secureconfdir = $(SCONFIGDIR) + +AM_CFLAGS = -I$(top_srcdir)/libpam/include -I$(top_srcdir)/libpamc/include +AM_LDFLAGS = -no-undefined -avoid-version -module +if HAVE_VERSIONING + AM_LDFLAGS += -Wl,--version-script=$(srcdir)/../modules.map +endif + +securelib_LTLIBRARIES = pam_mkhomedir.la +pam_mkhomedir_la_SOURCES = pam_mkhomedir.c +pam_mkhomedir_la_LIBADD = -L$(top_builddir)/libpam -lpam + +if ENABLE_REGENERATE_MAN +noinst_DATA = README +README: pam_mkhomedir.8.xml +-include $(top_srcdir)/Make.xml.rules +endif + diff --git a/modules/pam_mkhomedir/Makefile.in b/modules/pam_mkhomedir/Makefile.in new file mode 100644 index 00000000..24cb3b73 --- /dev/null +++ b/modules/pam_mkhomedir/Makefile.in @@ -0,0 +1,668 @@ +# Makefile.in generated by automake 1.10.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +# +# Copyright (c) 2005, 2006 Thorsten Kukuk <kukuk@suse.de> +# + + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkglibdir = 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install-html-am install-info \ + install-info-am install-man install-man8 install-pdf \ + install-pdf-am install-ps install-ps-am \ + install-securelibLTLIBRARIES install-strip installcheck \ + installcheck-am installdirs maintainer-clean \ + maintainer-clean-generic mostlyclean mostlyclean-compile \ + mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \ + tags uninstall uninstall-am uninstall-man uninstall-man8 \ + uninstall-securelibLTLIBRARIES + +@ENABLE_REGENERATE_MAN_TRUE@README: pam_mkhomedir.8.xml +@ENABLE_REGENERATE_MAN_TRUE@-include $(top_srcdir)/Make.xml.rules +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/modules/pam_mkhomedir/README b/modules/pam_mkhomedir/README new file mode 100644 index 00000000..64810060 --- /dev/null +++ b/modules/pam_mkhomedir/README @@ -0,0 +1,36 @@ +pam_mkhomedir — PAM module to create users home directory + +━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ + +DESCRIPTION + +The pam_mkhomedir PAM module will create a users home directory if it does not +exist when the session begins. This allows users to be present in central +database (such as NIS, kerberos or LDAP) without using a distributed file +system or pre-creating a large number of directories. The skeleton directory +(usually /etc/skel/) is used to copy default files and also set's a umask for +the creation. + +The new users home directory will not be removed after logout of the user. + +EXAMPLES + +A sample /etc/pam.d/login file: + + auth requisite pam_securetty.so + auth sufficient pam_ldap.so + auth required pam_unix.so + auth required pam_nologin.so + account sufficient pam_ldap.so + account required pam_unix.so + password required pam_unix.so + session required pam_mkhomedir.so skel=/etc/skel/ umask=0022 + session required pam_unix.so + session optional pam_lastlog.so + session optional pam_mail.so standard + + +AUTHOR + +pam_mkhomedir was written by Jason Gunthorpe <jgg@debian.org>. + diff --git a/modules/pam_mkhomedir/README.xml b/modules/pam_mkhomedir/README.xml new file mode 100644 index 00000000..978cbe77 --- /dev/null +++ b/modules/pam_mkhomedir/README.xml @@ -0,0 +1,36 @@ +<?xml version="1.0" encoding='UTF-8'?> +<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN" +"http://www.docbook.org/xml/4.3/docbookx.dtd" +[ +<!-- +<!ENTITY pamaccess SYSTEM "pam_mkhomedir.8.xml"> +--> +]> + +<article> + + <articleinfo> + + <title> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_mkhomedir.8.xml" xpointer='xpointer(//refnamediv[@id = "pam_mkhomedir-name"]/*)'/> + </title> + + </articleinfo> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_mkhomedir.8.xml" xpointer='xpointer(//refsect1[@id = "pam_mkhomedir-description"]/*)'/> + </section> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_mkhomedir.8.xml" xpointer='xpointer(//refsect1[@id = "pam_mkhomedir-examples"]/*)'/> + </section> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_mkhomedir.8.xml" xpointer='xpointer(//refsect1[@id = "pam_mkhomedir-author"]/*)'/> + </section> + +</article> diff --git a/modules/pam_mkhomedir/pam_mkhomedir.8 b/modules/pam_mkhomedir/pam_mkhomedir.8 new file mode 100644 index 00000000..cab1fda1 --- /dev/null +++ b/modules/pam_mkhomedir/pam_mkhomedir.8 @@ -0,0 +1,109 @@ +.\" Title: pam_mkhomedir +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_MKHOMEDIR" "8" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_mkhomedir - PAM module to create users home directory +.SH "SYNOPSIS" +.HP 17 +\fBpam_mkhomedir\.so\fR [silent] [umask=\fImode\fR] [skel=\fIskeldir\fR] +.SH "DESCRIPTION" +.PP +The pam_mkhomedir PAM module will create a users home directory if it does not exist when the session begins\. This allows users to be present in central database (such as NIS, kerberos or LDAP) without using a distributed file system or pre\-creating a large number of directories\. The skeleton directory (usually +\fI/etc/skel/\fR) is used to copy default files and also set\'s a umask for the creation\. +.PP +The new users home directory will not be removed after logout of the user\. +.SH "OPTIONS" +.PP +\fBsilent\fR +.RS 4 +Don\'t print informative messages\. +.RE +.PP +\fBumask=\fR\fB\fImask\fR\fR +.RS 4 +The user file\-creation mask is set to +\fImask\fR\. The default value of mask is 0022\. +.RE +.PP +\fBskel=\fR\fB\fI/path/to/skel/directory\fR\fR +.RS 4 +Indicate an alternative +\fIskel\fR +directory to override the default +\fI/etc/skel\fR\. +.RE +.SH "MODULE SERVICES PROVIDED" +.PP +Only the +\fBsession\fR +service is supported\. +.SH "RETURN VALUES" +.PP +PAM_BUF_ERR +.RS 4 +Memory buffer error\. +.RE +.PP +PAM_CRED_INSUFFICIENT +.RS 4 +Insufficient credentials to access authentication data\. +.RE +.PP +PAM_PERM_DENIED +.RS 4 +Not enough permissions to create the new directory or read the skel directory\. +.RE +.PP +PAM_USER_UNKNOWN +.RS 4 +User not known to the underlying authentication module\. +.RE +.PP +PAM_SUCCESS +.RS 4 +Environment variables were set\. +.RE +.SH "FILES" +.PP +\fI/etc/skel\fR +.RS 4 +Default skel directory +.RE +.SH "EXAMPLES" +.PP +A sample /etc/pam\.d/login file: +.sp +.RS 4 +.nf + auth requisite pam_securetty\.so + auth sufficient pam_ldap\.so + auth required pam_unix\.so + auth required pam_nologin\.so + account sufficient pam_ldap\.so + account required pam_unix\.so + password required pam_unix\.so + session required pam_mkhomedir\.so skel=/etc/skel/ umask=0022 + session required pam_unix\.so + session optional pam_lastlog\.so + session optional pam_mail\.so standard + +.fi +.RE +.sp +.SH "SEE ALSO" +.PP + +\fBpam.d\fR(8), +\fBpam\fR(8)\. +.SH "AUTHOR" +.PP +pam_mkhomedir was written by Jason Gunthorpe <jgg@debian\.org>\. diff --git a/modules/pam_mkhomedir/pam_mkhomedir.8.xml b/modules/pam_mkhomedir/pam_mkhomedir.8.xml new file mode 100644 index 00000000..3c40de15 --- /dev/null +++ b/modules/pam_mkhomedir/pam_mkhomedir.8.xml @@ -0,0 +1,203 @@ +<?xml version="1.0" encoding="ISO-8859-1"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id='pam_mkhomedir'> + + <refmeta> + <refentrytitle>pam_mkhomedir</refentrytitle> + <manvolnum>8</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id='pam_mkhomedir-name'> + <refname>pam_mkhomedir</refname> + <refpurpose> + PAM module to create users home directory + </refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <cmdsynopsis id="pam_mkhomedir-cmdsynopsis"> + <command>pam_mkhomedir.so</command> + <arg choice="opt"> + silent + </arg> + <arg choice="opt"> + umask=<replaceable>mode</replaceable> + </arg> + <arg choice="opt"> + skel=<replaceable>skeldir</replaceable> + </arg> + </cmdsynopsis> + </refsynopsisdiv> + + + <refsect1 id="pam_mkhomedir-description"> + <title>DESCRIPTION</title> + <para> + The pam_mkhomedir PAM module will create a users home directory + if it does not exist when the session begins. This allows users + to be present in central database (such as NIS, kerberos or LDAP) + without using a distributed file system or pre-creating a large + number of directories. The skeleton directory (usually + <filename>/etc/skel/</filename>) is used to copy default files + and also set's a umask for the creation. + </para> + <para> + The new users home directory will not be removed after logout + of the user. + </para> + </refsect1> + + <refsect1 id="pam_mkhomedir-options"> + <title>OPTIONS</title> + <variablelist> + + <varlistentry> + <term> + <option>silent</option> + </term> + <listitem> + <para> + Don't print informative messages. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term> + <option>umask=<replaceable>mask</replaceable></option> + </term> + <listitem> + <para> + The user file-creation mask is set to + <replaceable>mask</replaceable>. The default value of mask is + 0022. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term> + <option>skel=<replaceable>/path/to/skel/directory</replaceable></option> + </term> + <listitem> + <para> + Indicate an alternative <filename>skel</filename> directory + to override the default <filename>/etc/skel</filename>. + </para> + </listitem> + </varlistentry> + + </variablelist> + </refsect1> + + <refsect1 id="pam_mkhomedir-services"> + <title>MODULE SERVICES PROVIDED</title> + <para> + Only the <option>session</option> service is supported. + </para> + </refsect1> + + <refsect1 id="pam_mkhomedir-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_BUF_ERR</term> + <listitem> + <para> + Memory buffer error. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CRED_INSUFFICIENT</term> + <listitem> + <para> + Insufficient credentials to access authentication data. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_PERM_DENIED</term> + <listitem> + <para> + Not enough permissions to create the new directory + or read the skel directory. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_USER_UNKNOWN</term> + <listitem> + <para> + User not known to the underlying authentication module. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + Environment variables were set. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_mkhomedir-files"> + <title>FILES</title> + <variablelist> + <varlistentry> + <term><filename>/etc/skel</filename></term> + <listitem> + <para>Default skel directory</para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id='pam_mkhomedir-examples'> + <title>EXAMPLES</title> + <para> + A sample /etc/pam.d/login file: + <programlisting> + auth requisite pam_securetty.so + auth sufficient pam_ldap.so + auth required pam_unix.so + auth required pam_nologin.so + account sufficient pam_ldap.so + account required pam_unix.so + password required pam_unix.so + session required pam_mkhomedir.so skel=/etc/skel/ umask=0022 + session required pam_unix.so + session optional pam_lastlog.so + session optional pam_mail.so standard + </programlisting> + </para> + </refsect1> + + + <refsect1 id="pam_mkhomedir-see_also"> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam.d</refentrytitle><manvolnum>8</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry>. + </para> + </refsect1> + + <refsect1 id="pam_mkhomedir-author"> + <title>AUTHOR</title> + <para> + pam_mkhomedir was written by Jason Gunthorpe <jgg@debian.org>. + </para> + </refsect1> +</refentry> diff --git a/modules/pam_mkhomedir/pam_mkhomedir.c b/modules/pam_mkhomedir/pam_mkhomedir.c new file mode 100644 index 00000000..44b092c1 --- /dev/null +++ b/modules/pam_mkhomedir/pam_mkhomedir.c @@ -0,0 +1,511 @@ +/* PAM Make Home Dir module + + This module will create a users home directory if it does not exist + when the session begins. This allows users to be present in central + database (such as nis, kerb or ldap) without using a distributed + file system or pre-creating a large number of directories. + + Here is a sample /etc/pam.d/login file for Debian GNU/Linux + 2.1: + + auth requisite pam_securetty.so + auth sufficient pam_ldap.so + auth required pam_unix.so + auth optional pam_group.so + auth optional pam_mail.so + account requisite pam_time.so + account sufficient pam_ldap.so + account required pam_unix.so + session required pam_mkhomedir.so skel=/etc/skel/ umask=0022 + session required pam_unix.so + session optional pam_lastlog.so + password required pam_unix.so + + Released under the GNU LGPL version 2 or later + Originally written by Jason Gunthorpe <jgg@debian.org> Feb 1999 + Structure taken from pam_lastlogin by Andrew Morgan + <morgan@parc.power.net> 1996 + */ + +#include "config.h" + +#include <stdarg.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <unistd.h> +#include <pwd.h> +#include <errno.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <dirent.h> +#include <syslog.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 + +#include <security/pam_modules.h> +#include <security/_pam_macros.h> +#include <security/pam_modutil.h> +#include <security/pam_ext.h> + + +/* argument parsing */ +#define MKHOMEDIR_DEBUG 020 /* be verbose about things */ +#define MKHOMEDIR_QUIET 040 /* keep quiet about things */ + +static unsigned int UMask = 0022; +static char SkelDir[BUFSIZ] = "/etc/skel"; /* THIS MODULE IS NOT THREAD SAFE */ + +static int +_pam_parse (const pam_handle_t *pamh, int flags, int argc, const char **argv) +{ + int ctrl = 0; + + /* does the appliction require quiet? */ + if ((flags & PAM_SILENT) == PAM_SILENT) + ctrl |= MKHOMEDIR_QUIET; + + /* step through arguments */ + for (; argc-- > 0; ++argv) + { + if (!strcmp(*argv, "silent")) { + ctrl |= MKHOMEDIR_QUIET; + } else if (!strcmp(*argv, "debug")) { + ctrl |= MKHOMEDIR_DEBUG; + } else if (!strncmp(*argv,"umask=",6)) { + UMask = strtol(*argv+6,0,0); + } else if (!strncmp(*argv,"skel=",5)) { + strncpy(SkelDir,*argv+5,sizeof(SkelDir)); + SkelDir[sizeof(SkelDir)-1] = '\0'; + } else { + pam_syslog(pamh, LOG_ERR, "unknown option: %s", *argv); + } + } + + D(("ctrl = %o", ctrl)); + return ctrl; +} + +static int +rec_mkdir (const char *dir, mode_t mode) +{ + char *cp; + char *parent = strdup (dir); + + if (parent == NULL) + return 1; + + cp = strrchr (parent, '/'); + + if (cp != NULL && cp != parent) + { + struct stat st; + + *cp++ = '\0'; + if (stat (parent, &st) == -1 && errno == ENOENT) + if (rec_mkdir (parent, mode) != 0) + { + free (parent); + return 1; + } + } + + free (parent); + + if (mkdir (dir, mode) != 0 && errno != EEXIST) + return 1; + + return 0; +} + +/* Do the actual work of creating a home dir */ +static int +create_homedir (pam_handle_t * pamh, int ctrl, + const struct passwd *pwd, + const char *source, const char *dest) +{ + char remark[BUFSIZ]; + DIR *D; + struct dirent *Dir; + int retval = PAM_AUTH_ERR; + + /* Mention what is happening, if the notification fails that is OK */ + if ((ctrl & MKHOMEDIR_QUIET) != MKHOMEDIR_QUIET) + pam_info(pamh, _("Creating directory '%s'."), dest); + + /* Create the new directory */ + if (rec_mkdir (dest,0755) != 0) + { + pam_error(pamh, _("Unable to create directory %s: %m"), dest); + pam_syslog(pamh, LOG_ERR, "unable to create directory %s: %m", dest); + return PAM_PERM_DENIED; + } + + /* See if we need to copy the skel dir over. */ + if ((source == NULL) || (strlen(source) == 0)) + { + retval = PAM_SUCCESS; + goto go_out; + } + + /* Scan the directory */ + D = opendir (source); + if (D == 0) + { + pam_syslog(pamh, LOG_DEBUG, "unable to read directory %s: %m", source); + retval = PAM_PERM_DENIED; + goto go_out; + } + + for (Dir = readdir(D); Dir != 0; Dir = readdir(D)) + { + int SrcFd; + int DestFd; + int Res; + struct stat St; +#ifndef PATH_MAX + char *newsource = NULL, *newdest = NULL; + /* track length of buffers */ + int nslen = 0, ndlen = 0; + int slen = strlen(source), dlen = strlen(dest); +#else + char newsource[PATH_MAX], newdest[PATH_MAX]; +#endif + + /* Skip some files.. */ + if (strcmp(Dir->d_name,".") == 0 || + strcmp(Dir->d_name,"..") == 0) + continue; + + /* Determine what kind of file it is. */ +#ifndef PATH_MAX + nslen = slen + strlen(Dir->d_name) + 2; + + if (nslen <= 0) + { + retval = PAM_BUF_ERR; + goto go_out; + } + + if ((newsource = malloc (nslen)) == NULL) + { + retval = PAM_BUF_ERR; + goto go_out; + } + + sprintf(newsource, "%s/%s", source, Dir->d_name); +#else + snprintf(newsource,sizeof(newsource),"%s/%s",source,Dir->d_name); +#endif + + if (lstat(newsource,&St) != 0) +#ifndef PATH_MAX + { + free(newsource); + newsource = NULL; + continue; + } +#else + continue; +#endif + + + /* We'll need the new file's name. */ +#ifndef PATH_MAX + ndlen = dlen + strlen(Dir->d_name)+2; + + if (ndlen <= 0) + { + retval = PAM_BUF_ERR; + goto go_out; + } + + if ((newdest = malloc(ndlen)) == NULL) + { + free (newsource); + retval = PAM_BUF_ERR; + goto go_out; + } + + sprintf (newdest, "%s/%s", dest, Dir->d_name); +#else + snprintf (newdest,sizeof (newdest),"%s/%s",dest,Dir->d_name); +#endif + + /* If it's a directory, recurse. */ + if (S_ISDIR(St.st_mode)) + { + retval = create_homedir (pamh, ctrl, pwd, newsource, newdest); + +#ifndef PATH_MAX + free(newsource); newsource = NULL; + free(newdest); newdest = NULL; +#endif + + if (retval != PAM_SUCCESS) + { + closedir(D); + goto go_out; + } + continue; + } + + /* If it's a symlink, create a new link. */ + if (S_ISLNK(St.st_mode)) + { + int pointedlen = 0; +#ifndef PATH_MAX + char *pointed = NULL; + { + int size = 100; + + while (1) { + pointed = (char *) malloc(size); + if ( ! pointed ) { + free(newsource); + free(newdest); + return PAM_BUF_ERR; + } + pointedlen = readlink (newsource, pointed, size); + if ( pointedlen < 0 ) break; + if ( pointedlen < size ) break; + free (pointed); + size *= 2; + } + } + if ( pointedlen < 0 ) + free(pointed); + else + pointed[pointedlen] = 0; +#else + char pointed[PATH_MAX]; + memset(pointed, 0, sizeof(pointed)); + + pointedlen = readlink(newsource, pointed, sizeof(pointed) - 1); +#endif + + if ( pointedlen >= 0 ) { + if(symlink(pointed, newdest) == 0) + { + if (lchown(newdest,pwd->pw_uid,pwd->pw_gid) != 0) + { + pam_syslog(pamh, LOG_DEBUG, + "unable to change perms on link %s: %m", newdest); + closedir(D); +#ifndef PATH_MAX + free(pointed); + free(newsource); + free(newdest); +#endif + return PAM_PERM_DENIED; + } + } +#ifndef PATH_MAX + free(pointed); +#endif + } +#ifndef PATH_MAX + free(newsource); newsource = NULL; + free(newdest); newdest = NULL; +#endif + continue; + } + + /* If it's not a regular file, it's probably not a good idea to create + * the new device node, FIFO, or whatever it is. */ + if (!S_ISREG(St.st_mode)) + { +#ifndef PATH_MAX + free(newsource); newsource = NULL; + free(newdest); newdest = NULL; +#endif + continue; + } + + /* Open the source file */ + if ((SrcFd = open(newsource,O_RDONLY)) < 0 || fstat(SrcFd,&St) != 0) + { + pam_syslog(pamh, LOG_DEBUG, + "unable to open src file %s: %m", newsource); + closedir(D); + +#ifndef PATH_MAX + free(newsource); newsource = NULL; + free(newdest); newdest = NULL; +#endif + + return PAM_PERM_DENIED; + } + if (stat(newsource,&St) != 0) + { + pam_syslog(pamh, LOG_DEBUG, "unable to stat src file %s: %m", + newsource); + close(SrcFd); + closedir(D); + +#ifndef PATH_MAX + free(newsource); newsource = NULL; + free(newdest); newdest = NULL; +#endif + + return PAM_PERM_DENIED; + } + + /* Open the dest file */ + if ((DestFd = open(newdest,O_WRONLY | O_TRUNC | O_CREAT,0600)) < 0) + { + pam_syslog(pamh, LOG_DEBUG, + "unable to open dest file %s: %m", newdest); + close(SrcFd); + closedir(D); + +#ifndef PATH_MAX + free(newsource); newsource = NULL; + free(newdest); newdest = NULL; +#endif + return PAM_PERM_DENIED; + } + + /* Set the proper ownership and permissions for the module. We make + the file a+w and then mask it with the set mask. This preseves + execute bits */ + if (fchmod(DestFd,(St.st_mode | 0222) & (~UMask)) != 0 || + fchown(DestFd,pwd->pw_uid,pwd->pw_gid) != 0) + { + pam_syslog(pamh, LOG_DEBUG, + "unable to change perms on copy %s: %m", newdest); + close(SrcFd); + close(DestFd); + closedir(D); + +#ifndef PATH_MAX + free(newsource); newsource = NULL; + free(newdest); newdest = NULL; +#endif + + return PAM_PERM_DENIED; + } + + /* Copy the file */ + do + { + Res = pam_modutil_read(SrcFd,remark,sizeof(remark)); + + if (Res == 0) + continue; + + if (Res > 0) { + if (pam_modutil_write(DestFd,remark,Res) == Res) + continue; + } + + /* If we get here, pam_modutil_read returned a -1 or + pam_modutil_write returned something unexpected. */ + pam_syslog(pamh, LOG_DEBUG, "unable to perform IO: %m"); + close(SrcFd); + close(DestFd); + closedir(D); + +#ifndef PATH_MAX + free(newsource); newsource = NULL; + free(newdest); newdest = NULL; +#endif + + return PAM_PERM_DENIED; + } + while (Res != 0); + close(SrcFd); + close(DestFd); + +#ifndef PATH_MAX + free(newsource); newsource = NULL; + free(newdest); newdest = NULL; +#endif + + } + closedir(D); + + retval = PAM_SUCCESS; + + go_out: + + if (chmod(dest,0777 & (~UMask)) != 0 || + chown(dest,pwd->pw_uid,pwd->pw_gid) != 0) + { + pam_syslog(pamh, LOG_DEBUG, + "unable to change perms on directory %s: %m", dest); + return PAM_PERM_DENIED; + } + + return retval; +} + +/* --- authentication management functions (only) --- */ + +PAM_EXTERN int +pam_sm_open_session (pam_handle_t *pamh, int flags, int argc, + const char **argv) +{ + int retval, ctrl; + const void *user; + const struct passwd *pwd; + struct stat St; + + /* Parse the flag values */ + ctrl = _pam_parse(pamh, flags, argc, argv); + + /* Determine the user name so we can get the home directory */ + retval = pam_get_item(pamh, PAM_USER, &user); + if (retval != PAM_SUCCESS || user == NULL || *(const char *)user == '\0') + { + pam_syslog(pamh, LOG_NOTICE, "user unknown"); + return PAM_USER_UNKNOWN; + } + + /* Get the password entry */ + pwd = pam_modutil_getpwnam (pamh, user); + if (pwd == NULL) + { + D(("couldn't identify user %s", user)); + return PAM_CRED_INSUFFICIENT; + } + + /* Stat the home directory, if something exists then we assume it is + correct and return a success*/ + if (stat(pwd->pw_dir,&St) == 0) + return PAM_SUCCESS; + + return create_homedir(pamh,ctrl,pwd,SkelDir,pwd->pw_dir); +} + +/* Ignore */ +PAM_EXTERN +int pam_sm_close_session (pam_handle_t * pamh UNUSED, int flags UNUSED, + int argc UNUSED, const char **argv UNUSED) +{ + return PAM_SUCCESS; +} + +#ifdef PAM_STATIC + +/* static module data */ +struct pam_module _pam_mkhomedir_modstruct = +{ + "pam_mkhomedir", + NULL, + NULL, + NULL, + pam_sm_open_session, + pam_sm_close_session, + NULL, +}; + +#endif diff --git a/modules/pam_mkhomedir/tst-pam_mkhomedir b/modules/pam_mkhomedir/tst-pam_mkhomedir new file mode 100755 index 00000000..5447883f --- /dev/null +++ b/modules/pam_mkhomedir/tst-pam_mkhomedir @@ -0,0 +1,2 @@ +#!/bin/sh +../../tests/tst-dlopen .libs/pam_mkhomedir.so |