diff options
Diffstat (limited to 'Linux-PAM/modules/pam_issue')
| -rw-r--r-- | Linux-PAM/modules/pam_issue/Makefile | 15 | ||||
| -rw-r--r-- | Linux-PAM/modules/pam_issue/Makefile.am | 31 | ||||
| -rw-r--r-- | Linux-PAM/modules/pam_issue/Makefile.in | 665 | ||||
| -rw-r--r-- | Linux-PAM/modules/pam_issue/README | 79 | ||||
| -rw-r--r-- | Linux-PAM/modules/pam_issue/README.xml | 41 | ||||
| -rw-r--r-- | Linux-PAM/modules/pam_issue/pam_issue.8 | 104 | ||||
| -rw-r--r-- | Linux-PAM/modules/pam_issue/pam_issue.8.xml | 234 | ||||
| -rw-r--r-- | Linux-PAM/modules/pam_issue/pam_issue.c | 305 | ||||
| -rwxr-xr-x | Linux-PAM/modules/pam_issue/tst-pam_issue | 2 |
9 files changed, 1300 insertions, 176 deletions
diff --git a/Linux-PAM/modules/pam_issue/Makefile b/Linux-PAM/modules/pam_issue/Makefile deleted file mode 100644 index 1bd2be21..00000000 --- a/Linux-PAM/modules/pam_issue/Makefile +++ /dev/null @@ -1,15 +0,0 @@ -# -# $Id: Makefile,v 1.2 2000/11/19 23:54:04 agmorgan Exp $ -# -# 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@linux.kernel.org> 2000/08/27 -# - -include ../../Make.Rules - -TITLE=pam_issue - -include ../Simple.Rules diff --git a/Linux-PAM/modules/pam_issue/Makefile.am b/Linux-PAM/modules/pam_issue/Makefile.am new file mode 100644 index 00000000..4e43bd05 --- /dev/null +++ b/Linux-PAM/modules/pam_issue/Makefile.am @@ -0,0 +1,31 @@ +# +# Copyright (c) 2005, 2006 Thorsten Kukuk <kukuk@suse.de> +# + +CLEANFILES = *~ + +EXTRA_DIST = README $(MANS) $(XMLS) tst-pam_issue + +man_MANS = pam_issue.8 +XMLS = README.xml pam_issue.8.xml + +TESTS = tst-pam_issue + +securelibdir = $(SECUREDIR) +secureconfdir = $(SCONFIGDIR) + +AM_CFLAGS = -I$(top_srcdir)/libpam/include -I$(top_srcdir)/libpamc/include +AM_LDFLAGS = -no-undefined -avoid-version -module \ + -L$(top_builddir)/libpam -lpam +if HAVE_VERSIONING + AM_LDFLAGS += -Wl,--version-script=$(srcdir)/../modules.map +endif + +securelib_LTLIBRARIES = pam_issue.la + +if ENABLE_REGENERATE_MAN +noinst_DATA = README +README: pam_issue.8.xml +-include $(top_srcdir)/Make.xml.rules +endif + diff --git a/Linux-PAM/modules/pam_issue/Makefile.in b/Linux-PAM/modules/pam_issue/Makefile.in new file mode 100644 index 00000000..9cec3a85 --- /dev/null +++ b/Linux-PAM/modules/pam_issue/Makefile.in @@ -0,0 +1,665 @@ +# Makefile.in generated by automake 1.10 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006 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 = $(libdir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +@HAVE_VERSIONING_TRUE@am__append_1 = -Wl,--version-script=$(srcdir)/../modules.map +subdir = modules/pam_issue +DIST_COMMON = README $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/gettext.m4 \ + $(top_srcdir)/m4/iconv.m4 \ + $(top_srcdir)/m4/jh_path_xml_catalog.m4 \ + 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mostlyclean-am + +mostlyclean-am: mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool + +pdf: pdf-am + +pdf-am: + +ps: ps-am + +ps-am: + +uninstall-am: uninstall-man uninstall-securelibLTLIBRARIES + +uninstall-man: uninstall-man8 + +.MAKE: install-am install-strip + +.PHONY: CTAGS GTAGS all all-am check check-TESTS check-am clean \ + clean-generic clean-libtool clean-securelibLTLIBRARIES ctags \ + distclean distclean-compile distclean-generic \ + distclean-libtool distclean-tags distdir dvi dvi-am html \ + html-am info info-am install install-am install-data \ + install-data-am install-dvi install-dvi-am install-exec \ + install-exec-am install-html 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_issue.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/Linux-PAM/modules/pam_issue/README b/Linux-PAM/modules/pam_issue/README new file mode 100644 index 00000000..e3192beb --- /dev/null +++ b/Linux-PAM/modules/pam_issue/README @@ -0,0 +1,79 @@ +pam_issue — PAM module to add issue file to user prompt + +━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ + +DESCRIPTION + +pam_issue is a PAM module to prepend an issue file to the username prompt. It +also by default parses escape codes in the issue file similar to some common +getty's (using \x format). + +Recognized escapes: + +\d + + current day + +\l + + name of this tty + +\m + + machine architecture (uname -m) + +\n + + machine's network node hostname (uname -n) + +\o + + domain name of this system + +\r + + release number of operating system (uname -r) + +\t + + current time + +\s + + operating system name (uname -s) + +\u + + number of users currently logged in + +\U + + same as \u except it is suffixed with "user" or "users" (eg. "1 user" or + "10 users") + +\v + + operating system version and build date (uname -v) + +OPTIONS + +noesc + + Turns off escape code parsing. + +issue=issue-file-name + + The file to output if not using the default. + +EXAMPLES + +Add the following line to /etc/pam.d/login to set the user specific issue at +login: + + auth optional pam_issue.so issue=/etc/issue + + +AUTHOR + +pam_issue was written by Ben Collins <bcollins@debian.org>. + diff --git a/Linux-PAM/modules/pam_issue/README.xml b/Linux-PAM/modules/pam_issue/README.xml new file mode 100644 index 00000000..b5b61c3a --- /dev/null +++ b/Linux-PAM/modules/pam_issue/README.xml @@ -0,0 +1,41 @@ +<?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_issue.8.xml"> +--> +]> + +<article> + + <articleinfo> + + <title> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_issue.8.xml" xpointer='xpointer(//refnamediv[@id = "pam_issue-name"]/*)'/> + </title> + + </articleinfo> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_issue.8.xml" xpointer='xpointer(//refsect1[@id = "pam_issue-description"]/*)'/> + </section> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_issue.8.xml" xpointer='xpointer(//refsect1[@id = "pam_issue-options"]/*)'/> + </section> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_issue.8.xml" xpointer='xpointer(//refsect1[@id = "pam_issue-examples"]/*)'/> + </section> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_issue.8.xml" xpointer='xpointer(//refsect1[@id = "pam_issue-author"]/*)'/> + </section> + +</article> diff --git a/Linux-PAM/modules/pam_issue/pam_issue.8 b/Linux-PAM/modules/pam_issue/pam_issue.8 new file mode 100644 index 00000000..011a5e91 --- /dev/null +++ b/Linux-PAM/modules/pam_issue/pam_issue.8 @@ -0,0 +1,104 @@ +.\" Title: pam_issue +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.70.1 <http://docbook.sf.net/> +.\" Date: 06/17/2006 +.\" Manual: Linux\-PAM Manual +.\" Source: Linux\-PAM Manual +.\" +.TH "PAM_ISSUE" "8" "06/17/2006" "Linux\-PAM Manual" "Linux\-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_issue \- PAM module to add issue file to user prompt +.SH "SYNOPSIS" +.HP 13 +\fBpam_issue.so\fR [noesc] [issue=\fIissue\-file\-name\fR] +.SH "DESCRIPTION" +.PP +pam_issue is a PAM module to prepend an issue file to the username prompt. It also by default parses escape codes in the issue file similar to some common getty's (using \\x format). +.PP +Recognized escapes: +.TP 3n +\fB\\d\fR +current day +.TP 3n +\fB\\l\fR +name of this tty +.TP 3n +\fB\\m\fR +machine architecture (uname \-m) +.TP 3n +\fB\\n\fR +machine's network node hostname (uname \-n) +.TP 3n +\fB\\o\fR +domain name of this system +.TP 3n +\fB\\r\fR +release number of operating system (uname \-r) +.TP 3n +\fB\\t\fR +current time +.TP 3n +\fB\\s\fR +operating system name (uname \-s) +.TP 3n +\fB\\u\fR +number of users currently logged in +.TP 3n +\fB\\U\fR +same as \\u except it is suffixed with "user" or "users" (eg. "1 user" or "10 users") +.TP 3n +\fB\\v\fR +operating system version and build date (uname \-v) +.SH "OPTIONS" +.PP +.TP 3n +\fBnoesc\fR +Turns off escape code parsing. +.TP 3n +\fBissue=\fR\fB\fIissue\-file\-name\fR\fR +The file to output if not using the default. +.SH "MODULE SERVICES PROVIDED" +.PP +Only the +\fBauth\fR +service is supported. +.SH "RETURN VALUES" +.PP +.TP 3n +PAM_BUF_ERR +Memory buffer error. +.TP 3n +PAM_IGNORE +The prompt was already changed. +.TP 3n +PAM_SERVICE_ERR +A service module error occured. +.TP 3n +PAM_SUCCESS +The new prompt was set successfull. +.SH "EXAMPLES" +.PP +Add the following line to +\fI/etc/pam.d/login\fR +to set the user specific issue at login: +.sp +.RS 3n +.nf + auth optional pam_issue.so issue=/etc/issue + +.fi +.RE +.sp +.SH "SEE ALSO" +.PP + +\fBpam.conf\fR(5), +\fBpam.d\fR(8), +\fBpam\fR(8) +.SH "AUTHOR" +.PP +pam_issue was written by Ben Collins <bcollins@debian.org>. diff --git a/Linux-PAM/modules/pam_issue/pam_issue.8.xml b/Linux-PAM/modules/pam_issue/pam_issue.8.xml new file mode 100644 index 00000000..fd0d06ae --- /dev/null +++ b/Linux-PAM/modules/pam_issue/pam_issue.8.xml @@ -0,0 +1,234 @@ +<?xml version="1.0" encoding='UTF-8'?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN" + "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd"> + +<refentry id="pam_issue"> + + <refmeta> + <refentrytitle>pam_issue</refentrytitle> + <manvolnum>8</manvolnum> + <refmiscinfo class="sectdesc">Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_issue-name"> + <refname>pam_issue</refname> + <refpurpose>PAM module to add issue file to user prompt</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <cmdsynopsis id="pam_issue-cmdsynopsis"> + <command>pam_issue.so</command> + <arg choice="opt"> + noesc + </arg> + <arg choice="opt"> + issue=<replaceable>issue-file-name</replaceable> + </arg> + </cmdsynopsis> + </refsynopsisdiv> + + <refsect1 id="pam_issue-description"> + + <title>DESCRIPTION</title> + + <para> + pam_issue is a PAM module to prepend an issue file to the username + prompt. It also by default parses escape codes in the issue file + similar to some common getty's (using \x format). + </para> + <para> + Recognized escapes: + </para> + <variablelist> + <varlistentry> + <term><emphasis remap='B'>\d</emphasis></term> + <listitem> + <para>current day</para> + </listitem> + </varlistentry> + <varlistentry> + <term><emphasis remap='B'>\l</emphasis></term> + <listitem> + <para>name of this tty</para> + </listitem> + </varlistentry> + <varlistentry> + <term><emphasis remap='B'>\m</emphasis></term> + <listitem> + <para>machine architecture (uname -m)</para> + </listitem> + </varlistentry> + <varlistentry> + <term><emphasis remap='B'>\n</emphasis></term> + <listitem> + <para>machine's network node hostname (uname -n)</para> + </listitem> + </varlistentry> + <varlistentry> + <term><emphasis remap='B'>\o</emphasis></term> + <listitem> + <para>domain name of this system</para> + </listitem> + </varlistentry> + <varlistentry> + <term><emphasis remap='B'>\r</emphasis></term> + <listitem> + <para>release number of operating system (uname -r)</para> + </listitem> + </varlistentry> + <varlistentry> + <term><emphasis remap='B'>\t</emphasis></term> + <listitem> + <para>current time</para> + </listitem> + </varlistentry> + <varlistentry> + <term><emphasis remap='B'>\s</emphasis></term> + <listitem> + <para>operating system name (uname -s)</para> + </listitem> + </varlistentry> + <varlistentry> + <term><emphasis remap='B'>\u</emphasis></term> + <listitem> + <para>number of users currently logged in</para> + </listitem> + </varlistentry> + <varlistentry> + <term><emphasis remap='B'>\U</emphasis></term> + <listitem> + <para> + same as \u except it is suffixed with "user" or + "users" (eg. "1 user" or "10 users") + </para> + </listitem> + </varlistentry> + <varlistentry> + <term><emphasis remap='B'>\v</emphasis></term> + <listitem> + <para>operating system version and build date (uname -v)</para> + </listitem> + </varlistentry> + </variablelist> + + </refsect1> + + <refsect1 id="pam_issue-options"> + + <title>OPTIONS</title> + <para> + <variablelist> + + <varlistentry> + <term> + <option>noesc</option> + </term> + <listitem> + <para> + Turns off escape code parsing. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term> + <option>issue=<replaceable>issue-file-name</replaceable></option> + </term> + <listitem> + <para> + The file to output if not using the default. + </para> + </listitem> + </varlistentry> + + </variablelist> + + </para> + </refsect1> + + <refsect1 id="pam_issue-services"> + <title>MODULE SERVICES PROVIDED</title> + <para> + Only the <option>auth</option> service is supported. + </para> + </refsect1> + + <refsect1 id='pam_issue-return_values'> + <title>RETURN VALUES</title> + <para> + <variablelist> + + <varlistentry> + <term>PAM_BUF_ERR</term> + <listitem> + <para> + Memory buffer error. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_IGNORE</term> + <listitem> + <para> + The prompt was already changed. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_SERVICE_ERR</term> + <listitem> + <para> + A service module error occured. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + The new prompt was set successfull. + </para> + </listitem> + </varlistentry> + + </variablelist> + </para> + </refsect1> + + <refsect1 id='pam_issue-examples'> + <title>EXAMPLES</title> + <para> + Add the following line to <filename>/etc/pam.d/login</filename> to + set the user specific issue at login: + <programlisting> + auth optional pam_issue.so issue=/etc/issue + </programlisting> + </para> + </refsect1> + + <refsect1 id='pam_issue-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam.conf</refentrytitle><manvolnum>5</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam.d</refentrytitle><manvolnum>8</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> + + <refsect1 id='pam_issue-author'> + <title>AUTHOR</title> + <para> + pam_issue was written by Ben Collins <bcollins@debian.org>. + </para> + </refsect1> + +</refentry> diff --git a/Linux-PAM/modules/pam_issue/pam_issue.c b/Linux-PAM/modules/pam_issue/pam_issue.c index 5665966e..7a8a24d5 100644 --- a/Linux-PAM/modules/pam_issue/pam_issue.c +++ b/Linux-PAM/modules/pam_issue/pam_issue.c @@ -14,8 +14,7 @@ * Released under the GNU LGPL version 2 or later */ -#define _GNU_SOURCE -#define _BSD_SOURCE +#include "config.h" #include <string.h> #include <stdio.h> @@ -27,50 +26,46 @@ #include <unistd.h> #include <sys/utsname.h> #include <utmp.h> -#include <malloc.h> #include <time.h> - -#include <security/_pam_macros.h> +#include <syslog.h> #define PAM_SM_AUTH +#include <security/_pam_macros.h> #include <security/pam_modules.h> +#include <security/pam_ext.h> static int _user_prompt_set = 0; -static char *do_prompt (FILE *); +static int read_issue_raw(pam_handle_t *pamh, FILE *fp, char **prompt); +static int read_issue_quoted(pam_handle_t *pamh, FILE *fp, char **prompt); /* --- authentication management functions (only) --- */ -PAM_EXTERN -int pam_sm_authenticate(pam_handle_t *pamh, int flags, int argc, - const char **argv) +PAM_EXTERN int +pam_sm_authenticate (pam_handle_t *pamh, int flags UNUSED, + int argc, const char **argv) { - int retval = PAM_SUCCESS; - FILE *fd; + int retval = PAM_SERVICE_ERR; + FILE *fp; + const char *issue_file = NULL; int parse_esc = 1; - char *prompt_tmp = NULL; - const char *cur_prompt = NULL; - struct stat st; - char *issue_file = NULL; + const void *item = NULL; + const char *cur_prompt; + char *issue_prompt = NULL; /* If we've already set the prompt, don't set it again */ if(_user_prompt_set) return PAM_IGNORE; - else - /* we set this here so if we fail below, we wont get further - than this next time around (only one real failure) */ - _user_prompt_set = 1; + + /* We set this here so if we fail below, we wont get further + than this next time around (only one real failure) */ + _user_prompt_set = 1; for ( ; argc-- > 0 ; ++argv ) { if (!strncmp(*argv,"issue=",6)) { - issue_file = (char *) strdup(6+*argv); - if (issue_file != NULL) { - D(("set issue_file to: %s", issue_file)); - } else { - D(("failed to strdup issue_file - ignored")); - return PAM_IGNORE; - } + issue_file = 6 + *argv; + D(("set issue_file to: %s", issue_file)); } else if (!strcmp(*argv,"noesc")) { parse_esc = 0; D(("turning off escape parsing by request")); @@ -79,152 +74,139 @@ int pam_sm_authenticate(pam_handle_t *pamh, int flags, int argc, } if (issue_file == NULL) - issue_file = strdup("/etc/issue"); + issue_file = "/etc/issue"; - if ((fd = fopen(issue_file, "r")) != NULL) { - int tot_size = 0; - - if (fstat(fileno(fd), &st) < 0) { - fclose(fd); - if (issue_file) - free(issue_file); - return PAM_IGNORE; - } + if ((fp = fopen(issue_file, "r")) == NULL) { + pam_syslog(pamh, LOG_ERR, "error opening %s: %m", issue_file); + return PAM_SERVICE_ERR; + } - retval = pam_get_item(pamh, PAM_USER_PROMPT, - (const void **) &cur_prompt); - if (retval != PAM_SUCCESS) { - fclose(fd); - if (issue_file) - free(issue_file); - return PAM_IGNORE; - } - if (cur_prompt == NULL) { - cur_prompt = ""; - } + if ((retval = pam_get_item(pamh, PAM_USER_PROMPT, &item)) != PAM_SUCCESS) { + fclose(fp); + return retval; + } - /* first read in the issue file */ + cur_prompt = item; + if (cur_prompt == NULL) + cur_prompt = ""; - if (parse_esc) { - prompt_tmp = do_prompt(fd); - if (prompt_tmp == NULL) { - fclose(fd); - if (issue_file) - free(issue_file); - return PAM_IGNORE; - } - } else { - int count = 0; - - prompt_tmp = malloc(st.st_size + 1); - if (prompt_tmp == NULL) { - fclose(fd); - if (issue_file) - free(issue_file); - return PAM_IGNORE; - } - memset (prompt_tmp, '\0', st.st_size + 1); - count = fread(prompt_tmp, 1, st.st_size, fd); - if (count != st.st_size) { - fclose(fd); - retval = PAM_IGNORE; - goto cleanup; - } - prompt_tmp[st.st_size] = '\0'; - } + if (parse_esc) + retval = read_issue_quoted(pamh, fp, &issue_prompt); + else + retval = read_issue_raw(pamh, fp, &issue_prompt); - fclose(fd); + fclose(fp); - tot_size = strlen(prompt_tmp) + strlen(cur_prompt) + 1; + if (retval != PAM_SUCCESS) + goto out; - /* - * alloc some extra space for the original prompt - * and postpend it to the buffer - */ - { - char *prompt_tmp_tmp = prompt_tmp; + { + size_t size = strlen(issue_prompt) + strlen(cur_prompt) + 1; + char *new_prompt = realloc(issue_prompt, size); - prompt_tmp = realloc(prompt_tmp, tot_size + 1); - if (prompt_tmp == NULL) { - prompt_tmp = prompt_tmp_tmp; - retval = PAM_IGNORE; - goto cleanup; - } + if (new_prompt == NULL) { + pam_syslog(pamh, LOG_ERR, "out of memory"); + retval = PAM_BUF_ERR; + goto out; } + issue_prompt = new_prompt; + } - strcpy(prompt_tmp+strlen(prompt_tmp), cur_prompt); + strcat(issue_prompt, cur_prompt); + retval = pam_set_item(pamh, PAM_USER_PROMPT, + (const void *) issue_prompt); + out: + _pam_drop(issue_prompt); + return (retval == PAM_SUCCESS) ? PAM_IGNORE : retval; +} - prompt_tmp[tot_size] = '\0'; +PAM_EXTERN int +pam_sm_setcred (pam_handle_t *pamh UNUSED, int flags UNUSED, + int argc UNUSED, const char **argv UNUSED) +{ + return PAM_IGNORE; +} - retval = pam_set_item(pamh, PAM_USER_PROMPT, - (const char *) prompt_tmp); +static int +read_issue_raw(pam_handle_t *pamh, FILE *fp, char **prompt) +{ + char *issue; + struct stat st; - cleanup: - free(issue_file); - free(prompt_tmp); + *prompt = NULL; - } else { - D(("could not open issue_file: %s", issue_file)); - free(issue_file); - return PAM_IGNORE; + if (fstat(fileno(fp), &st) < 0) { + pam_syslog(pamh, LOG_ERR, "stat error: %m"); + return PAM_SERVICE_ERR; } - return retval; -} + if ((issue = malloc(st.st_size + 1)) == NULL) { + pam_syslog(pamh, LOG_ERR, "out of memory"); + return PAM_BUF_ERR; + } -PAM_EXTERN -int pam_sm_setcred(pam_handle_t *pamh, int flags, int argc, - const char **argv) -{ - return PAM_IGNORE; + if (fread(issue, 1, st.st_size, fp) != st.st_size) { + pam_syslog(pamh, LOG_ERR, "read error: %m"); + _pam_drop(issue); + return PAM_SERVICE_ERR; + } + + issue[st.st_size] = '\0'; + *prompt = issue; + return PAM_SUCCESS; } -static char *do_prompt(FILE *fd) +static int +read_issue_quoted(pam_handle_t *pamh, FILE *fp, char **prompt) { - int c, size = 1024; + int c; + size_t size = 1024; char *issue; - char buf[1024]; struct utsname uts; - if (fd == NULL) - return NULL; + *prompt = NULL; - issue = (char *)malloc(size); - if (issue == NULL) - return NULL; + if ((issue = malloc(size)) == NULL) { + pam_syslog(pamh, LOG_ERR, "out of memory"); + return PAM_BUF_ERR; + } - issue[0] = '\0'; /* zero this, for strcat to work on first buf */ + issue[0] = '\0'; (void) uname(&uts); - while ((c = getc(fd)) != EOF) { + while ((c = getc(fp)) != EOF) { + char buf[1024]; + + buf[0] = '\0'; if (c == '\\') { - c = getc(fd); + if ((c = getc(fp)) == EOF) + break; switch (c) { case 's': - snprintf (buf, 1024, "%s", uts.sysname); + strncat(buf, uts.sysname, sizeof(buf) - 1); break; case 'n': - snprintf (buf, 1024, "%s", uts.nodename); + strncat(buf, uts.nodename, sizeof(buf) - 1); break; case 'r': - snprintf (buf, 1024, "%s", uts.release); + strncat(buf, uts.release, sizeof(buf) - 1); break; case 'v': - snprintf (buf, 1024, "%s", uts.version); + strncat(buf, uts.version, sizeof(buf) - 1); break; case 'm': - snprintf (buf, 1024, "%s", uts.machine); + strncat(buf, uts.machine, sizeof(buf) - 1); break; case 'o': { char domainname[256]; - getdomainname(domainname, sizeof(domainname)); - domainname[sizeof(domainname)-1] = '\0'; - snprintf (buf, 1024, "%s", domainname); + if (getdomainname(domainname, sizeof(domainname)) >= 0) { + domainname[sizeof(domainname)-1] = '\0'; + strncat(buf, domainname, sizeof(buf) - 1); + } } break; - case 'd': case 't': { @@ -242,70 +224,71 @@ static char *do_prompt(FILE *fd) tm = localtime(&now); if (c == 'd') - snprintf (buf, 1024, "%s %s %d %d", + snprintf (buf, sizeof buf, "%s %s %d %d", weekday[tm->tm_wday], month[tm->tm_mon], - tm->tm_mday, - tm->tm_year + 1900); + tm->tm_mday, tm->tm_year + 1900); else - snprintf (buf, 1024, "%02d:%02d:%02d", + snprintf (buf, sizeof buf, "%02d:%02d:%02d", tm->tm_hour, tm->tm_min, tm->tm_sec); } break; case 'l': { char *ttyn = ttyname(1); - if (!strncmp(ttyn, "/dev/", 5)) - ttyn += 5; - snprintf (buf, 1024, "%s", ttyn); + if (ttyn) { + if (!strncmp(ttyn, "/dev/", 5)) + ttyn += 5; + strncat(buf, ttyn, sizeof(buf) - 1); + } } break; case 'u': case 'U': { - int users = 0; + unsigned int users = 0; struct utmp *ut; setutent(); - while ((ut = getutent())) + while ((ut = getutent())) { if (ut->ut_type == USER_PROCESS) - users++; + ++users; + } endutent(); - printf ("%d ", users); if (c == 'U') - snprintf (buf, 1024, "%s", (users == 1) ? - " user" : " users"); + snprintf (buf, sizeof buf, "%u %s", users, + (users == 1) ? "user" : "users"); + else + snprintf (buf, sizeof buf, "%u", users); break; } default: buf[0] = c; buf[1] = '\0'; } - if ((strlen(issue) + strlen(buf)) < size + 1) { - char *old_issue = issue; - - size += strlen(buf) + 1; - issue = (char *) realloc (issue, size); - if (issue == NULL) { - free(old_issue); - return NULL; - } - } - strcat(issue, buf); } else { buf[0] = c; buf[1] = '\0'; - if ((strlen(issue) + strlen(buf)) < size + 1) { - char *old_issue = issue; - - size += strlen(buf) + 1; - issue = (char *) realloc (issue, size); - if (issue == NULL) { - free(old_issue); - return NULL; - } + } + + if ((strlen(issue) + strlen(buf)) + 1 > size) { + char *new_issue; + + size += strlen(buf) + 1; + new_issue = (char *) realloc (issue, size); + if (new_issue == NULL) { + _pam_drop(issue); + return PAM_BUF_ERR; } + issue = new_issue; strcat(issue, buf); } } - return issue; + if (ferror(fp)) { + pam_syslog(pamh, LOG_ERR, "read error: %m"); + _pam_drop(issue); + return PAM_SERVICE_ERR; + } + + *prompt = issue; + return PAM_SUCCESS; } #ifdef PAM_STATIC diff --git a/Linux-PAM/modules/pam_issue/tst-pam_issue b/Linux-PAM/modules/pam_issue/tst-pam_issue new file mode 100755 index 00000000..0fe4f763 --- /dev/null +++ b/Linux-PAM/modules/pam_issue/tst-pam_issue @@ -0,0 +1,2 @@ +#!/bin/sh +../../tests/tst-dlopen .libs/pam_issue.so |