From de848d9e9146434817c65d74d1d0313e9d729462 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 14:01:37 +0200 Subject: Adding upstream version 1.4.0. Signed-off-by: Daniel Baumann --- modules/pam_motd/Makefile.am | 33 ++ modules/pam_motd/Makefile.in | 1146 +++++++++++++++++++++++++++++++++++++++ modules/pam_motd/README | 81 +++ modules/pam_motd/README.xml | 41 ++ modules/pam_motd/pam_motd.8 | 195 +++++++ modules/pam_motd/pam_motd.8.xml | 214 ++++++++ modules/pam_motd/pam_motd.c | 392 +++++++++++++ modules/pam_motd/tst-pam_motd | 2 + 8 files changed, 2104 insertions(+) create mode 100644 modules/pam_motd/Makefile.am create mode 100644 modules/pam_motd/Makefile.in create mode 100644 modules/pam_motd/README create mode 100644 modules/pam_motd/README.xml create mode 100644 modules/pam_motd/pam_motd.8 create mode 100644 modules/pam_motd/pam_motd.8.xml create mode 100644 modules/pam_motd/pam_motd.c create mode 100755 modules/pam_motd/tst-pam_motd (limited to 'modules/pam_motd') diff --git a/modules/pam_motd/Makefile.am b/modules/pam_motd/Makefile.am new file mode 100644 index 0000000..956dad2 --- /dev/null +++ b/modules/pam_motd/Makefile.am @@ -0,0 +1,33 @@ +# +# Copyright (c) 2005, 2006, 2009 Thorsten Kukuk +# + +CLEANFILES = *~ +MAINTAINERCLEANFILES = $(MANS) README + +EXTRA_DIST = $(XMLS) + +if HAVE_DOC +dist_man_MANS = pam_motd.8 +endif +XMLS = README.xml pam_motd.8.xml +dist_check_SCRIPTS = tst-pam_motd +TESTS = $(dist_check_SCRIPTS) + +securelibdir = $(SECUREDIR) +secureconfdir = $(SCONFIGDIR) + +AM_CFLAGS = -I$(top_srcdir)/libpam/include -I$(top_srcdir)/libpamc/include \ + $(WARN_CFLAGS) +AM_LDFLAGS = -no-undefined -avoid-version -module +if HAVE_VERSIONING + AM_LDFLAGS += -Wl,--version-script=$(srcdir)/../modules.map +endif + +securelib_LTLIBRARIES = pam_motd.la +pam_motd_la_LIBADD = $(top_builddir)/libpam/libpam.la + +if ENABLE_REGENERATE_MAN +dist_noinst_DATA = README +-include $(top_srcdir)/Make.xml.rules +endif diff --git a/modules/pam_motd/Makefile.in b/modules/pam_motd/Makefile.in new file mode 100644 index 0000000..9ed9e2e --- /dev/null +++ b/modules/pam_motd/Makefile.in @@ -0,0 +1,1146 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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By default, pam_motd shows files in +the following locations: + +/etc/motd +/run/motd +/usr/lib/motd +/etc/motd.d/ +/run/motd.d/ +/usr/lib/motd.d/ + +Each message size is limited to 64KB. + +If /etc/motd does not exist, then /run/motd is shown. If /run/motd does not +exist, then /usr/lib/motd is shown. + +Similar overriding behavior applies to the directories. Files in /etc/motd.d/ +override files with the same name in /run/motd.d/ and /usr/lib/motd.d/. Files +in /run/motd.d/ override files with the same name in /usr/lib/motd.d/. + +Files the in the directories listed above are displayed in lexicographic order +by name. + +To silence a message, a symbolic link with target /dev/null may be placed in / +etc/motd.d with the same filename as the message to be silenced. Example: +Creating a symbolic link as follows silences /usr/lib/motd.d/my_motd. + +ln -s /dev/null /etc/motd.d/my_motd + +The MOTD_SHOWN=pam environment variable is set after showing the motd files, +even when all of them were silenced using symbolic links. + +OPTIONS + +motd=/path/filename + + The /path/filename file is displayed as message of the day. Multiple paths + to try can be specified as a colon-separated list. By default this option + is set to /etc/motd:/run/motd:/usr/lib/motd. + +motd_dir=/path/dirname.d + + The /path/dirname.d directory is scanned and each file contained inside of + it is displayed. Multiple directories to scan can be specified as a + colon-separated list. By default this option is set to /etc/motd.d:/run/ + motd.d:/usr/lib/motd.d. + +When no options are given, the default behavior applies for both options. +Specifying either option (or both) will disable the default behavior for both +options. + +EXAMPLES + +The suggested usage for /etc/pam.d/login is: + +session optional pam_motd.so + + +To use a motd file from a different location: + +session optional pam_motd.so motd=/elsewhere/motd + + +To use a motd file from elsewhere, along with a corresponding .d directory: + +session optional pam_motd.so motd=/elsewhere/motd motd_dir=/elsewhere/motd.d + + +AUTHOR + +pam_motd was written by Ben Collins . + +The motd_dir= option was added by Allison Karlitskaya +. + diff --git a/modules/pam_motd/README.xml b/modules/pam_motd/README.xml new file mode 100644 index 0000000..779e4d1 --- /dev/null +++ b/modules/pam_motd/README.xml @@ -0,0 +1,41 @@ + + +--> +]> + +
+ + + + + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_motd.8.xml" xpointer='xpointer(//refnamediv[@id = "pam_motd-name"]/*)'/> + + + + +
+ +
+ +
+ +
+ +
+ +
+ +
+ +
+ +
diff --git a/modules/pam_motd/pam_motd.8 b/modules/pam_motd/pam_motd.8 new file mode 100644 index 0000000..63da02f --- /dev/null +++ b/modules/pam_motd/pam_motd.8 @@ -0,0 +1,195 @@ +'\" t +.\" Title: pam_motd +.\" Author: [see the "AUTHOR" section] +.\" Generator: DocBook XSL Stylesheets v1.79.1 +.\" Date: 06/08/2020 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" Language: English +.\" +.TH "PAM_MOTD" "8" "06/08/2020" "Linux-PAM Manual" "Linux\-PAM Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +pam_motd \- Display the motd file +.SH "SYNOPSIS" +.HP \w'\fBpam_motd\&.so\fR\ 'u +\fBpam_motd\&.so\fR [motd=\fI/path/filename\fR] [motd_dir=\fI/path/dirname\&.d\fR] +.SH "DESCRIPTION" +.PP +pam_motd is a PAM module that can be used to display arbitrary motd (message of the day) files after a successful login\&. By default, pam_motd shows files in the following locations: +.PP +.RS 4 +/etc/motd +.RE +.RS 4 +/run/motd +.RE +.RS 4 +/usr/lib/motd +.RE +.RS 4 +/etc/motd\&.d/ +.RE +.RS 4 +/run/motd\&.d/ +.RE +.RS 4 +/usr/lib/motd\&.d/ +.RE +.PP +Each message size is limited to 64KB\&. +.PP +If +/etc/motd +does not exist, then +/run/motd +is shown\&. If +/run/motd +does not exist, then +/usr/lib/motd +is shown\&. +.PP +Similar overriding behavior applies to the directories\&. Files in +/etc/motd\&.d/ +override files with the same name in +/run/motd\&.d/ +and +/usr/lib/motd\&.d/\&. Files in +/run/motd\&.d/ +override files with the same name in +/usr/lib/motd\&.d/\&. +.PP +Files the in the directories listed above are displayed in lexicographic order by name\&. +.PP +To silence a message, a symbolic link with target +/dev/null +may be placed in +/etc/motd\&.d +with the same filename as the message to be silenced\&. Example: Creating a symbolic link as follows silences +/usr/lib/motd\&.d/my_motd\&. +.PP +\fBln \-s /dev/null /etc/motd\&.d/my_motd\fR +.PP +The +\fBMOTD_SHOWN=pam\fR +environment variable is set after showing the motd files, even when all of them were silenced using symbolic links\&. +.SH "OPTIONS" +.PP +\fBmotd=\fR\fB\fI/path/filename\fR\fR +.RS 4 +The +/path/filename +file is displayed as message of the day\&. Multiple paths to try can be specified as a colon\-separated list\&. By default this option is set to +/etc/motd:/run/motd:/usr/lib/motd\&. +.RE +.PP +\fBmotd_dir=\fR\fB\fI/path/dirname\&.d\fR\fR +.RS 4 +The +/path/dirname\&.d +directory is scanned and each file contained inside of it is displayed\&. Multiple directories to scan can be specified as a colon\-separated list\&. By default this option is set to +/etc/motd\&.d:/run/motd\&.d:/usr/lib/motd\&.d\&. +.RE +.PP +When no options are given, the default behavior applies for both options\&. Specifying either option (or both) will disable the default behavior for both options\&. +.SH "MODULE TYPES PROVIDED" +.PP +Only the +\fBsession\fR +module type is provided\&. +.SH "RETURN VALUES" +.PP +PAM_ABORT +.RS 4 +Not all relevant data or options could be obtained\&. +.RE +.PP +PAM_BUF_ERR +.RS 4 +Memory buffer error\&. +.RE +.PP +PAM_IGNORE +.RS 4 +This is the default return value of this module\&. +.RE +.SH "EXAMPLES" +.PP +The suggested usage for +/etc/pam\&.d/login +is: +.sp +.if n \{\ +.RS 4 +.\} +.nf +session optional pam_motd\&.so + +.fi +.if n \{\ +.RE +.\} +.PP +To use a +motd +file from a different location: +.sp +.if n \{\ +.RS 4 +.\} +.nf +session optional pam_motd\&.so motd=/elsewhere/motd + +.fi +.if n \{\ +.RE +.\} +.PP +To use a +motd +file from elsewhere, along with a corresponding +\&.d +directory: +.sp +.if n \{\ +.RS 4 +.\} +.nf +session optional pam_motd\&.so motd=/elsewhere/motd motd_dir=/elsewhere/motd\&.d + +.fi +.if n \{\ +.RE +.\} +.sp +.SH "SEE ALSO" +.PP +\fBmotd\fR(5), +\fBpam.conf\fR(5), +\fBpam.d\fR(5), +\fBpam\fR(8) +.SH "AUTHOR" +.PP +pam_motd was written by Ben Collins \&. +.PP +The +\fBmotd_dir=\fR +option was added by Allison Karlitskaya \&. diff --git a/modules/pam_motd/pam_motd.8.xml b/modules/pam_motd/pam_motd.8.xml new file mode 100644 index 0000000..b533530 --- /dev/null +++ b/modules/pam_motd/pam_motd.8.xml @@ -0,0 +1,214 @@ + + + + + + + pam_motd + 8 + Linux-PAM Manual + + + + pam_motd + Display the motd file + + + + + pam_motd.so + + motd=/path/filename + + + motd_dir=/path/dirname.d + + + + + + + DESCRIPTION + + + pam_motd is a PAM module that can be used to display + arbitrary motd (message of the day) files after a successful + login. By default, pam_motd shows files in the + following locations: + + + + /etc/motd + /run/motd + /usr/lib/motd + /etc/motd.d/ + /run/motd.d/ + /usr/lib/motd.d/ + + + + Each message size is limited to 64KB. + + + If /etc/motd does not exist, + then /run/motd is shown. If + /run/motd does not exist, then + /usr/lib/motd is shown. + + + Similar overriding behavior applies to the directories. + Files in /etc/motd.d/ override files + with the same name in /run/motd.d/ and + /usr/lib/motd.d/. Files in /run/motd.d/ + override files with the same name in /usr/lib/motd.d/. + + + Files the in the directories listed above are displayed in + lexicographic order by name. + + + To silence a message, + a symbolic link with target /dev/null + may be placed in /etc/motd.d with + the same filename as the message to be silenced. Example: + Creating a symbolic link as follows silences /usr/lib/motd.d/my_motd. + + + ln -s /dev/null /etc/motd.d/my_motd + + + The MOTD_SHOWN=pam environment variable + is set after showing the motd files, even when all of them were silenced + using symbolic links. + + + + + + OPTIONS + + + + + + + + The /path/filename file is displayed + as message of the day. Multiple paths to try can be + specified as a colon-separated list. By default this option + is set to /etc/motd:/run/motd:/usr/lib/motd. + + + + + + + + + + The /path/dirname.d directory is scanned + and each file contained inside of it is displayed. Multiple + directories to scan can be specified as a colon-separated list. + By default this option is set to /etc/motd.d:/run/motd.d:/usr/lib/motd.d. + + + + + + When no options are given, the default behavior applies for both + options. Specifying either option (or both) will disable the + default behavior for both options. + + + + + MODULE TYPES PROVIDED + + Only the module type is provided. + + + + + RETURN VALUES + + + PAM_ABORT + + + Not all relevant data or options could be obtained. + + + + + PAM_BUF_ERR + + + Memory buffer error. + + + + + PAM_IGNORE + + + This is the default return value of this module. + + + + + + + + EXAMPLES + + The suggested usage for /etc/pam.d/login is: + +session optional pam_motd.so + + + + To use a motd file from a different location: + +session optional pam_motd.so motd=/elsewhere/motd + + + + To use a motd file from elsewhere, along with a + corresponding .d directory: + +session optional pam_motd.so motd=/elsewhere/motd motd_dir=/elsewhere/motd.d + + + + + + SEE ALSO + + + motd5 + , + + pam.conf5 + , + + pam.d5 + , + + pam8 + + + + + + AUTHOR + + pam_motd was written by Ben Collins <bcollins@debian.org>. + + + The option was added by + Allison Karlitskaya <allison.karlitskaya@redhat.com>. + + + + diff --git a/modules/pam_motd/pam_motd.c b/modules/pam_motd/pam_motd.c new file mode 100644 index 0000000..46f4fe6 --- /dev/null +++ b/modules/pam_motd/pam_motd.c @@ -0,0 +1,392 @@ +/* + * pam_motd module + * + * Modified for pam_motd by Ben Collins + * Written by Michael K. Johnson 1996/10/24 + */ + +#include "config.h" + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include "pam_inline.h" + +#define DEFAULT_MOTD "/etc/motd:/run/motd:/usr/lib/motd" +#define DEFAULT_MOTD_D "/etc/motd.d:/run/motd.d:/usr/lib/motd.d" + +/* --- session management functions (only) --- */ + +int +pam_sm_close_session (pam_handle_t *pamh UNUSED, int flags UNUSED, + int argc UNUSED, const char **argv UNUSED) +{ + return PAM_IGNORE; +} + +static const char default_motd[] = DEFAULT_MOTD; +static const char default_motd_dir[] = DEFAULT_MOTD_D; + +static void try_to_display_fd(pam_handle_t *pamh, int fd) +{ + struct stat st; + char *mtmp = NULL; + + /* fill in message buffer with contents of motd */ + if ((fstat(fd, &st) < 0) || !st.st_size || st.st_size > 0x10000) + return; + + if (!(mtmp = malloc(st.st_size+1))) + return; + + if (pam_modutil_read(fd, mtmp, st.st_size) == st.st_size) { + if (mtmp[st.st_size-1] == '\n') + mtmp[st.st_size-1] = '\0'; + else + mtmp[st.st_size] = '\0'; + + pam_info (pamh, "%s", mtmp); + } + + _pam_drop(mtmp); +} + +/* + * Split a DELIM-separated string ARG into an array. + * Outputs a newly allocated array of strings OUT_ARG_SPLIT + * and the number of strings OUT_NUM_STRS. + * Returns 0 in case of error, 1 in case of success. + */ +static int pam_split_string(const pam_handle_t *pamh, char *arg, char delim, + char ***out_arg_split, unsigned int *out_num_strs) +{ + char *arg_extracted = NULL; + const char *arg_ptr = arg; + char **arg_split = NULL; + char delim_str[2]; + unsigned int i = 0; + unsigned int num_strs = 0; + int retval = 0; + + delim_str[0] = delim; + delim_str[1] = '\0'; + + if (arg == NULL) { + goto out; + } + + while (arg_ptr != NULL) { + num_strs++; + arg_ptr = strchr(arg_ptr + sizeof(const char), delim); + } + + arg_split = calloc(num_strs, sizeof(*arg_split)); + if (arg_split == NULL) { + pam_syslog(pamh, LOG_CRIT, "failed to allocate string array"); + goto out; + } + + arg_extracted = strtok_r(arg, delim_str, &arg); + while (arg_extracted != NULL && i < num_strs) { + arg_split[i++] = arg_extracted; + arg_extracted = strtok_r(NULL, delim_str, &arg); + } + + retval = 1; + + out: + *out_num_strs = num_strs; + *out_arg_split = arg_split; + + return retval; +} + +/* Join A_STR and B_STR, inserting a "/" between them if one is not already trailing + * in A_STR or beginning B_STR. A pointer to a newly allocated string holding the + * joined string is returned in STRP_OUT. + * Returns -1 in case of error, or the number of bytes in the joined string in + * case of success. */ +static int join_dir_strings(char **strp_out, const char *a_str, const char *b_str) +{ + int has_sep = 0; + int retval = -1; + char *join_strp = NULL; + + if (strp_out == NULL || a_str == NULL || b_str == NULL) { + goto out; + } + if (strlen(a_str) == 0) { + goto out; + } + + has_sep = (a_str[strlen(a_str) - 1] == '/') || (b_str[0] == '/'); + + retval = asprintf(&join_strp, "%s%s%s", a_str, + (has_sep == 1) ? "" : "/", b_str); + + if (retval < 0) { + goto out; + } + + *strp_out = join_strp; + + out: + return retval; +} + +static int compare_strings(const void *a, const void *b) +{ + const char *a_str = *(const char * const *)a; + const char *b_str = *(const char * const *)b; + + if (a_str == NULL && b_str == NULL) { + return 0; + } + else if (a_str == NULL) { + return -1; + } + else if (b_str == NULL) { + return 1; + } + else { + return strcmp(a_str, b_str); + } +} + +static int filter_dirents(const struct dirent *d) +{ + return (d->d_type == DT_REG || d->d_type == DT_LNK); +} + +static void try_to_display_directories_with_overrides(pam_handle_t *pamh, + char **motd_dir_path_split, unsigned int num_motd_dirs, int report_missing) +{ + struct dirent ***dirscans = NULL; + unsigned int *dirscans_sizes = NULL; + unsigned int dirscans_size_total = 0; + char **dirnames_all = NULL; + unsigned int i; + int i_dirnames = 0; + + if (pamh == NULL || motd_dir_path_split == NULL) { + goto out; + } + if (num_motd_dirs < 1) { + goto out; + } + + if ((dirscans = calloc(num_motd_dirs, sizeof(*dirscans))) == NULL) { + pam_syslog(pamh, LOG_CRIT, "failed to allocate dirent arrays"); + goto out; + } + if ((dirscans_sizes = calloc(num_motd_dirs, sizeof(*dirscans_sizes))) == NULL) { + pam_syslog(pamh, LOG_CRIT, "failed to allocate dirent array sizes"); + goto out; + } + + for (i = 0; i < num_motd_dirs; i++) { + int rv; + rv = scandir(motd_dir_path_split[i], &(dirscans[i]), + filter_dirents, alphasort); + if (rv < 0) { + if (errno != ENOENT || report_missing) { + pam_syslog(pamh, LOG_ERR, "error scanning directory %s: %m", + motd_dir_path_split[i]); + } + } else { + dirscans_sizes[i] = rv; + } + dirscans_size_total += dirscans_sizes[i]; + } + + if (dirscans_size_total == 0) + goto out; + + /* Allocate space for all file names found in the directories, including duplicates. */ + if ((dirnames_all = calloc(dirscans_size_total, sizeof(*dirnames_all))) == NULL) { + pam_syslog(pamh, LOG_CRIT, "failed to allocate dirname array"); + goto out; + } + + for (i = 0; i < num_motd_dirs; i++) { + unsigned int j; + + for (j = 0; j < dirscans_sizes[i]; j++) { + dirnames_all[i_dirnames] = dirscans[i][j]->d_name; + i_dirnames++; + } + } + + qsort(dirnames_all, dirscans_size_total, + sizeof(const char *), compare_strings); + + for (i = 0; i < dirscans_size_total; i++) { + unsigned int j; + + if (dirnames_all[i] == NULL) { + continue; + } + + /* Skip duplicate file names. */ + if (i > 0 && strcmp(dirnames_all[i], dirnames_all[i - 1]) == 0) { + continue; + } + + for (j = 0; j < num_motd_dirs; j++) { + char *abs_path = NULL; + int fd; + + if (join_dir_strings(&abs_path, motd_dir_path_split[j], + dirnames_all[i]) < 0 || abs_path == NULL) { + continue; + } + + fd = open(abs_path, O_RDONLY, 0); + _pam_drop(abs_path); + + if (fd >= 0) { + try_to_display_fd(pamh, fd); + close(fd); + + /* We displayed a file, skip to the next file name. */ + break; + } + } + } + + out: + _pam_drop(dirnames_all); + if (dirscans_sizes != NULL) { + for (i = 0; i < num_motd_dirs; i++) { + unsigned int j; + + for (j = 0; j < dirscans_sizes[i]; j++) + _pam_drop(dirscans[i][j]); + _pam_drop(dirscans[i]); + } + _pam_drop(dirscans_sizes); + } + _pam_drop(dirscans); +} + +int pam_sm_open_session(pam_handle_t *pamh, int flags, + int argc, const char **argv) +{ + int retval = PAM_IGNORE; + const char *motd_path = NULL; + char *motd_path_copy = NULL; + unsigned int num_motd_paths = 0; + char **motd_path_split = NULL; + const char *motd_dir_path = NULL; + char *motd_dir_path_copy = NULL; + unsigned int num_motd_dir_paths = 0; + char **motd_dir_path_split = NULL; + int report_missing; + + if (flags & PAM_SILENT) { + return retval; + } + + for (; argc-- > 0; ++argv) { + const char *str; + if ((str = pam_str_skip_prefix(*argv, "motd=")) != NULL) { + + motd_path = str; + if (*motd_path != '\0') { + D(("set motd path: %s", motd_path)); + } else { + motd_path = NULL; + pam_syslog(pamh, LOG_ERR, + "motd= specification missing argument - ignored"); + } + } + else if ((str = pam_str_skip_prefix(*argv, "motd_dir=")) != NULL) { + + motd_dir_path = str; + if (*motd_dir_path != '\0') { + D(("set motd.d path: %s", motd_dir_path)); + } else { + motd_dir_path = NULL; + pam_syslog(pamh, LOG_ERR, + "motd_dir= specification missing argument - ignored"); + } + } + else + pam_syslog(pamh, LOG_ERR, "unknown option: %s", *argv); + } + + if (motd_path == NULL && motd_dir_path == NULL) { + motd_path = default_motd; + motd_dir_path = default_motd_dir; + report_missing = 0; + } else { + report_missing = 1; + } + + if (motd_path != NULL) { + motd_path_copy = strdup(motd_path); + } + + if (motd_path_copy != NULL) { + if (pam_split_string(pamh, motd_path_copy, ':', + &motd_path_split, &num_motd_paths) == 0) { + goto out; + } + } + + if (motd_dir_path != NULL) { + motd_dir_path_copy = strdup(motd_dir_path); + } + + if (motd_dir_path_copy != NULL) { + if (pam_split_string(pamh, motd_dir_path_copy, ':', + &motd_dir_path_split, &num_motd_dir_paths) == 0) { + goto out; + } + } + + if (motd_path_split != NULL) { + unsigned int i; + + for (i = 0; i < num_motd_paths; i++) { + int fd = open(motd_path_split[i], O_RDONLY, 0); + + if (fd >= 0) { + try_to_display_fd(pamh, fd); + close(fd); + + /* We found and displayed a file, move onto next filename. */ + break; + } + } + } + + if (motd_dir_path_split != NULL) + try_to_display_directories_with_overrides(pamh, motd_dir_path_split, + num_motd_dir_paths, report_missing); + + out: + _pam_drop(motd_path_copy); + _pam_drop(motd_path_split); + _pam_drop(motd_dir_path_copy); + _pam_drop(motd_dir_path_split); + + retval = pam_putenv(pamh, "MOTD_SHOWN=pam"); + + return retval == PAM_SUCCESS ? PAM_IGNORE : retval; +} + +/* end of module definition */ diff --git a/modules/pam_motd/tst-pam_motd b/modules/pam_motd/tst-pam_motd new file mode 100755 index 0000000..155e230 --- /dev/null +++ b/modules/pam_motd/tst-pam_motd @@ -0,0 +1,2 @@ +#!/bin/sh +../../tests/tst-dlopen .libs/pam_motd.so -- cgit v1.2.3