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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 12:01:37 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 12:01:37 +0000 |
commit | de848d9e9146434817c65d74d1d0313e9d729462 (patch) | |
tree | dcbd0efb229b17f696f7195671f05b354b4f70fc /modules/pam_mail | |
parent | Initial commit. (diff) | |
download | pam-de848d9e9146434817c65d74d1d0313e9d729462.tar.xz pam-de848d9e9146434817c65d74d1d0313e9d729462.zip |
Adding upstream version 1.4.0.upstream/1.4.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'modules/pam_mail')
-rw-r--r-- | modules/pam_mail/Makefile.am | 33 | ||||
-rw-r--r-- | modules/pam_mail/Makefile.in | 1146 | ||||
-rw-r--r-- | modules/pam_mail/README | 71 | ||||
-rw-r--r-- | modules/pam_mail/README.xml | 41 | ||||
-rw-r--r-- | modules/pam_mail/pam_mail.8 | 159 | ||||
-rw-r--r-- | modules/pam_mail/pam_mail.8.xml | 280 | ||||
-rw-r--r-- | modules/pam_mail/pam_mail.c | 468 | ||||
-rwxr-xr-x | modules/pam_mail/tst-pam_mail | 2 |
8 files changed, 2200 insertions, 0 deletions
diff --git a/modules/pam_mail/Makefile.am b/modules/pam_mail/Makefile.am new file mode 100644 index 0000000..6756f40 --- /dev/null +++ b/modules/pam_mail/Makefile.am @@ -0,0 +1,33 @@ +# +# Copyright (c) 2005, 2006, 2009 Thorsten Kukuk <kukuk@suse.de> +# + +CLEANFILES = *~ +MAINTAINERCLEANFILES = $(MANS) README + +EXTRA_DIST = $(XMLS) + +if HAVE_DOC +dist_man_MANS = pam_mail.8 +endif +XMLS = README.xml pam_mail.8.xml +dist_check_SCRIPTS = tst-pam_mail +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_mail.la +pam_mail_la_LIBADD = $(top_builddir)/libpam/libpam.la + +if ENABLE_REGENERATE_MAN +dist_noinst_DATA = README +-include $(top_srcdir)/Make.xml.rules +endif diff --git a/modules/pam_mail/Makefile.in b/modules/pam_mail/Makefile.in new file mode 100644 index 0000000..9f7d822 --- /dev/null +++ b/modules/pam_mail/Makefile.in @@ -0,0 +1,1146 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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It +gives a single message indicating the newness of any mail it finds in the +user's mail folder. This module also sets the PAM environment variable, MAIL, +to the user's mail directory. + +If the mail spool file (be it /var/mail/$USER or a pathname given with the dir= +parameter) is a directory then pam_mail assumes it is in the Maildir format. + +OPTIONS + +close + + Indicate if the user has any mail also on logout. + +debug + + Print debug information. + +dir=maildir + + Look for the user's mail in an alternative location defined by maildir/ + <login>. The default location for mail is /var/mail/<login>. Note, if the + supplied maildir is prefixed by a '~', the directory is interpreted as + indicating a file in the user's home directory. + +empty + + Also print message if user has no mail. + +hash=count + + Mail directory hash depth. For example, a hashcount of 2 would make the + mail file be /var/spool/mail/u/s/user. + +noenv + + Do not set the MAIL environment variable. + +nopen + + Don't print any mail information on login. This flag is useful to get the + MAIL environment variable set, but to not display any information about it. + +quiet + + Only report when there is new mail. + +standard + + Old style "You have..." format which doesn't show the mail spool being + used. This also implies "empty". + +EXAMPLES + +Add the following line to /etc/pam.d/login to indicate that the user has new +mail when they login to the system. + +session optional pam_mail.so standard + + +AUTHOR + +pam_mail was written by Andrew G. Morgan <morgan@kernel.org>. + diff --git a/modules/pam_mail/README.xml b/modules/pam_mail/README.xml new file mode 100644 index 0000000..4165d85 --- /dev/null +++ b/modules/pam_mail/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_mail.8.xml"> +--> +]> + +<article> + + <articleinfo> + + <title> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_mail.8.xml" xpointer='xpointer(//refnamediv[@id = "pam_mail-name"]/*)'/> + </title> + + </articleinfo> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_mail.8.xml" xpointer='xpointer(//refsect1[@id = "pam_mail-description"]/*)'/> + </section> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_mail.8.xml" xpointer='xpointer(//refsect1[@id = "pam_mail-options"]/*)'/> + </section> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_mail.8.xml" xpointer='xpointer(//refsect1[@id = "pam_mail-examples"]/*)'/> + </section> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_mail.8.xml" xpointer='xpointer(//refsect1[@id = "pam_mail-author"]/*)'/> + </section> + +</article> diff --git a/modules/pam_mail/pam_mail.8 b/modules/pam_mail/pam_mail.8 new file mode 100644 index 0000000..4761b12 --- /dev/null +++ b/modules/pam_mail/pam_mail.8 @@ -0,0 +1,159 @@ +'\" t +.\" Title: pam_mail +.\" Author: [see the "AUTHOR" section] +.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/> +.\" Date: 06/08/2020 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" Language: English +.\" +.TH "PAM_MAIL" "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_mail \- Inform about available mail +.SH "SYNOPSIS" +.HP \w'\fBpam_mail\&.so\fR\ 'u +\fBpam_mail\&.so\fR [close] [debug] [dir=\fImaildir\fR] [empty] [hash=\fIcount\fR] [noenv] [nopen] [quiet] [standard] +.SH "DESCRIPTION" +.PP +The pam_mail PAM module provides the "you have new mail" service to the user\&. It can be plugged into any application that has credential or session hooks\&. It gives a single message indicating the +\fInewness\fR +of any mail it finds in the user\*(Aqs mail folder\&. This module also sets the PAM environment variable, +\fBMAIL\fR, to the user\*(Aqs mail directory\&. +.PP +If the mail spool file (be it +/var/mail/$USER +or a pathname given with the +\fBdir=\fR +parameter) is a directory then pam_mail assumes it is in the +\fIMaildir\fR +format\&. +.SH "OPTIONS" +.PP +.PP +\fBclose\fR +.RS 4 +Indicate if the user has any mail also on logout\&. +.RE +.PP +\fBdebug\fR +.RS 4 +Print debug information\&. +.RE +.PP +\fBdir=\fR\fB\fImaildir\fR\fR +.RS 4 +Look for the user\*(Aqs mail in an alternative location defined by +maildir/<login>\&. The default location for mail is +/var/mail/<login>\&. Note, if the supplied +maildir +is prefixed by a \*(Aq~\*(Aq, the directory is interpreted as indicating a file in the user\*(Aqs home directory\&. +.RE +.PP +\fBempty\fR +.RS 4 +Also print message if user has no mail\&. +.RE +.PP +\fBhash=\fR\fB\fIcount\fR\fR +.RS 4 +Mail directory hash depth\&. For example, a +\fIhashcount\fR +of 2 would make the mail file be +/var/spool/mail/u/s/user\&. +.RE +.PP +\fBnoenv\fR +.RS 4 +Do not set the +\fBMAIL\fR +environment variable\&. +.RE +.PP +\fBnopen\fR +.RS 4 +Don\*(Aqt print any mail information on login\&. This flag is useful to get the +\fBMAIL\fR +environment variable set, but to not display any information about it\&. +.RE +.PP +\fBquiet\fR +.RS 4 +Only report when there is new mail\&. +.RE +.PP +\fBstandard\fR +.RS 4 +Old style "You have\&.\&.\&." format which doesn\*(Aqt show the mail spool being used\&. This also implies "empty"\&. +.RE +.SH "MODULE TYPES PROVIDED" +.PP +The +\fBsession\fR +and +\fBauth\fR +(on establishment and deletion of credentials) module types are provided\&. +.SH "RETURN VALUES" +.PP +PAM_BUF_ERR +.RS 4 +Memory buffer error\&. +.RE +.PP +PAM_SERVICE_ERR +.RS 4 +Badly formed arguments\&. +.RE +.PP +PAM_SUCCESS +.RS 4 +Success\&. +.RE +.PP +PAM_USER_UNKNOWN +.RS 4 +User not known\&. +.RE +.SH "EXAMPLES" +.PP +Add the following line to +/etc/pam\&.d/login +to indicate that the user has new mail when they login to the system\&. +.sp +.if n \{\ +.RS 4 +.\} +.nf +session optional pam_mail\&.so standard + +.fi +.if n \{\ +.RE +.\} +.sp +.SH "SEE ALSO" +.PP +\fBpam.conf\fR(5), +\fBpam.d\fR(5), +\fBpam\fR(8) +.SH "AUTHOR" +.PP +pam_mail was written by Andrew G\&. Morgan <morgan@kernel\&.org>\&. diff --git a/modules/pam_mail/pam_mail.8.xml b/modules/pam_mail/pam_mail.8.xml new file mode 100644 index 0000000..95216b6 --- /dev/null +++ b/modules/pam_mail/pam_mail.8.xml @@ -0,0 +1,280 @@ +<?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_mail"> + + <refmeta> + <refentrytitle>pam_mail</refentrytitle> + <manvolnum>8</manvolnum> + <refmiscinfo class="sectdesc">Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_mail-name"> + <refname>pam_mail</refname> + <refpurpose>Inform about available mail</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <cmdsynopsis id="pam_mail-cmdsynopsis"> + <command>pam_mail.so</command> + <arg choice="opt"> + close + </arg> + <arg choice="opt"> + debug + </arg> + <arg choice="opt"> + dir=<replaceable>maildir</replaceable> + </arg> + <arg choice="opt"> + empty + </arg> + <arg choice="opt"> + hash=<replaceable>count</replaceable> + </arg> + <arg choice="opt"> + noenv + </arg> + <arg choice="opt"> + nopen + </arg> + <arg choice="opt"> + quiet + </arg> + <arg choice="opt"> + standard + </arg> + </cmdsynopsis> + </refsynopsisdiv> + + <refsect1 id="pam_mail-description"> + + <title>DESCRIPTION</title> + + <para> + The pam_mail PAM module provides the "you have new mail" + service to the user. It can be plugged into any application + that has credential or session hooks. It gives a single message + indicating the <emphasis>newness</emphasis> of any mail it finds + in the user's mail folder. This module also sets the PAM + environment variable, <emphasis remap='B'>MAIL</emphasis>, to the + user's mail directory. + </para> + <para> + If the mail spool file (be it <filename>/var/mail/$USER</filename> + or a pathname given with the <option>dir=</option> parameter) is + a directory then pam_mail assumes it is in the + <emphasis remap='I'>Maildir</emphasis> format. + </para> + </refsect1> + + <refsect1 id="pam_mail-options"> + + <title>OPTIONS</title> + <para> + <variablelist> + + <varlistentry> + <term> + <option>close</option> + </term> + <listitem> + <para> + Indicate if the user has any mail also on logout. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term> + <option>debug</option> + </term> + <listitem> + <para> + Print debug information. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term> + <option>dir=<replaceable>maildir</replaceable></option> + </term> + <listitem> + <para> + Look for the user's mail in an alternative location defined by + <filename>maildir/<login></filename>. The default + location for mail is <filename>/var/mail/<login></filename>. + Note, if the supplied + <filename>maildir</filename> is prefixed by a '~', the + directory is interpreted as indicating a file in the user's + home directory. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term> + <option>empty</option> + </term> + <listitem> + <para> + Also print message if user has no mail. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term> + <option>hash=<replaceable>count</replaceable></option> + </term> + <listitem> + <para> + Mail directory hash depth. For example, a + <emphasis>hashcount</emphasis> of 2 would + make the mail file be + <filename>/var/spool/mail/u/s/user</filename>. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term> + <option>noenv</option> + </term> + <listitem> + <para> + Do not set the <emphasis remap='B'>MAIL</emphasis> + environment variable. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term> + <option>nopen</option> + </term> + <listitem> + <para> + Don't print any mail information on login. This flag is + useful to get the <emphasis remap='B'>MAIL</emphasis> + environment variable set, but to not display any information + about it. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term> + <option>quiet</option> + </term> + <listitem> + <para> + Only report when there is new mail. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term> + <option>standard</option> + </term> + <listitem> + <para> + Old style "You have..." format which doesn't show the + mail spool being used. This also implies "empty". + </para> + </listitem> + </varlistentry> + + </variablelist> + + </para> + </refsect1> + + <refsect1 id="pam_mail-types"> + <title>MODULE TYPES PROVIDED</title> + <para> + The <option>session</option> and + <option>auth</option> (on establishment and + deletion of credentials) module types are provided. + </para> + </refsect1> + + <refsect1 id='pam_mail-return_values'> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_BUF_ERR</term> + <listitem> + <para> + Memory buffer error. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_SERVICE_ERR</term> + <listitem> + <para> + Badly formed arguments. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + Success. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_USER_UNKNOWN</term> + <listitem> + <para> + User not known. + </para> + </listitem> + </varlistentry> + + </variablelist> + </refsect1> + + <refsect1 id='pam_mail-examples'> + <title>EXAMPLES</title> + <para> + Add the following line to <filename>/etc/pam.d/login</filename> to + indicate that the user has new mail when they login to the system. + <programlisting> +session optional pam_mail.so standard + </programlisting> + </para> + </refsect1> + + <refsect1 id='pam_mail-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam.conf</refentrytitle><manvolnum>5</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam.d</refentrytitle><manvolnum>5</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> + + <refsect1 id='pam_mail-author'> + <title>AUTHOR</title> + <para> + pam_mail was written by Andrew G. Morgan <morgan@kernel.org>. + </para> + </refsect1> + +</refentry> diff --git a/modules/pam_mail/pam_mail.c b/modules/pam_mail/pam_mail.c new file mode 100644 index 0000000..17383c7 --- /dev/null +++ b/modules/pam_mail/pam_mail.c @@ -0,0 +1,468 @@ +/* + * pam_mail module + * + * Written by Andrew Morgan <morgan@linux.kernel.org> 1996/3/11 + * $HOME additions by David Kinchlea <kinch@kinch.ark.com> 1997/1/7 + * mailhash additions by Chris Adams <cadams@ro.com> 1998/7/11 + */ + +#include "config.h" + +#include <ctype.h> +#include <pwd.h> +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <syslog.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <unistd.h> +#include <dirent.h> +#include <errno.h> + +#ifdef HAVE_PATHS_H +#include <paths.h> +#endif + +#define DEFAULT_MAIL_DIRECTORY PAM_PATH_MAILDIR +#define MAIL_FILE_FORMAT "%s%s/%s" +#define MAIL_ENV_NAME "MAIL" +#define MAIL_ENV_FORMAT MAIL_ENV_NAME "=%s" + +#include <security/pam_modules.h> +#include <security/_pam_macros.h> +#include <security/pam_modutil.h> +#include <security/pam_ext.h> +#include "pam_inline.h" + +/* argument parsing */ + +#define PAM_DEBUG_ARG 0x0001 +#define PAM_NO_LOGIN 0x0002 +#define PAM_LOGOUT_TOO 0x0004 +#define PAM_NEW_MAIL_DIR 0x0010 +#define PAM_MAIL_SILENT 0x0020 +#define PAM_NO_ENV 0x0040 +#define PAM_HOME_MAIL 0x0100 +#define PAM_EMPTY_TOO 0x0200 +#define PAM_STANDARD_MAIL 0x0400 +#define PAM_QUIET_MAIL 0x1000 + +#define HAVE_NEW_MAIL 0x1 +#define HAVE_OLD_MAIL 0x2 +#define HAVE_NO_MAIL 0x3 +#define HAVE_MAIL 0x4 + +static int +_pam_parse (const pam_handle_t *pamh, int flags, int argc, + const char **argv, const char **maildir, size_t *hashcount) +{ + int ctrl=0; + + if (flags & PAM_SILENT) { + ctrl |= PAM_MAIL_SILENT; + } + + *hashcount = 0; + + /* step through arguments */ + for (; argc-- > 0; ++argv) { + const char *str; + + /* generic options */ + + if (!strcmp(*argv,"debug")) + ctrl |= PAM_DEBUG_ARG; + else if (!strcmp(*argv,"quiet")) + ctrl |= PAM_QUIET_MAIL; + else if (!strcmp(*argv,"standard")) + ctrl |= PAM_STANDARD_MAIL | PAM_EMPTY_TOO; + else if ((str = pam_str_skip_prefix(*argv, "dir=")) != NULL) { + *maildir = str; + if (**maildir != '\0') { + D(("new mail directory: %s", *maildir)); + ctrl |= PAM_NEW_MAIL_DIR; + } else { + pam_syslog(pamh, LOG_ERR, + "dir= specification missing argument - ignored"); + } + } else if ((str = pam_str_skip_prefix(*argv, "hash=")) != NULL) { + char *ep = NULL; + *hashcount = strtoul(str,&ep,10); + if (!ep) { + *hashcount = 0; + } + } else if (!strcmp(*argv,"close")) { + ctrl |= PAM_LOGOUT_TOO; + } else if (!strcmp(*argv,"nopen")) { + ctrl |= PAM_NO_LOGIN; + } else if (!strcmp(*argv,"noenv")) { + ctrl |= PAM_NO_ENV; + } else if (!strcmp(*argv,"empty")) { + ctrl |= PAM_EMPTY_TOO; + } else { + pam_syslog(pamh, LOG_ERR, "unknown option: %s", *argv); + } + } + + if ((*hashcount != 0) && !(ctrl & PAM_NEW_MAIL_DIR)) { + *maildir = DEFAULT_MAIL_DIRECTORY; + ctrl |= PAM_NEW_MAIL_DIR; + } + + return ctrl; +} + +static int +get_folder(pam_handle_t *pamh, int ctrl, + const char *path_mail, char **folder_p, size_t hashcount, + const struct passwd *pwd) +{ + int retval; + const char *path; + char *folder = NULL; + + if (ctrl & PAM_NEW_MAIL_DIR) { + path = path_mail; + if (*path == '~') { /* support for $HOME delivery */ + /* + * "~/xxx" and "~xxx" are treated as same + */ + if (!*++path || (*path == '/' && !*++path)) { + pam_syslog(pamh, LOG_ERR, + "badly formed mail path [%s]", path_mail); + retval = PAM_SERVICE_ERR; + goto get_folder_cleanup; + } + ctrl |= PAM_HOME_MAIL; + if (hashcount != 0) { + pam_syslog(pamh, LOG_ERR, + "cannot do hash= and home directory mail"); + } + } + } else { + path = DEFAULT_MAIL_DIRECTORY; + } + + /* put folder together */ + + hashcount = hashcount < strlen(pwd->pw_name) ? + hashcount : strlen(pwd->pw_name); + + retval = PAM_BUF_ERR; + if (ctrl & PAM_HOME_MAIL) { + if (asprintf(&folder, MAIL_FILE_FORMAT, pwd->pw_dir, "", path) < 0) + goto get_folder_cleanup; + } else { + int rc; + size_t i; + char *hash; + + if ((hash = malloc(2 * hashcount + 1)) == NULL) + goto get_folder_cleanup; + + for (i = 0; i < hashcount; i++) { + hash[2 * i] = '/'; + hash[2 * i + 1] = pwd->pw_name[i]; + } + hash[2 * i] = '\0'; + + rc = asprintf(&folder, MAIL_FILE_FORMAT, path, hash, pwd->pw_name); + _pam_overwrite(hash); + _pam_drop(hash); + if (rc < 0) + goto get_folder_cleanup; + } + D(("folder=[%s]", folder)); + retval = PAM_SUCCESS; + + /* tidy up */ + + get_folder_cleanup: + path = NULL; + + *folder_p = folder; + folder = NULL; + + if (retval == PAM_BUF_ERR) + pam_syslog(pamh, LOG_CRIT, "out of memory for mail folder"); + + return retval; +} + +static int +get_mail_status(pam_handle_t *pamh, int ctrl, const char *folder) +{ + int type = 0; + struct stat mail_st; + + if (stat(folder, &mail_st) < 0) + return 0; + + if (S_ISDIR(mail_st.st_mode)) { /* Assume Maildir format */ + int i, save_errno; + char *dir; + struct dirent **namelist; + + if (asprintf(&dir, "%s/new", folder) < 0) { + pam_syslog(pamh, LOG_CRIT, "out of memory"); + goto get_mail_status_cleanup; + } + i = scandir(dir, &namelist, 0, alphasort); + save_errno = errno; + _pam_overwrite(dir); + _pam_drop(dir); + if (i < 0) { + type = 0; + namelist = NULL; + if (save_errno == ENOMEM) { + pam_syslog(pamh, LOG_CRIT, "out of memory"); + goto get_mail_status_cleanup; + } + } + type = (i > 2) ? HAVE_NEW_MAIL : 0; + while (--i >= 0) + _pam_drop(namelist[i]); + _pam_drop(namelist); + if (type == 0) { + if (asprintf(&dir, "%s/cur", folder) < 0) { + pam_syslog(pamh, LOG_CRIT, "out of memory"); + goto get_mail_status_cleanup; + } + i = scandir(dir, &namelist, 0, alphasort); + save_errno = errno; + _pam_overwrite(dir); + _pam_drop(dir); + if (i < 0) { + type = 0; + namelist = NULL; + if (save_errno == ENOMEM) { + pam_syslog(pamh, LOG_CRIT, "out of memory"); + goto get_mail_status_cleanup; + } + } + if (i > 2) + type = HAVE_OLD_MAIL; + else + type = (ctrl & PAM_EMPTY_TOO) ? HAVE_NO_MAIL : 0; + while (--i >= 0) + _pam_drop(namelist[i]); + _pam_drop(namelist); + } + } else { + if (mail_st.st_size > 0) { + if (mail_st.st_atime < mail_st.st_mtime) /* new */ + type = HAVE_NEW_MAIL; + else /* old */ + type = (ctrl & PAM_STANDARD_MAIL) ? HAVE_MAIL : HAVE_OLD_MAIL; + } else if (ctrl & PAM_EMPTY_TOO) { + type = HAVE_NO_MAIL; + } else { + type = 0; + } + } + + get_mail_status_cleanup: + memset(&mail_st, 0, sizeof(mail_st)); + D(("user has %d mail in %s folder", type, folder)); + return type; +} + +static int +report_mail(pam_handle_t *pamh, int ctrl, int type, const char *folder) +{ + int retval; + + if ((ctrl & PAM_MAIL_SILENT) || + ((ctrl & PAM_QUIET_MAIL) && type != HAVE_NEW_MAIL)) + { + D(("keeping quiet")); + retval = PAM_SUCCESS; + } + else + { + if (ctrl & PAM_STANDARD_MAIL) + switch (type) + { + case HAVE_NO_MAIL: + retval = pam_info (pamh, "%s", _("You have no mail.")); + break; + case HAVE_NEW_MAIL: + retval = pam_info (pamh, "%s", _("You have new mail.")); + break; + case HAVE_OLD_MAIL: + retval = pam_info (pamh, "%s", _("You have old mail.")); + break; + case HAVE_MAIL: + default: + retval = pam_info (pamh, "%s", _("You have mail.")); + break; + } + else + switch (type) + { + case HAVE_NO_MAIL: + retval = pam_info (pamh, _("You have no mail in folder %s."), + folder); + break; + case HAVE_NEW_MAIL: + retval = pam_info (pamh, _("You have new mail in folder %s."), + folder); + break; + case HAVE_OLD_MAIL: + retval = pam_info (pamh, _("You have old mail in folder %s."), + folder); + break; + case HAVE_MAIL: + default: + retval = pam_info (pamh, _("You have mail in folder %s."), + folder); + break; + } + } + + D(("returning %s", pam_strerror(pamh, retval))); + return retval; +} + +static int _do_mail(pam_handle_t *, int, int, const char **, int); + +/* --- authentication functions --- */ + +int +pam_sm_authenticate (pam_handle_t *pamh UNUSED, int flags UNUSED, + int argc UNUSED, const char **argv UNUSED) +{ + return PAM_IGNORE; +} + +/* Checking mail as part of authentication */ +int pam_sm_setcred(pam_handle_t *pamh, int flags, int argc, + const char **argv) +{ + if (!(flags & (PAM_ESTABLISH_CRED|PAM_DELETE_CRED))) + return PAM_IGNORE; + return _do_mail(pamh,flags,argc,argv,(flags & PAM_ESTABLISH_CRED)); +} + +/* --- session management functions --- */ + +int pam_sm_close_session(pam_handle_t *pamh,int flags,int argc + ,const char **argv) +{ + return _do_mail(pamh,flags,argc,argv,0); +} + +/* Checking mail as part of the session management */ +int pam_sm_open_session(pam_handle_t *pamh, int flags, int argc, + const char **argv) +{ + return _do_mail(pamh,flags,argc,argv,1); +} + + +/* --- The Beaf (Tm) --- */ + +static int _do_mail(pam_handle_t *pamh, int flags, int argc, + const char **argv, int est) +{ + int retval, ctrl, type; + size_t hashcount; + char *folder = NULL; + const char *user; + const char *path_mail = NULL; + const struct passwd *pwd = NULL; + + /* + * this module (un)sets the MAIL environment variable, and checks if + * the user has any new mail. + */ + + ctrl = _pam_parse(pamh, flags, argc, argv, &path_mail, &hashcount); + + retval = pam_get_user(pamh, &user, NULL); + if (retval != PAM_SUCCESS) { + pam_syslog(pamh, LOG_NOTICE, "cannot determine user name: %s", + pam_strerror(pamh, retval)); + return PAM_USER_UNKNOWN; + } + + pwd = pam_modutil_getpwnam (pamh, user); + if (pwd == NULL) { + pam_syslog(pamh, LOG_NOTICE, "user unknown"); + return PAM_USER_UNKNOWN; + } + + /* which folder? */ + + retval = get_folder(pamh, ctrl, path_mail, &folder, hashcount, pwd); + if (retval != PAM_SUCCESS) { + D(("failed to find folder")); + return retval; + } + + /* set the MAIL variable? */ + + if (!(ctrl & PAM_NO_ENV) && est) { + char *tmp; + + if (asprintf(&tmp, MAIL_ENV_FORMAT, folder) < 0) { + pam_syslog(pamh, LOG_CRIT, + "no memory for " MAIL_ENV_NAME " variable"); + retval = PAM_BUF_ERR; + goto do_mail_cleanup; + } + D(("setting env: %s", tmp)); + retval = pam_putenv(pamh, tmp); + _pam_overwrite(tmp); + _pam_drop(tmp); + if (retval != PAM_SUCCESS) { + pam_syslog(pamh, LOG_CRIT, + "unable to set " MAIL_ENV_NAME " variable"); + retval = PAM_BUF_ERR; + goto do_mail_cleanup; + } + } else { + D(("not setting " MAIL_ENV_NAME " variable")); + } + + /* + * OK. we've got the mail folder... what about its status? + */ + + if ((est && !(ctrl & PAM_NO_LOGIN)) + || (!est && (ctrl & PAM_LOGOUT_TOO))) { + PAM_MODUTIL_DEF_PRIVS(privs); + + if (pam_modutil_drop_priv(pamh, &privs, pwd)) { + retval = PAM_SESSION_ERR; + goto do_mail_cleanup; + } else { + type = get_mail_status(pamh, ctrl, folder); + if (pam_modutil_regain_priv(pamh, &privs)) { + retval = PAM_SESSION_ERR; + goto do_mail_cleanup; + } + } + + if (type != 0) { + retval = report_mail(pamh, ctrl, type, folder); + type = 0; + } + } + + /* Delete environment variable? */ + if ( ! est && ! (ctrl & PAM_NO_ENV) ) + (void) pam_putenv(pamh, MAIL_ENV_NAME); + + do_mail_cleanup: + _pam_overwrite(folder); + _pam_drop(folder); + + /* indicate success or failure */ + + return retval; +} + +/* end of module definition */ diff --git a/modules/pam_mail/tst-pam_mail b/modules/pam_mail/tst-pam_mail new file mode 100755 index 0000000..99fb7ed --- /dev/null +++ b/modules/pam_mail/tst-pam_mail @@ -0,0 +1,2 @@ +#!/bin/sh +../../tests/tst-dlopen .libs/pam_mail.so |