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-rw-r--r--modules/pam_tally2/Makefile.am43
-rw-r--r--modules/pam_tally2/Makefile.in1227
-rw-r--r--modules/pam_tally2/README156
-rw-r--r--modules/pam_tally2/README.xml46
-rw-r--r--modules/pam_tally2/pam_tally2.8244
-rw-r--r--modules/pam_tally2/pam_tally2.8.xml450
-rw-r--r--modules/pam_tally2/pam_tally2.c1035
-rw-r--r--modules/pam_tally2/pam_tally2_app.c6
-rw-r--r--modules/pam_tally2/tallylog.h52
-rwxr-xr-xmodules/pam_tally2/tst-pam_tally22
10 files changed, 3261 insertions, 0 deletions
diff --git a/modules/pam_tally2/Makefile.am b/modules/pam_tally2/Makefile.am
new file mode 100644
index 0000000..5c887ad
--- /dev/null
+++ b/modules/pam_tally2/Makefile.am
@@ -0,0 +1,43 @@
+#
+# Copyright (c) 2005, 2006, 2007, 2009 Thorsten Kukuk <kukuk@thkukuk.de>
+# Copyright (c) 2008 Red Hat, Inc.
+#
+
+CLEANFILES = *~
+MAINTAINERCLEANFILES = $(MANS) README
+
+EXTRA_DIST = $(XMLS)
+
+if HAVE_DOC
+dist_man_MANS = pam_tally2.8
+endif
+XMLS = README.xml pam_tally2.8.xml
+dist_check_SCRIPTS = tst-pam_tally2
+TESTS = $(dist_check_SCRIPTS)
+
+securelibdir = $(SECUREDIR)
+secureconfdir = $(SCONFIGDIR)
+
+noinst_HEADERS = tallylog.h
+
+AM_CFLAGS = -I$(top_srcdir)/libpam/include -I$(top_srcdir)/libpamc/include \
+ $(WARN_CFLAGS)
+
+pam_tally2_la_LDFLAGS = -no-undefined -avoid-version -module
+pam_tally2_la_LIBADD = $(top_builddir)/libpam/libpam.la $(LIBAUDIT)
+if HAVE_VERSIONING
+ pam_tally2_la_LDFLAGS += -Wl,--version-script=$(srcdir)/../modules.map
+endif
+
+pam_tally2_LDADD = $(top_builddir)/libpam/libpam.la $(LIBAUDIT)
+
+securelib_LTLIBRARIES = pam_tally2.la
+sbin_PROGRAMS = pam_tally2
+
+pam_tally2_la_SOURCES = pam_tally2.c
+pam_tally2_SOURCES = pam_tally2_app.c
+
+if ENABLE_REGENERATE_MAN
+dist_noinst_DATA = README
+-include $(top_srcdir)/Make.xml.rules
+endif
diff --git a/modules/pam_tally2/Makefile.in b/modules/pam_tally2/Makefile.in
new file mode 100644
index 0000000..4484af8
--- /dev/null
+++ b/modules/pam_tally2/Makefile.in
@@ -0,0 +1,1227 @@
+# Makefile.in generated by automake 1.16.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2018 Free Software Foundation, Inc.
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+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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+
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+#
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+ $(am__DEPENDENCIES_1)
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diff --git a/modules/pam_tally2/README b/modules/pam_tally2/README
new file mode 100644
index 0000000..a3fd30e
--- /dev/null
+++ b/modules/pam_tally2/README
@@ -0,0 +1,156 @@
+pam_tally2 — The login counter (tallying) module
+
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+
+DESCRIPTION
+
+This module maintains a count of attempted accesses, can reset count on
+success, can deny access if too many attempts fail.
+
+pam_tally2 comes in two parts: pam_tally2.so and pam_tally2. The former is the
+PAM module and the latter, a stand-alone program. pam_tally2 is an (optional)
+application which can be used to interrogate and manipulate the counter file.
+It can display user counts, set individual counts, or clear all counts. Setting
+artificially high counts may be useful for blocking users without changing
+their passwords. For example, one might find it useful to clear all counts
+every midnight from a cron job.
+
+Normally, failed attempts to access root will not cause the root account to
+become blocked, to prevent denial-of-service: if your users aren't given shell
+accounts and root may only login via su or at the machine console (not telnet/
+rsh, etc), this is safe.
+
+OPTIONS
+
+GLOBAL OPTIONS
+
+ This can be used for auth and account module types.
+
+ onerr=[fail|succeed]
+
+ If something weird happens (like unable to open the file), return with
+ PAM_SUCCESS if onerr=succeed is given, else with the corresponding PAM
+ error code.
+
+ file=/path/to/counter
+
+ File where to keep counts. Default is /var/log/tallylog.
+
+ audit
+
+ Will log the user name into the system log if the user is not found.
+
+ silent
+
+ Don't print informative messages. The messages printed without the
+ silent option leak presence of accounts on the system because they are
+ not printed for non-existing accounts.
+
+ no_log_info
+
+ Don't log informative messages via syslog(3).
+
+ debug
+
+ Always log tally count when it is incremented as a debug level message
+ to the system log.
+
+AUTH OPTIONS
+
+ Authentication phase first increments attempted login counter and checks if
+ user should be denied access. If the user is authenticated and the login
+ process continues on call to pam_setcred(3) it resets the attempts counter.
+
+ deny=n
+
+ Deny access if tally for this user exceeds n.
+
+ lock_time=n
+
+ Always deny for n seconds after failed attempt.
+
+ unlock_time=n
+
+ Allow access after n seconds after failed attempt. If this option is
+ used the user will be locked out for the specified amount of time after
+ he exceeded his maximum allowed attempts. Otherwise the account is
+ locked until the lock is removed by a manual intervention of the system
+ administrator.
+
+ magic_root
+
+ If the module is invoked by a user with uid=0 the counter is not
+ incremented. The sysadmin should use this for user launched services,
+ like su, otherwise this argument should be omitted.
+
+ even_deny_root
+
+ Root account can become unavailable.
+
+ root_unlock_time=n
+
+ This option implies even_deny_root option. Allow access after n seconds
+ to root account after failed attempt. If this option is used the root
+ user will be locked out for the specified amount of time after he
+ exceeded his maximum allowed attempts.
+
+ serialize
+
+ Serialize access to the tally file using locks. This option might be
+ used only for non-multithreaded services because it depends on the
+ fcntl locking of the tally file. Also it is a good idea to use this
+ option only in such configurations where the time between auth phase
+ and account or setcred phase is not dependent on the authenticating
+ client. Otherwise the authenticating client will be able to prevent
+ simultaneous authentications by the same user by simply artificially
+ prolonging the time the file record lock is held.
+
+ACCOUNT OPTIONS
+
+ Account phase resets attempts counter if the user is not magic root. This
+ phase can be used optionally for services which don't call pam_setcred(3)
+ correctly or if the reset should be done regardless of the failure of the
+ account phase of other modules.
+
+ magic_root
+
+ If the module is invoked by a user with uid=0 the counter is not
+ changed. The sysadmin should use this for user launched services, like
+ su, otherwise this argument should be omitted.
+
+NOTES
+
+pam_tally2 is not compatible with the old pam_tally faillog file format. This
+is caused by requirement of compatibility of the tallylog file format between
+32bit and 64bit architectures on multiarch systems.
+
+There is no setuid wrapper for access to the data file such as when the
+pam_tally2.so module is called from xscreensaver. As this would make it
+impossible to share PAM configuration with such services the following
+workaround is used: If the data file cannot be opened because of insufficient
+permissions (EACCES) the module returns PAM_IGNORE.
+
+EXAMPLES
+
+Add the following line to /etc/pam.d/login to lock the account after 4 failed
+logins. Root account will be locked as well. The accounts will be automatically
+unlocked after 20 minutes. The module does not have to be called in the account
+phase because the login calls pam_setcred(3) correctly.
+
+auth required pam_securetty.so
+auth required pam_tally2.so deny=4 even_deny_root unlock_time=1200
+auth required pam_env.so
+auth required pam_unix.so
+auth required pam_nologin.so
+account required pam_unix.so
+password required pam_unix.so
+session required pam_limits.so
+session required pam_unix.so
+session required pam_lastlog.so nowtmp
+session optional pam_mail.so standard
+
+
+AUTHOR
+
+pam_tally2 was written by Tim Baverstock and Tomas Mraz.
+
diff --git a/modules/pam_tally2/README.xml b/modules/pam_tally2/README.xml
new file mode 100644
index 0000000..aa47057
--- /dev/null
+++ b/modules/pam_tally2/README.xml
@@ -0,0 +1,46 @@
+<?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_tally2.8.xml">
+-->
+]>
+
+<article>
+
+ <articleinfo>
+
+ <title>
+ <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+ href="pam_tally2.8.xml" xpointer='xpointer(//refnamediv[@id = "pam_tally2-name"]/*)'/>
+ </title>
+
+ </articleinfo>
+
+ <section>
+ <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+ href="pam_tally2.8.xml" xpointer='xpointer(//refsect1[@id = "pam_tally2-description"]/*)'/>
+ </section>
+
+ <section>
+ <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+ href="pam_tally2.8.xml" xpointer='xpointer(//refsect1[@id = "pam_tally2-options"]/*)'/>
+ </section>
+
+ <section>
+ <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+ href="pam_tally2.8.xml" xpointer='xpointer(//refsect1[@id = "pam_tally2-notes"]/*)'/>
+ </section>
+
+ <section>
+ <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+ href="pam_tally2.8.xml" xpointer='xpointer(//refsect1[@id = "pam_tally2-examples"]/*)'/>
+ </section>
+
+ <section>
+ <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+ href="pam_tally2.8.xml" xpointer='xpointer(//refsect1[@id = "pam_tally2-author"]/*)'/>
+ </section>
+
+</article>
diff --git a/modules/pam_tally2/pam_tally2.8 b/modules/pam_tally2/pam_tally2.8
new file mode 100644
index 0000000..2673682
--- /dev/null
+++ b/modules/pam_tally2/pam_tally2.8
@@ -0,0 +1,244 @@
+'\" t
+.\" Title: pam_tally2
+.\" 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_TALLY2" "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_tally2 \- The login counter (tallying) module
+.SH "SYNOPSIS"
+.HP \w'\fBpam_tally2\&.so\fR\ 'u
+\fBpam_tally2\&.so\fR [file=\fI/path/to/counter\fR] [onerr=[\fIfail\fR|\fIsucceed\fR]] [magic_root] [even_deny_root] [deny=\fIn\fR] [lock_time=\fIn\fR] [unlock_time=\fIn\fR] [root_unlock_time=\fIn\fR] [serialize] [audit] [silent] [no_log_info] [debug]
+.HP \w'\fBpam_tally2\fR\ 'u
+\fBpam_tally2\fR [\-\-file\ \fI/path/to/counter\fR] [\-\-user\ \fIusername\fR] [\-\-reset[=\fIn\fR]] [\-\-quiet]
+.SH "DESCRIPTION"
+.PP
+This module maintains a count of attempted accesses, can reset count on success, can deny access if too many attempts fail\&.
+.PP
+pam_tally2 comes in two parts:
+\fBpam_tally2\&.so\fR
+and
+\fBpam_tally2\fR\&. The former is the PAM module and the latter, a stand\-alone program\&.
+\fBpam_tally2\fR
+is an (optional) application which can be used to interrogate and manipulate the counter file\&. It can display user counts, set individual counts, or clear all counts\&. Setting artificially high counts may be useful for blocking users without changing their passwords\&. For example, one might find it useful to clear all counts every midnight from a cron job\&.
+.PP
+Normally, failed attempts to access
+\fIroot\fR
+will
+\fBnot\fR
+cause the root account to become blocked, to prevent denial\-of\-service: if your users aren\*(Aqt given shell accounts and root may only login via
+\fBsu\fR
+or at the machine console (not telnet/rsh, etc), this is safe\&.
+.SH "OPTIONS"
+.PP
+GLOBAL OPTIONS
+.RS 4
+This can be used for
+\fIauth\fR
+and
+\fIaccount\fR
+module types\&.
+.PP
+\fBonerr=[\fR\fB\fIfail\fR\fR\fB|\fR\fB\fIsucceed\fR\fR\fB]\fR
+.RS 4
+If something weird happens (like unable to open the file), return with
+\fBPAM_SUCCESS\fR
+if
+\fBonerr=\fR\fB\fIsucceed\fR\fR
+is given, else with the corresponding PAM error code\&.
+.RE
+.PP
+\fBfile=\fR\fB\fI/path/to/counter\fR\fR
+.RS 4
+File where to keep counts\&. Default is
+/var/log/tallylog\&.
+.RE
+.PP
+\fBaudit\fR
+.RS 4
+Will log the user name into the system log if the user is not found\&.
+.RE
+.PP
+\fBsilent\fR
+.RS 4
+Don\*(Aqt print informative messages\&. The messages printed without the
+\fIsilent\fR
+option leak presence of accounts on the system because they are not printed for non\-existing accounts\&.
+.RE
+.PP
+\fBno_log_info\fR
+.RS 4
+Don\*(Aqt log informative messages via
+\fBsyslog\fR(3)\&.
+.RE
+.PP
+\fBdebug\fR
+.RS 4
+Always log tally count when it is incremented as a debug level message to the system log\&.
+.RE
+.RE
+.PP
+AUTH OPTIONS
+.RS 4
+Authentication phase first increments attempted login counter and checks if user should be denied access\&. If the user is authenticated and the login process continues on call to
+\fBpam_setcred\fR(3)
+it resets the attempts counter\&.
+.PP
+\fBdeny=\fR\fB\fIn\fR\fR
+.RS 4
+Deny access if tally for this user exceeds
+\fIn\fR\&.
+.RE
+.PP
+\fBlock_time=\fR\fB\fIn\fR\fR
+.RS 4
+Always deny for
+\fIn\fR
+seconds after failed attempt\&.
+.RE
+.PP
+\fBunlock_time=\fR\fB\fIn\fR\fR
+.RS 4
+Allow access after
+\fIn\fR
+seconds after failed attempt\&. If this option is used the user will be locked out for the specified amount of time after he exceeded his maximum allowed attempts\&. Otherwise the account is locked until the lock is removed by a manual intervention of the system administrator\&.
+.RE
+.PP
+\fBmagic_root\fR
+.RS 4
+If the module is invoked by a user with uid=0 the counter is not incremented\&. The sysadmin should use this for user launched services, like
+\fBsu\fR, otherwise this argument should be omitted\&.
+.RE
+.PP
+\fBeven_deny_root\fR
+.RS 4
+Root account can become unavailable\&.
+.RE
+.PP
+\fBroot_unlock_time=\fR\fB\fIn\fR\fR
+.RS 4
+This option implies
+\fBeven_deny_root\fR
+option\&. Allow access after
+\fIn\fR
+seconds to root account after failed attempt\&. If this option is used the root user will be locked out for the specified amount of time after he exceeded his maximum allowed attempts\&.
+.RE
+.PP
+\fBserialize\fR
+.RS 4
+Serialize access to the tally file using locks\&. This option might be used only for non\-multithreaded services because it depends on the fcntl locking of the tally file\&. Also it is a good idea to use this option only in such configurations where the time between auth phase and account or setcred phase is not dependent on the authenticating client\&. Otherwise the authenticating client will be able to prevent simultaneous authentications by the same user by simply artificially prolonging the time the file record lock is held\&.
+.RE
+.RE
+.PP
+ACCOUNT OPTIONS
+.RS 4
+Account phase resets attempts counter if the user is
+\fBnot\fR
+magic root\&. This phase can be used optionally for services which don\*(Aqt call
+\fBpam_setcred\fR(3)
+correctly or if the reset should be done regardless of the failure of the account phase of other modules\&.
+.PP
+\fBmagic_root\fR
+.RS 4
+If the module is invoked by a user with uid=0 the counter is not changed\&. The sysadmin should use this for user launched services, like
+\fBsu\fR, otherwise this argument should be omitted\&.
+.RE
+.RE
+.SH "MODULE TYPES PROVIDED"
+.PP
+The
+\fBauth\fR
+and
+\fBaccount\fR
+module types are provided\&.
+.SH "RETURN VALUES"
+.PP
+PAM_AUTH_ERR
+.RS 4
+A invalid option was given, the module was not able to retrieve the user name, no valid counter file was found, or too many failed logins\&.
+.RE
+.PP
+PAM_SUCCESS
+.RS 4
+Everything was successful\&.
+.RE
+.PP
+PAM_USER_UNKNOWN
+.RS 4
+User not known\&.
+.RE
+.SH "NOTES"
+.PP
+pam_tally2 is not compatible with the old pam_tally faillog file format\&. This is caused by requirement of compatibility of the tallylog file format between 32bit and 64bit architectures on multiarch systems\&.
+.PP
+There is no setuid wrapper for access to the data file such as when the
+\fBpam_tally2\&.so\fR
+module is called from xscreensaver\&. As this would make it impossible to share PAM configuration with such services the following workaround is used: If the data file cannot be opened because of insufficient permissions (\fBEACCES\fR) the module returns
+\fBPAM_IGNORE\fR\&.
+.SH "EXAMPLES"
+.PP
+Add the following line to
+/etc/pam\&.d/login
+to lock the account after 4 failed logins\&. Root account will be locked as well\&. The accounts will be automatically unlocked after 20 minutes\&. The module does not have to be called in the account phase because the
+\fBlogin\fR
+calls
+\fBpam_setcred\fR(3)
+correctly\&.
+.sp
+.if n \{\
+.RS 4
+.\}
+.nf
+auth required pam_securetty\&.so
+auth required pam_tally2\&.so deny=4 even_deny_root unlock_time=1200
+auth required pam_env\&.so
+auth required pam_unix\&.so
+auth required pam_nologin\&.so
+account required pam_unix\&.so
+password required pam_unix\&.so
+session required pam_limits\&.so
+session required pam_unix\&.so
+session required pam_lastlog\&.so nowtmp
+session optional pam_mail\&.so standard
+
+.fi
+.if n \{\
+.RE
+.\}
+.SH "FILES"
+.PP
+/var/log/tallylog
+.RS 4
+failure count logging file
+.RE
+.SH "SEE ALSO"
+.PP
+\fBpam.conf\fR(5),
+\fBpam.d\fR(5),
+\fBpam\fR(8)
+.SH "AUTHOR"
+.PP
+pam_tally2 was written by Tim Baverstock and Tomas Mraz\&.
diff --git a/modules/pam_tally2/pam_tally2.8.xml b/modules/pam_tally2/pam_tally2.8.xml
new file mode 100644
index 0000000..d058cf9
--- /dev/null
+++ b/modules/pam_tally2/pam_tally2.8.xml
@@ -0,0 +1,450 @@
+<?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_tally2">
+
+ <refmeta>
+ <refentrytitle>pam_tally2</refentrytitle>
+ <manvolnum>8</manvolnum>
+ <refmiscinfo class="sectdesc">Linux-PAM Manual</refmiscinfo>
+ </refmeta>
+
+ <refnamediv id="pam_tally2-name">
+ <refname>pam_tally2</refname>
+ <refpurpose>The login counter (tallying) module</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <cmdsynopsis id="pam_tally2-cmdsynopsis1">
+ <command>pam_tally2.so</command>
+ <arg choice="opt">
+ file=<replaceable>/path/to/counter</replaceable>
+ </arg>
+ <arg choice="opt">
+ onerr=[<replaceable>fail</replaceable>|<replaceable>succeed</replaceable>]
+ </arg>
+ <arg choice="opt">
+ magic_root
+ </arg>
+ <arg choice="opt">
+ even_deny_root
+ </arg>
+ <arg choice="opt">
+ deny=<replaceable>n</replaceable>
+ </arg>
+ <arg choice="opt">
+ lock_time=<replaceable>n</replaceable>
+ </arg>
+ <arg choice="opt">
+ unlock_time=<replaceable>n</replaceable>
+ </arg>
+ <arg choice="opt">
+ root_unlock_time=<replaceable>n</replaceable>
+ </arg>
+ <arg choice="opt">
+ serialize
+ </arg>
+ <arg choice="opt">
+ audit
+ </arg>
+ <arg choice="opt">
+ silent
+ </arg>
+ <arg choice="opt">
+ no_log_info
+ </arg>
+ <arg choice="opt">
+ debug
+ </arg>
+ </cmdsynopsis>
+ <cmdsynopsis id="pam_tally2-cmdsynopsis2">
+ <command>pam_tally2</command>
+ <arg choice="opt">
+ --file <replaceable>/path/to/counter</replaceable>
+ </arg>
+ <arg choice="opt">
+ --user <replaceable>username</replaceable>
+ </arg>
+ <arg choice="opt">
+ --reset[=<replaceable>n</replaceable>]
+ </arg>
+ <arg choice="opt">
+ --quiet
+ </arg>
+ </cmdsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1 id="pam_tally2-description">
+
+ <title>DESCRIPTION</title>
+
+ <para>
+ This module maintains a count of attempted accesses, can
+ reset count on success, can deny access if too many attempts fail.
+ </para>
+ <para>
+ pam_tally2 comes in two parts:
+ <emphasis remap='B'>pam_tally2.so</emphasis> and
+ <command>pam_tally2</command>. The former is the PAM module and
+ the latter, a stand-alone program. <command>pam_tally2</command>
+ is an (optional) application which can be used to interrogate and
+ manipulate the counter file. It can display user counts, set
+ individual counts, or clear all counts. Setting artificially high
+ counts may be useful for blocking users without changing their
+ passwords. For example, one might find it useful to clear all counts
+ every midnight from a cron job.
+ </para>
+ <para>
+ Normally, failed attempts to access <emphasis>root</emphasis> will
+ <emphasis remap='B'>not</emphasis> cause the root account to become
+ blocked, to prevent denial-of-service: if your users aren't given
+ shell accounts and root may only login via <command>su</command> or
+ at the machine console (not telnet/rsh, etc), this is safe.
+ </para>
+ </refsect1>
+
+ <refsect1 id="pam_tally2-options">
+
+ <title>OPTIONS</title>
+ <variablelist>
+ <varlistentry>
+ <term>
+ GLOBAL OPTIONS
+ </term>
+ <listitem>
+ <para>
+ This can be used for <emphasis>auth</emphasis> and
+ <emphasis>account</emphasis> module types.
+ </para>
+ <variablelist>
+ <varlistentry>
+ <term>
+ <option>onerr=[<replaceable>fail</replaceable>|<replaceable>succeed</replaceable>]</option>
+ </term>
+ <listitem>
+ <para>
+ If something weird happens (like unable to open the file),
+ return with <errorcode>PAM_SUCCESS</errorcode> if
+ <option>onerr=<replaceable>succeed</replaceable></option>
+ is given, else with the corresponding PAM error code.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <option>file=<replaceable>/path/to/counter</replaceable></option>
+ </term>
+ <listitem>
+ <para>
+ File where to keep counts. Default is
+ <filename>/var/log/tallylog</filename>.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <option>audit</option>
+ </term>
+ <listitem>
+ <para>
+ Will log the user name into the system log if the user is not found.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <option>silent</option>
+ </term>
+ <listitem>
+ <para>
+ Don't print informative messages. The messages printed without the <emphasis>silent</emphasis> option leak presence of accounts on the system because they are not printed for non-existing accounts.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <option>no_log_info</option>
+ </term>
+ <listitem>
+ <para>
+ Don't log informative messages via <citerefentry><refentrytitle>syslog</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <option>debug</option>
+ </term>
+ <listitem>
+ <para>
+ Always log tally count when it is incremented as a debug level message to the system log.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>
+ AUTH OPTIONS
+ </term>
+ <listitem>
+ <para>
+ Authentication phase first increments attempted login counter and
+ checks if user should be denied access. If the user is authenticated
+ and the login process continues on call to <citerefentry>
+ <refentrytitle>pam_setcred</refentrytitle><manvolnum>3</manvolnum>
+ </citerefentry> it resets the attempts counter.
+ </para>
+ <variablelist>
+ <varlistentry>
+ <term>
+ <option>deny=<replaceable>n</replaceable></option>
+ </term>
+ <listitem>
+ <para>
+ Deny access if tally for this user exceeds
+ <replaceable>n</replaceable>.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <option>lock_time=<replaceable>n</replaceable></option>
+ </term>
+ <listitem>
+ <para>
+ Always deny for <replaceable>n</replaceable> seconds
+ after failed attempt.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <option>unlock_time=<replaceable>n</replaceable></option>
+ </term>
+ <listitem>
+ <para>
+ Allow access after <replaceable>n</replaceable> seconds
+ after failed attempt. If this option is used the user will
+ be locked out for the specified amount of time after he
+ exceeded his maximum allowed attempts. Otherwise the
+ account is locked until the lock is removed by a manual
+ intervention of the system administrator.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <option>magic_root</option>
+ </term>
+ <listitem>
+ <para>
+ If the module is invoked by a user with uid=0 the
+ counter is not incremented. The sysadmin should use this
+ for user launched services, like <command>su</command>,
+ otherwise this argument should be omitted.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <option>even_deny_root</option>
+ </term>
+ <listitem>
+ <para>
+ Root account can become unavailable.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <option>root_unlock_time=<replaceable>n</replaceable></option>
+ </term>
+ <listitem>
+ <para>
+ This option implies <option>even_deny_root</option> option.
+ Allow access after <replaceable>n</replaceable> seconds
+ to root account after failed attempt. If this option is used
+ the root user will be locked out for the specified amount of
+ time after he exceeded his maximum allowed attempts.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <option>serialize</option>
+ </term>
+ <listitem>
+ <para>
+ Serialize access to the tally file using locks. This option might
+ be used only for non-multithreaded services because it depends on
+ the fcntl locking of the tally file. Also it is a good idea to use
+ this option only in such configurations where the time between auth
+ phase and account or setcred phase is not dependent on the
+ authenticating client. Otherwise the authenticating client will be
+ able to prevent simultaneous authentications by the same user by
+ simply artificially prolonging the time the file record lock is held.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </listitem>
+ </varlistentry>
+
+
+ <varlistentry>
+ <term>
+ ACCOUNT OPTIONS
+ </term>
+ <listitem>
+ <para>
+ Account phase resets attempts counter if the user is
+ <emphasis remap='B'>not</emphasis> magic root.
+ This phase can be used optionally for services which don't call
+ <citerefentry>
+ <refentrytitle>pam_setcred</refentrytitle><manvolnum>3</manvolnum>
+ </citerefentry> correctly or if the reset should be done regardless
+ of the failure of the account phase of other modules.
+ </para>
+ <variablelist>
+ <varlistentry>
+ <term>
+ <option>magic_root</option>
+ </term>
+ <listitem>
+ <para>
+ If the module is invoked by a user with uid=0 the
+ counter is not changed. The sysadmin should use this
+ for user launched services, like <command>su</command>,
+ otherwise this argument should be omitted.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1 id="pam_tally2-types">
+ <title>MODULE TYPES PROVIDED</title>
+ <para>
+ The <option>auth</option> and <option>account</option>
+ module types are provided.
+ </para>
+ </refsect1>
+
+ <refsect1 id='pam_tally2-return_values'>
+ <title>RETURN VALUES</title>
+ <variablelist>
+ <varlistentry>
+ <term>PAM_AUTH_ERR</term>
+ <listitem>
+ <para>
+ A invalid option was given, the module was not able
+ to retrieve the user name, no valid counter file
+ was found, or too many failed logins.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>PAM_SUCCESS</term>
+ <listitem>
+ <para>
+ Everything was successful.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>PAM_USER_UNKNOWN</term>
+ <listitem>
+ <para>
+ User not known.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1 id='pam_tally2-notes'>
+ <title>NOTES</title>
+ <para>
+ pam_tally2 is not compatible with the old pam_tally faillog file format.
+ This is caused by requirement of compatibility of the tallylog file
+ format between 32bit and 64bit architectures on multiarch systems.
+ </para>
+ <para>
+ There is no setuid wrapper for access to the data file such as when the
+ <emphasis remap='B'>pam_tally2.so</emphasis> module is called from
+ xscreensaver. As this would make it impossible to share PAM configuration
+ with such services the following workaround is used: If the data file
+ cannot be opened because of insufficient permissions
+ (<errorcode>EACCES</errorcode>) the module returns
+ <errorcode>PAM_IGNORE</errorcode>.
+ </para>
+ </refsect1>
+
+ <refsect1 id='pam_tally2-examples'>
+ <title>EXAMPLES</title>
+ <para>
+ Add the following line to <filename>/etc/pam.d/login</filename> to
+ lock the account after 4 failed logins. Root account will be locked
+ as well. The accounts will be automatically unlocked after 20 minutes.
+ The module does not have to be called in the account phase because the
+ <command>login</command> calls <citerefentry>
+ <refentrytitle>pam_setcred</refentrytitle><manvolnum>3</manvolnum>
+ </citerefentry> correctly.
+ </para>
+ <programlisting>
+auth required pam_securetty.so
+auth required pam_tally2.so deny=4 even_deny_root unlock_time=1200
+auth required pam_env.so
+auth required pam_unix.so
+auth required pam_nologin.so
+account required pam_unix.so
+password required pam_unix.so
+session required pam_limits.so
+session required pam_unix.so
+session required pam_lastlog.so nowtmp
+session optional pam_mail.so standard
+ </programlisting>
+ </refsect1>
+
+ <refsect1 id="pam_tally2-files">
+ <title>FILES</title>
+ <variablelist>
+ <varlistentry>
+ <term><filename>/var/log/tallylog</filename></term>
+ <listitem>
+ <para>failure count logging file</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1 id='pam_tally2-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_tally2-author'>
+ <title>AUTHOR</title>
+ <para>
+ pam_tally2 was written by Tim Baverstock and Tomas Mraz.
+ </para>
+ </refsect1>
+
+</refentry>
diff --git a/modules/pam_tally2/pam_tally2.c b/modules/pam_tally2/pam_tally2.c
new file mode 100644
index 0000000..117df69
--- /dev/null
+++ b/modules/pam_tally2/pam_tally2.c
@@ -0,0 +1,1035 @@
+/*
+ * pam_tally2 module
+ *
+ * By Tim Baverstock <warwick@mmm.co.uk>, Multi Media Machine Ltd.
+ * 5 March 1997
+ *
+ * Stuff stolen from pam_rootok and pam_listfile
+ *
+ * Changes by Tomas Mraz <tmraz@redhat.com> 5 January 2005, 26 January 2006
+ * Audit option added for Tomas patch by Sebastien Tricaud <toady@gscore.org> 13 January 2005
+ * Portions Copyright 2006, Red Hat, Inc.
+ * Portions Copyright 1989 - 1993, Julianne Frances Haugh
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Julianne F. Haugh nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "config.h"
+
+#if defined(MAIN) && defined(MEMORY_DEBUG)
+# undef exit
+#endif /* defined(MAIN) && defined(MEMORY_DEBUG) */
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <syslog.h>
+#include <pwd.h>
+#include <time.h>
+#include <stdint.h>
+#include <errno.h>
+#ifdef HAVE_LIBAUDIT
+#include <libaudit.h>
+#endif
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include <fcntl.h>
+#include <signal.h>
+#include "tallylog.h"
+
+#ifndef TRUE
+#define TRUE 1L
+#define FALSE 0L
+#endif
+
+#ifndef HAVE_FSEEKO
+#define fseeko fseek
+#endif
+
+#ifndef MAIN
+#include <security/pam_ext.h>
+#endif
+#include <security/pam_modutil.h>
+#include <security/pam_modules.h>
+#include "pam_inline.h"
+
+/*---------------------------------------------------------------------*/
+
+#define DEFAULT_LOGFILE "/var/log/tallylog"
+#define MODULE_NAME "pam_tally2"
+
+#define tally_t uint16_t
+#define TALLY_HI ((tally_t)~0L)
+
+struct tally_options {
+ const char *filename;
+ tally_t deny;
+ long lock_time;
+ long unlock_time;
+ long root_unlock_time;
+ unsigned int ctrl;
+};
+
+#define PHASE_UNKNOWN 0
+#define PHASE_AUTH 1
+#define PHASE_ACCOUNT 2
+#define PHASE_SESSION 3
+
+#define OPT_MAGIC_ROOT 01
+#define OPT_FAIL_ON_ERROR 02
+#define OPT_DENY_ROOT 04
+#define OPT_QUIET 040
+#define OPT_AUDIT 0100
+#define OPT_NOLOGNOTICE 0400
+#define OPT_SERIALIZE 01000
+#define OPT_DEBUG 02000
+
+#define MAX_LOCK_WAITING_TIME 10
+
+/*---------------------------------------------------------------------*/
+
+/* some syslogging */
+
+#ifdef MAIN
+#define pam_syslog tally_log
+static void
+tally_log (const pam_handle_t *pamh UNUSED, int priority UNUSED,
+ const char *fmt, ...)
+{
+ va_list args;
+
+ va_start(args, fmt);
+ fprintf(stderr, "%s: ", MODULE_NAME);
+ vfprintf(stderr, fmt, args);
+ fprintf(stderr,"\n");
+ va_end(args);
+}
+
+#define pam_modutil_getpwnam(pamh, user) getpwnam(user)
+#endif
+
+/*---------------------------------------------------------------------*/
+
+/* --- Support function: parse arguments --- */
+
+#ifndef MAIN
+
+static void
+log_phase_no_auth(pam_handle_t *pamh, int phase, const char *argv)
+{
+ if ( phase != PHASE_AUTH ) {
+ pam_syslog(pamh, LOG_ERR,
+ "option %s allowed in auth phase only", argv);
+ }
+}
+
+static int
+tally_parse_args(pam_handle_t *pamh, struct tally_options *opts,
+ int phase, int argc, const char **argv)
+{
+ memset(opts, 0, sizeof(*opts));
+ opts->filename = DEFAULT_LOGFILE;
+ opts->ctrl = OPT_FAIL_ON_ERROR;
+ opts->root_unlock_time = -1;
+
+ for ( ; argc-- > 0; ++argv ) {
+ const char *str;
+
+ if ((str = pam_str_skip_prefix(*argv, "file=")) != NULL) {
+ const char *from = str;
+ if ( *from!='/' ) {
+ pam_syslog(pamh, LOG_ERR,
+ "filename not /rooted; %s", *argv);
+ return PAM_AUTH_ERR;
+ }
+ opts->filename = from;
+ }
+ else if ( ! strcmp( *argv, "onerr=fail" ) ) {
+ opts->ctrl |= OPT_FAIL_ON_ERROR;
+ }
+ else if ( ! strcmp( *argv, "onerr=succeed" ) ) {
+ opts->ctrl &= ~OPT_FAIL_ON_ERROR;
+ }
+ else if ( ! strcmp( *argv, "magic_root" ) ) {
+ opts->ctrl |= OPT_MAGIC_ROOT;
+ }
+ else if ( ! strcmp( *argv, "serialize" ) ) {
+ opts->ctrl |= OPT_SERIALIZE;
+ }
+ else if ( ! strcmp( *argv, "debug" ) ) {
+ opts->ctrl |= OPT_DEBUG;
+ }
+ else if ( ! strcmp( *argv, "even_deny_root_account" ) ||
+ ! strcmp( *argv, "even_deny_root" ) ) {
+ log_phase_no_auth(pamh, phase, *argv);
+ opts->ctrl |= OPT_DENY_ROOT;
+ }
+ else if ((str = pam_str_skip_prefix(*argv, "deny=")) != NULL) {
+ log_phase_no_auth(pamh, phase, *argv);
+ if (sscanf(str, "%hu", &opts->deny) != 1) {
+ pam_syslog(pamh, LOG_ERR, "bad number supplied: %s", *argv);
+ return PAM_AUTH_ERR;
+ }
+ }
+ else if ((str = pam_str_skip_prefix(*argv, "lock_time=")) != NULL) {
+ log_phase_no_auth(pamh, phase, *argv);
+ if (sscanf(str, "%ld", &opts->lock_time) != 1) {
+ pam_syslog(pamh, LOG_ERR, "bad number supplied: %s", *argv);
+ return PAM_AUTH_ERR;
+ }
+ }
+ else if ((str = pam_str_skip_prefix(*argv, "unlock_time=")) != NULL) {
+ log_phase_no_auth(pamh, phase, *argv);
+ if (sscanf(str, "%ld", &opts->unlock_time) != 1) {
+ pam_syslog(pamh, LOG_ERR, "bad number supplied: %s", *argv);
+ return PAM_AUTH_ERR;
+ }
+ }
+ else if ((str = pam_str_skip_prefix(*argv, "root_unlock_time=")) != NULL) {
+ log_phase_no_auth(pamh, phase, *argv);
+ if (sscanf(str, "%ld", &opts->root_unlock_time) != 1) {
+ pam_syslog(pamh, LOG_ERR, "bad number supplied: %s", *argv);
+ return PAM_AUTH_ERR;
+ }
+ opts->ctrl |= OPT_DENY_ROOT; /* even_deny_root implied */
+ }
+ else if ( ! strcmp( *argv, "quiet" ) ||
+ ! strcmp ( *argv, "silent")) {
+ opts->ctrl |= OPT_QUIET;
+ }
+ else if ( ! strcmp ( *argv, "no_log_info") ) {
+ opts->ctrl |= OPT_NOLOGNOTICE;
+ }
+ else if ( ! strcmp ( *argv, "audit") ) {
+ opts->ctrl |= OPT_AUDIT;
+ }
+ else {
+ pam_syslog(pamh, LOG_ERR, "unknown option: %s", *argv);
+ }
+ }
+
+ if (opts->root_unlock_time == -1)
+ opts->root_unlock_time = opts->unlock_time;
+
+ return PAM_SUCCESS;
+}
+
+#endif /* #ifndef MAIN */
+
+/*---------------------------------------------------------------------*/
+
+/* --- Support function: get uid (and optionally username) from PAM or
+ cline_user --- */
+
+#ifdef MAIN
+static const char *cline_user=0; /* cline_user is used in the administration prog */
+#endif
+
+static int
+pam_get_uid(pam_handle_t *pamh, uid_t *uid, const char **userp, struct tally_options *opts)
+{
+ const char *user = NULL;
+ struct passwd *pw;
+
+#ifdef MAIN
+ user = cline_user;
+
+ if ( !user ) {
+ pam_syslog(pamh, LOG_NOTICE, "cannot determine user name");
+ return PAM_AUTH_ERR;
+ }
+#else
+ if ((pam_get_user( pamh, &user, NULL )) != PAM_SUCCESS) {
+ user = NULL;
+ }
+#endif
+
+ if ( ! ( pw = pam_modutil_getpwnam( pamh, user ) ) ) {
+ opts->ctrl & OPT_AUDIT ?
+ pam_syslog(pamh, LOG_NOTICE, "pam_get_uid; no such user %s", user) :
+ pam_syslog(pamh, LOG_NOTICE, "pam_get_uid; no such user");
+ return PAM_USER_UNKNOWN;
+ }
+
+ if ( uid ) *uid = pw->pw_uid;
+ if ( userp ) *userp = user;
+ return PAM_SUCCESS;
+}
+
+/*---------------------------------------------------------------------*/
+
+/* --- Support functions: set/get tally data --- */
+
+#ifndef MAIN
+
+struct tally_data {
+ time_t time;
+ int tfile;
+};
+
+static void
+_cleanup(pam_handle_t *pamh UNUSED, void *void_data, int error_status UNUSED)
+{
+ struct tally_data *data = void_data;
+ if (data->tfile != -1)
+ close(data->tfile);
+ free(data);
+}
+
+static void
+tally_set_data( pam_handle_t *pamh, time_t oldtime, int tfile )
+{
+ struct tally_data *data;
+
+ if ( (data=malloc(sizeof(*data))) != NULL ) {
+ data->time = oldtime;
+ data->tfile = tfile;
+ pam_set_data(pamh, MODULE_NAME, (void *)data, _cleanup);
+ }
+}
+
+static int
+tally_get_data( pam_handle_t *pamh, time_t *oldtime, int *tfile )
+{
+ int rv;
+ const void *void_data;
+ const struct tally_data *data;
+
+ rv = pam_get_data(pamh, MODULE_NAME, &void_data);
+ if ( rv == PAM_SUCCESS && void_data != NULL && oldtime != NULL ) {
+ data = void_data;
+ *oldtime = data->time;
+ *tfile = data->tfile;
+ }
+ else {
+ rv = -1;
+ *oldtime = 0;
+ }
+ return rv;
+}
+#endif /* #ifndef MAIN */
+
+/*---------------------------------------------------------------------*/
+
+/* --- Support function: open/create tallyfile and return tally for uid --- */
+
+/* If on entry tallyfile doesn't exist, creation is attempted. */
+
+static void
+alarm_handler(int sig UNUSED)
+{ /* we just need to ignore it */
+}
+
+static int
+get_tally(pam_handle_t *pamh, uid_t uid, const char *filename,
+ int *tfile, struct tallylog *tally, unsigned int ctrl)
+{
+ struct stat fileinfo;
+ int lstat_ret;
+ void *void_tally = tally;
+ int preopened = 0;
+
+ if (*tfile != -1) {
+ preopened = 1;
+ goto skip_open;
+ }
+
+ lstat_ret = lstat(filename, &fileinfo);
+ if (lstat_ret) {
+ *tfile=open(filename, O_APPEND|O_CREAT, S_IRUSR|S_IWUSR);
+ /* Create file, or append-open in pathological case. */
+ if (*tfile == -1) {
+#ifndef MAIN
+ if (errno == EACCES) {
+ return PAM_IGNORE; /* called with insufficient access rights */
+ }
+#endif
+ pam_syslog(pamh, LOG_ALERT, "Couldn't create %s: %m", filename);
+ return PAM_AUTH_ERR;
+ }
+ lstat_ret = fstat(*tfile, &fileinfo);
+ close(*tfile);
+ }
+
+ *tfile = -1;
+
+ if ( lstat_ret ) {
+ pam_syslog(pamh, LOG_ALERT, "Couldn't stat %s", filename);
+ return PAM_AUTH_ERR;
+ }
+
+ if ((fileinfo.st_mode & S_IWOTH) || !S_ISREG(fileinfo.st_mode)) {
+ /* If the file is world writable or is not a
+ normal file, return error */
+ pam_syslog(pamh, LOG_ALERT,
+ "%s is either world writable or not a normal file",
+ filename);
+ return PAM_AUTH_ERR;
+ }
+
+ if ((*tfile = open(filename, O_RDWR)) == -1) {
+#ifndef MAIN
+ if (errno == EACCES) /* called with insufficient access rights */
+ return PAM_IGNORE;
+#endif
+ pam_syslog(pamh, LOG_ALERT, "Error opening %s for update: %m", filename);
+
+ return PAM_AUTH_ERR;
+ }
+
+skip_open:
+ if (lseek(*tfile, (off_t)uid*(off_t)sizeof(*tally), SEEK_SET) == (off_t)-1) {
+ pam_syslog(pamh, LOG_ALERT, "lseek failed for %s: %m", filename);
+ if (!preopened) {
+ close(*tfile);
+ *tfile = -1;
+ }
+ return PAM_AUTH_ERR;
+ }
+
+ if (!preopened && (ctrl & OPT_SERIALIZE)) {
+ /* this code is not thread safe as it uses fcntl locks and alarm()
+ so never use serialize with multithreaded services */
+ struct sigaction newsa, oldsa;
+ unsigned int oldalarm;
+ int rv;
+
+ memset(&newsa, '\0', sizeof(newsa));
+ newsa.sa_handler = alarm_handler;
+ sigaction(SIGALRM, &newsa, &oldsa);
+ oldalarm = alarm(MAX_LOCK_WAITING_TIME);
+
+ rv = lockf(*tfile, F_LOCK, sizeof(*tally));
+ /* lock failure is not fatal, we attempt to read the tally anyway */
+
+ /* reinstate the eventual old alarm handler */
+ if (rv == -1 && errno == EINTR) {
+ if (oldalarm > MAX_LOCK_WAITING_TIME) {
+ oldalarm -= MAX_LOCK_WAITING_TIME;
+ } else if (oldalarm > 0) {
+ oldalarm = 1;
+ }
+ }
+ sigaction(SIGALRM, &oldsa, NULL);
+ alarm(oldalarm);
+ }
+
+ if (pam_modutil_read(*tfile, void_tally, sizeof(*tally)) != sizeof(*tally)) {
+ memset(tally, 0, sizeof(*tally));
+ }
+
+ tally->fail_line[sizeof(tally->fail_line)-1] = '\0';
+
+ return PAM_SUCCESS;
+}
+
+/*---------------------------------------------------------------------*/
+
+/* --- Support function: update tallyfile with tally!=TALLY_HI --- */
+
+static int
+set_tally(pam_handle_t *pamh, uid_t uid,
+ const char *filename, int *tfile, struct tallylog *tally)
+{
+ void *void_tally = tally;
+ if (tally->fail_cnt != TALLY_HI) {
+ if (lseek(*tfile, (off_t)uid * sizeof(*tally), SEEK_SET) == (off_t)-1) {
+ pam_syslog(pamh, LOG_ALERT, "lseek failed for %s: %m", filename);
+ return PAM_AUTH_ERR;
+ }
+ if (pam_modutil_write(*tfile, void_tally, sizeof(*tally)) != sizeof(*tally)) {
+ pam_syslog(pamh, LOG_ALERT, "update (write) failed for %s: %m", filename);
+ return PAM_AUTH_ERR;
+ }
+ }
+
+ return PAM_SUCCESS;
+}
+
+/*---------------------------------------------------------------------*/
+
+/* --- PAM bits --- */
+
+#ifndef MAIN
+
+#define RETURN_ERROR(i) return ((opts->ctrl & OPT_FAIL_ON_ERROR)?(i):(PAM_SUCCESS))
+
+/*---------------------------------------------------------------------*/
+
+static int
+tally_check (tally_t oldcnt, time_t oldtime, pam_handle_t *pamh, uid_t uid,
+ const char *user, struct tally_options *opts,
+ struct tallylog *tally)
+{
+ int rv = PAM_SUCCESS;
+ int loglevel = LOG_DEBUG;
+#ifdef HAVE_LIBAUDIT
+ char buf[64];
+ int audit_fd = -1;
+ const void *rhost = NULL, *tty = NULL;
+#endif
+
+ if ((opts->ctrl & OPT_MAGIC_ROOT) && getuid() == 0) {
+ return PAM_SUCCESS;
+ }
+ /* magic_root skips tally check */
+#ifdef HAVE_LIBAUDIT
+ audit_fd = audit_open();
+ /* If there is an error & audit support is in the kernel report error */
+ if ((audit_fd < 0) && !(errno == EINVAL || errno == EPROTONOSUPPORT ||
+ errno == EAFNOSUPPORT))
+ return PAM_SYSTEM_ERR;
+ (void)pam_get_item(pamh, PAM_TTY, &tty);
+ (void)pam_get_item(pamh, PAM_RHOST, &rhost);
+#endif
+ if (opts->deny != 0 && /* deny==0 means no deny */
+ tally->fail_cnt > opts->deny && /* tally>deny means exceeded */
+ ((opts->ctrl & OPT_DENY_ROOT) || uid)) { /* even_deny stops uid check */
+#ifdef HAVE_LIBAUDIT
+ if (tally->fail_cnt == opts->deny+1) {
+ /* First say that max number was hit. */
+ snprintf(buf, sizeof(buf), "pam_tally2 uid=%u ", uid);
+ audit_log_user_message(audit_fd, AUDIT_ANOM_LOGIN_FAILURES, buf,
+ rhost, NULL, tty, 1);
+ }
+#endif
+ if (uid) {
+ /* Unlock time check */
+ if (opts->unlock_time && oldtime) {
+ if (opts->unlock_time + oldtime <= time(NULL)) {
+ /* ignore deny check after unlock_time elapsed */
+#ifdef HAVE_LIBAUDIT
+ snprintf(buf, sizeof(buf), "pam_tally2 uid=%u ", uid);
+ audit_log_user_message(audit_fd, AUDIT_RESP_ACCT_UNLOCK_TIMED, buf,
+ rhost, NULL, tty, 1);
+#endif
+ rv = PAM_SUCCESS;
+ goto cleanup;
+ }
+ }
+ } else {
+ /* Root unlock time check */
+ if (opts->root_unlock_time && oldtime) {
+ if (opts->root_unlock_time + oldtime <= time(NULL)) {
+ /* ignore deny check after unlock_time elapsed */
+#ifdef HAVE_LIBAUDIT
+ snprintf(buf, sizeof(buf), "pam_tally2 uid=%u ", uid);
+ audit_log_user_message(audit_fd, AUDIT_RESP_ACCT_UNLOCK_TIMED, buf,
+ rhost, NULL, tty, 1);
+#endif
+ rv = PAM_SUCCESS;
+ goto cleanup;
+ }
+ }
+ }
+
+#ifdef HAVE_LIBAUDIT
+ if (tally->fail_cnt == opts->deny+1) {
+ /* First say that max number was hit. */
+ audit_log_user_message(audit_fd, AUDIT_RESP_ACCT_LOCK, buf,
+ rhost, NULL, tty, 1);
+ }
+#endif
+
+ if (!(opts->ctrl & OPT_QUIET)) {
+ pam_info(pamh, _("The account is locked due to %u failed logins."),
+ (unsigned int)tally->fail_cnt);
+ }
+ loglevel = LOG_NOTICE;
+ rv = PAM_AUTH_ERR; /* Only unconditional failure */
+ goto cleanup;
+ }
+
+ /* Lock time check */
+ if (opts->lock_time && oldtime) {
+ if (opts->lock_time + oldtime > time(NULL)) {
+ /* don't increase fail_cnt or update fail_time when
+ lock_time applies */
+ tally->fail_cnt = oldcnt;
+ tally->fail_time = oldtime;
+
+ if (!(opts->ctrl & OPT_QUIET)) {
+ pam_info(pamh,
+ _("The account is temporarily locked (%ld seconds left)."),
+ (long int) (oldtime+opts->lock_time-time(NULL)));
+ }
+ if (!(opts->ctrl & OPT_NOLOGNOTICE)) {
+ pam_syslog(pamh, LOG_NOTICE,
+ "user %s (%lu) has time limit [%lds left]"
+ " since last failure.",
+ user, (unsigned long)uid,
+ (long int) (oldtime+opts->lock_time-time(NULL)));
+ }
+ rv = PAM_AUTH_ERR;
+ goto cleanup;
+ }
+ }
+
+cleanup:
+ if (!(opts->ctrl & OPT_NOLOGNOTICE) && (loglevel != LOG_DEBUG || opts->ctrl & OPT_DEBUG)) {
+ pam_syslog(pamh, loglevel,
+ "user %s (%lu) tally %hu, deny %hu",
+ user, (unsigned long)uid, tally->fail_cnt, opts->deny);
+ }
+#ifdef HAVE_LIBAUDIT
+ if (audit_fd != -1) {
+ close(audit_fd);
+ }
+#endif
+ return rv;
+}
+
+/* --- tally bump function: bump tally for uid by (signed) inc --- */
+
+static int
+tally_bump (int inc, time_t *oldtime, pam_handle_t *pamh,
+ uid_t uid, const char *user, struct tally_options *opts, int *tfile)
+{
+ struct tallylog tally;
+ tally_t oldcnt;
+ const void *remote_host = NULL;
+ int i, rv;
+
+ tally.fail_cnt = 0; /* !TALLY_HI --> Log opened for update */
+
+ i = get_tally(pamh, uid, opts->filename, tfile, &tally, opts->ctrl);
+ if (i != PAM_SUCCESS) {
+ if (*tfile != -1) {
+ close(*tfile);
+ *tfile = -1;
+ }
+ RETURN_ERROR(i);
+ }
+
+ /* to remember old fail time (for locktime) */
+ if (oldtime) {
+ *oldtime = (time_t)tally.fail_time;
+ }
+
+ tally.fail_time = time(NULL);
+
+ (void) pam_get_item(pamh, PAM_RHOST, &remote_host);
+ if (!remote_host) {
+ (void) pam_get_item(pamh, PAM_TTY, &remote_host);
+ if (!remote_host) {
+ remote_host = "unknown";
+ }
+ }
+
+ strncpy(tally.fail_line, remote_host,
+ sizeof(tally.fail_line)-1);
+ tally.fail_line[sizeof(tally.fail_line)-1] = 0;
+
+ oldcnt = tally.fail_cnt;
+
+ if (!(opts->ctrl & OPT_MAGIC_ROOT) || getuid()) {
+ /* magic_root doesn't change tally */
+ tally.fail_cnt += inc;
+
+ if (tally.fail_cnt == TALLY_HI) { /* Overflow *and* underflow. :) */
+ tally.fail_cnt -= inc;
+ pam_syslog(pamh, LOG_ALERT, "Tally %sflowed for user %s",
+ (inc<0)?"under":"over",user);
+ }
+ }
+
+ rv = tally_check(oldcnt, *oldtime, pamh, uid, user, opts, &tally);
+
+ i = set_tally(pamh, uid, opts->filename, tfile, &tally);
+ if (i != PAM_SUCCESS) {
+ if (*tfile != -1) {
+ close(*tfile);
+ *tfile = -1;
+ }
+ if (rv == PAM_SUCCESS)
+ RETURN_ERROR( i );
+ /* fallthrough */
+ } else if (!(opts->ctrl & OPT_SERIALIZE)) {
+ close(*tfile);
+ *tfile = -1;
+ }
+
+ return rv;
+}
+
+static int
+tally_reset (pam_handle_t *pamh, uid_t uid, struct tally_options *opts, int old_tfile)
+{
+ struct tallylog tally;
+ int tfile = old_tfile;
+ int i;
+
+ /* resets only if not magic root */
+
+ if ((opts->ctrl & OPT_MAGIC_ROOT) && getuid() == 0) {
+ return PAM_SUCCESS;
+ }
+
+ tally.fail_cnt = 0; /* !TALLY_HI --> Log opened for update */
+
+ i=get_tally(pamh, uid, opts->filename, &tfile, &tally, opts->ctrl);
+ if (i != PAM_SUCCESS) {
+ if (tfile != old_tfile) /* the descriptor is not owned by pam data */
+ close(tfile);
+ RETURN_ERROR(i);
+ }
+
+ memset(&tally, 0, sizeof(tally));
+
+ i=set_tally(pamh, uid, opts->filename, &tfile, &tally);
+ if (i != PAM_SUCCESS) {
+ if (tfile != old_tfile) /* the descriptor is not owned by pam data */
+ close(tfile);
+ RETURN_ERROR(i);
+ }
+
+ if (tfile != old_tfile)
+ close(tfile);
+
+ return PAM_SUCCESS;
+}
+
+/*---------------------------------------------------------------------*/
+
+/* --- authentication management functions (only) --- */
+
+int
+pam_sm_authenticate(pam_handle_t *pamh, int flags UNUSED,
+ int argc, const char **argv)
+{
+ int
+ rv, tfile = -1;
+ time_t
+ oldtime = 0;
+ struct tally_options
+ options, *opts = &options;
+ uid_t
+ uid;
+ const char
+ *user;
+
+ rv = tally_parse_args(pamh, opts, PHASE_AUTH, argc, argv);
+ if (rv != PAM_SUCCESS)
+ RETURN_ERROR(rv);
+
+ if (flags & PAM_SILENT)
+ opts->ctrl |= OPT_QUIET;
+
+ rv = pam_get_uid(pamh, &uid, &user, opts);
+ if (rv != PAM_SUCCESS)
+ RETURN_ERROR(rv);
+
+ rv = tally_bump(1, &oldtime, pamh, uid, user, opts, &tfile);
+
+ tally_set_data(pamh, oldtime, tfile);
+
+ return rv;
+}
+
+int
+pam_sm_setcred(pam_handle_t *pamh, int flags UNUSED,
+ int argc, const char **argv)
+{
+ int
+ rv, tfile = -1;
+ time_t
+ oldtime = 0;
+ struct tally_options
+ options, *opts = &options;
+ uid_t
+ uid;
+ const char
+ *user;
+
+ rv = tally_parse_args(pamh, opts, PHASE_AUTH, argc, argv);
+ if ( rv != PAM_SUCCESS )
+ RETURN_ERROR( rv );
+
+ rv = pam_get_uid(pamh, &uid, &user, opts);
+ if ( rv != PAM_SUCCESS )
+ RETURN_ERROR( rv );
+
+ if ( tally_get_data(pamh, &oldtime, &tfile) != 0 )
+ /* no data found */
+ return PAM_SUCCESS;
+
+ rv = tally_reset(pamh, uid, opts, tfile);
+
+ pam_set_data(pamh, MODULE_NAME, NULL, NULL);
+
+ return rv;
+}
+
+/*---------------------------------------------------------------------*/
+
+/* --- authentication management functions (only) --- */
+
+/* To reset failcount of user on successful login */
+
+int
+pam_sm_acct_mgmt(pam_handle_t *pamh, int flags UNUSED,
+ int argc, const char **argv)
+{
+ int
+ rv, tfile = -1;
+ time_t
+ oldtime = 0;
+ struct tally_options
+ options, *opts = &options;
+ uid_t
+ uid;
+ const char
+ *user;
+
+ rv = tally_parse_args(pamh, opts, PHASE_ACCOUNT, argc, argv);
+ if ( rv != PAM_SUCCESS )
+ RETURN_ERROR( rv );
+
+ rv = pam_get_uid(pamh, &uid, &user, opts);
+ if ( rv != PAM_SUCCESS )
+ RETURN_ERROR( rv );
+
+ if ( tally_get_data(pamh, &oldtime, &tfile) != 0 )
+ /* no data found */
+ return PAM_SUCCESS;
+
+ rv = tally_reset(pamh, uid, opts, tfile);
+
+ pam_set_data(pamh, MODULE_NAME, NULL, NULL);
+
+ return rv;
+}
+
+/*-----------------------------------------------------------------------*/
+
+#else /* #ifndef MAIN */
+
+static const char *cline_filename = DEFAULT_LOGFILE;
+static tally_t cline_reset = TALLY_HI; /* Default is `interrogate only' */
+static int cline_quiet = 0;
+
+/*
+ * Not going to link with pamlib just for these.. :)
+ */
+
+static const char *
+pam_errors( int i )
+{
+ switch (i) {
+ case PAM_AUTH_ERR: return _("Authentication error");
+ case PAM_SERVICE_ERR: return _("Service error");
+ case PAM_USER_UNKNOWN: return _("Unknown user");
+ default: return _("Unknown error");
+ }
+}
+
+static int
+getopts( char **argv )
+{
+ const char *pname = *argv;
+ for ( ; *argv ; (void)(*argv && ++argv) ) {
+ const char *str;
+ if ( !strcmp (*argv,"--file") ) cline_filename=*++argv;
+ else if ( !strcmp(*argv,"-f") ) cline_filename=*++argv;
+ else if ((str = pam_str_skip_prefix(*argv, "--file=")) != NULL)
+ cline_filename = str;
+ else if ( !strcmp (*argv,"--user") ) cline_user=*++argv;
+ else if ( !strcmp (*argv,"-u") ) cline_user=*++argv;
+ else if ((str = pam_str_skip_prefix(*argv, "--user=")) != NULL)
+ cline_user = str;
+ else if ( !strcmp (*argv,"--reset") ) cline_reset=0;
+ else if ( !strcmp (*argv,"-r") ) cline_reset=0;
+ else if ((str = pam_str_skip_prefix(*argv, "--reset=")) != NULL) {
+ if (sscanf(str, "%hu", &cline_reset) != 1)
+ fprintf(stderr,_("%s: Bad number given to --reset=\n"),pname), exit(0);
+ }
+ else if ( !strcmp (*argv,"--quiet") ) cline_quiet=1;
+ else {
+ fprintf(stderr,_("%s: Unrecognised option %s\n"),pname,*argv);
+ return FALSE;
+ }
+ }
+ return TRUE;
+}
+
+static void
+print_one(const struct tallylog *tally, uid_t uid)
+{
+ static int once;
+ const char *cp = "[UNKNOWN]";
+ time_t fail_time;
+ struct tm *tm;
+ struct passwd *pwent;
+ const char *username = "[NONAME]";
+ char ptime[80];
+
+ pwent = getpwuid(uid);
+ fail_time = tally->fail_time;
+ if ((tm = localtime(&fail_time)) != NULL) {
+ strftime (ptime, sizeof (ptime), "%D %H:%M:%S", tm);
+ cp = ptime;
+ }
+ if (pwent) {
+ username = pwent->pw_name;
+ }
+ if (!once) {
+ printf (_("Login Failures Latest failure From\n"));
+ once++;
+ }
+ printf ("%-15.15s %5hu ", username, tally->fail_cnt);
+ if (tally->fail_time) {
+ printf ("%-17.17s %s", cp, tally->fail_line);
+ }
+ putchar ('\n');
+}
+
+int
+main( int argc UNUSED, char **argv )
+{
+ struct tallylog tally;
+
+ if ( ! getopts( argv+1 ) ) {
+ printf(_("%s: [-f rooted-filename] [--file rooted-filename]\n"
+ " [-u username] [--user username]\n"
+ " [-r] [--reset[=n]] [--quiet]\n"),
+ *argv);
+ exit(2);
+ }
+
+ umask(077);
+
+ /*
+ * Major difference between individual user and all users:
+ * --user just handles one user, just like PAM.
+ * without --user it handles all users, sniffing cline_filename for nonzeros
+ */
+
+ if ( cline_user ) {
+ uid_t uid;
+ int tfile = -1;
+ struct tally_options opts;
+ int i;
+
+ memset(&opts, 0, sizeof(opts));
+ opts.ctrl = OPT_AUDIT;
+ i=pam_get_uid(NULL, &uid, NULL, &opts);
+ if ( i != PAM_SUCCESS ) {
+ fprintf(stderr,"%s: %s\n",*argv,pam_errors(i));
+ exit(1);
+ }
+
+ if (cline_reset == 0) {
+ struct stat st;
+
+ if (stat(cline_filename, &st) && errno == ENOENT) {
+ if (!cline_quiet) {
+ memset(&tally, 0, sizeof(tally));
+ print_one(&tally, uid);
+ }
+ return 0; /* no file => nothing to reset */
+ }
+ }
+
+ i=get_tally(NULL, uid, cline_filename, &tfile, &tally, 0);
+ if ( i != PAM_SUCCESS ) {
+ if (tfile != -1)
+ close(tfile);
+ fprintf(stderr, "%s: %s\n", *argv, pam_errors(i));
+ exit(1);
+ }
+
+ if ( !cline_quiet )
+ print_one(&tally, uid);
+
+ if (cline_reset != TALLY_HI) {
+#ifdef HAVE_LIBAUDIT
+ char buf[64];
+ int audit_fd = audit_open();
+ snprintf(buf, sizeof(buf), "pam_tally2 uid=%u reset=%hu", uid, cline_reset);
+ audit_log_user_message(audit_fd, AUDIT_USER_ACCT,
+ buf, NULL, NULL, ttyname(STDIN_FILENO), 1);
+ if (audit_fd >=0)
+ close(audit_fd);
+#endif
+ if (cline_reset == 0) {
+ memset(&tally, 0, sizeof(tally));
+ } else {
+ tally.fail_cnt = cline_reset;
+ }
+ i=set_tally(NULL, uid, cline_filename, &tfile, &tally);
+ close(tfile);
+ if (i != PAM_SUCCESS) {
+ fprintf(stderr,"%s: %s\n",*argv,pam_errors(i));
+ exit(1);
+ }
+ } else {
+ close(tfile);
+ }
+ }
+ else /* !cline_user (ie, operate on all users) */ {
+ FILE *tfile=fopen(cline_filename, "r");
+ uid_t uid=0;
+ if (!tfile && cline_reset != 0) {
+ perror(*argv);
+ exit(1);
+ }
+
+ for ( ; tfile && !feof(tfile); uid++ ) {
+ if ( !fread(&tally, sizeof(tally), 1, tfile)
+ || !tally.fail_cnt ) {
+ continue;
+ }
+ print_one(&tally, uid);
+ }
+ if (tfile)
+ fclose(tfile);
+ if ( cline_reset!=0 && cline_reset!=TALLY_HI ) {
+ fprintf(stderr,_("%s: Can't reset all users to non-zero\n"),*argv);
+ }
+ else if ( !cline_reset ) {
+#ifdef HAVE_LIBAUDIT
+ char buf[64];
+ int audit_fd = audit_open();
+ snprintf(buf, sizeof(buf), "pam_tally2 uid=all reset=0");
+ audit_log_user_message(audit_fd, AUDIT_USER_ACCT,
+ buf, NULL, NULL, ttyname(STDIN_FILENO), 1);
+ if (audit_fd >=0)
+ close(audit_fd);
+#endif
+ tfile=fopen(cline_filename, "w");
+ if ( !tfile ) perror(*argv), exit(0);
+ fclose(tfile);
+ }
+ }
+ return 0;
+}
+
+
+#endif /* #ifndef MAIN */
diff --git a/modules/pam_tally2/pam_tally2_app.c b/modules/pam_tally2/pam_tally2_app.c
new file mode 100644
index 0000000..b72e9bf
--- /dev/null
+++ b/modules/pam_tally2/pam_tally2_app.c
@@ -0,0 +1,6 @@
+/*
+ # This seemed like such a good idea at the time. :)
+ */
+
+#define MAIN
+#include "pam_tally2.c"
diff --git a/modules/pam_tally2/tallylog.h b/modules/pam_tally2/tallylog.h
new file mode 100644
index 0000000..596b1da
--- /dev/null
+++ b/modules/pam_tally2/tallylog.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2006, Red Hat, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Red Hat, Inc. nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY RED HAT, INC. AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * tallylog.h - login failure data file format
+ *
+ * The new login failure file is not compatible with the old faillog(8) format
+ * Each record in the file represents a separate UID and the file
+ * is indexed in that fashion.
+ */
+
+
+#ifndef _TALLYLOG_H
+#define _TALLYLOG_H
+
+#include <stdint.h>
+
+struct tallylog {
+ char fail_line[52]; /* rhost or tty of last failure */
+ uint16_t reserved; /* reserved for future use */
+ uint16_t fail_cnt; /* failures since last success */
+ uint64_t fail_time; /* time of last failure */
+};
+/* 64 bytes / entry */
+
+#endif
diff --git a/modules/pam_tally2/tst-pam_tally2 b/modules/pam_tally2/tst-pam_tally2
new file mode 100755
index 0000000..83c71f4
--- /dev/null
+++ b/modules/pam_tally2/tst-pam_tally2
@@ -0,0 +1,2 @@
+#!/bin/sh
+../../tests/tst-dlopen .libs/pam_tally2.so
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