Adding upstream version 1.4.0.upstream/1.4.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

8 files changed, 3332 insertions, 0 deletions

diff --git a/modules/pam_cracklib/Makefile.am b/modules/pam_cracklib/Makefile.am
new file mode 100644
index 0000000..e11c42d
--- /dev/null
+++ b/modules/pam_cracklib/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_cracklib.8
+endif
+XMLS = README.xml pam_cracklib.8.xml
+dist_check_SCRIPTS = tst-pam_cracklib
+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
+pam_cracklib_la_LIBADD = $(top_builddir)/libpam/libpam.la \
+	@LIBCRACK@ @LIBCRYPT@
+securelib_LTLIBRARIES = pam_cracklib.la
+
+if ENABLE_REGENERATE_MAN
+dist_noinst_DATA = README
+-include $(top_srcdir)/Make.xml.rules
+endif
diff --git a/modules/pam_cracklib/Makefile.in b/modules/pam_cracklib/Makefile.in
new file mode 100644
index 0000000..9cd1afc
--- /dev/null
+++ b/modules/pam_cracklib/Makefile.in
@@ -0,0 +1,1148 @@
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+EXTRA_DIST = $(XMLS)
+@HAVE_DOC_TRUE@dist_man_MANS = pam_cracklib.8
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+pam_cracklib_la_LIBADD = $(top_builddir)/libpam/libpam.la \
+	@LIBCRACK@ @LIBCRYPT@
+
+securelib_LTLIBRARIES = pam_cracklib.la
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+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
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+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu modules/pam_cracklib/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu modules/pam_cracklib/Makefile
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+	  *config.status*) \
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+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
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+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure:  $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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+install-securelibLTLIBRARIES: $(securelib_LTLIBRARIES)
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+	@list='$(securelib_LTLIBRARIES)'; test -n "$(securelibdir)" || list=; \
+	list2=; for p in $$list; do \
+	  if test -f $$p; then \
+	    list2="$$list2 $$p"; \
+	  else :; fi; \
+	done; \
+	test -z "$$list2" || { \
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+	  $(MKDIR_P) "$(DESTDIR)$(securelibdir)" || exit 1; \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 '$(DESTDIR)$(securelibdir)'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 "$(DESTDIR)$(securelibdir)"; \
+	}
+
+uninstall-securelibLTLIBRARIES:
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+	@list='$(securelib_LTLIBRARIES)'; test -n "$(securelibdir)" || list=; \
+	for p in $$list; do \
+	  $(am__strip_dir) \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f '$(DESTDIR)$(securelibdir)/$$f'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f "$(DESTDIR)$(securelibdir)/$$f"; \
+	done
+
+clean-securelibLTLIBRARIES:
+	-test -z "$(securelib_LTLIBRARIES)" || rm -f $(securelib_LTLIBRARIES)
+	@list='$(securelib_LTLIBRARIES)'; \
+	locs=`for p in $$list; do echo $$p; done | \
+	      sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
+	      sort -u`; \
+	test -z "$$locs" || { \
+	  echo rm -f $${locs}; \
+	  rm -f $${locs}; \
+	}
+
+pam_cracklib.la: $(pam_cracklib_la_OBJECTS) $(pam_cracklib_la_DEPENDENCIES) $(EXTRA_pam_cracklib_la_DEPENDENCIES) 
+	$(AM_V_CCLD)$(LINK) -rpath $(securelibdir) $(pam_cracklib_la_OBJECTS) $(pam_cracklib_la_LIBADD) $(LIBS)
+
+mostlyclean-compile:
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+
+distclean-compile:
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+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/pam_cracklib.Plo@am__quote@ # am--include-marker
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+
+distclean-tags:
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+
+# Recover from deleted '.trs' file; this should ensure that
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+.log.trs:
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+	echo "$${col}Testsuite summary for $(PACKAGE_STRING)$${std}";	\
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+	if $$success; then :; else					\
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+	    test -f "$(distdir)/$$file" \
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+maintainer-clean-generic:
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+clean-am: clean-generic clean-libtool clean-securelibLTLIBRARIES \
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+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/modules/pam_cracklib/README b/modules/pam_cracklib/README
new file mode 100644
index 0000000..d074516
--- /dev/null
+++ b/modules/pam_cracklib/README
@@ -0,0 +1,254 @@
+pam_cracklib — PAM module to check the password against dictionary words
+
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+
+DESCRIPTION
+
+This module can be plugged into the password stack of a given application to
+provide some plug-in strength-checking for passwords.
+
+The action of this module is to prompt the user for a password and check its
+strength against a system dictionary and a set of rules for identifying poor
+choices.
+
+The first action is to prompt for a single password, check its strength and
+then, if it is considered strong, prompt for the password a second time (to
+verify that it was typed correctly on the first occasion). All being well, the
+password is passed on to subsequent modules to be installed as the new
+authentication token.
+
+The strength checks works in the following manner: at first the Cracklib
+routine is called to check if the password is part of a dictionary; if this is
+not the case an additional set of strength checks is done. These checks are:
+
+Palindrome
+
+    Is the new password a palindrome?
+
+Case Change Only
+
+    Is the new password the old one with only a change of case?
+
+Similar
+
+    Is the new password too much like the old one? This is primarily controlled
+    by one argument, difok which is a number of character changes (inserts,
+    removals, or replacements) between the old and new password that are enough
+    to accept the new password. This defaults to 5 changes.
+
+Simple
+
+    Is the new password too small? This is controlled by 6 arguments minlen,
+    maxclassrepeat, dcredit, ucredit, lcredit, and ocredit. See the section on
+    the arguments for the details of how these work and there defaults.
+
+Rotated
+
+    Is the new password a rotated version of the old password?
+
+Same consecutive characters
+
+    Optional check for same consecutive characters.
+
+Too long monotonic character sequence
+
+    Optional check for too long monotonic character sequence.
+
+Contains user name
+
+    Optional check whether the password contains the user's name in some form.
+
+This module with no arguments will work well for standard unix password
+encryption. With md5 encryption, passwords can be longer than 8 characters and
+the default settings for this module can make it hard for the user to choose a
+satisfactory new password. Notably, the requirement that the new password
+contain no more than 1/2 of the characters in the old password becomes a
+non-trivial constraint. For example, an old password of the form "the quick
+brown fox jumped over the lazy dogs" would be difficult to change... In
+addition, the default action is to allow passwords as small as 5 characters in
+length. For a md5 systems it can be a good idea to increase the required
+minimum size of a password. One can then allow more credit for different kinds
+of characters but accept that the new password may share most of these
+characters with the old password.
+
+OPTIONS
+
+debug
+
+    This option makes the module write information to syslog(3) indicating the
+    behavior of the module (this option does not write password information to
+    the log file).
+
+authtok_type=XXX
+
+    The default action is for the module to use the following prompts when
+    requesting passwords: "New UNIX password: " and "Retype UNIX password: ".
+    The example word UNIX can be replaced with this option, by default it is
+    empty.
+
+retry=N
+
+    Prompt user at most N times before returning with error. The default is 1.
+
+difok=N
+
+    This argument will change the default of 5 for the number of character
+    changes in the new password that differentiate it from the old password.
+
+minlen=N
+
+    The minimum acceptable size for the new password (plus one if credits are
+    not disabled which is the default). In addition to the number of characters
+    in the new password, credit (of +1 in length) is given for each different
+    kind of character (other, upper, lower and digit). The default for this
+    parameter is 9 which is good for a old style UNIX password all of the same
+    type of character but may be too low to exploit the added security of a md5
+    system. Note that there is a pair of length limits in Cracklib itself, a
+    "way too short" limit of 4 which is hard coded in and a defined limit (6)
+    that will be checked without reference to minlen. If you want to allow
+    passwords as short as 5 characters you should not use this module.
+
+dcredit=N
+
+    (N >= 0) This is the maximum credit for having digits in the new password.
+    If you have less than or N digits, each digit will count +1 towards meeting
+    the current minlen value. The default for dcredit is 1 which is the
+    recommended value for minlen less than 10.
+
+    (N < 0) This is the minimum number of digits that must be met for a new
+    password.
+
+ucredit=N
+
+    (N >= 0) This is the maximum credit for having upper case letters in the
+    new password. If you have less than or N upper case letters each letter
+    will count +1 towards meeting the current minlen value. The default for
+    ucredit is 1 which is the recommended value for minlen less than 10.
+
+    (N < 0) This is the minimum number of upper case letters that must be met
+    for a new password.
+
+lcredit=N
+
+    (N >= 0) This is the maximum credit for having lower case letters in the
+    new password. If you have less than or N lower case letters, each letter
+    will count +1 towards meeting the current minlen value. The default for
+    lcredit is 1 which is the recommended value for minlen less than 10.
+
+    (N < 0) This is the minimum number of lower case letters that must be met
+    for a new password.
+
+ocredit=N
+
+    (N >= 0) This is the maximum credit for having other characters in the new
+    password. If you have less than or N other characters, each character will
+    count +1 towards meeting the current minlen value. The default for ocredit
+    is 1 which is the recommended value for minlen less than 10.
+
+    (N < 0) This is the minimum number of other characters that must be met for
+    a new password.
+
+minclass=N
+
+    The minimum number of required classes of characters for the new password.
+    The default number is zero. The four classes are digits, upper and lower
+    letters and other characters. The difference to the credit check is that a
+    specific class if of characters is not required. Instead N out of four of
+    the classes are required.
+
+maxrepeat=N
+
+    Reject passwords which contain more than N same consecutive characters. The
+    default is 0 which means that this check is disabled.
+
+maxsequence=N
+
+    Reject passwords which contain monotonic character sequences longer than N.
+    The default is 0 which means that this check is disabled. Examples of such
+    sequence are '12345' or 'fedcb'. Note that most such passwords will not
+    pass the simplicity check unless the sequence is only a minor part of the
+    password.
+
+maxclassrepeat=N
+
+    Reject passwords which contain more than N consecutive characters of the
+    same class. The default is 0 which means that this check is disabled.
+
+reject_username
+
+    Check whether the name of the user in straight or reversed form is
+    contained in the new password. If it is found the new password is rejected.
+
+gecoscheck
+
+    Check whether the words from the GECOS field (usually full name of the
+    user) longer than 3 characters in straight or reversed form are contained
+    in the new password. If any such word is found the new password is
+    rejected.
+
+enforce_for_root
+
+    The module will return error on failed check also if the user changing the
+    password is root. This option is off by default which means that just the
+    message about the failed check is printed but root can change the password
+    anyway. Note that root is not asked for an old password so the checks that
+    compare the old and new password are not performed.
+
+use_authtok
+
+    This argument is used to force the module to not prompt the user for a new
+    password but use the one provided by the previously stacked password
+    module.
+
+dictpath=/path/to/dict
+
+    Path to the cracklib dictionaries.
+
+EXAMPLES
+
+For an example of the use of this module, we show how it may be stacked with
+the password component of pam_unix(8)
+
+#
+# These lines stack two password type modules. In this example the
+# user is given 3 opportunities to enter a strong password. The
+# "use_authtok" argument ensures that the pam_unix module does not
+# prompt for a password, but instead uses the one provided by
+# pam_cracklib.
+#
+passwd  password required       pam_cracklib.so retry=3
+passwd  password required       pam_unix.so use_authtok
+
+
+Another example (in the /etc/pam.d/passwd format) is for the case that you want
+to use md5 password encryption:
+
+#%PAM-1.0
+#
+# These lines allow a md5 systems to support passwords of at least 14
+# bytes with extra credit of 2 for digits and 2 for others the new
+# password must have at least three bytes that are not present in the
+# old password
+#
+password  required pam_cracklib.so \
+               difok=3 minlen=15 dcredit= 2 ocredit=2
+password  required pam_unix.so use_authtok nullok md5
+
+
+And here is another example in case you don't want to use credits:
+
+#%PAM-1.0
+#
+# These lines require the user to select a password with a minimum
+# length of 8 and with at least 1 digit number, 1 upper case letter,
+# and 1 other character
+#
+password  required pam_cracklib.so \
+               dcredit=-1 ucredit=-1 ocredit=-1 lcredit=0 minlen=8
+password  required pam_unix.so use_authtok nullok md5
+
+
+AUTHOR
+
+pam_cracklib was written by Cristian Gafton <gafton@redhat.com>
+
diff --git a/modules/pam_cracklib/README.xml b/modules/pam_cracklib/README.xml
new file mode 100644
index 0000000..c4a7b54
--- /dev/null
+++ b/modules/pam_cracklib/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_cracklib.8.xml">
+-->
+]>
+
+<article>
+
+  <articleinfo>
+
+    <title>
+      <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+      href="pam_cracklib.8.xml" xpointer='xpointer(//refnamediv[@id = "pam_cracklib-name"]/*)'/>
+    </title>
+
+  </articleinfo>
+
+  <section>
+    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+      href="pam_cracklib.8.xml" xpointer='xpointer(//refsect1[@id = "pam_cracklib-description"]/*)'/>
+  </section>
+
+  <section>
+    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+      href="pam_cracklib.8.xml" xpointer='xpointer(//refsect1[@id = "pam_cracklib-options"]/*)'/>
+  </section>
+
+  <section>
+    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+      href="pam_cracklib.8.xml" xpointer='xpointer(//refsect1[@id = "pam_cracklib-examples"]/*)'/>
+  </section>
+
+  <section>
+    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+      href="pam_cracklib.8.xml" xpointer='xpointer(//refsect1[@id = "pam_cracklib-author"]/*)'/>
+  </section>
+
+</article>
diff --git a/modules/pam_cracklib/pam_cracklib.8 b/modules/pam_cracklib/pam_cracklib.8
new file mode 100644
index 0000000..b7a6053
--- /dev/null
+++ b/modules/pam_cracklib/pam_cracklib.8
@@ -0,0 +1,363 @@
+'\" t
+.\"     Title: pam_cracklib
+.\"    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_CRACKLIB" "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_cracklib \- PAM module to check the password against dictionary words
+.SH "SYNOPSIS"
+.HP \w'\fBpam_cracklib\&.so\fR\ 'u
+\fBpam_cracklib\&.so\fR [\fI\&.\&.\&.\fR]
+.SH "DESCRIPTION"
+.PP
+This module can be plugged into the
+\fIpassword\fR
+stack of a given application to provide some plug\-in strength\-checking for passwords\&.
+.PP
+The action of this module is to prompt the user for a password and check its strength against a system dictionary and a set of rules for identifying poor choices\&.
+.PP
+The first action is to prompt for a single password, check its strength and then, if it is considered strong, prompt for the password a second time (to verify that it was typed correctly on the first occasion)\&. All being well, the password is passed on to subsequent modules to be installed as the new authentication token\&.
+.PP
+The strength checks works in the following manner: at first the
+\fBCracklib\fR
+routine is called to check if the password is part of a dictionary; if this is not the case an additional set of strength checks is done\&. These checks are:
+.PP
+Palindrome
+.RS 4
+Is the new password a palindrome?
+.RE
+.PP
+Case Change Only
+.RS 4
+Is the new password the old one with only a change of case?
+.RE
+.PP
+Similar
+.RS 4
+Is the new password too much like the old one? This is primarily controlled by one argument,
+\fBdifok\fR
+which is a number of character changes (inserts, removals, or replacements) between the old and new password that are enough to accept the new password\&. This defaults to 5 changes\&.
+.RE
+.PP
+Simple
+.RS 4
+Is the new password too small? This is controlled by 6 arguments
+\fBminlen\fR,
+\fBmaxclassrepeat\fR,
+\fBdcredit\fR,
+\fBucredit\fR,
+\fBlcredit\fR, and
+\fBocredit\fR\&. See the section on the arguments for the details of how these work and there defaults\&.
+.RE
+.PP
+Rotated
+.RS 4
+Is the new password a rotated version of the old password?
+.RE
+.PP
+Same consecutive characters
+.RS 4
+Optional check for same consecutive characters\&.
+.RE
+.PP
+Too long monotonic character sequence
+.RS 4
+Optional check for too long monotonic character sequence\&.
+.RE
+.PP
+Contains user name
+.RS 4
+Optional check whether the password contains the user\*(Aqs name in some form\&.
+.RE
+.PP
+This module with no arguments will work well for standard unix password encryption\&. With md5 encryption, passwords can be longer than 8 characters and the default settings for this module can make it hard for the user to choose a satisfactory new password\&. Notably, the requirement that the new password contain no more than 1/2 of the characters in the old password becomes a non\-trivial constraint\&. For example, an old password of the form "the quick brown fox jumped over the lazy dogs" would be difficult to change\&.\&.\&. In addition, the default action is to allow passwords as small as 5 characters in length\&. For a md5 systems it can be a good idea to increase the required minimum size of a password\&. One can then allow more credit for different kinds of characters but accept that the new password may share most of these characters with the old password\&.
+.SH "OPTIONS"
+.PP
+.PP
+\fBdebug\fR
+.RS 4
+This option makes the module write information to
+\fBsyslog\fR(3)
+indicating the behavior of the module (this option does not write password information to the log file)\&.
+.RE
+.PP
+\fBauthtok_type=\fR\fB\fIXXX\fR\fR
+.RS 4
+The default action is for the module to use the following prompts when requesting passwords: "New UNIX password: " and "Retype UNIX password: "\&. The example word
+\fIUNIX\fR
+can be replaced with this option, by default it is empty\&.
+.RE
+.PP
+\fBretry=\fR\fB\fIN\fR\fR
+.RS 4
+Prompt user at most
+\fIN\fR
+times before returning with error\&. The default is
+\fI1\fR\&.
+.RE
+.PP
+\fBdifok=\fR\fB\fIN\fR\fR
+.RS 4
+This argument will change the default of
+\fI5\fR
+for the number of character changes in the new password that differentiate it from the old password\&.
+.RE
+.PP
+\fBminlen=\fR\fB\fIN\fR\fR
+.RS 4
+The minimum acceptable size for the new password (plus one if credits are not disabled which is the default)\&. In addition to the number of characters in the new password, credit (of +1 in length) is given for each different kind of character (\fIother\fR,
+\fIupper\fR,
+\fIlower\fR
+and
+\fIdigit\fR)\&. The default for this parameter is
+\fI9\fR
+which is good for a old style UNIX password all of the same type of character but may be too low to exploit the added security of a md5 system\&. Note that there is a pair of length limits in
+\fICracklib\fR
+itself, a "way too short" limit of 4 which is hard coded in and a defined limit (6) that will be checked without reference to
+\fBminlen\fR\&. If you want to allow passwords as short as 5 characters you should not use this module\&.
+.RE
+.PP
+\fBdcredit=\fR\fB\fIN\fR\fR
+.RS 4
+(N >= 0) This is the maximum credit for having digits in the new password\&. If you have less than or
+\fIN\fR
+digits, each digit will count +1 towards meeting the current
+\fBminlen\fR
+value\&. The default for
+\fBdcredit\fR
+is 1 which is the recommended value for
+\fBminlen\fR
+less than 10\&.
+.sp
+(N < 0) This is the minimum number of digits that must be met for a new password\&.
+.RE
+.PP
+\fBucredit=\fR\fB\fIN\fR\fR
+.RS 4
+(N >= 0) This is the maximum credit for having upper case letters in the new password\&. If you have less than or
+\fIN\fR
+upper case letters each letter will count +1 towards meeting the current
+\fBminlen\fR
+value\&. The default for
+\fBucredit\fR
+is
+\fI1\fR
+which is the recommended value for
+\fBminlen\fR
+less than 10\&.
+.sp
+(N < 0) This is the minimum number of upper case letters that must be met for a new password\&.
+.RE
+.PP
+\fBlcredit=\fR\fB\fIN\fR\fR
+.RS 4
+(N >= 0) This is the maximum credit for having lower case letters in the new password\&. If you have less than or
+\fIN\fR
+lower case letters, each letter will count +1 towards meeting the current
+\fBminlen\fR
+value\&. The default for
+\fBlcredit\fR
+is 1 which is the recommended value for
+\fBminlen\fR
+less than 10\&.
+.sp
+(N < 0) This is the minimum number of lower case letters that must be met for a new password\&.
+.RE
+.PP
+\fBocredit=\fR\fB\fIN\fR\fR
+.RS 4
+(N >= 0) This is the maximum credit for having other characters in the new password\&. If you have less than or
+\fIN\fR
+other characters, each character will count +1 towards meeting the current
+\fBminlen\fR
+value\&. The default for
+\fBocredit\fR
+is 1 which is the recommended value for
+\fBminlen\fR
+less than 10\&.
+.sp
+(N < 0) This is the minimum number of other characters that must be met for a new password\&.
+.RE
+.PP
+\fBminclass=\fR\fB\fIN\fR\fR
+.RS 4
+The minimum number of required classes of characters for the new password\&. The default number is zero\&. The four classes are digits, upper and lower letters and other characters\&. The difference to the
+\fBcredit\fR
+check is that a specific class if of characters is not required\&. Instead
+\fIN\fR
+out of four of the classes are required\&.
+.RE
+.PP
+\fBmaxrepeat=\fR\fB\fIN\fR\fR
+.RS 4
+Reject passwords which contain more than N same consecutive characters\&. The default is 0 which means that this check is disabled\&.
+.RE
+.PP
+\fBmaxsequence=\fR\fB\fIN\fR\fR
+.RS 4
+Reject passwords which contain monotonic character sequences longer than N\&. The default is 0 which means that this check is disabled\&. Examples of such sequence are \*(Aq12345\*(Aq or \*(Aqfedcb\*(Aq\&. Note that most such passwords will not pass the simplicity check unless the sequence is only a minor part of the password\&.
+.RE
+.PP
+\fBmaxclassrepeat=\fR\fB\fIN\fR\fR
+.RS 4
+Reject passwords which contain more than N consecutive characters of the same class\&. The default is 0 which means that this check is disabled\&.
+.RE
+.PP
+\fBreject_username\fR
+.RS 4
+Check whether the name of the user in straight or reversed form is contained in the new password\&. If it is found the new password is rejected\&.
+.RE
+.PP
+\fBgecoscheck\fR
+.RS 4
+Check whether the words from the GECOS field (usually full name of the user) longer than 3 characters in straight or reversed form are contained in the new password\&. If any such word is found the new password is rejected\&.
+.RE
+.PP
+\fBenforce_for_root\fR
+.RS 4
+The module will return error on failed check also if the user changing the password is root\&. This option is off by default which means that just the message about the failed check is printed but root can change the password anyway\&. Note that root is not asked for an old password so the checks that compare the old and new password are not performed\&.
+.RE
+.PP
+\fBuse_authtok\fR
+.RS 4
+This argument is used to
+\fIforce\fR
+the module to not prompt the user for a new password but use the one provided by the previously stacked
+\fIpassword\fR
+module\&.
+.RE
+.PP
+\fBdictpath=\fR\fB\fI/path/to/dict\fR\fR
+.RS 4
+Path to the cracklib dictionaries\&.
+.RE
+.SH "MODULE TYPES PROVIDED"
+.PP
+Only the
+\fBpassword\fR
+module type is provided\&.
+.SH "RETURN VALUES"
+.PP
+.PP
+PAM_SUCCESS
+.RS 4
+The new password passes all checks\&.
+.RE
+.PP
+PAM_AUTHTOK_ERR
+.RS 4
+No new password was entered, the username could not be determined or the new password fails the strength checks\&.
+.RE
+.PP
+PAM_AUTHTOK_RECOVERY_ERR
+.RS 4
+The old password was not supplied by a previous stacked module or got not requested from the user\&. The first error can happen if
+\fBuse_authtok\fR
+is specified\&.
+.RE
+.PP
+PAM_SERVICE_ERR
+.RS 4
+A internal error occurred\&.
+.RE
+.SH "EXAMPLES"
+.PP
+For an example of the use of this module, we show how it may be stacked with the password component of
+\fBpam_unix\fR(8)
+.sp
+.if n \{\
+.RS 4
+.\}
+.nf
+#
+# These lines stack two password type modules\&. In this example the
+# user is given 3 opportunities to enter a strong password\&. The
+# "use_authtok" argument ensures that the pam_unix module does not
+# prompt for a password, but instead uses the one provided by
+# pam_cracklib\&.
+#
+passwd  password required       pam_cracklib\&.so retry=3
+passwd  password required       pam_unix\&.so use_authtok
+      
+.fi
+.if n \{\
+.RE
+.\}
+.PP
+Another example (in the
+/etc/pam\&.d/passwd
+format) is for the case that you want to use md5 password encryption:
+.sp
+.if n \{\
+.RS 4
+.\}
+.nf
+#%PAM\-1\&.0
+#
+# These lines allow a md5 systems to support passwords of at least 14
+# bytes with extra credit of 2 for digits and 2 for others the new
+# password must have at least three bytes that are not present in the
+# old password
+#
+password  required pam_cracklib\&.so \e
+               difok=3 minlen=15 dcredit= 2 ocredit=2
+password  required pam_unix\&.so use_authtok nullok md5
+      
+.fi
+.if n \{\
+.RE
+.\}
+.PP
+And here is another example in case you don\*(Aqt want to use credits:
+.sp
+.if n \{\
+.RS 4
+.\}
+.nf
+#%PAM\-1\&.0
+#
+# These lines require the user to select a password with a minimum
+# length of 8 and with at least 1 digit number, 1 upper case letter,
+# and 1 other character
+#
+password  required pam_cracklib\&.so \e
+               dcredit=\-1 ucredit=\-1 ocredit=\-1 lcredit=0 minlen=8
+password  required pam_unix\&.so use_authtok nullok md5
+      
+.fi
+.if n \{\
+.RE
+.\}
+.sp
+.SH "SEE ALSO"
+.PP
+\fBpam.conf\fR(5),
+\fBpam.d\fR(5),
+\fBpam\fR(8)
+.SH "AUTHOR"
+.PP
+pam_cracklib was written by Cristian Gafton <gafton@redhat\&.com>
diff --git a/modules/pam_cracklib/pam_cracklib.8.xml b/modules/pam_cracklib/pam_cracklib.8.xml
new file mode 100644
index 0000000..75e44e2
--- /dev/null
+++ b/modules/pam_cracklib/pam_cracklib.8.xml
@@ -0,0 +1,592 @@
+<?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_cracklib">
+
+  <refmeta>
+    <refentrytitle>pam_cracklib</refentrytitle>
+    <manvolnum>8</manvolnum>
+    <refmiscinfo class="sectdesc">Linux-PAM Manual</refmiscinfo>
+  </refmeta>
+
+  <refnamediv id="pam_cracklib-name">
+    <refname>pam_cracklib</refname>
+    <refpurpose>PAM module to check the password against dictionary words</refpurpose>
+  </refnamediv>
+
+  <refsynopsisdiv>
+    <cmdsynopsis id="pam_cracklib-cmdsynopsis">
+      <command>pam_cracklib.so</command>
+      <arg choice="opt">
+        <replaceable>...</replaceable>
+      </arg>
+    </cmdsynopsis>
+  </refsynopsisdiv>
+
+  <refsect1 id="pam_cracklib-description">
+
+    <title>DESCRIPTION</title>
+
+    <para>
+      This module can be plugged into the <emphasis>password</emphasis> stack of
+      a given application to provide some plug-in strength-checking for passwords.
+    </para>
+
+    <para>
+      The action of this module is to prompt the user for a password and
+      check its strength against a system dictionary and a set of rules for
+      identifying poor choices.
+    </para>
+
+    <para>
+      The first action is to prompt for a single password, check its
+      strength and then, if it is considered strong, prompt for the password
+      a second time (to verify that it was typed correctly on the first
+      occasion). All being well, the password is passed on to subsequent
+      modules to be installed as the new authentication token.
+    </para>
+
+    <para>
+      The strength checks works in the following manner: at first the
+      <function>Cracklib</function> routine is called to check if the password
+      is part of a dictionary; if this is not the case an additional set of
+      strength checks is done. These checks are:
+    </para>
+
+    <variablelist>
+      <varlistentry>
+        <term>Palindrome</term>
+        <listitem>
+          <para>
+            Is the new password a palindrome?
+          </para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term>Case Change Only</term>
+        <listitem>
+          <para>
+            Is the new password the old one with  only a change of case?
+          </para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term>Similar</term>
+        <listitem>
+          <para>
+            Is the new password too much like the old one?
+            This is primarily controlled by one argument,
+            <option>difok</option> which is a number of character changes
+            (inserts, removals, or replacements) between the old and new
+            password that are enough to accept the new password.
+            This defaults to 5 changes.
+          </para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term>Simple</term>
+        <listitem>
+          <para>
+             Is the new password too small?
+             This is controlled by 6 arguments <option>minlen</option>,
+             <option>maxclassrepeat</option>,
+             <option>dcredit</option>, <option>ucredit</option>,
+             <option>lcredit</option>, and <option>ocredit</option>. See the section
+             on the arguments for the details of how these work and there defaults.
+           </para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term>Rotated</term>
+        <listitem>
+          <para>
+            Is the new password a rotated version of the old password?
+          </para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term>Same consecutive characters</term>
+        <listitem>
+          <para>
+            Optional check for same consecutive characters.
+          </para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term>Too long monotonic character sequence</term>
+        <listitem>
+          <para>
+            Optional check for too long monotonic character sequence.
+          </para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term>Contains user name</term>
+        <listitem>
+          <para>
+            Optional check whether the password contains the user's name
+            in some form.
+          </para>
+        </listitem>
+      </varlistentry>
+    </variablelist>
+    <para>
+      This module with no arguments will work well for standard unix
+      password encryption.  With md5 encryption, passwords can be longer
+      than 8 characters and the default settings for this module can make it
+      hard for the user to choose a satisfactory new password.  Notably, the
+      requirement that the new password contain no more than 1/2 of the
+      characters in the old password becomes a non-trivial constraint.  For
+      example, an old password of the form "the quick brown fox jumped over
+      the lazy dogs" would be difficult to change...  In addition, the
+      default action is to allow passwords as small as 5 characters in
+      length.  For a md5 systems it can be a good idea to increase the
+      required minimum size of a password.  One can then allow more credit
+      for different kinds of characters but accept that the new password may
+      share most of these characters with the old password.
+    </para>
+
+  </refsect1>
+
+  <refsect1 id="pam_cracklib-options">
+
+    <title>OPTIONS</title>
+    <para>
+      <variablelist>
+
+        <varlistentry>
+          <term>
+            <option>debug</option>
+          </term>
+          <listitem>
+            <para>
+              This option makes the module write information to
+              <citerefentry>
+                <refentrytitle>syslog</refentrytitle><manvolnum>3</manvolnum>
+              </citerefentry>
+              indicating the behavior of the module (this option does
+              not write password information to the log file).
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>
+            <option>authtok_type=<replaceable>XXX</replaceable></option>
+          </term>
+          <listitem>
+            <para>
+              The default action is for the module to use the
+              following prompts when requesting passwords:
+              "New UNIX password: " and "Retype UNIX password: ".
+              The example word <emphasis>UNIX</emphasis> can
+              be replaced with this option, by default it is empty.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>
+            <option>retry=<replaceable>N</replaceable></option>
+          </term>
+          <listitem>
+            <para>
+              Prompt user at most <replaceable>N</replaceable> times
+              before returning with error. The default is
+              <emphasis>1</emphasis>.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>
+            <option>difok=<replaceable>N</replaceable></option>
+          </term>
+          <listitem>
+            <para>
+              This argument will change the default of
+              <emphasis>5</emphasis> for the number of character
+              changes in the new password that differentiate it
+              from the old password.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>
+            <option>minlen=<replaceable>N</replaceable></option>
+          </term>
+          <listitem>
+            <para>
+              The minimum acceptable size for the new password (plus
+              one if credits are not disabled which is the default).
+              In addition to the number of characters in the new password,
+              credit (of +1 in length) is given for each different kind
+              of character (<emphasis>other</emphasis>,
+              <emphasis>upper</emphasis>, <emphasis>lower</emphasis> and
+              <emphasis>digit</emphasis>). The default for this parameter
+              is <emphasis>9</emphasis> which is good for a old style UNIX
+              password all of the same type of character but may be too low
+              to exploit the added security of a md5 system.  Note that
+              there is a pair of length limits in
+              <emphasis>Cracklib</emphasis> itself, a "way too short" limit
+              of 4 which is hard coded in and a defined limit (6) that will
+              be checked without reference to <option>minlen</option>.
+              If you want to allow passwords as short as 5 characters you
+              should not use this module.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>
+            <option>dcredit=<replaceable>N</replaceable></option>
+          </term>
+          <listitem>
+            <para>
+              (N &gt;= 0) This is the maximum credit for having digits in
+              the new password. If you have less than or
+              <replaceable>N</replaceable>
+              digits, each digit will count +1 towards meeting the current
+              <option>minlen</option> value. The default for
+              <option>dcredit</option> is 1 which is the recommended
+              value for <option>minlen</option> less than 10.
+            </para>
+            <para>
+              (N &lt; 0) This is the minimum number of digits that must
+              be met for a new password.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>
+            <option>ucredit=<replaceable>N</replaceable></option>
+          </term>
+          <listitem>
+            <para>
+              (N &gt;= 0) This is the maximum credit for having upper
+              case letters in the new password.  If you have less than
+              or <replaceable>N</replaceable> upper case letters each
+              letter will count +1 towards meeting the current
+              <option>minlen</option> value. The default for
+              <option>ucredit</option> is <emphasis>1</emphasis> which
+              is the recommended value for <option>minlen</option> less
+              than 10.
+            </para>
+            <para>
+              (N &lt; 0) This is the minimum number of upper
+              case letters that must be met for a new password.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>
+            <option>lcredit=<replaceable>N</replaceable></option>
+          </term>
+          <listitem>
+            <para>
+              (N &gt;= 0) This is the maximum credit for having
+              lower case letters in the new password. If you have
+              less than or <replaceable>N</replaceable> lower case
+              letters, each letter will count +1 towards meeting the
+              current <option>minlen</option> value. The default for
+              <option>lcredit</option> is 1 which is the recommended
+              value for <option>minlen</option> less than 10.
+            </para>
+            <para>
+             (N &lt; 0) This is the minimum number of lower
+             case letters that must be met for a new password.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>
+            <option>ocredit=<replaceable>N</replaceable></option>
+          </term>
+          <listitem>
+            <para>
+              (N &gt;= 0) This is the maximum credit for having other
+              characters in the new password. If you have less than or
+              <replaceable>N</replaceable> other characters, each
+              character will count +1 towards meeting the current
+              <option>minlen</option> value. The default for
+              <option>ocredit</option> is 1 which is the recommended
+              value for <option>minlen</option> less than 10.
+            </para>
+            <para>
+              (N &lt; 0) This is the minimum number of other
+              characters that must be met for a new password.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>
+            <option>minclass=<replaceable>N</replaceable></option>
+          </term>
+          <listitem>
+            <para>
+              The minimum number of required classes of characters for
+              the new password. The default number is zero. The four
+              classes are digits, upper and lower letters and other
+              characters.
+              The difference to the <option>credit</option> check is
+              that a specific class if of characters is not required.
+              Instead <replaceable>N</replaceable> out of four of the
+              classes are required.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>
+            <option>maxrepeat=<replaceable>N</replaceable></option>
+          </term>
+          <listitem>
+            <para>
+              Reject passwords which contain more than N same consecutive
+              characters. The default is 0 which means that this check
+              is disabled.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>
+            <option>maxsequence=<replaceable>N</replaceable></option>
+          </term>
+          <listitem>
+            <para>
+              Reject passwords which contain monotonic character sequences
+              longer than N. The default is 0 which means that this check
+              is disabled. Examples of such sequence are '12345' or 'fedcb'.
+              Note that most such passwords will not pass the simplicity
+              check unless the sequence is only a minor part of the password.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>
+            <option>maxclassrepeat=<replaceable>N</replaceable></option>
+          </term>
+          <listitem>
+            <para>
+              Reject passwords which contain more than N consecutive
+              characters of the same class. The default is 0 which means
+              that this check is disabled.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>
+            <option>reject_username</option>
+          </term>
+          <listitem>
+            <para>
+              Check whether the name of the user in straight or reversed
+              form is contained in the new password. If it is found the
+              new password is rejected.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>
+            <option>gecoscheck</option>
+          </term>
+          <listitem>
+            <para>
+              Check whether the words from the GECOS field (usually full name
+              of the user) longer than 3 characters in straight or reversed
+              form are contained in the new password. If any such word is
+              found the new password is rejected.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>
+            <option>enforce_for_root</option>
+          </term>
+          <listitem>
+            <para>
+              The module will return error on failed check also if the user
+              changing the password is root. This option is off by default
+              which means that just the message about the failed check is
+              printed but root can change the password anyway.
+              Note that root is not asked for an old password so the checks
+              that compare the old and new password are not performed.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>
+            <option>use_authtok</option>
+          </term>
+          <listitem>
+            <para>
+              This argument is used to <emphasis>force</emphasis> the
+              module to not prompt the user for a new password but use
+              the one provided by the previously stacked
+              <emphasis>password</emphasis> module.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>
+            <option>dictpath=<replaceable>/path/to/dict</replaceable></option>
+          </term>
+          <listitem>
+            <para>
+              Path to the cracklib dictionaries.
+            </para>
+          </listitem>
+        </varlistentry>
+
+      </variablelist>
+    </para>
+  </refsect1>
+
+  <refsect1 id="pam_cracklib-types">
+    <title>MODULE TYPES PROVIDED</title>
+    <para>
+      Only the <option>password</option> module type is provided.
+    </para>
+  </refsect1>
+
+  <refsect1 id='pam_cracklib-return_values'>
+    <title>RETURN VALUES</title>
+    <para>
+      <variablelist>
+
+        <varlistentry>
+          <term>PAM_SUCCESS</term>
+          <listitem>
+            <para>
+              The new password passes all checks.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>PAM_AUTHTOK_ERR</term>
+          <listitem>
+            <para>
+              No new password was entered,
+              the username could not be determined or the new
+              password fails the strength checks.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>PAM_AUTHTOK_RECOVERY_ERR</term>
+          <listitem>
+            <para>
+              The old password was not supplied by a previous stacked
+              module or got not requested from the user.
+              The first error can happen if <option>use_authtok</option>
+              is specified.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term>PAM_SERVICE_ERR</term>
+          <listitem>
+            <para>
+              A internal error occurred.
+            </para>
+          </listitem>
+        </varlistentry>
+
+      </variablelist>
+    </para>
+  </refsect1>
+
+  <refsect1 id='pam_cracklib-examples'>
+    <title>EXAMPLES</title>
+    <para>
+      For an example of the use of this module, we show how it may be
+      stacked with the password component of
+      <citerefentry>
+        <refentrytitle>pam_unix</refentrytitle><manvolnum>8</manvolnum>
+      </citerefentry>
+      <programlisting>
+#
+# These lines stack two password type modules. In this example the
+# user is given 3 opportunities to enter a strong password. The
+# "use_authtok" argument ensures that the pam_unix module does not
+# prompt for a password, but instead uses the one provided by
+# pam_cracklib.
+#
+passwd  password required       pam_cracklib.so retry=3
+passwd  password required       pam_unix.so use_authtok
+      </programlisting>
+    </para>
+
+    <para>
+      Another example (in the <filename>/etc/pam.d/passwd</filename> format)
+      is for the case that you want to use md5 password encryption:
+      <programlisting>
+#%PAM-1.0
+#
+# These lines allow a md5 systems to support passwords of at least 14
+# bytes with extra credit of 2 for digits and 2 for others the new
+# password must have at least three bytes that are not present in the
+# old password
+#
+password  required pam_cracklib.so \
+               difok=3 minlen=15 dcredit= 2 ocredit=2
+password  required pam_unix.so use_authtok nullok md5
+      </programlisting>
+    </para>
+
+    <para>
+      And here is another example in case you don't want to use credits:
+      <programlisting>
+#%PAM-1.0
+#
+# These lines require the user to select a password with a minimum
+# length of 8 and with at least 1 digit number, 1 upper case letter,
+# and 1 other character
+#
+password  required pam_cracklib.so \
+               dcredit=-1 ucredit=-1 ocredit=-1 lcredit=0 minlen=8
+password  required pam_unix.so use_authtok nullok md5
+      </programlisting>
+    </para>
+
+  </refsect1>
+
+  <refsect1 id='pam_cracklib-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_cracklib-author'>
+    <title>AUTHOR</title>
+      <para>
+        pam_cracklib was written by Cristian Gafton &lt;gafton@redhat.com&gt;
+      </para>
+  </refsect1>
+
+</refentry>
diff --git a/modules/pam_cracklib/pam_cracklib.c b/modules/pam_cracklib/pam_cracklib.c
new file mode 100644
index 0000000..0129130
--- /dev/null
+++ b/modules/pam_cracklib/pam_cracklib.c
@@ -0,0 +1,899 @@
+/*
+ * pam_cracklib module
+ *
+ * 0.9. switch to using a distance algorithm in similar()
+ * 0.86.  added support for setting minimum numbers of digits, uppers,
+ *        lowers, and others
+ * 0.85.  added six new options to use this with long passwords.
+ * 0.8. tidied output and improved D(()) usage for debugging.
+ * 0.7. added support for more obscure checks for new passwd.
+ * 0.6. root can reset user passwd to any values (it's only warned)
+ * 0.5. supports retries - 'retry=N' argument
+ * 0.4. added argument 'type=XXX' for 'New XXX password' prompt
+ * 0.3. Added argument 'debug'
+ * 0.2. new password is fed to cracklib for verify after typed once
+ * 0.1. First release
+ *
+ * Written by Cristian Gafton <gafton@redhat.com> 1996/09/10
+ * Long password support by Philip W. Dalrymple <pwd@mdtsoft.com> 1997/07/18
+ * See the end of the file for Copyright Information
+ *
+ * Modification for long password systems (>8 chars).  The original
+ * module had problems when used in a md5 password system in that it
+ * allowed too short passwords but required that at least half of the
+ * bytes in the new password did not appear in the old one.  this
+ * action is still the default and the changes should not break any
+ * current user. This modification adds 6 new options, one to set the
+ * number of bytes in the new password that are not in the old one,
+ * the other five to control the length checking, these are all
+ * documented (or will be before anyone else sees this code) in the PAM
+ * S.A.G. in the section on the cracklib module.
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#ifdef HAVE_LIBXCRYPT
+# include <xcrypt.h>
+#elif defined(HAVE_CRYPT_H)
+# include <crypt.h>
+#endif
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <stdarg.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <ctype.h>
+#include <limits.h>
+#include <pwd.h>
+#include <security/pam_modutil.h>
+
+#ifdef HAVE_CRACK_H
+#include <crack.h>
+#else
+extern char *FascistCheck(char *pw, const char *dictpath);
+#endif
+
+#ifndef CRACKLIB_DICTS
+#define CRACKLIB_DICTS NULL
+#endif
+
+#ifdef MIN
+#undef MIN
+#endif
+#define MIN(_a, _b) (((_a) < (_b)) ? (_a) : (_b))
+
+#include <security/pam_modules.h>
+#include <security/_pam_macros.h>
+#include <security/pam_ext.h>
+#include "pam_inline.h"
+
+/* argument parsing */
+#define PAM_DEBUG_ARG       0x0001
+
+struct cracklib_options {
+	int retry_times;
+	int diff_ok;
+	int min_length;
+	int dig_credit;
+	int up_credit;
+	int low_credit;
+	int oth_credit;
+        int min_class;
+	int max_repeat;
+	int max_sequence;
+        int max_class_repeat;
+	int reject_user;
+        int gecos_check;
+        int enforce_for_root;
+        const char *cracklib_dictpath;
+};
+
+#define CO_RETRY_TIMES  1
+#define CO_DIFF_OK      5
+#define CO_MIN_LENGTH   9
+# define CO_MIN_LENGTH_BASE 5
+#define CO_DIG_CREDIT   1
+#define CO_UP_CREDIT    1
+#define CO_LOW_CREDIT   1
+#define CO_OTH_CREDIT   1
+#define CO_MIN_WORD_LENGTH 4
+
+static int
+_pam_parse (pam_handle_t *pamh, struct cracklib_options *opt,
+            int argc, const char **argv)
+{
+     int ctrl=0;
+
+     /* step through arguments */
+     for (ctrl=0; argc-- > 0; ++argv) {
+	 const char *str;
+	 char *ep = NULL;
+
+	 /* generic options */
+
+	 if (!strcmp(*argv,"debug"))
+	     ctrl |= PAM_DEBUG_ARG;
+	 else if ((str = pam_str_skip_prefix(*argv, "type=")) != NULL)
+	     pam_set_item (pamh, PAM_AUTHTOK_TYPE, str);
+	 else if ((str = pam_str_skip_prefix(*argv, "retry=")) != NULL) {
+	     opt->retry_times = strtol(str, &ep, 10);
+	     if (!ep || (opt->retry_times < 1))
+		 opt->retry_times = CO_RETRY_TIMES;
+	 } else if ((str = pam_str_skip_prefix(*argv, "difok=")) != NULL) {
+	     opt->diff_ok = strtol(str, &ep, 10);
+	     if (!ep || (opt->diff_ok < 0))
+		 opt->diff_ok = CO_DIFF_OK;
+	 } else if (pam_str_skip_prefix(*argv, "difignore=") != NULL) {
+		/* just ignore */
+	 } else if ((str = pam_str_skip_prefix(*argv, "minlen=")) != NULL) {
+	     opt->min_length = strtol(str, &ep, 10);
+	     if (!ep || (opt->min_length < CO_MIN_LENGTH_BASE))
+		 opt->min_length = CO_MIN_LENGTH_BASE;
+	 } else if ((str = pam_str_skip_prefix(*argv, "dcredit=")) != NULL) {
+	     opt->dig_credit = strtol(str, &ep, 10);
+	     if (!ep)
+		 opt->dig_credit = 0;
+	 } else if ((str = pam_str_skip_prefix(*argv, "ucredit=")) != NULL) {
+	     opt->up_credit = strtol(str, &ep, 10);
+	     if (!ep)
+		 opt->up_credit = 0;
+	 } else if ((str = pam_str_skip_prefix(*argv, "lcredit=")) != NULL) {
+	     opt->low_credit = strtol(str, &ep, 10);
+	     if (!ep)
+		 opt->low_credit = 0;
+	 } else if ((str = pam_str_skip_prefix(*argv, "ocredit=")) != NULL) {
+	     opt->oth_credit = strtol(str, &ep, 10);
+	     if (!ep)
+		 opt->oth_credit = 0;
+	 } else if ((str = pam_str_skip_prefix(*argv, "minclass=")) != NULL) {
+             opt->min_class = strtol(str, &ep, 10);
+             if (!ep)
+                 opt->min_class = 0;
+             if (opt->min_class > 4)
+                 opt->min_class = 4;
+	 } else if ((str = pam_str_skip_prefix(*argv, "maxrepeat=")) != NULL) {
+             opt->max_repeat = strtol(str, &ep, 10);
+             if (!ep)
+                 opt->max_repeat = 0;
+	 } else if ((str = pam_str_skip_prefix(*argv, "maxsequence=")) != NULL) {
+             opt->max_sequence = strtol(str, &ep, 10);
+             if (!ep)
+                 opt->max_sequence = 0;
+	 } else if ((str = pam_str_skip_prefix(*argv, "maxclassrepeat=")) != NULL) {
+             opt->max_class_repeat = strtol(str, &ep, 10);
+             if (!ep)
+                 opt->max_class_repeat = 0;
+	 } else if (!strcmp(*argv, "reject_username")) {
+		 opt->reject_user = 1;
+	 } else if (!strcmp(*argv, "gecoscheck")) {
+		 opt->gecos_check = 1;
+	 } else if (!strcmp(*argv, "enforce_for_root")) {
+		  opt->enforce_for_root = 1;
+	 } else if (pam_str_skip_prefix(*argv, "authtok_type=") != NULL) {
+	   /* for pam_get_authtok, ignore */;
+	 } else if (!strcmp(*argv, "use_authtok")) {
+           /* for pam_get_authtok, ignore */;
+	 } else if (!strcmp(*argv, "use_first_pass")) {
+	   /* for pam_get_authtok, ignore */;
+	 } else if (!strcmp(*argv, "try_first_pass")) {
+	   /* for pam_get_authtok, ignore */;
+	 } else if ((str = pam_str_skip_prefix(*argv, "dictpath=")) != NULL) {
+	     opt->cracklib_dictpath = str;
+	     if (!*(opt->cracklib_dictpath)) {
+		 opt->cracklib_dictpath = CRACKLIB_DICTS;
+	     }
+	 } else {
+	     pam_syslog(pamh,LOG_ERR,"pam_parse: unknown option; %s",*argv);
+	 }
+     }
+
+     return ctrl;
+}
+
+/* Helper functions */
+
+/*
+ * can't be a palindrome - like `R A D A R' or `M A D A M'
+ */
+static int palindrome(const char *new)
+{
+    int	i, j;
+
+	i = strlen (new);
+
+	for (j = 0;j < i;j++)
+		if (new[i - j - 1] != new[j])
+			return 0;
+
+	return 1;
+}
+
+/*
+ * Calculate how different two strings are in terms of the number of
+ * character removals, additions, and changes needed to go from one to
+ * the other
+ */
+
+static int distdifferent(const char *old, const char *new,
+			 size_t i, size_t j)
+{
+    char c, d;
+
+    if ((i == 0) || (strlen(old) < i)) {
+	c = 0;
+    } else {
+	c = old[i - 1];
+    }
+    if ((j == 0) || (strlen(new) < j)) {
+	d = 0;
+    } else {
+	d = new[j - 1];
+    }
+    return (c != d);
+}
+
+static int distcalculate(int **distances, const char *old, const char *new,
+			 size_t i, size_t j)
+{
+    int tmp = 0;
+
+    if (distances[i][j] != -1) {
+	return distances[i][j];
+    }
+
+    tmp =          distcalculate(distances, old, new, i - 1, j - 1);
+    tmp = MIN(tmp, distcalculate(distances, old, new,     i, j - 1));
+    tmp = MIN(tmp, distcalculate(distances, old, new, i - 1,     j));
+    tmp += distdifferent(old, new, i, j);
+
+    distances[i][j] = tmp;
+
+    return tmp;
+}
+
+static int distance(const char *old, const char *new)
+{
+    int **distances = NULL;
+    size_t m, n, i, j, r;
+
+    m = strlen(old);
+    n = strlen(new);
+    distances = malloc(sizeof(int*) * (m + 1));
+
+    for (i = 0; i <= m; i++) {
+	distances[i] = malloc(sizeof(int) * (n + 1));
+	for(j = 0; j <= n; j++) {
+	    distances[i][j] = -1;
+	}
+    }
+    for (i = 0; i <= m; i++) {
+	distances[i][0] = i;
+    }
+    for (j = 0; j <= n; j++) {
+	distances[0][j] = j;
+    }
+    distances[0][0] = 0;
+
+    r = distcalculate(distances, old, new, m, n);
+
+    for (i = 0; i <= m; i++) {
+	memset(distances[i], 0, sizeof(int) * (n + 1));
+	free(distances[i]);
+    }
+    free(distances);
+
+    return r;
+}
+
+static int similar(struct cracklib_options *opt,
+		   const char *old, const char *new)
+{
+    if (distance(old, new) >= opt->diff_ok) {
+	return 0;
+    }
+
+    if (strlen(new) >= (strlen(old) * 2)) {
+	return 0;
+    }
+
+    /* passwords are too similar */
+    return 1;
+}
+
+/*
+ * enough classes of characters
+ */
+
+static int minclass (struct cracklib_options *opt,
+		     const char *new)
+{
+    int digits = 0;
+    int uppers = 0;
+    int lowers = 0;
+    int others = 0;
+    int total_class;
+    int i;
+    int retval;
+
+    D(( "called" ));
+    for (i = 0; new[i]; i++)
+       {
+	 if (isdigit (new[i]))
+             digits = 1;
+	 else if (isupper (new[i]))
+             uppers = 1;
+	 else if (islower (new[i]))
+             lowers = 1;
+	 else
+             others = 1;
+       }
+
+    total_class = digits + uppers + lowers + others;
+
+    D (("total class: %d\tmin_class: %d", total_class, opt->min_class));
+
+    if (total_class >= opt->min_class)
+        retval = 0;
+    else
+      retval = 1;
+
+    return retval;
+}
+
+
+/*
+ * a nice mix of characters.
+ */
+static int simple(struct cracklib_options *opt, const char *new)
+{
+    int	digits = 0;
+    int	uppers = 0;
+    int	lowers = 0;
+    int	others = 0;
+    int	size;
+    int	i;
+    enum { NONE, DIGIT, UCASE, LCASE, OTHER } prevclass = NONE;
+    int sameclass = 0;
+
+    for (i = 0;new[i];i++) {
+	if (isdigit (new[i])) {
+	    digits++;
+            if (prevclass != DIGIT) {
+                prevclass = DIGIT;
+                sameclass = 1;
+            } else
+                sameclass++;
+        }
+	else if (isupper (new[i])) {
+	    uppers++;
+            if (prevclass != UCASE) {
+                prevclass = UCASE;
+                sameclass = 1;
+            } else
+                sameclass++;
+        }
+	else if (islower (new[i])) {
+	    lowers++;
+            if (prevclass != LCASE) {
+                prevclass = LCASE;
+                sameclass = 1;
+            } else
+                sameclass++;
+        }
+	else {
+	    others++;
+            if (prevclass != OTHER) {
+                prevclass = OTHER;
+                sameclass = 1;
+            } else
+                sameclass++;
+        }
+        if (opt->max_class_repeat > 0 && sameclass > opt->max_class_repeat) {
+                return 1;
+        }
+    }
+
+    /*
+     * The scam was this - a password of only one character type
+     * must be 8 letters long.  Two types, 7, and so on.
+     * This is now changed, the base size and the credits or defaults
+     * see the docs on the module for info on these parameters, the
+     * defaults cause the effect to be the same as before the change
+     */
+
+    if ((opt->dig_credit >= 0) && (digits > opt->dig_credit))
+	digits = opt->dig_credit;
+
+    if ((opt->up_credit >= 0) && (uppers > opt->up_credit))
+	uppers = opt->up_credit;
+
+    if ((opt->low_credit >= 0) && (lowers > opt->low_credit))
+	lowers = opt->low_credit;
+
+    if ((opt->oth_credit >= 0) && (others > opt->oth_credit))
+	others = opt->oth_credit;
+
+    size = opt->min_length;
+
+    if (opt->dig_credit >= 0)
+	size -= digits;
+    else if (digits < opt->dig_credit * -1)
+	return 1;
+
+    if (opt->up_credit >= 0)
+	size -= uppers;
+    else if (uppers < opt->up_credit * -1)
+	return 1;
+
+    if (opt->low_credit >= 0)
+	size -= lowers;
+    else if (lowers < opt->low_credit * -1)
+	return 1;
+
+    if (opt->oth_credit >= 0)
+	size -= others;
+    else if (others < opt->oth_credit * -1)
+	return 1;
+
+    if (size <= i)
+	return 0;
+
+    return 1;
+}
+
+static int consecutive(struct cracklib_options *opt, const char *new)
+{
+    char c;
+    int i;
+    int same;
+
+    if (opt->max_repeat == 0)
+	return 0;
+
+    for (i = 0; new[i]; i++) {
+	if (i > 0 && new[i] == c) {
+	    ++same;
+	    if (same > opt->max_repeat)
+		return 1;
+	} else {
+	    c = new[i];
+	    same = 1;
+	}
+    }
+    return 0;
+}
+
+static int sequence(struct cracklib_options *opt, const char *new)
+{
+    char c;
+    int i;
+    int sequp = 1;
+    int seqdown = 1;
+
+    if (opt->max_sequence == 0)
+	return 0;
+
+    if (new[0] == '\0')
+        return 0;
+
+    for (i = 1; new[i]; i++) {
+        c = new[i-1];
+	if (new[i] == c+1) {
+	    ++sequp;
+	    if (sequp > opt->max_sequence)
+		return 1;
+	    seqdown = 1;
+	} else if (new[i] == c-1) {
+	    ++seqdown;
+	    if (seqdown > opt->max_sequence)
+		return 1;
+	    sequp = 1;
+	} else {
+	    sequp = 1;
+            seqdown = 1;
+        }
+    }
+    return 0;
+}
+
+static int wordcheck(const char *new, char *word)
+{
+    char *f, *b;
+
+    if (strstr(new, word) != NULL)
+	return 1;
+
+    /* now reverse the word, we can do that in place
+       as it is strdup-ed */
+    f = word;
+    b = word+strlen(word)-1;
+    while (f < b) {
+	char c;
+
+	c = *f;
+	*f = *b;
+	*b = c;
+	--b;
+	++f;
+    }
+
+    if (strstr(new, word) != NULL)
+	return 1;
+    return 0;
+}
+
+static int usercheck(struct cracklib_options *opt, const char *new,
+		     char *user)
+{
+    if (!opt->reject_user)
+        return 0;
+
+    return wordcheck(new, user);
+}
+
+static char * str_lower(char *string)
+{
+	char *cp;
+
+	if (!string)
+		return NULL;
+
+	for (cp = string; *cp; cp++)
+		*cp = tolower(*cp);
+	return string;
+}
+
+static int gecoscheck(pam_handle_t *pamh, struct cracklib_options *opt, const char *new,
+		     const char *user)
+{
+    struct passwd *pwd;
+    char *list;
+    char *p;
+    char *next;
+
+    if (!opt->gecos_check)
+        return 0;
+
+    if ((pwd = pam_modutil_getpwnam(pamh, user)) == NULL) {
+        return 0;
+    }
+
+    list = strdup(pwd->pw_gecos);
+
+    if (list == NULL || *list == '\0') {
+        free(list);
+        return 0;
+    }
+
+    for (p = list;;p = next + 1) {
+         next = strchr(p, ' ');
+         if (next)
+             *next = '\0';
+
+         if (strlen(p) >= CO_MIN_WORD_LENGTH) {
+             str_lower(p);
+             if (wordcheck(new, p)) {
+                 free(list);
+                 return 1;
+             }
+         }
+
+         if (!next)
+             break;
+    }
+
+    free(list);
+    return 0;
+}
+
+static const char *password_check(pam_handle_t *pamh, struct cracklib_options *opt,
+				  const char *old, const char *new,
+				  const char *user)
+{
+	const char *msg = NULL;
+	char *oldmono = NULL, *newmono, *wrapped = NULL;
+	char *usermono = NULL;
+
+	if (old && strcmp(new, old) == 0) {
+	    msg = _("is the same as the old one");
+	    return msg;
+	}
+
+	newmono = str_lower(strdup(new));
+	if (!newmono)
+		msg = _("memory allocation error");
+
+	usermono = str_lower(strdup(user));
+	if (!usermono)
+		msg = _("memory allocation error");
+
+	if (!msg && old) {
+		oldmono = str_lower(strdup(old));
+		if (oldmono)
+			wrapped = malloc(strlen(oldmono) * 2 + 1);
+		if (wrapped) {
+			strcpy (wrapped, oldmono);
+			strcat (wrapped, oldmono);
+		} else {
+			msg = _("memory allocation error");
+		}
+	}
+
+	if (!msg && palindrome(newmono))
+		msg = _("is a palindrome");
+
+	if (!msg && oldmono && strcmp(oldmono, newmono) == 0)
+		msg = _("case changes only");
+
+	if (!msg && oldmono && similar(opt, oldmono, newmono))
+		msg = _("is too similar to the old one");
+
+	if (!msg && simple(opt, new))
+		msg = _("is too simple");
+
+	if (!msg && wrapped && strstr(wrapped, newmono))
+		msg = _("is rotated");
+
+	if (!msg && minclass (opt, new))
+	        msg = _("not enough character classes");
+
+	if (!msg && consecutive(opt, new))
+	        msg = _("contains too many same characters consecutively");
+
+	if (!msg && sequence(opt, new))
+	        msg = _("contains too long of a monotonic character sequence");
+
+	if (!msg && (usercheck(opt, newmono, usermono) || gecoscheck(pamh, opt, newmono, user)))
+	        msg = _("contains the user name in some form");
+
+	free(usermono);
+	if (newmono) {
+		memset(newmono, 0, strlen(newmono));
+		free(newmono);
+	}
+	if (oldmono) {
+	  memset(oldmono, 0, strlen(oldmono));
+	  free(oldmono);
+	}
+	if (wrapped) {
+	  memset(wrapped, 0, strlen(wrapped));
+	  free(wrapped);
+	}
+
+	return msg;
+}
+
+
+static int _pam_unix_approve_pass(pam_handle_t *pamh,
+                                  unsigned int ctrl,
+				  struct cracklib_options *opt,
+                                  const char *pass_old,
+                                  const char *pass_new)
+{
+    const char *msg = NULL;
+    const char *user;
+    int retval;
+
+    if (pass_new == NULL || (pass_old && !strcmp(pass_old,pass_new))) {
+        if (ctrl & PAM_DEBUG_ARG)
+            pam_syslog(pamh, LOG_DEBUG, "bad authentication token");
+        pam_error(pamh, "%s", pass_new == NULL ?
+		   _("No password has been supplied.") :
+		   _("The password has not been changed."));
+        return PAM_AUTHTOK_ERR;
+    }
+
+    retval = pam_get_user(pamh, &user, NULL);
+    if (retval != PAM_SUCCESS) {
+	if (ctrl & PAM_DEBUG_ARG)
+		pam_syslog(pamh, LOG_NOTICE, "cannot determine user name: %s",
+			   pam_strerror(pamh, retval));
+	return PAM_AUTHTOK_ERR;
+    }
+    /*
+     * if one wanted to hardwire authentication token strength
+     * checking this would be the place
+     */
+    msg = password_check(pamh, opt, pass_old, pass_new, user);
+
+    if (msg) {
+        if (ctrl & PAM_DEBUG_ARG)
+            pam_syslog(pamh, LOG_NOTICE,
+		       "new passwd fails strength check: %s", msg);
+        pam_error(pamh, _("BAD PASSWORD: %s"), msg);
+        return PAM_AUTHTOK_ERR;
+    };
+    return PAM_SUCCESS;
+
+}
+
+/* The Main Thing (by Cristian Gafton, CEO at this module :-)
+ * (stolen from http://home.netscape.com)
+ */
+int
+pam_sm_chauthtok(pam_handle_t *pamh, int flags, int argc, const char **argv)
+{
+    unsigned int ctrl;
+    struct cracklib_options options;
+
+    D(("called."));
+
+    memset(&options, 0, sizeof(options));
+    options.retry_times = CO_RETRY_TIMES;
+    options.diff_ok = CO_DIFF_OK;
+    options.min_length = CO_MIN_LENGTH;
+    options.dig_credit = CO_DIG_CREDIT;
+    options.up_credit = CO_UP_CREDIT;
+    options.low_credit = CO_LOW_CREDIT;
+    options.oth_credit = CO_OTH_CREDIT;
+    options.cracklib_dictpath = CRACKLIB_DICTS;
+
+    ctrl = _pam_parse(pamh, &options, argc, argv);
+
+    if (flags & PAM_PRELIM_CHECK) {
+        /* Check for passwd dictionary */
+        /* We cannot do that, since the original path is compiled
+	   into the cracklib library and we don't know it.  */
+        return PAM_SUCCESS;
+    } else if (flags & PAM_UPDATE_AUTHTOK) {
+        int retval;
+	const void *oldtoken;
+	int tries;
+
+	D(("do update"));
+
+
+	retval = pam_get_item (pamh, PAM_OLDAUTHTOK, &oldtoken);
+        if (retval != PAM_SUCCESS) {
+            if (ctrl & PAM_DEBUG_ARG)
+                pam_syslog(pamh,LOG_ERR,"Can not get old passwd");
+            oldtoken = NULL;
+        }
+
+	tries = 0;
+	while (tries < options.retry_times) {
+	  const char *crack_msg;
+	  const char *newtoken = NULL;
+
+
+	  tries++;
+
+	  /* Planned modus operandi:
+	   * Get a passwd.
+	   * Verify it against cracklib.
+	   * If okay get it a second time.
+	   * Check to be the same with the first one.
+	   * set PAM_AUTHTOK and return
+	   */
+
+	  retval = pam_get_authtok_noverify (pamh, &newtoken, NULL);
+	  if (retval != PAM_SUCCESS) {
+	    pam_syslog(pamh, LOG_ERR, "pam_get_authtok_noverify returned error: %s",
+		       pam_strerror (pamh, retval));
+	    continue;
+	  } else if (newtoken == NULL) {      /* user aborted password change, quit */
+	    return PAM_AUTHTOK_ERR;
+	  }
+
+	  D(("testing password"));
+	  /* now test this passwd against cracklib */
+
+	  D(("against cracklib"));
+	  if ((crack_msg = FascistCheck (newtoken, options.cracklib_dictpath))) {
+	    if (ctrl & PAM_DEBUG_ARG)
+	      pam_syslog(pamh,LOG_DEBUG,"bad password: %s",crack_msg);
+	    pam_error (pamh, _("BAD PASSWORD: %s"), crack_msg);
+	    if (getuid() || options.enforce_for_root || (flags & PAM_CHANGE_EXPIRED_AUTHTOK))
+	      {
+		pam_set_item (pamh, PAM_AUTHTOK, NULL);
+		retval = PAM_AUTHTOK_ERR;
+		continue;
+	      }
+	  }
+
+	  /* check it for strength too... */
+	  D(("for strength"));
+	  retval = _pam_unix_approve_pass (pamh, ctrl, &options,
+					   oldtoken, newtoken);
+	  if (retval != PAM_SUCCESS) {
+	    if (getuid() || options.enforce_for_root || (flags & PAM_CHANGE_EXPIRED_AUTHTOK))
+	      {
+		pam_set_item(pamh, PAM_AUTHTOK, NULL);
+		retval = PAM_AUTHTOK_ERR;
+		continue;
+	      }
+	  }
+
+	  retval = pam_get_authtok_verify (pamh, &newtoken, NULL);
+	  if (retval != PAM_SUCCESS) {
+	    pam_syslog(pamh, LOG_ERR, "pam_get_authtok_verify returned error: %s",
+		       pam_strerror (pamh, retval));
+	    pam_set_item(pamh, PAM_AUTHTOK, NULL);
+	    continue;
+	  } else if (newtoken == NULL) {      /* user aborted password change, quit */
+	    return PAM_AUTHTOK_ERR;
+	  }
+
+	  return PAM_SUCCESS;
+        }
+
+	D(("returning because maxtries reached"));
+
+	pam_set_item (pamh, PAM_AUTHTOK, NULL);
+
+	/* if we have only one try, we can use the real reason,
+	   else say that there were too many tries. */
+	if (options.retry_times > 1)
+	  return PAM_MAXTRIES;
+	else
+	  return retval;
+
+    } else {
+        if (ctrl & PAM_DEBUG_ARG)
+            pam_syslog(pamh, LOG_NOTICE, "UNKNOWN flags setting %02X",flags);
+        return PAM_SERVICE_ERR;
+    }
+
+    /* Not reached */
+    return PAM_SERVICE_ERR;
+}
+
+
+
+/*
+ * Copyright (c) Cristian Gafton <gafton@redhat.com>, 1996.
+ *                                              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, and the entire permission notice in its entirety,
+ *    including the disclaimer of warranties.
+ * 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. The name of the author may not be used to endorse or promote
+ *    products derived from this software without specific prior
+ *    written permission.
+ *
+ * ALTERNATIVELY, this product may be distributed under the terms of
+ * the GNU Public License, in which case the provisions of the GPL are
+ * required INSTEAD OF the above restrictions.  (This clause is
+ * necessary due to a potential bad interaction between the GPL and
+ * the restrictions contained in a BSD-style copyright.)
+ *
+ * THIS SOFTWARE IS PROVIDED `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 THE AUTHOR 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.
+ *
+ * The following copyright was appended for the long password support
+ * added with the libpam 0.58 release:
+ *
+ * Modificaton Copyright (c) Philip W. Dalrymple III <pwd@mdtsoft.com>
+ *       1997. All rights reserved
+ *
+ * THE MODIFICATION THAT PROVIDES SUPPORT FOR LONG PASSWORD TYPE CHECKING TO
+ * THIS SOFTWARE IS PROVIDED `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 THE AUTHOR 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.
+ */
diff --git a/modules/pam_cracklib/tst-pam_cracklib b/modules/pam_cracklib/tst-pam_cracklib
new file mode 100755
index 0000000..46a7060
--- /dev/null
+++ b/modules/pam_cracklib/tst-pam_cracklib
@@ -0,0 +1,2 @@
+#!/bin/sh
+../../tests/tst-dlopen .libs/pam_cracklib.so