Adding upstream version 1.3.1.upstream/1.3.1upstream

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

11 files changed, 2769 insertions, 0 deletions

diff --git a/modules/pam_group/Makefile.am b/modules/pam_group/Makefile.am
new file mode 100644
index 0000000..6c1c521
--- /dev/null
+++ b/modules/pam_group/Makefile.am
@@ -0,0 +1,34 @@
+#
+# Copyright (c) 2005, 2006, 2009 Thorsten Kukuk <kukuk@suse.de>
+#
+
+CLEANFILES = *~
+MAINTAINERCLEANFILES = $(MANS) README
+
+EXTRA_DIST = README group.conf $(MANS) $(XMLS) tst-pam_group
+
+man_MANS = group.conf.5 pam_group.8
+XMLS = README.xml group.conf.5.xml pam_group.8.xml
+
+securelibdir = $(SECUREDIR)
+secureconfdir = $(SCONFIGDIR)
+
+AM_CFLAGS = -I$(top_srcdir)/libpam/include -I$(top_srcdir)/libpamc/include \
+	-DPAM_GROUP_CONF=\"$(SCONFIGDIR)/group.conf\"
+AM_LDFLAGS = -no-undefined -avoid-version -module
+if HAVE_VERSIONING
+  AM_LDFLAGS += -Wl,--version-script=$(srcdir)/../modules.map
+endif
+
+securelib_LTLIBRARIES = pam_group.la
+pam_group_la_LIBADD = $(top_builddir)/libpam/libpam.la
+
+secureconf_DATA = group.conf
+
+TESTS = tst-pam_group
+
+if ENABLE_REGENERATE_MAN
+noinst_DATA = README
+README: pam_group.8.xml group.conf.5.xml
+-include $(top_srcdir)/Make.xml.rules
+endif
diff --git a/modules/pam_group/Makefile.in b/modules/pam_group/Makefile.in
new file mode 100644
index 0000000..412e59f
--- /dev/null
+++ b/modules/pam_group/Makefile.in
@@ -0,0 +1,1187 @@
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+AM_CFLAGS = -I$(top_srcdir)/libpam/include -I$(top_srcdir)/libpamc/include \
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+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu modules/pam_group/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
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+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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+	list2=; for p in $$list; do \
+	  if test -f $$p; then \
+	    list2="$$list2 $$p"; \
+	  else :; fi; \
+	done; \
+	test -z "$$list2" || { \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(securelibdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(securelibdir)" || exit 1; \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$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:
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+	@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_group.la: $(pam_group_la_OBJECTS) $(pam_group_la_DEPENDENCIES) $(EXTRA_pam_group_la_DEPENDENCIES) 
+	$(AM_V_CCLD)$(LINK) -rpath $(securelibdir) $(pam_group_la_OBJECTS) $(pam_group_la_LIBADD) $(LIBS)
+
+mostlyclean-compile:
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+
+distclean-compile:
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+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/pam_group.Plo@am__quote@
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+	} | sed -e 's,.*/,,;h;s,.*\.,,;s,^[^8][0-9a-z]*$$,8,;x' \
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+	  $(MKDIR_P) "$(DESTDIR)$(secureconfdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
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+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(secureconfdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(secureconfdir)" || exit $$?; \
+	done
+
+uninstall-secureconfDATA:
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+# Recover from deleted '.trs' file; this should ensure that
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+	    echo "$${color_start}# $$desc $$count$${color_end}"; \
+	}; \
+	create_testsuite_report () \
+	{ \
+	  result_count $$1 "TOTAL:" $$all   "$$brg"; \
+	  result_count $$1 "PASS: " $$pass  "$$grn"; \
+	  result_count $$1 "SKIP: " $$skip  "$$blu"; \
+	  result_count $$1 "XFAIL:" $$xfail "$$lgn"; \
+	  result_count $$1 "FAIL: " $$fail  "$$red"; \
+	  result_count $$1 "XPASS:" $$xpass "$$red"; \
+	  result_count $$1 "ERROR:" $$error "$$mgn"; \
+	}; \
+	{								\
+	  echo "$(PACKAGE_STRING): $(subdir)/$(TEST_SUITE_LOG)" |	\
+	    $(am__rst_title);						\
+	  create_testsuite_report --no-color;				\
+	  echo;								\
+	  echo ".. contents:: :depth: 2";				\
+	  echo;								\
+	  for b in $$bases; do echo $$b; done				\
+	    | $(am__create_global_log);					\
+	} >$(TEST_SUITE_LOG).tmp || exit 1;				\
+	mv $(TEST_SUITE_LOG).tmp $(TEST_SUITE_LOG);			\
+	if $$success; then						\
+	  col="$$grn";							\
+	 else								\
+	  col="$$red";							\
+	  test x"$$VERBOSE" = x || cat $(TEST_SUITE_LOG);		\
+	fi;								\
+	echo "$${col}$$br$${std}"; 					\
+	echo "$${col}Testsuite summary for $(PACKAGE_STRING)$${std}";	\
+	echo "$${col}$$br$${std}"; 					\
+	create_testsuite_report --maybe-color;				\
+	echo "$$col$$br$$std";						\
+	if $$success; then :; else					\
+	  echo "$${col}See $(subdir)/$(TEST_SUITE_LOG)$${std}";		\
+	  if test -n "$(PACKAGE_BUGREPORT)"; then			\
+	    echo "$${col}Please report to $(PACKAGE_BUGREPORT)$${std}";	\
+	  fi;								\
+	  echo "$$col$$br$$std";					\
+	fi;								\
+	$$success || exit 1
+
+check-TESTS:
+	@list='$(RECHECK_LOGS)';           test -z "$$list" || rm -f $$list
+	@list='$(RECHECK_LOGS:.log=.trs)'; test -z "$$list" || rm -f $$list
+	@test -z "$(TEST_SUITE_LOG)" || rm -f $(TEST_SUITE_LOG)
+	@set +e; $(am__set_TESTS_bases); \
+	log_list=`for i in $$bases; do echo $$i.log; done`; \
+	trs_list=`for i in $$bases; do echo $$i.trs; done`; \
+	log_list=`echo $$log_list`; trs_list=`echo $$trs_list`; \
+	$(MAKE) $(AM_MAKEFLAGS) $(TEST_SUITE_LOG) TEST_LOGS="$$log_list"; \
+	exit $$?;
+recheck: all 
+	@test -z "$(TEST_SUITE_LOG)" || rm -f $(TEST_SUITE_LOG)
+	@set +e; $(am__set_TESTS_bases); \
+	bases=`for i in $$bases; do echo $$i; done \
+	         | $(am__list_recheck_tests)` || exit 1; \
+	log_list=`for i in $$bases; do echo $$i.log; done`; \
+	log_list=`echo $$log_list`; \
+	$(MAKE) $(AM_MAKEFLAGS) $(TEST_SUITE_LOG) \
+	        am__force_recheck=am--force-recheck \
+	        TEST_LOGS="$$log_list"; \
+	exit $$?
+tst-pam_group.log: tst-pam_group
+	@p='tst-pam_group'; \
+	b='tst-pam_group'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+.test.log:
+	@p='$<'; \
+	$(am__set_b); \
+	$(am__check_pre) $(TEST_LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_TEST_LOG_DRIVER_FLAGS) $(TEST_LOG_DRIVER_FLAGS) -- $(TEST_LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+@am__EXEEXT_TRUE@.test$(EXEEXT).log:
+@am__EXEEXT_TRUE@	@p='$<'; \
+@am__EXEEXT_TRUE@	$(am__set_b); \
+@am__EXEEXT_TRUE@	$(am__check_pre) $(TEST_LOG_DRIVER) --test-name "$$f" \
+@am__EXEEXT_TRUE@	--log-file $$b.log --trs-file $$b.trs \
+@am__EXEEXT_TRUE@	$(am__common_driver_flags) $(AM_TEST_LOG_DRIVER_FLAGS) $(TEST_LOG_DRIVER_FLAGS) -- $(TEST_LOG_COMPILE) \
+@am__EXEEXT_TRUE@	"$$tst" $(AM_TESTS_FD_REDIRECT)
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+	$(MAKE) $(AM_MAKEFLAGS) check-TESTS
+check: check-am
+all-am: Makefile $(LTLIBRARIES) $(MANS) $(DATA)
+installdirs:
+	for dir in "$(DESTDIR)$(securelibdir)" "$(DESTDIR)$(man5dir)" "$(DESTDIR)$(man8dir)" "$(DESTDIR)$(secureconfdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+	-test -z "$(TEST_LOGS)" || rm -f $(TEST_LOGS)
+	-test -z "$(TEST_LOGS:.log=.trs)" || rm -f $(TEST_LOGS:.log=.trs)
+	-test -z "$(TEST_SUITE_LOG)" || rm -f $(TEST_SUITE_LOG)
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic clean-libtool clean-securelibLTLIBRARIES \
+	mostlyclean-am
+
+distclean: distclean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-man install-secureconfDATA \
+	install-securelibLTLIBRARIES
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man: install-man5 install-man8
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-man uninstall-secureconfDATA \
+	uninstall-securelibLTLIBRARIES
+
+uninstall-man: uninstall-man5 uninstall-man8
+
+.MAKE: check-am install-am install-strip
+
+.PHONY: CTAGS GTAGS TAGS all all-am check check-TESTS check-am clean \
+	clean-generic clean-libtool clean-securelibLTLIBRARIES \
+	cscopelist-am ctags ctags-am distclean distclean-compile \
+	distclean-generic distclean-libtool distclean-tags distdir dvi \
+	dvi-am html html-am info info-am install install-am \
+	install-data install-data-am install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man install-man5 \
+	install-man8 install-pdf install-pdf-am install-ps \
+	install-ps-am install-secureconfDATA \
+	install-securelibLTLIBRARIES install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
+	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+	recheck tags tags-am uninstall uninstall-am uninstall-man \
+	uninstall-man5 uninstall-man8 uninstall-secureconfDATA \
+	uninstall-securelibLTLIBRARIES
+
+@ENABLE_REGENERATE_MAN_TRUE@README: pam_group.8.xml group.conf.5.xml
+@ENABLE_REGENERATE_MAN_TRUE@-include $(top_srcdir)/Make.xml.rules
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/modules/pam_group/README b/modules/pam_group/README
new file mode 100644
index 0000000..9d6d097
--- /dev/null
+++ b/modules/pam_group/README
@@ -0,0 +1,52 @@
+pam_group — PAM module for group access
+
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+
+DESCRIPTION
+
+The pam_group PAM module does not authenticate the user, but instead it grants
+group memberships (in the credential setting phase of the authentication
+module) to the user. Such memberships are based on the service they are
+applying for.
+
+By default rules for group memberships are taken from config file /etc/security
+/group.conf.
+
+This module's usefulness relies on the file-systems accessible to the user. The
+point being that once granted the membership of a group, the user may attempt
+to create a setgid binary with a restricted group ownership. Later, when the
+user is not given membership to this group, they can recover group membership
+with the precompiled binary. The reason that the file-systems that the user has
+access to are so significant, is the fact that when a system is mounted nosuid
+the user is unable to create or execute such a binary file. For this module to
+provide any level of security, all file-systems that the user has write access
+to should be mounted nosuid.
+
+The pam_group module functions in parallel with the /etc/group file. If the
+user is granted any groups based on the behavior of this module, they are
+granted in addition to those entries /etc/group (or equivalent).
+
+EXAMPLES
+
+These are some example lines which might be specified in /etc/security/
+group.conf.
+
+Running 'xsh' on tty* (any ttyXXX device), the user 'us' is given access to the
+floppy (through membership of the floppy group)
+
+xsh;tty*&!ttyp*;us;Al0000-2400;floppy
+
+Running 'xsh' on tty* (any ttyXXX device), the users 'sword', 'pike' and
+'shield' are given access to games (through membership of the floppy group)
+after work hours.
+
+xsh; tty* ;sword|pike|shield;!Wk0900-1800;games, sound
+xsh; tty* ;*;Al0900-1800;floppy
+
+
+Any member of the group 'admin' running 'xsh' on tty*, is granted access (at
+any time) to the group 'plugdev'
+
+xsh; tty* ;%admin;Al0000-2400;plugdev
+
+
diff --git a/modules/pam_group/README.xml b/modules/pam_group/README.xml
new file mode 100644
index 0000000..387d698
--- /dev/null
+++ b/modules/pam_group/README.xml
@@ -0,0 +1,34 @@
+<?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 pamgroup SYSTEM "pam_group.8.xml">
+-->
+<!--
+<!ENTITY groupconf SYSTEM "group.conf.5.xml">
+-->
+]>
+
+<article>
+
+  <articleinfo>
+
+    <title>
+      <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+      href="pam_group.8.xml" xpointer='xpointer(//refnamediv[@id = "pam_group-name"]/*)'/>
+    </title>
+
+  </articleinfo>
+
+  <section>
+    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+      href="pam_group.8.xml" xpointer='xpointer(//refsect1[@id = "pam_group-description"]/*)'/>
+  </section>
+
+  <section>
+    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+      href="group.conf.5.xml" xpointer='xpointer(//refsect1[@id = "group.conf-examples"]/*)'/>
+  </section>
+
+</article>
diff --git a/modules/pam_group/group.conf b/modules/pam_group/group.conf
new file mode 100644
index 0000000..7c07a26
--- /dev/null
+++ b/modules/pam_group/group.conf
@@ -0,0 +1,106 @@
+#
+# This is the configuration file for the pam_group module.
+#
+
+#
+# *** Please note that giving group membership on a session basis is
+# *** NOT inherently secure. If a user can create an executable that
+# *** is setgid a group that they are infrequently given membership
+# *** of, they can basically obtain group membership any time they
+# *** like. Example: games are allowed between the hours of 6pm and 6am
+# *** user joe logs in at 7pm writes a small C-program toplay.c that
+# *** invokes their favorite shell, compiles it and does
+# *** "chgrp play toplay; chmod g+s toplay". They are basically able
+# *** to play games any time... You have been warned. AGM
+#
+
+#
+# The syntax of the lines is as follows:
+#
+#       services;ttys;users;times;groups
+#
+# white space is ignored and lines maybe extended with '\\n' (escaped
+# newlines). From reading these comments, it is clear that
+# text following a '#' is ignored to the end of the line.
+#
+# the combination of individual users/terminals etc is a logic list
+# namely individual tokens that are optionally prefixed with '!' (logical
+# not) and separated with '&' (logical and) and '|' (logical or).
+#
+# services
+#       is a logic list of PAM service names that the rule applies to.
+#
+# ttys
+#       is a logic list of terminal names that this rule applies to.
+#
+# users
+#       is a logic list of users or a netgroup of users to whom this
+#       rule applies.
+#
+# NB. For these items the simple wildcard '*' may be used only once.
+#     With netgroups no wildcards or logic operators are allowed.
+#
+# times
+#       It is used to indicate "when" these groups are to be given to the
+#       user. The format here is a logic list of day/time-range
+#       entries the days are specified by a sequence of two character
+#       entries, MoTuSa for example is Monday Tuesday and Saturday. Note
+#       that repeated days are unset MoMo = no day, and MoWk = all weekdays
+#       bar Monday. The two character combinations accepted are
+#
+#               Mo Tu We Th Fr Sa Su Wk Wd Al
+#
+#       the last two being week-end days and all 7 days of the week
+#       respectively. As a final example, AlFr means all days except Friday.
+#
+#       Each day/time-range can be prefixed with a '!' to indicate "anything
+#       but"
+#
+#       The time-range part is two 24-hour times HHMM separated by a hyphen
+#       indicating the start and finish time (if the finish time is smaller
+#       than the start time it is deemed to apply on the following day).
+#
+# groups
+#	The (comma or space separated) list of groups that the user
+#	inherits membership of. These groups are added if the previous
+#	fields are satisfied by the user's request
+#
+# For a rule to be active, ALL of service+ttys+users must be satisfied
+# by the applying process.
+#
+
+#
+# Note, to get this to work as it is currently typed you need
+#
+# 1. to run an application as root
+# 2. add the following groups to the /etc/group file:
+#		floppy, play, sound
+#
+
+#
+# Here is a simple example: running 'xsh' on tty* (any ttyXXX device),
+# the user 'us' is given access to the floppy (through membership of
+# the floppy group)
+#
+
+#xsh;tty*&!ttyp*;us;Al0000-2400;floppy
+
+#
+# another example: running 'xsh' on tty* (any ttyXXX device),
+# the user 'sword' is given access to games (through membership of
+# the sound and play group) after work hours.
+#
+
+#xsh; tty* ;sword;!Wk0900-1800;sound, play
+#xsh; tty* ;*;Al0900-1800;floppy
+
+#
+# yet another example: any member of the group 'admin' running
+# 'xsh' on tty*, is granted access (at any time) to the group 'plugdev'
+#
+
+#xsh; tty* ;%admin;Al0000-2400;plugdev
+
+#
+# End of group.conf file
+#
diff --git a/modules/pam_group/group.conf.5 b/modules/pam_group/group.conf.5
new file mode 100644
index 0000000..933a22e
--- /dev/null
+++ b/modules/pam_group/group.conf.5
@@ -0,0 +1,119 @@
+'\" t
+.\"     Title: group.conf
+.\"    Author: [see the "AUTHOR" section]
+.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
+.\"      Date: 05/18/2017
+.\"    Manual: Linux-PAM Manual
+.\"    Source: Linux-PAM Manual
+.\"  Language: English
+.\"
+.TH "GROUP\&.CONF" "5" "05/18/2017" "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"
+group.conf \- configuration file for the pam_group module
+.SH "DESCRIPTION"
+.PP
+The pam_group PAM module does not authenticate the user, but instead it grants group memberships (in the credential setting phase of the authentication module) to the user\&. Such memberships are based on the service they are applying for\&.
+.PP
+For this module to function correctly there must be a correctly formatted
+/etc/security/group\&.conf
+file present\&. White spaces are ignored and lines maybe extended with \*(Aq\e\*(Aq (escaped newlines)\&. Text following a \*(Aq#\*(Aq is ignored to the end of the line\&.
+.PP
+The syntax of the lines is as follows:
+.PP
+\fIservices\fR;\fIttys\fR;\fIusers\fR;\fItimes\fR;\fIgroups\fR
+.PP
+The first field, the
+\fIservices\fR
+field, is a logic list of PAM service names that the rule applies to\&.
+.PP
+The second field, the
+\fItty\fR
+field, is a logic list of terminal names that this rule applies to\&.
+.PP
+The third field, the
+\fIusers\fR
+field, is a logic list of users, or a UNIX group, or a netgroup of users to whom this rule applies\&. Group names are preceded by a \*(Aq%\*(Aq symbol, while netgroup names are preceded by a \*(Aq@\*(Aq symbol\&.
+.PP
+For these items the simple wildcard \*(Aq*\*(Aq may be used only once\&. With UNIX groups or netgroups no wildcards or logic operators are allowed\&.
+.PP
+The
+\fItimes\fR
+field is used to indicate "when" these groups are to be given to the user\&. The format here is a logic list of day/time\-range entries\&. The days are specified by a sequence of two character entries, MoTuSa for example is Monday Tuesday and Saturday\&. Note that repeated days are unset MoMo = no day, and MoWk = all weekdays bar Monday\&. The two character combinations accepted are Mo Tu We Th Fr Sa Su Wk Wd Al, the last two being week\-end days and all 7 days of the week respectively\&. As a final example, AlFr means all days except Friday\&.
+.PP
+Each day/time\-range can be prefixed with a \*(Aq!\*(Aq to indicate "anything but"\&. The time\-range part is two 24\-hour times HHMM, separated by a hyphen, indicating the start and finish time (if the finish time is smaller than the start time it is deemed to apply on the following day)\&.
+.PP
+The
+\fIgroups\fR
+field is a comma or space separated list of groups that the user inherits membership of\&. These groups are added if the previous fields are satisfied by the user\*(Aqs request\&.
+.PP
+For a rule to be active, ALL of service+ttys+users must be satisfied by the applying process\&.
+.SH "EXAMPLES"
+.PP
+These are some example lines which might be specified in
+/etc/security/group\&.conf\&.
+.PP
+Running \*(Aqxsh\*(Aq on tty* (any ttyXXX device), the user \*(Aqus\*(Aq is given access to the floppy (through membership of the floppy group)
+.sp
+.if n \{\
+.RS 4
+.\}
+.nf
+xsh;tty*&!ttyp*;us;Al0000\-2400;floppy
+.fi
+.if n \{\
+.RE
+.\}
+.PP
+Running \*(Aqxsh\*(Aq on tty* (any ttyXXX device), the users \*(Aqsword\*(Aq, \*(Aqpike\*(Aq and \*(Aqshield\*(Aq are given access to games (through membership of the floppy group) after work hours\&.
+.sp
+.if n \{\
+.RS 4
+.\}
+.nf
+xsh; tty* ;sword|pike|shield;!Wk0900\-1800;games, sound
+xsh; tty* ;*;Al0900\-1800;floppy
+    
+.fi
+.if n \{\
+.RE
+.\}
+.PP
+Any member of the group \*(Aqadmin\*(Aq running \*(Aqxsh\*(Aq on tty*, is granted access (at any time) to the group \*(Aqplugdev\*(Aq
+.sp
+.if n \{\
+.RS 4
+.\}
+.nf
+xsh; tty* ;%admin;Al0000\-2400;plugdev
+     
+.fi
+.if n \{\
+.RE
+.\}
+.SH "SEE ALSO"
+.PP
+\fBpam_group\fR(8),
+\fBpam.d\fR(5),
+\fBpam\fR(8)
+.SH "AUTHOR"
+.PP
+pam_group was written by Andrew G\&. Morgan <morgan@kernel\&.org>\&.
diff --git a/modules/pam_group/group.conf.5.xml b/modules/pam_group/group.conf.5.xml
new file mode 100644
index 0000000..fc5370f
--- /dev/null
+++ b/modules/pam_group/group.conf.5.xml
@@ -0,0 +1,141 @@
+<?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="group.conf">
+
+  <refmeta>
+    <refentrytitle>group.conf</refentrytitle>
+    <manvolnum>5</manvolnum>
+    <refmiscinfo class="sectdesc">Linux-PAM Manual</refmiscinfo>
+  </refmeta>
+
+  <refnamediv>
+    <refname>group.conf</refname>
+    <refpurpose>configuration file for the pam_group module</refpurpose>
+  </refnamediv>
+
+  <refsect1 id='group.conf-description'>
+    <title>DESCRIPTION</title>
+
+    <para>
+      The pam_group PAM module does not authenticate the user, but instead
+      it grants group memberships (in the credential setting phase of the
+      authentication module) to the user. Such memberships are based on the
+      service they are applying for.
+    </para>
+    <para>
+      For this module to function correctly there must be a correctly
+      formatted <filename>/etc/security/group.conf</filename> file present.
+      White spaces are ignored and lines maybe extended with '\' (escaped
+      newlines). Text following a '#' is ignored to the end of the line.
+   </para>
+
+    <para>
+      The syntax of the lines is as follows:
+    </para>
+
+    <para>
+      <replaceable>services</replaceable>;<replaceable>ttys</replaceable>;<replaceable>users</replaceable>;<replaceable>times</replaceable>;<replaceable>groups</replaceable>
+    </para>
+
+
+    <para>
+      The first field, the <replaceable>services</replaceable> field, is a logic list
+      of PAM service names that the rule applies to.
+    </para>
+
+    <para>
+      The second field, the <replaceable>tty</replaceable>
+      field, is a logic list of terminal names that this rule applies to.
+    </para>
+
+    <para>
+      The third field, the <replaceable>users</replaceable>
+      field, is a logic list of users, or a UNIX group, or a netgroup of
+      users to whom this rule applies. Group names are preceded by a '%'
+      symbol, while netgroup names are preceded by a '@' symbol.
+    </para>
+
+    <para>
+      For these items the simple wildcard '*' may be used only once.
+      With UNIX groups or netgroups no wildcards or logic operators
+      are allowed.
+    </para>
+
+    <para>
+      The <replaceable>times</replaceable> field is used to indicate "when"
+      these groups are to be given to the user. The format here is a logic
+      list of day/time-range entries. The days are specified by a sequence of
+      two character entries, MoTuSa for example is Monday Tuesday and Saturday.
+      Note that repeated days are unset MoMo = no day, and MoWk = all weekdays
+      bar Monday. The two character combinations accepted are Mo Tu We Th Fr Sa
+      Su Wk Wd Al, the last two being week-end days and all 7 days of the week
+      respectively. As a final example, AlFr means all days except Friday.
+    </para>
+    <para>
+      Each day/time-range can be prefixed with a '!' to indicate "anything but".
+      The time-range part is two 24-hour times HHMM, separated by a hyphen,
+      indicating the start and finish time (if the finish time is smaller
+      than the start time it is deemed to apply on the following day).
+    </para>
+
+    <para>
+      The <replaceable>groups</replaceable> field is a comma or space
+      separated list of groups that the user inherits membership of. These
+      groups are added if the previous fields are satisfied by the user's request.
+    </para>
+
+    <para>
+      For a rule to be active, ALL of service+ttys+users must be satisfied
+      by the applying process.
+    </para>
+  </refsect1>
+
+  <refsect1 id="group.conf-examples">
+    <title>EXAMPLES</title>
+    <para>
+      These are some example lines which might be specified in
+      <filename>/etc/security/group.conf</filename>.
+    </para>
+
+    <para>
+      Running 'xsh' on tty* (any ttyXXX device), the user 'us' is given access
+      to the floppy (through membership of the floppy group)
+    </para>
+    <programlisting>xsh;tty*&amp;!ttyp*;us;Al0000-2400;floppy</programlisting>
+
+    <para>
+      Running 'xsh' on tty* (any ttyXXX device), the users 'sword', 'pike' and
+      'shield' are given access to games (through membership of the floppy group) after work hours.
+    </para>
+    <programlisting>
+xsh; tty* ;sword|pike|shield;!Wk0900-1800;games, sound
+xsh; tty* ;*;Al0900-1800;floppy
+    </programlisting>
+    <para>
+      Any member of the group 'admin' running 'xsh' on tty*,
+      is granted access (at any time) to the group 'plugdev'
+    </para>
+    <programlisting>
+xsh; tty* ;%admin;Al0000-2400;plugdev
+     </programlisting>
+
+  </refsect1>
+
+  <refsect1 id="group.conf-see_also">
+    <title>SEE ALSO</title>
+    <para>
+      <citerefentry><refentrytitle>pam_group</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>pam.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+    </para>
+  </refsect1>
+
+  <refsect1 id="group.conf-author">
+    <title>AUTHOR</title>
+    <para>
+      pam_group was written by Andrew G. Morgan &lt;morgan@kernel.org&gt;.
+    </para>
+  </refsect1>
+</refentry>
diff --git a/modules/pam_group/pam_group.8 b/modules/pam_group/pam_group.8
new file mode 100644
index 0000000..804c921
--- /dev/null
+++ b/modules/pam_group/pam_group.8
@@ -0,0 +1,109 @@
+'\" t
+.\"     Title: pam_group
+.\"    Author: [see the "AUTHORS" section]
+.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
+.\"      Date: 05/18/2017
+.\"    Manual: Linux-PAM Manual
+.\"    Source: Linux-PAM Manual
+.\"  Language: English
+.\"
+.TH "PAM_GROUP" "8" "05/18/2017" "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_group \- PAM module for group access
+.SH "SYNOPSIS"
+.HP \w'\fBpam_group\&.so\fR\ 'u
+\fBpam_group\&.so\fR
+.SH "DESCRIPTION"
+.PP
+The pam_group PAM module does not authenticate the user, but instead it grants group memberships (in the credential setting phase of the authentication module) to the user\&. Such memberships are based on the service they are applying for\&.
+.PP
+By default rules for group memberships are taken from config file
+/etc/security/group\&.conf\&.
+.PP
+This module\*(Aqs usefulness relies on the file\-systems accessible to the user\&. The point being that once granted the membership of a group, the user may attempt to create a
+\fBsetgid\fR
+binary with a restricted group ownership\&. Later, when the user is not given membership to this group, they can recover group membership with the precompiled binary\&. The reason that the file\-systems that the user has access to are so significant, is the fact that when a system is mounted
+\fInosuid\fR
+the user is unable to create or execute such a binary file\&. For this module to provide any level of security, all file\-systems that the user has write access to should be mounted
+\fInosuid\fR\&.
+.PP
+The pam_group module functions in parallel with the
+/etc/group
+file\&. If the user is granted any groups based on the behavior of this module, they are granted
+\fIin addition\fR
+to those entries
+/etc/group
+(or equivalent)\&.
+.SH "OPTIONS"
+.PP
+This module does not recognise any options\&.
+.SH "MODULE TYPES PROVIDED"
+.PP
+Only the
+\fBauth\fR
+module type is provided\&.
+.SH "RETURN VALUES"
+.PP
+PAM_SUCCESS
+.RS 4
+group membership was granted\&.
+.RE
+.PP
+PAM_ABORT
+.RS 4
+Not all relevant data could be gotten\&.
+.RE
+.PP
+PAM_BUF_ERR
+.RS 4
+Memory buffer error\&.
+.RE
+.PP
+PAM_CRED_ERR
+.RS 4
+Group membership was not granted\&.
+.RE
+.PP
+PAM_IGNORE
+.RS 4
+\fBpam_sm_authenticate\fR
+was called which does nothing\&.
+.RE
+.PP
+PAM_USER_UNKNOWN
+.RS 4
+The user is not known to the system\&.
+.RE
+.SH "FILES"
+.PP
+/etc/security/group\&.conf
+.RS 4
+Default configuration file
+.RE
+.SH "SEE ALSO"
+.PP
+\fBgroup.conf\fR(5),
+\fBpam.d\fR(5),
+\fBpam\fR(8)\&.
+.SH "AUTHORS"
+.PP
+pam_group was written by Andrew G\&. Morgan <morgan@kernel\&.org>\&.
diff --git a/modules/pam_group/pam_group.8.xml b/modules/pam_group/pam_group.8.xml
new file mode 100644
index 0000000..2c1c905
--- /dev/null
+++ b/modules/pam_group/pam_group.8.xml
@@ -0,0 +1,162 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
+                   "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
+
+<refentry id='pam_group'>
+
+  <refmeta>
+    <refentrytitle>pam_group</refentrytitle>
+    <manvolnum>8</manvolnum>
+    <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo>
+  </refmeta>
+
+  <refnamediv id='pam_group-name'>
+    <refname>pam_group</refname>
+    <refpurpose>
+      PAM module for group access
+    </refpurpose>
+  </refnamediv>
+
+<!-- body begins here -->
+
+  <refsynopsisdiv>
+    <cmdsynopsis id="pam_group-cmdsynopsis">
+      <command>pam_group.so</command>
+    </cmdsynopsis>
+  </refsynopsisdiv>
+
+
+  <refsect1 id="pam_group-description">
+    <title>DESCRIPTION</title>
+    <para>
+      The pam_group PAM module does not authenticate the user, but instead
+      it grants group memberships (in the credential setting phase of the
+      authentication module) to the user. Such memberships are based on the
+      service they are applying for.
+    </para>
+    <para>
+      By default rules for group memberships are taken from config file
+      <filename>/etc/security/group.conf</filename>.
+    </para>
+    <para>
+      This module's usefulness relies on the file-systems
+      accessible to the user. The point being that once granted the
+      membership of a group, the user may attempt to create a
+      <function>setgid</function> binary with a restricted group ownership.
+      Later, when the user is not given membership to this group, they can
+      recover group membership with the precompiled binary. The reason that
+      the file-systems that the user has access to are so significant, is the
+      fact that when a system is mounted <emphasis>nosuid</emphasis> the user
+      is unable to create or execute such a binary file. For this module to
+      provide any level of security, all file-systems that the user has write
+      access to should be mounted <emphasis>nosuid</emphasis>.
+    </para>
+    <para>
+      The pam_group module functions in parallel with the
+      <filename>/etc/group</filename> file. If the user is granted any groups
+      based on the behavior of this module, they are granted
+      <emphasis>in addition</emphasis> to those entries
+      <filename>/etc/group</filename> (or equivalent).
+    </para>
+  </refsect1>
+
+  <refsect1 id="pam_group-options">
+    <title>OPTIONS</title>
+    <para>This module does not recognise any options.</para>
+  </refsect1>
+
+  <refsect1 id="pam_group-types">
+    <title>MODULE TYPES PROVIDED</title>
+    <para>
+      Only the <option>auth</option> module type is provided.
+    </para>
+  </refsect1>
+
+  <refsect1 id="pam_group-return_values">
+    <title>RETURN VALUES</title>
+    <variablelist>
+      <varlistentry>
+        <term>PAM_SUCCESS</term>
+        <listitem>
+           <para>
+             group membership was granted.
+          </para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term>PAM_ABORT</term>
+        <listitem>
+           <para>
+             Not all relevant data could be gotten.
+          </para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term>PAM_BUF_ERR</term>
+        <listitem>
+          <para>
+            Memory buffer error.
+          </para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term>PAM_CRED_ERR</term>
+        <listitem>
+          <para>
+            Group membership was not granted.
+          </para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term>PAM_IGNORE</term>
+        <listitem>
+           <para>
+             <function>pam_sm_authenticate</function> was called which does nothing.
+          </para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term>PAM_USER_UNKNOWN</term>
+        <listitem>
+           <para>
+             The user is not known to the system.
+          </para>
+        </listitem>
+      </varlistentry>
+    </variablelist>
+  </refsect1>
+
+  <refsect1 id="pam_group-files">
+    <title>FILES</title>
+    <variablelist>
+      <varlistentry>
+        <term><filename>/etc/security/group.conf</filename></term>
+        <listitem>
+          <para>Default configuration file</para>
+        </listitem>
+      </varlistentry>
+    </variablelist>
+  </refsect1>
+
+  <refsect1 id="pam_group-see_also">
+    <title>SEE ALSO</title>
+    <para>
+      <citerefentry>
+        <refentrytitle>group.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_group-authors">
+    <title>AUTHORS</title>
+    <para>
+      pam_group was written by Andrew G. Morgan &lt;morgan@kernel.org&gt;.
+    </para>
+  </refsect1>
+</refentry>
diff --git a/modules/pam_group/pam_group.c b/modules/pam_group/pam_group.c
new file mode 100644
index 0000000..8cd178c
--- /dev/null
+++ b/modules/pam_group/pam_group.c
@@ -0,0 +1,823 @@
+/* pam_group module */
+
+/*
+ * Written by Andrew Morgan <morgan@linux.kernel.org> 1996/7/6
+ * Field parsing rewritten by Tomas Mraz <tm@t8m.info>
+ */
+
+#include "config.h"
+
+#include <sys/file.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <time.h>
+#include <syslog.h>
+#include <string.h>
+
+#include <grp.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <netdb.h>
+
+#define PAM_GROUP_BUFLEN        1000
+#define FIELD_SEPARATOR         ';'   /* this is new as of .02 */
+
+#ifndef TRUE
+# define TRUE 1
+#endif
+#ifndef FALSE
+# define FALSE 0
+#endif
+
+typedef enum { AND, OR } operator;
+
+/*
+ * here, we make definitions for the externally accessible functions
+ * in this file (these definitions are required for static modules
+ * but strongly encouraged generally) they are used to instruct the
+ * modules include file to define their prototypes.
+ */
+
+#define PAM_SM_AUTH
+
+#include <security/pam_modules.h>
+#include <security/_pam_macros.h>
+#include <security/pam_modutil.h>
+#include <security/pam_ext.h>
+
+/* --- static functions for checking whether the user should be let in --- */
+
+static char *
+shift_buf(char *mem, int from)
+{
+    char *start = mem;
+    while ((*mem = mem[from]) != '\0')
+	++mem;
+    memset(mem, '\0', PAM_GROUP_BUFLEN - (mem - start));
+    return mem;
+}
+
+static void
+trim_spaces(char *buf, char *from)
+{
+    while (from > buf) {
+	--from;
+	if (*from == ' ')
+	    *from = '\0';
+	else
+	    break;
+    }
+}
+
+#define STATE_NL       0 /* new line starting */
+#define STATE_COMMENT  1 /* inside comment */
+#define STATE_FIELD    2 /* field following */
+#define STATE_EOF      3 /* end of file or error */
+
+static int
+read_field(const pam_handle_t *pamh, int fd, char **buf, int *from, int *state)
+{
+    char *to;
+    char *src;
+    int i;
+    char c;
+    int onspace;
+
+    /* is buf set ? */
+    if (! *buf) {
+	*buf = (char *) calloc(1, PAM_GROUP_BUFLEN+1);
+	if (! *buf) {
+	    pam_syslog(pamh, LOG_CRIT, "out of memory");
+	    D(("no memory"));
+	    *state = STATE_EOF;
+	    return -1;
+	}
+	*from = 0;
+        *state = STATE_NL;
+	fd = open(PAM_GROUP_CONF, O_RDONLY);
+	if (fd < 0) {
+	    pam_syslog(pamh, LOG_ERR, "error opening %s: %m", PAM_GROUP_CONF);
+	    _pam_drop(*buf);
+	    *state = STATE_EOF;
+	    return -1;
+	}
+    }
+
+    if (*from > 0)
+	to = shift_buf(*buf, *from);
+    else
+	to = *buf;
+
+    while (fd != -1 && to - *buf < PAM_GROUP_BUFLEN) {
+	i = pam_modutil_read(fd, to, PAM_GROUP_BUFLEN - (to - *buf));
+	if (i < 0) {
+	    pam_syslog(pamh, LOG_ERR, "error reading %s: %m", PAM_GROUP_CONF);
+	    close(fd);
+	    memset(*buf, 0, PAM_GROUP_BUFLEN);
+	    _pam_drop(*buf);
+	    *state = STATE_EOF;
+	    return -1;
+	} else if (!i) {
+	    close(fd);
+	    fd = -1;          /* end of file reached */
+	}
+
+	to += i;
+    }
+
+    if (to == *buf) {
+	/* nothing previously in buf, nothing read */
+	_pam_drop(*buf);
+	*state = STATE_EOF;
+	return -1;
+    }
+
+    memset(to, '\0', PAM_GROUP_BUFLEN - (to - *buf));
+
+    to = *buf;
+    onspace = 1; /* delete any leading spaces */
+
+    for (src = to; (c=*src) != '\0'; ++src) {
+	if (*state == STATE_COMMENT && c != '\n') {
+		continue;
+	}
+
+	switch (c) {
+	    case '\n':
+		*state = STATE_NL;
+                *to = '\0';
+		*from = (src - *buf) + 1;
+		trim_spaces(*buf, to);
+		return fd;
+
+	    case '\t':
+            case ' ':
+		if (!onspace) {
+		    onspace = 1;
+		    *to++ = ' ';
+		}
+		break;
+
+            case '!':
+		onspace = 1; /* ignore following spaces */
+		*to++ = '!';
+		break;
+
+	    case '#':
+		*state = STATE_COMMENT;
+		break;
+
+	    case FIELD_SEPARATOR:
+		*state = STATE_FIELD;
+                *to = '\0';
+		*from = (src - *buf) + 1;
+		trim_spaces(*buf, to);
+		return fd;
+
+	    case '\\':
+		if (src[1] == '\n') {
+		    ++src; /* skip it */
+		    break;
+		}
+	    default:
+		*to++ = c;
+		onspace = 0;
+	}
+	if (src > to)
+	    *src = '\0'; /* clearing */
+    }
+
+    if (*state != STATE_COMMENT) {
+	*state = STATE_COMMENT;
+	pam_syslog(pamh, LOG_ERR, "field too long - ignored");
+	**buf = '\0';
+    } else {
+	*to = '\0';
+	trim_spaces(*buf, to);
+    }
+
+    *from = 0;
+    return fd;
+}
+
+/* read a member from a field */
+
+static int logic_member(const char *string, int *at)
+{
+     int c,to;
+     int done=0;
+     int token=0;
+
+     to=*at;
+     do {
+	  c = string[to++];
+
+	  switch (c) {
+
+	  case '\0':
+	       --to;
+	       done = 1;
+	       break;
+
+	  case '&':
+	  case '|':
+	  case '!':
+	       if (token) {
+		    --to;
+	       }
+	       done = 1;
+	       break;
+
+	  default:
+	       if (isalpha(c) || c == '*' || isdigit(c) || c == '_'
+		    || c == '-' || c == '.' || c == '/' || c == ':') {
+		    token = 1;
+	       } else if (token) {
+		    --to;
+		    done = 1;
+	       } else {
+		    ++*at;
+	       }
+	  }
+     } while (!done);
+
+     return to - *at;
+}
+
+typedef enum { VAL, OP } expect;
+
+static int
+logic_field (const pam_handle_t *pamh, const void *me,
+             const char *x, int rule,
+             int (*agrees)(const pam_handle_t *pamh, const void *,
+                               const char *, int, int))
+{
+     int left=FALSE, right, not=FALSE;
+     operator oper=OR;
+     int at=0, l;
+     expect next=VAL;
+
+     while ((l = logic_member(x,&at))) {
+	  int c = x[at];
+
+	  if (next == VAL) {
+	       if (c == '!')
+		    not = !not;
+	       else if (isalpha(c) || c == '*' || isdigit(c) || c == '_'
+                    || c == '-' || c == '.' || c == '/' || c == ':') {
+		    right = not ^ agrees(pamh, me, x+at, l, rule);
+		    if (oper == AND)
+			 left &= right;
+		    else
+			 left |= right;
+		    next = OP;
+	       } else {
+		    pam_syslog(pamh, LOG_ERR,
+			       "garbled syntax; expected name (rule #%d)",
+			       rule);
+		    return FALSE;
+	       }
+	  } else {   /* OP */
+	       switch (c) {
+	       case '&':
+		    oper = AND;
+		    break;
+	       case '|':
+		    oper = OR;
+		    break;
+	       default:
+		    pam_syslog(pamh, LOG_ERR,
+			       "garbled syntax; expected & or | (rule #%d)",
+			       rule);
+		    D(("%c at %d",c,at));
+		    return FALSE;
+	       }
+	       next = VAL;
+	  }
+	  at += l;
+     }
+
+     return left;
+}
+
+static int
+is_same (const pam_handle_t *pamh UNUSED,
+         const void *A, const char *b, int len, int rule UNUSED)
+{
+     int i;
+     const char *a;
+
+     a = A;
+     for (i=0; len > 0; ++i, --len) {
+	  if (b[i] != a[i]) {
+	       if (b[i++] == '*') {
+		    return (!--len || !strncmp(b+i,a+strlen(a)-len,len));
+	       } else
+		    return FALSE;
+	  }
+     }
+
+     /* Ok, we know that b is a substring from A and does not contain
+        wildcards, but now the length of both strings must be the same,
+        too. In this case it means, a[i] has to be the end of the string. */
+     if (a[i] != '\0')
+          return FALSE;
+
+     return ( !len );
+}
+
+typedef struct {
+     int day;             /* array of 7 bits, one set for today */
+     int minute;            /* integer, hour*100+minute for now */
+} TIME;
+
+static struct day {
+     const char *d;
+     int bit;
+} const days[11] = {
+     { "su", 01 },
+     { "mo", 02 },
+     { "tu", 04 },
+     { "we", 010 },
+     { "th", 020 },
+     { "fr", 040 },
+     { "sa", 0100 },
+     { "wk", 076 },
+     { "wd", 0101 },
+     { "al", 0177 },
+     { NULL, 0 }
+};
+
+static TIME time_now(void)
+{
+     struct tm *local;
+     time_t the_time;
+     TIME this;
+
+     the_time = time((time_t *)0);                /* get the current time */
+     local = localtime(&the_time);
+     this.day = days[local->tm_wday].bit;
+     this.minute = local->tm_hour*100 + local->tm_min;
+
+     D(("day: 0%o, time: %.4d", this.day, this.minute));
+     return this;
+}
+
+/* take the current date and see if the range "date" passes it */
+static int
+check_time (const pam_handle_t *pamh, const void *AT,
+            const char *times, int len, int rule)
+{
+     int not,pass;
+     int marked_day, time_start, time_end;
+     const TIME *at;
+     int i,j=0;
+
+     at = AT;
+     D(("checking: 0%o/%.4d vs. %s", at->day, at->minute, times));
+
+     if (times == NULL) {
+	  /* this should not happen */
+	  pam_syslog(pamh, LOG_CRIT, "internal error in file %s at line %d",
+		     __FILE__, __LINE__);
+	  return FALSE;
+     }
+
+     if (times[j] == '!') {
+	  ++j;
+	  not = TRUE;
+     } else {
+	  not = FALSE;
+     }
+
+     for (marked_day = 0; len > 0 && isalpha(times[j]); --len) {
+	  int this_day=-1;
+
+	  D(("%c%c ?", times[j], times[j+1]));
+	  for (i=0; days[i].d != NULL; ++i) {
+	       if (tolower(times[j]) == days[i].d[0]
+		   && tolower(times[j+1]) == days[i].d[1] ) {
+		    this_day = days[i].bit;
+		    break;
+	       }
+	  }
+	  j += 2;
+	  if (this_day == -1) {
+	       pam_syslog(pamh, LOG_ERR, "bad day specified (rule #%d)", rule);
+	       return FALSE;
+	  }
+	  marked_day ^= this_day;
+     }
+     if (marked_day == 0) {
+	  pam_syslog(pamh, LOG_ERR, "no day specified");
+	  return FALSE;
+     }
+     D(("day range = 0%o", marked_day));
+
+     time_start = 0;
+     for (i=0; len > 0 && i < 4 && isdigit(times[i+j]); ++i, --len) {
+	  time_start *= 10;
+	  time_start += times[i+j]-'0';       /* is this portable? */
+     }
+     j += i;
+
+     if (times[j] == '-') {
+	  time_end = 0;
+	  for (i=1; len > 0 && i < 5 && isdigit(times[i+j]); ++i, --len) {
+	       time_end *= 10;
+	       time_end += times[i+j]-'0';    /* is this portable? */
+	  }
+	  j += i;
+     } else
+	  time_end = -1;
+
+     D(("i=%d, time_end=%d, times[j]='%c'", i, time_end, times[j]));
+     if (i != 5 || time_end == -1) {
+	  pam_syslog(pamh, LOG_ERR, "no/bad times specified (rule #%d)", rule);
+	  return TRUE;
+     }
+     D(("times(%d to %d)", time_start,time_end));
+     D(("marked_day = 0%o", marked_day));
+
+     /* compare with the actual time now */
+
+     pass = FALSE;
+     if (time_start < time_end) {    /* start < end ? --> same day */
+	  if ((at->day & marked_day) && (at->minute >= time_start)
+	      && (at->minute < time_end)) {
+	       D(("time is listed"));
+	       pass = TRUE;
+	  }
+     } else {                                    /* spans two days */
+	  if ((at->day & marked_day) && (at->minute >= time_start)) {
+	       D(("caught on first day"));
+	       pass = TRUE;
+	  } else {
+	       marked_day <<= 1;
+	       marked_day |= (marked_day & 0200) ? 1:0;
+	       D(("next day = 0%o", marked_day));
+	       if ((at->day & marked_day) && (at->minute <= time_end)) {
+		    D(("caught on second day"));
+		    pass = TRUE;
+	       }
+	  }
+     }
+
+     return (not ^ pass);
+}
+
+static int find_member(const char *string, int *at)
+{
+     int c,to;
+     int done=0;
+     int token=0;
+
+     to=*at;
+     do {
+          c = string[to++];
+
+          switch (c) {
+
+          case '\0':
+               --to;
+               done = 1;
+               break;
+
+          case '&':
+          case '|':
+	  case '!':
+               if (token) {
+                    --to;
+               }
+               done = 1;
+               break;
+
+          default:
+               if (isalpha(c) || isdigit(c) || c == '_' || c == '*'
+                    || c == '-') {
+                    token = 1;
+               } else if (token) {
+                    --to;
+                    done = 1;
+               } else {
+                    ++*at;
+               }
+          }
+     } while (!done);
+
+     return to - *at;
+}
+
+#define GROUP_BLK 10
+#define blk_size(len) (((len-1 + GROUP_BLK)/GROUP_BLK)*GROUP_BLK)
+
+static int mkgrplist(pam_handle_t *pamh, char *buf, gid_t **list, int len)
+{
+     int l,at=0;
+     int blks;
+
+     blks = blk_size(len);
+     D(("cf. blks=%d and len=%d", blks,len));
+
+     while ((l = find_member(buf,&at))) {
+	  int edge;
+
+	  if (len >= blks) {
+	       gid_t *tmp;
+
+	       D(("allocating new block"));
+	       tmp = (gid_t *) realloc((*list)
+				       , sizeof(gid_t) * (blks += GROUP_BLK));
+	       if (tmp != NULL) {
+		    (*list) = tmp;
+	       } else {
+		    pam_syslog(pamh, LOG_ERR, "out of memory for group list");
+		    free(*list);
+		    (*list) = NULL;
+		    return -1;
+	       }
+	  }
+
+	  /* '\0' terminate the entry */
+
+	  edge = (buf[at+l]) ? 1:0;
+	  buf[at+l] = '\0';
+	  D(("found group: %s",buf+at));
+
+	  /* this is where we convert a group name to a gid_t */
+	  {
+	      const struct group *grp;
+
+	      grp = pam_modutil_getgrnam(pamh, buf+at);
+	      if (grp == NULL) {
+		  pam_syslog(pamh, LOG_ERR, "bad group: %s", buf+at);
+	      } else {
+		  D(("group %s exists", buf+at));
+		  (*list)[len++] = grp->gr_gid;
+	      }
+	  }
+
+	  /* next entry along */
+
+	  at += l + edge;
+     }
+     D(("returning with [%p/len=%d]->%p",list,len,*list));
+     return len;
+}
+
+
+static int check_account(pam_handle_t *pamh, const char *service,
+			 const char *tty, const char *user)
+{
+    int from=0, state=STATE_NL, fd=-1;
+    char *buffer=NULL;
+    int count=0;
+    TIME here_and_now;
+    int retval=PAM_SUCCESS;
+    gid_t *grps;
+    int no_grps;
+
+    /*
+     * first we get the current list of groups - the application
+     * will have previously done an initgroups(), or equivalent.
+     */
+
+    D(("counting supplementary groups"));
+    no_grps = getgroups(0, NULL);      /* find the current number of groups */
+    if (no_grps > 0) {
+	grps = calloc( blk_size(no_grps) , sizeof(gid_t) );
+	D(("copying current list into grps [%d big]",blk_size(no_grps)));
+	if (getgroups(no_grps, grps) < 0) {
+	    D(("getgroups call failed"));
+	    no_grps = 0;
+	    _pam_drop(grps);
+	}
+#ifdef PAM_DEBUG
+	{
+	    int z;
+	    for (z=0; z<no_grps; ++z) {
+		D(("gid[%d]=%d", z, grps[z]));
+	    }
+	}
+#endif
+    } else {
+	D(("no supplementary groups known"));
+	no_grps = 0;
+	grps = NULL;
+    }
+
+    here_and_now = time_now();                         /* find current time */
+
+    /* parse the rules in the configuration file */
+    do {
+	int good=TRUE;
+
+	/* here we get the service name field */
+
+	fd = read_field(pamh, fd, &buffer, &from, &state);
+	if (!buffer || !buffer[0]) {
+	    /* empty line .. ? */
+	    continue;
+	}
+	++count;
+	D(("working on rule #%d",count));
+
+	if (state != STATE_FIELD) {
+	    pam_syslog(pamh, LOG_ERR,
+		       "%s: malformed rule #%d", PAM_GROUP_CONF, count);
+	    continue;
+	}
+
+	good = logic_field(pamh,service, buffer, count, is_same);
+	D(("with service: %s", good ? "passes":"fails" ));
+
+	/* here we get the terminal name field */
+
+	fd = read_field(pamh, fd, &buffer, &from, &state);
+	if (state != STATE_FIELD) {
+	    pam_syslog(pamh, LOG_ERR,
+		       "%s: malformed rule #%d", PAM_GROUP_CONF, count);
+	    continue;
+	}
+	good &= logic_field(pamh,tty, buffer, count, is_same);
+	D(("with tty: %s", good ? "passes":"fails" ));
+
+	/* here we get the username field */
+
+	fd = read_field(pamh, fd, &buffer, &from, &state);
+	if (state != STATE_FIELD) {
+	    pam_syslog(pamh, LOG_ERR,
+		       "%s: malformed rule #%d", PAM_GROUP_CONF, count);
+	    continue;
+	}
+	/* If buffer starts with @, we are using netgroups */
+	if (buffer[0] == '@')
+#ifdef HAVE_INNETGR
+	  good &= innetgr (&buffer[1], NULL, user, NULL);
+#else
+	  pam_syslog (pamh, LOG_ERR, "pam_group does not have netgroup support");
+#endif
+	/* otherwise, if the buffer starts with %, it's a UNIX group */
+	else if (buffer[0] == '%')
+          good &= pam_modutil_user_in_group_nam_nam(pamh, user, &buffer[1]);
+	else
+	  good &= logic_field(pamh,user, buffer, count, is_same);
+	D(("with user: %s", good ? "passes":"fails" ));
+
+	/* here we get the time field */
+
+	fd = read_field(pamh, fd, &buffer, &from, &state);
+	if (state != STATE_FIELD) {
+	    pam_syslog(pamh, LOG_ERR,
+		       "%s: malformed rule #%d", PAM_GROUP_CONF, count);
+	    continue;
+	}
+
+	good &= logic_field(pamh,&here_and_now, buffer, count, check_time);
+	D(("with time: %s", good ? "passes":"fails" ));
+
+	fd = read_field(pamh, fd, &buffer, &from, &state);
+	if (state == STATE_FIELD) {
+	    pam_syslog(pamh, LOG_ERR,
+		       "%s: poorly terminated rule #%d", PAM_GROUP_CONF, count);
+	    continue;
+	}
+
+	/*
+	 * so we have a list of groups, we need to turn it into
+	 * something to send to setgroups(2)
+	 */
+
+	if (good) {
+	    D(("adding %s to gid list", buffer));
+	    good = mkgrplist(pamh, buffer, &grps, no_grps);
+	    if (good < 0) {
+		no_grps = 0;
+	    } else {
+		no_grps = good;
+	    }
+	}
+
+	if (good > 0) {
+	    D(("rule #%d passed, added %d groups", count, good));
+	} else if (good < 0) {
+	    retval = PAM_BUF_ERR;
+	} else {
+	    D(("rule #%d failed", count));
+	}
+
+    } while (state != STATE_EOF);
+
+    /* now set the groups for the user */
+
+    if (no_grps > 0) {
+#ifdef PAM_DEBUG
+	int err;
+#endif
+	D(("trying to set %d groups", no_grps));
+#ifdef PAM_DEBUG
+	for (err=0; err<no_grps; ++err) {
+	    D(("gid[%d]=%d", err, grps[err]));
+	}
+#endif
+	if (setgroups(no_grps, grps) != 0) {
+	    D(("but couldn't set groups %m"));
+	    pam_syslog(pamh, LOG_ERR,
+		       "unable to set the group membership for user: %m");
+	    retval = PAM_CRED_ERR;
+	}
+    }
+
+    if (grps) {                                          /* tidy up */
+	memset(grps, 0, sizeof(gid_t) * blk_size(no_grps));
+	_pam_drop(grps);
+	no_grps = 0;
+    }
+
+    return retval;
+}
+
+/* --- public authentication management functions --- */
+
+int
+pam_sm_authenticate (pam_handle_t *pamh UNUSED, int flags UNUSED,
+		     int argc UNUSED, const char **argv UNUSED)
+{
+    return PAM_IGNORE;
+}
+
+int
+pam_sm_setcred (pam_handle_t *pamh, int flags,
+		int argc UNUSED, const char **argv UNUSED)
+{
+    const void *service=NULL, *void_tty=NULL;
+    const char *user=NULL;
+    const char *tty;
+    int retval;
+    unsigned setting;
+
+    /* only interested in establishing credentials */
+
+    setting = flags;
+    if (!(setting & (PAM_ESTABLISH_CRED | PAM_REINITIALIZE_CRED))) {
+	D(("ignoring call - not for establishing credentials"));
+	return PAM_SUCCESS;            /* don't fail because of this */
+    }
+
+    /* set service name */
+
+    if (pam_get_item(pamh, PAM_SERVICE, &service)
+	!= PAM_SUCCESS || service == NULL) {
+	pam_syslog(pamh, LOG_ERR, "cannot find the current service name");
+	return PAM_ABORT;
+    }
+
+    /* set username */
+
+    if (pam_get_user(pamh, &user, NULL) != PAM_SUCCESS || user == NULL
+	|| *user == '\0') {
+	pam_syslog(pamh, LOG_ERR, "cannot determine the user's name");
+	return PAM_USER_UNKNOWN;
+    }
+
+    /* set tty name */
+
+    if (pam_get_item(pamh, PAM_TTY, &void_tty) != PAM_SUCCESS
+	|| void_tty == NULL) {
+	D(("PAM_TTY not set, probing stdin"));
+	tty = ttyname(STDIN_FILENO);
+	if (tty == NULL) {
+	    tty = "";
+	}
+	if (pam_set_item(pamh, PAM_TTY, tty) != PAM_SUCCESS) {
+	    pam_syslog(pamh, LOG_ERR, "couldn't set tty name");
+	    return PAM_ABORT;
+	}
+    }
+    else
+      tty = (const char *) void_tty;
+
+    if (tty[0] == '/') {   /* full path */
+	const char *t;
+        tty++;
+        if ((t = strchr(tty, '/')) != NULL) {
+	    tty = t + 1;
+	}
+    }
+
+    /* good, now we have the service name, the user and the terminal name */
+
+    D(("service=%s", service));
+    D(("user=%s", user));
+    D(("tty=%s", tty));
+
+    retval = check_account(pamh,service,tty,user);          /* get groups */
+
+    return retval;
+}
+
+/* end of module definition */
diff --git a/modules/pam_group/tst-pam_group b/modules/pam_group/tst-pam_group
new file mode 100755
index 0000000..29f7ba0
--- /dev/null
+++ b/modules/pam_group/tst-pam_group
@@ -0,0 +1,2 @@
+#!/bin/sh
+../../tests/tst-dlopen .libs/pam_group.so