unix-privesc-check/lib/misc/passwd

#!/bin/sh
# $Revision: 278 $
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#
# (c) Tim Brown, 2012
# <mailto:timb@nth-dimension.org.uk>
# <http://www.nth-dimension.org.uk/> / <http://www.machine.org.uk/>
#
# Supports: Linux

if [ -z "${passwdincluded}" ]
then

passwdincluded=1

. lib/misc/validate

passwd_list () {
	oldifs="${IFS}"
	IFS=":"
	egrep -v "^#|^$" "/etc/passwd" | while read username hash userid groupid gecos homefilename shellfilename
	do
		IFS="${oldifs}"
		printf -- "${username}\n"
		IFS=":"
	done
	IFS="${oldifs}"
}

passwd_show_hash () {
	pattern="${1}"
	[ "`validate_is_string \"${pattern}\"`" ] || false
	oldifs="${IFS}"
	IFS=":"
	egrep -v "^#|^$" "/etc/passwd" | while read username hash userid groupid gecos homefilename shellfilename
	do
		hash="`printf \"${hash}\" | sed \"s/\\\!/\\\\\!/g\"`"
		IFS="${oldifs}"
		if [ "${username}" = "${pattern}" ]
		then
			printf -- "${hash}\n"
		fi
		IFS=":"
	done
	IFS="${oldifs}"
}

passwd_show_homedir () {
	pattern="${1}"
	[ "`validate_is_string \"${pattern}\"`" ] || false
	oldifs="${IFS}"
	IFS=":"
	egrep -v "^#|^$" "/etc/passwd" | while read username hash userid groupid gecos homefilename shellfilename
	do
		IFS="${oldifs}"
		if [ "${username}" = "${pattern}" ]
		then
			printf -- "${homefilename}\n"
		fi
		IFS=":"
	done
	IFS="${oldifs}"
}

fi