unix-privesc-check/lib/misc/shadow

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#!/bin/sh
# $Revision: 315 $
#
# 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, AIX
if [ -z "${shadowincluded}" ]
then
shadowincluded=1
. lib/misc/file
. lib/misc/validate
shadow_list () {
if [ "`uname`" = "AIX" ]
then
grep "^[A-Za-z0-9]:$" "/etc/security/passwd" | sed "s/:$//g" | while read username
do
printf -- "${username}\n"
done
else
oldifs="${IFS}"
IFS=":"
egrep -v "^#|^$" "/etc/shadow" | while read username _
do
IFS="${oldifs}"
printf -- "${username}\n"
IFS=":"
done
IFS="${oldifs}"
fi
}
shadow_show_hash () {
pattern="${1}"
[ "`validate_is_string \"${pattern}\"`" ] || false
if [ "`uname`" = "AIX" ]
then
passwordflag=0
while read line
do
if [ "${passwordflag}" -eq 1 ]
then
if [ -n "`printf -- \"${line}\" | grep \"password = \"`" ]
then
passwordflag=0
printf -- "${line}\n" | while read _ _ hash
do
hash="`printf \"${hash}\" | sed \"s/!/\!/g\"`"
printf -- "${hash}\n"
done
fi
else
if [ "${line}" = "${pattern}:" ]
then
passwordflag=1
fi
fi
done <"/etc/security/passwd"
else
oldifs="${IFS}"
IFS=":"
egrep -v "^#|^$" "/etc/shadow" | while read username hash userid groupid gecos homefilename shellfilename
do
IFS="${oldifs}"
if [ "${username}" = "${pattern}" ]
then
hash="`printf \"${hash}\" | sed \"s/!/\!/g\"`"
printf -- "${hash}\n"
fi
IFS=":"
done
IFS="${oldifs}"
fi
}
shadow_file_check () {
if [ "`uname`" = "AIX" -a "`file_is_readable_file \"/etc/security/passwd\"`" -eq 1 ]
then
printf -- "1\n"
elif [ "`file_is_readable_file \"/etc/shadow\"`" -eq 1 ]
then
printf -- "1\n"
else
printf -- "0\n"
fi
}
fi