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#!/bin/sh
#
# tiger - A UN*X security checking system
# Copyright (C) 2003 Javier Fernandez-Sanguino
#
# 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, 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.
#
# Please see the file `COPYING' for the complete copyright notice.
#
# check_umask - 04/15/2003
#
# Check for umask setting in configuration files. This check has been
# separated from check_logfiles since it's a broader check. The command
# requirements have been modified to adjust to what it's really needed.
#
# 01/13/2004 - jfs - Fixed syntax error in the previous patch
# 10/19/2003 - jfs - Applied patch from Ryan Bradetich adding 077 umask
# to the valid list.
# 08/09/2003 - jfs - Fixed the script so it does not grok if no valid
# umask entries are available
# 05/01/2003 - jfs - Fixed dependancies
#
#-----------------------------------------------------------------------------
# TODO
# The script will not work properly if the 'umask' string is present
# in the script but it's not a valid call to the umask setting.
# It will not work properly either if more than 3 occurances of umask are
# present.
#
#-----------------------------------------------------------------------------
#
TigerInstallDir="."
#
# Set default base directory.
# Order or preference:
# -B option
# TIGERHOMEDIR environment variable
# TigerInstallDir installed location
#
basedir=${TIGERHOMEDIR:=$TigerInstallDir}
for parm
do
case $parm in
-B) basedir=$2; break;;
esac
done
#
# Verify that a config file exists there, and if it does
# source it.
#
[ ! -r $basedir/config ] && {
echo "--ERROR-- [init002e] No 'config' file in \`$basedir'."
exit 1
}
. $basedir/config
. $BASEDIR/initdefs
#
# If run in test mode (-t) this will verify that all required
# elements are set.
#
[ "$Tiger_TESTMODE" = 'Y' ] && {
haveallcmds TAIL SED HEAD EXPAND GREP WC CUT || exit 1
haveallfiles BASEDIR WORKDIR || exit 1
haveallvars TESTLINK HOSTNAME
echo "--CONFIG-- [init003c] $0: Configuration ok..."
exit 0
}
#------------------------------------------------------------------------
haveallcmds TAIL SED HEAD EXPAND GREP WC CUT || exit 1
haveallfiles BASEDIR WORKDIR || exit 1
#####
# Check to ensure that the umask is set correctly
#####
echo
echo "# Checking for correct umask settings..."
for file in '/etc/profile' '/etc/csh.login' '/etc/bashrc'
do
[ -r $file ] && {
Occurance=`$GREP umask $file | $WC -l`
if [ $Occurance = 0 ]; then
#echo "No umask entry"
message WARN misc021w "" "There are no umask entries in $file"
elif [ $Occurance = 1 ]; then
UMASK1=`$GREP umask $file \
| $EXPAND \
| $SED -e "s/^.*umask//"\
| $CUT -d" " -f2`
if [ "$UMASK1" != "" ] ; then
[ $UMASK1 != 002 -a $UMASK1 != 022 -a $UMASK1 != 027 -a $UMASK1 != 077 ] &&
#echo "The umask setting in $file is insecure"
message FAIL misc022f '' "The umask setting in $file is insecure"
else
message WARN misc021w "" "There are no valid umask entries in $file"
fi
elif [ $Occurance = 2 ]; then
UMASK1=`$GREP umask $file \
| $EXPAND \
| $HEAD -n 1 \
| $SED -e "s/^.*umask//" \
| $CUT -d" " -f2`
UMASK2=`$GREP umask $file \
| $EXPAND \
| $TAIL -n 1 \
| $SED -e "s/^.*umask//" \
| $CUT -d" " -f2`
[ "$UMASK1" != "" -a "$UMASK2" != "" ] && \
[ $UMASK1 != 002 -a $UMASK1 != 022 -a $UMASK1 != 027 -a $UMASK1 != 077 -o $UMASK2 != 002 -a $UMASK2 != 022 -a $UMASK2 != 027 -a $UMASK2 != 077 ] &&
#echo "The umask setting in $file is insecure"
message FAIL misc022f '' "The umask setting in $file is insecure"
else
#echo "There are > 2 umask entries in the config file $file"
message WARN misc023w '' "More than 2 umask entries in $file"
fi
}
done
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