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|
#!/bin/sh
#
# tiger - A UN*X security checking system
# Copyright (C) 1993 Douglas Lee Schales, David K. Hess, David R. Safford
#
# Please see the file `COPYING' for the complete copyright notice.
#
# check_signatures - 06/14/93
#
# 04/28/93 dls Added '-L' option to 'ls' so that we get the permissions
# from the file instead of the symbolic link.
#
#-----------------------------------------------------------------------------
#
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 AWK CAT FMT GREP LS RM SED SORT || exit 1
haveallfiles BASEDIR WORKDIR SIGNATURE_FILE || exit 1
echo "--CONFIG-- [init003c] $0: Configuration ok..."
exit 0
}
#------------------------------------------------------------------------
echo
echo "# Performing signature check of system binaries..."
haveallcmds AWK CAT FMT GREP LS RM SED SORT SNEFRU || exit 1
haveallfiles BASEDIR SIGNATURE_FILE WORKDIR || exit 1
$SED -e '/^#/d' -e '/^[ ]*$/d' $SIGNATURE_FILE |
$AWK '{print $3}' |
$SORT -u |
while read file
do
if [ -r $file ]; then
$GREP -v '^#' $SIGNATURE_FILE |
$GREP "[ ]$file[ ]" | {
located=0
versions=""
while read flag msgid fl p1 p2 p3 p4 p5 p6 p7 p8 comment
do
loc_signature=
case "$p1$p2$p3$p4$p5$p6$p7$p8" in
*[!0-9a-f]*) {
std_signature="$p1"
comment="$p2 $p3 $p4 $p5 $p6 $p7 $p8 $comment"
[ -n "$MD5" ] && loc_signature="`$MD5 < $file`"
}
;;
*) {
std_signature=" $p1 $p2 $p3 $p4 $p5 $p6 $p7 $p8"
[ -n "$SNEFRU" ] && loc_signature="`$SNEFRU < $file`"
}
;;
esac
[ -n "$loc_signature" ] && {
case $flag in
Y)
versions="$versions>>>>>> $comment
"
[ "$loc_signature" = "$std_signature" ] && located=1;;
N)
[ "$loc_signature" = "$std_signature" ] && {
perm="`$LS $LSLINK -l $file | $AWK '{print $1}'`"
message ALERT $msgid "" "Binary $file ($perm) $comment."
located=1
}
;;
O)
versions="$versions>>>>>> $comment
"
perm="`$LS -l $file | $AWK '{print $1}'`"
[ "$loc_signature" = "$std_signature" ] && {
message WARN $msgid "" "$file ($perm) is from $comment"
located=1
}
;;
esac
}
[ "$located" = 1 ] && break
done
[ "$located" = "0" -a -n "$versions" ] && {
perm="`$LS -l $file | $AWK '{print $1}'`"
message WARN sig004w "$versions" "None of the following versions of $file ($perm) matched the $file on this machine."
}
}
elif [ -f $file ]; then
message ERROR sig005e "" "Unable to read binary $file. Can not perform signature check."
fi
done |
$OUTPUTMETHOD
#
exit 0
#
exit 0
#
exit 0
|
