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hashboot
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More MBR stuff

This commit is contained in:
tastytea 2015-09-29 19:31:20 +02:00
parent 80e6f27157
commit 6ebbd9ee69
1 changed files with 8 additions and 7 deletions
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15
hashboot.sh
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@ -9,7 +9,7 @@ PATH="/bin:/usr/bin:/sbin:/usr/sbin"
DIGEST_FILE="/var/lib/hashboot.digest"
LOG_FILE="/tmp/hashboot.log"
MBR_FILE="/var/lib/mbr.digest"
MBR_DEVICE="/dev/sda"
MBR_TMP="/tmp/mbr"
BACKUP_FILE="/var/cache/boot-backup.tar.gz"
HASHER=""
@ -60,9 +60,10 @@ if [ "${1}" == "index" ]
then
#Write header
echo "#hashboot ${VERSION} - Algorithm: $(basename ${HASHER})" > ${DIGEST_FILE}
#Write MBR of MBR_DEVICE to ${DIGEST_FILE}
dd if=/dev/sda of=${MBR_TMP} bs=1M count=1 status=noxfer || die 8
#Write hashes of all regular files to ${DIGEST_FILE}
err=$(dd if=/dev/sda of=${MBR_TMP} bs=2M count=1 status=noxfer 2>&1) || die 8
${HASHER} ${MBR_TMP} > ${MBR_FILE}
${HASHER} ${MBR_TMP} > ${DIGEST_FILE}
find /boot -type f -exec ${HASHER} --binary {} >> ${DIGEST_FILE} +
if [ $? == 0 ]
then
@ -72,7 +73,7 @@ then
die 7
fi
#Backup of good files
tar -czpPf ${BACKUP_FILE} /boot ${MBR_TMP} ${MBR_FILE} ${DIGEST_FILE}
tar -czpPf ${BACKUP_FILE} ${MBR_TMP} /boot ${DIGEST_FILE}
if [ $? == 0 ]
then
echo "Backup written to ${BACKUP_FILE}"
@ -83,15 +84,15 @@ then
elif [ "${1}" == "check" ]
then
COUNTER=0
err=$(dd if=/dev/sda of=${MBR_TMP} bs=2M count=1 status=noxfer 2>&1) || die 8
if $(${HASHER} --check --warn --quiet --strict ${MBR_FILE} > ${LOG_FILE})
dd if=/dev/sda of=${MBR_TMP} bs=1M count=1 status=noxfer || die 8
if $(grep ${MBR_TMP} ${DIGEST_FILE} | ${HASHER} --check --warn --quiet --strict > ${LOG_FILE})
then
echo "MBR ok"
else
echo " !! TIME TO PANIK: MBR WAS MODIFIED !!"
COUNTER=$((COUNTER + 1))
fi
if $(${HASHER} --check --warn --quiet --strict ${DIGEST_FILE} >> ${LOG_FILE})
if $(grep -v ${MBR_TMP} ${DIGEST_FILE} | ${HASHER} --check --warn --quiet --strict >> ${LOG_FILE})
then
echo "/boot ok"
die 0