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hashboot
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Fix bug where config file was not read on check

This commit is contained in:
tastytea 2015-09-30 02:16:59 +02:00
parent f846a6155e
commit f4f97d6f74
1 changed files with 21 additions and 15 deletions
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36
hashboot.sh
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@ -4,12 +4,12 @@
#3 = checksum mbr/boot mismatch, 4 = not root, 5 = no hasher found, 6 = wrong usage,
#7 = write error, 8 = dd error, 9 config file error
VERSION="0.7.3"
VERSION="0.7.4"
PATH="/bin:/usr/bin:/sbin:/usr/sbin:${PATH}"
DIGEST_FILE="/var/lib/hashboot.digest"
LOG_FILE="/tmp/hashboot.log"
MBR_DEVICE="/dev/sda"
MBR_DEVICE=""
MBR_TMP="/tmp/mbr"
BACKUP_FILE="/var/cache/boot-backup.tar.gz"
HASHER=""
@ -29,6 +29,23 @@ die ()
exit ${1}
}
read_config ()
{
#Look for config file and set ${MBR_DEVICE}.
if [ -f ${CONFIG_FILE} ]
then
MBR_DEVICE=$(grep ^mbr_device ${CONFIG_FILE} | awk '{print $3}')
[ $? != 0 ] && die 9 "Error reading config file"
#If not found, create one and ask for ${MBR_DEVICE}
else
echo -n "Which device contains the MBR? [/dev/sda] "
read -r MBR_DEVICE
[ -z "${MBR_DEVICE}" ] && MBR_DEVICE="/dev/sda"
echo "#Device with the MBR on it" > ${CONFIG_FILE}
echo "mbr_device = ${MBR_DEVICE}" >> ${CONFIG_FILE}
fi
}
#If we're not root: exit
if [ ${UID} -ne 0 ]
then
@ -56,19 +73,7 @@ then
#If we found no hasher: exit
[ -z "${HASHER}" ] && die 5 "No hash calculator found"
#Look for config file and set ${MBR_DEVICE}.
if [ -f ${CONFIG_FILE} ]
then
MBR_DEVICE=$(grep ^mbr_device ${CONFIG_FILE} | awk '{print $3}')
[ $? != 0 ] && die 9 "Error reading config file"
#If not found, create one and ask for ${MBR_DEVICE}
else
echo -n "Which device contains the MBR? [/dev/sda] "
read -r MBR_DEVICE
[ -z "${MBR_DEVICE}" ] && MBR_DEVICE="/dev/sda"
echo "#Device with the MBR on it" > ${CONFIG_FILE}
echo "mbr_device = ${MBR_DEVICE}" >> ${CONFIG_FILE}
fi
read_config
#Write header
echo "#hashboot ${VERSION} - Algorithm: $(basename ${HASHER})" > ${DIGEST_FILE}
@ -96,6 +101,7 @@ elif [ "${1}" == "check" ]
then
COUNTER=0
HASHER=$(head -n1 ${DIGEST_FILE} | awk '{print $5}')
read_config
dd if=${MBR_DEVICE} of=${MBR_TMP} bs=1M count=1 status=noxfer || die 8
if ! $(grep ${MBR_TMP} ${DIGEST_FILE} | ${HASHER} --check --warn --quiet --strict > ${LOG_FILE})