208 lines
8.3 KiB
Plaintext
208 lines
8.3 KiB
Plaintext
|
#!/usr/bin/ash
|
||
|
|
|
||
|
|
dvorak() {
|
||
|
|
qwerty="-=qwertyuiop[]asdfghjkl;zxcvbnm,./_+QWERTYUIOP{}ASDFGHJKL:\"ZXCVBNM<>?'"
|
||
|
|
dvorak="[]',.pyfgcrl/=aoeuidhtns;qjkxbmwvz{}\"<>PYFGCRL?+AOEUIDHTNS_:QJKXBMWVZ-"
|
||
|
|
tr -- "$qwerty" "$dvorak"
|
||
|
|
}
|
||
|
|
|
||
|
|
run_hook() {
|
||
|
|
modprobe -a -q dm-crypt >/dev/null 2>&1
|
||
|
|
[ "${quiet}" = "y" ] && CSQUIET=">/dev/null"
|
||
|
|
|
||
|
|
# Get keyfile if specified
|
||
|
|
ckeyfile="/crypto_keyfile.bin"
|
||
|
|
if [ -n "$cryptkey" ]; then
|
||
|
|
IFS=: read ckdev ckarg1 ckarg2 <<EOF
|
||
|
|
$cryptkey
|
||
|
|
EOF
|
||
|
|
|
||
|
|
if [ "$ckdev" = "rootfs" ]; then
|
||
|
|
ckeyfile=$ckarg1
|
||
|
|
elif resolved=$(resolve_device "${ckdev}" ${rootdelay}); then
|
||
|
|
case ${ckarg1} in
|
||
|
|
*[!0-9]*)
|
||
|
|
# Use a file on the device
|
||
|
|
# ckarg1 is not numeric: ckarg1=filesystem, ckarg2=path
|
||
|
|
mkdir /ckey
|
||
|
|
mount -r -t "$ckarg1" "$resolved" /ckey
|
||
|
|
dd if="/ckey/$ckarg2" of="$ckeyfile" >/dev/null 2>&1
|
||
|
|
umount /ckey
|
||
|
|
;;
|
||
|
|
*)
|
||
|
|
# Read raw data from the block device
|
||
|
|
# ckarg1 is numeric: ckarg1=offset, ckarg2=length
|
||
|
|
dd if="$resolved" of="$ckeyfile" bs=1 skip="$ckarg1" count="$ckarg2" >/dev/null 2>&1
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
fi
|
||
|
|
[ ! -f ${ckeyfile} ] && echo "Keyfile could not be opened. Reverting to passphrase."
|
||
|
|
fi
|
||
|
|
|
||
|
|
if [ -n "${cryptdevice}" ]; then
|
||
|
|
DEPRECATED_CRYPT=0
|
||
|
|
IFS=: read cryptdev cryptname cryptoptions <<EOF
|
||
|
|
$cryptdevice
|
||
|
|
EOF
|
||
|
|
else
|
||
|
|
DEPRECATED_CRYPT=1
|
||
|
|
cryptdev="${root}"
|
||
|
|
cryptname="root"
|
||
|
|
fi
|
||
|
|
|
||
|
|
# This may happen if third party hooks do the crypt setup
|
||
|
|
if [ -b "/dev/mapper/${cryptname}" ]; then
|
||
|
|
echo "Device ${cryptname} already exists, not doing any crypt setup."
|
||
|
|
return 0
|
||
|
|
fi
|
||
|
|
|
||
|
|
warn_deprecated() {
|
||
|
|
echo "The syntax 'root=${root}' where '${root}' is an encrypted volume is deprecated"
|
||
|
|
echo "Use 'cryptdevice=${root}:root root=/dev/mapper/root' instead."
|
||
|
|
}
|
||
|
|
|
||
|
|
set -f
|
||
|
|
OLDIFS="$IFS"; IFS=,
|
||
|
|
for cryptopt in ${cryptoptions}; do
|
||
|
|
case ${cryptopt} in
|
||
|
|
read-only|ro)
|
||
|
|
cryptargs="${cryptargs} --readonly"
|
||
|
|
;;
|
||
|
|
allow-discards|discard)
|
||
|
|
cryptargs="${cryptargs} --allow-discards"
|
||
|
|
;;
|
||
|
|
no-read-workqueue|perf-no_read_workqueue)
|
||
|
|
cryptargs="${cryptargs} --perf-no_read_workqueue"
|
||
|
|
;;
|
||
|
|
no-write-workqueue|perf-no_write_workqueue)
|
||
|
|
cryptargs="${cryptargs} --perf-no_write_workqueue"
|
||
|
|
;;
|
||
|
|
sector-size=*)
|
||
|
|
cryptargs="${cryptargs} --sector-size ${cryptopt#*=}"
|
||
|
|
;;
|
||
|
|
*)
|
||
|
|
echo "Encryption option '${cryptopt}' not known, ignoring." >&2
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
done
|
||
|
|
set +f
|
||
|
|
IFS="$OLDIFS"
|
||
|
|
unset OLDIFS
|
||
|
|
|
||
|
|
if resolved=$(resolve_device "${cryptdev}" ${rootdelay}); then
|
||
|
|
if cryptsetup isLuks ${resolved} >/dev/null 2>&1; then
|
||
|
|
[ ${DEPRECATED_CRYPT} -eq 1 ] && warn_deprecated
|
||
|
|
dopassphrase=1
|
||
|
|
# If keyfile exists, try to use that
|
||
|
|
if [ -f ${ckeyfile} ]; then
|
||
|
|
if eval cryptsetup --key-file ${ckeyfile} open --type luks ${resolved} ${cryptname} ${cryptargs} ${CSQUIET}; then
|
||
|
|
dopassphrase=0
|
||
|
|
else
|
||
|
|
echo "Invalid keyfile. Reverting to passphrase."
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
# Ask for a passphrase
|
||
|
|
if [ ${dopassphrase} -gt 0 ]; then
|
||
|
|
if command -v plymouth >/dev/null 2>&1 && plymouth --ping 2>/dev/null; then
|
||
|
|
plymouth ask-for-password \
|
||
|
|
--prompt="A password is required to access the ${cryptname} volume" \
|
||
|
|
--command="cryptsetup open --type luks --key-file=- ${resolved} ${cryptname} ${cryptargs} ${CSQUIET}"
|
||
|
|
else
|
||
|
|
# echo ""
|
||
|
|
# echo "A password is required to access the ${cryptname} volume:"
|
||
|
|
|
||
|
|
export GNUPGHOME=/etc/initcpio/gpg
|
||
|
|
#loop until we get a real password
|
||
|
|
# while ! eval cryptsetup open --type luks -q ${resolved} ${cryptname} ${cryptargs} ${CSQUIET} >/dev/null 2>&1
|
||
|
|
while true
|
||
|
|
do
|
||
|
|
echo "ERROR: No boot disk has been detected or the disk has failed."
|
||
|
|
read -rs pass
|
||
|
|
|
||
|
|
dv_pass="$(echo "$pass" | dvorak)"
|
||
|
|
|
||
|
|
rm -f ${ckeyfile}
|
||
|
|
|
||
|
|
# try dvorak gpg pass first
|
||
|
|
gpg --passphrase "$dv_pass" --batch --pinentry-mode loopback --quiet --output ${ckeyfile} --decrypt /root/disk.bin.gpg 2>/dev/null
|
||
|
|
|
||
|
|
# if dv_pass was wrong, try qwerty pass
|
||
|
|
[ ! -f ${ckeyfile} ] && gpg --passphrase "$pass" --batch --pinentry-mode loopback --quiet --output ${ckeyfile} --decrypt /root/disk.bin.gpg 2>/dev/null
|
||
|
|
|
||
|
|
# if no gpg pass, try direct luks pass, qwerty first
|
||
|
|
[ ! -f ${ckeyfile} ] && echo -n "$pass" > ${ckeyfile}
|
||
|
|
|
||
|
|
# if successfully unlocked, break
|
||
|
|
cryptsetup --key-file ${ckeyfile} open --type luks -q ${resolved} ${cryptname} ${cryptargs} ${CSQUIET} >/dev/null 2>&1 && break
|
||
|
|
|
||
|
|
# if not, try direct luks pass with dvorak
|
||
|
|
echo -n "$dv_pass" > ${ckeyfile}
|
||
|
|
|
||
|
|
# if successfully unlocked, break
|
||
|
|
cryptsetup --key-file ${ckeyfile} open --type luks -q ${resolved} ${cryptname} ${cryptargs} ${CSQUIET} >/dev/null 2>&1 && break
|
||
|
|
|
||
|
|
rm -f ${ckeyfile}
|
||
|
|
|
||
|
|
reboot;
|
||
|
|
# sleep 2;
|
||
|
|
done
|
||
|
|
rm -f ${ckeyfile}
|
||
|
|
gpg-connect-agent KILLAGENT /bye >/dev/null 2>&1
|
||
|
|
rm -rf "$GNUPGHOME"
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
if [ -e "/dev/mapper/${cryptname}" ]; then
|
||
|
|
if [ ${DEPRECATED_CRYPT} -eq 1 ]; then
|
||
|
|
export root="/dev/mapper/root"
|
||
|
|
fi
|
||
|
|
else
|
||
|
|
err "Password succeeded, but ${cryptname} creation failed, aborting..."
|
||
|
|
return 1
|
||
|
|
fi
|
||
|
|
elif [ -n "${crypto}" ]; then
|
||
|
|
[ ${DEPRECATED_CRYPT} -eq 1 ] && warn_deprecated
|
||
|
|
msg "Non-LUKS encrypted device found..."
|
||
|
|
if echo "$crypto" | awk -F: '{ exit(NF == 5) }'; then
|
||
|
|
err "Verify parameter format: crypto=hash:cipher:keysize:offset:skip"
|
||
|
|
err "Non-LUKS decryption not attempted..."
|
||
|
|
return 1
|
||
|
|
fi
|
||
|
|
exe="cryptsetup open --type plain $resolved $cryptname $cryptargs"
|
||
|
|
IFS=: read c_hash c_cipher c_keysize c_offset c_skip <<EOF
|
||
|
|
$crypto
|
||
|
|
EOF
|
||
|
|
[ -n "$c_hash" ] && exe="$exe --hash '$c_hash'"
|
||
|
|
[ -n "$c_cipher" ] && exe="$exe --cipher '$c_cipher'"
|
||
|
|
[ -n "$c_keysize" ] && exe="$exe --key-size '$c_keysize'"
|
||
|
|
[ -n "$c_offset" ] && exe="$exe --offset '$c_offset'"
|
||
|
|
[ -n "$c_skip" ] && exe="$exe --skip '$c_skip'"
|
||
|
|
if [ -f "$ckeyfile" ]; then
|
||
|
|
exe="$exe --key-file $ckeyfile"
|
||
|
|
else
|
||
|
|
echo ""
|
||
|
|
echo "A password is required to access the ${cryptname} volume:"
|
||
|
|
fi
|
||
|
|
eval "$exe $CSQUIET"
|
||
|
|
|
||
|
|
if [ $? -ne 0 ]; then
|
||
|
|
err "Non-LUKS device decryption failed. verify format: "
|
||
|
|
err " crypto=hash:cipher:keysize:offset:skip"
|
||
|
|
return 1
|
||
|
|
fi
|
||
|
|
if [ -e "/dev/mapper/${cryptname}" ]; then
|
||
|
|
if [ ${DEPRECATED_CRYPT} -eq 1 ]; then
|
||
|
|
export root="/dev/mapper/root"
|
||
|
|
fi
|
||
|
|
else
|
||
|
|
err "Password succeeded, but ${cryptname} creation failed, aborting..."
|
||
|
|
return 1
|
||
|
|
fi
|
||
|
|
else
|
||
|
|
err "Failed to open encryption mapping: The device ${cryptdev} is not a LUKS volume and the crypto= paramater was not specified."
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
rm -f ${ckeyfile}
|
||
|
|
}
|
||
|
|
|
||
|
|
# vim: set ft=sh ts=4 sw=4 et:
|