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shimunn 2019-09-19 16:49:40 +02:00
parent 402719337b
commit d09569f060
Signed by: shimun
GPG Key ID: E81D8382DC2F971B
12 changed files with 812 additions and 535 deletions
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84
dracut/96luks-2fa/luks-2fa-generator.sh Executable file
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#!/bin/bash
NORMAL_DIR="/run/systemd/system"
LUKS_2FA_WANTS="/etc/systemd/system/luks-2fa.target.wants"
CRYPTSETUP="/usr/lib/systemd/systemd-cryptsetup"
FIDO2LUKS="/usr/bin/fido2luks"
XXD="/usr/bin/xxd"
MOUNT=$(command -v mount)
UMOUNT=$(command -v umount)
TIMEOUT=30
generate_service () {
local credential_id=$1 target_uuid=$2 timeout=$3 sd_dir=${4:-$NORMAL_DIR}
local sd_target_uuid=$(systemd-escape -p $target_uuid)
local target_dev="dev-disk-by\x2duuid-${sd_target_uuid}.device"
local crypto_target_service="systemd-cryptsetup@luks\x2d${sd_target_uuid}.service"
local sd_service="${sd_dir}/luks-2fa@luks\x2d${sd_target_uuid}.service"
{
printf -- "[Unit]"
printf -- "\nDescription=%s" "2fa for luks"
printf -- "\nBindsTo=%s" "$target_dev"
printf -- "\nAfter=%s cryptsetup-pre.target systemd-journald.socket" "$target_dev" #TODO: create service to wait or authenicator
printf -- "\nBefore=%s umount.target luks-2fa.target" "$crypto_target_service"
printf -- "\nConflicts=umount.target"
printf -- "\nDefaultDependencies=no"
printf -- "\nJobTimeoutSec=%s" "$timeout"
printf -- "\n\n[Service]"
printf -- "\nType=oneshot"
printf -- "\nRemainAfterExit=yes"
printf -- "\nEnvironment=FIDO2LUKS_CREDENTIAL_ID='%s'" "$credential_id"
printf -- "\nEnvironment=FIDO2LUKS_SALT='%s'" "Ask"
printf -- "\nEnvironment=FIDO2LUKS_PASSWORD_HELPER='%s'" "/usr/bin/systemd-ask-password \"Disk 2fa password\""
printf -- "\nKeyringMode=%s" "shared"
#printf -- "\nExecStart=${CRYPTSETUP} attach 'luks-%s' '/dev/disk/by-uuid/%s' 'none'" "$keyfile_uuid" "$keyfile_uuid" #LUKS on USB
#printf -- "\nExecStart=${MOUNT} '/dev/mapper/luks-%s' %s" "$keyfile_uuid" "$keyfile_mountpoint" #Mount keyfile
printf -- "\nExecStart=/bin/bash -c \"${FIDO2LUKS} print-secret | ${XXD} -r -p - | ${CRYPTSETUP} attach 'luks-%s' '/dev/disk/by-uuid/%s' '/dev/stdin'\"" "$target_uuid" "$target_uuid"
#printf -- "\nExecStart=${UMOUNT} '%s'" "$keyfile_mountpoint"
#printf -- "\nExecStart=${CRYPTSETUP} detach 'luks-%s'" "$keyfile_uuid"
printf -- "\nExecStop=${CRYPTSETUP} detach 'luks-%s'" "$target_uuid"
} > "$sd_service"
mkdir -p "${sd_dir}/${crypto_target_service}.d"
{
printf -- "[Unit]"
printf -- "\nConditionPathExists=!/dev/mapper/luks-%s" "$target_uuid"
} > "${sd_dir}/${crypto_target_service}.d/drop-in.conf"
ln -sf "$sd_service" "${LUKS_2FA_WANTS}/"
}
parse_cmdline () {
local CMDLINE
IFS=':' read -ra CMDLINE <<<${1#rd.luks.2fa=}
local __k_uuid=$2
eval $__k_uuid=${CMDLINE[0]#UUID=}
local __t_uuid=$3
eval $__t_uuid=${CMDLINE[1]#UUID=}
local __t=$4
eval $__t=${CMDLINE[2]:-$TIMEOUT}
}
generate_from_cmdline () {
local credential_id= target_uuid= timeout=
for argv in $(cat /proc/cmdline); do
case $argv in
rd.luks.2fa=*)
parse_cmdline $argv credential_id target_uuid timeout
generate_service $credential_id $target_uuid $timeout
;;
esac
done
}
generate_from_cmdline

4
dracut/96luks-2fa/luks-2fa.target Normal file
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[Unit]
Description=2FA with LUKS
Before=sysinit.target dracut-pre-mount.service
After=systemd-ask-password-console.path

30
dracut/96luks-2fa/module-setup.sh Executable file
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#!/bin/bash
check () {
if ! dracut_module_included "systemd"; then
"luks-2fa needs systemd in the initramfs"
return 1
fi
return 255
set -e
bash -n "$moddir/luks-2fa-generator.sh"
}
depends () {
echo "systemd"
return 0
}
install () {
inst "$moddir/luks-2fa-generator.sh" "/etc/systemd/system-generators/luks-2fa-generator.sh"
inst_simple "/usr/bin/xxd" "/usr/bin/xxd"
inst_simple "/usr/bin/fido2luks" "/usr/bin/fido2luks"
inst "$systemdutildir/systemd-cryptsetup"
mkdir -p "$initdir/luks-2fa"
inst "$moddir/luks-2fa.target" "/etc/systemd/system/luks-2fa.target"
mkdir -p "$initdir/etc/systemd/system/luks-2fa.target.wants"
mkdir -p "$initdir/etc/systemd/system/sysinit.target.wants"
ln -sf "/etc/systemd/system/luks-2fa.target" "$initdir/etc/systemd/system/sysinit.target.wants/"
}

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dracut/LICENSE Normal file
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Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.
12. No Surrender of Others' Freedom.
If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all. For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
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PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
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 3 of the License, 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.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

37
dracut/Makefile
View File

@ -1,23 +1,22 @@
.PHONY: install .PHONY: install clean
DRACUT_MODULE_D=/usr/lib/dracut/modules.d/95fido2luks DRACUT_MODULES_D=/usr/lib/dracut/modules.d
DRACUT_CONF_D=/etc/dracut.conf.d DRACUT_CONF_D=/etc/dracut.conf.d
build: MODULE_CONF_D=dracut.conf.d
cargo install --root . --path ../ --force MODULE_CONF=luks-2fa.conf
install: build MODULE_DIR=96luks-2fa
sudo mkdir -p ${DRACUT_MODULE_D}
sudo cp bin/* /usr/local/bin/
sudo cp bin/* ${DRACUT_MODULE_D}/
sudo cp module-setup.sh fido2luks.sh bin/* ${DRACUT_MODULE_D}/
sudo chown -R root: ${DRACUT_MODULE_D}/
setup: install
sudo bin/fido2luks setup
sudo cp fido2luks.json /etc/fido2luks.json
clean:
cargo clean
rm -rf bin fido2luks.json
rm -f .crates.toml
uninstall:
rm -rf /etc/fido2luks.json ${DRACUT_CONF_D}/fido2luks.conf ${DRACUT_MODULES_D}/95fido2luks
help:
@echo make help to show this help
@echo make install to install
@echo make clean to remove
install:
cp ${MODULE_CONF_D}/${MODULE_CONF} ${DRACUT_CONF_D}/
cp -r ${MODULE_DIR} ${DRACUT_MODULES_D}/
dracut -fv
clean:
rm ${DRACUT_CONF_D}/${MODULE_CONF}
rm -r ${DRACUT_MODULES_D}/${MODULE_DIR}
dracut -fv

113
dracut/README.md
View File

@ -1,112 +1 @@
# ykluks Thease scripts originate from https://github.com/raffaeleflorio/luks-2fa-dracut and where adapted to my usecase
Dracut module to use yubikey in challenge/response mode to unlock LUKS partition.
This module is written to work with Qubes OS 3.2. It may work with other dracut
based distributions but there are other more complete tools you may want to try
(e.g. https://github.com/bpereto/ykfde).
For ubuntu based distributions you may want to try this one: https://github.com/cornelinux/yubikey-luks
WARNING
-------
Please note that the current version is tested with a LVM-on-LUKS setup only. The default Qubes OS installation
is a LUKS-on-LVM setup which will not work yet. Patches for LUKS-on-LVM are welcome as well as experienced testers
because a dont have a LUKS-on-LVM installation to test with.
Initialize Yubikey
------------------
Install yubikey tools.
qubes-dom0-update ykpers
Initialize the Yubikey for challenge/response in slot 2.
ykpersonalize -2 -ochal-resp -ochal-hmac -ohmac-lt64 -oserial-api-visible
Add luks slot
-------------
You need to manually add a new luks slot with the response you get when sending your
password to the yubikey.
Get response from yubikey.
ykchalresp -2 mypassword
You may want to check which LUKS key slots are currently used. Make sure you use the correct device file.
This may help if you want to replace your current password with a more secure backup password later.
sudo cryptsetup LuksDump /dev/sdXX
Use the output from the previous command as new passphrase.
sudo cryptsetup luksAddKey --key-slot a_free_key_slot /dev/sdXX
Install ykluks
--------------
To get the ykluks archive to dom0 you can run the following command where downloadvm is the VM you want to use for downloading ykluks.
qvm-run --pass-io downloadvm "wget -O - https://github.com/the2nd/ykluks/archive/master.zip" > ykluks.zip
Unzip it.
unzip ykluks.zip
rm ykluks.zip
Run the installer script. This will copy all files to the right place.
cd ykluks-master
sudo ./install.sh
Prepare system for ykluks enabled initramfs
-------------------------------------------
Now we need to do some modifications for ykluks to work.
You may want to make a backup of your current initramfs. You can use the old initramfs in case something went wrong (see "something went wrong" below).
sudo cp -av /boot/initramfs-4.8.12-12.pvops.qubes.x86_64.img /boot/initramfs-4.8.12-12.pvops.qubes.x86_64.img.org
1. Comment out all lines in crypttab.
2. Change the line with "rd.luks.uuid=..." in /etc/default/grub to "rd.ykluks.uuid=..."
3. Change the line with "rd.qubes.hide_all_usb" in /etc/default/grub to "rd.ykluks.hide_all_usb"
Now we have to recreate the grub config and the initramfs.
sudo grub2-mkconfig > /boot/grub2/grub.cfg
sudo dracut -f
That's it. After a reboot you should be able to unlock your LUKS partition with your password and your yubikey.
Remove normal password and add secure backup password
-----------------------------------------------------
If everyting works as expected you may want to replace your (probably) insecure LUKS password with a secure backup password.
Add the new backup password.
sudo cryptsetup luksAddKey --key-slot a_free_key_slot /dev/sdXX
sudo cryptsetup luksKillslot --key-slot your_old_key_slot /dev/sdXX
Something went wrong :(
-----------------------
In case you run into any trouble after ykluks installation you can use the backup initramfs you (hopefully) created before generating a new one.
1. Select the Qubes OS boot entry in the grub boot menu.
2. Press "e" to get into edit mode.
3. First we need to change the "rd.ykluks.uuid=..." parameter back to "rd.luks.uuid=...". This is normally in the line that starts with "module /vmlinuz-...".
4. Then we need to get the line that loads the initramfs. This line normally starts with "module --nounzip /initramfs-..". Just append .org to this line.
5. Press "CTRL+X" to boot this configuration.

245
dracut/crypt-lib.sh
View File

@ -1,245 +0,0 @@
#!/usr/bin/sh
command -v getarg >/dev/null || . /lib/dracut-lib.sh
# check if the crypttab contains an entry for a LUKS UUID
crypttab_contains() {
local luks="$1"
local dev="$2"
local l d rest
if [ -f /etc/crypttab ]; then
while read l d rest || [ -n "$l" ]; do
strstr "${l##luks-}" "${luks##luks-}" && return 0
strstr "$d" "${luks##luks-}" && return 0
if [ -n "$dev" ]; then
for _dev in $(devnames $d); do
[ "$dev" -ef "$_dev" ] && return 0
done
fi
if [ -e /etc/block_uuid.map ]; then
# search for line starting with $d
_line=$(sed -n "\,^$d .*$,{p}" /etc/block_uuid.map)
[ -z "$_line" ] && continue
# get second column with uuid
_uuid="$(echo $_line | sed 's,^.* \(.*$\),\1,')"
strstr "$_uuid" "${luks##luks-}" && return 0
fi
done < /etc/crypttab
fi
return 1
}
# ask_for_password
#
# Wraps around plymouth ask-for-password and adds fallback to tty password ask
# if plymouth is not present.
#
# --cmd command
# Command to execute. Required.
# --prompt prompt
# Password prompt. Note that function already adds ':' at the end.
# Recommended.
# --tries n
# How many times repeat command on its failure. Default is 3.
# --ply-[cmd|prompt|tries]
# Command/prompt/tries specific for plymouth password ask only.
# --tty-[cmd|prompt|tries]
# Command/prompt/tries specific for tty password ask only.
# --tty-echo-off
# Turn off input echo before tty command is executed and turn on after.
# It's useful when password is read from stdin.
ask_for_password() {
local cmd; local prompt; local tries=3
local ply_cmd; local ply_prompt; local ply_tries=3
local tty_cmd; local tty_prompt; local tty_tries=3
local ret
while [ $# -gt 0 ]; do
case "$1" in
--cmd) ply_cmd="$2"; tty_cmd="$2"; shift;;
--ply-cmd) ply_cmd="$2"; shift;;
--tty-cmd) tty_cmd="$2"; shift;;
--prompt) ply_prompt="$2"; tty_prompt="$2"; shift;;
--ply-prompt) ply_prompt="$2"; shift;;
--tty-prompt) tty_prompt="$2"; shift;;
--tries) ply_tries="$2"; tty_tries="$2"; shift;;
--ply-tries) ply_tries="$2"; shift;;
--tty-tries) tty_tries="$2"; shift;;
--tty-echo-off) tty_echo_off=yes;;
esac
shift
done
{ flock -s 9;
# Prompt for password with plymouth, if installed and running.
if type plymouth >/dev/null 2>&1 && plymouth --ping 2>/dev/null; then
plymouth ask-for-password \
--prompt "$ply_prompt" --number-of-tries=$ply_tries \
--command="$ply_cmd"
ret=$?
else
if [ "$tty_echo_off" = yes ]; then
stty_orig="$(stty -g)"
stty -echo
fi
local i=1
while [ $i -le $tty_tries ]; do
[ -n "$tty_prompt" ] && \
printf "$tty_prompt [$i/$tty_tries]:" >&2
eval "$tty_cmd" && ret=0 && break
ret=$?
i=$(($i+1))
[ -n "$tty_prompt" ] && printf '\n' >&2
done
[ "$tty_echo_off" = yes ] && stty $stty_orig
fi
} 9>/.console_lock
[ $ret -ne 0 ] && echo "Wrong password" >&2
return $ret
}
# Try to mount specified device (by path, by UUID or by label) and check
# the path with 'test'.
#
# example:
# test_dev -f LABEL="nice label" /some/file1
test_dev() {
local test_op=$1; local dev="$2"; local f="$3"
local ret=1; local mount_point=$(mkuniqdir /mnt testdev)
local path
[ -n "$dev" -a -n "$*" ] || return 1
[ -d "$mount_point" ] || die 'Mount point does not exist!'
if mount -r "$dev" "$mount_point" >/dev/null 2>&1; then
test $test_op "${mount_point}/${f}"
ret=$?
umount "$mount_point"
fi
rmdir "$mount_point"
return $ret
}
# match_dev devpattern dev
#
# Returns true if 'dev' matches 'devpattern'. Both 'devpattern' and 'dev' are
# expanded to kernel names and then compared. If name of 'dev' is on list of
# names of devices matching 'devpattern', the test is positive. 'dev' and
# 'devpattern' may be anything which function 'devnames' recognizes.
#
# If 'devpattern' is empty or '*' then function just returns true.
#
# Example:
# match_dev UUID=123 /dev/dm-1
# Returns true if /dev/dm-1 UUID starts with "123".
match_dev() {
[ -z "$1" -o "$1" = '*' ] && return 0
local devlist; local dev
devlist="$(devnames "$1")" || return 255
dev="$(devnames "$2")" || return 255
strstr "
$devlist
" "
$dev
"
}
# getkey keysfile for_dev
#
# Reads file <keysfile> produced by probe-keydev and looks for first line to
# which device <for_dev> matches. The successful result is printed in format
# "<keydev>:<keypath>". When nothing found, just false is returned.
#
# Example:
# getkey /tmp/luks.keys /dev/sdb1
# May print:
# /dev/sdc1:/keys/some.key
getkey() {
local keys_file="$1"; local for_dev="$2"
local luks_dev; local key_dev; local key_path
[ -z "$keys_file" -o -z "$for_dev" ] && die 'getkey: wrong usage!'
[ -f "$keys_file" ] || return 1
local IFS=:
while read luks_dev key_dev key_path || [ -n "$luks_dev" ]; do
if match_dev "$luks_dev" "$for_dev"; then
echo "${key_dev}:${key_path}"
return 0
fi
done < "$keys_file"
return 1
}
# readkey keypath keydev device
#
# Mounts <keydev>, reads key from file <keypath>, optionally processes it (e.g.
# if encrypted with GPG) and prints to standard output which is supposed to be
# read by cryptsetup. <device> is just passed to helper function for
# informational purpose.
readkey() {
local keypath="$1"
local keydev="$2"
local device="$3"
# No mounting needed if the keyfile resides inside the initrd
if [ "/" == "$keydev" ]; then
local mntp=/
else
# This creates a unique single mountpoint for *, or several for explicitly
# given LUKS devices. It accomplishes unlocking multiple LUKS devices with
# a single password entry.
local mntp="/mnt/$(str_replace "keydev-$keydev-$keypath" '/' '-')"
if [ ! -d "$mntp" ]; then
mkdir "$mntp"
mount -r "$keydev" "$mntp" || die 'Mounting rem. dev. failed!'
fi
fi
case "${keypath##*.}" in
gpg)
if [ -f /lib/dracut-crypt-gpg-lib.sh ]; then
. /lib/dracut-crypt-gpg-lib.sh
gpg_decrypt "$mntp" "$keypath" "$keydev" "$device"
else
die "No GPG support to decrypt '$keypath' on '$keydev'."
fi
;;
img)
if [ -f /lib/dracut-crypt-loop-lib.sh ]; then
. /lib/dracut-crypt-loop-lib.sh
loop_decrypt "$mntp" "$keypath" "$keydev" "$device"
printf "%s\n" "umount \"$mntp\"; rmdir \"$mntp\";" > ${hookdir}/cleanup/"crypt-loop-cleanup-99-${mntp##*/}".sh
return 0
else
die "No loop file support to decrypt '$keypath' on '$keydev'."
fi
;;
fido2)
if [ -f /lib/dracut-crypt-fido2-lib.sh ]; then
. /lib/dracut-crypt-fido2-lib.sh
fido2_decrypt "$mntp" "$keypath" "$keydev" "$device"
else
die "No FIDO2 support to decrypt '$keypath' on '$keydev'."
fi
;;
*) cat "$mntp/$keypath" ;;
esac
# No unmounting if the keyfile resides inside the initrd
if [ "/" != "$keydev" ]; then
# General unmounting mechanism, modules doing custom cleanup should return earlier
# and install a pre-pivot cleanup hook
umount "$mntp"
rmdir "$mntp"
fi
}

17
dracut/crypt-lib.sh.patch
View File

@ -1,17 +0,0 @@
--- crypt-lib.sh 2019-09-18 16:30:43.546776135 +0200
+++ /usr/lib/dracut/modules.d/90crypt/crypt-lib.sh 2018-10-08 15:38:33.000000000 +0200
@@ -224,14 +224,6 @@
die "No loop file support to decrypt '$keypath' on '$keydev'."
fi
;;
- fido2)
- if [ -f /lib/dracut-crypt-fido2-lib.sh ]; then
- . /lib/dracut-crypt-fido2-lib.sh
- fido2_decrypt "$mntp" "$keypath" "$keydev" "$device"
- else
- die "No FIDO2 support to decrypt '$keypath' on '$keydev'."
- fi
- ;;
*) cat "$mntp/$keypath" ;;
esac

18
dracut/dracut-crypt-fido2-lib.sh
View File

@ -1,18 +0,0 @@
#!/usr/bin/sh
command -v ask_for_password >/dev/null || . /lib/dracut-crypt-lib.sh
fido2_decrypt() {
#Unused local mntp="$1"
local keypath="$2"
#Unused local keydev=$3
#Unused local device=$4
. /etc/$keypath
export FIDO2LUKS_CREDENTIAL_ID="${CREDENTIAL_ID:-$FIDO2LUKS_CREDENTIAL_ID}"
export FIDO2LUKS_SALT="$(getargs rd.fido2luks.salt)"
export FIDO2LUKS_PASSWORD_HELPER="/usr/bin/systemd-ask-password 'Disk 2fa password'"
if [ -z "$FIDO2LUKS_SALT" ]; then
export FIDO2LUKS_SALT="Ask"
fi
/bin/fido2luks print-secret | xxd -r -p -
}

1
dracut/dracut.conf.d/luks-2fa.conf Normal file
View File

@ -0,0 +1 @@
add_dracutmodules+=" luks-2fa "

57
dracut/fido2luks.sh
View File

@ -1,57 +0,0 @@
#!/bin/sh
LUKS_DEVICES="$(getargs rd.fido2luks.devices | tr ' ' '\n')"
CREDENTIAL_ID="$(getargs rd.fido2luks.credentialid)"
SALT="$(getargs rd.fido2luks.salt)"
MESSAGE_TIMEOUT=5
display_msg_timeout () {
local MSG="$1"
(plymouth display-message --text="$MSG";sleep $MESSAGE_TIMEOUT;plymouth hide-message --text="$MSG") &
}
display_msg () {
local MSG="$1"
plymouth display-message --text="$MSG" &
}
hide_msg () {
local MSG="$1"
plymouth hide-message --text="$MSG" &
}
handle_authenticator() {
while ! /bin/f2l connected; do
display_msg_timeout "Please connect your authenicator"
sleep 1
done
export FIDO2LUKS_CREDENTIAL_ID="$CREDENTIAL_ID"
export FIDO2LUKS_SALT="${SALT:-Ask}"
export FIDO2LUKS_PASSWORD_HELPER="/usr/bin/systemd-ask-password --no-tty 'Disk 2fa password'"
for DEV in $LUKS_DEVICES ; do
export FIDO2LUKS_DEVICE="$DEV"
export FIDO2LUKS_MAPPER_NAME="${MAPPER_NAME:-luks-$DEV}"
TRIES="0"
while true; do
ERR="$(/bin/f2l open -e 2>&1)"
if [ "$?" -eq 1 ]; then
display_msg_timeout "Failed to unlock: $ERR"
TRIES="$[$TRIES+1]"
if [ "$TRIES" -gt 5 ]; then
exit 1
fi
sleep 5
else
exit 0
fi
done
done
}
if [ ! -z "$LUKS_DEVICES" ]; then
handle_authenticator
fi

67
dracut/module-setup.sh
View File

@ -1,67 +0,0 @@
#!/bin/bash
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh
check() {
return 0
}
depends() {
echo crypt
}
install() {
#inst_hook pre-trigger 91 "$moddir/ykluks.sh"
#inst_hook initqueue 01 "$moddir/fido2luks.sh"
#inst_hook pre-mount 1 "$moddir/fix_crypttab.sh"
#inst_hook pre-trigger 10 "$moddir/ykluks.sh"
#inst_hook cmdline 5 "$moddir/ykluks.sh"
#inst_simple "/bin/bash" "/bin/bash"
inst tr
inst cut
inst true
inst find
inst blkid
inst lsusb
inst cryptsetup
# inst fido2luks
# Stolen from qubes-pciback module.
inst lspci
inst grep
inst awk
#inst_simple "/usr/bin/tr" "/bin/tr"
#inst_simple "/usr/bin/cut" "/bin/cut"
#inst_simple "/usr/bin/true" "/bin/true"
#inst_simple "/usr/sbin/blkid" "/bin/blkid"
#inst_simple "/usr/bin/ykchalresp" "/bin/ykchalresp"
inst_simple "/usr/bin/xxd" "/usr/bin/xxd"
inst_simple "$moddir/fido2luks" "/usr/bin/fido2luks"
inst_simple "$moddir/dracut-crypt-fido2-lib.sh" "/lib/dracut-crypt-fido2-lib.sh"
#inst_rules "$moddir/20-ykfde.rules"
inst_rules "/usr/lib/udev/rules.d/60-u2f-hidraw.rules"
#inst_simple "$moddir/ykluks.sh" "/bin/ykluks.sh"
#inst_hook cmdline 30 "$moddir/parse-mod.sh"
#inst_simple "$moddir/ykfde.sh" /sbin/ykfde.sh
#inst_simple /usr/lib/udev/ykfde
#inst_simple /etc/ykfde.conf
#inst_dir /etc/ykfde.d/*
inst_multiple -o \
$systemdsystemunitdir/systemd-ask-password-console.path \
$systemdsystemunitdir/systemd-ask-password-console.service \
systemd-ask-password systemd-tty-ask-password-agent
#dracut_need_initqueue
}
installkernel() {
# Stolen from qubes-pciback module.
local mod=
for mod in pciback xen-pciback; do
if modinfo -k "${kernel}" "${mod}" >/dev/null 2>&1; then
hostonly='' instmods "${mod}"
fi
done
}