/
#!/usr/bin/bash
umask 022
usage=0
enable_fips=
check=0
boot_config=1
err_if_disabled=0
fips_install_complete=0
output_text=1
is_ostree_system=0
if test -f /run/ostree-booted -o -d /ostree; then
is_ostree_system=1
fi
enable2txt () {
case "$1" in
0)
echo "disabled"
;;
1)
echo "enabled"
;;
esac
}
cond_echo () {
if test "$output_text" != 0;then
echo "$@"
fi
}
while test $# -ge 1 ; do
case "$1" in
--enable)
enable_fips=1
;;
--disable)
enable_fips=0
;;
--check)
check=1
enable_fips=2
;;
--is-enabled)
check=1
enable_fips=2
err_if_disabled=1
output_text=0
;;
--no-bootcfg)
boot_config=0
;;
*)
usage=1
;;
esac
shift
done
if test $usage = 1 -o x$enable_fips = x ; then
echo "Check, enable, or disable (unsupported) the system FIPS mode."
echo "usage: $0 --enable|--disable [--no-bootcfg]"
echo "usage: $0 --check"
echo "usage: $0 --is-enabled"
exit 2
fi
# We don't handle the boot config on OSTree systems for now; it is assumed to be
# handled at a higher level. E.g. in Fedora CoreOS and RHEL CoreOS, it is
# intrinsically tied to the firstboot procedure.
if test "$is_ostree_system" = 1 && test "$enable_fips" = 1 && test "$boot_config" = 1; then
cond_echo "Cannot perform boot config changes on OSTree systems (use --no-bootcfg)"
exit 1
fi
if test -f /etc/system-fips ; then
# On OSTree systems, /etc/system-fips in the real root marks completion.
if test ! -d /boot -o "$is_ostree_system" = 1 -o ! -x /usr/bin/lsinitrd -o x"$(/usr/bin/lsinitrd -f etc/system-fips 2>/dev/null || test $? = 2 && echo y)" != x ; then
fips_install_complete=1
fi
fi
if test $check = 1 ; then
test $fips_install_complete = 0 && cond_echo "Installation of FIPS modules is not completed."
fips_enabled=$(cat /proc/sys/crypto/fips_enabled)
cond_echo "FIPS mode is $(enable2txt $fips_enabled)."
if test "$fips_enabled" = 1 ; then
if test $fips_install_complete = 0 ; then
cond_echo "Inconsistent state detected."
exit 1
fi
current="$(cat /etc/crypto-policies/state/current)"
if test "$(echo $current | cut -f 1 -d :)" != "FIPS" ; then
cond_echo -n "The current crypto policy ($current) "
cond_echo -n 'neither is the FIPS policy '
cond_echo 'nor is based on the FIPS policy.'
cond_echo 'Inconsistent state detected.'
exit 1
fi
else
if test $fips_install_complete = 1 ; then
cond_echo "Inconsistent state detected."
exit 1
fi
current="$(cat /etc/crypto-policies/state/current)"
if test "$(echo $current | cut -f 1 -d :)" == "FIPS" ; then
cond_echo -n "The current crypto policy ($current) "
cond_echo -n 'is based on the FIPS policy, '
cond_echo 'but FIPS mode is not enabled.'
cond_echo 'Inconsistent state detected.'
exit 1
fi
fi
if test "$fips_enabled" != 1 && test "$err_if_disabled" = 1;then
exit 2
fi
exit 0
fi
if [ $(id -u) != 0 ]; then
echo "You must be root to run $(basename $0)"
exit 1
fi
# Boot configuration
if test "$boot_config" = 1 && test ! -x "$(command -v grubby)" ; then
echo "The grubby command is missing, please configure the bootloader manually."
boot_config=0
fi
if test "$boot_config" = 1 && test ! -d /boot ; then
echo >&2 "/boot directory is missing, FIPS mode cannot be $(enable2txt $enable_fips)."
echo >&2 "If you want to configure the bootloader manually, re-run with --no-bootcfg."
exit 1
fi
if test "$boot_config" = 1 && test -z "$(ls -A /boot)" ; then
echo >&2 "/boot directory is empty, FIPS mode cannot be $(enable2txt $enable_fips)."
echo >&2 "If you want to configure the bootloader manually, re-run with --no-bootcfg."
exit 1
fi
if test "$FIPS_MODE_SETUP_SKIP_ARGON2_CHECK" != 1 && \
test -x "$(command -v cryptsetup)" ; then
# Best-effort detection of LUKS Argon2 usage
argon2_found=''
# two redundant ways to list device names
devs=$( (find /dev/mapper/ -type l -printf '%f\n'; \
dmsetup ls --target crypt | cut -f1) \
| sort -u)
while IFS= read -r devname; do
back=$(cryptsetup status "$devname" | \
grep -F device: |
sed -E 's/.*device:\s+//')
if test -z "$back"; then
continue
fi
if ! test -b "$back"; then
echo >&2 -n "Warning: detected device '$back' "
echo >&2 -n 'is not a valid block device. '
echo >&2 'Cannot check whether it uses Argon2.'
continue
fi
dump=$(cryptsetup luksDump "$back")
if grep -qEi 'PBKDF:.*argon' <<<"$dump"; then
argon2_found+=" $back($devname)"
fi
done <<<"$devs"
if test -n "$argon2_found" ; then
echo >&2 -n "The following encrypted devices use Argon2 PBKDF:"
echo >&2 "$argon2_found"
echo >&2 'Aborting fips-mode-setup because of that.'
echo >&2 -n 'Please refer to the '
echo >&2 'cryptsetup-luksConvertKey(8) manpage.'
exit 76
fi
fi
if test "$FIPS_MODE_SETUP_SKIP_WARNING" != 1 ; then
if test $enable_fips = 1 ; then
echo >&2 "*****************************************************************"
echo >&2 "* PRESS CONTROL-C WITHIN 15 SECONDS TO ABORT... *"
echo >&2 "* *"
echo >&2 "* ENABLING FIPS MODE AFTER THE INSTALLATION IS NOT RECOMMENDED. *"
echo >&2 "* THIS OPERATION CANNOT BE UNDONE. *"
echo >&2 "* REINSTALL WITH fips=1 INSTEAD. *"
echo >&2 "*****************************************************************"
elif test $enable_fips = 0 ; then
echo >&2 "*****************************************************************"
echo >&2 "* PRESS CONTROL-C WITHIN 15 SECONDS TO ABORT... *"
echo >&2 "* *"
echo >&2 "* DISABLING FIPS MODE AFTER THE INSTALLATION IS NOT SUPPORTED. *"
echo >&2 "* THIS OPERATION CANNOT BE UNDONE. *"
echo >&2 "* WIPE ALL MEDIA AND REINSTALL WITHOUT fips=1 INSTEAD. *"
echo >&2 "*****************************************************************"
fi
for i in {15..1}; do
echo >&2 -n "$i... "
sleep 1 || exit 77
done
echo >&2
fi
if test $enable_fips = 1 ; then
if test $fips_install_complete = 0 ; then
fips-finish-install --complete
if test $? != 0 ; then
echo "Installation of FIPS modules could not be completed."
exit 1
fi
fi
target="$(cat /etc/crypto-policies/state/current)"
if test "$(echo $target | cut -f 1 -d :)" == "FIPS" ; then
cond_echo "Preserving current FIPS-based policy ${target}."
cond_echo -n 'Please review the subpolicies to ensure they '
cond_echo 'only restrict, not relax the FIPS policy.'
else
target=FIPS
fi
update-crypto-policies --no-reload --set "${target}" 2>/dev/null
else
fips-finish-install --undo
update-crypto-policies --no-reload --set DEFAULT 2>/dev/null
fi
boot_device_opt=" boot=UUID=<your-boot-device-uuid>"
if test "$boot_config" = 1 ; then
boot_device="$(stat -c %d:%m /boot)"
root_device="$(stat -c %d:%m /)" # contrary to findmnt, works in chroot
if test "$boot_device" = "$root_device"; then
# /boot is not separate from /root
boot_device_opt=""
else
# trigger autofs, when boot is mounted with
# automount.boot / systemd-gpt-auto-generator(8)
pushd /boot >/dev/null
FINDMNT_UUID='findmnt --first-only -t noautofs --noheadings --output uuid'
boot_uuid=$(
$FINDMNT_UUID --mountpoint /boot --fstab || # priority
$FINDMNT_UUID --mountpoint /boot
)
if test -z "$boot_uuid"; then
echo "Boot device not identified, you have to configure the bootloader manually."
boot_config=0
else
boot_device_opt=" boot=UUID=$boot_uuid"
fi
popd >/dev/null
fi
fi
echo "FIPS mode will be $(enable2txt $enable_fips)."
fipsopts="fips=$enable_fips$boot_device_opt"
if test "$boot_config" = 1 ; then
grubby --update-kernel=ALL --args="$fipsopts"
if test x"$(uname -m)" = xs390x; then
if command -v zipl >/dev/null; then
zipl
else
echo -n '`zipl` execution has been skipped: '
echo '`zipl` not found.'
fi
fi
echo "Please reboot the system for the setting to take effect."
else
echo "Now you need to configure the bootloader to add kernel options \"$fipsopts\""
echo "and reboot the system for the setting to take effect."
fi
exit 0