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https://github.com/systemd/systemd.git
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217 lines
9.2 KiB
Bash
Executable File
217 lines
9.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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# SPDX-License-Identifier: LGPL-2.1-or-later
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set -eux
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set -o pipefail
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# TODO:
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# - /proc/cmdline parsing
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# - figure out token support (apart from TPM2, as that's covered by TEST-70-TPM2)
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# - this might help https://www.qemu.org/docs/master/system/devices/ccid.html
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# - expect + interactive auth?
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# We set up an encrypted /var partition which should get mounted automatically
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# on boot
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mountpoint /var
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systemctl --state=failed --no-legend --no-pager | tee /failed
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if [[ -s /failed ]]; then
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echo >&2 "Found units in failed state"
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exit 1
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fi
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at_exit() {
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set +e
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mountpoint -q /proc/cmdline && umount /proc/cmdline
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rm -f /etc/crypttab
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[[ -e /tmp/crypttab.bak ]] && cp -fv /tmp/crypttab.bak /etc/crypttab
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[[ -n "${STORE_LOOP:-}" ]] && losetup -d "$STORE_LOOP"
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[[ -n "${WORKDIR:-}" ]] && rm -rf "$WORKDIR"
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systemctl daemon-reload
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}
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trap at_exit EXIT
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cryptsetup_start_and_check() {
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local expect_fail=0
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local ec volume unit
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if [[ "${1:?}" == "-f" ]]; then
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expect_fail=1
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shift
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fi
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for volume in "$@"; do
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unit="systemd-cryptsetup@$volume.service"
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# The unit existence check should always pass
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[[ "$(systemctl show -P LoadState "$unit")" == loaded ]]
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systemctl list-unit-files "$unit"
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systemctl start "$unit" && ec=0 || ec=$?
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if [[ "$expect_fail" -ne 0 ]]; then
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if [[ "$ec" -eq 0 ]]; then
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echo >&2 "Unexpected pass when starting $unit"
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return 1
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fi
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return 0
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fi
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if [[ "$ec" -ne 0 ]]; then
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echo >&2 "Unexpected fail when starting $unit"
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return 1
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fi
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systemctl status "$unit"
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test -e "/dev/mapper/$volume"
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systemctl stop "$unit"
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test ! -e "/dev/mapper/$volume"
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done
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return 0
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}
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# Note: some stuff (especially TPM-related) is already tested by TEST-70-TPM2,
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# so focus more on other areas instead
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# Use a common workdir to make the cleanup easier
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WORKDIR="$(mktemp -d)"
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# Prepare a couple of LUKS2-encrypted disk images
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#
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# 1) Image with an empty password
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IMAGE_EMPTY="$WORKDIR/empty.img)"
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IMAGE_EMPTY_KEYFILE="$WORKDIR/empty.keyfile"
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IMAGE_EMPTY_KEYFILE_ERASE="$WORKDIR/empty-erase.keyfile"
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IMAGE_EMPTY_KEYFILE_ERASE_FAIL="$WORKDIR/empty-erase-fail.keyfile)"
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truncate -s 32M "$IMAGE_EMPTY"
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echo -n passphrase >"$IMAGE_EMPTY_KEYFILE"
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chmod 0600 "$IMAGE_EMPTY_KEYFILE"
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cryptsetup luksFormat --batch-mode \
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--pbkdf pbkdf2 \
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--pbkdf-force-iterations 1000 \
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--use-urandom \
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"$IMAGE_EMPTY" "$IMAGE_EMPTY_KEYFILE"
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PASSWORD=passphrase NEWPASSWORD="" systemd-cryptenroll --password "$IMAGE_EMPTY"
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# Duplicate the key file to test keyfile-erase as well
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cp -v "$IMAGE_EMPTY_KEYFILE" "$IMAGE_EMPTY_KEYFILE_ERASE"
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# The key should get erased even on a failed attempt, so test that too
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cp -v "$IMAGE_EMPTY_KEYFILE" "$IMAGE_EMPTY_KEYFILE_ERASE_FAIL"
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# 2) Image with a detached header and a key file offset + size
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IMAGE_DETACHED="$WORKDIR/detached.img"
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IMAGE_DETACHED_KEYFILE="$WORKDIR/detached.keyfile"
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IMAGE_DETACHED_KEYFILE2="$WORKDIR/detached.keyfile2"
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IMAGE_DETACHED_HEADER="$WORKDIR/detached.header"
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truncate -s 32M "$IMAGE_DETACHED"
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dd if=/dev/urandom of="$IMAGE_DETACHED_KEYFILE" count=64 bs=1
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dd if=/dev/urandom of="$IMAGE_DETACHED_KEYFILE2" count=32 bs=1
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chmod 0600 "$IMAGE_DETACHED_KEYFILE" "$IMAGE_DETACHED_KEYFILE2"
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cryptsetup luksFormat --batch-mode \
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--pbkdf pbkdf2 \
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--pbkdf-force-iterations 1000 \
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--use-urandom \
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--header "$IMAGE_DETACHED_HEADER" \
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--keyfile-offset 32 \
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--keyfile-size 16 \
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"$IMAGE_DETACHED" "$IMAGE_DETACHED_KEYFILE"
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# Also, add a second key file to key slot 8
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# Note: --key-slot= behaves as --new-key-slot= when used alone for backwards compatibility
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cryptsetup luksAddKey --batch-mode \
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--header "$IMAGE_DETACHED_HEADER" \
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--key-file "$IMAGE_DETACHED_KEYFILE" \
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--keyfile-offset 32 \
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--keyfile-size 16 \
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--key-slot 8 \
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"$IMAGE_DETACHED" "$IMAGE_DETACHED_KEYFILE2"
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# Prepare a couple of dummy devices we'll store a copy of the detached header
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# and one of the keys on to test if systemd-cryptsetup correctly mounts them
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# when necessary
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STORE_IMAGE="$WORKDIR/store.img"
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truncate -s 64M "$STORE_IMAGE"
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STORE_LOOP="$(losetup --show --find --partscan "$STORE_IMAGE")"
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sfdisk "$STORE_LOOP" <<EOF
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label: gpt
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type=0FC63DAF-8483-4772-8E79-3D69D8477DE4 name=header_store size=32M
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type=0FC63DAF-8483-4772-8E79-3D69D8477DE4 name=keyfile_store
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EOF
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udevadm settle --timeout=30
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mkdir -p /mnt
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mkfs.ext4 -L header_store "/dev/disk/by-partlabel/header_store"
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mount "/dev/disk/by-partlabel/header_store" /mnt
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cp "$IMAGE_DETACHED_HEADER" /mnt/header
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umount /mnt
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mkfs.ext4 -L keyfile_store "/dev/disk/by-partlabel/keyfile_store"
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mount "/dev/disk/by-partlabel/keyfile_store" /mnt
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cp "$IMAGE_DETACHED_KEYFILE2" /mnt/keyfile
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umount /mnt
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udevadm settle --timeout=30
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# Prepare our test crypttab
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[[ -e /etc/crypttab ]] && cp -fv /etc/crypttab /tmp/crypttab.bak
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cat >/etc/crypttab <<EOF
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# headless should translate to headless=1
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empty_key $IMAGE_EMPTY $IMAGE_EMPTY_KEYFILE headless,x-systemd.device-timeout=1m
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empty_key_erase $IMAGE_EMPTY $IMAGE_EMPTY_KEYFILE_ERASE headless=1,keyfile-erase=1
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empty_key_erase_fail $IMAGE_EMPTY $IMAGE_EMPTY_KEYFILE_ERASE_FAIL headless=1,keyfile-erase=1,keyfile-offset=4
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# Empty passphrase without try-empty-password(=yes) shouldn't work
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empty_fail0 $IMAGE_EMPTY - headless=1
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empty_fail1 $IMAGE_EMPTY - headless=1,try-empty-password=0
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empty0 $IMAGE_EMPTY - headless=1,try-empty-password
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empty1 $IMAGE_EMPTY - headless=1,try-empty-password=1
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# This one expects the key to be under /{etc,run}/cryptsetup-keys.d/empty_nokey.key
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empty_nokey $IMAGE_EMPTY - headless=1
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detached $IMAGE_DETACHED $IMAGE_DETACHED_KEYFILE headless=1,header=$IMAGE_DETACHED_HEADER,keyfile-offset=32,keyfile-size=16
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detached_store0 $IMAGE_DETACHED $IMAGE_DETACHED_KEYFILE headless=1,header=/header:LABEL=header_store,keyfile-offset=32,keyfile-size=16
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detached_store1 $IMAGE_DETACHED /keyfile:LABEL=keyfile_store headless=1,header=$IMAGE_DETACHED_HEADER
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detached_store2 $IMAGE_DETACHED /keyfile:LABEL=keyfile_store headless=1,header=/header:LABEL=header_store
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detached_fail0 $IMAGE_DETACHED $IMAGE_DETACHED_KEYFILE headless=1,header=$IMAGE_DETACHED_HEADER,keyfile-offset=32
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detached_fail1 $IMAGE_DETACHED $IMAGE_DETACHED_KEYFILE headless=1,header=$IMAGE_DETACHED_HEADER
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detached_fail2 $IMAGE_DETACHED $IMAGE_DETACHED_KEYFILE headless=1
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detached_fail3 $IMAGE_DETACHED $IMAGE_DETACHED_KEYFILE headless=1,header=$IMAGE_DETACHED_HEADER,keyfile-offset=16,keyfile-size=16
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detached_fail4 $IMAGE_DETACHED $IMAGE_DETACHED_KEYFILE headless=1,header=$IMAGE_DETACHED_HEADER,keyfile-offset=32,keyfile-size=8
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detached_slot0 $IMAGE_DETACHED $IMAGE_DETACHED_KEYFILE2 headless=1,header=$IMAGE_DETACHED_HEADER
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detached_slot1 $IMAGE_DETACHED $IMAGE_DETACHED_KEYFILE2 headless=1,header=$IMAGE_DETACHED_HEADER,key-slot=8
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detached_slot_fail $IMAGE_DETACHED $IMAGE_DETACHED_KEYFILE2 headless=1,header=$IMAGE_DETACHED_HEADER,key-slot=0
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EOF
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# Temporarily drop luks.name=/luks.uuid= from the kernel command line, as it makes
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# systemd-cryptsetup-generator ignore mounts from /etc/crypttab that are not also
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# specified on the kernel command line
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sed -r 's/luks.(name|uuid)=[^[:space:]+]//' /proc/cmdline >/tmp/cmdline.tmp
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mount --bind /tmp/cmdline.tmp /proc/cmdline
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# Run the systemd-cryptsetup-generator once explicitly, to collect coverage,
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# as during daemon-reload we run generators in a sandbox
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mkdir -p /tmp/systemd-cryptsetup-generator.out
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/usr/lib/systemd/system-generators/systemd-cryptsetup-generator /tmp/systemd-cryptsetup-generator.out/
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systemctl daemon-reload
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systemctl list-unit-files "systemd-cryptsetup@*"
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cryptsetup_start_and_check empty_key
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test -e "$IMAGE_EMPTY_KEYFILE_ERASE"
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cryptsetup_start_and_check empty_key_erase
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test ! -e "$IMAGE_EMPTY_KEYFILE_ERASE"
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test -e "$IMAGE_EMPTY_KEYFILE_ERASE_FAIL"
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cryptsetup_start_and_check -f empty_key_erase_fail
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test ! -e "$IMAGE_EMPTY_KEYFILE_ERASE_FAIL"
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cryptsetup_start_and_check -f empty_fail{0..1}
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cryptsetup_start_and_check empty{0..1}
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# First, check if we correctly fail without any key
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cryptsetup_start_and_check -f empty_nokey
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# And now provide the key via /{etc,run}/cryptsetup-keys.d/
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mkdir -p /run/cryptsetup-keys.d
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cp "$IMAGE_EMPTY_KEYFILE" /run/cryptsetup-keys.d/empty_nokey.key
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cryptsetup_start_and_check empty_nokey
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cryptsetup_start_and_check detached
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cryptsetup_start_and_check detached_store{0..2}
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cryptsetup_start_and_check -f detached_fail{0..4}
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cryptsetup_start_and_check detached_slot{0..1}
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cryptsetup_start_and_check -f detached_slot_fail
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touch /testok
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