ci: add testcase for multi-profile UKIs

This tests the whole shebang:

1. That ukify can generate them properly
2. That systemd-boot can dissect them properly
3. That systemd-stub can accept profile selection propery
4. That the profile information ends up in /run/systemd/stub/ properly
5. That systemd-measure correctly calculates the expected PCR 11 values
   for each profile and that we can unlock a public-key bound LUKS
   volume with it

test/TEST-86-MULTI-PROFILE-UKI/Makefile

@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+all setup run clean clean-again:
+	true
+
+.PHONY: all setup run clean clean-again

test/TEST-86-MULTI-PROFILE-UKI/meson.build

@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+integration_tests += [
+        integration_test_template + {
+                'name' : fs.name(meson.current_source_dir()),
+                'storage' : 'persistent',
+                'vm' : true,
+                'firmware' : 'auto',
+        },
+]

test/TEST-86-MULTI-PROFILE-UKI/test.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: LGPL-2.1-or-later
+set -e
+
+TEST_DESCRIPTION="Test Multi-Profile UKI Boots"
+
+# shellcheck source=test/test-functions
+. "${TEST_BASE_DIR:?}/test-functions"
+
+do_test "$@"

test/meson.build

@@ -376,6 +376,7 @@ foreach dirname : [
         'TEST-83-BTRFS',
         'TEST-84-STORAGETM',
         'TEST-85-NETWORK',
+        'TEST-86-MULTI-PROFILE-UKI',
 ]
         subdir(dirname)
 endforeach

test/units/TEST-86-MULTI-PROFILE-UKI.sh

@@ -0,0 +1,81 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: LGPL-2.1-or-later
+set -eux
+set -o pipefail
+
+export SYSTEMD_LOG_LEVEL=debug
+
+bootctl
+
+CURRENT_UKI=$(bootctl --print-stub-path)
+
+echo "CURRENT UKI ($CURRENT_UKI):"
+ukify inspect "$CURRENT_UKI"
+if test -f /run/systemd/stub/profile; then
+    echo "CURRENT PROFILE:"
+    cat /run/systemd/stub/profile
+fi
+echo "CURRENT MEASUREMENT:"
+/usr/lib/systemd/systemd-measure --current
+if test -f /run/systemd/tpm2-pcr-signature.json ; then
+    echo "CURRENT SIGNATURE:"
+    jq < /run/systemd/tpm2-pcr-signature.json
+fi
+
+echo "CURRENT EVENT LOG + PCRS:"
+/usr/lib/systemd/systemd-pcrlock
+
+if test ! -f /run/systemd/stub/profile; then
+    openssl genpkey -algorithm RSA -pkeyopt rsa_keygen_bits:2048 -out /root/pcrsign.private.pem
+    openssl rsa -pubout -in /root/pcrsign.private.pem -out /root/pcrsign.public.pem
+
+    ukify build --extend="$CURRENT_UKI" --output=/tmp/extended0.efi --profile='ID=profile0
+TITLE="Profile Zero"' --measure-base="$CURRENT_UKI" --pcr-private-key=/root/pcrsign.private.pem --pcr-public-key=/root/pcrsign.public.pem --pcr-banks=sha256,sha384,sha512
+
+    ukify build --extend=/tmp/extended0.efi --output=/tmp/extended1.efi --profile='ID=profile1
+TITLE="Profile One"' --measure-base=/tmp/extended0.efi --cmdline="testprofile1=1 $(cat /proc/cmdline)" --pcr-private-key=/root/pcrsign.private.pem --pcr-public-key=/root/pcrsign.public.pem --pcr-banks=sha256,sha384,sha512
+
+    ukify build --extend=/tmp/extended1.efi --output=/tmp/extended2.efi --profile='ID=profile2
+TITLE="Profile Two"' --measure-base=/tmp/extended1.efi --cmdline="testprofile2=1 $(cat /proc/cmdline)" --pcr-private-key=/root/pcrsign.private.pem --pcr-public-key=/root/pcrsign.public.pem --pcr-banks=sha256,sha384,sha512
+
+    echo "EXTENDED UKI:"
+    ukify inspect /tmp/extended2.efi
+    rm /tmp/extended0.efi /tmp/extended1.efi
+    mv /tmp/extended2.efi "$CURRENT_UKI"
+
+    # Prepare a disk image, locked to the PCR measurements of the UKI we just generated
+    truncate -s 32M /root/encrypted.raw
+    echo -n "geheim" > /root/encrypted.secret
+    cryptsetup luksFormat -q --pbkdf pbkdf2 --pbkdf-force-iterations 1000 --use-urandom /root/encrypted.raw --key-file=/root/encrypted.secret
+    systemd-cryptenroll --tpm2-device=auto --tpm2-pcrs= --tpm2-public-key=/root/pcrsign.public.pem --unlock-key-file=/root/encrypted.secret /root/encrypted.raw
+    rm -f /root/encrypted.secret
+
+    reboot
+    exit 0
+else
+    # shellcheck source=/dev/null
+    . /run/systemd/stub/profile
+
+    # Validate that with the current profile we can fulfill the PCR 11 policy
+    systemd-cryptsetup attach multiprof /root/encrypted.raw - tpm2-device=auto,headless=1
+    systemd-cryptsetup detach multiprof
+
+    if [ "$ID" = "profile0" ]; then
+        grep -v testprofile /proc/cmdline
+        echo "default $(basename "$CURRENT_UKI")@profile1" > "$(bootctl -p)/loader/loader.conf"
+        reboot
+        exit 0
+    elif [ "$ID" = "profile1" ]; then
+        grep testprofile1=1 /proc/cmdline
+        echo "default $(basename "$CURRENT_UKI")@profile2" > "$(bootctl -p)/loader/loader.conf"
+        reboot
+        exit 0
+    elif [ "$ID" = "profile2" ]; then
+        grep testprofile2=1 /proc/cmdline
+        rm /root/encrypted.raw
+    else
+        exit 1
+    fi
+fi
+
+touch /testok