From 994451b5e3010e2b12c01522bed9cc246304696e Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Fri, 16 Dec 2022 16:25:34 +0100
Subject: [PATCH] test: add simple integration test for checking PCR extension
 works as it should

(cherry picked from commit f44ed151c6c203f01a9fe8623b282ecd4ef2e0a9)

Related: RHEL-16182
---
 test/TEST-70-TPM2/test.sh  |  1 +
 test/units/testsuite-70.sh | 30 ++++++++++++++++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/test/TEST-70-TPM2/test.sh b/test/TEST-70-TPM2/test.sh
index 7c19821ad2..f448a4a5f1 100755
--- a/test/TEST-70-TPM2/test.sh
+++ b/test/TEST-70-TPM2/test.sh
@@ -20,6 +20,7 @@ test_append_files() {
         install_dmevent
         generate_module_dependencies
         inst_binary tpm2_pcrextend
+        inst_binary tpm2_pcrread
         inst_binary openssl
 }
 
diff --git a/test/units/testsuite-70.sh b/test/units/testsuite-70.sh
index 89cd2a3f82..3b4d66b686 100755
--- a/test/units/testsuite-70.sh
+++ b/test/units/testsuite-70.sh
@@ -155,6 +155,36 @@ else
     echo "/usr/lib/systemd/systemd-measure or PCR sysfs files not found, skipping signed PCR policy test case"
 fi
 
+if [ -e /usr/lib/systemd/systemd-pcrphase ] && \
+       [ -f /sys/class/tpm/tpm0/pcr-sha256/11 ]; then
+
+    # Let's measure the machine ID
+    tpm2_pcrread sha256:15 -Q -o /tmp/oldpcr15
+    mv /etc/machine-id /etc/machine-id.save
+    echo 994013bf23864ee7992eab39a96dd3bb >/etc/machine-id
+    SYSTEMD_FORCE_MEASURE=1 /usr/lib/systemd/systemd-pcrphase --machine-id
+    mv /etc/machine-id.save /etc/machine-id
+    tpm2_pcrread sha256:15 -Q -o /tmp/newpcr15
+
+    # And check it matches expectations
+    ( cat /tmp/oldpcr15 ;
+      echo -n "machine-id:994013bf23864ee7992eab39a96dd3bb" | openssl dgst -binary -sha256 ) | openssl dgst -binary -sha256 | cmp - /tmp/newpcr15
+
+    rm /tmp/oldpcr15 /tmp/newpcr15
+
+    # And similar for the boot phase measurement into PCR 11
+    tpm2_pcrread sha256:11 -Q -o /tmp/oldpcr11
+    SYSTEMD_FORCE_MEASURE=1 /usr/lib/systemd/systemd-pcrphase foobar
+    tpm2_pcrread sha256:11 -Q -o /tmp/newpcr11
+
+    ( cat /tmp/oldpcr11 ;
+      echo -n "foobar" | openssl dgst -binary -sha256 ) | openssl dgst -binary -sha256 | cmp - /tmp/newpcr11
+
+    rm /tmp/oldpcr11 /tmp/newpcr11
+else
+    echo "/usr/lib/systemd/systemd-pcrphase or PCR sysfs files not found, skipping PCR extension test case"
+fi
+
 echo OK >/testok
 
 exit 0