From d1aa700966d042112f28b493ff530574c1728496 Mon Sep 17 00:00:00 2001 From: Krishan Gopal Saraswat Date: Tue, 23 Jan 2024 10:18:41 +0530 Subject: [PATCH] Added boot aggregate test to validate output Added testcase to validate the output for boot aggregate from two different files ascii_runtime_measurements and binary_bios_measurements. Signed-off-by: Krishan Gopal Saraswat --- security/grub-extend-pcr.py | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/security/grub-extend-pcr.py b/security/grub-extend-pcr.py index 11afc4a98..d2e6047be 100644 --- a/security/grub-extend-pcr.py +++ b/security/grub-extend-pcr.py @@ -91,3 +91,26 @@ def test_tsseventextend(self): pcr8_flag = pcr9_flag = False if not (pcr8_flag and pcr9_flag): self.fail("PCR 8 and/or PCR 9 not having correct values.") + + def test_boot_aggregate(self): + ''' + Output validation for boot aggregate from two different files + ascii_runtime_measurements and binary_bios_measurements + ''' + ascii_file = "/sys/kernel/security/ima/ascii_runtime_measurements" + binary_bios_file = "/sys/kernel/security/tpm0/binary_bios_measurements" + if not os.path.exists(ascii_file): + self.cancel("ascii_runtime_measurements files doesn't exist") + if not os.path.exists(binary_bios_file): + self.cancel("binary_bios_file file doesn't exist") + ascii_output = genio.read_file(ascii_file).splitlines() + ascii_output = ascii_output[0].split(" ") + for att in ascii_output: + if "sha" in att: + arm_value = att.split(":")[-1] + break + cmd1 = "tsseventextend -if {0} -sim -pcrmax 9".format(binary_bios_file) + tssevent_output = process.system_output(cmd1, ignore_status=True).decode().splitlines()[-1] + tssevent_value = tssevent_output.split(":")[1].strip().replace(" ", "") + if arm_value != tssevent_value: + self.fail("Boot aggregate output not matched from ascii and binary measurements")