efi_loader, pytest: add UEFI secure boot tests (authenticated variables)

Provide a couple of test cases for variable authentication.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>

diff --git a/test/py/tests/test_efi_secboot/test_authvar.py b/test/py/tests/test_efi_secboot/test_authvar.py
new file mode 100644 (file)
index 0000000..55dcaa9
--- /dev/null
+++ b/test/py/tests/test_efi_secboot/test_authvar.py
@@ -0,0 +1,282 @@
+# SPDX-License-Identifier:      GPL-2.0+
+# Copyright (c) 2019, Linaro Limited
+# Author: AKASHI Takahiro <takahiro.akashi@linaro.org>
+#
+# U-Boot UEFI: Variable Authentication Test
+
+"""
+This test verifies variable authentication
+"""
+
+import pytest
+import re
+from defs import *
+
+@pytest.mark.boardspec('sandbox')
+@pytest.mark.buildconfigspec('efi_secure_boot')
+@pytest.mark.buildconfigspec('cmd_fat')
+@pytest.mark.buildconfigspec('cmd_nvedit_efi')
+@pytest.mark.slow
+class TestEfiAuthVar(object):
+    def test_efi_var_auth1(self, u_boot_console, efi_boot_env):
+        """
+        Test Case 1 - Install signature database
+        """
+        u_boot_console.restart_uboot()
+        disk_img = efi_boot_env
+        with u_boot_console.log.section('Test Case 1a'):
+            # Test Case 1a, Initial secure state
+            output = u_boot_console.run_command_list([
+                'host bind 0 %s' % disk_img,
+                'printenv -e SecureBoot'])
+            assert('00000000: 00' in ''.join(output))
+
+            output = u_boot_console.run_command(
+                'printenv -e SetupMode')
+            assert('00000000: 01' in output)
+
+        with u_boot_console.log.section('Test Case 1b'):
+            # Test Case 1b, PK without AUTHENTICATED_WRITE_ACCESS
+            output = u_boot_console.run_command_list([
+                'fatload host 0:1 4000000 PK.auth',
+                'setenv -e -nv -bs -rt -i 4000000,$filesize PK'])
+            assert(re.search('Failed to set EFI variable', ''.join(output)))
+
+        with u_boot_console.log.section('Test Case 1c'):
+            # Test Case 1c, install PK
+            output = u_boot_console.run_command_list([
+                'fatload host 0:1 4000000 PK.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize PK',
+                'printenv -e -n PK'])
+            assert(re.search('PK:', ''.join(output)))
+
+            output = u_boot_console.run_command(
+                'printenv -e SecureBoot')
+            assert('00000000: 01' in output)
+            output = u_boot_console.run_command(
+                'printenv -e SetupMode')
+            assert('00000000: 00' in output)
+
+        with u_boot_console.log.section('Test Case 1d'):
+            # Test Case 1d, db/dbx without KEK
+            output = u_boot_console.run_command_list([
+                'fatload host 0:1 4000000 db.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize db'])
+            assert(re.search('Failed to set EFI variable', ''.join(output)))
+
+            output = u_boot_console.run_command_list([
+                'fatload host 0:1 4000000 db.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize dbx'])
+            assert(re.search('Failed to set EFI variable', ''.join(output)))
+
+        with u_boot_console.log.section('Test Case 1e'):
+            # Test Case 1e, install KEK
+            output = u_boot_console.run_command_list([
+                'fatload host 0:1 4000000 KEK.auth',
+                'setenv -e -nv -bs -rt -i 4000000,$filesize KEK'])
+            assert(re.search('Failed to set EFI variable', ''.join(output)))
+
+            output = u_boot_console.run_command_list([
+                'fatload host 0:1 4000000 KEK.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize KEK',
+                'printenv -e -n KEK'])
+            assert(re.search('KEK:', ''.join(output)))
+
+            output = u_boot_console.run_command(
+                'printenv -e SecureBoot')
+            assert('00000000: 01' in output)
+
+        with u_boot_console.log.section('Test Case 1f'):
+            # Test Case 1f, install db
+            output = u_boot_console.run_command_list([
+                'fatload host 0:1 4000000 db.auth',
+                'setenv -e -nv -bs -rt -i 4000000,$filesize db'])
+            assert(re.search('Failed to set EFI variable', ''.join(output)))
+
+            output = u_boot_console.run_command_list([
+                'fatload host 0:1 4000000 db.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize db',
+                'printenv -e -n -guid d719b2cb-3d3a-4596-a3bc-dad00e67656f db'])
+            assert(not re.search('Failed to set EFI variable', ''.join(output)))
+            assert(re.search('db:', ''.join(output)))
+
+            output = u_boot_console.run_command(
+                'printenv -e SecureBoot')
+            assert('00000000: 01' in output)
+
+        with u_boot_console.log.section('Test Case 1g'):
+            # Test Case 1g, install dbx
+            output = u_boot_console.run_command_list([
+                'fatload host 0:1 4000000 db.auth',
+                'setenv -e -nv -bs -rt -i 4000000,$filesize db'])
+            assert(re.search('Failed to set EFI variable', ''.join(output)))
+
+            output = u_boot_console.run_command_list([
+                'fatload host 0:1 4000000 db.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize db',
+                'printenv -e -n -guid d719b2cb-3d3a-4596-a3bc-dad00e67656f db'])
+            assert(not re.search('Failed to set EFI variable', ''.join(output)))
+            assert(re.search('db:', ''.join(output)))
+
+            output = u_boot_console.run_command(
+                'printenv -e SecureBoot')
+            assert('00000000: 01' in output)
+
+    def test_efi_var_auth2(self, u_boot_console, efi_boot_env):
+        """
+        Test Case 2 - Update database by overwriting
+        """
+        u_boot_console.restart_uboot()
+        disk_img = efi_boot_env
+        with u_boot_console.log.section('Test Case 2a'):
+            # Test Case 2a, update without AUTHENTICATED_WRITE_ACCESS
+            output = u_boot_console.run_command_list([
+                'host bind 0 %s' % disk_img,
+                'fatload host 0:1 4000000 PK.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize PK',
+                'fatload host 0:1 4000000 KEK.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize KEK',
+                'fatload host 0:1 4000000 db.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize db',
+                'printenv -e -n -guid d719b2cb-3d3a-4596-a3bc-dad00e67656f db'])
+            assert(not re.search('Failed to set EFI variable', ''.join(output)))
+            assert(re.search('db:', ''.join(output)))
+
+            output = u_boot_console.run_command_list([
+                'fatload host 0:1 4000000 db1.auth',
+                'setenv -e -nv -bs -rt -i 4000000,$filesize db'])
+            assert(re.search('Failed to set EFI variable', ''.join(output)))
+
+        with u_boot_console.log.section('Test Case 2b'):
+            # Test Case 2b, update without correct signature
+            output = u_boot_console.run_command_list([
+                'fatload host 0:1 4000000 db.esl',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize db'])
+            assert(re.search('Failed to set EFI variable', ''.join(output)))
+
+        with u_boot_console.log.section('Test Case 2c'):
+            # Test Case 2c, update with correct signature
+            output = u_boot_console.run_command_list([
+                'fatload host 0:1 4000000 db1.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize db',
+                'printenv -e -n -guid d719b2cb-3d3a-4596-a3bc-dad00e67656f db'])
+            assert(not re.search('Failed to set EFI variable', ''.join(output)))
+            assert(re.search('db:', ''.join(output)))
+
+    def test_efi_var_auth3(self, u_boot_console, efi_boot_env):
+        """
+        Test Case 3 - Append database
+        """
+        u_boot_console.restart_uboot()
+        disk_img = efi_boot_env
+        with u_boot_console.log.section('Test Case 3a'):
+            # Test Case 3a, update without AUTHENTICATED_WRITE_ACCESS
+            output = u_boot_console.run_command_list([
+                'host bind 0 %s' % disk_img,
+                'fatload host 0:1 4000000 PK.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize PK',
+                'fatload host 0:1 4000000 KEK.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize KEK',
+                'fatload host 0:1 4000000 db.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize db',
+                'printenv -e -n -guid d719b2cb-3d3a-4596-a3bc-dad00e67656f db'])
+            assert(not re.search('Failed to set EFI variable', ''.join(output)))
+            assert(re.search('db:', ''.join(output)))
+
+            output = u_boot_console.run_command_list([
+                'fatload host 0:1 4000000 db1.auth',
+                'setenv -e -nv -bs -rt -a -i 4000000,$filesize db'])
+            assert(re.search('Failed to set EFI variable', ''.join(output)))
+
+        with u_boot_console.log.section('Test Case 3b'):
+            # Test Case 3b, update without correct signature
+            output = u_boot_console.run_command_list([
+                'fatload host 0:1 4000000 db.esl',
+                'setenv -e -nv -bs -rt -at -a -i 4000000,$filesize db'])
+            assert(re.search('Failed to set EFI variable', ''.join(output)))
+
+        with u_boot_console.log.section('Test Case 3c'):
+            # Test Case 3c, update with correct signature
+            output = u_boot_console.run_command_list([
+                'fatload host 0:1 4000000 db1.auth',
+                'setenv -e -nv -bs -rt -at -a -i 4000000,$filesize db',
+                'printenv -e -n -guid d719b2cb-3d3a-4596-a3bc-dad00e67656f db'])
+            assert(not re.search('Failed to set EFI variable', ''.join(output)))
+            assert(re.search('db:', ''.join(output)))
+
+    def test_efi_var_auth4(self, u_boot_console, efi_boot_env):
+        """
+        Test Case 4 - Delete database without authentication
+        """
+        u_boot_console.restart_uboot()
+        disk_img = efi_boot_env
+        with u_boot_console.log.section('Test Case 4a'):
+            # Test Case 4a, update without AUTHENTICATED_WRITE_ACCESS
+            output = u_boot_console.run_command_list([
+                'host bind 0 %s' % disk_img,
+                'fatload host 0:1 4000000 PK.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize PK',
+                'fatload host 0:1 4000000 KEK.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize KEK',
+                'fatload host 0:1 4000000 db.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize db',
+                'printenv -e -n -guid d719b2cb-3d3a-4596-a3bc-dad00e67656f db'])
+            assert(not re.search('Failed to set EFI variable', ''.join(output)))
+            assert(re.search('db:', ''.join(output)))
+
+            output = u_boot_console.run_command_list([
+                'setenv -e -nv -bs -rt db',
+                'printenv -e -n -guid d719b2cb-3d3a-4596-a3bc-dad00e67656f db'])
+            assert(re.search('Failed to set EFI variable', ''.join(output)))
+            assert(re.search('db:', ''.join(output)))
+
+        with u_boot_console.log.section('Test Case 4b'):
+            # Test Case 4b, update without correct signature/data
+            output = u_boot_console.run_command_list([
+                'setenv -e -nv -bs -rt -at db',
+                'printenv -e -n -guid d719b2cb-3d3a-4596-a3bc-dad00e67656f db'])
+            assert(re.search('Failed to set EFI variable', ''.join(output)))
+            assert(re.search('db:', ''.join(output)))
+
+    def test_efi_var_auth5(self, u_boot_console, efi_boot_env):
+        """
+        Test Case 5 - Uninstall(delete) PK
+        """
+        u_boot_console.restart_uboot()
+        disk_img = efi_boot_env
+        with u_boot_console.log.section('Test Case 5a'):
+            # Test Case 5a, Uninstall PK without correct signature
+            output = u_boot_console.run_command_list([
+                'host bind 0 %s' % disk_img,
+                'fatload host 0:1 4000000 PK.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize PK',
+                'fatload host 0:1 4000000 KEK.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize KEK',
+                'fatload host 0:1 4000000 db.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize db',
+                'printenv -e -n PK'])
+            assert(not re.search('Failed to set EFI variable', ''.join(output)))
+            assert(re.search('PK:', ''.join(output)))
+
+            output = u_boot_console.run_command_list([
+                'fatload host 0:1 4000000 PK_null.esl',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize PK',
+                'printenv -e -n PK'])
+            assert(re.search('Failed to set EFI variable', ''.join(output)))
+            assert(re.search('PK:', ''.join(output)))
+
+        with u_boot_console.log.section('Test Case 5b'):
+            # Test Case 5b, Uninstall PK with correct signature
+            output = u_boot_console.run_command_list([
+                'fatload host 0:1 4000000 PK_null.auth',
+                'setenv -e -nv -bs -rt -at -i 4000000,$filesize PK',
+                'printenv -e -n PK'])
+            assert(not re.search('Failed to set EFI variable', ''.join(output)))
+            assert(re.search('\"PK\" not defined', ''.join(output)))
+
+            output = u_boot_console.run_command(
+                'printenv -e SecureBoot')
+            assert('00000000: 00' in output)
+            output = u_boot_console.run_command(
+                'printenv -e SetupMode')
+            assert('00000000: 01' in output)