X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=test%2Fpy%2Ftests%2Ftest_vboot.py;h=e9cbd57fbab7c1ac3fa943328a566ef45080f059;hb=1703fbefd9183fffd76f4744a73f5ca9daef6313;hp=6e62820743fe03b63c3c4ce8a1885587b04e53c1;hpb=cbe7706ab8aab06c18edaa9b120371f9c8012728;p=u-boot

diff --git a/test/py/tests/test_vboot.py b/test/py/tests/test_vboot.py
index 6e62820743..e9cbd57fba 100644
--- a/test/py/tests/test_vboot.py
+++ b/test/py/tests/test_vboot.py
@@ -1,6 +1,5 @@
-# Copyright (c) 2016, Google Inc.
-#
 # SPDX-License-Identifier:	GPL-2.0+
+# Copyright (c) 2016, Google Inc.
 #
 # U-Boot Verified Boot Test
 
@@ -27,10 +26,15 @@ Tests run with both SHA1 and SHA256 hashing.
 
 import pytest
 import sys
+import struct
 import u_boot_utils as util
 
 @pytest.mark.boardspec('sandbox')
 @pytest.mark.buildconfigspec('fit_signature')
+@pytest.mark.requiredtool('dtc')
+@pytest.mark.requiredtool('fdtget')
+@pytest.mark.requiredtool('fdtput')
+@pytest.mark.requiredtool('openssl')
 def test_vboot(u_boot_console):
     """Test verified boot signing with mkimage and verification with 'bootm'.
 
@@ -102,6 +106,26 @@ def test_vboot(u_boot_console):
         util.run_and_log(cons, [mkimage, '-F', '-k', tmpdir, '-K', dtb,
                                 '-r', fit])
 
+    def replace_fit_totalsize(size):
+        """Replace FIT header's totalsize with something greater.
+
+        The totalsize must be less than or equal to FIT_SIGNATURE_MAX_SIZE.
+        If the size is greater, the signature verification should return false.
+
+        Args:
+            size: The new totalsize of the header
+
+        Returns:
+            prev_size: The previous totalsize read from the header
+        """
+        total_size = 0
+        with open(fit, 'r+b') as handle:
+            handle.seek(4)
+            total_size = handle.read(4)
+            handle.seek(4)
+            handle.write(struct.pack(">I", size))
+        return struct.unpack(">I", total_size)[0]
+
     def test_with_algo(sha_algo):
         """Test verified boot with the given hash algorithm.
 
@@ -143,6 +167,18 @@ def test_vboot(u_boot_console):
         util.run_and_log(cons, [fit_check_sign, '-f', fit, '-k', tmpdir,
                                 '-k', dtb])
 
+        # Replace header bytes
+        bcfg = u_boot_console.config.buildconfig
+        max_size = int(bcfg.get('config_fit_signature_max_size', 0x10000000), 0)
+        existing_size = replace_fit_totalsize(max_size + 1)
+        run_bootm(sha_algo, 'Signed config with bad hash', 'Bad Data Hash', False)
+        cons.log.action('%s: Check overflowed FIT header totalsize' % sha_algo)
+
+        # Replace with existing header bytes
+        replace_fit_totalsize(existing_size)
+        run_bootm(sha_algo, 'signed config', 'dev+', True)
+        cons.log.action('%s: Check default FIT header totalsize' % sha_algo)
+
         # Increment the first byte of the signature, which should cause failure
         sig = util.run_and_log(cons, 'fdtget -t bx %s %s value' %
                                (fit, sig_node))
@@ -174,8 +210,8 @@ def test_vboot(u_boot_console):
     public_exponent = 65537
     util.run_and_log(cons, 'openssl genpkey -algorithm RSA -out %sdev.key '
                      '-pkeyopt rsa_keygen_bits:2048 '
-                     '-pkeyopt rsa_keygen_pubexp:%d '
-                     '2>/dev/null'  % (tmpdir, public_exponent))
+                     '-pkeyopt rsa_keygen_pubexp:%d' %
+                     (tmpdir, public_exponent))
 
     # Create a certificate containing the public key
     util.run_and_log(cons, 'openssl req -batch -new -x509 -key %sdev.key -out '