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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <iostream>
#include <base/files/file_util.h>
#include <base/strings/string_util.h>
#include <base/strings/stringprintf.h>
#include "avb_unittest_util.h"
#include "fake_avb_ops.h"
namespace avb {
class AvbSlotVerifyTest : public BaseAvbToolTest,
public FakeAvbOpsDelegateWithDefaults {
public:
AvbSlotVerifyTest() {}
virtual void SetUp() override {
BaseAvbToolTest::SetUp();
ops_.set_delegate(this);
ops_.set_partition_dir(testdir_);
ops_.set_stored_rollback_indexes({{0, 0}, {1, 0}, {2, 0}, {3, 0}});
ops_.set_stored_is_device_unlocked(false);
}
void CmdlineWithHashtreeVerification(bool hashtree_verification_on);
void CmdlineWithChainedHashtreeVerification(bool hashtree_verification_on);
void VerificationDisabled(bool use_avbctl,
bool preload,
bool has_system_partition);
};
TEST_F(AvbSlotVerifyTest, Basic) {
GenerateVBMetaImage("vbmeta_a.img",
"SHA256_RSA2048",
0,
base::FilePath("test/data/testkey_rsa2048.pem"),
"--internal_release_string \"\"");
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"boot", NULL};
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
EXPECT_EQ(
"androidboot.vbmeta.device=PARTUUID=1234-fake-guid-for:vbmeta_a "
"androidboot.vbmeta.avb_version=1.1 "
"androidboot.vbmeta.device_state=locked "
"androidboot.vbmeta.hash_alg=sha256 androidboot.vbmeta.size=1152 "
"androidboot.vbmeta.digest="
"4161a7e655eabe16c3fe714de5d43736e7c0a190cf08d36c946d2509ce071e4d "
"androidboot.vbmeta.invalidate_on_error=yes "
"androidboot.veritymode=enforcing",
std::string(slot_data->cmdline));
uint8_t vbmeta_digest[AVB_SHA256_DIGEST_SIZE];
avb_slot_verify_data_calculate_vbmeta_digest(
slot_data, AVB_DIGEST_TYPE_SHA256, vbmeta_digest);
EXPECT_EQ("4161a7e655eabe16c3fe714de5d43736e7c0a190cf08d36c946d2509ce071e4d",
mem_to_hexstring(vbmeta_digest, AVB_SHA256_DIGEST_SIZE));
avb_slot_verify_data_free(slot_data);
EXPECT_EQ("4161a7e655eabe16c3fe714de5d43736e7c0a190cf08d36c946d2509ce071e4d",
CalcVBMetaDigest("vbmeta_a.img", "sha256"));
}
TEST_F(AvbSlotVerifyTest, BasicSha512) {
GenerateVBMetaImage("vbmeta_a.img",
"SHA512_RSA2048",
0,
base::FilePath("test/data/testkey_rsa2048.pem"),
"--internal_release_string \"\"");
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"boot", NULL};
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
EXPECT_EQ(
"androidboot.vbmeta.device=PARTUUID=1234-fake-guid-for:vbmeta_a "
"androidboot.vbmeta.avb_version=1.1 "
"androidboot.vbmeta.device_state=locked "
"androidboot.vbmeta.hash_alg=sha512 androidboot.vbmeta.size=1152 "
"androidboot.vbmeta.digest="
"cb913d2f1a884f4e04c1db5bb181f3133fd16ac02fb367a20ef0776c0b07b3656ad1f081"
"e01932cf70f38b8960877470b448f1588dff022808387cc52fa77e77 "
"androidboot.vbmeta.invalidate_on_error=yes "
"androidboot.veritymode=enforcing",
std::string(slot_data->cmdline));
uint8_t vbmeta_digest[AVB_SHA512_DIGEST_SIZE];
avb_slot_verify_data_calculate_vbmeta_digest(
slot_data, AVB_DIGEST_TYPE_SHA512, vbmeta_digest);
EXPECT_EQ(
"cb913d2f1a884f4e04c1db5bb181f3133fd16ac02fb367a20ef0776c0b07b3656ad1f081"
"e01932cf70f38b8960877470b448f1588dff022808387cc52fa77e77",
mem_to_hexstring(vbmeta_digest, AVB_SHA512_DIGEST_SIZE));
avb_slot_verify_data_free(slot_data);
EXPECT_EQ(
"cb913d2f1a884f4e04c1db5bb181f3133fd16ac02fb367a20ef0776c0b07b3656ad1f081"
"e01932cf70f38b8960877470b448f1588dff022808387cc52fa77e77",
CalcVBMetaDigest("vbmeta_a.img", "sha512"));
}
TEST_F(AvbSlotVerifyTest, BasicUnlocked) {
GenerateVBMetaImage("vbmeta_a.img",
"SHA256_RSA2048",
0,
base::FilePath("test/data/testkey_rsa2048.pem"),
"--internal_release_string \"\"");
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
ops_.set_stored_is_device_unlocked(true);
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"boot", NULL};
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
EXPECT_EQ(
"androidboot.vbmeta.device=PARTUUID=1234-fake-guid-for:vbmeta_a "
"androidboot.vbmeta.avb_version=1.1 "
"androidboot.vbmeta.device_state=unlocked "
"androidboot.vbmeta.hash_alg=sha256 androidboot.vbmeta.size=1152 "
"androidboot.vbmeta.digest="
"4161a7e655eabe16c3fe714de5d43736e7c0a190cf08d36c946d2509ce071e4d "
"androidboot.vbmeta.invalidate_on_error=yes "
"androidboot.veritymode=enforcing",
std::string(slot_data->cmdline));
avb_slot_verify_data_free(slot_data);
}
TEST_F(AvbSlotVerifyTest, PreloadedEnabledButNotUsed) {
GenerateVBMetaImage("vbmeta_a.img",
"SHA256_RSA2048",
0,
base::FilePath("test/data/testkey_rsa2048.pem"),
"--internal_release_string \"\"");
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
ops_.enable_get_preloaded_partition();
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"boot", NULL};
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
avb_slot_verify_data_free(slot_data);
}
TEST_F(AvbSlotVerifyTest, SlotDataIsCorrect) {
GenerateVBMetaImage("vbmeta_a.img",
"SHA256_RSA2048",
0,
base::FilePath("test/data/testkey_rsa2048.pem"),
"--internal_release_string \"\"");
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"boot", NULL};
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
avb_slot_verify_data_free(slot_data);
}
TEST_F(AvbSlotVerifyTest, WrongPublicKey) {
GenerateVBMetaImage("vbmeta_a.img",
"SHA256_RSA2048",
0,
base::FilePath("test/data/testkey_rsa2048.pem"),
"--internal_release_string \"\"");
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"boot", NULL};
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_EQ(nullptr, slot_data);
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
avb_slot_verify_data_free(slot_data);
}
TEST_F(AvbSlotVerifyTest, NoImage) {
const char* requested_partitions[] = {"boot", NULL};
AvbSlotVerifyData* slot_data = NULL;
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_IO,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_EQ(nullptr, slot_data);
}
TEST_F(AvbSlotVerifyTest, UnsignedVBMeta) {
GenerateVBMetaImage("vbmeta_a.img",
"",
0,
base::FilePath(""),
"--internal_release_string \"\"");
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"boot", NULL};
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_EQ(nullptr, slot_data);
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
avb_slot_verify_data_free(slot_data);
}
TEST_F(AvbSlotVerifyTest, CorruptedImage) {
GenerateVBMetaImage("vbmeta_a.img",
"SHA256_RSA2048",
0,
base::FilePath("test/data/testkey_rsa2048.pem"),
"--internal_release_string \"\"");
// Corrupt four bytes of data in the end of the image. Since the aux
// data is at the end and this data is signed, this will change the
// value of the computed hash.
uint8_t corrupt_data[4] = {0xff, 0xff, 0xff, 0xff};
EXPECT_EQ(AVB_IO_RESULT_OK,
ops_.avb_ops()->write_to_partition(ops_.avb_ops(),
"vbmeta_a",
-4, // offset from end
sizeof corrupt_data,
corrupt_data));
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"boot", NULL};
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_EQ(nullptr, slot_data);
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
avb_slot_verify_data_free(slot_data);
}
TEST_F(AvbSlotVerifyTest, CorruptedMetadata) {
GenerateVBMetaImage("vbmeta_a.img",
"SHA256_RSA2048",
0,
base::FilePath("test/data/testkey_rsa2048.pem"),
"--internal_release_string \"\"");
// Corrupt four bytes of data in the beginning of the image. Unlike
// the CorruptedImage test-case above (which is valid metadata) this
// will make the metadata invalid and render the slot unbootable
// even if the device is unlocked. Specifically no AvbSlotVerifyData
// is returned.
uint8_t corrupt_data[4] = {0xff, 0xff, 0xff, 0xff};
EXPECT_EQ(AVB_IO_RESULT_OK,
ops_.avb_ops()->write_to_partition(ops_.avb_ops(),
"vbmeta_a",
0, // offset: beginning
sizeof corrupt_data,
corrupt_data));
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"boot", NULL};
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_METADATA,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_EQ(nullptr, slot_data);
}
TEST_F(AvbSlotVerifyTest, RollbackIndex) {
GenerateVBMetaImage("vbmeta_a.img",
"SHA256_RSA2048",
42,
base::FilePath("test/data/testkey_rsa2048.pem"),
"--internal_release_string \"\"");
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"boot", NULL};
// First try with 42 as the stored rollback index - this should
// succeed since the image rollback index is 42 (as set above).
ops_.set_stored_rollback_indexes({{0, 42}});
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
avb_slot_verify_data_free(slot_data);
// Then try with 43 for the stored rollback index - this should fail
// because the image has rollback index 42 which is less than 43.
ops_.set_stored_rollback_indexes({{0, 43}});
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_ROLLBACK_INDEX,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_EQ(nullptr, slot_data);
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_ROLLBACK_INDEX,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
avb_slot_verify_data_free(slot_data);
}
TEST_F(AvbSlotVerifyTest, LoadEntirePartitionIfAllowingVerificationError) {
const size_t boot_partition_size = 16 * 1024 * 1024;
const size_t boot_image_size = 5 * 1024 * 1024;
const size_t new_boot_image_size = 10 * 1024 * 1024;
base::FilePath boot_path = GenerateImage("boot_a.img", boot_image_size);
// If we're allowing verification errors then check that the whole
// partition is loaded. This is needed because in this mode for
// example the "boot" partition might be flashed with another
// boot.img that is larger than what the HashDescriptor in vbmeta
// says.
EXPECT_COMMAND(
0,
"./avbtool add_hash_footer"
" --image %s"
" --rollback_index 0"
" --partition_name boot"
" --partition_size %zd"
" --kernel_cmdline 'cmdline in hash footer $(ANDROID_SYSTEM_PARTUUID)'"
" --salt deadbeef"
" --internal_release_string \"\"",
boot_path.value().c_str(),
boot_partition_size);
GenerateVBMetaImage(
"vbmeta_a.img",
"SHA256_RSA2048",
4,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf(
"--include_descriptors_from_image %s"
" --kernel_cmdline 'cmdline in vbmeta $(ANDROID_BOOT_PARTUUID)'"
" --internal_release_string \"\"",
boot_path.value().c_str()));
// Now replace the boot partition with something bigger and
// different. Because FakeOps's get_size_of_partition() operation
// just returns the file size it means that this is what is returned
// by get_size_of_partition().
//
// Also make sure this image will return a different digest by using
// a non-standard starting byte. This is to force avb_slot_verify()
// to return ERROR_VERIFICATION below.
GenerateImage("boot_a.img", new_boot_image_size, 1 /* start_byte */);
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"boot", NULL};
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
// Check that the loaded partition is actually
// |new_boot_image_size|.
EXPECT_EQ(size_t(1), slot_data->num_loaded_partitions);
EXPECT_EQ("boot",
std::string(slot_data->loaded_partitions[0].partition_name));
EXPECT_EQ(new_boot_image_size, slot_data->loaded_partitions[0].data_size);
avb_slot_verify_data_free(slot_data);
}
TEST_F(AvbSlotVerifyTest, HashDescriptorInVBMeta) {
const size_t boot_partition_size = 16 * 1024 * 1024;
const size_t boot_image_size = 5 * 1024 * 1024;
base::FilePath boot_path = GenerateImage("boot_a.img", boot_image_size);
EXPECT_COMMAND(
0,
"./avbtool add_hash_footer"
" --image %s"
" --rollback_index 0"
" --partition_name boot"
" --partition_size %zd"
" --kernel_cmdline 'cmdline in hash footer $(ANDROID_SYSTEM_PARTUUID)'"
" --salt deadbeef"
" --internal_release_string \"\"",
boot_path.value().c_str(),
boot_partition_size);
GenerateVBMetaImage(
"vbmeta_a.img",
"SHA256_RSA2048",
4,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf(
"--include_descriptors_from_image %s"
" --kernel_cmdline 'cmdline in vbmeta $(ANDROID_BOOT_PARTUUID)'"
" --internal_release_string \"\"",
boot_path.value().c_str()));
EXPECT_EQ(
"Minimum libavb version: 1.0\n"
"Header Block: 256 bytes\n"
"Authentication Block: 320 bytes\n"
"Auxiliary Block: 896 bytes\n"
"Algorithm: SHA256_RSA2048\n"
"Rollback Index: 4\n"
"Flags: 0\n"
"Release String: ''\n"
"Descriptors:\n"
" Kernel Cmdline descriptor:\n"
" Flags: 0\n"
" Kernel Cmdline: 'cmdline in vbmeta "
"$(ANDROID_BOOT_PARTUUID)'\n"
" Kernel Cmdline descriptor:\n"
" Flags: 0\n"
" Kernel Cmdline: 'cmdline in hash footer "
"$(ANDROID_SYSTEM_PARTUUID)'\n"
" Hash descriptor:\n"
" Image Size: 5242880 bytes\n"
" Hash Algorithm: sha256\n"
" Partition Name: boot\n"
" Salt: deadbeef\n"
" Digest: "
"184cb36243adb8b87d2d8c4802de32125fe294ec46753d732144ee65df68a23d\n"
" Flags: 0\n",
InfoImage(vbmeta_image_path_));
EXPECT_COMMAND(0,
"./avbtool erase_footer"
" --image %s",
boot_path.value().c_str());
// With no footer, 'avbtool info_image' should fail (exit status 1).
EXPECT_COMMAND(
1, "./avbtool info_image --image %s", boot_path.value().c_str());
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"boot", NULL};
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
// Now verify the slot data. The vbmeta data should match our
// vbmeta_image_ member.
EXPECT_EQ(size_t(1), slot_data->num_vbmeta_images);
EXPECT_EQ("vbmeta", std::string(slot_data->vbmeta_images[0].partition_name));
EXPECT_EQ(slot_data->vbmeta_images[0].vbmeta_size, vbmeta_image_.size());
EXPECT_EQ(0,
memcmp(vbmeta_image_.data(),
slot_data->vbmeta_images[0].vbmeta_data,
slot_data->vbmeta_images[0].vbmeta_size));
// The boot image data should match what is generated above with
// GenerateImage().
EXPECT_EQ(size_t(1), slot_data->num_loaded_partitions);
EXPECT_EQ("boot",
std::string(slot_data->loaded_partitions[0].partition_name));
EXPECT_EQ(boot_image_size, slot_data->loaded_partitions[0].data_size);
for (size_t n = 0; n < slot_data->loaded_partitions[0].data_size; n++) {
EXPECT_EQ(slot_data->loaded_partitions[0].data[n], uint8_t(n));
}
// This should match the two cmdlines with a space (U+0020) between
// them and the $(ANDROID_SYSTEM_PARTUUID) and
// $(ANDROID_BOOT_PARTUUID) variables replaced.
EXPECT_EQ(
"cmdline in vbmeta 1234-fake-guid-for:boot_a cmdline in hash footer "
"1234-fake-guid-for:system_a "
"androidboot.vbmeta.device=PARTUUID=1234-fake-guid-for:vbmeta_a "
"androidboot.vbmeta.avb_version=1.1 "
"androidboot.vbmeta.device_state=locked "
"androidboot.vbmeta.hash_alg=sha256 androidboot.vbmeta.size=1472 "
"androidboot.vbmeta.digest="
"99e84e34697a77414f0d7dd7896e98ac4da2d26bdd3756ef59ec79918de2adbe "
"androidboot.vbmeta.invalidate_on_error=yes "
"androidboot.veritymode=enforcing",
std::string(slot_data->cmdline));
EXPECT_EQ(4UL, slot_data->rollback_indexes[0]);
for (size_t n = 1; n < AVB_MAX_NUMBER_OF_ROLLBACK_INDEX_LOCATIONS; n++) {
EXPECT_EQ(0UL, slot_data->rollback_indexes[n]);
}
avb_slot_verify_data_free(slot_data);
}
TEST_F(AvbSlotVerifyTest, HashDescriptorInVBMetaWithPreloadedPartition) {
const size_t boot_partition_size = 16 * 1024 * 1024;
const size_t boot_image_size = 5 * 1024 * 1024;
base::FilePath boot_path = GenerateImage("boot_a.img", boot_image_size);
EXPECT_COMMAND(
0,
"./avbtool add_hash_footer"
" --image %s"
" --rollback_index 0"
" --partition_name boot"
" --partition_size %zd"
" --kernel_cmdline 'cmdline in hash footer $(ANDROID_SYSTEM_PARTUUID)'"
" --salt deadbeef"
" --internal_release_string \"\"",
boot_path.value().c_str(),
boot_partition_size);
GenerateVBMetaImage(
"vbmeta_a.img",
"SHA256_RSA2048",
4,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf(
"--include_descriptors_from_image %s"
" --kernel_cmdline 'cmdline in vbmeta $(ANDROID_BOOT_PARTUUID)'"
" --internal_release_string \"\"",
boot_path.value().c_str()));
EXPECT_COMMAND(0,
"./avbtool erase_footer"
" --image %s",
boot_path.value().c_str());
// With no footer, 'avbtool info_image' should fail (exit status 1).
EXPECT_COMMAND(
1, "./avbtool info_image --image %s", boot_path.value().c_str());
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
ops_.enable_get_preloaded_partition();
EXPECT_TRUE(ops_.preload_partition("boot_a", boot_path));
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"boot", NULL};
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
// Now verify the slot data. The vbmeta data should match our
// vbmeta_image_ member.
EXPECT_EQ(size_t(1), slot_data->num_vbmeta_images);
EXPECT_EQ("vbmeta", std::string(slot_data->vbmeta_images[0].partition_name));
EXPECT_EQ(slot_data->vbmeta_images[0].vbmeta_size, vbmeta_image_.size());
EXPECT_EQ(0,
memcmp(vbmeta_image_.data(),
slot_data->vbmeta_images[0].vbmeta_data,
slot_data->vbmeta_images[0].vbmeta_size));
// The boot image data should match what is generated above with
// GenerateImage().
EXPECT_EQ(size_t(1), slot_data->num_loaded_partitions);
EXPECT_EQ("boot",
std::string(slot_data->loaded_partitions[0].partition_name));
EXPECT_EQ(boot_image_size, slot_data->loaded_partitions[0].data_size);
for (size_t n = 0; n < slot_data->loaded_partitions[0].data_size; n++) {
EXPECT_EQ(slot_data->loaded_partitions[0].data[n], uint8_t(n));
}
EXPECT_TRUE(slot_data->loaded_partitions[0].preloaded);
avb_slot_verify_data_free(slot_data);
}
TEST_F(AvbSlotVerifyTest, HashDescriptorInVBMetaCorruptBoot) {
size_t boot_partition_size = 16 * 1024 * 1024;
base::FilePath boot_path = GenerateImage("boot_a.img", 5 * 1024 * 1024);
const char* requested_partitions[] = {"boot", NULL};
EXPECT_COMMAND(0,
"./avbtool add_hash_footer"
" --image %s"
" --rollback_index 0"
" --partition_name boot"
" --partition_size %zd"
" --salt deadbeef"
" --internal_release_string \"\"",
boot_path.value().c_str(),
boot_partition_size);
GenerateVBMetaImage("vbmeta_a.img",
"SHA256_RSA2048",
0,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf("--include_descriptors_from_image %s"
" --internal_release_string \"\"",
boot_path.value().c_str()));
EXPECT_COMMAND(0,
"./avbtool erase_footer"
" --image %s",
boot_path.value().c_str());
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
// So far, so good.
AvbSlotVerifyData* slot_data = NULL;
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
avb_slot_verify_data_free(slot_data);
// Now corrupt boot_a.img and expect verification error.
uint8_t corrupt_data[4] = {0xff, 0xff, 0xff, 0xff};
EXPECT_EQ(AVB_IO_RESULT_OK,
ops_.avb_ops()->write_to_partition(ops_.avb_ops(),
"boot_a",
1024 * 1024, // offset: 1 MiB
sizeof corrupt_data,
corrupt_data));
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_EQ(nullptr, slot_data);
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
avb_slot_verify_data_free(slot_data);
}
TEST_F(AvbSlotVerifyTest, HashDescriptorInChainedPartition) {
size_t boot_partition_size = 16 * 1024 * 1024;
const size_t boot_image_size = 5 * 1024 * 1024;
base::FilePath boot_path = GenerateImage("boot.img", boot_image_size);
const char* requested_partitions[] = {"boot", NULL};
EXPECT_COMMAND(0,
"./avbtool add_hash_footer"
" --image %s"
" --kernel_cmdline 'cmdline2 in hash footer'"
" --rollback_index 12"
" --partition_name boot"
" --partition_size %zd"
" --algorithm SHA256_RSA4096"
" --key test/data/testkey_rsa4096.pem"
" --salt deadbeef"
" --internal_release_string \"\"",
boot_path.value().c_str(),
boot_partition_size);
base::FilePath pk_path = testdir_.Append("testkey_rsa4096.avbpubkey");
EXPECT_COMMAND(
0,
"./avbtool extract_public_key --key test/data/testkey_rsa4096.pem"
" --output %s",
pk_path.value().c_str());
GenerateVBMetaImage(
"vbmeta.img",
"SHA256_RSA2048",
11,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf("--chain_partition boot:1:%s"
" --kernel_cmdline 'cmdline2 in vbmeta'"
" --internal_release_string \"\"",
pk_path.value().c_str()));
EXPECT_EQ(
"Minimum libavb version: 1.0\n"
"Header Block: 256 bytes\n"
"Authentication Block: 320 bytes\n"
"Auxiliary Block: 1728 bytes\n"
"Algorithm: SHA256_RSA2048\n"
"Rollback Index: 11\n"
"Flags: 0\n"
"Release String: ''\n"
"Descriptors:\n"
" Chain Partition descriptor:\n"
" Partition Name: boot\n"
" Rollback Index Location: 1\n"
" Public key (sha1): "
"2597c218aae470a130f61162feaae70afd97f011\n"
" Kernel Cmdline descriptor:\n"
" Flags: 0\n"
" Kernel Cmdline: 'cmdline2 in vbmeta'\n",
InfoImage(vbmeta_image_path_));
EXPECT_EQ(
"Footer version: 1.0\n"
"Image size: 16777216 bytes\n"
"Original image size: 5242880 bytes\n"
"VBMeta offset: 5242880\n"
"VBMeta size: 2112 bytes\n"
"--\n"
"Minimum libavb version: 1.0\n"
"Header Block: 256 bytes\n"
"Authentication Block: 576 bytes\n"
"Auxiliary Block: 1280 bytes\n"
"Algorithm: SHA256_RSA4096\n"
"Rollback Index: 12\n"
"Flags: 0\n"
"Release String: ''\n"
"Descriptors:\n"
" Hash descriptor:\n"
" Image Size: 5242880 bytes\n"
" Hash Algorithm: sha256\n"
" Partition Name: boot\n"
" Salt: deadbeef\n"
" Digest: "
"184cb36243adb8b87d2d8c4802de32125fe294ec46753d732144ee65df68a23d\n"
" Flags: 0\n"
" Kernel Cmdline descriptor:\n"
" Flags: 0\n"
" Kernel Cmdline: 'cmdline2 in hash footer'\n",
InfoImage(boot_path));
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
AvbSlotVerifyData* slot_data = NULL;
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
// Now verify the slot data. We should have two vbmeta
// structs. Verify both of them. Note that the A/B suffix isn't
// appended.
EXPECT_EQ(size_t(2), slot_data->num_vbmeta_images);
EXPECT_EQ("vbmeta", std::string(slot_data->vbmeta_images[0].partition_name));
EXPECT_EQ(slot_data->vbmeta_images[0].vbmeta_size, vbmeta_image_.size());
EXPECT_EQ(0,
memcmp(vbmeta_image_.data(),
slot_data->vbmeta_images[0].vbmeta_data,
slot_data->vbmeta_images[0].vbmeta_size));
// And for the second vbmeta struct we check that the descriptors
// match the info_image output from above.
EXPECT_EQ("boot", std::string(slot_data->vbmeta_images[1].partition_name));
const AvbDescriptor** descriptors =
avb_descriptor_get_all(slot_data->vbmeta_images[1].vbmeta_data,
slot_data->vbmeta_images[1].vbmeta_size,
NULL);
EXPECT_NE(nullptr, descriptors);
AvbHashDescriptor hash_desc;
EXPECT_EQ(true,
avb_hash_descriptor_validate_and_byteswap(
((AvbHashDescriptor*)descriptors[0]), &hash_desc));
const uint8_t* desc_end = reinterpret_cast<const uint8_t*>(descriptors[0]) +
sizeof(AvbHashDescriptor);
uint64_t o = 0;
EXPECT_EQ("boot",
std::string(reinterpret_cast<const char*>(desc_end + o),
hash_desc.partition_name_len));
o += hash_desc.partition_name_len;
EXPECT_EQ("deadbeef", mem_to_hexstring(desc_end + o, hash_desc.salt_len));
o += hash_desc.salt_len;
EXPECT_EQ("184cb36243adb8b87d2d8c4802de32125fe294ec46753d732144ee65df68a23d",
mem_to_hexstring(desc_end + o, hash_desc.digest_len));
AvbKernelCmdlineDescriptor cmdline_desc;
EXPECT_EQ(true,
avb_kernel_cmdline_descriptor_validate_and_byteswap(
((AvbKernelCmdlineDescriptor*)descriptors[1]), &cmdline_desc));
desc_end = reinterpret_cast<const uint8_t*>(descriptors[1]) +
sizeof(AvbKernelCmdlineDescriptor);
EXPECT_EQ("cmdline2 in hash footer",
std::string(reinterpret_cast<const char*>(desc_end),
cmdline_desc.kernel_cmdline_length));
avb_free(descriptors);
// The boot image data should match what is generated above with
// GenerateImage().
EXPECT_EQ(size_t(1), slot_data->num_loaded_partitions);
EXPECT_EQ("boot",
std::string(slot_data->loaded_partitions[0].partition_name));
EXPECT_EQ(boot_image_size, slot_data->loaded_partitions[0].data_size);
for (size_t n = 0; n < slot_data->loaded_partitions[0].data_size; n++) {
EXPECT_EQ(slot_data->loaded_partitions[0].data[n], uint8_t(n));
}
// This should match the two cmdlines with a space (U+0020) between them.
EXPECT_EQ(
"cmdline2 in hash footer cmdline2 in vbmeta "
"androidboot.vbmeta.device=PARTUUID=1234-fake-guid-for:vbmeta "
"androidboot.vbmeta.avb_version=1.1 "
"androidboot.vbmeta.device_state=locked "
"androidboot.vbmeta.hash_alg=sha256 androidboot.vbmeta.size=4416 "
"androidboot.vbmeta.digest="
"4a45faa9adfeb94e9154fe682c11fef1a1a3d829b67cbf1a12ac7f0aa4f8e2e4 "
"androidboot.vbmeta.invalidate_on_error=yes "
"androidboot.veritymode=enforcing",
std::string(slot_data->cmdline));
EXPECT_EQ(11UL, slot_data->rollback_indexes[0]);
EXPECT_EQ(12UL, slot_data->rollback_indexes[1]);
for (size_t n = 2; n < AVB_MAX_NUMBER_OF_ROLLBACK_INDEX_LOCATIONS; n++) {
EXPECT_EQ(0UL, slot_data->rollback_indexes[n]);
}
uint8_t vbmeta_digest[AVB_SHA256_DIGEST_SIZE];
avb_slot_verify_data_calculate_vbmeta_digest(
slot_data, AVB_DIGEST_TYPE_SHA256, vbmeta_digest);
EXPECT_EQ("4a45faa9adfeb94e9154fe682c11fef1a1a3d829b67cbf1a12ac7f0aa4f8e2e4",
mem_to_hexstring(vbmeta_digest, AVB_SHA256_DIGEST_SIZE));
avb_slot_verify_data_free(slot_data);
EXPECT_EQ("4a45faa9adfeb94e9154fe682c11fef1a1a3d829b67cbf1a12ac7f0aa4f8e2e4",
CalcVBMetaDigest("vbmeta.img", "sha256"));
}
TEST_F(AvbSlotVerifyTest, HashDescriptorInOtherVBMetaPartition) {
size_t boot_partition_size = 16 * 1024 * 1024;
const size_t boot_image_size = 5 * 1024 * 1024;
base::FilePath boot_path = GenerateImage("boot.img", boot_image_size);
base::FilePath other_vbmeta_path = testdir_.Append("vbmeta_google.img");
const char* requested_partitions[] = {"boot", NULL};
EXPECT_COMMAND(0,
"./avbtool add_hash_footer"
" --image %s"
" --kernel_cmdline 'cmdline2 in hash footer'"
" --rollback_index 12"
" --partition_name boot"
" --partition_size %zd"
" --algorithm SHA256_RSA4096"
" --key test/data/testkey_rsa4096.pem"
" --salt deadbeef"
" --internal_release_string \"\"",
boot_path.value().c_str(),
boot_partition_size);
// Extract the vbmeta blob from the footer in boot.img, put it into
// vbmeta_google.img, and erase the footer from boot.img
EXPECT_COMMAND(0,
"./avbtool extract_vbmeta_image"
" --image %s"
" --output %s",
boot_path.value().c_str(),
other_vbmeta_path.value().c_str());
EXPECT_COMMAND(0,
"./avbtool erase_footer"
" --image %s",
boot_path.value().c_str());
base::FilePath pk_path = testdir_.Append("testkey_rsa4096.avbpubkey");
EXPECT_COMMAND(
0,
"./avbtool extract_public_key --key test/data/testkey_rsa4096.pem"
" --output %s",
pk_path.value().c_str());
GenerateVBMetaImage(
"vbmeta.img",
"SHA256_RSA2048",
11,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf("--chain_partition vbmeta_google:1:%s"
" --kernel_cmdline 'cmdline2 in vbmeta'"
" --internal_release_string \"\"",
pk_path.value().c_str()));
EXPECT_EQ(
"Minimum libavb version: 1.0\n"
"Header Block: 256 bytes\n"
"Authentication Block: 320 bytes\n"
"Auxiliary Block: 1728 bytes\n"
"Algorithm: SHA256_RSA2048\n"
"Rollback Index: 11\n"
"Flags: 0\n"
"Release String: ''\n"
"Descriptors:\n"
" Chain Partition descriptor:\n"
" Partition Name: vbmeta_google\n"
" Rollback Index Location: 1\n"
" Public key (sha1): "
"2597c218aae470a130f61162feaae70afd97f011\n"
" Kernel Cmdline descriptor:\n"
" Flags: 0\n"
" Kernel Cmdline: 'cmdline2 in vbmeta'\n",
InfoImage(vbmeta_image_path_));
EXPECT_EQ(
"Minimum libavb version: 1.0\n"
"Header Block: 256 bytes\n"
"Authentication Block: 576 bytes\n"
"Auxiliary Block: 1280 bytes\n"
"Algorithm: SHA256_RSA4096\n"
"Rollback Index: 12\n"
"Flags: 0\n"
"Release String: ''\n"
"Descriptors:\n"
" Hash descriptor:\n"
" Image Size: 5242880 bytes\n"
" Hash Algorithm: sha256\n"
" Partition Name: boot\n"
" Salt: deadbeef\n"
" Digest: "
"184cb36243adb8b87d2d8c4802de32125fe294ec46753d732144ee65df68a23d\n"
" Flags: 0\n"
" Kernel Cmdline descriptor:\n"
" Flags: 0\n"
" Kernel Cmdline: 'cmdline2 in hash footer'\n",
InfoImage(other_vbmeta_path));
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
AvbSlotVerifyData* slot_data = NULL;
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
// Now verify the slot data. We should have two vbmeta
// structs. Verify both of them. Note that the A/B suffix isn't
// appended.
EXPECT_EQ(size_t(2), slot_data->num_vbmeta_images);
EXPECT_EQ("vbmeta", std::string(slot_data->vbmeta_images[0].partition_name));
EXPECT_EQ(slot_data->vbmeta_images[0].vbmeta_size, vbmeta_image_.size());
EXPECT_EQ(0,
memcmp(vbmeta_image_.data(),
slot_data->vbmeta_images[0].vbmeta_data,
slot_data->vbmeta_images[0].vbmeta_size));
// And for the second vbmeta struct we check that the descriptors
// match the info_image output from above.
EXPECT_EQ("vbmeta_google",
std::string(slot_data->vbmeta_images[1].partition_name));
const AvbDescriptor** descriptors =
avb_descriptor_get_all(slot_data->vbmeta_images[1].vbmeta_data,
slot_data->vbmeta_images[1].vbmeta_size,
NULL);
EXPECT_NE(nullptr, descriptors);
AvbHashDescriptor hash_desc;
EXPECT_EQ(true,
avb_hash_descriptor_validate_and_byteswap(
((AvbHashDescriptor*)descriptors[0]), &hash_desc));
const uint8_t* desc_end = reinterpret_cast<const uint8_t*>(descriptors[0]) +
sizeof(AvbHashDescriptor);
uint64_t o = 0;
EXPECT_EQ("boot",
std::string(reinterpret_cast<const char*>(desc_end + o),
hash_desc.partition_name_len));
o += hash_desc.partition_name_len;
EXPECT_EQ("deadbeef", mem_to_hexstring(desc_end + o, hash_desc.salt_len));
o += hash_desc.salt_len;
EXPECT_EQ("184cb36243adb8b87d2d8c4802de32125fe294ec46753d732144ee65df68a23d",
mem_to_hexstring(desc_end + o, hash_desc.digest_len));
AvbKernelCmdlineDescriptor cmdline_desc;
EXPECT_EQ(true,
avb_kernel_cmdline_descriptor_validate_and_byteswap(
((AvbKernelCmdlineDescriptor*)descriptors[1]), &cmdline_desc));
desc_end = reinterpret_cast<const uint8_t*>(descriptors[1]) +
sizeof(AvbKernelCmdlineDescriptor);
EXPECT_EQ("cmdline2 in hash footer",
std::string(reinterpret_cast<const char*>(desc_end),
cmdline_desc.kernel_cmdline_length));
avb_free(descriptors);
// The boot image data should match what is generated above with
// GenerateImage().
EXPECT_EQ(size_t(1), slot_data->num_loaded_partitions);
EXPECT_EQ("boot",
std::string(slot_data->loaded_partitions[0].partition_name));
EXPECT_EQ(boot_image_size, slot_data->loaded_partitions[0].data_size);
for (size_t n = 0; n < slot_data->loaded_partitions[0].data_size; n++) {
EXPECT_EQ(slot_data->loaded_partitions[0].data[n], uint8_t(n));
}
// This should match the two cmdlines with a space (U+0020) between them.
EXPECT_EQ(
"cmdline2 in hash footer cmdline2 in vbmeta "
"androidboot.vbmeta.device=PARTUUID=1234-fake-guid-for:vbmeta "
"androidboot.vbmeta.avb_version=1.1 "
"androidboot.vbmeta.device_state=locked "
"androidboot.vbmeta.hash_alg=sha256 androidboot.vbmeta.size=4416 "
"androidboot.vbmeta.digest="
"232447e92370ed31c2b6c5fb7328eb5d828a9819b3e6f6c10d96b9ca6fd209a1 "
"androidboot.vbmeta.invalidate_on_error=yes "
"androidboot.veritymode=enforcing",
std::string(slot_data->cmdline));
EXPECT_EQ(11UL, slot_data->rollback_indexes[0]);
EXPECT_EQ(12UL, slot_data->rollback_indexes[1]);
for (size_t n = 2; n < AVB_MAX_NUMBER_OF_ROLLBACK_INDEX_LOCATIONS; n++) {
EXPECT_EQ(0UL, slot_data->rollback_indexes[n]);
}
uint8_t vbmeta_digest[AVB_SHA256_DIGEST_SIZE];
avb_slot_verify_data_calculate_vbmeta_digest(
slot_data, AVB_DIGEST_TYPE_SHA256, vbmeta_digest);
EXPECT_EQ("232447e92370ed31c2b6c5fb7328eb5d828a9819b3e6f6c10d96b9ca6fd209a1",
mem_to_hexstring(vbmeta_digest, AVB_SHA256_DIGEST_SIZE));
avb_slot_verify_data_free(slot_data);
EXPECT_EQ("232447e92370ed31c2b6c5fb7328eb5d828a9819b3e6f6c10d96b9ca6fd209a1",
CalcVBMetaDigest("vbmeta.img", "sha256"));
}
TEST_F(AvbSlotVerifyTest, HashDescriptorInChainedPartitionCorruptBoot) {
size_t boot_partition_size = 16 * 1024 * 1024;
base::FilePath boot_path = GenerateImage("boot_a.img", 5 * 1024 * 1024);
const char* requested_partitions[] = {"boot", NULL};
EXPECT_COMMAND(0,
"./avbtool add_hash_footer"
" --image %s"
" --rollback_index 0"
" --partition_name boot"
" --partition_size %zd"
" --algorithm SHA256_RSA4096"
" --key test/data/testkey_rsa4096.pem"
" --salt deadbeef"
" --internal_release_string \"\"",
boot_path.value().c_str(),
boot_partition_size);
base::FilePath pk_path = testdir_.Append("testkey_rsa4096.avbpubkey");
EXPECT_COMMAND(
0,
"./avbtool extract_public_key --key test/data/testkey_rsa4096.pem"
" --output %s",
pk_path.value().c_str());
GenerateVBMetaImage("vbmeta_a.img",
"SHA256_RSA2048",
0,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf("--chain_partition boot:1:%s"
" --internal_release_string \"\"",
pk_path.value().c_str()));
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
AvbSlotVerifyData* slot_data = NULL;
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
avb_slot_verify_data_free(slot_data);
// Now corrupt boot_a.img and expect verification error.
uint8_t corrupt_data[4] = {0xff, 0xff, 0xff, 0xff};
EXPECT_EQ(AVB_IO_RESULT_OK,
ops_.avb_ops()->write_to_partition(ops_.avb_ops(),
"boot_a",
1024 * 1024, // offset: 1 MiB
sizeof corrupt_data,
corrupt_data));
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_EQ(nullptr, slot_data);
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
avb_slot_verify_data_free(slot_data);
}
TEST_F(AvbSlotVerifyTest, HashDescriptorInChainedPartitionKeyMismatch) {
size_t boot_partition_size = 16 * 1024 * 1024;
base::FilePath boot_path = GenerateImage("boot_a.img", 5 * 1024 * 1024);
const char* requested_partitions[] = {"boot", NULL};
// Use different key to sign vbmeta in boot_a (we use the 8192 bit
// key) than what's in the chained partition descriptor (which is
// the 4096 bit key) and expect
// AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED.
EXPECT_COMMAND(0,
"./avbtool add_hash_footer"
" --image %s"
" --rollback_index 0"
" --partition_name boot"
" --partition_size %zd"
" --algorithm SHA256_RSA8192"
" --key test/data/testkey_rsa8192.pem"
" --salt deadbeef"
" --internal_release_string \"\"",
boot_path.value().c_str(),
boot_partition_size);
base::FilePath pk_path = testdir_.Append("testkey_rsa4096.avbpubkey");
EXPECT_COMMAND(
0,
"./avbtool extract_public_key --key test/data/testkey_rsa4096.pem"
" --output %s",
pk_path.value().c_str());
GenerateVBMetaImage("vbmeta_a.img",
"SHA256_RSA2048",
0,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf("--chain_partition boot:1:%s"
" --internal_release_string \"\"",
pk_path.value().c_str()));
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
AvbSlotVerifyData* slot_data = NULL;
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_EQ(nullptr, slot_data);
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
avb_slot_verify_data_free(slot_data);
}
TEST_F(AvbSlotVerifyTest, HashDescriptorInChainedPartitionRollbackIndexFail) {
size_t boot_partition_size = 16 * 1024 * 1024;
base::FilePath boot_path = GenerateImage("boot_a.img", 5 * 1024 * 1024);
const char* requested_partitions[] = {"boot", NULL};
EXPECT_COMMAND(0,
"./avbtool add_hash_footer"
" --image %s"
" --rollback_index 10"
" --partition_name boot"
" --partition_size %zd"
" --algorithm SHA256_RSA4096"
" --key test/data/testkey_rsa4096.pem"
" --salt deadbeef"
" --internal_release_string \"\"",
boot_path.value().c_str(),
boot_partition_size);
base::FilePath pk_path = testdir_.Append("testkey_rsa4096.avbpubkey");
EXPECT_COMMAND(
0,
"./avbtool extract_public_key --key test/data/testkey_rsa4096.pem"
" --output %s",
pk_path.value().c_str());
GenerateVBMetaImage("vbmeta_a.img",
"SHA256_RSA2048",
110,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf("--chain_partition boot:1:%s"
" --internal_release_string \"\"",
pk_path.value().c_str()));
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
AvbSlotVerifyData* slot_data = NULL;
// Both images (vbmeta_a and boot_a) have rollback index 10 and 11
// so it should work if the stored rollback indexes are 0 and 0.
ops_.set_stored_rollback_indexes({{0, 0}, {1, 0}});
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
avb_slot_verify_data_free(slot_data);
// Check failure if we set the stored rollback index of the chained
// partition to 20 (see AvbSlotVerifyTest.RollbackIndex above
// where we test rollback index checks for the vbmeta partition).
ops_.set_stored_rollback_indexes({{0, 0}, {1, 20}});
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_ROLLBACK_INDEX,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_EQ(nullptr, slot_data);
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_ROLLBACK_INDEX,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
avb_slot_verify_data_free(slot_data);
// Check failure if there is no rollback index slot 1 - in that case
// we expect an I/O error since ops->read_rollback_index() will
// fail.
ops_.set_stored_rollback_indexes({{0, 0}});
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_IO,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_EQ(nullptr, slot_data);
}
TEST_F(AvbSlotVerifyTest, ChainedPartitionNoSlots) {
size_t boot_partition_size = 16 * 1024 * 1024;
const size_t boot_image_size = 5 * 1024 * 1024;
base::FilePath boot_path = GenerateImage("boot.img", boot_image_size);
const char* requested_partitions[] = {"boot", NULL};
EXPECT_COMMAND(0,
"./avbtool add_hash_footer"
" --image %s"
" --kernel_cmdline 'cmdline2 in hash footer'"
" --rollback_index 12"
" --partition_name boot"
" --partition_size %zd"
" --algorithm SHA256_RSA4096"
" --key test/data/testkey_rsa4096.pem"
" --salt deadbeef"
" --internal_release_string \"\"",
boot_path.value().c_str(),
boot_partition_size);
base::FilePath pk_path = testdir_.Append("testkey_rsa4096.avbpubkey");
EXPECT_COMMAND(
0,
"./avbtool extract_public_key --key test/data/testkey_rsa4096.pem"
" --output %s",
pk_path.value().c_str());
GenerateVBMetaImage(
"vbmeta.img",
"SHA256_RSA2048",
11,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf("--chain_partition boot:1:%s"
" --kernel_cmdline 'cmdline2 in vbmeta'"
" --internal_release_string \"\"",
pk_path.value().c_str()));
EXPECT_EQ(
"Minimum libavb version: 1.0\n"
"Header Block: 256 bytes\n"
"Authentication Block: 320 bytes\n"
"Auxiliary Block: 1728 bytes\n"
"Algorithm: SHA256_RSA2048\n"
"Rollback Index: 11\n"
"Flags: 0\n"
"Release String: ''\n"
"Descriptors:\n"
" Chain Partition descriptor:\n"
" Partition Name: boot\n"
" Rollback Index Location: 1\n"
" Public key (sha1): "
"2597c218aae470a130f61162feaae70afd97f011\n"
" Kernel Cmdline descriptor:\n"
" Flags: 0\n"
" Kernel Cmdline: 'cmdline2 in vbmeta'\n",
InfoImage(vbmeta_image_path_));
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
AvbSlotVerifyData* slot_data = NULL;
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
// Now verify the slot data. The first vbmeta data should match our
// vbmeta_image_ member and the second one should be for the 'boot'
// partition.
EXPECT_EQ(size_t(2), slot_data->num_vbmeta_images);
EXPECT_EQ("vbmeta", std::string(slot_data->vbmeta_images[0].partition_name));
EXPECT_EQ(slot_data->vbmeta_images[0].vbmeta_size, vbmeta_image_.size());
EXPECT_EQ(0,
memcmp(vbmeta_image_.data(),
slot_data->vbmeta_images[0].vbmeta_data,
slot_data->vbmeta_images[0].vbmeta_size));
EXPECT_EQ("boot", std::string(slot_data->vbmeta_images[1].partition_name));
// The boot image data should match what is generated above with
// GenerateImage().
EXPECT_EQ(size_t(1), slot_data->num_loaded_partitions);
EXPECT_EQ("boot",
std::string(slot_data->loaded_partitions[0].partition_name));
EXPECT_EQ(boot_image_size, slot_data->loaded_partitions[0].data_size);
for (size_t n = 0; n < slot_data->loaded_partitions[0].data_size; n++) {
EXPECT_EQ(slot_data->loaded_partitions[0].data[n], uint8_t(n));
}
// This should match the two cmdlines with a space (U+0020) between
// them.
EXPECT_EQ(
"cmdline2 in hash footer cmdline2 in vbmeta "
"androidboot.vbmeta.device=PARTUUID=1234-fake-guid-for:vbmeta "
"androidboot.vbmeta.avb_version=1.1 "
"androidboot.vbmeta.device_state=locked "
"androidboot.vbmeta.hash_alg=sha256 androidboot.vbmeta.size=4416 "
"androidboot.vbmeta.digest="
"4a45faa9adfeb94e9154fe682c11fef1a1a3d829b67cbf1a12ac7f0aa4f8e2e4 "
"androidboot.vbmeta.invalidate_on_error=yes "
"androidboot.veritymode=enforcing",
std::string(slot_data->cmdline));
EXPECT_EQ(11UL, slot_data->rollback_indexes[0]);
EXPECT_EQ(12UL, slot_data->rollback_indexes[1]);
for (size_t n = 2; n < AVB_MAX_NUMBER_OF_ROLLBACK_INDEX_LOCATIONS; n++) {
EXPECT_EQ(0UL, slot_data->rollback_indexes[n]);
}
avb_slot_verify_data_free(slot_data);
}
TEST_F(AvbSlotVerifyTest, PartitionsOtherThanBoot) {
const size_t foo_partition_size = 16 * 1024 * 1024;
const size_t bar_partition_size = 32 * 1024 * 1024;
const size_t foo_image_size = 5 * 1024 * 1024;
const size_t bar_image_size = 10 * 1024 * 1024;
base::FilePath foo_path = GenerateImage("foo_a.img", foo_image_size);
base::FilePath bar_path = GenerateImage("bar_a.img", bar_image_size);
EXPECT_COMMAND(0,
"./avbtool add_hash_footer"
" --image %s"
" --partition_name foo"
" --partition_size %zd"
" --salt deadbeef"
" --internal_release_string \"\"",
foo_path.value().c_str(),
foo_partition_size);
EXPECT_COMMAND(0,
"./avbtool add_hash_footer"
" --image %s"
" --partition_name bar"
" --partition_size %zd"
" --salt deadbeef"
" --internal_release_string \"\"",
bar_path.value().c_str(),
bar_partition_size);
GenerateVBMetaImage("vbmeta_a.img",
"SHA256_RSA2048",
4,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf("--include_descriptors_from_image %s"
" --include_descriptors_from_image %s"
" --internal_release_string \"\"",
foo_path.value().c_str(),
bar_path.value().c_str()));
EXPECT_EQ(
"Minimum libavb version: 1.0\n"
"Header Block: 256 bytes\n"
"Authentication Block: 320 bytes\n"
"Auxiliary Block: 896 bytes\n"
"Algorithm: SHA256_RSA2048\n"
"Rollback Index: 4\n"
"Flags: 0\n"
"Release String: ''\n"
"Descriptors:\n"
" Hash descriptor:\n"
" Image Size: 10485760 bytes\n"
" Hash Algorithm: sha256\n"
" Partition Name: bar\n"
" Salt: deadbeef\n"
" Digest: "
"baea4bbd261d0edf4d1fe5e6e5a36976c291eeba66b6a46fa81dba691327a727\n"
" Flags: 0\n"
" Hash descriptor:\n"
" Image Size: 5242880 bytes\n"
" Hash Algorithm: sha256\n"
" Partition Name: foo\n"
" Salt: deadbeef\n"
" Digest: "
"184cb36243adb8b87d2d8c4802de32125fe294ec46753d732144ee65df68a23d\n"
" Flags: 0\n",
InfoImage(vbmeta_image_path_));
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"foo", "bar", NULL};
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
// Now verify the slot data. The vbmeta data should match our
// vbmeta_image_ member.
EXPECT_EQ(size_t(1), slot_data->num_vbmeta_images);
EXPECT_EQ("vbmeta", std::string(slot_data->vbmeta_images[0].partition_name));
EXPECT_EQ(slot_data->vbmeta_images[0].vbmeta_size, vbmeta_image_.size());
EXPECT_EQ(0,
memcmp(vbmeta_image_.data(),
slot_data->vbmeta_images[0].vbmeta_data,
slot_data->vbmeta_images[0].vbmeta_size));
// The 'foo' and 'bar' image data should match what is generated
// above with GenerateImage().
EXPECT_EQ(size_t(2), slot_data->num_loaded_partitions);
EXPECT_EQ("bar", std::string(slot_data->loaded_partitions[0].partition_name));
EXPECT_EQ(bar_image_size, slot_data->loaded_partitions[0].data_size);
for (size_t n = 0; n < slot_data->loaded_partitions[0].data_size; n++) {
EXPECT_EQ(slot_data->loaded_partitions[0].data[n], uint8_t(n));
}
EXPECT_EQ("foo", std::string(slot_data->loaded_partitions[1].partition_name));
EXPECT_EQ(foo_image_size, slot_data->loaded_partitions[1].data_size);
for (size_t n = 0; n < slot_data->loaded_partitions[1].data_size; n++) {
EXPECT_EQ(slot_data->loaded_partitions[1].data[n], uint8_t(n));
}
avb_slot_verify_data_free(slot_data);
// Check that we loaded vbmeta_a, foo_a, and bar_a.
std::set<std::string> partitions = ops_.get_partition_names_read_from();
EXPECT_EQ(size_t(3), partitions.size());
EXPECT_TRUE(partitions.find("vbmeta_a") != partitions.end());
EXPECT_TRUE(partitions.find("foo_a") != partitions.end());
EXPECT_TRUE(partitions.find("bar_a") != partitions.end());
}
TEST_F(AvbSlotVerifyTest, OnlyLoadWhatHasBeenRequested) {
const size_t foo_partition_size = 16 * 1024 * 1024;
const size_t bar_partition_size = 32 * 1024 * 1024;
const size_t foo_image_size = 5 * 1024 * 1024;
const size_t bar_image_size = 10 * 1024 * 1024;
base::FilePath foo_path = GenerateImage("foo_a.img", foo_image_size);
base::FilePath bar_path = GenerateImage("bar_a.img", bar_image_size);
EXPECT_COMMAND(0,
"./avbtool add_hash_footer"
" --image %s"
" --partition_name foo"
" --partition_size %zd"
" --salt deadbeef"
" --internal_release_string \"\"",
foo_path.value().c_str(),
foo_partition_size);
EXPECT_COMMAND(0,
"./avbtool add_hash_footer"
" --image %s"
" --partition_name bar"
" --partition_size %zd"
" --salt deadbeef"
" --internal_release_string \"\"",
bar_path.value().c_str(),
bar_partition_size);
GenerateVBMetaImage("vbmeta_a.img",
"SHA256_RSA2048",
4,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf("--include_descriptors_from_image %s"
" --include_descriptors_from_image %s"
" --internal_release_string \"\"",
foo_path.value().c_str(),
bar_path.value().c_str()));
EXPECT_EQ(
"Minimum libavb version: 1.0\n"
"Header Block: 256 bytes\n"
"Authentication Block: 320 bytes\n"
"Auxiliary Block: 896 bytes\n"
"Algorithm: SHA256_RSA2048\n"
"Rollback Index: 4\n"
"Flags: 0\n"
"Release String: ''\n"
"Descriptors:\n"
" Hash descriptor:\n"
" Image Size: 10485760 bytes\n"
" Hash Algorithm: sha256\n"
" Partition Name: bar\n"
" Salt: deadbeef\n"
" Digest: "
"baea4bbd261d0edf4d1fe5e6e5a36976c291eeba66b6a46fa81dba691327a727\n"
" Flags: 0\n"
" Hash descriptor:\n"
" Image Size: 5242880 bytes\n"
" Hash Algorithm: sha256\n"
" Partition Name: foo\n"
" Salt: deadbeef\n"
" Digest: "
"184cb36243adb8b87d2d8c4802de32125fe294ec46753d732144ee65df68a23d\n"
" Flags: 0\n",
InfoImage(vbmeta_image_path_));
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"foo", NULL};
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
EXPECT_EQ(size_t(1), slot_data->num_loaded_partitions);
EXPECT_EQ("foo", std::string(slot_data->loaded_partitions[0].partition_name));
avb_slot_verify_data_free(slot_data);
// Check that we loaded vbmeta_a, foo_a but not bar_a.
std::set<std::string> partitions = ops_.get_partition_names_read_from();
EXPECT_EQ(size_t(2), partitions.size());
EXPECT_TRUE(partitions.find("vbmeta_a") != partitions.end());
EXPECT_TRUE(partitions.find("foo_a") != partitions.end());
EXPECT_TRUE(partitions.find("bar_a") == partitions.end());
}
TEST_F(AvbSlotVerifyTest, PublicKeyMetadata) {
base::FilePath md_path = GenerateImage("md.bin", 1536);
GenerateVBMetaImage("vbmeta_a.img",
"SHA256_RSA2048",
0,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf("--public_key_metadata %s"
" --internal_release_string \"\"",
md_path.value().c_str()));
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
std::string md_data;
ASSERT_TRUE(base::ReadFileToString(md_path, &md_data));
ops_.set_expected_public_key_metadata(md_data);
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"boot", NULL};
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
EXPECT_EQ(
"androidboot.vbmeta.device=PARTUUID=1234-fake-guid-for:vbmeta_a "
"androidboot.vbmeta.avb_version=1.1 "
"androidboot.vbmeta.device_state=locked "
"androidboot.vbmeta.hash_alg=sha256 androidboot.vbmeta.size=2688 "
"androidboot.vbmeta.digest="
"5edcaa54f40382ee6a2fc3b86cdf383348b35ed07955e83ea32d84b69a97eaa0 "
"androidboot.vbmeta.invalidate_on_error=yes "
"androidboot.veritymode=enforcing",
std::string(slot_data->cmdline));
avb_slot_verify_data_free(slot_data);
}
void AvbSlotVerifyTest::CmdlineWithHashtreeVerification(
bool hashtree_verification_on) {
const size_t rootfs_size = 1028 * 1024;
const size_t partition_size = 1536 * 1024;
// Generate a 1028 KiB file with known content.
std::vector<uint8_t> rootfs;
rootfs.resize(rootfs_size);
for (size_t n = 0; n < rootfs_size; n++)
rootfs[n] = uint8_t(n);
base::FilePath rootfs_path = testdir_.Append("rootfs.bin");
EXPECT_EQ(rootfs_size,
static_cast<const size_t>(
base::WriteFile(rootfs_path,
reinterpret_cast<const char*>(rootfs.data()),
rootfs.size())));
EXPECT_COMMAND(0,
"./avbtool add_hashtree_footer --salt d00df00d --image %s "
"--partition_size %d --partition_name foobar "
"--algorithm SHA256_RSA2048 "
"--key test/data/testkey_rsa2048.pem "
"--internal_release_string \"\" "
"--do_not_generate_fec",
rootfs_path.value().c_str(),
(int)partition_size);
// Check that we correctly generate dm-verity kernel cmdline
// snippets, if requested.
GenerateVBMetaImage(
"vbmeta_a.img",
"SHA256_RSA2048",
4,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf("--setup_rootfs_from_kernel %s "
"--kernel_cmdline should_be_in_both=1 "
"--algorithm SHA256_RSA2048 "
"--flags %d "
"--internal_release_string \"\"",
rootfs_path.value().c_str(),
hashtree_verification_on
? 0
: AVB_VBMETA_IMAGE_FLAGS_HASHTREE_DISABLED));
EXPECT_EQ(
base::StringPrintf(
"Minimum libavb version: 1.0\n"
"Header Block: 256 bytes\n"
"Authentication Block: 320 bytes\n"
"Auxiliary Block: 960 bytes\n"
"Algorithm: SHA256_RSA2048\n"
"Rollback Index: 4\n"
"Flags: %d\n"
"Release String: ''\n"
"Descriptors:\n"
" Kernel Cmdline descriptor:\n"
" Flags: 1\n"
" Kernel Cmdline: 'dm=\"1 vroot none ro 1,0 2056 verity "
"1 PARTUUID=$(ANDROID_SYSTEM_PARTUUID) "
"PARTUUID=$(ANDROID_SYSTEM_PARTUUID) 4096 4096 257 257 sha1 "
"e811611467dcd6e8dc4324e45f706c2bdd51db67 d00df00d 2 "
"$(ANDROID_VERITY_MODE) ignore_zero_blocks\" root=/dev/dm-0'\n"
" Kernel Cmdline descriptor:\n"
" Flags: 2\n"
" Kernel Cmdline: "
"'root=PARTUUID=$(ANDROID_SYSTEM_PARTUUID)'\n"
" Kernel Cmdline descriptor:\n"
" Flags: 0\n"
" Kernel Cmdline: 'should_be_in_both=1'\n",
hashtree_verification_on ? 0
: AVB_VBMETA_IMAGE_FLAGS_HASHTREE_DISABLED),
InfoImage(vbmeta_image_path_));
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
// Check that avb_slot_verify() picks the cmdline decsriptors based
// on their flags value.
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"boot", NULL};
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
if (hashtree_verification_on) {
EXPECT_EQ(
"dm=\"1 vroot none ro 1,0 2056 verity 1 "
"PARTUUID=1234-fake-guid-for:system_a "
"PARTUUID=1234-fake-guid-for:system_a 4096 4096 257 257 sha1 "
"e811611467dcd6e8dc4324e45f706c2bdd51db67 d00df00d 2 "
"restart_on_corruption ignore_zero_blocks\" root=/dev/dm-0 "
"should_be_in_both=1 "
"androidboot.vbmeta.device=PARTUUID=1234-fake-guid-for:vbmeta_a "
"androidboot.vbmeta.avb_version=1.1 "
"androidboot.vbmeta.device_state=locked "
"androidboot.vbmeta.hash_alg=sha256 androidboot.vbmeta.size=1536 "
"androidboot.vbmeta.digest="
"946996b4cd78f2c060f6bb062b94054b809cbfbe9bf4425df263a0e55395ceea "
"androidboot.vbmeta.invalidate_on_error=yes "
"androidboot.veritymode=enforcing",
std::string(slot_data->cmdline));
} else {
// NOTE: androidboot.veritymode is 'disabled', not 'enforcing' and
// androidboot.vbmeta.invalidate_on_error isn't set.
EXPECT_EQ(
"root=PARTUUID=1234-fake-guid-for:system_a should_be_in_both=1 "
"androidboot.vbmeta.device=PARTUUID=1234-fake-guid-for:vbmeta_a "
"androidboot.vbmeta.avb_version=1.1 "
"androidboot.vbmeta.device_state=locked "
"androidboot.vbmeta.hash_alg=sha256 androidboot.vbmeta.size=1536 "
"androidboot.vbmeta.digest="
"c74338b2b366f7f774d264abb4ac06c997cbaacbf5edd70a6ef1a552f744076b "
"androidboot.veritymode=disabled",
std::string(slot_data->cmdline));
}
avb_slot_verify_data_free(slot_data);
}
TEST_F(AvbSlotVerifyTest, CmdlineWithHashtreeVerificationOff) {
CmdlineWithHashtreeVerification(false);
}
TEST_F(AvbSlotVerifyTest, CmdlineWithHashtreeVerificationOn) {
CmdlineWithHashtreeVerification(true);
}
void AvbSlotVerifyTest::CmdlineWithChainedHashtreeVerification(
bool hashtree_verification_on) {
const size_t system_size = 1028 * 1024;
const size_t system_partition_size = 1536 * 1024;
// Generate a 1028 KiB file with known content.
std::vector<uint8_t> contents;
contents.resize(system_size);
for (size_t n = 0; n < system_size; n++)
contents[n] = uint8_t(n);
base::FilePath system_path = testdir_.Append("system_a.img");
EXPECT_EQ(system_size,
static_cast<const size_t>(
base::WriteFile(system_path,
reinterpret_cast<const char*>(contents.data()),
contents.size())));
// Check that we correctly generate dm-verity kernel cmdline
// snippets, if requested.
EXPECT_COMMAND(0,
"./avbtool add_hashtree_footer --salt d00df00d --image %s "
"--partition_size %d --partition_name foobar "
"--algorithm SHA256_RSA2048 "
"--key test/data/testkey_rsa2048.pem "
"--internal_release_string \"\" "
"--do_not_generate_fec "
"--setup_as_rootfs_from_kernel",
system_path.value().c_str(),
(int)system_partition_size);
EXPECT_EQ(
"Footer version: 1.0\n"
"Image size: 1572864 bytes\n"
"Original image size: 1052672 bytes\n"
"VBMeta offset: 1069056\n"
"VBMeta size: 1664 bytes\n"
"--\n"
"Minimum libavb version: 1.0\n"
"Header Block: 256 bytes\n"
"Authentication Block: 320 bytes\n"
"Auxiliary Block: 1088 bytes\n"
"Algorithm: SHA256_RSA2048\n"
"Rollback Index: 0\n"
"Flags: 0\n"
"Release String: ''\n"
"Descriptors:\n"
" Hashtree descriptor:\n"
" Version of dm-verity: 1\n"
" Image Size: 1052672 bytes\n"
" Tree Offset: 1052672\n"
" Tree Size: 16384 bytes\n"
" Data Block Size: 4096 bytes\n"
" Hash Block Size: 4096 bytes\n"
" FEC num roots: 0\n"
" FEC offset: 0\n"
" FEC size: 0 bytes\n"
" Hash Algorithm: sha1\n"
" Partition Name: foobar\n"
" Salt: d00df00d\n"
" Root Digest: e811611467dcd6e8dc4324e45f706c2bdd51db67\n"
" Flags: 0\n"
" Kernel Cmdline descriptor:\n"
" Flags: 1\n"
" Kernel Cmdline: 'dm=\"1 vroot none ro 1,0 2056 verity 1 "
"PARTUUID=$(ANDROID_SYSTEM_PARTUUID) PARTUUID=$(ANDROID_SYSTEM_PARTUUID) "
"4096 4096 257 257 sha1 e811611467dcd6e8dc4324e45f706c2bdd51db67 "
"d00df00d 2 $(ANDROID_VERITY_MODE) ignore_zero_blocks\" root=/dev/dm-0'\n"
" Kernel Cmdline descriptor:\n"
" Flags: 2\n"
" Kernel Cmdline: "
"'root=PARTUUID=$(ANDROID_SYSTEM_PARTUUID)'\n",
InfoImage(system_path));
base::FilePath pk_path = testdir_.Append("testkey_rsa2048.avbpubkey");
EXPECT_COMMAND(
0,
"./avbtool extract_public_key --key test/data/testkey_rsa2048.pem"
" --output %s",
pk_path.value().c_str());
GenerateVBMetaImage(
"vbmeta_a.img",
"SHA256_RSA2048",
4,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf("--kernel_cmdline should_be_in_both=1 "
"--algorithm SHA256_RSA2048 "
"--flags %d "
"--chain_partition system:1:%s "
"--internal_release_string \"\"",
hashtree_verification_on
? 0
: AVB_VBMETA_IMAGE_FLAGS_HASHTREE_DISABLED,
pk_path.value().c_str()));
EXPECT_EQ(
base::StringPrintf("Minimum libavb version: 1.0\n"
"Header Block: 256 bytes\n"
"Authentication Block: 320 bytes\n"
"Auxiliary Block: 1216 bytes\n"
"Algorithm: SHA256_RSA2048\n"
"Rollback Index: 4\n"
"Flags: %d\n"
"Release String: ''\n"
"Descriptors:\n"
" Chain Partition descriptor:\n"
" Partition Name: system\n"
" Rollback Index Location: 1\n"
" Public key (sha1): "
"cdbb77177f731920bbe0a0f94f84d9038ae0617d\n"
" Kernel Cmdline descriptor:\n"
" Flags: 0\n"
" Kernel Cmdline: 'should_be_in_both=1'\n",
hashtree_verification_on
? 0
: AVB_VBMETA_IMAGE_FLAGS_HASHTREE_DISABLED),
InfoImage(vbmeta_image_path_));
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
// Check that avb_slot_verify() picks the cmdline descriptors based
// on their flags value... note that these descriptors are in the
// 'system' partition.
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"boot", NULL};
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
if (hashtree_verification_on) {
EXPECT_EQ(
"dm=\"1 vroot none ro 1,0 2056 verity 1 "
"PARTUUID=1234-fake-guid-for:system_a "
"PARTUUID=1234-fake-guid-for:system_a 4096 4096 257 257 sha1 "
"e811611467dcd6e8dc4324e45f706c2bdd51db67 d00df00d 2 "
"restart_on_corruption ignore_zero_blocks\" root=/dev/dm-0 "
"should_be_in_both=1 "
"androidboot.vbmeta.device=PARTUUID=1234-fake-guid-for:vbmeta_a "
"androidboot.vbmeta.avb_version=1.1 "
"androidboot.vbmeta.device_state=locked "
"androidboot.vbmeta.hash_alg=sha256 androidboot.vbmeta.size=3456 "
"androidboot.vbmeta.digest="
"5ee1669b112625322657b83ec932c73dad9b0222011b5aa3e8273f4e0ee025dc "
"androidboot.vbmeta.invalidate_on_error=yes "
"androidboot.veritymode=enforcing",
std::string(slot_data->cmdline));
} else {
// NOTE: androidboot.veritymode is 'disabled', not 'enforcing' and
// androidboot.vbmeta.invalidate_on_error isn't set.
EXPECT_EQ(
"root=PARTUUID=1234-fake-guid-for:system_a should_be_in_both=1 "
"androidboot.vbmeta.device=PARTUUID=1234-fake-guid-for:vbmeta_a "
"androidboot.vbmeta.avb_version=1.1 "
"androidboot.vbmeta.device_state=locked "
"androidboot.vbmeta.hash_alg=sha256 androidboot.vbmeta.size=3456 "
"androidboot.vbmeta.digest="
"ae792c45a9d898b532ff9625b60043a8d9eae7e6106b9cba31837d50ba40f81c "
"androidboot.veritymode=disabled",
std::string(slot_data->cmdline));
}
avb_slot_verify_data_free(slot_data);
}
TEST_F(AvbSlotVerifyTest, CmdlineWithChainedHashtreeVerificationOff) {
CmdlineWithChainedHashtreeVerification(false);
}
TEST_F(AvbSlotVerifyTest, CmdlineWithChainedHashtreeVerificationOn) {
CmdlineWithChainedHashtreeVerification(true);
}
void AvbSlotVerifyTest::VerificationDisabled(bool use_avbctl,
bool preload_boot,
bool has_system_partition) {
const size_t boot_part_size = 32 * 1024 * 1024;
const size_t dtbo_part_size = 4 * 1024 * 1024;
const size_t rootfs_size = 1028 * 1024;
const size_t partition_size = 1536 * 1024;
// Generate boot_a.img and dtbo_a.img since avb_slot_verify() will
// attempt to load them upon encountering the VERIFICATION_DISABLED
// flag.
base::FilePath boot_path = GenerateImage("boot_a.img", boot_part_size);
const size_t DTBO_DATA_OFFSET = 42;
base::FilePath dtbo_path =
GenerateImage("dtbo_a.img", dtbo_part_size, DTBO_DATA_OFFSET);
// Generate a 1028 KiB file with known content.
std::vector<uint8_t> rootfs;
rootfs.resize(rootfs_size);
for (size_t n = 0; n < rootfs_size; n++)
rootfs[n] = uint8_t(n);
base::FilePath rootfs_path = testdir_.Append("rootfs.bin");
EXPECT_EQ(rootfs_size,
static_cast<const size_t>(
base::WriteFile(rootfs_path,
reinterpret_cast<const char*>(rootfs.data()),
rootfs.size())));
EXPECT_COMMAND(0,
"./avbtool add_hashtree_footer --salt d00df00d --image %s "
"--partition_size %d --partition_name foobar "
"--algorithm SHA256_RSA2048 "
"--key test/data/testkey_rsa2048.pem "
"--internal_release_string \"\" "
"--do_not_generate_fec",
rootfs_path.value().c_str(),
(int)partition_size);
// Check that we correctly generate dm-verity kernel cmdline
// snippets, if requested.
GenerateVBMetaImage(
"vbmeta_a.img",
"SHA256_RSA2048",
4,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf(
"--setup_rootfs_from_kernel %s "
"--kernel_cmdline should_be_in_both=1 "
"--algorithm SHA256_RSA2048 "
"--flags %d "
"--internal_release_string \"\"",
rootfs_path.value().c_str(),
use_avbctl ? 0 : AVB_VBMETA_IMAGE_FLAGS_VERIFICATION_DISABLED));
EXPECT_EQ(
base::StringPrintf(
"Minimum libavb version: 1.0\n"
"Header Block: 256 bytes\n"
"Authentication Block: 320 bytes\n"
"Auxiliary Block: 960 bytes\n"
"Algorithm: SHA256_RSA2048\n"
"Rollback Index: 4\n"
"Flags: %d\n"
"Release String: ''\n"
"Descriptors:\n"
" Kernel Cmdline descriptor:\n"
" Flags: 1\n"
" Kernel Cmdline: 'dm=\"1 vroot none ro 1,0 2056 verity "
"1 PARTUUID=$(ANDROID_SYSTEM_PARTUUID) "
"PARTUUID=$(ANDROID_SYSTEM_PARTUUID) 4096 4096 257 257 sha1 "
"e811611467dcd6e8dc4324e45f706c2bdd51db67 d00df00d 2 "
"$(ANDROID_VERITY_MODE) ignore_zero_blocks\" root=/dev/dm-0'\n"
" Kernel Cmdline descriptor:\n"
" Flags: 2\n"
" Kernel Cmdline: "
"'root=PARTUUID=$(ANDROID_SYSTEM_PARTUUID)'\n"
" Kernel Cmdline descriptor:\n"
" Flags: 0\n"
" Kernel Cmdline: 'should_be_in_both=1'\n",
use_avbctl ? 0 : AVB_VBMETA_IMAGE_FLAGS_VERIFICATION_DISABLED),
InfoImage(vbmeta_image_path_));
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
if (!has_system_partition) {
ops_.set_hidden_partitions({"system", "system_a", "system_b"});
}
// Manually set the flag the same way 'avbctl disable-verification'
// would do it.
if (use_avbctl) {
uint32_t flags_data;
flags_data = avb_htobe32(AVB_VBMETA_IMAGE_FLAGS_VERIFICATION_DISABLED);
EXPECT_EQ(AVB_IO_RESULT_OK,
ops_.avb_ops()->write_to_partition(
ops_.avb_ops(),
"vbmeta_a",
offsetof(AvbVBMetaImageHeader, flags),
sizeof flags_data,
&flags_data));
}
if (preload_boot) {
ops_.enable_get_preloaded_partition();
EXPECT_TRUE(ops_.preload_partition("boot_a", boot_path));
}
// Check that avb_slot_verify() doesn't return any of the
// descriptors and instead return a kernel command-line with
// root=PARTUUID=<whatever_for_system_a> and none of the
// androidboot.vbmeta.* options are set. Also ensure all the
// requested partitions are loaded.
//
// Also if we modified via avbctl we should expect
// ERROR_VERIFICATION instead of OK.
//
AvbSlotVerifyResult expected_result = AVB_SLOT_VERIFY_RESULT_OK;
if (use_avbctl) {
expected_result = AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION;
}
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"boot", "dtbo", NULL};
EXPECT_EQ(expected_result,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
if (has_system_partition) {
EXPECT_EQ("root=PARTUUID=1234-fake-guid-for:system_a",
std::string(slot_data->cmdline));
} else {
EXPECT_EQ("", std::string(slot_data->cmdline));
}
// Also make sure that it actually loads the boot and dtbo partitions.
EXPECT_EQ(size_t(2), slot_data->num_loaded_partitions);
EXPECT_EQ("boot",
std::string(slot_data->loaded_partitions[0].partition_name));
EXPECT_EQ(boot_part_size, slot_data->loaded_partitions[0].data_size);
for (size_t n = 0; n < boot_part_size; n++) {
EXPECT_EQ(uint8_t(n), slot_data->loaded_partitions[0].data[n]);
}
EXPECT_EQ(preload_boot, slot_data->loaded_partitions[0].preloaded);
EXPECT_EQ("dtbo",
std::string(slot_data->loaded_partitions[1].partition_name));
EXPECT_EQ(dtbo_part_size, slot_data->loaded_partitions[1].data_size);
for (size_t n = 0; n < dtbo_part_size; n++) {
EXPECT_EQ(uint8_t(n + DTBO_DATA_OFFSET),
slot_data->loaded_partitions[1].data[n]);
}
EXPECT_FALSE(slot_data->loaded_partitions[1].preloaded);
avb_slot_verify_data_free(slot_data);
}
TEST_F(AvbSlotVerifyTest, VerificationDisabledUnmodified) {
VerificationDisabled(false, // use_avbctl
false, // preload_boot
true); // has_system_partition
}
TEST_F(AvbSlotVerifyTest, VerificationDisabledModified) {
VerificationDisabled(true, // use_avbctl
false, // preload_boot
true); // has_system_partition
}
TEST_F(AvbSlotVerifyTest, VerificationDisabledUnmodifiedPreloadBoot) {
VerificationDisabled(false, // use_avbctl
true, // preload_boot
true); // has_system_partition
}
TEST_F(AvbSlotVerifyTest, VerificationDisabledModifiedPreloadBoot) {
VerificationDisabled(true, // use_avbctl
true, // preload_boot
true); // has_system_partition
}
TEST_F(AvbSlotVerifyTest, VerificationDisabledUnmodifiedNoSystemPartition) {
VerificationDisabled(false, // use_avbctl
false, // preload_boot
false); // has_system_partition
}
TEST_F(AvbSlotVerifyTest, VerificationDisabledModifiedNoSystemPartition) {
VerificationDisabled(true, // use_avbctl
false, // preload_boot
false); // has_system_partition
}
// In the event that there's no vbmeta partition, we treat the vbmeta
// struct from 'boot' as the top-level partition. Check that this
// works.
TEST_F(AvbSlotVerifyTest, NoVBMetaPartition) {
const size_t MiB = 1024 * 1024;
const size_t boot_size = 6 * MiB;
const size_t boot_part_size = 8 * MiB;
const size_t system_size = 16 * MiB;
const size_t system_part_size = 32 * MiB;
const size_t foobar_size = 8 * MiB;
const size_t foobar_part_size = 16 * MiB;
const size_t bazboo_size = 4 * MiB;
const size_t bazboo_part_size = 8 * MiB;
base::FilePath boot_path = GenerateImage("boot.img", boot_size);
base::FilePath system_path = GenerateImage("system.img", system_size);
base::FilePath foobar_path = GenerateImage("foobar.img", foobar_size);
base::FilePath bazboo_path = GenerateImage("bazboo.img", bazboo_size);
EXPECT_COMMAND(0,
"./avbtool add_hashtree_footer --salt d00df00d --image %s "
"--partition_size %d --partition_name system "
"--algorithm SHA256_RSA2048 "
"--key test/data/testkey_rsa2048.pem "
"--internal_release_string \"\" "
"--do_not_generate_fec",
system_path.value().c_str(),
(int)system_part_size);
EXPECT_COMMAND(0,
"./avbtool add_hashtree_footer --salt d00df00d --image %s "
"--partition_size %d --partition_name foobar "
"--algorithm SHA256_RSA2048 "
"--key test/data/testkey_rsa2048.pem "
"--internal_release_string \"\" "
"--do_not_generate_fec",
foobar_path.value().c_str(),
(int)foobar_part_size);
EXPECT_COMMAND(0,
"./avbtool add_hashtree_footer --salt d00df00d --image %s "
"--partition_size %d --partition_name bazboo "
"--algorithm SHA512_RSA4096 "
"--key test/data/testkey_rsa4096.pem "
"--internal_release_string \"\" "
"--do_not_generate_fec",
bazboo_path.value().c_str(),
(int)bazboo_part_size);
base::FilePath pk_path = testdir_.Append("testkey_rsa4096.avbpubkey");
EXPECT_COMMAND(
0,
"./avbtool extract_public_key --key test/data/testkey_rsa4096.pem"
" --output %s",
pk_path.value().c_str());
// Explicitly pass "--flags 2147483648" (i.e. 1<<31) to check that
// boot.img is treated as top-level. Note the corresponding "Flags:"
// field below in the avbtool info_image output.
EXPECT_COMMAND(0,
"./avbtool add_hash_footer --salt d00df00d "
"--hash_algorithm sha256 --image %s "
"--partition_size %d --partition_name boot "
"--algorithm SHA256_RSA2048 "
"--key test/data/testkey_rsa2048.pem "
"--internal_release_string \"\" "
"--include_descriptors_from_image %s "
"--include_descriptors_from_image %s "
"--setup_rootfs_from_kernel %s "
"--chain_partition bazboo:1:%s "
"--flags 2147483648",
boot_path.value().c_str(),
(int)boot_part_size,
system_path.value().c_str(),
foobar_path.value().c_str(),
system_path.value().c_str(),
pk_path.value().c_str());
ASSERT_EQ(
"Footer version: 1.0\n"
"Image size: 8388608 bytes\n"
"Original image size: 6291456 bytes\n"
"VBMeta offset: 6291456\n"
"VBMeta size: 3200 bytes\n"
"--\n"
"Minimum libavb version: 1.0\n"
"Header Block: 256 bytes\n"
"Authentication Block: 320 bytes\n"
"Auxiliary Block: 2624 bytes\n"
"Algorithm: SHA256_RSA2048\n"
"Rollback Index: 0\n"
"Flags: 2147483648\n"
"Release String: ''\n"
"Descriptors:\n"
" Hash descriptor:\n"
" Image Size: 6291456 bytes\n"
" Hash Algorithm: sha256\n"
" Partition Name: boot\n"
" Salt: d00df00d\n"
" Digest: "
"4c109399b20e476bab15363bff55740add83e1c1e97e0b132f5c713ddd8c7868\n"
" Flags: 0\n"
" Chain Partition descriptor:\n"
" Partition Name: bazboo\n"
" Rollback Index Location: 1\n"
" Public key (sha1): "
"2597c218aae470a130f61162feaae70afd97f011\n"
" Kernel Cmdline descriptor:\n"
" Flags: 1\n"
" Kernel Cmdline: 'dm=\"1 vroot none ro 1,0 32768 verity 1 "
"PARTUUID=$(ANDROID_SYSTEM_PARTUUID) PARTUUID=$(ANDROID_SYSTEM_PARTUUID) "
"4096 4096 4096 4096 sha1 c9ffc3bfae5000269a55a56621547fd1fcf819df "
"d00df00d 2 $(ANDROID_VERITY_MODE) ignore_zero_blocks\" root=/dev/dm-0'\n"
" Kernel Cmdline descriptor:\n"
" Flags: 2\n"
" Kernel Cmdline: "
"'root=PARTUUID=$(ANDROID_SYSTEM_PARTUUID)'\n"
" Hashtree descriptor:\n"
" Version of dm-verity: 1\n"
" Image Size: 8388608 bytes\n"
" Tree Offset: 8388608\n"
" Tree Size: 69632 bytes\n"
" Data Block Size: 4096 bytes\n"
" Hash Block Size: 4096 bytes\n"
" FEC num roots: 0\n"
" FEC offset: 0\n"
" FEC size: 0 bytes\n"
" Hash Algorithm: sha1\n"
" Partition Name: foobar\n"
" Salt: d00df00d\n"
" Root Digest: d52d93c988d336a79abe1c05240ae9a79a9b7d61\n"
" Flags: 0\n"
" Hashtree descriptor:\n"
" Version of dm-verity: 1\n"
" Image Size: 16777216 bytes\n"
" Tree Offset: 16777216\n"
" Tree Size: 135168 bytes\n"
" Data Block Size: 4096 bytes\n"
" Hash Block Size: 4096 bytes\n"
" FEC num roots: 0\n"
" FEC offset: 0\n"
" FEC size: 0 bytes\n"
" Hash Algorithm: sha1\n"
" Partition Name: system\n"
" Salt: d00df00d\n"
" Root Digest: c9ffc3bfae5000269a55a56621547fd1fcf819df\n"
" Flags: 0\n",
InfoImage(boot_path));
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
// Now check that libavb will fall back to reading from 'boot'
// instead of 'vbmeta' when encountering
// AVB_IO_RESULT_ERROR_NO_SUCH_PARTITION on trying to read from
// 'vbmeta'.
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"boot", NULL};
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
// Note 'boot' in the value androidboot.vbmeta.device since we've
// read from 'boot' and not 'vbmeta'.
EXPECT_EQ(
"dm=\"1 vroot none ro 1,0 32768 verity 1 "
"PARTUUID=1234-fake-guid-for:system PARTUUID=1234-fake-guid-for:system "
"4096 4096 4096 4096 sha1 c9ffc3bfae5000269a55a56621547fd1fcf819df "
"d00df00d 2 restart_on_corruption ignore_zero_blocks\" root=/dev/dm-0 "
"androidboot.vbmeta.device=PARTUUID=1234-fake-guid-for:boot "
"androidboot.vbmeta.avb_version=1.1 "
"androidboot.vbmeta.device_state=locked "
"androidboot.vbmeta.hash_alg=sha256 androidboot.vbmeta.size=5312 "
"androidboot.vbmeta.digest="
"b297d90aa92a5d49725d1206ff1301b054c5a0214f1cb2fc12b809b317d943e4 "
"androidboot.vbmeta.invalidate_on_error=yes "
"androidboot.veritymode=enforcing",
std::string(slot_data->cmdline));
avb_slot_verify_data_free(slot_data);
}
// Check that non-zero flags in chained partition are caught in
// avb_slot_verify().
TEST_F(AvbSlotVerifyTest, ChainedPartitionEnforceFlagsZero) {
size_t boot_partition_size = 16 * 1024 * 1024;
const size_t boot_image_size = 5 * 1024 * 1024;
base::FilePath boot_path = GenerateImage("boot_a.img", boot_image_size);
const char* requested_partitions[] = {"boot", NULL};
EXPECT_COMMAND(0,
"./avbtool add_hash_footer"
" --image %s"
" --kernel_cmdline 'cmdline2 in hash footer'"
" --rollback_index 12"
" --partition_name boot"
" --partition_size %zd"
" --algorithm SHA256_RSA4096"
" --key test/data/testkey_rsa4096.pem"
" --salt deadbeef"
" --flags 1"
" --internal_release_string \"\"",
boot_path.value().c_str(),
boot_partition_size);
base::FilePath pk_path = testdir_.Append("testkey_rsa4096.avbpubkey");
EXPECT_COMMAND(
0,
"./avbtool extract_public_key --key test/data/testkey_rsa4096.pem"
" --output %s",
pk_path.value().c_str());
GenerateVBMetaImage(
"vbmeta_a.img",
"SHA256_RSA2048",
11,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf("--chain_partition boot:1:%s"
" --kernel_cmdline 'cmdline2 in vbmeta'"
" --internal_release_string \"\"",
pk_path.value().c_str()));
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
AvbSlotVerifyData* slot_data = NULL;
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_METADATA,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_EQ(nullptr, slot_data);
}
// Check that chain descriptors in chained partitions are caught in
// avb_slot_verify().
TEST_F(AvbSlotVerifyTest, ChainedPartitionEnforceNoChainPartitions) {
size_t boot_partition_size = 16 * 1024 * 1024;
const size_t boot_image_size = 5 * 1024 * 1024;
base::FilePath boot_path = GenerateImage("boot_a.img", boot_image_size);
const char* requested_partitions[] = {"boot", NULL};
base::FilePath pk_path = testdir_.Append("testkey_rsa4096.avbpubkey");
EXPECT_COMMAND(
0,
"./avbtool extract_public_key --key test/data/testkey_rsa4096.pem"
" --output %s",
pk_path.value().c_str());
EXPECT_COMMAND(0,
"./avbtool add_hash_footer"
" --image %s"
" --kernel_cmdline 'cmdline2 in hash footer'"
" --rollback_index 12"
" --partition_name boot"
" --partition_size %zd"
" --algorithm SHA256_RSA4096"
" --key test/data/testkey_rsa4096.pem"
" --salt deadbeef"
" --chain_partition other:2:%s"
" --internal_release_string \"\"",
boot_path.value().c_str(),
boot_partition_size,
pk_path.value().c_str());
GenerateVBMetaImage(
"vbmeta_a.img",
"SHA256_RSA2048",
11,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf("--chain_partition boot:1:%s"
" --kernel_cmdline 'cmdline2 in vbmeta'"
" --internal_release_string \"\"",
pk_path.value().c_str()));
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
AvbSlotVerifyData* slot_data = NULL;
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_METADATA,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"_a",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_EQ(nullptr, slot_data);
}
TEST_F(AvbSlotVerifyTest, HashtreeErrorModes) {
const size_t MiB = 1024 * 1024;
const size_t system_size = 16 * MiB;
const size_t system_part_size = 32 * MiB;
base::FilePath system_path = GenerateImage("system.img", system_size);
EXPECT_COMMAND(0,
"./avbtool add_hashtree_footer --salt d00df00d --image %s "
"--partition_size %d --partition_name system "
"--algorithm SHA256_RSA2048 "
"--key test/data/testkey_rsa2048.pem "
"--internal_release_string \"\" "
"--do_not_generate_fec",
system_path.value().c_str(),
(int)system_part_size);
GenerateVBMetaImage("vbmeta.img",
"SHA256_RSA2048",
0,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf("--setup_rootfs_from_kernel %s "
"--include_descriptors_from_image %s"
" --internal_release_string \"\"",
system_path.value().c_str(),
system_path.value().c_str()));
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
AvbSlotVerifyData* slot_data = NULL;
const char* requested_partitions[] = {"boot", NULL};
// For AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE we should get
// androidboot.vbmeta.invalidate_on_error=yes and
// androidboot.veritymode=enforcing. We should get
// 'restart_on_corruption' in the dm="..." string.
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
&slot_data));
EXPECT_NE(nullptr, slot_data);
EXPECT_EQ(
"dm=\"1 vroot none ro 1,0 32768 verity 1 "
"PARTUUID=1234-fake-guid-for:system "
"PARTUUID=1234-fake-guid-for:system 4096 4096 4096 4096 sha1 "
"c9ffc3bfae5000269a55a56621547fd1fcf819df d00df00d 2 "
"restart_on_corruption ignore_zero_blocks\" root=/dev/dm-0 "
"androidboot.vbmeta.device=PARTUUID=1234-fake-guid-for:vbmeta "
"androidboot.vbmeta.avb_version=1.1 "
"androidboot.vbmeta.device_state=locked "
"androidboot.vbmeta.hash_alg=sha256 "
"androidboot.vbmeta.size=1664 "
"androidboot.vbmeta.digest="
"e6c8c7d819f6b05ec0ebf7f73ee3b09f8d395e70ee040fe34f8fa6bccc8df798 "
"androidboot.vbmeta.invalidate_on_error=yes "
"androidboot.veritymode=enforcing",
std::string(slot_data->cmdline));
avb_slot_verify_data_free(slot_data);
// For AVB_HASHTREE_ERROR_MODE_RESTART we should get
// androidboot.veritymode=enforcing and
// androidboot.vbmeta.invalidate_on_error should be unset. We should
// get 'restart_on_corruption' in the dm="..." string.
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_RESTART,
&slot_data));
EXPECT_NE(nullptr, slot_data);
EXPECT_EQ(
"dm=\"1 vroot none ro 1,0 32768 verity 1 "
"PARTUUID=1234-fake-guid-for:system "
"PARTUUID=1234-fake-guid-for:system 4096 4096 4096 4096 sha1 "
"c9ffc3bfae5000269a55a56621547fd1fcf819df d00df00d 2 "
"restart_on_corruption ignore_zero_blocks\" root=/dev/dm-0 "
"androidboot.vbmeta.device=PARTUUID=1234-fake-guid-for:vbmeta "
"androidboot.vbmeta.avb_version=1.1 "
"androidboot.vbmeta.device_state=locked "
"androidboot.vbmeta.hash_alg=sha256 "
"androidboot.vbmeta.size=1664 "
"androidboot.vbmeta.digest="
"e6c8c7d819f6b05ec0ebf7f73ee3b09f8d395e70ee040fe34f8fa6bccc8df798 "
"androidboot.veritymode=enforcing",
std::string(slot_data->cmdline));
avb_slot_verify_data_free(slot_data);
// For AVB_HASHTREE_ERROR_MODE_EIO we should get
// androidboot.veritymode=eio and
// androidboot.vbmeta.invalidate_on_error should be unset. We should
// get 'ignore_zero_blocks' in the dm="..." string.
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_EIO,
&slot_data));
EXPECT_NE(nullptr, slot_data);
EXPECT_EQ(
"dm=\"1 vroot none ro 1,0 32768 verity 1 "
"PARTUUID=1234-fake-guid-for:system "
"PARTUUID=1234-fake-guid-for:system 4096 4096 4096 4096 sha1 "
"c9ffc3bfae5000269a55a56621547fd1fcf819df d00df00d 2 "
"ignore_zero_blocks ignore_zero_blocks\" root=/dev/dm-0 "
"androidboot.vbmeta.device=PARTUUID=1234-fake-guid-for:vbmeta "
"androidboot.vbmeta.avb_version=1.1 "
"androidboot.vbmeta.device_state=locked "
"androidboot.vbmeta.hash_alg=sha256 "
"androidboot.vbmeta.size=1664 "
"androidboot.vbmeta.digest="
"e6c8c7d819f6b05ec0ebf7f73ee3b09f8d395e70ee040fe34f8fa6bccc8df798 "
"androidboot.veritymode=eio",
std::string(slot_data->cmdline));
avb_slot_verify_data_free(slot_data);
// For AVB_HASHTREE_ERROR_MODE_LOGGING we should get
// androidboot.veritymode=logging and
// androidboot.vbmeta.invalidate_on_error should be unset. We should
// get 'ignore_corruption' in the dm="..." string.
//
// Check AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_ARGUMENT is returned
// unless we pass AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR.
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_ARGUMENT,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"",
AVB_SLOT_VERIFY_FLAGS_NONE,
AVB_HASHTREE_ERROR_MODE_LOGGING,
&slot_data));
EXPECT_EQ(nullptr, slot_data);
// --
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"",
AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR,
AVB_HASHTREE_ERROR_MODE_LOGGING,
&slot_data));
EXPECT_NE(nullptr, slot_data);
EXPECT_EQ(
"dm=\"1 vroot none ro 1,0 32768 verity 1 "
"PARTUUID=1234-fake-guid-for:system "
"PARTUUID=1234-fake-guid-for:system 4096 4096 4096 4096 sha1 "
"c9ffc3bfae5000269a55a56621547fd1fcf819df d00df00d 2 "
"ignore_corruption ignore_zero_blocks\" root=/dev/dm-0 "
"androidboot.vbmeta.device=PARTUUID=1234-fake-guid-for:vbmeta "
"androidboot.vbmeta.avb_version=1.1 "
"androidboot.vbmeta.device_state=locked "
"androidboot.vbmeta.hash_alg=sha256 "
"androidboot.vbmeta.size=1664 "
"androidboot.vbmeta.digest="
"e6c8c7d819f6b05ec0ebf7f73ee3b09f8d395e70ee040fe34f8fa6bccc8df798 "
"androidboot.veritymode=logging",
std::string(slot_data->cmdline));
avb_slot_verify_data_free(slot_data);
// Check we'll get androidboot.veritymode=disabled for any
// |hashtree_error_mode| if dm-verity is disabled.
GenerateVBMetaImage("vbmeta.img",
"SHA256_RSA2048",
0,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf("--setup_rootfs_from_kernel %s "
"--include_descriptors_from_image %s "
"--set_hashtree_disabled_flag "
"--internal_release_string \"\"",
system_path.value().c_str(),
system_path.value().c_str()));
for (int n = 0; n < 4; n++) {
AvbHashtreeErrorMode modes[4] = {
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE,
AVB_HASHTREE_ERROR_MODE_RESTART,
AVB_HASHTREE_ERROR_MODE_EIO,
AVB_HASHTREE_ERROR_MODE_LOGGING};
EXPECT_EQ(AVB_SLOT_VERIFY_RESULT_OK,
avb_slot_verify(ops_.avb_ops(),
requested_partitions,
"",
AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR,
modes[n],
&slot_data));
EXPECT_NE(nullptr, slot_data);
EXPECT_EQ(
"root=PARTUUID=1234-fake-guid-for:system "
"androidboot.vbmeta.device=PARTUUID=1234-fake-guid-for:vbmeta "
"androidboot.vbmeta.avb_version=1.1 "
"androidboot.vbmeta.device_state=locked "
"androidboot.vbmeta.hash_alg=sha256 "
"androidboot.vbmeta.size=1664 "
"androidboot.vbmeta.digest="
"e73a466d63f451dcf5c051ff12a32c006ba282a34b37420c0d563f0282cad703 "
"androidboot.veritymode=disabled",
std::string(slot_data->cmdline));
avb_slot_verify_data_free(slot_data);
}
}
class AvbSlotVerifyTestWithPersistentDigest : public AvbSlotVerifyTest {
protected:
void SetupWithHashDescriptor(bool do_not_use_ab = true) {
const size_t factory_partition_size = 16 * 1024 * 1024;
const size_t factory_image_size = 5 * 1024 * 1024;
base::FilePath factory_path =
GenerateImage("factory.img", factory_image_size);
EXPECT_COMMAND(0,
"./avbtool add_hash_footer"
" --image %s"
" --rollback_index 0"
" --partition_name factory"
" --partition_size %zd"
" --internal_release_string \"\""
" --use_persistent_digest %s",
factory_path.value().c_str(),
factory_partition_size,
do_not_use_ab ? "--do_not_use_ab" : "");
GenerateVBMetaImage(
"vbmeta_a.img",
"SHA256_RSA2048",
0,
base::FilePath("test/data/testkey_rsa2048.pem"),
base::StringPrintf("--internal_release_string \"\" "
"--include_descriptors_from_image %s ",
factory_path.value().c_str()));
EXPECT_EQ(base::StringPrintf("Minimum libavb version: 1.1\n"
"Header Block: 256 bytes\n"
"Authentication Block: 320 bytes\n"
"Auxiliary Block: 704 bytes\n"
"Algorithm: SHA256_RSA2048\n"
"Rollback Index: 0\n"
"Flags: 0\n"
"Release String: ''\n"
"Descriptors:\n"
" Hash descriptor:\n"
" Image Size: 5242880 bytes\n"
" Hash Algorithm: sha256\n"
" Partition Name: factory\n"
" Salt: \n"
" Digest: \n"
" Flags: %d\n",
do_not_use_ab ? 1 : 0),
InfoImage(vbmeta_image_path_));
ops_.set_expected_public_key(
PublicKeyAVB(base::FilePath("test/data/testkey_rsa2048.pem")));
}
void SetupWithHashtreeDescriptor(bool do_not_use_ab = true) {
const size_t factory_partition_size = 16 * 1024 * 1024;
const size_t factory_image_size = 5 * 1024 * 1024;
base::FilePath factory_path =
GenerateImage("factory.img", factory_image_size);
EXPECT_COMMAND(
0,
"./avbtool add_hashtree_footer"
" --image %s"
" --rollback_index 0"
" --partition_name factory"
" --partition_size %zd"
" --hash_algorithm %s"
" --internal_release_string \"\""
" --kernel_cmdline "
"'androidboot.vbmeta.root_digest.factory=$(AVB_FACTORY_ROOT_DIGEST)'"
" --use_persistent_digest %s",
factory_path.value().c_str(),
factory_partition_size,
verity_hash_algorithm_.c_str(),
do_not_use_ab ? "--do_not_use_ab" : "");
GenerateVBMetaImage(
"vbmeta_a.img",
"SHA256_RSA2048",