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141 lines
5.3 KiB
141 lines
5.3 KiB
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <gtest/gtest.h>
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#include <libavb_aftl/libavb_aftl.h>
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#include "avb_unittest_util.h"
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#include "fake_avb_ops.h"
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#include "libavb_aftl/avb_aftl_types.h"
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#include "libavb_aftl/avb_aftl_util.h"
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#include "libavb_aftl/avb_aftl_validate.h"
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#include "libavb_aftl/avb_aftl_verify.h"
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namespace {
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/* Log transparency key */
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const char kAftlTestKey[] = "test/data/aftl_pubkey_1.bin";
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/* Full VBMeta partition which contains an AftlImage */
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/* TODO(b/154115873): These VBMetas are manually generated. We need to implement
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* a mock in aftltool that generates an inclusion proof and call that mock from
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* the unit tests, similarly to what is done with GenerateVBMetaImage. */
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const char kVbmetaWithAftlDescBin[] =
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"test/data/aftl_output_vbmeta_with_1_icp.img";
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/* Size of the VBMetaImage in the partition */
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const uint64_t kVbmetaSize = 0x1100;
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} /* namespace */
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namespace avb {
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/* Extend BaseAvbToolTest to take advantage of common checks and tooling. */
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class AvbAftlVerifyTest : public BaseAvbToolTest,
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public FakeAvbOpsDelegateWithDefaults {
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public:
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AvbAftlVerifyTest() {}
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~AvbAftlVerifyTest() {}
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void SetUp() override {
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BaseAvbToolTest::SetUp();
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ops_.set_delegate(this);
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ops_.set_partition_dir(base::FilePath("test/data"));
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asv_test_data_ = NULL;
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/* Read in the test data. */
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ASSERT_TRUE(base::ReadFileToString(base::FilePath(kAftlTestKey), &key_));
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ASSERT_TRUE(base::ReadFileToString(base::FilePath(kVbmetaWithAftlDescBin),
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&vbmeta_icp_));
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/* Keep a truncated version of the image without the ICP */
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vbmeta_ = vbmeta_icp_.substr(0, kVbmetaSize);
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/* Set up required parts of asv_test_data */
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asv_test_data_ = (AvbSlotVerifyData*)avb_calloc(sizeof(AvbSlotVerifyData));
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ASSERT_TRUE(asv_test_data_ != NULL);
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asv_test_data_->ab_suffix = (char*)"";
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asv_test_data_->num_vbmeta_images = 1;
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asv_test_data_->vbmeta_images =
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(AvbVBMetaData*)avb_calloc(sizeof(AvbVBMetaData));
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ASSERT_TRUE(asv_test_data_->vbmeta_images != NULL);
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asv_test_data_->vbmeta_images[0].vbmeta_size = vbmeta_.size();
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asv_test_data_->vbmeta_images[0].vbmeta_data =
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(uint8_t*)avb_calloc(vbmeta_.size());
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ASSERT_TRUE(asv_test_data_->vbmeta_images[0].vbmeta_data != NULL);
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memcpy(asv_test_data_->vbmeta_images[0].vbmeta_data,
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vbmeta_.data(),
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vbmeta_.size());
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asv_test_data_->vbmeta_images[0].partition_name =
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(char*)"aftl_output_vbmeta_with_1_icp";
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}
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void TearDown() override {
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if (asv_test_data_ != NULL) {
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if (asv_test_data_->vbmeta_images != NULL) {
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if (asv_test_data_->vbmeta_images[0].vbmeta_data != NULL) {
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avb_free(asv_test_data_->vbmeta_images[0].vbmeta_data);
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}
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avb_free(asv_test_data_->vbmeta_images);
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}
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avb_free(asv_test_data_);
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}
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BaseAvbToolTest::TearDown();
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}
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protected:
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AvbSlotVerifyData* asv_test_data_;
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std::string key_;
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std::string vbmeta_;
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std::string vbmeta_icp_;
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};
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TEST_F(AvbAftlVerifyTest, Basic) {
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AftlSlotVerifyResult result = aftl_slot_verify(
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ops_.avb_ops(), asv_test_data_, (uint8_t*)key_.data(), key_.size());
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EXPECT_EQ(result, AFTL_SLOT_VERIFY_RESULT_OK);
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}
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TEST_F(AvbAftlVerifyTest, PartitionError) {
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asv_test_data_->vbmeta_images[0].partition_name = (char*)"do-no-exist";
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AftlSlotVerifyResult result = aftl_slot_verify(
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ops_.avb_ops(), asv_test_data_, (uint8_t*)key_.data(), key_.size());
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EXPECT_EQ(result, AFTL_SLOT_VERIFY_RESULT_ERROR_IMAGE_NOT_FOUND);
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}
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TEST_F(AvbAftlVerifyTest, MismatchingVBMeta) {
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asv_test_data_->vbmeta_images[0].vbmeta_data[0] = 'X';
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AftlSlotVerifyResult result = aftl_slot_verify(
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ops_.avb_ops(), asv_test_data_, (uint8_t*)key_.data(), key_.size());
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EXPECT_EQ(result, AFTL_SLOT_VERIFY_RESULT_ERROR_VBMETA_HASH_MISMATCH);
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}
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TEST_F(AvbAftlVerifyTest, InvalidKey) {
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// Corrupt the key in order to fail the verification: complement the last
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// byte, we keep the key header valid.
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key_[key_.size() - 1] = ~key_[key_.size() - 1];
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AftlSlotVerifyResult result = aftl_slot_verify(
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ops_.avb_ops(), asv_test_data_, (uint8_t*)key_.data(), key_.size());
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EXPECT_EQ(result, AFTL_SLOT_VERIFY_RESULT_ERROR_INVALID_PROOF_SIGNATURE);
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}
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} /* namespace avb */
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