| /* |
| * 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. |
| */ |
| |
| #ifndef AVB_UNITTEST_UTIL_H_ |
| #define AVB_UNITTEST_UTIL_H_ |
| |
| #include <inttypes.h> |
| |
| #include <gtest/gtest.h> |
| |
| #include <base/files/file_util.h> |
| #include <base/strings/string_util.h> |
| #include <base/strings/stringprintf.h> |
| |
| /* Utility macro to run the command expressed by the printf()-style string |
| * |command_format| using the system(3) utility function. Will assert unless |
| * the command exits normally with exit status |expected_exit_status|. |
| */ |
| #define EXPECT_COMMAND(expected_exit_status, command_format, ...) \ |
| do { \ |
| int rc = \ |
| system(base::StringPrintf(command_format, ##__VA_ARGS__).c_str()); \ |
| EXPECT_TRUE(WIFEXITED(rc)); \ |
| EXPECT_EQ(WEXITSTATUS(rc), expected_exit_status); \ |
| } while (0); |
| |
| /* Base-class used for unit test. */ |
| class BaseAvbToolTest : public ::testing::Test { |
| public: |
| BaseAvbToolTest() {} |
| |
| protected: |
| virtual ~BaseAvbToolTest() {} |
| |
| /* Generates a vbmeta image, using avbtoool, with file name |
| * |image_name|. The generated vbmeta image will written to disk, |
| * see the |vbmeta_image_path_| variable for its path and |
| * |vbmeta_image_| for the content. |
| */ |
| void GenerateVBMetaImage(const std::string& image_name, |
| const std::string& algorithm, |
| uint64_t rollback_index, |
| const base::FilePath& key_path, |
| const std::string& additional_options = "") { |
| std::string signing_options; |
| if (algorithm == "") { |
| signing_options = " --algorithm NONE "; |
| } else { |
| signing_options = std::string(" --algorithm ") + algorithm + " --key " + |
| key_path.value() + " "; |
| } |
| vbmeta_image_path_ = testdir_.Append(image_name); |
| EXPECT_COMMAND(0, |
| "./avbtool make_vbmeta_image" |
| " --rollback_index %" PRIu64 |
| " %s %s " |
| " --output %s", |
| rollback_index, additional_options.c_str(), |
| signing_options.c_str(), vbmeta_image_path_.value().c_str()); |
| int64_t file_size; |
| ASSERT_TRUE(base::GetFileSize(vbmeta_image_path_, &file_size)); |
| vbmeta_image_.resize(file_size); |
| ASSERT_TRUE(base::ReadFile(vbmeta_image_path_, |
| reinterpret_cast<char*>(vbmeta_image_.data()), |
| vbmeta_image_.size())); |
| } |
| |
| /* Generate a file with name |file_name| of size |image_size| with |
| * known content (0x00 0x01 0x02 .. 0xff 0x00 0x01 ..). |
| */ |
| base::FilePath GenerateImage(const std::string file_name, size_t image_size) { |
| std::vector<uint8_t> image; |
| image.resize(image_size); |
| for (size_t n = 0; n < image_size; n++) { |
| image[n] = uint8_t(n); |
| } |
| base::FilePath image_path = testdir_.Append(file_name); |
| EXPECT_EQ(image_size, |
| static_cast<const size_t>(base::WriteFile( |
| image_path, reinterpret_cast<const char*>(image.data()), |
| image.size()))); |
| return image_path; |
| } |
| |
| /* Returns the output of 'avbtool info_image' for a given image. */ |
| std::string InfoImage(const base::FilePath& image_path) { |
| base::FilePath tmp_path = testdir_.Append("info_output.txt"); |
| EXPECT_COMMAND(0, "./avbtool info_image --image %s --output %s", |
| image_path.value().c_str(), tmp_path.value().c_str()); |
| std::string info_data; |
| EXPECT_TRUE(base::ReadFileToString(tmp_path, &info_data)); |
| return info_data; |
| } |
| |
| /* Returns public key in AVB format for a .pem key */ |
| std::string PublicKeyAVB(const base::FilePath& key_path) { |
| base::FilePath tmp_path = testdir_.Append("public_key.bin"); |
| EXPECT_COMMAND(0, |
| "./avbtool extract_public_key --key %s" |
| " --output %s", |
| key_path.value().c_str(), tmp_path.value().c_str()); |
| std::string key_data; |
| EXPECT_TRUE(base::ReadFileToString(tmp_path, &key_data)); |
| return key_data; |
| } |
| |
| /* Create temporary directory to stash images in. */ |
| virtual void SetUp() override { |
| base::FilePath ret; |
| char* buf = strdup("/tmp/libavb-tests.XXXXXX"); |
| ASSERT_TRUE(mkdtemp(buf) != nullptr); |
| testdir_ = base::FilePath(buf); |
| free(buf); |
| } |
| |
| /* Nuke temporary directory. */ |
| virtual void TearDown() override { |
| ASSERT_EQ(0U, testdir_.value().find("/tmp/libavb-tests")); |
| ASSERT_TRUE(base::DeleteFile(testdir_, true /* recursive */)); |
| } |
| |
| /* Temporary directory created in SetUp(). */ |
| base::FilePath testdir_; |
| |
| /* Path to vbmeta image generated with GenerateVBMetaImage(). */ |
| base::FilePath vbmeta_image_path_; |
| |
| /* Contents of the image generated with GenerateVBMetaImage(). */ |
| std::vector<uint8_t> vbmeta_image_; |
| }; |
| |
| #endif /* AVB_UNITTEST_UTIL_H_ */ |