| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <stdio.h> |
| |
| #include <algorithm> |
| #include <string> |
| #include <tuple> |
| #include <vector> |
| |
| #include <android-base/file.h> |
| #include <android-base/memory.h> |
| #include <android-base/stringprintf.h> |
| #include <android-base/strings.h> |
| #include <android-base/test_utils.h> |
| #include <applypatch/imgdiff.h> |
| #include <applypatch/imgdiff_image.h> |
| #include <applypatch/imgpatch.h> |
| #include <gtest/gtest.h> |
| #include <ziparchive/zip_writer.h> |
| |
| #include "common/test_constants.h" |
| |
| using android::base::get_unaligned; |
| |
| // Sanity check for the given imgdiff patch header. |
| static void verify_patch_header(const std::string& patch, size_t* num_normal, size_t* num_raw, |
| size_t* num_deflate) { |
| const size_t size = patch.size(); |
| const char* data = patch.data(); |
| |
| ASSERT_GE(size, 12U); |
| ASSERT_EQ("IMGDIFF2", std::string(data, 8)); |
| |
| const int num_chunks = get_unaligned<int32_t>(data + 8); |
| ASSERT_GE(num_chunks, 0); |
| |
| size_t normal = 0; |
| size_t raw = 0; |
| size_t deflate = 0; |
| |
| size_t pos = 12; |
| for (int i = 0; i < num_chunks; ++i) { |
| ASSERT_LE(pos + 4, size); |
| int type = get_unaligned<int32_t>(data + pos); |
| pos += 4; |
| if (type == CHUNK_NORMAL) { |
| pos += 24; |
| ASSERT_LE(pos, size); |
| normal++; |
| } else if (type == CHUNK_RAW) { |
| ASSERT_LE(pos + 4, size); |
| ssize_t data_len = get_unaligned<int32_t>(data + pos); |
| ASSERT_GT(data_len, 0); |
| pos += 4 + data_len; |
| ASSERT_LE(pos, size); |
| raw++; |
| } else if (type == CHUNK_DEFLATE) { |
| pos += 60; |
| ASSERT_LE(pos, size); |
| deflate++; |
| } else { |
| FAIL() << "Invalid patch type: " << type; |
| } |
| } |
| |
| if (num_normal != nullptr) *num_normal = normal; |
| if (num_raw != nullptr) *num_raw = raw; |
| if (num_deflate != nullptr) *num_deflate = deflate; |
| } |
| |
| static void GenerateTarget(const std::string& src, const std::string& patch, std::string* patched) { |
| patched->clear(); |
| ASSERT_EQ(0, ApplyImagePatch(reinterpret_cast<const unsigned char*>(src.data()), src.size(), |
| reinterpret_cast<const unsigned char*>(patch.data()), patch.size(), |
| [&](const unsigned char* data, size_t len) { |
| patched->append(reinterpret_cast<const char*>(data), len); |
| return len; |
| })); |
| } |
| |
| static void verify_patched_image(const std::string& src, const std::string& patch, |
| const std::string& tgt) { |
| std::string patched; |
| GenerateTarget(src, patch, &patched); |
| ASSERT_EQ(tgt, patched); |
| } |
| |
| TEST(ImgdiffTest, invalid_args) { |
| // Insufficient inputs. |
| ASSERT_EQ(2, imgdiff(1, (const char* []){ "imgdiff" })); |
| ASSERT_EQ(2, imgdiff(2, (const char* []){ "imgdiff", "-z" })); |
| ASSERT_EQ(2, imgdiff(2, (const char* []){ "imgdiff", "-b" })); |
| ASSERT_EQ(2, imgdiff(3, (const char* []){ "imgdiff", "-z", "-b" })); |
| |
| // Failed to read bonus file. |
| ASSERT_EQ(1, imgdiff(3, (const char* []){ "imgdiff", "-b", "doesntexist" })); |
| |
| // Failed to read input files. |
| ASSERT_EQ(1, imgdiff(4, (const char* []){ "imgdiff", "doesntexist", "doesntexist", "output" })); |
| ASSERT_EQ( |
| 1, imgdiff(5, (const char* []){ "imgdiff", "-z", "doesntexist", "doesntexist", "output" })); |
| } |
| |
| TEST(ImgdiffTest, image_mode_smoke) { |
| // Random bytes. |
| const std::string src("abcdefg"); |
| TemporaryFile src_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(src, src_file.path)); |
| |
| const std::string tgt("abcdefgxyz"); |
| TemporaryFile tgt_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(tgt, tgt_file.path)); |
| |
| TemporaryFile patch_file; |
| std::vector<const char*> args = { |
| "imgdiff", src_file.path, tgt_file.path, patch_file.path, |
| }; |
| ASSERT_EQ(0, imgdiff(args.size(), args.data())); |
| |
| // Verify. |
| std::string patch; |
| ASSERT_TRUE(android::base::ReadFileToString(patch_file.path, &patch)); |
| |
| // Expect one CHUNK_RAW entry. |
| size_t num_normal; |
| size_t num_raw; |
| size_t num_deflate; |
| verify_patch_header(patch, &num_normal, &num_raw, &num_deflate); |
| ASSERT_EQ(0U, num_normal); |
| ASSERT_EQ(0U, num_deflate); |
| ASSERT_EQ(1U, num_raw); |
| |
| verify_patched_image(src, patch, tgt); |
| } |
| |
| TEST(ImgdiffTest, zip_mode_smoke_store) { |
| // Construct src and tgt zip files. |
| TemporaryFile src_file; |
| FILE* src_file_ptr = fdopen(src_file.release(), "wb"); |
| ZipWriter src_writer(src_file_ptr); |
| ASSERT_EQ(0, src_writer.StartEntry("file1.txt", 0)); // Store mode. |
| const std::string src_content("abcdefg"); |
| ASSERT_EQ(0, src_writer.WriteBytes(src_content.data(), src_content.size())); |
| ASSERT_EQ(0, src_writer.FinishEntry()); |
| ASSERT_EQ(0, src_writer.Finish()); |
| ASSERT_EQ(0, fclose(src_file_ptr)); |
| |
| TemporaryFile tgt_file; |
| FILE* tgt_file_ptr = fdopen(tgt_file.release(), "wb"); |
| ZipWriter tgt_writer(tgt_file_ptr); |
| ASSERT_EQ(0, tgt_writer.StartEntry("file1.txt", 0)); // Store mode. |
| const std::string tgt_content("abcdefgxyz"); |
| ASSERT_EQ(0, tgt_writer.WriteBytes(tgt_content.data(), tgt_content.size())); |
| ASSERT_EQ(0, tgt_writer.FinishEntry()); |
| ASSERT_EQ(0, tgt_writer.Finish()); |
| ASSERT_EQ(0, fclose(tgt_file_ptr)); |
| |
| // Compute patch. |
| TemporaryFile patch_file; |
| std::vector<const char*> args = { |
| "imgdiff", "-z", src_file.path, tgt_file.path, patch_file.path, |
| }; |
| ASSERT_EQ(0, imgdiff(args.size(), args.data())); |
| |
| // Verify. |
| std::string tgt; |
| ASSERT_TRUE(android::base::ReadFileToString(tgt_file.path, &tgt)); |
| std::string src; |
| ASSERT_TRUE(android::base::ReadFileToString(src_file.path, &src)); |
| std::string patch; |
| ASSERT_TRUE(android::base::ReadFileToString(patch_file.path, &patch)); |
| |
| // Expect one CHUNK_RAW entry. |
| size_t num_normal; |
| size_t num_raw; |
| size_t num_deflate; |
| verify_patch_header(patch, &num_normal, &num_raw, &num_deflate); |
| ASSERT_EQ(0U, num_normal); |
| ASSERT_EQ(0U, num_deflate); |
| ASSERT_EQ(1U, num_raw); |
| |
| verify_patched_image(src, patch, tgt); |
| } |
| |
| TEST(ImgdiffTest, zip_mode_smoke_compressed) { |
| // Construct src and tgt zip files. |
| TemporaryFile src_file; |
| FILE* src_file_ptr = fdopen(src_file.release(), "wb"); |
| ZipWriter src_writer(src_file_ptr); |
| ASSERT_EQ(0, src_writer.StartEntry("file1.txt", ZipWriter::kCompress)); |
| const std::string src_content("abcdefg"); |
| ASSERT_EQ(0, src_writer.WriteBytes(src_content.data(), src_content.size())); |
| ASSERT_EQ(0, src_writer.FinishEntry()); |
| ASSERT_EQ(0, src_writer.Finish()); |
| ASSERT_EQ(0, fclose(src_file_ptr)); |
| |
| TemporaryFile tgt_file; |
| FILE* tgt_file_ptr = fdopen(tgt_file.release(), "wb"); |
| ZipWriter tgt_writer(tgt_file_ptr); |
| ASSERT_EQ(0, tgt_writer.StartEntry("file1.txt", ZipWriter::kCompress)); |
| const std::string tgt_content("abcdefgxyz"); |
| ASSERT_EQ(0, tgt_writer.WriteBytes(tgt_content.data(), tgt_content.size())); |
| ASSERT_EQ(0, tgt_writer.FinishEntry()); |
| ASSERT_EQ(0, tgt_writer.Finish()); |
| ASSERT_EQ(0, fclose(tgt_file_ptr)); |
| |
| // Compute patch. |
| TemporaryFile patch_file; |
| std::vector<const char*> args = { |
| "imgdiff", "-z", src_file.path, tgt_file.path, patch_file.path, |
| }; |
| ASSERT_EQ(0, imgdiff(args.size(), args.data())); |
| |
| // Verify. |
| std::string tgt; |
| ASSERT_TRUE(android::base::ReadFileToString(tgt_file.path, &tgt)); |
| std::string src; |
| ASSERT_TRUE(android::base::ReadFileToString(src_file.path, &src)); |
| std::string patch; |
| ASSERT_TRUE(android::base::ReadFileToString(patch_file.path, &patch)); |
| |
| // Expect three entries: CHUNK_RAW (header) + CHUNK_DEFLATE (data) + CHUNK_RAW (footer). |
| size_t num_normal; |
| size_t num_raw; |
| size_t num_deflate; |
| verify_patch_header(patch, &num_normal, &num_raw, &num_deflate); |
| ASSERT_EQ(0U, num_normal); |
| ASSERT_EQ(1U, num_deflate); |
| ASSERT_EQ(2U, num_raw); |
| |
| verify_patched_image(src, patch, tgt); |
| } |
| |
| TEST(ImgdiffTest, zip_mode_smoke_trailer_zeros) { |
| // Construct src and tgt zip files. |
| TemporaryFile src_file; |
| FILE* src_file_ptr = fdopen(src_file.release(), "wb"); |
| ZipWriter src_writer(src_file_ptr); |
| ASSERT_EQ(0, src_writer.StartEntry("file1.txt", ZipWriter::kCompress)); |
| const std::string src_content("abcdefg"); |
| ASSERT_EQ(0, src_writer.WriteBytes(src_content.data(), src_content.size())); |
| ASSERT_EQ(0, src_writer.FinishEntry()); |
| ASSERT_EQ(0, src_writer.Finish()); |
| ASSERT_EQ(0, fclose(src_file_ptr)); |
| |
| TemporaryFile tgt_file; |
| FILE* tgt_file_ptr = fdopen(tgt_file.release(), "wb"); |
| ZipWriter tgt_writer(tgt_file_ptr); |
| ASSERT_EQ(0, tgt_writer.StartEntry("file1.txt", ZipWriter::kCompress)); |
| const std::string tgt_content("abcdefgxyz"); |
| ASSERT_EQ(0, tgt_writer.WriteBytes(tgt_content.data(), tgt_content.size())); |
| ASSERT_EQ(0, tgt_writer.FinishEntry()); |
| ASSERT_EQ(0, tgt_writer.Finish()); |
| // Add trailing zeros to the target zip file. |
| std::vector<uint8_t> zeros(10); |
| ASSERT_EQ(zeros.size(), fwrite(zeros.data(), sizeof(uint8_t), zeros.size(), tgt_file_ptr)); |
| ASSERT_EQ(0, fclose(tgt_file_ptr)); |
| |
| // Compute patch. |
| TemporaryFile patch_file; |
| std::vector<const char*> args = { |
| "imgdiff", "-z", src_file.path, tgt_file.path, patch_file.path, |
| }; |
| ASSERT_EQ(0, imgdiff(args.size(), args.data())); |
| |
| // Verify. |
| std::string tgt; |
| ASSERT_TRUE(android::base::ReadFileToString(tgt_file.path, &tgt)); |
| std::string src; |
| ASSERT_TRUE(android::base::ReadFileToString(src_file.path, &src)); |
| std::string patch; |
| ASSERT_TRUE(android::base::ReadFileToString(patch_file.path, &patch)); |
| |
| // Expect three entries: CHUNK_RAW (header) + CHUNK_DEFLATE (data) + CHUNK_RAW (footer). |
| size_t num_normal; |
| size_t num_raw; |
| size_t num_deflate; |
| verify_patch_header(patch, &num_normal, &num_raw, &num_deflate); |
| ASSERT_EQ(0U, num_normal); |
| ASSERT_EQ(1U, num_deflate); |
| ASSERT_EQ(2U, num_raw); |
| |
| verify_patched_image(src, patch, tgt); |
| } |
| |
| TEST(ImgdiffTest, image_mode_simple) { |
| // src: "abcdefgh" + gzipped "xyz" (echo -n "xyz" | gzip -f | hd). |
| const std::vector<char> src_data = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', |
| 'h', '\x1f', '\x8b', '\x08', '\x00', '\xc4', '\x1e', |
| '\x53', '\x58', '\x00', '\x03', '\xab', '\xa8', '\xac', |
| '\x02', '\x00', '\x67', '\xba', '\x8e', '\xeb', '\x03', |
| '\x00', '\x00', '\x00' }; |
| const std::string src(src_data.cbegin(), src_data.cend()); |
| TemporaryFile src_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(src, src_file.path)); |
| |
| // tgt: "abcdefgxyz" + gzipped "xxyyzz". |
| const std::vector<char> tgt_data = { |
| 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'x', 'y', 'z', '\x1f', '\x8b', |
| '\x08', '\x00', '\x62', '\x1f', '\x53', '\x58', '\x00', '\x03', '\xab', '\xa8', '\xa8', '\xac', |
| '\xac', '\xaa', '\x02', '\x00', '\x96', '\x30', '\x06', '\xb7', '\x06', '\x00', '\x00', '\x00' |
| }; |
| const std::string tgt(tgt_data.cbegin(), tgt_data.cend()); |
| TemporaryFile tgt_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(tgt, tgt_file.path)); |
| |
| TemporaryFile patch_file; |
| std::vector<const char*> args = { |
| "imgdiff", src_file.path, tgt_file.path, patch_file.path, |
| }; |
| ASSERT_EQ(0, imgdiff(args.size(), args.data())); |
| |
| // Verify. |
| std::string patch; |
| ASSERT_TRUE(android::base::ReadFileToString(patch_file.path, &patch)); |
| |
| // Expect three entries: CHUNK_RAW (header) + CHUNK_DEFLATE (data) + CHUNK_RAW (footer). |
| size_t num_normal; |
| size_t num_raw; |
| size_t num_deflate; |
| verify_patch_header(patch, &num_normal, &num_raw, &num_deflate); |
| ASSERT_EQ(0U, num_normal); |
| ASSERT_EQ(1U, num_deflate); |
| ASSERT_EQ(2U, num_raw); |
| |
| verify_patched_image(src, patch, tgt); |
| } |
| |
| TEST(ImgdiffTest, image_mode_bad_gzip) { |
| // Modify the uncompressed length in the gzip footer. |
| const std::vector<char> src_data = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', |
| 'h', '\x1f', '\x8b', '\x08', '\x00', '\xc4', '\x1e', |
| '\x53', '\x58', '\x00', '\x03', '\xab', '\xa8', '\xac', |
| '\x02', '\x00', '\x67', '\xba', '\x8e', '\xeb', '\x03', |
| '\xff', '\xff', '\xff' }; |
| const std::string src(src_data.cbegin(), src_data.cend()); |
| TemporaryFile src_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(src, src_file.path)); |
| |
| // Modify the uncompressed length in the gzip footer. |
| const std::vector<char> tgt_data = { |
| 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'x', 'y', 'z', '\x1f', '\x8b', |
| '\x08', '\x00', '\x62', '\x1f', '\x53', '\x58', '\x00', '\x03', '\xab', '\xa8', '\xa8', '\xac', |
| '\xac', '\xaa', '\x02', '\x00', '\x96', '\x30', '\x06', '\xb7', '\x06', '\xff', '\xff', '\xff' |
| }; |
| const std::string tgt(tgt_data.cbegin(), tgt_data.cend()); |
| TemporaryFile tgt_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(tgt, tgt_file.path)); |
| |
| TemporaryFile patch_file; |
| std::vector<const char*> args = { |
| "imgdiff", src_file.path, tgt_file.path, patch_file.path, |
| }; |
| ASSERT_EQ(0, imgdiff(args.size(), args.data())); |
| |
| // Verify. |
| std::string patch; |
| ASSERT_TRUE(android::base::ReadFileToString(patch_file.path, &patch)); |
| verify_patched_image(src, patch, tgt); |
| } |
| |
| TEST(ImgdiffTest, image_mode_different_num_chunks) { |
| // src: "abcdefgh" + gzipped "xyz" (echo -n "xyz" | gzip -f | hd) + gzipped "test". |
| const std::vector<char> src_data = { |
| 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', '\x1f', '\x8b', '\x08', |
| '\x00', '\xc4', '\x1e', '\x53', '\x58', '\x00', '\x03', '\xab', '\xa8', '\xac', '\x02', |
| '\x00', '\x67', '\xba', '\x8e', '\xeb', '\x03', '\x00', '\x00', '\x00', '\x1f', '\x8b', |
| '\x08', '\x00', '\xb2', '\x3a', '\x53', '\x58', '\x00', '\x03', '\x2b', '\x49', '\x2d', |
| '\x2e', '\x01', '\x00', '\x0c', '\x7e', '\x7f', '\xd8', '\x04', '\x00', '\x00', '\x00' |
| }; |
| const std::string src(src_data.cbegin(), src_data.cend()); |
| TemporaryFile src_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(src, src_file.path)); |
| |
| // tgt: "abcdefgxyz" + gzipped "xxyyzz". |
| const std::vector<char> tgt_data = { |
| 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'x', 'y', 'z', '\x1f', '\x8b', |
| '\x08', '\x00', '\x62', '\x1f', '\x53', '\x58', '\x00', '\x03', '\xab', '\xa8', '\xa8', '\xac', |
| '\xac', '\xaa', '\x02', '\x00', '\x96', '\x30', '\x06', '\xb7', '\x06', '\x00', '\x00', '\x00' |
| }; |
| const std::string tgt(tgt_data.cbegin(), tgt_data.cend()); |
| TemporaryFile tgt_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(tgt, tgt_file.path)); |
| |
| TemporaryFile patch_file; |
| std::vector<const char*> args = { |
| "imgdiff", src_file.path, tgt_file.path, patch_file.path, |
| }; |
| ASSERT_EQ(1, imgdiff(args.size(), args.data())); |
| } |
| |
| TEST(ImgdiffTest, image_mode_merge_chunks) { |
| // src: "abcdefgh" + gzipped "xyz" (echo -n "xyz" | gzip -f | hd). |
| const std::vector<char> src_data = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', |
| 'h', '\x1f', '\x8b', '\x08', '\x00', '\xc4', '\x1e', |
| '\x53', '\x58', '\x00', '\x03', '\xab', '\xa8', '\xac', |
| '\x02', '\x00', '\x67', '\xba', '\x8e', '\xeb', '\x03', |
| '\x00', '\x00', '\x00' }; |
| const std::string src(src_data.cbegin(), src_data.cend()); |
| TemporaryFile src_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(src, src_file.path)); |
| |
| // tgt: gzipped "xyz" + "abcdefgh". |
| const std::vector<char> tgt_data = { |
| '\x1f', '\x8b', '\x08', '\x00', '\x62', '\x1f', '\x53', '\x58', '\x00', '\x03', '\xab', '\xa8', |
| '\xa8', '\xac', '\xac', '\xaa', '\x02', '\x00', '\x96', '\x30', '\x06', '\xb7', '\x06', '\x00', |
| '\x00', '\x00', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'x', 'y', 'z' |
| }; |
| const std::string tgt(tgt_data.cbegin(), tgt_data.cend()); |
| TemporaryFile tgt_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(tgt, tgt_file.path)); |
| |
| // Since a gzipped entry will become CHUNK_RAW (header) + CHUNK_DEFLATE (data) + |
| // CHUNK_RAW (footer), they both should contain the same chunk types after merging. |
| |
| TemporaryFile patch_file; |
| std::vector<const char*> args = { |
| "imgdiff", src_file.path, tgt_file.path, patch_file.path, |
| }; |
| ASSERT_EQ(0, imgdiff(args.size(), args.data())); |
| |
| // Verify. |
| std::string patch; |
| ASSERT_TRUE(android::base::ReadFileToString(patch_file.path, &patch)); |
| |
| // Expect three entries: CHUNK_RAW (header) + CHUNK_DEFLATE (data) + CHUNK_RAW (footer). |
| size_t num_normal; |
| size_t num_raw; |
| size_t num_deflate; |
| verify_patch_header(patch, &num_normal, &num_raw, &num_deflate); |
| ASSERT_EQ(0U, num_normal); |
| ASSERT_EQ(1U, num_deflate); |
| ASSERT_EQ(2U, num_raw); |
| |
| verify_patched_image(src, patch, tgt); |
| } |
| |
| TEST(ImgdiffTest, image_mode_spurious_magic) { |
| // src: "abcdefgh" + '0x1f8b0b00' + some bytes. |
| const std::vector<char> src_data = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', |
| 'h', '\x1f', '\x8b', '\x08', '\x00', '\xc4', '\x1e', |
| '\x53', '\x58', 't', 'e', 's', 't' }; |
| const std::string src(src_data.cbegin(), src_data.cend()); |
| TemporaryFile src_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(src, src_file.path)); |
| |
| // tgt: "abcdefgxyz". |
| const std::vector<char> tgt_data = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'x', 'y', 'z' }; |
| const std::string tgt(tgt_data.cbegin(), tgt_data.cend()); |
| TemporaryFile tgt_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(tgt, tgt_file.path)); |
| |
| TemporaryFile patch_file; |
| std::vector<const char*> args = { |
| "imgdiff", src_file.path, tgt_file.path, patch_file.path, |
| }; |
| ASSERT_EQ(0, imgdiff(args.size(), args.data())); |
| |
| // Verify. |
| std::string patch; |
| ASSERT_TRUE(android::base::ReadFileToString(patch_file.path, &patch)); |
| |
| // Expect one CHUNK_RAW (header) entry. |
| size_t num_normal; |
| size_t num_raw; |
| size_t num_deflate; |
| verify_patch_header(patch, &num_normal, &num_raw, &num_deflate); |
| ASSERT_EQ(0U, num_normal); |
| ASSERT_EQ(0U, num_deflate); |
| ASSERT_EQ(1U, num_raw); |
| |
| verify_patched_image(src, patch, tgt); |
| } |
| |
| TEST(ImgdiffTest, image_mode_short_input1) { |
| // src: "abcdefgh" + '0x1f8b0b'. |
| const std::vector<char> src_data = { 'a', 'b', 'c', 'd', 'e', 'f', |
| 'g', 'h', '\x1f', '\x8b', '\x08' }; |
| const std::string src(src_data.cbegin(), src_data.cend()); |
| TemporaryFile src_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(src, src_file.path)); |
| |
| // tgt: "abcdefgxyz". |
| const std::vector<char> tgt_data = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'x', 'y', 'z' }; |
| const std::string tgt(tgt_data.cbegin(), tgt_data.cend()); |
| TemporaryFile tgt_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(tgt, tgt_file.path)); |
| |
| TemporaryFile patch_file; |
| std::vector<const char*> args = { |
| "imgdiff", src_file.path, tgt_file.path, patch_file.path, |
| }; |
| ASSERT_EQ(0, imgdiff(args.size(), args.data())); |
| |
| // Verify. |
| std::string patch; |
| ASSERT_TRUE(android::base::ReadFileToString(patch_file.path, &patch)); |
| |
| // Expect one CHUNK_RAW (header) entry. |
| size_t num_normal; |
| size_t num_raw; |
| size_t num_deflate; |
| verify_patch_header(patch, &num_normal, &num_raw, &num_deflate); |
| ASSERT_EQ(0U, num_normal); |
| ASSERT_EQ(0U, num_deflate); |
| ASSERT_EQ(1U, num_raw); |
| |
| verify_patched_image(src, patch, tgt); |
| } |
| |
| TEST(ImgdiffTest, image_mode_short_input2) { |
| // src: "abcdefgh" + '0x1f8b0b00'. |
| const std::vector<char> src_data = { 'a', 'b', 'c', 'd', 'e', 'f', |
| 'g', 'h', '\x1f', '\x8b', '\x08', '\x00' }; |
| const std::string src(src_data.cbegin(), src_data.cend()); |
| TemporaryFile src_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(src, src_file.path)); |
| |
| // tgt: "abcdefgxyz". |
| const std::vector<char> tgt_data = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'x', 'y', 'z' }; |
| const std::string tgt(tgt_data.cbegin(), tgt_data.cend()); |
| TemporaryFile tgt_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(tgt, tgt_file.path)); |
| |
| TemporaryFile patch_file; |
| std::vector<const char*> args = { |
| "imgdiff", src_file.path, tgt_file.path, patch_file.path, |
| }; |
| ASSERT_EQ(0, imgdiff(args.size(), args.data())); |
| |
| // Verify. |
| std::string patch; |
| ASSERT_TRUE(android::base::ReadFileToString(patch_file.path, &patch)); |
| |
| // Expect one CHUNK_RAW (header) entry. |
| size_t num_normal; |
| size_t num_raw; |
| size_t num_deflate; |
| verify_patch_header(patch, &num_normal, &num_raw, &num_deflate); |
| ASSERT_EQ(0U, num_normal); |
| ASSERT_EQ(0U, num_deflate); |
| ASSERT_EQ(1U, num_raw); |
| |
| verify_patched_image(src, patch, tgt); |
| } |
| |
| TEST(ImgdiffTest, image_mode_single_entry_long) { |
| // src: "abcdefgh" + '0x1f8b0b00' + some bytes. |
| const std::vector<char> src_data = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', |
| 'h', '\x1f', '\x8b', '\x08', '\x00', '\xc4', '\x1e', |
| '\x53', '\x58', 't', 'e', 's', 't' }; |
| const std::string src(src_data.cbegin(), src_data.cend()); |
| TemporaryFile src_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(src, src_file.path)); |
| |
| // tgt: "abcdefgxyz" + 200 bytes. |
| std::vector<char> tgt_data = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'x', 'y', 'z' }; |
| tgt_data.resize(tgt_data.size() + 200); |
| |
| const std::string tgt(tgt_data.cbegin(), tgt_data.cend()); |
| TemporaryFile tgt_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(tgt, tgt_file.path)); |
| |
| TemporaryFile patch_file; |
| std::vector<const char*> args = { |
| "imgdiff", src_file.path, tgt_file.path, patch_file.path, |
| }; |
| ASSERT_EQ(0, imgdiff(args.size(), args.data())); |
| |
| // Verify. |
| std::string patch; |
| ASSERT_TRUE(android::base::ReadFileToString(patch_file.path, &patch)); |
| |
| // Expect one CHUNK_NORMAL entry, since it's exceeding the 160-byte limit for RAW. |
| size_t num_normal; |
| size_t num_raw; |
| size_t num_deflate; |
| verify_patch_header(patch, &num_normal, &num_raw, &num_deflate); |
| ASSERT_EQ(1U, num_normal); |
| ASSERT_EQ(0U, num_deflate); |
| ASSERT_EQ(0U, num_raw); |
| |
| verify_patched_image(src, patch, tgt); |
| } |
| |
| TEST(ImgpatchTest, image_mode_patch_corruption) { |
| // src: "abcdefgh" + gzipped "xyz" (echo -n "xyz" | gzip -f | hd). |
| const std::vector<char> src_data = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', |
| 'h', '\x1f', '\x8b', '\x08', '\x00', '\xc4', '\x1e', |
| '\x53', '\x58', '\x00', '\x03', '\xab', '\xa8', '\xac', |
| '\x02', '\x00', '\x67', '\xba', '\x8e', '\xeb', '\x03', |
| '\x00', '\x00', '\x00' }; |
| const std::string src(src_data.cbegin(), src_data.cend()); |
| TemporaryFile src_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(src, src_file.path)); |
| |
| // tgt: "abcdefgxyz" + gzipped "xxyyzz". |
| const std::vector<char> tgt_data = { |
| 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'x', 'y', 'z', '\x1f', '\x8b', |
| '\x08', '\x00', '\x62', '\x1f', '\x53', '\x58', '\x00', '\x03', '\xab', '\xa8', '\xa8', '\xac', |
| '\xac', '\xaa', '\x02', '\x00', '\x96', '\x30', '\x06', '\xb7', '\x06', '\x00', '\x00', '\x00' |
| }; |
| const std::string tgt(tgt_data.cbegin(), tgt_data.cend()); |
| TemporaryFile tgt_file; |
| ASSERT_TRUE(android::base::WriteStringToFile(tgt, tgt_file.path)); |
| |
| TemporaryFile patch_file; |
| std::vector<const char*> args = { |
| "imgdiff", src_file.path, tgt_file.path, patch_file.path, |
| }; |
| ASSERT_EQ(0, imgdiff(args.size(), args.data())); |
| |
| // Verify. |
| std::string patch; |
| ASSERT_TRUE(android::base::ReadFileToString(patch_file.path, &patch)); |
| verify_patched_image(src, patch, tgt); |
| |
| // Corrupt the end of the patch and expect the ApplyImagePatch to fail. |
| patch.insert(patch.end() - 10, 10, '0'); |
| ASSERT_EQ(-1, ApplyImagePatch(reinterpret_cast<const unsigned char*>(src.data()), src.size(), |
| reinterpret_cast<const unsigned char*>(patch.data()), patch.size(), |
| [](const unsigned char* /*data*/, size_t len) { return len; })); |
| } |
| |
| static void construct_store_entry(const std::vector<std::tuple<std::string, size_t, char>>& info, |
| ZipWriter* writer) { |
| for (auto& t : info) { |
| // Create t(1) blocks of t(2), and write the data to t(0) |
| ASSERT_EQ(0, writer->StartEntry(std::get<0>(t).c_str(), 0)); |
| const std::string content(std::get<1>(t) * 4096, std::get<2>(t)); |
| ASSERT_EQ(0, writer->WriteBytes(content.data(), content.size())); |
| ASSERT_EQ(0, writer->FinishEntry()); |
| } |
| } |
| |
| static void construct_deflate_entry(const std::vector<std::tuple<std::string, size_t, size_t>>& info, |
| ZipWriter* writer, const std::string& data) { |
| for (auto& t : info) { |
| // t(0): entry_name; t(1): block offset; t(2) length in blocks. |
| ASSERT_EQ(0, writer->StartEntry(std::get<0>(t).c_str(), ZipWriter::kCompress)); |
| ASSERT_EQ(0, writer->WriteBytes(data.data() + std::get<1>(t) * 4096, std::get<2>(t) * 4096)); |
| ASSERT_EQ(0, writer->FinishEntry()); |
| } |
| } |
| |
| // Look for the generated source and patch pieces in the debug_dir and generate the target on |
| // each pair. Concatenate the split target and match against the orignal one. |
| static void GenerateAndCheckSplitTarget(const std::string& debug_dir, size_t count, |
| const std::string& tgt) { |
| std::string patched; |
| for (size_t i = 0; i < count; i++) { |
| std::string split_src_path = android::base::StringPrintf("%s/src-%zu", debug_dir.c_str(), i); |
| std::string split_patch_path = android::base::StringPrintf("%s/patch-%zu", debug_dir.c_str(), i); |
| |
| std::string split_src; |
| std::string split_patch; |
| ASSERT_TRUE(android::base::ReadFileToString(split_src_path, &split_src)); |
| ASSERT_TRUE(android::base::ReadFileToString(split_patch_path, &split_patch)); |
| |
| std::string split_tgt; |
| GenerateTarget(split_src, split_patch, &split_tgt); |
| patched += split_tgt; |
| } |
| |
| // Verify we can get back the original target image. |
| ASSERT_EQ(tgt, patched); |
| } |
| |
| std::vector<ImageChunk> ConstructImageChunks( |
| const std::vector<uint8_t>& content, const std::vector<std::tuple<std::string, size_t>>& info) { |
| std::vector<ImageChunk> chunks; |
| size_t start = 0; |
| for (const auto& t : info) { |
| size_t length = std::get<1>(t); |
| chunks.emplace_back(CHUNK_NORMAL, start, &content, length, std::get<0>(t)); |
| start += length; |
| } |
| |
| return chunks; |
| } |
| |
| TEST(ImgdiffTest, zip_mode_split_image_smoke) { |
| std::vector<uint8_t> content; |
| content.reserve(4096 * 50); |
| uint8_t n = 0; |
| generate_n(back_inserter(content), 4096 * 50, [&n]() { return n++ / 4096; }); |
| |
| ZipModeImage tgt_image(false, 4096 * 10); |
| std::vector<ImageChunk> tgt_chunks = ConstructImageChunks(content, { { "a", 100 }, |
| { "b", 4096 * 2 }, |
| { "c", 4096 * 3 }, |
| { "d", 300 }, |
| { "e-0", 4096 * 10 }, |
| { "e-1", 4096 * 5 }, |
| { "CD", 200 } }); |
| tgt_image.Initialize(std::move(tgt_chunks), |
| std::vector<uint8_t>(content.begin(), content.begin() + 82520)); |
| |
| tgt_image.DumpChunks(); |
| |
| ZipModeImage src_image(true, 4096 * 10); |
| std::vector<ImageChunk> src_chunks = ConstructImageChunks(content, { { "b", 4096 * 3 }, |
| { "c-0", 4096 * 10 }, |
| { "c-1", 4096 * 2 }, |
| { "a", 4096 * 5 }, |
| { "e-0", 4096 * 10 }, |
| { "e-1", 10000 }, |
| { "CD", 5000 } }); |
| src_image.Initialize(std::move(src_chunks), |
| std::vector<uint8_t>(content.begin(), content.begin() + 137880)); |
| |
| std::vector<ZipModeImage> split_tgt_images; |
| std::vector<ZipModeImage> split_src_images; |
| std::vector<SortedRangeSet> split_src_ranges; |
| |
| ZipModeImage::SplitZipModeImageWithLimit(tgt_image, src_image, &split_tgt_images, |
| &split_src_images, &split_src_ranges); |
| |
| // src_piece 1: a 5 blocks, b 3 blocks |
| // src_piece 2: c-0 10 blocks |
| // src_piece 3: d 0 block, e-0 10 blocks |
| // src_piece 4: e-1 2 blocks; CD 2 blocks |
| ASSERT_EQ(split_tgt_images.size(), split_src_images.size()); |
| ASSERT_EQ(static_cast<size_t>(4), split_tgt_images.size()); |
| |
| ASSERT_EQ(static_cast<size_t>(1), split_tgt_images[0].NumOfChunks()); |
| ASSERT_EQ(static_cast<size_t>(12288), split_tgt_images[0][0].DataLengthForPatch()); |
| ASSERT_EQ("4,0,3,15,20", split_src_ranges[0].ToString()); |
| |
| ASSERT_EQ(static_cast<size_t>(1), split_tgt_images[1].NumOfChunks()); |
| ASSERT_EQ(static_cast<size_t>(12288), split_tgt_images[1][0].DataLengthForPatch()); |
| ASSERT_EQ("2,3,13", split_src_ranges[1].ToString()); |
| |
| ASSERT_EQ(static_cast<size_t>(1), split_tgt_images[2].NumOfChunks()); |
| ASSERT_EQ(static_cast<size_t>(40960), split_tgt_images[2][0].DataLengthForPatch()); |
| ASSERT_EQ("2,20,30", split_src_ranges[2].ToString()); |
| |
| ASSERT_EQ(static_cast<size_t>(1), split_tgt_images[3].NumOfChunks()); |
| ASSERT_EQ(static_cast<size_t>(16984), split_tgt_images[3][0].DataLengthForPatch()); |
| ASSERT_EQ("2,30,34", split_src_ranges[3].ToString()); |
| } |
| |
| TEST(ImgdiffTest, zip_mode_store_large_apk) { |
| // Construct src and tgt zip files with limit = 10 blocks. |
| // src tgt |
| // 12 blocks 'd' 3 blocks 'a' |
| // 8 blocks 'c' 3 blocks 'b' |
| // 3 blocks 'b' 8 blocks 'c' (exceeds limit) |
| // 3 blocks 'a' 12 blocks 'd' (exceeds limit) |
| // 3 blocks 'e' |
| TemporaryFile tgt_file; |
| FILE* tgt_file_ptr = fdopen(tgt_file.release(), "wb"); |
| ZipWriter tgt_writer(tgt_file_ptr); |
| construct_store_entry( |
| { { "a", 3, 'a' }, { "b", 3, 'b' }, { "c", 8, 'c' }, { "d", 12, 'd' }, { "e", 3, 'e' } }, |
| &tgt_writer); |
| ASSERT_EQ(0, tgt_writer.Finish()); |
| ASSERT_EQ(0, fclose(tgt_file_ptr)); |
| |
| TemporaryFile src_file; |
| FILE* src_file_ptr = fdopen(src_file.release(), "wb"); |
| ZipWriter src_writer(src_file_ptr); |
| construct_store_entry({ { "d", 12, 'd' }, { "c", 8, 'c' }, { "b", 3, 'b' }, { "a", 3, 'a' } }, |
| &src_writer); |
| ASSERT_EQ(0, src_writer.Finish()); |
| ASSERT_EQ(0, fclose(src_file_ptr)); |
| |
| // Compute patch. |
| TemporaryFile patch_file; |
| TemporaryFile split_info_file; |
| TemporaryDir debug_dir; |
| std::string split_info_arg = android::base::StringPrintf("--split-info=%s", split_info_file.path); |
| std::string debug_dir_arg = android::base::StringPrintf("--debug-dir=%s", debug_dir.path); |
| std::vector<const char*> args = { |
| "imgdiff", "-z", "--block-limit=10", split_info_arg.c_str(), debug_dir_arg.c_str(), |
| src_file.path, tgt_file.path, patch_file.path, |
| }; |
| ASSERT_EQ(0, imgdiff(args.size(), args.data())); |
| |
| std::string tgt; |
| ASSERT_TRUE(android::base::ReadFileToString(tgt_file.path, &tgt)); |
| |
| // Expect 4 pieces of patch. (Roughly 3'a',3'b'; 8'c'; 10'd'; 2'd'3'e') |
| GenerateAndCheckSplitTarget(debug_dir.path, 4, tgt); |
| } |
| |
| TEST(ImgdiffTest, zip_mode_deflate_large_apk) { |
| // Src and tgt zip files are constructed as follows. |
| // src tgt |
| // 22 blocks, "d" 4 blocks, "a" |
| // 5 blocks, "b" 4 blocks, "b" |
| // 3 blocks, "a" 8 blocks, "c" (exceeds limit) |
| // 1 block, "g" 20 blocks, "d" (exceeds limit) |
| // 8 blocks, "c" 2 blocks, "e" |
| // 1 block, "f" 1 block , "f" |
| std::string tgt_path = from_testdata_base("deflate_tgt.zip"); |
| std::string src_path = from_testdata_base("deflate_src.zip"); |
| |
| ZipModeImage src_image(true, 10 * 4096); |
| ZipModeImage tgt_image(false, 10 * 4096); |
| ASSERT_TRUE(src_image.Initialize(src_path)); |
| ASSERT_TRUE(tgt_image.Initialize(tgt_path)); |
| ASSERT_TRUE(ZipModeImage::CheckAndProcessChunks(&tgt_image, &src_image)); |
| |
| src_image.DumpChunks(); |
| tgt_image.DumpChunks(); |
| |
| std::vector<ZipModeImage> split_tgt_images; |
| std::vector<ZipModeImage> split_src_images; |
| std::vector<SortedRangeSet> split_src_ranges; |
| ZipModeImage::SplitZipModeImageWithLimit(tgt_image, src_image, &split_tgt_images, |
| &split_src_images, &split_src_ranges); |
| |
| // Expected split images with limit = 10 blocks. |
| // src_piece 0: a 3 blocks, b 5 blocks |
| // src_piece 1: c 8 blocks |
| // src_piece 2: d-0 10 block |
| // src_piece 3: d-1 10 blocks |
| // src_piece 4: e 1 block, CD |
| ASSERT_EQ(split_tgt_images.size(), split_src_images.size()); |
| ASSERT_EQ(static_cast<size_t>(5), split_tgt_images.size()); |
| |
| ASSERT_EQ(static_cast<size_t>(2), split_src_images[0].NumOfChunks()); |
| ASSERT_EQ("a", split_src_images[0][0].GetEntryName()); |
| ASSERT_EQ("b", split_src_images[0][1].GetEntryName()); |
| |
| ASSERT_EQ(static_cast<size_t>(1), split_src_images[1].NumOfChunks()); |
| ASSERT_EQ("c", split_src_images[1][0].GetEntryName()); |
| |
| ASSERT_EQ(static_cast<size_t>(0), split_src_images[2].NumOfChunks()); |
| ASSERT_EQ(static_cast<size_t>(0), split_src_images[3].NumOfChunks()); |
| ASSERT_EQ(static_cast<size_t>(0), split_src_images[4].NumOfChunks()); |
| |
| // Compute patch. |
| TemporaryFile patch_file; |
| TemporaryFile split_info_file; |
| TemporaryDir debug_dir; |
| ASSERT_TRUE(ZipModeImage::GeneratePatches(split_tgt_images, split_src_images, split_src_ranges, |
| patch_file.path, split_info_file.path, debug_dir.path)); |
| |
| // Verify the content of split info. |
| // Expect 5 pieces of patch. ["a","b"; "c"; "d-0"; "d-1"; "e"] |
| std::string split_info_string; |
| android::base::ReadFileToString(split_info_file.path, &split_info_string); |
| std::vector<std::string> info_list = |
| android::base::Split(android::base::Trim(split_info_string), "\n"); |
| |
| ASSERT_EQ(static_cast<size_t>(7), info_list.size()); |
| ASSERT_EQ("2", android::base::Trim(info_list[0])); |
| ASSERT_EQ("5", android::base::Trim(info_list[1])); |
| |
| std::string tgt; |
| ASSERT_TRUE(android::base::ReadFileToString(tgt_path, &tgt)); |
| ASSERT_EQ(static_cast<size_t>(160385), tgt.size()); |
| std::vector<std::string> tgt_file_ranges = { |
| "36864 2,22,31", "32768 2,31,40", "40960 2,0,11", "40960 2,11,21", "8833 4,21,22,40,41", |
| }; |
| |
| for (size_t i = 0; i < 5; i++) { |
| struct stat st; |
| std::string path = android::base::StringPrintf("%s/patch-%zu", debug_dir.path, i); |
| ASSERT_EQ(0, stat(path.c_str(), &st)); |
| ASSERT_EQ(std::to_string(st.st_size) + " " + tgt_file_ranges[i], |
| android::base::Trim(info_list[i + 2])); |
| } |
| |
| GenerateAndCheckSplitTarget(debug_dir.path, 5, tgt); |
| } |
| |
| TEST(ImgdiffTest, zip_mode_no_match_source) { |
| // Generate 20 blocks of random data. |
| std::string random_data; |
| random_data.reserve(4096 * 20); |
| generate_n(back_inserter(random_data), 4096 * 20, []() { return rand() % 256; }); |
| |
| TemporaryFile tgt_file; |
| FILE* tgt_file_ptr = fdopen(tgt_file.release(), "wb"); |
| ZipWriter tgt_writer(tgt_file_ptr); |
| |
| construct_deflate_entry({ { "a", 0, 4 }, { "b", 5, 5 }, { "c", 11, 5 } }, &tgt_writer, |
| random_data); |
| |
| ASSERT_EQ(0, tgt_writer.Finish()); |
| ASSERT_EQ(0, fclose(tgt_file_ptr)); |
| |
| // We don't have a matching source entry. |
| TemporaryFile src_file; |
| FILE* src_file_ptr = fdopen(src_file.release(), "wb"); |
| ZipWriter src_writer(src_file_ptr); |
| construct_store_entry({ { "d", 1, 'd' } }, &src_writer); |
| ASSERT_EQ(0, src_writer.Finish()); |
| ASSERT_EQ(0, fclose(src_file_ptr)); |
| |
| // Compute patch. |
| TemporaryFile patch_file; |
| TemporaryFile split_info_file; |
| TemporaryDir debug_dir; |
| std::string split_info_arg = android::base::StringPrintf("--split-info=%s", split_info_file.path); |
| std::string debug_dir_arg = android::base::StringPrintf("--debug-dir=%s", debug_dir.path); |
| std::vector<const char*> args = { |
| "imgdiff", "-z", "--block-limit=10", debug_dir_arg.c_str(), split_info_arg.c_str(), |
| src_file.path, tgt_file.path, patch_file.path, |
| }; |
| ASSERT_EQ(0, imgdiff(args.size(), args.data())); |
| |
| std::string tgt; |
| ASSERT_TRUE(android::base::ReadFileToString(tgt_file.path, &tgt)); |
| |
| // Expect 1 pieces of patch due to no matching source entry. |
| GenerateAndCheckSplitTarget(debug_dir.path, 1, tgt); |
| } |
| |
| TEST(ImgdiffTest, zip_mode_large_enough_limit) { |
| // Generate 20 blocks of random data. |
| std::string random_data; |
| random_data.reserve(4096 * 20); |
| generate_n(back_inserter(random_data), 4096 * 20, []() { return rand() % 256; }); |
| |
| TemporaryFile tgt_file; |
| FILE* tgt_file_ptr = fdopen(tgt_file.release(), "wb"); |
| ZipWriter tgt_writer(tgt_file_ptr); |
| |
| construct_deflate_entry({ { "a", 0, 10 }, { "b", 10, 5 } }, &tgt_writer, random_data); |
| |
| ASSERT_EQ(0, tgt_writer.Finish()); |
| ASSERT_EQ(0, fclose(tgt_file_ptr)); |
| |
| // Construct 10 blocks of source. |
| TemporaryFile src_file; |
| FILE* src_file_ptr = fdopen(src_file.release(), "wb"); |
| ZipWriter src_writer(src_file_ptr); |
| construct_deflate_entry({ { "a", 1, 10 } }, &src_writer, random_data); |
| ASSERT_EQ(0, src_writer.Finish()); |
| ASSERT_EQ(0, fclose(src_file_ptr)); |
| |
| // Compute patch with a limit of 20 blocks. |
| TemporaryFile patch_file; |
| TemporaryFile split_info_file; |
| TemporaryDir debug_dir; |
| std::string split_info_arg = android::base::StringPrintf("--split-info=%s", split_info_file.path); |
| std::string debug_dir_arg = android::base::StringPrintf("--debug-dir=%s", debug_dir.path); |
| std::vector<const char*> args = { |
| "imgdiff", "-z", "--block-limit=20", split_info_arg.c_str(), debug_dir_arg.c_str(), |
| src_file.path, tgt_file.path, patch_file.path, |
| }; |
| ASSERT_EQ(0, imgdiff(args.size(), args.data())); |
| |
| std::string tgt; |
| ASSERT_TRUE(android::base::ReadFileToString(tgt_file.path, &tgt)); |
| |
| // Expect 1 piece of patch since limit is larger than the zip file size. |
| GenerateAndCheckSplitTarget(debug_dir.path, 1, tgt); |
| } |