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-rw-r--r--tests/component/imgdiff_test.cpp448
1 files changed, 448 insertions, 0 deletions
diff --git a/tests/component/imgdiff_test.cpp b/tests/component/imgdiff_test.cpp
new file mode 100644
index 000000000..3711859de
--- /dev/null
+++ b/tests/component/imgdiff_test.cpp
@@ -0,0 +1,448 @@
+/*
+ * 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 <string>
+#include <vector>
+
+#include <android-base/file.h>
+#include <android-base/test_utils.h>
+#include <applypatch/imgdiff.h>
+#include <applypatch/imgpatch.h>
+#include <gtest/gtest.h>
+#include <ziparchive/zip_writer.h>
+
+#include "applypatch/utils.h"
+
+static ssize_t MemorySink(const unsigned char* data, ssize_t len, void* token) {
+ std::string* s = static_cast<std::string*>(token);
+ s->append(reinterpret_cast<const char*>(data), len);
+ return len;
+}
+
+// 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 = Read4(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 = Read4(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 = Read4(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;
+}
+
+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);
+
+ std::string patched;
+ ASSERT_EQ(0, ApplyImagePatch(reinterpret_cast<const unsigned char*>(src.data()), src.size(),
+ reinterpret_cast<const unsigned char*>(patch.data()), patch.size(),
+ MemorySink, &patched));
+ ASSERT_EQ(tgt, patched);
+}
+
+TEST(ImgdiffTest, zip_mode_smoke_store) {
+ // Construct src and tgt zip files.
+ TemporaryFile src_file;
+ FILE* src_file_ptr = fdopen(src_file.fd, "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.fd, "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);
+
+ std::string patched;
+ ASSERT_EQ(0, ApplyImagePatch(reinterpret_cast<const unsigned char*>(src.data()), src.size(),
+ reinterpret_cast<const unsigned char*>(patch.data()), patch.size(),
+ MemorySink, &patched));
+ ASSERT_EQ(tgt, patched);
+}
+
+TEST(ImgdiffTest, zip_mode_smoke_compressed) {
+ // Construct src and tgt zip files.
+ TemporaryFile src_file;
+ FILE* src_file_ptr = fdopen(src_file.fd, "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.fd, "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);
+
+ std::string patched;
+ ASSERT_EQ(0, ApplyImagePatch(reinterpret_cast<const unsigned char*>(src.data()), src.size(),
+ reinterpret_cast<const unsigned char*>(patch.data()), patch.size(),
+ MemorySink, &patched));
+ ASSERT_EQ(tgt, patched);
+}
+
+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);
+
+ std::string patched;
+ ASSERT_EQ(0, ApplyImagePatch(reinterpret_cast<const unsigned char*>(src.data()), src.size(),
+ reinterpret_cast<const unsigned char*>(patch.data()), patch.size(),
+ MemorySink, &patched));
+ ASSERT_EQ(tgt, patched);
+}
+
+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);
+
+ std::string patched;
+ ASSERT_EQ(0, ApplyImagePatch(reinterpret_cast<const unsigned char*>(src.data()), src.size(),
+ reinterpret_cast<const unsigned char*>(patch.data()), patch.size(),
+ MemorySink, &patched));
+ ASSERT_EQ(tgt, patched);
+}
+
+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);
+
+ std::string patched;
+ ASSERT_EQ(0, ApplyImagePatch(reinterpret_cast<const unsigned char*>(src.data()), src.size(),
+ reinterpret_cast<const unsigned char*>(patch.data()), patch.size(),
+ MemorySink, &patched));
+ ASSERT_EQ(tgt, patched);
+}
+
+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);
+
+ std::string patched;
+ ASSERT_EQ(0, ApplyImagePatch(reinterpret_cast<const unsigned char*>(src.data()), src.size(),
+ reinterpret_cast<const unsigned char*>(patch.data()), patch.size(),
+ MemorySink, &patched));
+ ASSERT_EQ(tgt, patched);
+}