tests/component/applypatch_modes_test.cpp - android_bootable_recovery - Gitiles

 /*
  * 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 agree 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 <stdlib.h>

 #include <string>
 #include <vector>

 #include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/stringprintf.h>
 #include <android-base/test_utils.h>
 #include <bsdiff/bsdiff.h>
 #include <gtest/gtest.h>
 #include <openssl/sha.h>
 #include <zlib.h>

 #include "applypatch/applypatch_modes.h"
 #include "common/test_constants.h"
 #include "otautil/paths.h"
 #include "otautil/print_sha1.h"

 using namespace std::string_literals;

 // TODO(b/67849209) Remove after debug the flakiness.
 static void DecompressAndDumpRecoveryImage(const std::string& image_path) {
   // Expected recovery_image structure
   // chunk normal:  45066 bytes
   // chunk deflate: 479442 bytes
   // chunk normal:  5199 bytes
   std::string recovery_content;
   ASSERT_TRUE(android::base::ReadFileToString(image_path, &recovery_content));
   ASSERT_GT(recovery_content.size(), 45066 + 5199);

   z_stream strm = {};
   strm.avail_in = recovery_content.size() - 45066 - 5199;
   strm.next_in =
       const_cast<uint8_t*>(reinterpret_cast<const uint8_t*>(recovery_content.data())) + 45066;

   ASSERT_EQ(Z_OK, inflateInit2(&strm, -15));

   constexpr unsigned int BUFFER_SIZE = 32768;
   std::vector<uint8_t> uncompressed_data(BUFFER_SIZE);
   size_t uncompressed_length = 0;
   SHA_CTX ctx;
   SHA1_Init(&ctx);
   int ret;
   do {
     strm.avail_out = BUFFER_SIZE;
     strm.next_out = uncompressed_data.data();

     ret = inflate(&strm, Z_NO_FLUSH);
     ASSERT_GE(ret, 0);

     SHA1_Update(&ctx, uncompressed_data.data(), BUFFER_SIZE - strm.avail_out);
     uncompressed_length += BUFFER_SIZE - strm.avail_out;
   } while (ret != Z_STREAM_END);
   inflateEnd(&strm);

   uint8_t digest[SHA_DIGEST_LENGTH];
   SHA1_Final(digest, &ctx);
   GTEST_LOG_(INFO) << "uncompressed length " << uncompressed_length
                    << " sha1: " << short_sha1(digest);
 }

 static void sha1sum(const std::string& fname, std::string* sha1, size_t* fsize = nullptr) {
   ASSERT_TRUE(sha1 != nullptr);

   std::string data;
   ASSERT_TRUE(android::base::ReadFileToString(fname, &data));

   if (fsize != nullptr) {
     *fsize = data.size();
   }

   uint8_t digest[SHA_DIGEST_LENGTH];
   SHA1(reinterpret_cast<const uint8_t*>(data.c_str()), data.size(), digest);
   *sha1 = print_sha1(digest);
 }

 static void test_logger(android::base::LogId /* id */, android::base::LogSeverity severity,
                         const char* /* tag */, const char* /* file */, unsigned int /* line */,
                         const char* message) {
   if (severity >= android::base::GetMinimumLogSeverity()) {
     fprintf(stdout, "%s\n", message);
   }
 }

 class ApplyPatchModesTest : public ::testing::Test {
  protected:
   void SetUp() override {
     Paths::Get().set_cache_temp_source(cache_source.path);
     android::base::InitLogging(nullptr, &test_logger);
     android::base::SetMinimumLogSeverity(android::base::LogSeverity::DEBUG);
   }

   TemporaryFile cache_source;
 };

 TEST_F(ApplyPatchModesTest, InvalidArgs) {
   // At least two args (including the filename).
   ASSERT_EQ(2, applypatch_modes(1, (const char* []){ "applypatch" }));

   // Unrecognized args.
   ASSERT_EQ(2, applypatch_modes(2, (const char* []){ "applypatch", "-x" }));
 }

 TEST_F(ApplyPatchModesTest, PatchModeEmmcTarget) {
   std::string boot_img = from_testdata_base("boot.img");
   size_t boot_img_size;
   std::string boot_img_sha1;
   sha1sum(boot_img, &boot_img_sha1, &boot_img_size);

   std::string recovery_img = from_testdata_base("recovery.img");
   size_t recovery_img_size;
   std::string recovery_img_sha1;
   sha1sum(recovery_img, &recovery_img_sha1, &recovery_img_size);
   std::string recovery_img_size_arg = std::to_string(recovery_img_size);

   std::string bonus_file = from_testdata_base("bonus.file");

   // applypatch -b <bonus-file> <src-file> <tgt-file> <tgt-sha1> <tgt-size> <src-sha1>:<patch>
   std::string src_file_arg =
       "EMMC:" + boot_img + ":" + std::to_string(boot_img_size) + ":" + boot_img_sha1;
   TemporaryFile tgt_file;
   std::string tgt_file_arg = "EMMC:"s + tgt_file.path;
   std::string patch_arg = boot_img_sha1 + ":" + from_testdata_base("recovery-from-boot.p");
   std::vector<const char*> args = { "applypatch",
                                     "-b",
                                     bonus_file.c_str(),
                                     src_file_arg.c_str(),
                                     tgt_file_arg.c_str(),
                                     recovery_img_sha1.c_str(),
                                     recovery_img_size_arg.c_str(),
                                     patch_arg.c_str() };
   ASSERT_EQ(0, applypatch_modes(args.size(), args.data()));
 }

 // Tests patching the EMMC target without a separate bonus file (i.e. recovery-from-boot patch has
 // everything).
 TEST_F(ApplyPatchModesTest, PatchModeEmmcTargetWithoutBonusFile) {
   std::string boot_img = from_testdata_base("boot.img");
   size_t boot_img_size;
   std::string boot_img_sha1;
   sha1sum(boot_img, &boot_img_sha1, &boot_img_size);

   std::string recovery_img = from_testdata_base("recovery.img");
   size_t recovery_img_size;
   std::string recovery_img_sha1;
   sha1sum(recovery_img, &recovery_img_sha1, &recovery_img_size);
   std::string recovery_img_size_arg = std::to_string(recovery_img_size);

   // applypatch <src-file> <tgt-file> <tgt-sha1> <tgt-size> <src-sha1>:<patch>
   std::string src_file_arg =
       "EMMC:" + boot_img + ":" + std::to_string(boot_img_size) + ":" + boot_img_sha1;
   TemporaryFile tgt_file;
   std::string tgt_file_arg = "EMMC:"s + tgt_file.path;
   std::string patch_arg =
       boot_img_sha1 + ":" + from_testdata_base("recovery-from-boot-with-bonus.p");
   std::vector<const char*> args = { "applypatch",
                                     src_file_arg.c_str(),
                                     tgt_file_arg.c_str(),
                                     recovery_img_sha1.c_str(),
                                     recovery_img_size_arg.c_str(),
                                     patch_arg.c_str() };

   if (applypatch_modes(args.size(), args.data()) != 0) {
     DecompressAndDumpRecoveryImage(tgt_file.path);
     FAIL();
   }
 }

 TEST_F(ApplyPatchModesTest, PatchModeEmmcTargetWithMultiplePatches) {
   std::string boot_img = from_testdata_base("boot.img");
   size_t boot_img_size;
   std::string boot_img_sha1;
   sha1sum(boot_img, &boot_img_sha1, &boot_img_size);

   std::string recovery_img = from_testdata_base("recovery.img");
   size_t recovery_img_size;
   std::string recovery_img_sha1;
   sha1sum(recovery_img, &recovery_img_sha1, &recovery_img_size);
   std::string recovery_img_size_arg = std::to_string(recovery_img_size);

   std::string bonus_file = from_testdata_base("bonus.file");

   // applypatch -b <bonus-file> <src-file> <tgt-file> <tgt-sha1> <tgt-size> \
   //            <src-sha1-fake1>:<patch1> <src-sha1>:<patch2> <src-sha1-fake2>:<patch3>
   std::string src_file_arg =
       "EMMC:" + boot_img + ":" + std::to_string(boot_img_size) + ":" + boot_img_sha1;
   TemporaryFile tgt_file;
   std::string tgt_file_arg = "EMMC:"s + tgt_file.path;
   std::string bad_sha1_a = android::base::StringPrintf("%040x", rand());
   std::string bad_sha1_b = android::base::StringPrintf("%040x", rand());
   std::string patch1 = bad_sha1_a + ":" + from_testdata_base("recovery-from-boot.p");
   std::string patch2 = boot_img_sha1 + ":" + from_testdata_base("recovery-from-boot.p");
   std::string patch3 = bad_sha1_b + ":" + from_testdata_base("recovery-from-boot.p");
   std::vector<const char*> args = { "applypatch",
                                     "-b",
                                     bonus_file.c_str(),
                                     src_file_arg.c_str(),
                                     tgt_file_arg.c_str(),
                                     recovery_img_sha1.c_str(),
                                     recovery_img_size_arg.c_str(),
                                     patch1.c_str(),
                                     patch2.c_str(),
                                     patch3.c_str() };
   // TODO(b/67849209): Remove after addressing the flakiness.
   printf("Calling applypatch_modes with the following args:\n");
   for (const auto& arg : args) {
     printf("  %s\n", arg);
   }

   if (applypatch_modes(args.size(), args.data()) != 0) {
     DecompressAndDumpRecoveryImage(tgt_file.path);
     FAIL();
   }
 }

 // Ensures that applypatch works with a bsdiff based recovery-from-boot.p.
 TEST_F(ApplyPatchModesTest, PatchModeEmmcTargetWithBsdiffPatch) {
   std::string boot_img_file = from_testdata_base("boot.img");
   std::string boot_img_sha1;
   size_t boot_img_size;
   sha1sum(boot_img_file, &boot_img_sha1, &boot_img_size);

   std::string recovery_img_file = from_testdata_base("recovery.img");
   std::string recovery_img_sha1;
   size_t recovery_img_size;
   sha1sum(recovery_img_file, &recovery_img_sha1, &recovery_img_size);

   // Generate the bsdiff patch of recovery-from-boot.p.
   std::string src_content;
   ASSERT_TRUE(android::base::ReadFileToString(boot_img_file, &src_content));

   std::string tgt_content;
   ASSERT_TRUE(android::base::ReadFileToString(recovery_img_file, &tgt_content));

   TemporaryFile patch_file;
   ASSERT_EQ(0,
             bsdiff::bsdiff(reinterpret_cast<const uint8_t*>(src_content.data()), src_content.size(),
                            reinterpret_cast<const uint8_t*>(tgt_content.data()), tgt_content.size(),
                            patch_file.path, nullptr));

   // applypatch <src-file> <tgt-file> <tgt-sha1> <tgt-size> <src-sha1>:<patch>
   std::string src_file_arg =
       "EMMC:" + boot_img_file + ":" + std::to_string(boot_img_size) + ":" + boot_img_sha1;
   TemporaryFile tgt_file;
   std::string tgt_file_arg = "EMMC:"s + tgt_file.path;
   std::string recovery_img_size_arg = std::to_string(recovery_img_size);
   std::string patch_arg = boot_img_sha1 + ":" + patch_file.path;
   std::vector<const char*> args = { "applypatch",
                                     src_file_arg.c_str(),
                                     tgt_file_arg.c_str(),
                                     recovery_img_sha1.c_str(),
                                     recovery_img_size_arg.c_str(),
                                     patch_arg.c_str() };
   ASSERT_EQ(0, applypatch_modes(args.size(), args.data()));

   // Double check the patched recovery image.
   std::string tgt_file_sha1;
   size_t tgt_file_size;
   sha1sum(tgt_file.path, &tgt_file_sha1, &tgt_file_size);
   ASSERT_EQ(recovery_img_size, tgt_file_size);
   ASSERT_EQ(recovery_img_sha1, tgt_file_sha1);
 }

 TEST_F(ApplyPatchModesTest, PatchModeInvalidArgs) {
   // Invalid bonus file.
   ASSERT_NE(0, applypatch_modes(3, (const char* []){ "applypatch", "-b", "/doesntexist" }));

   std::string bonus_file = from_testdata_base("bonus.file");
   // With bonus file, but missing args.
   ASSERT_EQ(2, applypatch_modes(3, (const char* []){ "applypatch", "-b", bonus_file.c_str() }));

   std::string boot_img = from_testdata_base("boot.img");
   size_t boot_img_size;
   std::string boot_img_sha1;
   sha1sum(boot_img, &boot_img_sha1, &boot_img_size);

   std::string recovery_img = from_testdata_base("recovery.img");
   size_t size;
   std::string recovery_img_sha1;
   sha1sum(recovery_img, &recovery_img_sha1, &size);
   std::string recovery_img_size = std::to_string(size);

   // Bonus file is not supported in flash mode.
   // applypatch -b <bonus-file> <src-file> <tgt-file> <tgt-sha1> <tgt-size>
   TemporaryFile tmp4;
   std::vector<const char*> args4 = {
     "applypatch",
     "-b",
     bonus_file.c_str(),
     boot_img.c_str(),
     tmp4.path,
     recovery_img_sha1.c_str(),
     recovery_img_size.c_str(),
   };
   ASSERT_NE(0, applypatch_modes(args4.size(), args4.data()));

   // Failed to parse patch args.
   TemporaryFile tmp5;
   std::string bad_arg1 =
       "invalid-sha1:filename" + from_testdata_base("recovery-from-boot-with-bonus.p");
   std::vector<const char*> args5 = {
     "applypatch",
     boot_img.c_str(),
     tmp5.path,
     recovery_img_sha1.c_str(),
     recovery_img_size.c_str(),
     bad_arg1.c_str(),
   };
   ASSERT_NE(0, applypatch_modes(args5.size(), args5.data()));

   // Target size cannot be zero.
   TemporaryFile tmp6;
   std::string patch = boot_img_sha1 + ":" + from_testdata_base("recovery-from-boot-with-bonus.p");
   std::vector<const char*> args6 = {
     "applypatch",  boot_img.c_str(), tmp6.path, recovery_img_sha1.c_str(),
     "0",  // target size
     patch.c_str(),
   };
   ASSERT_NE(0, applypatch_modes(args6.size(), args6.data()));
 }

 TEST_F(ApplyPatchModesTest, CheckModeInvalidArgs) {
   // Insufficient args.
   ASSERT_EQ(2, applypatch_modes(2, (const char* []){ "applypatch", "-c" }));
 }

 TEST_F(ApplyPatchModesTest, ShowLicenses) {
   ASSERT_EQ(0, applypatch_modes(2, (const char* []){ "applypatch", "-l" }));
 }
	/*
	* 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 agree 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 <stdlib.h>

	#include <string>
	#include <vector>

	#include <android-base/file.h>
	#include <android-base/logging.h>
	#include <android-base/stringprintf.h>
	#include <android-base/test_utils.h>
	#include <bsdiff/bsdiff.h>
	#include <gtest/gtest.h>
	#include <openssl/sha.h>
	#include <zlib.h>

	#include "applypatch/applypatch_modes.h"
	#include "common/test_constants.h"
	#include "otautil/paths.h"
	#include "otautil/print_sha1.h"

	using namespace std::string_literals;

	// TODO(b/67849209) Remove after debug the flakiness.
	static void DecompressAndDumpRecoveryImage(const std::string& image_path) {
	// Expected recovery_image structure
	// chunk normal: 45066 bytes
	// chunk deflate: 479442 bytes
	// chunk normal: 5199 bytes
	std::string recovery_content;
	ASSERT_TRUE(android::base::ReadFileToString(image_path, &recovery_content));
	ASSERT_GT(recovery_content.size(), 45066 + 5199);

	z_stream strm = {};
	strm.avail_in = recovery_content.size() - 45066 - 5199;
	strm.next_in =
	const_cast<uint8_t>(reinterpret_cast<const uint8_t>(recovery_content.data())) + 45066;

	ASSERT_EQ(Z_OK, inflateInit2(&strm, -15));

	constexpr unsigned int BUFFER_SIZE = 32768;
	std::vector<uint8_t> uncompressed_data(BUFFER_SIZE);
	size_t uncompressed_length = 0;
	SHA_CTX ctx;
	SHA1_Init(&ctx);
	int ret;
	do {
	strm.avail_out = BUFFER_SIZE;
	strm.next_out = uncompressed_data.data();

	ret = inflate(&strm, Z_NO_FLUSH);
	ASSERT_GE(ret, 0);

	SHA1_Update(&ctx, uncompressed_data.data(), BUFFER_SIZE - strm.avail_out);
	uncompressed_length += BUFFER_SIZE - strm.avail_out;
	} while (ret != Z_STREAM_END);
	inflateEnd(&strm);

	uint8_t digest[SHA_DIGEST_LENGTH];
	SHA1_Final(digest, &ctx);
	GTEST_LOG_(INFO) << "uncompressed length " << uncompressed_length
	<< " sha1: " << short_sha1(digest);
	}

	static void sha1sum(const std::string& fname, std::string* sha1, size_t* fsize = nullptr) {
	ASSERT_TRUE(sha1 != nullptr);

	std::string data;
	ASSERT_TRUE(android::base::ReadFileToString(fname, &data));

	if (fsize != nullptr) {
	*fsize = data.size();
	}

	uint8_t digest[SHA_DIGEST_LENGTH];
	SHA1(reinterpret_cast<const uint8_t*>(data.c_str()), data.size(), digest);
	*sha1 = print_sha1(digest);
	}

	static void test_logger(android::base::LogId /* id */, android::base::LogSeverity severity,
	const char* /* tag /, const char /* file /, unsigned int / line */,
	const char* message) {
	if (severity >= android::base::GetMinimumLogSeverity()) {
	fprintf(stdout, "%s\n", message);
	}
	}

	class ApplyPatchModesTest : public ::testing::Test {
	protected:
	void SetUp() override {
	Paths::Get().set_cache_temp_source(cache_source.path);
	android::base::InitLogging(nullptr, &test_logger);
	android::base::SetMinimumLogSeverity(android::base::LogSeverity::DEBUG);
	}

	TemporaryFile cache_source;
	};

	TEST_F(ApplyPatchModesTest, InvalidArgs) {
	// At least two args (including the filename).
	ASSERT_EQ(2, applypatch_modes(1, (const char* []){ "applypatch" }));

	// Unrecognized args.
	ASSERT_EQ(2, applypatch_modes(2, (const char* []){ "applypatch", "-x" }));
	}

	TEST_F(ApplyPatchModesTest, PatchModeEmmcTarget) {
	std::string boot_img = from_testdata_base("boot.img");
	size_t boot_img_size;
	std::string boot_img_sha1;
	sha1sum(boot_img, &boot_img_sha1, &boot_img_size);

	std::string recovery_img = from_testdata_base("recovery.img");
	size_t recovery_img_size;
	std::string recovery_img_sha1;
	sha1sum(recovery_img, &recovery_img_sha1, &recovery_img_size);
	std::string recovery_img_size_arg = std::to_string(recovery_img_size);

	std::string bonus_file = from_testdata_base("bonus.file");

	// applypatch -b <bonus-file> <src-file> <tgt-file> <tgt-sha1> <tgt-size> <src-sha1>:<patch>
	std::string src_file_arg =
	"EMMC:" + boot_img + ":" + std::to_string(boot_img_size) + ":" + boot_img_sha1;
	TemporaryFile tgt_file;
	std::string tgt_file_arg = "EMMC:"s + tgt_file.path;
	std::string patch_arg = boot_img_sha1 + ":" + from_testdata_base("recovery-from-boot.p");
	std::vector<const char*> args = { "applypatch",
	"-b",
	bonus_file.c_str(),
	src_file_arg.c_str(),
	tgt_file_arg.c_str(),
	recovery_img_sha1.c_str(),
	recovery_img_size_arg.c_str(),
	patch_arg.c_str() };
	ASSERT_EQ(0, applypatch_modes(args.size(), args.data()));
	}

	// Tests patching the EMMC target without a separate bonus file (i.e. recovery-from-boot patch has
	// everything).
	TEST_F(ApplyPatchModesTest, PatchModeEmmcTargetWithoutBonusFile) {
	std::string boot_img = from_testdata_base("boot.img");
	size_t boot_img_size;
	std::string boot_img_sha1;
	sha1sum(boot_img, &boot_img_sha1, &boot_img_size);

	std::string recovery_img = from_testdata_base("recovery.img");
	size_t recovery_img_size;
	std::string recovery_img_sha1;
	sha1sum(recovery_img, &recovery_img_sha1, &recovery_img_size);
	std::string recovery_img_size_arg = std::to_string(recovery_img_size);

	// applypatch <src-file> <tgt-file> <tgt-sha1> <tgt-size> <src-sha1>:<patch>
	std::string src_file_arg =
	"EMMC:" + boot_img + ":" + std::to_string(boot_img_size) + ":" + boot_img_sha1;
	TemporaryFile tgt_file;
	std::string tgt_file_arg = "EMMC:"s + tgt_file.path;
	std::string patch_arg =
	boot_img_sha1 + ":" + from_testdata_base("recovery-from-boot-with-bonus.p");
	std::vector<const char*> args = { "applypatch",
	src_file_arg.c_str(),
	tgt_file_arg.c_str(),
	recovery_img_sha1.c_str(),
	recovery_img_size_arg.c_str(),
	patch_arg.c_str() };

	if (applypatch_modes(args.size(), args.data()) != 0) {
	DecompressAndDumpRecoveryImage(tgt_file.path);
	FAIL();
	}
	}

	TEST_F(ApplyPatchModesTest, PatchModeEmmcTargetWithMultiplePatches) {
	std::string boot_img = from_testdata_base("boot.img");
	size_t boot_img_size;
	std::string boot_img_sha1;
	sha1sum(boot_img, &boot_img_sha1, &boot_img_size);

	std::string recovery_img = from_testdata_base("recovery.img");
	size_t recovery_img_size;
	std::string recovery_img_sha1;
	sha1sum(recovery_img, &recovery_img_sha1, &recovery_img_size);
	std::string recovery_img_size_arg = std::to_string(recovery_img_size);

	std::string bonus_file = from_testdata_base("bonus.file");

	// applypatch -b <bonus-file> <src-file> <tgt-file> <tgt-sha1> <tgt-size> \
	// <src-sha1-fake1>:<patch1> <src-sha1>:<patch2> <src-sha1-fake2>:<patch3>
	std::string src_file_arg =
	"EMMC:" + boot_img + ":" + std::to_string(boot_img_size) + ":" + boot_img_sha1;
	TemporaryFile tgt_file;
	std::string tgt_file_arg = "EMMC:"s + tgt_file.path;
	std::string bad_sha1_a = android::base::StringPrintf("%040x", rand());
	std::string bad_sha1_b = android::base::StringPrintf("%040x", rand());
	std::string patch1 = bad_sha1_a + ":" + from_testdata_base("recovery-from-boot.p");
	std::string patch2 = boot_img_sha1 + ":" + from_testdata_base("recovery-from-boot.p");
	std::string patch3 = bad_sha1_b + ":" + from_testdata_base("recovery-from-boot.p");
	std::vector<const char*> args = { "applypatch",
	"-b",
	bonus_file.c_str(),
	src_file_arg.c_str(),
	tgt_file_arg.c_str(),
	recovery_img_sha1.c_str(),
	recovery_img_size_arg.c_str(),
	patch1.c_str(),
	patch2.c_str(),
	patch3.c_str() };
	// TODO(b/67849209): Remove after addressing the flakiness.
	printf("Calling applypatch_modes with the following args:\n");
	for (const auto& arg : args) {
	printf(" %s\n", arg);
	}

	if (applypatch_modes(args.size(), args.data()) != 0) {
	DecompressAndDumpRecoveryImage(tgt_file.path);
	FAIL();
	}
	}

	// Ensures that applypatch works with a bsdiff based recovery-from-boot.p.
	TEST_F(ApplyPatchModesTest, PatchModeEmmcTargetWithBsdiffPatch) {
	std::string boot_img_file = from_testdata_base("boot.img");
	std::string boot_img_sha1;
	size_t boot_img_size;
	sha1sum(boot_img_file, &boot_img_sha1, &boot_img_size);

	std::string recovery_img_file = from_testdata_base("recovery.img");
	std::string recovery_img_sha1;
	size_t recovery_img_size;
	sha1sum(recovery_img_file, &recovery_img_sha1, &recovery_img_size);

	// Generate the bsdiff patch of recovery-from-boot.p.
	std::string src_content;
	ASSERT_TRUE(android::base::ReadFileToString(boot_img_file, &src_content));

	std::string tgt_content;
	ASSERT_TRUE(android::base::ReadFileToString(recovery_img_file, &tgt_content));

	TemporaryFile patch_file;
	ASSERT_EQ(0,
	bsdiff::bsdiff(reinterpret_cast<const uint8_t*>(src_content.data()), src_content.size(),
	reinterpret_cast<const uint8_t*>(tgt_content.data()), tgt_content.size(),
	patch_file.path, nullptr));

	// applypatch <src-file> <tgt-file> <tgt-sha1> <tgt-size> <src-sha1>:<patch>
	std::string src_file_arg =
	"EMMC:" + boot_img_file + ":" + std::to_string(boot_img_size) + ":" + boot_img_sha1;
	TemporaryFile tgt_file;
	std::string tgt_file_arg = "EMMC:"s + tgt_file.path;
	std::string recovery_img_size_arg = std::to_string(recovery_img_size);
	std::string patch_arg = boot_img_sha1 + ":" + patch_file.path;
	std::vector<const char*> args = { "applypatch",
	src_file_arg.c_str(),
	tgt_file_arg.c_str(),
	recovery_img_sha1.c_str(),
	recovery_img_size_arg.c_str(),
	patch_arg.c_str() };
	ASSERT_EQ(0, applypatch_modes(args.size(), args.data()));

	// Double check the patched recovery image.
	std::string tgt_file_sha1;
	size_t tgt_file_size;
	sha1sum(tgt_file.path, &tgt_file_sha1, &tgt_file_size);
	ASSERT_EQ(recovery_img_size, tgt_file_size);
	ASSERT_EQ(recovery_img_sha1, tgt_file_sha1);
	}

	TEST_F(ApplyPatchModesTest, PatchModeInvalidArgs) {
	// Invalid bonus file.
	ASSERT_NE(0, applypatch_modes(3, (const char* []){ "applypatch", "-b", "/doesntexist" }));

	std::string bonus_file = from_testdata_base("bonus.file");
	// With bonus file, but missing args.
	ASSERT_EQ(2, applypatch_modes(3, (const char* []){ "applypatch", "-b", bonus_file.c_str() }));

	std::string boot_img = from_testdata_base("boot.img");
	size_t boot_img_size;
	std::string boot_img_sha1;
	sha1sum(boot_img, &boot_img_sha1, &boot_img_size);

	std::string recovery_img = from_testdata_base("recovery.img");
	size_t size;
	std::string recovery_img_sha1;
	sha1sum(recovery_img, &recovery_img_sha1, &size);
	std::string recovery_img_size = std::to_string(size);

	// Bonus file is not supported in flash mode.
	// applypatch -b <bonus-file> <src-file> <tgt-file> <tgt-sha1> <tgt-size>
	TemporaryFile tmp4;
	std::vector<const char*> args4 = {
	"applypatch",
	"-b",
	bonus_file.c_str(),
	boot_img.c_str(),
	tmp4.path,
	recovery_img_sha1.c_str(),
	recovery_img_size.c_str(),
	};
	ASSERT_NE(0, applypatch_modes(args4.size(), args4.data()));

	// Failed to parse patch args.
	TemporaryFile tmp5;
	std::string bad_arg1 =
	"invalid-sha1:filename" + from_testdata_base("recovery-from-boot-with-bonus.p");
	std::vector<const char*> args5 = {
	"applypatch",
	boot_img.c_str(),
	tmp5.path,
	recovery_img_sha1.c_str(),
	recovery_img_size.c_str(),
	bad_arg1.c_str(),
	};
	ASSERT_NE(0, applypatch_modes(args5.size(), args5.data()));

	// Target size cannot be zero.
	TemporaryFile tmp6;
	std::string patch = boot_img_sha1 + ":" + from_testdata_base("recovery-from-boot-with-bonus.p");
	std::vector<const char*> args6 = {
	"applypatch", boot_img.c_str(), tmp6.path, recovery_img_sha1.c_str(),
	"0", // target size
	patch.c_str(),
	};
	ASSERT_NE(0, applypatch_modes(args6.size(), args6.data()));
	}

	TEST_F(ApplyPatchModesTest, CheckModeInvalidArgs) {
	// Insufficient args.
	ASSERT_EQ(2, applypatch_modes(2, (const char* []){ "applypatch", "-c" }));
	}

	TEST_F(ApplyPatchModesTest, ShowLicenses) {
	ASSERT_EQ(0, applypatch_modes(2, (const char* []){ "applypatch", "-l" }));
	}