1 files changed, 347 insertions, 0 deletions

diff --git a/tests/component/applypatch_modes_test.cpp b/tests/component/applypatch_modes_test.cpp
new file mode 100644
index 000000000..b0a52b1e8
--- /dev/null
+++ b/tests/component/applypatch_modes_test.cpp
@@ -0,0 +1,347 @@
+/*
+ * 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" }));
+}