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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/browser_watcher/postmortem_minidump_writer.h"
#include <windows.h> // NOLINT
#include <dbghelp.h>
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/files/scoped_file.h"
#include "base/files/scoped_temp_dir.h"
#include "base/win/scoped_handle.h"
#include "components/browser_watcher/stability_report.pb.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/crashpad/crashpad/snapshot/minidump/process_snapshot_minidump.h"
#include "third_party/crashpad/crashpad/util/file/file_reader.h"
#include "third_party/crashpad/crashpad/util/misc/uuid.h"
namespace browser_watcher {
using crashpad::UUID;
const char kProductName[] = "some-product";
const char kExpectedProductName[] = "some-product_Postmortem";
const char kVersion[] = "51.0.2704.106";
const char kChannel[] = "some-channel";
const char kPlatform[] = "some-platform";
class WritePostmortemDumpTest : public testing::Test {
public:
void SetUp() override {
testing::Test::SetUp();
expected_client_id_.InitializeWithNew();
expected_report_id_.InitializeWithNew();
// Create a stability report.
// TODO(manzagop): flesh out the report once proto is more detailed.
ProcessState* process_state = expected_report_.add_process_states();
CodeModule* module = process_state->add_modules();
module->set_base_address(1024);
module->set_code_file("some_code_file.dll");
// Write the minidump.
ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
minidump_path_ = temp_dir_.GetPath().AppendASCII("minidump.dmp");
}
bool WriteDump() {
base::win::ScopedHandle file_handle(::CreateFile(
minidump_path_.value().c_str(), GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE, nullptr, CREATE_NEW,
FILE_ATTRIBUTE_NORMAL, nullptr));
if (!file_handle.IsValid())
return false;
MinidumpInfo minidump_info;
minidump_info.client_id = expected_client_id_;
minidump_info.report_id = expected_report_id_;
minidump_info.product_name = kProductName;
minidump_info.version_number = kVersion;
minidump_info.channel_name = kChannel;
minidump_info.platform = kPlatform;
return WritePostmortemDump(file_handle.Get(), expected_report_,
minidump_info);
}
const base::FilePath& minidump_path() { return minidump_path_; }
const UUID& expected_client_id() { return expected_client_id_; }
const UUID& expected_report_id() { return expected_report_id_; }
const StabilityReport& expected_report() { return expected_report_; }
private:
base::ScopedTempDir temp_dir_;
base::FilePath minidump_path_;
UUID expected_client_id_;
UUID expected_report_id_;
StabilityReport expected_report_;
};
TEST_F(WritePostmortemDumpTest, ValidateStabilityReportTest) {
ASSERT_TRUE(WriteDump());
// Read back the minidump to extract the proto.
// TODO(manzagop): rely on crashpad for reading the proto once crashpad
// supports it (https://crashpad.chromium.org/bug/10).
base::ScopedFILE minidump_file;
minidump_file.reset(base::OpenFile(minidump_path(), "rb"));
ASSERT_TRUE(minidump_file.get());
MINIDUMP_HEADER header = {};
ASSERT_EQ(1U, fread(&header, sizeof(header), 1, minidump_file.get()));
ASSERT_EQ(static_cast<ULONG32>(MINIDUMP_SIGNATURE), header.Signature);
ASSERT_EQ(2U, header.NumberOfStreams);
RVA directory_rva = header.StreamDirectoryRva;
MINIDUMP_DIRECTORY directory = {};
ASSERT_EQ(0, fseek(minidump_file.get(), directory_rva, SEEK_SET));
ASSERT_EQ(1U, fread(&directory, sizeof(directory), 1, minidump_file.get()));
ASSERT_EQ(0x4B6B0002U, directory.StreamType);
RVA report_rva = directory.Location.Rva;
ULONG32 report_size_bytes = directory.Location.DataSize;
std::string recovered_serialized_report;
recovered_serialized_report.resize(report_size_bytes);
ASSERT_EQ(0, fseek(minidump_file.get(), report_rva, SEEK_SET));
ASSERT_EQ(report_size_bytes, fread(&recovered_serialized_report.at(0), 1,
report_size_bytes, minidump_file.get()));
// Validate the recovered report.
std::string expected_serialized_report;
expected_report().SerializeToString(&expected_serialized_report);
ASSERT_EQ(expected_serialized_report, recovered_serialized_report);
StabilityReport recovered_report;
ASSERT_TRUE(recovered_report.ParseFromString(recovered_serialized_report));
}
TEST_F(WritePostmortemDumpTest, CrashpadCanReadTest) {
ASSERT_TRUE(WriteDump());
// Validate crashpad can read the produced minidump.
crashpad::FileReader minidump_file_reader;
ASSERT_TRUE(minidump_file_reader.Open(minidump_path()));
crashpad::ProcessSnapshotMinidump minidump_process_snapshot;
ASSERT_TRUE(minidump_process_snapshot.Initialize(&minidump_file_reader));
// Validate the crashpadinfo.
UUID client_id;
minidump_process_snapshot.ClientID(&client_id);
ASSERT_EQ(expected_client_id(), client_id);
UUID report_id;
minidump_process_snapshot.ReportID(&report_id);
ASSERT_EQ(expected_report_id(), report_id);
std::map<std::string, std::string> parameters =
minidump_process_snapshot.AnnotationsSimpleMap();
auto it = parameters.find("prod");
ASSERT_NE(parameters.end(), it);
ASSERT_EQ(kExpectedProductName, it->second);
it = parameters.find("ver");
ASSERT_NE(parameters.end(), it);
ASSERT_EQ(kVersion, it->second);
it = parameters.find("channel");
ASSERT_NE(parameters.end(), it);
ASSERT_EQ(kChannel, it->second);
it = parameters.find("plat");
ASSERT_NE(parameters.end(), it);
ASSERT_EQ(kPlatform, it->second);
}
} // namespace browser_watcher
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