// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/crash/core/app/fallback_crash_handler_win.h"
#include <map>
#include <memory>
#include <string>
#include <vector>
#include "base/base_switches.h"
#include "base/check_op.h"
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/files/scoped_temp_dir.h"
#include "base/process/process_handle.h"
#include "base/strings/string_number_conversions.h"
#include "base/test/multiprocess_test.h"
#include "base/threading/platform_thread.h"
#include "base/win/scoped_handle.h"
#include "base/win/win_util.h"
#include "components/crash/core/app/fallback_crash_handler_launcher_win.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/multiprocess_func_list.h"
#include "third_party/crashpad/crashpad/client/crash_report_database.h"
#include "third_party/crashpad/crashpad/client/settings.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 crash_reporter {
namespace {
class ExceptionPointers {
public:
ExceptionPointers() {
RtlCaptureContext(&context_);
memset(&exception_, 0, sizeof(exception_));
exception_.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
exception_ptrs_.ExceptionRecord = &exception_;
exception_ptrs_.ContextRecord = &context_;
}
ExceptionPointers(const ExceptionPointers&) = delete;
ExceptionPointers& operator=(const ExceptionPointers&) = delete;
EXCEPTION_POINTERS* exception_ptrs() { return &exception_ptrs_; }
std::string AsString() {
return base::NumberToString(reinterpret_cast<uintptr_t>(exception_ptrs()));
}
private:
CONTEXT context_;
EXCEPTION_RECORD exception_;
EXCEPTION_POINTERS exception_ptrs_;
};
const char kProduct[] = "SomeProduct";
const char kVersion[] = "1.2.3.6";
const char kChannel[] = "canary";
const char kProcessType[] = "Test";
// This main function runs the handler to test.
MULTIPROCESS_TEST_MAIN(FallbackCrashHandlerWinRunHandler) {
base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess();
FallbackCrashHandler handler;
CHECK(handler.ParseCommandLine(*cmd_line));
CHECK(handler.GenerateCrashDump(kProduct, kVersion, kChannel, kProcessType));
return 0;
}
// This main function runs the setup and generates the simulated crash.
MULTIPROCESS_TEST_MAIN(FallbackCrashHandlerWinMain) {
base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess();
base::FilePath directory = cmd_line->GetSwitchValuePath("directory");
CHECK(!directory.empty());
base::CommandLine base_cmdline =
base::GetMultiProcessTestChildBaseCommandLine();
base_cmdline.AppendSwitchASCII(switches::kTestChildProcess,
"FallbackCrashHandlerWinRunHandler");
FallbackCrashHandlerLauncher launcher;
CHECK(launcher.Initialize(base_cmdline, directory));
ExceptionPointers exception_ptrs;
CHECK_EQ(0U,
launcher.LaunchAndWaitForHandler(exception_ptrs.exception_ptrs()));
return 0;
}
class FallbackCrashHandlerWinTest : public testing::Test {
public:
FallbackCrashHandlerWinTest() : self_handle_(base::kNullProcessHandle) {}
FallbackCrashHandlerWinTest(const FallbackCrashHandlerWinTest&) = delete;
FallbackCrashHandlerWinTest& operator=(const FallbackCrashHandlerWinTest&) =
delete;
void SetUp() override {
ASSERT_TRUE(database_dir_.CreateUniqueTempDir());
// Open a handle to our own process.
const DWORD kAccessMask =
PROCESS_QUERY_INFORMATION | PROCESS_VM_READ | PROCESS_DUP_HANDLE;
self_handle_ = OpenProcess(kAccessMask, FALSE, base::GetCurrentProcId());
DWORD err = GetLastError();
EXPECT_NE(base::kNullProcessHandle, self_handle_) << "GetLastError: "
<< err;
}
void TearDown() override {
if (self_handle_ != base::kNullProcessHandle) {
CloseHandle(self_handle_);
self_handle_ = base::kNullProcessHandle;
}
}
std::string SelfHandleAsString() const {
return base::NumberToString(base::win::HandleToUint32(self_handle_));
}
void CreateDatabase() {
std::unique_ptr<crashpad::CrashReportDatabase> database =
crashpad::CrashReportDatabase::InitializeWithoutCreating(
database_dir_.GetPath());
}
protected:
base::ProcessHandle self_handle_;
base::ScopedTempDir database_dir_;
};
} // namespace
TEST_F(FallbackCrashHandlerWinTest, ParseCommandLine) {
FallbackCrashHandler handler;
// An empty command line shouldn't work.
base::CommandLine cmd_line(base::FilePath(L"empty"));
ASSERT_FALSE(handler.ParseCommandLine(cmd_line));
ExceptionPointers exception_ptrs;
cmd_line.AppendSwitchPath("database", database_dir_.GetPath());
cmd_line.AppendSwitchASCII("exception-pointers", exception_ptrs.AsString());
cmd_line.AppendSwitchASCII("process", SelfHandleAsString());
// Thread missing, still should fail.
ASSERT_FALSE(handler.ParseCommandLine(cmd_line));
cmd_line.AppendSwitchASCII(
"thread", base::NumberToString(base::PlatformThread::CurrentId()));
// Should succeed with a fully populated command line.
// Because of how handle ownership is guarded, we have to "disown" it before
// the handler takes it over.
EXPECT_TRUE(handler.ParseCommandLine(cmd_line));
self_handle_ = base::kNullProcessHandle;
}
TEST_F(FallbackCrashHandlerWinTest, GenerateCrashDump) {
base::CommandLine cmd_line = base::GetMultiProcessTestChildBaseCommandLine();
cmd_line.AppendSwitchPath("directory", database_dir_.GetPath());
base::LaunchOptions options;
options.start_hidden = true;
base::Process test_child = base::SpawnMultiProcessTestChild(
"FallbackCrashHandlerWinMain", cmd_line, options);
ASSERT_TRUE(test_child.IsValid());
int exit_code = -1;
ASSERT_TRUE(test_child.WaitForExit(&exit_code));
ASSERT_EQ(0, exit_code);
// Validate that the database contains one valid crash dump.
std::unique_ptr<crashpad::CrashReportDatabase> database =
crashpad::CrashReportDatabase::InitializeWithoutCreating(
database_dir_.GetPath());
std::vector<crashpad::CrashReportDatabase::Report> reports;
ASSERT_EQ(crashpad::CrashReportDatabase::kNoError,
database->GetPendingReports(&reports));
EXPECT_EQ(1U, reports.size());
// Validate crashpad can read the produced minidump.
crashpad::FileReader minidump_file_reader;
ASSERT_TRUE(minidump_file_reader.Open(reports[0].file_path));
crashpad::ProcessSnapshotMinidump minidump_process_snapshot;
ASSERT_TRUE(minidump_process_snapshot.Initialize(&minidump_file_reader));
crashpad::UUID expected_client_id;
ASSERT_TRUE(database->GetSettings()->GetClientID(&expected_client_id));
// Validate that the CrashpadInfo in the report contains the same basic
// info, as does the database.
crashpad::UUID client_id;
minidump_process_snapshot.ClientID(&client_id);
EXPECT_EQ(expected_client_id, client_id);
crashpad::UUID report_id;
minidump_process_snapshot.ReportID(&report_id);
EXPECT_EQ(reports[0].uuid, report_id);
std::map<std::string, std::string> parameters =
minidump_process_snapshot.AnnotationsSimpleMap();
auto it = parameters.find("prod");
EXPECT_NE(parameters.end(), it);
EXPECT_EQ(kProduct, it->second);
it = parameters.find("ver");
EXPECT_NE(parameters.end(), it);
EXPECT_EQ(kVersion, it->second);
it = parameters.find("channel");
EXPECT_NE(parameters.end(), it);
EXPECT_EQ(kChannel, it->second);
it = parameters.find("plat");
EXPECT_NE(parameters.end(), it);
#if defined(ARCH_CPU_64_BITS)
EXPECT_EQ("Win64", it->second);
#else
EXPECT_EQ("Win32", it->second);
#endif
it = parameters.find("ptype");
EXPECT_NE(parameters.end(), it);
EXPECT_EQ(kProcessType, it->second);
uint64_t int_value;
it = parameters.find("ProcessPrivateUsage");
EXPECT_NE(parameters.end(), it);
EXPECT_TRUE(base::StringToUint64(it->second, &int_value));
EXPECT_NE(0U, int_value);
it = parameters.find("ProcessPeakWorkingSetSize");
EXPECT_NE(parameters.end(), it);
EXPECT_TRUE(base::StringToUint64(it->second, &int_value));
EXPECT_NE(0U, int_value);
it = parameters.find("ProcessPeakPagefileUsage");
EXPECT_NE(parameters.end(), it);
EXPECT_TRUE(base::StringToUint64(it->second, &int_value));
EXPECT_NE(0U, int_value);
it = parameters.find("SystemCommitRemaining");
EXPECT_NE(parameters.end(), it);
EXPECT_TRUE(base::StringToUint64(it->second, &int_value));
// TODO(siggi): disable if this flakes, though bots shouldn't be that hard up
// on memory :).
EXPECT_NE(0U, int_value);
it = parameters.find("SystemCommitLimit");
EXPECT_NE(parameters.end(), it);
EXPECT_TRUE(base::StringToUint64(it->second, &int_value));
EXPECT_NE(0U, int_value);
}
} // namespace crash_reporter
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