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content / shell / app / shell_main_delegate.cc [blame]
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/shell/app/shell_main_delegate.h"
#include <iostream>
#include <tuple>
#include <utility>
#include "base/base_paths.h"
#include "base/base_switches.h"
#include "base/command_line.h"
#include "base/cpu.h"
#include "base/files/file.h"
#include "base/files/file_path.h"
#include "base/lazy_instance.h"
#include "base/logging.h"
#include "base/path_service.h"
#include "base/process/current_process.h"
#include "base/trace_event/trace_log.h"
#include "build/build_config.h"
#include "components/crash/core/common/crash_key.h"
#include "components/memory_system/initializer.h"
#include "components/memory_system/parameters.h"
#include "content/common/content_constants_internal.h"
#include "content/public/app/initialize_mojo_core.h"
#include "content/public/browser/browser_main_runner.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/main_function_params.h"
#include "content/public/common/url_constants.h"
#include "content/shell/app/shell_crash_reporter_client.h"
#include "content/shell/browser/shell_content_browser_client.h"
#include "content/shell/browser/shell_paths.h"
#include "content/shell/common/shell_content_client.h"
#include "content/shell/common/shell_switches.h"
#include "content/shell/gpu/shell_content_gpu_client.h"
#include "content/shell/renderer/shell_content_renderer_client.h"
#include "content/shell/utility/shell_content_utility_client.h"
#include "ipc/ipc_buildflags.h"
#include "net/cookies/cookie_monster.h"
#include "third_party/abseil-cpp/absl/types/variant.h"
#include "ui/base/resource/resource_bundle.h"
#if BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
#define IPC_MESSAGE_MACROS_LOG_ENABLED
#include "content/public/common/content_ipc_logging.h"
#define IPC_LOG_TABLE_ADD_ENTRY(msg_id, logger) \
content::RegisterIPCLogger(msg_id, logger)
#endif
#if !BUILDFLAG(IS_ANDROID)
#include "content/web_test/browser/web_test_browser_main_runner.h" // nogncheck
#include "content/web_test/browser/web_test_content_browser_client.h" // nogncheck
#include "content/web_test/renderer/web_test_content_renderer_client.h" // nogncheck
#endif
#if BUILDFLAG(IS_ANDROID)
#include "base/android/apk_assets.h"
#include "base/posix/global_descriptors.h"
#include "content/public/browser/android/compositor.h"
#include "content/shell/android/shell_descriptors.h"
#endif
#if !BUILDFLAG(IS_FUCHSIA)
#include "components/crash/core/app/crashpad.h" // nogncheck
#endif
#if BUILDFLAG(IS_APPLE)
#include "content/shell/app/paths_mac.h"
#endif
#if BUILDFLAG(IS_MAC)
#include "content/shell/app/shell_main_delegate_mac.h"
#endif // BUILDFLAG(IS_MAC)
#if BUILDFLAG(IS_WIN)
#include <initguid.h>
#include <windows.h>
#include "base/logging_win.h"
#include "base/win/scoped_handle.h"
#include "base/win/win_util.h"
#include "content/shell/common/v8_crashpad_support_win.h"
#endif
#if BUILDFLAG(IS_POSIX) && !BUILDFLAG(IS_MAC) && !BUILDFLAG(IS_ANDROID)
#include "v8/include/v8-wasm-trap-handler-posix.h"
#endif
#if BUILDFLAG(IS_IOS)
#include "content/shell/app/ios/shell_application_ios.h"
#endif
namespace {
enum class LoggingDest {
kFile,
kStderr,
#if BUILDFLAG(IS_WIN)
kHandle,
#endif
};
#if !BUILDFLAG(IS_FUCHSIA)
base::LazyInstance<content::ShellCrashReporterClient>::Leaky
g_shell_crash_client = LAZY_INSTANCE_INITIALIZER;
#endif
#if BUILDFLAG(IS_WIN)
// If "Content Shell" doesn't show up in your list of trace providers in
// Sawbuck, add these registry entries to your machine (NOTE the optional
// Wow6432Node key for x64 machines):
// 1. Find: HKLM\SOFTWARE\[Wow6432Node\]Google\Sawbuck\Providers
// 2. Add a subkey with the name "{6A3E50A4-7E15-4099-8413-EC94D8C2A4B6}"
// 3. Add these values:
// "default_flags"=dword:00000001
// "default_level"=dword:00000004
// @="Content Shell"
// {6A3E50A4-7E15-4099-8413-EC94D8C2A4B6}
const GUID kContentShellProviderName = {
0x6a3e50a4, 0x7e15, 0x4099,
{ 0x84, 0x13, 0xec, 0x94, 0xd8, 0xc2, 0xa4, 0xb6 } };
#endif
void InitLogging(const base::CommandLine& command_line) {
LoggingDest dest = LoggingDest::kFile;
if (command_line.GetSwitchValueASCII(switches::kEnableLogging) == "stderr") {
dest = LoggingDest::kStderr;
}
#if BUILDFLAG(IS_WIN)
// On Windows child process may be given a handle in the --log-file switch.
base::win::ScopedHandle log_handle;
if (command_line.GetSwitchValueASCII(switches::kEnableLogging) == "handle") {
auto handle_str = command_line.GetSwitchValueNative(switches::kLogFile);
uint32_t handle_value = 0;
if (base::StringToUint(handle_str, &handle_value)) {
// This handle is owned by the logging framework and is closed when the
// process exits.
HANDLE duplicate = nullptr;
if (::DuplicateHandle(GetCurrentProcess(),
base::win::Uint32ToHandle(handle_value),
GetCurrentProcess(), &duplicate, 0, FALSE,
DUPLICATE_SAME_ACCESS)) {
log_handle.Set(duplicate);
dest = LoggingDest::kHandle;
}
}
}
#endif // BUILDFLAG(IS_WIN)
base::FilePath log_filename;
if (dest == LoggingDest::kFile) {
log_filename = command_line.GetSwitchValuePath(switches::kLogFile);
if (log_filename.empty()) {
#if BUILDFLAG(IS_FUCHSIA) || BUILDFLAG(IS_IOS)
base::PathService::Get(base::DIR_TEMP, &log_filename);
#else
base::PathService::Get(base::DIR_EXE, &log_filename);
#endif
log_filename = log_filename.AppendASCII("content_shell.log");
}
}
logging::LoggingSettings settings;
#if BUILDFLAG(IS_WIN)
if (dest == LoggingDest::kHandle) {
// TODO(crbug.com/328285906) Use a ScopedHandle in logging settings.
settings.log_file = log_handle.release();
} else {
settings.log_file = nullptr;
}
#endif // BUILDFLAG(IS_WIN)
if (dest == LoggingDest::kFile) {
settings.log_file_path = log_filename.value();
}
if (dest == LoggingDest::kStderr) {
settings.logging_dest =
logging::LOG_TO_STDERR | logging::LOG_TO_SYSTEM_DEBUG_LOG;
} else {
// Includes both handle or provided filename on Windows.
settings.logging_dest = logging::LOG_TO_ALL;
}
settings.delete_old = logging::DELETE_OLD_LOG_FILE;
logging::InitLogging(settings);
logging::SetLogItems(true /* Process ID */, true /* Thread ID */,
true /* Timestamp */, false /* Tick count */);
}
} // namespace
namespace content {
ShellMainDelegate::ShellMainDelegate(bool is_content_browsertests)
: is_content_browsertests_(is_content_browsertests) {}
ShellMainDelegate::~ShellMainDelegate() {
}
std::optional<int> ShellMainDelegate::BasicStartupComplete() {
base::CommandLine& command_line = *base::CommandLine::ForCurrentProcess();
if (command_line.HasSwitch("run-layout-test")) {
std::cerr << std::string(79, '*') << "\n"
<< "* The flag --run-layout-test is obsolete. Please use --"
<< switches::kRunWebTests << " instead. *\n"
<< std::string(79, '*') << "\n";
command_line.AppendSwitch(switches::kRunWebTests);
}
#if BUILDFLAG(IS_ANDROID)
Compositor::Initialize();
#endif
#if BUILDFLAG(IS_WIN)
// Enable trace control and transport through event tracing for Windows.
logging::LogEventProvider::Initialize(kContentShellProviderName);
v8_crashpad_support::SetUp();
#endif
#if BUILDFLAG(IS_MAC)
// Needs to happen before InitializeResourceBundle().
EnsureCorrectResolutionSettings();
#endif // BUILDFLAG(IS_MAC)
InitLogging(command_line);
#if !BUILDFLAG(IS_ANDROID)
if (switches::IsRunWebTestsSwitchPresent()) {
const bool browser_process =
command_line.GetSwitchValueASCII(switches::kProcessType).empty();
if (browser_process) {
web_test_runner_ = std::make_unique<WebTestBrowserMainRunner>();
web_test_runner_->Initialize();
}
}
#endif
RegisterShellPathProvider();
return std::nullopt;
}
bool ShellMainDelegate::ShouldCreateFeatureList(InvokedIn invoked_in) {
return absl::holds_alternative<InvokedInChildProcess>(invoked_in);
}
bool ShellMainDelegate::ShouldInitializeMojo(InvokedIn invoked_in) {
return ShouldCreateFeatureList(invoked_in);
}
void ShellMainDelegate::PreSandboxStartup() {
// Disable platform crash handling and initialize the crash reporter, if
// requested.
// TODO(crbug.com/40188745): Implement crash reporter integration for Fuchsia.
#if !BUILDFLAG(IS_FUCHSIA)
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kEnableCrashReporter)) {
std::string process_type =
base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
switches::kProcessType);
crash_reporter::SetCrashReporterClient(g_shell_crash_client.Pointer());
// Reporting for sub-processes will be initialized in ZygoteForked.
if (process_type != switches::kZygoteProcess) {
crash_reporter::InitializeCrashpad(process_type.empty(), process_type);
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
crash_reporter::SetFirstChanceExceptionHandler(
v8::TryHandleWebAssemblyTrapPosix);
#endif
}
}
#endif // !BUILDFLAG(IS_FUCHSIA)
crash_reporter::InitializeCrashKeys();
InitializeResourceBundle();
}
absl::variant<int, MainFunctionParams> ShellMainDelegate::RunProcess(
const std::string& process_type,
MainFunctionParams main_function_params) {
// For non-browser process, return and have the caller run the main loop.
if (!process_type.empty())
return std::move(main_function_params);
base::CurrentProcess::GetInstance().SetProcessType(
base::CurrentProcessType::PROCESS_BROWSER);
base::trace_event::TraceLog::GetInstance()->SetProcessSortIndex(
kTraceEventBrowserProcessSortIndex);
#if !BUILDFLAG(IS_ANDROID)
if (switches::IsRunWebTestsSwitchPresent()) {
// Web tests implement their own BrowserMain() replacement.
web_test_runner_->RunBrowserMain(std::move(main_function_params));
web_test_runner_.reset();
// Returning 0 to indicate that we have replaced BrowserMain() and the
// caller should not call BrowserMain() itself. Web tests do not ever
// return an error.
return 0;
}
#endif
#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_IOS)
// On Android and iOS, we defer to the system message loop when the stack
// unwinds. So here we only create (and leak) a BrowserMainRunner. The
// shutdown of BrowserMainRunner doesn't happen in Chrome Android/iOS and
// doesn't work properly on Android/iOS at all.
std::unique_ptr<BrowserMainRunner> main_runner = BrowserMainRunner::Create();
// In browser tests, the |main_function_params| contains a |ui_task| which
// will execute the testing. The task will be executed synchronously inside
// Initialize() so we don't depend on the BrowserMainRunner being Run().
int initialize_exit_code =
main_runner->Initialize(std::move(main_function_params));
DCHECK_LT(initialize_exit_code, 0)
<< "BrowserMainRunner::Initialize failed in ShellMainDelegate";
std::ignore = main_runner.release();
// Return 0 as BrowserMain() should not be called after this, bounce up to
// the system message loop for ContentShell, and we're already done thanks
// to the |ui_task| for browser tests.
return 0;
#else
// On non-Android, we can return the |main_function_params| back and have the
// caller run BrowserMain() normally.
return std::move(main_function_params);
#endif
}
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
void ShellMainDelegate::ZygoteForked() {
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kEnableCrashReporter)) {
std::string process_type =
base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
switches::kProcessType);
crash_reporter::InitializeCrashpad(false, process_type);
crash_reporter::SetFirstChanceExceptionHandler(
v8::TryHandleWebAssemblyTrapPosix);
}
}
#endif // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
void ShellMainDelegate::InitializeResourceBundle() {
#if BUILDFLAG(IS_ANDROID)
// On Android, the renderer runs with a different UID and can never access
// the file system. Use the file descriptor passed in at launch time.
auto* global_descriptors = base::GlobalDescriptors::GetInstance();
int pak_fd = global_descriptors->MaybeGet(kShellPakDescriptor);
base::MemoryMappedFile::Region pak_region;
if (pak_fd >= 0) {
pak_region = global_descriptors->GetRegion(kShellPakDescriptor);
} else {
pak_fd =
base::android::OpenApkAsset("assets/content_shell.pak", &pak_region);
// Loaded from disk for browsertests.
if (pak_fd < 0) {
base::FilePath pak_file;
bool r = base::PathService::Get(base::DIR_ANDROID_APP_DATA, &pak_file);
DCHECK(r);
pak_file = pak_file.Append(FILE_PATH_LITERAL("paks"));
pak_file = pak_file.Append(FILE_PATH_LITERAL("content_shell.pak"));
int flags = base::File::FLAG_OPEN | base::File::FLAG_READ;
pak_fd = base::File(pak_file, flags).TakePlatformFile();
pak_region = base::MemoryMappedFile::Region::kWholeFile;
}
global_descriptors->Set(kShellPakDescriptor, pak_fd, pak_region);
}
DCHECK_GE(pak_fd, 0);
// TODO(crbug.com/40346051): A better way to prevent fdsan error from a double
// close is to refactor GlobalDescriptors.{Get,MaybeGet} to return
// "const base::File&" rather than fd itself.
base::File android_pak_file(pak_fd);
ui::ResourceBundle::InitSharedInstanceWithPakFileRegion(
android_pak_file.Duplicate(), pak_region);
ui::ResourceBundle::GetSharedInstance().AddDataPackFromFileRegion(
std::move(android_pak_file), pak_region, ui::k100Percent);
#elif BUILDFLAG(IS_APPLE)
ui::ResourceBundle::InitSharedInstanceWithPakPath(GetResourcesPakFilePath());
#else
base::FilePath pak_file;
bool r = base::PathService::Get(base::DIR_ASSETS, &pak_file);
DCHECK(r);
pak_file = pak_file.Append(FILE_PATH_LITERAL("content_shell.pak"));
ui::ResourceBundle::InitSharedInstanceWithPakPath(pak_file);
#endif
}
std::optional<int> ShellMainDelegate::PreBrowserMain() {
std::optional<int> exit_code = content::ContentMainDelegate::PreBrowserMain();
if (exit_code.has_value())
return exit_code;
#if BUILDFLAG(IS_MAC)
RegisterShellCrApp();
#endif
return std::nullopt;
}
std::optional<int> ShellMainDelegate::PostEarlyInitialization(
InvokedIn invoked_in) {
if (!ShouldCreateFeatureList(invoked_in)) {
// Apply field trial testing configuration since content did not.
browser_client_->CreateFeatureListAndFieldTrials();
}
if (!ShouldInitializeMojo(invoked_in)) {
InitializeMojoCore();
}
const std::string process_type =
base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
switches::kProcessType);
// ShellMainDelegate has GWP-ASan as well as Profiling Client disabled.
// Consequently, we provide no parameters for these two. The memory_system
// includes the PoissonAllocationSampler dynamically only if the Profiling
// Client is enabled. However, we are not sure if this is the only user of
// PoissonAllocationSampler in the ContentShell. Therefore, enforce inclusion
// at the moment.
//
// TODO(crbug.com/40062835): Clarify which users of
// PoissonAllocationSampler we have in the ContentShell. Do we really need to
// enforce it?
memory_system::Initializer()
.SetDispatcherParameters(memory_system::DispatcherParameters::
PoissonAllocationSamplerInclusion::kEnforce,
memory_system::DispatcherParameters::
AllocationTraceRecorderInclusion::kIgnore,
process_type)
.Initialize(memory_system_);
return std::nullopt;
}
ContentClient* ShellMainDelegate::CreateContentClient() {
content_client_ = std::make_unique<ShellContentClient>();
return content_client_.get();
}
ContentBrowserClient* ShellMainDelegate::CreateContentBrowserClient() {
#if !BUILDFLAG(IS_ANDROID)
if (switches::IsRunWebTestsSwitchPresent()) {
browser_client_ = std::make_unique<WebTestContentBrowserClient>();
return browser_client_.get();
}
#endif
browser_client_ = std::make_unique<ShellContentBrowserClient>();
return browser_client_.get();
}
ContentGpuClient* ShellMainDelegate::CreateContentGpuClient() {
gpu_client_ = std::make_unique<ShellContentGpuClient>();
return gpu_client_.get();
}
ContentRendererClient* ShellMainDelegate::CreateContentRendererClient() {
#if !BUILDFLAG(IS_ANDROID)
if (switches::IsRunWebTestsSwitchPresent()) {
renderer_client_ = std::make_unique<WebTestContentRendererClient>();
return renderer_client_.get();
}
#endif
renderer_client_ = std::make_unique<ShellContentRendererClient>();
return renderer_client_.get();
}
ContentUtilityClient* ShellMainDelegate::CreateContentUtilityClient() {
utility_client_ =
std::make_unique<ShellContentUtilityClient>(is_content_browsertests_);
return utility_client_.get();
}
} // namespace content