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cef/libcef/common/main_delegate.cc

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// Copyright (c) 2012 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 "libcef/common/main_delegate.h"
#include "libcef/browser/content_browser_client.h"
#include "libcef/browser/context.h"
#include "libcef/common/cef_switches.h"
#include "libcef/common/command_line_impl.h"
#include "libcef/common/crash_reporter_client.h"
#include "libcef/renderer/content_renderer_client.h"
#include "libcef/utility/content_utility_client.h"
#include "base/base_switches.h"
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/lazy_instance.h"
#include "base/path_service.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/synchronization/waitable_event.h"
#include "base/threading/thread.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/chrome_switches.h"
#include "content/public/browser/browser_main_runner.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/main_function_params.h"
#include "ui/base/layout.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/base/ui_base_paths.h"
#include "ui/base/ui_base_switches.h"
#if defined(OS_WIN)
#include <Objbase.h> // NOLINT(build/include_order)
#include "components/crash/app/breakpad_win.h"
#endif
#if defined(OS_MACOSX)
#include "base/mac/os_crash_dumps.h"
#include "base/mac/bundle_locations.h"
#include "base/mac/foundation_util.h"
#include "components/crash/app/breakpad_mac.h"
#include "content/public/common/content_paths.h"
#endif
#if defined(OS_POSIX) && !defined(OS_MACOSX)
#include "components/crash/app/breakpad_linux.h"
#endif
#if defined(OS_LINUX)
#include "base/environment.h"
#include "base/nix/xdg_util.h"
#endif
namespace {
base::LazyInstance<CefCrashReporterClient>::Leaky g_crash_reporter_client =
LAZY_INSTANCE_INITIALIZER;
#if defined(OS_MACOSX)
base::FilePath GetFrameworksPath() {
// Start out with the path to the running executable.
base::FilePath execPath;
PathService::Get(base::FILE_EXE, &execPath);
// Get the main bundle path.
base::FilePath bundlePath = base::mac::GetAppBundlePath(execPath);
// Go into the Contents/Frameworks directory.
return bundlePath.Append(FILE_PATH_LITERAL("Contents"))
.Append(FILE_PATH_LITERAL("Frameworks"));
}
// The framework bundle path is used for loading resources, libraries, etc.
base::FilePath GetFrameworkBundlePath() {
return GetFrameworksPath().Append(
FILE_PATH_LITERAL("Chromium Embedded Framework.framework"));
}
base::FilePath GetResourcesFilePath() {
return GetFrameworkBundlePath().Append(FILE_PATH_LITERAL("Resources"));
}
void OverrideFrameworkBundlePath() {
base::mac::SetOverrideFrameworkBundlePath(GetFrameworkBundlePath());
}
void OverrideChildProcessPath() {
// Retrieve the name of the running executable.
base::FilePath path;
PathService::Get(base::FILE_EXE, &path);
std::string name = path.BaseName().value();
base::FilePath helper_path = GetFrameworksPath()
.Append(FILE_PATH_LITERAL(name+" Helper.app"))
.Append(FILE_PATH_LITERAL("Contents"))
.Append(FILE_PATH_LITERAL("MacOS"))
.Append(FILE_PATH_LITERAL(name+" Helper"));
PathService::Override(content::CHILD_PROCESS_EXE, helper_path);
}
#else // !defined(OS_MACOSX)
base::FilePath GetResourcesFilePath() {
base::FilePath pak_dir;
PathService::Get(base::DIR_MODULE, &pak_dir);
return pak_dir;
}
#endif // !defined(OS_MACOSX)
#if defined(OS_LINUX)
// Based on chrome/common/chrome_paths_linux.cc.
// See http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
// for a spec on where config files go. The net effect for most
// systems is we use ~/.config/chromium/ for Chromium and
// ~/.config/google-chrome/ for official builds.
// (This also helps us sidestep issues with other apps grabbing ~/.chromium .)
bool GetDefaultUserDataDirectory(base::FilePath* result) {
scoped_ptr<base::Environment> env(base::Environment::Create());
base::FilePath config_dir(
base::nix::GetXDGDirectory(env.get(),
base::nix::kXdgConfigHomeEnvVar,
base::nix::kDotConfigDir));
*result = config_dir.Append(FILE_PATH_LITERAL("cef_user_data"));
return true;
}
#elif defined(OS_MACOSX)
// Based on chrome/common/chrome_paths_mac.mm.
bool GetDefaultUserDataDirectory(base::FilePath* result) {
if (!PathService::Get(base::DIR_APP_DATA, result))
return false;
*result = result->Append(FILE_PATH_LITERAL("CEF"));
*result = result->Append(FILE_PATH_LITERAL("User Data"));
return true;
}
#elif defined(OS_WIN)
// Based on chrome/common/chrome_paths_win.cc.
bool GetDefaultUserDataDirectory(base::FilePath* result) {
if (!PathService::Get(base::DIR_LOCAL_APP_DATA, result))
return false;
*result = result->Append(FILE_PATH_LITERAL("CEF"));
*result = result->Append(FILE_PATH_LITERAL("User Data"));
return true;
}
#endif
base::FilePath GetUserDataPath() {
const CefSettings& settings = CefContext::Get()->settings();
if (settings.user_data_path.length > 0)
return base::FilePath(CefString(&settings.user_data_path));
base::FilePath result;
if (GetDefaultUserDataDirectory(&result))
return result;
if (PathService::Get(base::DIR_TEMP, &result))
return result;
NOTREACHED();
return result;
}
// Returns true if |scale_factor| is supported by this platform.
// Same as ResourceBundle::IsScaleFactorSupported.
bool IsScaleFactorSupported(ui::ScaleFactor scale_factor) {
const std::vector<ui::ScaleFactor>& supported_scale_factors =
ui::GetSupportedScaleFactors();
return std::find(supported_scale_factors.begin(),
supported_scale_factors.end(),
scale_factor) != supported_scale_factors.end();
}
// Used to run the UI on a separate thread.
class CefUIThread : public base::Thread {
public:
explicit CefUIThread(const content::MainFunctionParams& main_function_params)
: base::Thread("CefUIThread"),
main_function_params_(main_function_params) {
}
void Init() override {
#if defined(OS_WIN)
// Initializes the COM library on the current thread.
CoInitialize(NULL);
#endif
// Use our own browser process runner.
browser_runner_.reset(content::BrowserMainRunner::Create());
// Initialize browser process state. Uses the current thread's mesage loop.
int exit_code = browser_runner_->Initialize(main_function_params_);
CHECK_EQ(exit_code, -1);
}
void CleanUp() override {
browser_runner_->Shutdown();
browser_runner_.reset(NULL);
#if defined(OS_WIN)
// Closes the COM library on the current thread. CoInitialize must
// be balanced by a corresponding call to CoUninitialize.
CoUninitialize();
#endif
}
protected:
content::MainFunctionParams main_function_params_;
scoped_ptr<content::BrowserMainRunner> browser_runner_;
};
} // namespace
CefMainDelegate::CefMainDelegate(CefRefPtr<CefApp> application)
: content_client_(application) {
// Necessary so that exported functions from base_impl.cc will be included
// in the binary.
extern void base_impl_stub();
base_impl_stub();
}
CefMainDelegate::~CefMainDelegate() {
}
bool CefMainDelegate::BasicStartupComplete(int* exit_code) {
#if defined(OS_MACOSX)
OverrideFrameworkBundlePath();
#endif
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
std::string process_type =
command_line->GetSwitchValueASCII(switches::kProcessType);
if (process_type.empty()) {
// In the browser process. Populate the global command-line object.
const CefSettings& settings = CefContext::Get()->settings();
if (settings.command_line_args_disabled) {
// Remove any existing command-line arguments.
base::CommandLine::StringVector argv;
argv.push_back(command_line->GetProgram().value());
command_line->InitFromArgv(argv);
const base::CommandLine::SwitchMap& map = command_line->GetSwitches();
const_cast<base::CommandLine::SwitchMap*>(&map)->clear();
}
if (settings.single_process)
command_line->AppendSwitch(switches::kSingleProcess);
bool no_sandbox = settings.no_sandbox ? true : false;
if (settings.browser_subprocess_path.length > 0) {
base::FilePath file_path =
base::FilePath(CefString(&settings.browser_subprocess_path));
if (!file_path.empty()) {
command_line->AppendSwitchPath(switches::kBrowserSubprocessPath,
file_path);
#if defined(OS_WIN)
// The sandbox is not supported when using a separate subprocess
// executable on Windows.
no_sandbox = true;
#endif
}
}
if (no_sandbox)
command_line->AppendSwitch(switches::kNoSandbox);
if (settings.user_agent.length > 0) {
command_line->AppendSwitchASCII(switches::kUserAgent,
CefString(&settings.user_agent));
} else if (settings.product_version.length > 0) {
command_line->AppendSwitchASCII(switches::kProductVersion,
CefString(&settings.product_version));
}
if (settings.locale.length > 0) {
command_line->AppendSwitchASCII(switches::kLang,
CefString(&settings.locale));
} else if (!command_line->HasSwitch(switches::kLang)) {
command_line->AppendSwitchASCII(switches::kLang, "en-US");
}
if (settings.log_file.length > 0) {
base::FilePath file_path = base::FilePath(CefString(&settings.log_file));
if (!file_path.empty())
command_line->AppendSwitchPath(switches::kLogFile, file_path);
}
if (settings.log_severity != LOGSEVERITY_DEFAULT) {
std::string log_severity;
switch (settings.log_severity) {
case LOGSEVERITY_VERBOSE:
log_severity = switches::kLogSeverity_Verbose;
break;
case LOGSEVERITY_INFO:
log_severity = switches::kLogSeverity_Info;
break;
case LOGSEVERITY_WARNING:
log_severity = switches::kLogSeverity_Warning;
break;
case LOGSEVERITY_ERROR:
log_severity = switches::kLogSeverity_Error;
break;
case LOGSEVERITY_DISABLE:
log_severity = switches::kLogSeverity_Disable;
break;
default:
break;
}
if (!log_severity.empty())
command_line->AppendSwitchASCII(switches::kLogSeverity, log_severity);
}
if (settings.javascript_flags.length > 0) {
command_line->AppendSwitchASCII(switches::kJavaScriptFlags,
CefString(&settings.javascript_flags));
}
if (settings.pack_loading_disabled) {
command_line->AppendSwitch(switches::kDisablePackLoading);
} else {
if (settings.resources_dir_path.length > 0) {
base::FilePath file_path =
base::FilePath(CefString(&settings.resources_dir_path));
if (!file_path.empty()) {
command_line->AppendSwitchPath(switches::kResourcesDirPath,
file_path);
}
}
if (settings.locales_dir_path.length > 0) {
base::FilePath file_path =
base::FilePath(CefString(&settings.locales_dir_path));
if (!file_path.empty())
command_line->AppendSwitchPath(switches::kLocalesDirPath, file_path);
}
}
if (settings.remote_debugging_port >= 1024 &&
settings.remote_debugging_port <= 65535) {
command_line->AppendSwitchASCII(switches::kRemoteDebuggingPort,
base::IntToString(settings.remote_debugging_port));
}
if (settings.uncaught_exception_stack_size > 0) {
command_line->AppendSwitchASCII(switches::kUncaughtExceptionStackSize,
base::IntToString(settings.uncaught_exception_stack_size));
}
if (settings.context_safety_implementation != 0) {
command_line->AppendSwitchASCII(switches::kContextSafetyImplementation,
base::IntToString(settings.context_safety_implementation));
}
if (settings.windowless_rendering_enabled) {
#if defined(OS_MACOSX)
// The delegated renderer is not yet enabled by default on OS X.
command_line->AppendSwitch(switches::kEnableDelegatedRenderer);
#endif
}
}
if (content_client_.application().get()) {
// Give the application a chance to view/modify the command line.
CefRefPtr<CefCommandLineImpl> commandLinePtr(
new CefCommandLineImpl(command_line, false, false));
content_client_.application()->OnBeforeCommandLineProcessing(
CefString(process_type), commandLinePtr.get());
commandLinePtr->Detach(NULL);
}
// Initialize logging.
logging::LoggingSettings log_settings;
const base::FilePath& log_file =
command_line->GetSwitchValuePath(switches::kLogFile);
log_settings.log_file = log_file.value().c_str();
log_settings.lock_log = logging::DONT_LOCK_LOG_FILE;
log_settings.delete_old = logging::APPEND_TO_OLD_LOG_FILE;
logging::LogSeverity log_severity = logging::LOG_INFO;
std::string log_severity_str =
command_line->GetSwitchValueASCII(switches::kLogSeverity);
if (!log_severity_str.empty()) {
if (LowerCaseEqualsASCII(log_severity_str,
switches::kLogSeverity_Verbose)) {
log_severity = logging::LOG_VERBOSE;
} else if (LowerCaseEqualsASCII(log_severity_str,
switches::kLogSeverity_Warning)) {
log_severity = logging::LOG_WARNING;
} else if (LowerCaseEqualsASCII(log_severity_str,
switches::kLogSeverity_Error)) {
log_severity = logging::LOG_ERROR;
} else if (LowerCaseEqualsASCII(log_severity_str,
switches::kLogSeverity_Disable)) {
log_severity = LOGSEVERITY_DISABLE;
}
}
if (log_severity == LOGSEVERITY_DISABLE) {
log_settings.logging_dest = logging::LOG_NONE;
} else {
log_settings.logging_dest = logging::LOG_TO_ALL;
logging::SetMinLogLevel(log_severity);
}
logging::InitLogging(log_settings);
content::SetContentClient(&content_client_);
return false;
}
void CefMainDelegate::PreSandboxStartup() {
const base::CommandLine* command_line =
base::CommandLine::ForCurrentProcess();
const std::string& process_type =
command_line->GetSwitchValueASCII(switches::kProcessType);
if (command_line->HasSwitch(switches::kEnableCrashReporter)) {
crash_reporter::SetCrashReporterClient(g_crash_reporter_client.Pointer());
#if defined(OS_MACOSX)
base::mac::DisableOSCrashDumps();
breakpad::InitCrashReporter(process_type);
breakpad::InitCrashProcessInfo(process_type);
#elif defined(OS_POSIX) && !defined(OS_MACOSX)
if (process_type != switches::kZygoteProcess)
breakpad::InitCrashReporter(process_type);
#elif defined(OS_WIN)
UINT new_flags =
SEM_FAILCRITICALERRORS | SEM_NOGPFAULTERRORBOX | SEM_NOOPENFILEERRORBOX;
UINT existing_flags = SetErrorMode(new_flags);
SetErrorMode(existing_flags | new_flags);
breakpad::InitCrashReporter(process_type);
#endif
}
if (!command_line->HasSwitch(switches::kProcessType)) {
// Only these paths when executing the main process.
#if defined(OS_MACOSX)
OverrideChildProcessPath();
#endif
// Paths used to locate spell checking dictionary files.
const base::FilePath& user_data_path = GetUserDataPath();
PathService::Override(chrome::DIR_USER_DATA, user_data_path);
PathService::OverrideAndCreateIfNeeded(
chrome::DIR_APP_DICTIONARIES,
user_data_path.AppendASCII("Dictionaries"),
false, // May not be an absolute path.
true); // Create if necessary.
}
if (command_line->HasSwitch(switches::kDisablePackLoading))
content_client_.set_pack_loading_disabled(true);
InitializeResourceBundle();
}
int CefMainDelegate::RunProcess(
const std::string& process_type,
const content::MainFunctionParams& main_function_params) {
if (process_type.empty()) {
const CefSettings& settings = CefContext::Get()->settings();
if (!settings.multi_threaded_message_loop) {
// Use our own browser process runner.
browser_runner_.reset(content::BrowserMainRunner::Create());
// Initialize browser process state. Results in a call to
// CefBrowserMain::PreMainMessageLoopStart() which creates the UI message
// loop.
int exit_code = browser_runner_->Initialize(main_function_params);
if (exit_code >= 0)
return exit_code;
} else {
// Run the UI on a separate thread.
scoped_ptr<base::Thread> thread;
thread.reset(new CefUIThread(main_function_params));
base::Thread::Options options;
options.message_loop_type = base::MessageLoop::TYPE_UI;
if (!thread->StartWithOptions(options)) {
NOTREACHED() << "failed to start UI thread";
return 1;
}
ui_thread_.swap(thread);
}
return 0;
}
return -1;
}
void CefMainDelegate::ProcessExiting(const std::string& process_type) {
ResourceBundle::CleanupSharedInstance();
}
#if defined(OS_POSIX) && !defined(OS_ANDROID) && !defined(OS_MACOSX)
void CefMainDelegate::ZygoteForked() {
const base::CommandLine* command_line =
base::CommandLine::ForCurrentProcess();
if (command_line->HasSwitch(switches::kEnableCrashReporter)) {
const std::string& process_type = command_line->GetSwitchValueASCII(
switches::kProcessType);
breakpad::InitCrashReporter(process_type);
}
}
#endif
content::ContentBrowserClient* CefMainDelegate::CreateContentBrowserClient() {
browser_client_.reset(new CefContentBrowserClient);
return browser_client_.get();
}
content::ContentRendererClient*
CefMainDelegate::CreateContentRendererClient() {
renderer_client_.reset(new CefContentRendererClient);
return renderer_client_.get();
}
content::ContentUtilityClient* CefMainDelegate::CreateContentUtilityClient() {
utility_client_.reset(new CefContentUtilityClient);
return utility_client_.get();
}
void CefMainDelegate::ShutdownBrowser() {
if (browser_runner_.get()) {
browser_runner_->Shutdown();
browser_runner_.reset(NULL);
}
if (ui_thread_.get()) {
// Blocks until the thread has stopped.
ui_thread_->Stop();
ui_thread_.reset();
}
}
void CefMainDelegate::InitializeResourceBundle() {
const base::CommandLine* command_line =
base::CommandLine::ForCurrentProcess();
base::FilePath cef_pak_file, cef_100_percent_pak_file,
cef_200_percent_pak_file, devtools_pak_file, locales_dir;
if (!content_client_.pack_loading_disabled()) {
base::FilePath resources_dir;
if (command_line->HasSwitch(switches::kResourcesDirPath)) {
resources_dir =
command_line->GetSwitchValuePath(switches::kResourcesDirPath);
}
if (resources_dir.empty())
resources_dir = GetResourcesFilePath();
if (!resources_dir.empty()) {
cef_pak_file = resources_dir.Append(FILE_PATH_LITERAL("cef.pak"));
cef_100_percent_pak_file =
resources_dir.Append(FILE_PATH_LITERAL("cef_100_percent.pak"));
cef_200_percent_pak_file =
resources_dir.Append(FILE_PATH_LITERAL("cef_200_percent.pak"));
devtools_pak_file =
resources_dir.Append(FILE_PATH_LITERAL("devtools_resources.pak"));
}
if (command_line->HasSwitch(switches::kLocalesDirPath))
locales_dir = command_line->GetSwitchValuePath(switches::kLocalesDirPath);
if (!locales_dir.empty())
PathService::Override(ui::DIR_LOCALES, locales_dir);
}
std::string locale = command_line->GetSwitchValueASCII(switches::kLang);
DCHECK(!locale.empty());
const std::string loaded_locale =
ui::ResourceBundle::InitSharedInstanceWithLocale(
locale,
&content_client_,
ui::ResourceBundle::LOAD_COMMON_RESOURCES);
ResourceBundle& resource_bundle = ResourceBundle::GetSharedInstance();
if (!content_client_.pack_loading_disabled()) {
if (loaded_locale.empty())
LOG(ERROR) << "Could not load locale pak for " << locale;
content_client_.set_allow_pack_file_load(true);
if (base::PathExists(cef_pak_file)) {
resource_bundle.AddDataPackFromPath(cef_pak_file, ui::SCALE_FACTOR_NONE);
} else {
LOG(ERROR) << "Could not load cef.pak";
}
// On OS X and Linux/Aura always load the 1x data pack first as the 2x data
// pack contains both 1x and 2x images.
const bool load_100_percent =
#if defined(OS_WIN)
IsScaleFactorSupported(ui::SCALE_FACTOR_100P);
#else
true;
#endif
if (load_100_percent) {
if (base::PathExists(cef_100_percent_pak_file)) {
resource_bundle.AddDataPackFromPath(
cef_100_percent_pak_file, ui::SCALE_FACTOR_100P);
} else {
LOG(ERROR) << "Could not load cef_100_percent.pak";
}
}
if (IsScaleFactorSupported(ui::SCALE_FACTOR_200P)) {
if (base::PathExists(cef_200_percent_pak_file)) {
resource_bundle.AddDataPackFromPath(
cef_200_percent_pak_file, ui::SCALE_FACTOR_200P);
} else {
LOG(ERROR) << "Could not load cef_200_percent.pak";
}
}
if (base::PathExists(devtools_pak_file)) {
resource_bundle.AddDataPackFromPath(
devtools_pak_file, ui::SCALE_FACTOR_NONE);
}
content_client_.set_allow_pack_file_load(false);
}
}
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