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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"
#if defined(OS_LINUX)
#include <dlfcn.h>
#endif
#include "libcef/browser/browser_message_loop.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_reporting.h"
#include "libcef/common/extensions/extensions_util.h"
#include "libcef/renderer/content_renderer_client.h"
#include "libcef/utility/content_utility_client.h"
#include "base/at_exit.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/path_service.h"
#include "base/stl_util.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/browser/browser_process.h"
#include "chrome/child/pdf_child_init.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/chrome_paths_internal.h"
#include "chrome/common/chrome_switches.h"
#include "components/content_settings/core/common/content_settings_pattern.h"
#include "components/viz/common/features.h"
#include "content/browser/browser_process_sub_thread.h"
#include "content/browser/scheduler/browser_task_executor.h"
#include "content/public/browser/browser_main_runner.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/common/content_features.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/main_function_params.h"
#include "extensions/common/constants.h"
#include "ipc/ipc_buildflags.h"
#include "pdf/pdf_ppapi.h"
#include "services/network/public/cpp/features.h"
#include "services/service_manager/sandbox/switches.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 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)
#include "libcef/common/cef_message_generator.h"
#endif
#if defined(OS_WIN)
#include <Objbase.h>
#include "base/win/registry.h"
#endif
#if defined(OS_MACOSX)
#include "base/mac/bundle_locations.h"
#include "base/mac/foundation_util.h"
#include "content/public/common/content_paths.h"
#include "libcef/common/util_mac.h"
#endif
#if defined(OS_LINUX)
#include "base/environment.h"
#include "base/nix/xdg_util.h"
#endif
namespace {
const char* const kNonWildcardDomainNonPortSchemes[] = {
extensions::kExtensionScheme};
const size_t kNonWildcardDomainNonPortSchemesSize =
base::size(kNonWildcardDomainNonPortSchemes);
#if defined(OS_MACOSX)
base::FilePath GetResourcesFilePath() {
return util_mac::GetFrameworkResourcesDirectory();
}
// Use a "~/Library/Logs/<app name>_debug.log" file where <app name> is the name
// of the running executable.
base::FilePath GetDefaultLogFile() {
std::string exe_name = util_mac::GetMainProcessPath().BaseName().value();
return base::mac::GetUserLibraryPath()
.Append(FILE_PATH_LITERAL("Logs"))
.Append(FILE_PATH_LITERAL(exe_name + "_debug.log"));
}
void OverrideFrameworkBundlePath() {
base::FilePath framework_path = util_mac::GetFrameworkDirectory();
DCHECK(!framework_path.empty());
base::mac::SetOverrideFrameworkBundlePath(framework_path);
}
void OverrideOuterBundlePath() {
base::FilePath bundle_path = util_mac::GetMainBundlePath();
DCHECK(!bundle_path.empty());
base::mac::SetOverrideOuterBundlePath(bundle_path);
}
void OverrideBaseBundleID() {
std::string bundle_id = util_mac::GetMainBundleID();
DCHECK(!bundle_id.empty());
base::mac::SetBaseBundleID(bundle_id.c_str());
}
void OverrideChildProcessPath() {
base::FilePath child_process_path =
base::CommandLine::ForCurrentProcess()->GetSwitchValuePath(
switches::kBrowserSubprocessPath);
if (child_process_path.empty()) {
child_process_path = util_mac::GetChildProcessPath();
DCHECK(!child_process_path.empty());
}
// Used by ChildProcessHost::GetChildPath and PlatformCrashpadInitialization.
base::PathService::Override(content::CHILD_PROCESS_EXE, child_process_path);
}
#else // !defined(OS_MACOSX)
base::FilePath GetResourcesFilePath() {
base::FilePath pak_dir;
base::PathService::Get(base::DIR_ASSETS, &pak_dir);
return pak_dir;
}
// Use a "debug.log" file in the running executable's directory.
base::FilePath GetDefaultLogFile() {
base::FilePath log_path;
base::PathService::Get(base::DIR_EXE, &log_path);
return log_path.Append(FILE_PATH_LITERAL("debug.log"));
}
#endif // !defined(OS_MACOSX)
#if defined(OS_WIN)
// Gets the Flash path if installed on the system.
bool GetSystemFlashFilename(base::FilePath* out_path) {
const wchar_t kPepperFlashRegistryRoot[] =
L"SOFTWARE\\Macromedia\\FlashPlayerPepper";
const wchar_t kFlashPlayerPathValueName[] = L"PlayerPath";
base::win::RegKey path_key(HKEY_LOCAL_MACHINE, kPepperFlashRegistryRoot,
KEY_READ);
base::string16 path_str;
if (FAILED(path_key.ReadValue(kFlashPlayerPathValueName, &path_str)))
return false;
*out_path = base::FilePath(path_str);
return true;
}
#elif defined(OS_MACOSX)
const base::FilePath::CharType kPepperFlashSystemBaseDirectory[] =
FILE_PATH_LITERAL("Internet Plug-Ins/PepperFlashPlayer");
#endif
void OverridePepperFlashSystemPluginPath() {
base::FilePath plugin_filename;
#if defined(OS_WIN)
if (!GetSystemFlashFilename(&plugin_filename))
return;
#elif defined(OS_MACOSX)
if (!util_mac::GetLocalLibraryDirectory(&plugin_filename))
return;
plugin_filename = plugin_filename.Append(kPepperFlashSystemBaseDirectory)
.Append(chrome::kPepperFlashPluginFilename);
#else
// A system plugin is not available on other platforms.
return;
#endif
if (!plugin_filename.empty()) {
base::PathService::Override(chrome::FILE_PEPPER_FLASH_SYSTEM_PLUGIN,
plugin_filename);
}
}
#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) {
std::unique_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 (!base::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 (!base::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 (base::PathService::Get(base::DIR_TEMP, &result))
return result;
NOTREACHED();
return result;
}
bool GetDefaultDownloadDirectory(base::FilePath* result) {
base::FilePath cur;
if (!chrome::GetUserDownloadsDirectory(&cur))
return false;
*result = cur;
return true;
}
bool GetDefaultDownloadSafeDirectory(base::FilePath* result) {
base::FilePath cur;
#if defined(OS_WIN) || defined(OS_LINUX)
if (!chrome::GetUserDownloadsDirectorySafe(&cur))
return false;
#else
GetDefaultDownloadDirectory(&cur);
#endif
*result = cur;
return true;
}
// Returns true if |scale_factor| is supported by this platform.
// Same as ui::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();
}
#if defined(OS_LINUX)
// Look for binary files (*.bin, *.dat, *.pak, chrome-sandbox, libGLESv2.so,
// libEGL.so, locales/*.pak, swiftshader/*.so) next to libcef instead of the exe
// on Linux. This is already the default on Windows.
void OverrideAssetPath() {
Dl_info dl_info;
if (dladdr(reinterpret_cast<const void*>(&OverrideAssetPath), &dl_info)) {
base::FilePath path = base::FilePath(dl_info.dli_fname).DirName();
base::PathService::Override(base::DIR_ASSETS, path);
}
}
#endif
} // namespace
// Used to run the UI on a separate thread.
class CefUIThread : public base::PlatformThread::Delegate {
public:
explicit CefUIThread(base::OnceClosure setup_callback)
: setup_callback_(std::move(setup_callback)) {}
~CefUIThread() override { Stop(); }
void Start() {
base::AutoLock lock(thread_lock_);
bool success = base::PlatformThread::CreateWithPriority(
0, this, &thread_, base::ThreadPriority::NORMAL);
if (!success) {
LOG(FATAL) << "failed to UI create thread";
}
}
void Stop() {
base::AutoLock lock(thread_lock_);
if (!stopping_) {
stopping_ = true;
base::PostTaskWithTraits(
FROM_HERE, {content::BrowserThread::UI},
base::BindOnce(&CefUIThread::ThreadQuitHelper, Unretained(this)));
}
// Can't join if the |thread_| is either already gone or is non-joinable.
if (thread_.is_null())
return;
base::PlatformThread::Join(thread_);
thread_ = base::PlatformThreadHandle();
stopping_ = false;
}
bool WaitUntilThreadStarted() const {
DCHECK(owning_sequence_checker_.CalledOnValidSequence());
start_event_.Wait();
return true;
}
void InitializeBrowserRunner(
const content::MainFunctionParams& main_function_params) {
// Use our own browser process runner.
browser_runner_ = content::BrowserMainRunner::Create();
// Initialize browser process state. Uses the current thread's message loop.
int exit_code = browser_runner_->Initialize(main_function_params);
CHECK_EQ(exit_code, -1);
}
protected:
void ThreadMain() override {
base::PlatformThread::SetName("CefUIThread");
#if defined(OS_WIN)
// Initializes the COM library on the current thread.
CoInitialize(NULL);
#endif
start_event_.Signal();
std::move(setup_callback_).Run();
base::RunLoop run_loop;
run_loop_ = &run_loop;
run_loop.Run();
browser_runner_->Shutdown();
browser_runner_.reset(NULL);
content::BrowserTaskExecutor::Shutdown();
// Run exit callbacks on the UI thread to avoid sequence check failures.
base::AtExitManager::ProcessCallbacksNow();
#if defined(OS_WIN)
// Closes the COM library on the current thread. CoInitialize must
// be balanced by a corresponding call to CoUninitialize.
CoUninitialize();
#endif
run_loop_ = nullptr;
}
void ThreadQuitHelper() {
DCHECK(run_loop_);
run_loop_->QuitWhenIdle();
}
std::unique_ptr<content::BrowserMainRunner> browser_runner_;
base::OnceClosure setup_callback_;
bool stopping_ = false;
// The thread's handle.
base::PlatformThreadHandle thread_;
mutable base::Lock thread_lock_; // Protects |thread_|.
base::RunLoop* run_loop_ = nullptr;
mutable base::WaitableEvent start_event_;
// This class is not thread-safe, use this to verify access from the owning
// sequence of the Thread.
base::SequenceChecker owning_sequence_checker_;
};
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();
#if defined(OS_LINUX)
OverrideAssetPath();
#endif
}
CefMainDelegate::~CefMainDelegate() {}
void CefMainDelegate::PreCreateMainMessageLoop() {
InitMessagePumpFactoryForUI();
}
bool CefMainDelegate::BasicStartupComplete(int* exit_code) {
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
std::string process_type =
command_line->GetSwitchValueASCII(switches::kProcessType);
#if defined(OS_POSIX)
// Read the crash configuration file. Platforms using Breakpad also add a
// command-line switch. On Windows this is done from chrome_elf.
crash_reporting::BasicStartupComplete(command_line);
#endif
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();
}
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 defined(OS_MACOSX)
if (settings.framework_dir_path.length > 0) {
base::FilePath file_path =
base::FilePath(CefString(&settings.framework_dir_path));
if (!file_path.empty())
command_line->AppendSwitchPath(switches::kFrameworkDirPath, file_path);
}
#endif
if (no_sandbox)
command_line->AppendSwitch(service_manager::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");
}
base::FilePath log_file;
bool has_log_file_cmdline = false;
if (settings.log_file.length > 0)
log_file = base::FilePath(CefString(&settings.log_file));
if (log_file.empty() && command_line->HasSwitch(switches::kLogFile)) {
log_file = command_line->GetSwitchValuePath(switches::kLogFile);
if (!log_file.empty())
has_log_file_cmdline = true;
}
if (log_file.empty())
log_file = GetDefaultLogFile();
DCHECK(!log_file.empty());
if (!has_log_file_cmdline)
command_line->AppendSwitchPath(switches::kLogFile, log_file);
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_FATAL:
log_severity = switches::kLogSeverity_Fatal;
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::NumberToString(settings.remote_debugging_port));
}
if (settings.uncaught_exception_stack_size > 0) {
command_line->AppendSwitchASCII(
switches::kUncaughtExceptionStackSize,
base::NumberToString(settings.uncaught_exception_stack_size));
}
std::vector<std::string> disable_features;
if (network::features::kOutOfBlinkCors.default_state ==
base::FEATURE_ENABLED_BY_DEFAULT) {
// TODO: Add support for out-of-Blink CORS (see issue #2716)
disable_features.push_back(network::features::kOutOfBlinkCors.name);
}
if (features::kMimeHandlerViewInCrossProcessFrame.default_state ==
base::FEATURE_ENABLED_BY_DEFAULT) {
// TODO: Add support for cross-process mime handler view (see issue #2727)
disable_features.push_back(
features::kMimeHandlerViewInCrossProcessFrame.name);
}
if (!disable_features.empty()) {
DCHECK(!base::FeatureList::GetInstance());
std::string disable_features_str =
command_line->GetSwitchValueASCII(switches::kDisableFeatures);
for (auto feature_str : disable_features) {
if (!disable_features_str.empty())
disable_features_str += ",";
disable_features_str += feature_str;
}
command_line->AppendSwitchASCII(switches::kDisableFeatures,
disable_features_str);
}
}
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);
DCHECK(!log_file.empty());
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 (base::LowerCaseEqualsASCII(log_severity_str,
switches::kLogSeverity_Verbose)) {
log_severity = logging::LOG_VERBOSE;
} else if (base::LowerCaseEqualsASCII(log_severity_str,
switches::kLogSeverity_Warning)) {
log_severity = logging::LOG_WARNING;
} else if (base::LowerCaseEqualsASCII(log_severity_str,
switches::kLogSeverity_Error)) {
log_severity = logging::LOG_ERROR;
} else if (base::LowerCaseEqualsASCII(log_severity_str,
switches::kLogSeverity_Fatal)) {
log_severity = logging::LOG_FATAL;
} else if (base::LowerCaseEqualsASCII(log_severity_str,
switches::kLogSeverity_Disable)) {
log_severity = LOGSEVERITY_DISABLE;
}
}
if (log_severity == LOGSEVERITY_DISABLE) {
log_settings.logging_dest = logging::LOG_NONE;
// By default, ERROR and FATAL messages will always be output to stderr due
// to the kAlwaysPrintErrorLevel value in base/logging.cc. We change the log
// level here so that only FATAL messages are output.
logging::SetMinLogLevel(logging::LOG_FATAL);
} else {
log_settings.logging_dest = logging::LOG_TO_ALL;
logging::SetMinLogLevel(log_severity);
}
logging::InitLogging(log_settings);
ContentSettingsPattern::SetNonWildcardDomainNonPortSchemes(
kNonWildcardDomainNonPortSchemes, kNonWildcardDomainNonPortSchemesSize);
content::SetContentClient(&content_client_);
#if defined(OS_MACOSX)
OverrideFrameworkBundlePath();
OverrideOuterBundlePath();
OverrideBaseBundleID();
#endif
return false;
}
void CefMainDelegate::PreSandboxStartup() {
const base::CommandLine* command_line =
base::CommandLine::ForCurrentProcess();
const std::string& process_type =
command_line->GetSwitchValueASCII(switches::kProcessType);
if (process_type.empty()) {
// Only override these paths when executing the main process.
#if defined(OS_MACOSX)
OverrideChildProcessPath();
#endif
OverridePepperFlashSystemPluginPath();
base::FilePath dir_default_download;
base::FilePath dir_default_download_safe;
if (GetDefaultDownloadDirectory(&dir_default_download)) {
base::PathService::Override(chrome::DIR_DEFAULT_DOWNLOADS,
dir_default_download);
}
if (GetDefaultDownloadSafeDirectory(&dir_default_download_safe)) {
base::PathService::Override(chrome::DIR_DEFAULT_DOWNLOADS_SAFE,
dir_default_download_safe);
}
const base::FilePath& user_data_path = GetUserDataPath();
base::PathService::Override(chrome::DIR_USER_DATA, user_data_path);
// Path used for crash dumps.
base::PathService::Override(chrome::DIR_CRASH_DUMPS, user_data_path);
// Path used for spell checking dictionary files.
base::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);
// Initialize crash reporting state for this process/module.
// chrome::DIR_CRASH_DUMPS must be configured before calling this function.
crash_reporting::PreSandboxStartup(*command_line, process_type);
InitializeResourceBundle();
InitializePDF();
}
void CefMainDelegate::SandboxInitialized(const std::string& process_type) {
CefContentClient::SetPDFEntryFunctions(chrome_pdf::PPP_GetInterface,
chrome_pdf::PPP_InitializeModule,
chrome_pdf::PPP_ShutdownModule);
}
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_ = 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 {
// Running on the separate UI thread.
DCHECK(ui_thread_);
ui_thread_->InitializeBrowserRunner(main_function_params);
}
return 0;
}
return -1;
}
bool CefMainDelegate::CreateUIThread(base::OnceClosure setup_callback) {
DCHECK(!ui_thread_);
ui_thread_.reset(new CefUIThread(std::move(setup_callback)));
ui_thread_->Start();
ui_thread_->WaitUntilThreadStarted();
InitMessagePumpFactoryForUI();
return true;
}
void CefMainDelegate::ProcessExiting(const std::string& process_type) {
ui::ResourceBundle::CleanupSharedInstance();
}
#if defined(OS_LINUX)
void CefMainDelegate::ZygoteForked() {
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
const std::string& process_type =
command_line->GetSwitchValueASCII(switches::kProcessType);
// Initialize crash reporting state for the newly forked process.
crash_reporting::ZygoteForked(command_line, 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, cef_extensions_pak_file, devtools_pak_file,
locales_dir;
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())
base::PathService::Override(chrome::DIR_RESOURCES, resources_dir);
if (!content_client_.pack_loading_disabled()) {
if (!resources_dir.empty()) {
CHECK(resources_dir.IsAbsolute());
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"));
cef_extensions_pak_file =
resources_dir.Append(FILE_PATH_LITERAL("cef_extensions.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())
base::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);
if (!loaded_locale.empty() && g_browser_process)
g_browser_process->SetApplicationLocale(loaded_locale);
ui::ResourceBundle& resource_bundle = ui::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 (extensions::ExtensionsEnabled() ||
!command_line->HasSwitch(switches::kDisablePlugins)) {
if (base::PathExists(cef_extensions_pak_file)) {
resource_bundle.AddDataPackFromPath(cef_extensions_pak_file,
ui::SCALE_FACTOR_NONE);
} else {
LOG(ERROR) << "Could not load cef_extensions.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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