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cef/libcef/common/chrome/chrome_main_delegate_cef.cc

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// Copyright 2020 The Chromium Embedded Framework Authors.
// Portions copyright 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 "cef/libcef/common/chrome/chrome_main_delegate_cef.h"
#include <tuple>
#include "base/base_switches.h"
#include "base/command_line.h"
#include "base/lazy_instance.h"
#include "base/path_service.h"
#include "base/threading/threading_features.h"
#include "cef/libcef/browser/chrome/chrome_browser_context.h"
#include "cef/libcef/browser/chrome/chrome_content_browser_client_cef.h"
#include "cef/libcef/common/cef_switches.h"
#include "cef/libcef/common/command_line_impl.h"
#include "cef/libcef/common/crash_reporting.h"
#include "cef/libcef/common/resource_util.h"
#include "cef/libcef/renderer/chrome/chrome_content_renderer_client_cef.h"
#include "chrome/browser/metrics/chrome_feature_list_creator.h"
#include "chrome/browser/policy/chrome_browser_policy_connector.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/pref_names.h"
#include "components/embedder_support/switches.h"
#include "content/public/common/content_switches.h"
#include "sandbox/policy/switches.h"
#include "third_party/blink/public/common/switches.h"
#include "ui/base/ui_base_paths.h"
#include "ui/base/ui_base_switches.h"
#if BUILDFLAG(IS_MAC)
#include "cef/libcef/common/util_mac.h"
#elif BUILDFLAG(IS_POSIX)
#include "cef/libcef/common/util_linux.h"
#endif
namespace {
base::LazyInstance<ChromeContentRendererClientCef>::DestructorAtExit
g_chrome_content_renderer_client = LAZY_INSTANCE_INITIALIZER;
void InitLogging(const base::CommandLine* command_line) {
logging::LogSeverity log_severity = logging::LOGGING_INFO;
std::string log_severity_str =
command_line->GetSwitchValueASCII(switches::kLogSeverity);
if (!log_severity_str.empty()) {
if (base::EqualsCaseInsensitiveASCII(log_severity_str,
switches::kLogSeverity_Verbose)) {
log_severity = logging::LOGGING_VERBOSE;
} else if (base::EqualsCaseInsensitiveASCII(
log_severity_str, switches::kLogSeverity_Warning)) {
log_severity = logging::LOGGING_WARNING;
} else if (base::EqualsCaseInsensitiveASCII(log_severity_str,
switches::kLogSeverity_Error)) {
log_severity = logging::LOGGING_ERROR;
} else if (base::EqualsCaseInsensitiveASCII(log_severity_str,
switches::kLogSeverity_Fatal)) {
log_severity = logging::LOGGING_FATAL;
} else if (base::EqualsCaseInsensitiveASCII(
log_severity_str, switches::kLogSeverity_Disable)) {
log_severity = LOGSEVERITY_DISABLE;
}
}
if (log_severity == LOGSEVERITY_DISABLE) {
// 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::LOGGING_FATAL);
} else {
logging::SetMinLogLevel(log_severity);
}
// Customization of items automatically prepended to log lines.
std::string log_items_str =
command_line->GetSwitchValueASCII(switches::kLogItems);
if (!log_items_str.empty()) {
bool enable_log_of_process_id, enable_log_of_thread_id,
enable_log_of_time_stamp, enable_log_of_tick_count;
enable_log_of_process_id = enable_log_of_thread_id =
enable_log_of_time_stamp = enable_log_of_tick_count = false;
for (const auto& cur_item_to_log :
base::SplitStringPiece(log_items_str, ",", base::TRIM_WHITESPACE,
base::SPLIT_WANT_NONEMPTY)) {
// if "none" mode is present, all items are disabled.
if (base::EqualsCaseInsensitiveASCII(cur_item_to_log,
switches::kLogItems_None)) {
enable_log_of_process_id = enable_log_of_thread_id =
enable_log_of_time_stamp = enable_log_of_tick_count = false;
break;
} else if (base::EqualsCaseInsensitiveASCII(cur_item_to_log,
switches::kLogItems_PId)) {
enable_log_of_process_id = true;
} else if (base::EqualsCaseInsensitiveASCII(cur_item_to_log,
switches::kLogItems_TId)) {
enable_log_of_thread_id = true;
} else if (base::EqualsCaseInsensitiveASCII(
cur_item_to_log, switches::kLogItems_TimeStamp)) {
enable_log_of_time_stamp = true;
} else if (base::EqualsCaseInsensitiveASCII(
cur_item_to_log, switches::kLogItems_TickCount)) {
enable_log_of_tick_count = true;
}
}
logging::SetLogItems(enable_log_of_process_id, enable_log_of_thread_id,
enable_log_of_time_stamp, enable_log_of_tick_count);
}
}
} // namespace
ChromeMainDelegateCef::ChromeMainDelegateCef(CefMainRunnerHandler* runner,
CefSettings* settings,
CefRefPtr<CefApp> application)
: ChromeMainDelegate(base::TimeTicks::Now()),
runner_(runner),
settings_(settings),
application_(application) {
#if BUILDFLAG(IS_LINUX)
resource_util::OverrideAssetPath();
#endif
}
ChromeMainDelegateCef::~ChromeMainDelegateCef() = default;
std::optional<int> ChromeMainDelegateCef::BasicStartupComplete() {
// Returns no value if startup should proceed.
auto result = ChromeMainDelegate::BasicStartupComplete();
if (result.has_value()) {
return result;
}
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
#if BUILDFLAG(IS_POSIX)
// Read the crash configuration file. On Windows this is done from chrome_elf.
crash_reporting::BasicStartupComplete(command_line);
#endif
const std::string& process_type =
command_line->GetSwitchValueASCII(switches::kProcessType);
if (process_type.empty()) {
// In the browser process. Populate the global command-line object.
// TODO(chrome-runtime): Copy more settings from AlloyMainDelegate and test.
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 BUILDFLAG(IS_WIN)
// The sandbox is not supported when using a separate subprocess
// executable on Windows.
no_sandbox = true;
#endif
}
}
#if BUILDFLAG(IS_MAC)
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);
}
}
if (settings_->main_bundle_path.length > 0) {
base::FilePath file_path =
base::FilePath(CefString(&settings_->main_bundle_path));
if (!file_path.empty()) {
command_line->AppendSwitchPath(switches::kMainBundlePath, file_path);
}
}
#endif
if (no_sandbox) {
command_line->AppendSwitch(sandbox::policy::switches::kNoSandbox);
}
if (settings_->user_agent.length > 0) {
command_line->AppendSwitchASCII(
embedder_support::kUserAgent,
CefString(&settings_->user_agent).ToString());
} else if (settings_->user_agent_product.length > 0) {
command_line->AppendSwitchASCII(
switches::kUserAgentProductAndVersion,
CefString(&settings_->user_agent_product).ToString());
}
if (settings_->locale.length > 0) {
command_line->AppendSwitchASCII(switches::kLang,
CefString(&settings_->locale).ToString());
} else if (!command_line->HasSwitch(switches::kLang)) {
command_line->AppendSwitchASCII(switches::kLang, "en-US");
}
if (!command_line->HasSwitch(switches::kLogFile) &&
settings_->log_file.length > 0) {
auto log_file = base::FilePath(CefString(&settings_->log_file));
command_line->AppendSwitchPath(switches::kLogFile, log_file);
}
if (!command_line->HasSwitch(switches::kLogSeverity) &&
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 (!command_line->HasSwitch(switches::kLogItems) &&
settings_->log_items != LOG_ITEMS_DEFAULT) {
std::string log_items_str;
if (settings_->log_items == LOG_ITEMS_NONE) {
log_items_str = std::string(switches::kLogItems_None);
} else {
std::vector<std::string_view> added_items;
if (settings_->log_items & LOG_ITEMS_FLAG_PROCESS_ID) {
added_items.emplace_back(switches::kLogItems_PId);
}
if (settings_->log_items & LOG_ITEMS_FLAG_THREAD_ID) {
added_items.emplace_back(switches::kLogItems_TId);
}
if (settings_->log_items & LOG_ITEMS_FLAG_TIME_STAMP) {
added_items.emplace_back(switches::kLogItems_TimeStamp);
}
if (settings_->log_items & LOG_ITEMS_FLAG_TICK_COUNT) {
added_items.emplace_back(switches::kLogItems_TickCount);
}
if (!added_items.empty()) {
log_items_str = base::JoinString(added_items, ",");
}
}
if (!log_items_str.empty()) {
command_line->AppendSwitchASCII(switches::kLogItems, log_items_str);
}
}
if (settings_->javascript_flags.length > 0) {
command_line->AppendSwitchASCII(
blink::switches::kJavaScriptFlags,
CefString(&settings_->javascript_flags).ToString());
}
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 (!!settings_->multi_threaded_message_loop &&
base::kEnableHangWatcher.default_state ==
base::FEATURE_ENABLED_BY_DEFAULT) {
// Disable EnableHangWatcher when running with multi-threaded-message-loop
// to avoid shutdown crashes (see issue #3403).
disable_features.push_back(base::kEnableHangWatcher.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 (application_) {
// Give the application a chance to view/modify the command line.
CefRefPtr<CefCommandLineImpl> commandLinePtr(
new CefCommandLineImpl(command_line, false, false));
application_->OnBeforeCommandLineProcessing(process_type,
commandLinePtr.get());
std::ignore = commandLinePtr->Detach(nullptr);
}
// Call as early as possible.
InitLogging(command_line);
#if BUILDFLAG(IS_MAC)
util_mac::BasicStartupComplete();
#endif
return std::nullopt;
}
void ChromeMainDelegateCef::PreSandboxStartup() {
const base::CommandLine* command_line =
base::CommandLine::ForCurrentProcess();
const std::string& process_type =
command_line->GetSwitchValueASCII(switches::kProcessType);
if (process_type.empty()) {
#if BUILDFLAG(IS_MAC)
util_mac::PreSandboxStartup();
#elif BUILDFLAG(IS_POSIX)
util_linux::PreSandboxStartup();
#endif
}
// Since this may be configured via CefSettings we override the value on
// all platforms. We can't use the default implementation on macOS because
// chrome::GetDefaultUserDataDirectory expects to find the Chromium version
// number in the app bundle path.
resource_util::OverrideUserDataDir(settings_, command_line);
ChromeMainDelegate::PreSandboxStartup();
// 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);
base::FilePath resources_dir;
if (command_line->HasSwitch(switches::kResourcesDirPath)) {
resources_dir =
command_line->GetSwitchValuePath(switches::kResourcesDirPath);
}
if (resources_dir.empty()) {
resources_dir = resource_util::GetResourcesDir();
}
if (!resources_dir.empty()) {
base::PathService::Override(chrome::DIR_RESOURCES, resources_dir);
}
if (command_line->HasSwitch(switches::kLocalesDirPath)) {
const auto& locales_dir =
command_line->GetSwitchValuePath(switches::kLocalesDirPath);
if (!locales_dir.empty()) {
base::PathService::Override(ui::DIR_LOCALES, locales_dir);
}
}
#if !BUILDFLAG(IS_WIN)
// Call after InitLogging() potentially changes values in
// chrome/app/chrome_main_delegate.cc.
InitLogging(command_line);
#endif
}
void ChromeMainDelegateCef::SandboxInitialized(
const std::string& process_type) {
ChromeMainDelegate::SandboxInitialized(process_type);
#if BUILDFLAG(IS_WIN)
// Call after InitLogging() potentially changes values in
// chrome/app/chrome_main_delegate.cc.
InitLogging(base::CommandLine::ForCurrentProcess());
#endif
}
std::optional<int> ChromeMainDelegateCef::PreBrowserMain() {
// The parent ChromeMainDelegate implementation creates the NSApplication
// instance on macOS, and we intentionally don't want to do that here.
// TODO(macos): Do we need l10n_util::OverrideLocaleWithCocoaLocale()?
runner_->PreBrowserMain();
return std::nullopt;
}
std::optional<int> ChromeMainDelegateCef::PostEarlyInitialization(
InvokedIn invoked_in) {
// Configure this before ChromeMainDelegate::PostEarlyInitialization triggers
// ChromeBrowserPolicyConnector creation.
if (settings_ && settings_->chrome_policy_id.length > 0) {
policy::ChromeBrowserPolicyConnector::EnablePlatformPolicySupport(
CefString(&settings_->chrome_policy_id).ToString());
}
const auto result = ChromeMainDelegate::PostEarlyInitialization(invoked_in);
if (!result) {
const auto* invoked_in_browser =
absl::get_if<InvokedInBrowserProcess>(&invoked_in);
if (invoked_in_browser) {
// At this point local_state has been created but ownership has not yet
// been passed to BrowserProcessImpl (g_browser_process is nullptr).
auto* local_state = chrome_content_browser_client_->startup_data()
->chrome_feature_list_creator()
->local_state();
// Don't show the profile picker on startup (see issue #3440).
local_state->SetBoolean(prefs::kBrowserShowProfilePickerOnStartup, false);
}
}
return result;
}
absl::variant<int, content::MainFunctionParams>
ChromeMainDelegateCef::RunProcess(
const std::string& process_type,
content::MainFunctionParams main_function_params) {
if (process_type.empty()) {
return runner_->RunMainProcess(std::move(main_function_params));
}
return ChromeMainDelegate::RunProcess(process_type,
std::move(main_function_params));
}
#if BUILDFLAG(IS_LINUX)
void ChromeMainDelegateCef::ZygoteForked() {
ChromeMainDelegate::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 // BUILDFLAG(IS_LINUX)
content::ContentClient* ChromeMainDelegateCef::CreateContentClient() {
return &chrome_content_client_cef_;
}
content::ContentBrowserClient*
ChromeMainDelegateCef::CreateContentBrowserClient() {
// Match the logic in the parent ChromeMainDelegate implementation, but create
// our own object type.
chrome_content_browser_client_ =
std::make_unique<ChromeContentBrowserClientCef>();
return chrome_content_browser_client_.get();
}
content::ContentRendererClient*
ChromeMainDelegateCef::CreateContentRendererClient() {
return g_chrome_content_renderer_client.Pointer();
}
CefRefPtr<CefRequestContext> ChromeMainDelegateCef::GetGlobalRequestContext() {
auto browser_client = content_browser_client();
if (browser_client) {
return browser_client->request_context();
}
return nullptr;
}
CefBrowserContext* ChromeMainDelegateCef::CreateNewBrowserContext(
const CefRequestContextSettings& settings,
base::OnceClosure initialized_cb) {
auto context = new ChromeBrowserContext(settings);
context->InitializeAsync(std::move(initialized_cb));
return context;
}
scoped_refptr<base::SingleThreadTaskRunner>
ChromeMainDelegateCef::GetBackgroundTaskRunner() {
auto browser_client = content_browser_client();
if (browser_client) {
return browser_client->background_task_runner();
}
return nullptr;
}
scoped_refptr<base::SingleThreadTaskRunner>
ChromeMainDelegateCef::GetUserVisibleTaskRunner() {
auto browser_client = content_browser_client();
if (browser_client) {
return browser_client->user_visible_task_runner();
}
return nullptr;
}
scoped_refptr<base::SingleThreadTaskRunner>
ChromeMainDelegateCef::GetUserBlockingTaskRunner() {
auto browser_client = content_browser_client();
if (browser_client) {
return browser_client->user_blocking_task_runner();
}
return nullptr;
}
scoped_refptr<base::SingleThreadTaskRunner>
ChromeMainDelegateCef::GetRenderTaskRunner() {
auto renderer_client = content_renderer_client();
if (renderer_client) {
return renderer_client->render_task_runner();
}
return nullptr;
}
scoped_refptr<base::SingleThreadTaskRunner>
ChromeMainDelegateCef::GetWebWorkerTaskRunner() {
auto renderer_client = content_renderer_client();
if (renderer_client) {
return renderer_client->GetCurrentTaskRunner();
}
return nullptr;
}
ChromeContentBrowserClientCef* ChromeMainDelegateCef::content_browser_client()
const {
return static_cast<ChromeContentBrowserClientCef*>(
chrome_content_browser_client_.get());
}
ChromeContentRendererClientCef* ChromeMainDelegateCef::content_renderer_client()
const {
if (!g_chrome_content_renderer_client.IsCreated()) {
return nullptr;
}
return g_chrome_content_renderer_client.Pointer();
}
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