| // 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 <windows.h> // NOLINT |
| #include <shlwapi.h> // NOLINT |
| #include <userenv.h> // NOLINT |
| |
| #include "chrome/app/main_dll_loader_win.h" |
| |
| #include "base/base_paths.h" |
| #include "base/base_switches.h" |
| #include "base/command_line.h" |
| #include "base/compiler_specific.h" |
| #include "base/environment.h" |
| #include "base/lazy_instance.h" |
| #include "base/logging.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/path_service.h" |
| #include "base/strings/string16.h" |
| #include "base/strings/string_util.h" |
| #include "base/strings/stringprintf.h" |
| #include "base/strings/utf_string_conversions.h" |
| #include "base/threading/platform_thread.h" |
| #include "base/trace_event/trace_event.h" |
| #include "base/win/metro.h" |
| #include "base/win/scoped_handle.h" |
| #include "base/win/windows_version.h" |
| #include "chrome/app/chrome_crash_reporter_client.h" |
| #include "chrome/app/chrome_watcher_client_win.h" |
| #include "chrome/app/chrome_watcher_command_line_win.h" |
| #include "chrome/app/file_pre_reader_win.h" |
| #include "chrome/app/kasko_client.h" |
| #include "chrome/chrome_watcher/chrome_watcher_main_api.h" |
| #include "chrome/common/chrome_constants.h" |
| #include "chrome/common/chrome_paths.h" |
| #include "chrome/common/chrome_result_codes.h" |
| #include "chrome/common/chrome_switches.h" |
| #include "chrome/common/env_vars.h" |
| #include "chrome/installer/util/browser_distribution.h" |
| #include "chrome/installer/util/google_update_constants.h" |
| #include "chrome/installer/util/google_update_settings.h" |
| #include "chrome/installer/util/install_util.h" |
| #include "chrome/installer/util/module_util_win.h" |
| #include "chrome/installer/util/util_constants.h" |
| #include "components/crash/content/app/crash_keys_win.h" |
| #include "components/crash/content/app/crash_reporter_client.h" |
| #include "components/crash/content/app/crashpad.h" |
| #include "components/startup_metric_utils/browser/pre_read_field_trial_utils_win.h" |
| #include "content/public/app/sandbox_helper_win.h" |
| #include "content/public/common/content_switches.h" |
| #include "sandbox/win/src/sandbox.h" |
| |
| namespace { |
| // The entry point signature of chrome.dll. |
| typedef int (*DLL_MAIN)(HINSTANCE, sandbox::SandboxInterfaceInfo*); |
| |
| typedef void (*RelaunchChromeBrowserWithNewCommandLineIfNeededFunc)(); |
| |
| // Loads |module| after setting the CWD to |module|'s directory. Returns a |
| // reference to the loaded module on success, or null on error. |
| HMODULE LoadModuleWithDirectory(const base::FilePath& module, bool pre_read) { |
| ::SetCurrentDirectoryW(module.DirName().value().c_str()); |
| |
| // Get pre-read options from the PreRead field trial. |
| bool trial_should_pre_read = true; |
| bool trial_should_pre_read_high_priority = false; |
| startup_metric_utils::GetPreReadOptions( |
| BrowserDistribution::GetDistribution()->GetRegistryPath(), |
| &trial_should_pre_read, &trial_should_pre_read_high_priority); |
| |
| if (pre_read && trial_should_pre_read) { |
| base::ThreadPriority previous_priority = base::ThreadPriority::NORMAL; |
| if (trial_should_pre_read_high_priority) { |
| previous_priority = base::PlatformThread::GetCurrentThreadPriority(); |
| base::PlatformThread::SetCurrentThreadPriority( |
| base::ThreadPriority::DISPLAY); |
| } |
| |
| // We pre-read the binary to warm the memory caches (fewer hard faults to |
| // page parts of the binary in). |
| const size_t kStepSize = 1024 * 1024; |
| PreReadFile(module, kStepSize); |
| |
| if (trial_should_pre_read_high_priority) |
| base::PlatformThread::SetCurrentThreadPriority(previous_priority); |
| } |
| |
| return ::LoadLibraryExW(module.value().c_str(), nullptr, |
| LOAD_WITH_ALTERED_SEARCH_PATH); |
| } |
| |
| void RecordDidRun(const base::FilePath& dll_path) { |
| bool system_level = !InstallUtil::IsPerUserInstall(dll_path); |
| GoogleUpdateSettings::UpdateDidRunState(true, system_level); |
| } |
| |
| void ClearDidRun(const base::FilePath& dll_path) { |
| bool system_level = !InstallUtil::IsPerUserInstall(dll_path); |
| GoogleUpdateSettings::UpdateDidRunState(false, system_level); |
| } |
| |
| typedef int (*InitMetro)(); |
| |
| #if defined(KASKO) |
| |
| // Returns a string containing a list of all modifiers for the loaded profile. |
| std::wstring GetProfileType() { |
| std::wstring profile_type; |
| DWORD profile_bits = 0; |
| if (::GetProfileType(&profile_bits)) { |
| static const struct { |
| DWORD bit; |
| const wchar_t* name; |
| } kBitNames[] = { |
| { PT_MANDATORY, L"mandatory" }, |
| { PT_ROAMING, L"roaming" }, |
| { PT_TEMPORARY, L"temporary" }, |
| }; |
| for (size_t i = 0; i < arraysize(kBitNames); ++i) { |
| const DWORD this_bit = kBitNames[i].bit; |
| if ((profile_bits & this_bit) != 0) { |
| profile_type.append(kBitNames[i].name); |
| profile_bits &= ~this_bit; |
| if (profile_bits != 0) |
| profile_type.append(L", "); |
| } |
| } |
| } else { |
| DWORD last_error = ::GetLastError(); |
| base::SStringPrintf(&profile_type, L"error %u", last_error); |
| } |
| return profile_type; |
| } |
| |
| #endif // KASKO |
| |
| } // namespace |
| |
| //============================================================================= |
| |
| MainDllLoader::MainDllLoader() |
| : dll_(nullptr), metro_mode_(base::win::IsMetroProcess()) { |
| } |
| |
| MainDllLoader::~MainDllLoader() { |
| } |
| |
| // Loading chrome is an interesting affair. First we try loading from the |
| // current directory to support run-what-you-compile and other development |
| // scenarios. |
| // If that fails then we look at the version resource in the current |
| // module. This is the expected path for chrome.exe browser instances in an |
| // installed build. |
| HMODULE MainDllLoader::Load(base::string16* version, base::FilePath* module) { |
| const base::char16* dll_name = nullptr; |
| if (metro_mode_) { |
| dll_name = installer::kChromeMetroDll; |
| } else if (process_type_ == "service" || process_type_.empty()) { |
| dll_name = installer::kChromeDll; |
| } else if (process_type_ == "watcher") { |
| dll_name = kChromeWatcherDll; |
| } else { |
| #if defined(CHROME_MULTIPLE_DLL) |
| dll_name = installer::kChromeChildDll; |
| #else |
| dll_name = installer::kChromeDll; |
| #endif |
| } |
| |
| *module = installer::GetModulePath(dll_name, version); |
| if (module->empty()) { |
| PLOG(ERROR) << "Cannot find module " << dll_name; |
| return nullptr; |
| } |
| const bool pre_read = !metro_mode_; |
| HMODULE dll = LoadModuleWithDirectory(*module, pre_read); |
| if (!dll) { |
| PLOG(ERROR) << "Failed to load Chrome DLL from " << module->value(); |
| return nullptr; |
| } |
| |
| DCHECK(dll); |
| return dll; |
| } |
| |
| // Launching is a matter of loading the right dll, setting the CHROME_VERSION |
| // environment variable and just calling the entry point. Derived classes can |
| // add custom code in the OnBeforeLaunch callback. |
| int MainDllLoader::Launch(HINSTANCE instance) { |
| const base::CommandLine& cmd_line = *base::CommandLine::ForCurrentProcess(); |
| process_type_ = cmd_line.GetSwitchValueASCII(switches::kProcessType); |
| |
| base::string16 version; |
| base::FilePath file; |
| |
| if (metro_mode_) { |
| HMODULE metro_dll = Load(&version, &file); |
| if (!metro_dll) |
| return chrome::RESULT_CODE_MISSING_DATA; |
| |
| InitMetro chrome_metro_main = |
| reinterpret_cast<InitMetro>(::GetProcAddress(metro_dll, "InitMetro")); |
| return chrome_metro_main(); |
| } |
| |
| if (process_type_ == "watcher") { |
| chrome::RegisterPathProvider(); |
| |
| base::win::ScopedHandle parent_process; |
| base::win::ScopedHandle on_initialized_event; |
| DWORD main_thread_id = 0; |
| if (!InterpretChromeWatcherCommandLine(cmd_line, &parent_process, |
| &main_thread_id, |
| &on_initialized_event)) { |
| return chrome::RESULT_CODE_UNSUPPORTED_PARAM; |
| } |
| |
| base::FilePath default_user_data_directory; |
| if (!PathService::Get(chrome::DIR_USER_DATA, &default_user_data_directory)) |
| return chrome::RESULT_CODE_MISSING_DATA; |
| // The actual user data directory may differ from the default according to |
| // policy and command-line arguments evaluated in the browser process. |
| // The hang monitor will simply be disabled if a window with this name is |
| // never instantiated by the browser process. Since this should be |
| // exceptionally rare it should not impact stability efforts. |
| base::string16 message_window_name = default_user_data_directory.value(); |
| |
| base::FilePath watcher_data_directory; |
| if (!PathService::Get(chrome::DIR_WATCHER_DATA, &watcher_data_directory)) |
| return chrome::RESULT_CODE_MISSING_DATA; |
| |
| base::string16 channel_name = GoogleUpdateSettings::GetChromeChannel( |
| !InstallUtil::IsPerUserInstall(cmd_line.GetProgram())); |
| |
| // Intentionally leaked. |
| HMODULE watcher_dll = Load(&version, &file); |
| if (!watcher_dll) |
| return chrome::RESULT_CODE_MISSING_DATA; |
| |
| ChromeWatcherMainFunction watcher_main = |
| reinterpret_cast<ChromeWatcherMainFunction>( |
| ::GetProcAddress(watcher_dll, kChromeWatcherDLLEntrypoint)); |
| return watcher_main(chrome::kBrowserExitCodesRegistryPath, |
| parent_process.Take(), main_thread_id, |
| on_initialized_event.Take(), |
| watcher_data_directory.value().c_str(), |
| message_window_name.c_str(), channel_name.c_str()); |
| } |
| |
| // Initialize the sandbox services. |
| sandbox::SandboxInterfaceInfo sandbox_info = {0}; |
| content::InitializeSandboxInfo(&sandbox_info); |
| |
| dll_ = Load(&version, &file); |
| if (!dll_) |
| return chrome::RESULT_CODE_MISSING_DATA; |
| |
| scoped_ptr<base::Environment> env(base::Environment::Create()); |
| env->SetVar(chrome::kChromeVersionEnvVar, base::WideToUTF8(version)); |
| |
| OnBeforeLaunch(process_type_, file); |
| DLL_MAIN chrome_main = |
| reinterpret_cast<DLL_MAIN>(::GetProcAddress(dll_, "ChromeMain")); |
| int rc = chrome_main(instance, &sandbox_info); |
| rc = OnBeforeExit(rc, file); |
| return rc; |
| } |
| |
| void MainDllLoader::RelaunchChromeBrowserWithNewCommandLineIfNeeded() { |
| if (!dll_) |
| return; |
| |
| RelaunchChromeBrowserWithNewCommandLineIfNeededFunc relaunch_function = |
| reinterpret_cast<RelaunchChromeBrowserWithNewCommandLineIfNeededFunc>( |
| ::GetProcAddress(dll_, |
| "RelaunchChromeBrowserWithNewCommandLineIfNeeded")); |
| if (!relaunch_function) { |
| LOG(ERROR) << "Could not find exported function " |
| << "RelaunchChromeBrowserWithNewCommandLineIfNeeded"; |
| } else { |
| relaunch_function(); |
| } |
| } |
| |
| //============================================================================= |
| |
| class ChromeDllLoader : public MainDllLoader { |
| protected: |
| // MainDllLoader implementation. |
| void OnBeforeLaunch(const std::string& process_type, |
| const base::FilePath& dll_path) override; |
| int OnBeforeExit(int return_code, const base::FilePath& dll_path) override; |
| |
| private: |
| scoped_ptr<ChromeWatcherClient> chrome_watcher_client_; |
| #if defined(KASKO) |
| scoped_ptr<KaskoClient> kasko_client_; |
| #endif // KASKO |
| }; |
| |
| void ChromeDllLoader::OnBeforeLaunch(const std::string& process_type, |
| const base::FilePath& dll_path) { |
| if (process_type.empty()) { |
| RecordDidRun(dll_path); |
| |
| // Launch the watcher process if stats collection consent has been granted. |
| #if defined(GOOGLE_CHROME_BUILD) |
| const bool stats_collection_consent = |
| GoogleUpdateSettings::GetCollectStatsConsent(); |
| #else |
| const bool stats_collection_consent = false; |
| #endif |
| if (stats_collection_consent) { |
| base::FilePath exe_path; |
| if (PathService::Get(base::FILE_EXE, &exe_path)) { |
| chrome_watcher_client_.reset(new ChromeWatcherClient( |
| base::Bind(&GenerateChromeWatcherCommandLine, exe_path))); |
| if (chrome_watcher_client_->LaunchWatcher()) { |
| #if defined(KASKO) |
| kasko::api::MinidumpType minidump_type = kasko::api::SMALL_DUMP_TYPE; |
| if (base::CommandLine::ForCurrentProcess()->HasSwitch( |
| switches::kFullMemoryCrashReport)) { |
| minidump_type = kasko::api::FULL_DUMP_TYPE; |
| } else { |
| // TODO(scottmg): Point this at the common global one when it's |
| // moved back into the .exe. http://crbug.com/546288. |
| ChromeCrashReporterClient chrome_crash_client; |
| bool is_per_user_install = chrome_crash_client.GetIsPerUserInstall( |
| base::FilePath(exe_path)); |
| if (chrome_crash_client.GetShouldDumpLargerDumps( |
| is_per_user_install)) { |
| minidump_type = kasko::api::LARGER_DUMP_TYPE; |
| } |
| |
| // TODO(scottmg): http://crbug.com/564329 Breakpad is no longer |
| // initialized. For now, initialize the CustomInfoEntries here so |
| // Kasko can pull them out. |
| static breakpad::CrashKeysWin crash_keys_win; |
| crash_keys_win.GetCustomInfo( |
| exe_path.value(), base::UTF8ToUTF16(process_type), |
| GetProfileType(), base::CommandLine::ForCurrentProcess(), |
| &chrome_crash_client); |
| } |
| |
| kasko_client_.reset( |
| new KaskoClient(chrome_watcher_client_.get(), minidump_type)); |
| #endif // KASKO |
| } |
| } |
| } |
| } else { |
| // Set non-browser processes up to be killed by the system after the browser |
| // goes away. The browser uses the default shutdown order, which is 0x280. |
| // Note that lower numbers here denote "kill later" and higher numbers mean |
| // "kill sooner". |
| // This gets rid of most of those unsighly sad tabs on logout and shutdown. |
| ::SetProcessShutdownParameters(0x280 - 1, SHUTDOWN_NORETRY); |
| } |
| } |
| |
| int ChromeDllLoader::OnBeforeExit(int return_code, |
| const base::FilePath& dll_path) { |
| // NORMAL_EXIT_CANCEL is used for experiments when the user cancels |
| // so we need to reset the did_run signal so omaha does not count |
| // this run as active usage. |
| if (chrome::RESULT_CODE_NORMAL_EXIT_CANCEL == return_code) { |
| ClearDidRun(dll_path); |
| } |
| |
| #if defined(KASKO) |
| kasko_client_.reset(); |
| #endif // KASKO |
| chrome_watcher_client_.reset(); |
| |
| return return_code; |
| } |
| |
| //============================================================================= |
| |
| class ChromiumDllLoader : public MainDllLoader { |
| protected: |
| void OnBeforeLaunch(const std::string& process_type, |
| const base::FilePath& dll_path) override {} |
| int OnBeforeExit(int return_code, const base::FilePath& dll_path) override { |
| return return_code; |
| } |
| }; |
| |
| MainDllLoader* MakeMainDllLoader() { |
| #if defined(GOOGLE_CHROME_BUILD) |
| return new ChromeDllLoader(); |
| #else |
| return new ChromiumDllLoader(); |
| #endif |
| } |