| // 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> |
| #include <shlwapi.h> |
| |
| #include "base/command_line.h" |
| #include "base/compiler_specific.h" |
| #include "base/debug/trace_event.h" |
| #include "base/environment.h" |
| #include "base/file_version_info.h" |
| #include "base/lazy_instance.h" |
| #include "base/logging.h" |
| #include "base/memory/scoped_ptr.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/version.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_command_line_win.h" |
| #include "chrome/app/client_util.h" |
| #include "chrome/app/image_pre_reader_win.h" |
| #include "chrome/chrome_watcher/chrome_watcher_main_api.h" |
| #include "chrome/common/chrome_constants.h" |
| #include "chrome/common/chrome_result_codes.h" |
| #include "chrome/common/chrome_switches.h" |
| #include "chrome/common/env_vars.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/util_constants.h" |
| #include "components/browser_watcher/watcher_client_win.h" |
| #include "components/crash/app/breakpad_win.h" |
| #include "components/crash/app/crash_reporter_client.h" |
| #include "components/metrics/client_info.h" |
| #include "content/public/app/startup_helper_win.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)(); |
| |
| base::LazyInstance<chrome::ChromeCrashReporterClient>::Leaky |
| g_chrome_crash_client = LAZY_INSTANCE_INITIALIZER; |
| |
| // 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()); |
| |
| if (pre_read) { |
| // 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; |
| size_t percent = 100; |
| ImagePreReader::PartialPreReadImage(module.value().c_str(), percent, |
| kStepSize); |
| } |
| |
| 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); |
| } |
| |
| bool InMetroMode() { |
| return (wcsstr( |
| ::GetCommandLineW(), L" -ServerName:DefaultBrowserServer") != nullptr); |
| } |
| |
| typedef int (*InitMetro)(); |
| |
| // Returns the directory in which the currently running executable resides. |
| base::FilePath GetExecutableDir() { |
| base::char16 path[MAX_PATH]; |
| ::GetModuleFileNameW(nullptr, path, MAX_PATH); |
| return base::FilePath(path).DirName(); |
| } |
| |
| } // namespace |
| |
| base::string16 GetCurrentModuleVersion() { |
| scoped_ptr<FileVersionInfo> file_version_info( |
| FileVersionInfo::CreateFileVersionInfoForCurrentModule()); |
| if (file_version_info.get()) { |
| base::string16 version_string(file_version_info->file_version()); |
| if (Version(base::UTF16ToASCII(version_string)).IsValid()) |
| return version_string; |
| } |
| return base::string16(); |
| } |
| |
| //============================================================================= |
| |
| MainDllLoader::MainDllLoader() |
| : dll_(nullptr), metro_mode_(InMetroMode()) { |
| } |
| |
| 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 |
| } |
| |
| const bool pre_read = !metro_mode_; |
| base::FilePath module_dir = GetExecutableDir(); |
| *module = module_dir.Append(dll_name); |
| HMODULE dll = LoadModuleWithDirectory(*module, pre_read); |
| if (!dll) { |
| base::string16 version_string(GetCurrentModuleVersion()); |
| if (version_string.empty()) { |
| LOG(ERROR) << "No valid Chrome version found"; |
| return nullptr; |
| } |
| *version = version_string; |
| *module = module_dir.Append(version_string).Append(dll_name); |
| 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") { |
| base::win::ScopedHandle parent_process = |
| InterpretChromeWatcherCommandLine(cmd_line); |
| if (!parent_process.IsValid()) |
| return chrome::RESULT_CODE_UNSUPPORTED_PARAM; |
| |
| // 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()); |
| } |
| |
| // Initialize the sandbox services. |
| sandbox::SandboxInterfaceInfo sandbox_info = {0}; |
| content::InitializeSandboxInfo(&sandbox_info); |
| |
| crash_reporter::SetCrashReporterClient(g_chrome_crash_client.Pointer()); |
| bool exit_now = true; |
| if (process_type_.empty()) { |
| if (breakpad::ShowRestartDialogIfCrashed(&exit_now)) { |
| // We restarted because of a previous crash. Ask user if we should |
| // Relaunch. Only for the browser process. See crbug.com/132119. |
| if (exit_now) |
| return content::RESULT_CODE_NORMAL_EXIT; |
| } |
| } |
| breakpad::InitCrashReporter(process_type_); |
| |
| 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); |
| return OnBeforeExit(rc, file); |
| } |
| |
| 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: |
| void OnBeforeLaunch(const std::string& process_type, |
| const base::FilePath& dll_path) override; |
| int OnBeforeExit(int return_code, const base::FilePath& dll_path) override; |
| }; |
| |
| 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 (g_chrome_crash_client.Get().GetCollectStatsConsent()) { |
| base::char16 exe_path[MAX_PATH]; |
| ::GetModuleFileNameW(nullptr, exe_path, arraysize(exe_path)); |
| |
| browser_watcher::WatcherClient watcher_client(base::Bind( |
| &GenerateChromeWatcherCommandLine, base::FilePath(exe_path))); |
| watcher_client.LaunchWatcher(); |
| } |
| } |
| } |
| |
| 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); |
| } |
| 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 |
| } |