| // Copyright (c) 2006-2008 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 "chrome/app/breakpad.h" |
| |
| #include <windows.h> |
| #include <tchar.h> |
| |
| #include "base/base_switches.h" |
| #include "base/command_line.h" |
| #include "base/file_util.h" |
| #include "base/file_version_info.h" |
| #include "base/registry.h" |
| #include "base/string_util.h" |
| #include "base/win_util.h" |
| #include "chrome/app/google_update_client.h" |
| #include "chrome/common/env_vars.h" |
| #include "chrome/installer/util/install_util.h" |
| #include "chrome/installer/util/google_update_settings.h" |
| #include "breakpad/src/client/windows/handler/exception_handler.h" |
| |
| namespace { |
| |
| const wchar_t kGoogleUpdatePipeName[] = L"\\\\.\\pipe\\GoogleCrashServices\\"; |
| const wchar_t kChromePipeName[] = L"\\\\.\\pipe\\ChromeCrashServices"; |
| |
| // This is the well known SID for the system principal. |
| const wchar_t kSystemPrincipalSid[] =L"S-1-5-18"; |
| |
| google_breakpad::ExceptionHandler* g_breakpad = NULL; |
| |
| // Dumps the current process memory. |
| extern "C" void __declspec(dllexport) __cdecl DumpProcess() { |
| if (g_breakpad) |
| g_breakpad->WriteMinidump(); |
| } |
| |
| // Returns the custom info structure based on the dll in parameter and the |
| // process type. |
| static google_breakpad::CustomClientInfo* custom_info = NULL; |
| google_breakpad::CustomClientInfo* GetCustomInfo(const std::wstring& dll_path, |
| const std::wstring& type) { |
| scoped_ptr<FileVersionInfo> |
| version_info(FileVersionInfo::CreateFileVersionInfo(dll_path)); |
| |
| std::wstring version, product; |
| if (version_info.get()) { |
| // Get the information from the file. |
| product = version_info->product_short_name(); |
| version = version_info->product_version(); |
| if (!version_info->is_official_build()) |
| version.append(L"-devel"); |
| } else { |
| // No version info found. Make up the values. |
| product = L"Chrome"; |
| version = L"0.0.0.0-devel"; |
| } |
| |
| static google_breakpad::CustomInfoEntry ver_entry(L"ver", version.c_str()); |
| static google_breakpad::CustomInfoEntry prod_entry(L"prod", product.c_str()); |
| static google_breakpad::CustomInfoEntry plat_entry(L"plat", L"Win32"); |
| static google_breakpad::CustomInfoEntry type_entry(L"ptype", type.c_str()); |
| static google_breakpad::CustomInfoEntry entries[] = {ver_entry, |
| prod_entry, |
| plat_entry, |
| type_entry}; |
| |
| static google_breakpad::CustomClientInfo custom_info = {entries, |
| arraysize(entries)}; |
| |
| return &custom_info; |
| } |
| |
| // Contains the information needed by the worker thread. |
| struct CrashReporterInfo { |
| google_breakpad::CustomClientInfo* custom_info; |
| std::wstring dll_path; |
| std::wstring process_type; |
| }; |
| |
| // This callback is executed when the browser process has crashed, after |
| // the crash dump has been created. We need to minimize the amount of work |
| // done here since we have potentially corrupted process. Our job is to |
| // spawn another instance of chrome which will show a 'chrome has crashed' |
| // dialog. This code needs to live in the exe and thus has no access to |
| // facilities such as the i18n helpers. |
| bool DumpDoneCallback(const wchar_t*, const wchar_t*, void*, |
| EXCEPTION_POINTERS* ex_info, |
| MDRawAssertionInfo*, bool) { |
| // We set CHROME_CRASHED env var. If the CHROME_RESTART is present. |
| // This signals the child process to show the 'chrome has crashed' dialog. |
| if (!::GetEnvironmentVariableW(env_vars::kRestartInfo, NULL, 0)) |
| return true; |
| ::SetEnvironmentVariableW(env_vars::kShowRestart, L"1"); |
| // Now we just start chrome browser with the same command line. |
| STARTUPINFOW si = {sizeof(si)}; |
| PROCESS_INFORMATION pi; |
| if (::CreateProcessW(NULL, ::GetCommandLineW(), NULL, NULL, FALSE, |
| CREATE_UNICODE_ENVIRONMENT, NULL, NULL, &si, &pi)) { |
| ::CloseHandle(pi.hProcess); |
| ::CloseHandle(pi.hThread); |
| } |
| // After this return we will be terminated. The actual return value is |
| // not used at all. |
| return true; |
| } |
| |
| // Previous unhandled filter. Will be called if not null when we |
| // intercept a crash. |
| LPTOP_LEVEL_EXCEPTION_FILTER previous_filter = NULL; |
| |
| // Exception filter used when breakpad is not enabled. We just display |
| // the "Do you want to restart" message and then we call the previous filter. |
| long WINAPI ChromeExceptionFilter(EXCEPTION_POINTERS* info) { |
| DumpDoneCallback(NULL, NULL, NULL, info, NULL, false); |
| |
| if (previous_filter) |
| return previous_filter(info); |
| |
| return EXCEPTION_EXECUTE_HANDLER; |
| } |
| |
| } // namespace |
| |
| // This function is executed by the child process that DumpDoneCallback() |
| // spawned and basically just shows the 'chrome has crashed' dialog if |
| // the CHROME_CRASHED environment variable is present. |
| bool ShowRestartDialogIfCrashed(bool* exit_now) { |
| if (!::GetEnvironmentVariableW(env_vars::kShowRestart, NULL, 0)) |
| return false; |
| DWORD len = ::GetEnvironmentVariableW(env_vars::kRestartInfo, NULL, 0); |
| if (!len) |
| return false; |
| wchar_t* restart_data = new wchar_t[len + 1]; |
| ::GetEnvironmentVariableW(env_vars::kRestartInfo, restart_data, len); |
| restart_data[len] = 0; |
| // The CHROME_RESTART var contains the dialog strings separated by '|'. |
| // See PrepareRestartOnCrashEnviroment() function for details. |
| std::vector<std::wstring> dlg_strings; |
| SplitString(restart_data, L'|', &dlg_strings); |
| delete[] restart_data; |
| if (dlg_strings.size() < 3) |
| return false; |
| |
| // If the UI layout is right-to-left, we need to pass the appropriate MB_XXX |
| // flags so that an RTL message box is displayed. |
| UINT flags = MB_OKCANCEL | MB_ICONWARNING; |
| if (dlg_strings[2] == env_vars::kRtlLocale) |
| flags |= MB_RIGHT | MB_RTLREADING; |
| |
| // Show the dialog now. It is ok if another chrome is started by the |
| // user since we have not initialized the databases. |
| *exit_now = (IDOK != ::MessageBoxW(NULL, dlg_strings[1].c_str(), |
| dlg_strings[0].c_str(), flags)); |
| return true; |
| } |
| |
| static DWORD __stdcall InitCrashReporterThread(void* param) { |
| CrashReporterInfo* info = reinterpret_cast<CrashReporterInfo*>(param); |
| |
| // GetCustomInfo can take a few milliseconds to get the file information, so |
| // we do it here so it can run in a separate thread. |
| info->custom_info = GetCustomInfo(info->dll_path, info->process_type); |
| |
| CommandLine command; |
| bool full_dump = command.HasSwitch(switches::kFullMemoryCrashReport); |
| bool use_crash_service = command.HasSwitch(switches::kNoErrorDialogs) || |
| GetEnvironmentVariable(L"CHROME_HEADLESS", NULL, 0); |
| |
| google_breakpad::ExceptionHandler::MinidumpCallback callback = NULL; |
| |
| if (info->process_type == L"browser") { |
| // We install the post-dump callback only for the browser process. It |
| // spawns a new browser process. |
| callback = &DumpDoneCallback; |
| } |
| |
| std::wstring pipe_name; |
| if (use_crash_service) { |
| // Crash reporting is done by crash_service.exe. |
| pipe_name = kChromePipeName; |
| } else { |
| // We want to use the Google Update crash reporting. We need to check if the |
| // user allows it first. |
| if (!GoogleUpdateSettings::GetCollectStatsConsent()) { |
| // The user did not allow Google Update to send crashes, we need to use |
| // our default crash handler instead, but only for the browser process. |
| if (callback) |
| InitDefaultCrashCallback(); |
| return 0; |
| } |
| |
| // Build the pipe name. It can be either: |
| // System-wide install: "NamedPipe\GoogleCrashServices\S-1-5-18" |
| // Per-user install: "NamedPipe\GoogleCrashServices\<user SID>" |
| std::wstring user_sid; |
| if (InstallUtil::IsPerUserInstall(info->dll_path.c_str())) { |
| if (!win_util::GetUserSidString(&user_sid)) { |
| delete info; |
| return -1; |
| } |
| } else { |
| user_sid = kSystemPrincipalSid; |
| } |
| |
| pipe_name = kGoogleUpdatePipeName; |
| pipe_name += user_sid; |
| } |
| |
| // Get the alternate dump directory. We use the temp path. |
| wchar_t temp_dir[MAX_PATH] = {0}; |
| ::GetTempPathW(MAX_PATH, temp_dir); |
| |
| MINIDUMP_TYPE dump_type = full_dump ? MiniDumpWithFullMemory : MiniDumpNormal; |
| |
| g_breakpad = new google_breakpad::ExceptionHandler(temp_dir, NULL, callback, |
| NULL, google_breakpad::ExceptionHandler::HANDLER_ALL, |
| dump_type, pipe_name.c_str(), info->custom_info); |
| |
| if (!g_breakpad->IsOutOfProcess()) { |
| // The out-of-process handler is unavailable. |
| ::SetEnvironmentVariable(env_vars::kNoOOBreakpad, |
| info->process_type.c_str()); |
| } else { |
| // Tells breakpad to handle breakpoint and single step exceptions. |
| // This might break JIT debuggers, but at least it will always |
| // generate a crashdump for these exceptions. |
| g_breakpad->set_handle_debug_exceptions(true); |
| } |
| |
| delete info; |
| return 0; |
| } |
| |
| void InitDefaultCrashCallback() { |
| previous_filter = SetUnhandledExceptionFilter(ChromeExceptionFilter); |
| } |
| |
| void InitCrashReporter(std::wstring dll_path) { |
| CommandLine command; |
| if (!command.HasSwitch(switches::kDisableBreakpad)) { |
| // Disable the message box for assertions. |
| _CrtSetReportMode(_CRT_ASSERT, 0); |
| |
| // Query the custom_info now because if we do it in the thread it's going to |
| // fail in the sandbox. The thread will delete this object. |
| CrashReporterInfo* info = new CrashReporterInfo; |
| info->process_type = command.GetSwitchValue(switches::kProcessType); |
| if (info->process_type.empty()) |
| info->process_type = L"browser"; |
| |
| info->dll_path = dll_path; |
| |
| // If this is not the browser, we can't be sure that we will be able to |
| // initialize the crash_handler in another thread, so we run it right away. |
| // This is important to keep the thread for the browser process because |
| // it may take some times to initialize the crash_service process. We use |
| // the Windows worker pool to make better reuse of the thread. |
| if (info->process_type != L"browser") { |
| InitCrashReporterThread(info); |
| } else { |
| if (QueueUserWorkItem( |
| &InitCrashReporterThread, info, WT_EXECUTELONGFUNCTION) == 0) { |
| // We failed to queue to the worker pool, initialize in this thread. |
| InitCrashReporterThread(info); |
| } |
| } |
| } |
| } |
| |