chrome/browser/chrome_browser_main_win.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/chrome_browser_main_win.h"
   6
   7 #include <windows.h>
   8 #include <shellapi.h>
   9
  10 #include <algorithm>
  11
  12 #include "base/command_line.h"
  13 #include "base/environment.h"
  14 #include "base/files/file_enumerator.h"
  15 #include "base/files/file_path.h"
  16 #include "base/files/file_util.h"
  17 #include "base/i18n/rtl.h"
  18 #include "base/location.h"
  19 #include "base/macros.h"
  20 #include "base/memory/scoped_ptr.h"
  21 #include "base/metrics/histogram.h"
  22 #include "base/path_service.h"
  23 #include "base/scoped_native_library.h"
  24 #include "base/strings/string_number_conversions.h"
  25 #include "base/strings/utf_string_conversions.h"
  26 #include "base/win/metro.h"
  27 #include "base/win/registry.h"
  28 #include "base/win/win_util.h"
  29 #include "base/win/windows_version.h"
  30 #include "base/win/wrapped_window_proc.h"
  31 #include "chrome/browser/browser_util_win.h"
  32 #include "chrome/browser/chrome_elf_init_win.h"
  33 #include "chrome/browser/first_run/first_run.h"
  34 #include "chrome/browser/install_verification/win/install_verification.h"
  35 #include "chrome/browser/prefs/incognito_mode_prefs.h"
  36 #include "chrome/browser/profiles/profile_info_cache.h"
  37 #include "chrome/browser/profiles/profile_shortcut_manager.h"
  38 #include "chrome/browser/shell_integration.h"
  39 #include "chrome/browser/ui/simple_message_box.h"
  40 #include "chrome/browser/ui/uninstall_browser_prompt.h"
  41 #include "chrome/chrome_watcher/chrome_watcher_main_api.h"
  42 #include "chrome/common/chrome_constants.h"
  43 #include "chrome/common/chrome_paths.h"
  44 #include "chrome/common/chrome_result_codes.h"
  45 #include "chrome/common/chrome_switches.h"
  46 #include "chrome/common/chrome_utility_messages.h"
  47 #include "chrome/common/chrome_version_info.h"
  48 #include "chrome/common/env_vars.h"
  49 #include "chrome/grit/chromium_strings.h"
  50 #include "chrome/grit/generated_resources.h"
  51 #include "chrome/installer/util/browser_distribution.h"
  52 #include "chrome/installer/util/helper.h"
  53 #include "chrome/installer/util/install_util.h"
  54 #include "chrome/installer/util/installer_util_strings.h"
  55 #include "chrome/installer/util/l10n_string_util.h"
  56 #include "chrome/installer/util/shell_util.h"
  57 #include "content/public/browser/browser_thread.h"
  58 #include "content/public/browser/utility_process_host.h"
  59 #include "content/public/browser/utility_process_host_client.h"
  60 #include "content/public/common/content_switches.h"
  61 #include "content/public/common/dwrite_font_platform_win.h"
  62 #include "content/public/common/main_function_params.h"
  63 #include "ui/base/cursor/cursor_loader_win.h"
  64 #include "ui/base/l10n/l10n_util.h"
  65 #include "ui/base/l10n/l10n_util_win.h"
  66 #include "ui/base/ui_base_switches.h"
  67 #include "ui/base/win/message_box_win.h"
  68 #include "ui/gfx/platform_font_win.h"
  69 #include "ui/gfx/switches.h"
  70 #include "ui/gfx/win/direct_write.h"
  71 #include "ui/strings/grit/app_locale_settings.h"
  72
  73 #if defined(GOOGLE_CHROME_BUILD)
  74 #include "chrome/browser/google/did_run_updater_win.h"
  75 #endif
  76
  77 #if defined(KASKO)
  78 #include "syzygy/kasko/api/reporter.h"
  79 #endif
  80
  81 namespace {
  82
  83 typedef HRESULT (STDAPICALLTYPE* RegisterApplicationRestartProc)(
  84     const wchar_t* command_line,
  85     DWORD flags);
  86
  87 void InitializeWindowProcExceptions() {
  88   // Get the breakpad pointer from chrome.exe
  89   base::win::WinProcExceptionFilter exception_filter =
  90       reinterpret_cast<base::win::WinProcExceptionFilter>(
  91           ::GetProcAddress(::GetModuleHandle(
  92                                chrome::kBrowserProcessExecutableName),
  93                            "CrashForException"));
  94   exception_filter = base::win::SetWinProcExceptionFilter(exception_filter);
  95   DCHECK(!exception_filter);
  96 }
  97
  98 // gfx::Font callbacks
  99 void AdjustUIFont(LOGFONT* logfont) {
 100   l10n_util::AdjustUIFont(logfont);
 101 }
 102
 103 int GetMinimumFontSize() {
 104   int min_font_size;
 105   base::StringToInt(l10n_util::GetStringUTF16(IDS_MINIMUM_UI_FONT_SIZE),
 106                     &min_font_size);
 107   return min_font_size;
 108 }
 109
 110 class TranslationDelegate : public installer::TranslationDelegate {
 111  public:
 112   base::string16 GetLocalizedString(int installer_string_id) override;
 113 };
 114
 115 void ExecuteFontCacheBuildTask(const base::FilePath& path) {
 116   base::WeakPtr<content::UtilityProcessHost> utility_process_host(
 117       content::UtilityProcessHost::Create(NULL, NULL)->AsWeakPtr());
 118   utility_process_host->SetName(l10n_util::GetStringUTF16(
 119       IDS_UTILITY_PROCESS_FONT_CACHE_BUILDER_NAME));
 120   utility_process_host->DisableSandbox();
 121   utility_process_host->Send(
 122       new ChromeUtilityHostMsg_BuildDirectWriteFontCache(path));
 123 }
 124
 125 #if defined(KASKO)
 126 void ObserveFailedCrashReportDirectory(const base::FilePath& path, bool error) {
 127   DCHECK(!error);
 128   if (error)
 129     return;
 130   base::FileEnumerator enumerator(path, true, base::FileEnumerator::FILES);
 131   for (base::FilePath report_file = enumerator.Next(); !report_file.empty();
 132        report_file = enumerator.Next()) {
 133     if (report_file.Extension() ==
 134         kasko::api::kPermanentFailureMinidumpExtension) {
 135       UMA_HISTOGRAM_BOOLEAN("CrashReport.PermanentUploadFailure", true);
 136     }
 137     bool result = base::DeleteFile(report_file, false);
 138     DCHECK(result);
 139   }
 140 }
 141
 142 void StartFailedKaskoCrashReportWatcher(base::FilePathWatcher* watcher) {
 143   base::FilePath watcher_data_directory;
 144   if (!PathService::Get(chrome::DIR_WATCHER_DATA, &watcher_data_directory)) {
 145     NOTREACHED();
 146   } else {
 147     base::FilePath permanent_failure_directory =
 148         watcher_data_directory.Append(kPermanentlyFailedReportsSubdir);
 149     if (!watcher->Watch(permanent_failure_directory, true,
 150                         base::Bind(&ObserveFailedCrashReportDirectory))) {
 151       NOTREACHED();
 152     }
 153
 154     // Call it once to observe any files present prior to the Watch() call.
 155     ObserveFailedCrashReportDirectory(permanent_failure_directory, false);
 156   }
 157 }
 158 #endif
 159
 160 void DetectFaultTolerantHeap() {
 161   enum FTHFlags {
 162     FTH_HKLM = 1,
 163     FTH_HKCU = 2,
 164     FTH_ACLAYERS_LOADED = 4,
 165     FTH_ACXTRNAL_LOADED = 8,
 166     FTH_FLAGS_COUNT = 16
 167   };
 168
 169   // The Fault Tolerant Heap (FTH) is enabled on some customer machines and is
 170   // affecting their performance. We need to know how many machines are
 171   // affected in order to decide what to do.
 172
 173   // The main way that the FTH is enabled is by having a value set in
 174   // HKLM\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers
 175   // whose name is the full path to the executable and whose data is the
 176   // string FaultTolerantHeap. Some documents suggest that this data may also
 177   // be found in HKCU. There have also been cases observed where this registry
 178   // key is set but the FTH is not enabled, so we also look for AcXtrnal.dll
 179   // and AcLayers.dll which are used to implement the FTH on Windows 7 and 8
 180   // respectively.
 181
 182   // Get the module path so that we can look for it in the registry.
 183   wchar_t module_path[MAX_PATH];
 184   GetModuleFileName(NULL, module_path, ARRAYSIZE(module_path));
 185   // Force null-termination, necessary on Windows XP.
 186   module_path[ARRAYSIZE(module_path)-1] = 0;
 187
 188   const wchar_t* const kRegPath = L"Software\\Microsoft\\Windows NT\\"
 189         L"CurrentVersion\\AppCompatFlags\\Layers";
 190   const wchar_t* const kFTHData = L"FaultTolerantHeap";
 191   // We always want to read from the 64-bit version of the registry if present,
 192   // since that is what the OS looks at, even for 32-bit processes.
 193   const DWORD kRegFlags = KEY_READ | KEY_WOW64_64KEY;
 194
 195   base::win::RegKey FTH_HKLM_reg(HKEY_LOCAL_MACHINE, kRegPath, kRegFlags);
 196   FTHFlags detected = FTHFlags();
 197   base::string16 chrome_app_compat;
 198   if (FTH_HKLM_reg.ReadValue(module_path, &chrome_app_compat) == 0) {
 199     // This *usually* indicates that the fault tolerant heap is enabled.
 200     if (wcsicmp(chrome_app_compat.c_str(), kFTHData) == 0)
 201       detected = static_cast<FTHFlags>(detected | FTH_HKLM);
 202   }
 203
 204   base::win::RegKey FTH_HKCU_reg(HKEY_CURRENT_USER, kRegPath, kRegFlags);
 205   if (FTH_HKCU_reg.ReadValue(module_path, &chrome_app_compat) == 0) {
 206     if (wcsicmp(chrome_app_compat.c_str(), kFTHData) == 0)
 207       detected = static_cast<FTHFlags>(detected | FTH_HKCU);
 208   }
 209
 210   // Look for the DLLs used to implement the FTH and other compat hacks.
 211   if (GetModuleHandleW(L"AcLayers.dll") != NULL)
 212     detected = static_cast<FTHFlags>(detected | FTH_ACLAYERS_LOADED);
 213   if (GetModuleHandleW(L"AcXtrnal.dll") != NULL)
 214     detected = static_cast<FTHFlags>(detected | FTH_ACXTRNAL_LOADED);
 215
 216   UMA_HISTOGRAM_ENUMERATION("FaultTolerantHeap", detected, FTH_FLAGS_COUNT);
 217 }
 218
 219 }  // namespace
 220
 221 void ShowCloseBrowserFirstMessageBox() {
 222   int message_id = IDS_UNINSTALL_CLOSE_APP;
 223   if (base::win::GetVersion() >= base::win::VERSION_WIN8 &&
 224       (ShellIntegration::GetDefaultBrowser() == ShellIntegration::IS_DEFAULT)) {
 225     message_id = IDS_UNINSTALL_CLOSE_APP_IMMERSIVE;
 226   }
 227   chrome::ShowMessageBox(NULL,
 228                          l10n_util::GetStringUTF16(IDS_PRODUCT_NAME),
 229                          l10n_util::GetStringUTF16(message_id),
 230                          chrome::MESSAGE_BOX_TYPE_WARNING);
 231 }
 232
 233 int DoUninstallTasks(bool chrome_still_running) {
 234   // We want to show a warning to user (and exit) if Chrome is already running
 235   // *before* we show the uninstall confirmation dialog box. But while the
 236   // uninstall confirmation dialog is up, user might start Chrome, so we
 237   // check once again after user acknowledges Uninstall dialog.
 238   if (chrome_still_running) {
 239     ShowCloseBrowserFirstMessageBox();
 240     return chrome::RESULT_CODE_UNINSTALL_CHROME_ALIVE;
 241   }
 242   int result = chrome::ShowUninstallBrowserPrompt();
 243   if (browser_util::IsBrowserAlreadyRunning()) {
 244     ShowCloseBrowserFirstMessageBox();
 245     return chrome::RESULT_CODE_UNINSTALL_CHROME_ALIVE;
 246   }
 247
 248   if (result != chrome::RESULT_CODE_UNINSTALL_USER_CANCEL) {
 249     // The following actions are just best effort.
 250     // TODO(gab): Look into removing this code which is now redundant with the
 251     // work done by setup.exe on uninstall.
 252     VLOG(1) << "Executing uninstall actions";
 253     base::FilePath chrome_exe;
 254     if (PathService::Get(base::FILE_EXE, &chrome_exe)) {
 255       ShellUtil::ShortcutLocation user_shortcut_locations[] = {
 256         ShellUtil::SHORTCUT_LOCATION_DESKTOP,
 257         ShellUtil::SHORTCUT_LOCATION_QUICK_LAUNCH,
 258         ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_DIR,
 259         ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_APPS_DIR,
 260       };
 261       BrowserDistribution* dist = BrowserDistribution::GetDistribution();
 262       for (size_t i = 0; i < arraysize(user_shortcut_locations); ++i) {
 263         if (!ShellUtil::RemoveShortcuts(user_shortcut_locations[i], dist,
 264                 ShellUtil::CURRENT_USER, chrome_exe)) {
 265           VLOG(1) << "Failed to delete shortcut at location "
 266                   << user_shortcut_locations[i];
 267         }
 268       }
 269     } else {
 270       NOTREACHED();
 271     }
 272   }
 273   return result;
 274 }
 275
 276 // ChromeBrowserMainPartsWin ---------------------------------------------------
 277
 278 ChromeBrowserMainPartsWin::ChromeBrowserMainPartsWin(
 279     const content::MainFunctionParams& parameters)
 280     : ChromeBrowserMainParts(parameters) {
 281   if (base::win::IsMetroProcess()) {
 282     typedef const wchar_t* (*GetMetroSwitches)(void);
 283     GetMetroSwitches metro_switches_proc = reinterpret_cast<GetMetroSwitches>(
 284         GetProcAddress(base::win::GetMetroModule(),
 285                        "GetMetroCommandLineSwitches"));
 286     if (metro_switches_proc) {
 287       base::string16 metro_switches = (*metro_switches_proc)();
 288       if (!metro_switches.empty()) {
 289         base::CommandLine extra_switches(base::CommandLine::NO_PROGRAM);
 290         extra_switches.ParseFromString(metro_switches);
 291         base::CommandLine::ForCurrentProcess()->AppendArguments(extra_switches,
 292                                                                 false);
 293       }
 294     }
 295   }
 296 }
 297
 298 ChromeBrowserMainPartsWin::~ChromeBrowserMainPartsWin() {
 299 }
 300
 301 void ChromeBrowserMainPartsWin::ToolkitInitialized() {
 302   ChromeBrowserMainParts::ToolkitInitialized();
 303   gfx::PlatformFontWin::adjust_font_callback = &AdjustUIFont;
 304   gfx::PlatformFontWin::get_minimum_font_size_callback = &GetMinimumFontSize;
 305   ui::CursorLoaderWin::SetCursorResourceModule(chrome::kBrowserResourcesDll);
 306 }
 307
 308 void ChromeBrowserMainPartsWin::PreMainMessageLoopStart() {
 309   // installer_util references strings that are normally compiled into
 310   // setup.exe.  In Chrome, these strings are in the locale files.
 311   SetupInstallerUtilStrings();
 312
 313   ChromeBrowserMainParts::PreMainMessageLoopStart();
 314   if (!parameters().ui_task) {
 315     // Make sure that we know how to handle exceptions from the message loop.
 316     InitializeWindowProcExceptions();
 317   }
 318
 319   // Prime the parental controls cache on Windows.
 320   ignore_result(IncognitoModePrefs::ArePlatformParentalControlsEnabled());
 321 }
 322
 323 int ChromeBrowserMainPartsWin::PreCreateThreads() {
 324   int rv = ChromeBrowserMainParts::PreCreateThreads();
 325
 326   // TODO(viettrungluu): why don't we run this earlier?
 327   if (!parsed_command_line().HasSwitch(switches::kNoErrorDialogs) &&
 328       base::win::GetVersion() < base::win::VERSION_XP) {
 329     chrome::ShowMessageBox(NULL,
 330         l10n_util::GetStringUTF16(IDS_PRODUCT_NAME),
 331         l10n_util::GetStringUTF16(IDS_UNSUPPORTED_OS_PRE_WIN_XP),
 332         chrome::MESSAGE_BOX_TYPE_WARNING);
 333   }
 334
 335   return rv;
 336 }
 337
 338 void ChromeBrowserMainPartsWin::ShowMissingLocaleMessageBox() {
 339   ui::MessageBox(NULL,
 340                  base::ASCIIToUTF16(chrome_browser::kMissingLocaleDataMessage),
 341                  base::ASCIIToUTF16(chrome_browser::kMissingLocaleDataTitle),
 342                  MB_OK | MB_ICONERROR | MB_TOPMOST);
 343 }
 344
 345 void ChromeBrowserMainPartsWin::PostProfileInit() {
 346   ChromeBrowserMainParts::PostProfileInit();
 347
 348   // DirectWrite support is mainly available Windows 7 and up.
 349   if (gfx::win::ShouldUseDirectWrite()) {
 350     base::FilePath path(
 351       profile()->GetPath().AppendASCII(content::kFontCacheSharedSectionName));
 352     // This function will create a read only section if cache file exists
 353     // otherwise it will spawn utility process to build cache file, which will
 354     // be used during next browser start/postprofileinit.
 355     if (!content::LoadFontCache(path)) {
 356       // We delay building of font cache until first startup page loads.
 357       // During first renderer start there are lot of things happening
 358       // simultaneously some of them are:
 359       // - Renderer is going through all font files on the system to create
 360       //   a font collection.
 361       // - Renderer loading up startup URL, accessing HTML/JS File cache,
 362       //   net activity etc.
 363       // - Extension initialization.
 364       // We delay building of cache mainly to avoid parallel font file
 365       // loading along with Renderer. Some systems have significant number of
 366       // font files which takes long time to process.
 367       // Related information is at http://crbug.com/436195.
 368       const int kBuildFontCacheDelaySec = 30;
 369       content::BrowserThread::PostDelayedTask(
 370           content::BrowserThread::IO,
 371           FROM_HERE,
 372           base::Bind(ExecuteFontCacheBuildTask, path),
 373           base::TimeDelta::FromSeconds(kBuildFontCacheDelaySec));
 374     }
 375   }
 376 }
 377
 378 void ChromeBrowserMainPartsWin::PostBrowserStart() {
 379   ChromeBrowserMainParts::PostBrowserStart();
 380
 381   UMA_HISTOGRAM_BOOLEAN("Windows.Tablet", base::win::IsTabletDevice());
 382
 383   // Set up a task to verify installed modules in the current process. Use a
 384   // delay to reduce the impact on startup time.
 385   content::BrowserThread::GetMessageLoopProxyForThread(
 386       content::BrowserThread::UI)->PostDelayedTask(
 387           FROM_HERE,
 388           base::Bind(&VerifyInstallation),
 389           base::TimeDelta::FromSeconds(45));
 390
 391   InitializeChromeElf();
 392
 393 #if defined(KASKO)
 394   content::BrowserThread::PostDelayedTask(
 395       content::BrowserThread::FILE, FROM_HERE,
 396       base::Bind(&StartFailedKaskoCrashReportWatcher,
 397                  base::Unretained(&failed_kasko_crash_report_watcher_)),
 398       base::TimeDelta::FromMinutes(5));
 399 #endif
 400
 401 #if defined(GOOGLE_CHROME_BUILD)
 402   did_run_updater_.reset(new DidRunUpdater);
 403 #endif
 404
 405   // Record UMA data about whether the fault-tolerant heap is enabled.
 406   // Use a delayed task to minimize the impact on startup time.
 407   content::BrowserThread::PostDelayedTask(
 408       content::BrowserThread::UI,
 409       FROM_HERE,
 410       base::Bind(&DetectFaultTolerantHeap),
 411       base::TimeDelta::FromMinutes(1));
 412 }
 413
 414 // static
 415 void ChromeBrowserMainPartsWin::PrepareRestartOnCrashEnviroment(
 416     const base::CommandLine& parsed_command_line) {
 417   // Clear this var so child processes don't show the dialog by default.
 418   scoped_ptr<base::Environment> env(base::Environment::Create());
 419   env->UnSetVar(env_vars::kShowRestart);
 420
 421   // For non-interactive tests we don't restart on crash.
 422   if (env->HasVar(env_vars::kHeadless))
 423     return;
 424
 425   // If the known command-line test options are used we don't create the
 426   // environment block which means we don't get the restart dialog.
 427   if (parsed_command_line.HasSwitch(switches::kBrowserCrashTest) ||
 428       parsed_command_line.HasSwitch(switches::kNoErrorDialogs))
 429     return;
 430
 431   // The encoding we use for the info is "title|context|direction" where
 432   // direction is either env_vars::kRtlLocale or env_vars::kLtrLocale depending
 433   // on the current locale.
 434   base::string16 dlg_strings(
 435       l10n_util::GetStringUTF16(IDS_CRASH_RECOVERY_TITLE));
 436   dlg_strings.push_back('|');
 437   base::string16 adjusted_string(
 438       l10n_util::GetStringUTF16(IDS_CRASH_RECOVERY_CONTENT));
 439   base::i18n::AdjustStringForLocaleDirection(&adjusted_string);
 440   dlg_strings.append(adjusted_string);
 441   dlg_strings.push_back('|');
 442   dlg_strings.append(base::ASCIIToUTF16(
 443       base::i18n::IsRTL() ? env_vars::kRtlLocale : env_vars::kLtrLocale));
 444
 445   env->SetVar(env_vars::kRestartInfo, base::UTF16ToUTF8(dlg_strings));
 446 }
 447
 448 // static
 449 void ChromeBrowserMainPartsWin::RegisterApplicationRestart(
 450     const base::CommandLine& parsed_command_line) {
 451   DCHECK(base::win::GetVersion() >= base::win::VERSION_VISTA);
 452   base::ScopedNativeLibrary library(base::FilePath(L"kernel32.dll"));
 453   // Get the function pointer for RegisterApplicationRestart.
 454   RegisterApplicationRestartProc register_application_restart =
 455       reinterpret_cast<RegisterApplicationRestartProc>(
 456           library.GetFunctionPointer("RegisterApplicationRestart"));
 457   if (!register_application_restart) {
 458     LOG(WARNING) << "Cannot find RegisterApplicationRestart in kernel32.dll";
 459     return;
 460   }
 461   // The Windows Restart Manager expects a string of command line flags only,
 462   // without the program.
 463   base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
 464   command_line.AppendArguments(parsed_command_line, false);
 465   if (!command_line.HasSwitch(switches::kRestoreLastSession))
 466     command_line.AppendSwitch(switches::kRestoreLastSession);
 467
 468   // Restart Chrome if the computer is restarted as the result of an update.
 469   // This could be extended to handle crashes, hangs, and patches.
 470   HRESULT hr = register_application_restart(
 471       command_line.GetCommandLineString().c_str(),
 472       RESTART_NO_CRASH | RESTART_NO_HANG | RESTART_NO_PATCH);
 473   if (FAILED(hr)) {
 474     if (hr == E_INVALIDARG) {
 475       LOG(WARNING) << "Command line too long for RegisterApplicationRestart";
 476     } else {
 477       NOTREACHED() << "RegisterApplicationRestart failed. hr: " << hr <<
 478                       ", command_line: " << command_line.GetCommandLineString();
 479     }
 480   }
 481 }
 482
 483 // static
 484 int ChromeBrowserMainPartsWin::HandleIconsCommands(
 485     const base::CommandLine& parsed_command_line) {
 486   if (parsed_command_line.HasSwitch(switches::kHideIcons)) {
 487     base::string16 cp_applet;
 488     base::win::Version version = base::win::GetVersion();
 489     if (version >= base::win::VERSION_VISTA) {
 490       cp_applet.assign(L"Programs and Features");  // Windows Vista and later.
 491     } else if (version >= base::win::VERSION_XP) {
 492       cp_applet.assign(L"Add/Remove Programs");  // Windows XP.
 493     } else {
 494       return chrome::RESULT_CODE_UNSUPPORTED_PARAM;  // Not supported
 495     }
 496
 497     const base::string16 msg =
 498         l10n_util::GetStringFUTF16(IDS_HIDE_ICONS_NOT_SUPPORTED, cp_applet);
 499     const base::string16 caption = l10n_util::GetStringUTF16(IDS_PRODUCT_NAME);
 500     const UINT flags = MB_OKCANCEL | MB_ICONWARNING | MB_TOPMOST;
 501     if (IDOK == ui::MessageBox(NULL, msg, caption, flags))
 502       ShellExecute(NULL, NULL, L"appwiz.cpl", NULL, NULL, SW_SHOWNORMAL);
 503
 504     // Exit as we are not launching the browser.
 505     return content::RESULT_CODE_NORMAL_EXIT;
 506   }
 507   // We don't hide icons so we shouldn't do anything special to show them
 508   return chrome::RESULT_CODE_UNSUPPORTED_PARAM;
 509 }
 510
 511 // static
 512 bool ChromeBrowserMainPartsWin::CheckMachineLevelInstall() {
 513   // TODO(tommi): Check if using the default distribution is always the right
 514   // thing to do.
 515   BrowserDistribution* dist = BrowserDistribution::GetDistribution();
 516   Version version;
 517   InstallUtil::GetChromeVersion(dist, true, &version);
 518   if (version.IsValid()) {
 519     base::FilePath exe_path;
 520     PathService::Get(base::DIR_EXE, &exe_path);
 521     std::wstring exe = exe_path.value();
 522     base::FilePath user_exe_path(installer::GetChromeInstallPath(false, dist));
 523     if (base::FilePath::CompareEqualIgnoreCase(exe, user_exe_path.value())) {
 524       bool is_metro = base::win::IsMetroProcess();
 525       if (!is_metro) {
 526         // The dialog cannot be shown in Win8 Metro as doing so hangs Chrome on
 527         // an invisible dialog.
 528         // TODO (gab): Get rid of this dialog altogether and auto-launch
 529         // system-level Chrome instead.
 530         const base::string16 text =
 531             l10n_util::GetStringUTF16(IDS_MACHINE_LEVEL_INSTALL_CONFLICT);
 532         const base::string16 caption =
 533             l10n_util::GetStringUTF16(IDS_PRODUCT_NAME);
 534         const UINT flags = MB_OK | MB_ICONERROR | MB_TOPMOST;
 535         ui::MessageBox(NULL, text, caption, flags);
 536       }
 537       base::CommandLine uninstall_cmd(
 538           InstallUtil::GetChromeUninstallCmd(false, dist->GetType()));
 539       if (!uninstall_cmd.GetProgram().empty()) {
 540         uninstall_cmd.AppendSwitch(installer::switches::kSelfDestruct);
 541         uninstall_cmd.AppendSwitch(installer::switches::kForceUninstall);
 542         uninstall_cmd.AppendSwitch(
 543             installer::switches::kDoNotRemoveSharedItems);
 544
 545         // Trigger Active Setup for the system-level Chrome to make sure
 546         // per-user shortcuts to the system-level Chrome are created. Skip this
 547         // if the system-level Chrome will undergo first run anyway, as Active
 548         // Setup is triggered on system-level Chrome's first run.
 549         // TODO(gab): Instead of having callers of Active Setup think about
 550         // other callers, have Active Setup itself register when it ran and
 551         // no-op otherwise (http://crbug.com/346843).
 552         if (!first_run::IsChromeFirstRun())
 553           uninstall_cmd.AppendSwitch(installer::switches::kTriggerActiveSetup);
 554
 555         const base::FilePath setup_exe(uninstall_cmd.GetProgram());
 556         const base::string16 params(uninstall_cmd.GetArgumentsString());
 557
 558         SHELLEXECUTEINFO sei = { sizeof(sei) };
 559         sei.fMask = SEE_MASK_NOASYNC;
 560         sei.nShow = SW_SHOWNORMAL;
 561         sei.lpFile = setup_exe.value().c_str();
 562         sei.lpParameters = params.c_str();
 563         // On Windows 8 SEE_MASK_FLAG_LOG_USAGE is necessary to guarantee we
 564         // flip to the Desktop when launching.
 565         if (is_metro)
 566           sei.fMask |= SEE_MASK_FLAG_LOG_USAGE;
 567
 568         if (!::ShellExecuteEx(&sei))
 569           DPCHECK(false);
 570       }
 571       return true;
 572     }
 573   }
 574   return false;
 575 }
 576
 577 base::string16 TranslationDelegate::GetLocalizedString(
 578     int installer_string_id) {
 579   int resource_id = 0;
 580   switch (installer_string_id) {
 581   // HANDLE_STRING is used by the DO_INSTALLER_STRING_MAPPING macro which is in
 582   // the generated header installer_util_strings.h.
 583 #define HANDLE_STRING(base_id, chrome_id) \
 584   case base_id: \
 585     resource_id = chrome_id; \
 586     break;
 587   DO_INSTALLER_STRING_MAPPING
 588 #undef HANDLE_STRING
 589   default:
 590     NOTREACHED();
 591   }
 592   if (resource_id)
 593     return l10n_util::GetStringUTF16(resource_id);
 594   return base::string16();
 595 }
 596
 597 // static
 598 void ChromeBrowserMainPartsWin::SetupInstallerUtilStrings() {
 599   CR_DEFINE_STATIC_LOCAL(TranslationDelegate, delegate, ());
 600   installer::SetTranslationDelegate(&delegate);
 601 }