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      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/installer/setup/install.h"
      6 
      7 #include <windows.h>
      8 #include <shlobj.h>
      9 #include <time.h>
     10 
     11 #include <string>
     12 
     13 #include "base/command_line.h"
     14 #include "base/file_util.h"
     15 #include "base/files/file_path.h"
     16 #include "base/logging.h"
     17 #include "base/memory/scoped_ptr.h"
     18 #include "base/path_service.h"
     19 #include "base/process/launch.h"
     20 #include "base/strings/string_util.h"
     21 #include "base/strings/stringprintf.h"
     22 #include "base/strings/utf_string_conversions.h"
     23 #include "base/win/shortcut.h"
     24 #include "base/win/windows_version.h"
     25 #include "chrome/common/chrome_constants.h"
     26 #include "chrome/common/chrome_switches.h"
     27 #include "chrome/installer/launcher_support/chrome_launcher_support.h"
     28 #include "chrome/installer/setup/install_worker.h"
     29 #include "chrome/installer/setup/setup_constants.h"
     30 #include "chrome/installer/util/auto_launch_util.h"
     31 #include "chrome/installer/util/browser_distribution.h"
     32 #include "chrome/installer/util/create_reg_key_work_item.h"
     33 #include "chrome/installer/util/delete_after_reboot_helper.h"
     34 #include "chrome/installer/util/google_update_constants.h"
     35 #include "chrome/installer/util/helper.h"
     36 #include "chrome/installer/util/install_util.h"
     37 #include "chrome/installer/util/master_preferences.h"
     38 #include "chrome/installer/util/master_preferences_constants.h"
     39 #include "chrome/installer/util/set_reg_value_work_item.h"
     40 #include "chrome/installer/util/shell_util.h"
     41 #include "chrome/installer/util/util_constants.h"
     42 #include "chrome/installer/util/work_item_list.h"
     43 
     44 // Build-time generated include file.
     45 #include "registered_dlls.h"  // NOLINT
     46 
     47 using installer::InstallerState;
     48 using installer::InstallationState;
     49 using installer::Product;
     50 
     51 namespace {
     52 
     53 void LogShortcutOperation(ShellUtil::ShortcutLocation location,
     54                           BrowserDistribution* dist,
     55                           const ShellUtil::ShortcutProperties& properties,
     56                           ShellUtil::ShortcutOperation operation,
     57                           bool failed) {
     58   // ShellUtil::SHELL_SHORTCUT_UPDATE_EXISTING should not be used at install and
     59   // thus this method does not handle logging a message for it.
     60   DCHECK(operation != ShellUtil::SHELL_SHORTCUT_UPDATE_EXISTING);
     61   std::string message;
     62   if (failed)
     63     message.append("Failed: ");
     64   message.append(
     65       (operation == ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS ||
     66        operation == ShellUtil::SHELL_SHORTCUT_CREATE_IF_NO_SYSTEM_LEVEL) ?
     67       "Creating " : "Overwriting ");
     68   if (failed && operation == ShellUtil::SHELL_SHORTCUT_REPLACE_EXISTING)
     69     message.append("(maybe the shortcut doesn't exist?) ");
     70   message.append((properties.level == ShellUtil::CURRENT_USER) ? "per-user " :
     71                                                                  "all-users ");
     72   switch (location) {
     73     case ShellUtil::SHORTCUT_LOCATION_DESKTOP:
     74       message.append("Desktop ");
     75       break;
     76     case ShellUtil::SHORTCUT_LOCATION_QUICK_LAUNCH:
     77       message.append("Quick Launch ");
     78       break;
     79     case ShellUtil::SHORTCUT_LOCATION_START_MENU:
     80       message.append("Start menu ");
     81       break;
     82     default:
     83       NOTREACHED();
     84   }
     85 
     86   message.push_back('"');
     87   if (properties.has_shortcut_name())
     88     message.append(UTF16ToUTF8(properties.shortcut_name));
     89   else
     90     message.append(UTF16ToUTF8(dist->GetAppShortCutName()));
     91   message.push_back('"');
     92 
     93   message.append(" shortcut to ");
     94   message.append(UTF16ToUTF8(properties.target.value()));
     95   if (properties.has_arguments())
     96     message.append(UTF16ToUTF8(properties.arguments));
     97 
     98   if (properties.pin_to_taskbar &&
     99       base::win::GetVersion() >= base::win::VERSION_WIN7) {
    100     message.append(" and pinning to the taskbar.");
    101   } else {
    102     message.push_back('.');
    103   }
    104 
    105   if (failed)
    106     LOG(WARNING) << message;
    107   else
    108     VLOG(1) << message;
    109 }
    110 
    111 void ExecuteAndLogShortcutOperation(
    112     ShellUtil::ShortcutLocation location,
    113     BrowserDistribution* dist,
    114     const ShellUtil::ShortcutProperties& properties,
    115     ShellUtil::ShortcutOperation operation) {
    116   LogShortcutOperation(location, dist, properties, operation, false);
    117   if (!ShellUtil::CreateOrUpdateShortcut(location, dist, properties,
    118                                          operation)) {
    119     LogShortcutOperation(location, dist, properties, operation, true);
    120   }
    121 }
    122 
    123 void AddChromeToMediaPlayerList() {
    124   string16 reg_path(installer::kMediaPlayerRegPath);
    125   // registry paths can also be appended like file system path
    126   reg_path.push_back(base::FilePath::kSeparators[0]);
    127   reg_path.append(installer::kChromeExe);
    128   VLOG(1) << "Adding Chrome to Media player list at " << reg_path;
    129   scoped_ptr<WorkItem> work_item(WorkItem::CreateCreateRegKeyWorkItem(
    130       HKEY_LOCAL_MACHINE, reg_path));
    131 
    132   // if the operation fails we log the error but still continue
    133   if (!work_item.get()->Do())
    134     LOG(ERROR) << "Could not add Chrome to media player inclusion list.";
    135 }
    136 
    137 // Copy master_preferences file provided to installer, in the same folder
    138 // as chrome.exe so Chrome first run can find it. This function will be called
    139 // only on the first install of Chrome.
    140 void CopyPreferenceFileForFirstRun(const InstallerState& installer_state,
    141                                    const base::FilePath& prefs_source_path) {
    142   base::FilePath prefs_dest_path(installer_state.target_path().AppendASCII(
    143       installer::kDefaultMasterPrefs));
    144   if (!base::CopyFile(prefs_source_path, prefs_dest_path)) {
    145     VLOG(1) << "Failed to copy master preferences from:"
    146             << prefs_source_path.value() << " gle: " << ::GetLastError();
    147   }
    148 }
    149 
    150 // This function installs a new version of Chrome to the specified location.
    151 //
    152 // setup_path: Path to the executable (setup.exe) as it will be copied
    153 //           to Chrome install folder after install is complete
    154 // archive_path: Path to the archive (chrome.7z) as it will be copied
    155 //               to Chrome install folder after install is complete
    156 // src_path: the path that contains a complete and unpacked Chrome package
    157 //           to be installed.
    158 // temp_path: the path of working directory used during installation. This path
    159 //            does not need to exist.
    160 // new_version: new Chrome version that needs to be installed
    161 // current_version: returns the current active version (if any)
    162 //
    163 // This function makes best effort to do installation in a transactional
    164 // manner. If failed it tries to rollback all changes on the file system
    165 // and registry. For example, if package exists before calling the
    166 // function, it rolls back all new file and directory changes under
    167 // package. If package does not exist before calling the function
    168 // (typical new install), the function creates package during install
    169 // and removes the whole directory during rollback.
    170 installer::InstallStatus InstallNewVersion(
    171     const InstallationState& original_state,
    172     const InstallerState& installer_state,
    173     const base::FilePath& setup_path,
    174     const base::FilePath& archive_path,
    175     const base::FilePath& src_path,
    176     const base::FilePath& temp_path,
    177     const Version& new_version,
    178     scoped_ptr<Version>* current_version) {
    179   DCHECK(current_version);
    180 
    181   installer_state.UpdateStage(installer::BUILDING);
    182 
    183   current_version->reset(installer_state.GetCurrentVersion(original_state));
    184   scoped_ptr<WorkItemList> install_list(WorkItem::CreateWorkItemList());
    185 
    186   AddInstallWorkItems(original_state,
    187                       installer_state,
    188                       setup_path,
    189                       archive_path,
    190                       src_path,
    191                       temp_path,
    192                       current_version->get(),
    193                       new_version,
    194                       install_list.get());
    195 
    196   base::FilePath new_chrome_exe(
    197       installer_state.target_path().Append(installer::kChromeNewExe));
    198 
    199   installer_state.UpdateStage(installer::EXECUTING);
    200 
    201   if (!install_list->Do()) {
    202     installer_state.UpdateStage(installer::ROLLINGBACK);
    203     installer::InstallStatus result =
    204         base::PathExists(new_chrome_exe) && current_version->get() &&
    205         new_version.Equals(*current_version->get()) ?
    206         installer::SAME_VERSION_REPAIR_FAILED :
    207         installer::INSTALL_FAILED;
    208     LOG(ERROR) << "Install failed, rolling back... result: " << result;
    209     install_list->Rollback();
    210     LOG(ERROR) << "Rollback complete. ";
    211     return result;
    212   }
    213 
    214   installer_state.UpdateStage(installer::REFRESHING_POLICY);
    215 
    216   installer::RefreshElevationPolicy();
    217 
    218   if (!current_version->get()) {
    219     VLOG(1) << "First install of version " << new_version.GetString();
    220     return installer::FIRST_INSTALL_SUCCESS;
    221   }
    222 
    223   if (new_version.Equals(**current_version)) {
    224     VLOG(1) << "Install repaired of version " << new_version.GetString();
    225     return installer::INSTALL_REPAIRED;
    226   }
    227 
    228   if (new_version.CompareTo(**current_version) > 0) {
    229     if (base::PathExists(new_chrome_exe)) {
    230       VLOG(1) << "Version updated to " << new_version.GetString()
    231               << " while running " << (*current_version)->GetString();
    232       return installer::IN_USE_UPDATED;
    233     }
    234     VLOG(1) << "Version updated to " << new_version.GetString();
    235     return installer::NEW_VERSION_UPDATED;
    236   }
    237 
    238   LOG(ERROR) << "Not sure how we got here while updating"
    239              << ", new version: " << new_version.GetString()
    240              << ", old version: " << (*current_version)->GetString();
    241 
    242   return installer::INSTALL_FAILED;
    243 }
    244 
    245 // Deletes the old "Uninstall Google Chrome" shortcut in the Start menu and, if
    246 // this is a system-level install, also deletes the old Default user Quick
    247 // Launch shortcut. Both of these were created prior to Chrome 24; in Chrome 24,
    248 // the uninstall shortcut was removed and the Default user Quick Launch shortcut
    249 // was replaced by per-user shortcuts created via Active Setup.
    250 void CleanupLegacyShortcuts(const InstallerState& installer_state,
    251                             BrowserDistribution* dist,
    252                             const base::FilePath& chrome_exe) {
    253   ShellUtil::ShellChange shortcut_level = installer_state.system_install() ?
    254       ShellUtil::SYSTEM_LEVEL : ShellUtil::CURRENT_USER;
    255   base::FilePath uninstall_shortcut_path;
    256   ShellUtil::GetShortcutPath(ShellUtil::SHORTCUT_LOCATION_START_MENU, dist,
    257                              shortcut_level, &uninstall_shortcut_path);
    258   uninstall_shortcut_path = uninstall_shortcut_path.Append(
    259       dist->GetUninstallLinkName() + installer::kLnkExt);
    260   base::DeleteFile(uninstall_shortcut_path, false);
    261 
    262   if (installer_state.system_install()) {
    263     ShellUtil::RemoveShortcuts(
    264         ShellUtil::SHORTCUT_LOCATION_QUICK_LAUNCH, dist,
    265         ShellUtil::SYSTEM_LEVEL, chrome_exe);
    266   }
    267 }
    268 
    269 // Returns the appropriate shortcut operations for App Launcher,
    270 // based on state of installation and master_preferences.
    271 installer::InstallShortcutOperation GetAppLauncherShortcutOperation(
    272     const InstallationState& original_state,
    273     const InstallerState& installer_state) {
    274   const installer::ProductState* original_app_host_state =
    275       original_state.GetProductState(installer_state.system_install(),
    276                                      BrowserDistribution::CHROME_APP_HOST);
    277   bool app_launcher_exists = original_app_host_state &&
    278       original_app_host_state->uninstall_command()
    279           .HasSwitch(installer::switches::kChromeAppLauncher);
    280   if (!app_launcher_exists)
    281     return installer::INSTALL_SHORTCUT_CREATE_ALL;
    282 
    283   return installer::INSTALL_SHORTCUT_REPLACE_EXISTING;
    284 }
    285 
    286 }  // end namespace
    287 
    288 namespace installer {
    289 
    290 void EscapeXmlAttributeValueInSingleQuotes(string16* att_value) {
    291   ReplaceChars(*att_value, L"&", L"&amp;", att_value);
    292   ReplaceChars(*att_value, L"'", L"&apos;", att_value);
    293   ReplaceChars(*att_value, L"<", L"&lt;", att_value);
    294 }
    295 
    296 bool CreateVisualElementsManifest(const base::FilePath& src_path,
    297                                   const Version& version) {
    298   // Construct the relative path to the versioned VisualElements directory.
    299   string16 elements_dir(ASCIIToUTF16(version.GetString()));
    300   elements_dir.push_back(base::FilePath::kSeparators[0]);
    301   elements_dir.append(installer::kVisualElements);
    302 
    303   // Some distributions of Chromium may not include visual elements. Only
    304   // proceed if this distribution does.
    305   if (!base::PathExists(src_path.Append(elements_dir))) {
    306     VLOG(1) << "No visual elements found, not writing "
    307             << installer::kVisualElementsManifest << " to " << src_path.value();
    308     return true;
    309   } else {
    310     // A printf_p-style format string for generating the visual elements
    311     // manifest. Required arguments, in order, are:
    312     //   - Localized display name for the product.
    313     //   - Relative path to the VisualElements directory.
    314     static const char kManifestTemplate[] =
    315         "<Application>\r\n"
    316         "  <VisualElements\r\n"
    317         "      DisplayName='%1$ls'\r\n"
    318         "      Logo='%2$ls\\Logo.png'\r\n"
    319         "      SmallLogo='%2$ls\\SmallLogo.png'\r\n"
    320         "      ForegroundText='light'\r\n"
    321         "      BackgroundColor='#323232'>\r\n"
    322         "    <DefaultTile ShowName='allLogos'/>\r\n"
    323         "    <SplashScreen Image='%2$ls\\splash-620x300.png'/>\r\n"
    324         "  </VisualElements>\r\n"
    325         "</Application>";
    326 
    327     const string16 manifest_template(ASCIIToUTF16(kManifestTemplate));
    328 
    329     BrowserDistribution* dist = BrowserDistribution::GetSpecificDistribution(
    330         BrowserDistribution::CHROME_BROWSER);
    331     // TODO(grt): http://crbug.com/75152 Write a reference to a localized
    332     // resource for |display_name|.
    333     string16 display_name(dist->GetAppShortCutName());
    334     EscapeXmlAttributeValueInSingleQuotes(&display_name);
    335 
    336     // Fill the manifest with the desired values.
    337     string16 manifest16(base::StringPrintf(manifest_template.c_str(),
    338                                            display_name.c_str(),
    339                                            elements_dir.c_str()));
    340 
    341     // Write the manifest to |src_path|.
    342     const std::string manifest(UTF16ToUTF8(manifest16));
    343     if (file_util::WriteFile(
    344             src_path.Append(installer::kVisualElementsManifest),
    345             manifest.c_str(), manifest.size())) {
    346       VLOG(1) << "Successfully wrote " << installer::kVisualElementsManifest
    347               << " to " << src_path.value();
    348       return true;
    349     } else {
    350       PLOG(ERROR) << "Error writing " << installer::kVisualElementsManifest
    351                   << " to " << src_path.value();
    352       return false;
    353     }
    354   }
    355 }
    356 
    357 void CreateOrUpdateShortcuts(
    358     const base::FilePath& target,
    359     const Product& product,
    360     const MasterPreferences& prefs,
    361     InstallShortcutLevel install_level,
    362     InstallShortcutOperation install_operation) {
    363   bool do_not_create_any_shortcuts = false;
    364   prefs.GetBool(master_preferences::kDoNotCreateAnyShortcuts,
    365                 &do_not_create_any_shortcuts);
    366   if (do_not_create_any_shortcuts)
    367     return;
    368 
    369   // Extract shortcut preferences from |prefs|.
    370   bool do_not_create_desktop_shortcut = false;
    371   bool do_not_create_quick_launch_shortcut = false;
    372   bool do_not_create_taskbar_shortcut = false;
    373   bool alternate_desktop_shortcut = false;
    374   prefs.GetBool(master_preferences::kDoNotCreateDesktopShortcut,
    375                 &do_not_create_desktop_shortcut);
    376   prefs.GetBool(master_preferences::kDoNotCreateQuickLaunchShortcut,
    377                 &do_not_create_quick_launch_shortcut);
    378   prefs.GetBool(master_preferences::kDoNotCreateTaskbarShortcut,
    379                 &do_not_create_taskbar_shortcut);
    380   prefs.GetBool(master_preferences::kAltShortcutText,
    381                 &alternate_desktop_shortcut);
    382 
    383   BrowserDistribution* dist = product.distribution();
    384 
    385   // The default operation on update is to overwrite shortcuts with the
    386   // currently desired properties, but do so only for shortcuts that still
    387   // exist.
    388   ShellUtil::ShortcutOperation shortcut_operation;
    389   switch (install_operation) {
    390     case INSTALL_SHORTCUT_CREATE_ALL:
    391       shortcut_operation = ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS;
    392       break;
    393     case INSTALL_SHORTCUT_CREATE_EACH_IF_NO_SYSTEM_LEVEL:
    394       shortcut_operation = ShellUtil::SHELL_SHORTCUT_CREATE_IF_NO_SYSTEM_LEVEL;
    395       break;
    396     default:
    397       DCHECK(install_operation == INSTALL_SHORTCUT_REPLACE_EXISTING);
    398       shortcut_operation = ShellUtil::SHELL_SHORTCUT_REPLACE_EXISTING;
    399       break;
    400   }
    401 
    402   // Shortcuts are always installed per-user unless specified.
    403   ShellUtil::ShellChange shortcut_level = (install_level == ALL_USERS ?
    404       ShellUtil::SYSTEM_LEVEL : ShellUtil::CURRENT_USER);
    405 
    406   // |base_properties|: The basic properties to set on every shortcut installed
    407   // (to be refined on a per-shortcut basis).
    408   ShellUtil::ShortcutProperties base_properties(shortcut_level);
    409   product.AddDefaultShortcutProperties(target, &base_properties);
    410 
    411   if (!do_not_create_desktop_shortcut ||
    412       shortcut_operation == ShellUtil::SHELL_SHORTCUT_REPLACE_EXISTING) {
    413     ShellUtil::ShortcutProperties desktop_properties(base_properties);
    414     if (alternate_desktop_shortcut)
    415       desktop_properties.set_shortcut_name(dist->GetAlternateApplicationName());
    416     ExecuteAndLogShortcutOperation(
    417         ShellUtil::SHORTCUT_LOCATION_DESKTOP, dist, desktop_properties,
    418         shortcut_operation);
    419 
    420     // On update there is no harm in always trying to update the alternate
    421     // Desktop shortcut.
    422     if (!alternate_desktop_shortcut &&
    423         shortcut_operation == ShellUtil::SHELL_SHORTCUT_REPLACE_EXISTING) {
    424       desktop_properties.set_shortcut_name(dist->GetAlternateApplicationName());
    425       ExecuteAndLogShortcutOperation(
    426           ShellUtil::SHORTCUT_LOCATION_DESKTOP, dist, desktop_properties,
    427           shortcut_operation);
    428     }
    429   }
    430 
    431   if (!do_not_create_quick_launch_shortcut ||
    432       shortcut_operation == ShellUtil::SHELL_SHORTCUT_REPLACE_EXISTING) {
    433     // There is no such thing as an all-users Quick Launch shortcut, always
    434     // install the per-user shortcut.
    435     ShellUtil::ShortcutProperties quick_launch_properties(base_properties);
    436     quick_launch_properties.level = ShellUtil::CURRENT_USER;
    437     ExecuteAndLogShortcutOperation(
    438         ShellUtil::SHORTCUT_LOCATION_QUICK_LAUNCH, dist,
    439         quick_launch_properties, shortcut_operation);
    440   }
    441 
    442   ShellUtil::ShortcutProperties start_menu_properties(base_properties);
    443   // IMPORTANT: Only the default (no arguments and default browserappid) browser
    444   // shortcut in the Start menu (Start screen on Win8+) should be made dual
    445   // mode.
    446   start_menu_properties.set_dual_mode(true);
    447   if (!do_not_create_taskbar_shortcut &&
    448       (shortcut_operation == ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS ||
    449        shortcut_operation ==
    450            ShellUtil::SHELL_SHORTCUT_CREATE_IF_NO_SYSTEM_LEVEL)) {
    451     start_menu_properties.set_pin_to_taskbar(true);
    452   }
    453   ExecuteAndLogShortcutOperation(ShellUtil::SHORTCUT_LOCATION_START_MENU,
    454                                  dist, start_menu_properties,
    455                                  shortcut_operation);
    456 }
    457 
    458 void RegisterChromeOnMachine(const InstallerState& installer_state,
    459                              const Product& product,
    460                              bool make_chrome_default) {
    461   DCHECK(product.is_chrome());
    462 
    463   // Try to add Chrome to Media Player shim inclusion list. We don't do any
    464   // error checking here because this operation will fail if user doesn't
    465   // have admin rights and we want to ignore the error.
    466   AddChromeToMediaPlayerList();
    467 
    468   // Make Chrome the default browser if desired when possible. Otherwise, only
    469   // register it with Windows.
    470   BrowserDistribution* dist = product.distribution();
    471   const string16 chrome_exe(
    472       installer_state.target_path().Append(installer::kChromeExe).value());
    473   VLOG(1) << "Registering Chrome as browser: " << chrome_exe;
    474   if (make_chrome_default && ShellUtil::CanMakeChromeDefaultUnattended()) {
    475     int level = ShellUtil::CURRENT_USER;
    476     if (installer_state.system_install())
    477       level = level | ShellUtil::SYSTEM_LEVEL;
    478     ShellUtil::MakeChromeDefault(dist, level, chrome_exe, true);
    479   } else {
    480     ShellUtil::RegisterChromeBrowser(dist, chrome_exe, string16(), false);
    481   }
    482 }
    483 
    484 InstallStatus InstallOrUpdateProduct(
    485     const InstallationState& original_state,
    486     const InstallerState& installer_state,
    487     const base::FilePath& setup_path,
    488     const base::FilePath& archive_path,
    489     const base::FilePath& install_temp_path,
    490     const base::FilePath& src_path,
    491     const base::FilePath& prefs_path,
    492     const MasterPreferences& prefs,
    493     const Version& new_version) {
    494   // TODO(robertshield): Removing the pending on-reboot moves should be done
    495   // elsewhere.
    496   // TODO(erikwright): Understand why this is Chrome Frame only and whether
    497   // it also applies to App Host. Shouldn't it apply to any multi-install too?
    498   const Products& products = installer_state.products();
    499   DCHECK(products.size());
    500   if (installer_state.FindProduct(BrowserDistribution::CHROME_FRAME)) {
    501     // Make sure that we don't end up deleting installed files on next reboot.
    502     if (!RemoveFromMovesPendingReboot(
    503             installer_state.target_path().value().c_str())) {
    504       LOG(ERROR) << "Error accessing pending moves value.";
    505     }
    506   }
    507 
    508   // Create VisualElementManifest.xml in |src_path| (if required) so that it
    509   // looks as if it had been extracted from the archive when calling
    510   // InstallNewVersion() below.
    511   installer_state.UpdateStage(installer::CREATING_VISUAL_MANIFEST);
    512   CreateVisualElementsManifest(src_path, new_version);
    513 
    514   scoped_ptr<Version> existing_version;
    515   InstallStatus result = InstallNewVersion(original_state, installer_state,
    516       setup_path, archive_path, src_path, install_temp_path, new_version,
    517       &existing_version);
    518 
    519   // TODO(robertshield): Everything below this line should instead be captured
    520   // by WorkItems.
    521   if (!InstallUtil::GetInstallReturnCode(result)) {
    522     installer_state.UpdateStage(installer::UPDATING_CHANNELS);
    523 
    524     // Update the modifiers on the channel values for the product(s) being
    525     // installed and for the binaries in case of multi-install.
    526     installer_state.UpdateChannels();
    527 
    528     installer_state.UpdateStage(installer::COPYING_PREFERENCES_FILE);
    529 
    530     if (result == FIRST_INSTALL_SUCCESS && !prefs_path.empty())
    531       CopyPreferenceFileForFirstRun(installer_state, prefs_path);
    532 
    533     installer_state.UpdateStage(installer::CREATING_SHORTCUTS);
    534 
    535     const Product* app_launcher_product =
    536         installer_state.FindProduct(BrowserDistribution::CHROME_APP_HOST);
    537     // Creates shortcuts for App Launcher.
    538     if (app_launcher_product) {
    539       // TODO(huangs): Remove this check once we have system-level App Host.
    540       DCHECK(!installer_state.system_install());
    541       const base::FilePath app_host_exe(
    542           installer_state.target_path().Append(kChromeAppHostExe));
    543       InstallShortcutOperation app_launcher_shortcut_operation =
    544           GetAppLauncherShortcutOperation(original_state, installer_state);
    545 
    546       // Always install per-user shortcuts for App Launcher.
    547       CreateOrUpdateShortcuts(app_host_exe, *app_launcher_product, prefs,
    548                               CURRENT_USER, app_launcher_shortcut_operation);
    549     }
    550 
    551     const Product* chrome_product =
    552         installer_state.FindProduct(BrowserDistribution::CHROME_BROWSER);
    553     // Creates shortcuts for Chrome.
    554     if (chrome_product) {
    555       BrowserDistribution* chrome_dist = chrome_product->distribution();
    556       const base::FilePath chrome_exe(
    557           installer_state.target_path().Append(kChromeExe));
    558       CleanupLegacyShortcuts(installer_state, chrome_dist, chrome_exe);
    559 
    560       // Install per-user shortcuts on user-level installs and all-users
    561       // shortcuts on system-level installs. Note that Active Setup will take
    562       // care of installing missing per-user shortcuts on system-level install
    563       // (i.e., quick launch, taskbar pin, and possibly deleted all-users
    564       // shortcuts).
    565       InstallShortcutLevel install_level = installer_state.system_install() ?
    566           ALL_USERS : CURRENT_USER;
    567 
    568       InstallShortcutOperation install_operation =
    569           INSTALL_SHORTCUT_REPLACE_EXISTING;
    570       if (result == installer::FIRST_INSTALL_SUCCESS ||
    571           result == installer::INSTALL_REPAIRED ||
    572           !original_state.GetProductState(installer_state.system_install(),
    573                                           chrome_dist->GetType())) {
    574         // Always create the shortcuts on a new install, a repair install, and
    575         // when the Chrome product is being added to the current install.
    576         install_operation = INSTALL_SHORTCUT_CREATE_ALL;
    577       }
    578 
    579       CreateOrUpdateShortcuts(chrome_exe, *chrome_product, prefs, install_level,
    580                               install_operation);
    581     }
    582 
    583     if (chrome_product) {
    584       // Register Chrome and, if requested, make Chrome the default browser.
    585       installer_state.UpdateStage(installer::REGISTERING_CHROME);
    586 
    587       bool make_chrome_default = false;
    588       prefs.GetBool(master_preferences::kMakeChromeDefault,
    589                     &make_chrome_default);
    590 
    591       // If this is not the user's first Chrome install, but they have chosen
    592       // Chrome to become their default browser on the download page, we must
    593       // force it here because the master_preferences file will not get copied
    594       // into the build.
    595       bool force_chrome_default_for_user = false;
    596       if (result == NEW_VERSION_UPDATED ||
    597           result == INSTALL_REPAIRED) {
    598         prefs.GetBool(master_preferences::kMakeChromeDefaultForUser,
    599                       &force_chrome_default_for_user);
    600       }
    601 
    602       RegisterChromeOnMachine(installer_state, *chrome_product,
    603           make_chrome_default || force_chrome_default_for_user);
    604 
    605       // Configure auto-launch.
    606       if (result == FIRST_INSTALL_SUCCESS) {
    607         installer_state.UpdateStage(installer::CONFIGURE_AUTO_LAUNCH);
    608 
    609         // Add auto-launch key if specified in master_preferences.
    610         bool auto_launch_chrome = false;
    611         prefs.GetBool(
    612             installer::master_preferences::kAutoLaunchChrome,
    613             &auto_launch_chrome);
    614         if (auto_launch_chrome) {
    615           auto_launch_util::EnableForegroundStartAtLogin(
    616               ASCIIToUTF16(chrome::kInitialProfile),
    617               installer_state.target_path());
    618         }
    619       }
    620     }
    621 
    622     installer_state.UpdateStage(installer::REMOVING_OLD_VERSIONS);
    623 
    624     installer_state.RemoveOldVersionDirectories(
    625         new_version,
    626         existing_version.get(),
    627         install_temp_path);
    628   }
    629 
    630   return result;
    631 }
    632 
    633 void HandleOsUpgradeForBrowser(const InstallerState& installer_state,
    634                                const Product& chrome) {
    635   DCHECK(chrome.is_chrome());
    636   // Upon upgrading to Windows 8, we need to fix Chrome shortcuts and register
    637   // Chrome, so that Metro Chrome would work if Chrome is the default browser.
    638   if (base::win::GetVersion() >= base::win::VERSION_WIN8) {
    639     VLOG(1) << "Updating and registering shortcuts.";
    640     // Read master_preferences copied beside chrome.exe at install.
    641     MasterPreferences prefs(
    642         installer_state.target_path().AppendASCII(kDefaultMasterPrefs));
    643 
    644     // Unfortunately, if this is a system-level install, we can't update the
    645     // shortcuts of each individual user (this only matters if this is an OS
    646     // upgrade from XP/Vista to Win7+ as some properties are only set on
    647     // shortcuts as of Win7).
    648     // At least attempt to update potentially existing all-users shortcuts.
    649     InstallShortcutLevel level = installer_state.system_install() ?
    650         ALL_USERS : CURRENT_USER;
    651     base::FilePath chrome_exe(installer_state.target_path().Append(kChromeExe));
    652     CreateOrUpdateShortcuts(
    653         chrome_exe, chrome, prefs, level, INSTALL_SHORTCUT_REPLACE_EXISTING);
    654     RegisterChromeOnMachine(installer_state, chrome, false);
    655   }
    656 }
    657 
    658 // NOTE: Should the work done here, on Active Setup, change: kActiveSetupVersion
    659 // in install_worker.cc needs to be increased for Active Setup to invoke this
    660 // again for all users of this install.
    661 void HandleActiveSetupForBrowser(const base::FilePath& installation_root,
    662                                  const Product& chrome,
    663                                  bool force) {
    664   DCHECK(chrome.is_chrome());
    665   // Only create shortcuts on Active Setup if the first run sentinel is not
    666   // present for this user (as some shortcuts used to be installed on first
    667   // run and this could otherwise re-install shortcuts for users that have
    668   // already deleted them in the past).
    669   base::FilePath first_run_sentinel;
    670   InstallUtil::GetSentinelFilePath(
    671       chrome::kFirstRunSentinel, chrome.distribution(), &first_run_sentinel);
    672   // Decide whether to create the shortcuts or simply replace existing
    673   // shortcuts; if the decision is to create them, only shortcuts whose matching
    674   // all-users shortcut isn't present on the system will be created.
    675   InstallShortcutOperation install_operation =
    676       (!force && base::PathExists(first_run_sentinel) ?
    677            INSTALL_SHORTCUT_REPLACE_EXISTING :
    678            INSTALL_SHORTCUT_CREATE_EACH_IF_NO_SYSTEM_LEVEL);
    679 
    680   // Read master_preferences copied beside chrome.exe at install.
    681   MasterPreferences prefs(installation_root.AppendASCII(kDefaultMasterPrefs));
    682   base::FilePath chrome_exe(installation_root.Append(kChromeExe));
    683   CreateOrUpdateShortcuts(
    684       chrome_exe, chrome, prefs, CURRENT_USER, install_operation);
    685 }
    686 
    687 bool InstallFromWebstore(const std::string& app_code) {
    688   base::FilePath app_host_path(chrome_launcher_support::GetAnyAppHostPath());
    689   if (app_host_path.empty())
    690     return false;
    691 
    692   CommandLine cmd(app_host_path);
    693   cmd.AppendSwitchASCII(::switches::kInstallFromWebstore, app_code);
    694   VLOG(1) << "App install command: " << cmd.GetCommandLineString();
    695   return base::LaunchProcess(cmd, base::LaunchOptions(), NULL);
    696 }
    697 
    698 }  // namespace installer
    699