chrome/browser/extensions/default_apps.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/extensions/default_apps.h"
   6
   7 #include <set>
   8 #include <string>
   9
  10 #include "base/command_line.h"
  11 #include "base/prefs/pref_service.h"
  12 #include "base/strings/string_util.h"
  13 #include "chrome/browser/browser_process.h"
  14 #include "chrome/browser/first_run/first_run.h"
  15 #include "chrome/browser/profiles/profile.h"
  16 #include "chrome/common/chrome_switches.h"
  17 #include "chrome/common/chrome_version_info.h"
  18 #include "chrome/common/extensions/extension_constants.h"
  19 #include "chrome/common/pref_names.h"
  20 #include "components/pref_registry/pref_registry_syncable.h"
  21 #include "extensions/common/extension.h"
  22
  23 namespace {
  24
  25 // Returns true if the app was a default app in Chrome 22
  26 bool IsOldDefaultApp(const std::string& extension_id) {
  27   return extension_id == extension_misc::kGmailAppId ||
  28          extension_id == extension_misc::kGoogleSearchAppId ||
  29          extension_id == extension_misc::kYoutubeAppId;
  30 }
  31
  32 bool IsLocaleSupported() {
  33   // Don't bother installing default apps in locales where it is known that
  34   // they don't work.
  35   // TODO(rogerta): Do this check dynamically once the webstore can expose
  36   // an API. See http://crbug.com/101357
  37   const std::string& locale = g_browser_process->GetApplicationLocale();
  38   static const char* const unsupported_locales[] = {"CN", "TR", "IR"};
  39   for (size_t i = 0; i < arraysize(unsupported_locales); ++i) {
  40     if (EndsWith(locale, unsupported_locales[i], false)) {
  41       return false;
  42     }
  43   }
  44   return true;
  45 }
  46
  47 }  // namespace
  48
  49 namespace default_apps {
  50
  51 void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {
  52   registry->RegisterIntegerPref(
  53       prefs::kDefaultAppsInstallState,
  54       kUnknown,
  55       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
  56 }
  57
  58 bool Provider::ShouldInstallInProfile() {
  59   // We decide to install or not install default apps based on the following
  60   // criteria, from highest priority to lowest priority:
  61   //
  62   // - The command line option.  Tests use this option to disable installation
  63   //   of default apps in some cases.
  64   // - If the locale is not compatible with the defaults, don't install them.
  65   // - The kDefaultApps preferences value in the profile.  This value is
  66   //   usually set in the master_preferences file.
  67   bool install_apps =
  68       profile_->GetPrefs()->GetString(prefs::kDefaultApps) == "install";
  69
  70   InstallState state =
  71       static_cast<InstallState>(profile_->GetPrefs()->GetInteger(
  72           prefs::kDefaultAppsInstallState));
  73
  74   is_migration_ = (state == kProvideLegacyDefaultApps);
  75
  76   switch (state) {
  77     case kUnknown: {
  78       // Only new installations and profiles get default apps. In theory the
  79       // new profile checks should catch new installations, but that is not
  80       // always the case (http:/crbug.com/145351).
  81       chrome::VersionInfo version_info;
  82       bool is_new_profile =
  83           profile_->WasCreatedByVersionOrLater(version_info.Version().c_str());
  84       bool is_first_run = first_run::IsChromeFirstRun();
  85       if (!is_first_run && !is_new_profile)
  86         install_apps = false;
  87       break;
  88     }
  89
  90     // The old default apps were provided as external extensions and were
  91     // installed everytime Chrome was run. Thus, changing the list of default
  92     // apps affected all users. Migrate old default apps to new mechanism where
  93     // they are installed only once as INTERNAL.
  94     // TODO(grv) : remove after Q1-2013.
  95     case kProvideLegacyDefaultApps:
  96       profile_->GetPrefs()->SetInteger(
  97           prefs::kDefaultAppsInstallState,
  98           kAlreadyInstalledDefaultApps);
  99       break;
 100
 101     case kAlreadyInstalledDefaultApps:
 102     case kNeverInstallDefaultApps:
 103       install_apps = false;
 104       break;
 105     default:
 106       NOTREACHED();
 107   }
 108
 109   if (install_apps && !IsLocaleSupported())
 110     install_apps = false;
 111
 112   // Default apps are only installed on profile creation or a new chrome
 113   // download.
 114   if (state == kUnknown) {
 115     if (install_apps) {
 116       profile_->GetPrefs()->SetInteger(prefs::kDefaultAppsInstallState,
 117                                        kAlreadyInstalledDefaultApps);
 118     } else {
 119       profile_->GetPrefs()->SetInteger(prefs::kDefaultAppsInstallState,
 120                                        kNeverInstallDefaultApps);
 121     }
 122   }
 123
 124   return install_apps;
 125 }
 126
 127 Provider::Provider(Profile* profile,
 128                    VisitorInterface* service,
 129                    extensions::ExternalLoader* loader,
 130                    extensions::Manifest::Location crx_location,
 131                    extensions::Manifest::Location download_location,
 132                    int creation_flags)
 133     : extensions::ExternalProviderImpl(service, loader, profile, crx_location,
 134                                        download_location, creation_flags),
 135       profile_(profile),
 136       is_migration_(false) {
 137   DCHECK(profile);
 138   set_auto_acknowledge(true);
 139 }
 140
 141 void Provider::VisitRegisteredExtension() {
 142   if (!profile_ || !ShouldInstallInProfile()) {
 143     base::DictionaryValue* prefs = new base::DictionaryValue;
 144     SetPrefs(prefs);
 145     return;
 146   }
 147
 148   extensions::ExternalProviderImpl::VisitRegisteredExtension();
 149 }
 150
 151 void Provider::SetPrefs(base::DictionaryValue* prefs) {
 152   if (is_migration_) {
 153     std::set<std::string> new_default_apps;
 154     for (base::DictionaryValue::Iterator i(*prefs); !i.IsAtEnd(); i.Advance()) {
 155       if (!IsOldDefaultApp(i.key()))
 156         new_default_apps.insert(i.key());
 157     }
 158     // Filter out the new default apps for migrating users.
 159     for (std::set<std::string>::iterator it = new_default_apps.begin();
 160          it != new_default_apps.end(); ++it) {
 161       prefs->Remove(*it, NULL);
 162     }
 163   }
 164
 165   ExternalProviderImpl::SetPrefs(prefs);
 166 }
 167
 168 }  // namespace default_apps