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