src/chrome/browser/extensions/external_component_loader.cc

   1 // Copyright (c) 2013 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/external_component_loader.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/sha1.h"
   9 #include "base/strings/string_number_conversions.h"
  10 #include "chrome/browser/bookmarks/enhanced_bookmarks_features.h"
  11 #include "chrome/browser/browser_process.h"
  12 #include "chrome/browser/signin/signin_manager_factory.h"
  13 #include "chrome/common/chrome_switches.h"
  14 #include "chrome/common/extensions/extension_constants.h"
  15 #include "components/signin/core/browser/signin_manager.h"
  16
  17 // TODO(thestig): Remove after extensions are disabled on mobile.
  18 #if defined(ENABLE_EXTENSIONS)
  19 #include "chrome/browser/search/hotword_service_factory.h"
  20 #endif
  21
  22 namespace {
  23
  24 bool IsUserSignedin(Profile* profile) {
  25   SigninManagerBase* signin = SigninManagerFactory::GetForProfile(profile);
  26   return signin && !signin->GetAuthenticatedUsername().empty();
  27 }
  28
  29 }  // namespace
  30
  31 namespace extensions {
  32
  33 ExternalComponentLoader::ExternalComponentLoader(Profile* profile)
  34     : profile_(profile) {
  35 }
  36
  37 ExternalComponentLoader::~ExternalComponentLoader() {}
  38
  39 // static
  40 bool ExternalComponentLoader::IsModifiable(
  41     const extensions::Extension* extension) {
  42   if (extension->location() == extensions::Manifest::EXTERNAL_COMPONENT) {
  43     static const char* enhanced_extension_hashes[] = {
  44         "D5736E4B5CF695CB93A2FB57E4FDC6E5AFAB6FE2",  // http://crbug.com/312900
  45         "D57DE394F36DC1C3220E7604C575D29C51A6C495",  // http://crbug.com/319444
  46         "3F65507A3B39259B38C8173C6FFA3D12DF64CCE9"   // http://crbug.com/371562
  47     };
  48     std::string hash = base::SHA1HashString(extension->id());
  49     hash = base::HexEncode(hash.c_str(), hash.length());
  50     for (size_t i = 0; i < arraysize(enhanced_extension_hashes); i++)
  51       if (hash == enhanced_extension_hashes[i])
  52         return true;
  53   }
  54   return false;
  55 }
  56
  57 void ExternalComponentLoader::StartLoading() {
  58   prefs_.reset(new base::DictionaryValue());
  59   std::string appId = extension_misc::kInAppPaymentsSupportAppId;
  60   prefs_->SetString(appId + ".external_update_url",
  61                     extension_urls::GetWebstoreUpdateUrl().spec());
  62
  63 #if defined(ENABLE_EXTENSIONS)
  64   if (HotwordServiceFactory::IsHotwordAllowed(profile_)) {
  65     std::string hotwordId = extension_misc::kHotwordExtensionId;
  66     CommandLine* command_line = CommandLine::ForCurrentProcess();
  67     // TODO(amistry): Load the hotword shared module when enabling built-in
  68     // hotword detection.
  69     if (!command_line->HasSwitch(switches::kEnableExperimentalHotwording)) {
  70       prefs_->SetString(hotwordId + ".external_update_url",
  71                         extension_urls::GetWebstoreUpdateUrl().spec());
  72     }
  73   }
  74 #endif
  75
  76   UpdateBookmarksExperimentState(
  77       profile_->GetPrefs(),
  78       g_browser_process->local_state(),
  79       IsUserSignedin(profile_),
  80       BOOKMARKS_EXPERIMENT_ENABLED_FROM_SYNC_UNKNOWN);
  81   std::string ext_id;
  82   if (GetBookmarksExperimentExtensionID(profile_->GetPrefs(), &ext_id) &&
  83       !ext_id.empty()) {
  84     prefs_->SetString(ext_id + ".external_update_url",
  85                       extension_urls::GetWebstoreUpdateUrl().spec());
  86   }
  87
  88   LoadFinished();
  89 }
  90
  91 }  // namespace extensions