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      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/search/hotword_service_factory.h"
     13 #include "chrome/browser/signin/signin_manager_factory.h"
     14 #include "chrome/common/chrome_switches.h"
     15 #include "chrome/common/extensions/extension_constants.h"
     16 #include "components/signin/core/browser/signin_manager.h"
     17 #include "extensions/common/extension_urls.h"
     18 
     19 namespace extensions {
     20 
     21 ExternalComponentLoader::ExternalComponentLoader(Profile* profile)
     22     : profile_(profile) {
     23 }
     24 
     25 ExternalComponentLoader::~ExternalComponentLoader() {}
     26 
     27 // static
     28 bool ExternalComponentLoader::IsModifiable(const Extension* extension) {
     29   if (extension->location() == Manifest::EXTERNAL_COMPONENT) {
     30     static const char* enhanced_extension_hashes[] = {
     31         "D5736E4B5CF695CB93A2FB57E4FDC6E5AFAB6FE2",  // http://crbug.com/312900
     32         "D57DE394F36DC1C3220E7604C575D29C51A6C495",  // http://crbug.com/319444
     33         "3F65507A3B39259B38C8173C6FFA3D12DF64CCE9"   // http://crbug.com/371562
     34     };
     35     std::string hash = base::SHA1HashString(extension->id());
     36     hash = base::HexEncode(hash.c_str(), hash.length());
     37     for (size_t i = 0; i < arraysize(enhanced_extension_hashes); i++)
     38       if (hash == enhanced_extension_hashes[i])
     39         return true;
     40   }
     41   return false;
     42 }
     43 
     44 void ExternalComponentLoader::StartLoading() {
     45   prefs_.reset(new base::DictionaryValue());
     46   std::string appId = extension_misc::kInAppPaymentsSupportAppId;
     47   prefs_->SetString(appId + ".external_update_url",
     48                     extension_urls::GetWebstoreUpdateUrl().spec());
     49 
     50   if (HotwordServiceFactory::IsHotwordAllowed(profile_)) {
     51     std::string hotwordId = extension_misc::kHotwordExtensionId;
     52     CommandLine* command_line = CommandLine::ForCurrentProcess();
     53     if (command_line->HasSwitch(switches::kEnableExperimentalHotwording)) {
     54       hotwordId = extension_misc::kHotwordSharedModuleId;
     55     }
     56     prefs_->SetString(hotwordId + ".external_update_url",
     57                       extension_urls::GetWebstoreUpdateUrl().spec());
     58   }
     59 
     60   InitBookmarksExperimentState(profile_);
     61 
     62   std::string ext_id;
     63   if (GetBookmarksExperimentExtensionID(profile_->GetPrefs(), &ext_id) &&
     64       !ext_id.empty()) {
     65     prefs_->SetString(ext_id + ".external_update_url",
     66                       extension_urls::GetWebstoreUpdateUrl().spec());
     67   }
     68 
     69   LoadFinished();
     70 }
     71 
     72 }  // namespace extensions
     73