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
19namespace extensions {
20
21ExternalComponentLoader::ExternalComponentLoader(Profile* profile)
22    : profile_(profile) {
23}
24
25ExternalComponentLoader::~ExternalComponentLoader() {}
26
27// static
28bool 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
44void 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