sync_helper.cc revision eb525c5499e34cc9c4b825d6d9e75bb07cc06ace 
1// Copyright 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/common/extensions/sync_helper.h"
6
7#include "base/logging.h"
8#include "chrome/common/extensions/api/plugins/plugins_handler.h"
9#include "chrome/common/extensions/extension.h"
10#include "chrome/common/extensions/extension_constants.h"
11#include "chrome/common/extensions/manifest.h"
12#include "chrome/common/extensions/manifest_url_handler.h"
13
14namespace extensions {
15namespace sync_helper {
16
17namespace {
18
19enum SyncType {
20  SYNC_TYPE_NONE = 0,
21  SYNC_TYPE_EXTENSION,
22  SYNC_TYPE_APP
23};
24
25SyncType GetSyncType(const Extension* extension) {
26  if (!IsSyncable(extension)) {
27    // We have a non-standard location.
28    return SYNC_TYPE_NONE;
29  }
30
31  // Disallow extensions with non-gallery auto-update URLs for now.
32  //
33  // TODO(akalin): Relax this restriction once we've put in UI to
34  // approve synced extensions.
35  if (!ManifestURL::GetUpdateURL(extension).is_empty() &&
36      !ManifestURL::UpdatesFromGallery(extension)) {
37    return SYNC_TYPE_NONE;
38  }
39
40  // Disallow extensions with native code plugins.
41  //
42  // TODO(akalin): Relax this restriction once we've put in UI to
43  // approve synced extensions.
44  if (PluginInfo::HasPlugins(extension) ||
45      extension->HasAPIPermission(APIPermission::kPlugin)) {
46    return SYNC_TYPE_NONE;
47  }
48
49  switch (extension->GetType()) {
50    case Manifest::TYPE_EXTENSION:
51      return SYNC_TYPE_EXTENSION;
52
53    case Manifest::TYPE_USER_SCRIPT:
54      // We only want to sync user scripts with gallery update URLs.
55      if (ManifestURL::UpdatesFromGallery(extension))
56        return SYNC_TYPE_EXTENSION;
57      return SYNC_TYPE_NONE;
58
59    case Manifest::TYPE_HOSTED_APP:
60    case Manifest::TYPE_LEGACY_PACKAGED_APP:
61    case Manifest::TYPE_PLATFORM_APP:
62      return SYNC_TYPE_APP;
63
64    case Manifest::TYPE_UNKNOWN:
65    // Confusingly, themes are actually synced.
66    // TODO(yoz): Make this look less inconsistent.
67    case Manifest::TYPE_THEME:
68    case Manifest::TYPE_SHARED_MODULE:
69      return SYNC_TYPE_NONE;
70  }
71  NOTREACHED();
72  return SYNC_TYPE_NONE;
73}
74
75}  // namespace
76
77bool IsSyncable(const Extension* extension) {
78  // TODO(akalin): Figure out if we need to allow some other types.
79
80  // Default apps are not synced because otherwise they will pollute profiles
81  // that don't already have them. Specially, if a user doesn't have default
82  // apps, creates a new profile (which get default apps) and then enables sync
83  // for it, then their profile everywhere gets the default apps.
84  bool is_syncable = (extension->location() == Manifest::INTERNAL &&
85                      !extension->was_installed_by_default());
86  // Sync the chrome web store to maintain its position on the new tab page.
87  is_syncable |= (extension->id() == extension_misc::kWebStoreAppId);
88  // Sync the chrome component app to maintain its position on the app list.
89  is_syncable |= (extension->id() == extension_misc::kChromeAppId);
90  return is_syncable;
91}
92
93bool IsSyncableExtension(const Extension* extension) {
94  return GetSyncType(extension) == SYNC_TYPE_EXTENSION;
95}
96
97bool IsSyncableApp(const Extension* extension) {
98  return GetSyncType(extension) == SYNC_TYPE_APP;
99}
100
101}  // namespace sync_helper
102}  // namespace extensions
103