sync_helper.cc revision 868fa2fe829687343ffae624259930155e16dbd8 
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    return SYNC_TYPE_NONE;
46
47  switch (extension->GetType()) {
48    case Manifest::TYPE_EXTENSION:
49      return SYNC_TYPE_EXTENSION;
50
51    case Manifest::TYPE_USER_SCRIPT:
52      // We only want to sync user scripts with gallery update URLs.
53      if (ManifestURL::UpdatesFromGallery(extension))
54        return SYNC_TYPE_EXTENSION;
55      return SYNC_TYPE_NONE;
56
57    case Manifest::TYPE_HOSTED_APP:
58    case Manifest::TYPE_LEGACY_PACKAGED_APP:
59    case Manifest::TYPE_PLATFORM_APP:
60      return SYNC_TYPE_APP;
61
62    case Manifest::TYPE_UNKNOWN:
63    // Confusingly, themes are actually synced.
64    // TODO(yoz): Make this look less inconsistent.
65    case Manifest::TYPE_THEME:
66    case Manifest::TYPE_SHARED_MODULE:
67      return SYNC_TYPE_NONE;
68  }
69  NOTREACHED();
70  return SYNC_TYPE_NONE;
71}
72
73}  // namespace
74
75bool IsSyncable(const Extension* extension) {
76  // TODO(akalin): Figure out if we need to allow some other types.
77
78  // Default apps are not synced because otherwise they will pollute profiles
79  // that don't already have them. Specially, if a user doesn't have default
80  // apps, creates a new profile (which get default apps) and then enables sync
81  // for it, then their profile everywhere gets the default apps.
82  bool is_syncable = (extension->location() == Manifest::INTERNAL &&
83                      !extension->was_installed_by_default());
84  // Sync the chrome web store to maintain its position on the new tab page.
85  is_syncable |= (extension->id() == extension_misc::kWebStoreAppId);
86  return is_syncable;
87}
88
89bool IsSyncableExtension(const Extension* extension) {
90  return GetSyncType(extension) == SYNC_TYPE_EXTENSION;
91}
92
93bool IsSyncableApp(const Extension* extension) {
94  return GetSyncType(extension) == SYNC_TYPE_APP;
95}
96
97}  // namespace sync_helper
98}  // namespace extensions
99