1 // Copyright (c) 2012 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/default_apps.h"
6
7 #include <set>
8 #include <string>
9
10 #include "base/command_line.h"
11 #include "base/prefs/pref_service.h"
12 #include "base/strings/string_util.h"
13 #include "chrome/browser/browser_process.h"
14 #include "chrome/browser/first_run/first_run.h"
15 #include "chrome/browser/profiles/profile.h"
16 #include "chrome/common/chrome_switches.h"
17 #include "chrome/common/chrome_version_info.h"
18 #include "chrome/common/extensions/extension_constants.h"
19 #include "chrome/common/pref_names.h"
20 #include "components/pref_registry/pref_registry_syncable.h"
21 #include "extensions/common/extension.h"
22
23 namespace {
24
25 // Returns true if the app was a default app in Chrome 22
IsOldDefaultApp(const std::string & extension_id)26 bool IsOldDefaultApp(const std::string& extension_id) {
27 return extension_id == extension_misc::kGmailAppId ||
28 extension_id == extension_misc::kGoogleSearchAppId ||
29 extension_id == extension_misc::kYoutubeAppId;
30 }
31
IsLocaleSupported()32 bool IsLocaleSupported() {
33 // Don't bother installing default apps in locales where it is known that
34 // they don't work.
35 // TODO(rogerta): Do this check dynamically once the webstore can expose
36 // an API. See http://crbug.com/101357
37 const std::string& locale = g_browser_process->GetApplicationLocale();
38 static const char* unsupported_locales[] = {"CN", "TR", "IR"};
39 for (size_t i = 0; i < arraysize(unsupported_locales); ++i) {
40 if (EndsWith(locale, unsupported_locales[i], false)) {
41 return false;
42 }
43 }
44 return true;
45 }
46
47 } // namespace
48
49 namespace default_apps {
50
RegisterProfilePrefs(user_prefs::PrefRegistrySyncable * registry)51 void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {
52 registry->RegisterIntegerPref(
53 prefs::kDefaultAppsInstallState,
54 kUnknown,
55 user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
56 }
57
ShouldInstallInProfile()58 bool Provider::ShouldInstallInProfile() {
59 // We decide to install or not install default apps based on the following
60 // criteria, from highest priority to lowest priority:
61 //
62 // - The command line option. Tests use this option to disable installation
63 // of default apps in some cases.
64 // - If the locale is not compatible with the defaults, don't install them.
65 // - The kDefaultApps preferences value in the profile. This value is
66 // usually set in the master_preferences file.
67 bool install_apps =
68 profile_->GetPrefs()->GetString(prefs::kDefaultApps) == "install";
69
70 InstallState state =
71 static_cast<InstallState>(profile_->GetPrefs()->GetInteger(
72 prefs::kDefaultAppsInstallState));
73
74 is_migration_ = (state == kProvideLegacyDefaultApps);
75
76 switch (state) {
77 case kUnknown: {
78 // Only new installations and profiles get default apps. In theory the
79 // new profile checks should catch new installations, but that is not
80 // always the case (http:/crbug.com/145351).
81 chrome::VersionInfo version_info;
82 bool is_new_profile =
83 profile_->WasCreatedByVersionOrLater(version_info.Version().c_str());
84 bool is_first_run = first_run::IsChromeFirstRun();
85 if (!is_first_run && !is_new_profile)
86 install_apps = false;
87 break;
88 }
89
90 // The old default apps were provided as external extensions and were
91 // installed everytime Chrome was run. Thus, changing the list of default
92 // apps affected all users. Migrate old default apps to new mechanism where
93 // they are installed only once as INTERNAL.
94 // TODO(grv) : remove after Q1-2013.
95 case kProvideLegacyDefaultApps:
96 profile_->GetPrefs()->SetInteger(
97 prefs::kDefaultAppsInstallState,
98 kAlreadyInstalledDefaultApps);
99 break;
100
101 case kAlreadyInstalledDefaultApps:
102 case kNeverInstallDefaultApps:
103 install_apps = false;
104 break;
105 default:
106 NOTREACHED();
107 }
108
109 if (install_apps && !IsLocaleSupported())
110 install_apps = false;
111
112 // Default apps are only installed on profile creation or a new chrome
113 // download.
114 if (state == kUnknown) {
115 if (install_apps) {
116 profile_->GetPrefs()->SetInteger(prefs::kDefaultAppsInstallState,
117 kAlreadyInstalledDefaultApps);
118 } else {
119 profile_->GetPrefs()->SetInteger(prefs::kDefaultAppsInstallState,
120 kNeverInstallDefaultApps);
121 }
122 }
123
124 return install_apps;
125 }
126
Provider(Profile * profile,VisitorInterface * service,extensions::ExternalLoader * loader,extensions::Manifest::Location crx_location,extensions::Manifest::Location download_location,int creation_flags)127 Provider::Provider(Profile* profile,
128 VisitorInterface* service,
129 extensions::ExternalLoader* loader,
130 extensions::Manifest::Location crx_location,
131 extensions::Manifest::Location download_location,
132 int creation_flags)
133 : extensions::ExternalProviderImpl(service, loader, profile, crx_location,
134 download_location, creation_flags),
135 profile_(profile),
136 is_migration_(false) {
137 DCHECK(profile);
138 set_auto_acknowledge(true);
139 }
140
VisitRegisteredExtension()141 void Provider::VisitRegisteredExtension() {
142 if (!profile_ || !ShouldInstallInProfile()) {
143 base::DictionaryValue* prefs = new base::DictionaryValue;
144 SetPrefs(prefs);
145 return;
146 }
147
148 extensions::ExternalProviderImpl::VisitRegisteredExtension();
149 }
150
SetPrefs(base::DictionaryValue * prefs)151 void Provider::SetPrefs(base::DictionaryValue* prefs) {
152 if (is_migration_) {
153 std::set<std::string> new_default_apps;
154 for (base::DictionaryValue::Iterator i(*prefs); !i.IsAtEnd(); i.Advance()) {
155 if (!IsOldDefaultApp(i.key()))
156 new_default_apps.insert(i.key());
157 }
158 // Filter out the new default apps for migrating users.
159 for (std::set<std::string>::iterator it = new_default_apps.begin();
160 it != new_default_apps.end(); ++it) {
161 prefs->Remove(*it, NULL);
162 }
163 }
164
165 ExternalProviderImpl::SetPrefs(prefs);
166 }
167
168 } // namespace default_apps
169