chrome/browser/extensions/extension_system_impl.cc

   1 // Copyright 2014 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/extension_system_impl.h"
   6
   7 #include "base/base_switches.h"
   8 #include "base/bind.h"
   9 #include "base/command_line.h"
  10 #include "base/files/file_path.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "base/strings/string_tokenizer.h"
  13 #include "base/trace_event/trace_event.h"
  14 #include "chrome/browser/browser_process.h"
  15 #include "chrome/browser/extensions/chrome_app_sorting.h"
  16 #include "chrome/browser/extensions/chrome_content_verifier_delegate.h"
  17 #include "chrome/browser/extensions/component_loader.h"
  18 #include "chrome/browser/extensions/extension_error_reporter.h"
  19 #include "chrome/browser/extensions/extension_management.h"
  20 #include "chrome/browser/extensions/extension_service.h"
  21 #include "chrome/browser/extensions/extension_system_factory.h"
  22 #include "chrome/browser/extensions/extension_util.h"
  23 #include "chrome/browser/extensions/install_verifier.h"
  24 #include "chrome/browser/extensions/navigation_observer.h"
  25 #include "chrome/browser/extensions/shared_module_service.h"
  26 #include "chrome/browser/extensions/shared_user_script_master.h"
  27 #include "chrome/browser/extensions/state_store_notification_observer.h"
  28 #include "chrome/browser/extensions/unpacked_installer.h"
  29 #include "chrome/browser/profiles/profile.h"
  30 #include "chrome/browser/profiles/profile_manager.h"
  31 #include "chrome/browser/ui/webui/extensions/extension_icon_source.h"
  32 #include "chrome/common/chrome_switches.h"
  33 #include "chrome/common/extensions/features/feature_channel.h"
  34 #include "content/public/browser/browser_thread.h"
  35 #include "content/public/browser/url_data_source.h"
  36 #include "extensions/browser/content_verifier.h"
  37 #include "extensions/browser/extension_pref_store.h"
  38 #include "extensions/browser/extension_pref_value_map.h"
  39 #include "extensions/browser/extension_pref_value_map_factory.h"
  40 #include "extensions/browser/extension_prefs.h"
  41 #include "extensions/browser/extension_registry.h"
  42 #include "extensions/browser/info_map.h"
  43 #include "extensions/browser/quota_service.h"
  44 #include "extensions/browser/runtime_data.h"
  45 #include "extensions/browser/state_store.h"
  46 #include "extensions/common/constants.h"
  47
  48 #if defined(ENABLE_NOTIFICATIONS)
  49 #include "chrome/browser/notifications/notifier_state_tracker.h"
  50 #include "chrome/browser/notifications/notifier_state_tracker_factory.h"
  51 #include "ui/message_center/notifier_settings.h"
  52 #endif
  53
  54 #if defined(OS_CHROMEOS)
  55 #include "chrome/browser/app_mode/app_mode_utils.h"
  56 #include "chrome/browser/chromeos/extensions/device_local_account_management_policy_provider.h"
  57 #include "chrome/browser/chromeos/policy/device_local_account.h"
  58 #include "chromeos/chromeos_switches.h"
  59 #include "chromeos/login/login_state.h"
  60 #include "components/user_manager/user.h"
  61 #include "components/user_manager/user_manager.h"
  62 #endif
  63
  64 using content::BrowserThread;
  65
  66 // Statistics are logged to UMA with this string as part of histogram name. They
  67 // can all be found under Extensions.Database.Open.<client>. Changing this needs
  68 // to synchronize with histograms.xml, AND will also become incompatible with
  69 // older browsers still reporting the previous values.
  70 const char kStateDatabaseUMAClientName[] = "State";
  71 const char kRulesDatabaseUMAClientName[] = "Rules";
  72
  73 namespace extensions {
  74
  75 //
  76 // ExtensionSystemImpl::Shared
  77 //
  78
  79 ExtensionSystemImpl::Shared::Shared(Profile* profile)
  80     : profile_(profile) {
  81 }
  82
  83 ExtensionSystemImpl::Shared::~Shared() {
  84 }
  85
  86 void ExtensionSystemImpl::Shared::InitPrefs() {
  87   // Two state stores. The latter, which contains declarative rules, must be
  88   // loaded immediately so that the rules are ready before we issue network
  89   // requests.
  90   state_store_.reset(new StateStore(
  91       profile_, kStateDatabaseUMAClientName,
  92       profile_->GetPath().AppendASCII(extensions::kStateStoreName), true));
  93   state_store_notification_observer_.reset(
  94       new StateStoreNotificationObserver(state_store_.get()));
  95
  96   rules_store_.reset(new StateStore(
  97       profile_, kRulesDatabaseUMAClientName,
  98       profile_->GetPath().AppendASCII(extensions::kRulesStoreName), false));
  99
 100 #if defined(OS_CHROMEOS)
 101   const user_manager::User* user =
 102       user_manager::UserManager::Get()->GetActiveUser();
 103   policy::DeviceLocalAccount::Type device_local_account_type;
 104   if (user && policy::IsDeviceLocalAccountUser(user->email(),
 105                                                &device_local_account_type)) {
 106     device_local_account_management_policy_provider_.reset(
 107         new chromeos::DeviceLocalAccountManagementPolicyProvider(
 108             device_local_account_type));
 109   }
 110 #endif  // defined(OS_CHROMEOS)
 111 }
 112
 113 void ExtensionSystemImpl::Shared::RegisterManagementPolicyProviders() {
 114   management_policy_->RegisterProviders(
 115       ExtensionManagementFactory::GetForBrowserContext(profile_)
 116           ->GetProviders());
 117
 118 #if defined(OS_CHROMEOS)
 119   if (device_local_account_management_policy_provider_) {
 120     management_policy_->RegisterProvider(
 121         device_local_account_management_policy_provider_.get());
 122   }
 123 #endif  // defined(OS_CHROMEOS)
 124
 125   management_policy_->RegisterProvider(InstallVerifier::Get(profile_));
 126 }
 127
 128 void ExtensionSystemImpl::Shared::Init(bool extensions_enabled) {
 129   TRACE_EVENT0("browser,startup", "ExtensionSystemImpl::Shared::Init");
 130   const base::CommandLine* command_line =
 131       base::CommandLine::ForCurrentProcess();
 132
 133   navigation_observer_.reset(new NavigationObserver(profile_));
 134
 135   bool allow_noisy_errors = !command_line->HasSwitch(switches::kNoErrorDialogs);
 136   ExtensionErrorReporter::Init(allow_noisy_errors);
 137
 138   content_verifier_ = new ContentVerifier(
 139       profile_, new ChromeContentVerifierDelegate(profile_));
 140
 141   shared_user_script_master_.reset(new SharedUserScriptMaster(profile_));
 142
 143   // ExtensionService depends on RuntimeData.
 144   runtime_data_.reset(new RuntimeData(ExtensionRegistry::Get(profile_)));
 145
 146   bool autoupdate_enabled = !profile_->IsGuestSession() &&
 147                             !profile_->IsSystemProfile();
 148 #if defined(OS_CHROMEOS)
 149   if (!extensions_enabled)
 150     autoupdate_enabled = false;
 151 #endif  // defined(OS_CHROMEOS)
 152   extension_service_.reset(new ExtensionService(
 153       profile_, base::CommandLine::ForCurrentProcess(),
 154       profile_->GetPath().AppendASCII(extensions::kInstallDirectoryName),
 155       ExtensionPrefs::Get(profile_), Blacklist::Get(profile_),
 156       autoupdate_enabled, extensions_enabled, &ready_));
 157
 158   // These services must be registered before the ExtensionService tries to
 159   // load any extensions.
 160   {
 161     InstallVerifier::Get(profile_)->Init();
 162     ContentVerifierDelegate::Mode mode =
 163         ChromeContentVerifierDelegate::GetDefaultMode();
 164 #if defined(OS_CHROMEOS)
 165     mode = std::max(mode, ContentVerifierDelegate::BOOTSTRAP);
 166 #endif  // defined(OS_CHROMEOS)
 167     if (mode >= ContentVerifierDelegate::BOOTSTRAP)
 168       content_verifier_->Start();
 169     info_map()->SetContentVerifier(content_verifier_.get());
 170
 171     management_policy_.reset(new ManagementPolicy);
 172     RegisterManagementPolicyProviders();
 173   }
 174
 175   bool skip_session_extensions = false;
 176 #if defined(OS_CHROMEOS)
 177   // Skip loading session extensions if we are not in a user session.
 178   skip_session_extensions = !chromeos::LoginState::Get()->IsUserLoggedIn();
 179   if (chrome::IsRunningInForcedAppMode()) {
 180     extension_service_->component_loader()->
 181         AddDefaultComponentExtensionsForKioskMode(skip_session_extensions);
 182   } else {
 183     extension_service_->component_loader()->AddDefaultComponentExtensions(
 184         skip_session_extensions);
 185   }
 186 #else
 187   extension_service_->component_loader()->AddDefaultComponentExtensions(
 188       skip_session_extensions);
 189 #endif
 190   if (command_line->HasSwitch(switches::kLoadComponentExtension)) {
 191     base::CommandLine::StringType path_list =
 192         command_line->GetSwitchValueNative(switches::kLoadComponentExtension);
 193     base::StringTokenizerT<base::CommandLine::StringType,
 194                            base::CommandLine::StringType::const_iterator>
 195         t(path_list, FILE_PATH_LITERAL(","));
 196     while (t.GetNext()) {
 197       // Load the component extension manifest synchronously.
 198       // Blocking the UI thread is acceptable here since
 199       // this flag designated for developers.
 200       base::ThreadRestrictions::ScopedAllowIO allow_io;
 201       extension_service_->component_loader()->AddOrReplace(
 202           base::FilePath(t.token()));
 203     }
 204   }
 205
 206   app_sorting_.reset(new ChromeAppSorting(profile_));
 207
 208   extension_service_->Init();
 209
 210   // Make the chrome://extension-icon/ resource available.
 211   content::URLDataSource::Add(profile_, new ExtensionIconSource(profile_));
 212
 213   quota_service_.reset(new QuotaService);
 214
 215   if (extensions_enabled) {
 216     // Load any extensions specified with --load-extension.
 217     // TODO(yoz): Seems like this should move into ExtensionService::Init.
 218     // But maybe it's no longer important.
 219     if (command_line->HasSwitch(switches::kLoadExtension)) {
 220       base::CommandLine::StringType path_list =
 221           command_line->GetSwitchValueNative(switches::kLoadExtension);
 222       base::StringTokenizerT<base::CommandLine::StringType,
 223                              base::CommandLine::StringType::const_iterator>
 224           t(path_list, FILE_PATH_LITERAL(","));
 225       while (t.GetNext()) {
 226         std::string extension_id;
 227         UnpackedInstaller::Create(extension_service_.get())->
 228             LoadFromCommandLine(base::FilePath(t.token()), &extension_id);
 229       }
 230     }
 231   }
 232 }
 233
 234 void ExtensionSystemImpl::Shared::Shutdown() {
 235   if (content_verifier_.get())
 236     content_verifier_->Shutdown();
 237   if (extension_service_)
 238     extension_service_->Shutdown();
 239 }
 240
 241 StateStore* ExtensionSystemImpl::Shared::state_store() {
 242   return state_store_.get();
 243 }
 244
 245 StateStore* ExtensionSystemImpl::Shared::rules_store() {
 246   return rules_store_.get();
 247 }
 248
 249 ExtensionService* ExtensionSystemImpl::Shared::extension_service() {
 250   return extension_service_.get();
 251 }
 252
 253 RuntimeData* ExtensionSystemImpl::Shared::runtime_data() {
 254   return runtime_data_.get();
 255 }
 256
 257 ManagementPolicy* ExtensionSystemImpl::Shared::management_policy() {
 258   return management_policy_.get();
 259 }
 260
 261 SharedUserScriptMaster*
 262 ExtensionSystemImpl::Shared::shared_user_script_master() {
 263   return shared_user_script_master_.get();
 264 }
 265
 266 InfoMap* ExtensionSystemImpl::Shared::info_map() {
 267   if (!extension_info_map_.get())
 268     extension_info_map_ = new InfoMap();
 269   return extension_info_map_.get();
 270 }
 271
 272 QuotaService* ExtensionSystemImpl::Shared::quota_service() {
 273   return quota_service_.get();
 274 }
 275
 276 AppSorting* ExtensionSystemImpl::Shared::app_sorting() {
 277   return app_sorting_.get();
 278 }
 279
 280 ContentVerifier* ExtensionSystemImpl::Shared::content_verifier() {
 281   return content_verifier_.get();
 282 }
 283
 284 //
 285 // ExtensionSystemImpl
 286 //
 287
 288 ExtensionSystemImpl::ExtensionSystemImpl(Profile* profile)
 289     : profile_(profile) {
 290   shared_ = ExtensionSystemSharedFactory::GetForBrowserContext(profile);
 291
 292   if (!profile->IsOffTheRecord()) {
 293     shared_->InitPrefs();
 294   }
 295 }
 296
 297 ExtensionSystemImpl::~ExtensionSystemImpl() {
 298 }
 299
 300 void ExtensionSystemImpl::Shutdown() {
 301 }
 302
 303 void ExtensionSystemImpl::InitForRegularProfile(bool extensions_enabled) {
 304   TRACE_EVENT0("browser,startup", "ExtensionSystemImpl::InitForRegularProfile");
 305   DCHECK(!profile_->IsOffTheRecord());
 306   if (shared_user_script_master() || extension_service())
 307     return;  // Already initialized.
 308
 309   // The InfoMap needs to be created before the ProcessManager.
 310   shared_->info_map();
 311   shared_->Init(extensions_enabled);
 312 }
 313
 314 ExtensionService* ExtensionSystemImpl::extension_service() {
 315   return shared_->extension_service();
 316 }
 317
 318 RuntimeData* ExtensionSystemImpl::runtime_data() {
 319   return shared_->runtime_data();
 320 }
 321
 322 ManagementPolicy* ExtensionSystemImpl::management_policy() {
 323   return shared_->management_policy();
 324 }
 325
 326 SharedUserScriptMaster* ExtensionSystemImpl::shared_user_script_master() {
 327   return shared_->shared_user_script_master();
 328 }
 329
 330 StateStore* ExtensionSystemImpl::state_store() {
 331   return shared_->state_store();
 332 }
 333
 334 StateStore* ExtensionSystemImpl::rules_store() {
 335   return shared_->rules_store();
 336 }
 337
 338 InfoMap* ExtensionSystemImpl::info_map() { return shared_->info_map(); }
 339
 340 const OneShotEvent& ExtensionSystemImpl::ready() const {
 341   return shared_->ready();
 342 }
 343
 344 QuotaService* ExtensionSystemImpl::quota_service() {
 345   return shared_->quota_service();
 346 }
 347
 348 AppSorting* ExtensionSystemImpl::app_sorting() {
 349   return shared_->app_sorting();
 350 }
 351
 352 ContentVerifier* ExtensionSystemImpl::content_verifier() {
 353   return shared_->content_verifier();
 354 }
 355
 356 scoped_ptr<ExtensionSet> ExtensionSystemImpl::GetDependentExtensions(
 357     const Extension* extension) {
 358   return extension_service()->shared_module_service()->GetDependentExtensions(
 359       extension);
 360 }
 361
 362 void ExtensionSystemImpl::RegisterExtensionWithRequestContexts(
 363     const Extension* extension,
 364     const base::Closure& callback) {
 365   base::Time install_time;
 366   if (extension->location() != Manifest::COMPONENT) {
 367     install_time = ExtensionPrefs::Get(profile_)->
 368         GetInstallTime(extension->id());
 369   }
 370   bool incognito_enabled = util::IsIncognitoEnabled(extension->id(), profile_);
 371
 372   bool notifications_disabled = false;
 373 #if defined(ENABLE_NOTIFICATIONS)
 374   message_center::NotifierId notifier_id(
 375       message_center::NotifierId::APPLICATION,
 376       extension->id());
 377
 378   NotifierStateTracker* notifier_state_tracker =
 379       NotifierStateTrackerFactory::GetForProfile(profile_);
 380   notifications_disabled =
 381       !notifier_state_tracker->IsNotifierEnabled(notifier_id);
 382 #endif
 383
 384   BrowserThread::PostTaskAndReply(
 385       BrowserThread::IO, FROM_HERE,
 386       base::Bind(&InfoMap::AddExtension, info_map(),
 387                  make_scoped_refptr(extension), install_time, incognito_enabled,
 388                  notifications_disabled),
 389       callback);
 390 }
 391
 392 void ExtensionSystemImpl::UnregisterExtensionWithRequestContexts(
 393     const std::string& extension_id,
 394     const UnloadedExtensionInfo::Reason reason) {
 395   BrowserThread::PostTask(
 396       BrowserThread::IO,
 397       FROM_HERE,
 398       base::Bind(&InfoMap::RemoveExtension, info_map(), extension_id, reason));
 399 }
 400
 401 }  // namespace extensions