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