src/chrome/browser/pepper_flash_settings_manager.cc

   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/pepper_flash_settings_manager.h"
   6
   7 #include <map>
   8 #include <utility>
   9 #include <vector>
  10
  11 #include "base/bind.h"
  12 #include "base/compiler_specific.h"
  13 #include "base/file_util.h"
  14 #include "base/prefs/pref_service.h"
  15 #include "base/sequenced_task_runner_helpers.h"
  16 #include "base/strings/utf_string_conversions.h"
  17 #include "chrome/browser/plugins/plugin_prefs.h"
  18 #include "chrome/browser/profiles/profile.h"
  19 #include "chrome/browser/renderer_host/pepper/device_id_fetcher.h"
  20 #include "chrome/common/pref_names.h"
  21 #include "components/user_prefs/pref_registry_syncable.h"
  22 #include "content/public/browser/browser_context.h"
  23 #include "content/public/browser/browser_thread.h"
  24 #include "content/public/browser/pepper_flash_settings_helper.h"
  25 #include "content/public/browser/plugin_service.h"
  26 #include "content/public/common/content_constants.h"
  27 #include "content/public/common/webplugininfo.h"
  28 #include "ipc/ipc_channel.h"
  29 #include "ipc/ipc_listener.h"
  30 #include "ppapi/proxy/ppapi_messages.h"
  31 #include "url/gurl.h"
  32
  33 using content::BrowserThread;
  34
  35 class PepperFlashSettingsManager::Core
  36     : public IPC::Listener,
  37       public base::RefCountedThreadSafe<Core, BrowserThread::DeleteOnIOThread> {
  38  public:
  39   Core(base::WeakPtr<PepperFlashSettingsManager> manager,
  40        content::BrowserContext* browser_context);
  41
  42   void Initialize();
  43
  44   // Notifies the core that it has been detached. Afterwards, no method should
  45   // be called any more.
  46   void Detach();
  47
  48   void DeauthorizeContentLicenses(uint32 request_id);
  49   void GetPermissionSettings(
  50       uint32 request_id,
  51       PP_Flash_BrowserOperations_SettingType setting_type);
  52   void SetDefaultPermission(
  53       uint32 request_id,
  54       PP_Flash_BrowserOperations_SettingType setting_type,
  55       PP_Flash_BrowserOperations_Permission permission,
  56       bool clear_site_specific);
  57   void SetSitePermission(uint32 request_id,
  58                          PP_Flash_BrowserOperations_SettingType setting_type,
  59                          const ppapi::FlashSiteSettings& sites);
  60   void GetSitesWithData(uint32 request_id);
  61   void ClearSiteData(uint32 request_id,
  62                      const std::string& site,
  63                      uint64 flags,
  64                      uint64 max_age);
  65
  66   // IPC::Listener implementation.
  67   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
  68   virtual void OnChannelError() OVERRIDE;
  69
  70  private:
  71   friend struct BrowserThread::DeleteOnThread<BrowserThread::IO>;
  72   friend class base::DeleteHelper<Core>;
  73
  74   enum RequestType {
  75     INVALID_REQUEST_TYPE = 0,
  76     DEAUTHORIZE_CONTENT_LICENSES,
  77     GET_PERMISSION_SETTINGS,
  78     SET_DEFAULT_PERMISSION,
  79     SET_SITE_PERMISSION,
  80     GET_SITES_WITH_DATA,
  81     CLEAR_SITE_DATA,
  82   };
  83
  84   enum State {
  85     STATE_UNINITIALIZED = 0,
  86     STATE_INITIALIZED,
  87     STATE_ERROR,
  88     STATE_DETACHED,
  89   };
  90
  91   struct PendingRequest {
  92     PendingRequest()
  93         : id(0),
  94           type(INVALID_REQUEST_TYPE),
  95           setting_type(PP_FLASH_BROWSEROPERATIONS_SETTINGTYPE_CAMERAMIC),
  96           permission(PP_FLASH_BROWSEROPERATIONS_PERMISSION_DEFAULT),
  97           clear_site_specific(false),
  98           flags(0),
  99           max_age(0) {
 100     }
 101
 102     uint32 id;
 103     RequestType type;
 104
 105     // Used by GET_PERMISSION_SETTINGS, SET_DEFAULT_PERMISSION and
 106     // SET_SITE_PERMISSION.
 107     PP_Flash_BrowserOperations_SettingType setting_type;
 108
 109     // Used by SET_DEFAULT_PERMISSION.
 110     PP_Flash_BrowserOperations_Permission permission;
 111     bool clear_site_specific;
 112
 113     // Used by SET_SITE_PERMISSION.
 114     ppapi::FlashSiteSettings sites;
 115
 116     // Used by CLEAR_SITE_DATA
 117     std::string site;
 118     uint64 flags;
 119     uint64 max_age;
 120   };
 121
 122   virtual ~Core();
 123
 124   void ConnectToChannel(bool success, const IPC::ChannelHandle& handle);
 125
 126   void InitializeOnIOThread();
 127   void DeauthorizeContentLicensesOnIOThread(uint32 request_id);
 128   void DeauthorizeContentLicensesOnBlockingPool(
 129       uint32 request_id,
 130       const base::FilePath& profile_path);
 131   void DeauthorizeContentLicensesInPlugin(uint32 request_id, bool success);
 132   void GetPermissionSettingsOnIOThread(
 133       uint32 request_id,
 134       PP_Flash_BrowserOperations_SettingType setting_type);
 135   void SetDefaultPermissionOnIOThread(
 136       uint32 request_id,
 137       PP_Flash_BrowserOperations_SettingType setting_type,
 138       PP_Flash_BrowserOperations_Permission permission,
 139       bool clear_site_specific);
 140   void SetSitePermissionOnIOThread(
 141       uint32 request_id,
 142       PP_Flash_BrowserOperations_SettingType setting_type,
 143       const ppapi::FlashSiteSettings& sites);
 144   void GetSitesWithDataOnIOThread(uint32 request_id);
 145   void ClearSiteDataOnIOThread(uint32 request_id,
 146                                const std::string& site,
 147                                uint64 flags,
 148                                uint64 max_age);
 149   void DetachOnIOThread();
 150
 151   void NotifyErrorFromIOThread();
 152
 153   void NotifyDeauthorizeContentLicensesCompleted(uint32 request_id,
 154                                                  bool success);
 155   void NotifyGetPermissionSettingsCompleted(
 156       uint32 request_id,
 157       bool success,
 158       PP_Flash_BrowserOperations_Permission default_permission,
 159       const ppapi::FlashSiteSettings& sites);
 160   void NotifySetDefaultPermissionCompleted(uint32 request_id, bool success);
 161   void NotifySetSitePermissionCompleted(uint32 request_id, bool success);
 162   void NotifyGetSitesWithDataCompleted(uint32 request_id,
 163                                        const std::vector<std::string>& sites);
 164   void NotifyClearSiteDataCompleted(uint32 request_id, bool success);
 165
 166   void NotifyError(
 167       const std::vector<std::pair<uint32, RequestType> >& notifications);
 168
 169   // Message handlers.
 170   void OnDeauthorizeContentLicensesResult(uint32 request_id, bool success);
 171   void OnGetPermissionSettingsResult(
 172       uint32 request_id,
 173       bool success,
 174       PP_Flash_BrowserOperations_Permission default_permission,
 175       const ppapi::FlashSiteSettings& sites);
 176   void OnSetDefaultPermissionResult(uint32 request_id, bool success);
 177   void OnSetSitePermissionResult(uint32 request_id, bool success);
 178   void OnGetSitesWithDataResult(uint32 request_id,
 179                                 const std::vector<std::string>& sites);
 180   void OnClearSiteDataResult(uint32 request_id, bool success);
 181
 182   // Used only on the UI thread.
 183   base::WeakPtr<PepperFlashSettingsManager> manager_;
 184
 185   // Used only on the I/O thread.
 186   base::FilePath plugin_data_path_;
 187
 188   // The channel is NULL until we have opened a connection to the broker
 189   // process. Used only on the I/O thread.
 190   scoped_ptr<IPC::Channel> channel_;
 191
 192   // Used only on the I/O thread.
 193   State state_;
 194
 195   // Requests that need to be sent once the channel to the broker process is
 196   // established. Used only on the I/O thread.
 197   std::vector<PendingRequest> pending_requests_;
 198   // Requests that have been sent but haven't got replied. Used only on the
 199   // I/O thread.
 200   std::map<uint32, RequestType> pending_responses_;
 201
 202   // Used only on the I/O thread.
 203   scoped_refptr<content::PepperFlashSettingsHelper> helper_;
 204
 205   // Path for the current profile. Must be retrieved on the UI thread from the
 206   // browser context when we start so we can use it later on the I/O thread.
 207   base::FilePath browser_context_path_;
 208
 209   scoped_refptr<PluginPrefs> plugin_prefs_;
 210 };
 211
 212 PepperFlashSettingsManager::Core::Core(
 213     base::WeakPtr<PepperFlashSettingsManager> manager,
 214     content::BrowserContext* browser_context)
 215     : manager_(manager),
 216       state_(STATE_UNINITIALIZED),
 217       browser_context_path_(browser_context->GetPath()),
 218       plugin_prefs_(PluginPrefs::GetForProfile(
 219           Profile::FromBrowserContext(browser_context))) {
 220   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 221 }
 222
 223 PepperFlashSettingsManager::Core::~Core() {
 224   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 225 }
 226
 227 void PepperFlashSettingsManager::Core::Initialize() {
 228   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 229   BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
 230                           base::Bind(&Core::InitializeOnIOThread, this));
 231 }
 232
 233 void PepperFlashSettingsManager::Core::Detach() {
 234   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 235
 236   // This call guarantees that one ref is retained until we get to the DETACHED
 237   // state. This is important. Otherwise, if the ref count drops to zero on the
 238   // UI thread (which posts a task to delete this object on the I/O thread)
 239   // while the I/O thread doesn't know about it, methods on the I/O thread might
 240   // increase the ref count again and cause double deletion.
 241   BrowserThread::PostTask(
 242       BrowserThread::IO, FROM_HERE, base::Bind(&Core::DetachOnIOThread, this));
 243 }
 244
 245 void PepperFlashSettingsManager::Core::DeauthorizeContentLicenses(
 246     uint32 request_id) {
 247   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 248
 249   BrowserThread::PostTask(
 250       BrowserThread::IO, FROM_HERE,
 251       base::Bind(&Core::DeauthorizeContentLicensesOnIOThread, this,
 252                  request_id));
 253 }
 254
 255 void PepperFlashSettingsManager::Core::GetPermissionSettings(
 256     uint32 request_id,
 257     PP_Flash_BrowserOperations_SettingType setting_type) {
 258   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 259
 260   BrowserThread::PostTask(
 261       BrowserThread::IO, FROM_HERE,
 262       base::Bind(&Core::GetPermissionSettingsOnIOThread, this, request_id,
 263                  setting_type));
 264 }
 265
 266 void PepperFlashSettingsManager::Core::SetDefaultPermission(
 267     uint32 request_id,
 268     PP_Flash_BrowserOperations_SettingType setting_type,
 269     PP_Flash_BrowserOperations_Permission permission,
 270     bool clear_site_specific) {
 271   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 272
 273   BrowserThread::PostTask(
 274       BrowserThread::IO, FROM_HERE,
 275       base::Bind(&Core::SetDefaultPermissionOnIOThread, this, request_id,
 276                  setting_type, permission, clear_site_specific));
 277 }
 278
 279 void PepperFlashSettingsManager::Core::SetSitePermission(
 280     uint32 request_id,
 281     PP_Flash_BrowserOperations_SettingType setting_type,
 282     const ppapi::FlashSiteSettings& sites) {
 283   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 284
 285   BrowserThread::PostTask(
 286       BrowserThread::IO, FROM_HERE,
 287       base::Bind(&Core::SetSitePermissionOnIOThread, this, request_id,
 288                  setting_type, sites));
 289 }
 290
 291 void PepperFlashSettingsManager::Core::GetSitesWithData(uint32 request_id) {
 292   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 293
 294   BrowserThread::PostTask(
 295       BrowserThread::IO, FROM_HERE,
 296       base::Bind(&Core::GetSitesWithDataOnIOThread, this, request_id));
 297 }
 298
 299 void PepperFlashSettingsManager::Core::ClearSiteData(uint32 request_id,
 300                                                      const std::string& site,
 301                                                      uint64 flags,
 302                                                      uint64 max_age) {
 303   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 304
 305   BrowserThread::PostTask(
 306       BrowserThread::IO, FROM_HERE,
 307       base::Bind(&Core::ClearSiteDataOnIOThread, this, request_id,
 308                  site, flags, max_age));
 309 }
 310
 311 bool PepperFlashSettingsManager::Core::OnMessageReceived(
 312     const IPC::Message& message) {
 313   IPC_BEGIN_MESSAGE_MAP(Core, message)
 314     IPC_MESSAGE_HANDLER(PpapiHostMsg_DeauthorizeContentLicensesResult,
 315                         OnDeauthorizeContentLicensesResult)
 316     IPC_MESSAGE_HANDLER(PpapiHostMsg_GetPermissionSettingsResult,
 317                         OnGetPermissionSettingsResult)
 318     IPC_MESSAGE_HANDLER(PpapiHostMsg_SetDefaultPermissionResult,
 319                         OnSetDefaultPermissionResult)
 320     IPC_MESSAGE_HANDLER(PpapiHostMsg_SetSitePermissionResult,
 321                         OnSetSitePermissionResult)
 322     IPC_MESSAGE_HANDLER(PpapiHostMsg_GetSitesWithDataResult,
 323                         OnGetSitesWithDataResult)
 324     IPC_MESSAGE_HANDLER(PpapiHostMsg_ClearSiteDataResult,
 325                         OnClearSiteDataResult)
 326     IPC_MESSAGE_UNHANDLED_ERROR()
 327   IPC_END_MESSAGE_MAP()
 328
 329   return true;
 330 }
 331
 332 void PepperFlashSettingsManager::Core::OnChannelError() {
 333   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 334   if (state_ == STATE_DETACHED)
 335     return;
 336
 337   NotifyErrorFromIOThread();
 338 }
 339
 340 void PepperFlashSettingsManager::Core::ConnectToChannel(
 341     bool success,
 342     const IPC::ChannelHandle& handle) {
 343   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 344   if (state_ == STATE_DETACHED)
 345     return;
 346
 347   DCHECK(state_ == STATE_UNINITIALIZED);
 348   DCHECK(!channel_.get());
 349
 350   if (!success) {
 351     DLOG(ERROR) << "Couldn't open plugin channel";
 352     NotifyErrorFromIOThread();
 353     return;
 354   }
 355
 356   channel_.reset(new IPC::Channel(handle, IPC::Channel::MODE_CLIENT, this));
 357   if (!channel_->Connect()) {
 358     DLOG(ERROR) << "Couldn't connect to plugin";
 359     NotifyErrorFromIOThread();
 360     return;
 361   }
 362
 363   state_ = STATE_INITIALIZED;
 364
 365   std::vector<PendingRequest> temp_pending_requests;
 366   temp_pending_requests.swap(pending_requests_);
 367   for (std::vector<PendingRequest>::iterator iter =
 368            temp_pending_requests.begin();
 369        iter != temp_pending_requests.end(); ++iter) {
 370     switch (iter->type) {
 371       case INVALID_REQUEST_TYPE:
 372         NOTREACHED();
 373         break;
 374       case DEAUTHORIZE_CONTENT_LICENSES:
 375         DeauthorizeContentLicensesOnIOThread(iter->id);
 376         break;
 377       case GET_PERMISSION_SETTINGS:
 378         GetPermissionSettingsOnIOThread(iter->id, iter->setting_type);
 379         break;
 380       case SET_DEFAULT_PERMISSION:
 381         SetDefaultPermissionOnIOThread(
 382             iter->id, iter->setting_type, iter->permission,
 383             iter->clear_site_specific);
 384         break;
 385       case SET_SITE_PERMISSION:
 386         SetSitePermissionOnIOThread(iter->id, iter->setting_type, iter->sites);
 387         break;
 388       case GET_SITES_WITH_DATA:
 389         GetSitesWithDataOnIOThread(iter->id);
 390         break;
 391       case CLEAR_SITE_DATA:
 392         ClearSiteDataOnIOThread(iter->id, iter->site, iter->flags,
 393                                 iter->max_age);
 394         break;
 395     }
 396   }
 397 }
 398
 399 void PepperFlashSettingsManager::Core::InitializeOnIOThread() {
 400   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 401   DCHECK_EQ(STATE_UNINITIALIZED, state_);
 402
 403   content::WebPluginInfo plugin_info;
 404   if (!PepperFlashSettingsManager::IsPepperFlashInUse(plugin_prefs_.get(),
 405                                                       &plugin_info)) {
 406     NotifyErrorFromIOThread();
 407     return;
 408   }
 409
 410   base::FilePath profile_path =
 411       browser_context_path_.Append(content::kPepperDataDirname);
 412 #if defined(OS_WIN)
 413   plugin_data_path_ = profile_path.Append(plugin_info.name);
 414 #else
 415   plugin_data_path_ = profile_path.Append(UTF16ToUTF8(plugin_info.name));
 416 #endif
 417
 418   helper_ = content::PepperFlashSettingsHelper::Create();
 419   content::PepperFlashSettingsHelper::OpenChannelCallback callback =
 420       base::Bind(&Core::ConnectToChannel, this);
 421   helper_->OpenChannelToBroker(plugin_info.path, callback);
 422 }
 423
 424 void PepperFlashSettingsManager::Core::DeauthorizeContentLicensesOnIOThread(
 425     uint32 request_id) {
 426   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 427   DCHECK_NE(STATE_DETACHED, state_);
 428
 429   if (state_ == STATE_UNINITIALIZED) {
 430     PendingRequest request;
 431     request.id = request_id;
 432     request.type = DEAUTHORIZE_CONTENT_LICENSES;
 433     pending_requests_.push_back(request);
 434     return;
 435   }
 436
 437   pending_responses_.insert(
 438       std::make_pair(request_id, DEAUTHORIZE_CONTENT_LICENSES));
 439   if (state_ == STATE_ERROR) {
 440     NotifyErrorFromIOThread();
 441     return;
 442   }
 443
 444 #if defined(OS_CHROMEOS)
 445   BrowserThread::PostBlockingPoolTask(FROM_HERE,
 446       base::Bind(&Core::DeauthorizeContentLicensesOnBlockingPool, this,
 447                  request_id, browser_context_path_));
 448 #else
 449   DeauthorizeContentLicensesInPlugin(request_id, true);
 450 #endif
 451 }
 452
 453 // TODO(raymes): This is temporary code to migrate ChromeOS devices to the new
 454 // scheme for generating device IDs. Delete this once we are sure most ChromeOS
 455 // devices have been migrated.
 456 void PepperFlashSettingsManager::Core::DeauthorizeContentLicensesOnBlockingPool(
 457     uint32 request_id,
 458     const base::FilePath& profile_path) {
 459   // ChromeOS used to store the device ID in a file but this is no longer used.
 460   // Wipe that file.
 461   const base::FilePath& device_id_path =
 462       chrome::DeviceIDFetcher::GetLegacyDeviceIDPath(profile_path);
 463   bool success = base::DeleteFile(device_id_path, false);
 464
 465   BrowserThread::PostTask(
 466       BrowserThread::IO, FROM_HERE,
 467       base::Bind(&Core::DeauthorizeContentLicensesInPlugin, this, request_id,
 468                  success));
 469 }
 470
 471 void PepperFlashSettingsManager::Core::DeauthorizeContentLicensesInPlugin(
 472     uint32 request_id,
 473     bool success) {
 474   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 475   if (!success) {
 476     NotifyErrorFromIOThread();
 477     return;
 478   }
 479   IPC::Message* msg =
 480       new PpapiMsg_DeauthorizeContentLicenses(request_id, plugin_data_path_);
 481   if (!channel_->Send(msg)) {
 482     DLOG(ERROR) << "Couldn't send DeauthorizeContentLicenses message";
 483     // A failure notification for the current request will be sent since
 484     // |pending_responses_| has been updated.
 485     NotifyErrorFromIOThread();
 486   }
 487 }
 488
 489 void PepperFlashSettingsManager::Core::GetPermissionSettingsOnIOThread(
 490     uint32 request_id,
 491     PP_Flash_BrowserOperations_SettingType setting_type) {
 492   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 493   DCHECK_NE(STATE_DETACHED, state_);
 494
 495   if (state_ == STATE_UNINITIALIZED) {
 496     PendingRequest request;
 497     request.id = request_id;
 498     request.type = GET_PERMISSION_SETTINGS;
 499     request.setting_type = setting_type;
 500     pending_requests_.push_back(request);
 501     return;
 502   }
 503
 504   pending_responses_.insert(
 505       std::make_pair(request_id, GET_PERMISSION_SETTINGS));
 506   if (state_ == STATE_ERROR) {
 507     NotifyErrorFromIOThread();
 508     return;
 509   }
 510
 511   IPC::Message* msg = new PpapiMsg_GetPermissionSettings(
 512       request_id, plugin_data_path_, setting_type);
 513   if (!channel_->Send(msg)) {
 514     DLOG(ERROR) << "Couldn't send GetPermissionSettings message";
 515     // A failure notification for the current request will be sent since
 516     // |pending_responses_| has been updated.
 517     NotifyErrorFromIOThread();
 518   }
 519 }
 520
 521 void PepperFlashSettingsManager::Core::SetDefaultPermissionOnIOThread(
 522     uint32 request_id,
 523     PP_Flash_BrowserOperations_SettingType setting_type,
 524     PP_Flash_BrowserOperations_Permission permission,
 525     bool clear_site_specific) {
 526   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 527   DCHECK_NE(STATE_DETACHED, state_);
 528
 529   if (state_ == STATE_UNINITIALIZED) {
 530     PendingRequest request;
 531     request.id = request_id;
 532     request.type = SET_DEFAULT_PERMISSION;
 533     request.setting_type = setting_type;
 534     request.permission = permission;
 535     request.clear_site_specific = clear_site_specific;
 536     pending_requests_.push_back(request);
 537     return;
 538   }
 539
 540   pending_responses_.insert(std::make_pair(request_id, SET_DEFAULT_PERMISSION));
 541   if (state_ == STATE_ERROR) {
 542     NotifyErrorFromIOThread();
 543     return;
 544   }
 545
 546   IPC::Message* msg = new PpapiMsg_SetDefaultPermission(
 547       request_id, plugin_data_path_, setting_type, permission,
 548       clear_site_specific);
 549   if (!channel_->Send(msg)) {
 550     DLOG(ERROR) << "Couldn't send SetDefaultPermission message";
 551     // A failure notification for the current request will be sent since
 552     // |pending_responses_| has been updated.
 553     NotifyErrorFromIOThread();
 554   }
 555 }
 556
 557 void PepperFlashSettingsManager::Core::SetSitePermissionOnIOThread(
 558     uint32 request_id,
 559     PP_Flash_BrowserOperations_SettingType setting_type,
 560     const ppapi::FlashSiteSettings& sites) {
 561   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 562   DCHECK_NE(STATE_DETACHED, state_);
 563
 564   if (state_ == STATE_UNINITIALIZED) {
 565     pending_requests_.push_back(PendingRequest());
 566     PendingRequest& request = pending_requests_.back();
 567     request.id = request_id;
 568     request.type = SET_SITE_PERMISSION;
 569     request.setting_type = setting_type;
 570     request.sites = sites;
 571     return;
 572   }
 573
 574   pending_responses_.insert(std::make_pair(request_id, SET_SITE_PERMISSION));
 575   if (state_ == STATE_ERROR) {
 576     NotifyErrorFromIOThread();
 577     return;
 578   }
 579
 580   IPC::Message* msg = new PpapiMsg_SetSitePermission(
 581       request_id, plugin_data_path_, setting_type, sites);
 582   if (!channel_->Send(msg)) {
 583     DLOG(ERROR) << "Couldn't send SetSitePermission message";
 584     // A failure notification for the current request will be sent since
 585     // |pending_responses_| has been updated.
 586     NotifyErrorFromIOThread();
 587   }
 588 }
 589
 590 void PepperFlashSettingsManager::Core::GetSitesWithDataOnIOThread(
 591     uint32 request_id) {
 592   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 593   DCHECK_NE(STATE_DETACHED, state_);
 594
 595   if (state_ == STATE_UNINITIALIZED) {
 596     pending_requests_.push_back(PendingRequest());
 597     PendingRequest& request = pending_requests_.back();
 598     request.id = request_id;
 599     request.type = GET_SITES_WITH_DATA;
 600     return;
 601   }
 602
 603   pending_responses_.insert(std::make_pair(request_id, GET_SITES_WITH_DATA));
 604   if (state_ == STATE_ERROR) {
 605     NotifyErrorFromIOThread();
 606     return;
 607   }
 608
 609   IPC::Message* msg = new PpapiMsg_GetSitesWithData(
 610       request_id, plugin_data_path_);
 611   if (!channel_->Send(msg)) {
 612     DLOG(ERROR) << "Couldn't send GetSitesWithData message";
 613     // A failure notification for the current request will be sent since
 614     // |pending_responses_| has been updated.
 615     NotifyErrorFromIOThread();
 616   }
 617 }
 618
 619 void PepperFlashSettingsManager::Core::ClearSiteDataOnIOThread(
 620     uint32 request_id,
 621     const std::string& site,
 622     uint64 flags,
 623     uint64 max_age) {
 624   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 625   DCHECK_NE(STATE_DETACHED, state_);
 626
 627   if (state_ == STATE_UNINITIALIZED) {
 628     pending_requests_.push_back(PendingRequest());
 629     PendingRequest& request = pending_requests_.back();
 630     request.id = request_id;
 631     request.type = CLEAR_SITE_DATA;
 632     request.site = site;
 633     request.flags = flags;
 634     request.max_age = max_age;
 635     return;
 636   }
 637
 638   pending_responses_.insert(std::make_pair(request_id, CLEAR_SITE_DATA));
 639   if (state_ == STATE_ERROR) {
 640     NotifyErrorFromIOThread();
 641     return;
 642   }
 643
 644   IPC::Message* msg = new PpapiMsg_ClearSiteData(
 645       request_id, plugin_data_path_, site, flags, max_age);
 646   if (!channel_->Send(msg)) {
 647     DLOG(ERROR) << "Couldn't send ClearSiteData message";
 648     // A failure notification for the current request will be sent since
 649     // |pending_responses_| has been updated.
 650     NotifyErrorFromIOThread();
 651   }
 652 }
 653
 654 void PepperFlashSettingsManager::Core::DetachOnIOThread() {
 655   state_ = STATE_DETACHED;
 656 }
 657
 658 void PepperFlashSettingsManager::Core::NotifyErrorFromIOThread() {
 659   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 660   if (state_ == STATE_DETACHED)
 661     return;
 662
 663   state_ = STATE_ERROR;
 664   std::vector<std::pair<uint32, RequestType> > notifications;
 665   for (std::vector<PendingRequest>::iterator iter = pending_requests_.begin();
 666        iter != pending_requests_.end(); ++iter) {
 667     notifications.push_back(std::make_pair(iter->id, iter->type));
 668   }
 669   pending_requests_.clear();
 670   notifications.insert(notifications.end(), pending_responses_.begin(),
 671                        pending_responses_.end());
 672   pending_responses_.clear();
 673
 674   BrowserThread::PostTask(
 675       BrowserThread::UI, FROM_HERE,
 676       base::Bind(&Core::NotifyError, this, notifications));
 677 }
 678
 679 void
 680 PepperFlashSettingsManager::Core::NotifyDeauthorizeContentLicensesCompleted(
 681     uint32 request_id,
 682     bool success) {
 683   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 684
 685   if (manager_.get()) {
 686     manager_->client_->OnDeauthorizeContentLicensesCompleted(
 687         request_id, success);
 688   }
 689 }
 690
 691 void PepperFlashSettingsManager::Core::NotifyGetPermissionSettingsCompleted(
 692     uint32 request_id,
 693     bool success,
 694     PP_Flash_BrowserOperations_Permission default_permission,
 695     const ppapi::FlashSiteSettings& sites) {
 696   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 697
 698   if (manager_.get()) {
 699     manager_->client_->OnGetPermissionSettingsCompleted(
 700         request_id, success, default_permission, sites);
 701   }
 702 }
 703
 704 void PepperFlashSettingsManager::Core::NotifySetDefaultPermissionCompleted(
 705     uint32 request_id,
 706     bool success) {
 707   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 708
 709   if (manager_.get()) {
 710     manager_->client_->OnSetDefaultPermissionCompleted(
 711         request_id, success);
 712   }
 713 }
 714
 715 void PepperFlashSettingsManager::Core::NotifySetSitePermissionCompleted(
 716     uint32 request_id,
 717     bool success) {
 718   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 719
 720   if (manager_.get()) {
 721     manager_->client_->OnSetSitePermissionCompleted(
 722         request_id, success);
 723   }
 724 }
 725
 726 void PepperFlashSettingsManager::Core::NotifyGetSitesWithDataCompleted(
 727     uint32 request_id,
 728     const std::vector<std::string>& sites) {
 729   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 730
 731   if (manager_.get()) {
 732     manager_->client_->OnGetSitesWithDataCompleted(
 733         request_id, sites);
 734   }
 735 }
 736
 737 void PepperFlashSettingsManager::Core::NotifyClearSiteDataCompleted(
 738     uint32 request_id,
 739     bool success) {
 740   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 741
 742   if (manager_.get())
 743     manager_->client_->OnClearSiteDataCompleted(request_id, success);
 744 }
 745
 746 void PepperFlashSettingsManager::Core::NotifyError(
 747     const std::vector<std::pair<uint32, RequestType> >& notifications) {
 748   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 749
 750   scoped_refptr<Core> protector(this);
 751   for (std::vector<std::pair<uint32, RequestType> >::const_iterator iter =
 752       notifications.begin(); iter != notifications.end(); ++iter) {
 753     // Check |manager_| for each iteration in case it is destroyed in one of
 754     // the callbacks.
 755     if (!manager_.get())
 756       return;
 757
 758     switch (iter->second) {
 759       case INVALID_REQUEST_TYPE:
 760         NOTREACHED();
 761         break;
 762       case DEAUTHORIZE_CONTENT_LICENSES:
 763         manager_->client_->OnDeauthorizeContentLicensesCompleted(
 764             iter->first, false);
 765         break;
 766       case GET_PERMISSION_SETTINGS:
 767         manager_->client_->OnGetPermissionSettingsCompleted(
 768             iter->first, false, PP_FLASH_BROWSEROPERATIONS_PERMISSION_DEFAULT,
 769             ppapi::FlashSiteSettings());
 770         break;
 771       case SET_DEFAULT_PERMISSION:
 772         manager_->client_->OnSetDefaultPermissionCompleted(
 773             iter->first, false);
 774         break;
 775       case SET_SITE_PERMISSION:
 776         manager_->client_->OnSetSitePermissionCompleted(iter->first, false);
 777         break;
 778       case GET_SITES_WITH_DATA:
 779         manager_->client_->OnGetSitesWithDataCompleted(
 780             iter->first, std::vector<std::string>());
 781         break;
 782       case CLEAR_SITE_DATA:
 783         manager_->client_->OnClearSiteDataCompleted(iter->first, false);
 784         break;
 785     }
 786   }
 787
 788   if (manager_.get())
 789     manager_->OnError(this);
 790 }
 791
 792 void PepperFlashSettingsManager::Core::OnDeauthorizeContentLicensesResult(
 793     uint32 request_id,
 794     bool success) {
 795   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 796   if (state_ == STATE_DETACHED)
 797     return;
 798
 799   DLOG_IF(ERROR, !success) << "DeauthorizeContentLicenses returned error";
 800
 801   std::map<uint32, RequestType>::iterator iter =
 802       pending_responses_.find(request_id);
 803   if (iter == pending_responses_.end())
 804     return;
 805
 806   DCHECK_EQ(iter->second, DEAUTHORIZE_CONTENT_LICENSES);
 807
 808   pending_responses_.erase(iter);
 809   BrowserThread::PostTask(
 810       BrowserThread::UI, FROM_HERE,
 811       base::Bind(&Core::NotifyDeauthorizeContentLicensesCompleted, this,
 812                  request_id, success));
 813 }
 814
 815 void PepperFlashSettingsManager::Core::OnGetPermissionSettingsResult(
 816     uint32 request_id,
 817     bool success,
 818     PP_Flash_BrowserOperations_Permission default_permission,
 819     const ppapi::FlashSiteSettings& sites) {
 820   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 821   if (state_ == STATE_DETACHED)
 822     return;
 823
 824   DLOG_IF(ERROR, !success) << "GetPermissionSettings returned error";
 825
 826   std::map<uint32, RequestType>::iterator iter =
 827       pending_responses_.find(request_id);
 828   if (iter == pending_responses_.end())
 829     return;
 830
 831   DCHECK_EQ(iter->second, GET_PERMISSION_SETTINGS);
 832
 833   pending_responses_.erase(iter);
 834   BrowserThread::PostTask(
 835       BrowserThread::UI, FROM_HERE,
 836       base::Bind(&Core::NotifyGetPermissionSettingsCompleted, this,
 837                  request_id, success, default_permission, sites));
 838 }
 839
 840 void PepperFlashSettingsManager::Core::OnSetDefaultPermissionResult(
 841     uint32 request_id,
 842     bool success) {
 843   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 844   if (state_ == STATE_DETACHED)
 845     return;
 846
 847   DLOG_IF(ERROR, !success) << "SetDefaultPermission returned error";
 848
 849   std::map<uint32, RequestType>::iterator iter =
 850       pending_responses_.find(request_id);
 851   if (iter == pending_responses_.end())
 852     return;
 853
 854   DCHECK_EQ(iter->second, SET_DEFAULT_PERMISSION);
 855
 856   pending_responses_.erase(iter);
 857   BrowserThread::PostTask(
 858       BrowserThread::UI, FROM_HERE,
 859       base::Bind(&Core::NotifySetDefaultPermissionCompleted, this,
 860                  request_id, success));
 861 }
 862
 863 void PepperFlashSettingsManager::Core::OnSetSitePermissionResult(
 864     uint32 request_id,
 865     bool success) {
 866   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 867   if (state_ == STATE_DETACHED)
 868     return;
 869
 870   DLOG_IF(ERROR, !success) << "SetSitePermission returned error";
 871
 872   std::map<uint32, RequestType>::iterator iter =
 873       pending_responses_.find(request_id);
 874   if (iter == pending_responses_.end())
 875     return;
 876
 877   DCHECK_EQ(iter->second, SET_SITE_PERMISSION);
 878
 879   pending_responses_.erase(iter);
 880   BrowserThread::PostTask(
 881       BrowserThread::UI, FROM_HERE,
 882       base::Bind(&Core::NotifySetSitePermissionCompleted, this, request_id,
 883       success));
 884 }
 885
 886 void PepperFlashSettingsManager::Core::OnGetSitesWithDataResult(
 887     uint32 request_id,
 888     const std::vector<std::string>& sites) {
 889   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 890   if (state_ == STATE_DETACHED)
 891     return;
 892
 893   std::map<uint32, RequestType>::iterator iter =
 894       pending_responses_.find(request_id);
 895   if (iter == pending_responses_.end())
 896     return;
 897
 898   DCHECK_EQ(iter->second, GET_SITES_WITH_DATA);
 899
 900   pending_responses_.erase(iter);
 901   BrowserThread::PostTask(
 902       BrowserThread::UI, FROM_HERE,
 903       base::Bind(&Core::NotifyGetSitesWithDataCompleted, this, request_id,
 904       sites));
 905 }
 906
 907 void PepperFlashSettingsManager::Core::OnClearSiteDataResult(
 908     uint32 request_id,
 909     bool success) {
 910   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 911   if (state_ == STATE_DETACHED)
 912     return;
 913
 914   DLOG_IF(ERROR, !success) << "ClearSiteData returned error";
 915
 916   std::map<uint32, RequestType>::iterator iter =
 917       pending_responses_.find(request_id);
 918   if (iter == pending_responses_.end())
 919     return;
 920
 921   DCHECK_EQ(iter->second, CLEAR_SITE_DATA);
 922
 923   pending_responses_.erase(iter);
 924   BrowserThread::PostTask(
 925       BrowserThread::UI, FROM_HERE,
 926       base::Bind(&Core::NotifyClearSiteDataCompleted, this, request_id,
 927       success));
 928 }
 929
 930 PepperFlashSettingsManager::PepperFlashSettingsManager(
 931     Client* client,
 932     content::BrowserContext* browser_context)
 933     : client_(client),
 934       browser_context_(browser_context),
 935       next_request_id_(1),
 936       weak_ptr_factory_(this) {
 937   DCHECK(client);
 938   DCHECK(browser_context);
 939 }
 940
 941 PepperFlashSettingsManager::~PepperFlashSettingsManager() {
 942   if (core_.get())
 943     core_->Detach();
 944 }
 945
 946 // static
 947 bool PepperFlashSettingsManager::IsPepperFlashInUse(
 948     PluginPrefs* plugin_prefs,
 949     content::WebPluginInfo* plugin_info) {
 950   if (!plugin_prefs)
 951     return false;
 952
 953   content::PluginService* plugin_service =
 954       content::PluginService::GetInstance();
 955   std::vector<content::WebPluginInfo> plugins;
 956   plugin_service->GetPluginInfoArray(
 957       GURL(), content::kFlashPluginSwfMimeType, false, &plugins, NULL);
 958
 959   for (std::vector<content::WebPluginInfo>::iterator iter = plugins.begin();
 960        iter != plugins.end(); ++iter) {
 961     if (iter->is_pepper_plugin() && plugin_prefs->IsPluginEnabled(*iter)) {
 962       if (plugin_info)
 963         *plugin_info = *iter;
 964       return true;
 965     }
 966   }
 967   return false;
 968 }
 969
 970 // static
 971 void PepperFlashSettingsManager::RegisterProfilePrefs(
 972     user_prefs::PrefRegistrySyncable* registry) {
 973   registry->RegisterBooleanPref(
 974       prefs::kDeauthorizeContentLicenses,
 975       false,
 976       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 977
 978   registry->RegisterBooleanPref(
 979       prefs::kPepperFlashSettingsEnabled,
 980       true,
 981       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 982 }
 983
 984 uint32 PepperFlashSettingsManager::DeauthorizeContentLicenses(
 985     PrefService* prefs) {
 986   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 987
 988   // Clear the device ID salt which has the effect of regenerating a device
 989   // ID. Since this happens synchronously (and on the UI thread), we don't have
 990   // to add it to a pending request.
 991   prefs->ClearPref(prefs::kDRMSalt);
 992
 993   EnsureCoreExists();
 994   uint32 id = GetNextRequestId();
 995   core_->DeauthorizeContentLicenses(id);
 996   return id;
 997 }
 998
 999 uint32 PepperFlashSettingsManager::GetPermissionSettings(
1000     PP_Flash_BrowserOperations_SettingType setting_type) {
1001   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
1002
1003   EnsureCoreExists();
1004   uint32 id = GetNextRequestId();
1005   core_->GetPermissionSettings(id, setting_type);
1006   return id;
1007 }
1008
1009 uint32 PepperFlashSettingsManager::SetDefaultPermission(
1010     PP_Flash_BrowserOperations_SettingType setting_type,
1011     PP_Flash_BrowserOperations_Permission permission,
1012     bool clear_site_specific) {
1013   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
1014
1015   EnsureCoreExists();
1016   uint32 id = GetNextRequestId();
1017   core_->SetDefaultPermission(id, setting_type, permission,
1018                               clear_site_specific);
1019   return id;
1020 }
1021
1022 uint32 PepperFlashSettingsManager::SetSitePermission(
1023     PP_Flash_BrowserOperations_SettingType setting_type,
1024     const ppapi::FlashSiteSettings& sites) {
1025   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
1026
1027   EnsureCoreExists();
1028   uint32 id = GetNextRequestId();
1029   core_->SetSitePermission(id, setting_type, sites);
1030   return id;
1031 }
1032
1033 uint32 PepperFlashSettingsManager::GetSitesWithData() {
1034   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
1035
1036   EnsureCoreExists();
1037   uint32 id = GetNextRequestId();
1038   core_->GetSitesWithData(id);
1039   return id;
1040 }
1041
1042 uint32 PepperFlashSettingsManager::ClearSiteData(const std::string& site,
1043                                                  uint64 flags,
1044                                                  uint64 max_age) {
1045   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
1046
1047   EnsureCoreExists();
1048   uint32 id = GetNextRequestId();
1049   core_->ClearSiteData(id, site, flags, max_age);
1050   return id;
1051 }
1052
1053 uint32 PepperFlashSettingsManager::GetNextRequestId() {
1054   return next_request_id_++;
1055 }
1056
1057 void PepperFlashSettingsManager::EnsureCoreExists() {
1058   if (!core_.get()) {
1059     core_ = new Core(weak_ptr_factory_.GetWeakPtr(), browser_context_);
1060     core_->Initialize();
1061   }
1062 }
1063
1064 void PepperFlashSettingsManager::OnError(Core* core) {
1065   DCHECK(core);
1066   if (core != core_.get())
1067     return;
1068
1069   core_->Detach();
1070   core_ = NULL;
1071 }