chrome/browser/permissions/permission_queue_controller.cc

   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/browser/permissions/permission_queue_controller.h"
   6
   7 #include "base/prefs/pref_service.h"
   8 #include "chrome/browser/chrome_notification_types.h"
   9 #include "chrome/browser/geolocation/geolocation_infobar_delegate.h"
  10 #include "chrome/browser/infobars/infobar_service.h"
  11 #include "chrome/browser/media/midi_permission_infobar_delegate.h"
  12 #include "chrome/browser/notifications/notification_permission_infobar_delegate.h"
  13 #include "chrome/browser/permissions/permission_context_uma_util.h"
  14 #include "chrome/browser/profiles/profile.h"
  15 #include "chrome/browser/storage/durable_storage_permission_infobar_delegate.h"
  16 #include "chrome/browser/tab_contents/tab_util.h"
  17 #include "chrome/common/pref_names.h"
  18 #include "components/content_settings/core/browser/host_content_settings_map.h"
  19 #include "components/content_settings/core/common/content_settings.h"
  20 #include "components/infobars/core/infobar.h"
  21 #include "content/public/browser/browser_thread.h"
  22 #include "content/public/browser/notification_details.h"
  23 #include "content/public/browser/notification_source.h"
  24 #include "content/public/browser/notification_types.h"
  25 #include "content/public/browser/web_contents.h"
  26 #include "content/public/common/url_constants.h"
  27
  28 #if defined(OS_ANDROID) || defined(OS_CHROMEOS)
  29 #include "chrome/browser/media/protected_media_identifier_infobar_delegate.h"
  30 #endif
  31
  32 namespace {
  33
  34 InfoBarService* GetInfoBarService(const PermissionRequestID& id) {
  35   content::WebContents* web_contents = tab_util::GetWebContentsByFrameID(
  36       id.render_process_id(), id.render_frame_id());
  37   return web_contents ? InfoBarService::FromWebContents(web_contents) : NULL;
  38 }
  39
  40 bool ArePermissionRequestsForSameTab(
  41     const PermissionRequestID& request,
  42     const PermissionRequestID& other_request) {
  43   content::WebContents* web_contents = tab_util::GetWebContentsByFrameID(
  44       request.render_process_id(), request.render_frame_id());
  45   content::WebContents* other_web_contents = tab_util::GetWebContentsByFrameID(
  46       other_request.render_process_id(), other_request.render_frame_id());
  47
  48   return web_contents == other_web_contents;
  49 }
  50
  51 }  // anonymous namespace
  52
  53 class PermissionQueueController::PendingInfobarRequest {
  54  public:
  55   PendingInfobarRequest(ContentSettingsType type,
  56                         const PermissionRequestID& id,
  57                         const GURL& requesting_frame,
  58                         const GURL& embedder,
  59                         const PermissionDecidedCallback& callback);
  60   ~PendingInfobarRequest();
  61
  62   bool IsForPair(const GURL& requesting_frame,
  63                  const GURL& embedder) const;
  64
  65   const PermissionRequestID& id() const { return id_; }
  66   const GURL& requesting_frame() const { return requesting_frame_; }
  67   bool has_infobar() const { return !!infobar_; }
  68   infobars::InfoBar* infobar() { return infobar_; }
  69
  70   void RunCallback(ContentSetting content_setting);
  71   void CreateInfoBar(PermissionQueueController* controller,
  72                      const std::string& display_languages);
  73
  74  private:
  75   ContentSettingsType type_;
  76   PermissionRequestID id_;
  77   GURL requesting_frame_;
  78   GURL embedder_;
  79   PermissionDecidedCallback callback_;
  80   infobars::InfoBar* infobar_;
  81
  82   // Purposefully do not disable copying, as this is stored in STL containers.
  83 };
  84
  85 PermissionQueueController::PendingInfobarRequest::PendingInfobarRequest(
  86     ContentSettingsType type,
  87     const PermissionRequestID& id,
  88     const GURL& requesting_frame,
  89     const GURL& embedder,
  90     const PermissionDecidedCallback& callback)
  91     : type_(type),
  92       id_(id),
  93       requesting_frame_(requesting_frame),
  94       embedder_(embedder),
  95       callback_(callback),
  96       infobar_(NULL) {
  97 }
  98
  99 PermissionQueueController::PendingInfobarRequest::~PendingInfobarRequest() {
 100 }
 101
 102 bool PermissionQueueController::PendingInfobarRequest::IsForPair(
 103     const GURL& requesting_frame,
 104     const GURL& embedder) const {
 105   return (requesting_frame_ == requesting_frame) && (embedder_ == embedder);
 106 }
 107
 108 void PermissionQueueController::PendingInfobarRequest::RunCallback(
 109     ContentSetting content_setting) {
 110   callback_.Run(content_setting);
 111 }
 112
 113 void PermissionQueueController::PendingInfobarRequest::CreateInfoBar(
 114     PermissionQueueController* controller,
 115     const std::string& display_languages) {
 116   switch (type_) {
 117     case CONTENT_SETTINGS_TYPE_GEOLOCATION:
 118       infobar_ = GeolocationInfoBarDelegate::Create(
 119           GetInfoBarService(id_), controller, id_, requesting_frame_,
 120           display_languages);
 121       break;
 122 #if defined(ENABLE_NOTIFICATIONS)
 123     case CONTENT_SETTINGS_TYPE_NOTIFICATIONS:
 124       infobar_ = NotificationPermissionInfobarDelegate::Create(
 125           GetInfoBarService(id_), controller, id_, requesting_frame_,
 126           display_languages);
 127       break;
 128 #endif  // ENABLE_NOTIFICATIONS
 129     case CONTENT_SETTINGS_TYPE_MIDI_SYSEX:
 130       infobar_ = MidiPermissionInfoBarDelegate::Create(
 131           GetInfoBarService(id_), controller, id_, requesting_frame_,
 132           display_languages, type_);
 133       break;
 134 #if defined(OS_ANDROID) || defined(OS_CHROMEOS)
 135     case CONTENT_SETTINGS_TYPE_PROTECTED_MEDIA_IDENTIFIER:
 136       infobar_ = ProtectedMediaIdentifierInfoBarDelegate::Create(
 137           GetInfoBarService(id_), controller, id_, requesting_frame_,
 138           display_languages);
 139       break;
 140 #endif
 141     case CONTENT_SETTINGS_TYPE_DURABLE_STORAGE:
 142       infobar_ = DurableStoragePermissionInfoBarDelegate::Create(
 143           GetInfoBarService(id_), controller, id_, requesting_frame_,
 144           display_languages, type_);
 145       break;
 146     default:
 147       NOTREACHED();
 148       break;
 149   }
 150 }
 151
 152
 153 PermissionQueueController::PermissionQueueController(Profile* profile,
 154                                                      ContentSettingsType type)
 155     : profile_(profile),
 156       type_(type),
 157       in_shutdown_(false) {
 158 }
 159
 160 PermissionQueueController::~PermissionQueueController() {
 161   // Cancel all outstanding requests.
 162   in_shutdown_ = true;
 163   while (!pending_infobar_requests_.empty())
 164     CancelInfoBarRequest(pending_infobar_requests_.front().id());
 165 }
 166
 167 void PermissionQueueController::CreateInfoBarRequest(
 168     const PermissionRequestID& id,
 169     const GURL& requesting_frame,
 170     const GURL& embedder,
 171     const PermissionDecidedCallback& callback) {
 172   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 173
 174   if (requesting_frame.SchemeIs(content::kChromeUIScheme) ||
 175       embedder.SchemeIs(content::kChromeUIScheme))
 176     return;
 177
 178   pending_infobar_requests_.push_back(PendingInfobarRequest(
 179       type_, id, requesting_frame, embedder, callback));
 180   if (!AlreadyShowingInfoBarForTab(id))
 181     ShowQueuedInfoBarForTab(id);
 182 }
 183
 184 void PermissionQueueController::CancelInfoBarRequest(
 185     const PermissionRequestID& id) {
 186   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 187
 188   for (PendingInfobarRequests::iterator i(pending_infobar_requests_.begin());
 189        i != pending_infobar_requests_.end(); ++i) {
 190     if (id != i->id())
 191       continue;
 192
 193     InfoBarService* infobar_service = GetInfoBarService(id);
 194     if (infobar_service && i->has_infobar())
 195       infobar_service->RemoveInfoBar(i->infobar());
 196     else
 197       pending_infobar_requests_.erase(i);
 198     return;
 199   }
 200 }
 201
 202 void PermissionQueueController::OnPermissionSet(
 203     const PermissionRequestID& id,
 204     const GURL& requesting_frame,
 205     const GURL& embedder,
 206     bool update_content_setting,
 207     bool allowed) {
 208   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 209
 210   // TODO(miguelg): move the permission persistence to
 211   // PermissionContextBase once all the types are moved there.
 212   if (update_content_setting) {
 213     UpdateContentSetting(requesting_frame, embedder, allowed);
 214     if (allowed)
 215       PermissionContextUmaUtil::PermissionGranted(type_, requesting_frame);
 216     else
 217       PermissionContextUmaUtil::PermissionDenied(type_, requesting_frame);
 218   } else {
 219     PermissionContextUmaUtil::PermissionDismissed(type_, requesting_frame);
 220   }
 221
 222   // Cancel this request first, then notify listeners.  TODO(pkasting): Why
 223   // is this order important?
 224   PendingInfobarRequests requests_to_notify;
 225   PendingInfobarRequests infobars_to_remove;
 226   std::vector<PendingInfobarRequests::iterator> pending_requests_to_remove;
 227   for (PendingInfobarRequests::iterator i = pending_infobar_requests_.begin();
 228        i != pending_infobar_requests_.end(); ++i) {
 229     if (!i->IsForPair(requesting_frame, embedder))
 230       continue;
 231     requests_to_notify.push_back(*i);
 232     if (!i->has_infobar()) {
 233       // We haven't created an infobar yet, just record the pending request
 234       // index and remove it later.
 235       pending_requests_to_remove.push_back(i);
 236       continue;
 237     }
 238     if (id == i->id()) {
 239       // The infobar that called us is i->infobar(), and its delegate is
 240       // currently in either Accept() or Cancel(). This means that
 241       // RemoveInfoBar() will be called later on, and that will trigger a
 242       // notification we're observing.
 243       continue;
 244     }
 245
 246     // This infobar is for the same frame/embedder pair, but in a different
 247     // tab. We should remove it now that we've got an answer for it.
 248     infobars_to_remove.push_back(*i);
 249   }
 250
 251   // Remove all infobars for the same |requesting_frame| and |embedder|.
 252   for (PendingInfobarRequests::iterator i = infobars_to_remove.begin();
 253        i != infobars_to_remove.end(); ++i)
 254     GetInfoBarService(i->id())->RemoveInfoBar(i->infobar());
 255
 256   // PermissionContextBase needs to know about the new ContentSetting value,
 257   // CONTENT_SETTING_DEFAULT being the value for nothing happened. The callers
 258   // of ::OnPermissionSet passes { true, true } for allow, { true, false } for
 259   // block and { false, * } for dismissed. The tuple being
 260   // { update_content_setting, allowed }.
 261   ContentSetting content_setting = CONTENT_SETTING_DEFAULT;
 262   if (update_content_setting) {
 263     content_setting = allowed ? CONTENT_SETTING_ALLOW : CONTENT_SETTING_BLOCK;
 264   }
 265
 266   // Send out the permission notifications.
 267   for (PendingInfobarRequests::iterator i = requests_to_notify.begin();
 268        i != requests_to_notify.end(); ++i)
 269     i->RunCallback(content_setting);
 270
 271   // Remove the pending requests in reverse order.
 272   for (int i = pending_requests_to_remove.size() - 1; i >= 0; --i)
 273     pending_infobar_requests_.erase(pending_requests_to_remove[i]);
 274 }
 275
 276 void PermissionQueueController::Observe(
 277     int type,
 278     const content::NotificationSource& source,
 279     const content::NotificationDetails& details) {
 280   DCHECK_EQ(chrome::NOTIFICATION_TAB_CONTENTS_INFOBAR_REMOVED, type);
 281   // We will receive this notification for all infobar closures, so we need to
 282   // check whether this is the geolocation infobar we're tracking. Note that the
 283   // InfoBarContainer (if any) may have received this notification before us and
 284   // caused the infobar to be deleted, so it's not safe to dereference the
 285   // contents of the infobar. The address of the infobar, however, is OK to
 286   // use to find the PendingInfobarRequest to remove because
 287   // pending_infobar_requests_ will not have received any new entries between
 288   // the NotificationService's call to InfoBarContainer::Observe and this
 289   // method.
 290   infobars::InfoBar* infobar =
 291       content::Details<infobars::InfoBar::RemovedDetails>(details)->first;
 292   for (PendingInfobarRequests::iterator i = pending_infobar_requests_.begin();
 293        i != pending_infobar_requests_.end(); ++i) {
 294     if (i->infobar() == infobar) {
 295       PermissionRequestID id(i->id());
 296       pending_infobar_requests_.erase(i);
 297       ShowQueuedInfoBarForTab(id);
 298       return;
 299     }
 300   }
 301 }
 302
 303 bool PermissionQueueController::AlreadyShowingInfoBarForTab(
 304     const PermissionRequestID& id) const {
 305   for (PendingInfobarRequests::const_iterator i(
 306            pending_infobar_requests_.begin());
 307        i != pending_infobar_requests_.end(); ++i) {
 308     if (ArePermissionRequestsForSameTab(i->id(), id) && i->has_infobar())
 309       return true;
 310   }
 311   return false;
 312 }
 313
 314 void PermissionQueueController::ShowQueuedInfoBarForTab(
 315     const PermissionRequestID& id) {
 316   DCHECK(!AlreadyShowingInfoBarForTab(id));
 317
 318   // We can get here for example during tab shutdown, when the InfoBarService is
 319   // removing all existing infobars, thus calling back to Observe(). In this
 320   // case the service still exists, and is supplied as the source of the
 321   // notification we observed, but is no longer accessible from its WebContents.
 322   // In this case we should just go ahead and cancel further infobars for this
 323   // tab instead of trying to access the service.
 324   //
 325   // Similarly, if we're being destroyed, we should also avoid showing further
 326   // infobars.
 327   InfoBarService* infobar_service = GetInfoBarService(id);
 328   if (!infobar_service || in_shutdown_) {
 329     ClearPendingInfobarRequestsForTab(id);
 330     return;
 331   }
 332
 333   for (PendingInfobarRequests::iterator i = pending_infobar_requests_.begin();
 334        i != pending_infobar_requests_.end(); ++i) {
 335     if (ArePermissionRequestsForSameTab(i->id(), id) && !i->has_infobar()) {
 336       RegisterForInfoBarNotifications(infobar_service);
 337       i->CreateInfoBar(
 338           this, profile_->GetPrefs()->GetString(prefs::kAcceptLanguages));
 339       return;
 340     }
 341   }
 342
 343   UnregisterForInfoBarNotifications(infobar_service);
 344 }
 345
 346 void PermissionQueueController::ClearPendingInfobarRequestsForTab(
 347     const PermissionRequestID& id) {
 348   for (PendingInfobarRequests::iterator i = pending_infobar_requests_.begin();
 349        i != pending_infobar_requests_.end(); ) {
 350     if (ArePermissionRequestsForSameTab(i->id(), id)) {
 351       DCHECK(!i->has_infobar());
 352       i = pending_infobar_requests_.erase(i);
 353     } else {
 354       ++i;
 355     }
 356   }
 357 }
 358
 359 void PermissionQueueController::RegisterForInfoBarNotifications(
 360     InfoBarService* infobar_service) {
 361   if (!registrar_.IsRegistered(
 362       this, chrome::NOTIFICATION_TAB_CONTENTS_INFOBAR_REMOVED,
 363       content::Source<InfoBarService>(infobar_service))) {
 364     registrar_.Add(this,
 365                    chrome::NOTIFICATION_TAB_CONTENTS_INFOBAR_REMOVED,
 366                    content::Source<InfoBarService>(infobar_service));
 367   }
 368 }
 369
 370 void PermissionQueueController::UnregisterForInfoBarNotifications(
 371     InfoBarService* infobar_service) {
 372   if (registrar_.IsRegistered(
 373       this, chrome::NOTIFICATION_TAB_CONTENTS_INFOBAR_REMOVED,
 374       content::Source<InfoBarService>(infobar_service))) {
 375     registrar_.Remove(this,
 376                       chrome::NOTIFICATION_TAB_CONTENTS_INFOBAR_REMOVED,
 377                       content::Source<InfoBarService>(infobar_service));
 378   }
 379 }
 380
 381 void PermissionQueueController::UpdateContentSetting(
 382     const GURL& requesting_frame,
 383     const GURL& embedder,
 384     bool allowed) {
 385   if (requesting_frame.GetOrigin().SchemeIsFile()) {
 386     // Chrome can be launched with --disable-web-security which allows
 387     // geolocation requests from file:// URLs. We don't want to store these
 388     // in the host content settings map.
 389     return;
 390   }
 391
 392   ContentSetting content_setting =
 393       allowed ? CONTENT_SETTING_ALLOW : CONTENT_SETTING_BLOCK;
 394
 395   ContentSettingsPattern embedder_pattern =
 396       (type_ == CONTENT_SETTINGS_TYPE_NOTIFICATIONS) ?
 397       ContentSettingsPattern::Wildcard() :
 398       ContentSettingsPattern::FromURLNoWildcard(embedder.GetOrigin());
 399
 400   profile_->GetHostContentSettingsMap()->SetContentSetting(
 401       ContentSettingsPattern::FromURLNoWildcard(requesting_frame.GetOrigin()),
 402       embedder_pattern,
 403       type_,
 404       std::string(),
 405       content_setting);
 406 }