extensions/browser/guest_view/app_view/app_view_guest.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 "extensions/browser/guest_view/app_view/app_view_guest.h"
   6
   7 #include "base/command_line.h"
   8 #include "content/public/browser/render_view_host.h"
   9 #include "content/public/common/renderer_preferences.h"
  10 #include "extensions/browser/api/app_runtime/app_runtime_api.h"
  11 #include "extensions/browser/api/extensions_api_client.h"
  12 #include "extensions/browser/app_window/app_delegate.h"
  13 #include "extensions/browser/event_router.h"
  14 #include "extensions/browser/extension_host.h"
  15 #include "extensions/browser/extension_registry.h"
  16 #include "extensions/browser/extension_system.h"
  17 #include "extensions/browser/guest_view/app_view/app_view_constants.h"
  18 #include "extensions/browser/guest_view/guest_view_manager.h"
  19 #include "extensions/browser/lazy_background_task_queue.h"
  20 #include "extensions/browser/process_manager.h"
  21 #include "extensions/browser/view_type_utils.h"
  22 #include "extensions/common/api/app_runtime.h"
  23 #include "extensions/common/extension_messages.h"
  24 #include "extensions/strings/grit/extensions_strings.h"
  25 #include "ipc/ipc_message_macros.h"
  26
  27 namespace app_runtime = extensions::core_api::app_runtime;
  28
  29 using content::RenderFrameHost;
  30 using content::WebContents;
  31 using extensions::ExtensionHost;
  32
  33 namespace extensions {
  34
  35 namespace {
  36
  37 struct ResponseInfo {
  38   scoped_refptr<const Extension> guest_extension;
  39   base::WeakPtr<AppViewGuest> app_view_guest;
  40   GuestViewBase::WebContentsCreatedCallback callback;
  41
  42   ResponseInfo(const Extension* guest_extension,
  43                const base::WeakPtr<AppViewGuest>& app_view_guest,
  44                const GuestViewBase::WebContentsCreatedCallback& callback)
  45       : guest_extension(guest_extension),
  46         app_view_guest(app_view_guest),
  47         callback(callback) {}
  48
  49   ~ResponseInfo() {}
  50 };
  51
  52 typedef std::map<int, linked_ptr<ResponseInfo> > PendingResponseMap;
  53 static base::LazyInstance<PendingResponseMap> pending_response_map =
  54     LAZY_INSTANCE_INITIALIZER;
  55
  56 }  // namespace
  57
  58 // static.
  59 const char AppViewGuest::Type[] = "appview";
  60
  61 // static.
  62 bool AppViewGuest::CompletePendingRequest(
  63     content::BrowserContext* browser_context,
  64     const GURL& url,
  65     int guest_instance_id,
  66     const std::string& guest_extension_id) {
  67   PendingResponseMap* response_map = pending_response_map.Pointer();
  68   PendingResponseMap::iterator it = response_map->find(guest_instance_id);
  69   if (it == response_map->end()) {
  70     // TODO(fsamuel): An app is sending invalid responses. We should probably
  71     // kill it.
  72     return false;
  73   }
  74
  75   linked_ptr<ResponseInfo> response_info = it->second;
  76   if (!response_info->app_view_guest ||
  77       (response_info->guest_extension->id() != guest_extension_id)) {
  78     // TODO(fsamuel): An app is trying to respond to an <appview> that didn't
  79     // initiate communication with it. We should kill the app here.
  80     return false;
  81   }
  82
  83   response_info->app_view_guest->CompleteCreateWebContents(
  84       url, response_info->guest_extension.get(), response_info->callback);
  85
  86   response_map->erase(guest_instance_id);
  87   return true;
  88 }
  89
  90 // static
  91 GuestViewBase* AppViewGuest::Create(content::WebContents* owner_web_contents) {
  92   return new AppViewGuest(owner_web_contents);
  93 }
  94
  95 AppViewGuest::AppViewGuest(content::WebContents* owner_web_contents)
  96     : GuestView<AppViewGuest>(owner_web_contents),
  97       app_view_guest_delegate_(
  98           ExtensionsAPIClient::Get()->CreateAppViewGuestDelegate()),
  99       weak_ptr_factory_(this) {
 100   if (app_view_guest_delegate_)
 101     app_delegate_.reset(app_view_guest_delegate_->CreateAppDelegate());
 102 }
 103
 104 AppViewGuest::~AppViewGuest() {
 105 }
 106
 107 WindowController* AppViewGuest::GetExtensionWindowController() const {
 108   return nullptr;
 109 }
 110
 111 content::WebContents* AppViewGuest::GetAssociatedWebContents() const {
 112   return web_contents();
 113 }
 114
 115 bool AppViewGuest::OnMessageReceived(const IPC::Message& message) {
 116   bool handled = true;
 117   IPC_BEGIN_MESSAGE_MAP(AppViewGuest, message)
 118     IPC_MESSAGE_HANDLER(ExtensionHostMsg_Request, OnRequest)
 119     IPC_MESSAGE_UNHANDLED(handled = false)
 120   IPC_END_MESSAGE_MAP()
 121   return handled;
 122 }
 123
 124 bool AppViewGuest::HandleContextMenu(const content::ContextMenuParams& params) {
 125   if (app_view_guest_delegate_) {
 126     return app_view_guest_delegate_->HandleContextMenu(web_contents(), params);
 127   }
 128   return false;
 129 }
 130
 131 void AppViewGuest::RequestMediaAccessPermission(
 132     content::WebContents* web_contents,
 133     const content::MediaStreamRequest& request,
 134     const content::MediaResponseCallback& callback) {
 135   if (!app_delegate_) {
 136     WebContentsDelegate::RequestMediaAccessPermission(web_contents, request,
 137                                                       callback);
 138     return;
 139   }
 140   const ExtensionSet& enabled_extensions =
 141       ExtensionRegistry::Get(browser_context())->enabled_extensions();
 142   const Extension* guest_extension =
 143       enabled_extensions.GetByID(guest_extension_id_);
 144
 145   app_delegate_->RequestMediaAccessPermission(web_contents, request, callback,
 146                                               guest_extension);
 147 }
 148
 149 bool AppViewGuest::CheckMediaAccessPermission(
 150     content::WebContents* web_contents,
 151     const GURL& security_origin,
 152     content::MediaStreamType type) {
 153   if (!app_delegate_) {
 154     return WebContentsDelegate::CheckMediaAccessPermission(
 155         web_contents, security_origin, type);
 156   }
 157   const ExtensionSet& enabled_extensions =
 158       ExtensionRegistry::Get(browser_context())->enabled_extensions();
 159   const Extension* guest_extension =
 160       enabled_extensions.GetByID(guest_extension_id_);
 161
 162   return app_delegate_->CheckMediaAccessPermission(
 163       web_contents, security_origin, type, guest_extension);
 164 }
 165
 166 bool AppViewGuest::CanRunInDetachedState() const {
 167   return true;
 168 }
 169
 170 void AppViewGuest::CreateWebContents(
 171     const base::DictionaryValue& create_params,
 172     const WebContentsCreatedCallback& callback) {
 173   std::string app_id;
 174   if (!create_params.GetString(appview::kAppID, &app_id)) {
 175     callback.Run(nullptr);
 176     return;
 177   }
 178
 179   const base::DictionaryValue* data = nullptr;
 180   if (!create_params.GetDictionary(appview::kData, &data)) {
 181     callback.Run(nullptr);
 182     return;
 183   }
 184
 185   const ExtensionSet& enabled_extensions =
 186       ExtensionRegistry::Get(browser_context())->enabled_extensions();
 187   const Extension* guest_extension = enabled_extensions.GetByID(app_id);
 188   const Extension* embedder_extension =
 189       enabled_extensions.GetByID(GetOwnerSiteURL().host());
 190
 191   if (!guest_extension || !guest_extension->is_platform_app() ||
 192       !embedder_extension | !embedder_extension->is_platform_app()) {
 193     callback.Run(nullptr);
 194     return;
 195   }
 196
 197   pending_response_map.Get().insert(
 198       std::make_pair(guest_instance_id(),
 199                      make_linked_ptr(new ResponseInfo(
 200                                         guest_extension,
 201                                         weak_ptr_factory_.GetWeakPtr(),
 202                                         callback))));
 203
 204   LazyBackgroundTaskQueue* queue =
 205       ExtensionSystem::Get(browser_context())->lazy_background_task_queue();
 206   if (queue->ShouldEnqueueTask(browser_context(), guest_extension)) {
 207     queue->AddPendingTask(browser_context(),
 208                           guest_extension->id(),
 209                           base::Bind(
 210                               &AppViewGuest::LaunchAppAndFireEvent,
 211                               weak_ptr_factory_.GetWeakPtr(),
 212                               base::Passed(make_scoped_ptr(data->DeepCopy())),
 213                               callback));
 214     return;
 215   }
 216
 217   ProcessManager* process_manager = ProcessManager::Get(browser_context());
 218   ExtensionHost* host =
 219       process_manager->GetBackgroundHostForExtension(guest_extension->id());
 220   DCHECK(host);
 221   LaunchAppAndFireEvent(make_scoped_ptr(data->DeepCopy()), callback, host);
 222 }
 223
 224 void AppViewGuest::DidInitialize(const base::DictionaryValue& create_params) {
 225   extension_function_dispatcher_.reset(
 226       new ExtensionFunctionDispatcher(browser_context(), this));
 227
 228   if (!url_.is_valid())
 229     return;
 230
 231   web_contents()->GetController().LoadURL(
 232       url_, content::Referrer(), ui::PAGE_TRANSITION_LINK, std::string());
 233 }
 234
 235 const char* AppViewGuest::GetAPINamespace() const {
 236   return appview::kEmbedderAPINamespace;
 237 }
 238
 239 int AppViewGuest::GetTaskPrefix() const {
 240   return IDS_EXTENSION_TASK_MANAGER_APPVIEW_TAG_PREFIX;
 241 }
 242
 243 void AppViewGuest::OnRequest(const ExtensionHostMsg_Request_Params& params) {
 244   extension_function_dispatcher_->Dispatch(params,
 245                                            web_contents()->GetRenderViewHost());
 246 }
 247
 248 void AppViewGuest::CompleteCreateWebContents(
 249     const GURL& url,
 250     const Extension* guest_extension,
 251     const WebContentsCreatedCallback& callback) {
 252   if (!url.is_valid()) {
 253     callback.Run(nullptr);
 254     return;
 255   }
 256   url_ = url;
 257   guest_extension_id_ = guest_extension->id();
 258
 259   WebContents::CreateParams params(
 260       browser_context(),
 261       content::SiteInstance::CreateForURL(browser_context(),
 262                                           guest_extension->url()));
 263   params.guest_delegate = this;
 264   callback.Run(WebContents::Create(params));
 265 }
 266
 267 void AppViewGuest::LaunchAppAndFireEvent(
 268     scoped_ptr<base::DictionaryValue> data,
 269     const WebContentsCreatedCallback& callback,
 270     ExtensionHost* extension_host) {
 271   ExtensionSystem* system = ExtensionSystem::Get(browser_context());
 272   bool has_event_listener = system->event_router()->ExtensionHasEventListener(
 273       extension_host->extension()->id(),
 274       app_runtime::OnEmbedRequested::kEventName);
 275   if (!has_event_listener) {
 276     callback.Run(nullptr);
 277     return;
 278   }
 279
 280   scoped_ptr<base::DictionaryValue> embed_request(new base::DictionaryValue());
 281   embed_request->SetInteger(appview::kGuestInstanceID, guest_instance_id());
 282   embed_request->SetString(appview::kEmbedderID, owner_extension_id());
 283   embed_request->Set(appview::kData, data.release());
 284   AppRuntimeEventRouter::DispatchOnEmbedRequestedEvent(
 285       browser_context(), embed_request.Pass(), extension_host->extension());
 286 }
 287
 288 void AppViewGuest::SetAppDelegateForTest(AppDelegate* delegate) {
 289   app_delegate_.reset(delegate);
 290 }
 291
 292 }  // namespace extensions