extensions/renderer/dispatcher.h

   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 #ifndef EXTENSIONS_RENDERER_DISPATCHER_H_
   6 #define EXTENSIONS_RENDERER_DISPATCHER_H_
   7
   8 #include <map>
   9 #include <set>
  10 #include <string>
  11 #include <utility>
  12 #include <vector>
  13
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/scoped_observer.h"
  16 #include "base/timer/timer.h"
  17 #include "content/public/renderer/render_process_observer.h"
  18 #include "extensions/common/event_filter.h"
  19 #include "extensions/common/extension.h"
  20 #include "extensions/common/extensions_client.h"
  21 #include "extensions/common/features/feature.h"
  22 #include "extensions/renderer/resource_bundle_source_map.h"
  23 #include "extensions/renderer/script_context.h"
  24 #include "extensions/renderer/script_context_set.h"
  25 #include "extensions/renderer/user_script_set_manager.h"
  26 #include "extensions/renderer/v8_schema_registry.h"
  27 #include "third_party/WebKit/public/platform/WebString.h"
  28 #include "third_party/WebKit/public/platform/WebVector.h"
  29 #include "v8/include/v8.h"
  30
  31 class ChromeRenderViewTest;
  32 class GURL;
  33 class ModuleSystem;
  34 class URLPattern;
  35 struct ExtensionMsg_ExternalConnectionInfo;
  36 struct ExtensionMsg_Loaded_Params;
  37 struct ExtensionMsg_TabConnectionInfo;
  38 struct ExtensionMsg_UpdatePermissions_Params;
  39
  40 namespace blink {
  41 class WebFrame;
  42 class WebLocalFrame;
  43 class WebSecurityOrigin;
  44 }
  45
  46 namespace base {
  47 class ListValue;
  48 }
  49
  50 namespace content {
  51 class RenderThread;
  52 }
  53
  54 namespace extensions {
  55 class ContentWatcher;
  56 class DispatcherDelegate;
  57 class FilteredEventRouter;
  58 class ManifestPermissionSet;
  59 class RequestSender;
  60 class ScriptContext;
  61 class ScriptInjectionManager;
  62 struct Message;
  63
  64 // Dispatches extension control messages sent to the renderer and stores
  65 // renderer extension related state.
  66 class Dispatcher : public content::RenderProcessObserver,
  67                    public UserScriptSetManager::Observer {
  68  public:
  69   explicit Dispatcher(DispatcherDelegate* delegate);
  70   ~Dispatcher() override;
  71
  72   const ScriptContextSet& script_context_set() const {
  73     return *script_context_set_;
  74   }
  75
  76   V8SchemaRegistry* v8_schema_registry() { return v8_schema_registry_.get(); }
  77
  78   ContentWatcher* content_watcher() { return content_watcher_.get(); }
  79
  80   RequestSender* request_sender() { return request_sender_.get(); }
  81
  82   void OnRenderFrameCreated(content::RenderFrame* render_frame);
  83
  84   bool IsExtensionActive(const std::string& extension_id) const;
  85
  86   void DidCreateScriptContext(blink::WebLocalFrame* frame,
  87                               const v8::Local<v8::Context>& context,
  88                               int extension_group,
  89                               int world_id);
  90
  91   // Runs on a different thread and should not use any member variables.
  92   static void DidInitializeServiceWorkerContextOnWorkerThread(
  93       v8::Local<v8::Context> v8_context,
  94       const GURL& url);
  95
  96   void WillReleaseScriptContext(blink::WebLocalFrame* frame,
  97                                 const v8::Local<v8::Context>& context,
  98                                 int world_id);
  99
 100   // Runs on a different thread and should not use any member variables.
 101   static void WillDestroyServiceWorkerContextOnWorkerThread(const GURL& url);
 102
 103   void DidCreateDocumentElement(blink::WebLocalFrame* frame);
 104
 105   void OnExtensionResponse(int request_id,
 106                            bool success,
 107                            const base::ListValue& response,
 108                            const std::string& error);
 109
 110   // Dispatches the event named |event_name| to all render views.
 111   void DispatchEvent(const std::string& extension_id,
 112                      const std::string& event_name) const;
 113
 114   // Shared implementation of the various MessageInvoke IPCs.
 115   void InvokeModuleSystemMethod(content::RenderFrame* render_frame,
 116                                 const std::string& extension_id,
 117                                 const std::string& module_name,
 118                                 const std::string& function_name,
 119                                 const base::ListValue& args,
 120                                 bool user_gesture);
 121
 122   void ClearPortData(int port_id);
 123
 124   // Returns a list of (module name, resource id) pairs for the JS modules to
 125   // add to the source map.
 126   static std::vector<std::pair<std::string, int> > GetJsResources();
 127   static void RegisterNativeHandlers(ModuleSystem* module_system,
 128                                      ScriptContext* context,
 129                                      Dispatcher* dispatcher,
 130                                      RequestSender* request_sender,
 131                                      V8SchemaRegistry* v8_schema_registry);
 132
 133   bool WasWebRequestUsedBySomeExtensions() const { return webrequest_used_; }
 134
 135  private:
 136   // The RendererPermissionsPolicyDelegateTest.CannotScriptWebstore test needs
 137   // to call the OnActivateExtension IPCs.
 138   friend class ::ChromeRenderViewTest;
 139   FRIEND_TEST_ALL_PREFIXES(RendererPermissionsPolicyDelegateTest,
 140                            CannotScriptWebstore);
 141
 142   // RenderProcessObserver implementation:
 143   bool OnControlMessageReceived(const IPC::Message& message) override;
 144   void WebKitInitialized() override;
 145   void IdleNotification() override;
 146   void OnRenderProcessShutdown() override;
 147
 148   void OnActivateExtension(const std::string& extension_id);
 149   void OnCancelSuspend(const std::string& extension_id);
 150   void OnDeliverMessage(int target_port_id, const Message& message);
 151   void OnDispatchOnConnect(int target_port_id,
 152                            const std::string& channel_name,
 153                            const ExtensionMsg_TabConnectionInfo& source,
 154                            const ExtensionMsg_ExternalConnectionInfo& info,
 155                            const std::string& tls_channel_id);
 156   void OnDispatchOnDisconnect(int port_id, const std::string& error_message);
 157   void OnLoaded(
 158       const std::vector<ExtensionMsg_Loaded_Params>& loaded_extensions);
 159   void OnMessageInvoke(const std::string& extension_id,
 160                        const std::string& module_name,
 161                        const std::string& function_name,
 162                        const base::ListValue& args,
 163                        bool user_gesture);
 164   void OnSetChannel(int channel);
 165   void OnSetScriptingWhitelist(
 166       const ExtensionsClient::ScriptingWhitelist& extension_ids);
 167   void OnSetSystemFont(const std::string& font_family,
 168                        const std::string& font_size);
 169   void OnShouldSuspend(const std::string& extension_id, uint64 sequence_id);
 170   void OnSuspend(const std::string& extension_id);
 171   void OnTransferBlobs(const std::vector<std::string>& blob_uuids);
 172   void OnUnloaded(const std::string& id);
 173   void OnUpdatePermissions(const ExtensionMsg_UpdatePermissions_Params& params);
 174   void OnUpdateTabSpecificPermissions(const GURL& visible_url,
 175                                       const std::string& extension_id,
 176                                       const URLPatternSet& new_hosts,
 177                                       bool update_origin_whitelist,
 178                                       int tab_id);
 179   void OnClearTabSpecificPermissions(
 180       const std::vector<std::string>& extension_ids,
 181       bool update_origin_whitelist,
 182       int tab_id);
 183   void OnUsingWebRequestAPI(bool webrequest_used);
 184
 185   // UserScriptSetManager::Observer implementation.
 186   void OnUserScriptsUpdated(const std::set<HostID>& changed_hosts,
 187                             const std::vector<UserScript*>& scripts) override;
 188
 189   void UpdateActiveExtensions();
 190
 191   // Sets up the host permissions for |extension|.
 192   void InitOriginPermissions(const Extension* extension);
 193
 194   // Updates the host permissions for the extension url to include only those in
 195   // |new_patterns|, and remove from |old_patterns| that are no longer allowed.
 196   void UpdateOriginPermissions(const GURL& extension_url,
 197                                const URLPatternSet& old_patterns,
 198                                const URLPatternSet& new_patterns);
 199
 200   // Enable custom element whitelist in Apps.
 201   void EnableCustomElementWhiteList();
 202
 203   // Adds or removes bindings for every context belonging to |extension_id|, or
 204   // or all contexts if |extension_id| is empty.
 205   void UpdateBindings(const std::string& extension_id);
 206
 207   void UpdateBindingsForContext(ScriptContext* context);
 208
 209   void RegisterBinding(const std::string& api_name, ScriptContext* context);
 210
 211   void RegisterNativeHandlers(ModuleSystem* module_system,
 212                               ScriptContext* context);
 213
 214   // Determines if a ScriptContext can connect to any externally_connectable-
 215   // enabled extension.
 216   bool IsRuntimeAvailableToContext(ScriptContext* context);
 217
 218   // Updates a web page context with any content capabilities granted by active
 219   // extensions.
 220   void UpdateContentCapabilities(ScriptContext* context);
 221
 222   // Inserts static source code into |source_map_|.
 223   void PopulateSourceMap();
 224
 225   // Returns whether the current renderer hosts a platform app.
 226   bool IsWithinPlatformApp();
 227
 228   // Gets |field| from |object| or creates it as an empty object if it doesn't
 229   // exist.
 230   v8::Local<v8::Object> GetOrCreateObject(const v8::Local<v8::Object>& object,
 231                                           const std::string& field,
 232                                           v8::Isolate* isolate);
 233
 234   v8::Local<v8::Object> GetOrCreateBindObjectIfAvailable(
 235       const std::string& api_name,
 236       std::string* bind_name,
 237       ScriptContext* context);
 238
 239   // Requires the GuestView modules in the module system of the ScriptContext
 240   // |context|.
 241   void RequireGuestViewModules(ScriptContext* context);
 242
 243   // Adds features that are specific to the current channel.
 244   void AddChannelSpecificFeatures();
 245
 246   // The delegate for this dispatcher. Not owned, but must extend beyond the
 247   // Dispatcher's own lifetime.
 248   DispatcherDelegate* delegate_;
 249
 250   // True if the IdleNotification timer should be set.
 251   bool set_idle_notifications_;
 252
 253   // The IDs of extensions that failed to load, mapped to the error message
 254   // generated on failure.
 255   std::map<std::string, std::string> extension_load_errors_;
 256
 257   // All the bindings contexts that are currently loaded for this renderer.
 258   // There is zero or one for each v8 context.
 259   scoped_ptr<ScriptContextSet> script_context_set_;
 260
 261   scoped_ptr<ContentWatcher> content_watcher_;
 262
 263   scoped_ptr<UserScriptSetManager> user_script_set_manager_;
 264
 265   scoped_ptr<ScriptInjectionManager> script_injection_manager_;
 266
 267   // Same as above, but on a longer timer and will run even if the process is
 268   // not idle, to ensure that IdleHandle gets called eventually.
 269   scoped_ptr<base::RepeatingTimer<content::RenderThread> > forced_idle_timer_;
 270
 271   // The extensions and apps that are active in this process.
 272   ExtensionIdSet active_extension_ids_;
 273
 274   ResourceBundleSourceMap source_map_;
 275
 276   // Cache for the v8 representation of extension API schemas.
 277   scoped_ptr<V8SchemaRegistry> v8_schema_registry_;
 278
 279   // Sends API requests to the extension host.
 280   scoped_ptr<RequestSender> request_sender_;
 281
 282   // The platforms system font family and size;
 283   std::string system_font_family_;
 284   std::string system_font_size_;
 285
 286   // Mapping of port IDs to tabs. If there is no tab, the value would be -1.
 287   std::map<int, int> port_to_tab_id_map_;
 288
 289   // True once WebKit has been initialized (and it is therefore safe to poke).
 290   bool is_webkit_initialized_;
 291
 292   // It is important for this to come after the ScriptInjectionManager, so that
 293   // the observer is destroyed before the UserScriptSet.
 294   ScopedObserver<UserScriptSetManager, UserScriptSetManager::Observer>
 295       user_script_set_manager_observer_;
 296
 297   // Status of webrequest usage.
 298   bool webrequest_used_;
 299
 300   DISALLOW_COPY_AND_ASSIGN(Dispatcher);
 301 };
 302
 303 }  // namespace extensions
 304
 305 #endif  // EXTENSIONS_RENDERER_DISPATCHER_H_