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.
5 #ifndef EXTENSIONS_RENDERER_DISPATCHER_H_
6 #define EXTENSIONS_RENDERER_DISPATCHER_H_
14 #include "base/scoped_observer.h"
15 #include "base/timer/timer.h"
16 #include "content/public/renderer/render_process_observer.h"
17 #include "extensions/common/event_filter.h"
18 #include "extensions/common/extension_set.h"
19 #include "extensions/common/extensions_client.h"
20 #include "extensions/common/features/feature.h"
21 #include "extensions/renderer/resource_bundle_source_map.h"
22 #include "extensions/renderer/script_context.h"
23 #include "extensions/renderer/script_context_set.h"
24 #include "extensions/renderer/user_script_set_manager.h"
25 #include "extensions/renderer/v8_schema_registry.h"
26 #include "third_party/WebKit/public/platform/WebString.h"
27 #include "third_party/WebKit/public/platform/WebVector.h"
28 #include "v8/include/v8.h"
30 class ChromeRenderViewTest;
34 struct ExtensionMsg_ExternalConnectionInfo;
35 struct ExtensionMsg_Loaded_Params;
36 struct ExtensionMsg_UpdatePermissions_Params;
40 class WebSecurityOrigin;
44 class DictionaryValue;
52 namespace extensions {
54 class DispatcherDelegate;
56 class FilteredEventRouter;
57 class ManifestPermissionSet;
60 class ScriptInjectionManager;
63 // Dispatches extension control messages sent to the renderer and stores
64 // renderer extension related state.
65 class Dispatcher : public content::RenderProcessObserver,
66 public UserScriptSetManager::Observer {
68 explicit Dispatcher(DispatcherDelegate* delegate);
69 virtual ~Dispatcher();
71 const std::set<std::string>& function_names() const {
72 return function_names_;
75 bool is_extension_process() const { return is_extension_process_; }
77 const ExtensionSet* extensions() const { return &extensions_; }
79 const ScriptContextSet& script_context_set() const {
80 return script_context_set_;
83 V8SchemaRegistry* v8_schema_registry() { return v8_schema_registry_.get(); }
85 ContentWatcher* content_watcher() { return content_watcher_.get(); }
87 RequestSender* request_sender() { return request_sender_.get(); }
89 void OnRenderViewCreated(content::RenderView* render_view);
91 bool IsExtensionActive(const std::string& extension_id) const;
93 // Finds the extension ID for the JavaScript context associated with the
94 // specified |frame| and isolated world. If |world_id| is zero, finds the
95 // extension ID associated with the main world's JavaScript context. If the
96 // JavaScript context isn't from an extension, returns empty string.
97 std::string GetExtensionID(const blink::WebFrame* frame, int world_id);
99 void DidCreateScriptContext(blink::WebFrame* frame,
100 const v8::Handle<v8::Context>& context,
104 void WillReleaseScriptContext(blink::WebFrame* frame,
105 const v8::Handle<v8::Context>& context,
108 void DidCreateDocumentElement(blink::WebFrame* frame);
111 blink::WebFrame* frame,
112 const blink::WebVector<blink::WebString>& newly_matching_selectors,
113 const blink::WebVector<blink::WebString>& stopped_matching_selectors);
115 void OnExtensionResponse(int request_id,
117 const base::ListValue& response,
118 const std::string& error);
120 // Checks that the current context contains an extension that has permission
121 // to execute the specified function. If it does not, a v8 exception is thrown
122 // and the method returns false. Otherwise returns true.
123 bool CheckContextAccessToExtensionAPI(const std::string& function_name,
124 ScriptContext* context) const;
126 // Dispatches the event named |event_name| to all render views.
127 void DispatchEvent(const std::string& extension_id,
128 const std::string& event_name) const;
130 // Shared implementation of the various MessageInvoke IPCs.
131 void InvokeModuleSystemMethod(content::RenderView* render_view,
132 const std::string& extension_id,
133 const std::string& module_name,
134 const std::string& function_name,
135 const base::ListValue& args,
138 void ClearPortData(int port_id);
140 // Returns a list of (module name, resource id) pairs for the JS modules to
141 // add to the source map.
142 static std::vector<std::pair<std::string, int> > GetJsResources();
143 static void RegisterNativeHandlers(ModuleSystem* module_system,
144 ScriptContext* context,
145 Dispatcher* dispatcher,
146 RequestSender* request_sender,
147 V8SchemaRegistry* v8_schema_registry);
150 friend class ::ChromeRenderViewTest;
151 FRIEND_TEST_ALL_PREFIXES(RendererPermissionsPolicyDelegateTest,
152 CannotScriptWebstore);
154 // RenderProcessObserver implementation:
155 virtual bool OnControlMessageReceived(const IPC::Message& message) OVERRIDE;
156 virtual void WebKitInitialized() OVERRIDE;
157 virtual void IdleNotification() OVERRIDE;
158 virtual void OnRenderProcessShutdown() OVERRIDE;
160 void OnActivateExtension(const std::string& extension_id);
161 void OnCancelSuspend(const std::string& extension_id);
162 void OnClearTabSpecificPermissions(
164 const std::vector<std::string>& extension_ids);
165 void OnDeliverMessage(int target_port_id, const Message& message);
166 void OnDispatchOnConnect(int target_port_id,
167 const std::string& channel_name,
168 const base::DictionaryValue& source_tab,
169 const ExtensionMsg_ExternalConnectionInfo& info,
170 const std::string& tls_channel_id);
171 void OnDispatchOnDisconnect(int port_id, const std::string& error_message);
173 const std::vector<ExtensionMsg_Loaded_Params>& loaded_extensions);
174 void OnLoadedInternal(scoped_refptr<const Extension> extension);
175 void OnMessageInvoke(const std::string& extension_id,
176 const std::string& module_name,
177 const std::string& function_name,
178 const base::ListValue& args,
180 void OnSetChannel(int channel);
181 void OnSetFunctionNames(const std::vector<std::string>& names);
182 void OnSetScriptingWhitelist(
183 const ExtensionsClient::ScriptingWhitelist& extension_ids);
184 void OnSetSystemFont(const std::string& font_family,
185 const std::string& font_size);
186 void OnShouldSuspend(const std::string& extension_id, uint64 sequence_id);
187 void OnSuspend(const std::string& extension_id);
188 void OnTransferBlobs(const std::vector<std::string>& blob_uuids);
189 void OnUnloaded(const std::string& id);
190 void OnUpdatePermissions(const ExtensionMsg_UpdatePermissions_Params& params);
191 void OnUpdateTabSpecificPermissions(const GURL& url,
193 const std::string& extension_id,
194 const URLPatternSet& origin_set);
195 void OnUsingWebRequestAPI(bool webrequest_used);
197 // UserScriptSetManager::Observer implementation.
198 virtual void OnUserScriptsUpdated(
199 const std::set<std::string>& changed_extensions,
200 const std::vector<UserScript*>& scripts) OVERRIDE;
202 void UpdateActiveExtensions();
204 // Sets up the host permissions for |extension|.
205 void InitOriginPermissions(const Extension* extension);
207 // Updates the host permissions for extension to include only those in
208 // |new_patterns|, and remove from |old_patterns| that are no longer allowed.
209 void UpdateOriginPermissions(const Extension* extension,
210 const URLPatternSet& old_patterns,
211 const URLPatternSet& new_patterns);
213 // Enable custom element whitelist in Apps.
214 void EnableCustomElementWhiteList();
216 // Adds or removes bindings for every context belonging to |extension_id|, or
217 // or all contexts if |extension_id| is empty.
218 void UpdateBindings(const std::string& extension_id);
220 void UpdateBindingsForContext(ScriptContext* context);
222 void RegisterBinding(const std::string& api_name, ScriptContext* context);
224 void RegisterNativeHandlers(ModuleSystem* module_system,
225 ScriptContext* context);
227 // Inserts static source code into |source_map_|.
228 void PopulateSourceMap();
230 // Returns whether the current renderer hosts a platform app.
231 bool IsWithinPlatformApp();
233 bool IsSandboxedPage(const GURL& url) const;
235 // Returns the Feature::Context type of context for a JavaScript context.
236 Feature::Context ClassifyJavaScriptContext(
237 const Extension* extension,
240 const blink::WebSecurityOrigin& origin);
242 // Gets |field| from |object| or creates it as an empty object if it doesn't
244 v8::Handle<v8::Object> GetOrCreateObject(const v8::Handle<v8::Object>& object,
245 const std::string& field,
246 v8::Isolate* isolate);
248 v8::Handle<v8::Object> GetOrCreateBindObjectIfAvailable(
249 const std::string& api_name,
250 std::string* bind_name,
251 ScriptContext* context);
253 // The delegate for this dispatcher. Not owned, but must extend beyond the
254 // Dispatcher's own lifetime.
255 DispatcherDelegate* delegate_;
257 // True if this renderer is running extensions.
258 bool is_extension_process_;
260 // Contains all loaded extensions. This is essentially the renderer
261 // counterpart to ExtensionService in the browser. It contains information
262 // about all extensions currently loaded by the browser.
263 ExtensionSet extensions_;
265 // The IDs of extensions that failed to load, mapped to the error message
266 // generated on failure.
267 std::map<std::string, std::string> extension_load_errors_;
269 // All the bindings contexts that are currently loaded for this renderer.
270 // There is zero or one for each v8 context.
271 ScriptContextSet script_context_set_;
273 scoped_ptr<ContentWatcher> content_watcher_;
275 scoped_ptr<UserScriptSetManager> user_script_set_manager_;
277 scoped_ptr<ScriptInjectionManager> script_injection_manager_;
279 // Same as above, but on a longer timer and will run even if the process is
280 // not idle, to ensure that IdleHandle gets called eventually.
281 scoped_ptr<base::RepeatingTimer<content::RenderThread> > forced_idle_timer_;
283 // All declared function names.
284 std::set<std::string> function_names_;
286 // The extensions and apps that are active in this process.
287 std::set<std::string> active_extension_ids_;
289 ResourceBundleSourceMap source_map_;
291 // Cache for the v8 representation of extension API schemas.
292 scoped_ptr<V8SchemaRegistry> v8_schema_registry_;
294 // Sends API requests to the extension host.
295 scoped_ptr<RequestSender> request_sender_;
297 // The platforms system font family and size;
298 std::string system_font_family_;
299 std::string system_font_size_;
301 // Mapping of port IDs to tabs. If there is no tab, the value would be -1.
302 std::map<int, int> port_to_tab_id_map_;
304 // True once WebKit has been initialized (and it is therefore safe to poke).
305 bool is_webkit_initialized_;
307 // It is important for this to come after the ScriptInjectionManager, so that
308 // the observer is destroyed before the UserScriptSet.
309 ScopedObserver<UserScriptSetManager, UserScriptSetManager::Observer>
310 user_script_set_manager_observer_;
312 DISALLOW_COPY_AND_ASSIGN(Dispatcher);
315 } // namespace extensions
317 #endif // EXTENSIONS_RENDERER_DISPATCHER_H_