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| 1 // Copyright (c) 2011 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/renderer/extensions/extension_process_bindings.h" | |
| 6 | |
| 7 #include <map> | |
| 8 #include <set> | |
| 9 #include <string> | |
| 10 #include <vector> | |
| 11 | |
| 12 #include "base/callback.h" | |
| 13 #include "base/command_line.h" | |
| 14 #include "base/json/json_reader.h" | |
| 15 #include "base/lazy_instance.h" | |
| 16 #include "base/memory/scoped_ptr.h" | |
| 17 #include "base/string_number_conversions.h" | |
| 18 #include "base/string_util.h" | |
| 19 #include "base/utf_string_conversions.h" | |
| 20 #include "chrome/common/extensions/extension.h" | |
| 21 #include "chrome/common/extensions/extension_action.h" | |
| 22 #include "chrome/common/extensions/extension_constants.h" | |
| 23 #include "chrome/common/extensions/extension_messages.h" | |
| 24 #include "chrome/common/extensions/extension_set.h" | |
| 25 #include "chrome/common/extensions/url_pattern.h" | |
| 26 #include "chrome/common/render_messages.h" | |
| 27 #include "chrome/common/url_constants.h" | |
| 28 #include "chrome/common/chrome_view_types.h" | |
| 29 #include "content/public/renderer/render_view.h" | |
| 30 #include "content/public/renderer/render_view_visitor.h" | |
| 31 #include "chrome/renderer/chrome_render_process_observer.h" | |
| 32 #include "chrome/renderer/extensions/chrome_v8_context.h" | |
| 33 #include "chrome/renderer/extensions/chrome_v8_context_set.h" | |
| 34 #include "chrome/renderer/extensions/chrome_v8_extension.h" | |
| 35 #include "chrome/renderer/extensions/event_bindings.h" | |
| 36 #include "chrome/renderer/extensions/extension_dispatcher.h" | |
| 37 #include "chrome/renderer/extensions/extension_helper.h" | |
| 38 #include "chrome/renderer/extensions/renderer_extension_bindings.h" | |
| 39 #include "chrome/renderer/extensions/user_script_slave.h" | |
| 40 #include "chrome/renderer/static_v8_external_string_resource.h" | |
| 41 #include "content/public/renderer/render_view.h" | |
| 42 #include "grit/common_resources.h" | |
| 43 #include "grit/renderer_resources.h" | |
| 44 #include "third_party/WebKit/Source/WebKit/chromium/public/WebBlob.h" | |
| 45 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h" | |
| 46 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h" | |
| 47 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h" | |
| 48 #include "third_party/skia/include/core/SkBitmap.h" | |
| 49 #include "third_party/skia/include/core/SkColor.h" | |
| 50 #include "ui/base/resource/resource_bundle.h" | |
| 51 #include "v8/include/v8.h" | |
| 52 #include "webkit/glue/webkit_glue.h" | |
| 53 | |
| 54 using WebKit::WebFrame; | |
| 55 using WebKit::WebView; | |
| 56 | |
| 57 namespace { | |
| 58 | |
| 59 const char* kExtensionDeps[] = { | |
| 60 "extensions/event.js", | |
| 61 "extensions/json_schema.js", | |
| 62 "extensions/renderer_extension_bindings.js", | |
| 63 "extensions/apitest.js" | |
| 64 }; | |
| 65 | |
| 66 // Contains info relevant to a pending API request. | |
| 67 struct PendingRequest { | |
| 68 public : | |
| 69 PendingRequest(v8::Persistent<v8::Context> context, const std::string& name, | |
| 70 const std::string& extension_id) | |
| 71 : context(context), name(name), extension_id(extension_id) { | |
| 72 } | |
| 73 v8::Persistent<v8::Context> context; | |
| 74 std::string name; | |
| 75 std::string extension_id; | |
| 76 }; | |
| 77 typedef std::map<int, linked_ptr<PendingRequest> > PendingRequestMap; | |
| 78 | |
| 79 base::LazyInstance<PendingRequestMap> g_pending_requests( | |
| 80 base::LINKER_INITIALIZED); | |
| 81 | |
| 82 // A RenderViewVisitor class that iterates through the set of available | |
| 83 // views, looking for a view of the given type, in the given browser window | |
| 84 // and within the given extension. | |
| 85 // Used to accumulate the list of views associated with an extension. | |
| 86 class ExtensionViewAccumulator : public content::RenderViewVisitor { | |
| 87 public: | |
| 88 ExtensionViewAccumulator(const std::string& extension_id, | |
| 89 int browser_window_id, | |
| 90 content::ViewType view_type) | |
| 91 : extension_id_(extension_id), | |
| 92 browser_window_id_(browser_window_id), | |
| 93 view_type_(view_type), | |
| 94 views_(v8::Array::New()), | |
| 95 index_(0) { | |
| 96 } | |
| 97 | |
| 98 v8::Local<v8::Array> views() { return views_; } | |
| 99 | |
| 100 virtual bool Visit(content::RenderView* render_view) { | |
| 101 ExtensionHelper* helper = ExtensionHelper::Get(render_view); | |
| 102 if (!ViewTypeMatches(helper->view_type(), view_type_)) | |
| 103 return true; | |
| 104 | |
| 105 GURL url = render_view->GetWebView()->mainFrame()->document().url(); | |
| 106 if (!url.SchemeIs(chrome::kExtensionScheme)) | |
| 107 return true; | |
| 108 const std::string& extension_id = url.host(); | |
| 109 if (extension_id != extension_id_) | |
| 110 return true; | |
| 111 | |
| 112 if (browser_window_id_ != extension_misc::kUnknownWindowId && | |
| 113 helper->browser_window_id() != browser_window_id_) { | |
| 114 return true; | |
| 115 } | |
| 116 | |
| 117 v8::Local<v8::Context> context = | |
| 118 render_view->GetWebView()->mainFrame()->mainWorldScriptContext(); | |
| 119 if (!context.IsEmpty()) { | |
| 120 v8::Local<v8::Value> window = context->Global(); | |
| 121 DCHECK(!window.IsEmpty()); | |
| 122 | |
| 123 if (!OnMatchedView(window)) | |
| 124 return false; | |
| 125 } | |
| 126 return true; | |
| 127 } | |
| 128 | |
| 129 private: | |
| 130 // Called on each view found matching the search criteria. Returns false | |
| 131 // to terminate the iteration. | |
| 132 bool OnMatchedView(v8::Local<v8::Value> view_window) { | |
| 133 views_->Set(v8::Integer::New(index_), view_window); | |
| 134 index_++; | |
| 135 | |
| 136 if (view_type_ == chrome::VIEW_TYPE_EXTENSION_BACKGROUND_PAGE) | |
| 137 return false; // There can be only one... | |
| 138 | |
| 139 return true; | |
| 140 } | |
| 141 | |
| 142 // Returns true is |type| "isa" |match|. | |
| 143 static bool ViewTypeMatches(content::ViewType type, content::ViewType match) { | |
| 144 if (type == match) | |
| 145 return true; | |
| 146 | |
| 147 // INVALID means match all. | |
| 148 if (match == content::VIEW_TYPE_INVALID) | |
| 149 return true; | |
| 150 | |
| 151 return false; | |
| 152 } | |
| 153 | |
| 154 std::string extension_id_; | |
| 155 int browser_window_id_; | |
| 156 content::ViewType view_type_; | |
| 157 v8::Local<v8::Array> views_; | |
| 158 int index_; | |
| 159 }; | |
| 160 | |
| 161 class ExtensionImpl : public ChromeV8Extension { | |
| 162 public: | |
| 163 explicit ExtensionImpl(ExtensionDispatcher* extension_dispatcher) | |
| 164 : ChromeV8Extension("extensions/extension_process_bindings.js", | |
| 165 IDR_EXTENSION_PROCESS_BINDINGS_JS, | |
| 166 arraysize(kExtensionDeps), | |
| 167 kExtensionDeps, | |
| 168 extension_dispatcher) { | |
| 169 } | |
| 170 ~ExtensionImpl() {} | |
| 171 | |
| 172 virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction( | |
| 173 v8::Handle<v8::String> name) { | |
| 174 if (name->Equals(v8::String::New("GetExtensionAPIDefinition"))) { | |
| 175 return v8::FunctionTemplate::New(GetExtensionAPIDefinition); | |
| 176 } else if (name->Equals(v8::String::New("GetExtensionViews"))) { | |
| 177 return v8::FunctionTemplate::New(GetExtensionViews, | |
| 178 v8::External::New(this)); | |
| 179 } else if (name->Equals(v8::String::New("GetNextRequestId"))) { | |
| 180 return v8::FunctionTemplate::New(GetNextRequestId); | |
| 181 } else if (name->Equals(v8::String::New("OpenChannelToTab"))) { | |
| 182 return v8::FunctionTemplate::New(OpenChannelToTab); | |
| 183 } else if (name->Equals(v8::String::New("GetNextContextMenuId"))) { | |
| 184 return v8::FunctionTemplate::New(GetNextContextMenuId); | |
| 185 } else if (name->Equals(v8::String::New("GetNextTtsEventId"))) { | |
| 186 return v8::FunctionTemplate::New(GetNextTtsEventId); | |
| 187 } else if (name->Equals(v8::String::New("GetCurrentPageActions"))) { | |
| 188 return v8::FunctionTemplate::New(GetCurrentPageActions, | |
| 189 v8::External::New(this)); | |
| 190 } else if (name->Equals(v8::String::New("StartRequest"))) { | |
| 191 return v8::FunctionTemplate::New(StartRequest, | |
| 192 v8::External::New(this)); | |
| 193 } else if (name->Equals(v8::String::New("GetRenderViewId"))) { | |
| 194 return v8::FunctionTemplate::New(GetRenderViewId); | |
| 195 } else if (name->Equals(v8::String::New("SetIconCommon"))) { | |
| 196 return v8::FunctionTemplate::New(SetIconCommon, | |
| 197 v8::External::New(this)); | |
| 198 } else if (name->Equals(v8::String::New("GetUniqueSubEventName"))) { | |
| 199 return v8::FunctionTemplate::New(GetUniqueSubEventName); | |
| 200 } else if (name->Equals(v8::String::New("GetLocalFileSystem"))) { | |
| 201 return v8::FunctionTemplate::New(GetLocalFileSystem); | |
| 202 } else if (name->Equals(v8::String::New("DecodeJPEG"))) { | |
| 203 return v8::FunctionTemplate::New(DecodeJPEG, v8::External::New(this)); | |
| 204 } else if (name->Equals(v8::String::New("CreateBlob"))) { | |
| 205 return v8::FunctionTemplate::New(CreateBlob, v8::External::New(this)); | |
| 206 } | |
| 207 | |
| 208 return ChromeV8Extension::GetNativeFunction(name); | |
| 209 } | |
| 210 | |
| 211 private: | |
| 212 static v8::Handle<v8::Value> GetExtensionAPIDefinition( | |
| 213 const v8::Arguments& args) { | |
| 214 return v8::String::NewExternal( | |
| 215 new StaticV8ExternalAsciiStringResource( | |
| 216 ResourceBundle::GetSharedInstance().GetRawDataResource( | |
| 217 IDR_EXTENSION_API_JSON))); | |
| 218 } | |
| 219 | |
| 220 static v8::Handle<v8::Value> GetExtensionViews(const v8::Arguments& args) { | |
| 221 if (args.Length() != 2) | |
| 222 return v8::Undefined(); | |
| 223 | |
| 224 if (!args[0]->IsInt32() || !args[1]->IsString()) | |
| 225 return v8::Undefined(); | |
| 226 | |
| 227 // |browser_window_id| == extension_misc::kUnknownWindowId means getting | |
| 228 // views attached to any browser window. | |
| 229 int browser_window_id = args[0]->Int32Value(); | |
| 230 | |
| 231 std::string view_type_string = *v8::String::Utf8Value(args[1]->ToString()); | |
| 232 StringToUpperASCII(&view_type_string); | |
| 233 // |view_type| == content::VIEW_TYPE_INVALID means getting any type of | |
| 234 // views. | |
| 235 content::ViewType view_type = content::VIEW_TYPE_INVALID; | |
| 236 if (view_type_string == chrome::kViewTypeBackgroundPage) { | |
| 237 view_type = chrome::VIEW_TYPE_EXTENSION_BACKGROUND_PAGE; | |
| 238 } else if (view_type_string == chrome::kViewTypeInfobar) { | |
| 239 view_type = chrome::VIEW_TYPE_EXTENSION_INFOBAR; | |
| 240 } else if (view_type_string == chrome::kViewTypeNotification) { | |
| 241 view_type = chrome::VIEW_TYPE_NOTIFICATION; | |
| 242 } else if (view_type_string == chrome::kViewTypeTabContents) { | |
| 243 view_type = content::VIEW_TYPE_TAB_CONTENTS; | |
| 244 } else if (view_type_string == chrome::kViewTypePopup) { | |
| 245 view_type = chrome::VIEW_TYPE_EXTENSION_POPUP; | |
| 246 } else if (view_type_string == chrome::kViewTypeExtensionDialog) { | |
| 247 view_type = chrome::VIEW_TYPE_EXTENSION_DIALOG; | |
| 248 } else if (view_type_string != chrome::kViewTypeAll) { | |
| 249 return v8::Undefined(); | |
| 250 } | |
| 251 | |
| 252 ExtensionImpl* v8_extension = GetFromArguments<ExtensionImpl>(args); | |
| 253 const ::Extension* extension = | |
| 254 v8_extension->GetExtensionForCurrentRenderView(); | |
| 255 if (!extension) | |
| 256 return v8::Undefined(); | |
| 257 | |
| 258 ExtensionViewAccumulator accumulator(extension->id(), browser_window_id, | |
| 259 view_type); | |
| 260 content::RenderView::ForEach(&accumulator); | |
| 261 return accumulator.views(); | |
| 262 } | |
| 263 | |
| 264 static v8::Handle<v8::Value> GetNextRequestId(const v8::Arguments& args) { | |
| 265 static int next_request_id = 0; | |
| 266 return v8::Integer::New(next_request_id++); | |
| 267 } | |
| 268 | |
| 269 // Attach an event name to an object. | |
| 270 static v8::Handle<v8::Value> GetUniqueSubEventName( | |
| 271 const v8::Arguments& args) { | |
| 272 static int next_event_id = 0; | |
| 273 DCHECK(args.Length() == 1); | |
| 274 DCHECK(args[0]->IsString()); | |
| 275 std::string event_name(*v8::String::AsciiValue(args[0])); | |
| 276 std::string unique_event_name = | |
| 277 event_name + "/" + base::IntToString(++next_event_id); | |
| 278 return v8::String::New(unique_event_name.c_str()); | |
| 279 } | |
| 280 | |
| 281 static v8::Handle<v8::Value> GetLocalFileSystem( | |
| 282 const v8::Arguments& args) { | |
| 283 DCHECK(args.Length() == 2); | |
| 284 DCHECK(args[0]->IsString()); | |
| 285 DCHECK(args[1]->IsString()); | |
| 286 std::string name(*v8::String::Utf8Value(args[0])); | |
| 287 std::string path(*v8::String::Utf8Value(args[1])); | |
| 288 | |
| 289 WebFrame* webframe = WebFrame::frameForCurrentContext(); | |
| 290 return webframe->createFileSystem(WebKit::WebFileSystem::TypeExternal, | |
| 291 WebKit::WebString::fromUTF8(name.c_str()), | |
| 292 WebKit::WebString::fromUTF8(path.c_str())); | |
| 293 } | |
| 294 | |
| 295 // Decodes supplied JPEG byte array to image pixel array. | |
| 296 static v8::Handle<v8::Value> DecodeJPEG(const v8::Arguments& args) { | |
| 297 static const char* kAllowedIds[] = { | |
| 298 "haiffjcadagjlijoggckpgfnoeiflnem", | |
| 299 "gnedhmakppccajfpfiihfcdlnpgomkcf", | |
| 300 "fjcibdnjlbfnbfdjneajpipnlcppleek", | |
| 301 "oflbaaikkabfdfkimeclgkackhdkpnip" // Testing extension. | |
| 302 }; | |
| 303 static const std::vector<std::string> allowed_ids( | |
| 304 kAllowedIds, kAllowedIds + arraysize(kAllowedIds)); | |
| 305 | |
| 306 ExtensionImpl* v8_extension = GetFromArguments<ExtensionImpl>(args); | |
| 307 const ::Extension* extension = | |
| 308 v8_extension->GetExtensionForCurrentRenderView(); | |
| 309 if (!extension) | |
| 310 return v8::Undefined(); | |
| 311 if (allowed_ids.end() == std::find( | |
| 312 allowed_ids.begin(), allowed_ids.end(), extension->id())) { | |
| 313 return v8::Undefined(); | |
| 314 } | |
| 315 | |
| 316 DCHECK(args.Length() == 1); | |
| 317 DCHECK(args[0]->IsArray()); | |
| 318 v8::Local<v8::Object> jpeg_array = args[0]->ToObject(); | |
| 319 size_t jpeg_length = | |
| 320 jpeg_array->Get(v8::String::New("length"))->Int32Value(); | |
| 321 | |
| 322 // Put input JPEG array into string for DecodeImage(). | |
| 323 std::string jpeg_array_string; | |
| 324 jpeg_array_string.reserve(jpeg_length); | |
| 325 | |
| 326 // Unfortunately we cannot request continuous backing store of the | |
| 327 // |jpeg_array| object as it might not have one. So we make | |
| 328 // element copy here. | |
| 329 // Note(mnaganov): If it is not fast enough | |
| 330 // (and main constraints might be in repetition of v8 API calls), | |
| 331 // change the argument type from Array to String and use | |
| 332 // String::Write(). | |
| 333 // Note(vitalyr): Another option is to use Int8Array for inputs and | |
| 334 // Int32Array for output. | |
| 335 for (size_t i = 0; i != jpeg_length; ++i) { | |
| 336 jpeg_array_string.push_back( | |
| 337 jpeg_array->Get(v8::Integer::New(i))->Int32Value()); | |
| 338 } | |
| 339 | |
| 340 // Decode and verify resulting image metrics. | |
| 341 SkBitmap bitmap; | |
| 342 if (!webkit_glue::DecodeImage(jpeg_array_string, &bitmap)) | |
| 343 return v8::Undefined(); | |
| 344 if (bitmap.config() != SkBitmap::kARGB_8888_Config) | |
| 345 return v8::Undefined(); | |
| 346 const int width = bitmap.width(); | |
| 347 const int height = bitmap.height(); | |
| 348 SkAutoLockPixels lockpixels(bitmap); | |
| 349 const uint32_t* pixels = static_cast<uint32_t*>(bitmap.getPixels()); | |
| 350 if (!pixels) | |
| 351 return v8::Undefined(); | |
| 352 | |
| 353 // Compose output array. This API call only accepts kARGB_8888_Config images | |
| 354 // so we rely on each pixel occupying 4 bytes. | |
| 355 // Note(mnaganov): to speed this up, you may use backing store | |
| 356 // technique from CreateExternalArray() of v8/src/d8.cc. | |
| 357 v8::Local<v8::Array> bitmap_array(v8::Array::New(width * height)); | |
| 358 for (int i = 0; i != width * height; ++i) { | |
| 359 bitmap_array->Set(v8::Integer::New(i), | |
| 360 v8::Integer::New(pixels[i] & 0xFFFFFF)); | |
| 361 } | |
| 362 return bitmap_array; | |
| 363 } | |
| 364 | |
| 365 // Creates a Blob with the content of the specified file. | |
| 366 static v8::Handle<v8::Value> CreateBlob(const v8::Arguments& args) { | |
| 367 CHECK(args.Length() == 2); | |
| 368 CHECK(args[0]->IsString()); | |
| 369 CHECK(args[1]->IsInt32()); | |
| 370 WebKit::WebString path(UTF8ToUTF16(*v8::String::Utf8Value(args[0]))); | |
| 371 WebKit::WebBlob blob = | |
| 372 WebKit::WebBlob::createFromFile(path, args[1]->Int32Value()); | |
| 373 return blob.toV8Value(); | |
| 374 } | |
| 375 | |
| 376 // Creates a new messaging channel to the tab with the given ID. | |
| 377 static v8::Handle<v8::Value> OpenChannelToTab(const v8::Arguments& args) { | |
| 378 // Get the current RenderView so that we can send a routed IPC message from | |
| 379 // the correct source. | |
| 380 content::RenderView* renderview = GetCurrentRenderView(); | |
| 381 if (!renderview) | |
| 382 return v8::Undefined(); | |
| 383 | |
| 384 if (args.Length() >= 3 && args[0]->IsInt32() && args[1]->IsString() && | |
| 385 args[2]->IsString()) { | |
| 386 int tab_id = args[0]->Int32Value(); | |
| 387 std::string extension_id = *v8::String::Utf8Value(args[1]->ToString()); | |
| 388 std::string channel_name = *v8::String::Utf8Value(args[2]->ToString()); | |
| 389 int port_id = -1; | |
| 390 renderview->Send(new ExtensionHostMsg_OpenChannelToTab( | |
| 391 renderview->GetRoutingId(), tab_id, extension_id, channel_name, | |
| 392 &port_id)); | |
| 393 return v8::Integer::New(port_id); | |
| 394 } | |
| 395 return v8::Undefined(); | |
| 396 } | |
| 397 | |
| 398 static v8::Handle<v8::Value> GetNextContextMenuId(const v8::Arguments& args) { | |
| 399 // Note: this works because contextMenus.create() only works in the | |
| 400 // extension process. If that API is opened up to content scripts, this | |
| 401 // will need to change. See crbug.com/77023 | |
| 402 static int next_context_menu_id = 1; | |
| 403 return v8::Integer::New(next_context_menu_id++); | |
| 404 } | |
| 405 | |
| 406 static v8::Handle<v8::Value> GetNextTtsEventId(const v8::Arguments& args) { | |
| 407 // Note: this works because the TTS API only works in the | |
| 408 // extension process, not content scripts. | |
| 409 static int next_tts_event_id = 1; | |
| 410 return v8::Integer::New(next_tts_event_id++); | |
| 411 } | |
| 412 | |
| 413 static v8::Handle<v8::Value> GetCurrentPageActions( | |
| 414 const v8::Arguments& args) { | |
| 415 ExtensionImpl* v8_extension = GetFromArguments<ExtensionImpl>(args); | |
| 416 std::string extension_id = *v8::String::Utf8Value(args[0]->ToString()); | |
| 417 const ::Extension* extension = | |
| 418 v8_extension->extension_dispatcher_->extensions()->GetByID( | |
| 419 extension_id); | |
| 420 CHECK(!extension_id.empty()); | |
| 421 if (!extension) | |
| 422 return v8::Undefined(); | |
| 423 | |
| 424 v8::Local<v8::Array> page_action_vector = v8::Array::New(); | |
| 425 if (extension->page_action()) { | |
| 426 std::string id = extension->page_action()->id(); | |
| 427 page_action_vector->Set(v8::Integer::New(0), | |
| 428 v8::String::New(id.c_str(), id.size())); | |
| 429 } | |
| 430 | |
| 431 return page_action_vector; | |
| 432 } | |
| 433 | |
| 434 // Common code for starting an API request to the browser. |value_args| | |
| 435 // contains the request's arguments. | |
| 436 // Steals value_args contents for efficiency. | |
| 437 static v8::Handle<v8::Value> StartRequestCommon( | |
| 438 const v8::Arguments& args, ListValue* value_args) { | |
| 439 ExtensionImpl* v8_extension = GetFromArguments<ExtensionImpl>(args); | |
| 440 | |
| 441 const ChromeV8ContextSet& contexts = | |
| 442 v8_extension->extension_dispatcher()->v8_context_set(); | |
| 443 ChromeV8Context* current_context = contexts.GetCurrent(); | |
| 444 if (!current_context) | |
| 445 return v8::Undefined(); | |
| 446 | |
| 447 // Get the current RenderView so that we can send a routed IPC message from | |
| 448 // the correct source. | |
| 449 content::RenderView* renderview = current_context->GetRenderView(); | |
| 450 if (!renderview) | |
| 451 return v8::Undefined(); | |
| 452 | |
| 453 std::string name = *v8::String::AsciiValue(args[0]); | |
| 454 const std::set<std::string>& function_names = | |
| 455 v8_extension->extension_dispatcher_->function_names(); | |
| 456 if (function_names.find(name) == function_names.end()) { | |
| 457 NOTREACHED() << "Unexpected function " << name; | |
| 458 return v8::Undefined(); | |
| 459 } | |
| 460 | |
| 461 // TODO(aa): add this to ChromeV8Context. | |
| 462 if (!v8_extension->CheckPermissionForCurrentRenderView(name)) | |
| 463 return v8::Undefined(); | |
| 464 | |
| 465 GURL source_url; | |
| 466 WebFrame* webframe = current_context->web_frame(); | |
| 467 if (webframe) | |
| 468 source_url = webframe->document().url(); | |
| 469 | |
| 470 int request_id = args[2]->Int32Value(); | |
| 471 bool has_callback = args[3]->BooleanValue(); | |
| 472 bool for_io_thread = args[4]->BooleanValue(); | |
| 473 | |
| 474 v8::Persistent<v8::Context> v8_context = | |
| 475 v8::Persistent<v8::Context>::New(v8::Context::GetCurrent()); | |
| 476 DCHECK(!v8_context.IsEmpty()); | |
| 477 g_pending_requests.Get()[request_id].reset(new PendingRequest( | |
| 478 v8_context, name, current_context->extension_id())); | |
| 479 | |
| 480 ExtensionHostMsg_Request_Params params; | |
| 481 params.name = name; | |
| 482 params.arguments.Swap(value_args); | |
| 483 params.source_url = source_url; | |
| 484 params.request_id = request_id; | |
| 485 params.has_callback = has_callback; | |
| 486 params.user_gesture = | |
| 487 webframe ? webframe->isProcessingUserGesture() : false; | |
| 488 if (for_io_thread) { | |
| 489 renderview->Send(new ExtensionHostMsg_RequestForIOThread( | |
| 490 renderview->GetRoutingId(), params)); | |
| 491 } else { | |
| 492 renderview->Send(new ExtensionHostMsg_Request( | |
| 493 renderview->GetRoutingId(), params)); | |
| 494 } | |
| 495 | |
| 496 return v8::Undefined(); | |
| 497 } | |
| 498 | |
| 499 // Starts an API request to the browser, with an optional callback. The | |
| 500 // callback will be dispatched to EventBindings::HandleResponse. | |
| 501 static v8::Handle<v8::Value> StartRequest(const v8::Arguments& args) { | |
| 502 std::string str_args = *v8::String::Utf8Value(args[1]); | |
| 503 base::JSONReader reader; | |
| 504 scoped_ptr<Value> value_args; | |
| 505 value_args.reset(reader.JsonToValue(str_args, false, false)); | |
| 506 | |
| 507 // Since we do the serialization in the v8 extension, we should always get | |
| 508 // valid JSON. | |
| 509 if (!value_args.get() || !value_args->IsType(Value::TYPE_LIST)) { | |
| 510 NOTREACHED() << "Invalid JSON passed to StartRequest."; | |
| 511 return v8::Undefined(); | |
| 512 } | |
| 513 | |
| 514 return StartRequestCommon(args, static_cast<ListValue*>(value_args.get())); | |
| 515 } | |
| 516 | |
| 517 static bool ConvertImageDataToBitmapValue( | |
| 518 const v8::Arguments& args, Value** bitmap_value) { | |
| 519 v8::Local<v8::Object> extension_args = args[1]->ToObject(); | |
| 520 v8::Local<v8::Object> details = | |
| 521 extension_args->Get(v8::String::New("0"))->ToObject(); | |
| 522 v8::Local<v8::Object> image_data = | |
| 523 details->Get(v8::String::New("imageData"))->ToObject(); | |
| 524 v8::Local<v8::Object> data = | |
| 525 image_data->Get(v8::String::New("data"))->ToObject(); | |
| 526 int width = image_data->Get(v8::String::New("width"))->Int32Value(); | |
| 527 int height = image_data->Get(v8::String::New("height"))->Int32Value(); | |
| 528 | |
| 529 int data_length = data->Get(v8::String::New("length"))->Int32Value(); | |
| 530 if (data_length != 4 * width * height) { | |
| 531 NOTREACHED() << "Invalid argument to setIcon. Expecting ImageData."; | |
| 532 return false; | |
| 533 } | |
| 534 | |
| 535 SkBitmap bitmap; | |
| 536 bitmap.setConfig(SkBitmap::kARGB_8888_Config, width, height); | |
| 537 bitmap.allocPixels(); | |
| 538 bitmap.eraseARGB(0, 0, 0, 0); | |
| 539 | |
| 540 uint32_t* pixels = bitmap.getAddr32(0, 0); | |
| 541 for (int t = 0; t < width*height; t++) { | |
| 542 // |data| is RGBA, pixels is ARGB. | |
| 543 pixels[t] = SkPreMultiplyColor( | |
| 544 ((data->Get(v8::Integer::New(4*t + 3))->Int32Value() & 0xFF) << 24) | | |
| 545 ((data->Get(v8::Integer::New(4*t + 0))->Int32Value() & 0xFF) << 16) | | |
| 546 ((data->Get(v8::Integer::New(4*t + 1))->Int32Value() & 0xFF) << 8) | | |
| 547 ((data->Get(v8::Integer::New(4*t + 2))->Int32Value() & 0xFF) << 0)); | |
| 548 } | |
| 549 | |
| 550 // Construct the Value object. | |
| 551 IPC::Message bitmap_pickle; | |
| 552 IPC::WriteParam(&bitmap_pickle, bitmap); | |
| 553 *bitmap_value = base::BinaryValue::CreateWithCopiedBuffer( | |
| 554 static_cast<const char*>(bitmap_pickle.data()), bitmap_pickle.size()); | |
| 555 | |
| 556 return true; | |
| 557 } | |
| 558 | |
| 559 // A special request for setting the extension action icon and the sidebar | |
| 560 // mini tab icon. This function accepts a canvas ImageData object, so it needs | |
| 561 // to do extra processing before sending the request to the browser. | |
| 562 static v8::Handle<v8::Value> SetIconCommon( | |
| 563 const v8::Arguments& args) { | |
| 564 Value* bitmap_value = NULL; | |
| 565 if (!ConvertImageDataToBitmapValue(args, &bitmap_value)) | |
| 566 return v8::Undefined(); | |
| 567 | |
| 568 v8::Local<v8::Object> extension_args = args[1]->ToObject(); | |
| 569 v8::Local<v8::Object> details = | |
| 570 extension_args->Get(v8::String::New("0"))->ToObject(); | |
| 571 | |
| 572 DictionaryValue* dict = new DictionaryValue(); | |
| 573 dict->Set("imageData", bitmap_value); | |
| 574 | |
| 575 if (details->Has(v8::String::New("tabId"))) { | |
| 576 dict->SetInteger("tabId", | |
| 577 details->Get(v8::String::New("tabId"))->Int32Value()); | |
| 578 } | |
| 579 | |
| 580 ListValue list_value; | |
| 581 list_value.Append(dict); | |
| 582 | |
| 583 return StartRequestCommon(args, &list_value); | |
| 584 } | |
| 585 | |
| 586 static v8::Handle<v8::Value> GetRenderViewId(const v8::Arguments& args) { | |
| 587 content::RenderView* renderview = GetCurrentRenderView(); | |
| 588 if (!renderview) | |
| 589 return v8::Undefined(); | |
| 590 return v8::Integer::New(renderview->GetRoutingId()); | |
| 591 } | |
| 592 }; | |
| 593 | |
| 594 } // namespace | |
| 595 | |
| 596 v8::Extension* ExtensionProcessBindings::Get( | |
| 597 ExtensionDispatcher* extension_dispatcher) { | |
| 598 static v8::Extension* extension = new ExtensionImpl(extension_dispatcher); | |
| 599 CHECK_EQ(extension_dispatcher, | |
| 600 static_cast<ExtensionImpl*>(extension)->extension_dispatcher()); | |
| 601 return extension; | |
| 602 } | |
| 603 | |
| 604 // static | |
| 605 void ExtensionProcessBindings::HandleResponse( | |
| 606 const ChromeV8ContextSet& contexts, | |
| 607 int request_id, | |
| 608 bool success, | |
| 609 const std::string& response, | |
| 610 const std::string& error, | |
| 611 std::string* extension_id) { | |
| 612 PendingRequestMap::iterator request = | |
| 613 g_pending_requests.Get().find(request_id); | |
| 614 if (request == g_pending_requests.Get().end()) { | |
| 615 // This should not be able to happen since we only remove requests when they | |
| 616 // are handled. | |
| 617 LOG(ERROR) << "Could not find specified request id: " << request_id; | |
| 618 return; | |
| 619 } | |
| 620 | |
| 621 ChromeV8Context* v8_context = | |
| 622 contexts.GetByV8Context(request->second->context); | |
| 623 if (!v8_context) | |
| 624 return; // The frame went away. | |
| 625 | |
| 626 v8::HandleScope handle_scope; | |
| 627 v8::Handle<v8::Value> argv[5]; | |
| 628 argv[0] = v8::Integer::New(request_id); | |
| 629 argv[1] = v8::String::New(request->second->name.c_str()); | |
| 630 argv[2] = v8::Boolean::New(success); | |
| 631 argv[3] = v8::String::New(response.c_str()); | |
| 632 argv[4] = v8::String::New(error.c_str()); | |
| 633 | |
| 634 v8::Handle<v8::Value> retval; | |
| 635 CHECK(v8_context->CallChromeHiddenMethod("handleResponse", | |
| 636 arraysize(argv), | |
| 637 argv, | |
| 638 &retval)); | |
| 639 // In debug, the js will validate the callback parameters and return a | |
| 640 // string if a validation error has occured. | |
| 641 #ifndef NDEBUG | |
| 642 if (!retval.IsEmpty() && !retval->IsUndefined()) { | |
| 643 std::string error = *v8::String::AsciiValue(retval); | |
| 644 DCHECK(false) << error; | |
| 645 } | |
| 646 #endif | |
| 647 | |
| 648 // Save the extension id before erasing the request. | |
| 649 *extension_id = request->second->extension_id; | |
| 650 | |
| 651 request->second->context.Dispose(); | |
| 652 request->second->context.Clear(); | |
| 653 g_pending_requests.Get().erase(request); | |
| 654 } | |
| 655 | |
| 656 // static | |
| 657 bool ExtensionProcessBindings::HasPendingRequests( | |
| 658 const std::string& extension_id) { | |
| 659 for (PendingRequestMap::const_iterator it = g_pending_requests.Get().begin(); | |
| 660 it != g_pending_requests.Get().end(); ++it) { | |
| 661 if (it->second->extension_id == extension_id) | |
| 662 return true; | |
| 663 } | |
| 664 return false; | |
| 665 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 8540012:
Enable extension APIs for content scripts. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src