1 /* 2 * Copyright (C) 2004, 2006 Apple Computer, Inc. All rights reserved. 3 * Copyright (C) 2007, 2008, 2009 Google, Inc. All rights reserved. 4 * Copyright (C) 2014 Opera Software ASA. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 23 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include "config.h" 29 #include "bindings/core/v8/NPV8Object.h" 30 31 #include "bindings/core/v8/ScriptController.h" 32 #include "bindings/core/v8/ScriptSourceCode.h" 33 #include "bindings/core/v8/V8Binding.h" 34 #include "bindings/core/v8/V8GCController.h" 35 #include "bindings/core/v8/V8NPUtils.h" 36 #include "bindings/core/v8/V8ObjectConstructor.h" 37 #include "bindings/core/v8/V8ScriptRunner.h" 38 #include "bindings/core/v8/WrapperTypeInfo.h" 39 #include "bindings/core/v8/npruntime_impl.h" 40 #include "bindings/core/v8/npruntime_priv.h" 41 #include "core/frame/LocalDOMWindow.h" 42 #include "core/frame/LocalFrame.h" 43 #include "platform/UserGestureIndicator.h" 44 #include "wtf/OwnPtr.h" 45 #include "wtf/StringExtras.h" 46 #include "wtf/text/WTFString.h" 47 #include <stdio.h> 48 49 using namespace blink; 50 51 namespace { 52 53 WrapperPersistentNode* createPersistentHandle(ScriptWrappableBase* internalPointer) 54 { 55 ASSERT_NOT_REACHED(); 56 return 0; 57 } 58 59 } // namespace 60 61 namespace blink { 62 63 const WrapperTypeInfo* npObjectTypeInfo() 64 { 65 static const WrapperTypeInfo typeInfo = { gin::kEmbedderBlink, 0, 0, 0, createPersistentHandle, 0, 0, 0, 0, 0, 0, WrapperTypeInfo::WrapperTypeObjectPrototype, WrapperTypeInfo::ObjectClassId, WrapperTypeInfo::Dependent, WrapperTypeInfo::RefCountedObject }; 66 return &typeInfo; 67 } 68 69 // FIXME: Comments on why use malloc and free. 70 static NPObject* allocV8NPObject(NPP, NPClass*) 71 { 72 return static_cast<NPObject*>(malloc(sizeof(V8NPObject))); 73 } 74 75 static void freeV8NPObject(NPObject* npObject) 76 { 77 V8NPObject* v8NpObject = reinterpret_cast<V8NPObject*>(npObject); 78 disposeUnderlyingV8Object(npObject, v8::Isolate::GetCurrent()); 79 free(v8NpObject); 80 } 81 82 static NPClass V8NPObjectClass = { 83 NP_CLASS_STRUCT_VERSION, 84 allocV8NPObject, 85 freeV8NPObject, 86 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 87 }; 88 89 static ScriptState* mainWorldScriptState(v8::Isolate* isolate, NPP npp, NPObject* npObject) 90 { 91 ASSERT(npObject->_class == &V8NPObjectClass); 92 V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject); 93 LocalDOMWindow* window = object->rootObject; 94 if (!window || !window->isCurrentlyDisplayedInFrame()) 95 return 0; 96 v8::HandleScope handleScope(isolate); 97 v8::Handle<v8::Context> context = toV8Context(object->rootObject->frame(), DOMWrapperWorld::mainWorld()); 98 return ScriptState::from(context); 99 } 100 101 static PassOwnPtr<v8::Handle<v8::Value>[]> createValueListFromVariantArgs(const NPVariant* arguments, uint32_t argumentCount, NPObject* owner, v8::Isolate* isolate) 102 { 103 OwnPtr<v8::Handle<v8::Value>[]> argv = adoptArrayPtr(new v8::Handle<v8::Value>[argumentCount]); 104 for (uint32_t index = 0; index < argumentCount; index++) { 105 const NPVariant* arg = &arguments[index]; 106 argv[index] = convertNPVariantToV8Object(arg, owner, isolate); 107 } 108 return argv.release(); 109 } 110 111 // Create an identifier (null terminated utf8 char*) from the NPIdentifier. 112 static v8::Local<v8::String> npIdentifierToV8Identifier(NPIdentifier name, v8::Isolate* isolate) 113 { 114 PrivateIdentifier* identifier = static_cast<PrivateIdentifier*>(name); 115 if (identifier->isString) 116 return v8AtomicString(isolate, static_cast<const char*>(identifier->value.string)); 117 118 char buffer[32]; 119 snprintf(buffer, sizeof(buffer), "%d", identifier->value.number); 120 return v8AtomicString(isolate, buffer); 121 } 122 123 NPObject* v8ObjectToNPObject(v8::Handle<v8::Object> object) 124 { 125 return reinterpret_cast<NPObject*>(toScriptWrappableBase(object)); 126 } 127 128 bool isWrappedNPObject(v8::Handle<v8::Object> object) 129 { 130 if (object->InternalFieldCount() == npObjectInternalFieldCount) { 131 const WrapperTypeInfo* typeInfo = static_cast<const WrapperTypeInfo*>(object->GetAlignedPointerFromInternalField(v8DOMWrapperTypeIndex)); 132 return typeInfo == npObjectTypeInfo(); 133 } 134 return false; 135 } 136 137 NPObject* npCreateV8ScriptObject(NPP npp, v8::Handle<v8::Object> object, LocalDOMWindow* root, v8::Isolate* isolate) 138 { 139 // Check to see if this object is already wrapped. 140 if (isWrappedNPObject(object)) { 141 NPObject* returnValue = v8ObjectToNPObject(object); 142 _NPN_RetainObject(returnValue); 143 return returnValue; 144 } 145 146 V8NPObjectVector* objectVector = 0; 147 if (V8PerContextData* perContextData = V8PerContextData::from(object->CreationContext())) { 148 int v8ObjectHash = object->GetIdentityHash(); 149 ASSERT(v8ObjectHash); 150 V8NPObjectMap* v8NPObjectMap = perContextData->v8NPObjectMap(); 151 V8NPObjectMap::iterator iter = v8NPObjectMap->find(v8ObjectHash); 152 if (iter != v8NPObjectMap->end()) { 153 V8NPObjectVector& objects = iter->value; 154 for (size_t index = 0; index < objects.size(); ++index) { 155 V8NPObject* v8npObject = objects.at(index); 156 if (v8npObject->v8Object == object && v8npObject->rootObject == root) { 157 _NPN_RetainObject(&v8npObject->object); 158 return reinterpret_cast<NPObject*>(v8npObject); 159 } 160 } 161 objectVector = &iter->value; 162 } else { 163 objectVector = &v8NPObjectMap->set(v8ObjectHash, V8NPObjectVector()).storedValue->value; 164 } 165 } 166 167 V8NPObject* v8npObject = reinterpret_cast<V8NPObject*>(_NPN_CreateObject(npp, &V8NPObjectClass)); 168 // This is uninitialized memory, we need to clear it so that 169 // Persistent::Reset won't try to Dispose anything bogus. 170 new (&v8npObject->v8Object) v8::Persistent<v8::Object>(); 171 v8npObject->v8Object.Reset(isolate, object); 172 v8npObject->rootObject = root; 173 174 if (objectVector) 175 objectVector->append(v8npObject); 176 177 return reinterpret_cast<NPObject*>(v8npObject); 178 } 179 180 V8NPObject* npObjectToV8NPObject(NPObject* npObject) 181 { 182 if (npObject->_class != &V8NPObjectClass) 183 return 0; 184 V8NPObject* v8NpObject = reinterpret_cast<V8NPObject*>(npObject); 185 if (v8NpObject->v8Object.IsEmpty()) 186 return 0; 187 return v8NpObject; 188 } 189 190 ScriptWrappableBase* npObjectToScriptWrappableBase(NPObject* npObject) 191 { 192 return reinterpret_cast<ScriptWrappableBase*>(npObject); 193 } 194 195 void disposeUnderlyingV8Object(NPObject* npObject, v8::Isolate* isolate) 196 { 197 ASSERT(npObject); 198 V8NPObject* v8NpObject = npObjectToV8NPObject(npObject); 199 if (!v8NpObject) 200 return; 201 v8::HandleScope scope(isolate); 202 v8::Handle<v8::Object> v8Object = v8::Local<v8::Object>::New(isolate, v8NpObject->v8Object); 203 ASSERT(!v8Object->CreationContext().IsEmpty()); 204 if (V8PerContextData* perContextData = V8PerContextData::from(v8Object->CreationContext())) { 205 V8NPObjectMap* v8NPObjectMap = perContextData->v8NPObjectMap(); 206 int v8ObjectHash = v8Object->GetIdentityHash(); 207 ASSERT(v8ObjectHash); 208 V8NPObjectMap::iterator iter = v8NPObjectMap->find(v8ObjectHash); 209 if (iter != v8NPObjectMap->end()) { 210 V8NPObjectVector& objects = iter->value; 211 for (size_t index = 0; index < objects.size(); ++index) { 212 if (objects.at(index) == v8NpObject) { 213 objects.remove(index); 214 break; 215 } 216 } 217 if (objects.isEmpty()) 218 v8NPObjectMap->remove(v8ObjectHash); 219 } 220 } 221 v8NpObject->v8Object.Reset(); 222 v8NpObject->rootObject = 0; 223 } 224 225 } // namespace blink 226 227 bool _NPN_Invoke(NPP npp, NPObject* npObject, NPIdentifier methodName, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result) 228 { 229 ScriptForbiddenScope::AllowSuperUnsafeScript thisShouldBeRemoved; 230 231 if (!npObject) 232 return false; 233 234 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 235 236 V8NPObject* v8NpObject = npObjectToV8NPObject(npObject); 237 if (!v8NpObject) { 238 if (npObject->_class->invoke) 239 return npObject->_class->invoke(npObject, methodName, arguments, argumentCount, result); 240 241 VOID_TO_NPVARIANT(*result); 242 return true; 243 } 244 245 PrivateIdentifier* identifier = static_cast<PrivateIdentifier*>(methodName); 246 if (!identifier->isString) 247 return false; 248 249 if (!strcmp(identifier->value.string, "eval")) { 250 if (argumentCount != 1) 251 return false; 252 if (arguments[0].type != NPVariantType_String) 253 return false; 254 return _NPN_Evaluate(npp, npObject, const_cast<NPString*>(&arguments[0].value.stringValue), result); 255 } 256 257 // FIXME: should use the plugin's owner frame as the security context. 258 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 259 if (!scriptState) 260 return false; 261 262 ScriptState::Scope scope(scriptState); 263 ExceptionCatcher exceptionCatcher; 264 265 v8::Handle<v8::Object> v8Object = v8::Local<v8::Object>::New(isolate, v8NpObject->v8Object); 266 v8::Handle<v8::Value> functionObject = v8Object->Get(v8AtomicString(isolate, identifier->value.string)); 267 if (functionObject.IsEmpty() || functionObject->IsNull()) { 268 NULL_TO_NPVARIANT(*result); 269 return false; 270 } 271 if (functionObject->IsUndefined()) { 272 VOID_TO_NPVARIANT(*result); 273 return false; 274 } 275 276 LocalFrame* frame = v8NpObject->rootObject->frame(); 277 ASSERT(frame); 278 279 // Call the function object. 280 v8::Handle<v8::Function> function = v8::Handle<v8::Function>::Cast(functionObject); 281 OwnPtr<v8::Handle<v8::Value>[]> argv = createValueListFromVariantArgs(arguments, argumentCount, npObject, isolate); 282 v8::Local<v8::Value> resultObject = frame->script().callFunction(function, v8Object, argumentCount, argv.get()); 283 284 // If we had an error, return false. The spec is a little unclear here, but says "Returns true if the method was 285 // successfully invoked". If we get an error return value, was that successfully invoked? 286 if (resultObject.IsEmpty()) 287 return false; 288 289 convertV8ObjectToNPVariant(resultObject, npObject, result, isolate); 290 return true; 291 } 292 293 // FIXME: Fix it same as _NPN_Invoke (HandleScope and such). 294 bool _NPN_InvokeDefault(NPP npp, NPObject* npObject, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result) 295 { 296 ScriptForbiddenScope::AllowSuperUnsafeScript thisShouldBeRemoved; 297 298 if (!npObject) 299 return false; 300 301 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 302 303 V8NPObject* v8NpObject = npObjectToV8NPObject(npObject); 304 if (!v8NpObject) { 305 if (npObject->_class->invokeDefault) 306 return npObject->_class->invokeDefault(npObject, arguments, argumentCount, result); 307 308 VOID_TO_NPVARIANT(*result); 309 return true; 310 } 311 312 VOID_TO_NPVARIANT(*result); 313 314 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 315 if (!scriptState) 316 return false; 317 318 ScriptState::Scope scope(scriptState); 319 ExceptionCatcher exceptionCatcher; 320 321 // Lookup the function object and call it. 322 v8::Local<v8::Object> functionObject = v8::Local<v8::Object>::New(isolate, v8NpObject->v8Object); 323 if (!functionObject->IsFunction()) 324 return false; 325 326 v8::Local<v8::Value> resultObject; 327 v8::Handle<v8::Function> function = v8::Local<v8::Function>::Cast(functionObject); 328 if (!function->IsNull()) { 329 LocalFrame* frame = v8NpObject->rootObject->frame(); 330 ASSERT(frame); 331 332 OwnPtr<v8::Handle<v8::Value>[]> argv = createValueListFromVariantArgs(arguments, argumentCount, npObject, isolate); 333 resultObject = frame->script().callFunction(function, functionObject, argumentCount, argv.get()); 334 } 335 // If we had an error, return false. The spec is a little unclear here, but says "Returns true if the method was 336 // successfully invoked". If we get an error return value, was that successfully invoked? 337 if (resultObject.IsEmpty()) 338 return false; 339 340 convertV8ObjectToNPVariant(resultObject, npObject, result, isolate); 341 return true; 342 } 343 344 bool _NPN_Evaluate(NPP npp, NPObject* npObject, NPString* npScript, NPVariant* result) 345 { 346 // FIXME: Give the embedder a way to control this. 347 bool popupsAllowed = false; 348 return _NPN_EvaluateHelper(npp, popupsAllowed, npObject, npScript, result); 349 } 350 351 bool _NPN_EvaluateHelper(NPP npp, bool popupsAllowed, NPObject* npObject, NPString* npScript, NPVariant* result) 352 { 353 ScriptForbiddenScope::AllowSuperUnsafeScript thisShouldBeRemoved; 354 355 VOID_TO_NPVARIANT(*result); 356 if (!npObject) 357 return false; 358 359 V8NPObject* v8NpObject = npObjectToV8NPObject(npObject); 360 if (!v8NpObject) 361 return false; 362 363 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 364 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 365 if (!scriptState) 366 return false; 367 368 ScriptState::Scope scope(scriptState); 369 ExceptionCatcher exceptionCatcher; 370 371 // FIXME: Is this branch still needed after switching to using UserGestureIndicator? 372 String filename; 373 if (!popupsAllowed) 374 filename = "npscript"; 375 376 LocalFrame* frame = v8NpObject->rootObject->frame(); 377 ASSERT(frame); 378 379 String script = String::fromUTF8(npScript->UTF8Characters, npScript->UTF8Length); 380 381 UserGestureIndicator gestureIndicator(popupsAllowed ? DefinitelyProcessingNewUserGesture : PossiblyProcessingUserGesture); 382 v8::Local<v8::Value> v8result = frame->script().executeScriptAndReturnValue(scriptState->context(), ScriptSourceCode(script, KURL(ParsedURLString, filename))); 383 384 if (v8result.IsEmpty()) 385 return false; 386 387 if (_NPN_IsAlive(npObject)) 388 convertV8ObjectToNPVariant(v8result, npObject, result, isolate); 389 return true; 390 } 391 392 bool _NPN_GetProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName, NPVariant* result) 393 { 394 if (!npObject) 395 return false; 396 397 if (V8NPObject* object = npObjectToV8NPObject(npObject)) { 398 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 399 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 400 if (!scriptState) 401 return false; 402 403 ScriptState::Scope scope(scriptState); 404 ExceptionCatcher exceptionCatcher; 405 406 v8::Handle<v8::Object> obj = v8::Local<v8::Object>::New(isolate, object->v8Object); 407 v8::Local<v8::Value> v8result = obj->Get(npIdentifierToV8Identifier(propertyName, isolate)); 408 409 if (v8result.IsEmpty()) 410 return false; 411 412 convertV8ObjectToNPVariant(v8result, npObject, result, isolate); 413 return true; 414 } 415 416 if (npObject->_class->hasProperty && npObject->_class->getProperty) { 417 if (npObject->_class->hasProperty(npObject, propertyName)) 418 return npObject->_class->getProperty(npObject, propertyName, result); 419 } 420 421 VOID_TO_NPVARIANT(*result); 422 return false; 423 } 424 425 bool _NPN_SetProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName, const NPVariant* value) 426 { 427 if (!npObject) 428 return false; 429 430 if (V8NPObject* object = npObjectToV8NPObject(npObject)) { 431 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 432 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 433 if (!scriptState) 434 return false; 435 436 ScriptState::Scope scope(scriptState); 437 ExceptionCatcher exceptionCatcher; 438 439 v8::Handle<v8::Object> obj = v8::Local<v8::Object>::New(isolate, object->v8Object); 440 obj->Set(npIdentifierToV8Identifier(propertyName, isolate), convertNPVariantToV8Object(value, object->rootObject->frame()->script().windowScriptNPObject(), isolate)); 441 return true; 442 } 443 444 if (npObject->_class->setProperty) 445 return npObject->_class->setProperty(npObject, propertyName, value); 446 447 return false; 448 } 449 450 bool _NPN_RemoveProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName) 451 { 452 if (!npObject) 453 return false; 454 455 V8NPObject* object = npObjectToV8NPObject(npObject); 456 if (!object) 457 return false; 458 459 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 460 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 461 if (!scriptState) 462 return false; 463 ScriptState::Scope scope(scriptState); 464 ExceptionCatcher exceptionCatcher; 465 466 v8::Handle<v8::Object> obj = v8::Local<v8::Object>::New(isolate, object->v8Object); 467 // FIXME: Verify that setting to undefined is right. 468 obj->Set(npIdentifierToV8Identifier(propertyName, isolate), v8::Undefined(isolate)); 469 return true; 470 } 471 472 bool _NPN_HasProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName) 473 { 474 if (!npObject) 475 return false; 476 477 if (V8NPObject* object = npObjectToV8NPObject(npObject)) { 478 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 479 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 480 if (!scriptState) 481 return false; 482 ScriptState::Scope scope(scriptState); 483 ExceptionCatcher exceptionCatcher; 484 485 v8::Handle<v8::Object> obj = v8::Local<v8::Object>::New(isolate, object->v8Object); 486 return obj->Has(npIdentifierToV8Identifier(propertyName, isolate)); 487 } 488 489 if (npObject->_class->hasProperty) 490 return npObject->_class->hasProperty(npObject, propertyName); 491 return false; 492 } 493 494 bool _NPN_HasMethod(NPP npp, NPObject* npObject, NPIdentifier methodName) 495 { 496 if (!npObject) 497 return false; 498 499 if (V8NPObject* object = npObjectToV8NPObject(npObject)) { 500 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 501 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 502 if (!scriptState) 503 return false; 504 ScriptState::Scope scope(scriptState); 505 ExceptionCatcher exceptionCatcher; 506 507 v8::Handle<v8::Object> obj = v8::Local<v8::Object>::New(isolate, object->v8Object); 508 v8::Handle<v8::Value> prop = obj->Get(npIdentifierToV8Identifier(methodName, isolate)); 509 return prop->IsFunction(); 510 } 511 512 if (npObject->_class->hasMethod) 513 return npObject->_class->hasMethod(npObject, methodName); 514 return false; 515 } 516 517 void _NPN_SetException(NPObject* npObject, const NPUTF8 *message) 518 { 519 if (!npObject || !npObjectToV8NPObject(npObject)) { 520 // We won't be able to find a proper scope for this exception, so just throw it. 521 // This is consistent with JSC, which throws a global exception all the time. 522 V8ThrowException::throwGeneralError(message, v8::Isolate::GetCurrent()); 523 return; 524 } 525 526 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 527 ScriptState* scriptState = mainWorldScriptState(isolate, 0, npObject); 528 if (!scriptState) 529 return; 530 531 ScriptState::Scope scope(scriptState); 532 ExceptionCatcher exceptionCatcher; 533 534 V8ThrowException::throwGeneralError(message, isolate); 535 } 536 537 bool _NPN_Enumerate(NPP npp, NPObject* npObject, NPIdentifier** identifier, uint32_t* count) 538 { 539 if (!npObject) 540 return false; 541 542 if (V8NPObject* object = npObjectToV8NPObject(npObject)) { 543 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 544 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 545 if (!scriptState) 546 return false; 547 ScriptState::Scope scope(scriptState); 548 ExceptionCatcher exceptionCatcher; 549 550 v8::Handle<v8::Object> obj = v8::Local<v8::Object>::New(isolate, object->v8Object); 551 552 // FIXME: http://b/issue?id=1210340: Use a v8::Object::Keys() method when it exists, instead of evaluating javascript. 553 554 // FIXME: Figure out how to cache this helper function. Run a helper function that collects the properties 555 // on the object into an array. 556 const char enumeratorCode[] = 557 "(function (obj) {" 558 " var props = [];" 559 " for (var prop in obj) {" 560 " props[props.length] = prop;" 561 " }" 562 " return props;" 563 "});"; 564 v8::Handle<v8::String> source = v8AtomicString(isolate, enumeratorCode); 565 v8::Handle<v8::Value> result = V8ScriptRunner::compileAndRunInternalScript(source, isolate); 566 ASSERT(!result.IsEmpty()); 567 ASSERT(result->IsFunction()); 568 v8::Handle<v8::Function> enumerator = v8::Handle<v8::Function>::Cast(result); 569 v8::Handle<v8::Value> argv[] = { obj }; 570 v8::Local<v8::Value> propsObj = V8ScriptRunner::callInternalFunction(enumerator, v8::Handle<v8::Object>::Cast(result), WTF_ARRAY_LENGTH(argv), argv, isolate); 571 if (propsObj.IsEmpty()) 572 return false; 573 574 // Convert the results into an array of NPIdentifiers. 575 v8::Handle<v8::Array> props = v8::Handle<v8::Array>::Cast(propsObj); 576 *count = props->Length(); 577 *identifier = static_cast<NPIdentifier*>(calloc(*count, sizeof(NPIdentifier))); 578 for (uint32_t i = 0; i < *count; ++i) { 579 v8::Local<v8::Value> name = props->Get(v8::Integer::New(isolate, i)); 580 (*identifier)[i] = getStringIdentifier(v8::Local<v8::String>::Cast(name)); 581 } 582 return true; 583 } 584 585 if (NP_CLASS_STRUCT_VERSION_HAS_ENUM(npObject->_class) && npObject->_class->enumerate) 586 return npObject->_class->enumerate(npObject, identifier, count); 587 588 return false; 589 } 590 591 bool _NPN_Construct(NPP npp, NPObject* npObject, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result) 592 { 593 if (!npObject) 594 return false; 595 596 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 597 598 if (V8NPObject* object = npObjectToV8NPObject(npObject)) { 599 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 600 if (!scriptState) 601 return false; 602 ScriptState::Scope scope(scriptState); 603 ExceptionCatcher exceptionCatcher; 604 605 // Lookup the constructor function. 606 v8::Handle<v8::Object> ctorObj = v8::Local<v8::Object>::New(isolate, object->v8Object); 607 if (!ctorObj->IsFunction()) 608 return false; 609 610 // Call the constructor. 611 v8::Local<v8::Value> resultObject; 612 v8::Handle<v8::Function> ctor = v8::Handle<v8::Function>::Cast(ctorObj); 613 if (!ctor->IsNull()) { 614 LocalFrame* frame = object->rootObject->frame(); 615 ASSERT(frame); 616 OwnPtr<v8::Handle<v8::Value>[]> argv = createValueListFromVariantArgs(arguments, argumentCount, npObject, isolate); 617 resultObject = V8ObjectConstructor::newInstanceInDocument(isolate, ctor, argumentCount, argv.get(), frame ? frame->document() : 0); 618 } 619 620 if (resultObject.IsEmpty()) 621 return false; 622 623 convertV8ObjectToNPVariant(resultObject, npObject, result, isolate); 624 return true; 625 } 626 627 if (NP_CLASS_STRUCT_VERSION_HAS_CTOR(npObject->_class) && npObject->_class->construct) 628 return npObject->_class->construct(npObject, arguments, argumentCount, result); 629 630 return false; 631 } 632
