1 /* 2 * Copyright (C) 2004, 2006 Apple Computer, Inc. All rights reserved. 3 * Copyright (C) 2007, 2008, 2009 Google, Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include "config.h" 28 29 #include "NPV8Object.h" 30 31 #include "PlatformBridge.h" 32 #include "DOMWindow.h" 33 #include "Frame.h" 34 #include "OwnArrayPtr.h" 35 #include "PlatformString.h" 36 #include "ScriptController.h" 37 #include "UserGestureIndicator.h" 38 #include "V8GCController.h" 39 #include "V8Helpers.h" 40 #include "V8NPUtils.h" 41 #include "V8Proxy.h" 42 #include "WrapperTypeInfo.h" 43 #include "npruntime_impl.h" 44 #include "npruntime_priv.h" 45 46 #if PLATFORM(CHROMIUM) 47 #include <bindings/npruntime.h> 48 #else 49 #include "npruntime.h" 50 #endif 51 52 #include <stdio.h> 53 #include <wtf/StringExtras.h> 54 55 using namespace WebCore; 56 57 namespace WebCore { 58 59 WrapperTypeInfo* npObjectTypeInfo() 60 { 61 static WrapperTypeInfo typeInfo = { 0, 0, 0, 0 }; 62 return &typeInfo; 63 } 64 65 // FIXME: Comments on why use malloc and free. 66 static NPObject* allocV8NPObject(NPP, NPClass*) 67 { 68 return static_cast<NPObject*>(malloc(sizeof(V8NPObject))); 69 } 70 71 static void freeV8NPObject(NPObject* npObject) 72 { 73 V8NPObject* v8NpObject = reinterpret_cast<V8NPObject*>(npObject); 74 #ifndef NDEBUG 75 V8GCController::unregisterGlobalHandle(v8NpObject, v8NpObject->v8Object); 76 #endif 77 v8NpObject->v8Object.Dispose(); 78 free(v8NpObject); 79 } 80 81 static PassOwnArrayPtr<v8::Handle<v8::Value> > createValueListFromVariantArgs(const NPVariant* arguments, uint32_t argumentCount, NPObject* owner) 82 { 83 OwnArrayPtr<v8::Handle<v8::Value> > argv = adoptArrayPtr(new v8::Handle<v8::Value>[argumentCount]); 84 for (uint32_t index = 0; index < argumentCount; index++) { 85 const NPVariant* arg = &arguments[index]; 86 argv[index] = convertNPVariantToV8Object(arg, owner); 87 } 88 return argv.release(); 89 } 90 91 // Create an identifier (null terminated utf8 char*) from the NPIdentifier. 92 static v8::Local<v8::String> npIdentifierToV8Identifier(NPIdentifier name) 93 { 94 PrivateIdentifier* identifier = static_cast<PrivateIdentifier*>(name); 95 if (identifier->isString) 96 return v8::String::New(static_cast<const char*>(identifier->value.string)); 97 98 char buffer[32]; 99 snprintf(buffer, sizeof(buffer), "%d", identifier->value.number); 100 return v8::String::New(buffer); 101 } 102 103 NPObject* v8ObjectToNPObject(v8::Handle<v8::Object> object) 104 { 105 return reinterpret_cast<NPObject*>(object->GetPointerFromInternalField(v8DOMWrapperObjectIndex)); 106 } 107 108 static NPClass V8NPObjectClass = { NP_CLASS_STRUCT_VERSION, 109 allocV8NPObject, 110 freeV8NPObject, 111 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; 112 113 // NPAPI's npruntime functions. 114 NPClass* npScriptObjectClass = &V8NPObjectClass; 115 116 NPObject* npCreateV8ScriptObject(NPP npp, v8::Handle<v8::Object> object, DOMWindow* root) 117 { 118 // Check to see if this object is already wrapped. 119 if (object->InternalFieldCount() == npObjectInternalFieldCount) { 120 WrapperTypeInfo* typeInfo = static_cast<WrapperTypeInfo*>(object->GetPointerFromInternalField(v8DOMWrapperTypeIndex)); 121 if (typeInfo == npObjectTypeInfo()) { 122 123 NPObject* returnValue = v8ObjectToNPObject(object); 124 _NPN_RetainObject(returnValue); 125 return returnValue; 126 } 127 } 128 129 V8NPObject* v8npObject = reinterpret_cast<V8NPObject*>(_NPN_CreateObject(npp, &V8NPObjectClass)); 130 v8npObject->v8Object = v8::Persistent<v8::Object>::New(object); 131 #ifndef NDEBUG 132 V8GCController::registerGlobalHandle(NPOBJECT, v8npObject, v8npObject->v8Object); 133 #endif 134 v8npObject->rootObject = root; 135 return reinterpret_cast<NPObject*>(v8npObject); 136 } 137 138 } // namespace WebCore 139 140 bool _NPN_Invoke(NPP npp, NPObject* npObject, NPIdentifier methodName, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result) 141 { 142 if (!npObject) 143 return false; 144 145 if (npObject->_class != npScriptObjectClass) { 146 if (npObject->_class->invoke) 147 return npObject->_class->invoke(npObject, methodName, arguments, argumentCount, result); 148 149 VOID_TO_NPVARIANT(*result); 150 return true; 151 } 152 153 V8NPObject* v8NpObject = reinterpret_cast<V8NPObject*>(npObject); 154 155 PrivateIdentifier* identifier = static_cast<PrivateIdentifier*>(methodName); 156 if (!identifier->isString) 157 return false; 158 159 if (!strcmp(identifier->value.string, "eval")) { 160 if (argumentCount != 1) 161 return false; 162 if (arguments[0].type != NPVariantType_String) 163 return false; 164 return _NPN_Evaluate(npp, npObject, const_cast<NPString*>(&arguments[0].value.stringValue), result); 165 } 166 167 v8::HandleScope handleScope; 168 // FIXME: should use the plugin's owner frame as the security context. 169 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 170 if (context.IsEmpty()) 171 return false; 172 173 v8::Context::Scope scope(context); 174 ExceptionCatcher exceptionCatcher; 175 176 v8::Handle<v8::Value> functionObject = v8NpObject->v8Object->Get(v8::String::New(identifier->value.string)); 177 if (functionObject.IsEmpty() || functionObject->IsNull()) { 178 NULL_TO_NPVARIANT(*result); 179 return false; 180 } 181 if (functionObject->IsUndefined()) { 182 VOID_TO_NPVARIANT(*result); 183 return false; 184 } 185 186 V8Proxy* proxy = toV8Proxy(npObject); 187 ASSERT(proxy); 188 189 // Call the function object. 190 v8::Handle<v8::Function> function = v8::Handle<v8::Function>::Cast(functionObject); 191 OwnArrayPtr<v8::Handle<v8::Value> > argv = createValueListFromVariantArgs(arguments, argumentCount, npObject); 192 v8::Local<v8::Value> resultObject = proxy->callFunction(function, v8NpObject->v8Object, argumentCount, argv.get()); 193 194 // If we had an error, return false. The spec is a little unclear here, but says "Returns true if the method was 195 // successfully invoked". If we get an error return value, was that successfully invoked? 196 if (resultObject.IsEmpty()) 197 return false; 198 199 convertV8ObjectToNPVariant(resultObject, npObject, result); 200 return true; 201 } 202 203 // FIXME: Fix it same as _NPN_Invoke (HandleScope and such). 204 bool _NPN_InvokeDefault(NPP npp, NPObject* npObject, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result) 205 { 206 if (!npObject) 207 return false; 208 209 if (npObject->_class != npScriptObjectClass) { 210 if (npObject->_class->invokeDefault) 211 return npObject->_class->invokeDefault(npObject, arguments, argumentCount, result); 212 213 VOID_TO_NPVARIANT(*result); 214 return true; 215 } 216 217 V8NPObject* v8NpObject = reinterpret_cast<V8NPObject*>(npObject); 218 219 VOID_TO_NPVARIANT(*result); 220 221 v8::HandleScope handleScope; 222 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 223 if (context.IsEmpty()) 224 return false; 225 226 v8::Context::Scope scope(context); 227 ExceptionCatcher exceptionCatcher; 228 229 // Lookup the function object and call it. 230 v8::Handle<v8::Object> functionObject(v8NpObject->v8Object); 231 if (!functionObject->IsFunction()) 232 return false; 233 234 v8::Local<v8::Value> resultObject; 235 v8::Handle<v8::Function> function(v8::Function::Cast(*functionObject)); 236 if (!function->IsNull()) { 237 V8Proxy* proxy = toV8Proxy(npObject); 238 ASSERT(proxy); 239 240 OwnArrayPtr<v8::Handle<v8::Value> > argv = createValueListFromVariantArgs(arguments, argumentCount, npObject); 241 resultObject = proxy->callFunction(function, functionObject, argumentCount, argv.get()); 242 } 243 // If we had an error, return false. The spec is a little unclear here, but says "Returns true if the method was 244 // successfully invoked". If we get an error return value, was that successfully invoked? 245 if (resultObject.IsEmpty()) 246 return false; 247 248 convertV8ObjectToNPVariant(resultObject, npObject, result); 249 return true; 250 } 251 252 bool _NPN_Evaluate(NPP npp, NPObject* npObject, NPString* npScript, NPVariant* result) 253 { 254 bool popupsAllowed = PlatformBridge::popupsAllowed(npp); 255 return _NPN_EvaluateHelper(npp, popupsAllowed, npObject, npScript, result); 256 } 257 258 bool _NPN_EvaluateHelper(NPP npp, bool popupsAllowed, NPObject* npObject, NPString* npScript, NPVariant* result) 259 { 260 VOID_TO_NPVARIANT(*result); 261 if (!npObject) 262 return false; 263 264 if (npObject->_class != npScriptObjectClass) 265 return false; 266 267 v8::HandleScope handleScope; 268 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 269 if (context.IsEmpty()) 270 return false; 271 272 V8Proxy* proxy = toV8Proxy(npObject); 273 ASSERT(proxy); 274 275 v8::Context::Scope scope(context); 276 ExceptionCatcher exceptionCatcher; 277 278 String filename; 279 if (!popupsAllowed) 280 filename = "npscript"; 281 282 // Set popupsAllowed flag to the current execution frame, so WebKit can get 283 // right gesture status for popups initiated from plugins. 284 Frame* frame = proxy->frame(); 285 ASSERT(frame); 286 bool oldAllowPopups = frame->script()->allowPopupsFromPlugin(); 287 frame->script()->setAllowPopupsFromPlugin(popupsAllowed); 288 289 String script = String::fromUTF8(npScript->UTF8Characters, npScript->UTF8Length); 290 v8::Local<v8::Value> v8result = proxy->evaluate(ScriptSourceCode(script, KURL(ParsedURLString, filename)), 0); 291 // Restore the old flag. 292 frame->script()->setAllowPopupsFromPlugin(oldAllowPopups); 293 294 if (v8result.IsEmpty()) 295 return false; 296 297 convertV8ObjectToNPVariant(v8result, npObject, result); 298 return true; 299 } 300 301 bool _NPN_GetProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName, NPVariant* result) 302 { 303 if (!npObject) 304 return false; 305 306 if (npObject->_class == npScriptObjectClass) { 307 V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject); 308 309 v8::HandleScope handleScope; 310 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 311 if (context.IsEmpty()) 312 return false; 313 314 v8::Context::Scope scope(context); 315 ExceptionCatcher exceptionCatcher; 316 317 v8::Handle<v8::Object> obj(object->v8Object); 318 v8::Local<v8::Value> v8result = obj->Get(npIdentifierToV8Identifier(propertyName)); 319 320 if (v8result.IsEmpty()) 321 return false; 322 323 convertV8ObjectToNPVariant(v8result, npObject, result); 324 return true; 325 } 326 327 if (npObject->_class->hasProperty && npObject->_class->getProperty) { 328 if (npObject->_class->hasProperty(npObject, propertyName)) 329 return npObject->_class->getProperty(npObject, propertyName, result); 330 } 331 332 VOID_TO_NPVARIANT(*result); 333 return false; 334 } 335 336 bool _NPN_SetProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName, const NPVariant* value) 337 { 338 if (!npObject) 339 return false; 340 341 if (npObject->_class == npScriptObjectClass) { 342 V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject); 343 344 v8::HandleScope handleScope; 345 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 346 if (context.IsEmpty()) 347 return false; 348 349 v8::Context::Scope scope(context); 350 ExceptionCatcher exceptionCatcher; 351 352 v8::Handle<v8::Object> obj(object->v8Object); 353 obj->Set(npIdentifierToV8Identifier(propertyName), 354 convertNPVariantToV8Object(value, object->rootObject->frame()->script()->windowScriptNPObject())); 355 return true; 356 } 357 358 if (npObject->_class->setProperty) 359 return npObject->_class->setProperty(npObject, propertyName, value); 360 361 return false; 362 } 363 364 bool _NPN_RemoveProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName) 365 { 366 if (!npObject) 367 return false; 368 if (npObject->_class != npScriptObjectClass) 369 return false; 370 371 V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject); 372 373 v8::HandleScope handleScope; 374 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 375 if (context.IsEmpty()) 376 return false; 377 v8::Context::Scope scope(context); 378 ExceptionCatcher exceptionCatcher; 379 380 v8::Handle<v8::Object> obj(object->v8Object); 381 // FIXME: Verify that setting to undefined is right. 382 obj->Set(npIdentifierToV8Identifier(propertyName), v8::Undefined()); 383 return true; 384 } 385 386 bool _NPN_HasProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName) 387 { 388 if (!npObject) 389 return false; 390 391 if (npObject->_class == npScriptObjectClass) { 392 V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject); 393 394 v8::HandleScope handleScope; 395 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 396 if (context.IsEmpty()) 397 return false; 398 v8::Context::Scope scope(context); 399 ExceptionCatcher exceptionCatcher; 400 401 v8::Handle<v8::Object> obj(object->v8Object); 402 return obj->Has(npIdentifierToV8Identifier(propertyName)); 403 } 404 405 if (npObject->_class->hasProperty) 406 return npObject->_class->hasProperty(npObject, propertyName); 407 return false; 408 } 409 410 bool _NPN_HasMethod(NPP npp, NPObject* npObject, NPIdentifier methodName) 411 { 412 if (!npObject) 413 return false; 414 415 if (npObject->_class == npScriptObjectClass) { 416 V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject); 417 418 v8::HandleScope handleScope; 419 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 420 if (context.IsEmpty()) 421 return false; 422 v8::Context::Scope scope(context); 423 ExceptionCatcher exceptionCatcher; 424 425 v8::Handle<v8::Object> obj(object->v8Object); 426 v8::Handle<v8::Value> prop = obj->Get(npIdentifierToV8Identifier(methodName)); 427 return prop->IsFunction(); 428 } 429 430 if (npObject->_class->hasMethod) 431 return npObject->_class->hasMethod(npObject, methodName); 432 return false; 433 } 434 435 void _NPN_SetException(NPObject* npObject, const NPUTF8 *message) 436 { 437 if (!npObject || npObject->_class != npScriptObjectClass) { 438 // We won't be able to find a proper scope for this exception, so just throw it. 439 // This is consistent with JSC, which throws a global exception all the time. 440 #if PLATFORM(ANDROID) 441 // However, if there isn't a v8 context, throw the error away as there really isn't anything useful to do with it. 442 if (v8::Context::InContext()) 443 V8Proxy::throwError(V8Proxy::GeneralError, message); 444 #endif 445 return; 446 } 447 v8::HandleScope handleScope; 448 v8::Handle<v8::Context> context = toV8Context(0, npObject); 449 if (context.IsEmpty()) 450 return; 451 452 v8::Context::Scope scope(context); 453 ExceptionCatcher exceptionCatcher; 454 455 V8Proxy::throwError(V8Proxy::GeneralError, message); 456 } 457 458 bool _NPN_Enumerate(NPP npp, NPObject* npObject, NPIdentifier** identifier, uint32_t* count) 459 { 460 if (!npObject) 461 return false; 462 463 if (npObject->_class == npScriptObjectClass) { 464 V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject); 465 466 v8::HandleScope handleScope; 467 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 468 if (context.IsEmpty()) 469 return false; 470 v8::Context::Scope scope(context); 471 ExceptionCatcher exceptionCatcher; 472 473 v8::Handle<v8::Object> obj(object->v8Object); 474 475 // FIXME: http://b/issue?id=1210340: Use a v8::Object::Keys() method when it exists, instead of evaluating javascript. 476 477 // FIXME: Figure out how to cache this helper function. Run a helper function that collects the properties 478 // on the object into an array. 479 const char enumeratorCode[] = 480 "(function (obj) {" 481 " var props = [];" 482 " for (var prop in obj) {" 483 " props[props.length] = prop;" 484 " }" 485 " return props;" 486 "});"; 487 v8::Handle<v8::String> source = v8::String::New(enumeratorCode); 488 v8::Handle<v8::Script> script = v8::Script::Compile(source, 0); 489 v8::Handle<v8::Value> enumeratorObj = script->Run(); 490 v8::Handle<v8::Function> enumerator = v8::Handle<v8::Function>::Cast(enumeratorObj); 491 v8::Handle<v8::Value> argv[] = { obj }; 492 v8::Local<v8::Value> propsObj = enumerator->Call(v8::Handle<v8::Object>::Cast(enumeratorObj), ARRAYSIZE_UNSAFE(argv), argv); 493 if (propsObj.IsEmpty()) 494 return false; 495 496 // Convert the results into an array of NPIdentifiers. 497 v8::Handle<v8::Array> props = v8::Handle<v8::Array>::Cast(propsObj); 498 *count = props->Length(); 499 *identifier = static_cast<NPIdentifier*>(malloc(sizeof(NPIdentifier*) * *count)); 500 for (uint32_t i = 0; i < *count; ++i) { 501 v8::Local<v8::Value> name = props->Get(v8::Integer::New(i)); 502 (*identifier)[i] = getStringIdentifier(v8::Local<v8::String>::Cast(name)); 503 } 504 return true; 505 } 506 507 if (NP_CLASS_STRUCT_VERSION_HAS_ENUM(npObject->_class) && npObject->_class->enumerate) 508 return npObject->_class->enumerate(npObject, identifier, count); 509 510 return false; 511 } 512 513 bool _NPN_Construct(NPP npp, NPObject* npObject, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result) 514 { 515 if (!npObject) 516 return false; 517 518 if (npObject->_class == npScriptObjectClass) { 519 V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject); 520 521 v8::HandleScope handleScope; 522 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 523 if (context.IsEmpty()) 524 return false; 525 v8::Context::Scope scope(context); 526 ExceptionCatcher exceptionCatcher; 527 528 // Lookup the constructor function. 529 v8::Handle<v8::Object> ctorObj(object->v8Object); 530 if (!ctorObj->IsFunction()) 531 return false; 532 533 // Call the constructor. 534 v8::Local<v8::Value> resultObject; 535 v8::Handle<v8::Function> ctor(v8::Function::Cast(*ctorObj)); 536 if (!ctor->IsNull()) { 537 V8Proxy* proxy = toV8Proxy(npObject); 538 ASSERT(proxy); 539 540 OwnArrayPtr<v8::Handle<v8::Value> > argv = createValueListFromVariantArgs(arguments, argumentCount, npObject); 541 resultObject = proxy->newInstance(ctor, argumentCount, argv.get()); 542 } 543 544 if (resultObject.IsEmpty()) 545 return false; 546 547 convertV8ObjectToNPVariant(resultObject, npObject, result); 548 return true; 549 } 550 551 if (NP_CLASS_STRUCT_VERSION_HAS_CTOR(npObject->_class) && npObject->_class->construct) 552 return npObject->_class->construct(npObject, arguments, argumentCount, result); 553 554 return false; 555 } 556
