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 "V8GCController.h" 38 #include "V8Helpers.h" 39 #include "V8Index.h" 40 #include "V8NPUtils.h" 41 #include "V8Proxy.h" 42 #include "npruntime_impl.h" 43 #include "npruntime_priv.h" 44 45 #if PLATFORM(CHROMIUM) 46 #include <bindings/npruntime.h> 47 #else 48 #include "npruntime.h" 49 #endif 50 51 #include <stdio.h> 52 #include <v8.h> 53 #include <wtf/StringExtras.h> 54 55 using WebCore::npObjectInternalFieldCount; 56 using WebCore::toV8Context; 57 using WebCore::toV8Proxy; 58 using WebCore::V8ClassIndex; 59 using WebCore::V8DOMWrapper; 60 using WebCore::V8GCController; 61 using WebCore::V8Proxy; 62 63 // FIXME: Comments on why use malloc and free. 64 static NPObject* allocV8NPObject(NPP, NPClass*) 65 { 66 return static_cast<NPObject*>(malloc(sizeof(V8NPObject))); 67 } 68 69 static void freeV8NPObject(NPObject* npObject) 70 { 71 V8NPObject* v8NpObject = reinterpret_cast<V8NPObject*>(npObject); 72 #ifndef NDEBUG 73 V8GCController::unregisterGlobalHandle(v8NpObject, v8NpObject->v8Object); 74 #endif 75 v8NpObject->v8Object.Dispose(); 76 free(v8NpObject); 77 } 78 79 static v8::Handle<v8::Value>* createValueListFromVariantArgs(const NPVariant* arguments, uint32_t argumentCount, NPObject* owner) 80 { 81 v8::Handle<v8::Value>* argv = new v8::Handle<v8::Value>[argumentCount]; 82 for (uint32_t index = 0; index < argumentCount; index++) { 83 const NPVariant* arg = &arguments[index]; 84 argv[index] = convertNPVariantToV8Object(arg, owner); 85 } 86 return argv; 87 } 88 89 // Create an identifier (null terminated utf8 char*) from the NPIdentifier. 90 static v8::Local<v8::String> npIdentifierToV8Identifier(NPIdentifier name) 91 { 92 PrivateIdentifier* identifier = static_cast<PrivateIdentifier*>(name); 93 if (identifier->isString) 94 return v8::String::New(static_cast<const char*>(identifier->value.string)); 95 96 char buffer[32]; 97 snprintf(buffer, sizeof(buffer), "%d", identifier->value.number); 98 return v8::String::New(buffer); 99 } 100 101 NPObject* v8ObjectToNPObject(v8::Handle<v8::Object> object) 102 { 103 return reinterpret_cast<NPObject*>(object->GetPointerFromInternalField(WebCore::v8DOMWrapperObjectIndex)); 104 } 105 106 static NPClass V8NPObjectClass = { NP_CLASS_STRUCT_VERSION, 107 allocV8NPObject, 108 freeV8NPObject, 109 0, 0, 0, 0, 0, 0, 0, 0, 0 }; 110 111 // NPAPI's npruntime functions. 112 NPClass* npScriptObjectClass = &V8NPObjectClass; 113 114 NPObject* npCreateV8ScriptObject(NPP npp, v8::Handle<v8::Object> object, WebCore::DOMWindow* root) 115 { 116 // Check to see if this object is already wrapped. 117 if (object->InternalFieldCount() == npObjectInternalFieldCount) { 118 v8::Local<v8::Value> typeIndex = object->GetInternalField(WebCore::v8DOMWrapperTypeIndex); 119 if (typeIndex->IsNumber() && typeIndex->Uint32Value() == V8ClassIndex::NPOBJECT) { 120 121 NPObject* returnValue = v8ObjectToNPObject(object); 122 _NPN_RetainObject(returnValue); 123 return returnValue; 124 } 125 } 126 127 V8NPObject* v8npObject = reinterpret_cast<V8NPObject*>(_NPN_CreateObject(npp, &V8NPObjectClass)); 128 v8npObject->v8Object = v8::Persistent<v8::Object>::New(object); 129 #ifndef NDEBUG 130 V8GCController::registerGlobalHandle(WebCore::NPOBJECT, v8npObject, v8npObject->v8Object); 131 #endif 132 v8npObject->rootObject = root; 133 return reinterpret_cast<NPObject*>(v8npObject); 134 } 135 136 bool _NPN_Invoke(NPP npp, NPObject* npObject, NPIdentifier methodName, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result) 137 { 138 if (!npObject) 139 return false; 140 141 if (npObject->_class != npScriptObjectClass) { 142 if (npObject->_class->invoke) 143 return npObject->_class->invoke(npObject, methodName, arguments, argumentCount, result); 144 145 VOID_TO_NPVARIANT(*result); 146 return true; 147 } 148 149 V8NPObject* v8NpObject = reinterpret_cast<V8NPObject*>(npObject); 150 151 PrivateIdentifier* identifier = static_cast<PrivateIdentifier*>(methodName); 152 if (!identifier->isString) 153 return false; 154 155 v8::HandleScope handleScope; 156 // FIXME: should use the plugin's owner frame as the security context. 157 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 158 if (context.IsEmpty()) 159 return false; 160 161 v8::Context::Scope scope(context); 162 163 if (methodName == _NPN_GetStringIdentifier("eval")) { 164 if (argumentCount != 1) 165 return false; 166 if (arguments[0].type != NPVariantType_String) 167 return false; 168 return _NPN_Evaluate(npp, npObject, const_cast<NPString*>(&arguments[0].value.stringValue), result); 169 } 170 171 v8::Handle<v8::Value> functionObject = v8NpObject->v8Object->Get(v8::String::New(identifier->value.string)); 172 if (functionObject.IsEmpty() || functionObject->IsNull()) { 173 NULL_TO_NPVARIANT(*result); 174 return false; 175 } 176 if (functionObject->IsUndefined()) { 177 VOID_TO_NPVARIANT(*result); 178 return false; 179 } 180 181 V8Proxy* proxy = toV8Proxy(npObject); 182 ASSERT(proxy); 183 184 // Call the function object. 185 v8::Handle<v8::Function> function = v8::Handle<v8::Function>::Cast(functionObject); 186 OwnArrayPtr<v8::Handle<v8::Value> > argv(createValueListFromVariantArgs(arguments, argumentCount, npObject)); 187 v8::Local<v8::Value> resultObject = proxy->callFunction(function, v8NpObject->v8Object, argumentCount, argv.get()); 188 189 // If we had an error, return false. The spec is a little unclear here, but says "Returns true if the method was 190 // successfully invoked". If we get an error return value, was that successfully invoked? 191 if (resultObject.IsEmpty()) 192 return false; 193 194 convertV8ObjectToNPVariant(resultObject, npObject, result); 195 return true; 196 } 197 198 // FIXME: Fix it same as _NPN_Invoke (HandleScope and such). 199 bool _NPN_InvokeDefault(NPP npp, NPObject* npObject, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result) 200 { 201 if (!npObject) 202 return false; 203 204 if (npObject->_class != npScriptObjectClass) { 205 if (npObject->_class->invokeDefault) 206 return npObject->_class->invokeDefault(npObject, arguments, argumentCount, result); 207 208 VOID_TO_NPVARIANT(*result); 209 return true; 210 } 211 212 V8NPObject* v8NpObject = reinterpret_cast<V8NPObject*>(npObject); 213 214 VOID_TO_NPVARIANT(*result); 215 216 v8::HandleScope handleScope; 217 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 218 if (context.IsEmpty()) 219 return false; 220 221 v8::Context::Scope scope(context); 222 223 // Lookup the function object and call it. 224 v8::Handle<v8::Object> functionObject(v8NpObject->v8Object); 225 if (!functionObject->IsFunction()) 226 return false; 227 228 v8::Local<v8::Value> resultObject; 229 v8::Handle<v8::Function> function(v8::Function::Cast(*functionObject)); 230 if (!function->IsNull()) { 231 V8Proxy* proxy = toV8Proxy(npObject); 232 ASSERT(proxy); 233 234 OwnArrayPtr<v8::Handle<v8::Value> > argv(createValueListFromVariantArgs(arguments, argumentCount, npObject)); 235 resultObject = proxy->callFunction(function, functionObject, argumentCount, argv.get()); 236 } 237 // If we had an error, return false. The spec is a little unclear here, but says "Returns true if the method was 238 // successfully invoked". If we get an error return value, was that successfully invoked? 239 if (resultObject.IsEmpty()) 240 return false; 241 242 convertV8ObjectToNPVariant(resultObject, npObject, result); 243 return true; 244 } 245 246 bool _NPN_Evaluate(NPP npp, NPObject* npObject, NPString* npScript, NPVariant* result) 247 { 248 bool popupsAllowed = WebCore::PlatformBridge::popupsAllowed(npp); 249 return _NPN_EvaluateHelper(npp, popupsAllowed, npObject, npScript, result); 250 } 251 252 bool _NPN_EvaluateHelper(NPP npp, bool popupsAllowed, NPObject* npObject, NPString* npScript, NPVariant* result) 253 { 254 VOID_TO_NPVARIANT(*result); 255 if (!npObject) 256 return false; 257 258 if (npObject->_class != npScriptObjectClass) 259 return false; 260 261 v8::HandleScope handleScope; 262 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 263 if (context.IsEmpty()) 264 return false; 265 266 V8Proxy* proxy = toV8Proxy(npObject); 267 ASSERT(proxy); 268 269 v8::Context::Scope scope(context); 270 271 WebCore::String filename; 272 if (!popupsAllowed) 273 filename = "npscript"; 274 275 WebCore::String script = WebCore::String::fromUTF8(npScript->UTF8Characters, npScript->UTF8Length); 276 v8::Local<v8::Value> v8result = proxy->evaluate(WebCore::ScriptSourceCode(script, WebCore::KURL(WebCore::ParsedURLString, filename)), 0); 277 278 if (v8result.IsEmpty()) 279 return false; 280 281 convertV8ObjectToNPVariant(v8result, npObject, result); 282 return true; 283 } 284 285 bool _NPN_GetProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName, NPVariant* result) 286 { 287 if (!npObject) 288 return false; 289 290 if (npObject->_class == npScriptObjectClass) { 291 V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject); 292 293 v8::HandleScope handleScope; 294 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 295 if (context.IsEmpty()) 296 return false; 297 298 v8::Context::Scope scope(context); 299 300 v8::Handle<v8::Object> obj(object->v8Object); 301 v8::Local<v8::Value> v8result = obj->Get(npIdentifierToV8Identifier(propertyName)); 302 303 convertV8ObjectToNPVariant(v8result, npObject, result); 304 return true; 305 } 306 307 if (npObject->_class->hasProperty && npObject->_class->getProperty) { 308 if (npObject->_class->hasProperty(npObject, propertyName)) 309 return npObject->_class->getProperty(npObject, propertyName, result); 310 } 311 312 VOID_TO_NPVARIANT(*result); 313 return false; 314 } 315 316 bool _NPN_SetProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName, const NPVariant* value) 317 { 318 if (!npObject) 319 return false; 320 321 if (npObject->_class == npScriptObjectClass) { 322 V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject); 323 324 v8::HandleScope handleScope; 325 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 326 if (context.IsEmpty()) 327 return false; 328 329 v8::Context::Scope scope(context); 330 331 v8::Handle<v8::Object> obj(object->v8Object); 332 obj->Set(npIdentifierToV8Identifier(propertyName), 333 convertNPVariantToV8Object(value, object->rootObject->frame()->script()->windowScriptNPObject())); 334 return true; 335 } 336 337 if (npObject->_class->setProperty) 338 return npObject->_class->setProperty(npObject, propertyName, value); 339 340 return false; 341 } 342 343 bool _NPN_RemoveProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName) 344 { 345 if (!npObject) 346 return false; 347 if (npObject->_class != npScriptObjectClass) 348 return false; 349 350 V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject); 351 352 v8::HandleScope handleScope; 353 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 354 if (context.IsEmpty()) 355 return false; 356 v8::Context::Scope scope(context); 357 358 v8::Handle<v8::Object> obj(object->v8Object); 359 // FIXME: Verify that setting to undefined is right. 360 obj->Set(npIdentifierToV8Identifier(propertyName), v8::Undefined()); 361 return true; 362 } 363 364 bool _NPN_HasProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName) 365 { 366 if (!npObject) 367 return false; 368 369 if (npObject->_class == npScriptObjectClass) { 370 V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject); 371 372 v8::HandleScope handleScope; 373 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 374 if (context.IsEmpty()) 375 return false; 376 v8::Context::Scope scope(context); 377 378 v8::Handle<v8::Object> obj(object->v8Object); 379 return obj->Has(npIdentifierToV8Identifier(propertyName)); 380 } 381 382 if (npObject->_class->hasProperty) 383 return npObject->_class->hasProperty(npObject, propertyName); 384 return false; 385 } 386 387 bool _NPN_HasMethod(NPP npp, NPObject* npObject, NPIdentifier methodName) 388 { 389 if (!npObject) 390 return false; 391 392 if (npObject->_class == npScriptObjectClass) { 393 V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject); 394 395 v8::HandleScope handleScope; 396 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 397 if (context.IsEmpty()) 398 return false; 399 v8::Context::Scope scope(context); 400 401 v8::Handle<v8::Object> obj(object->v8Object); 402 v8::Handle<v8::Value> prop = obj->Get(npIdentifierToV8Identifier(methodName)); 403 return prop->IsFunction(); 404 } 405 406 if (npObject->_class->hasMethod) 407 return npObject->_class->hasMethod(npObject, methodName); 408 return false; 409 } 410 411 void _NPN_SetException(NPObject* npObject, const NPUTF8 *message) 412 { 413 if (!npObject || npObject->_class != npScriptObjectClass) { 414 // We won't be able to find a proper scope for this exception, so just throw it. 415 // This is consistent with JSC, which throws a global exception all the time. 416 #if PLATFORM(ANDROID) 417 // However, if there isn't a v8 context, throw the error away as there really isn't anything useful to do with it. 418 if (v8::Context::InContext()) 419 V8Proxy::throwError(V8Proxy::GeneralError, message); 420 #endif 421 return; 422 } 423 v8::HandleScope handleScope; 424 v8::Handle<v8::Context> context = toV8Context(0, npObject); 425 if (context.IsEmpty()) 426 return; 427 428 v8::Context::Scope scope(context); 429 V8Proxy::throwError(V8Proxy::GeneralError, message); 430 } 431 432 bool _NPN_Enumerate(NPP npp, NPObject* npObject, NPIdentifier** identifier, uint32_t* count) 433 { 434 if (!npObject) 435 return false; 436 437 if (npObject->_class == npScriptObjectClass) { 438 V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject); 439 440 v8::HandleScope handleScope; 441 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 442 if (context.IsEmpty()) 443 return false; 444 v8::Context::Scope scope(context); 445 446 v8::Handle<v8::Object> obj(object->v8Object); 447 448 // FIXME: http://b/issue?id=1210340: Use a v8::Object::Keys() method when it exists, instead of evaluating javascript. 449 450 // FIXME: Figure out how to cache this helper function. Run a helper function that collects the properties 451 // on the object into an array. 452 const char enumeratorCode[] = 453 "(function (obj) {" 454 " var props = [];" 455 " for (var prop in obj) {" 456 " props[props.length] = prop;" 457 " }" 458 " return props;" 459 "});"; 460 v8::Handle<v8::String> source = v8::String::New(enumeratorCode); 461 v8::Handle<v8::Script> script = v8::Script::Compile(source, 0); 462 v8::Handle<v8::Value> enumeratorObj = script->Run(); 463 v8::Handle<v8::Function> enumerator = v8::Handle<v8::Function>::Cast(enumeratorObj); 464 v8::Handle<v8::Value> argv[] = { obj }; 465 v8::Local<v8::Value> propsObj = enumerator->Call(v8::Handle<v8::Object>::Cast(enumeratorObj), ARRAYSIZE_UNSAFE(argv), argv); 466 if (propsObj.IsEmpty()) 467 return false; 468 469 // Convert the results into an array of NPIdentifiers. 470 v8::Handle<v8::Array> props = v8::Handle<v8::Array>::Cast(propsObj); 471 *count = props->Length(); 472 *identifier = static_cast<NPIdentifier*>(malloc(sizeof(NPIdentifier*) * *count)); 473 for (uint32_t i = 0; i < *count; ++i) { 474 v8::Local<v8::Value> name = props->Get(v8::Integer::New(i)); 475 (*identifier)[i] = getStringIdentifier(v8::Local<v8::String>::Cast(name)); 476 } 477 return true; 478 } 479 480 if (NP_CLASS_STRUCT_VERSION_HAS_ENUM(npObject->_class) && npObject->_class->enumerate) 481 return npObject->_class->enumerate(npObject, identifier, count); 482 483 return false; 484 } 485 486 bool _NPN_Construct(NPP npp, NPObject* npObject, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result) 487 { 488 if (!npObject) 489 return false; 490 491 if (npObject->_class == npScriptObjectClass) { 492 V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject); 493 494 v8::HandleScope handleScope; 495 v8::Handle<v8::Context> context = toV8Context(npp, npObject); 496 if (context.IsEmpty()) 497 return false; 498 v8::Context::Scope scope(context); 499 500 // Lookup the constructor function. 501 v8::Handle<v8::Object> ctorObj(object->v8Object); 502 if (!ctorObj->IsFunction()) 503 return false; 504 505 // Call the constructor. 506 v8::Local<v8::Value> resultObject; 507 v8::Handle<v8::Function> ctor(v8::Function::Cast(*ctorObj)); 508 if (!ctor->IsNull()) { 509 V8Proxy* proxy = toV8Proxy(npObject); 510 ASSERT(proxy); 511 512 OwnArrayPtr<v8::Handle<v8::Value> > argv(createValueListFromVariantArgs(arguments, argumentCount, npObject)); 513 resultObject = proxy->newInstance(ctor, argumentCount, argv.get()); 514 } 515 516 if (resultObject.IsEmpty()) 517 return false; 518 519 convertV8ObjectToNPVariant(resultObject, npObject, result); 520 return true; 521 } 522 523 if (NP_CLASS_STRUCT_VERSION_HAS_CTOR(npObject->_class) && npObject->_class->construct) 524 return npObject->_class->construct(npObject, arguments, argumentCount, result); 525 526 return false; 527 } 528
