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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 "bindings/core/v8/NPV8Object.h" | |
29 | |
30 #include "bindings/core/v8/ScriptController.h" | |
31 #include "bindings/core/v8/ScriptSourceCode.h" | |
32 #include "bindings/core/v8/V8Binding.h" | |
33 #include "bindings/core/v8/V8GCController.h" | |
34 #include "bindings/core/v8/V8NPUtils.h" | |
35 #include "bindings/core/v8/V8ObjectConstructor.h" | |
36 #include "bindings/core/v8/V8ScriptRunner.h" | |
37 #include "bindings/core/v8/WrapperTypeInfo.h" | |
38 #include "bindings/core/v8/npruntime_impl.h" | |
39 #include "bindings/core/v8/npruntime_priv.h" | |
40 #include "core/frame/LocalDOMWindow.h" | |
41 #include "core/frame/LocalFrame.h" | |
42 #include "platform/ScriptForbiddenScope.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 blink { | |
52 | |
53 namespace { | |
54 | |
55 void trace(Visitor*, ScriptWrappable*) | |
56 { | |
57 } | |
58 | |
59 } // namespace | |
60 | |
61 const WrapperTypeInfo* npObjectTypeInfo() | |
62 { | |
63 static const WrapperTypeInfo typeInfo = { gin::kEmbedderBlink, 0, 0, 0, trac
e, 0, 0, 0, 0, "NPObject", 0, WrapperTypeInfo::WrapperTypeObjectPrototype, Wrapp
erTypeInfo::ObjectClassId, WrapperTypeInfo::NotInheritFromEventTarget, WrapperTy
peInfo::Dependent, WrapperTypeInfo::RefCountedObject }; | |
64 return &typeInfo; | |
65 } | |
66 | |
67 // FIXME: Comments on why use malloc and free. | |
68 static NPObject* allocV8NPObject(NPP, NPClass*) | |
69 { | |
70 return static_cast<NPObject*>(malloc(sizeof(V8NPObject))); | |
71 } | |
72 | |
73 static void freeV8NPObject(NPObject* npObject) | |
74 { | |
75 V8NPObject* v8NpObject = reinterpret_cast<V8NPObject*>(npObject); | |
76 disposeUnderlyingV8Object(v8::Isolate::GetCurrent(), npObject); | |
77 free(v8NpObject); | |
78 } | |
79 | |
80 static NPClass V8NPObjectClass = { | |
81 NP_CLASS_STRUCT_VERSION, | |
82 allocV8NPObject, | |
83 freeV8NPObject, | |
84 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 | |
85 }; | |
86 | |
87 static ScriptState* mainWorldScriptState(v8::Isolate* isolate, NPObject* npObjec
t) | |
88 { | |
89 ASSERT(npObject->_class == &V8NPObjectClass); | |
90 V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject); | |
91 LocalDOMWindow* window = object->rootObject; | |
92 if (!window || !window->frame()) | |
93 return nullptr; | |
94 return ScriptState::forMainWorld(window->frame()); | |
95 } | |
96 | |
97 static PassOwnPtr<v8::Local<v8::Value>[]> createValueListFromVariantArgs(v8::Iso
late* isolate, const NPVariant* arguments, uint32_t argumentCount, NPObject* own
er) | |
98 { | |
99 OwnPtr<v8::Local<v8::Value>[]> argv = adoptArrayPtr(new v8::Local<v8::Value>
[argumentCount]); | |
100 for (uint32_t index = 0; index < argumentCount; index++) { | |
101 const NPVariant* arg = &arguments[index]; | |
102 argv[index] = convertNPVariantToV8Object(isolate, arg, owner); | |
103 } | |
104 return argv.release(); | |
105 } | |
106 | |
107 // Create an identifier (null terminated utf8 char*) from the NPIdentifier. | |
108 static v8::Local<v8::String> npIdentifierToV8Identifier(v8::Isolate* isolate, NP
Identifier name) | |
109 { | |
110 PrivateIdentifier* identifier = static_cast<PrivateIdentifier*>(name); | |
111 if (identifier->isString) | |
112 return v8AtomicString(isolate, static_cast<const char*>(identifier->valu
e.string)); | |
113 | |
114 char buffer[32]; | |
115 snprintf(buffer, sizeof(buffer), "%d", identifier->value.number); | |
116 return v8AtomicString(isolate, buffer); | |
117 } | |
118 | |
119 NPObject* v8ObjectToNPObject(v8::Local<v8::Object> object) | |
120 { | |
121 return getInternalField<NPObject, v8DOMWrapperObjectIndex>(object); | |
122 } | |
123 | |
124 bool isWrappedNPObject(v8::Local<v8::Object> object) | |
125 { | |
126 return object->InternalFieldCount() == npObjectInternalFieldCount | |
127 && toWrapperTypeInfo(object) == npObjectTypeInfo(); | |
128 } | |
129 | |
130 NPObject* npCreateV8ScriptObject(v8::Isolate* isolate, NPP npp, v8::Local<v8::Ob
ject> object, LocalDOMWindow* root) | |
131 { | |
132 // Check to see if this object is already wrapped. | |
133 if (isWrappedNPObject(object)) { | |
134 NPObject* returnValue = v8ObjectToNPObject(object); | |
135 _NPN_RetainObject(returnValue); | |
136 return returnValue; | |
137 } | |
138 | |
139 V8NPObjectVector* objectVector = 0; | |
140 if (V8PerContextData* perContextData = V8PerContextData::from(object->Creati
onContext())) { | |
141 int v8ObjectHash = object->GetIdentityHash(); | |
142 ASSERT(v8ObjectHash); | |
143 V8NPObjectMap* v8NPObjectMap = perContextData->getV8NPObjectMap(); | |
144 V8NPObjectMap::iterator iter = v8NPObjectMap->find(v8ObjectHash); | |
145 if (iter != v8NPObjectMap->end()) { | |
146 V8NPObjectVector& objects = iter->value; | |
147 for (size_t index = 0; index < objects.size(); ++index) { | |
148 V8NPObject* v8npObject = objects.at(index); | |
149 if (v8npObject->v8Object == object && v8npObject->rootObject ==
root) { | |
150 _NPN_RetainObject(&v8npObject->object); | |
151 return reinterpret_cast<NPObject*>(v8npObject); | |
152 } | |
153 } | |
154 objectVector = &iter->value; | |
155 } else { | |
156 objectVector = &v8NPObjectMap->set(v8ObjectHash, V8NPObjectVector())
.storedValue->value; | |
157 } | |
158 } | |
159 | |
160 V8NPObject* v8npObject = reinterpret_cast<V8NPObject*>(_NPN_CreateObject(npp
, &V8NPObjectClass)); | |
161 // This is uninitialized memory, we need to clear it so that | |
162 // Persistent::Reset won't try to Dispose anything bogus. | |
163 new (&v8npObject->v8Object) v8::Persistent<v8::Object>(); | |
164 v8npObject->v8Object.Reset(isolate, object); | |
165 v8npObject->rootObject = root; | |
166 | |
167 if (objectVector) | |
168 objectVector->append(v8npObject); | |
169 | |
170 return reinterpret_cast<NPObject*>(v8npObject); | |
171 } | |
172 | |
173 V8NPObject* npObjectToV8NPObject(NPObject* npObject) | |
174 { | |
175 if (npObject->_class != &V8NPObjectClass) | |
176 return 0; | |
177 V8NPObject* v8NpObject = reinterpret_cast<V8NPObject*>(npObject); | |
178 if (v8NpObject->v8Object.IsEmpty()) | |
179 return 0; | |
180 return v8NpObject; | |
181 } | |
182 | |
183 ScriptWrappable* npObjectToScriptWrappable(NPObject* npObject) | |
184 { | |
185 return reinterpret_cast<ScriptWrappable*>(npObject); | |
186 } | |
187 | |
188 void disposeUnderlyingV8Object(v8::Isolate* isolate, NPObject* npObject) | |
189 { | |
190 ASSERT(npObject); | |
191 V8NPObject* v8NpObject = npObjectToV8NPObject(npObject); | |
192 if (!v8NpObject) | |
193 return; | |
194 v8::HandleScope scope(isolate); | |
195 v8::Local<v8::Object> v8Object = v8::Local<v8::Object>::New(isolate, v8NpObj
ect->v8Object); | |
196 ASSERT(!v8Object->CreationContext().IsEmpty()); | |
197 if (V8PerContextData* perContextData = V8PerContextData::from(v8Object->Crea
tionContext())) { | |
198 V8NPObjectMap* v8NPObjectMap = perContextData->getV8NPObjectMap(); | |
199 int v8ObjectHash = v8Object->GetIdentityHash(); | |
200 ASSERT(v8ObjectHash); | |
201 V8NPObjectMap::iterator iter = v8NPObjectMap->find(v8ObjectHash); | |
202 if (iter != v8NPObjectMap->end()) { | |
203 V8NPObjectVector& objects = iter->value; | |
204 for (size_t index = 0; index < objects.size(); ++index) { | |
205 if (objects.at(index) == v8NpObject) { | |
206 objects.remove(index); | |
207 break; | |
208 } | |
209 } | |
210 if (objects.isEmpty()) | |
211 v8NPObjectMap->remove(v8ObjectHash); | |
212 } | |
213 } | |
214 v8NpObject->v8Object.Reset(); | |
215 v8NpObject->rootObject = 0; | |
216 } | |
217 | |
218 } // namespace blink | |
219 | |
220 bool _NPN_Invoke(NPP npp, NPObject* npObject, NPIdentifier methodName, const NPV
ariant* arguments, uint32_t argumentCount, NPVariant* result) | |
221 { | |
222 if (!npObject) | |
223 return false; | |
224 | |
225 v8::Isolate* isolate = v8::Isolate::GetCurrent(); | |
226 | |
227 V8NPObject* v8NpObject = npObjectToV8NPObject(npObject); | |
228 if (!v8NpObject) { | |
229 if (npObject->_class->invoke) | |
230 return npObject->_class->invoke(npObject, methodName, arguments, arg
umentCount, result); | |
231 | |
232 VOID_TO_NPVARIANT(*result); | |
233 return true; | |
234 } | |
235 | |
236 PrivateIdentifier* identifier = static_cast<PrivateIdentifier*>(methodName); | |
237 if (!identifier->isString) | |
238 return false; | |
239 | |
240 if (!strcmp(identifier->value.string, "eval")) { | |
241 if (argumentCount != 1) | |
242 return false; | |
243 if (arguments[0].type != NPVariantType_String) | |
244 return false; | |
245 return _NPN_Evaluate(npp, npObject, const_cast<NPString*>(&arguments[0].
value.stringValue), result); | |
246 } | |
247 | |
248 // FIXME: should use the plugin's owner frame as the security context. | |
249 ScriptState* scriptState = mainWorldScriptState(isolate, npObject); | |
250 if (!scriptState) | |
251 return false; | |
252 | |
253 ScriptState::Scope scope(scriptState); | |
254 v8::TryCatch tryCatch(isolate); | |
255 | |
256 v8::Local<v8::Object> v8Object = v8::Local<v8::Object>::New(isolate, v8NpObj
ect->v8Object); | |
257 v8::Local<v8::Value> functionObject; | |
258 if (!v8Object->Get(scriptState->context(), v8AtomicString(scriptState->isola
te(), identifier->value.string)).ToLocal(&functionObject) || functionObject->IsN
ull()) { | |
259 NULL_TO_NPVARIANT(*result); | |
260 return false; | |
261 } | |
262 if (functionObject->IsUndefined()) { | |
263 VOID_TO_NPVARIANT(*result); | |
264 return false; | |
265 } | |
266 | |
267 LocalFrame* frame = v8NpObject->rootObject->frame(); | |
268 ASSERT(frame); | |
269 | |
270 // Call the function object. | |
271 v8::Local<v8::Function> function = v8::Local<v8::Function>::Cast(functionObj
ect); | |
272 OwnPtr<v8::Local<v8::Value>[]> argv = createValueListFromVariantArgs(isolate
, arguments, argumentCount, npObject); | |
273 // If we had an error, return false. The spec is a little unclear here, but
says "Returns true if the method was | |
274 // successfully invoked". If we get an error return value, was that success
fully invoked? | |
275 v8::Local<v8::Value> resultObject; | |
276 if (!frame->script().callFunction(function, v8Object, argumentCount, argv.ge
t()).ToLocal(&resultObject)) | |
277 return false; | |
278 | |
279 convertV8ObjectToNPVariant(isolate, resultObject, npObject, result); | |
280 return true; | |
281 } | |
282 | |
283 // FIXME: Fix it same as _NPN_Invoke (HandleScope and such). | |
284 bool _NPN_InvokeDefault(NPP npp, NPObject* npObject, const NPVariant* arguments,
uint32_t argumentCount, NPVariant* result) | |
285 { | |
286 if (!npObject) | |
287 return false; | |
288 | |
289 v8::Isolate* isolate = v8::Isolate::GetCurrent(); | |
290 | |
291 V8NPObject* v8NpObject = npObjectToV8NPObject(npObject); | |
292 if (!v8NpObject) { | |
293 if (npObject->_class->invokeDefault) | |
294 return npObject->_class->invokeDefault(npObject, arguments, argument
Count, result); | |
295 | |
296 VOID_TO_NPVARIANT(*result); | |
297 return true; | |
298 } | |
299 | |
300 VOID_TO_NPVARIANT(*result); | |
301 | |
302 ScriptState* scriptState = mainWorldScriptState(isolate, npObject); | |
303 if (!scriptState) | |
304 return false; | |
305 | |
306 ScriptState::Scope scope(scriptState); | |
307 v8::TryCatch tryCatch(isolate); | |
308 | |
309 // Lookup the function object and call it. | |
310 v8::Local<v8::Object> functionObject = v8::Local<v8::Object>::New(isolate, v
8NpObject->v8Object); | |
311 if (!functionObject->IsFunction()) | |
312 return false; | |
313 | |
314 v8::Local<v8::Function> function = v8::Local<v8::Function>::Cast(functionObj
ect); | |
315 if (function->IsNull()) | |
316 return false; | |
317 | |
318 LocalFrame* frame = v8NpObject->rootObject->frame(); | |
319 ASSERT(frame); | |
320 | |
321 OwnPtr<v8::Local<v8::Value>[]> argv = createValueListFromVariantArgs(isolate
, arguments, argumentCount, npObject); | |
322 // If we had an error, return false. The spec is a little unclear here, but
says "Returns true if the method was | |
323 // successfully invoked". If we get an error return value, was that success
fully invoked? | |
324 v8::Local<v8::Value> resultObject; | |
325 if (!frame->script().callFunction(function, functionObject, argumentCount, a
rgv.get()).ToLocal(&resultObject)) | |
326 return false; | |
327 | |
328 convertV8ObjectToNPVariant(isolate, resultObject, npObject, result); | |
329 return true; | |
330 } | |
331 | |
332 bool _NPN_Evaluate(NPP npp, NPObject* npObject, NPString* npScript, NPVariant* r
esult) | |
333 { | |
334 // FIXME: Give the embedder a way to control this. | |
335 bool popupsAllowed = false; | |
336 return _NPN_EvaluateHelper(npp, popupsAllowed, npObject, npScript, result); | |
337 } | |
338 | |
339 bool _NPN_EvaluateHelper(NPP npp, bool popupsAllowed, NPObject* npObject, NPStri
ng* npScript, NPVariant* result) | |
340 { | |
341 VOID_TO_NPVARIANT(*result); | |
342 if (ScriptForbiddenScope::isScriptForbidden()) | |
343 return false; | |
344 | |
345 if (!npObject) | |
346 return false; | |
347 | |
348 V8NPObject* v8NpObject = npObjectToV8NPObject(npObject); | |
349 if (!v8NpObject) | |
350 return false; | |
351 | |
352 v8::Isolate* isolate = v8::Isolate::GetCurrent(); | |
353 ScriptState* scriptState = mainWorldScriptState(isolate, npObject); | |
354 if (!scriptState) | |
355 return false; | |
356 | |
357 ScriptState::Scope scope(scriptState); | |
358 v8::TryCatch tryCatch(isolate); | |
359 | |
360 // FIXME: Is this branch still needed after switching to using UserGestureIn
dicator? | |
361 String filename; | |
362 if (!popupsAllowed) | |
363 filename = "npscript"; | |
364 | |
365 LocalFrame* frame = v8NpObject->rootObject->frame(); | |
366 ASSERT(frame); | |
367 | |
368 String script = String::fromUTF8(npScript->UTF8Characters, npScript->UTF8Len
gth); | |
369 | |
370 UserGestureIndicator gestureIndicator(popupsAllowed ? DefinitelyProcessingNe
wUserGesture : PossiblyProcessingUserGesture); | |
371 v8::Local<v8::Value> v8result = frame->script().executeScriptAndReturnValue(
scriptState->context(), ScriptSourceCode(script, KURL(ParsedURLString, filename)
)); | |
372 | |
373 if (v8result.IsEmpty()) | |
374 return false; | |
375 | |
376 if (_NPN_IsAlive(npObject)) | |
377 convertV8ObjectToNPVariant(isolate, v8result, npObject, result); | |
378 return true; | |
379 } | |
380 | |
381 bool _NPN_GetProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName, NP
Variant* result) | |
382 { | |
383 if (!npObject) | |
384 return false; | |
385 | |
386 if (V8NPObject* object = npObjectToV8NPObject(npObject)) { | |
387 v8::Isolate* isolate = v8::Isolate::GetCurrent(); | |
388 ScriptState* scriptState = mainWorldScriptState(isolate, npObject); | |
389 if (!scriptState) | |
390 return false; | |
391 | |
392 ScriptState::Scope scope(scriptState); | |
393 v8::TryCatch tryCatch(isolate); | |
394 | |
395 v8::Local<v8::Object> obj = v8::Local<v8::Object>::New(isolate, object->
v8Object); | |
396 v8::Local<v8::Value> v8result; | |
397 if (!obj->Get(scriptState->context(), npIdentifierToV8Identifier(scriptS
tate->isolate(), propertyName)).ToLocal(&v8result)) | |
398 return false; | |
399 | |
400 convertV8ObjectToNPVariant(isolate, v8result, npObject, result); | |
401 return true; | |
402 } | |
403 | |
404 if (npObject->_class->hasProperty && npObject->_class->getProperty) { | |
405 if (npObject->_class->hasProperty(npObject, propertyName)) | |
406 return npObject->_class->getProperty(npObject, propertyName, result)
; | |
407 } | |
408 | |
409 VOID_TO_NPVARIANT(*result); | |
410 return false; | |
411 } | |
412 | |
413 bool _NPN_SetProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName, co
nst NPVariant* value) | |
414 { | |
415 if (!npObject) | |
416 return false; | |
417 | |
418 if (V8NPObject* object = npObjectToV8NPObject(npObject)) { | |
419 v8::Isolate* isolate = v8::Isolate::GetCurrent(); | |
420 ScriptState* scriptState = mainWorldScriptState(isolate, npObject); | |
421 if (!scriptState) | |
422 return false; | |
423 | |
424 ScriptState::Scope scope(scriptState); | |
425 v8::TryCatch tryCatch(isolate); | |
426 | |
427 v8::Local<v8::Object> obj = v8::Local<v8::Object>::New(isolate, object->
v8Object); | |
428 return v8CallBoolean(obj->Set(scriptState->context(), npIdentifierToV8Id
entifier(isolate, propertyName), convertNPVariantToV8Object(isolate, value, obje
ct->rootObject->frame()->script().windowScriptNPObject()))); | |
429 } | |
430 | |
431 if (npObject->_class->setProperty) | |
432 return npObject->_class->setProperty(npObject, propertyName, value); | |
433 | |
434 return false; | |
435 } | |
436 | |
437 bool _NPN_RemoveProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName) | |
438 { | |
439 if (!npObject) | |
440 return false; | |
441 | |
442 V8NPObject* object = npObjectToV8NPObject(npObject); | |
443 if (!object) | |
444 return false; | |
445 | |
446 v8::Isolate* isolate = v8::Isolate::GetCurrent(); | |
447 ScriptState* scriptState = mainWorldScriptState(isolate, npObject); | |
448 if (!scriptState) | |
449 return false; | |
450 ScriptState::Scope scope(scriptState); | |
451 v8::TryCatch tryCatch(isolate); | |
452 | |
453 v8::Local<v8::Object> obj = v8::Local<v8::Object>::New(isolate, object->v8Ob
ject); | |
454 // FIXME: Verify that setting to undefined is right. | |
455 return v8CallBoolean(obj->Set(scriptState->context(), npIdentifierToV8Identi
fier(isolate, propertyName), v8::Undefined(isolate))); | |
456 } | |
457 | |
458 bool _NPN_HasProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName) | |
459 { | |
460 if (!npObject) | |
461 return false; | |
462 | |
463 if (V8NPObject* object = npObjectToV8NPObject(npObject)) { | |
464 v8::Isolate* isolate = v8::Isolate::GetCurrent(); | |
465 ScriptState* scriptState = mainWorldScriptState(isolate, npObject); | |
466 if (!scriptState) | |
467 return false; | |
468 ScriptState::Scope scope(scriptState); | |
469 v8::TryCatch tryCatch(isolate); | |
470 | |
471 v8::Local<v8::Object> obj = v8::Local<v8::Object>::New(scriptState->isol
ate(), object->v8Object); | |
472 return v8CallBoolean(obj->Has(scriptState->context(), npIdentifierToV8Id
entifier(scriptState->isolate(), propertyName))); | |
473 } | |
474 | |
475 if (npObject->_class->hasProperty) | |
476 return npObject->_class->hasProperty(npObject, propertyName); | |
477 return false; | |
478 } | |
479 | |
480 bool _NPN_HasMethod(NPP npp, NPObject* npObject, NPIdentifier methodName) | |
481 { | |
482 if (!npObject) | |
483 return false; | |
484 | |
485 if (V8NPObject* object = npObjectToV8NPObject(npObject)) { | |
486 v8::Isolate* isolate = v8::Isolate::GetCurrent(); | |
487 ScriptState* scriptState = mainWorldScriptState(isolate, npObject); | |
488 if (!scriptState) | |
489 return false; | |
490 ScriptState::Scope scope(scriptState); | |
491 v8::TryCatch tryCatch(isolate); | |
492 | |
493 v8::Local<v8::Object> obj = v8::Local<v8::Object>::New(isolate, object->
v8Object); | |
494 v8::Local<v8::Value> prop; | |
495 if (!obj->Get(scriptState->context(), npIdentifierToV8Identifier(scriptS
tate->isolate(), methodName)).ToLocal(&prop)) | |
496 return false; | |
497 return prop->IsFunction(); | |
498 } | |
499 | |
500 if (npObject->_class->hasMethod) | |
501 return npObject->_class->hasMethod(npObject, methodName); | |
502 return false; | |
503 } | |
504 | |
505 void _NPN_SetException(NPObject* npObject, const NPUTF8 *message) | |
506 { | |
507 if (!npObject || !npObjectToV8NPObject(npObject)) { | |
508 // We won't be able to find a proper scope for this exception, so just t
hrow it. | |
509 // This is consistent with JSC, which throws a global exception all the
time. | |
510 V8ThrowException::throwGeneralError(v8::Isolate::GetCurrent(), message); | |
511 return; | |
512 } | |
513 | |
514 v8::Isolate* isolate = v8::Isolate::GetCurrent(); | |
515 ScriptState* scriptState = mainWorldScriptState(isolate, npObject); | |
516 if (!scriptState) | |
517 return; | |
518 | |
519 ScriptState::Scope scope(scriptState); | |
520 v8::TryCatch tryCatch(isolate); | |
521 | |
522 V8ThrowException::throwGeneralError(isolate, message); | |
523 } | |
524 | |
525 bool _NPN_Enumerate(NPP npp, NPObject* npObject, NPIdentifier** identifier, uint
32_t* count) | |
526 { | |
527 if (!npObject) | |
528 return false; | |
529 | |
530 if (V8NPObject* object = npObjectToV8NPObject(npObject)) { | |
531 ScriptState* scriptState = mainWorldScriptState(v8::Isolate::GetCurrent(
), npObject); | |
532 if (!scriptState) | |
533 return false; | |
534 ScriptState::Scope scope(scriptState); | |
535 v8::TryCatch tryCatch(scriptState->isolate()); | |
536 | |
537 v8::Local<v8::Object> obj = v8::Local<v8::Object>::New(scriptState->isol
ate(), object->v8Object); | |
538 | |
539 // FIXME: http://b/issue?id=1210340: Use a v8::Object::Keys() method whe
n it exists, instead of evaluating javascript. | |
540 | |
541 // FIXME: Figure out how to cache this helper function. Run a helper fu
nction that collects the properties | |
542 // on the object into an array. | |
543 const char enumeratorCode[] = | |
544 "(function (obj) {" | |
545 " var props = [];" | |
546 " for (var prop in obj) {" | |
547 " props[props.length] = prop;" | |
548 " }" | |
549 " return props;" | |
550 "});"; | |
551 v8::Local<v8::String> source = v8AtomicString(scriptState->isolate(), en
umeratorCode); | |
552 v8::Local<v8::Value> result; | |
553 if (!V8ScriptRunner::compileAndRunInternalScript(source, scriptState->is
olate()).ToLocal(&result)) | |
554 return false; | |
555 ASSERT(result->IsFunction()); | |
556 v8::Local<v8::Function> enumerator = v8::Local<v8::Function>::Cast(resul
t); | |
557 v8::Local<v8::Value> argv[] = { obj }; | |
558 v8::Local<v8::Value> propsObj; | |
559 if (!V8ScriptRunner::callInternalFunction(enumerator, v8::Local<v8::Obje
ct>::Cast(result), WTF_ARRAY_LENGTH(argv), argv, scriptState->isolate()).ToLocal
(&propsObj)) | |
560 return false; | |
561 | |
562 // Convert the results into an array of NPIdentifiers. | |
563 v8::Local<v8::Array> props = v8::Local<v8::Array>::Cast(propsObj); | |
564 *count = props->Length(); | |
565 *identifier = static_cast<NPIdentifier*>(calloc(*count, sizeof(NPIdentif
ier))); | |
566 for (uint32_t i = 0; i < *count; ++i) { | |
567 v8::Local<v8::Value> name; | |
568 if (!props->Get(scriptState->context(), v8::Integer::New(scriptState
->isolate(), i)).ToLocal(&name)) | |
569 return false; | |
570 (*identifier)[i] = getStringIdentifier(v8::Local<v8::String>::Cast(n
ame)); | |
571 } | |
572 return true; | |
573 } | |
574 | |
575 if (NP_CLASS_STRUCT_VERSION_HAS_ENUM(npObject->_class) && npObject->_class->
enumerate) | |
576 return npObject->_class->enumerate(npObject, identifier, count); | |
577 | |
578 return false; | |
579 } | |
580 | |
581 bool _NPN_Construct(NPP npp, NPObject* npObject, const NPVariant* arguments, uin
t32_t argumentCount, NPVariant* result) | |
582 { | |
583 if (!npObject) | |
584 return false; | |
585 | |
586 if (V8NPObject* object = npObjectToV8NPObject(npObject)) { | |
587 ScriptState* scriptState = mainWorldScriptState(v8::Isolate::GetCurrent(
), npObject); | |
588 if (!scriptState) | |
589 return false; | |
590 ScriptState::Scope scope(scriptState); | |
591 v8::TryCatch tryCatch(scriptState->isolate()); | |
592 | |
593 // Lookup the constructor function. | |
594 v8::Local<v8::Object> ctorObj = v8::Local<v8::Object>::New(scriptState->
isolate(), object->v8Object); | |
595 if (!ctorObj->IsFunction()) | |
596 return false; | |
597 | |
598 // Call the constructor. | |
599 v8::Local<v8::Value> resultObject; | |
600 v8::Local<v8::Function> ctor = v8::Local<v8::Function>::Cast(ctorObj); | |
601 if (ctor->IsNull()) | |
602 return false; | |
603 | |
604 LocalFrame* frame = object->rootObject->frame(); | |
605 ASSERT(frame); | |
606 OwnPtr<v8::Local<v8::Value>[]> argv = createValueListFromVariantArgs(scr
iptState->isolate(), arguments, argumentCount, npObject); | |
607 if (!V8ObjectConstructor::newInstanceInDocument(scriptState->isolate(),
ctor, argumentCount, argv.get(), frame ? frame->document() : 0).ToLocal(&resultO
bject)) | |
608 return false; | |
609 | |
610 convertV8ObjectToNPVariant(scriptState->isolate(), resultObject, npObjec
t, result); | |
611 return true; | |
612 } | |
613 | |
614 if (NP_CLASS_STRUCT_VERSION_HAS_CTOR(npObject->_class) && npObject->_class->
construct) | |
615 return npObject->_class->construct(npObject, arguments, argumentCount, r
esult); | |
616 | |
617 return false; | |
618 } | |
OLD | NEW |