| /* |
| * Copyright (C) 2006, 2007, 2008, 2009 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| |
| #include "bindings/v8/V8NPObject.h" |
| |
| #include "V8HTMLAppletElement.h" |
| #include "V8HTMLEmbedElement.h" |
| #include "V8HTMLObjectElement.h" |
| #include "bindings/v8/NPV8Object.h" |
| #include "bindings/v8/UnsafePersistent.h" |
| #include "bindings/v8/V8Binding.h" |
| #include "bindings/v8/V8NPUtils.h" |
| #include "bindings/v8/V8ObjectConstructor.h" |
| #include "bindings/v8/npruntime_impl.h" |
| #include "bindings/v8/npruntime_priv.h" |
| #include "core/html/HTMLPlugInElement.h" |
| #include "wtf/OwnPtr.h" |
| |
| namespace WebCore { |
| |
| enum InvokeFunctionType { |
| InvokeMethod = 1, |
| InvokeConstruct = 2, |
| InvokeDefault = 3 |
| }; |
| |
| struct IdentifierRep { |
| int number() const { return m_isString ? 0 : m_value.m_number; } |
| const char* string() const { return m_isString ? m_value.m_string : 0; } |
| |
| union { |
| const char* m_string; |
| int m_number; |
| } m_value; |
| bool m_isString; |
| }; |
| |
| // FIXME: need comments. |
| // Params: holder could be HTMLEmbedElement or NPObject |
| static void npObjectInvokeImpl(const v8::FunctionCallbackInfo<v8::Value>& info, InvokeFunctionType functionId) |
| { |
| NPObject* npObject; |
| |
| WrapperWorldType currentWorldType = worldType(info.GetIsolate()); |
| // These three types are subtypes of HTMLPlugInElement. |
| if (V8HTMLAppletElement::hasInstance(info.Holder(), info.GetIsolate(), currentWorldType) || V8HTMLEmbedElement::hasInstance(info.Holder(), info.GetIsolate(), currentWorldType) |
| || V8HTMLObjectElement::hasInstance(info.Holder(), info.GetIsolate(), currentWorldType)) { |
| // The holder object is a subtype of HTMLPlugInElement. |
| HTMLPlugInElement* element; |
| if (V8HTMLAppletElement::hasInstance(info.Holder(), info.GetIsolate(), currentWorldType)) |
| element = V8HTMLAppletElement::toNative(info.Holder()); |
| else if (V8HTMLEmbedElement::hasInstance(info.Holder(), info.GetIsolate(), currentWorldType)) |
| element = V8HTMLEmbedElement::toNative(info.Holder()); |
| else |
| element = V8HTMLObjectElement::toNative(info.Holder()); |
| if (RefPtr<SharedPersistent<v8::Object> > wrapper = element->pluginWrapper()) { |
| v8::Isolate* isolate = v8::Isolate::GetCurrent(); |
| v8::HandleScope handleScope(isolate); |
| npObject = v8ObjectToNPObject(wrapper->newLocal(isolate)); |
| } else |
| npObject = 0; |
| } else { |
| // The holder object is not a subtype of HTMLPlugInElement, it must be an NPObject which has three |
| // internal fields. |
| if (info.Holder()->InternalFieldCount() != npObjectInternalFieldCount) { |
| throwError(v8ReferenceError, "NPMethod called on non-NPObject", info.GetIsolate()); |
| return; |
| } |
| |
| npObject = v8ObjectToNPObject(info.Holder()); |
| } |
| |
| // Verify that our wrapper wasn't using a NPObject which has already been deleted. |
| if (!npObject || !_NPN_IsAlive(npObject)) { |
| throwError(v8ReferenceError, "NPObject deleted", info.GetIsolate()); |
| return; |
| } |
| |
| // Wrap up parameters. |
| int numArgs = info.Length(); |
| OwnPtr<NPVariant[]> npArgs = adoptArrayPtr(new NPVariant[numArgs]); |
| |
| for (int i = 0; i < numArgs; i++) |
| convertV8ObjectToNPVariant(info[i], npObject, &npArgs[i], info.GetIsolate()); |
| |
| NPVariant result; |
| VOID_TO_NPVARIANT(result); |
| |
| bool retval = true; |
| switch (functionId) { |
| case InvokeMethod: |
| if (npObject->_class->invoke) { |
| v8::Handle<v8::String> functionName = v8::Handle<v8::String>::Cast(info.Data()); |
| NPIdentifier identifier = getStringIdentifier(functionName); |
| retval = npObject->_class->invoke(npObject, identifier, npArgs.get(), numArgs, &result); |
| } |
| break; |
| case InvokeConstruct: |
| if (npObject->_class->construct) |
| retval = npObject->_class->construct(npObject, npArgs.get(), numArgs, &result); |
| break; |
| case InvokeDefault: |
| if (npObject->_class->invokeDefault) |
| retval = npObject->_class->invokeDefault(npObject, npArgs.get(), numArgs, &result); |
| break; |
| default: |
| break; |
| } |
| |
| if (!retval) |
| throwError(v8GeneralError, "Error calling method on NPObject.", info.GetIsolate()); |
| |
| for (int i = 0; i < numArgs; i++) |
| _NPN_ReleaseVariantValue(&npArgs[i]); |
| |
| // Unwrap return values. |
| v8::Handle<v8::Value> returnValue; |
| if (_NPN_IsAlive(npObject)) |
| returnValue = convertNPVariantToV8Object(&result, npObject, info.GetIsolate()); |
| _NPN_ReleaseVariantValue(&result); |
| |
| v8SetReturnValue(info, returnValue); |
| } |
| |
| |
| void npObjectMethodHandler(const v8::FunctionCallbackInfo<v8::Value>& info) |
| { |
| return npObjectInvokeImpl(info, InvokeMethod); |
| } |
| |
| |
| void npObjectInvokeDefaultHandler(const v8::FunctionCallbackInfo<v8::Value>& info) |
| { |
| if (info.IsConstructCall()) { |
| npObjectInvokeImpl(info, InvokeConstruct); |
| return; |
| } |
| |
| npObjectInvokeImpl(info, InvokeDefault); |
| } |
| |
| class V8NPTemplateMap { |
| public: |
| // NPIdentifier is PrivateIdentifier*. |
| typedef HashMap<PrivateIdentifier*, UnsafePersistent<v8::FunctionTemplate> > MapType; |
| |
| UnsafePersistent<v8::FunctionTemplate> get(PrivateIdentifier* key) |
| { |
| return m_map.get(key); |
| } |
| |
| void set(PrivateIdentifier* key, v8::Handle<v8::FunctionTemplate> handle) |
| { |
| ASSERT(!m_map.contains(key)); |
| v8::Persistent<v8::FunctionTemplate> wrapper(m_isolate, handle); |
| wrapper.SetWeak(key, &setWeakCallback); |
| m_map.set(key, UnsafePersistent<v8::FunctionTemplate>(wrapper)); |
| } |
| |
| static V8NPTemplateMap& sharedInstance(v8::Isolate* isolate) |
| { |
| DEFINE_STATIC_LOCAL(V8NPTemplateMap, map, (isolate)); |
| ASSERT(isolate == map.m_isolate); |
| return map; |
| } |
| |
| private: |
| explicit V8NPTemplateMap(v8::Isolate* isolate) |
| : m_isolate(isolate) |
| { |
| } |
| |
| void clear(PrivateIdentifier* key) |
| { |
| MapType::iterator it = m_map.find(key); |
| ASSERT_WITH_SECURITY_IMPLICATION(it != m_map.end()); |
| it->value.dispose(); |
| m_map.remove(it); |
| } |
| |
| static void setWeakCallback(const v8::WeakCallbackData<v8::FunctionTemplate, PrivateIdentifier>& data) |
| { |
| V8NPTemplateMap::sharedInstance(data.GetIsolate()).clear(data.GetParameter()); |
| } |
| |
| MapType m_map; |
| v8::Isolate* m_isolate; |
| }; |
| |
| static v8::Handle<v8::Value> npObjectGetProperty(v8::Local<v8::Object> self, NPIdentifier identifier, v8::Local<v8::Value> key, v8::Isolate* isolate) |
| { |
| NPObject* npObject = v8ObjectToNPObject(self); |
| |
| // Verify that our wrapper wasn't using a NPObject which |
| // has already been deleted. |
| if (!npObject || !_NPN_IsAlive(npObject)) |
| return throwError(v8ReferenceError, "NPObject deleted", isolate); |
| |
| |
| if (npObject->_class->hasProperty && npObject->_class->getProperty && npObject->_class->hasProperty(npObject, identifier)) { |
| if (!_NPN_IsAlive(npObject)) |
| return throwError(v8ReferenceError, "NPObject deleted", isolate); |
| |
| NPVariant result; |
| VOID_TO_NPVARIANT(result); |
| if (!npObject->_class->getProperty(npObject, identifier, &result)) |
| return v8Undefined(); |
| |
| v8::Handle<v8::Value> returnValue; |
| if (_NPN_IsAlive(npObject)) |
| returnValue = convertNPVariantToV8Object(&result, npObject, isolate); |
| _NPN_ReleaseVariantValue(&result); |
| return returnValue; |
| |
| } |
| |
| if (!_NPN_IsAlive(npObject)) |
| return throwError(v8ReferenceError, "NPObject deleted", isolate); |
| |
| if (key->IsString() && npObject->_class->hasMethod && npObject->_class->hasMethod(npObject, identifier)) { |
| if (!_NPN_IsAlive(npObject)) |
| return throwError(v8ReferenceError, "NPObject deleted", isolate); |
| |
| PrivateIdentifier* id = static_cast<PrivateIdentifier*>(identifier); |
| UnsafePersistent<v8::FunctionTemplate> functionTemplate = V8NPTemplateMap::sharedInstance(isolate).get(id); |
| // FunctionTemplate caches function for each context. |
| v8::Local<v8::Function> v8Function; |
| // Cache templates using identifier as the key. |
| if (functionTemplate.isEmpty()) { |
| // Create a new template. |
| v8::Local<v8::FunctionTemplate> temp = v8::FunctionTemplate::New(isolate); |
| temp->SetCallHandler(npObjectMethodHandler, key); |
| V8NPTemplateMap::sharedInstance(isolate).set(id, temp); |
| v8Function = temp->GetFunction(); |
| } else { |
| v8Function = functionTemplate.newLocal(isolate)->GetFunction(); |
| } |
| v8Function->SetName(v8::Handle<v8::String>::Cast(key)); |
| return v8Function; |
| } |
| |
| return v8Undefined(); |
| } |
| |
| void npObjectNamedPropertyGetter(v8::Local<v8::String> name, const v8::PropertyCallbackInfo<v8::Value>& info) |
| { |
| NPIdentifier identifier = getStringIdentifier(name); |
| v8SetReturnValue(info, npObjectGetProperty(info.Holder(), identifier, name, info.GetIsolate())); |
| } |
| |
| void npObjectIndexedPropertyGetter(uint32_t index, const v8::PropertyCallbackInfo<v8::Value>& info) |
| { |
| NPIdentifier identifier = _NPN_GetIntIdentifier(index); |
| v8SetReturnValue(info, npObjectGetProperty(info.Holder(), identifier, v8::Number::New(info.GetIsolate(), index), info.GetIsolate())); |
| } |
| |
| void npObjectGetNamedProperty(v8::Local<v8::Object> self, v8::Local<v8::String> name, const v8::PropertyCallbackInfo<v8::Value>& info) |
| { |
| NPIdentifier identifier = getStringIdentifier(name); |
| v8SetReturnValue(info, npObjectGetProperty(self, identifier, name, info.GetIsolate())); |
| } |
| |
| void npObjectGetIndexedProperty(v8::Local<v8::Object> self, uint32_t index, const v8::PropertyCallbackInfo<v8::Value>& info) |
| { |
| NPIdentifier identifier = _NPN_GetIntIdentifier(index); |
| v8SetReturnValue(info, npObjectGetProperty(self, identifier, v8::Number::New(info.GetIsolate(), index), info.GetIsolate())); |
| } |
| |
| void npObjectQueryProperty(v8::Local<v8::String> name, const v8::PropertyCallbackInfo<v8::Integer>& info) |
| { |
| NPIdentifier identifier = getStringIdentifier(name); |
| if (npObjectGetProperty(info.Holder(), identifier, name, info.GetIsolate()).IsEmpty()) |
| return; |
| v8SetReturnValueInt(info, 0); |
| } |
| |
| static v8::Handle<v8::Value> npObjectSetProperty(v8::Local<v8::Object> self, NPIdentifier identifier, v8::Local<v8::Value> value, v8::Isolate* isolate) |
| { |
| NPObject* npObject = v8ObjectToNPObject(self); |
| |
| // Verify that our wrapper wasn't using a NPObject which has already been deleted. |
| if (!npObject || !_NPN_IsAlive(npObject)) { |
| throwError(v8ReferenceError, "NPObject deleted", isolate); |
| return value; // Intercepted, but an exception was thrown. |
| } |
| |
| if (npObject->_class->hasProperty && npObject->_class->setProperty && npObject->_class->hasProperty(npObject, identifier)) { |
| if (!_NPN_IsAlive(npObject)) |
| return throwError(v8ReferenceError, "NPObject deleted", isolate); |
| |
| NPVariant npValue; |
| VOID_TO_NPVARIANT(npValue); |
| convertV8ObjectToNPVariant(value, npObject, &npValue, isolate); |
| bool success = npObject->_class->setProperty(npObject, identifier, &npValue); |
| _NPN_ReleaseVariantValue(&npValue); |
| if (success) |
| return value; // Intercept the call. |
| } |
| return v8Undefined(); |
| } |
| |
| |
| void npObjectNamedPropertySetter(v8::Local<v8::String> name, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<v8::Value>& info) |
| { |
| NPIdentifier identifier = getStringIdentifier(name); |
| v8SetReturnValue(info, npObjectSetProperty(info.Holder(), identifier, value, info.GetIsolate())); |
| } |
| |
| |
| void npObjectIndexedPropertySetter(uint32_t index, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<v8::Value>& info) |
| { |
| NPIdentifier identifier = _NPN_GetIntIdentifier(index); |
| v8SetReturnValue(info, npObjectSetProperty(info.Holder(), identifier, value, info.GetIsolate())); |
| } |
| |
| void npObjectSetNamedProperty(v8::Local<v8::Object> self, v8::Local<v8::String> name, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<v8::Value>& info) |
| { |
| NPIdentifier identifier = getStringIdentifier(name); |
| v8SetReturnValue(info, npObjectSetProperty(self, identifier, value, info.GetIsolate())); |
| } |
| |
| void npObjectSetIndexedProperty(v8::Local<v8::Object> self, uint32_t index, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<v8::Value>& info) |
| { |
| NPIdentifier identifier = _NPN_GetIntIdentifier(index); |
| v8SetReturnValue(info, npObjectSetProperty(self, identifier, value, info.GetIsolate())); |
| } |
| |
| void npObjectPropertyEnumerator(const v8::PropertyCallbackInfo<v8::Array>& info, bool namedProperty) |
| { |
| NPObject* npObject = v8ObjectToNPObject(info.Holder()); |
| |
| // Verify that our wrapper wasn't using a NPObject which |
| // has already been deleted. |
| if (!npObject || !_NPN_IsAlive(npObject)) |
| throwError(v8ReferenceError, "NPObject deleted", info.GetIsolate()); |
| |
| if (NP_CLASS_STRUCT_VERSION_HAS_ENUM(npObject->_class) && npObject->_class->enumerate) { |
| uint32_t count; |
| NPIdentifier* identifiers; |
| if (npObject->_class->enumerate(npObject, &identifiers, &count)) { |
| v8::Handle<v8::Array> properties = v8::Array::New(info.GetIsolate(), count); |
| for (uint32_t i = 0; i < count; ++i) { |
| IdentifierRep* identifier = static_cast<IdentifierRep*>(identifiers[i]); |
| if (namedProperty) |
| properties->Set(v8::Integer::New(i, info.GetIsolate()), v8AtomicString(info.GetIsolate(), identifier->string())); |
| else |
| properties->Set(v8::Integer::New(i, info.GetIsolate()), v8::Integer::New(identifier->number(), info.GetIsolate())); |
| } |
| |
| v8SetReturnValue(info, properties); |
| return; |
| } |
| } |
| } |
| |
| void npObjectNamedPropertyEnumerator(const v8::PropertyCallbackInfo<v8::Array>& info) |
| { |
| npObjectPropertyEnumerator(info, true); |
| } |
| |
| void npObjectIndexedPropertyEnumerator(const v8::PropertyCallbackInfo<v8::Array>& info) |
| { |
| npObjectPropertyEnumerator(info, false); |
| } |
| |
| static DOMWrapperMap<NPObject>& staticNPObjectMap() |
| { |
| DEFINE_STATIC_LOCAL(DOMWrapperMap<NPObject>, npObjectMap, (v8::Isolate::GetCurrent())); |
| return npObjectMap; |
| } |
| |
| template<> |
| inline void DOMWrapperMap<NPObject>::setWeakCallback(const v8::WeakCallbackData<v8::Object, DOMWrapperMap<NPObject> >& data) |
| { |
| NPObject* npObject = static_cast<NPObject*>(toNative(data.GetValue())); |
| |
| ASSERT(npObject); |
| ASSERT(staticNPObjectMap().containsKeyAndValue(npObject, data.GetValue())); |
| |
| // Must remove from our map before calling _NPN_ReleaseObject(). _NPN_ReleaseObject can |
| // call forgetV8ObjectForNPObject, which uses the table as well. |
| staticNPObjectMap().removeAndDispose(npObject); |
| |
| if (_NPN_IsAlive(npObject)) |
| _NPN_ReleaseObject(npObject); |
| } |
| |
| v8::Local<v8::Object> createV8ObjectForNPObject(NPObject* object, NPObject* root, v8::Isolate* isolate) |
| { |
| static v8::Eternal<v8::FunctionTemplate> npObjectDesc; |
| |
| ASSERT(isolate->InContext()); |
| |
| // If this is a v8 object, just return it. |
| V8NPObject* v8NPObject = npObjectToV8NPObject(object); |
| if (v8NPObject) |
| return v8::Local<v8::Object>::New(isolate, v8NPObject->v8Object); |
| |
| // If we've already wrapped this object, just return it. |
| v8::Handle<v8::Object> wrapper = staticNPObjectMap().newLocal(object, isolate); |
| if (!wrapper.IsEmpty()) |
| return wrapper; |
| |
| // FIXME: we should create a Wrapper type as a subclass of JSObject. It has two internal fields, field 0 is the wrapped |
| // pointer, and field 1 is the type. There should be an api function that returns unused type id. The same Wrapper type |
| // can be used by DOM bindings. |
| if (npObjectDesc.IsEmpty()) { |
| v8::Local<v8::FunctionTemplate> templ = v8::FunctionTemplate::New(isolate); |
| templ->InstanceTemplate()->SetInternalFieldCount(npObjectInternalFieldCount); |
| templ->InstanceTemplate()->SetNamedPropertyHandler(npObjectNamedPropertyGetter, npObjectNamedPropertySetter, npObjectQueryProperty, 0, npObjectNamedPropertyEnumerator); |
| templ->InstanceTemplate()->SetIndexedPropertyHandler(npObjectIndexedPropertyGetter, npObjectIndexedPropertySetter, 0, 0, npObjectIndexedPropertyEnumerator); |
| templ->InstanceTemplate()->SetCallAsFunctionHandler(npObjectInvokeDefaultHandler); |
| npObjectDesc.Set(isolate, templ); |
| } |
| |
| // FIXME: Move staticNPObjectMap() to DOMDataStore. |
| // Use V8DOMWrapper::createWrapper() and |
| // V8DOMWrapper::associateObjectWithWrapper() |
| // to create a wrapper object. |
| v8::Handle<v8::Function> v8Function = npObjectDesc.Get(isolate)->GetFunction(); |
| v8::Local<v8::Object> value = V8ObjectConstructor::newInstance(v8Function); |
| if (value.IsEmpty()) |
| return value; |
| |
| V8DOMWrapper::setNativeInfo(value, npObjectTypeInfo(), object); |
| |
| // KJS retains the object as part of its wrapper (see Bindings::CInstance). |
| _NPN_RetainObject(object); |
| _NPN_RegisterObject(object, root); |
| |
| WrapperConfiguration configuration = buildWrapperConfiguration(object, WrapperConfiguration::Dependent); |
| staticNPObjectMap().set(object, value, configuration); |
| ASSERT(V8DOMWrapper::maybeDOMWrapper(value)); |
| return value; |
| } |
| |
| void forgetV8ObjectForNPObject(NPObject* object) |
| { |
| v8::Isolate* isolate = v8::Isolate::GetCurrent(); |
| v8::HandleScope scope(isolate); |
| v8::Handle<v8::Object> wrapper = staticNPObjectMap().newLocal(object, isolate); |
| if (!wrapper.IsEmpty()) { |
| V8DOMWrapper::clearNativeInfo(wrapper, npObjectTypeInfo()); |
| staticNPObjectMap().removeAndDispose(object); |
| _NPN_ReleaseObject(object); |
| } |
| } |
| |
| // This is the same as 'forgetV8ObjectForNPObject', except that it |
| // doesn't clear a back reference to the NPObject from the wrapper. |
| void dropV8WrapperForNPObject(NPObject* object) |
| { |
| v8::Isolate* isolate = v8::Isolate::GetCurrent(); |
| v8::HandleScope scope(isolate); |
| v8::Handle<v8::Object> wrapper = staticNPObjectMap().newLocal(object, isolate); |
| if (!wrapper.IsEmpty()) { |
| staticNPObjectMap().removeAndDispose(object); |
| _NPN_ReleaseObject(object); |
| } |
| } |
| |
| } // namespace WebCore |