/*
* Copyright (C) 2004, 2006 Apple Computer, Inc. All rights reserved.
* Copyright (C) 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 "NPV8Object.h"
#include "PlatformBridge.h"
#include "DOMWindow.h"
#include "Frame.h"
#include "OwnArrayPtr.h"
#include "PlatformString.h"
#include "ScriptController.h"
#include "UserGestureIndicator.h"
#include "V8GCController.h"
#include "V8Helpers.h"
#include "V8NPUtils.h"
#include "V8Proxy.h"
#include "WrapperTypeInfo.h"
#include "npruntime_impl.h"
#include "npruntime_priv.h"
#if PLATFORM(CHROMIUM)
#include <bindings/npruntime.h>
#else
#include "npruntime.h"
#endif
#include <stdio.h>
#include <wtf/StringExtras.h>
using namespace WebCore;
namespace WebCore {
WrapperTypeInfo* npObjectTypeInfo()
{
static WrapperTypeInfo typeInfo = { 0, 0, 0, 0 };
return &typeInfo;
}
// FIXME: Comments on why use malloc and free.
static NPObject* allocV8NPObject(NPP, NPClass*)
{
return static_cast<NPObject*>(malloc(sizeof(V8NPObject)));
}
static void freeV8NPObject(NPObject* npObject)
{
V8NPObject* v8NpObject = reinterpret_cast<V8NPObject*>(npObject);
#ifndef NDEBUG
V8GCController::unregisterGlobalHandle(v8NpObject, v8NpObject->v8Object);
#endif
v8NpObject->v8Object.Dispose();
free(v8NpObject);
}
static PassOwnArrayPtr<v8::Handle<v8::Value> > createValueListFromVariantArgs(const NPVariant* arguments, uint32_t argumentCount, NPObject* owner)
{
OwnArrayPtr<v8::Handle<v8::Value> > argv = adoptArrayPtr(new v8::Handle<v8::Value>[argumentCount]);
for (uint32_t index = 0; index < argumentCount; index++) {
const NPVariant* arg = &arguments[index];
argv[index] = convertNPVariantToV8Object(arg, owner);
}
return argv.release();
}
// Create an identifier (null terminated utf8 char*) from the NPIdentifier.
static v8::Local<v8::String> npIdentifierToV8Identifier(NPIdentifier name)
{
PrivateIdentifier* identifier = static_cast<PrivateIdentifier*>(name);
if (identifier->isString)
return v8::String::New(static_cast<const char*>(identifier->value.string));
char buffer[32];
snprintf(buffer, sizeof(buffer), "%d", identifier->value.number);
return v8::String::New(buffer);
}
NPObject* v8ObjectToNPObject(v8::Handle<v8::Object> object)
{
return reinterpret_cast<NPObject*>(object->GetPointerFromInternalField(v8DOMWrapperObjectIndex));
}
static NPClass V8NPObjectClass = { NP_CLASS_STRUCT_VERSION,
allocV8NPObject,
freeV8NPObject,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
// NPAPI's npruntime functions.
NPClass* npScriptObjectClass = &V8NPObjectClass;
NPObject* npCreateV8ScriptObject(NPP npp, v8::Handle<v8::Object> object, DOMWindow* root)
{
// Check to see if this object is already wrapped.
if (object->InternalFieldCount() == npObjectInternalFieldCount) {
WrapperTypeInfo* typeInfo = static_cast<WrapperTypeInfo*>(object->GetPointerFromInternalField(v8DOMWrapperTypeIndex));
if (typeInfo == npObjectTypeInfo()) {
NPObject* returnValue = v8ObjectToNPObject(object);
_NPN_RetainObject(returnValue);
return returnValue;
}
}
V8NPObject* v8npObject = reinterpret_cast<V8NPObject*>(_NPN_CreateObject(npp, &V8NPObjectClass));
v8npObject->v8Object = v8::Persistent<v8::Object>::New(object);
#ifndef NDEBUG
V8GCController::registerGlobalHandle(NPOBJECT, v8npObject, v8npObject->v8Object);
#endif
v8npObject->rootObject = root;
return reinterpret_cast<NPObject*>(v8npObject);
}
} // namespace WebCore
bool _NPN_Invoke(NPP npp, NPObject* npObject, NPIdentifier methodName, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result)
{
if (!npObject)
return false;
if (npObject->_class != npScriptObjectClass) {
if (npObject->_class->invoke)
return npObject->_class->invoke(npObject, methodName, arguments, argumentCount, result);
VOID_TO_NPVARIANT(*result);
return true;
}
V8NPObject* v8NpObject = reinterpret_cast<V8NPObject*>(npObject);
PrivateIdentifier* identifier = static_cast<PrivateIdentifier*>(methodName);
if (!identifier->isString)
return false;
if (!strcmp(identifier->value.string, "eval")) {
if (argumentCount != 1)
return false;
if (arguments[0].type != NPVariantType_String)
return false;
return _NPN_Evaluate(npp, npObject, const_cast<NPString*>(&arguments[0].value.stringValue), result);
}
v8::HandleScope handleScope;
// FIXME: should use the plugin's owner frame as the security context.
v8::Handle<v8::Context> context = toV8Context(npp, npObject);
if (context.IsEmpty())
return false;
v8::Context::Scope scope(context);
ExceptionCatcher exceptionCatcher;
v8::Handle<v8::Value> functionObject = v8NpObject->v8Object->Get(v8::String::New(identifier->value.string));
if (functionObject.IsEmpty() || functionObject->IsNull()) {
NULL_TO_NPVARIANT(*result);
return false;
}
if (functionObject->IsUndefined()) {
VOID_TO_NPVARIANT(*result);
return false;
}
V8Proxy* proxy = toV8Proxy(npObject);
ASSERT(proxy);
// Call the function object.
v8::Handle<v8::Function> function = v8::Handle<v8::Function>::Cast(functionObject);
OwnArrayPtr<v8::Handle<v8::Value> > argv = createValueListFromVariantArgs(arguments, argumentCount, npObject);
v8::Local<v8::Value> resultObject = proxy->callFunction(function, v8NpObject->v8Object, argumentCount, argv.get());
// If we had an error, return false. The spec is a little unclear here, but says "Returns true if the method was
// successfully invoked". If we get an error return value, was that successfully invoked?
if (resultObject.IsEmpty())
return false;
convertV8ObjectToNPVariant(resultObject, npObject, result);
return true;
}
// FIXME: Fix it same as _NPN_Invoke (HandleScope and such).
bool _NPN_InvokeDefault(NPP npp, NPObject* npObject, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result)
{
if (!npObject)
return false;
if (npObject->_class != npScriptObjectClass) {
if (npObject->_class->invokeDefault)
return npObject->_class->invokeDefault(npObject, arguments, argumentCount, result);
VOID_TO_NPVARIANT(*result);
return true;
}
V8NPObject* v8NpObject = reinterpret_cast<V8NPObject*>(npObject);
VOID_TO_NPVARIANT(*result);
v8::HandleScope handleScope;
v8::Handle<v8::Context> context = toV8Context(npp, npObject);
if (context.IsEmpty())
return false;
v8::Context::Scope scope(context);
ExceptionCatcher exceptionCatcher;
// Lookup the function object and call it.
v8::Handle<v8::Object> functionObject(v8NpObject->v8Object);
if (!functionObject->IsFunction())
return false;
v8::Local<v8::Value> resultObject;
v8::Handle<v8::Function> function(v8::Function::Cast(*functionObject));
if (!function->IsNull()) {
V8Proxy* proxy = toV8Proxy(npObject);
ASSERT(proxy);
OwnArrayPtr<v8::Handle<v8::Value> > argv = createValueListFromVariantArgs(arguments, argumentCount, npObject);
resultObject = proxy->callFunction(function, functionObject, argumentCount, argv.get());
}
// If we had an error, return false. The spec is a little unclear here, but says "Returns true if the method was
// successfully invoked". If we get an error return value, was that successfully invoked?
if (resultObject.IsEmpty())
return false;
convertV8ObjectToNPVariant(resultObject, npObject, result);
return true;
}
bool _NPN_Evaluate(NPP npp, NPObject* npObject, NPString* npScript, NPVariant* result)
{
bool popupsAllowed = PlatformBridge::popupsAllowed(npp);
return _NPN_EvaluateHelper(npp, popupsAllowed, npObject, npScript, result);
}
bool _NPN_EvaluateHelper(NPP npp, bool popupsAllowed, NPObject* npObject, NPString* npScript, NPVariant* result)
{
VOID_TO_NPVARIANT(*result);
if (!npObject)
return false;
if (npObject->_class != npScriptObjectClass)
return false;
v8::HandleScope handleScope;
v8::Handle<v8::Context> context = toV8Context(npp, npObject);
if (context.IsEmpty())
return false;
V8Proxy* proxy = toV8Proxy(npObject);
ASSERT(proxy);
v8::Context::Scope scope(context);
ExceptionCatcher exceptionCatcher;
String filename;
if (!popupsAllowed)
filename = "npscript";
// Set popupsAllowed flag to the current execution frame, so WebKit can get
// right gesture status for popups initiated from plugins.
Frame* frame = proxy->frame();
ASSERT(frame);
bool oldAllowPopups = frame->script()->allowPopupsFromPlugin();
frame->script()->setAllowPopupsFromPlugin(popupsAllowed);
String script = String::fromUTF8(npScript->UTF8Characters, npScript->UTF8Length);
v8::Local<v8::Value> v8result = proxy->evaluate(ScriptSourceCode(script, KURL(ParsedURLString, filename)), 0);
// Restore the old flag.
frame->script()->setAllowPopupsFromPlugin(oldAllowPopups);
if (v8result.IsEmpty())
return false;
convertV8ObjectToNPVariant(v8result, npObject, result);
return true;
}
bool _NPN_GetProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName, NPVariant* result)
{
if (!npObject)
return false;
if (npObject->_class == npScriptObjectClass) {
V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject);
v8::HandleScope handleScope;
v8::Handle<v8::Context> context = toV8Context(npp, npObject);
if (context.IsEmpty())
return false;
v8::Context::Scope scope(context);
ExceptionCatcher exceptionCatcher;
v8::Handle<v8::Object> obj(object->v8Object);
v8::Local<v8::Value> v8result = obj->Get(npIdentifierToV8Identifier(propertyName));
if (v8result.IsEmpty())
return false;
convertV8ObjectToNPVariant(v8result, npObject, result);
return true;
}
if (npObject->_class->hasProperty && npObject->_class->getProperty) {
if (npObject->_class->hasProperty(npObject, propertyName))
return npObject->_class->getProperty(npObject, propertyName, result);
}
VOID_TO_NPVARIANT(*result);
return false;
}
bool _NPN_SetProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName, const NPVariant* value)
{
if (!npObject)
return false;
if (npObject->_class == npScriptObjectClass) {
V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject);
v8::HandleScope handleScope;
v8::Handle<v8::Context> context = toV8Context(npp, npObject);
if (context.IsEmpty())
return false;
v8::Context::Scope scope(context);
ExceptionCatcher exceptionCatcher;
v8::Handle<v8::Object> obj(object->v8Object);
obj->Set(npIdentifierToV8Identifier(propertyName),
convertNPVariantToV8Object(value, object->rootObject->frame()->script()->windowScriptNPObject()));
return true;
}
if (npObject->_class->setProperty)
return npObject->_class->setProperty(npObject, propertyName, value);
return false;
}
bool _NPN_RemoveProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName)
{
if (!npObject)
return false;
if (npObject->_class != npScriptObjectClass)
return false;
V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject);
v8::HandleScope handleScope;
v8::Handle<v8::Context> context = toV8Context(npp, npObject);
if (context.IsEmpty())
return false;
v8::Context::Scope scope(context);
ExceptionCatcher exceptionCatcher;
v8::Handle<v8::Object> obj(object->v8Object);
// FIXME: Verify that setting to undefined is right.
obj->Set(npIdentifierToV8Identifier(propertyName), v8::Undefined());
return true;
}
bool _NPN_HasProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName)
{
if (!npObject)
return false;
if (npObject->_class == npScriptObjectClass) {
V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject);
v8::HandleScope handleScope;
v8::Handle<v8::Context> context = toV8Context(npp, npObject);
if (context.IsEmpty())
return false;
v8::Context::Scope scope(context);
ExceptionCatcher exceptionCatcher;
v8::Handle<v8::Object> obj(object->v8Object);
return obj->Has(npIdentifierToV8Identifier(propertyName));
}
if (npObject->_class->hasProperty)
return npObject->_class->hasProperty(npObject, propertyName);
return false;
}
bool _NPN_HasMethod(NPP npp, NPObject* npObject, NPIdentifier methodName)
{
if (!npObject)
return false;
if (npObject->_class == npScriptObjectClass) {
V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject);
v8::HandleScope handleScope;
v8::Handle<v8::Context> context = toV8Context(npp, npObject);
if (context.IsEmpty())
return false;
v8::Context::Scope scope(context);
ExceptionCatcher exceptionCatcher;
v8::Handle<v8::Object> obj(object->v8Object);
v8::Handle<v8::Value> prop = obj->Get(npIdentifierToV8Identifier(methodName));
return prop->IsFunction();
}
if (npObject->_class->hasMethod)
return npObject->_class->hasMethod(npObject, methodName);
return false;
}
void _NPN_SetException(NPObject* npObject, const NPUTF8 *message)
{
if (!npObject || npObject->_class != npScriptObjectClass) {
// We won't be able to find a proper scope for this exception, so just throw it.
// This is consistent with JSC, which throws a global exception all the time.
#if PLATFORM(ANDROID)
// However, if there isn't a v8 context, throw the error away as there really isn't anything useful to do with it.
if (v8::Context::InContext())
V8Proxy::throwError(V8Proxy::GeneralError, message);
#endif
return;
}
v8::HandleScope handleScope;
v8::Handle<v8::Context> context = toV8Context(0, npObject);
if (context.IsEmpty())
return;
v8::Context::Scope scope(context);
ExceptionCatcher exceptionCatcher;
V8Proxy::throwError(V8Proxy::GeneralError, message);
}
bool _NPN_Enumerate(NPP npp, NPObject* npObject, NPIdentifier** identifier, uint32_t* count)
{
if (!npObject)
return false;
if (npObject->_class == npScriptObjectClass) {
V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject);
v8::HandleScope handleScope;
v8::Handle<v8::Context> context = toV8Context(npp, npObject);
if (context.IsEmpty())
return false;
v8::Context::Scope scope(context);
ExceptionCatcher exceptionCatcher;
v8::Handle<v8::Object> obj(object->v8Object);
// FIXME: http://b/issue?id=1210340: Use a v8::Object::Keys() method when it exists, instead of evaluating javascript.
// FIXME: Figure out how to cache this helper function. Run a helper function that collects the properties
// on the object into an array.
const char enumeratorCode[] =
"(function (obj) {"
" var props = [];"
" for (var prop in obj) {"
" props[props.length] = prop;"
" }"
" return props;"
"});";
v8::Handle<v8::String> source = v8::String::New(enumeratorCode);
v8::Handle<v8::Script> script = v8::Script::Compile(source, 0);
v8::Handle<v8::Value> enumeratorObj = script->Run();
v8::Handle<v8::Function> enumerator = v8::Handle<v8::Function>::Cast(enumeratorObj);
v8::Handle<v8::Value> argv[] = { obj };
v8::Local<v8::Value> propsObj = enumerator->Call(v8::Handle<v8::Object>::Cast(enumeratorObj), ARRAYSIZE_UNSAFE(argv), argv);
if (propsObj.IsEmpty())
return false;
// Convert the results into an array of NPIdentifiers.
v8::Handle<v8::Array> props = v8::Handle<v8::Array>::Cast(propsObj);
*count = props->Length();
*identifier = static_cast<NPIdentifier*>(malloc(sizeof(NPIdentifier*) * *count));
for (uint32_t i = 0; i < *count; ++i) {
v8::Local<v8::Value> name = props->Get(v8::Integer::New(i));
(*identifier)[i] = getStringIdentifier(v8::Local<v8::String>::Cast(name));
}
return true;
}
if (NP_CLASS_STRUCT_VERSION_HAS_ENUM(npObject->_class) && npObject->_class->enumerate)
return npObject->_class->enumerate(npObject, identifier, count);
return false;
}
bool _NPN_Construct(NPP npp, NPObject* npObject, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result)
{
if (!npObject)
return false;
if (npObject->_class == npScriptObjectClass) {
V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject);
v8::HandleScope handleScope;
v8::Handle<v8::Context> context = toV8Context(npp, npObject);
if (context.IsEmpty())
return false;
v8::Context::Scope scope(context);
ExceptionCatcher exceptionCatcher;
// Lookup the constructor function.
v8::Handle<v8::Object> ctorObj(object->v8Object);
if (!ctorObj->IsFunction())
return false;
// Call the constructor.
v8::Local<v8::Value> resultObject;
v8::Handle<v8::Function> ctor(v8::Function::Cast(*ctorObj));
if (!ctor->IsNull()) {
V8Proxy* proxy = toV8Proxy(npObject);
ASSERT(proxy);
OwnArrayPtr<v8::Handle<v8::Value> > argv = createValueListFromVariantArgs(arguments, argumentCount, npObject);
resultObject = proxy->newInstance(ctor, argumentCount, argv.get());
}
if (resultObject.IsEmpty())
return false;
convertV8ObjectToNPVariant(resultObject, npObject, result);
return true;
}
if (NP_CLASS_STRUCT_VERSION_HAS_CTOR(npObject->_class) && npObject->_class->construct)
return npObject->_class->construct(npObject, arguments, argumentCount, result);
return false;
}