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/*
* Copyright (C) 2004-2019 Apple 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 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 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"
#if ENABLE(NETSCAPE_PLUGIN_API)
#include "NP_jsobject.h"
#include "IdentifierRep.h"
#include "JSDOMBinding.h"
#include "c_instance.h"
#include "c_utility.h"
#include "npruntime_priv.h"
#include "runtime_root.h"
#include <JavaScriptCore/CatchScope.h>
#include <JavaScriptCore/Completion.h>
#include <JavaScriptCore/Error.h>
#include <JavaScriptCore/JSGlobalObject.h>
#include <JavaScriptCore/JSLock.h>
#include <JavaScriptCore/PropertyNameArray.h>
#include <JavaScriptCore/SourceCode.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/text/WTFString.h>
#pragma GCC visibility push(default)
#include "npruntime_impl.h"
#pragma GCC visibility pop
namespace JSC {
using namespace Bindings;
using namespace WebCore;
class ObjectMap {
public:
NPObject* get(RootObject* rootObject, JSObject* jsObject)
{
return m_map.get(rootObject).get(jsObject);
}
void add(RootObject* rootObject, JSObject* jsObject, NPObject* npObject)
{
HashMap<RootObject*, JSToNPObjectMap>::iterator iter = m_map.find(rootObject);
if (iter == m_map.end()) {
rootObject->addInvalidationCallback(&m_invalidationCallback);
iter = m_map.add(rootObject, JSToNPObjectMap()).iterator;
}
ASSERT(iter->value.find(jsObject) == iter->value.end());
iter->value.add(jsObject, npObject);
}
void remove(RootObject* rootObject)
{
ASSERT(m_map.contains(rootObject));
m_map.remove(rootObject);
}
void remove(RootObject* rootObject, JSObject* jsObject)
{
HashMap<RootObject*, JSToNPObjectMap>::iterator iter = m_map.find(rootObject);
ASSERT(iter != m_map.end());
ASSERT(iter->value.find(jsObject) != iter->value.end());
iter->value.remove(jsObject);
}
private:
struct RootObjectInvalidationCallback : public RootObject::InvalidationCallback {
void operator()(RootObject*) override;
};
RootObjectInvalidationCallback m_invalidationCallback;
// JSObjects are protected by RootObject.
typedef HashMap<JSObject*, NPObject*> JSToNPObjectMap;
HashMap<RootObject*, JSToNPObjectMap> m_map;
};
static ObjectMap& objectMap()
{
static NeverDestroyed<ObjectMap> map;
return map;
}
void ObjectMap::RootObjectInvalidationCallback::operator()(RootObject* rootObject)
{
objectMap().remove(rootObject);
}
static void getListFromVariantArgs(JSGlobalObject* lexicalGlobalObject, const NPVariant* args, unsigned argCount, RootObject* rootObject, MarkedArgumentBuffer& aList)
{
for (unsigned i = 0; i < argCount; ++i)
aList.append(convertNPVariantToValue(lexicalGlobalObject, &args[i], rootObject));
}
static NPObject* jsAllocate(NPP, NPClass*)
{
return static_cast<NPObject*>(malloc(sizeof(JavaScriptObject)));
}
static void jsDeallocate(NPObject* npObj)
{
JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(npObj);
if (obj->rootObject && obj->rootObject->isValid()) {
objectMap().remove(obj->rootObject, obj->imp);
obj->rootObject->gcUnprotect(obj->imp);
}
if (obj->rootObject)
obj->rootObject->deref();
free(obj);
}
static NPClass javascriptClass = { 1, jsAllocate, jsDeallocate, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
static NPClass noScriptClass = { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
extern "C" {
NPClass* NPScriptObjectClass = &javascriptClass;
static NPClass* NPNoScriptObjectClass = &noScriptClass;
NPObject* _NPN_CreateScriptObject(NPP npp, JSObject* imp, RefPtr<RootObject>&& rootObject)
{
if (NPObject* object = objectMap().get(rootObject.get(), imp))
return _NPN_RetainObject(object);
JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(_NPN_CreateObject(npp, NPScriptObjectClass));
obj->rootObject = rootObject.leakRef();
if (obj->rootObject) {
obj->rootObject->gcProtect(imp);
objectMap().add(obj->rootObject, imp, reinterpret_cast<NPObject*>(obj));
}
obj->imp = imp;
return reinterpret_cast<NPObject*>(obj);
}
NPObject* _NPN_CreateNoScriptObject(void)
{
return _NPN_CreateObject(0, NPNoScriptObjectClass);
}
bool _NPN_InvokeDefault(NPP, NPObject* o, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
if (o->_class == NPScriptObjectClass) {
JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o);
VOID_TO_NPVARIANT(*result);
// Lookup the function object.
RootObject* rootObject = obj->rootObject;
if (!rootObject || !rootObject->isValid())
return false;
auto globalObject = rootObject->globalObject();
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
auto scope = DECLARE_CATCH_SCOPE(vm);
JSGlobalObject* lexicalGlobalObject = globalObject;
// Call the function object.
JSValue function = obj->imp;
auto callData = getCallData(vm, function);
if (callData.type == CallData::Type::None)
return false;
MarkedArgumentBuffer argList;
getListFromVariantArgs(lexicalGlobalObject, args, argCount, rootObject, argList);
RELEASE_ASSERT(!argList.hasOverflowed());
JSValue resultV = JSC::call(lexicalGlobalObject, function, callData, function, argList);
// Convert and return the result of the function call.
convertValueToNPVariant(lexicalGlobalObject, resultV, result);
scope.clearException();
return true;
}
if (o->_class->invokeDefault)
return o->_class->invokeDefault(o, args, argCount, result);
VOID_TO_NPVARIANT(*result);
return true;
}
bool _NPN_Invoke(NPP npp, NPObject* o, NPIdentifier methodName, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
if (o->_class == NPScriptObjectClass) {
JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o);
IdentifierRep* i = static_cast<IdentifierRep*>(methodName);
if (!i->isString())
return false;
// Special case the "eval" method.
if (methodName == _NPN_GetStringIdentifier("eval")) {
if (argCount != 1)
return false;
if (args[0].type != NPVariantType_String)
return false;
return _NPN_Evaluate(npp, o, const_cast<NPString*>(&args[0].value.stringValue), result);
}
// Look up the function object.
RootObject* rootObject = obj->rootObject;
if (!rootObject || !rootObject->isValid())
return false;
auto globalObject = rootObject->globalObject();
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
auto scope = DECLARE_CATCH_SCOPE(vm);
JSGlobalObject* lexicalGlobalObject = globalObject;
JSValue function = obj->imp->get(lexicalGlobalObject, identifierFromNPIdentifier(lexicalGlobalObject, i->string()));
auto callData = getCallData(vm, function);
if (callData.type == CallData::Type::None)
return false;
// Call the function object.
MarkedArgumentBuffer argList;
getListFromVariantArgs(lexicalGlobalObject, args, argCount, rootObject, argList);
RELEASE_ASSERT(!argList.hasOverflowed());
JSValue resultV = JSC::call(lexicalGlobalObject, function, callData, obj->imp, argList);
// Convert and return the result of the function call.
convertValueToNPVariant(lexicalGlobalObject, resultV, result);
scope.clearException();
return true;
}
if (o->_class->invoke)
return o->_class->invoke(o, methodName, args, argCount, result);
VOID_TO_NPVARIANT(*result);
return true;
}
bool _NPN_Evaluate(NPP, NPObject* o, NPString* s, NPVariant* variant)
{
if (o->_class == NPScriptObjectClass) {
JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o);
RootObject* rootObject = obj->rootObject;
if (!rootObject || !rootObject->isValid())
return false;
auto globalObject = rootObject->globalObject();
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
auto scope = DECLARE_CATCH_SCOPE(vm);
JSGlobalObject* lexicalGlobalObject = globalObject;
String scriptString = convertNPStringToUTF16(s);
JSValue returnValue = JSC::evaluate(lexicalGlobalObject, JSC::makeSource(scriptString, { }), JSC::JSValue());
convertValueToNPVariant(lexicalGlobalObject, returnValue, variant);
scope.clearException();
return true;
}
VOID_TO_NPVARIANT(*variant);
return false;
}
bool _NPN_GetProperty(NPP, NPObject* o, NPIdentifier propertyName, NPVariant* variant)
{
if (o->_class == NPScriptObjectClass) {
JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o);
RootObject* rootObject = obj->rootObject;
if (!rootObject || !rootObject->isValid())
return false;
auto globalObject = rootObject->globalObject();
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
auto scope = DECLARE_CATCH_SCOPE(vm);
JSGlobalObject* lexicalGlobalObject = globalObject;
IdentifierRep* i = static_cast<IdentifierRep*>(propertyName);
JSValue result;
if (i->isString())
result = obj->imp->get(lexicalGlobalObject, identifierFromNPIdentifier(lexicalGlobalObject, i->string()));
else
result = obj->imp->get(lexicalGlobalObject, static_cast<uint32_t>(i->number()));
convertValueToNPVariant(lexicalGlobalObject, result, variant);
scope.clearException();
return true;
}
if (o->_class->hasProperty && o->_class->getProperty) {
if (o->_class->hasProperty(o, propertyName))
return o->_class->getProperty(o, propertyName, variant);
return false;
}
VOID_TO_NPVARIANT(*variant);
return false;
}
bool _NPN_SetProperty(NPP, NPObject* o, NPIdentifier propertyName, const NPVariant* variant)
{
if (o->_class == NPScriptObjectClass) {
JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o);
RootObject* rootObject = obj->rootObject;
if (!rootObject || !rootObject->isValid())
return false;
auto globalObject = rootObject->globalObject();
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
auto scope = DECLARE_CATCH_SCOPE(vm);
JSGlobalObject* lexicalGlobalObject = globalObject;
IdentifierRep* i = static_cast<IdentifierRep*>(propertyName);
if (i->isString()) {
PutPropertySlot slot(obj->imp);
obj->imp->methodTable(vm)->put(obj->imp, lexicalGlobalObject, identifierFromNPIdentifier(lexicalGlobalObject, i->string()), convertNPVariantToValue(lexicalGlobalObject, variant, rootObject), slot);
} else
obj->imp->methodTable(vm)->putByIndex(obj->imp, lexicalGlobalObject, i->number(), convertNPVariantToValue(lexicalGlobalObject, variant, rootObject), false);
scope.clearException();
return true;
}
if (o->_class->setProperty)
return o->_class->setProperty(o, propertyName, variant);
return false;
}
bool _NPN_RemoveProperty(NPP, NPObject* o, NPIdentifier propertyName)
{
if (o->_class == NPScriptObjectClass) {
JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o);
RootObject* rootObject = obj->rootObject;
if (!rootObject || !rootObject->isValid())
return false;
auto globalObject = rootObject->globalObject();
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
auto scope = DECLARE_CATCH_SCOPE(vm);
JSGlobalObject* lexicalGlobalObject = globalObject;
IdentifierRep* i = static_cast<IdentifierRep*>(propertyName);
if (i->isString()) {
if (!obj->imp->hasProperty(lexicalGlobalObject, identifierFromNPIdentifier(lexicalGlobalObject, i->string()))) {
scope.clearException();
return false;
}
} else {
if (!obj->imp->hasProperty(lexicalGlobalObject, static_cast<uint32_t>(i->number()))) {
scope.clearException();
return false;
}
}
if (i->isString())
JSCell::deleteProperty(obj->imp, lexicalGlobalObject, identifierFromNPIdentifier(lexicalGlobalObject, i->string()));
else
obj->imp->methodTable(vm)->deletePropertyByIndex(obj->imp, lexicalGlobalObject, i->number());
scope.clearException();
return true;
}
return false;
}
bool _NPN_HasProperty(NPP, NPObject* o, NPIdentifier propertyName)
{
if (o->_class == NPScriptObjectClass) {
JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o);
RootObject* rootObject = obj->rootObject;
if (!rootObject || !rootObject->isValid())
return false;
auto globalObject = rootObject->globalObject();
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
auto scope = DECLARE_CATCH_SCOPE(vm);
JSGlobalObject* lexicalGlobalObject = globalObject;
IdentifierRep* i = static_cast<IdentifierRep*>(propertyName);
if (i->isString()) {
bool result = obj->imp->hasProperty(lexicalGlobalObject, identifierFromNPIdentifier(lexicalGlobalObject, i->string()));
scope.clearException();
return result;
}
bool result = obj->imp->hasProperty(lexicalGlobalObject, static_cast<uint32_t>(i->number()));
scope.clearException();
return result;
}
if (o->_class->hasProperty)
return o->_class->hasProperty(o, propertyName);
return false;
}
bool _NPN_HasMethod(NPP, NPObject* o, NPIdentifier methodName)
{
if (o->_class == NPScriptObjectClass) {
JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o);
IdentifierRep* i = static_cast<IdentifierRep*>(methodName);
if (!i->isString())
return false;
RootObject* rootObject = obj->rootObject;
if (!rootObject || !rootObject->isValid())
return false;
auto globalObject = rootObject->globalObject();
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
auto scope = DECLARE_CATCH_SCOPE(vm);
JSGlobalObject* lexicalGlobalObject = globalObject;
JSValue func = obj->imp->get(lexicalGlobalObject, identifierFromNPIdentifier(lexicalGlobalObject, i->string()));
scope.clearException();
return !func.isUndefined();
}
if (o->_class->hasMethod)
return o->_class->hasMethod(o, methodName);
return false;
}
void _NPN_SetException(NPObject*, const NPUTF8* message)
{
// Ignoring the NPObject param is consistent with the Mozilla implementation.
String exception(message);
CInstance::setGlobalException(exception);
}
bool _NPN_Enumerate(NPP, NPObject* o, NPIdentifier** identifier, uint32_t* count)
{
if (o->_class == NPScriptObjectClass) {
JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o);
RootObject* rootObject = obj->rootObject;
if (!rootObject || !rootObject->isValid())
return false;
auto globalObject = rootObject->globalObject();
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
auto scope = DECLARE_CATCH_SCOPE(vm);
JSGlobalObject* lexicalGlobalObject = globalObject;
PropertyNameArray propertyNames(vm, PropertyNameMode::Strings, PrivateSymbolMode::Exclude);
obj->imp->methodTable(vm)->getPropertyNames(obj->imp, lexicalGlobalObject, propertyNames, EnumerationMode());
unsigned size = static_cast<unsigned>(propertyNames.size());
// FIXME: This should really call NPN_MemAlloc but that's in WebKit
NPIdentifier* identifiers = static_cast<NPIdentifier*>(malloc(sizeof(NPIdentifier) * size));
for (unsigned i = 0; i < size; ++i)
identifiers[i] = _NPN_GetStringIdentifier(propertyNames[i].string().utf8().data());
*identifier = identifiers;
*count = size;
scope.clearException();
return true;
}
if (NP_CLASS_STRUCT_VERSION_HAS_ENUM(o->_class) && o->_class->enumerate)
return o->_class->enumerate(o, identifier, count);
return false;
}
bool _NPN_Construct(NPP, NPObject* o, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
if (o->_class == NPScriptObjectClass) {
JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o);
VOID_TO_NPVARIANT(*result);
// Lookup the constructor object.
RootObject* rootObject = obj->rootObject;
if (!rootObject || !rootObject->isValid())
return false;
auto globalObject = rootObject->globalObject();
VM& vm = globalObject->vm();
JSLockHolder lock(vm);
auto scope = DECLARE_CATCH_SCOPE(vm);
JSGlobalObject* lexicalGlobalObject = globalObject;
// Call the constructor object.
JSValue constructor = obj->imp;
auto constructData = getConstructData(vm, constructor);
if (constructData.type == CallData::Type::None)
return false;
MarkedArgumentBuffer argList;
getListFromVariantArgs(lexicalGlobalObject, args, argCount, rootObject, argList);
RELEASE_ASSERT(!argList.hasOverflowed());
JSValue resultV = JSC::construct(lexicalGlobalObject, constructor, constructData, argList);
// Convert and return the result.
convertValueToNPVariant(lexicalGlobalObject, resultV, result);
scope.clearException();
return true;
}
if (NP_CLASS_STRUCT_VERSION_HAS_CTOR(o->_class) && o->_class->construct)
return o->_class->construct(o, args, argCount, result);
return false;
}
} // extern "C"
} // namespace JSC
#endif // ENABLE(NETSCAPE_PLUGIN_API)