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/*
* Copyright (C) 2000 Harri Porten (porten@kde.org)
* Copyright (C) 2006 Jon Shier (jshier@iastate.edu)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2010 Apple Inc. All rights reseved.
* Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
* USA
*/
#include "config.h"
#include "JSLocation.h"
#include "JSDOMBinding.h"
#include "JSDOMBindingSecurity.h"
#include "JSDOMExceptionHandling.h"
#include "RuntimeApplicationChecks.h"
#include <runtime/JSFunction.h>
#include <runtime/Lookup.h>
using namespace JSC;
namespace WebCore {
bool JSLocation::getOwnPropertySlotDelegate(ExecState* state, PropertyName propertyName, PropertySlot& slot)
{
VM& vm = state->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
Frame* frame = wrapped().frame();
if (!frame) {
slot.setUndefined();
return true;
}
// When accessing Location cross-domain, functions are always the native built-in ones.
// See JSDOMWindow::getOwnPropertySlotDelegate for additional details.
// Our custom code is only needed to implement the Window cross-domain scheme, so if access is
// allowed, return false so the normal lookup will take place.
String message;
if (BindingSecurity::shouldAllowAccessToFrame(*state, *frame, message))
return false;
// https://html.spec.whatwg.org/#crossorigingetownpropertyhelper-(-o,-p-)
if (propertyName == state->propertyNames().toStringTagSymbol || propertyName == state->propertyNames().hasInstanceSymbol || propertyName == state->propertyNames().isConcatSpreadableSymbol) {
slot.setValue(this, ReadOnly | DontEnum, jsUndefined());
return true;
}
// We only allow access to Location.replace() cross origin.
if (propertyName == state->propertyNames().replace) {
slot.setCustom(this, ReadOnly | DontEnum, nonCachingStaticFunctionGetter<jsLocationInstanceFunctionReplace, 1>);
return true;
}
// Getting location.href cross origin needs to throw. However, getOwnPropertyDescriptor() needs to return
// a descriptor that has a setter but no getter.
if (slot.internalMethodType() == PropertySlot::InternalMethodType::GetOwnProperty && propertyName == state->propertyNames().href) {
auto* entry = JSLocation::info()->staticPropHashTable->entry(propertyName);
CustomGetterSetter* customGetterSetter = CustomGetterSetter::create(vm, nullptr, entry->propertyPutter());
slot.setCustomGetterSetter(this, DontEnum | CustomAccessor, customGetterSetter);
return true;
}
throwSecurityError(*state, scope, message);
slot.setUndefined();
return true;
}
bool JSLocation::putDelegate(ExecState* state, PropertyName propertyName, JSValue, PutPropertySlot&, bool& putResult)
{
putResult = false;
Frame* frame = wrapped().frame();
if (!frame)
return true;
// Silently block access to toString and valueOf.
if (propertyName == state->propertyNames().toString || propertyName == state->propertyNames().valueOf)
return true;
// Always allow assigning to the whole location.
// However, alllowing assigning of pieces might inadvertently disclose parts of the original location.
// So fall through to the access check for those.
if (propertyName == state->propertyNames().href)
return false;
// Block access and throw if there is a security error.
if (!BindingSecurity::shouldAllowAccessToFrame(state, frame, ThrowSecurityError))
return true;
return false;
}
bool JSLocation::deleteProperty(JSCell* cell, ExecState* exec, PropertyName propertyName)
{
JSLocation* thisObject = jsCast<JSLocation*>(cell);
// Only allow deleting by frames in the same origin.
if (!BindingSecurity::shouldAllowAccessToFrame(exec, thisObject->wrapped().frame(), ThrowSecurityError))
return false;
return Base::deleteProperty(thisObject, exec, propertyName);
}
bool JSLocation::deletePropertyByIndex(JSCell* cell, ExecState* exec, unsigned propertyName)
{
JSLocation* thisObject = jsCast<JSLocation*>(cell);
// Only allow deleting by frames in the same origin.
if (!BindingSecurity::shouldAllowAccessToFrame(exec, thisObject->wrapped().frame(), ThrowSecurityError))
return false;
return Base::deletePropertyByIndex(thisObject, exec, propertyName);
}
// https://html.spec.whatwg.org/#crossoriginproperties-(-o-)
static void addCrossOriginPropertyNames(ExecState& state, PropertyNameArray& propertyNames)
{
static const Identifier* const properties[] = { &state.propertyNames().href, &state.propertyNames().replace };
for (auto* property : properties)
propertyNames.add(*property);
}
// https://html.spec.whatwg.org/#crossoriginownpropertykeys-(-o-)
static void addCrossOriginOwnPropertyNames(ExecState& state, PropertyNameArray& propertyNames)
{
addCrossOriginPropertyNames(state, propertyNames);
propertyNames.add(state.propertyNames().toStringTagSymbol);
propertyNames.add(state.propertyNames().hasInstanceSymbol);
propertyNames.add(state.propertyNames().isConcatSpreadableSymbol);
}
void JSLocation::getOwnPropertyNames(JSObject* object, ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
{
JSLocation* thisObject = jsCast<JSLocation*>(object);
if (!BindingSecurity::shouldAllowAccessToFrame(exec, thisObject->wrapped().frame(), DoNotReportSecurityError)) {
if (mode.includeDontEnumProperties())
addCrossOriginOwnPropertyNames(*exec, propertyNames);
return;
}
Base::getOwnPropertyNames(thisObject, exec, propertyNames, mode);
}
bool JSLocation::defineOwnProperty(JSObject* object, ExecState* exec, PropertyName propertyName, const PropertyDescriptor& descriptor, bool throwException)
{
JSLocation* thisObject = jsCast<JSLocation*>(object);
if (!BindingSecurity::shouldAllowAccessToFrame(exec, thisObject->wrapped().frame(), ThrowSecurityError))
return false;
if (descriptor.isAccessorDescriptor() && (propertyName == exec->propertyNames().toString || propertyName == exec->propertyNames().valueOf))
return false;
return Base::defineOwnProperty(object, exec, propertyName, descriptor, throwException);
}
bool JSLocation::setPrototype(JSObject*, ExecState* exec, JSValue, bool shouldThrowIfCantSet)
{
auto scope = DECLARE_THROW_SCOPE(exec->vm());
if (shouldThrowIfCantSet)
throwTypeError(exec, scope, ASCIILiteral("Cannot set prototype of this object"));
return false;
}
JSValue JSLocation::getPrototype(JSObject* object, ExecState* exec)
{
JSLocation* thisObject = jsCast<JSLocation*>(object);
if (!BindingSecurity::shouldAllowAccessToFrame(exec, thisObject->wrapped().frame(), DoNotReportSecurityError))
return jsNull();
return Base::getPrototype(object, exec);
}
bool JSLocation::preventExtensions(JSObject*, ExecState* exec)
{
auto scope = DECLARE_THROW_SCOPE(exec->vm());
throwTypeError(exec, scope, ASCIILiteral("Cannot prevent extensions on this object"));
return false;
}
String JSLocation::toStringName(const JSObject* object, ExecState* exec)
{
auto* thisObject = jsCast<const JSLocation*>(object);
if (!BindingSecurity::shouldAllowAccessToFrame(exec, thisObject->wrapped().frame(), DoNotReportSecurityError))
return ASCIILiteral("Object");
return ASCIILiteral("Location");
}
bool JSLocationPrototype::putDelegate(ExecState* exec, PropertyName propertyName, JSValue, PutPropertySlot&, bool& putResult)
{
putResult = false;
return (propertyName == exec->propertyNames().toString || propertyName == exec->propertyNames().valueOf);
}
bool JSLocationPrototype::defineOwnProperty(JSObject* object, ExecState* exec, PropertyName propertyName, const PropertyDescriptor& descriptor, bool throwException)
{
if (descriptor.isAccessorDescriptor() && (propertyName == exec->propertyNames().toString || propertyName == exec->propertyNames().valueOf))
return false;
return Base::defineOwnProperty(object, exec, propertyName, descriptor, throwException);
}
} // namespace WebCore
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