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/*
* Copyright (C) 2010 Google Inc. All rights reserved.
* Copyright (C) 2013-2018 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:
*
* * 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 "JSErrorHandler.h"
#include "Document.h"
#include "ErrorEvent.h"
#include "Event.h"
#include "JSDOMConvertNumbers.h"
#include "JSDOMConvertStrings.h"
#include "JSDOMWindow.h"
#include "JSEvent.h"
#include "JSExecState.h"
#include "JSExecStateInstrumentation.h"
#include <JavaScriptCore/JSLock.h>
#include <JavaScriptCore/VMEntryScopeInlines.h>
#include <wtf/Ref.h>
namespace WebCore {
using namespace JSC;
inline JSErrorHandler::JSErrorHandler(JSObject& listener, JSObject& wrapper, bool isAttribute, DOMWrapperWorld& world)
: JSEventListener(&listener, &wrapper, isAttribute, CreatedFromMarkup::No, world)
{
}
Ref<JSErrorHandler> JSErrorHandler::create(JSC::JSObject& listener, JSC::JSObject& wrapper, bool isAttribute, DOMWrapperWorld& world)
{
return adoptRef(*new JSErrorHandler(listener, wrapper, isAttribute, world));
}
JSErrorHandler::~JSErrorHandler() = default;
void JSErrorHandler::handleEvent(ScriptExecutionContext& scriptExecutionContext, Event& event)
{
auto* errorEvent = dynamicDowncast<ErrorEvent>(event);
if (!errorEvent)
return JSEventListener::handleEvent(scriptExecutionContext, event);
VM& vm = scriptExecutionContext.vm();
JSLockHolder lock(vm);
JSObject* jsFunction = this->ensureJSFunction(scriptExecutionContext);
if (!jsFunction)
return;
auto* isolatedWorld = this->isolatedWorld();
if (UNLIKELY(!isolatedWorld))
return;
auto* globalObject = toJSDOMGlobalObject(scriptExecutionContext, *isolatedWorld);
if (!globalObject)
return;
auto callData = JSC::getCallData(jsFunction);
if (callData.type != CallData::Type::None) {
Ref<JSErrorHandler> protectedThis(*this);
RefPtr<Event> savedEvent;
auto* jsFunctionWindow = jsDynamicCast<JSDOMWindow*>(jsFunction->globalObject());
if (jsFunctionWindow) {
savedEvent = jsFunctionWindow->currentEvent();
// window.event should not be set when the target is inside a shadow tree, as per the DOM specification.
if (!errorEvent->currentTargetIsInShadowTree())
jsFunctionWindow->setCurrentEvent(errorEvent);
}
MarkedArgumentBuffer args;
args.append(toJS<IDLDOMString>(*globalObject, errorEvent->message()));
args.append(toJS<IDLUSVString>(*globalObject, errorEvent->filename()));
args.append(toJS<IDLUnsignedLong>(errorEvent->lineno()));
args.append(toJS<IDLUnsignedLong>(errorEvent->colno()));
args.append(errorEvent->error(*globalObject));
ASSERT(!args.hasOverflowed());
VM& vm = globalObject->vm();
VMEntryScope entryScope(vm, vm.entryScope ? vm.entryScope->globalObject() : globalObject);
JSExecState::instrumentFunction(&scriptExecutionContext, callData);
NakedPtr<JSC::Exception> exception;
JSValue returnValue = JSExecState::profiledCall(globalObject, JSC::ProfilingReason::Other, jsFunction, callData, globalObject, args, exception);
InspectorInstrumentation::didCallFunction(&scriptExecutionContext);
if (exception)
reportException(jsFunction->globalObject(), exception);
else {
if (returnValue.isTrue())
errorEvent->preventDefault();
}
if (jsFunctionWindow)
jsFunctionWindow->setCurrentEvent(savedEvent.get());
}
}
} // namespace WebCore
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