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/*
* Copyright (C) 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 "ScriptEventListener.h"
#include "Attribute.h"
#include "Document.h"
#include "JSNode.h"
#include "Frame.h"
#include "XSSAuditor.h"
#include <runtime/JSLock.h>
using namespace JSC;
namespace WebCore {
static const String& eventParameterName(bool isSVGEvent)
{
DEFINE_STATIC_LOCAL(const String, eventString, ("event"));
DEFINE_STATIC_LOCAL(const String, evtString, ("evt"));
return isSVGEvent ? evtString : eventString;
}
PassRefPtr<JSLazyEventListener> createAttributeEventListener(Node* node, Attribute* attr)
{
ASSERT(node);
Frame* frame = node->document()->frame();
if (!frame)
return 0;
ScriptController* scriptController = frame->script();
if (!scriptController->isEnabled())
return 0;
if (!scriptController->xssAuditor()->canCreateInlineEventListener(attr->localName().string(), attr->value())) {
// This script is not safe to execute.
return 0;
}
JSDOMWindow* globalObject = scriptController->globalObject();
// Ensure that 'node' has a JavaScript wrapper to mark the event listener we're creating.
{
JSLock lock(false);
toJS(globalObject->globalExec(), node);
}
return JSLazyEventListener::create(attr->localName().string(), eventParameterName(node->isSVGElement()), attr->value(), globalObject, node, scriptController->eventHandlerLineNumber());
}
PassRefPtr<JSLazyEventListener> createAttributeEventListener(Frame* frame, Attribute* attr)
{
if (!frame)
return 0;
ScriptController* scriptController = frame->script();
if (!scriptController->isEnabled())
return 0;
if (!scriptController->xssAuditor()->canCreateInlineEventListener(attr->localName().string(), attr->value())) {
// This script is not safe to execute.
return 0;
}
// 'globalObject' is the JavaScript wrapper that will mark the event listener we're creating.
JSDOMWindow* globalObject = scriptController->globalObject();
return JSLazyEventListener::create(attr->localName().string(), eventParameterName(frame->document()->isSVGDocument()), attr->value(), globalObject, 0, scriptController->eventHandlerLineNumber());
}
} // namespace WebCore
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