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/*
* Copyright (C) 2013 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 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"
#include "core/html/parser/XSSAuditorDelegate.h"
#include "core/dom/Document.h"
#include "core/frame/LocalFrame.h"
#include "core/loader/DocumentLoader.h"
#include "core/loader/FrameLoader.h"
#include "core/loader/FrameLoaderClient.h"
#include "core/loader/PingLoader.h"
#include "platform/JSONValues.h"
#include "platform/network/FormData.h"
#include "platform/weborigin/SecurityOrigin.h"
#include "wtf/text/StringBuilder.h"
namespace WebCore {
String XSSInfo::buildConsoleError() const
{
StringBuilder message;
message.append("The XSS Auditor ");
message.append(m_didBlockEntirePage ? "blocked access to" : "refused to execute a script in");
message.append(" '");
message.append(m_originalURL);
message.append("' because ");
message.append(m_didBlockEntirePage ? "the source code of a script" : "its source code");
message.append(" was found within the request.");
if (m_didSendCSPHeader)
message.append(" The server sent a 'Content-Security-Policy' header requesting this behavior.");
else if (m_didSendXSSProtectionHeader)
message.append(" The server sent an 'X-XSS-Protection' header requesting this behavior.");
else
message.append(" The auditor was enabled as the server sent neither an 'X-XSS-Protection' nor 'Content-Security-Policy' header.");
return message.toString();
}
bool XSSInfo::isSafeToSendToAnotherThread() const
{
return m_originalURL.isSafeToSendToAnotherThread();
}
XSSAuditorDelegate::XSSAuditorDelegate(Document* document)
: m_document(document)
, m_didSendNotifications(false)
{
ASSERT(isMainThread());
ASSERT(m_document);
}
PassRefPtr<FormData> XSSAuditorDelegate::generateViolationReport(const XSSInfo& xssInfo)
{
ASSERT(isMainThread());
FrameLoader& frameLoader = m_document->frame()->loader();
String httpBody;
if (frameLoader.documentLoader()) {
if (FormData* formData = frameLoader.documentLoader()->originalRequest().httpBody())
httpBody = formData->flattenToString();
}
RefPtr<JSONObject> reportDetails = JSONObject::create();
reportDetails->setString("request-url", xssInfo.m_originalURL);
reportDetails->setString("request-body", httpBody);
RefPtr<JSONObject> reportObject = JSONObject::create();
reportObject->setObject("xss-report", reportDetails.release());
return FormData::create(reportObject->toJSONString().utf8().data());
}
void XSSAuditorDelegate::didBlockScript(const XSSInfo& xssInfo)
{
ASSERT(isMainThread());
m_document->addConsoleMessage(JSMessageSource, ErrorMessageLevel, xssInfo.buildConsoleError());
// stopAllLoaders can detach the LocalFrame, so protect it.
RefPtr<LocalFrame> protect(m_document->frame());
FrameLoader& frameLoader = m_document->frame()->loader();
if (xssInfo.m_didBlockEntirePage)
frameLoader.stopAllLoaders();
if (!m_didSendNotifications) {
m_didSendNotifications = true;
frameLoader.client()->didDetectXSS(m_document->url(), xssInfo.m_didBlockEntirePage);
if (!m_reportURL.isEmpty())
PingLoader::sendViolationReport(m_document->frame(), m_reportURL, generateViolationReport(xssInfo), PingLoader::XSSAuditorViolationReport);
}
if (xssInfo.m_didBlockEntirePage)
m_document->frame()->navigationScheduler().scheduleLocationChange(m_document, SecurityOrigin::urlWithUniqueSecurityOrigin(), Referrer());
}
} // namespace WebCore
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