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/*
* Copyright (C) 2012 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 GOOGLE 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 COMPUTER, 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/frame/DOMSecurityPolicy.h"
#include "core/dom/DOMStringList.h"
#include "core/dom/ExecutionContext.h"
#include "core/frame/ContentSecurityPolicy.h"
#include "wtf/text/TextPosition.h"
namespace WebCore {
namespace {
bool isPolicyActiveInContext(ExecutionContext* context)
{
// If the ExecutionContext has been destroyed, there's no active policy.
if (!context)
return false;
return context->contentSecurityPolicy()->isActive();
}
template<bool (ContentSecurityPolicy::*allowWithType)(const String&, const String&, const KURL&, ContentSecurityPolicy::ReportingStatus) const>
bool isAllowedWithType(ExecutionContext* context, const String& type)
{
if (!isPolicyActiveInContext(context))
return true;
return (context->contentSecurityPolicy()->*allowWithType)(type, type, KURL(), ContentSecurityPolicy::SuppressReport);
}
template<bool (ContentSecurityPolicy::*allowWithURL)(const KURL&, ContentSecurityPolicy::ReportingStatus) const>
bool isAllowedWithURL(ExecutionContext* context, const String& url)
{
if (!isPolicyActiveInContext(context))
return true;
KURL parsedURL = context->completeURL(url);
if (!parsedURL.isValid())
return false; // FIXME: Figure out how to throw a JavaScript error.
return (context->contentSecurityPolicy()->*allowWithURL)(parsedURL, ContentSecurityPolicy::SuppressReport);
}
template<bool (ContentSecurityPolicy::*allowWithContext)(const String&, const WTF::OrdinalNumber&, ContentSecurityPolicy::ReportingStatus) const>
bool isAllowed(ExecutionContext* context)
{
if (!isPolicyActiveInContext(context))
return true;
return (context->contentSecurityPolicy()->*allowWithContext)(String(), WTF::OrdinalNumber::beforeFirst(), ContentSecurityPolicy::SuppressReport);
}
} // namespace
DOMSecurityPolicy::DOMSecurityPolicy(ExecutionContext* context)
: ContextLifecycleObserver(context)
{
ScriptWrappable::init(this);
}
DOMSecurityPolicy::~DOMSecurityPolicy()
{
}
bool DOMSecurityPolicy::isActive() const
{
return isPolicyActiveInContext(executionContext());
}
PassRefPtr<DOMStringList> DOMSecurityPolicy::reportURIs() const
{
RefPtr<DOMStringList> result = DOMStringList::create();
if (isActive())
executionContext()->contentSecurityPolicy()->gatherReportURIs(*result.get());
return result.release();
}
bool DOMSecurityPolicy::allowsInlineScript() const
{
return isAllowed<&ContentSecurityPolicy::allowInlineScript>(executionContext());
}
bool DOMSecurityPolicy::allowsInlineStyle() const
{
return isAllowed<&ContentSecurityPolicy::allowInlineStyle>(executionContext());
}
bool DOMSecurityPolicy::allowsEval() const
{
if (!isActive())
return true;
return executionContext()->contentSecurityPolicy()->allowEval(0, ContentSecurityPolicy::SuppressReport);
}
bool DOMSecurityPolicy::allowsConnectionTo(const String& url) const
{
return isAllowedWithURL<&ContentSecurityPolicy::allowConnectToSource>(executionContext(), url);
}
bool DOMSecurityPolicy::allowsFontFrom(const String& url) const
{
return isAllowedWithURL<&ContentSecurityPolicy::allowFontFromSource>(executionContext(), url);
}
bool DOMSecurityPolicy::allowsFormAction(const String& url) const
{
return isAllowedWithURL<&ContentSecurityPolicy::allowFormAction>(executionContext(), url);
}
bool DOMSecurityPolicy::allowsFrameFrom(const String& url) const
{
return isAllowedWithURL<&ContentSecurityPolicy::allowChildFrameFromSource>(executionContext(), url);
}
bool DOMSecurityPolicy::allowsImageFrom(const String& url) const
{
return isAllowedWithURL<&ContentSecurityPolicy::allowImageFromSource>(executionContext(), url);
}
bool DOMSecurityPolicy::allowsMediaFrom(const String& url) const
{
return isAllowedWithURL<&ContentSecurityPolicy::allowMediaFromSource>(executionContext(), url);
}
bool DOMSecurityPolicy::allowsObjectFrom(const String& url) const
{
return isAllowedWithURL<&ContentSecurityPolicy::allowObjectFromSource>(executionContext(), url);
}
bool DOMSecurityPolicy::allowsPluginType(const String& type) const
{
return isAllowedWithType<&ContentSecurityPolicy::allowPluginType>(executionContext(), type);
}
bool DOMSecurityPolicy::allowsScriptFrom(const String& url) const
{
return isAllowedWithURL<&ContentSecurityPolicy::allowScriptFromSource>(executionContext(), url);
}
bool DOMSecurityPolicy::allowsStyleFrom(const String& url) const
{
return isAllowedWithURL<&ContentSecurityPolicy::allowStyleFromSource>(executionContext(), url);
}
} // namespace WebCore
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