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/*
* Copyright (C) 2022 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:
* 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. AND ITS 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 APPLE INC. OR ITS 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 "URLKeepingBlobAlive.h"
#include "ThreadableBlobRegistry.h"
#include <wtf/CrossThreadCopier.h>
namespace WebCore {
URLKeepingBlobAlive::URLKeepingBlobAlive(const URL& url, const std::optional<SecurityOriginData>& topOrigin)
: m_url(url)
, m_topOrigin(topOrigin)
{
registerBlobURLHandleIfNecessary();
}
URLKeepingBlobAlive::~URLKeepingBlobAlive()
{
unregisterBlobURLHandleIfNecessary();
}
void URLKeepingBlobAlive::clear()
{
unregisterBlobURLHandleIfNecessary();
m_url = { };
m_topOrigin = std::nullopt;
}
URLKeepingBlobAlive& URLKeepingBlobAlive::operator=(URLKeepingBlobAlive&& other)
{
if (&other == this)
return *this;
unregisterBlobURLHandleIfNecessary();
m_url = std::exchange(other.m_url, URL { });
m_topOrigin = std::exchange(other.m_topOrigin, { });
return *this;
}
void URLKeepingBlobAlive::registerBlobURLHandleIfNecessary()
{
if (m_url.protocolIsBlob())
ThreadableBlobRegistry::registerBlobURLHandle(m_url, m_topOrigin);
}
void URLKeepingBlobAlive::unregisterBlobURLHandleIfNecessary()
{
if (m_url.protocolIsBlob())
ThreadableBlobRegistry::unregisterBlobURLHandle(m_url, m_topOrigin);
}
URLKeepingBlobAlive URLKeepingBlobAlive::isolatedCopy() const
{
return { m_url.isolatedCopy(), crossThreadCopy(m_topOrigin) };
}
} // namespace WebCore
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