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/*
* Copyright (C) 2021 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 "WebBroadcastChannelRegistry.h"
#include "NetworkBroadcastChannelRegistryMessages.h"
#include "NetworkProcessConnection.h"
#include "WebProcess.h"
#include <WebCore/BroadcastChannel.h>
#include <WebCore/MessageWithMessagePorts.h>
#include <wtf/CallbackAggregator.h>
namespace WebKit {
static inline IPC::Connection& networkProcessConnection()
{
return WebProcess::singleton().ensureNetworkProcessConnection().connection();
}
void WebBroadcastChannelRegistry::registerChannel(const WebCore::ClientOrigin& origin, const String& name, WebCore::BroadcastChannelIdentifier identifier)
{
auto& channelsForOrigin = m_channelsPerOrigin.ensure(origin, [] { return HashMap<String, Vector<WebCore::BroadcastChannelIdentifier>> { }; }).iterator->value;
auto& channelsForName = channelsForOrigin.ensure(name, [] { return Vector<WebCore::BroadcastChannelIdentifier> { }; }).iterator->value;
channelsForName.append(identifier);
if (channelsForName.size() == 1)
networkProcessConnection().send(Messages::NetworkBroadcastChannelRegistry::RegisterChannel { origin, name }, 0);
}
void WebBroadcastChannelRegistry::unregisterChannel(const WebCore::ClientOrigin& origin, const String& name, WebCore::BroadcastChannelIdentifier identifier)
{
auto channelsPerOriginIterator = m_channelsPerOrigin.find(origin);
if (channelsPerOriginIterator == m_channelsPerOrigin.end())
return;
auto& channelsForOrigin = channelsPerOriginIterator->value;
auto channelsForOriginIterator = channelsForOrigin.find(name);
if (channelsForOriginIterator == channelsForOrigin.end())
return;
auto& channelIdentifiersForName = channelsForOriginIterator->value;
if (!channelIdentifiersForName.removeFirst(identifier))
return;
if (!channelIdentifiersForName.isEmpty())
return;
channelsForOrigin.remove(channelsForOriginIterator);
networkProcessConnection().send(Messages::NetworkBroadcastChannelRegistry::UnregisterChannel { origin, name }, 0);
if (channelsForOrigin.isEmpty())
m_channelsPerOrigin.remove(channelsPerOriginIterator);
}
void WebBroadcastChannelRegistry::postMessage(const WebCore::ClientOrigin& origin, const String& name, WebCore::BroadcastChannelIdentifier source, Ref<WebCore::SerializedScriptValue>&& message, CompletionHandler<void()>&& completionHandler)
{
auto callbackAggregator = CallbackAggregator::create(WTFMove(completionHandler));
postMessageLocally(origin, name, source, message.copyRef(), callbackAggregator.copyRef());
networkProcessConnection().sendWithAsyncReply(Messages::NetworkBroadcastChannelRegistry::PostMessage { origin, name, WebCore::MessageWithMessagePorts { WTFMove(message), { } } }, [callbackAggregator] { }, 0);
}
void WebBroadcastChannelRegistry::postMessageLocally(const WebCore::ClientOrigin& origin, const String& name, std::optional<WebCore::BroadcastChannelIdentifier> sourceInProcess, Ref<WebCore::SerializedScriptValue>&& message, Ref<WTF::CallbackAggregator>&& callbackAggregator)
{
auto channelsPerOriginIterator = m_channelsPerOrigin.find(origin);
if (channelsPerOriginIterator == m_channelsPerOrigin.end())
return;
auto& channelsForOrigin = channelsPerOriginIterator->value;
auto channelsForOriginIterator = channelsForOrigin.find(name);
if (channelsForOriginIterator == channelsForOrigin.end())
return;
auto channelIdentifiersForName = channelsForOriginIterator->value;
for (auto& channelIdentier : channelIdentifiersForName) {
if (channelIdentier == sourceInProcess)
continue;
WebCore::BroadcastChannel::dispatchMessageTo(channelIdentier, message.copyRef(), [callbackAggregator] { });
}
}
void WebBroadcastChannelRegistry::postMessageToRemote(const WebCore::ClientOrigin& origin, const String& name, WebCore::MessageWithMessagePorts&& message, CompletionHandler<void()>&& completionHandler)
{
auto callbackAggregator = CallbackAggregator::create(WTFMove(completionHandler));
postMessageLocally(origin, name, std::nullopt, *message.message, callbackAggregator.copyRef());
}
void WebBroadcastChannelRegistry::networkProcessCrashed()
{
for (auto& [origin, channelsForOrigin] : m_channelsPerOrigin) {
for (auto& name : channelsForOrigin.keys())
networkProcessConnection().send(Messages::NetworkBroadcastChannelRegistry::RegisterChannel { origin, name }, 0);
}
}
} // namespace WebKit
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