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/*
* Copyright (C) 2018 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 "WebMessagePortChannelProvider.h"
#include "NetworkConnectionToWebProcessMessages.h"
#include "NetworkProcessConnection.h"
#include "WebProcess.h"
#include <WebCore/MessagePort.h>
#include <WebCore/MessagePortIdentifier.h>
#include <WebCore/MessageWithMessagePorts.h>
namespace WebKit {
using namespace WebCore;
WebMessagePortChannelProvider& WebMessagePortChannelProvider::singleton()
{
static WebMessagePortChannelProvider* provider = new WebMessagePortChannelProvider;
return *provider;
}
WebMessagePortChannelProvider::WebMessagePortChannelProvider()
{
}
WebMessagePortChannelProvider::~WebMessagePortChannelProvider()
{
ASSERT_NOT_REACHED();
}
static inline IPC::Connection& networkProcessConnection()
{
return WebProcess::singleton().ensureNetworkProcessConnection().connection();
}
void WebMessagePortChannelProvider::createNewMessagePortChannel(const MessagePortIdentifier& port1, const MessagePortIdentifier& port2)
{
ASSERT(!m_inProcessPortMessages.contains(port1));
ASSERT(!m_inProcessPortMessages.contains(port2));
m_inProcessPortMessages.add(port1, Vector<MessageWithMessagePorts> { });
m_inProcessPortMessages.add(port2, Vector<MessageWithMessagePorts> { });
networkProcessConnection().send(Messages::NetworkConnectionToWebProcess::CreateNewMessagePortChannel { port1, port2 }, 0);
}
void WebMessagePortChannelProvider::entangleLocalPortInThisProcessToRemote(const MessagePortIdentifier& local, const MessagePortIdentifier& remote)
{
m_inProcessPortMessages.add(local, Vector<MessageWithMessagePorts> { });
networkProcessConnection().send(Messages::NetworkConnectionToWebProcess::EntangleLocalPortInThisProcessToRemote { local, remote }, 0);
}
void WebMessagePortChannelProvider::messagePortDisentangled(const MessagePortIdentifier& port)
{
networkProcessConnection().send(Messages::NetworkConnectionToWebProcess::MessagePortDisentangled { port }, 0);
}
void WebMessagePortChannelProvider::messagePortSentToRemote(const WebCore::MessagePortIdentifier& port)
{
auto inProcessPortMessages = m_inProcessPortMessages.take(port);
for (auto& message : inProcessPortMessages)
postMessageToRemote(WTFMove(message), port);
}
void WebMessagePortChannelProvider::messagePortClosed(const MessagePortIdentifier& port)
{
m_inProcessPortMessages.remove(port);
networkProcessConnection().send(Messages::NetworkConnectionToWebProcess::MessagePortClosed { port }, 0);
}
void WebMessagePortChannelProvider::takeAllMessagesForPort(const MessagePortIdentifier& port, CompletionHandler<void(Vector<MessageWithMessagePorts>&&, CompletionHandler<void()>&&)>&& completionHandler)
{
networkProcessConnection().sendWithAsyncReply(Messages::NetworkConnectionToWebProcess::TakeAllMessagesForPort { port }, [completionHandler = WTFMove(completionHandler), port](auto&& messages, uint64_t messageBatchIdentifier) mutable {
auto& inProcessPortMessages = WebMessagePortChannelProvider::singleton().m_inProcessPortMessages;
auto iterator = inProcessPortMessages.find(port);
if (iterator != inProcessPortMessages.end()) {
auto pendingMessages = std::exchange(iterator->value, { });
messages.appendVector(WTFMove(pendingMessages));
}
completionHandler(WTFMove(messages), [messageBatchIdentifier] {
networkProcessConnection().send(Messages::NetworkConnectionToWebProcess::DidDeliverMessagePortMessages { messageBatchIdentifier }, 0);
});
}, 0);
}
void WebMessagePortChannelProvider::postMessageToRemote(MessageWithMessagePorts&& message, const MessagePortIdentifier& remoteTarget)
{
auto iterator = m_inProcessPortMessages.find(remoteTarget);
if (iterator != m_inProcessPortMessages.end()) {
iterator->value.append(WTFMove(message));
WebProcess::singleton().messagesAvailableForPort(remoteTarget);
return;
}
for (auto& port : message.transferredPorts)
messagePortSentToRemote(port.first);
networkProcessConnection().send(Messages::NetworkConnectionToWebProcess::PostMessageToRemote { message, remoteTarget }, 0);
}
} // namespace WebKit
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