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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 "NetworkBroadcastChannelRegistry.h"
#include "NetworkProcess.h"
#include "NetworkProcessProxyMessages.h"
#include "WebBroadcastChannelRegistryMessages.h"
#include <WebCore/MessageWithMessagePorts.h>
#include <wtf/CallbackAggregator.h>
namespace WebKit {
#define REGISTRY_MESSAGE_CHECK(assertion) REGISTRY_MESSAGE_CHECK_COMPLETION(assertion, (void)0)
#define REGISTRY_MESSAGE_CHECK_COMPLETION(assertion, completion) do { \
ASSERT(assertion); \
if (UNLIKELY(!(assertion))) { \
if (auto webProcessIdentifier = m_networkProcess->webProcessIdentifierForConnection(connection)) \
m_networkProcess->parentProcessConnection()->send(Messages::NetworkProcessProxy::TerminateWebProcess(webProcessIdentifier), 0); \
{ completion; } \
return; \
} \
} while (0)
static bool isValidClientOrigin(const WebCore::ClientOrigin& clientOrigin)
{
return !clientOrigin.topOrigin.isNull() && !clientOrigin.clientOrigin.isNull();
}
NetworkBroadcastChannelRegistry::NetworkBroadcastChannelRegistry(NetworkProcess& networkProcess)
: m_networkProcess(networkProcess)
{
}
void NetworkBroadcastChannelRegistry::registerChannel(IPC::Connection& connection, const WebCore::ClientOrigin& origin, const String& name)
{
REGISTRY_MESSAGE_CHECK(isValidClientOrigin(origin));
auto& channelsForOrigin = m_broadcastChannels.ensure(origin, [] { return NameToConnectionIdentifiersMap { }; }).iterator->value;
auto& connectionIdentifiersForName = channelsForOrigin.ensure(name, [] { return Vector<IPC::Connection::UniqueID> { }; }).iterator->value;
ASSERT(!connectionIdentifiersForName.contains(connection.uniqueID()));
connectionIdentifiersForName.append(connection.uniqueID());
}
void NetworkBroadcastChannelRegistry::unregisterChannel(IPC::Connection& connection, const WebCore::ClientOrigin& origin, const String& name)
{
REGISTRY_MESSAGE_CHECK(isValidClientOrigin(origin));
auto channelsForOriginIterator = m_broadcastChannels.find(origin);
ASSERT(channelsForOriginIterator != m_broadcastChannels.end());
if (channelsForOriginIterator == m_broadcastChannels.end())
return;
auto connectionIdentifiersForNameIterator = channelsForOriginIterator->value.find(name);
ASSERT(connectionIdentifiersForNameIterator != channelsForOriginIterator->value.end());
if (connectionIdentifiersForNameIterator == channelsForOriginIterator->value.end())
return;
ASSERT(connectionIdentifiersForNameIterator->value.contains(connection.uniqueID()));
connectionIdentifiersForNameIterator->value.removeFirst(connection.uniqueID());
}
void NetworkBroadcastChannelRegistry::postMessage(IPC::Connection& connection, const WebCore::ClientOrigin& origin, const String& name, WebCore::MessageWithMessagePorts&& message, CompletionHandler<void()>&& completionHandler)
{
REGISTRY_MESSAGE_CHECK_COMPLETION(isValidClientOrigin(origin), completionHandler());
auto channelsForOriginIterator = m_broadcastChannels.find(origin);
ASSERT(channelsForOriginIterator != m_broadcastChannels.end());
if (channelsForOriginIterator == m_broadcastChannels.end())
return completionHandler();
auto connectionIdentifiersForNameIterator = channelsForOriginIterator->value.find(name);
ASSERT(connectionIdentifiersForNameIterator != channelsForOriginIterator->value.end());
if (connectionIdentifiersForNameIterator == channelsForOriginIterator->value.end())
return completionHandler();
auto callbackAggregator = CallbackAggregator::create(WTFMove(completionHandler));
for (auto& connectionID : connectionIdentifiersForNameIterator->value) {
// Only dispatch the post the messages to BroadcastChannels outside the source process.
if (connectionID == connection.uniqueID())
continue;
RefPtr connection = IPC::Connection::connection(connectionID);
if (!connection)
continue;
connection->sendWithAsyncReply(Messages::WebBroadcastChannelRegistry::PostMessageToRemote(origin, name, message), [callbackAggregator] { }, 0);
}
}
void NetworkBroadcastChannelRegistry::removeConnection(IPC::Connection& connection)
{
Vector<WebCore::ClientOrigin> originsToRemove;
for (auto& entry : m_broadcastChannels) {
Vector<String> namesToRemove;
for (auto& innerEntry : entry.value) {
innerEntry.value.removeFirst(connection.uniqueID());
if (innerEntry.value.isEmpty())
namesToRemove.append(innerEntry.key);
}
for (auto& nameToRemove : namesToRemove)
entry.value.remove(nameToRemove);
if (entry.value.isEmpty())
originsToRemove.append(entry.key);
}
for (auto& originToRemove : originsToRemove)
m_broadcastChannels.remove(originToRemove);
}
#undef REGISTRY_MESSAGE_CHECK
#undef REGISTRY_MESSAGE_CHECK_COMPLETION
} // namespace WebKit
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