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/*
* Copyright (C) 2019 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. ``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
* 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 "WebBroadcastChannelRegistry.h"
#include <WebCore/BroadcastChannel.h>
#include <WebCore/SerializedScriptValue.h>
#include <wtf/CallbackAggregator.h>
#include <wtf/HashMap.h>
#include <wtf/NeverDestroyed.h>
Ref<WebBroadcastChannelRegistry> WebBroadcastChannelRegistry::getOrCreate(bool privateSession)
{
static NeverDestroyed<WeakPtr<WebBroadcastChannelRegistry>> defaultSessionRegistry;
static NeverDestroyed<WeakPtr<WebBroadcastChannelRegistry>> privateSessionRegistry;
auto& existingRegistry = privateSession ? privateSessionRegistry : defaultSessionRegistry;
if (existingRegistry.get())
return *existingRegistry.get();
auto registry = adoptRef(*new WebBroadcastChannelRegistry);
existingRegistry.get() = registry;
return registry;
}
void WebBroadcastChannelRegistry::registerChannel(const WebCore::PartitionedSecurityOrigin& origin, const String& name, WebCore::BroadcastChannelIdentifier identifier)
{
ASSERT(isMainThread());
auto& channelsForOrigin = m_channels.ensure(origin, [] { return NameToChannelIdentifiersMap { }; }).iterator->value;
auto& channelsForName = channelsForOrigin.ensure(name, [] { return Vector<WebCore::BroadcastChannelIdentifier> { }; }).iterator->value;
ASSERT(!channelsForName.contains(identifier));
channelsForName.append(identifier);
}
void WebBroadcastChannelRegistry::unregisterChannel(const WebCore::PartitionedSecurityOrigin& origin, const String& name, WebCore::BroadcastChannelIdentifier identifier)
{
ASSERT(isMainThread());
auto channelsForOriginIterator = m_channels.find(origin);
ASSERT(channelsForOriginIterator != m_channels.end());
if (channelsForOriginIterator == m_channels.end())
return;
auto channelsForNameIterator = channelsForOriginIterator->value.find(name);
ASSERT(channelsForNameIterator != channelsForOriginIterator->value.end());
ASSERT(channelsForNameIterator->value.contains(identifier));
channelsForNameIterator->value.removeFirst(identifier);
}
void WebBroadcastChannelRegistry::postMessage(const WebCore::PartitionedSecurityOrigin& origin, const String& name, WebCore::BroadcastChannelIdentifier source, Ref<WebCore::SerializedScriptValue>&& message, CompletionHandler<void()>&& completionHandler)
{
ASSERT(isMainThread());
auto callbackAggregator = CallbackAggregator::create(WTFMove(completionHandler));
auto channelsForOriginIterator = m_channels.find(origin);
ASSERT(channelsForOriginIterator != m_channels.end());
if (channelsForOriginIterator == m_channels.end())
return;
auto channelsForNameIterator = channelsForOriginIterator->value.find(name);
ASSERT(channelsForNameIterator != channelsForOriginIterator->value.end());
for (auto& channelIdentifier : channelsForNameIterator->value) {
if (channelIdentifier == source)
continue;
WebCore::BroadcastChannel::dispatchMessageTo(channelIdentifier, message.copyRef(), [callbackAggregator] { });
}
}