87 lines
4.2 KiB
C++
87 lines
4.2 KiB
C++
/*
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* Copyright (C) 2019 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "WebBroadcastChannelRegistry.h"
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#include <WebCore/BroadcastChannel.h>
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#include <WebCore/SerializedScriptValue.h>
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#include <wtf/CallbackAggregator.h>
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#include <wtf/HashMap.h>
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#include <wtf/NeverDestroyed.h>
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Ref<WebBroadcastChannelRegistry> WebBroadcastChannelRegistry::getOrCreate(bool privateSession)
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{
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static NeverDestroyed<WeakPtr<WebBroadcastChannelRegistry>> defaultSessionRegistry;
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static NeverDestroyed<WeakPtr<WebBroadcastChannelRegistry>> privateSessionRegistry;
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auto& existingRegistry = privateSession ? privateSessionRegistry : defaultSessionRegistry;
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if (existingRegistry.get())
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return *existingRegistry.get();
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auto registry = adoptRef(*new WebBroadcastChannelRegistry);
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existingRegistry.get() = makeWeakPtr(registry.get());
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return registry;
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}
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void WebBroadcastChannelRegistry::registerChannel(const WebCore::SecurityOriginData& origin, const String& name, WebCore::BroadcastChannelIdentifier identifier)
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{
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ASSERT(isMainThread());
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auto& channelsForOrigin = m_channels.ensure(origin, [] { return NameToChannelIdentifiersMap { }; }).iterator->value;
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auto& channelsForName = channelsForOrigin.ensure(name, [] { return Vector<WebCore::BroadcastChannelIdentifier> { }; }).iterator->value;
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ASSERT(!channelsForName.contains(identifier));
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channelsForName.append(identifier);
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}
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void WebBroadcastChannelRegistry::unregisterChannel(const WebCore::SecurityOriginData& origin, const String& name, WebCore::BroadcastChannelIdentifier identifier)
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{
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ASSERT(isMainThread());
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auto channelsForOriginIterator = m_channels.find(origin);
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ASSERT(channelsForOriginIterator != m_channels.end());
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if (channelsForOriginIterator == m_channels.end())
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return;
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auto channelsForNameIterator = channelsForOriginIterator->value.find(name);
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ASSERT(channelsForNameIterator != channelsForOriginIterator->value.end());
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ASSERT(channelsForNameIterator->value.contains(identifier));
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channelsForNameIterator->value.removeFirst(identifier);
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}
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void WebBroadcastChannelRegistry::postMessage(const WebCore::SecurityOriginData& origin, const String& name, WebCore::BroadcastChannelIdentifier source, Ref<WebCore::SerializedScriptValue>&& message, CompletionHandler<void()>&& completionHandler)
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{
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ASSERT(isMainThread());
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auto callbackAggregator = CallbackAggregator::create(WTFMove(completionHandler));
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auto channelsForOriginIterator = m_channels.find(origin);
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ASSERT(channelsForOriginIterator != m_channels.end());
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if (channelsForOriginIterator == m_channels.end())
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return;
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auto channelsForNameIterator = channelsForOriginIterator->value.find(name);
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ASSERT(channelsForNameIterator != channelsForOriginIterator->value.end());
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for (auto& channelIdentifier : channelsForNameIterator->value) {
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if (channelIdentifier == source)
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continue;
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WebCore::BroadcastChannel::dispatchMessageTo(channelIdentifier, message.copyRef(), [callbackAggregator] { });
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}
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}
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