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/*
* Copyright (C) 2017 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 "NetworkRTCMonitor.h"
#if USE(LIBWEBRTC)
#include "Connection.h"
#include "Logging.h"
#include "NetworkRTCProvider.h"
#include "WebRTCMonitorMessages.h"
#include <wtf/Function.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/WeakHashSet.h>
ALLOW_COMMA_BEGIN
#include <webrtc/rtc_base/third_party/sigslot/sigslot.h>
ALLOW_COMMA_END
namespace WebKit {
#define RTC_RELEASE_LOG(fmt, ...) RELEASE_LOG(Network, "%p - NetworkRTCMonitor::" fmt, this, ##__VA_ARGS__)
class NetworkManagerWrapper final : public sigslot::has_slots<> {
public:
void addListener(NetworkRTCMonitor&);
void removeListener(NetworkRTCMonitor&);
private:
void onNetworksChanged();
std::unique_ptr<rtc::BasicNetworkManager> m_manager;
WeakHashSet<NetworkRTCMonitor> m_observers;
bool m_didReceiveResults { false };
Vector<RTCNetwork> m_networkList;
RTCNetwork::IPAddress m_ipv4;
RTCNetwork::IPAddress m_ipv6;
};
static NetworkManagerWrapper& networkManager()
{
static NeverDestroyed<NetworkManagerWrapper> networkManager;
return networkManager.get();
}
void NetworkManagerWrapper::addListener(NetworkRTCMonitor& monitor)
{
bool shouldStart = m_observers.isEmptyIgnoringNullReferences();
m_observers.add(monitor);
if (!shouldStart) {
if (m_didReceiveResults)
monitor.onNetworksChanged(m_networkList, m_ipv4, m_ipv6);
return;
}
monitor.rtcProvider().callOnRTCNetworkThread([this]() {
if (m_manager)
return;
RELEASE_LOG(WebRTC, "NetworkManagerWrapper startUpdating");
m_manager = makeUniqueWithoutFastMallocCheck<rtc::BasicNetworkManager>(NetworkRTCProvider::rtcNetworkThread().socketserver());
m_manager->SignalNetworksChanged.connect(this, &NetworkManagerWrapper::onNetworksChanged);
m_manager->StartUpdating();
});
}
void NetworkManagerWrapper::removeListener(NetworkRTCMonitor& monitor)
{
m_observers.remove(monitor);
if (!m_observers.isEmptyIgnoringNullReferences())
return;
monitor.rtcProvider().callOnRTCNetworkThread([this]() {
if (!m_manager)
return;
RELEASE_LOG(WebRTC, "NetworkManagerWrapper stopUpdating");
m_manager->StopUpdating();
m_manager = nullptr;
});
}
void NetworkManagerWrapper::onNetworksChanged()
{
RELEASE_LOG(WebRTC, "NetworkManagerWrapper::onNetworksChanged");
RTCNetwork::IPAddress ipv4;
m_manager->GetDefaultLocalAddress(AF_INET, &ipv4.value);
RTCNetwork::IPAddress ipv6;
m_manager->GetDefaultLocalAddress(AF_INET6, &ipv6.value);
auto networks = m_manager->GetNetworks();
auto networkList = WTF::map(networks, [](auto& network) { return RTCNetwork { *network }; });
callOnMainRunLoop([this, networkList = WTFMove(networkList), ipv4 = WTFMove(ipv4), ipv6 = WTFMove(ipv6)]() mutable {
m_didReceiveResults = true;
m_networkList = WTFMove(networkList);
m_ipv4 = WTFMove(ipv4);
m_ipv6 = WTFMove(ipv6);
m_observers.forEach([this](auto& observer) {
observer.onNetworksChanged(m_networkList, m_ipv4, m_ipv6);
});
});
}
NetworkRTCMonitor::~NetworkRTCMonitor()
{
ASSERT(!m_manager);
}
void NetworkRTCMonitor::startUpdatingIfNeeded()
{
RTC_RELEASE_LOG("startUpdatingIfNeeded m_isStarted=%d", m_isStarted);
networkManager().addListener(*this);
}
void NetworkRTCMonitor::stopUpdating()
{
RTC_RELEASE_LOG("stopUpdating");
networkManager().removeListener(*this);
}
void NetworkRTCMonitor::onNetworksChanged(const Vector<RTCNetwork>& networkList, const RTCNetwork::IPAddress& ipv4, const RTCNetwork::IPAddress& ipv6)
{
RTC_RELEASE_LOG("onNetworksChanged sent");
m_rtcProvider.connection().send(Messages::WebRTCMonitor::NetworksChanged(networkList, ipv4, ipv6), 0);
}
} // namespace WebKit
#undef RTC_RELEASE_LOG
#endif // USE(LIBWEBRTC)
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