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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 "NetworkRTCProvider.h"
#if USE(LIBWEBRTC)
#include "NetworkConnectionToWebProcess.h"
#include "NetworkProcess.h"
#include "NetworkRTCSocket.h"
#include "WebRTCResolverMessages.h"
#include <WebCore/LibWebRTCMacros.h>
#include <webrtc/base/asyncpacketsocket.h>
#include <wtf/MainThread.h>
#include <wtf/text/WTFString.h>
namespace WebKit {
static inline std::unique_ptr<rtc::Thread> createThread()
{
auto thread = rtc::Thread::CreateWithSocketServer();
auto result = thread->Start();
ASSERT_UNUSED(result, result);
// FIXME: Set thread name.
return thread;
}
NetworkRTCProvider::NetworkRTCProvider(NetworkConnectionToWebProcess& connection)
: m_connection(&connection)
, m_rtcMonitor(*this)
, m_rtcNetworkThread(createThread())
, m_packetSocketFactory(makeUniqueRef<rtc::BasicPacketSocketFactory>(m_rtcNetworkThread.get()))
{
}
void NetworkRTCProvider::close()
{
m_connection = nullptr;
m_resolvers.clear();
m_rtcMonitor.stopUpdating();
callOnRTCNetworkThread([this]() {
m_sockets.clear();
});
}
void NetworkRTCProvider::createUDPSocket(uint64_t identifier, const RTCNetwork::SocketAddress& address, uint16_t minPort, uint16_t maxPort)
{
callOnRTCNetworkThread([this, identifier, address = RTCNetwork::isolatedCopy(address.value), minPort, maxPort]() {
std::unique_ptr<rtc::AsyncPacketSocket> socket(m_packetSocketFactory->CreateUdpSocket(address, minPort, maxPort));
addSocket(identifier, std::make_unique<LibWebRTCSocketClient>(identifier, *this, WTFMove(socket), LibWebRTCSocketClient::Type::UDP));
});
}
void NetworkRTCProvider::createServerTCPSocket(uint64_t identifier, const RTCNetwork::SocketAddress& address, uint16_t minPort, uint16_t maxPort, int options)
{
callOnRTCNetworkThread([this, identifier, address = RTCNetwork::isolatedCopy(address.value), minPort, maxPort, options]() {
std::unique_ptr<rtc::AsyncPacketSocket> socket(m_packetSocketFactory->CreateServerTcpSocket(address, minPort, maxPort, options));
addSocket(identifier, std::make_unique<LibWebRTCSocketClient>(identifier, *this, WTFMove(socket), LibWebRTCSocketClient::Type::ServerTCP));
});
}
void NetworkRTCProvider::createClientTCPSocket(uint64_t identifier, const RTCNetwork::SocketAddress& localAddress, const RTCNetwork::SocketAddress& remoteAddress, int options)
{
callOnRTCNetworkThread([this, identifier, localAddress = RTCNetwork::isolatedCopy(localAddress.value), remoteAddress = RTCNetwork::isolatedCopy(remoteAddress.value), options]() {
std::unique_ptr<rtc::AsyncPacketSocket> socket(m_packetSocketFactory->CreateClientTcpSocket(localAddress, remoteAddress, { }, { }, options));
addSocket(identifier, std::make_unique<LibWebRTCSocketClient>(identifier, *this, WTFMove(socket), LibWebRTCSocketClient::Type::ClientTCP));
});
}
void NetworkRTCProvider::addSocket(uint64_t identifier, std::unique_ptr<LibWebRTCSocketClient>&& socket)
{
m_sockets.add(identifier, WTFMove(socket));
}
std::unique_ptr<LibWebRTCSocketClient> NetworkRTCProvider::takeSocket(uint64_t identifier)
{
return m_sockets.take(identifier);
}
void NetworkRTCProvider::didReceiveNetworkRTCSocketMessage(IPC::Connection& connection, IPC::Decoder& decoder)
{
NetworkRTCSocket(decoder.destinationID(), *this).didReceiveMessage(connection, decoder);
}
void NetworkRTCProvider::createResolver(uint64_t identifier, const String& address)
{
CFHostRef host = CFHostCreateWithName(kCFAllocatorDefault, address.createCFString().get());
ASSERT(host);
auto resolver = std::make_unique<Resolver>(identifier, *this, host);
CFHostClientContext context = { 0, resolver.get(), nullptr, nullptr, nullptr };
CFHostSetClient(host, NetworkRTCProvider::resolvedName, &context);
CFHostScheduleWithRunLoop(host, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
Boolean result = CFHostStartInfoResolution(host, kCFHostAddresses, nullptr);
ASSERT_UNUSED(result, result);
m_resolvers.add(identifier, WTFMove(resolver));
}
void NetworkRTCProvider::stopResolver(uint64_t identifier)
{
auto resolver = m_resolvers.take(identifier);
if (resolver)
CFHostCancelInfoResolution(resolver->host, CFHostInfoType::kCFHostAddresses);
}
void NetworkRTCProvider::resolvedName(CFHostRef hostRef, CFHostInfoType typeInfo, const CFStreamError *error, void *info)
{
ASSERT_UNUSED(typeInfo, !typeInfo);
if (error->domain) {
// FIXME: Need to handle failure, but info is not provided in the callback.
return;
}
ASSERT(info);
auto* resolverInfo = static_cast<Resolver*>(info);
auto resolver = resolverInfo->rtcProvider.m_resolvers.take(resolverInfo->identifier);
if (!resolver)
return;
Boolean result;
CFArrayRef resolvedAddresses = (CFArrayRef)CFHostGetAddressing(hostRef, &result);
ASSERT_UNUSED(result, result);
size_t count = CFArrayGetCount(resolvedAddresses);
Vector<RTCNetwork::IPAddress> addresses;
addresses.reserveInitialCapacity(count);
for (size_t index = 0; index < count; ++index) {
CFDataRef data = (CFDataRef)CFArrayGetValueAtIndex(resolvedAddresses, index);
auto* address = reinterpret_cast<const struct sockaddr_in*>(CFDataGetBytePtr(data));
addresses.uncheckedAppend(RTCNetwork::IPAddress(rtc::IPAddress(address->sin_addr)));
}
ASSERT(resolver->rtcProvider.m_connection);
resolver->rtcProvider.m_connection->connection().send(Messages::WebRTCResolver::SetResolvedAddress(addresses), resolver->identifier);
}
struct NetworkMessageData : public rtc::MessageData {
NetworkMessageData(Ref<NetworkRTCProvider>&& rtcProvider, Function<void()>&& callback)
: rtcProvider(WTFMove(rtcProvider))
, callback(WTFMove(callback))
{ }
Ref<NetworkRTCProvider> rtcProvider;
Function<void()> callback;
};
void NetworkRTCProvider::OnMessage(rtc::Message* message)
{
ASSERT(message->message_id == 1);
static_cast<NetworkMessageData*>(message->pdata)->callback();
}
void NetworkRTCProvider::callOnRTCNetworkThread(Function<void()>&& callback)
{
m_rtcNetworkThread->Post(RTC_FROM_HERE, this, 1, new NetworkMessageData(*this, WTFMove(callback)));
}
void NetworkRTCProvider::callSocket(uint64_t identifier, Function<void(LibWebRTCSocketClient&)>&& callback)
{
callOnRTCNetworkThread([this, identifier, callback = WTFMove(callback)]() {
if (auto* socket = m_sockets.get(identifier))
callback(*socket);
});
}
void NetworkRTCProvider::sendFromMainThread(Function<void(IPC::Connection&)>&& callback)
{
callOnMainThread([provider = makeRef(*this), callback = WTFMove(callback)]() {
if (provider->m_connection)
callback(provider->m_connection->connection());
});
}
} // namespace WebKit
#endif // USE(LIBWEBRTC)
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