1 /***************************************************************************
2 * Copyright (C) 2005-2020 by the Quassel Project *
3 * devel@quassel-irc.org *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) version 3. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
19 ***************************************************************************/
25 #include <QHostAddress>
29 #include "proxyline.h"
30 #include "remotepeer.h"
33 using namespace Protocol;
35 const quint32 maxMessageSize = 64 * 1024
36 * 1024; // This is uncompressed size. 64 MB should be enough for any sort of initData or backlog chunk
38 RemotePeer::RemotePeer(::AuthHandler* authHandler, QTcpSocket* socket, Compressor::CompressionLevel level, QObject* parent)
39 : Peer(authHandler, parent)
41 , _compressor(new Compressor(socket, level, this))
42 , _signalProxy(nullptr)
44 , _useProxyLine(false)
45 , _heartBeatTimer(new QTimer(this))
50 socket->setParent(this);
51 connect(socket, &QAbstractSocket::stateChanged, this, &RemotePeer::onSocketStateChanged);
52 connect(socket, selectOverload<QAbstractSocket::SocketError>(&QAbstractSocket::error), this, &RemotePeer::onSocketError);
53 connect(socket, &QAbstractSocket::disconnected, this, &Peer::disconnected);
55 auto* sslSocket = qobject_cast<QSslSocket*>(socket);
57 connect(sslSocket, &QSslSocket::encrypted, this, [this]() { emit secureStateChanged(true); });
60 connect(_compressor, &Compressor::readyRead, this, &RemotePeer::onReadyRead);
61 connect(_compressor, &Compressor::error, this, &RemotePeer::onCompressionError);
63 connect(_heartBeatTimer, &QTimer::timeout, this, &RemotePeer::sendHeartBeat);
66 void RemotePeer::onSocketStateChanged(QAbstractSocket::SocketState state)
68 if (state == QAbstractSocket::ClosingState) {
69 emit statusMessage(tr("Disconnecting..."));
73 void RemotePeer::onSocketError(QAbstractSocket::SocketError error)
75 emit socketError(error, socket()->errorString());
78 void RemotePeer::onCompressionError(Compressor::Error error)
80 close(QString("Compression error %1").arg(error));
83 QString RemotePeer::description() const
88 QHostAddress RemotePeer::hostAddress() const
91 return _proxyLine.sourceHost;
94 return socket()->peerAddress();
100 QString RemotePeer::address() const
102 QHostAddress address = hostAddress();
103 if (address.isNull()) {
107 return address.toString();
111 quint16 RemotePeer::port() const
114 return _proxyLine.sourcePort;
117 return socket()->peerPort();
123 ::SignalProxy* RemotePeer::signalProxy() const
128 void RemotePeer::setSignalProxy(::SignalProxy* proxy)
130 if (proxy == _signalProxy)
134 _heartBeatTimer->stop();
135 disconnect(signalProxy(), nullptr, this, nullptr);
136 _signalProxy = nullptr;
142 qWarning() << Q_FUNC_INFO << "Setting another SignalProxy not supported, ignoring!";
145 _signalProxy = proxy;
146 connect(proxy, &SignalProxy::heartBeatIntervalChanged, this, &RemotePeer::changeHeartBeatInterval);
147 _heartBeatTimer->setInterval(proxy->heartBeatInterval() * 1000);
148 _heartBeatTimer->start();
152 void RemotePeer::changeHeartBeatInterval(int secs)
155 _heartBeatTimer->stop();
157 _heartBeatTimer->setInterval(secs * 1000);
158 _heartBeatTimer->start();
162 int RemotePeer::lag() const
167 QTcpSocket* RemotePeer::socket() const
172 bool RemotePeer::isSecure() const
177 auto* sslSocket = qobject_cast<QSslSocket*>(socket());
178 if (sslSocket && sslSocket->isEncrypted())
184 bool RemotePeer::isLocal() const
186 return hostAddress() == QHostAddress::LocalHost ||
187 hostAddress() == QHostAddress::LocalHostIPv6;
190 bool RemotePeer::isOpen() const
192 return socket() && socket()->state() == QTcpSocket::ConnectedState;
195 void RemotePeer::close(const QString& reason)
197 if (!reason.isEmpty()) {
198 qWarning() << "Disconnecting:" << reason;
201 if (socket() && socket()->state() != QTcpSocket::UnconnectedState) {
202 socket()->disconnectFromHost();
206 void RemotePeer::onReadyRead()
209 while (readMessage(msg)) {
210 if (SignalProxy::current())
211 SignalProxy::current()->setSourcePeer(this);
215 if (SignalProxy::current())
216 SignalProxy::current()->setSourcePeer(nullptr);
220 bool RemotePeer::readMessage(QByteArray& msg)
223 if (_compressor->bytesAvailable() < 4)
225 _compressor->read((char*) &_msgSize, 4);
226 _msgSize = qFromBigEndian<quint32>(_msgSize);
228 if (_msgSize > maxMessageSize) {
229 close("Peer tried to send package larger than max package size!");
234 close("Peer tried to send an empty message!");
239 if (_compressor->bytesAvailable() < _msgSize) {
240 emit transferProgress(socket()->bytesAvailable(), _msgSize);
244 emit transferProgress(_msgSize, _msgSize);
246 msg.resize(_msgSize);
247 qint64 bytesRead = _compressor->read(msg.data(), _msgSize);
248 if (bytesRead != _msgSize) {
249 close("Premature end of data stream!");
257 void RemotePeer::writeMessage(const QByteArray& msg)
259 auto size = qToBigEndian<quint32>(msg.size());
260 _compressor->write((const char*)&size, 4, Compressor::NoFlush);
261 _compressor->write(msg.constData(), msg.size());
264 void RemotePeer::handle(const HeartBeat& heartBeat)
266 dispatch(HeartBeatReply(heartBeat.timestamp));
269 void RemotePeer::handle(const HeartBeatReply& heartBeatReply)
272 emit lagUpdated(heartBeatReply.timestamp.msecsTo(QDateTime::currentDateTime().toUTC()) / 2);
275 void RemotePeer::sendHeartBeat()
277 if (signalProxy()->maxHeartBeatCount() > 0 && _heartBeatCount >= signalProxy()->maxHeartBeatCount()) {
278 qWarning() << "Disconnecting peer:" << description() << "(didn't receive a heartbeat for over"
279 << _heartBeatCount * _heartBeatTimer->interval() / 1000 << "seconds)";
281 _heartBeatTimer->stop();
285 if (_heartBeatCount > 0) {
286 _lag = _heartBeatCount * _heartBeatTimer->interval();
287 emit lagUpdated(_lag);
290 dispatch(HeartBeat(QDateTime::currentDateTime().toUTC()));
294 void RemotePeer::setProxyLine(ProxyLine proxyLine)
296 _proxyLine = std::move(proxyLine);
299 if (_proxyLine.protocol != QAbstractSocket::UnknownNetworkLayerProtocol) {
300 QList<QString> subnets = Quassel::optionValue("proxy-cidr").split(",");
301 for (const QString& subnet : subnets) {
302 if (socket()->peerAddress().isInSubnet(QHostAddress::parseSubnet(subnet))) {
303 _useProxyLine = true;
309 _useProxyLine = false;