1 /***************************************************************************
2 * Copyright (C) 2005-2019 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 ***************************************************************************/
21 #include <QHostAddress>
26 # include <QSslSocket>
28 # include <QTcpSocket>
31 #include "remotepeer.h"
34 using namespace Protocol;
36 const quint32 maxMessageSize = 64 * 1024
37 * 1024; // This is uncompressed size. 64 MB should be enough for any sort of initData or backlog chunk
39 RemotePeer::RemotePeer(::AuthHandler* authHandler, QTcpSocket* socket, Compressor::CompressionLevel level, QObject* parent)
40 : Peer(authHandler, parent)
42 , _compressor(new Compressor(socket, level, this))
43 , _signalProxy(nullptr)
44 , _heartBeatTimer(new QTimer(this))
49 socket->setParent(this);
50 connect(socket, &QAbstractSocket::stateChanged, this, &RemotePeer::onSocketStateChanged);
51 connect(socket, selectOverload<QAbstractSocket::SocketError>(&QAbstractSocket::error), this, &RemotePeer::onSocketError);
52 connect(socket, &QAbstractSocket::disconnected, this, &Peer::disconnected);
55 auto* sslSocket = qobject_cast<QSslSocket*>(socket);
57 connect(sslSocket, &QSslSocket::encrypted, this, [this]() { emit secureStateChanged(true); });
61 connect(_compressor, &Compressor::readyRead, this, &RemotePeer::onReadyRead);
62 connect(_compressor, &Compressor::error, this, &RemotePeer::onCompressionError);
64 connect(_heartBeatTimer, &QTimer::timeout, this, &RemotePeer::sendHeartBeat);
67 void RemotePeer::onSocketStateChanged(QAbstractSocket::SocketState state)
69 if (state == QAbstractSocket::ClosingState) {
70 emit statusMessage(tr("Disconnecting..."));
74 void RemotePeer::onSocketError(QAbstractSocket::SocketError error)
76 emit socketError(error, socket()->errorString());
79 void RemotePeer::onCompressionError(Compressor::Error error)
81 close(QString("Compression error %1").arg(error));
84 QString RemotePeer::description() const
87 return socket()->peerAddress().toString();
92 QString RemotePeer::address() const
95 return socket()->peerAddress().toString();
100 quint16 RemotePeer::port() const
103 return socket()->peerPort();
108 ::SignalProxy* RemotePeer::signalProxy() const
113 void RemotePeer::setSignalProxy(::SignalProxy* proxy)
115 if (proxy == _signalProxy)
119 _heartBeatTimer->stop();
120 disconnect(signalProxy(), nullptr, this, nullptr);
121 _signalProxy = nullptr;
127 qWarning() << Q_FUNC_INFO << "Setting another SignalProxy not supported, ignoring!";
130 _signalProxy = proxy;
131 connect(proxy, &SignalProxy::heartBeatIntervalChanged, this, &RemotePeer::changeHeartBeatInterval);
132 _heartBeatTimer->setInterval(proxy->heartBeatInterval() * 1000);
133 _heartBeatTimer->start();
137 void RemotePeer::changeHeartBeatInterval(int secs)
140 _heartBeatTimer->stop();
142 _heartBeatTimer->setInterval(secs * 1000);
143 _heartBeatTimer->start();
147 int RemotePeer::lag() const
152 QTcpSocket* RemotePeer::socket() const
157 bool RemotePeer::isSecure() const
163 auto* sslSocket = qobject_cast<QSslSocket*>(socket());
164 if (sslSocket && sslSocket->isEncrypted())
171 bool RemotePeer::isLocal() const
174 if (socket()->peerAddress() == QHostAddress::LocalHost || socket()->peerAddress() == QHostAddress::LocalHostIPv6)
180 bool RemotePeer::isOpen() const
182 return socket() && socket()->state() == QTcpSocket::ConnectedState;
185 void RemotePeer::close(const QString& reason)
187 if (!reason.isEmpty()) {
188 qWarning() << "Disconnecting:" << reason;
191 if (socket() && socket()->state() != QTcpSocket::UnconnectedState) {
192 socket()->disconnectFromHost();
196 void RemotePeer::onReadyRead()
199 while (readMessage(msg)) {
200 if (SignalProxy::current())
201 SignalProxy::current()->setSourcePeer(this);
205 if (SignalProxy::current())
206 SignalProxy::current()->setSourcePeer(nullptr);
210 bool RemotePeer::readMessage(QByteArray& msg)
213 if (_compressor->bytesAvailable() < 4)
215 _compressor->read((char*)&_msgSize, 4);
216 _msgSize = qFromBigEndian<quint32>(_msgSize);
218 if (_msgSize > maxMessageSize) {
219 close("Peer tried to send package larger than max package size!");
224 close("Peer tried to send an empty message!");
229 if (_compressor->bytesAvailable() < _msgSize) {
230 emit transferProgress(socket()->bytesAvailable(), _msgSize);
234 emit transferProgress(_msgSize, _msgSize);
236 msg.resize(_msgSize);
237 qint64 bytesRead = _compressor->read(msg.data(), _msgSize);
238 if (bytesRead != _msgSize) {
239 close("Premature end of data stream!");
247 void RemotePeer::writeMessage(const QByteArray& msg)
249 auto size = qToBigEndian<quint32>(msg.size());
250 _compressor->write((const char*)&size, 4, Compressor::NoFlush);
251 _compressor->write(msg.constData(), msg.size());
254 void RemotePeer::handle(const HeartBeat& heartBeat)
256 dispatch(HeartBeatReply(heartBeat.timestamp));
259 void RemotePeer::handle(const HeartBeatReply& heartBeatReply)
262 emit lagUpdated(heartBeatReply.timestamp.msecsTo(QDateTime::currentDateTime().toUTC()) / 2);
265 void RemotePeer::sendHeartBeat()
267 if (signalProxy()->maxHeartBeatCount() > 0 && _heartBeatCount >= signalProxy()->maxHeartBeatCount()) {
268 qWarning() << "Disconnecting peer:" << description() << "(didn't receive a heartbeat for over"
269 << _heartBeatCount * _heartBeatTimer->interval() / 1000 << "seconds)";
271 _heartBeatTimer->stop();
275 if (_heartBeatCount > 0) {
276 _lag = _heartBeatCount * _heartBeatTimer->interval();
277 emit lagUpdated(_lag);
280 dispatch(HeartBeat(QDateTime::currentDateTime().toUTC()));