/***************************************************************************
- * Copyright (C) 2005-2013 by the Quassel Project *
+ * Copyright (C) 2005-2022 by the Quassel Project *
* devel@quassel-irc.org *
* *
* This program is free software; you can redistribute it and/or modify *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
+#include <utility>
+
+#include <QtEndian>
+
#include <QHostAddress>
+#include <QSslSocket>
#include <QTimer>
-#ifdef HAVE_SSL
-# include <QSslSocket>
-#else
-# include <QTcpSocket>
-#endif
-
+#include "proxyline.h"
#include "remotepeer.h"
+#include "util.h"
using namespace Protocol;
-RemotePeer::RemotePeer(QTcpSocket *socket, QObject *parent)
- : Peer(parent),
- _socket(socket),
- _signalProxy(0),
- _heartBeatTimer(new QTimer(this)),
- _heartBeatCount(0),
- _lag(0)
+const quint32 maxMessageSize = 64 * 1024
+ * 1024; // This is uncompressed size. 64 MB should be enough for any sort of initData or backlog chunk
+
+RemotePeer::RemotePeer(::AuthHandler* authHandler, QTcpSocket* socket, Compressor::CompressionLevel level, QObject* parent)
+ : Peer(authHandler, parent)
+ , _socket(socket)
+ , _compressor(new Compressor(socket, level, this))
+ , _signalProxy(nullptr)
+ , _proxyLine({})
+ , _useProxyLine(false)
+ , _heartBeatTimer(new QTimer(this))
+ , _heartBeatCount(0)
+ , _lag(0)
+ , _msgSize(0)
{
socket->setParent(this);
- connect(socket, SIGNAL(disconnected()), SIGNAL(disconnected()));
- connect(socket, SIGNAL(error(QAbstractSocket::SocketError)), SIGNAL(error(QAbstractSocket::SocketError)));
+ connect(socket, &QAbstractSocket::stateChanged, this, &RemotePeer::onSocketStateChanged);
+ connect(socket, selectOverload<QAbstractSocket::SocketError>(&QAbstractSocket::error), this, &RemotePeer::onSocketError);
+ connect(socket, &QAbstractSocket::disconnected, this, &Peer::disconnected);
+
+ auto* sslSocket = qobject_cast<QSslSocket*>(socket);
+ if (sslSocket) {
+ connect(sslSocket, &QSslSocket::encrypted, this, [this]() { emit secureStateChanged(true); });
+ }
-#ifdef HAVE_SSL
- QSslSocket *sslSocket = qobject_cast<QSslSocket *>(socket);
- if (sslSocket)
- connect(sslSocket, SIGNAL(encrypted()), SIGNAL(secureStateChanged()));
-#endif
+ connect(_compressor, &Compressor::readyRead, this, &RemotePeer::onReadyRead);
+ connect(_compressor, &Compressor::error, this, &RemotePeer::onCompressionError);
+
+ connect(_heartBeatTimer, &QTimer::timeout, this, &RemotePeer::sendHeartBeat);
+}
+
+void RemotePeer::onSocketStateChanged(QAbstractSocket::SocketState state)
+{
+ if (state == QAbstractSocket::ClosingState) {
+ emit statusMessage(tr("Disconnecting..."));
+ }
+}
- connect(_heartBeatTimer, SIGNAL(timeout()), SLOT(sendHeartBeat()));
+void RemotePeer::onSocketError(QAbstractSocket::SocketError error)
+{
+ emit socketError(error, socket()->errorString());
}
+void RemotePeer::onCompressionError(Compressor::Error error)
+{
+ close(QString("Compression error %1").arg(error));
+}
QString RemotePeer::description() const
{
- if (socket())
- return socket()->peerAddress().toString();
+ return address();
+}
- return QString();
+QHostAddress RemotePeer::hostAddress() const
+{
+ if (_useProxyLine) {
+ return _proxyLine.sourceHost;
+ }
+ else if (socket()) {
+ return socket()->peerAddress();
+ }
+
+ return {};
}
+QString RemotePeer::address() const
+{
+ QHostAddress address = hostAddress();
+ if (address.isNull()) {
+ return {};
+ }
+ else {
+ return address.toString();
+ }
+}
-::SignalProxy *RemotePeer::signalProxy() const
+quint16 RemotePeer::port() const
{
- return _signalProxy;
+ if (_useProxyLine) {
+ return _proxyLine.sourcePort;
+ }
+ else if (socket()) {
+ return socket()->peerPort();
+ }
+
+ return 0;
}
+::SignalProxy* RemotePeer::signalProxy() const
+{
+ return _signalProxy;
+}
-void RemotePeer::setSignalProxy(::SignalProxy *proxy)
+void RemotePeer::setSignalProxy(::SignalProxy* proxy)
{
if (proxy == _signalProxy)
return;
if (!proxy) {
_heartBeatTimer->stop();
- disconnect(signalProxy(), 0, this, 0);
- _signalProxy = 0;
+ disconnect(signalProxy(), nullptr, this, nullptr);
+ _signalProxy = nullptr;
if (isOpen())
close();
}
return;
}
_signalProxy = proxy;
- connect(proxy, SIGNAL(heartBeatIntervalChanged(int)), SLOT(changeHeartBeatInterval(int)));
+ connect(proxy, &SignalProxy::heartBeatIntervalChanged, this, &RemotePeer::changeHeartBeatInterval);
_heartBeatTimer->setInterval(proxy->heartBeatInterval() * 1000);
_heartBeatTimer->start();
}
}
-
void RemotePeer::changeHeartBeatInterval(int secs)
{
- if(secs <= 0)
+ if (secs <= 0)
_heartBeatTimer->stop();
else {
_heartBeatTimer->setInterval(secs * 1000);
}
}
-
int RemotePeer::lag() const
{
return _lag;
}
-
-QTcpSocket *RemotePeer::socket() const
+QTcpSocket* RemotePeer::socket() const
{
return _socket;
}
-
bool RemotePeer::isSecure() const
{
if (socket()) {
if (isLocal())
return true;
-#ifdef HAVE_SSL
- QSslSocket *sslSocket = qobject_cast<QSslSocket *>(socket());
+ auto* sslSocket = qobject_cast<QSslSocket*>(socket());
if (sslSocket && sslSocket->isEncrypted())
return true;
-#endif
}
return false;
}
-
bool RemotePeer::isLocal() const
{
- if (socket()) {
- if (socket()->peerAddress() == QHostAddress::LocalHost || socket()->peerAddress() == QHostAddress::LocalHostIPv6)
- return true;
- }
- return false;
+ return hostAddress() == QHostAddress::LocalHost ||
+ hostAddress() == QHostAddress::LocalHostIPv6;
}
-
bool RemotePeer::isOpen() const
{
return socket() && socket()->state() == QTcpSocket::ConnectedState;
}
-
-void RemotePeer::close(const QString &reason)
+void RemotePeer::close(const QString& reason)
{
if (!reason.isEmpty()) {
qWarning() << "Disconnecting:" << reason;
}
}
+void RemotePeer::onReadyRead()
+{
+ QByteArray msg;
+ while (readMessage(msg)) {
+ if (SignalProxy::current())
+ SignalProxy::current()->setSourcePeer(this);
+
+ processMessage(msg);
-void RemotePeer::handle(const HeartBeat &heartBeat)
+ if (SignalProxy::current())
+ SignalProxy::current()->setSourcePeer(nullptr);
+ }
+}
+
+bool RemotePeer::readMessage(QByteArray& msg)
{
- dispatch(HeartBeatReply(heartBeat.timestamp()));
+ if (_msgSize == 0) {
+ if (_compressor->bytesAvailable() < 4)
+ return false;
+ _compressor->read((char*) &_msgSize, 4);
+ _msgSize = qFromBigEndian<quint32>(_msgSize);
+
+ if (_msgSize > maxMessageSize) {
+ close("Peer tried to send package larger than max package size!");
+ return false;
+ }
+
+ if (_msgSize == 0) {
+ close("Peer tried to send an empty message!");
+ return false;
+ }
+ }
+
+ if (_compressor->bytesAvailable() < _msgSize) {
+ emit transferProgress(socket()->bytesAvailable(), _msgSize);
+ return false;
+ }
+
+ emit transferProgress(_msgSize, _msgSize);
+
+ msg.resize(_msgSize);
+ qint64 bytesRead = _compressor->read(msg.data(), _msgSize);
+ if (bytesRead != _msgSize) {
+ close("Premature end of data stream!");
+ return false;
+ }
+
+ _msgSize = 0;
+ return true;
}
+void RemotePeer::writeMessage(const QByteArray& msg)
+{
+ auto size = qToBigEndian<quint32>(msg.size());
+ _compressor->write((const char*)&size, 4, Compressor::NoFlush);
+ _compressor->write(msg.constData(), msg.size());
+}
-void RemotePeer::handle(const HeartBeatReply &heartBeatReply)
+void RemotePeer::handle(const HeartBeat& heartBeat)
{
- _heartBeatCount = 0;
- emit lagUpdated(heartBeatReply.timestamp().msecsTo(QDateTime::currentDateTime().toUTC()) / 2);
+ dispatch(HeartBeatReply(heartBeat.timestamp));
}
+void RemotePeer::handle(const HeartBeatReply& heartBeatReply)
+{
+ _heartBeatCount = 0;
+ emit lagUpdated(heartBeatReply.timestamp.msecsTo(QDateTime::currentDateTime().toUTC()) / 2);
+}
void RemotePeer::sendHeartBeat()
{
if (signalProxy()->maxHeartBeatCount() > 0 && _heartBeatCount >= signalProxy()->maxHeartBeatCount()) {
- qWarning() << "Disconnecting peer:" << description()
- << "(didn't receive a heartbeat for over" << _heartBeatCount *_heartBeatTimer->interval() / 1000 << "seconds)";
+ qWarning() << "Disconnecting peer:" << description() << "(didn't receive a heartbeat for over"
+ << _heartBeatCount * _heartBeatTimer->interval() / 1000 << "seconds)";
socket()->close();
_heartBeatTimer->stop();
return;
dispatch(HeartBeat(QDateTime::currentDateTime().toUTC()));
++_heartBeatCount;
}
+
+void RemotePeer::setProxyLine(ProxyLine proxyLine)
+{
+ _proxyLine = std::move(proxyLine);
+
+ if (socket()) {
+ if (_proxyLine.protocol != QAbstractSocket::UnknownNetworkLayerProtocol) {
+ QList<QString> subnets = Quassel::optionValue("proxy-cidr").split(",");
+ for (const QString& subnet : subnets) {
+ if (socket()->peerAddress().isInSubnet(QHostAddress::parseSubnet(subnet))) {
+ _useProxyLine = true;
+ return;
+ }
+ }
+ }
+ }
+ _useProxyLine = false;
+}
projects / quassel.git / blobdiff