1 /***************************************************************************
2 * Copyright (C) 2005-2018 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 ***************************************************************************/
23 #include <QCoreApplication>
26 #include "coretransfer.h"
28 const qint64 chunkSize = 16 * 1024;
30 CoreTransfer::CoreTransfer(Direction direction, const QString &nick, const QString &fileName, const QHostAddress &address, quint16 port, quint64 fileSize, QObject *parent)
31 : Transfer(direction, nick, fileName, address, port, fileSize, parent),
40 quint64 CoreTransfer::transferred() const
46 void CoreTransfer::cleanUp()
50 _socket->deleteLater();
59 void CoreTransfer::onSocketDisconnected()
61 if (status() == Status::Connecting || status() == Status::Transferring) {
62 setError(tr("Socket closed while still transferring!"));
69 void CoreTransfer::onSocketError(QAbstractSocket::SocketError error)
73 if (status() == Status::Connecting || status() == Status::Transferring) {
74 setError(tr("DCC connection error: %1").arg(_socket->errorString()));
79 void CoreTransfer::requestAccepted(PeerPtr peer)
81 if (_peer || !peer || status() != Status::New)
82 return; // transfer was already accepted
85 setStatus(Status::Pending);
89 // FIXME temporary until we have queueing
94 void CoreTransfer::requestRejected(PeerPtr peer)
96 if (_peer || status() != Status::New)
100 setStatus(Status::Rejected);
106 void CoreTransfer::start()
108 if (!_peer || status() != Status::Pending || direction() != Direction::Receive)
111 setupConnectionForReceive();
115 void CoreTransfer::setupConnectionForReceive()
118 setError(tr("Reverse DCC not supported yet!"));
122 setStatus(Status::Connecting);
124 _socket = new QTcpSocket(this);
125 connect(_socket, SIGNAL(connected()), SLOT(startReceiving()));
126 connect(_socket, SIGNAL(disconnected()), SLOT(onSocketDisconnected()));
127 connect(_socket, SIGNAL(error(QAbstractSocket::SocketError)), SLOT(onSocketError(QAbstractSocket::SocketError)));
128 connect(_socket, SIGNAL(readyRead()), SLOT(onDataReceived()));
130 _socket->connectToHost(address(), port());
134 void CoreTransfer::startReceiving()
136 setStatus(Status::Transferring);
140 void CoreTransfer::onDataReceived()
142 if (_reading) // since we're spinning the event loop, we may get another readyRead() and thus reentrancy
146 while (_socket->bytesAvailable()) {
147 QByteArray data = _socket->read(chunkSize);
149 emit transferredChanged(transferred());
150 if (!relayData(data, true))
153 QCoreApplication::processEvents(); // don't block the rest of the core/client communication
154 if (!_socket) // just in case something happened during spinning the event loop that killed our socket
158 // Send ack to sender. The DCC protocol only specifies 32 bit values, but modern clients (i.e. those who can send files
159 // larger than 4 GB) will ignore this anyway...
160 quint32 ack = qToBigEndian((quint32)_pos);// qDebug() << Q_FUNC_INFO << _pos;
161 _socket->write((char *)&ack, 4);
163 if (_pos > fileSize()) {
164 qWarning() << "DCC Receive: Got more data than expected!";
165 setError(tr("DCC Receive: Got more data than expected!"));
167 else if (_pos == fileSize()) {
168 qDebug() << "DCC Receive: Transfer finished";
169 if (relayData(QByteArray(), false)) // empty buffer
170 setStatus(Status::Completed);
177 bool CoreTransfer::relayData(const QByteArray &data, bool requireChunkSize)
179 // safeguard against a disconnecting quasselclient
181 setError(tr("DCC Receive: Quassel Client disconnected during transfer!"));
184 _buffer.append(data);
186 // we only want to send data to the client once we have reached the chunksize
187 if (_buffer.size() > 0 && (_buffer.size() >= chunkSize || !requireChunkSize)) {
188 Peer *p = _peer.data();
189 SYNC_OTHER(dataReceived, ARG(p), ARG(_buffer));