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 ***************************************************************************/
21 #include "coretransfer.h"
23 #include <QCoreApplication>
29 const qint64 chunkSize = 16 * 1024;
31 CoreTransfer::CoreTransfer(Direction direction,
33 const QString& fileName,
34 const QHostAddress& address,
38 : Transfer(direction, nick, fileName, address, port, fileSize, parent)
44 quint64 CoreTransfer::transferred() const
49 void CoreTransfer::cleanUp()
53 _socket->deleteLater();
61 void CoreTransfer::onSocketDisconnected()
63 if (status() == Status::Connecting || status() == Status::Transferring) {
64 setError(tr("Socket closed while still transferring!"));
70 void CoreTransfer::onSocketError(QAbstractSocket::SocketError error)
74 if (status() == Status::Connecting || status() == Status::Transferring) {
75 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
93 void CoreTransfer::requestRejected(PeerPtr peer)
95 if (_peer || status() != Status::New)
99 setStatus(Status::Rejected);
104 void CoreTransfer::start()
106 if (!_peer || status() != Status::Pending || direction() != Direction::Receive)
109 setupConnectionForReceive();
112 void CoreTransfer::setupConnectionForReceive()
115 setError(tr("Reverse DCC not supported yet!"));
119 setStatus(Status::Connecting);
121 _socket = new QTcpSocket(this);
122 connect(_socket, &QAbstractSocket::connected, this, &CoreTransfer::startReceiving);
123 connect(_socket, &QAbstractSocket::disconnected, this, &CoreTransfer::onSocketDisconnected);
124 connect(_socket, selectOverload<QAbstractSocket::SocketError>(&QAbstractSocket::error), this, &CoreTransfer::onSocketError);
125 connect(_socket, &QIODevice::readyRead, this, &CoreTransfer::onDataReceived);
127 _socket->connectToHost(address(), port());
130 void CoreTransfer::startReceiving()
132 setStatus(Status::Transferring);
135 void CoreTransfer::onDataReceived()
137 if (_reading) // since we're spinning the event loop, we may get another readyRead() and thus reentrancy
141 while (_socket->bytesAvailable()) {
142 QByteArray data = _socket->read(chunkSize);
144 emit transferredChanged(transferred());
145 if (!relayData(data, true))
148 QCoreApplication::processEvents(); // don't block the rest of the core/client communication
149 if (!_socket) // just in case something happened during spinning the event loop that killed our socket
153 // Send ack to sender. The DCC protocol only specifies 32 bit values, but modern clients (i.e. those who can send files
154 // larger than 4 GB) will ignore this anyway...
155 quint32 ack = qToBigEndian((quint32)_pos); // qDebug() << Q_FUNC_INFO << _pos;
156 _socket->write((char*)&ack, 4);
158 if (_pos > fileSize()) {
159 qWarning() << "DCC Receive: Got more data than expected!";
160 setError(tr("DCC Receive: Got more data than expected!"));
162 else if (_pos == fileSize()) {
163 qDebug() << "DCC Receive: Transfer finished";
164 if (relayData(QByteArray(), false)) // empty buffer
165 setStatus(Status::Completed);
171 bool CoreTransfer::relayData(const QByteArray& data, bool requireChunkSize)
173 // safeguard against a disconnecting quasselclient
175 setError(tr("DCC Receive: Quassel Client disconnected during transfer!"));
178 _buffer.append(data);
180 // we only want to send data to the client once we have reached the chunksize
181 if (_buffer.size() > 0 && (_buffer.size() >= chunkSize || !requireChunkSize)) {
182 Peer* p = _peer.data();
183 SYNC_OTHER(dataReceived, ARG(p), ARG(_buffer));