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/*
* Copyright (C) 2008-2010 The QXmpp developers
*
* Author:
* Jeremy Lainé
*
* Source:
* http://code.google.com/p/qxmpp
*
* This file is a part of QXmpp library.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
*/
#ifndef QXMPPSTUN_H
#define QXMPPSTUN_H
#include <QObject>
#include "QXmppLogger.h"
#include "QXmppJingleIq.h"
class QDataStream;
class QUdpSocket;
class QTimer;
/// \brief The QXmppStunMessage class represents a STUN message.
///
class QXmppStunMessage
{
public:
QXmppStunMessage();
QByteArray id() const;
void setId(const QByteArray &id);
quint16 type() const;
void setType(quint16 type);
QByteArray encode(const QString &password = QString()) const;
bool decode(const QByteArray &buffer, const QString &password = QString(), QStringList *errors = 0);
QString toString() const;
static quint16 peekType(const QByteArray &buffer, QByteArray &id);
// attributes
int errorCode;
QString errorPhrase;
quint32 priority;
QByteArray iceControlling;
QByteArray iceControlled;
QHostAddress changedHost;
quint16 changedPort;
QHostAddress mappedHost;
quint16 mappedPort;
QHostAddress otherHost;
quint16 otherPort;
QHostAddress sourceHost;
quint16 sourcePort;
QHostAddress xorMappedHost;
quint16 xorMappedPort;
QString software;
QString username;
bool useCandidate;
private:
void addAddress(QDataStream &stream, quint16 type, const QHostAddress &host, quint16 port) const;
void setBodyLength(QByteArray &buffer, qint16 length) const;
QByteArray m_id;
quint16 m_type;
};
class QXmppStunSocket : public QObject
{
Q_OBJECT
public:
QXmppStunSocket(bool iceControlling, QObject *parent=0);
~QXmppStunSocket();
void setStunServer(const QHostAddress &host, quint16 port);
QList<QXmppJingleCandidate> localCandidates() const;
void setLocalUser(const QString &user);
void setLocalPassword(const QString &password);
int component() const;
void setComponent(int component);
bool addRemoteCandidate(const QXmppJingleCandidate &candidate);
void setRemoteUser(const QString &user);
void setRemotePassword(const QString &password);
bool bind();
void close();
void connectToHost();
bool isConnected() const;
qint64 writeDatagram(const QByteArray &datagram);
private slots:
void checkCandidates();
void readyRead();
signals:
// This signal is emitted once ICE negotiation succeeds.
void connected();
// This signal is emitted when a data packet is received.
void datagramReceived(const QByteArray &datagram);
// This signal is emitted when the list of local candidates changes.
void localCandidatesChanged();
/// This signal is emitted to send logging messages.
void logMessage(QXmppLogger::MessageType type, const QString &msg);
private:
class Pair {
public:
Pair();
QString toString() const;
QIODevice::OpenMode checked;
quint32 priority;
QXmppJingleCandidate remote;
QXmppJingleCandidate reflexive;
QByteArray transaction;
};
Pair *addRemoteCandidate(const QHostAddress &host, quint16 port);
void debug(const QString &message, QXmppLogger::MessageType = QXmppLogger::DebugMessage);
qint64 writeStun(const QXmppStunMessage &message, QXmppStunSocket::Pair *pair);
int m_component;
QList<QXmppJingleCandidate> m_localCandidates;
QString m_localUser;
QString m_localPassword;
Pair *m_activePair;
bool m_iceControlling;
QList<Pair*> m_pairs;
QString m_remoteUser;
QString m_remotePassword;
QUdpSocket *m_socket;
QTimer *m_timer;
// STUN server
bool m_stunDone;
QByteArray m_stunId;
QHostAddress m_stunHost;
quint16 m_stunPort;
};
/// \brief The QXmppIceConnection class represents an UDP socket capable
/// of performing Interactive Connectivity Establishment (RFC 5245).
///
class QXmppIceConnection : public QObject
{
Q_OBJECT
public:
QXmppIceConnection(bool controlling, QObject *parent = 0);
void addComponent(int component);
void setStunServer(const QString &hostName, quint16 port = 3478);
QList<QXmppJingleCandidate> localCandidates() const;
QString localUser() const;
QString localPassword() const;
void addRemoteCandidate(const QXmppJingleCandidate &candidate);
void setRemoteUser(const QString &user);
void setRemotePassword(const QString &password);
void close();
void connectToHost();
bool isConnected() const;
qint64 writeDatagram(int, const QByteArray &datagram);
signals:
// This signal is emitted once ICE negotiation succeeds.
void connected();
// This signal is emitted when a data packet is received.
void datagramReceived(int component, const QByteArray &datagram);
// This signal is emitted when the list of local candidates changes.
void localCandidatesChanged();
/// This signal is emitted to send logging messages.
void logMessage(QXmppLogger::MessageType type, const QString &msg);
private slots:
void slotConnected();
void slotDatagramReceived(const QByteArray &datagram);
private:
bool m_controlling;
QMap<int, QXmppStunSocket*> m_components;
QString m_localUser;
QString m_localPassword;
QHostAddress m_stunHost;
quint16 m_stunPort;
};
#endif
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