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/*
securestream.h - Kopete Groupwise Protocol
Combines a ByteStream with TLS and SASL
Copyright (c) 2004 SUSE Linux AG http://www.suse.com
Based on Iris, Copyright (C) 2003 Justin Karneges
Kopete (c) 2002-2004 by the Kopete developers <kopete-devel@kde.org>
*************************************************************************
* *
* 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 of the License, or (at your option) any later version. *
* *
*************************************************************************
*/
#ifndef SECURESTREAM_H
#define SECURESTREAM_H
#include<qca.h>
#include "tlshandler.h"
#include"bytestream.h"
#define USE_TLSHANDLER
#ifdef USE_TLSHANDLER
class TLSHandler;
#endif
class SecureStream : public ByteStream
{
Q_OBJECT
public:
enum Error { ErrTLS = ErrCustom, ErrSASL };
SecureStream(ByteStream *s);
~SecureStream();
void startTLSClient(QCA::TLS *t, const QByteArray &spare=QByteArray());
void startTLSServer(QCA::TLS *t, const QByteArray &spare=QByteArray());
void setLayerSASL(QCA::SASL *s, const QByteArray &spare=QByteArray());
#ifdef USE_TLSHANDLER
void startTLSClient(TLSHandler *t, const QString &server, const QByteArray &spare=QByteArray());
#endif
void closeTLS();
int errorCode() const;
// reimplemented
bool isOpen() const;
void write(const QByteArray &);
int bytesToWrite() const;
signals:
void tlsHandshaken();
void tlsClosed();
private slots:
void bs_readyRead();
void bs_bytesWritten(int);
void layer_tlsHandshaken();
void layer_tlsClosed(const QByteArray &);
void layer_readyRead(const QByteArray &);
void layer_needWrite(const QByteArray &);
void layer_error(int);
private:
void linkLayer(QObject *);
int calcPrebytes() const;
void insertData(const QByteArray &a);
void writeRawData(const QByteArray &a);
void incomingData(const QByteArray &a);
class Private;
Private *d;
};
class LayerTracker
{
public:
struct Item
{
int plain;
int encoded;
};
USE_TLSHANDLER
LayerTracker();
void reset();
void addPlain(int plain);
void specifyEncoded(int encoded, int plain);
int finished(int encoded);
int p;
QValueList<Item> list;
};
class SecureLayer : public QObject
{
Q_OBJECT
public:
SecureLayer(QCA::TLS *t);
SecureLayer(QCA::SASL *s);
#ifdef USE_TLSHANDLER
SecureLayer(TLSHandler *t);
#endif
void init();
void write(const QByteArray &a);
void writeIncoming(const QByteArray &a);
int finished(int plain);
enum { TLS, SASL, TLSH };
int type;
union {
QCA::TLS *tls;
QCA::SASL *sasl;
#ifdef USE_TLSHANDLER
TLSHandler *tlsHandler;
#endif
} p;
LayerTracker layer;
bool tls_done;
int prebytes;
signals:
void tlsHandshaken();
void tlsClosed(const QByteArray &);
void readyRead(const QByteArray &);
void needWrite(const QByteArray &);
void error(int);
private slots:
void tls_handshaken();
void tls_readyRead();
void tls_readyReadOutgoing(int plainBytes);
void tls_closed();
void tls_error(int x);
void sasl_readyRead();
void sasl_readyReadOutgoing(int plainBytes);
void sasl_error(int x);
#ifdef USE_TLSHANDLER
void tlsHandler_success();
void tlsHandler_fail();
void tlsHandler_closed();
void tlsHandler_readyRead(const QByteArray &a);
void tlsHandler_readyReadOutgoing(const QByteArray &a, int plainBytes);
#endif
};
#endif
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