summaryrefslogtreecommitdiff
path: root/src/network/socket/qsocks5socketengine_p.h
blob: 19560f014e59ad391095c4080d81c36906a04cc9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtNetwork module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QSOCKS5SOCKETENGINE_P_H
#define QSOCKS5SOCKETENGINE_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include "qabstractsocketengine_p.h"
#include "qnetworkproxy.h"

QT_BEGIN_NAMESPACE

#ifndef QT_NO_SOCKS5

class QSocks5SocketEnginePrivate;

class Q_AUTOTEST_EXPORT QSocks5SocketEngine : public QAbstractSocketEngine
{
    Q_OBJECT
public:
    QSocks5SocketEngine(QObject *parent = 0);
    ~QSocks5SocketEngine();

    bool initialize(QAbstractSocket::SocketType type, QAbstractSocket::NetworkLayerProtocol protocol = QAbstractSocket::IPv4Protocol);
    bool initialize(int socketDescriptor, QAbstractSocket::SocketState socketState = QAbstractSocket::ConnectedState);

    void setProxy(const QNetworkProxy &networkProxy);

    int socketDescriptor() const;

    bool isValid() const;

    bool connectInternal();
    bool connectToHost(const QHostAddress &address, quint16 port);
    bool connectToHostByName(const QString &name, quint16 port);
    bool bind(const QHostAddress &address, quint16 port);
    bool listen();
    int accept();
    void close();

    qint64 bytesAvailable() const;

    qint64 read(char *data, qint64 maxlen);
    qint64 write(const char *data, qint64 len);

#ifndef QT_NO_UDPSOCKET
    qint64 readDatagram(char *data, qint64 maxlen, QHostAddress *addr = 0,
        quint16 *port = 0);
    qint64 writeDatagram(const char *data, qint64 len, const QHostAddress &addr,
        quint16 port);
    bool hasPendingDatagrams() const;
    qint64 pendingDatagramSize() const;
#endif // QT_NO_UDPSOCKET

    int option(SocketOption option) const;
    bool setOption(SocketOption option, int value);

    bool waitForRead(int msecs = 30000, bool *timedOut = 0);
    bool waitForWrite(int msecs = 30000, bool *timedOut = 0);
    bool waitForReadOrWrite(bool *readyToRead, bool *readyToWrite,
                            bool checkRead, bool checkWrite,
                            int msecs = 30000, bool *timedOut = 0);

    bool isReadNotificationEnabled() const;
    void setReadNotificationEnabled(bool enable);
    bool isWriteNotificationEnabled() const;
    void setWriteNotificationEnabled(bool enable);
    bool isExceptionNotificationEnabled() const;
    void setExceptionNotificationEnabled(bool enable);

private:
    Q_DECLARE_PRIVATE(QSocks5SocketEngine)
    Q_DISABLE_COPY(QSocks5SocketEngine)
    Q_PRIVATE_SLOT(d_func(), void _q_controlSocketConnected())
    Q_PRIVATE_SLOT(d_func(), void _q_controlSocketReadNotification())
    Q_PRIVATE_SLOT(d_func(), void _q_controlSocketError(QAbstractSocket::SocketError))
#ifndef QT_NO_UDPSOCKET
    Q_PRIVATE_SLOT(d_func(), void _q_udpSocketReadNotification())
#endif
    Q_PRIVATE_SLOT(d_func(), void _q_controlSocketBytesWritten())
    Q_PRIVATE_SLOT(d_func(), void _q_emitPendingReadNotification())
    Q_PRIVATE_SLOT(d_func(), void _q_emitPendingWriteNotification())
    Q_PRIVATE_SLOT(d_func(), void _q_emitPendingConnectionNotification())
    Q_PRIVATE_SLOT(d_func(), void _q_controlSocketDisconnected())
    Q_PRIVATE_SLOT(d_func(), void _q_controlSocketStateChanged(QAbstractSocket::SocketState))

};


class QTcpSocket;

class QSocks5Authenticator
{
public:
    QSocks5Authenticator();
    virtual ~QSocks5Authenticator();
    virtual char methodId();
    virtual bool beginAuthenticate(QTcpSocket *socket, bool *completed);
    virtual bool continueAuthenticate(QTcpSocket *socket, bool *completed);

    virtual bool seal(const QByteArray buf, QByteArray *sealedBuf);
    virtual bool unSeal(const QByteArray sealedBuf, QByteArray *buf);
    virtual bool unSeal(QTcpSocket *sealedSocket, QByteArray *buf);

    virtual QString errorString() { return QString(); }
};

class QSocks5PasswordAuthenticator : public QSocks5Authenticator
{
public:
    QSocks5PasswordAuthenticator(const QString &userName, const QString &password);
    char methodId();
    bool beginAuthenticate(QTcpSocket *socket, bool *completed);
    bool continueAuthenticate(QTcpSocket *socket, bool *completed);

    QString errorString();

private:
    QString userName;
    QString password;
};

struct QSocks5Data;
struct QSocks5ConnectData;
struct QSocks5UdpAssociateData;
struct QSocks5BindData;

class QSocks5SocketEnginePrivate : public QAbstractSocketEnginePrivate
{
    Q_DECLARE_PUBLIC(QSocks5SocketEngine)
public:
    QSocks5SocketEnginePrivate();
    ~QSocks5SocketEnginePrivate();

   enum Socks5State
    {
        Uninitialized = 0,
        ConnectError,
        AuthenticationMethodsSent,
        Authenticating,
        AuthenticatingError,
        RequestMethodSent,
        RequestError,
        Connected,
        UdpAssociateSuccess,
        BindSuccess,
        ControlSocketError,
        SocksError,
        HostNameLookupError
    };
    Socks5State socks5State;

    enum Socks5Mode
    {
        NoMode,
        ConnectMode,
        BindMode,
        UdpAssociateMode
    };
    Socks5Mode mode;

    enum Socks5Error
    {
        SocksFailure = 0x01,
        ConnectionNotAllowed = 0x02,
        NetworkUnreachable = 0x03,
        HostUnreachable = 0x04,
        ConnectionRefused = 0x05,
        TTLExpired = 0x06,
        CommandNotSupported = 0x07,
        AddressTypeNotSupported = 0x08,
        LastKnownError = AddressTypeNotSupported,
        UnknownError
    };

    void initialize(Socks5Mode socks5Mode);

    void setErrorState(Socks5State state, const QString &extraMessage = QString());
    void setErrorState(Socks5State state, Socks5Error socks5error);

    void reauthenticate();
    void parseAuthenticationMethodReply();
    void parseAuthenticatingReply();
    void sendRequestMethod();
    void parseRequestMethodReply();
    void parseNewConnection();

    bool waitForConnected(int msecs, bool *timedOut);

    void _q_controlSocketConnected();
    void _q_controlSocketReadNotification();
    void _q_controlSocketError(QAbstractSocket::SocketError);
#ifndef QT_NO_UDPSOCKET
    void checkForDatagrams() const;
    void _q_udpSocketReadNotification();
#endif
    void _q_controlSocketBytesWritten();
    void _q_controlSocketDisconnected();
    void _q_controlSocketStateChanged(QAbstractSocket::SocketState);

    QNetworkProxy proxyInfo;

    bool readNotificationEnabled, writeNotificationEnabled, exceptNotificationEnabled;

    int socketDescriptor;

    QSocks5Data *data;
    QSocks5ConnectData *connectData;
#ifndef QT_NO_UDPSOCKET
    QSocks5UdpAssociateData *udpData;
#endif
    QSocks5BindData *bindData;
    QString peerName;

    mutable bool readNotificationActivated;
    mutable bool writeNotificationActivated;

    bool readNotificationPending;
    void _q_emitPendingReadNotification();
    void emitReadNotification();
    bool writeNotificationPending;
    void _q_emitPendingWriteNotification();
    void emitWriteNotification();
    bool connectionNotificationPending;
    void _q_emitPendingConnectionNotification();
    void emitConnectionNotification();
};

class Q_AUTOTEST_EXPORT QSocks5SocketEngineHandler : public QSocketEngineHandler
{
public:
    virtual QAbstractSocketEngine *createSocketEngine(QAbstractSocket::SocketType socketType,
                                                      const QNetworkProxy &, QObject *parent);
    virtual QAbstractSocketEngine *createSocketEngine(int socketDescripter, QObject *parent);
};


QT_END_NAMESPACE
#endif // QT_NO_SOCKS5
#endif // QSOCKS5SOCKETENGINE_H