/****************************************************************************

**

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtGui 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 Technology Preview License Agreement accompanying

** this package.

**

** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

#ifndef QUNIXSOCKET_P_H

#define QUNIXSOCKET_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 <QtNetwork/qabstractsocket.h>

#include <QtCore/qiodevice.h>

#include <QtCore/qlist.h>

#include <QtCore/qshareddata.h>

extern "C" {

#include <sys/types.h>

};

QT_BEGIN_NAMESPACE

class QUnixSocketRights;

class QUnixSocketRightsPrivate;

class QUnixSocketPrivate;

class QUnixSocketMessagePrivate;

struct iovec;

class Q_GUI_EXPORT QUnixSocketRights {

public:

    QUnixSocketRights(int);

    ~QUnixSocketRights();

    QUnixSocketRights(const QUnixSocketRights &);

    QUnixSocketRights & operator=(const QUnixSocketRights &);

    bool isValid() const;

    int dupFd() const;

    int peekFd() const;

private:

    friend class QUnixSocket;

    QUnixSocketRights(int,int);

    QSharedDataPointer<QUnixSocketRightsPrivate> d;

};

class Q_GUI_EXPORT QUnixSocketMessage {

public:

    QUnixSocketMessage();

    QUnixSocketMessage(const QByteArray &);

    QUnixSocketMessage(const QByteArray &, const QList<QUnixSocketRights> &);

    QUnixSocketMessage(const QUnixSocketMessage &);

    QUnixSocketMessage(const iovec*, int);

    QUnixSocketMessage & operator=(const QUnixSocketMessage &);

    ~QUnixSocketMessage();

    void setBytes(const QByteArray &);

    void setRights(const QList<QUnixSocketRights> &);

    const QList<QUnixSocketRights> & rights() const;

    bool rightsWereTruncated() const;

    const QByteArray & bytes() const;

    pid_t processId() const;

    uid_t userId() const;

    gid_t groupId() const;

    void setProcessId(pid_t);

    void setUserId(uid_t);

    void setGroupId(gid_t);

    bool isValid() const;

private:

    friend class QUnixSocket;

    friend class QUnixSocketPrivate;

    QSharedDataPointer<QUnixSocketMessagePrivate> d;

};

class Q_GUI_EXPORT QUnixSocket : public QIODevice

{

    Q_OBJECT

public:

    QUnixSocket(QObject * = 0);

    QUnixSocket(qint64, qint64, QObject * = 0);

    virtual ~QUnixSocket();

    enum SocketState {

        UnconnectedState = QAbstractSocket::UnconnectedState,

        HostLookupState = QAbstractSocket::HostLookupState,

        ConnectingState = QAbstractSocket::ConnectingState,

        ConnectedState = QAbstractSocket::ConnectedState,

        BoundState = QAbstractSocket::BoundState,

        ClosingState = QAbstractSocket::ClosingState,

        ListeningState = QAbstractSocket::ListeningState,

    };

    enum SocketError { NoError, InvalidPath, ResourceError,

                       NonexistentPath, ConnectionRefused, UnknownError,

                       ReadFailure, WriteFailure };

    bool connect(const QByteArray & path);

    bool setSocketDescriptor(int socketDescriptor);

    int socketDescriptor() const;

    void abort();

    void close();

    bool flush();

    SocketError error() const;

    SocketState state() const;

    QByteArray address() const;

    qint64 bytesAvailable() const;

    qint64 bytesToWrite() const;

    qint64 readBufferSize() const;

    void setReadBufferSize(qint64 size);

    qint64 rightsBufferSize() const;

    void setRightsBufferSize(qint64 size);

    bool canReadLine() const;

    qint64 write(const char * data, qint64 maxSize)

    { return QIODevice::write(data, maxSize); }

    qint64 write(const QByteArray & byteArray)

    { return QIODevice::write(byteArray); }

    qint64 read(char * data, qint64 maxSize)

    { return QIODevice::read(data, maxSize); }

    QByteArray read(qint64 maxSize)

    { return QIODevice::read(maxSize); }

    qint64 write(const QUnixSocketMessage &);

    QUnixSocketMessage read();

    virtual bool isSequential() const;

    virtual bool waitForReadyRead(int msec = 300);

    virtual bool waitForBytesWritten(int msec = 300);

Q_SIGNALS:

    void stateChanged(SocketState socketState);

protected:

    virtual qint64 readData(char * data, qint64 maxSize);

    virtual qint64 writeData (const char * data, qint64 maxSize);

private:

    QUnixSocket(const QUnixSocket &);

    QUnixSocket & operator=(const QUnixSocket &);

    QUnixSocketPrivate * d;

};

QT_END_NAMESPACE

#endif // QUNIXSOCKET_P_H