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#include "qplatformdefs.h"

#include "qwssocket_qws.h"

#ifndef QT_NO_QWS_MULTIPROCESS

#include <fcntl.h>

#include <netdb.h>

#include <errno.h>

#include <stdio.h>

#include <sys/file.h>

#include <sys/time.h>

#include <sys/un.h>

#ifdef __MIPSEL__

# ifndef SOCK_DGRAM

#  define SOCK_DGRAM 1

# endif

# ifndef SOCK_STREAM

#  define SOCK_STREAM 2

# endif

#endif

#if defined(Q_OS_SOLARIS) || defined (QT_LINUXBASE)

// uff-da apparently Solaris doesn't have the SUN_LEN macro, here is

// an implementation of it...

#  ifndef SUN_LEN

#    define SUN_LEN(su) \

            sizeof(*(su)) - sizeof((su)->sun_path) + strlen((su)->sun_path)

#  endif

// nor the POSIX names of UNIX domain sockets *sigh*

#  ifndef AF_LOCAL

#    define AF_LOCAL        AF_UNIX

#  endif

#  ifndef PF_LOCAL

#    define PF_LOCAL        PF_UNIX

#  endif

#endif // Q_OS_SOLARIS || QT_LINUXBASE

QT_BEGIN_NAMESPACE

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

 *

 * QWSSocket

 *

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

QWSSocket::QWSSocket(QObject *parent)

    : QWS_SOCK_BASE(parent)

{

#ifndef QT_NO_SXE

    QObject::connect( this, SIGNAL(stateChanged(SocketState)),

            this, SLOT(forwardStateChange(SocketState)));

#endif

}

QWSSocket::~QWSSocket()

{

}

#ifndef QT_NO_SXE

QString QWSSocket::errorString()

{

    switch (QUnixSocket::error()) {

    case NoError:

        return QString();

    case InvalidPath:

    case NonexistentPath:

        return QLatin1String("Bad path"); // NO_TR

    default:

        return QLatin1String("Bad socket"); // NO TR

    }

}

void QWSSocket::forwardStateChange(QUnixSocket::SocketState st  )

{

    switch ( st )

    {

        case ConnectedState:

            emit connected();

            break;

        case ClosingState:

            break;

        case UnconnectedState:

            emit disconnected();

            break;

        default:

            // nothing

            break;

    }

    if ( QUnixSocket::error() != NoError )

        emit error((QAbstractSocket::SocketError)0);

}

#endif

bool QWSSocket::connectToLocalFile(const QString &file)

{

#ifndef QT_NO_SXE

    bool result = QUnixSocket::connect( file.toLocal8Bit() );

    if ( !result )

    {

        perror( "QWSSocketAuth::connectToLocalFile could not connect:" );

        emit error(QAbstractSocket::ConnectionRefusedError);

        return false;

    }

    return true;

#else

    // create socket

    int s = ::socket(PF_LOCAL, SOCK_STREAM, 0);

    // connect to socket

    struct sockaddr_un a;

    memset(&a, 0, sizeof(a));

    a.sun_family = PF_LOCAL;

    strncpy(a.sun_path, file.toLocal8Bit().constData(), sizeof(a.sun_path) - 1);

    int r = ::connect(s, (struct sockaddr*)&a, SUN_LEN(&a));

    if (r == 0) {

        setSocketDescriptor(s);

    } else {

        perror("QWSSocket::connectToLocalFile could not connect:");

        ::close(s);

        emit error(ConnectionRefusedError);

        return false;

    }

#endif

    return true;

}

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

 *

 * QWSServerSocket

 *

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

QWSServerSocket::QWSServerSocket(const QString& file, QObject *parent)

#ifndef QT_NO_SXE

    : QUnixSocketServer(parent)

#else

    : QTcpServer(parent)

#endif

{

    init(file);

}

void QWSServerSocket::init(const QString &file)

{

#ifndef QT_NO_SXE

    QByteArray fn = file.toLocal8Bit();

    bool result = QUnixSocketServer::listen( fn );

    if ( !result )

    {

        QUnixSocketServer::ServerError err = serverError();

        switch ( err )

        {

            case InvalidPath:

                qWarning("QWSServerSocket:: invalid path %s", qPrintable(file));

                break;

            case ResourceError:

            case BindError:

            case ListenError:

                qWarning("QWSServerSocket:: could not listen on path %s", qPrintable(file));

                break;

            default:

                break;

        }

    }

#else

    int backlog = 16; //#####

// create socket

    int s = ::socket(PF_LOCAL, SOCK_STREAM, 0);

    if (s == -1) {

        perror("QWSServerSocket::init");

        qWarning("QWSServerSocket: unable to create socket.");

        return;

    }

    QByteArray fn = file.toLocal8Bit();

    unlink(fn.constData()); // doesn't have to succeed

    // bind socket

    struct sockaddr_un a;

    memset(&a, 0, sizeof(a));

    a.sun_family = PF_LOCAL;

    strncpy(a.sun_path, fn.constData(), sizeof(a.sun_path) - 1);

    int r = ::bind(s, (struct sockaddr*)&a, SUN_LEN(&a));

    if (r < 0) {

        perror("QWSServerSocket::init");

        qWarning("QWSServerSocket: could not bind to file %s", fn.constData());

        ::close(s);

        return;

    }

    if (chmod(fn.constData(), 0600) < 0) {

        perror("QWSServerSocket::init");

        qWarning("Could not set permissions of %s", fn.constData());

        ::close(s);

        return;

    }

    // listen

    if (::listen(s, backlog) == 0) {

        if (!setSocketDescriptor(s))

            qWarning( "QWSServerSocket could not set descriptor %d : %s", s, errorString().toLatin1().constData());

    } else {

        perror("QWSServerSocket::init");

        qWarning("QWSServerSocket: could not listen to file %s", fn.constData());

        ::close(s);

    }

#endif

}

QWSServerSocket::~QWSServerSocket()

{

}

#ifndef QT_NO_SXE

void QWSServerSocket::incomingConnection(int socketDescriptor)

{

    inboundConnections.append( socketDescriptor );

    emit newConnection();

}

QWSSocket *QWSServerSocket::nextPendingConnection()

{

    QMutexLocker locker( &ssmx );

    if ( inboundConnections.count() == 0 )

        return 0;

    QWSSocket *s = new QWSSocket();

    s->setSocketDescriptor( inboundConnections.takeFirst() );

    return s;

}

#endif // QT_NO_SXE

QT_END_NAMESPACE

#endif  //QT_NO_QWS_MULTIPROCESS