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

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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

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** This file is part of the QtNetwork module of the Qt Toolkit.

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** 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

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** $QT_END_LICENSE$

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

#ifndef QNET_UNIX_P_H

#define QNET_UNIX_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists for the convenience

// of Qt code on Unix. This header file may change from version to

// version to version without notice, or even be removed.

//

// We mean it.

//

#include "private/qcore_unix_p.h"

#include <sys/types.h>

#include <sys/socket.h>

#include <netinet/in.h>

#if defined(Q_OS_VXWORKS)

#  include <sockLib.h>

#endif

// for inet_addr

#include <netdb.h>

#include <arpa/inet.h>

#if defined(Q_OS_VXWORKS)

#  include <hostLib.h>

#else

#  include <resolv.h>

#endif

QT_BEGIN_NAMESPACE

// Almost always the same. If not, specify in qplatformdefs.h.

#if !defined(QT_SOCKOPTLEN_T)

# define QT_SOCKOPTLEN_T QT_SOCKLEN_T

#endif

// UnixWare 7 redefines socket -> _socket

static inline int qt_safe_socket(int domain, int type, int protocol, int flags = 0)

{

    Q_ASSERT((flags & ~O_NONBLOCK) == 0);

    register int fd;

#if defined(SOCK_CLOEXEC) && defined(SOCK_NONBLOCK)

    int newtype = type | SOCK_CLOEXEC;

    if (flags & O_NONBLOCK)

        newtype |= SOCK_NONBLOCK;

    fd = ::socket(domain, newtype, protocol);

    if (fd != -1 || errno != EINVAL)

        return fd;

#endif

    fd = ::socket(domain, type, protocol);

    if (fd == -1)

        return -1;

    ::fcntl(fd, F_SETFD, FD_CLOEXEC);

    // set non-block too?

    if (flags & O_NONBLOCK)

        ::fcntl(fd, F_SETFL, ::fcntl(fd, F_GETFL) | O_NONBLOCK);

    return fd;

}

// Tru64 redefines accept -> _accept with _XOPEN_SOURCE_EXTENDED

static inline int qt_safe_accept(int s, struct sockaddr *addr, QT_SOCKLEN_T *addrlen, int flags = 0)

{

    Q_ASSERT((flags & ~O_NONBLOCK) == 0);

    register int fd;

#if QT_UNIX_SUPPORTS_THREADSAFE_CLOEXEC && defined(SOCK_CLOEXEC) && defined(SOCK_NONBLOCK)

    // use accept4

    int sockflags = SOCK_CLOEXEC;

    if (flags & O_NONBLOCK)

        sockflags |= SOCK_NONBLOCK;

    fd = ::accept4(s, addr, static_cast<QT_SOCKLEN_T *>(addrlen), sockflags);

    if (fd != -1 || !(errno == ENOSYS || errno == EINVAL))

        return fd;

#endif

    fd = ::accept(s, addr, static_cast<QT_SOCKLEN_T *>(addrlen));

    if (fd == -1)

        return -1;

    ::fcntl(fd, F_SETFD, FD_CLOEXEC);

    // set non-block too?

    if (flags & O_NONBLOCK)

        ::fcntl(fd, F_SETFL, ::fcntl(fd, F_GETFL) | O_NONBLOCK);

    return fd;

}

// UnixWare 7 redefines listen -> _listen

static inline int qt_safe_listen(int s, int backlog)

{

    return ::listen(s, backlog);

}

static inline int qt_safe_connect(int sockfd, const struct sockaddr *addr, QT_SOCKLEN_T addrlen)

{

    register int ret;

    // Solaris e.g. expects a non-const 2nd parameter

    EINTR_LOOP(ret, QT_SOCKET_CONNECT(sockfd, const_cast<struct sockaddr *>(addr), addrlen));

    return ret;

}

#undef QT_SOCKET_CONNECT

#define QT_SOCKET_CONNECT qt_safe_connect

#if defined(socket)

# undef socket

#endif

#if defined(accept)

# undef accept

#endif

#if defined(listen)

# undef listen

#endif

// VxWorks' headers specify 'int' instead of '...' for the 3rd ioctl() parameter.

template <typename T>

static inline int qt_safe_ioctl(int sockfd, int request, T arg)

{

#ifdef Q_OS_VXWORKS

    return ::ioctl(sockfd, request, (int) arg);

#else

    return ::ioctl(sockfd, request, arg);

#endif

}

// VxWorks' headers do not specify any const modifiers

static inline in_addr_t qt_safe_inet_addr(const char *cp)

{

#ifdef Q_OS_VXWORKS

    return ::inet_addr((char *) cp);

#else

    return ::inet_addr(cp);

#endif

}

// VxWorks' headers do not specify any const modifiers

static inline int qt_safe_sendto(int sockfd, const void *buf, size_t len, int flags, const struct sockaddr *to, QT_SOCKLEN_T tolen)

{

#ifdef MSG_NOSIGNAL

    flags |= MSG_NOSIGNAL;

#endif

    register int ret;

#ifdef Q_OS_VXWORKS

    EINTR_LOOP(ret, ::sendto(sockfd, (char *) buf, len, flags, (struct sockaddr *) to, tolen));

#else

    EINTR_LOOP(ret, ::sendto(sockfd, buf, len, flags, to, tolen));

#endif

    return ret;

}

QT_END_NAMESPACE

#endif // QNET_UNIX_P_H