/*
 * based on Windows Sockets 1.1 specs
 *
 * Copyright (C) 1993,1994,1996,1997 John Brezak, Erik Bos, Alex Korobka.
 * Copyright (C) 2005 Marcus Meissner
 * Copyright (C) 2006 Kai Blin
 *
 * 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 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 *
 * NOTE: If you make any changes to fix a particular app, make sure
 * they don't break something else like Netscape or telnet and ftp
 * clients and servers (www.winsite.com got a lot of those).
 */

#include "config.h"
#include "wine/port.h"

#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#ifdef HAVE_SYS_IPC_H
# include <sys/ipc.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#ifdef HAVE_SYS_FILIO_H
# include <sys/filio.h>
#endif
#ifdef HAVE_SYS_SOCKIO_H
# include <sys/sockio.h>
#endif

#if defined(__EMX__)
# include <sys/so_ioctl.h>
#endif

#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif

#ifdef HAVE_SYS_MSG_H
# include <sys/msg.h>
#endif
#ifdef HAVE_SYS_WAIT_H
# include <sys/wait.h>
#endif
#ifdef HAVE_SYS_UIO_H
# include <sys/uio.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_NETINET_TCP_H
# include <netinet/tcp.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#include <ctype.h>
#include <fcntl.h>
#include <errno.h>
#ifdef HAVE_SYS_ERRNO_H
#include <sys/errno.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <stdlib.h>
#ifdef HAVE_ARPA_NAMESER_H
# include <arpa/nameser.h>
#endif
#ifdef HAVE_RESOLV_H
# include <resolv.h>
#endif
#ifdef HAVE_NET_IF_H
# include <net/if.h>
#endif

#ifdef HAVE_NETIPX_IPX_H
# include <netipx/ipx.h>
# define HAVE_IPX
#elif defined(HAVE_LINUX_IPX_H)
# ifdef HAVE_ASM_TYPES_H
#  include <asm/types.h>
# endif
# include <linux/ipx.h>
# define HAVE_IPX
#endif

#ifdef HAVE_POLL_H
#include <poll.h>
#endif
#ifdef HAVE_SYS_POLL_H
# include <sys/poll.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif

#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "winerror.h"
#include "winnls.h"
#include "winsock2.h"
#include "mswsock.h"
#include "ws2tcpip.h"
#include "ws2spi.h"
#include "wsipx.h"
#include "winnt.h"
#include "iphlpapi.h"
#include "wine/server.h"
#include "wine/debug.h"
#include "wine/unicode.h"

#ifdef HAVE_IPX
# include "wsnwlink.h"
#endif


#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
# define sipx_network    sipx_addr.x_net
# define sipx_node       sipx_addr.x_host.c_host
#endif  /* __FreeBSD__ */

#ifndef INADDR_NONE
#define INADDR_NONE ~0UL
#endif

WINE_DEFAULT_DEBUG_CHANNEL(winsock);

/* critical section to protect some non-reentrant net function */
extern CRITICAL_SECTION csWSgetXXXbyYYY;

union generic_unix_sockaddr
{
    struct sockaddr addr;
    char data[128];  /* should be big enough for all families */
};

static inline const char *debugstr_sockaddr( const struct WS_sockaddr *a )
{
    if (!a) return "(nil)";
    return wine_dbg_sprintf("{ family %d, address %s, port %d }",
                            ((const struct sockaddr_in *)a)->sin_family,
                            inet_ntoa(((const struct sockaddr_in *)a)->sin_addr),
                            ntohs(((const struct sockaddr_in *)a)->sin_port));
}

/* HANDLE<->SOCKET conversion (SOCKET is UINT_PTR). */
#define SOCKET2HANDLE(s) ((HANDLE)(s))
#define HANDLE2SOCKET(h) ((SOCKET)(h))

/****************************************************************
 * Async IO declarations
 ****************************************************************/

typedef struct ws2_async
{
    HANDLE                              hSocket;
    int                                 type;
    LPWSAOVERLAPPED                     user_overlapped;
    LPWSAOVERLAPPED_COMPLETION_ROUTINE  completion_func;
    IO_STATUS_BLOCK                     local_iosb;
    struct iovec                        iovec[WS_MSG_MAXIOVLEN];
    int                                 n_iovecs;
    struct WS_sockaddr                  *addr;
    union
    {
        int val;     /* for send operations */
        int *ptr;    /* for recv operations */
    }                                   addrlen;
    DWORD                               flags;
} ws2_async;

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

/* ----------------------------------- internal data */

/* ws_... struct conversion flags */

typedef struct          /* WSAAsyncSelect() control struct */
{
  HANDLE      service, event, sock;
  HWND        hWnd;
  UINT        uMsg;
  LONG        lEvent;
} ws_select_info;

#define WS_MAX_SOCKETS_PER_PROCESS      128     /* reasonable guess */
#define WS_MAX_UDP_DATAGRAM             1024
static INT WINAPI WSA_DefaultBlockingHook( FARPROC x );

/* hostent's, servent's and protent's are stored in one buffer per thread,
 * as documented on MSDN for the functions that return any of the buffers */
struct per_thread_data
{
    int opentype;
    struct WS_hostent *he_buffer;
    struct WS_servent *se_buffer;
    struct WS_protoent *pe_buffer;
    int he_len;
    int se_len;
    int pe_len;
};

static INT num_startup;          /* reference counter */
static FARPROC blocking_hook = (FARPROC)WSA_DefaultBlockingHook;

/* function prototypes */
static struct WS_hostent *WS_dup_he(const struct hostent* p_he);
static struct WS_protoent *WS_dup_pe(const struct protoent* p_pe);
static struct WS_servent *WS_dup_se(const struct servent* p_se);

int WSAIOCTL_GetInterfaceCount(void);
int WSAIOCTL_GetInterfaceName(int intNumber, char *intName);

UINT wsaErrno(void);
UINT wsaHerrno(int errnr);

#define MAP_OPTION(opt) { WS_##opt, opt }

static const int ws_sock_map[][2] =
{
    MAP_OPTION( SO_DEBUG ),
    MAP_OPTION( SO_ACCEPTCONN ),
    MAP_OPTION( SO_REUSEADDR ),
    MAP_OPTION( SO_KEEPALIVE ),
    MAP_OPTION( SO_DONTROUTE ),
    MAP_OPTION( SO_BROADCAST ),
    MAP_OPTION( SO_LINGER ),
    MAP_OPTION( SO_OOBINLINE ),
    MAP_OPTION( SO_SNDBUF ),
    MAP_OPTION( SO_RCVBUF ),
    MAP_OPTION( SO_ERROR ),
    MAP_OPTION( SO_TYPE ),
#ifdef SO_RCVTIMEO
    MAP_OPTION( SO_RCVTIMEO ),
#endif
#ifdef SO_SNDTIMEO
    MAP_OPTION( SO_SNDTIMEO ),
#endif
};

static const int ws_tcp_map[][2] =
{
#ifdef TCP_NODELAY
    MAP_OPTION( TCP_NODELAY ),
#endif
};

static const int ws_ip_map[][2] =
{
    MAP_OPTION( IP_MULTICAST_IF ),
    MAP_OPTION( IP_MULTICAST_TTL ),
    MAP_OPTION( IP_MULTICAST_LOOP ),
    MAP_OPTION( IP_ADD_MEMBERSHIP ),
    MAP_OPTION( IP_DROP_MEMBERSHIP ),
    MAP_OPTION( IP_OPTIONS ),
#ifdef IP_HDRINCL
    MAP_OPTION( IP_HDRINCL ),
#endif
    MAP_OPTION( IP_TOS ),
    MAP_OPTION( IP_TTL ),
};

static const int ws_af_map[][2] =
{
    MAP_OPTION( AF_UNSPEC ),
    MAP_OPTION( AF_INET ),
    MAP_OPTION( AF_INET6 ),
#ifdef HAVE_IPX
    MAP_OPTION( AF_IPX ),
#endif
};

static const int ws_socktype_map[][2] =
{
    MAP_OPTION( SOCK_DGRAM ),
    MAP_OPTION( SOCK_STREAM ),
    MAP_OPTION( SOCK_RAW ),
};

static const int ws_proto_map[][2] =
{
    MAP_OPTION( IPPROTO_IP ),
    MAP_OPTION( IPPROTO_TCP ),
    MAP_OPTION( IPPROTO_UDP ),
    MAP_OPTION( IPPROTO_ICMP ),
    MAP_OPTION( IPPROTO_IGMP ),
    MAP_OPTION( IPPROTO_RAW ),
};

static const int ws_aiflag_map[][2] =
{
    MAP_OPTION( AI_PASSIVE ),
    MAP_OPTION( AI_CANONNAME ),
    MAP_OPTION( AI_NUMERICHOST ),
    /* Linux/UNIX knows a lot more. But Windows only
     * has 3 as far as I could see. -Marcus
     */
};

static const int ws_niflag_map[][2] =
{
    MAP_OPTION( NI_NOFQDN ),
    MAP_OPTION( NI_NUMERICHOST ),
    MAP_OPTION( NI_NAMEREQD ),
    MAP_OPTION( NI_NUMERICSERV ),
    MAP_OPTION( NI_DGRAM ),
};

static const int ws_eai_map[][2] =
{
    MAP_OPTION( EAI_AGAIN ),
    MAP_OPTION( EAI_BADFLAGS ),
    MAP_OPTION( EAI_FAIL ),
    MAP_OPTION( EAI_FAMILY ),
    MAP_OPTION( EAI_MEMORY ),
/* Note: EAI_NODATA is deprecated, but still 
 * used by Windows and Linux... We map the newer
 * EAI_NONAME to EAI_NODATA for now until Windows
 * changes too.
 */
#ifdef EAI_NODATA
    MAP_OPTION( EAI_NODATA ),
#endif
#ifdef EAI_NONAME
    { WS_EAI_NODATA, EAI_NONAME },
#endif

    MAP_OPTION( EAI_SERVICE ),
    MAP_OPTION( EAI_SOCKTYPE ),
    { 0, 0 }
};

static inline DWORD NtStatusToWSAError( const DWORD status )
{
    /* We only need to cover the status codes set by server async request handling */
    DWORD wserr;
    switch ( status )
    {
    case STATUS_SUCCESS:              wserr = 0;                     break;
    case STATUS_PENDING:              wserr = WSA_IO_PENDING;        break;
    case STATUS_OBJECT_TYPE_MISMATCH: wserr = WSAENOTSOCK;           break;
    case STATUS_INVALID_HANDLE:       wserr = WSAEBADF;              break;
    case STATUS_INVALID_PARAMETER:    wserr = WSAEINVAL;             break;
    case STATUS_PIPE_DISCONNECTED:    wserr = WSAESHUTDOWN;          break;
    case STATUS_CANCELLED:            wserr = WSA_OPERATION_ABORTED; break;
    case STATUS_TIMEOUT:              wserr = WSAETIMEDOUT;          break;
    case STATUS_NO_MEMORY:            wserr = WSAEFAULT;             break;
    default:
        if ( status >= WSABASEERR && status <= WSABASEERR+1004 )
            /* It is not an NT status code but a winsock error */
            wserr = status;
        else
        {
            wserr = RtlNtStatusToDosError( status );
            FIXME( "Status code %08x converted to DOS error code %x\n", status, wserr );
        }
    }
    return wserr;
}

/* set last error code from NT status without mapping WSA errors */
static inline unsigned int set_error( unsigned int err )
{
    if (err)
    {
        err = NtStatusToWSAError( err );
        SetLastError( err );
    }
    return err;
}

static inline int get_sock_fd( SOCKET s, DWORD access, unsigned int *options )
{
    int fd;
    if (set_error( wine_server_handle_to_fd( SOCKET2HANDLE(s), access, &fd, options ) ))
        return -1;
    return fd;
}

static inline void release_sock_fd( SOCKET s, int fd )
{
    wine_server_release_fd( SOCKET2HANDLE(s), fd );
}

static void _enable_event( HANDLE s, unsigned int event,
                           unsigned int sstate, unsigned int cstate )
{
    SERVER_START_REQ( enable_socket_event )
    {
        req->handle = s;
        req->mask   = event;
        req->sstate = sstate;
        req->cstate = cstate;
        wine_server_call( req );
    }
    SERVER_END_REQ;
}

static int _is_blocking(SOCKET s)
{
    int ret;
    SERVER_START_REQ( get_socket_event )
    {
        req->handle  = SOCKET2HANDLE(s);
        req->service = FALSE;
        req->c_event = 0;
        wine_server_call( req );
        ret = (reply->state & FD_WINE_NONBLOCKING) == 0;
    }
    SERVER_END_REQ;
    return ret;
}

static unsigned int _get_sock_mask(SOCKET s)
{
    unsigned int ret;
    SERVER_START_REQ( get_socket_event )
    {
        req->handle  = SOCKET2HANDLE(s);
        req->service = FALSE;
        req->c_event = 0;
        wine_server_call( req );
        ret = reply->mask;
    }
    SERVER_END_REQ;
    return ret;
}

static void _sync_sock_state(SOCKET s)
{
    /* do a dummy wineserver request in order to let
       the wineserver run through its select loop once */
    (void)_is_blocking(s);
}

static int _get_sock_error(SOCKET s, unsigned int bit)
{
    int events[FD_MAX_EVENTS];

    SERVER_START_REQ( get_socket_event )
    {
        req->handle  = SOCKET2HANDLE(s);
        req->service = FALSE;
        req->c_event = 0;
        wine_server_set_reply( req, events, sizeof(events) );
        wine_server_call( req );
    }
    SERVER_END_REQ;
    return events[bit];
}

static struct per_thread_data *get_per_thread_data(void)
{
    struct per_thread_data * ptb = NtCurrentTeb()->WinSockData;
    /* lazy initialization */
    if (!ptb)
    {
        ptb = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*ptb) );
        NtCurrentTeb()->WinSockData = ptb;
    }
    return ptb;
}

static void free_per_thread_data(void)
{
    struct per_thread_data * ptb = NtCurrentTeb()->WinSockData;

    if (!ptb) return;

    /* delete scratch buffers */
    HeapFree( GetProcessHeap(), 0, ptb->he_buffer );
    HeapFree( GetProcessHeap(), 0, ptb->se_buffer );
    HeapFree( GetProcessHeap(), 0, ptb->pe_buffer );
    ptb->he_buffer = NULL;
    ptb->se_buffer = NULL;
    ptb->pe_buffer = NULL;

    HeapFree( GetProcessHeap(), 0, ptb );
    NtCurrentTeb()->WinSockData = NULL;
}

/***********************************************************************
 *		DllMain (WS2_32.init)
 */
BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID fImpLoad)
{
    TRACE("%p 0x%x %p\n", hInstDLL, fdwReason, fImpLoad);
    switch (fdwReason) {
    case DLL_PROCESS_ATTACH:
        break;
    case DLL_PROCESS_DETACH:
        free_per_thread_data();
        num_startup = 0;
        break;
    case DLL_THREAD_DETACH:
        free_per_thread_data();
        break;
    }
    return TRUE;
}

/***********************************************************************
 *          convert_sockopt()
 *
 * Converts socket flags from Windows format.
 * Return 1 if converted, 0 if not (error).
 */
static int convert_sockopt(INT *level, INT *optname)
{
  int i;
  switch (*level)
  {
     case WS_SOL_SOCKET:
        *level = SOL_SOCKET;
        for(i=0; i<sizeof(ws_sock_map)/sizeof(ws_sock_map[0]); i++) {
            if( ws_sock_map[i][0] == *optname )
            {
                *optname = ws_sock_map[i][1];
                return 1;
            }
        }
        FIXME("Unknown SOL_SOCKET optname 0x%x\n", *optname);
        break;
     case WS_IPPROTO_TCP:
        *level = IPPROTO_TCP;
        for(i=0; i<sizeof(ws_tcp_map)/sizeof(ws_tcp_map[0]); i++) {
            if ( ws_tcp_map[i][0] == *optname )
            {
                *optname = ws_tcp_map[i][1];
                return 1;
            }
        }
        FIXME("Unknown IPPROTO_TCP optname 0x%x\n", *optname);
	break;
     case WS_IPPROTO_IP:
        *level = IPPROTO_IP;
        for(i=0; i<sizeof(ws_ip_map)/sizeof(ws_ip_map[0]); i++) {
            if (ws_ip_map[i][0] == *optname )
            {
                *optname = ws_ip_map[i][1];
                return 1;
            }
        }
	FIXME("Unknown IPPROTO_IP optname 0x%x\n", *optname);
	break;
     default: FIXME("Unimplemented or unknown socket level\n");
  }
  return 0;
}

static inline BOOL is_timeout_option( int optname )
{
#ifdef SO_RCVTIMEO
    if (optname == SO_RCVTIMEO) return TRUE;
#endif
#ifdef SO_SNDTIMEO
    if (optname == SO_SNDTIMEO) return TRUE;
#endif
    return FALSE;
}

/* ----------------------------------- Per-thread info (or per-process?) */

static char *strdup_lower(const char *str)
{
    int i;
    char *ret = HeapAlloc( GetProcessHeap(), 0, strlen(str) + 1 );

    if (ret)
    {
        for (i = 0; str[i]; i++) ret[i] = tolower(str[i]);
        ret[i] = 0;
    }
    else SetLastError(WSAENOBUFS);
    return ret;
}

static inline int sock_error_p(int s)
{
    unsigned int optval, optlen;

    optlen = sizeof(optval);
    getsockopt(s, SOL_SOCKET, SO_ERROR, (void *) &optval, &optlen);
    if (optval) WARN("\t[%i] error: %d\n", s, optval);
    return optval != 0;
}

/* Utility: get the SO_RCVTIMEO or SO_SNDTIMEO socket option
 * from an fd and return the value converted to milli seconds
 * or -1 if there is an infinite time out */
static inline int get_rcvsnd_timeo( int fd, int optname)
{
  struct timeval tv;
  unsigned int len = sizeof(tv);
  int ret = getsockopt(fd, SOL_SOCKET, optname, &tv, &len);
  if( ret >= 0)
      ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
  if( ret <= 0 ) /* tv == {0,0} means infinite time out */
      return -1;
  return ret;
}

/* macro wrappers for portability */
#ifdef SO_RCVTIMEO
#define GET_RCVTIMEO(fd) get_rcvsnd_timeo( (fd), SO_RCVTIMEO)
#else
#define GET_RCVTIMEO(fd) (-1)
#endif

#ifdef SO_SNDTIMEO
#define GET_SNDTIMEO(fd) get_rcvsnd_timeo( (fd), SO_SNDTIMEO)
#else
#define GET_SNDTIMEO(fd) (-1)
#endif

/* utility: given an fd, will block until one of the events occurs */
static inline int do_block( int fd, int events, int timeout )
{
  struct pollfd pfd;
  int ret;

  pfd.fd = fd;
  pfd.events = events;

  while ((ret = poll(&pfd, 1, timeout)) < 0)
  {
      if (errno != EINTR)
          return -1;
  }
  if( ret == 0 )
      return 0;
  return pfd.revents;
}

static int
convert_af_w2u(int windowsaf) {
    int i;

    for (i=0;i<sizeof(ws_af_map)/sizeof(ws_af_map[0]);i++)
    	if (ws_af_map[i][0] == windowsaf)
	    return ws_af_map[i][1];
    FIXME("unhandled Windows address family %d\n", windowsaf);
    return -1;
}

static int
convert_af_u2w(int unixaf) {
    int i;

    for (i=0;i<sizeof(ws_af_map)/sizeof(ws_af_map[0]);i++)
    	if (ws_af_map[i][1] == unixaf)
	    return ws_af_map[i][0];
    FIXME("unhandled UNIX address family %d\n", unixaf);
    return -1;
}

static int
convert_proto_w2u(int windowsproto) {
    int i;

    for (i=0;i<sizeof(ws_proto_map)/sizeof(ws_proto_map[0]);i++)
    	if (ws_proto_map[i][0] == windowsproto)
	    return ws_proto_map[i][1];
    FIXME("unhandled Windows socket protocol %d\n", windowsproto);
    return -1;
}

static int
convert_proto_u2w(int unixproto) {
    int i;

    for (i=0;i<sizeof(ws_proto_map)/sizeof(ws_proto_map[0]);i++)
    	if (ws_proto_map[i][1] == unixproto)
	    return ws_proto_map[i][0];
    FIXME("unhandled UNIX socket protocol %d\n", unixproto);
    return -1;
}

static int
convert_socktype_w2u(int windowssocktype) {
    int i;

    for (i=0;i<sizeof(ws_socktype_map)/sizeof(ws_socktype_map[0]);i++)
    	if (ws_socktype_map[i][0] == windowssocktype)
	    return ws_socktype_map[i][1];
    FIXME("unhandled Windows socket type %d\n", windowssocktype);
    return -1;
}

static int
convert_socktype_u2w(int unixsocktype) {
    int i;

    for (i=0;i<sizeof(ws_socktype_map)/sizeof(ws_socktype_map[0]);i++)
    	if (ws_socktype_map[i][1] == unixsocktype)
	    return ws_socktype_map[i][0];
    FIXME("unhandled UNIX socket type %d\n", unixsocktype);
    return -1;
}

/* ----------------------------------- API -----
 *
 * Init / cleanup / error checking.
 */

/***********************************************************************
 *      WSAStartup		(WS2_32.115)
 */
int WINAPI WSAStartup(WORD wVersionRequested, LPWSADATA lpWSAData)
{
    TRACE("verReq=%x\n", wVersionRequested);

    if (LOBYTE(wVersionRequested) < 1)
        return WSAVERNOTSUPPORTED;

    if (!lpWSAData) return WSAEINVAL;

    num_startup++;

    /* that's the whole of the negotiation for now */
    lpWSAData->wVersion = wVersionRequested;
    /* return winsock information */
    lpWSAData->wHighVersion = 0x0202;
    strcpy(lpWSAData->szDescription, "WinSock 2.0" );
    strcpy(lpWSAData->szSystemStatus, "Running" );
    lpWSAData->iMaxSockets = WS_MAX_SOCKETS_PER_PROCESS;
    lpWSAData->iMaxUdpDg = WS_MAX_UDP_DATAGRAM;
    /* don't do anything with lpWSAData->lpVendorInfo */
    /* (some apps don't allocate the space for this field) */

    TRACE("succeeded\n");
    return 0;
}


/***********************************************************************
 *      WSACleanup			(WS2_32.116)
 */
INT WINAPI WSACleanup(void)
{
    if (num_startup) {
        num_startup--;
        return 0;
    }
    SetLastError(WSANOTINITIALISED);
    return SOCKET_ERROR;
}


/***********************************************************************
 *      WSAGetLastError		(WINSOCK.111)
 *      WSAGetLastError		(WS2_32.111)
 */
INT WINAPI WSAGetLastError(void)
{
	return GetLastError();
}

/***********************************************************************
 *      WSASetLastError		(WS2_32.112)
 */
void WINAPI WSASetLastError(INT iError) {
    SetLastError(iError);
}

static struct WS_hostent *check_buffer_he(int size)
{
    struct per_thread_data * ptb = get_per_thread_data();
    if (ptb->he_buffer)
    {
        if (ptb->he_len >= size ) return ptb->he_buffer;
        HeapFree( GetProcessHeap(), 0, ptb->he_buffer );
    }
    ptb->he_buffer = HeapAlloc( GetProcessHeap(), 0, (ptb->he_len = size) );
    if (!ptb->he_buffer) SetLastError(WSAENOBUFS);
    return ptb->he_buffer;
}

static struct WS_servent *check_buffer_se(int size)
{
    struct per_thread_data * ptb = get_per_thread_data();
    if (ptb->se_buffer)
    {
        if (ptb->se_len >= size ) return ptb->se_buffer;
        HeapFree( GetProcessHeap(), 0, ptb->se_buffer );
    }
    ptb->se_buffer = HeapAlloc( GetProcessHeap(), 0, (ptb->se_len = size) );
    if (!ptb->se_buffer) SetLastError(WSAENOBUFS);
    return ptb->se_buffer;
}

static struct WS_protoent *check_buffer_pe(int size)
{
    struct per_thread_data * ptb = get_per_thread_data();
    if (ptb->pe_buffer)
    {
        if (ptb->pe_len >= size ) return ptb->pe_buffer;
        HeapFree( GetProcessHeap(), 0, ptb->pe_buffer );
    }
    ptb->pe_buffer = HeapAlloc( GetProcessHeap(), 0, (ptb->pe_len = size) );
    if (!ptb->pe_buffer) SetLastError(WSAENOBUFS);
    return ptb->pe_buffer;
}

/* ----------------------------------- i/o APIs */

#ifdef HAVE_IPX
#define SUPPORTED_PF(pf) ((pf)==WS_AF_INET || (pf)== WS_AF_IPX || (pf) == WS_AF_INET6)
#else
#define SUPPORTED_PF(pf) ((pf)==WS_AF_INET || (pf) == WS_AF_INET6)
#endif


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

/* Returns the length of the converted address if successful, 0 if it was too small to
 * start with.
 */
static unsigned int ws_sockaddr_ws2u(const struct WS_sockaddr* wsaddr, int wsaddrlen,
                                     union generic_unix_sockaddr *uaddr)
{
    unsigned int uaddrlen = 0;

    switch (wsaddr->sa_family)
    {
#ifdef HAVE_IPX
    case WS_AF_IPX:
        {
            const struct WS_sockaddr_ipx* wsipx=(const struct WS_sockaddr_ipx*)wsaddr;
            struct sockaddr_ipx* uipx = (struct sockaddr_ipx *)uaddr;

            if (wsaddrlen<sizeof(struct WS_sockaddr_ipx))
                return 0;

            uaddrlen = sizeof(struct sockaddr_ipx);
            memset( uaddr, 0, uaddrlen );
            uipx->sipx_family=AF_IPX;
            uipx->sipx_port=wsipx->sa_socket;
            /* copy sa_netnum and sa_nodenum to sipx_network and sipx_node
             * in one go
             */
            memcpy(&uipx->sipx_network,wsipx->sa_netnum,sizeof(uipx->sipx_network)+sizeof(uipx->sipx_node));
#ifdef IPX_FRAME_NONE
            uipx->sipx_type=IPX_FRAME_NONE;
#endif
            break;
        }
#endif
    case WS_AF_INET6: {
        struct sockaddr_in6* uin6 = (struct sockaddr_in6 *)uaddr;
        const struct WS_sockaddr_in6* win6 = (const struct WS_sockaddr_in6*)wsaddr;

        /* Note: Windows has 2 versions of the sockaddr_in6 struct, one with
         * scope_id, one without.
         */
        if (wsaddrlen >= sizeof(struct WS_sockaddr_in6_old)) {
            uaddrlen = sizeof(struct sockaddr_in6);
            memset( uaddr, 0, uaddrlen );
            uin6->sin6_family   = AF_INET6;
            uin6->sin6_port     = win6->sin6_port;
            uin6->sin6_flowinfo = win6->sin6_flowinfo;
#ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
            if (wsaddrlen >= sizeof(struct WS_sockaddr_in6)) uin6->sin6_scope_id = win6->sin6_scope_id;
#endif
            memcpy(&uin6->sin6_addr,&win6->sin6_addr,16); /* 16 bytes = 128 address bits */
            break;
        }
        FIXME("bad size %d for WS_sockaddr_in6\n",wsaddrlen);
        return 0;
    }
    case WS_AF_INET: {
        struct sockaddr_in* uin = (struct sockaddr_in *)uaddr;
        const struct WS_sockaddr_in* win = (const struct WS_sockaddr_in*)wsaddr;

        if (wsaddrlen<sizeof(struct WS_sockaddr_in))
            return 0;
        uaddrlen = sizeof(struct sockaddr_in);
        memset( uaddr, 0, uaddrlen );
        uin->sin_family = AF_INET;
        uin->sin_port   = win->sin_port;
        memcpy(&uin->sin_addr,&win->sin_addr,4); /* 4 bytes = 32 address bits */
        break;
    }
    case WS_AF_UNSPEC: {
        /* Try to determine the needed space by the passed windows sockaddr space */
        switch (wsaddrlen) {
        default: /* likely a ipv4 address */
        case sizeof(struct WS_sockaddr_in):
            uaddrlen = sizeof(struct sockaddr_in);
            break;
#ifdef HAVE_IPX
        case sizeof(struct WS_sockaddr_ipx):
            uaddrlen = sizeof(struct sockaddr_ipx);
            break;
#endif
        case sizeof(struct WS_sockaddr_in6):
        case sizeof(struct WS_sockaddr_in6_old):
            uaddrlen = sizeof(struct sockaddr_in6);
            break;
        }
        memset( uaddr, 0, uaddrlen );
        break;
    }
    default:
        FIXME("Unknown address family %d, return NULL.\n", wsaddr->sa_family);
        return 0;
    }
    return uaddrlen;
}

static BOOL is_sockaddr_bound(const struct sockaddr *uaddr, int uaddrlen)
{
    switch (uaddr->sa_family)
    {
#ifdef HAVE_IPX
        case AF_IPX:
            FIXME("don't know how to tell if IPX socket is bound, assuming it is!\n");
            return TRUE;
#endif
        case AF_INET6:
        {
            static const struct sockaddr_in6 emptyAddr;
            const struct sockaddr_in6 *in6 = (const struct sockaddr_in6*) uaddr;
            return in6->sin6_port || memcmp(&in6->sin6_addr, &emptyAddr.sin6_addr, sizeof(struct in6_addr));
        }
        case AF_INET:
        {
            static const struct sockaddr_in emptyAddr;
            const struct sockaddr_in *in = (const struct sockaddr_in*) uaddr;
            return in->sin_port || memcmp(&in->sin_addr, &emptyAddr.sin_addr, sizeof(struct in_addr));
        }
        case AF_UNSPEC:
            return FALSE;
        default:
            FIXME("unknown address family %d\n", uaddr->sa_family);
            return TRUE;
    }
}

/* Returns 0 if successful, -1 if the buffer is too small */
static int ws_sockaddr_u2ws(const struct sockaddr* uaddr, struct WS_sockaddr* wsaddr, int* wsaddrlen)
{
    int res;

    switch(uaddr->sa_family)
    {
#ifdef HAVE_IPX
    case AF_IPX:
        {
            const struct sockaddr_ipx* uipx=(const struct sockaddr_ipx*)uaddr;
            struct WS_sockaddr_ipx* wsipx=(struct WS_sockaddr_ipx*)wsaddr;

            res=-1;
            switch (*wsaddrlen) /* how much can we copy? */
            {
            default:
                res=0; /* enough */
                *wsaddrlen = sizeof(*wsipx);
                wsipx->sa_socket=uipx->sipx_port;
                /* fall through */
            case 13:
            case 12:
                memcpy(wsipx->sa_nodenum,uipx->sipx_node,sizeof(wsipx->sa_nodenum));
                /* fall through */
            case 11:
            case 10:
            case 9:
            case 8:
            case 7:
            case 6:
                memcpy(wsipx->sa_netnum,&uipx->sipx_network,sizeof(wsipx->sa_netnum));
                /* fall through */
            case 5:
            case 4:
            case 3:
            case 2:
                wsipx->sa_family=WS_AF_IPX;
                /* fall through */
            case 1:
            case 0:
                /* way too small */
                break;
            }
        }
        break;
#endif
    case AF_INET6: {
        const struct sockaddr_in6* uin6 = (const struct sockaddr_in6*)uaddr;
        struct WS_sockaddr_in6_old* win6old = (struct WS_sockaddr_in6_old*)wsaddr;

        if (*wsaddrlen < sizeof(struct WS_sockaddr_in6_old))
            return -1;
        win6old->sin6_family   = WS_AF_INET6;
        win6old->sin6_port     = uin6->sin6_port;
        win6old->sin6_flowinfo = uin6->sin6_flowinfo;
        memcpy(&win6old->sin6_addr,&uin6->sin6_addr,16); /* 16 bytes = 128 address bits */
        *wsaddrlen = sizeof(struct WS_sockaddr_in6_old);
#ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
        if (*wsaddrlen >= sizeof(struct WS_sockaddr_in6)) {
            struct WS_sockaddr_in6* win6 = (struct WS_sockaddr_in6*)wsaddr;
            win6->sin6_scope_id = uin6->sin6_scope_id;
            *wsaddrlen = sizeof(struct WS_sockaddr_in6);
        }
#endif
        return 0;
    }
    case AF_INET: {
        const struct sockaddr_in* uin = (const struct sockaddr_in*)uaddr;
        struct WS_sockaddr_in* win = (struct WS_sockaddr_in*)wsaddr;

        if (*wsaddrlen < sizeof(struct WS_sockaddr_in))
            return -1;
        win->sin_family = WS_AF_INET;
        win->sin_port   = uin->sin_port;
        memcpy(&win->sin_addr,&uin->sin_addr,4); /* 4 bytes = 32 address bits */
        memset(&win->sin_zero, 0, 8); /* Make sure the null padding is null */
        *wsaddrlen = sizeof(struct WS_sockaddr_in);
        return 0;
    }
    case AF_UNSPEC: {
        memset(wsaddr,0,*wsaddrlen);
        return 0;
    }
    default:
        FIXME("Unknown address family %d\n", uaddr->sa_family);
        return -1;
    }
    return res;
}

/**************************************************************************
 * Functions for handling overlapped I/O
 **************************************************************************/

/* user APC called upon async completion */
static void WINAPI ws2_async_apc( void *arg, IO_STATUS_BLOCK *iosb, ULONG reserved )
{
    ws2_async *wsa = arg;

    if (wsa->completion_func) wsa->completion_func( NtStatusToWSAError(iosb->u.Status),
                                                    iosb->Information, wsa->user_overlapped,
                                                    wsa->flags );
    HeapFree( GetProcessHeap(), 0, wsa );
}

/***********************************************************************
 *              WS2_recv                (INTERNAL)
 *
 * Workhorse for both synchronous and asynchronous recv() operations.
 */
static int WS2_recv( int fd, struct iovec* iov, int count,
                     struct WS_sockaddr *lpFrom, LPINT lpFromlen,
                      LPDWORD lpFlags )
{
    struct msghdr hdr;
    union generic_unix_sockaddr unix_sockaddr;
    int n;

    hdr.msg_name = NULL;

    if ( lpFrom )
    {
        hdr.msg_namelen = sizeof(unix_sockaddr);
        hdr.msg_name = &unix_sockaddr;
    }
    else
        hdr.msg_namelen = 0;

    hdr.msg_iov = iov;
    hdr.msg_iovlen = count;
#ifdef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
    hdr.msg_accrights = NULL;
    hdr.msg_accrightslen = 0;
#else
    hdr.msg_control = NULL;
    hdr.msg_controllen = 0;
    hdr.msg_flags = 0;
#endif

    if ( (n = recvmsg(fd, &hdr, *lpFlags)) == -1 )
        return -1;

    if ( lpFrom &&
         ws_sockaddr_u2ws( &unix_sockaddr.addr, lpFrom, lpFromlen ) != 0 )
    {
        /* The from buffer was too small, but we read the data
         * anyway. Is that really bad?
         */
    }

    return n;
}

/***********************************************************************
 *              WS2_async_recv          (INTERNAL)
 *
 * Handler for overlapped recv() operations.
 */
static NTSTATUS WS2_async_recv( void* user, IO_STATUS_BLOCK* iosb, NTSTATUS status, ULONG_PTR *total )
{
    ws2_async* wsa = user;
    int result = 0, fd;

    switch (status)
    {
    case STATUS_ALERTED:
        if ((status = wine_server_handle_to_fd( wsa->hSocket, FILE_READ_DATA, &fd, NULL ) ))
            break;

        result = WS2_recv( fd, wsa->iovec, wsa->n_iovecs,
                           wsa->addr, wsa->addrlen.ptr, &wsa->flags );
        wine_server_release_fd( wsa->hSocket, fd );
        if (result >= 0)
        {
            status = STATUS_SUCCESS;
            _enable_event( wsa->hSocket, FD_READ, 0, 0 );
        }
        else
        {
            if (errno == EINTR || errno == EAGAIN)
            {
                status = STATUS_PENDING;
                _enable_event( wsa->hSocket, FD_READ, 0, 0 );
            }
            else
            {
                result = 0;
                status = wsaErrno(); /* FIXME: is this correct ???? */
            }
        }
        break;
    }
    if (status != STATUS_PENDING)
    {
        iosb->u.Status = status;
        iosb->Information = *total = result;
    }
    return status;
}

/***********************************************************************
 *              WS2_send                (INTERNAL)
 *
 * Workhorse for both synchronous and asynchronous send() operations.
 */
static int WS2_send( int fd, struct iovec* iov, int count,
                     const struct WS_sockaddr *to, INT tolen, DWORD dwFlags )
{
    struct msghdr hdr;
    union generic_unix_sockaddr unix_addr;


    hdr.msg_name = NULL;
    hdr.msg_namelen = 0;

    if ( to )
    {
        hdr.msg_name = &unix_addr;
        hdr.msg_namelen = ws_sockaddr_ws2u( to, tolen, &unix_addr );
        if ( !hdr.msg_namelen )
        {
            errno = EFAULT;
            return -1;
        }

#if defined(HAVE_IPX) && defined(SOL_IPX)
        if(to->sa_family == WS_AF_IPX)
        {
            struct sockaddr_ipx* uipx = (struct sockaddr_ipx*)hdr.msg_name;
            int val=0;
            unsigned int len=sizeof(int);

            /* The packet type is stored at the ipx socket level; At least the linux kernel seems
             *  to do something with it in case hdr.msg_name is NULL. Nonetheless can we use it to store
             *  the packet type and then we can retrieve it using getsockopt. After that we can set the
             *  ipx type in the sockaddr_opx structure with the stored value.
             */
            if(getsockopt(fd, SOL_IPX, IPX_TYPE, &val, &len) != -1)
                uipx->sipx_type = val;
        }
#endif
    }

    hdr.msg_iov = iov;
    hdr.msg_iovlen = count;
#ifdef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
    hdr.msg_accrights = NULL;
    hdr.msg_accrightslen = 0;
#else
    hdr.msg_control = NULL;
    hdr.msg_controllen = 0;
    hdr.msg_flags = 0;
#endif

    return sendmsg(fd, &hdr, dwFlags);
}

/***********************************************************************
 *              WS2_async_send          (INTERNAL)
 *
 * Handler for overlapped send() operations.
 */
static NTSTATUS WS2_async_send(void* user, IO_STATUS_BLOCK* iosb, NTSTATUS status, ULONG_PTR *total )
{
    ws2_async* wsa = user;
    int result = 0, fd;

    switch (status)
    {
    case STATUS_ALERTED:
        if ((status = wine_server_handle_to_fd( wsa->hSocket, FILE_WRITE_DATA, &fd, NULL ) ))
            break;

        /* check to see if the data is ready (non-blocking) */
        result = WS2_send( fd, wsa->iovec, wsa->n_iovecs, wsa->addr, wsa->addrlen.val, wsa->flags );
        wine_server_release_fd( wsa->hSocket, fd );

        if (result >= 0)
        {
            status = STATUS_SUCCESS;
            _enable_event( wsa->hSocket, FD_WRITE, 0, 0 );
        }
        else
        {
            if (errno == EINTR || errno == EAGAIN)
            {
                status = STATUS_PENDING;
                _enable_event( wsa->hSocket, FD_WRITE, 0, 0 );
            }
            else
            {
                /* We set the status to a winsock error code and check for that
                   later in NtStatusToWSAError () */
                status = wsaErrno();
                result = 0;
            }
        }
        break;
    }
    if (status != STATUS_PENDING)
    {
        iosb->u.Status = status;
        iosb->Information = *total = result;
    }
    return status;
}

/***********************************************************************
 *              WS2_async_shutdown      (INTERNAL)
 *
 * Handler for shutdown() operations on overlapped sockets.
 */
static NTSTATUS WS2_async_shutdown( void* user, PIO_STATUS_BLOCK iosb, NTSTATUS status )
{
    ws2_async* wsa = user;
    int fd, err = 1;

    switch (status)
    {
    case STATUS_ALERTED:
        if ((status = wine_server_handle_to_fd( wsa->hSocket, 0, &fd, NULL ) ))
            break;

        switch ( wsa->type )
        {
        case ASYNC_TYPE_READ:   err = shutdown( fd, 0 );  break;
        case ASYNC_TYPE_WRITE:  err = shutdown( fd, 1 );  break;
        }
        wine_server_release_fd( wsa->hSocket, fd );
        status = err ? wsaErrno() : STATUS_SUCCESS;
        break;
    }
    iosb->u.Status = status;
    return status;
}

/***********************************************************************
 *  WS2_register_async_shutdown         (INTERNAL)
 *
 * Helper function for WS_shutdown() on overlapped sockets.
 */
static int WS2_register_async_shutdown( SOCKET s, int type )
{
    struct ws2_async *wsa;
    NTSTATUS status;

    TRACE("s %ld type %d\n", s, type);

    wsa = HeapAlloc( GetProcessHeap(), 0, sizeof(*wsa) );
    if ( !wsa )
        return WSAEFAULT;

    wsa->hSocket         = SOCKET2HANDLE(s);
    wsa->type            = type;
    wsa->completion_func = NULL;

    SERVER_START_REQ( register_async )
    {
        req->handle = wsa->hSocket;
        req->type   = type;
        req->async.callback = WS2_async_shutdown;
        req->async.iosb     = &wsa->local_iosb;
        req->async.arg      = wsa;
        req->async.apc      = ws2_async_apc;
        req->async.cvalue   = 0;
        status = wine_server_call( req );
    }
    SERVER_END_REQ;

    if (status != STATUS_PENDING)
    {
        HeapFree( GetProcessHeap(), 0, wsa );
        return NtStatusToWSAError( status );
    }
    return 0;
}

/***********************************************************************
 *		accept		(WS2_32.1)
 */
SOCKET WINAPI WS_accept(SOCKET s, struct WS_sockaddr *addr,
                                 int *addrlen32)
{
    SOCKET as;
    BOOL is_blocking;

    TRACE("socket %04lx\n", s );
    is_blocking = _is_blocking(s);

    do {
        if (is_blocking)
        {
            int fd = get_sock_fd( s, FILE_READ_DATA, NULL );
            if (fd == -1) return INVALID_SOCKET;
            /* block here */
            do_block(fd, POLLIN, -1);
            _sync_sock_state(s); /* let wineserver notice connection */
            release_sock_fd( s, fd );
            /* retrieve any error codes from it */
            SetLastError(_get_sock_error(s, FD_ACCEPT_BIT));
            /* FIXME: care about the error? */
        }
        SERVER_START_REQ( accept_socket )
        {
            req->lhandle    = SOCKET2HANDLE(s);
            req->access     = GENERIC_READ|GENERIC_WRITE|SYNCHRONIZE;
            req->attributes = OBJ_INHERIT;
            set_error( wine_server_call( req ) );
            as = HANDLE2SOCKET( reply->handle );
        }
        SERVER_END_REQ;
        if (as)
        {
            if (addr) WS_getpeername(as, addr, addrlen32);
            return as;
        }
    } while (is_blocking);
    return INVALID_SOCKET;
}

/***********************************************************************
 *		bind			(WS2_32.2)
 */
int WINAPI WS_bind(SOCKET s, const struct WS_sockaddr* name, int namelen)
{
    int fd = get_sock_fd( s, 0, NULL );
    int res = SOCKET_ERROR;

    TRACE("socket %04lx, ptr %p %s, length %d\n", s, name, debugstr_sockaddr(name), namelen);

    if (fd != -1)
    {
        if (!name || (name->sa_family && !SUPPORTED_PF(name->sa_family)))
        {
            SetLastError(WSAEAFNOSUPPORT);
        }
        else
        {
            union generic_unix_sockaddr uaddr;
            unsigned int uaddrlen = ws_sockaddr_ws2u(name, namelen, &uaddr);
            if (!uaddrlen)
            {
                SetLastError(WSAEFAULT);
            }
            else
            {
#ifdef IPV6_V6ONLY
                const struct sockaddr_in6 *in6 = (const struct sockaddr_in6*) &uaddr;
                if (name->sa_family == WS_AF_INET6 &&
                    !memcmp(&in6->sin6_addr, &in6addr_any, sizeof(struct in6_addr)))
                {
                    int enable = 1;
                    if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &enable, sizeof(enable)) == -1)
                    {
                        release_sock_fd( s, fd );
                        SetLastError(WSAEAFNOSUPPORT);
                        return INVALID_SOCKET;
                    }
                }
#endif
                if (bind(fd, &uaddr.addr, uaddrlen) < 0)
                {
                    int loc_errno = errno;
                    WARN("\tfailure - errno = %i\n", errno);
                    errno = loc_errno;
                    switch (errno)
                    {
                    case EBADF:
                        SetLastError(WSAENOTSOCK);
                        break;
                    case EADDRNOTAVAIL:
                        SetLastError(WSAEINVAL);
                        break;
                    default:
                        SetLastError(wsaErrno());
                        break;
                    }
                }
                else
                {
                    res=0; /* success */
                }
            }
        }
        release_sock_fd( s, fd );
    }
    return res;
}

/***********************************************************************
 *		closesocket		(WS2_32.3)
 */
int WINAPI WS_closesocket(SOCKET s)
{
    TRACE("socket %04lx\n", s);
    if (CloseHandle(SOCKET2HANDLE(s))) return 0;
    return SOCKET_ERROR;
}

/***********************************************************************
 *		connect		(WS2_32.4)
 */
int WINAPI WS_connect(SOCKET s, const struct WS_sockaddr* name, int namelen)
{
    int fd = get_sock_fd( s, FILE_READ_DATA, NULL );

    TRACE("socket %04lx, ptr %p %s, length %d\n", s, name, debugstr_sockaddr(name), namelen);

    if (fd != -1)
    {
        union generic_unix_sockaddr uaddr;
        unsigned int uaddrlen = ws_sockaddr_ws2u(name, namelen, &uaddr);

        if (!uaddrlen)
        {
            SetLastError(WSAEFAULT);
        }
        else
        {
            if (connect(fd, &uaddr.addr, uaddrlen) == 0)
                goto connect_success;
        }

        if (errno == EINPROGRESS)
        {
            /* tell wineserver that a connection is in progress */
            _enable_event(SOCKET2HANDLE(s), FD_CONNECT|FD_READ|FD_WRITE,
                          FD_CONNECT|FD_READ|FD_WRITE,
                          FD_WINE_CONNECTED|FD_WINE_LISTENING);
            if (_is_blocking(s))
            {
                int result;
                /* block here */
                do_block(fd, POLLIN | POLLOUT, -1);
                _sync_sock_state(s); /* let wineserver notice connection */
                /* retrieve any error codes from it */
                result = _get_sock_error(s, FD_CONNECT_BIT);
                if (result)
                    SetLastError(result);
                else
                {
                    goto connect_success;
                }
            }
            else
            {
                SetLastError(WSAEWOULDBLOCK);
            }
        }
        else
        {
            SetLastError(wsaErrno());
        }
        release_sock_fd( s, fd );
    }
    return SOCKET_ERROR;

connect_success:
    release_sock_fd( s, fd );
    _enable_event(SOCKET2HANDLE(s), FD_CONNECT|FD_READ|FD_WRITE,
                  FD_WINE_CONNECTED|FD_READ|FD_WRITE,
                  FD_CONNECT|FD_WINE_LISTENING);
    return 0;
}

/***********************************************************************
 *              WSAConnect             (WS2_32.30)
 */
int WINAPI WSAConnect( SOCKET s, const struct WS_sockaddr* name, int namelen,
                       LPWSABUF lpCallerData, LPWSABUF lpCalleeData,
                       LPQOS lpSQOS, LPQOS lpGQOS )
{
    if ( lpCallerData || lpCalleeData || lpSQOS || lpGQOS )
        FIXME("unsupported parameters!\n");
    return WS_connect( s, name, namelen );
}


/***********************************************************************
 *		getpeername		(WS2_32.5)
 */
int WINAPI WS_getpeername(SOCKET s, struct WS_sockaddr *name, int *namelen)
{
    int fd;
    int res;

    TRACE("socket: %04lx, ptr %p, len %08x\n", s, name, *namelen);

    /* Check if what we've received is valid. Should we use IsBadReadPtr? */
    if( (name == NULL) || (namelen == NULL) )
    {
        SetLastError( WSAEFAULT );
        return SOCKET_ERROR;
    }

    fd = get_sock_fd( s, 0, NULL );
    res = SOCKET_ERROR;

    if (fd != -1)
    {
        union generic_unix_sockaddr uaddr;
        unsigned int uaddrlen = sizeof(uaddr);

        if (getpeername(fd, &uaddr.addr, &uaddrlen) != 0)
        {
            SetLastError(wsaErrno());
        }
        else if (ws_sockaddr_u2ws(&uaddr.addr, name, namelen) != 0)
        {
            /* The buffer was too small */
            SetLastError(WSAEFAULT);
        }
        else
        {
            res=0;
        }
        release_sock_fd( s, fd );
    }
    return res;
}

/***********************************************************************
 *		getsockname		(WS2_32.6)
 */
int WINAPI WS_getsockname(SOCKET s, struct WS_sockaddr *name, int *namelen)
{
    int fd;
    int res;

    TRACE("socket: %04lx, ptr %p, len %8x\n", s, name, *namelen);

    /* Check if what we've received is valid. Should we use IsBadReadPtr? */
    if( (name == NULL) || (namelen == NULL) )
    {
        SetLastError( WSAEFAULT );
        return SOCKET_ERROR;
    }

    fd = get_sock_fd( s, 0, NULL );
    res = SOCKET_ERROR;

    if (fd != -1)
    {
        union generic_unix_sockaddr uaddr;
        unsigned int uaddrlen = sizeof(uaddr);

        if (getsockname(fd, &uaddr.addr, &uaddrlen) != 0)
        {
            SetLastError(wsaErrno());
        }
        else if (!is_sockaddr_bound(&uaddr.addr, uaddrlen))
        {
            SetLastError(WSAEINVAL);
        }
        else if (ws_sockaddr_u2ws(&uaddr.addr, name, namelen) != 0)
        {
            /* The buffer was too small */
            SetLastError(WSAEFAULT);
        }
        else
        {
            res=0;
        }
        release_sock_fd( s, fd );
    }
    return res;
}

/***********************************************************************
 *		getsockopt		(WS2_32.7)
 */
INT WINAPI WS_getsockopt(SOCKET s, INT level,
                                  INT optname, char *optval, INT *optlen)
{
    int fd;
    INT ret = 0;

    TRACE("socket: %04lx, level 0x%x, name 0x%x, ptr %p, len %d\n",
          s, level, optname, optval, *optlen);

    switch(level)
    {
    case WS_SOL_SOCKET:
    {
        switch(optname)
        {
        /* Handle common cases. The special cases are below, sorted
         * alphabetically */
        case WS_SO_ACCEPTCONN:
        case WS_SO_BROADCAST:
        case WS_SO_DEBUG:
        case WS_SO_ERROR:
        case WS_SO_KEEPALIVE:
        case WS_SO_OOBINLINE:
        case WS_SO_RCVBUF:
        case WS_SO_REUSEADDR:
        case WS_SO_SNDBUF:
        case WS_SO_TYPE:
            if ( (fd = get_sock_fd( s, 0, NULL )) == -1)
                return SOCKET_ERROR;
            convert_sockopt(&level, &optname);
            if (getsockopt(fd, level, optname, optval, (unsigned int *)optlen) != 0 )
            {
                SetLastError((errno == EBADF) ? WSAENOTSOCK : wsaErrno());
                ret = SOCKET_ERROR;
            }
            release_sock_fd( s, fd );
            return ret;

        case WS_SO_DONTLINGER:
        {
            struct linger lingval;
            unsigned int len = sizeof(struct linger);

            if (!optlen || *optlen < sizeof(BOOL)|| !optval)
            {
                SetLastError(WSAEFAULT);
                return SOCKET_ERROR;
            }
            if ( (fd = get_sock_fd( s, 0, NULL )) == -1)
                return SOCKET_ERROR;

            if (getsockopt(fd, SOL_SOCKET, SO_LINGER, &lingval, &len) != 0 )
            {
                SetLastError((errno == EBADF) ? WSAENOTSOCK : wsaErrno());
                ret = SOCKET_ERROR;
            }
            else
            {
                *(BOOL *)optval = (lingval.l_onoff) ? FALSE : TRUE;
                *optlen = sizeof(BOOL);
            }

            release_sock_fd( s, fd );
            return ret;
        }

        /* As mentioned in setsockopt, Windows ignores this, so we
         * always return true here */
        case WS_SO_DONTROUTE:
            if (!optlen || *optlen < sizeof(BOOL) || !optval)
            {
                SetLastError(WSAEFAULT);
                return SOCKET_ERROR;
            }
            *(BOOL *)optval = TRUE;
            *optlen = sizeof(BOOL);
            return 0;

        case WS_SO_LINGER:
        {
            struct linger lingval;
            unsigned int len = sizeof(struct linger);

            /* struct linger and LINGER have different sizes */
            if (!optlen || *optlen < sizeof(LINGER) || !optval)
            {
                SetLastError(WSAEFAULT);
                return SOCKET_ERROR;
            }
            if ( (fd = get_sock_fd( s, 0, NULL )) == -1)
                return SOCKET_ERROR;

            if (getsockopt(fd, SOL_SOCKET, SO_LINGER, &lingval, &len) != 0 )
            {
                SetLastError((errno == EBADF) ? WSAENOTSOCK : wsaErrno());
                ret = SOCKET_ERROR;
            }
            else
            {
                ((LINGER *)optval)->l_onoff = lingval.l_onoff;
                ((LINGER *)optval)->l_linger = lingval.l_linger;
                *optlen = sizeof(struct linger);
            }

            release_sock_fd( s, fd );
            return ret;
        }

        case WS_SO_MAX_MSG_SIZE:
            if (!optlen || *optlen < sizeof(int) || !optval)
            {
                SetLastError(WSAEFAULT);
                return SOCKET_ERROR;
            }
            TRACE("getting global SO_MAX_MSG_SIZE = 65507\n");
            *(int *)optval = 65507;
            *optlen = sizeof(int);
            return 0;

        /* SO_OPENTYPE does not require a valid socket handle. */
        case WS_SO_OPENTYPE:
            if (!optlen || *optlen < sizeof(int) || !optval)
            {
                SetLastError(WSAEFAULT);
                return SOCKET_ERROR;
            }
            *(int *)optval = get_per_thread_data()->opentype;
            *optlen = sizeof(int);
            TRACE("getting global SO_OPENTYPE = 0x%x\n", *((int*)optval) );
            return 0;

#ifdef SO_RCVTIMEO
        case WS_SO_RCVTIMEO:
#endif
#ifdef SO_SNDTIMEO
        case WS_SO_SNDTIMEO:
#endif
#if defined(SO_RCVTIMEO) || defined(SO_SNDTIMEO)
        {
            struct timeval tv;
            unsigned int len = sizeof(struct timeval);

            if (!optlen || *optlen < sizeof(int)|| !optval)
            {
                SetLastError(WSAEFAULT);
                return SOCKET_ERROR;
            }
            if ( (fd = get_sock_fd( s, 0, NULL )) == -1)
                return SOCKET_ERROR;

            convert_sockopt(&level, &optname);
            if (getsockopt(fd, level, optname, &tv, &len) != 0 )
            {
                SetLastError((errno == EBADF) ? WSAENOTSOCK : wsaErrno());
                ret = SOCKET_ERROR;
            }
            else
            {
                *(int *)optval = tv.tv_sec * 1000 + tv.tv_usec / 1000;
                *optlen = sizeof(int);
            }

            release_sock_fd( s, fd );
            return ret;
        }
#endif
        default:
            TRACE("Unknown SOL_SOCKET optname: 0x%08x\n", optname);
            SetLastError(WSAENOPROTOOPT);
            return SOCKET_ERROR;
        } /* end switch(optname) */
    }/* end case WS_SOL_SOCKET */
#ifdef HAVE_IPX
    case NSPROTO_IPX:
    {
        struct WS_sockaddr_ipx addr;
        IPX_ADDRESS_DATA *data;
        int namelen;
        switch(optname)
        {
        case IPX_PTYPE:
            if ((fd = get_sock_fd( s, 0, NULL )) == -1) return SOCKET_ERROR;
#ifdef SOL_IPX
            if(getsockopt(fd, SOL_IPX, IPX_TYPE, optval, (unsigned int*)optlen) == -1)
            {
                ret = SOCKET_ERROR;
            }
#else
            {
                struct ipx val;
                socklen_t len=sizeof(struct ipx);
                if(getsockopt(fd, 0, SO_DEFAULT_HEADERS, &val, &len) == -1 )
                    ret = SOCKET_ERROR;
                else
                    *optval = (int)val.ipx_pt;
            }
#endif
            TRACE("ptype: %d (fd: %d)\n", *(int*)optval, fd);
            release_sock_fd( s, fd );
            return ret;

        case IPX_ADDRESS:
            /*
            *  On a Win2000 system with one network card there are usually
            *  three ipx devices one with a speed of 28.8kbps, 10Mbps and 100Mbps.
            *  Using this call you can then retrieve info about this all.
            *  In case of Linux it is a bit different. Usually you have
            *  only "one" device active and further it is not possible to
            *  query things like the linkspeed.
            */
            FIXME("IPX_ADDRESS\n");
            namelen = sizeof(struct WS_sockaddr_ipx);
            memset(&addr, 0, sizeof(struct WS_sockaddr_ipx));
            WS_getsockname(s, (struct WS_sockaddr*)&addr, &namelen);

            data = (IPX_ADDRESS_DATA*)optval;
                    memcpy(data->nodenum,&addr.sa_nodenum,sizeof(data->nodenum));
                    memcpy(data->netnum,&addr.sa_netnum,sizeof(data->netnum));
            data->adapternum = 0;
            data->wan = FALSE; /* We are not on a wan for now .. */
            data->status = FALSE; /* Since we are not on a wan, the wan link isn't up */
            data->maxpkt = 1467; /* This value is the default one, at least on Win2k/WinXP */
            data->linkspeed = 100000; /* Set the line speed in 100bit/s to 10 Mbit;
                                       * note 1MB = 1000kB in this case */
            return 0;

        case IPX_MAX_ADAPTER_NUM:
            FIXME("IPX_MAX_ADAPTER_NUM\n");
            *(int*)optval = 1; /* As noted under IPX_ADDRESS we have just one card. */
            return 0;

        default:
            FIXME("IPX optname:%x\n", optname);
            return SOCKET_ERROR;
        }/* end switch(optname) */
    } /* end case NSPROTO_IPX */
#endif
    /* Levels WS_IPPROTO_TCP and WS_IPPROTO_IP convert directly */
    case WS_IPPROTO_TCP:
        switch(optname)
        {
        case WS_TCP_NODELAY:
            if ( (fd = get_sock_fd( s, 0, NULL )) == -1)
                return SOCKET_ERROR;
            convert_sockopt(&level, &optname);
            if (getsockopt(fd, level, optname, optval, (unsigned int *)optlen) != 0 )
            {
                SetLastError((errno == EBADF) ? WSAENOTSOCK : wsaErrno());
                ret = SOCKET_ERROR;
            }
            release_sock_fd( s, fd );
            return ret;
        }
        FIXME("Unknown IPPROTO_TCP optname 0x%08x\n", optname);
        return SOCKET_ERROR;

    case WS_IPPROTO_IP:
        switch(optname)
        {
        case WS_IP_ADD_MEMBERSHIP:
        case WS_IP_DROP_MEMBERSHIP:
#ifdef IP_HDRINCL
        case WS_IP_HDRINCL:
#endif
        case WS_IP_MULTICAST_IF:
        case WS_IP_MULTICAST_LOOP:
        case WS_IP_MULTICAST_TTL:
        case WS_IP_OPTIONS:
        case WS_IP_TOS:
        case WS_IP_TTL:
            if ( (fd = get_sock_fd( s, 0, NULL )) == -1)
                return SOCKET_ERROR;
            convert_sockopt(&level, &optname);
            if (getsockopt(fd, level, optname, optval, (unsigned int *)optlen) != 0 )
            {
                SetLastError((errno == EBADF) ? WSAENOTSOCK : wsaErrno());
                ret = SOCKET_ERROR;
            }
            release_sock_fd( s, fd );
            return ret;
        case WS_IP_DONTFRAGMENT:
            FIXME("WS_IP_DONTFRAGMENT is always false!\n");
            *(BOOL*)optval = FALSE;
            return 0;
        }
        FIXME("Unknown IPPROTO_IP optname 0x%08x\n", optname);
        return SOCKET_ERROR;

    default:
        FIXME("Unknown level: 0x%08x\n", level);
        return SOCKET_ERROR;
    } /* end switch(level) */
}

/***********************************************************************
 *		htonl			(WINSOCK.8)
 *		htonl			(WS2_32.8)
 */
WS_u_long WINAPI WS_htonl(WS_u_long hostlong)
{
    return htonl(hostlong);
}


/***********************************************************************
 *		htons			(WINSOCK.9)
 *		htons			(WS2_32.9)
 */
WS_u_short WINAPI WS_htons(WS_u_short hostshort)
{
    return htons(hostshort);
}

/***********************************************************************
 *		WSAHtonl		(WS2_32.46)
 *  From MSDN description of error codes, this function should also
 *  check if WinSock has been initialized and the socket is a valid
 *  socket. But why? This function only translates a host byte order
 *  u_long into a network byte order u_long...
 */
int WINAPI WSAHtonl(SOCKET s, WS_u_long hostlong, WS_u_long *lpnetlong)
{
    if (lpnetlong)
    {
        *lpnetlong = htonl(hostlong);
        return 0;
    }
    WSASetLastError(WSAEFAULT);
    return SOCKET_ERROR;
}

/***********************************************************************
 *		WSAHtons		(WS2_32.47)
 *  From MSDN description of error codes, this function should also
 *  check if WinSock has been initialized and the socket is a valid
 *  socket. But why? This function only translates a host byte order
 *  u_short into a network byte order u_short...
 */
int WINAPI WSAHtons(SOCKET s, WS_u_short hostshort, WS_u_short *lpnetshort)
{

    if (lpnetshort)
    {
        *lpnetshort = htons(hostshort);
        return 0;
    }
    WSASetLastError(WSAEFAULT);
    return SOCKET_ERROR;
}


/***********************************************************************
 *		inet_addr		(WINSOCK.10)
 *		inet_addr		(WS2_32.11)
 */
WS_u_long WINAPI WS_inet_addr(const char *cp)
{
    if (!cp) return INADDR_NONE;
    return inet_addr(cp);
}


/***********************************************************************
 *		ntohl			(WINSOCK.14)
 *		ntohl			(WS2_32.14)
 */
WS_u_long WINAPI WS_ntohl(WS_u_long netlong)
{
    return ntohl(netlong);
}


/***********************************************************************
 *		ntohs			(WINSOCK.15)
 *		ntohs			(WS2_32.15)
 */
WS_u_short WINAPI WS_ntohs(WS_u_short netshort)
{
    return ntohs(netshort);
}


/***********************************************************************
 *		inet_ntoa		(WS2_32.12)
 */
char* WINAPI WS_inet_ntoa(struct WS_in_addr in)
{
  /* use "buffer for dummies" here because some applications have a
   * propensity to decode addresses in ws_hostent structure without
   * saving them first...
   */
    static char dbuffer[16]; /* Yes, 16: 4*3 digits + 3 '.' + 1 '\0' */

    char* s = inet_ntoa(*((struct in_addr*)&in));
    if( s )
    {
        strcpy(dbuffer, s);
        return dbuffer;
    }
    SetLastError(wsaErrno());
    return NULL;
}

/**********************************************************************
 *              WSAIoctl                (WS2_32.50)
 *
 */
INT WINAPI WSAIoctl(SOCKET s,
                    DWORD   dwIoControlCode,
                    LPVOID  lpvInBuffer,
                    DWORD   cbInBuffer,
                    LPVOID  lpbOutBuffer,
                    DWORD   cbOutBuffer,
                    LPDWORD lpcbBytesReturned,
                    LPWSAOVERLAPPED lpOverlapped,
                    LPWSAOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine)
{
   TRACE("%ld, 0x%08x, %p, %d, %p, %d, %p, %p, %p\n",
       s, dwIoControlCode, lpvInBuffer, cbInBuffer, lpbOutBuffer,
       cbOutBuffer, lpcbBytesReturned, lpOverlapped, lpCompletionRoutine);

   switch( dwIoControlCode )
   {
   case WS_FIONBIO:
        if (cbInBuffer != sizeof(WS_u_long)) {
            WSASetLastError(WSAEFAULT);
            return SOCKET_ERROR;
        }
        return WS_ioctlsocket( s, WS_FIONBIO, lpvInBuffer);

   case WS_FIONREAD:
        if (cbOutBuffer != sizeof(WS_u_long)) {
            WSASetLastError(WSAEFAULT);
            return SOCKET_ERROR;
        }
        return WS_ioctlsocket( s, WS_FIONREAD, lpbOutBuffer);

   case WS_SIO_GET_INTERFACE_LIST:
       {
           INTERFACE_INFO* intArray = (INTERFACE_INFO*)lpbOutBuffer;
           DWORD size, numInt, apiReturn;
           int fd;

           TRACE("-> SIO_GET_INTERFACE_LIST request\n");

           if (!lpbOutBuffer)
           {
               WSASetLastError(WSAEFAULT);
               return SOCKET_ERROR;
           }
           if (!lpcbBytesReturned)
           {
               WSASetLastError(WSAEFAULT);
               return SOCKET_ERROR;
           }

           fd = get_sock_fd( s, 0, NULL );
           if (fd == -1) return SOCKET_ERROR;

           apiReturn = GetAdaptersInfo(NULL, &size);
           if (apiReturn == ERROR_NO_DATA)
           {
               numInt = 0;
           }
           else if (apiReturn == ERROR_BUFFER_OVERFLOW)
           {
               PIP_ADAPTER_INFO table = HeapAlloc(GetProcessHeap(),0,size);

               if (table)
               {
                  if (GetAdaptersInfo(table, &size) == NO_ERROR)
                  {
                     PIP_ADAPTER_INFO ptr;

                     if (size*sizeof(INTERFACE_INFO)/sizeof(IP_ADAPTER_INFO) > cbOutBuffer)
                     {
                        WARN("Buffer too small = %u, cbOutBuffer = %u\n", size, cbOutBuffer);
                        HeapFree(GetProcessHeap(),0,table);
                        release_sock_fd( s, fd );
                        WSASetLastError(WSAEFAULT);
                        return SOCKET_ERROR;
                     }
                     for (ptr = table, numInt = 0; ptr;
                      ptr = ptr->Next, intArray++, numInt++)
                     {
                        unsigned int addr, mask, bcast;
                        struct ifreq ifInfo;

                        /* Socket Status Flags */
                        lstrcpynA(ifInfo.ifr_name, ptr->AdapterName, IFNAMSIZ);
                        if (ioctl(fd, SIOCGIFFLAGS, &ifInfo) < 0)
                        {
                           ERR("Error obtaining status flags for socket!\n");
                           HeapFree(GetProcessHeap(),0,table);
                           release_sock_fd( s, fd );
                           WSASetLastError(WSAEINVAL);
                           return SOCKET_ERROR;
                        }
                        else
                        {
                           /* set flags; the values of IFF_* are not the same
                              under Linux and Windows, therefore must generate
                              new flags */
                           intArray->iiFlags = 0;
                           if (ifInfo.ifr_flags & IFF_BROADCAST)
                              intArray->iiFlags |= WS_IFF_BROADCAST;
#ifdef IFF_POINTOPOINT
                           if (ifInfo.ifr_flags & IFF_POINTOPOINT)
                              intArray->iiFlags |= WS_IFF_POINTTOPOINT;
#endif
                           if (ifInfo.ifr_flags & IFF_LOOPBACK)
                              intArray->iiFlags |= WS_IFF_LOOPBACK;
                           if (ifInfo.ifr_flags & IFF_UP)
                              intArray->iiFlags |= WS_IFF_UP;
                           if (ifInfo.ifr_flags & IFF_MULTICAST)
                              intArray->iiFlags |= WS_IFF_MULTICAST;
                        }

                        addr = inet_addr(ptr->IpAddressList.IpAddress.String);
                        mask = inet_addr(ptr->IpAddressList.IpMask.String);
                        bcast = addr | ~mask;
                        intArray->iiAddress.AddressIn.sin_family = AF_INET;
                        intArray->iiAddress.AddressIn.sin_port = 0;
                        intArray->iiAddress.AddressIn.sin_addr.WS_s_addr =
                         addr;
                        intArray->iiNetmask.AddressIn.sin_family = AF_INET;
                        intArray->iiNetmask.AddressIn.sin_port = 0;
                        intArray->iiNetmask.AddressIn.sin_addr.WS_s_addr =
                         mask;
                        intArray->iiBroadcastAddress.AddressIn.sin_family =
                         AF_INET;
                        intArray->iiBroadcastAddress.AddressIn.sin_port = 0;
                        intArray->iiBroadcastAddress.AddressIn.sin_addr.
                         WS_s_addr = bcast;
                     }
                  }
                  else
                  {
                     ERR("Unable to get interface table!\n");
                     release_sock_fd( s, fd );
                     HeapFree(GetProcessHeap(),0,table);
                     WSASetLastError(WSAEINVAL);
                     return SOCKET_ERROR;
                  }
                  HeapFree(GetProcessHeap(),0,table);
               }
               else
               {
                  release_sock_fd( s, fd );
                  WSASetLastError(WSAEINVAL);
                  return SOCKET_ERROR;
               }
           }
           else
           {
               ERR("Unable to get interface table!\n");
               release_sock_fd( s, fd );
               WSASetLastError(WSAEINVAL);
               return SOCKET_ERROR;
           }
           /* Calculate the size of the array being returned */
           *lpcbBytesReturned = sizeof(INTERFACE_INFO) * numInt;
           release_sock_fd( s, fd );
           break;
       }

   case WS_SIO_ADDRESS_LIST_CHANGE:
       FIXME("-> SIO_ADDRESS_LIST_CHANGE request: stub\n");
       /* FIXME: error and return code depend on whether socket was created
        * with WSA_FLAG_OVERLAPPED, but there is no easy way to get this */
       break;

   case WS_SIO_ADDRESS_LIST_QUERY:
   {
        DWORD size;

        TRACE("-> SIO_ADDRESS_LIST_QUERY request\n");

        if (!lpcbBytesReturned)
        {
            WSASetLastError(WSAEFAULT);
            return SOCKET_ERROR;
        }

        if (GetAdaptersInfo(NULL, &size) == ERROR_BUFFER_OVERFLOW)
        {
            IP_ADAPTER_INFO *p, *table = HeapAlloc(GetProcessHeap(), 0, size);
            DWORD need, num;

            if (!table || GetAdaptersInfo(table, &size))
            {
                HeapFree(GetProcessHeap(), 0, table);
                WSASetLastError(WSAEINVAL);
                return SOCKET_ERROR;
            }

            for (p = table, num = 0; p; p = p->Next)
                if (p->IpAddressList.IpAddress.String[0]) num++;

            need = sizeof(SOCKET_ADDRESS_LIST) + sizeof(SOCKET_ADDRESS) * (num - 1);
            need += sizeof(SOCKADDR) * num;
            *lpcbBytesReturned = need;

            if (need > cbOutBuffer)
            {
                HeapFree(GetProcessHeap(), 0, table);
                WSASetLastError(WSAEFAULT);
                return SOCKET_ERROR;
            }

            if (lpbOutBuffer)
            {
                unsigned int i;
                SOCKET_ADDRESS *sa;
                SOCKET_ADDRESS_LIST *sa_list = (SOCKET_ADDRESS_LIST *)lpbOutBuffer;
                SOCKADDR_IN *sockaddr;

                sa = sa_list->Address;
                sockaddr = (SOCKADDR_IN *)((char *)sa + num * sizeof(SOCKET_ADDRESS));
                sa_list->iAddressCount = num;

                for (p = table, i = 0; p; p = p->Next)
                {
                    if (!p->IpAddressList.IpAddress.String[0]) continue;

                    sa[i].lpSockaddr = (SOCKADDR *)&sockaddr[i];
                    sa[i].iSockaddrLength = sizeof(SOCKADDR);

                    sockaddr[i].sin_family = AF_INET;
                    sockaddr[i].sin_port = 0;
                    sockaddr[i].sin_addr.WS_s_addr = inet_addr(p->IpAddressList.IpAddress.String);
                    i++;
                }
            }

            HeapFree(GetProcessHeap(), 0, table);
            return 0;
        }
        else
        {
            WARN("unable to get IP address list\n");
            WSASetLastError(WSAEINVAL);
            return SOCKET_ERROR;
        }
   }
   case WS_SIO_FLUSH:
	FIXME("SIO_FLUSH: stub.\n");
	break;

   case WS_SIO_GET_EXTENSION_FUNCTION_POINTER:
       FIXME("SIO_GET_EXTENSION_FUNCTION_POINTER %s: stub\n", debugstr_guid(lpvInBuffer));
       WSASetLastError(WSAEOPNOTSUPP);
       return SOCKET_ERROR;

   default:
       FIXME("unsupported WS_IOCTL cmd (%08x)\n", dwIoControlCode);
       WSASetLastError(WSAEOPNOTSUPP);
       return SOCKET_ERROR;
   }

   return 0;
}


/***********************************************************************
 *		ioctlsocket		(WS2_32.10)
 */
int WINAPI WS_ioctlsocket(SOCKET s, LONG cmd, WS_u_long *argp)
{
    int fd;
    long newcmd  = cmd;

    TRACE("socket %04lx, cmd %08x, ptr %p\n", s, cmd, argp);

    switch( cmd )
    {
    case WS_FIONREAD:
        newcmd=FIONREAD;
        break;

    case WS_FIONBIO:
        if( _get_sock_mask(s) )
        {
            /* AsyncSelect()'ed sockets are always nonblocking */
            if (*argp) return 0;
            SetLastError(WSAEINVAL);
            return SOCKET_ERROR;
        }
        fd = get_sock_fd( s, 0, NULL );
        if (fd != -1)
        {
            int ret;
            if (*argp)
            {
                _enable_event(SOCKET2HANDLE(s), 0, FD_WINE_NONBLOCKING, 0);
                ret = fcntl( fd, F_SETFL, O_NONBLOCK );
            }
            else
            {
                _enable_event(SOCKET2HANDLE(s), 0, 0, FD_WINE_NONBLOCKING);
                ret = fcntl( fd, F_SETFL, 0 );
            }
            release_sock_fd( s, fd );
            if (!ret) return 0;
            SetLastError((errno == EBADF) ? WSAENOTSOCK : wsaErrno());
        }
        return SOCKET_ERROR;

    case WS_SIOCATMARK:
        newcmd=SIOCATMARK;
        break;

    case WS_FIOASYNC:
        WARN("Warning: WS1.1 shouldn't be using async I/O\n");
        SetLastError(WSAEINVAL);
        return SOCKET_ERROR;

    case SIOCGIFBRDADDR:
    case SIOCGIFNETMASK:
    case SIOCGIFADDR:
        /* These don't need any special handling.  They are used by
           WsControl, and are here to suppress an unnecessary warning. */
        break;

    default:
        /* Netscape tries hard to use bogus ioctl 0x667e */
        /* FIXME: 0x667e above is ('f' << 8) | 126, and is a low word of
         * FIONBIO (_IOW('f', 126, u_long)), how that should be handled?
         */
        WARN("\tunknown WS_IOCTL cmd (%08x)\n", cmd);
        break;
    }

    fd = get_sock_fd( s, 0, NULL );
    if (fd != -1)
    {
        if( ioctl(fd, newcmd, (char*)argp ) == 0 )
        {
            release_sock_fd( s, fd );
            return 0;
        }
        SetLastError((errno == EBADF) ? WSAENOTSOCK : wsaErrno());
        release_sock_fd( s, fd );
    }
    return SOCKET_ERROR;
}

/***********************************************************************
 *		listen		(WS2_32.13)
 */
int WINAPI WS_listen(SOCKET s, int backlog)
{
    int fd = get_sock_fd( s, FILE_READ_DATA, NULL );

    TRACE("socket %04lx, backlog %d\n", s, backlog);
    if (fd != -1)
    {
	if (listen(fd, backlog) == 0)
	{
            release_sock_fd( s, fd );
	    _enable_event(SOCKET2HANDLE(s), FD_ACCEPT,
			  FD_WINE_LISTENING,
			  FD_CONNECT|FD_WINE_CONNECTED);
	    return 0;
	}
	SetLastError(wsaErrno());
        release_sock_fd( s, fd );
    }
    return SOCKET_ERROR;
}

/***********************************************************************
 *		recv			(WS2_32.16)
 */
int WINAPI WS_recv(SOCKET s, char *buf, int len, int flags)
{
    DWORD n, dwFlags = flags;
    WSABUF wsabuf;

    wsabuf.len = len;
    wsabuf.buf = buf;

    if ( WSARecvFrom(s, &wsabuf, 1, &n, &dwFlags, NULL, NULL, NULL, NULL) == SOCKET_ERROR )
        return SOCKET_ERROR;
    else
        return n;
}

/***********************************************************************
 *		recvfrom		(WS2_32.17)
 */
int WINAPI WS_recvfrom(SOCKET s, char *buf, INT len, int flags,
                       struct WS_sockaddr *from, int *fromlen)
{
    DWORD n, dwFlags = flags;
    WSABUF wsabuf;

    wsabuf.len = len;
    wsabuf.buf = buf;

    if ( WSARecvFrom(s, &wsabuf, 1, &n, &dwFlags, from, fromlen, NULL, NULL) == SOCKET_ERROR )
        return SOCKET_ERROR;
    else
        return n;
}

/* allocate a poll array for the corresponding fd sets */
static struct pollfd *fd_sets_to_poll( const WS_fd_set *readfds, const WS_fd_set *writefds,
                                       const WS_fd_set *exceptfds, int *count_ptr )
{
    int i, j = 0, count = 0;
    struct pollfd *fds;

    if (readfds) count += readfds->fd_count;
    if (writefds) count += writefds->fd_count;
    if (exceptfds) count += exceptfds->fd_count;
    *count_ptr = count;
    if (!count) return NULL;
    if (!(fds = HeapAlloc( GetProcessHeap(), 0, count * sizeof(fds[0])))) return NULL;
    if (readfds)
        for (i = 0; i < readfds->fd_count; i++, j++)
        {
            fds[j].fd = get_sock_fd( readfds->fd_array[i], FILE_READ_DATA, NULL );
            fds[j].events = POLLIN;
            fds[j].revents = 0;
        }
    if (writefds)
        for (i = 0; i < writefds->fd_count; i++, j++)
        {
            fds[j].fd = get_sock_fd( writefds->fd_array[i], FILE_WRITE_DATA, NULL );
            fds[j].events = POLLOUT;
            fds[j].revents = 0;
        }
    if (exceptfds)
        for (i = 0; i < exceptfds->fd_count; i++, j++)
        {
            fds[j].fd = get_sock_fd( exceptfds->fd_array[i], 0, NULL );
            fds[j].events = POLLHUP;
            fds[j].revents = 0;
        }
    return fds;
}

/* release the file descriptor obtained in fd_sets_to_poll */
/* must be called with the original fd_set arrays, before calling get_poll_results */
static void release_poll_fds( const WS_fd_set *readfds, const WS_fd_set *writefds,
                              const WS_fd_set *exceptfds, struct pollfd *fds )
{
    int i, j = 0;

    if (readfds)
    {
        for (i = 0; i < readfds->fd_count; i++, j++)
            if (fds[j].fd != -1) release_sock_fd( readfds->fd_array[i], fds[j].fd );
    }
    if (writefds)
    {
        for (i = 0; i < writefds->fd_count; i++, j++)
            if (fds[j].fd != -1) release_sock_fd( writefds->fd_array[i], fds[j].fd );
    }
    if (exceptfds)
    {
        for (i = 0; i < exceptfds->fd_count; i++, j++)
            if (fds[j].fd != -1)
            {
                /* make sure we have a real error before releasing the fd */
                if (!sock_error_p( fds[j].fd )) fds[j].revents = 0;
                release_sock_fd( exceptfds->fd_array[i], fds[j].fd );
            }
    }
}

/* map the poll results back into the Windows fd sets */
static int get_poll_results( WS_fd_set *readfds, WS_fd_set *writefds, WS_fd_set *exceptfds,
                             const struct pollfd *fds )
{
    int i, j = 0, k, total = 0;

    if (readfds)
    {
        for (i = k = 0; i < readfds->fd_count; i++, j++)
            if (fds[j].revents) readfds->fd_array[k++] = readfds->fd_array[i];
        readfds->fd_count = k;
        total += k;
    }
    if (writefds)
    {
        for (i = k = 0; i < writefds->fd_count; i++, j++)
            if (fds[j].revents) writefds->fd_array[k++] = writefds->fd_array[i];
        writefds->fd_count = k;
        total += k;
    }
    if (exceptfds)
    {
        for (i = k = 0; i < exceptfds->fd_count; i++, j++)
            if (fds[j].revents) exceptfds->fd_array[k++] = exceptfds->fd_array[i];
        exceptfds->fd_count = k;
        total += k;
    }
    return total;
}


/***********************************************************************
 *		select			(WS2_32.18)
 */
int WINAPI WS_select(int nfds, WS_fd_set *ws_readfds,
                     WS_fd_set *ws_writefds, WS_fd_set *ws_exceptfds,
                     const struct WS_timeval* ws_timeout)
{
    struct pollfd *pollfds;
    int count, ret, timeout = -1;

    TRACE("read %p, write %p, excp %p timeout %p\n",
          ws_readfds, ws_writefds, ws_exceptfds, ws_timeout);

    if (!(pollfds = fd_sets_to_poll( ws_readfds, ws_writefds, ws_exceptfds, &count )) && count)
    {
        SetLastError( ERROR_NOT_ENOUGH_MEMORY );
        return SOCKET_ERROR;
    }

    if (ws_timeout) timeout = (ws_timeout->tv_sec * 1000) + (ws_timeout->tv_usec + 999) / 1000;

    ret = poll( pollfds, count, timeout );
    release_poll_fds( ws_readfds, ws_writefds, ws_exceptfds, pollfds );

    if (ret == -1) SetLastError(wsaErrno());
    else ret = get_poll_results( ws_readfds, ws_writefds, ws_exceptfds, pollfds );
    HeapFree( GetProcessHeap(), 0, pollfds );
    return ret;
}

/* helper to send completion messages for client-only i/o operation case */
static void WS_AddCompletion( SOCKET sock, ULONG_PTR CompletionValue, NTSTATUS CompletionStatus, ULONG_PTR Information )
{
    NTSTATUS status;

    SERVER_START_REQ( add_fd_completion )
    {
        req->handle      = SOCKET2HANDLE(sock);
        req->cvalue      = CompletionValue;
        req->status      = CompletionStatus;
        req->information = Information;
        status = wine_server_call( req );
    }
    SERVER_END_REQ;
}


/***********************************************************************
 *		send			(WS2_32.19)
 */
int WINAPI WS_send(SOCKET s, const char *buf, int len, int flags)
{
    DWORD n;
    WSABUF wsabuf;

    wsabuf.len = len;
    wsabuf.buf = (char*) buf;

    if ( WSASendTo( s, &wsabuf, 1, &n, flags, NULL, 0, NULL, NULL) == SOCKET_ERROR )
        return SOCKET_ERROR;
    else
        return n;
}

/***********************************************************************
 *		WSASend			(WS2_32.72)
 */
INT WINAPI WSASend( SOCKET s, LPWSABUF lpBuffers, DWORD dwBufferCount,
                    LPDWORD lpNumberOfBytesSent, DWORD dwFlags,
                    LPWSAOVERLAPPED lpOverlapped,
                    LPWSAOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine )
{
    return WSASendTo( s, lpBuffers, dwBufferCount, lpNumberOfBytesSent, dwFlags,
                      NULL, 0, lpOverlapped, lpCompletionRoutine );
}

/***********************************************************************
 *              WSASendDisconnect       (WS2_32.73)
 */
INT WINAPI WSASendDisconnect( SOCKET s, LPWSABUF lpBuffers )
{
    return WS_shutdown( s, SD_SEND );
}


/***********************************************************************
 *		WSASendTo		(WS2_32.74)
 */
INT WINAPI WSASendTo( SOCKET s, LPWSABUF lpBuffers, DWORD dwBufferCount,
                      LPDWORD lpNumberOfBytesSent, DWORD dwFlags,
                      const struct WS_sockaddr *to, int tolen,
                      LPWSAOVERLAPPED lpOverlapped,
                      LPWSAOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine )
{
    unsigned int i, options;
    int n, fd, err;
    struct iovec iovec[WS_MSG_MAXIOVLEN];
    ULONG_PTR cvalue = (lpOverlapped && ((ULONG_PTR)lpOverlapped->hEvent & 1) == 0) ? (ULONG_PTR)lpOverlapped : 0;

    TRACE("socket %04lx, wsabuf %p, nbufs %d, flags %d, to %p, tolen %d, ovl %p, func %p\n",
          s, lpBuffers, dwBufferCount, dwFlags,
          to, tolen, lpOverlapped, lpCompletionRoutine);

    if (dwBufferCount > WS_MSG_MAXIOVLEN)
    {
        WSASetLastError( WSAEINVAL );
        return SOCKET_ERROR;
    }

    fd = get_sock_fd( s, FILE_WRITE_DATA, &options );
    TRACE( "fd=%d, options=%x\n", fd, options );

    if ( fd == -1 ) return SOCKET_ERROR;

    if ( !lpNumberOfBytesSent )
    {
        err = WSAEFAULT;
        goto error;
    }

    for ( i = 0; i < dwBufferCount; i++ )
    {
        iovec[i].iov_base = lpBuffers[i].buf;
        iovec[i].iov_len  = lpBuffers[i].len;
    }

    for (;;)
    {
        n = WS2_send( fd, iovec, dwBufferCount, to, tolen, dwFlags );
        if (n != -1 || errno != EINTR) break;
    }
    if (n == -1 && errno != EAGAIN)
    {
        err = wsaErrno();
        if (cvalue) WS_AddCompletion( s, cvalue, err, 0 );
        goto error;
    }

    if ((lpOverlapped || lpCompletionRoutine) &&
        !(options & (FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT)))
    {
        IO_STATUS_BLOCK *iosb;
        struct ws2_async *wsa = HeapAlloc( GetProcessHeap(), 0, sizeof(*wsa) );

        if ( !wsa )
        {
            err = WSAEFAULT;
            goto error;
        }
        release_sock_fd( s, fd );

        wsa->hSocket         = SOCKET2HANDLE(s);
        wsa->addr            = (struct WS_sockaddr *)to;
        wsa->addrlen.val     = tolen;
        wsa->flags           = 0;
        wsa->user_overlapped = lpOverlapped;
        wsa->completion_func = lpCompletionRoutine;
        wsa->n_iovecs        = dwBufferCount;
        memcpy( wsa->iovec, iovec, dwBufferCount * sizeof(*iovec) );

        iosb = lpOverlapped ? (IO_STATUS_BLOCK *)lpOverlapped : &wsa->local_iosb;
        if (n == -1)
        {
            iosb->u.Status = STATUS_PENDING;
            iosb->Information = 0;

            SERVER_START_REQ( register_async )
            {
                req->handle = wsa->hSocket;
                req->type   = ASYNC_TYPE_WRITE;
                req->async.callback = WS2_async_send;
                req->async.iosb     = iosb;
                req->async.arg      = wsa;
                req->async.apc      = ws2_async_apc;
                req->async.event    = lpCompletionRoutine ? 0 : lpOverlapped->hEvent;
                req->async.cvalue   = cvalue;
                err = wine_server_call( req );
            }
            SERVER_END_REQ;

            if (err != STATUS_PENDING) HeapFree( GetProcessHeap(), 0, wsa );
            WSASetLastError( NtStatusToWSAError( err ));
            return SOCKET_ERROR;
        }

        iosb->u.Status = STATUS_SUCCESS;
        iosb->Information = n;
        *lpNumberOfBytesSent = n;
        if (!wsa->completion_func)
        {
            if (cvalue) WS_AddCompletion( s, cvalue, STATUS_SUCCESS, n );
            SetEvent( lpOverlapped->hEvent );
            HeapFree( GetProcessHeap(), 0, wsa );
        }
        else NtQueueApcThread( GetCurrentThread(), (PNTAPCFUNC)ws2_async_apc,
                               (ULONG_PTR)wsa, (ULONG_PTR)iosb, 0 );
        return 0;
    }

    if ( _is_blocking(s) )
    {
        /* On a blocking non-overlapped stream socket,
         * sending blocks until the entire buffer is sent. */
        DWORD timeout_start = GetTickCount();
        unsigned int first_buff = 0;

        *lpNumberOfBytesSent = 0;

        while (first_buff < dwBufferCount)
        {
            struct pollfd pfd;
            int timeout = GET_SNDTIMEO(fd);

            if (n >= 0)
            {
                *lpNumberOfBytesSent += n;
                while (first_buff < dwBufferCount && iovec[first_buff].iov_len <= n)
                    n -= iovec[first_buff++].iov_len;
                if (first_buff >= dwBufferCount) break;
                iovec[first_buff].iov_base = (char*)iovec[first_buff].iov_base + n;
                iovec[first_buff].iov_len -= n;
            }

            if (timeout != -1)
            {
                timeout -= GetTickCount() - timeout_start;
                if (timeout < 0) timeout = 0;
            }

            pfd.fd = fd;
            pfd.events = POLLOUT;

            if (!timeout || !poll( &pfd, 1, timeout ))
            {
                err = WSAETIMEDOUT;
                goto error; /* msdn says a timeout in send is fatal */
            }

            n = WS2_send( fd, iovec + first_buff, dwBufferCount - first_buff, to, tolen, dwFlags );
            if (n == -1 && errno != EAGAIN && errno != EINTR)
            {
                err = wsaErrno();
                goto error;
            }
        }
    }
    else  /* non-blocking */
    {
        _enable_event(SOCKET2HANDLE(s), FD_WRITE, 0, 0);
        if (n == -1)
        {
            err = WSAEWOULDBLOCK;
            goto error;
        }
        *lpNumberOfBytesSent = n;
    }

    TRACE(" -> %i bytes\n", *lpNumberOfBytesSent);

    release_sock_fd( s, fd );
    return 0;

error:
    release_sock_fd( s, fd );
    WARN(" -> ERROR %d\n", err);
    WSASetLastError(err);
    return SOCKET_ERROR;
}

/***********************************************************************
 *		sendto		(WS2_32.20)
 */
int WINAPI WS_sendto(SOCKET s, const char *buf, int len, int flags,
                              const struct WS_sockaddr *to, int tolen)
{
    DWORD n;
    WSABUF wsabuf;

    wsabuf.len = len;
    wsabuf.buf = (char*) buf;

    if ( WSASendTo(s, &wsabuf, 1, &n, flags, to, tolen, NULL, NULL) == SOCKET_ERROR )
        return SOCKET_ERROR;
    else
        return n;
}

/***********************************************************************
 *		setsockopt		(WS2_32.21)
 */
int WINAPI WS_setsockopt(SOCKET s, int level, int optname,
                                  const char *optval, int optlen)
{
    int fd;
    int woptval;
    struct linger linger;
    struct timeval tval;

    TRACE("socket: %04lx, level 0x%x, name 0x%x, ptr %p, len %d\n",
          s, level, optname, optval, optlen);

    /* some broken apps pass the value directly instead of a pointer to it */
    if(IS_INTRESOURCE(optval))
    {
        SetLastError(WSAEFAULT);
        return SOCKET_ERROR;
    }

    switch(level)
    {
    case WS_SOL_SOCKET:
        switch(optname)
        {
        /* Some options need some conversion before they can be sent to
         * setsockopt. The conversions are done here, then they will fall though
         * to the general case. Special options that are not passed to
         * setsockopt follow below that.*/

        case WS_SO_DONTLINGER:
            linger.l_onoff  = *((const int*)optval) ? 0: 1;
            linger.l_linger = 0;
            level = SOL_SOCKET;
            optname = SO_LINGER;
            optval = (char*)&linger;
            optlen = sizeof(struct linger);
            break;

        case WS_SO_LINGER:
            linger.l_onoff  = ((LINGER*)optval)->l_onoff;
            linger.l_linger  = ((LINGER*)optval)->l_linger;
            /* FIXME: what is documented behavior if SO_LINGER optval
               is null?? */
            level = SOL_SOCKET;
            optname = SO_LINGER;
            optval = (char*)&linger;
            optlen = sizeof(struct linger);
            break;

        case WS_SO_RCVBUF:
            if (*(const int*)optval < 2048)
            {
                WARN("SO_RCVBF for %d bytes is too small: ignored\n", *(const int*)optval );
                return 0;
            }
            /* Fall through */

        /* The options listed here don't need any special handling. Thanks to
         * the conversion happening above, options from there will fall through
         * to this, too.*/
        case WS_SO_ACCEPTCONN:
        case WS_SO_BROADCAST:
        case WS_SO_ERROR:
        case WS_SO_KEEPALIVE:
        case WS_SO_OOBINLINE:
        /* BSD socket SO_REUSEADDR is not 100% compatible to winsock semantics.
         * however, using it the BSD way fixes bug 8513 and seems to be what
         * most programmers assume, anyway */
        case WS_SO_REUSEADDR:
        case WS_SO_SNDBUF:
        case WS_SO_TYPE:
            convert_sockopt(&level, &optname);
            break;

        /* SO_DEBUG is a privileged operation, ignore it. */
        case WS_SO_DEBUG:
            TRACE("Ignoring SO_DEBUG\n");
            return 0;

        /* For some reason the game GrandPrixLegends does set SO_DONTROUTE on its
         * socket. According to MSDN, this option is silently ignored.*/
        case WS_SO_DONTROUTE:
            TRACE("Ignoring SO_DONTROUTE\n");
            return 0;

        /* Stops two sockets from being bound to the same port. Always happens
         * on unix systems, so just drop it. */
        case WS_SO_EXCLUSIVEADDRUSE:
            TRACE("Ignoring SO_EXCLUSIVEADDRUSE, is always set.\n");
            return 0;

        /* SO_OPENTYPE does not require a valid socket handle. */
        case WS_SO_OPENTYPE:
            if (!optlen || optlen < sizeof(int) || !optval)
            {
                SetLastError(WSAEFAULT);
                return SOCKET_ERROR;
            }
            get_per_thread_data()->opentype = *(const int *)optval;
            TRACE("setting global SO_OPENTYPE = 0x%x\n", *((int*)optval) );
            return 0;

#ifdef SO_RCVTIMEO
        case WS_SO_RCVTIMEO:
#endif
#ifdef SO_SNDTIMEO
        case WS_SO_SNDTIMEO:
#endif
#if defined(SO_RCVTIMEO) || defined(SO_SNDTIMEO)
            if (optval && optlen == sizeof(UINT32)) {
                /* WinSock passes milliseconds instead of struct timeval */
                tval.tv_usec = (*(const UINT32*)optval % 1000) * 1000;
                tval.tv_sec = *(const UINT32*)optval / 1000;
                /* min of 500 milliseconds */
                if (tval.tv_sec == 0 && tval.tv_usec < 500000)
                    tval.tv_usec = 500000;
                optlen = sizeof(struct timeval);
                optval = (char*)&tval;
            } else if (optlen == sizeof(struct timeval)) {
                WARN("SO_SND/RCVTIMEO for %d bytes: assuming unixism\n", optlen);
            } else {
                WARN("SO_SND/RCVTIMEO for %d bytes is weird: ignored\n", optlen);
                return 0;
            }
            convert_sockopt(&level, &optname);
            break;
#endif

        default:
            TRACE("Unknown SOL_SOCKET optname: 0x%08x\n", optname);
            SetLastError(WSAENOPROTOOPT);
            return SOCKET_ERROR;
        }
        break; /* case WS_SOL_SOCKET */

#ifdef HAVE_IPX
    case NSPROTO_IPX:
        switch(optname)
        {
        case IPX_PTYPE:
            fd = get_sock_fd( s, 0, NULL );
            TRACE("trying to set IPX_PTYPE: %d (fd: %d)\n", *(const int*)optval, fd);

            /* We try to set the ipx type on ipx socket level. */
#ifdef SOL_IPX
            if(setsockopt(fd, SOL_IPX, IPX_TYPE, optval, optlen) == -1)
            {
                ERR("IPX: could not set ipx option type; expect weird behaviour\n");
                release_sock_fd( s, fd );
                return SOCKET_ERROR;
            }
#else
            {
                struct ipx val;
                /* Should we retrieve val using a getsockopt call and then
                 * set the modified one? */
                val.ipx_pt = *optval;
                setsockopt(fd, 0, SO_DEFAULT_HEADERS, &val, sizeof(struct ipx));
            }
#endif
            release_sock_fd( s, fd );
            return 0;

        case IPX_FILTERPTYPE:
            /* Sets the receive filter packet type, at the moment we don't support it */
            FIXME("IPX_FILTERPTYPE: %x\n", *optval);
            /* Returning 0 is better for now than returning a SOCKET_ERROR */
            return 0;

        default:
            FIXME("opt_name:%x\n", optname);
            return SOCKET_ERROR;
        }
        break; /* case NSPROTO_IPX */
#endif

    /* Levels WS_IPPROTO_TCP and WS_IPPROTO_IP convert directly */
    case WS_IPPROTO_TCP:
        switch(optname)
        {
        case WS_TCP_NODELAY:
            convert_sockopt(&level, &optname);
            break;
        default:
            FIXME("Unknown IPPROTO_TCP optname 0x%08x\n", optname);
            return SOCKET_ERROR;
        }
        break;

    case WS_IPPROTO_IP:
        switch(optname)
        {
        case WS_IP_ADD_MEMBERSHIP:
        case WS_IP_DROP_MEMBERSHIP:
#ifdef IP_HDRINCL
        case WS_IP_HDRINCL:
#endif
        case WS_IP_MULTICAST_IF:
        case WS_IP_MULTICAST_LOOP:
        case WS_IP_MULTICAST_TTL:
        case WS_IP_OPTIONS:
        case WS_IP_TOS:
        case WS_IP_TTL:
            convert_sockopt(&level, &optname);
            break;
        case WS_IP_DONTFRAGMENT:
            FIXME("IP_DONTFRAGMENT is silently ignored!\n");
            return 0;
        default:
            FIXME("Unknown IPPROTO_IP optname 0x%08x\n", optname);
            return SOCKET_ERROR;
        }
        break;

    default:
        FIXME("Unknown level: 0x%08x\n", level);
        return SOCKET_ERROR;
    } /* end switch(level) */

    /* avoid endianness issues if argument is a 16-bit int */
    if (optval && optlen < sizeof(int))
    {
        woptval= *((const INT16 *) optval);
        optval= (char*) &woptval;
        optlen=sizeof(int);
    }
    fd = get_sock_fd( s, 0, NULL );
    if (fd == -1) return SOCKET_ERROR;

    if (setsockopt(fd, level, optname, optval, optlen) == 0)
    {
        release_sock_fd( s, fd );
        return 0;
    }
    TRACE("Setting socket error, %d\n", wsaErrno());
    SetLastError(wsaErrno());
    release_sock_fd( s, fd );

    return SOCKET_ERROR;
}

/***********************************************************************
 *		shutdown		(WS2_32.22)
 */
int WINAPI WS_shutdown(SOCKET s, int how)
{
    int fd, err = WSAENOTSOCK;
    unsigned int options, clear_flags = 0;

    fd = get_sock_fd( s, 0, &options );
    TRACE("socket %04lx, how %i %x\n", s, how, options );

    if (fd == -1)
        return SOCKET_ERROR;

    switch( how )
    {
    case 0: /* drop receives */
        clear_flags |= FD_READ;
        break;
    case 1: /* drop sends */
        clear_flags |= FD_WRITE;
        break;
    case 2: /* drop all */
        clear_flags |= FD_READ|FD_WRITE;
    default:
        clear_flags |= FD_WINE_LISTENING;
    }

    if (!(options & (FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT)))
    {
        switch ( how )
        {
        case SD_RECEIVE:
            err = WS2_register_async_shutdown( s, ASYNC_TYPE_READ );
            break;
        case SD_SEND:
            err = WS2_register_async_shutdown( s, ASYNC_TYPE_WRITE );
            break;
        case SD_BOTH:
        default:
            err = WS2_register_async_shutdown( s, ASYNC_TYPE_READ );
            if (!err) err = WS2_register_async_shutdown( s, ASYNC_TYPE_WRITE );
            break;
        }
        if (err) goto error;
    }
    else /* non-overlapped mode */
    {
        if ( shutdown( fd, how ) )
        {
            err = wsaErrno();
            goto error;
        }
    }

    release_sock_fd( s, fd );
    _enable_event( SOCKET2HANDLE(s), 0, 0, clear_flags );
    if ( how > 1) WSAAsyncSelect( s, 0, 0, 0 );
    return 0;

error:
    release_sock_fd( s, fd );
    _enable_event( SOCKET2HANDLE(s), 0, 0, clear_flags );
    WSASetLastError( err );
    return SOCKET_ERROR;
}

/***********************************************************************
 *		socket		(WS2_32.23)
 */
SOCKET WINAPI WS_socket(int af, int type, int protocol)
{
    TRACE("af=%d type=%d protocol=%d\n", af, type, protocol);

    return WSASocketA( af, type, protocol, NULL, 0,
                       get_per_thread_data()->opentype ? 0 : WSA_FLAG_OVERLAPPED );
}


/***********************************************************************
 *		gethostbyaddr		(WS2_32.51)
 */
struct WS_hostent* WINAPI WS_gethostbyaddr(const char *addr, int len, int type)
{
    struct WS_hostent *retval = NULL;
    struct hostent* host;

#ifdef HAVE_LINUX_GETHOSTBYNAME_R_6
    char *extrabuf;
    int ebufsize=1024;
    struct hostent hostentry;
    int locerr=ENOBUFS;
    host = NULL;
    extrabuf=HeapAlloc(GetProcessHeap(),0,ebufsize) ;
    while(extrabuf) {
        int res = gethostbyaddr_r(addr, len, type,
                                  &hostentry, extrabuf, ebufsize, &host, &locerr);
        if( res != ERANGE) break;
        ebufsize *=2;
        extrabuf=HeapReAlloc(GetProcessHeap(),0,extrabuf,ebufsize) ;
    }
    if (!host) SetLastError((locerr < 0) ? wsaErrno() : wsaHerrno(locerr));
#else
    EnterCriticalSection( &csWSgetXXXbyYYY );
    host = gethostbyaddr(addr, len, type);
    if (!host) SetLastError((h_errno < 0) ? wsaErrno() : wsaHerrno(h_errno));
#endif
    if( host != NULL ) retval = WS_dup_he(host);
#ifdef  HAVE_LINUX_GETHOSTBYNAME_R_6
    HeapFree(GetProcessHeap(),0,extrabuf);
#else
    LeaveCriticalSection( &csWSgetXXXbyYYY );
#endif
    TRACE("ptr %p, len %d, type %d ret %p\n", addr, len, type, retval);
    return retval;
}

/***********************************************************************
 *		gethostbyname		(WS2_32.52)
 */
struct WS_hostent* WINAPI WS_gethostbyname(const char* name)
{
    struct WS_hostent *retval = NULL;
    struct hostent*     host;
#ifdef  HAVE_LINUX_GETHOSTBYNAME_R_6
    char *extrabuf;
    int ebufsize=1024;
    struct hostent hostentry;
    int locerr = ENOBUFS;
#endif
    char buf[100];
    if( !name || !name[0]) {
        name = buf;
        if( gethostname( buf, 100) == -1) {
            SetLastError( WSAENOBUFS); /* appropriate ? */
            return retval;
        }
    }
#ifdef  HAVE_LINUX_GETHOSTBYNAME_R_6
    host = NULL;
    extrabuf=HeapAlloc(GetProcessHeap(),0,ebufsize) ;
    while(extrabuf) {
        int res = gethostbyname_r(name, &hostentry, extrabuf, ebufsize, &host, &locerr);
        if( res != ERANGE) break;
        ebufsize *=2;
        extrabuf=HeapReAlloc(GetProcessHeap(),0,extrabuf,ebufsize) ;
    }
    if (!host) SetLastError((locerr < 0) ? wsaErrno() : wsaHerrno(locerr));
#else
    EnterCriticalSection( &csWSgetXXXbyYYY );
    host = gethostbyname(name);
    if (!host) SetLastError((h_errno < 0) ? wsaErrno() : wsaHerrno(h_errno));
#endif
    if (host) retval = WS_dup_he(host);
#ifdef  HAVE_LINUX_GETHOSTBYNAME_R_6
    HeapFree(GetProcessHeap(),0,extrabuf);
#else
    LeaveCriticalSection( &csWSgetXXXbyYYY );
#endif
    TRACE( "%s ret %p\n", debugstr_a(name), retval );
    return retval;
}


/***********************************************************************
 *		getprotobyname		(WS2_32.53)
 */
struct WS_protoent* WINAPI WS_getprotobyname(const char* name)
{
    struct WS_protoent* retval = NULL;
#ifdef HAVE_GETPROTOBYNAME
    struct protoent*     proto;
    EnterCriticalSection( &csWSgetXXXbyYYY );
    if( (proto = getprotobyname(name)) != NULL )
    {
        retval = WS_dup_pe(proto);
    }
    else {
        MESSAGE("protocol %s not found; You might want to add "
                "this to /etc/protocols\n", debugstr_a(name) );
        SetLastError(WSANO_DATA);
    }
    LeaveCriticalSection( &csWSgetXXXbyYYY );
#endif
    TRACE( "%s ret %p\n", debugstr_a(name), retval );
    return retval;
}


/***********************************************************************
 *		getprotobynumber	(WS2_32.54)
 */
struct WS_protoent* WINAPI WS_getprotobynumber(int number)
{
    struct WS_protoent* retval = NULL;
#ifdef HAVE_GETPROTOBYNUMBER
    struct protoent*     proto;
    EnterCriticalSection( &csWSgetXXXbyYYY );
    if( (proto = getprotobynumber(number)) != NULL )
    {
        retval = WS_dup_pe(proto);
    }
    else {
        MESSAGE("protocol number %d not found; You might want to add "
                "this to /etc/protocols\n", number );
        SetLastError(WSANO_DATA);
    }
    LeaveCriticalSection( &csWSgetXXXbyYYY );
#endif
    TRACE("%i ret %p\n", number, retval);
    return retval;
}


/***********************************************************************
 *		getservbyname		(WS2_32.55)
 */
struct WS_servent* WINAPI WS_getservbyname(const char *name, const char *proto)
{
    struct WS_servent* retval = NULL;
    struct servent*     serv;
    char *name_str;
    char *proto_str = NULL;

    if (!(name_str = strdup_lower(name))) return NULL;

    if (proto && *proto)
    {
        if (!(proto_str = strdup_lower(proto)))
        {
            HeapFree( GetProcessHeap(), 0, name_str );
            return NULL;
        }
    }

    EnterCriticalSection( &csWSgetXXXbyYYY );
    serv = getservbyname(name_str, proto_str);
    if( serv != NULL )
    {
        retval = WS_dup_se(serv);
    }
    else SetLastError(WSANO_DATA);
    LeaveCriticalSection( &csWSgetXXXbyYYY );
    HeapFree( GetProcessHeap(), 0, proto_str );
    HeapFree( GetProcessHeap(), 0, name_str );
    TRACE( "%s, %s ret %p\n", debugstr_a(name), debugstr_a(proto), retval );
    return retval;
}

/***********************************************************************
 *		freeaddrinfo		(WS2_32.@)
 */
void WINAPI WS_freeaddrinfo(struct WS_addrinfo *res)
{
    while (res) {
        struct WS_addrinfo *next;

        HeapFree(GetProcessHeap(),0,res->ai_canonname);
        HeapFree(GetProcessHeap(),0,res->ai_addr);
        next = res->ai_next;
        HeapFree(GetProcessHeap(),0,res);
        res = next;
    }
}

/* helper functions for getaddrinfo()/getnameinfo() */
static int convert_aiflag_w2u(int winflags) {
    int i, unixflags = 0;

    for (i=0;i<sizeof(ws_aiflag_map)/sizeof(ws_aiflag_map[0]);i++)
        if (ws_aiflag_map[i][0] & winflags) {
            unixflags |= ws_aiflag_map[i][1];
            winflags &= ~ws_aiflag_map[i][0];
        }
    if (winflags)
        FIXME("Unhandled windows AI_xxx flags %x\n", winflags);
    return unixflags;
}

static int convert_niflag_w2u(int winflags) {
    int i, unixflags = 0;

    for (i=0;i<sizeof(ws_niflag_map)/sizeof(ws_niflag_map[0]);i++)
        if (ws_niflag_map[i][0] & winflags) {
            unixflags |= ws_niflag_map[i][1];
            winflags &= ~ws_niflag_map[i][0];
        }
    if (winflags)
        FIXME("Unhandled windows NI_xxx flags %x\n", winflags);
    return unixflags;
}

static int convert_aiflag_u2w(int unixflags) {
    int i, winflags = 0;

    for (i=0;i<sizeof(ws_aiflag_map)/sizeof(ws_aiflag_map[0]);i++)
        if (ws_aiflag_map[i][1] & unixflags) {
            winflags |= ws_aiflag_map[i][0];
            unixflags &= ~ws_aiflag_map[i][1];
        }
    if (unixflags) /* will warn usually */
        WARN("Unhandled UNIX AI_xxx flags %x\n", unixflags);
    return winflags;
}

static int convert_eai_u2w(int unixret) {
    int i;

    for (i=0;ws_eai_map[i][0];i++)
        if (ws_eai_map[i][1] == unixret)
            return ws_eai_map[i][0];
    return unixret;
}

/***********************************************************************
 *		getaddrinfo		(WS2_32.@)
 */
int WINAPI WS_getaddrinfo(LPCSTR nodename, LPCSTR servname, const struct WS_addrinfo *hints, struct WS_addrinfo **res)
{
#ifdef HAVE_GETADDRINFO
    struct addrinfo *unixaires = NULL;
    int   result;
    struct addrinfo unixhints, *punixhints = NULL;
    CHAR *node = NULL, *serv = NULL;

    if (nodename)
        if (!(node = strdup_lower(nodename))) return WSA_NOT_ENOUGH_MEMORY;

    if (servname) {
        if (!(serv = strdup_lower(servname))) {
            HeapFree(GetProcessHeap(), 0, node);
            return WSA_NOT_ENOUGH_MEMORY;
        }
    }

    if (hints) {
        punixhints = &unixhints;

        memset(&unixhints, 0, sizeof(unixhints));
        punixhints->ai_flags    = convert_aiflag_w2u(hints->ai_flags);
        if (hints->ai_family == 0) /* wildcard, specific to getaddrinfo() */
            punixhints->ai_family = 0;
        else
            punixhints->ai_family = convert_af_w2u(hints->ai_family);
        if (hints->ai_socktype == 0) /* wildcard, specific to getaddrinfo() */
            punixhints->ai_socktype = 0;
        else
            punixhints->ai_socktype = convert_socktype_w2u(hints->ai_socktype);
        if (hints->ai_protocol == 0) /* wildcard, specific to getaddrinfo() */
            punixhints->ai_protocol = 0;
        else
            punixhints->ai_protocol = convert_proto_w2u(hints->ai_protocol);
    }

    /* getaddrinfo(3) is thread safe, no need to wrap in CS */
    result = getaddrinfo(nodename, servname, punixhints, &unixaires);

    TRACE("%s, %s %p -> %p %d\n", nodename, servname, hints, res, result);

    HeapFree(GetProcessHeap(), 0, node);
    HeapFree(GetProcessHeap(), 0, serv);

    if (!result) {
        struct addrinfo *xuai = unixaires;
        struct WS_addrinfo **xai = res;

        *xai = NULL;
        while (xuai) {
            struct WS_addrinfo *ai = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY, sizeof(struct WS_addrinfo));
            int len;

            if (!ai)
                goto outofmem;

            *xai = ai;xai = &ai->ai_next;
            ai->ai_flags    = convert_aiflag_u2w(xuai->ai_flags);
            ai->ai_family   = convert_af_u2w(xuai->ai_family);
            ai->ai_socktype = convert_socktype_u2w(xuai->ai_socktype);
            ai->ai_protocol = convert_proto_u2w(xuai->ai_protocol);
            if (xuai->ai_canonname) {
                TRACE("canon name - %s\n",debugstr_a(xuai->ai_canonname));
                ai->ai_canonname = HeapAlloc(GetProcessHeap(),0,strlen(xuai->ai_canonname)+1);
                if (!ai->ai_canonname)
                    goto outofmem;
                strcpy(ai->ai_canonname,xuai->ai_canonname);
            }
            len = xuai->ai_addrlen;
            ai->ai_addr = HeapAlloc(GetProcessHeap(),0,len);
            if (!ai->ai_addr)
                goto outofmem;
            ai->ai_addrlen = len;
            do {
                int winlen = ai->ai_addrlen;

                if (!ws_sockaddr_u2ws(xuai->ai_addr, ai->ai_addr, &winlen)) {
                    ai->ai_addrlen = winlen;
                    break;
                }
                len = 2*len;
                ai->ai_addr = HeapReAlloc(GetProcessHeap(),0,ai->ai_addr,len);
                if (!ai->ai_addr)
                    goto outofmem;
                ai->ai_addrlen = len;
            } while (1);
            xuai = xuai->ai_next;
        }
        freeaddrinfo(unixaires);
    } else {
        result = convert_eai_u2w(result);
        *res = NULL;
    }
    return result;

outofmem:
    if (*res) WS_freeaddrinfo(*res);
    if (unixaires) freeaddrinfo(unixaires);
    *res = NULL;
    return WSA_NOT_ENOUGH_MEMORY;
#else
    FIXME("getaddrinfo() failed, not found during buildtime.\n");
    return EAI_FAIL;
#endif
}

/***********************************************************************
 *		GetAddrInfoW		(WS2_32.@)
 */
int WINAPI GetAddrInfoW(LPCWSTR nodename, LPCWSTR servname, const ADDRINFOW *hints, PADDRINFOW *res)
{
    FIXME("empty stub!\n");
    return EAI_FAIL;
}

int WINAPI WS_getnameinfo(const SOCKADDR *sa, WS_socklen_t salen, PCHAR host,
                          DWORD hostlen, PCHAR serv, DWORD servlen, INT flags)
{
#ifdef HAVE_GETNAMEINFO
    int ret;
    union generic_unix_sockaddr sa_u;
    unsigned int size;

    TRACE("%s %d %p %d %p %d %d\n", debugstr_sockaddr(sa), salen, host, hostlen,
          serv, servlen, flags);

    size = ws_sockaddr_ws2u(sa, salen, &sa_u);
    if (!size)
    {
        WSASetLastError(WSAEFAULT);
        return WSA_NOT_ENOUGH_MEMORY;
    }
    ret = getnameinfo(&sa_u.addr, size, host, hostlen, serv, servlen, convert_niflag_w2u(flags));
    return convert_eai_u2w(ret);
#else
    FIXME("getnameinfo() failed, not found during buildtime.\n");
    return EAI_FAIL;
#endif
}

/***********************************************************************
 *		getservbyport		(WS2_32.56)
 */
struct WS_servent* WINAPI WS_getservbyport(int port, const char *proto)
{
    struct WS_servent* retval = NULL;
#ifdef HAVE_GETSERVBYPORT
    struct servent*     serv;
    char *proto_str = NULL;

    if (proto && *proto)
    {
        if (!(proto_str = strdup_lower(proto))) return NULL;
    }
    EnterCriticalSection( &csWSgetXXXbyYYY );
    if( (serv = getservbyport(port, proto_str)) != NULL ) {
        retval = WS_dup_se(serv);
    }
    else SetLastError(WSANO_DATA);
    LeaveCriticalSection( &csWSgetXXXbyYYY );
    HeapFree( GetProcessHeap(), 0, proto_str );
#endif
    TRACE("%d (i.e. port %d), %s ret %p\n", port, (int)ntohl(port), debugstr_a(proto), retval);
    return retval;
}


/***********************************************************************
 *              gethostname           (WS2_32.57)
 */
int WINAPI WS_gethostname(char *name, int namelen)
{
    TRACE("name %p, len %d\n", name, namelen);

    if (gethostname(name, namelen) == 0)
    {
        TRACE("<- '%s'\n", name);
        return 0;
    }
    SetLastError((errno == EINVAL) ? WSAEFAULT : wsaErrno());
    TRACE("<- ERROR !\n");
    return SOCKET_ERROR;
}


/* ------------------------------------- Windows sockets extensions -- *
 *								       *
 * ------------------------------------------------------------------- */

/***********************************************************************
 *		WSAEnumNetworkEvents (WS2_32.36)
 */
int WINAPI WSAEnumNetworkEvents(SOCKET s, WSAEVENT hEvent, LPWSANETWORKEVENTS lpEvent)
{
    int ret;

    TRACE("%08lx, hEvent %p, lpEvent %p\n", s, hEvent, lpEvent );

    SERVER_START_REQ( get_socket_event )
    {
        req->handle  = SOCKET2HANDLE(s);
        req->service = TRUE;
        req->c_event = hEvent;
        wine_server_set_reply( req, lpEvent->iErrorCode, sizeof(lpEvent->iErrorCode) );
        if (!(ret = wine_server_call(req))) lpEvent->lNetworkEvents = reply->pmask & reply->mask;
    }
    SERVER_END_REQ;
    if (!ret) return 0;
    SetLastError(WSAEINVAL);
    return SOCKET_ERROR;
}

/***********************************************************************
 *		WSAEventSelect (WS2_32.39)
 */
int WINAPI WSAEventSelect(SOCKET s, WSAEVENT hEvent, LONG lEvent)
{
    int ret;

    TRACE("%08lx, hEvent %p, event %08x\n", s, hEvent, lEvent);

    SERVER_START_REQ( set_socket_event )
    {
        req->handle = SOCKET2HANDLE(s);
        req->mask   = lEvent;
        req->event  = hEvent;
        req->window = 0;
        req->msg    = 0;
        ret = wine_server_call( req );
    }
    SERVER_END_REQ;
    if (!ret) return 0;
    SetLastError(WSAEINVAL);
    return SOCKET_ERROR;
}

/**********************************************************************
 *      WSAGetOverlappedResult (WS2_32.40)
 */
BOOL WINAPI WSAGetOverlappedResult( SOCKET s, LPWSAOVERLAPPED lpOverlapped,
                                    LPDWORD lpcbTransfer, BOOL fWait,
                                    LPDWORD lpdwFlags )
{
    NTSTATUS status;

    TRACE( "socket %04lx ovl %p trans %p, wait %d flags %p\n",
           s, lpOverlapped, lpcbTransfer, fWait, lpdwFlags );

    if ( lpOverlapped == NULL )
    {
        ERR( "Invalid pointer\n" );
        WSASetLastError(WSA_INVALID_PARAMETER);
        return FALSE;
    }

    status = lpOverlapped->Internal;
    if (status == STATUS_PENDING)
    {
        if (!fWait)
        {
            SetLastError( WSA_IO_INCOMPLETE );
            return FALSE;
        }

        if (WaitForSingleObject( lpOverlapped->hEvent ? lpOverlapped->hEvent : SOCKET2HANDLE(s),
                                 INFINITE ) == WAIT_FAILED)
            return FALSE;
        status = lpOverlapped->Internal;
    }

    if ( lpcbTransfer )
        *lpcbTransfer = lpOverlapped->InternalHigh;

    if ( lpdwFlags )
        *lpdwFlags = lpOverlapped->u.s.Offset;

    if (status) SetLastError( RtlNtStatusToDosError(status) );
    return !status;
}


/***********************************************************************
 *      WSAAsyncSelect			(WS2_32.101)
 */
INT WINAPI WSAAsyncSelect(SOCKET s, HWND hWnd, UINT uMsg, LONG lEvent)
{
    int ret;

    TRACE("%lx, hWnd %p, uMsg %08x, event %08x\n", s, hWnd, uMsg, lEvent);

    SERVER_START_REQ( set_socket_event )
    {
        req->handle = SOCKET2HANDLE(s);
        req->mask   = lEvent;
        req->event  = 0;
        req->window = hWnd;
        req->msg    = uMsg;
        ret = wine_server_call( req );
    }
    SERVER_END_REQ;
    if (!ret) return 0;
    SetLastError(WSAEINVAL);
    return SOCKET_ERROR;
}

/***********************************************************************
 *      WSACreateEvent          (WS2_32.31)
 *
 */
WSAEVENT WINAPI WSACreateEvent(void)
{
    /* Create a manual-reset event, with initial state: unsignaled */
    TRACE("\n");

    return CreateEventW(NULL, TRUE, FALSE, NULL);
}

/***********************************************************************
 *      WSACloseEvent          (WS2_32.29)
 *
 */
BOOL WINAPI WSACloseEvent(WSAEVENT event)
{
    TRACE ("event=%p\n", event);

    return CloseHandle(event);
}

/***********************************************************************
 *      WSASocketA          (WS2_32.78)
 *
 */
SOCKET WINAPI WSASocketA(int af, int type, int protocol,
                         LPWSAPROTOCOL_INFOA lpProtocolInfo,
                         GROUP g, DWORD dwFlags)
{
    INT len;
    WSAPROTOCOL_INFOW info;

    TRACE("af=%d type=%d protocol=%d protocol_info=%p group=%d flags=0x%x\n",
          af, type, protocol, lpProtocolInfo, g, dwFlags);

    if (!lpProtocolInfo) return WSASocketW(af, type, protocol, NULL, g, dwFlags);

    memcpy(&info, lpProtocolInfo, FIELD_OFFSET(WSAPROTOCOL_INFOW, szProtocol));
    len = MultiByteToWideChar(CP_ACP, 0, lpProtocolInfo->szProtocol, -1,
                              info.szProtocol, WSAPROTOCOL_LEN + 1);

    if (!len)
    {
        WSASetLastError( WSAEINVAL);
        return SOCKET_ERROR;
    }

    return WSASocketW(af, type, protocol, &info, g, dwFlags);
}

/***********************************************************************
 *      WSASocketW          (WS2_32.79)
 *
 */
SOCKET WINAPI WSASocketW(int af, int type, int protocol,
                         LPWSAPROTOCOL_INFOW lpProtocolInfo,
                         GROUP g, DWORD dwFlags)
{
    SOCKET ret;

   /*
      FIXME: The "advanced" parameters of WSASocketW (lpProtocolInfo,
      g, dwFlags except WSA_FLAG_OVERLAPPED) are ignored.
   */

   TRACE("af=%d type=%d protocol=%d protocol_info=%p group=%d flags=0x%x\n",
         af, type, protocol, lpProtocolInfo, g, dwFlags );

    /* hack for WSADuplicateSocket */
    if (lpProtocolInfo && lpProtocolInfo->dwServiceFlags4 == 0xff00ff00) {
      ret = lpProtocolInfo->dwCatalogEntryId;
      TRACE("\tgot duplicate %04lx\n", ret);
      return ret;
    }

    /* check and convert the socket family */
    af = convert_af_w2u(af);
    if (af == -1)
    {
      FIXME("Unsupported socket family %d!\n", af);
      SetLastError(WSAEAFNOSUPPORT);
      return INVALID_SOCKET;
    }

    /* check the socket type */
    type = convert_socktype_w2u(type);
    if (type == -1)
    {
      SetLastError(WSAESOCKTNOSUPPORT);
      return INVALID_SOCKET;
    }

    /* check the protocol type */
    if ( protocol < 0 )  /* don't support negative values */
    {
        SetLastError(WSAEPROTONOSUPPORT);
        return INVALID_SOCKET;
    }

    if ( af == AF_UNSPEC)  /* did they not specify the address family? */
        switch(protocol)
	{
          case IPPROTO_TCP:
             if (type == SOCK_STREAM) { af = AF_INET; break; }
          case IPPROTO_UDP:
             if (type == SOCK_DGRAM)  { af = AF_INET; break; }
          default: SetLastError(WSAEPROTOTYPE); return INVALID_SOCKET;
        }

    SERVER_START_REQ( create_socket )
    {
        req->family     = af;
        req->type       = type;
        req->protocol   = protocol;
        req->access     = GENERIC_READ|GENERIC_WRITE|SYNCHRONIZE;
        req->attributes = OBJ_INHERIT;
        req->flags      = dwFlags;
        set_error( wine_server_call( req ) );
        ret = HANDLE2SOCKET( reply->handle );
    }
    SERVER_END_REQ;
    if (ret)
    {
        TRACE("\tcreated %04lx\n", ret );
        return ret;
    }

    if (GetLastError() == WSAEACCES) /* raw socket denied */
    {
        if (type == SOCK_RAW)
            MESSAGE("WARNING: Trying to create a socket of type SOCK_RAW, this"
                    " will fail unless you have special permissions.\n");
        else
            MESSAGE("WS_SOCKET: Failed to create socket, this requires"
                    " special permissions.\n");
        SetLastError(WSAESOCKTNOSUPPORT);
    }

    WARN("\t\tfailed!\n");
    return INVALID_SOCKET;
}

/***********************************************************************
 *      WSAJoinLeaf          (WS2_32.58)
 *
 */
SOCKET WINAPI WSAJoinLeaf(
        SOCKET s,
        const struct WS_sockaddr *addr,
        int addrlen,
        LPWSABUF lpCallerData,
        LPWSABUF lpCalleeData,
        LPQOS lpSQOS,
        LPQOS lpGQOS,
        DWORD dwFlags)
{
    FIXME("stub.\n");
    return INVALID_SOCKET;
}

/***********************************************************************
 *      __WSAFDIsSet			(WS2_32.151)
 */
int WINAPI __WSAFDIsSet(SOCKET s, WS_fd_set *set)
{
  int i = set->fd_count;

  TRACE("(%ld,%p(%i))\n", s, set, i);

  while (i--)
      if (set->fd_array[i] == s) return 1;
  return 0;
}

/***********************************************************************
 *      WSAIsBlocking			(WINSOCK.114)
 *      WSAIsBlocking			(WS2_32.114)
 */
BOOL WINAPI WSAIsBlocking(void)
{
  /* By default WinSock should set all its sockets to non-blocking mode
   * and poll in PeekMessage loop when processing "blocking" ones. This
   * function is supposed to tell if the program is in this loop. Our
   * blocking calls are truly blocking so we always return FALSE.
   *
   * Note: It is allowed to call this function without prior WSAStartup().
   */

  TRACE("\n");
  return FALSE;
}

/***********************************************************************
 *      WSACancelBlockingCall		(WINSOCK.113)
 *      WSACancelBlockingCall		(WS2_32.113)
 */
INT WINAPI WSACancelBlockingCall(void)
{
    TRACE("\n");
    return 0;
}

static INT WINAPI WSA_DefaultBlockingHook( FARPROC x )
{
    FIXME("How was this called?\n");
    return x();
}


/***********************************************************************
 *      WSASetBlockingHook (WS2_32.109)
 */
FARPROC WINAPI WSASetBlockingHook(FARPROC lpBlockFunc)
{
  FARPROC prev = blocking_hook;
  blocking_hook = lpBlockFunc;
  TRACE("hook %p\n", lpBlockFunc);
  return prev;
}


/***********************************************************************
 *      WSAUnhookBlockingHook (WS2_32.110)
 */
INT WINAPI WSAUnhookBlockingHook(void)
{
    blocking_hook = (FARPROC)WSA_DefaultBlockingHook;
    return 0;
}


/* ----------------------------------- end of API stuff */

/* ----------------------------------- helper functions -
 *
 * TODO: Merge WS_dup_..() stuff into one function that
 * would operate with a generic structure containing internal
 * pointers (via a template of some kind).
 */

static int list_size(char** l, int item_size)
{
  int i,j = 0;
  if(l)
  { for(i=0;l[i];i++)
	j += (item_size) ? item_size : strlen(l[i]) + 1;
    j += (i + 1) * sizeof(char*); }
  return j;
}

static int list_dup(char** l_src, char** l_to, int item_size)
{
   char *p;
   int i;

   for (i = 0; l_src[i]; i++) ;
   p = (char *)(l_to + i + 1);
   for (i = 0; l_src[i]; i++)
   {
       int count = ( item_size ) ? item_size : strlen(l_src[i]) + 1;
       memcpy(p, l_src[i], count);
       l_to[i] = p;
       p += count;
   }
   l_to[i] = NULL;
   return p - (char *)l_to;
}

/* ----- hostent */

/* duplicate hostent entry
 * and handle all Win16/Win32 dependent things (struct size, ...) *correctly*.
 * Ditto for protoent and servent.
 */
static struct WS_hostent *WS_dup_he(const struct hostent* p_he)
{
    char *p;
    struct WS_hostent *p_to;

    int size = (sizeof(*p_he) +
                strlen(p_he->h_name) + 1 +
                list_size(p_he->h_aliases, 0) +
                list_size(p_he->h_addr_list, p_he->h_length));

    if (!(p_to = check_buffer_he(size))) return NULL;
    p_to->h_addrtype = p_he->h_addrtype;
    p_to->h_length = p_he->h_length;

    p = (char *)(p_to + 1);
    p_to->h_name = p;
    strcpy(p, p_he->h_name);
    p += strlen(p) + 1;

    p_to->h_aliases = (char **)p;
    p += list_dup(p_he->h_aliases, p_to->h_aliases, 0);

    p_to->h_addr_list = (char **)p;
    list_dup(p_he->h_addr_list, p_to->h_addr_list, p_he->h_length);
    return p_to;
}

/* ----- protoent */

static struct WS_protoent *WS_dup_pe(const struct protoent* p_pe)
{
    char *p;
    struct WS_protoent *p_to;

    int size = (sizeof(*p_pe) +
                strlen(p_pe->p_name) + 1 +
                list_size(p_pe->p_aliases, 0));

    if (!(p_to = check_buffer_pe(size))) return NULL;
    p_to->p_proto = p_pe->p_proto;

    p = (char *)(p_to + 1);
    p_to->p_name = p;
    strcpy(p, p_pe->p_name);
    p += strlen(p) + 1;

    p_to->p_aliases = (char **)p;
    list_dup(p_pe->p_aliases, p_to->p_aliases, 0);
    return p_to;
}

/* ----- servent */

static struct WS_servent *WS_dup_se(const struct servent* p_se)
{
    char *p;
    struct WS_servent *p_to;

    int size = (sizeof(*p_se) +
                strlen(p_se->s_proto) + 1 +
                strlen(p_se->s_name) + 1 +
                list_size(p_se->s_aliases, 0));

    if (!(p_to = check_buffer_se(size))) return NULL;
    p_to->s_port = p_se->s_port;

    p = (char *)(p_to + 1);
    p_to->s_name = p;
    strcpy(p, p_se->s_name);
    p += strlen(p) + 1;

    p_to->s_proto = p;
    strcpy(p, p_se->s_proto);
    p += strlen(p) + 1;

    p_to->s_aliases = (char **)p;
    list_dup(p_se->s_aliases, p_to->s_aliases, 0);
    return p_to;
}

/* ----------------------------------- error handling */

UINT wsaErrno(void)
{
    int	loc_errno = errno;
    WARN("errno %d, (%s).\n", loc_errno, strerror(loc_errno));

    switch(loc_errno)
    {
	case EINTR:		return WSAEINTR;
	case EBADF:		return WSAEBADF;
	case EPERM:
	case EACCES:		return WSAEACCES;
	case EFAULT:		return WSAEFAULT;
	case EINVAL:		return WSAEINVAL;
	case EMFILE:		return WSAEMFILE;
	case EWOULDBLOCK:	return WSAEWOULDBLOCK;
	case EINPROGRESS:	return WSAEINPROGRESS;
	case EALREADY:		return WSAEALREADY;
	case ENOTSOCK:		return WSAENOTSOCK;
	case EDESTADDRREQ:	return WSAEDESTADDRREQ;
	case EMSGSIZE:		return WSAEMSGSIZE;
	case EPROTOTYPE:	return WSAEPROTOTYPE;
	case ENOPROTOOPT:	return WSAENOPROTOOPT;
	case EPROTONOSUPPORT:	return WSAEPROTONOSUPPORT;
	case ESOCKTNOSUPPORT:	return WSAESOCKTNOSUPPORT;
	case EOPNOTSUPP:	return WSAEOPNOTSUPP;
	case EPFNOSUPPORT:	return WSAEPFNOSUPPORT;
	case EAFNOSUPPORT:	return WSAEAFNOSUPPORT;
	case EADDRINUSE:	return WSAEADDRINUSE;
	case EADDRNOTAVAIL:	return WSAEADDRNOTAVAIL;
	case ENETDOWN:		return WSAENETDOWN;
	case ENETUNREACH:	return WSAENETUNREACH;
	case ENETRESET:		return WSAENETRESET;
	case ECONNABORTED:	return WSAECONNABORTED;
	case EPIPE:
	case ECONNRESET:	return WSAECONNRESET;
	case ENOBUFS:		return WSAENOBUFS;
	case EISCONN:		return WSAEISCONN;
	case ENOTCONN:		return WSAENOTCONN;
	case ESHUTDOWN:		return WSAESHUTDOWN;
	case ETOOMANYREFS:	return WSAETOOMANYREFS;
	case ETIMEDOUT:		return WSAETIMEDOUT;
	case ECONNREFUSED:	return WSAECONNREFUSED;
	case ELOOP:		return WSAELOOP;
	case ENAMETOOLONG:	return WSAENAMETOOLONG;
	case EHOSTDOWN:		return WSAEHOSTDOWN;
	case EHOSTUNREACH:	return WSAEHOSTUNREACH;
	case ENOTEMPTY:		return WSAENOTEMPTY;
#ifdef EPROCLIM
	case EPROCLIM:		return WSAEPROCLIM;
#endif
#ifdef EUSERS
	case EUSERS:		return WSAEUSERS;
#endif
#ifdef EDQUOT
	case EDQUOT:		return WSAEDQUOT;
#endif
#ifdef ESTALE
	case ESTALE:		return WSAESTALE;
#endif
#ifdef EREMOTE
	case EREMOTE:		return WSAEREMOTE;
#endif

       /* just in case we ever get here and there are no problems */
	case 0:			return 0;
        default:
		WARN("Unknown errno %d!\n", loc_errno);
		return WSAEOPNOTSUPP;
    }
}

UINT wsaHerrno(int loc_errno)
{

    WARN("h_errno %d.\n", loc_errno);

    switch(loc_errno)
    {
	case HOST_NOT_FOUND:	return WSAHOST_NOT_FOUND;
	case TRY_AGAIN:		return WSATRY_AGAIN;
	case NO_RECOVERY:	return WSANO_RECOVERY;
	case NO_DATA:		return WSANO_DATA;
	case ENOBUFS:		return WSAENOBUFS;

	case 0:			return 0;
        default:
		WARN("Unknown h_errno %d!\n", loc_errno);
		return WSAEOPNOTSUPP;
    }
}


/***********************************************************************
 *		WSARecv			(WS2_32.67)
 */
int WINAPI WSARecv(SOCKET s, LPWSABUF lpBuffers, DWORD dwBufferCount,
                   LPDWORD NumberOfBytesReceived, LPDWORD lpFlags,
                   LPWSAOVERLAPPED lpOverlapped,
                   LPWSAOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine)
{
    return WSARecvFrom(s, lpBuffers, dwBufferCount, NumberOfBytesReceived, lpFlags,
                       NULL, NULL, lpOverlapped, lpCompletionRoutine);
}

/***********************************************************************
 *              WSARecvFrom             (WS2_32.69)
 */
INT WINAPI WSARecvFrom( SOCKET s, LPWSABUF lpBuffers, DWORD dwBufferCount,
                        LPDWORD lpNumberOfBytesRecvd, LPDWORD lpFlags, struct WS_sockaddr *lpFrom,
                        LPINT lpFromlen, LPWSAOVERLAPPED lpOverlapped,
                        LPWSAOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine )

{
    unsigned int i, options;
    int n, fd, err;
    DWORD timeout_start = GetTickCount();
    struct iovec iovec[WS_MSG_MAXIOVLEN];
    ULONG_PTR cvalue = (lpOverlapped && ((ULONG_PTR)lpOverlapped->hEvent & 1) == 0) ? (ULONG_PTR)lpOverlapped : 0;

    TRACE("socket %04lx, wsabuf %p, nbufs %d, flags %d, from %p, fromlen %d, ovl %p, func %p\n",
          s, lpBuffers, dwBufferCount, *lpFlags, lpFrom,
          (lpFromlen ? *lpFromlen : -1),
          lpOverlapped, lpCompletionRoutine);

    if (dwBufferCount > WS_MSG_MAXIOVLEN)
    {
        WSASetLastError( WSAEINVAL );
        return SOCKET_ERROR;
    }

    fd = get_sock_fd( s, FILE_READ_DATA, &options );
    TRACE( "fd=%d, options=%x\n", fd, options );

    if (fd == -1) return SOCKET_ERROR;

    for (i = 0; i < dwBufferCount; i++)
    {
        iovec[i].iov_base = lpBuffers[i].buf;
        iovec[i].iov_len  = lpBuffers[i].len;
    }

    for (;;)
    {
        n = WS2_recv( fd, iovec, dwBufferCount, lpFrom, lpFromlen, lpFlags );
        if (n == -1)
        {
            if (errno == EINTR) continue;
            if (errno != EAGAIN)
            {
                err = wsaErrno();
                if (cvalue) WS_AddCompletion( s, cvalue, err, 0 );
                goto error;
            }
        }
        else
            *lpNumberOfBytesRecvd = n;

        if ((lpOverlapped || lpCompletionRoutine) &&
             !(options & (FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT)))
        {
            IO_STATUS_BLOCK *iosb;
            struct ws2_async *wsa = HeapAlloc( GetProcessHeap(), 0, sizeof(*wsa) );

            if ( !wsa )
            {
                err = WSAEFAULT;
                goto error;
            }
            release_sock_fd( s, fd );

            wsa->hSocket         = SOCKET2HANDLE(s);
            wsa->flags           = *lpFlags;
            wsa->addr            = lpFrom;
            wsa->addrlen.ptr     = lpFromlen;
            wsa->user_overlapped = lpOverlapped;
            wsa->completion_func = lpCompletionRoutine;
            wsa->n_iovecs        = dwBufferCount;
            memcpy( wsa->iovec, iovec, dwBufferCount * sizeof(*iovec) );

            iosb = lpOverlapped ? (IO_STATUS_BLOCK *)lpOverlapped : &wsa->local_iosb;

            if (n == -1)
            {
                iosb->u.Status = STATUS_PENDING;
                iosb->Information = 0;

                SERVER_START_REQ( register_async )
                {
                    req->handle = wsa->hSocket;
                    req->type   = ASYNC_TYPE_READ;
                    req->async.callback = WS2_async_recv;
                    req->async.iosb     = iosb;
                    req->async.arg      = wsa;
                    req->async.apc      = ws2_async_apc;
                    req->async.event    = lpCompletionRoutine ? 0 : lpOverlapped->hEvent;
                    req->async.cvalue   = cvalue;
                    err = wine_server_call( req );
                }
                SERVER_END_REQ;

                if (err != STATUS_PENDING) HeapFree( GetProcessHeap(), 0, wsa );
                WSASetLastError( NtStatusToWSAError( err ));
                return SOCKET_ERROR;
            }

            iosb->u.Status = STATUS_SUCCESS;
            iosb->Information = n;
            if (!wsa->completion_func)
            {
                if (cvalue) WS_AddCompletion( s, cvalue, STATUS_SUCCESS, n );
                SetEvent( lpOverlapped->hEvent );
                HeapFree( GetProcessHeap(), 0, wsa );
            }
            else NtQueueApcThread( GetCurrentThread(), (PNTAPCFUNC)ws2_async_apc,
                                   (ULONG_PTR)wsa, (ULONG_PTR)iosb, 0 );
            _enable_event(SOCKET2HANDLE(s), FD_READ, 0, 0);
            return 0;
        }

        if (n != -1) break;

        if ( _is_blocking(s) )
        {
            struct pollfd pfd;
            int timeout = GET_RCVTIMEO(fd);
            if (timeout != -1)
            {
                timeout -= GetTickCount() - timeout_start;
                if (timeout < 0) timeout = 0;
            }

            pfd.fd = fd;
            pfd.events = POLLIN;
            if (*lpFlags & WS_MSG_OOB) pfd.events |= POLLPRI;

            if (!timeout || !poll( &pfd, 1, timeout ))
            {
                err = WSAETIMEDOUT;
                /* a timeout is not fatal */
                _enable_event(SOCKET2HANDLE(s), FD_READ, 0, 0);
                goto error;
            }
        }
        else
        {
            _enable_event(SOCKET2HANDLE(s), FD_READ, 0, 0);
            err = WSAEWOULDBLOCK;
            goto error;
        }
    }

    TRACE(" -> %i bytes\n", n);
    release_sock_fd( s, fd );
    _enable_event(SOCKET2HANDLE(s), FD_READ, 0, 0);

    return 0;

error:
    release_sock_fd( s, fd );
    WARN(" -> ERROR %d\n", err);
    WSASetLastError( err );
    return SOCKET_ERROR;
}

/***********************************************************************
 *              WSCInstallProvider             (WS2_32.88)
 */
INT WINAPI WSCInstallProvider( const LPGUID lpProviderId,
                               LPCWSTR lpszProviderDllPath,
                               const LPWSAPROTOCOL_INFOW lpProtocolInfoList,
                               DWORD dwNumberOfEntries,
                               LPINT lpErrno )
{
    FIXME("(%s, %s, %p, %d, %p): stub !\n", debugstr_guid(lpProviderId),
          debugstr_w(lpszProviderDllPath), lpProtocolInfoList,
          dwNumberOfEntries, lpErrno);
    *lpErrno = 0;
    return 0;
}


/***********************************************************************
 *              WSCDeinstallProvider             (WS2_32.83)
 */
INT WINAPI WSCDeinstallProvider(LPGUID lpProviderId, LPINT lpErrno)
{
    FIXME("(%s, %p): stub !\n", debugstr_guid(lpProviderId), lpErrno);
    *lpErrno = 0;
    return 0;
}


/***********************************************************************
 *              WSAAccept                        (WS2_32.26)
 */
SOCKET WINAPI WSAAccept( SOCKET s, struct WS_sockaddr *addr, LPINT addrlen,
               LPCONDITIONPROC lpfnCondition, DWORD dwCallbackData)
{

       int ret = 0, size = 0;
       WSABUF CallerId, CallerData, CalleeId, CalleeData;
       /*        QOS SQOS, GQOS; */
       GROUP g;
       SOCKET cs;
       SOCKADDR src_addr, dst_addr;

       TRACE("Socket %04lx, sockaddr %p, addrlen %p, fnCondition %p, dwCallbackData %d\n",
               s, addr, addrlen, lpfnCondition, dwCallbackData);


       size = sizeof(src_addr);
       cs = WS_accept(s, &src_addr, &size);

       if (cs == SOCKET_ERROR) return SOCKET_ERROR;

       CallerId.buf = (char *)&src_addr;
       CallerId.len = sizeof(src_addr);

       CallerData.buf = NULL;
       CallerData.len = (ULONG)NULL;

       WS_getsockname(cs, &dst_addr, &size);

       CalleeId.buf = (char *)&dst_addr;
       CalleeId.len = sizeof(dst_addr);


       ret = (*lpfnCondition)(&CallerId, &CallerData, NULL, NULL,
                       &CalleeId, &CalleeData, &g, dwCallbackData);

       switch (ret)
       {
               case CF_ACCEPT:
                       if (addr && addrlen)
                               addr = memcpy(addr, &src_addr, (*addrlen > size) ?  size : *addrlen );
                       return cs;
               case CF_DEFER:
                       SERVER_START_REQ( set_socket_deferred )
                       {
                           req->handle = SOCKET2HANDLE(s);
                           req->deferred = SOCKET2HANDLE(cs);
                           if ( !wine_server_call_err ( req ) )
                           {
                               SetLastError( WSATRY_AGAIN );
                               WS_closesocket( cs );
                           }
                       }
                       SERVER_END_REQ;
                       return SOCKET_ERROR;
               case CF_REJECT:
                       WS_closesocket(cs);
                       SetLastError(WSAECONNREFUSED);
                       return SOCKET_ERROR;
               default:
                       FIXME("Unknown return type from Condition function\n");
                       SetLastError(WSAENOTSOCK);
                       return SOCKET_ERROR;
               }
}

/***********************************************************************
 *              WSADuplicateSocketA                      (WS2_32.32)
 */
int WINAPI WSADuplicateSocketA( SOCKET s, DWORD dwProcessId, LPWSAPROTOCOL_INFOA lpProtocolInfo )
{
   HANDLE hProcess;

   TRACE("(%ld,%x,%p)\n", s, dwProcessId, lpProtocolInfo);
   memset(lpProtocolInfo, 0, sizeof(*lpProtocolInfo));
   /* FIXME: WS_getsockopt(s, WS_SOL_SOCKET, SO_PROTOCOL_INFO, lpProtocolInfo, sizeof(*lpProtocolInfo)); */
   /* I don't know what the real Windoze does next, this is a hack */
   /* ...we could duplicate and then use ConvertToGlobalHandle on the duplicate, then let
    * the target use the global duplicate, or we could copy a reference to us to the structure
    * and let the target duplicate it from us, but let's do it as simple as possible */
   hProcess = OpenProcess(PROCESS_DUP_HANDLE, FALSE, dwProcessId);
   DuplicateHandle(GetCurrentProcess(), SOCKET2HANDLE(s),
                   hProcess, (LPHANDLE)&lpProtocolInfo->dwCatalogEntryId,
                   0, FALSE, DUPLICATE_SAME_ACCESS);
   CloseHandle(hProcess);
   lpProtocolInfo->dwServiceFlags4 = 0xff00ff00; /* magic */
   return 0;
}

/***********************************************************************
 *              WSADuplicateSocketW                      (WS2_32.33)
 */
int WINAPI WSADuplicateSocketW( SOCKET s, DWORD dwProcessId, LPWSAPROTOCOL_INFOW lpProtocolInfo )
{
   HANDLE hProcess;

   TRACE("(%ld,%x,%p)\n", s, dwProcessId, lpProtocolInfo);

   memset(lpProtocolInfo, 0, sizeof(*lpProtocolInfo));
   hProcess = OpenProcess(PROCESS_DUP_HANDLE, FALSE, dwProcessId);
   DuplicateHandle(GetCurrentProcess(), SOCKET2HANDLE(s),
                   hProcess, (LPHANDLE)&lpProtocolInfo->dwCatalogEntryId,
                   0, FALSE, DUPLICATE_SAME_ACCESS);
   CloseHandle(hProcess);
   lpProtocolInfo->dwServiceFlags4 = 0xff00ff00; /* magic */
   return 0;
}

/***********************************************************************
 *              WSAInstallServiceClassA                  (WS2_32.48)
 */
int WINAPI WSAInstallServiceClassA(LPWSASERVICECLASSINFOA info)
{
    FIXME("Request to install service %s\n",debugstr_a(info->lpszServiceClassName));
    WSASetLastError(WSAEACCES);
    return SOCKET_ERROR;
}

/***********************************************************************
 *              WSAInstallServiceClassW                  (WS2_32.49)
 */
int WINAPI WSAInstallServiceClassW(LPWSASERVICECLASSINFOW info)
{
    FIXME("Request to install service %s\n",debugstr_w(info->lpszServiceClassName));
    WSASetLastError(WSAEACCES);
    return SOCKET_ERROR;
}

/***********************************************************************
 *              WSARemoveServiceClass                    (WS2_32.70)
 */
int WINAPI WSARemoveServiceClass(LPGUID info)
{
    FIXME("Request to remove service %p\n",info);
    WSASetLastError(WSATYPE_NOT_FOUND);
    return SOCKET_ERROR;
}

/***********************************************************************
 *              WSAStringToAddressA                      (WS2_32.80)
 */
INT WINAPI WSAStringToAddressA(LPSTR AddressString,
                               INT AddressFamily,
                               LPWSAPROTOCOL_INFOA lpProtocolInfo,
                               LPSOCKADDR lpAddress,
                               LPINT lpAddressLength)
{
    INT res=0;
    LPSTR workBuffer=NULL,ptrPort;

    TRACE( "(%s, %x, %p, %p, %p)\n", AddressString, AddressFamily, lpProtocolInfo,
           lpAddress, lpAddressLength );

    if (!lpAddressLength || !lpAddress) return SOCKET_ERROR;

    if (!AddressString)
    {
        WSASetLastError(WSAEINVAL);
        return SOCKET_ERROR;
    }

    if (lpProtocolInfo)
        FIXME("ProtocolInfo not implemented.\n");

    workBuffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
                            strlen(AddressString) + 1);
    if (!workBuffer)
    {
        WSASetLastError(WSA_NOT_ENOUGH_MEMORY);
        return SOCKET_ERROR;
    }

    strcpy(workBuffer, AddressString);

    switch(AddressFamily)
    {
    case WS_AF_INET:
    {
        struct in_addr inetaddr;

        /* If lpAddressLength is too small, tell caller the size we need */
        if (*lpAddressLength < sizeof(SOCKADDR_IN))
        {
            *lpAddressLength = sizeof(SOCKADDR_IN);
            res = WSAEFAULT;
            break;
        }
        memset(lpAddress, 0, sizeof(SOCKADDR_IN));

        ((LPSOCKADDR_IN)lpAddress)->sin_family = AF_INET;

        ptrPort = strchr(workBuffer, ':');
        if(ptrPort)
        {
            ((LPSOCKADDR_IN)lpAddress)->sin_port = (WS_u_short)atoi(ptrPort+1);
            *ptrPort = '\0';
        }
        else
        {
            ((LPSOCKADDR_IN)lpAddress)->sin_port = 0;
        }

        if(inet_aton(workBuffer, &inetaddr) > 0)
        {
            ((LPSOCKADDR_IN)lpAddress)->sin_addr.WS_s_addr = inetaddr.s_addr;
            res = 0;
        }
        else
            res = WSAEINVAL;

        break;

    }
    case WS_AF_INET6:
    {
        struct in6_addr inetaddr;
        /* If lpAddressLength is too small, tell caller the size we need */
        if (*lpAddressLength < sizeof(SOCKADDR_IN6))
        {
            *lpAddressLength = sizeof(SOCKADDR_IN6);
            res = WSAEFAULT;
            break;
        }
#ifdef HAVE_INET_PTON
        memset(lpAddress, 0, sizeof(SOCKADDR_IN6));

        ((LPSOCKADDR_IN6)lpAddress)->sin6_family = WS_AF_INET6;

        /* This one is a bit tricky. An IPv6 address contains colons, so the
         * check from IPv4 doesn't work like that. However, IPv6 addresses that
         * contain a port are written with braces like [fd12:3456:7890::1]:12345
         * so what we will do is to look for ']', check if the next char is a
         * colon, and if it is, parse the port as in IPv4. */

        ptrPort = strchr(workBuffer, ']');
        if(ptrPort && *(++ptrPort) == ':')
        {
            ((LPSOCKADDR_IN6)lpAddress)->sin6_port = (WS_u_short)atoi(ptrPort+1);
            *ptrPort = '\0';
        }
        else
        {
            ((LPSOCKADDR_IN6)lpAddress)->sin6_port = 0;
        }

        if(inet_pton(AF_INET6, workBuffer, &inetaddr) > 0)
        {
            memcpy(&((LPSOCKADDR_IN6)lpAddress)->sin6_addr, &inetaddr,
                    sizeof(struct in6_addr));
            res = 0;
        }
        else
#endif /* HAVE_INET_PTON */
            res = WSAEINVAL;

        break;
    }
    default:
        /* According to MSDN, only AF_INET and AF_INET6 are supported. */
        TRACE("Unsupported address family specified: %d.\n", AddressFamily);
        res = WSAEINVAL;
    }

    HeapFree(GetProcessHeap(), 0, workBuffer);

    if (!res) return 0;
    WSASetLastError(res);
    return SOCKET_ERROR;
}

/***********************************************************************
 *              WSAStringToAddressW                      (WS2_32.81)
 *
 * Does anybody know if this functions allows to use hebrew/arabic/chinese... digits?
 * If this should be the case, it would be required to map these digits
 * to Unicode digits (0-9) using FoldString first.
 */
INT WINAPI WSAStringToAddressW(LPWSTR AddressString,
                               INT AddressFamily,
                               LPWSAPROTOCOL_INFOW lpProtocolInfo,
                               LPSOCKADDR lpAddress,
                               LPINT lpAddressLength)
{
    INT sBuffer,res=0;
    LPSTR workBuffer=NULL;
    WSAPROTOCOL_INFOA infoA;
    LPWSAPROTOCOL_INFOA lpProtoInfoA = NULL;

    TRACE( "(%s, %x, %p, %p, %p)\n", debugstr_w(AddressString), AddressFamily, lpProtocolInfo,
           lpAddress, lpAddressLength );

    if (!lpAddressLength || !lpAddress) return SOCKET_ERROR;

    /* if ProtocolInfo is available - convert to ANSI variant */
    if (lpProtocolInfo)
    {
        lpProtoInfoA = &infoA;
        memcpy( lpProtoInfoA, lpProtocolInfo, FIELD_OFFSET( WSAPROTOCOL_INFOA, szProtocol ) );

        if (!WideCharToMultiByte( CP_ACP, 0, lpProtocolInfo->szProtocol, -1,
                                  lpProtoInfoA->szProtocol, WSAPROTOCOL_LEN+1, NULL, NULL ))
        {
            WSASetLastError( WSAEINVAL);
            return SOCKET_ERROR;
        }
    }

    if (AddressString)
    {
        /* Translate AddressString to ANSI code page - assumes that only
           standard digits 0-9 are used with this API call */
        sBuffer = WideCharToMultiByte( CP_ACP, 0, AddressString, -1, NULL, 0, NULL, NULL );
        workBuffer = HeapAlloc( GetProcessHeap(), 0, sBuffer );

        if (workBuffer)
        {
            WideCharToMultiByte( CP_ACP, 0, AddressString, -1, workBuffer, sBuffer, NULL, NULL );
            res = WSAStringToAddressA(workBuffer,AddressFamily,lpProtoInfoA,
                                      lpAddress,lpAddressLength);
            HeapFree( GetProcessHeap(), 0, workBuffer );
            return res;
        }
        else
            res = WSA_NOT_ENOUGH_MEMORY;
    }
    else
        res = WSAEINVAL;

    WSASetLastError(res);
    return SOCKET_ERROR;
}

/***********************************************************************
 *              WSAAddressToStringA                      (WS2_32.27)
 *
 *  See WSAAddressToStringW
 */
INT WINAPI WSAAddressToStringA( LPSOCKADDR sockaddr, DWORD len,
                                LPWSAPROTOCOL_INFOA info, LPSTR string,
                                LPDWORD lenstr )
{
    INT size;
    CHAR buffer[22]; /* 12 digits + 3 dots + ':' + 5 digits + '\0' */
    CHAR *p;

    TRACE( "(%p, %d, %p, %p, %p)\n", sockaddr, len, info, string, lenstr );

    if (!sockaddr || len < sizeof(SOCKADDR_IN)) return SOCKET_ERROR;
    if (!string || !lenstr) return SOCKET_ERROR;

    /* sin_family is guaranteed to be the first u_short */
    if (((SOCKADDR_IN *)sockaddr)->sin_family != AF_INET) return SOCKET_ERROR;

    sprintf( buffer, "%u.%u.%u.%u:%u",
             (unsigned int)(ntohl( ((SOCKADDR_IN *)sockaddr)->sin_addr.WS_s_addr ) >> 24 & 0xff),
             (unsigned int)(ntohl( ((SOCKADDR_IN *)sockaddr)->sin_addr.WS_s_addr ) >> 16 & 0xff),
             (unsigned int)(ntohl( ((SOCKADDR_IN *)sockaddr)->sin_addr.WS_s_addr ) >> 8 & 0xff),
             (unsigned int)(ntohl( ((SOCKADDR_IN *)sockaddr)->sin_addr.WS_s_addr ) & 0xff),
             ntohs( ((SOCKADDR_IN *)sockaddr)->sin_port ) );

    p = strchr( buffer, ':' );
    if (!((SOCKADDR_IN *)sockaddr)->sin_port) *p = 0;

    size = strlen( buffer );

    if (*lenstr <  size)
    {
        *lenstr = size;
        WSASetLastError(WSAEFAULT);
        return SOCKET_ERROR;
    }

    strcpy( string, buffer );
    return 0;
}

/***********************************************************************
 *              WSAAddressToStringW                      (WS2_32.28)
 *
 * Convert a sockaddr address into a readable address string. 
 *
 * PARAMS
 *  sockaddr [I]    Pointer to a sockaddr structure.
 *  len      [I]    Size of the sockaddr structure.
 *  info     [I]    Pointer to a WSAPROTOCOL_INFOW structure (optional).
 *  string   [I/O]  Pointer to a buffer to receive the address string.
 *  lenstr   [I/O]  Size of the receive buffer in WCHARs.
 *
 * RETURNS
 *  Success: 0
 *  Failure: SOCKET_ERROR
 *
 * NOTES
 *  The 'info' parameter is ignored.
 *
 * BUGS
 *  Only supports AF_INET addresses.
 */
INT WINAPI WSAAddressToStringW( LPSOCKADDR sockaddr, DWORD len,
                                LPWSAPROTOCOL_INFOW info, LPWSTR string,
                                LPDWORD lenstr )
{
    INT size;
    WCHAR buffer[22]; /* 12 digits + 3 dots + ':' + 5 digits + '\0' */
    static const WCHAR format[] = { '%','u','.','%','u','.','%','u','.','%','u',':','%','u',0 };
    WCHAR *p;

    TRACE( "(%p, %x, %p, %p, %p)\n", sockaddr, len, info, string, lenstr );

    if (!sockaddr || len < sizeof(SOCKADDR_IN)) return SOCKET_ERROR;
    if (!string || !lenstr) return SOCKET_ERROR;

    /* sin_family is guaranteed to be the first u_short */
    if (((SOCKADDR_IN *)sockaddr)->sin_family != AF_INET) return SOCKET_ERROR;

    sprintfW( buffer, format,
              (unsigned int)(ntohl( ((SOCKADDR_IN *)sockaddr)->sin_addr.WS_s_addr ) >> 24 & 0xff),
              (unsigned int)(ntohl( ((SOCKADDR_IN *)sockaddr)->sin_addr.WS_s_addr ) >> 16 & 0xff),
              (unsigned int)(ntohl( ((SOCKADDR_IN *)sockaddr)->sin_addr.WS_s_addr ) >> 8 & 0xff),
              (unsigned int)(ntohl( ((SOCKADDR_IN *)sockaddr)->sin_addr.WS_s_addr ) & 0xff),
              ntohs( ((SOCKADDR_IN *)sockaddr)->sin_port ) );

    p = strchrW( buffer, ':' );
    if (!((SOCKADDR_IN *)sockaddr)->sin_port) *p = 0;

    size = lstrlenW( buffer );

    if (*lenstr <  size)
    {
        *lenstr = size;
        return SOCKET_ERROR;
    }

    lstrcpyW( string, buffer );
    return 0;
}

/***********************************************************************
 *              WSAEnumNameSpaceProvidersA                  (WS2_32.34)
 */
INT WINAPI WSAEnumNameSpaceProvidersA( LPDWORD len, LPWSANAMESPACE_INFOA buffer )
{
    FIXME( "(%p %p) Stub!\n", len, buffer );
    return 0;
}

/***********************************************************************
 *              WSAEnumNameSpaceProvidersW                  (WS2_32.35)
 */
INT WINAPI WSAEnumNameSpaceProvidersW( LPDWORD len, LPWSANAMESPACE_INFOW buffer )
{
    FIXME( "(%p %p) Stub!\n", len, buffer );
    return 0;
}

/***********************************************************************
 *              WSAGetQOSByName                             (WS2_32.41)
 */
BOOL WINAPI WSAGetQOSByName( SOCKET s, LPWSABUF lpQOSName, LPQOS lpQOS )
{
    FIXME( "(0x%04lx %p %p) Stub!\n", s, lpQOSName, lpQOS );
    return FALSE;
}

/***********************************************************************
 *              WSAGetServiceClassInfoA                     (WS2_32.42)
 */
INT WINAPI WSAGetServiceClassInfoA( LPGUID provider, LPGUID service, LPDWORD len,
                                    LPWSASERVICECLASSINFOA info )
{
    FIXME( "(%s %s %p %p) Stub!\n", debugstr_guid(provider), debugstr_guid(service),
           len, info );
    WSASetLastError(WSA_NOT_ENOUGH_MEMORY);
    return SOCKET_ERROR; 
}

/***********************************************************************
 *              WSAGetServiceClassInfoW                     (WS2_32.43)
 */
INT WINAPI WSAGetServiceClassInfoW( LPGUID provider, LPGUID service, LPDWORD len,
                                    LPWSASERVICECLASSINFOW info )
{
    FIXME( "(%s %s %p %p) Stub!\n", debugstr_guid(provider), debugstr_guid(service),
           len, info );
    WSASetLastError(WSA_NOT_ENOUGH_MEMORY);
    return SOCKET_ERROR;
}

/***********************************************************************
 *              WSAGetServiceClassNameByClassIdA            (WS2_32.44)
 */
INT WINAPI WSAGetServiceClassNameByClassIdA( LPGUID class, LPSTR service, LPDWORD len )
{
    FIXME( "(%s %p %p) Stub!\n", debugstr_guid(class), service, len );
    WSASetLastError(WSA_NOT_ENOUGH_MEMORY);
    return SOCKET_ERROR;
}

/***********************************************************************
 *              WSAGetServiceClassNameByClassIdW            (WS2_32.45)
 */
INT WINAPI WSAGetServiceClassNameByClassIdW( LPGUID class, LPWSTR service, LPDWORD len )
{
    FIXME( "(%s %p %p) Stub!\n", debugstr_guid(class), service, len );
    WSASetLastError(WSA_NOT_ENOUGH_MEMORY);
    return SOCKET_ERROR;
}

/***********************************************************************
 *              WSALookupServiceBeginA                       (WS2_32.59)
 */
INT WINAPI WSALookupServiceBeginA( LPWSAQUERYSETA lpqsRestrictions,
                                   DWORD dwControlFlags,
                                   LPHANDLE lphLookup)
{
    FIXME("(%p 0x%08x %p) Stub!\n", lpqsRestrictions, dwControlFlags,
            lphLookup);
    WSASetLastError(WSA_NOT_ENOUGH_MEMORY);
    return SOCKET_ERROR;
}

/***********************************************************************
 *              WSALookupServiceBeginW                       (WS2_32.60)
 */
INT WINAPI WSALookupServiceBeginW( LPWSAQUERYSETW lpqsRestrictions,
                                   DWORD dwControlFlags,
                                   LPHANDLE lphLookup)
{
    FIXME("(%p 0x%08x %p) Stub!\n", lpqsRestrictions, dwControlFlags,
            lphLookup);
    WSASetLastError(WSA_NOT_ENOUGH_MEMORY);
    return SOCKET_ERROR;
}

/***********************************************************************
 *              WSALookupServiceBeginW                       (WS2_32.61)
 */
INT WINAPI WSALookupServiceEnd( HANDLE lookup )
{
    FIXME("(%p) Stub!\n", lookup );
    return 0;
}

/***********************************************************************
 *              WSALookupServiceNextA                       (WS2_32.62)
 */
INT WINAPI WSALookupServiceNextA( HANDLE lookup, DWORD flags, LPDWORD len, LPWSAQUERYSETA results )
{
    FIXME( "(%p 0x%08x %p %p) Stub!\n", lookup, flags, len, results );
    return 0;
}

/***********************************************************************
 *              WSALookupServiceNextW                       (WS2_32.63)
 */
INT WINAPI WSALookupServiceNextW( HANDLE lookup, DWORD flags, LPDWORD len, LPWSAQUERYSETW results )
{
    FIXME( "(%p 0x%08x %p %p) Stub!\n", lookup, flags, len, results );
    return 0;
}

/***********************************************************************
 *              WSANtohl                                   (WS2_32.64)
 */
INT WINAPI WSANtohl( SOCKET s, WS_u_long netlong, WS_u_long* lphostlong )
{
    TRACE( "(0x%04lx 0x%08x %p)\n", s, netlong, lphostlong );

    if (!lphostlong) return WSAEFAULT;

    *lphostlong = ntohl( netlong );
    return 0;
}

/***********************************************************************
 *              WSANtohs                                   (WS2_32.65)
 */
INT WINAPI WSANtohs( SOCKET s, WS_u_short netshort, WS_u_short* lphostshort )
{
    TRACE( "(0x%04lx 0x%08x %p)\n", s, netshort, lphostshort );

    if (!lphostshort) return WSAEFAULT;

    *lphostshort = ntohs( netshort );
    return 0;
}

/***********************************************************************
 *              WSAProviderConfigChange                     (WS2_32.66)
 */
INT WINAPI WSAProviderConfigChange( LPHANDLE handle, LPWSAOVERLAPPED overlapped,
                                    LPWSAOVERLAPPED_COMPLETION_ROUTINE completion )
{
    FIXME( "(%p %p %p) Stub!\n", handle, overlapped, completion );
    return SOCKET_ERROR;
}

/***********************************************************************
 *              WSARecvDisconnect                           (WS2_32.68)
 */
INT WINAPI WSARecvDisconnect( SOCKET s, LPWSABUF disconnectdata )
{
    TRACE( "(0x%04lx %p)\n", s, disconnectdata );

    return WS_shutdown( s, 0 );
}

/***********************************************************************
 *              WSASetServiceA                              (WS2_32.76)
 */
INT WINAPI WSASetServiceA( LPWSAQUERYSETA query, WSAESETSERVICEOP operation, DWORD flags )
{
    FIXME( "(%p 0x%08x 0x%08x) Stub!\n", query, operation, flags );
    return 0;
}

/***********************************************************************
 *              WSASetServiceW                              (WS2_32.77)
 */
INT WINAPI WSASetServiceW( LPWSAQUERYSETW query, WSAESETSERVICEOP operation, DWORD flags )
{
    FIXME( "(%p 0x%08x 0x%08x) Stub!\n", query, operation, flags );
    return 0;
}

/***********************************************************************
 *              WSCEnableNSProvider                         (WS2_32.84)
 */
INT WINAPI WSCEnableNSProvider( LPGUID provider, BOOL enable )
{
    FIXME( "(%s 0x%08x) Stub!\n", debugstr_guid(provider), enable );
    return 0;
}

/***********************************************************************
 *              WSCGetProviderPath                          (WS2_32.86)
 */
INT WINAPI WSCGetProviderPath( LPGUID provider, LPWSTR path, LPINT len, LPINT errcode )
{
    FIXME( "(%s %p %p %p) Stub!\n", debugstr_guid(provider), path, len, errcode );

    if (!errcode || !provider || !len) return WSAEFAULT;

    *errcode = WSAEINVAL;
    return SOCKET_ERROR;
}

/***********************************************************************
 *              WSCInstallNameSpace                         (WS2_32.87)
 */
INT WINAPI WSCInstallNameSpace( LPWSTR identifier, LPWSTR path, DWORD namespace,
                                DWORD version, LPGUID provider )
{
    FIXME( "(%s %s 0x%08x 0x%08x %s) Stub!\n", debugstr_w(identifier), debugstr_w(path),
           namespace, version, debugstr_guid(provider) );
    return 0;
}

/***********************************************************************
 *              WSCUnInstallNameSpace                       (WS2_32.89)
 */
INT WINAPI WSCUnInstallNameSpace( LPGUID lpProviderId )
{
    FIXME("(%p) Stub!\n", lpProviderId);
    return NO_ERROR;
}

/***********************************************************************
 *              WSCWriteProviderOrder                       (WS2_32.91)
 */
INT WINAPI WSCWriteProviderOrder( LPDWORD entry, DWORD number )
{
    FIXME("(%p 0x%08x) Stub!\n", entry, number);
    return 0;
}