/*
 *  libsocket - BSD socket like library for DJGPP
 *  Copyright 1997, 1998 by Indrek Mandre
 *  Copyright 1997-2000 by Richard Dawe
 *
 *  Portions of libsocket Copyright 1985-1993 Regents of the University of
 *  California.
 *  Portions of libsocket Copyright 1991, 1992 Free Software Foundation, Inc.
 *  Portions of libsocket Copyright 1997, 1998 by the Regdos Group.
 *
 *  This library is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU Library General Public License as published
 *  by the Free Software Foundation; either version 2 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
 *  Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <sys/socket.h>

#include <lsck/lsck.h>
#include <lsck/if.h>

/* ---------------
 * - getpeername -
 * --------------- */

int getpeername (int s, struct sockaddr *name, socklen_t *namelen)
{
    LSCK_SOCKET *lsd;
    int ret = -1;		/* Fail by default */

    /* Find the socket descriptor */
    lsd = __fd_to_lsd (s);

    if (lsd == NULL) {
	isfdtype(s, S_IFSOCK);
	return (-1);
    }

    /* Check for completion of outstanding non-blocking I/O */
    if (lsd->interface->nonblocking_check != NULL)
	lsd->interface->nonblocking_check (lsd);

    /* Not connected? Only checking this for connection oriented sockets. */
    if ((lsd->type == SOCK_STREAM) && !lsd->connected) {
	errno = ENOTCONN;
	return (-1);
    }

    /* Check the address params */
    if ( (name == NULL) || (namelen == NULL) ) {
	errno = EFAULT;
	return(-1);
    }

    /* Use appropriate interface */
    if (lsd->interface->getpeername == NULL) {
	errno = EOPNOTSUPP;
	return (-1);
    }
    ret = lsd->interface->getpeername (lsd, name, namelen);
    return (ret);
}
