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/*

 * Copyright 1996 Massachusetts Institute of Technology

 *

 * Permission to use, copy, modify, and distribute this software and

 * its documentation for any purpose and without fee is hereby

 * granted, provided that both the above copyright notice and this

 * permission notice appear in all copies, that both the above

 * copyright notice and this permission notice appear in all

 * supporting documentation, and that the name of M.I.T. not be used

 * in advertising or publicity pertaining to distribution of the

 * software without specific, written prior permission.  M.I.T. makes

 * no representations about the suitability of this software for any

 * purpose.  It is provided "as is" without express or implied

 * warranty.

 *

 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''.  M.I.T. DISCLAIMS

 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,

 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT

 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,

 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT

 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 *      $ANA: ascii2addr.c,v 1.2 1996/06/13 18:46:02 wollman Exp $

 *

 *  $Id: ascii2addr.c,v 1.2 2001-09-27 12:01:53 chris Exp $

 */

#include <sys/types.h>

#include <sys/socket.h>

#include <errno.h>

#include <string.h>

#include <net/if_dl.h>

#include <netinet/in.h>

#include <arpa/inet.h>

int

ascii2addr(af, ascii, result)

        int af;

        const char *ascii;

        void *result;

{

        struct in_addr *ina;

        char strbuf[4*sizeof("123")]; /* long enough for V4 only */

        switch(af) {

        case AF_INET:

                ina = result;

                strbuf[0] = '\0';

                strncat(strbuf, ascii, (sizeof strbuf)-1);

                if (inet_aton(strbuf, ina))

                        return sizeof(struct in_addr);

                errno = EINVAL;

                break;

        case AF_LINK:

                link_addr(ascii, result);

                /* oops... no way to detect failure */

                return sizeof(struct sockaddr_dl);

        default:

                errno = EPROTONOSUPPORT;

                break;

        }

        return -1;

}