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- /* $Id: ethers.c,v 1.1 2000/04/08 20:50:28 dugsong Exp $ */
- /* $OpenBSD: ethers.c,v 1.10 1998/11/18 23:28:54 deraadt Exp $ */
-
- /*
- * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
- * THE AUTHOR 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.
- */
-
- /*
- * ethers(3) a la Sun.
- * Originally Written by Roland McGrath <roland@frob.com> 10/14/93.
- * Substantially modified by Todd C. Miller <Todd.Miller@courtesan.com>
- */
-
- #include <sys/types.h>
- #include <sys/socket.h>
- #include <net/if.h>
- #include <netinet/in.h>
- #include <netinet/if_ether.h>
- #include <errno.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <ctype.h>
-
- char *
- ether_ntoa(e)
- struct ether_addr *e;
- {
- static char a[] = "xx:xx:xx:xx:xx:xx";
-
- if (e->ether_addr_octet[0] > 0xFF || e->ether_addr_octet[1] > 0xFF ||
- e->ether_addr_octet[2] > 0xFF || e->ether_addr_octet[3] > 0xFF ||
- e->ether_addr_octet[4] > 0xFF || e->ether_addr_octet[5] > 0xFF) {
- errno = EINVAL;
- return (NULL);
- }
-
- (void)sprintf(a, "%02x:%02x:%02x:%02x:%02x:%02x",
- e->ether_addr_octet[0], e->ether_addr_octet[1],
- e->ether_addr_octet[2], e->ether_addr_octet[3],
- e->ether_addr_octet[4], e->ether_addr_octet[5]);
-
- return (a);
- }
-
- static char *
- _ether_aton(s, e)
- char *s;
- struct ether_addr *e;
- {
- int i;
- long l;
- char *pp;
-
- while (isspace(*s))
- s++;
-
- /* expect 6 hex octets separated by ':' or space/NUL if last octet */
- for (i = 0; i < 6; i++) {
- l = strtol(s, &pp, 16);
- if (pp == s || l > 0xFF || l < 0)
- return (NULL);
- if (!(*pp == ':' || (i == 5 && (isspace(*pp) || *pp == '\0'))))
- return (NULL);
- e->ether_addr_octet[i] = (u_char)l;
- s = pp + 1;
- }
-
- /* return character after the octets ala strtol(3) */
- return (pp);
- }
-
- struct ether_addr *
- ether_aton(s)
- char *s;
- {
- static struct ether_addr n;
-
- return (_ether_aton(s, &n) ? &n : NULL);
- }
-
-