diff options
Diffstat (limited to 'usr/src/lib/libbc/libc/net/ether_addr.c')
| -rw-r--r-- | usr/src/lib/libbc/libc/net/ether_addr.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/usr/src/lib/libbc/libc/net/ether_addr.c b/usr/src/lib/libbc/libc/net/ether_addr.c new file mode 100644 index 0000000000..d8950e7546 --- /dev/null +++ b/usr/src/lib/libbc/libc/net/ether_addr.c @@ -0,0 +1,115 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License, Version 1.0 only + * (the "License"). You may not use this file except in compliance + * with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +#pragma ident "%Z%%M% %I% %E% SMI" + +/* + * Copyright (c) 1990 by Sun Microsystems, Inc. + * + * All routines necessary to deal with the file /etc/ethers. The file + * contains mappings from 48 bit ethernet addresses to their corresponding + * hosts name. The addresses have an ascii representation of the form + * "x:x:x:x:x:x" where x is a hex number between 0x00 and 0xff; the + * bytes are always in network order. + */ + +#include <stdio.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <net/if.h> +#include <netinet/in.h> +#include <net/if_arp.h> +#include <netinet/if_ether.h> + +static char *domain; /* NIS domain name */ +static int usingyellow; +static char *ethers = "/etc/ethers"; + +/* + * Parses a line from /etc/ethers into its components. The line has the form + * 8:0:20:1:17:c8 krypton + * where the first part is a 48 bit ethernet addrerss and the second is + * the corresponding hosts name. + * Returns zero if successful, non-zero otherwise. + */ +ether_line(s, e, hostname) + char *s; /* the string to be parsed */ + struct ether_addr *e; /* ethernet address struct to be filled in */ + char *hostname; /* hosts name to be set */ +{ + register int i; + unsigned int t[6]; + + i = sscanf(s, " %x:%x:%x:%x:%x:%x %s", + &t[0], &t[1], &t[2], &t[3], &t[4], &t[5], hostname); + if (i != 7) { + return (7 - i); + } + for (i = 0; i < 6; i++) + e->ether_addr_octet[i] = t[i]; + return (0); +} + +/* + * Converts a 48 bit ethernet number to its string representation. + */ +#define EI(i) (unsigned int)(e->ether_addr_octet[(i)]) +char * +ether_ntoa(e) + struct ether_addr *e; +{ + static char *s; + + if (s == 0) { + s = (char *)malloc(18); + if (s == 0) + return (0); + } + s[0] = 0; + sprintf(s, "%x:%x:%x:%x:%x:%x", + EI(0), EI(1), EI(2), EI(3), EI(4), EI(5)); + return (s); +} + +/* + * Converts a ethernet address representation back into its 48 bits. + */ +struct ether_addr * +ether_aton(s) + char *s; +{ + static struct ether_addr *ep; + register int i; + unsigned int t[6]; + + if (ep == 0) { + ep = (struct ether_addr *)calloc(1, sizeof (struct ether_addr)); + if (ep == 0) + return (0); + } + i = sscanf(s, " %x:%x:%x:%x:%x:%x", + &t[0], &t[1], &t[2], &t[3], &t[4], &t[5]); + if (i != 6) + return ((struct ether_addr *)NULL); + for (i = 0; i < 6; i++) + ep->ether_addr_octet[i] = t[i]; + return (ep); +} |