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/*
* lib/ether.c This file contains an implementation of the "Ethernet"
* support functions for the NET-2 base distribution.
*
* Version: @(#)ether.c 1.10 10/07/93
*
* Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
* Copyright 1993 MicroWalt Corporation
*
* This program is free software; you can redistribute it
* and/or modify it under the terms of the GNU General
* Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at
* your option) any later version.
*/
#include "config.h"
#if HAVE_HWETHER
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if_arp.h>
#include <linux/if_ether.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <ctype.h>
#include <string.h>
#include <unistd.h>
#include "net-support.h"
#include "pathnames.h"
#include "intl.h"
extern struct hwtype ether_hwtype;
/* Display an Ethernet address in readable format. */
static char *
pr_ether(unsigned char *ptr)
{
static char buff[64];
snprintf(buff, sizeof(buff), "%02X:%02X:%02X:%02X:%02X:%02X",
(ptr[0] & 0377), (ptr[1] & 0377), (ptr[2] & 0377),
(ptr[3] & 0377), (ptr[4] & 0377), (ptr[5] & 0377)
);
return(buff);
}
/* Display an Ethernet socket address. */
static char *
pr_sether(struct sockaddr *sap)
{
static char buf[64];
if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
return strncpy (buf, _("[NONE SET]"), sizeof (buf));
return(pr_ether(sap->sa_data));
}
/* Input an Ethernet address and convert to binary. */
static int
in_ether(char *bufp, struct sockaddr *sap)
{
unsigned char *ptr;
char c, *orig;
int i;
unsigned val;
sap->sa_family = ether_hwtype.type;
ptr = sap->sa_data;
i = 0;
orig = bufp;
while((*bufp != '\0') && (i < ETH_ALEN)) {
val = 0;
c = *bufp++;
if (isdigit(c)) val = c - '0';
else if (c >= 'a' && c <= 'f') val = c - 'a' + 10;
else if (c >= 'A' && c <= 'F') val = c - 'A' + 10;
else {
#ifdef DEBUG
fprintf(stderr, _("in_ether(%s): invalid ether address!\n"), orig);
#endif
errno = EINVAL;
return(-1);
}
val <<= 4;
c = *bufp;
if (isdigit(c)) val |= c - '0';
else if (c >= 'a' && c <= 'f') val |= c - 'a' + 10;
else if (c >= 'A' && c <= 'F') val |= c - 'A' + 10;
else if (c == ':' || c == 0) val >>= 4;
else {
#ifdef DEBUG
fprintf(stderr, _("in_ether(%s): invalid ether address!\n"), orig);
#endif
errno = EINVAL;
return(-1);
}
if (c != 0) bufp++;
*ptr++ = (unsigned char) (val & 0377);
i++;
/* We might get a semicolon here - not required. */
if (*bufp == ':') {
if (i == ETH_ALEN) {
#ifdef DEBUG
fprintf(stderr, _("in_ether(%s): trailing : ignored!\n"),
orig)
#endif
; /* nothing */
}
bufp++;
}
}
/* That's it. Any trailing junk? */
if ((i == ETH_ALEN) && (*bufp != '\0')) {
#ifdef DEBUG
fprintf(stderr, _("in_ether(%s): trailing junk!\n"), orig);
errno = EINVAL;
return(-1);
#endif
}
#ifdef DEBUG
fprintf(stderr, "in_ether(%s): %s\n", orig, pr_ether(sap->sa_data));
#endif
return(0);
}
struct hwtype ether_hwtype = {
"ether", NULL, /*"10Mbps Ethernet",*/ ARPHRD_ETHER, ETH_ALEN,
pr_ether, pr_sether, in_ether, NULL
};
#endif /* HAVE_HWETHER */
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