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/*
* lib/strip.c This file contains an implementation of the STRIP
* support functions.
*
* Version: strip.c 1.20 1999/04/22 eswierk
*
* Author: Stuart Cheshire <cheshire@cs.stanford.edu>
*
* 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_HWSTRIP
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <net/if_arp.h>
#include <linux/types.h>
#include <linux/if_strip.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include "net-support.h"
#include "pathnames.h"
#include "util.h"
#include "intl.h"
extern struct hwtype strip_hwtype;
static char *
pr_strip(unsigned char *ptr)
{
static char buff[64];
if(ptr[1])
sprintf(buff, "%02x-%02x%02x-%02x%02x", *(ptr+1), *(ptr+2), *(ptr+3),
*(ptr+4), *(ptr+5));
else
sprintf(buff, "%02x%02x-%02x%02x", *(ptr+2), *(ptr+3), *(ptr+4),
*(ptr+5));
return buff;
}
static int
in_strip(char *bufp, struct sockaddr *sap)
{
int i,i0;
MetricomAddress *haddr = (MetricomAddress *) (sap->sa_data);
sap->sa_family = strip_hwtype.type;
/* figure out what the device-address should be */
i0 = i = (bufp[0] == '*') ? 1 : 0;
while (bufp[i] && (bufp[i] != '-'))
i++;
if (bufp[i] != '-')
return -1;
if(i-i0 == 2)
{
haddr->c[1] = strtol(&bufp[i0], 0, 16);
i++;
if(bufp[i] == 0) return -1;
}else{
haddr->c[1] = 0;
i=i0;
}
haddr->c[2] = strtol(&bufp[i], 0, 16) >> 8;
haddr->c[3] = strtol(&bufp[i], 0, 16) & 0xFF;
while (bufp[i] && (bufp[i] != '-'))
i++;
if (bufp[i] != '-')
return -1;
haddr->c[4] = strtol(&bufp[i+1], 0, 16) >> 8;
haddr->c[5] = strtol(&bufp[i+1], 0, 16) & 0xFF;
haddr->c[0] = 0;
return 0;
}
/* Start the STRIP encapsulation on the file descriptor. */
static int do_strip(int fd)
{
int disc = N_STRIP;
if (ioctl(fd, TIOCSETD, &disc) < 0)
{
fprintf(stderr, "STRIP_set_disc(%d): %s\n", disc, strerror(errno));
return(-errno);
}
return(0);
}
struct hwtype strip_hwtype = {
"strip", "Metricom Starmode IP", ARPHRD_METRICOM, sizeof(MetricomAddress),
pr_strip, in_strip, do_strip, 0
};
#endif /* HAVE_HWSTRIP */
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