lib/fddi.c

   1 /*
   2  * lib/fddi.c This file contains an implementation of the "FDDI"
   3  *              support functions.
   4  *
   5  * Version:     $Id: fddi.c,v 1.7 2000/03/05 11:26:02 philip Exp $
   6  *
   7  * Author:      Lawrence V. Stefani, <stefani@lkg.dec.com>
   8  *
   9  * 1998-07-01 - Arnaldo Carvalho de Melo <acme@conectiva.com.br> GNU gettext
  10  *
  11  *              This program is free software; you can redistribute it
  12  *              and/or  modify it under  the terms of  the GNU General
  13  *              Public  License as  published  by  the  Free  Software
  14  *              Foundation;  either  version 2 of the License, or  (at
  15  *              your option) any later version.
  16  */
  17 #include "config.h"
  18
  19 #include <features.h>
  20
  21 #if HAVE_HWFDDI
  22 #include <sys/types.h>
  23 #include <sys/socket.h>
  24 #include <net/if_arp.h>
  25 #ifndef ARPHRD_FDDI
  26 #error "No FDDI Support in your current Kernelsource Tree."
  27 #error "Disable HW Type FDDI"
  28 #endif
  29 #if __GLIBC__ >= 2
  30 #include <netinet/if_fddi.h>
  31 #else
  32 #include <linux/if_fddi.h>
  33 #endif
  34 #include <stdlib.h>
  35 #include <stdio.h>
  36 #include <errno.h>
  37 #include <ctype.h>
  38 #include <string.h>
  39 #include <unistd.h>
  40 #include "net-support.h"
  41 #include "pathnames.h"
  42 #include "intl.h"
  43 #include "util.h"
  44
  45 extern struct hwtype fddi_hwtype;
  46
  47
  48 /* Display an FDDI address in readable format. */
  49 static char *pr_fddi(unsigned char *ptr)
  50 {
  51     static char buff[64];
  52
  53     snprintf(buff, sizeof(buff), "%02X-%02X-%02X-%02X-%02X-%02X",
  54              (ptr[0] & 0377), (ptr[1] & 0377), (ptr[2] & 0377),
  55              (ptr[3] & 0377), (ptr[4] & 0377), (ptr[5] & 0377)
  56         );
  57     return (buff);
  58 }
  59
  60
  61 /* Input an FDDI address and convert to binary. */
  62 static int in_fddi(char *bufp, struct sockaddr *sap)
  63 {
  64     unsigned char *ptr;
  65     char c, *orig;
  66     int i, val;
  67
  68     sap->sa_family = fddi_hwtype.type;
  69     ptr = sap->sa_data;
  70
  71     i = 0;
  72     orig = bufp;
  73     while ((*bufp != '\0') && (i < FDDI_K_ALEN)) {
  74         val = 0;
  75         c = *bufp++;
  76         if (isdigit(c))
  77             val = c - '0';
  78         else if (c >= 'a' && c <= 'f')
  79             val = c - 'a' + 10;
  80         else if (c >= 'A' && c <= 'F')
  81             val = c - 'A' + 10;
  82         else {
  83 #ifdef DEBUG
  84             fprintf(stderr, _("in_fddi(%s): invalid fddi address!\n"), orig);
  85 #endif
  86             errno = EINVAL;
  87             return (-1);
  88         }
  89         val <<= 4;
  90         c = *bufp++;
  91         if (isdigit(c))
  92             val |= c - '0';
  93         else if (c >= 'a' && c <= 'f')
  94             val |= c - 'a' + 10;
  95         else if (c >= 'A' && c <= 'F')
  96             val |= c - 'A' + 10;
  97         else {
  98 #ifdef DEBUG
  99             fprintf(stderr, _("in_fddi(%s): invalid fddi address!\n"), orig);
 100 #endif
 101             errno = EINVAL;
 102             return (-1);
 103         }
 104         *ptr++ = (unsigned char) (val & 0377);
 105         i++;
 106
 107         /* We might get a semicolon here - not required. */
 108         if (*bufp == ':') {
 109             if (i == FDDI_K_ALEN) {
 110 #ifdef DEBUG
 111                 fprintf(stderr, _("in_fddi(%s): trailing : ignored!\n"),
 112                         orig)
 113 #endif
 114                     ;           /* nothing */
 115             }
 116             bufp++;
 117         }
 118     }
 119
 120     /* That's it.  Any trailing junk? */
 121     if ((i == FDDI_K_ALEN) && (*bufp != '\0')) {
 122 #ifdef DEBUG
 123         fprintf(stderr, _("in_fddi(%s): trailing junk!\n"), orig);
 124         errno = EINVAL;
 125         return (-1);
 126 #endif
 127     }
 128 #ifdef DEBUG
 129     fprintf(stderr, "in_fddi(%s): %s\n", orig, pr_fddi(sap->sa_data));
 130 #endif
 131
 132     return (0);
 133 }
 134
 135
 136 struct hwtype fddi_hwtype =
 137 {
 138     "fddi", NULL, /*"Fiber Distributed Data Interface (FDDI)", */ ARPHRD_FDDI, FDDI_K_ALEN,
 139     pr_fddi, in_fddi, NULL
 140 };
 141
 142
 143 #endif                          /* HAVE_HWFDDI */