lib/ip/ethera2n.c

   1 /*
   2 ethera2n.c
   3
   4 Convert an ASCII string with an ethernet address into a struct ether_addr.
   5
   6 Created:        Nov 17, 1992 by Philip Homburg
   7 */
   8
   9 #include <sys/types.h>
  10 #include <stdlib.h>
  11 #include <net/netlib.h>
  12 #include <net/gen/ether.h>
  13 #include <net/gen/if_ether.h>
  14
  15 struct ether_addr *ether_aton(s)
  16 _CONST char *s;
  17 {
  18         static struct ether_addr ea;
  19
  20         int i;
  21         long v;
  22         char *check;
  23
  24         if (s == NULL)
  25                 return NULL;
  26
  27         for (i=0; i<6; i++)
  28         {
  29                 v= strtol(s, &check, 16);
  30                 if (v<0 || v>255)
  31                         return NULL;
  32                 if ((i<5 && check[0] != ':') || (i == 5 && check[0] != '\0'))
  33                         return NULL;
  34                 ea.ea_addr[i]= v;
  35                 s= check+1;
  36         }
  37         return &ea;
  38 }
  39
  40 /*
  41  * $PchId: ethera2n.c,v 1.3 1996/02/22 21:10:01 philip Exp $
  42  */