lib/ipx_pton.c

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #include <errno.h>
   3 #include <string.h>
   4 #include <sys/types.h>
   5 #include <sys/socket.h>
   6 #include <netinet/in.h>
   7
   8 #include "utils.h"
   9
  10 static int ipx_getnet(u_int32_t *net, const char *str)
  11 {
  12         int i;
  13         u_int32_t tmp;
  14
  15         for(i = 0; *str && (i < 8); i++) {
  16
  17                 if ((tmp = get_hex(*str)) == -1) {
  18                         if (*str == '.')
  19                                 return 0;
  20                         else
  21                                 return -1;
  22                 }
  23
  24                 str++;
  25                 (*net) <<= 4;
  26                 (*net) |= tmp;
  27         }
  28
  29         if (*str == 0)
  30                 return 0;
  31
  32         return -1;
  33 }
  34
  35 static int ipx_getnode(u_int8_t *node, const char *str)
  36 {
  37         int i;
  38         u_int32_t tmp;
  39
  40         for(i = 0; i < 6; i++) {
  41                 if ((tmp = get_hex(*str++)) == -1)
  42                         return -1;
  43                 node[i] = (u_int8_t)tmp;
  44                 node[i] <<= 4;
  45                 if ((tmp = get_hex(*str++)) == -1)
  46                         return -1;
  47                 node[i] |= (u_int8_t)tmp;
  48                 if (*str == ':')
  49                         str++;
  50         }
  51
  52         return 0;
  53 }
  54
  55 static int ipx_pton1(const char *src, struct ipx_addr *addr)
  56 {
  57         char *sep = (char *)src;
  58         int no_node = 0;
  59
  60         memset(addr, 0, sizeof(struct ipx_addr));
  61
  62         while(*sep && (*sep != '.'))
  63                 sep++;
  64
  65         if (*sep != '.')
  66                 no_node = 1;
  67
  68         if (ipx_getnet(&addr->ipx_net, src))
  69                 return 0;
  70
  71         addr->ipx_net = htonl(addr->ipx_net);
  72
  73         if (no_node)
  74                 return 1;
  75
  76         if (ipx_getnode(addr->ipx_node, sep + 1))
  77                 return 0;
  78
  79         return 1;
  80 }
  81
  82 int ipx_pton(int af, const char *src, void *addr)
  83 {
  84         int err;
  85
  86         switch (af) {
  87         case AF_IPX:
  88                 errno = 0;
  89                 err = ipx_pton1(src, (struct ipx_addr *)addr);
  90                 break;
  91         default:
  92                 errno = EAFNOSUPPORT;
  93                 err = -1;
  94         }
  95
  96         return err;
  97 }