release/src/router/iproute2/lib/ipx_pton.c

   1 #include <errno.h>
   2 #include <string.h>
   3 #include <sys/types.h>
   4 #include <netinet/in.h>
   5
   6 #include "utils.h"
   7
   8 static u_int32_t hexget(char c)
   9 {
  10         if (c >= 'A' && c <= 'F')
  11                 return c - 'A' + 10;
  12         if (c >= 'a' && c <= 'f')
  13                 return c - 'a' + 10;
  14         if (c >= '0' && c <= '9')
  15                 return c - '0';
  16
  17         return 0xf0;
  18 }
  19
  20 static int ipx_getnet(u_int32_t *net, const char *str)
  21 {
  22         int i;
  23         u_int32_t tmp;
  24
  25         for(i = 0; *str && (i < 8); i++) {
  26
  27                 if ((tmp = hexget(*str)) & 0xf0) {
  28                         if (*str == '.')
  29                                 return 0;
  30                         else
  31                                 return -1;
  32                 }
  33
  34                 str++;
  35                 (*net) <<= 4;
  36                 (*net) |= tmp;
  37         }
  38
  39         if (*str == 0)
  40                 return 0;
  41
  42         return -1;
  43 }
  44
  45 static int ipx_getnode(u_int8_t *node, const char *str)
  46 {
  47         int i;
  48         u_int32_t tmp;
  49
  50         for(i = 0; i < 6; i++) {
  51                 if ((tmp = hexget(*str++)) & 0xf0)
  52                         return -1;
  53                 node[i] = (u_int8_t)tmp;
  54                 node[i] <<= 4;
  55                 if ((tmp = hexget(*str++)) & 0xf0)
  56                         return -1;
  57                 node[i] |= (u_int8_t)tmp;
  58                 if (*str == ':')
  59                         str++;
  60         }
  61
  62         return 0;
  63 }
  64
  65 static int ipx_pton1(const char *src, struct ipx_addr *addr)
  66 {
  67         char *sep = (char *)src;
  68         int no_node = 0;
  69
  70         memset(addr, 0, sizeof(struct ipx_addr));
  71
  72         while(*sep && (*sep != '.'))
  73                 sep++;
  74
  75         if (*sep != '.')
  76                 no_node = 1;
  77
  78         if (ipx_getnet(&addr->ipx_net, src))
  79                 return 0;
  80
  81         addr->ipx_net = htonl(addr->ipx_net);
  82
  83         if (no_node)
  84                 return 1;
  85
  86         if (ipx_getnode(addr->ipx_node, sep + 1))
  87                 return 0;
  88
  89         return 1;
  90 }
  91
  92 int ipx_pton(int af, const char *src, void *addr)
  93 {
  94         int err;
  95
  96         switch (af) {
  97         case AF_IPX:
  98                 errno = 0;
  99                 err = ipx_pton1(src, (struct ipx_addr *)addr);
 100                 break;
 101         default:
 102                 errno = EAFNOSUPPORT;
 103                 err = -1;
 104         }
 105
 106         return err;
 107 }