1 #include <errno.h> 2 #include <sys/types.h> 3 #include <sys/socket.h> 4 #include <netinet/in.h> 5 6 #include "utils.h" 7 8 static __inline__ int do_digit(char *str, u_int32_t addr, u_int32_t scale, size_t *pos, size_t len) 9 { 10 u_int32_t tmp = addr >> (scale * 4); 11 12 if (*pos == len) 13 return 1; 14 15 tmp &= 0x0f; 16 if (tmp > 9) 17 *str = tmp + 'A' - 10; 18 else 19 *str = tmp + '0'; 20 (*pos)++; 21 22 return 0; 23 } 24 25 static const char *ipx_ntop1(const struct ipx_addr *addr, char *str, size_t len) 26 { 27 int i; 28 size_t pos = 0; 29 30 if (len == 0) 31 return str; 32 33 for(i = 7; i >= 0; i--) 34 if (do_digit(str + pos, ntohl(addr->ipx_net), i, &pos, len)) 35 return str; 36 37 if (pos == len) 38 return str; 39 40 *(str + pos) = '.'; 41 pos++; 42 43 for(i = 0; i < 6; i++) { 44 if (do_digit(str + pos, addr->ipx_node[i], 1, &pos, len)) 45 return str; 46 if (do_digit(str + pos, addr->ipx_node[i], 0, &pos, len)) 47 return str; 48 } 49 50 if (pos == len) 51 return str; 52 53 *(str + pos) = 0; 54 55 return str; 56 } 57 58 59 const char *ipx_ntop(int af, const void *addr, char *str, size_t len) 60 { 61 switch(af) { 62 case AF_IPX: 63 errno = 0; 64 return ipx_ntop1((struct ipx_addr *)addr, str, len); 65 default: 66 errno = EAFNOSUPPORT; 67 } 68 69 return NULL; 70 } 71 72 73
