| 1 | #include "dns.h" |
| 2 | #include "dd.h" |
| 3 | |
| 4 | int dd(const char *q,const char *base,char ip[4]) |
| 5 | { |
| 6 | int j; |
| 7 | unsigned int x; |
| 8 | |
| 9 | for (j = 0;;++j) { |
| 10 | if (dns_domain_equal(q,base)) return j; |
| 11 | if (j >= 4) return -1; |
| 12 | |
| 13 | if (*q <= 0) return -1; |
| 14 | if (*q >= 4) return -1; |
| 15 | if ((q[1] < '0') || (q[1] > '9')) return -1; |
| 16 | x = q[1] - '0'; |
| 17 | if (*q == 1) { |
| 18 | ip[j] = x; |
| 19 | q += 2; |
| 20 | continue; |
| 21 | } |
| 22 | if (!x) return -1; |
| 23 | if ((q[2] < '0') || (q[2] > '9')) return -1; |
| 24 | x = x * 10 + (q[2] - '0'); |
| 25 | if (*q == 2) { |
| 26 | ip[j] = x; |
| 27 | q += 3; |
| 28 | continue; |
| 29 | } |
| 30 | if ((q[3] < '0') || (q[3] > '9')) return -1; |
| 31 | x = x * 10 + (q[3] - '0'); |
| 32 | if (x > 255) return -1; |
| 33 | ip[j] = x; |
| 34 | q += 4; |
| 35 | } |
| 36 | } |