| 1 | #include <ctype.h> |
| 2 | #include <sys/socket.h> |
| 3 | #include <netinet/in.h> |
| 4 | #include <arpa/inet.h> |
| 5 | #include <stdlib.h> |
| 6 | |
| 7 | int __inet_aton(const char *s0, struct in_addr *dest) |
| 8 | { |
| 9 | const char *s = s0; |
| 10 | unsigned char *d = (void *)dest; |
| 11 | unsigned long a[4] = { 0 }; |
| 12 | char *z; |
| 13 | int i; |
| 14 | |
| 15 | for (i=0; i<4; i++) { |
| 16 | a[i] = strtoul(s, &z, 0); |
| 17 | if (z==s || (*z && *z != '.') || !isdigit(*s)) |
| 18 | return 0; |
| 19 | if (!*z) break; |
| 20 | s=z+1; |
| 21 | } |
| 22 | if (i==4) return 0; |
| 23 | switch (i) { |
| 24 | case 0: |
| 25 | a[1] = a[0] & 0xffffff; |
| 26 | a[0] >>= 24; |
| 27 | case 1: |
| 28 | a[2] = a[1] & 0xffff; |
| 29 | a[1] >>= 16; |
| 30 | case 2: |
| 31 | a[3] = a[2] & 0xff; |
| 32 | a[2] >>= 8; |
| 33 | } |
| 34 | for (i=0; i<4; i++) { |
| 35 | if (a[i] > 255) return 0; |
| 36 | d[i] = a[i]; |
| 37 | } |
| 38 | return 1; |
| 39 | } |
| 40 | |
| 41 | weak_alias(__inet_aton, inet_aton); |