blob: 14e7219b4f0bc0646ed5af12be98ea32577be3a8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
#include <arpa/inet.h>
#include <errno.h>
#include <stdlib.h>
int inet_pton(int af, const char *restrict src, void *restrict dst)
{
if (af == AF_INET) {
in_addr_t *a = dst;
unsigned long parts[4] = { 0 };
size_t part = 0;
while (*src && part < sizeof(parts)) {
char *next = NULL;
parts[part] = strtoul(src, &next, 0);
if (parts[part] > 255) {
return 0;
}
if (*next == '.') {
part++;
src = next + 1;
} else {
src = next;
}
}
if (part != sizeof(parts) - 1) {
return 0;
}
*a = htonl((parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8) | parts[3]);
return 1;
}
if (af != AF_INET6) {
errno = EAFNOSUPPORT;
return -1;
}
/* do ipv6 conversion */
return 1;
}
|
