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#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "__dns.h"
int __ipparse(void *dest, int family, const char *s0)
{
const char *s = s0;
unsigned char *d = dest;
unsigned long a[16] = { 0 };
char *z;
int i;
if (family == AF_INET6) goto not_v4;
for (i=0; i<4; i++) {
a[i] = strtoul(s, &z, 0);
if (z==s || (*z && *z != '.') || !isdigit(*s)) {
if (family == AF_INET) return -1;
goto not_v4;
}
if (!*z) break;
s=z+1;
}
if (i==4) return -1;
switch (i) {
case 0:
a[1] = a[0] & 0xffffff;
a[0] >>= 24;
case 1:
a[2] = a[1] & 0xffff;
a[1] >>= 16;
case 2:
a[3] = a[2] & 0xff;
a[2] >>= 8;
}
((struct sockaddr_in *)d)->sin_family = AF_INET;
d = (void *)&((struct sockaddr_in *)d)->sin_addr;
for (i=0; i<4; i++) {
if (a[i] > 255) return -1;
d[i] = a[i];
}
return 0;
not_v4:
s = s0;
((struct sockaddr_in6 *)d)->sin6_family = AF_INET6;
return inet_pton(AF_INET6, s, (void *)&((struct sockaddr_in6 *)d)->sin6_addr) <= 0 ? -1 : 0;
}
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