#ifndef HAVE_INET_ATON
int inet_aton(const char *cp, struct in_addr *inp)
{
+ unsigned int a1, a2, a3, a4;
+ unsigned long ret;
+
if (strcmp(cp, "255.255.255.255") == 0) {
inp->s_addr = (unsigned) -1;
return 1;
}
- inp->s_addr = inet_addr(cp);
+ if (sscanf(cp, "%u.%u.%u.%u", &a1, &a2, &a3, &a4) != 4 ||
+ a1 > 255 || a2 > 255 || a3 > 255 || a4 > 255) {
+ return 1;
+ }
+
+ ret = (a1 << 24) | (a2 << 16) | (a3 << 8) | a4;
+
+ inp->s_addr = htonl(ret);
+
if (inp->s_addr == (unsigned) -1) {
return 0;
}