int allow_access(const union sockaddr_u *su)
{
/* A host not in the allow set is denied, but only if the --allow or
--allowfile option was given. */
if (o.allow && !addrset_contains(&o.allowset, &su->sockaddr))
return 0;
if (addrset_contains(&o.denyset, &su->sockaddr))
return 0;
return 1;
}
int main(int argc, char *argv[])
{
struct addrset *set;
char line[1024];
int i;
#ifdef WIN32
win_init();
#endif
set = addrset_new();
options_init();
for (i = 1; i < argc; i++) {
if (!addrset_add_spec(set, argv[i], o.af, !o.nodns)) {
fprintf(stderr, "Error adding spec \"%s\".\n", argv[i]);
exit(1);
}
}
while (fgets(line, sizeof(line), stdin) != NULL) {
char *s, *hostname;
struct addrinfo *addrs;
s = line;
while ((hostname = strtok(s, " \t\n")) != NULL) {
int rc;
s = NULL;
rc = resolve_name(hostname, &addrs);
if (rc != 0) {
fprintf(stderr, "Error resolving \"%s\": %s.\n", hostname, gai_strerror(rc));
continue;
}
if (addrs == NULL) {
fprintf(stderr, "No addresses found for \"%s\".\n", hostname);
continue;
}
/* Check just the first address returned. */
if (addrset_contains(set, addrs->ai_addr))
printf("%s\n", hostname);
freeaddrinfo(addrs);
}
}
addrset_free(set);
return 0;
}