return -1;
}
+ if ((a->class & ~CLASS_FLUSH) != CLASS_IN)
+ return -1;
+
rdata = *b;
if (a->rdlength > *rlen) {
fprintf(stderr, "dropping: bad question\n");
*b += a->rdlength;
if (cache)
- cache_answer(iface, buffer, len, name, a, rdata);
+ cache_answer(iface, buffer, len, name, a, rdata, a->class & CLASS_FLUSH);
return 0;
}
}
void
-dns_handle_packet(struct interface *iface, uint8_t *buffer, int len, int unicast)
+dns_handle_packet(struct interface *iface, struct sockaddr *s, uint16_t port, uint8_t *buffer, int len)
{
struct dns_header *h;
uint8_t *b = buffer;
return;
}
+ if (h->questions && !iface->multicast && port != 5353)
+ // silently drop unicast questions that dont originate from port 5353
+ return;
+
while (h->questions-- > 0) {
char *name = dns_consume_name(buffer, len, &b, &rlen);
struct dns_question *q;