Any DNS record line can be prefixed with "NXDOMAIN ";
The record will be ignored (but the prefix set still applied);
-This lets us return a DNSSEC NXDOMAIN.
+This lets us return a DNSSEC NXDOMAIN (=> HOST_NOT_FOUND).
Any DNS record line can be prefixed with "AA "
if all the records found by a lookup are marked
(void)sprintf(CS buffer, "%s/dnszones/%s", argv[1], zonefile);
-/* Initialize the start of the response packet. We don't have to fake up
-everything, because we know that Exim will look only at the answer and
-additional section parts. */
+/* Initialize the start of the response packet. */
memset(packet, 0, 12);
pk += 12;
/* Open the zone file. */
-f = fopen(CS buffer, "r");
-if (f == NULL)
+if (!(f = fopen(CS buffer, "r")))
{
fprintf(stderr, "fakens: failed to open %s: %s\n", buffer, strerror(errno));
return NO_RECOVERY;
}
+header->qr = 1; /* query */
+header->opcode = QUERY; /* standard query */
+header->tc = 0; /* no trucation */
+
/* Find the records we want, and add them to the result. */
count = 0;
/* If the AA bit should be set (as indicated by the AA prefix in the zone file),
we are expected to return some records in the authoritative section. Bind9: If
there is data in the answer section, the authoritative section contains the NS
-records, otherwise it contains the SOA record. Currently we mimic this
-behaviour for the first case (there is some answer record).
+records, otherwise it contains the SOA record. Mimic that.
*/
-if (aa)
- find_records(f, zone, zone[0] == '.' ? zone+1 : zone, US"NS", 2, &pk, &count, NULL, NULL);
+if (strcmp(qtype, "SOA") != 0 && strcmp(qtype, "NS") != 0)
+ if (count)
+ find_records(f, zone, zone[0] == '.' ? zone+1 : zone, US"NS", 2, &pk, &count, NULL, NULL);
+ else
+ find_records(f, zone, zone[0] == '.' ? zone+1 : zone, US"SOA", 3, &pk, &count, NULL, NULL);
header->nscount = htons(count - ntohs(header->ancount));
/* There is no need to return any additional records because Exim no longer