libunbound/iterator/iterator.c

20  * be used to endorse or promote products derived from this software without
634 		char from[256], frm[512];
637 				qstate->reply->remote_addrlen, from,
638 				sizeof(from));
640 			print_fail_addr(iq, from, sizeof(from));
641 		snprintf(frm, sizeof(frm), "from %s", from);
1258  * saving a roundtrip from the validated lookup.
1303 		/* if !subiq->dp, it'll start from the cache, no problem */
1349  * This state either generates: 1) a response, from cache or error, 2) a
1481 		 * getting older results from cache is a bad idea, no cache */
1500 		/* item taken from cache does not match our query name, thus
1511 			log_dns_msg("msg from cache lookup", &msg->qinfo,
1521 			verbose(VERB_ALGO, "returning CNAME response from "
1544 		/* if from cache, NULL, else insert 'cache IP' len=0 */
1550 		verbose(VERB_ALGO, "returning answer from cache.");
1605 		/* remove first label from delname, root goes to hints,
1607 		/* also when prefetching an NS record, fetch it again from
1732 				/* note deleg_msg is from previous lookup,
1821 	/* see if we have an auth zone to answer from, improves dp from cache
1822 	 * (if any dp from cache) with auth zone dp, if that is lower */
1927 			/* if no dp, then it's from root, refetch unneeded */
2025 	/* select 'toget' items from the total of 'missing' items */
2036 			 * of items from a list one less in size */
2171 		verbose(VERB_ALGO, "try parent-side-name, w. glue from cache");
2174 	/* try to fill out parent glue from cache */
2177 		/* got parent stuff from cache, see if we can continue */
2178 		verbose(VERB_ALGO, "try parent-side glue from cache");
2294  * for this lookup.  We remove labels from the query to find the right point.
2675 			 * fetch results from the internet servers */
2687 			log_dns_msg("msg from auth zone",
2691 			verbose(VERB_ALGO, "forwarder, ignoring referral from auth zone");
2705 		/* like we got servfail from the auth zone lookup, and
3046 find_NS(struct reply_info* rep, size_t from, size_t to)
3049 	for(i=from; i<to; i++) {
3141 			/* test the answer is from the zone we expected,
3532 			 * gotten this from cache, so test to be sure */
3550 			 * gotten this from cache, so test to be sure */
3604  * This is a callback from walk_supers.
3710  * Callback from walk_supers for every super state that is interested in
3711  * the results from this query.
3809  * point where we ask the DS query from.
3856 	struct dns_msg* from = qstate->return_msg;
3868 		foriq->response = dns_copy_msg(from, forq->region);
3882 		if(from->rep->rrset_count != 0) {
3883 			size_t n = from->rep->rrset_count+to->rep->rrset_count;
3886 			to->rep->flags = from->rep->flags;
3888 			if(from->rep->rrset_count > RR_COUNT_MAX ||
3905 			memcpy(dest, from->rep->rrsets, from->rep->an_numrrsets
3907 			dest += from->rep->an_numrrsets;
3912 			memcpy(dest, from->rep->rrsets+from->rep->an_numrrsets,
3913 				from->rep->ns_numrrsets * sizeof(dest[0]));
3914 			dest += from->rep->ns_numrrsets;
3920 			memcpy(dest, from->rep->rrsets+from->rep->an_numrrsets+
3921 				from->rep->ns_numrrsets,
3922 				from->rep->ar_numrrsets * sizeof(dest[0]));
3925 			to->rep->an_numrrsets += from->rep->an_numrrsets;
3926 			to->rep->ns_numrrsets += from->rep->ns_numrrsets;
3927 			to->rep->ar_numrrsets += from->rep->ar_numrrsets;
3930 		if(from->rep->security < to->rep->security) /* lowest sec */
3931 			to->rep->security = from->rep->security;
3932 		if(from->rep->qdcount != 0) /* insert qd if appropriate */
3933 			to->rep->qdcount = from->rep->qdcount;
3934 		if(from->rep->ttl < to->rep->ttl) /* use smallest TTL */
3935 			to->rep->ttl = from->rep->ttl;
3936 		if(from->rep->prefetch_ttl < to->rep->prefetch_ttl)
3937 			to->rep->prefetch_ttl = from->rep->prefetch_ttl;
3938 		if(from->rep->serve_expired_ttl < to->rep->serve_expired_ttl)
3939 			to->rep->serve_expired_ttl = from->rep->serve_expired_ttl;
4071 		 * from cache does not need to be stored in the msg cache. */
4089  * This is a callback from walk_supers.
4249 	/* edns is not examined, but removed from message to help cache */
4256 	/* Copy the edns options we may got from the back end */
4274 	/* normalize and sanitize: easy to delete items from linked lists */
4297 	log_name_addr(VERB_DETAIL, "reply from", iq->dp->name,