Merge branch 'develop' into features/resolvconf

.travis.yml

@@ -21,4 +21,4 @@ script:
   - mkdir tests
   - cd tests
   - ../src/test/tpkg/run-all.sh
-# - ../src/test/tpkg/run-one.sh 400-static-analysis -V
+# - ../src/test/tpkg/run-one.sh 225-stub-only-valgrind-checks

ChangeLog

@@ -1,3 +1,7 @@
+* 201?-??-??: Version 1.?.?
+  * Bugfix #359: edns_client_subnet_private should set family
+    Thanks Daniel Areiza
+
 * 2017-11-11: Version 1.2.1
   * Handle more I/O error cases.  Also, when an I/O error does occur,
     never stop listening (with servers), and

src/context.c

@@ -1570,10 +1570,6 @@ getdns_context_create_with_extended_memory_functions2(
 	result->fchg_resolvconf = NULL;
 	result->fchg_hosts      = NULL;
 
-	// resolv.conf does not exist on Windows, handle differently
-	if (resolvconf_file && (r = set_os_defaults(result, resolvconf_file)))
-		goto error;
-
 	result->dnssec_allowed_skew = 0;
 	result->edns_maximum_udp_payload_size = -1;
 	if ((r = create_default_dns_transports(result)))
@@ -1625,6 +1621,14 @@ getdns_context_create_with_extended_memory_functions2(
 
 	create_local_hosts(result);
 
+	// resolv.conf does not exist on Windows, handle differently
+#ifndef USE_WINSOCK 
+	if ((set_from_os & 1) && (r = set_os_defaults(result, resolvconf_file)))
+		goto error;
+#else
+	if ((set_from_os & 1) && (r = set_os_defaults_windows(result)))
+		goto error;
+#endif
 
 	*context = result;
 	return GETDNS_RETURN_GOOD;

src/dnssec.c

@@ -3160,12 +3160,19 @@ static void check_chain_complete(chain_head *chain)
 			_getdns_context_update_root_ksk(context,&node->dnskey);
        	
 	} else if (_getdns_bogus(dnsreq)) {
+		_getdns_rrsig_iter rrsig_spc;
 		DEBUG_ANCHOR("Request was bogus!\n");
 
 		if ((head = chain) && (node = _to_the_root(head->parent))
+ 		    /* The root DNSKEY rrset */
 		    && node->dnskey.name && *node->dnskey.name == 0
+		    /* We queried it and had a response */
 		    && node->dnskey_req
-		    && node->dnskey_req->dnssec_status == GETDNS_DNSSEC_BOGUS){
+		    /* The response was bogus */
+		    && node->dnskey_req->dnssec_status == GETDNS_DNSSEC_BOGUS
+		    /* The response was bogus, but not because it has no rrsigs */
+		    && _getdns_rrsig_iter_init(&rrsig_spc, &node->dnskey)
+		    ){
 
 			DEBUG_ANCHOR("root DNSKEY set was bogus!\n");
 			if (!dnsreq->waiting_for_ta) {
@@ -3395,10 +3402,21 @@ void _getdns_validation_chain_timeout(getdns_dns_req *dnsreq)
 
 void _getdns_cancel_validation_chain(getdns_dns_req *dnsreq)
 {
-	chain_head *head = dnsreq->chain, *next, *dnskey_head;
+	chain_head *head, *next;
 	chain_node *node;
 	size_t      node_count;
 
+	/* Clear nodes under direct DNSKEY queries.
+	 * They share the DNSKEY lookup netreq, but _dnskey_query() can not
+	 * be used because we're free'ing the heads.
+	 */
+	for (head = dnsreq->chain; head; head = head->next) {
+		if (  head->rrset.rr_type == GETDNS_RRTYPE_DNSKEY
+		   && head->node_count
+		   && head->netreq == head->parent->dnskey_req)
+			head->parent->dnskey_req = NULL;
+	}
+	head = dnsreq->chain;
 	dnsreq->chain = NULL;
 	while (head) {
 		next = head->next;
@@ -3407,10 +3425,7 @@ void _getdns_cancel_validation_chain(getdns_dns_req *dnsreq)
 		    ; node_count
 		    ; node_count--, node = node->parent ) {
 
-			if (node->dnskey_req &&
+			if (node->dnskey_req)
-			    !( (dnskey_head = _dnskey_query(node))
-			     && dnskey_head->netreq == node->dnskey_req))
-
 				_getdns_context_cancel_request(
 				    node->dnskey_req->owner);
 

src/general.c

@@ -116,7 +116,7 @@ _getdns_check_dns_req_complete(getdns_dns_req *dns_req)
 
 	/* Do we have to check more suffixes on nxdomain/nodata?
 	 */
-	if (dns_req->is_dns_request &&
+	if (dns_req->is_dns_request == 1 &&
 	    dns_req->suffix_appended && /* Something was appended */
 	    dns_req->suffix_len > 1 &&  /* Next suffix available */
 	    no_answer(dns_req)) {
@@ -153,7 +153,7 @@ _getdns_check_dns_req_complete(getdns_dns_req *dns_req)
 			return;
 		}
 	} else if (
-	    dns_req->is_dns_request &&
+	    dns_req->is_dns_request == 1 &&
 	    ( dns_req->append_name ==
 	      GETDNS_APPEND_NAME_ONLY_TO_SINGLE_LABEL_AFTER_FAILURE ||
 	      dns_req->append_name ==
@@ -206,7 +206,7 @@ _getdns_check_dns_req_complete(getdns_dns_req *dns_req)
 	} else if (! results_found)
 		_getdns_call_user_callback(dns_req, NULL);
 	else if (
-	    dns_req->is_dns_request &&
+	    dns_req->is_dns_request == 1 &&
 	    (dns_req->dnssec_return_validation_chain
 #ifdef DNSSEC_ROADBLOCK_AVOIDANCE
 	    || (   dns_req->dnssec_roadblock_avoidance 
@@ -343,7 +343,7 @@ _getdns_netreq_change_state(
 	if (!netreq)
 		return;
 
-	if (!netreq->owner->is_dns_request) {
+	if (netreq->owner->is_dns_request == 0) {
 		netreq->state = new_state;
 		return;
 	}

src/request-internal.c

@@ -866,6 +866,7 @@ _getdns_dns_req_new(getdns_context *context, getdns_eventloop *loop,
 	if (! (region = GETDNS_XMALLOC(context->mf, uint8_t, 
 	    dnsreq_base_sz + (a_aaaa_query ? 2 : 1) * netreq_sz)))
 		return NULL;
+	(void) memset(region, 0, sizeof(getdns_dns_req));
 
 	result = (getdns_dns_req *)region;
 	result->netreqs[0] = (getdns_network_req *)(region + dnsreq_base_sz);

src/stub.c

@@ -151,15 +151,19 @@ calc_new_cookie(getdns_upstream *upstream, uint8_t *cookie)
 static getdns_return_t
 attach_edns_client_subnet_private(getdns_network_req *req)
 {
-	/* see
+	/* see https://tools.ietf.org/html/rfc7871#section-7.1.2
-	 * https://tools.ietf.org/html/draft-ietf-dnsop-edns-client-subnet-04#section-6 */
+	 * all-zeros is a request to not leak the data further:
-	/* all-zeros is a request to not leak the data further: */
+	 * A two byte FAMILY field is a SHOULD even when SOURCE
-	/* "\x00\x00"  FAMILY: 0 (because no address) */
+	 * and SCOPE are 0.
-	/* "\x00"  SOURCE PREFIX-LENGTH: 0 */ 
+	 * "\x00\x02"  FAMILY: 2 for IPv6 upstreams in network byte order, or
-	/* "\x00";  SCOPE PREFIX-LENGTH: 0 */
+	 * "\x00\x01"  FAMILY: 1 for IPv4 upstreams in network byte order, then:
-	return _getdns_network_req_add_upstream_option(req,
+	 * "\x00"  SOURCE PREFIX-LENGTH: 0
-						       GLDNS_EDNS_CLIENT_SUBNET,
+	 * "\x00";  SCOPE PREFIX-LENGTH: 0
-						       4, NULL);
+	 */
+	return _getdns_network_req_add_upstream_option(
+	    req, GLDNS_EDNS_CLIENT_SUBNET, 4,
+	    ( req->upstream->addr.ss_family == AF_INET6
+	    ?  "\x00\x02\x00\x00" : "\x00\x01\x00\x00" ));
 }
 
 static getdns_return_t

src/test/tpkg/125-valgrind-checks.tpkg/125-valgrind-checks.test

@@ -32,3 +32,9 @@ then
 	cat output
 	exit 1
 fi
+if ! awk '/^==.* ERROR SUMMARY/{print;if($4>0)exit(1)}' valgrind.log
+then
+	cat valgrind.log
+	cat output
+	exit 1
+fi

src/test/tpkg/225-stub-only-valgrind-checks.tpkg/225-stub-only-valgrind-checks.test

@@ -11,6 +11,7 @@ qwerlkjhasdfpuiqwyerm.1234kjhrqwersv.com
 -G TXT bogus.nlnetlabs.nl
 -H 8.8.8.8
 -H 2a04:b900:0:100::37
+-A _acme-challenge.getdnsapi.net
 EOT
 (
 	if !  "${BUILDDIR}/build-stub-only/libtool" exec valgrind -v --log-file=valgrind.log --leak-check=full --error-exitcode=1 --track-origins=yes "${GETDNS_STUB_QUERY}" -F queries -f "${TPKG_NAME}.ds" +dnssec_return_validation_chain
@@ -24,3 +25,9 @@ then
 	cat output
 	exit 1
 fi
+if ! awk '/^==.* ERROR SUMMARY/{print;if($4>0)exit(1)}' valgrind.log
+then
+	cat valgrind.log
+	cat output
+	exit 1
+fi

src/test/tpkg/run-one.sh

@@ -8,3 +8,4 @@ ONE_TEST=$1
 shift
 
 "${TPKG}" $* exe ${SRCDIR}/${ONE_TEST}.tpkg
+"${TPKG}" -n -1 r