Lookups: Fix dnsdb lookup of multi-chunk TXT. Bug 3054

[exim.git] / src / src / dns.c

diff --git a/src/src/dns.c b/src/src/dns.c
index 1347deec8ac74d94391dd9c89f18193a5435d719..74c5a58c538df86abf3c37ea78d9db5462185313 100644 (file)
--- a/src/src/dns.c
+++ b/src/src/dns.c
@@ -2,7 +2,7 @@
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) The Exim Maintainers 2020 - 2022 */
+/* Copyright (c) The Exim Maintainers 2020 - 2023 */
 /* Copyright (c) University of Cambridge 1995 - 2018 */
 /* See the file NOTICE for conditions of use and distribution. */
 /* SPDX-License-Identifier: GPL-2.0-or-later */
@@ -431,7 +431,9 @@ namelen = dn_expand(dnsa->answer, dnsa->answer + dnsa->answerlen, dnss->aptr,
 if (namelen < 0) goto null_return;
 
 /* Move the pointer past the name and fill in the rest of the data structure
-from the following bytes. */
+from the following bytes.  We seem to be assuming here that the RR blob passed
+to us by the resolver library is the same as that defined for an RR by RFC 1035
+section 3.2.1 */
 
 TRACE trace = "R-name";
 if (dnss_inc_aptr(dnsa, dnss, namelen)) goto null_return;