[sr-dev] git:5.4:a9720603: core: DNS stop resolving NAPTR for IP addresses (#2541)

[Julien Chavanton]

Module: kamailio
Branch: 5.4
Commit: a97206031ff0c28f791a5789f6dfc37707a4b59d
URL: https://github.com/kamailio/kamailio/commit/a97206031ff0c28f791a5789f6dfc37707a4b59d

Author: Julien Chavanton <jchavanton at gmail.com>
Committer: Julien Chavanton <jchavanton at gmail.com>
Date: 2020-11-05T07:14:44-08:00

core: DNS stop resolving NAPTR for IP addresses (#2541)


(cherry picked from commit 37f06f031c4ce93bcf4494744282c17f7a2d157c)

---

Modified: src/core/dns_cache.c

---

Diff:  https://github.com/kamailio/kamailio/commit/a97206031ff0c28f791a5789f6dfc37707a4b59d.diff
Patch: https://github.com/kamailio/kamailio/commit/a97206031ff0c28f791a5789f6dfc37707a4b59d.patch

---

diff --git a/src/core/dns_cache.c b/src/core/dns_cache.c
index 923c65049d..e383786de2 100644
--- a/src/core/dns_cache.c
+++ b/src/core/dns_cache.c
@@ -3292,6 +3292,9 @@ inline static int dns_naptr_sip_resolve(struct dns_srv_handle* h,  str* name,
 		}
 		try_lookup_naptr = 1;
 	}
+	/* check if it's an ip address, dns_srv_sip_resolve will return the right failure */
+	if (str2ip(name) || str2ip6(name))
+		goto naptr_not_found;
 	/* do naptr lookup */
 	if ((e=dns_get_entry(name, T_NAPTR))==0)
 		goto naptr_not_found;