Fix a bug in SRV lookups where dnsmgr would discard everything but the

first SRV result from DNS before processing weights and priorities and 
dns_parse_answer wouldn't report that there were no records in DNS 
unless a failure occured. Also fixed a bug where dnsmgr_refresh would 
report that a entry was being changed when ast_gethostbyname had failed.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@129156 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/dns.c

@@ -189,6 +189,7 @@ static int dns_parse_answer(void *context,
 	unsigned char *fullanswer = answer;
 	struct dn_answer *ans;
 	dns_HEADER *h;
+	int ret = 0;
 	int res;
 	int x;
 
@@ -234,14 +235,13 @@ static int dns_parse_answer(void *context,
 					ast_log(LOG_WARNING, "Failed to parse result\n");
 					return -1;
 				}
-				if (res > 0)
-					return 1;
+				ret = 1;
 			}
 		}
 		answer += ntohs(ans->size);
 		len -= ntohs(ans->size);
 	}
-	return 0;
+	return ret;
 }
 
 #ifndef HAVE_RES_NINIT

main/dnsmgr.c

@@ -164,8 +164,7 @@ static int dnsmgr_refresh(struct ast_dnsmgr_entry *entry, int verbose)
 	if (verbose)
 		ast_verb(3, "refreshing '%s'\n", entry->name);
 
-	ast_get_ip_or_srv(&tmp, entry->name, entry->service);
-	if (inaddrcmp(&tmp, &entry->last)) {
+	if (!ast_get_ip_or_srv(&tmp, entry->name, entry->service) && inaddrcmp(&tmp, &entry->last)) {
 		ast_copy_string(iabuf, ast_inet_ntoa(entry->last.sin_addr), sizeof(iabuf));
 		ast_copy_string(iabuf2, ast_inet_ntoa(tmp.sin_addr), sizeof(iabuf2));
 		ast_log(LOG_NOTICE, "dnssrv: host '%s' changed from %s:%d to %s:%d\n", 

main/srv.c

@@ -137,7 +137,7 @@ static int srv_callback(void *context, unsigned char *answer, int len, unsigned
 	if (entry)
 		AST_LIST_INSERT_TAIL(&c->entries, entry, list);
 
-	return 1;
+	return 0;
 }
 
 /* Do the bizarre SRV record weight-handling algorithm