MINOR: resolvers: new function find_srvrq_answer_record()
This function search for a SRV answer item associated to a requester
whose type is server.
This is mainly useful to "link" a server to its SRV record when no
additional record were found to configure the IP address.
This patch is required by a bug fix.
diff --git a/src/resolvers.c b/src/resolvers.c
index 4d960b7..66712dd 100644
--- a/src/resolvers.c
+++ b/src/resolvers.c
@@ -224,6 +224,37 @@
}
+/* finds and return the SRV answer item associated to a requester (whose type is 'server').
+ *
+ * returns NULL in case of error or not found.
+ */
+struct resolv_answer_item *find_srvrq_answer_record(const struct resolv_requester *requester)
+{
+ struct resolv_resolution *res;
+ struct resolv_answer_item *item;
+ struct server *srv;
+
+ if (!requester)
+ return NULL;
+
+ if ((srv = objt_server(requester->owner)) == NULL)
+ return NULL;
+ /* check if the server is managed by a SRV record */
+ if (srv->srvrq == NULL)
+ return NULL;
+
+ res = srv->srvrq->requester->resolution;
+ /* search an ANSWER record whose target points to the server's hostname and whose port is
+ * the same as server's svc_port */
+ list_for_each_entry(item, &res->response.answer_list, list) {
+ if (resolv_hostname_cmp(srv->hostname_dn, item->target, srv->hostname_dn_len) == 0 &&
+ (srv->svc_port == item->port))
+ return item;
+ }
+
+ return NULL;
+}
+
/* 2 bytes random generator to generate DNS query ID */
static inline uint16_t resolv_rnd16(void)
{