[PATCH 12/31] rwrap: Support asking for A via CNAME

[Andreas Schneider]

From: Jakub Hrozek <jakub.hrozek at gmail.com>

Adds support for querying for an A record using a name that only expands
into a CNAME.

Signed-off-by: Jakub Hrozek <jakub.hrozek at gmail.com>
Reviewed-by: Andreas Schneider <asn at samba.org>
Reviewed-by: Guenther Deschner <gd at samba.org>
Signed-off-by: Andreas Schneider <asn at samba.org>
---
 lib/resolv_wrapper/resolv_wrapper.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/resolv_wrapper/resolv_wrapper.c b/lib/resolv_wrapper/resolv_wrapper.c
index 69f4484..a0b2821 100644
--- a/lib/resolv_wrapper/resolv_wrapper.c
+++ b/lib/resolv_wrapper/resolv_wrapper.c
@@ -719,6 +719,13 @@ static int rwrap_get_record(const char *hostfile, unsigned recursion,
 							 value, rr + 1);
 			}
 			break;
+		} else if (TYPE_MATCH(type, ns_t_a, rec_type, "CNAME", key, query)) {
+			rc = rwrap_create_fake_cname_rr(key, value, rr);
+			if (rc == 0) {
+				rc = rwrap_cname_recurse(hostfile, recursion+1,
+							 value, rr + 1);
+			}
+			break;
 		}
 	}
 
-- 
2.1.3