get_catalog: don't include dn42 zones

1 files changed, 14 insertions, 1 deletions

diff --git a/bin/get_catalog b/bin/get_catalog
index 39c8a37..4c069ac 100755
--- a/bin/get_catalog
+++ b/bin/get_catalog
@@ -30,9 +30,22 @@ def axfr(zonename, hostname):
 	raise (last_exc)
 
 def print_catalog(zone):
+	def origin(node):
+		try:
+			return [
+				''.join(s.decode('utf-8') for s in rdata.strings)
+				for rdata in
+					zone.find_node(f"origin.ext.{node}")
+						.find_rdataset(dns.rdataclass.IN,
+							       dns.rdatatype.TXT)
+			]
+		except KeyError:
+			return []
+
 	nodes = [node
 		 for (name, node) in zone.nodes.items()
-		 if len(name) == 2 and name[1] == b"zones"]
+		 if len(name) == 2 and name[1] == b"zones"
+		    and not "dn42" in origin(name)]
 
 	ptrs = [str(ptr.target).rstrip('.')
 		for node in nodes