From 7f00d93d646e52579facf811d5211f6da7c68fda Mon Sep 17 00:00:00 2001
From: Mark Wooding <mdw@distorted.org.uk>
Date: Thu, 26 Mar 2015 01:43:46 +0000
Subject: [PATCH] zone.lisp: Support for DS records.

---
 zone.lisp | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/zone.lisp b/zone.lisp
index f3ea23c..bd3cd3f 100644
--- a/zone.lisp
+++ b/zone.lisp
@@ -1163,6 +1163,39 @@
     (rec-octet-vector data))
   52)
 
+(defenum dnssec-algorithm ()
+  (:rsamd5 1)
+  (:dh 2)
+  (:dsa 3)
+  (:rsasha1 5)
+  (:dsa-nsec3-sha1 6)
+  (:rsasha1-nsec3-sha1 7)
+  (:rsasha256 8)
+  (:rsasha512 10)
+  (:ecc-gost 12)
+  (:ecdsap256sha256 13)
+  (:ecdsap384sha384 14))
+
+(defenum dnssec-digest ()
+  (:sha1 1)
+  (:sha256 2))
+
+(defzoneparse :ds (name data rec)
+  ":ds ((TAG ALGORITHM DIGEST-TYPE DIGEST)*)"
+  (dolist (ds data)
+    (destructuring-bind (tag alg hashtype hash) ds
+      (rec :data (list tag
+		       (lookup-enum 'dnssec-algorithm alg :min 0 :max 255)
+		       (lookup-enum 'dnssec-digest hashtype :min 0 :max 255)
+		       (decode-hex hash))))))
+
+(defmethod zone-record-rrdata ((type (eql :ds)) zr)
+  (destructuring-bind (tag alg hashtype hash) zr
+    (rec-u16 tag)
+    (rec-u8 alg)
+    (rec-u8 hashtype)
+    (rec-octet-vector hash)))
+
 (defzoneparse :mx (name data rec :zname zname)
   ":mx ((HOST :prio INT :ip IPADDR)*)"
   (dolist (mx (listify data))
@@ -1583,6 +1616,11 @@ $TTL ~2@*~D~2%"
     (bind-format-record zr "~2D ~2D ~2D " usage selector match)
     (bind-write-hex data 12)))
 
+(defmethod zone-write-record ((format (eql :bind)) (type (eql :ds)) zr)
+  (destructuring-bind (tag alg hashtype hash) (zr-data zr)
+    (bind-format-record zr "~5D ~2D ~2D " tag alg hashtype)
+    (bind-write-hex hash 12)))
+
 (defmethod zone-write-record ((format (eql :bind)) (type (eql :txt)) zr)
   (bind-format-record zr "~{~#[\"\"~;~S~:;(~@{~%~8T~S~} )~]~}~%"
 		      (zr-data zr)))
-- 
2.11.0