From 0641d8970d84a3857fc274673bb433d3cda0cdb8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Love=20H=C3=B6rnquist=20=C3=85strand?= <lha@kth.se>
Date: Sat, 16 Oct 2004 12:17:47 +0000
Subject: [PATCH] add ds_record

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@14318 ec53bebd-3082-4978-b11e-865c3cabbd6b
---
 lib/roken/resolve.c | 32 ++++++++++++++++++++++++--------
 lib/roken/resolve.h |  9 +++++++++
 2 files changed, 33 insertions(+), 8 deletions(-)

diff --git a/lib/roken/resolve.c b/lib/roken/resolve.c
index e6934f116..e4ad1545e 100644
--- a/lib/roken/resolve.c
+++ b/lib/roken/resolve.c
@@ -73,6 +73,7 @@ static struct stot{
     DECL(srv),
     DECL(naptr),
     DECL(sshfp),
+    DECL(ds),
     {NULL, 	0}
 };
 
@@ -327,7 +328,6 @@ parse_record(const unsigned char *data, const unsigned char *end_data,
     }
     case rk_ns_t_sshfp : {
 	size_t sshfp_len;
-	unsigned type;
 
 	if (size < 2) {
 	    free(*rr);
@@ -336,13 +336,6 @@ parse_record(const unsigned char *data, const unsigned char *end_data,
 
 	sshfp_len = size - 2;
 
-	type = p[1];
-
-	if (type != 1 && sshfp_len != 20) /* SHA-1 */ {
-	    free(*rr);
-	    return -1;
-	}
-
 	(*rr)->u.sshfp = malloc (sizeof(*(*rr)->u.sshfp) + sshfp_len - 1);
 	if ((*rr)->u.sshfp == NULL) {
 	    free(*rr);
@@ -355,6 +348,29 @@ parse_record(const unsigned char *data, const unsigned char *end_data,
 	memcpy ((*rr)->u.sshfp->sshfp_data, p + 2, sshfp_len);
 	break;
     }
+    case rk_ns_t_ds: {
+	size_t digest_len;
+
+	if (size < 4) {
+	    free(*rr);
+	    return -1;
+	}
+
+	digest_len = size - 4;
+
+	(*rr)->u.ds = malloc (sizeof(*(*rr)->u.ds) + digest_len - 1);
+	if ((*rr)->u.ds == NULL) {
+	    free(*rr);
+	    return -1;
+	}
+
+	(*rr)->u.ds->key_tag     = (p[0] << 8) | p[1];
+	(*rr)->u.ds->algorithm   = p[2];
+	(*rr)->u.ds->digest_type = p[3];
+	(*rr)->u.ds->digest_len  = digest_len;
+	memcpy ((*rr)->u.ds->digest_data, p + 4, digest_len);
+	break;
+    }
     default:
 	(*rr)->u.data = (unsigned char*)malloc(size);
 	if(size != 0 && (*rr)->u.data == NULL) {
diff --git a/lib/roken/resolve.h b/lib/roken/resolve.h
index 4e365fd19..34cfc0eed 100644
--- a/lib/roken/resolve.h
+++ b/lib/roken/resolve.h
@@ -80,6 +80,7 @@ typedef enum {
 	rk_ns_t_sink = 40,	/* Kitchen sink (experimentatl) */
 	rk_ns_t_opt = 41,	/* EDNS0 option (meta-RR) */
 	rk_ns_t_apl = 42,	/* Address prefix list (RFC 3123) */
+	rk_ns_t_ds = 43,	/* Delegation Signer (RFC 3658) */
 	rk_ns_t_sshfp = 44,	/* SSH fingerprint */
 	rk_ns_t_tkey = 249,	/* Transaction key */
 	rk_ns_t_tsig = 250,	/* Transaction signature. */
@@ -218,6 +219,13 @@ struct sshfp_record {
     u_char   sshfp_data[1];
 };
 
+struct ds_record {
+    unsigned key_tag;
+    unsigned algorithm;
+    unsigned digest_type;
+    unsigned digest_len;
+    u_char digest_data[1];
+};
 
 struct resource_record{
     char *domain;
@@ -236,6 +244,7 @@ struct resource_record{
 	struct cert_record *cert;
 	struct sig_record *sig;
 	struct sshfp_record *sshfp;
+	struct ds_record *ds;
     }u;
     struct resource_record *next;
 };