From 44f5496be8c0a584bdba371135bc9a7d4bd2ef52 Mon Sep 17 00:00:00 2001
From: Federico Lucifredi <flucifredi@acm.org>
Date: Thu, 17 Jan 2008 07:16:44 +0000
Subject: adding avahi_get_local_zsk_pubkey(uint32_t ttl).

git-svn-id: file:///home/lennart/svn/public/avahi/branches/federico2@1718 941a03a8-eaeb-0310-b9a0-b1bbd8fe43fe
---
 avahi-core/dns.c | 31 +++++++++++++++++++++++++++++++
 avahi-core/dns.h |  5 +++++
 2 files changed, 36 insertions(+)

diff --git a/avahi-core/dns.c b/avahi-core/dns.c
index 0206ec7..29fe515 100644
--- a/avahi-core/dns.c
+++ b/avahi-core/dns.c
@@ -858,3 +858,34 @@ size_t avahi_rdata_serialize(AvahiRecord *record, void *rdata, size_t max_size)
     
     return p.size;
 }
+
+/* TODO: should this be located in this file? */
+/* r = avahi_get_local_zsk_pubkey(<ttl>) */
+AvahiRecord* avahi_get_local_zsk_pubkey(uint32_t ttl){
+
+    AvahiRecord *r;
+
+    r = avahi_record_new_full(keyname, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_DNSKEY, 0);
+
+    if (!r) {
+      avahi_log_error("avahi_record_new_full() failed.");
+        return NULL;
+    }
+
+    r->ttl = ttl;   /* TTL of records associated with a signature MUST match the record's */
+
+    r->flags = AVAHI_DNSSEC_DNSKEY_ZK_FLAG; /* bit 7 MUST be set to indicate DNSSEC key */
+
+    r->protocol = AVAHI_DNSSEC_PROTO; /* used for "compatibility" with KEY record */
+
+    /* TODO: in merged version into upstream, key needs to be an external configurable pulled from /etc */
+    /* in the prototype, we just statically configure */
+
+    r->algorithm = AVAHI_DNSSEC_KEY_SHA1; /* SHA1 is mandatory in the spec, but others do exist */
+
+    /* statically using key 62051 which has 512b length */
+    /* 512b ZSK pubkey in base64 encoding */
+    r->public_key = avahi_strndup("AQO/7WDOTMzPbRAEVbwYttMZztSn+exNoeNTsPqNXb6dtNqpRIdzwgfS3kBtaBtqiOGyJjts7qjXbQRX/QvvFuFF", strlen("AQO/7WDOTMzPbRAEVbwYttMZztSn+exNoeNTsPqNXb6dtNqpRIdzwgfS3kBtaBtqiOGyJjts7qjXbQRX/QvvFuFF"));
+
+    return r;
+}
diff --git a/avahi-core/dns.h b/avahi-core/dns.h
index d485510..3084720 100644
--- a/avahi-core/dns.h
+++ b/avahi-core/dns.h
@@ -79,6 +79,8 @@ int avahi_dns_packet_skip(AvahiDnsPacket *p, size_t length);
 int avahi_dns_packet_is_empty(AvahiDnsPacket *p);
 size_t avahi_dns_packet_space(AvahiDnsPacket *p);
 
+AvahiRecord* avahi_get_local_zsk_pubkey(uint32_t ttl);
+
 #define AVAHI_DNS_FIELD_ID 0
 #define AVAHI_DNS_FIELD_FLAGS 1
 #define AVAHI_DNS_FIELD_QDCOUNT 2
@@ -92,6 +94,9 @@ size_t avahi_dns_packet_space(AvahiDnsPacket *p);
 #define AVAHI_DNS_FLAG_TC (1 << 9)
 #define AVAHI_DNS_FLAG_AA (1 << 10)
 
+#define AVAHI_DNSSEC_DNSKEY_ZK_FLAG = (1 << 7)
+#define AVAHI_DNSSEC_DNSKEY_SEP_FLAG = (1 << 15)
+
 #define AVAHI_DNS_FLAGS(qr, opcode, aa, tc, rd, ra, z, ad, cd, rcode) \
         (((uint16_t) !!qr << 15) |  \
          ((uint16_t) (opcode & 15) << 11) | \
-- 
cgit