Make "make-reg-dotc" generate a "register_all_protocol_handoffs()"

routine, which calls all routines found in the dissector source files
with names that match " proto_reg_handoff_[a-z_0-9A-Z]*".

Call "register_all_protocol_handoffs()" after calling
"register_all_protocols()" - "register_all_protocols()" needs to be
called first, so that all protocols can register their fields, because
registering a dissector as being called if field "proto.port" is equal
to N requires that "proto.port" be a registered field.

Give DNS a handoff registration routine, and register its dissector to
be called if "udp.port" is UDP_PORT_DNS; remove the registration of DNS
from "packet-udp.c", and make "dissect_dns()" static (as nobody else
need know that it exists).

svn path=/trunk/; revision=1788

1 files changed, 11 insertions, 2 deletions

diff --git a/packet-dns.c b/packet-dns.c
index f5f50a02e3..f744baa3ac 100644
--- a/packet-dns.c
+++ b/packet-dns.c
@@ -1,7 +1,7 @@
 /* packet-dns.c
  * Routines for DNS packet disassembly
  *
- * $Id: packet-dns.c,v 1.40 2000/03/30 01:52:39 guy Exp $
+ * $Id: packet-dns.c,v 1.41 2000/04/04 06:17:28 guy Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@zing.org>
@@ -61,6 +61,9 @@ static gint ett_t_key_flags = -1;
 
 /* DNS structs and definitions */
 
+/* Port used for DNS. */
+#define UDP_PORT_DNS     53
+
 /* Offsets of fields in the DNS header. */
 #define	DNS_ID		0
 #define	DNS_FLAGS	2
@@ -1483,7 +1486,7 @@ dissect_answer_records(const u_char *pd, int cur_off, int dns_data_offset,
   return cur_off - start_off;
 }
 
-void
+static void
 dissect_dns(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
 {
   int dns_data_offset;
@@ -1696,3 +1699,9 @@ proto_register_dns(void)
   proto_register_field_array(proto_dns, hf, array_length(hf));
   proto_register_subtree_array(ett, array_length(ett));
 }
+
+void
+proto_reg_handoff_dns(void)
+{
+  dissector_add("udp.port", UDP_PORT_DNS, dissect_dns);
+}