Add the "Edit:Protocols..." feature which currently only implements

the following:

It is now possible to enable/disable a particular protocol decoding
(i.e. the protocol dissector is void or not). When a protocol
is disabled, it is displayed as Data and of course, all linked
sub-protocols are disabled as well.

Disabling a protocol could be interesting:

- in case of buggy dissectors
- in case of wrong heuristics
- for performance reasons
- to decode the data as another protocol (TODO)

Currently (if I am not wrong), all dissectors but NFS can be disabled
(and dissectors that do not register protocols :-)

I do not like the way the RPC sub-dissectors are disabled (in the
sub-dissectors) since this could be done in the RPC dissector itself,
knowing the sub-protocol hfinfo entry (this is why, I've not modified
the NFS one yet).

Two functions are added in proto.c :

gboolean proto_is_protocol_enabled(int n);
void proto_set_decoding(int n, gboolean enabled);

and two MACROs which can be used in dissectors:

OLD_CHECK_DISPLAY_AS_DATA(index, pd, offset, fd, tree)
CHECK_DISPLAY_AS_DATA(index, tvb, pinfo, tree)

See also the XXX in proto_dlg.c and proto.c around the new functions.

svn path=/trunk/; revision=2267

1 files changed, 3 insertions, 1 deletions

diff --git a/packet-bgp.c b/packet-bgp.c
index 87290fe049..6e36073aea 100644
--- a/packet-bgp.c
+++ b/packet-bgp.c
@@ -2,7 +2,7 @@
  * Routines for BGP packet dissection.
  * Copyright 1999, Jun-ichiro itojun Hagino <itojun@itojun.org>
  *
- * $Id: packet-bgp.c,v 1.25 2000/08/11 13:35:29 deniel Exp $
+ * $Id: packet-bgp.c,v 1.26 2000/08/13 14:08:02 deniel Exp $
  * 
  * Supports:
  * RFC1771 A Border Gateway Protocol 4 (BGP-4)
@@ -1137,6 +1137,8 @@ dissect_bgp(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
     int           hlen;          /* BGP header length                */
     char          *typ;          /* BGP message type                 */
 
+    OLD_CHECK_DISPLAY_AS_DATA(proto_bgp, pd, offset, fd, tree);
+
     if (check_col(fd, COL_PROTOCOL))
 	col_add_str(fd, COL_PROTOCOL, "BGP");