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-sap.c b/packet-sap.c
index 56ed067ede..d905a586c7 100644
--- a/packet-sap.c
+++ b/packet-sap.c
@@ -4,7 +4,7 @@
  *
  * Heikki Vatiainen <hessu@cs.tut.fi>
  *
- * $Id: packet-sap.c,v 1.9 2000/08/07 03:21:08 guy Exp $
+ * $Id: packet-sap.c,v 1.10 2000/08/13 14:08:44 deniel Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@zing.org>
@@ -137,6 +137,8 @@ dissect_sap(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
         proto_item *si, *sif;
         proto_tree *sap_tree, *sap_flags_tree;
 
+	OLD_CHECK_DISPLAY_AS_DATA(proto_sap, pd, offset, fd, tree);
+
         is_ipv6 = pd[offset]&MCAST_SAP_BIT_A;
         is_del = pd[offset]&MCAST_SAP_BIT_T;
         is_enc = pd[offset]&MCAST_SAP_BIT_E;