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, 7 insertions, 1 deletions

diff --git a/packet-x25.c b/packet-x25.c
index eb94c96f81..d1e78263d8 100644
--- a/packet-x25.c
+++ b/packet-x25.c
@@ -2,7 +2,7 @@
  * Routines for x25 packet disassembly
  * Olivier Abad <oabad@cybercable.fr>
  *
- * $Id: packet-x25.c,v 1.34 2000/08/07 03:21:23 guy Exp $
+ * $Id: packet-x25.c,v 1.35 2000/08/13 14:09:13 deniel Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@zing.org>
@@ -1412,6 +1412,12 @@ dissect_x25(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
     modulo = ((bytes0_1 & 0x2000) ? 128 : 8);
     vc     = (int)(bytes0_1 & 0x0FFF);
 
+    if (modulo == 8) {
+      CHECK_DISPLAY_AS_DATA(proto_x25, tvb, pinfo, tree);
+    } else {
+      CHECK_DISPLAY_AS_DATA(proto_ex25, tvb, pinfo, tree);
+    }
+
     if (bytes0_1 & 0x8000) toa = TRUE;
     else toa = FALSE;