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, 4 insertions, 1 deletions

diff --git a/packet-smb-pipe.c b/packet-smb-pipe.c
index bc1ea076b5..3a497e3a08 100644
--- a/packet-smb-pipe.c
+++ b/packet-smb-pipe.c
@@ -2,7 +2,7 @@
  * Routines for smb packet dissection
  * Copyright 1999, Richard Sharpe <rsharpe@ns.aus.com>
  *
- * $Id: packet-smb-pipe.c,v 1.9 2000/05/31 05:07:41 guy Exp $
+ * $Id: packet-smb-pipe.c,v 1.10 2000/08/13 14:08:49 deniel Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@zing.org>
@@ -1227,6 +1227,9 @@ guint32
 dissect_pipe_smb(const u_char *pd, int offset, frame_data *fd, proto_tree *parent, proto_tree *tree, struct smb_info si, int max_data, int SMB_offset, int errcode, int dirn, const u_char *command, int DataOffset, int DataCount, int ParameterOffset, int ParameterCount)
 {
 
+  if (!proto_is_protocol_enabled(proto_smb_lanman))
+    return 0;
+
   if (strcmp(command, "LANMAN") == 0) { /* Try to decode a LANMAN */
 
     return dissect_pipe_lanman(pd, offset, fd, parent, tree, si, max_data, SMB_offset, errcode, dirn, command, DataOffset, DataCount, ParameterOffset, ParameterCount);