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, 5 insertions, 1 deletions

diff --git a/packet-ppp.c b/packet-ppp.c
index 38a459b66b..6ec222100d 100644
--- a/packet-ppp.c
+++ b/packet-ppp.c
@@ -1,7 +1,7 @@
 /* packet-ppp.c
  * Routines for ppp packet disassembly
  *
- * $Id: packet-ppp.c,v 1.38 2000/08/07 03:21:00 guy Exp $
+ * $Id: packet-ppp.c,v 1.39 2000/08/13 14:08:38 deniel Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@zing.org>
@@ -1046,6 +1046,8 @@ dissect_mp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
   int         first, last;
   tvbuff_t	*next_tvb;
 
+  CHECK_DISPLAY_AS_DATA(proto_mp, tvb, pinfo, tree);
+
   flags = tvb_get_guint8(tvb, 0);
   first = flags && MP_FRAG_FIRST;
   last  = flags && MP_FRAG_LAST;
@@ -1123,6 +1125,8 @@ dissect_ppp( tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree ) {
   tvbuff_t   *next_tvb;
   guint8     byte0;
 
+  CHECK_DISPLAY_AS_DATA(proto_ppp, tvb, pinfo, tree);
+
   pinfo->current_proto = "PPP";
   byte0 = tvb_get_guint8(tvb, 0);