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-clnp.c b/packet-clnp.c
index c302241269..27e452ef81 100644
--- a/packet-clnp.c
+++ b/packet-clnp.c
@@ -1,7 +1,7 @@
 /* packet-clnp.c
  * Routines for ISO/OSI network and transport protocol packet disassembly
  *
- * $Id: packet-clnp.c,v 1.12 2000/08/07 03:20:26 guy Exp $
+ * $Id: packet-clnp.c,v 1.13 2000/08/13 14:08:05 deniel Exp $
  * Laurent Deniel <deniel@worldnet.fr>
  * Ralf Schneider <Ralf.Schneider@t-online.de>
  *
@@ -1510,6 +1510,7 @@ static gboolean dissect_ositp_internal(const u_char *pd, int offset,
 void dissect_ositp(const u_char *pd, int offset, frame_data *fd,
 		  proto_tree *tree) 
 {
+  OLD_CHECK_DISPLAY_AS_DATA(proto_cotp, pd, offset, fd, tree);
   if (!dissect_ositp_internal(pd, offset, fd, tree, FALSE))
     old_dissect_data(pd, offset, fd, tree);
 }
@@ -1534,6 +1535,8 @@ static void dissect_clnp(const u_char *pd, int offset, frame_data *fd,
   guint16 segment_offset = 0;
   guint len;
 
+  OLD_CHECK_DISPLAY_AS_DATA(proto_clnp, pd, offset, fd, tree);
+
   if (check_col(fd, COL_PROTOCOL))
     col_add_str(fd, COL_PROTOCOL, "CLNP");