forked from osmocom/wireshark
![Laurent Deniel](/assets/img/avatar_default.png)
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
99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
/* packet-time.c
|
|
* Routines for time packet dissection
|
|
*
|
|
* Richard Sharpe <rsharpe@ns.aus.com>
|
|
* Craig Newell <CraigN@cheque.uq.edu.au>
|
|
* RFC2347 TIME Option Extension
|
|
*
|
|
* $Id: packet-time.c,v 1.8 2000/08/13 14:09:06 deniel Exp $
|
|
*
|
|
* Ethereal - Network traffic analyzer
|
|
* By Gerald Combs <gerald@zing.org>
|
|
* Copyright 1998 Gerald Combs
|
|
*
|
|
* Copied from packet-tftp.c
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#include "packet.h"
|
|
|
|
static int proto_time = -1;
|
|
static int hf_time_time = -1;
|
|
|
|
static gint ett_time = -1;
|
|
|
|
#define UDP_PORT_TIME 37
|
|
|
|
static void
|
|
dissect_time(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
|
|
{
|
|
proto_tree *time_tree;
|
|
proto_item *ti;
|
|
|
|
OLD_CHECK_DISPLAY_AS_DATA(proto_time, pd, offset, fd, tree);
|
|
|
|
if (check_col(fd, COL_PROTOCOL))
|
|
col_add_str(fd, COL_PROTOCOL, "TIME");
|
|
|
|
if (check_col(fd, COL_INFO)) {
|
|
col_add_fstr(fd, COL_INFO, "TIME %s", pi.srcport == UDP_PORT_TIME? "Response":"Request");
|
|
}
|
|
|
|
if (tree) {
|
|
|
|
ti = proto_tree_add_item(tree, proto_time, NullTVB, offset, END_OF_FRAME, FALSE);
|
|
time_tree = proto_item_add_subtree(ti, ett_time);
|
|
|
|
proto_tree_add_text(time_tree, NullTVB, offset, 0,
|
|
pi.srcport==37? "Type: Response":"Type: Request");
|
|
if (pi.srcport == 37) {
|
|
guint32 delta_seconds = pntohl(pd+offset);
|
|
proto_tree_add_text(time_tree, NullTVB, offset, 4,
|
|
" %u seconds since midnight 1 January 1900 GMT",
|
|
delta_seconds);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
proto_register_time(void)
|
|
{
|
|
|
|
static hf_register_info hf[] = {
|
|
{ &hf_time_time,
|
|
{ "Time", "time.time",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Seconds since 00:00 (midnight) 1 January 1900 GMT" }}
|
|
};
|
|
static gint *ett[] = {
|
|
&ett_time,
|
|
};
|
|
|
|
proto_time = proto_register_protocol("Time Protocol", "time");
|
|
proto_register_field_array(proto_time, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_time(void)
|
|
{
|
|
old_dissector_add("udp.port", UDP_PORT_TIME, dissect_time);
|
|
}
|