2 * Routines for X25 over TCP dissection (RFC 1613)
4 * Copyright 2000, Paul Ionescu <paul@acorp.ro>
6 * $Id: packet-xot.c,v 1.2 2001/01/03 06:55:34 guy Exp $
8 * Ethereal - Network traffic analyzer
9 * By Gerald Combs <gerald@zing.org>
10 * Copyright 1998 Gerald Combs
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version 2
16 * of the License, or (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
39 #include "packet-x25.h"
41 #define TCP_PORT_XOT 1998
43 static gint proto_xot = -1;
44 static gint ett_xot = -1;
46 static void dissect_xot(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
53 CHECK_DISPLAY_AS_DATA(proto_xot, tvb, pinfo, tree);
55 pinfo->current_proto = "XOT";
56 if (check_col(pinfo->fd, COL_PROTOCOL))
57 col_set_str(pinfo->fd, COL_PROTOCOL, "XOT");
59 version = tvb_get_ntohs(tvb,0);
60 len = tvb_get_ntohs(tvb,2);
62 if (check_col(pinfo->fd, COL_INFO))
63 col_add_fstr(pinfo->fd, COL_INFO, "XOT Version = %u, size = %u",version,len );
67 ti = proto_tree_add_protocol_format(tree, proto_xot, tvb, 0, 4, "X.25 over TCP");
68 xot_tree = proto_item_add_subtree(ti, ett_xot);
70 ti = proto_tree_add_text(xot_tree, tvb, 0,2,"XOT Version : %u %s",version,(version==0?"":" - Unknown version")) ;
71 ti = proto_tree_add_text(xot_tree, tvb, 2,2,"XOT length : %u",len) ;
73 next_tvb = tvb_new_subset(tvb,4, -1 , -1);
74 dissect_x25(next_tvb,pinfo,tree);
77 /* Register the protocol with Ethereal */
78 void proto_register_xot(void)
82 /* Setup protocol subtree array */
83 static gint *ett[] = {
87 /* Register the protocol name and description */
88 proto_xot = proto_register_protocol("X.25 over TCP", "XOT", "xot");
90 /* Required function calls to register the header fields and subtrees used */
91 proto_register_subtree_array(ett, array_length(ett));
95 proto_reg_handoff_xot(void)
97 dissector_add("tcp.port", TCP_PORT_XOT, dissect_xot);