forked from osmocom/wireshark
160 lines
4.8 KiB
C
160 lines
4.8 KiB
C
/* packet-h501.c
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* Routines for H.501 packet dissection
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* 2007 Tomas Kukosa
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/prefs.h>
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#include <epan/oids.h>
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#include <epan/asn1.h>
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#include "packet-tpkt.h"
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#include "packet-per.h"
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#include "packet-h225.h"
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#include "packet-h235.h"
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#define PNAME "H.501 Mobility"
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#define PSNAME "H.501"
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#define PFNAME "h501"
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/* Initialize the protocol and registered fields */
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static int proto_h501 = -1;
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#include "packet-h501-hf.c"
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/* Initialize the subtree pointers */
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static int ett_h501 = -1;
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#include "packet-h501-ett.c"
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/* Dissectors */
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static dissector_handle_t h501_pdu_handle;
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/* Preferences */
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static guint h501_udp_port = 2099;
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static guint h501_tcp_port = 2099;
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static gboolean h501_desegment_tcp = TRUE;
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void proto_reg_handoff_h501(void);
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#include "packet-h501-fn.c"
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static int
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dissect_h501_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_item *ti = NULL;
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proto_tree *h501_tree = NULL;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, PSNAME);
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ti = proto_tree_add_item(tree, proto_h501, tvb, 0, -1, FALSE);
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h501_tree = proto_item_add_subtree(ti, ett_h501);
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return dissect_Message_PDU(tvb, pinfo, h501_tree);
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}
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static int
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dissect_h501_udp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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dissect_tpkt_encap(tvb, pinfo, tree, FALSE, h501_pdu_handle);
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return tvb_length(tvb);
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}
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static int
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dissect_h501_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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dissect_tpkt_encap(tvb, pinfo, tree, h501_desegment_tcp, h501_pdu_handle);
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return tvb_length(tvb);
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}
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/*--- proto_register_h501 ----------------------------------------------*/
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void proto_register_h501(void) {
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module_t *h501_module;
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/* List of fields */
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static hf_register_info hf[] = {
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#include "packet-h501-hfarr.c"
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};
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/* List of subtrees */
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static gint *ett[] = {
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&ett_h501,
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#include "packet-h501-ettarr.c"
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};
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/* Register protocol */
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proto_h501 = proto_register_protocol(PNAME, PSNAME, PFNAME);
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/* Register fields and subtrees */
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proto_register_field_array(proto_h501, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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new_register_dissector(PFNAME, dissect_h501_pdu, proto_h501);
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h501_module = prefs_register_protocol(proto_h501, proto_reg_handoff_h501);
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prefs_register_uint_preference(h501_module, "udp.port",
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"UDP port",
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"Port to be decoded as h501",
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10, &h501_udp_port);
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prefs_register_uint_preference(h501_module, "tcp.port",
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"TCP port",
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"Port to be decoded as h501",
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10, &h501_tcp_port);
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prefs_register_bool_preference(h501_module, "desegment",
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"Desegment H.501 over TCP",
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"Desegment H.501 messages that span more TCP segments",
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&h501_desegment_tcp);
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}
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/*--- proto_reg_handoff_h501 -------------------------------------------*/
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void proto_reg_handoff_h501(void)
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{
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static gboolean h501_prefs_initialized = FALSE;
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static dissector_handle_t h501_udp_handle;
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static dissector_handle_t h501_tcp_handle;
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static guint saved_h501_udp_port;
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static guint saved_h501_tcp_port;
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if (!h501_prefs_initialized) {
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h501_pdu_handle = find_dissector(PFNAME);
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h501_udp_handle = new_create_dissector_handle(dissect_h501_udp, proto_h501);
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h501_tcp_handle = new_create_dissector_handle(dissect_h501_tcp, proto_h501);
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h501_prefs_initialized = TRUE;
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} else {
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dissector_delete_uint("udp.port", saved_h501_udp_port, h501_udp_handle);
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dissector_delete_uint("tcp.port", saved_h501_tcp_port, h501_tcp_handle);
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}
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/* Set our port number for future use */
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saved_h501_udp_port = h501_udp_port;
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dissector_add_uint("udp.port", saved_h501_udp_port, h501_udp_handle);
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saved_h501_tcp_port = h501_tcp_port;
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dissector_add_uint("tcp.port", saved_h501_tcp_port, h501_tcp_handle);
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}
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