forked from osmocom/wireshark
159 lines
4.3 KiB
C
159 lines
4.3 KiB
C
/* packet-ulp.c
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* Routines for OMA UserPlane Location Protocol packet dissection
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* Copyright 2006, Anders Broman <anders.broman@ericsson.com>
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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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* ref OMA-TS-ULP-V1_0-20060127-C
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* http://www.openmobilealliance.org
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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/asn1.h>
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#include "packet-per.h"
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#include "packet-tcp.h"
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#include "packet-gsm_map.h"
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#define PNAME "OMA UserPlane Location Protocol"
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#define PSNAME "ULP"
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#define PFNAME "ulp"
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static dissector_handle_t rrlp_handle;
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/* IANA Registered Ports
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* oma-ulp 7275/tcp OMA UserPlane Location
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* oma-ulp 7275/udp OMA UserPlane Location
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*/
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static guint gbl_ulp_port = 7275;
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/* Initialize the protocol and registered fields */
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static int proto_ulp = -1;
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#define ULP_HEADER_SIZE 2
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static gboolean ulp_desegment = TRUE;
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#include "packet-ulp-hf.c"
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/* Initialize the subtree pointers */
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static gint ett_ulp = -1;
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#include "packet-ulp-ett.c"
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/* Include constants */
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#include "packet-ulp-val.h"
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#include "packet-ulp-fn.c"
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static guint
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get_ulp_pdu_len(packet_info *pinfo _U_, tvbuff_t *tvb, int offset)
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{
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/* PDU length = Message length */
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return tvb_get_ntohs(tvb,offset);
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}
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static void
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dissect_ulp_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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tcp_dissect_pdus(tvb, pinfo, tree, ulp_desegment, ULP_HEADER_SIZE,
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get_ulp_pdu_len, dissect_ULP_PDU_PDU);
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}
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void proto_reg_handoff_ulp(void);
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/*--- proto_register_ulp -------------------------------------------*/
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void proto_register_ulp(void) {
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/* List of fields */
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static hf_register_info hf[] = {
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#include "packet-ulp-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_ulp,
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#include "packet-ulp-ettarr.c"
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};
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module_t *ulp_module;
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/* Register protocol */
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proto_ulp = proto_register_protocol(PNAME, PSNAME, PFNAME);
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register_dissector("ulp", dissect_ulp_tcp, proto_ulp);
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/* Register fields and subtrees */
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proto_register_field_array(proto_ulp, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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ulp_module = prefs_register_protocol(proto_ulp,proto_reg_handoff_ulp);
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prefs_register_bool_preference(ulp_module, "desegment_ulp_messages",
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"Reassemble ULP messages spanning multiple TCP segments",
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"Whether the ULP dissector should reassemble messages spanning multiple TCP segments."
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" To use this option, you must also enable \"Allow subdissectors to reassemble TCP streams\" in the TCP protocol settings.",
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&ulp_desegment);
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/* Register a configuration option for port */
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prefs_register_uint_preference(ulp_module, "tcp.port",
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"ULP TCP Port",
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"Set the TCP port for Ulp messages(IANA registerd port is 7275)",
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10,
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&gbl_ulp_port);
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}
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/*--- proto_reg_handoff_ulp ---------------------------------------*/
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void
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proto_reg_handoff_ulp(void)
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{
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static gboolean initialized = FALSE;
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static dissector_handle_t ulp_handle;
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static guint local_ulp_port;
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if (!initialized) {
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ulp_handle = find_dissector("ulp");
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dissector_add_string("media_type","application/oma-supl-ulp", ulp_handle);
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rrlp_handle = find_dissector("rrlp");
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initialized = TRUE;
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} else {
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dissector_delete_uint("tcp.port", local_ulp_port, ulp_handle);
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}
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local_ulp_port = gbl_ulp_port;
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dissector_add_uint("tcp.port", gbl_ulp_port, ulp_handle);
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/* application/oma-supl-ulp */
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}
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