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/* packet-diameter_3gpp.c
* Routines for dissecting 3GPP OctetSting AVP:s
* Copyright 2008, Anders Broman <anders.broman[at]ericsson.com>
*
* $Id$
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* 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.
*/
/* This dissector registers a dissector table for 3GPP Vendor specific
* AVP:s which will be called from the Diameter dissector to dissect
* the content of AVP:s of the OctetString type(or similar).
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include <epan/packet.h>
#include <epan/proto.h>
#include <epan/asn1.h>
#include "packet-gsm_map.h"
#include "packet-gsm_a_common.h"
#include "packet-e212.h"
/* Initialize the protocol and registered fields */
static int proto_diameter_3gpp = -1;
static int hf_diameter_3gpp_msisdn = -1;
static int hf_diameter_3gpp_ipaddr = -1;
static int hf_diameter_3gpp_mbms_required_qos_prio = -1;
static int hf_diameter_3gpp_tmgi = -1;
static int hf_diameter_mbms_service_id = -1;
static gint diameter_3gpp_msisdn_ett = -1;
static gint diameter_3gpp_tmgi_ett = -1;
/* Used for Diameter */
static int
dissect_diameter_3gpp_msisdn(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_) {
proto_item* item;
proto_tree *sub_tree;
int offset = 0;
item = proto_tree_add_item(tree, hf_diameter_3gpp_msisdn, tvb, offset, 6, FALSE);
sub_tree = proto_item_add_subtree(item,diameter_3gpp_msisdn_ett);
dissect_gsm_map_msisdn(tvb, pinfo, sub_tree);
return tvb_length(tvb);
}
static int
dissect_diameter_3gpp_tmgi(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_) {
proto_item* item;
proto_tree *sub_tree;
int offset = 0;
item = proto_tree_add_item(tree, hf_diameter_3gpp_tmgi, tvb, offset, 6, FALSE);
sub_tree = proto_item_add_subtree(item,diameter_3gpp_tmgi_ett);
/* MBMS Service ID consisting of three octets. MBMS Service ID consists of a 6-digit
* fixed-length hexadecimal number between 000000 and FFFFFF.
* MBMS Service ID uniquely identifies an MBMS bearer service within a PLMN.
*/
proto_tree_add_item(sub_tree, hf_diameter_mbms_service_id, tvb, offset, 3, FALSE);
offset = offset+3;
offset = dissect_e212_mcc_mnc(tvb,sub_tree, offset);
return offset;
}
static int
dissect_diameter_3gpp_ipaddr(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_) {
int offset = 0;
proto_tree_add_item(tree, hf_diameter_3gpp_ipaddr, tvb, offset, 4, FALSE);
offset += 4;
return offset;
}
static int
dissect_diameter_3gpp_mbms_required_qos(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_) {
int offset = 0;
guint length;
/* Octet
* 1 Allocation/Retention Priority as specified in 3GPP TS 23.107.
* This octet encodes each priority level defined in 3GPP TS 23.107
* as the binary value of the priority level. It specifies the relative
* importance of the actual MBMS bearer service compared to other MBMS
* and non-MBMS bearer services for allocation and retention of the
* MBMS bearer service.
* 2-N QoS Profile as specified by the Quality-of-Service information element,
* from octet 3 onwards, in 3GPP TS 24.008
*/
proto_tree_add_item(tree, hf_diameter_3gpp_mbms_required_qos_prio, tvb, offset, 1, FALSE);
offset++;
length = tvb_length(tvb) - 1;
de_sm_qos(tvb, tree, offset, length, NULL, 0);
return offset+length;
}
void
proto_reg_handoff_diameter_3gpp(void)
{
/* AVP Code: 701 MSISDN */
dissector_add("diameter.3gpp", 701, new_create_dissector_handle(dissect_diameter_3gpp_msisdn, proto_diameter_3gpp));
/* AVP Code: 900 TMGI */
dissector_add("diameter.3gpp", 900, new_create_dissector_handle(dissect_diameter_3gpp_tmgi, proto_diameter_3gpp));
/* AVP Code: 918 MBMS-BMSC-SSM-IP-Address */
dissector_add("diameter.3gpp", 918, new_create_dissector_handle(dissect_diameter_3gpp_ipaddr, proto_diameter_3gpp));
/* AVP Code: 913 MBMS-Required-QoS */
dissector_add("diameter.3gpp", 913, new_create_dissector_handle(dissect_diameter_3gpp_mbms_required_qos, proto_diameter_3gpp));
}
void
proto_register_diameter_3gpp(void)
{
/* Setup list of header fields See Section 1.6.1 for details*/
static hf_register_info hf[] = {
{ &hf_diameter_3gpp_msisdn,
{ "MSISDN", "diameter.3gpp.msisdn",
FT_BYTES, BASE_HEX, NULL, 0x0,
"MSISDN", HFILL }
},
{ &hf_diameter_3gpp_ipaddr,
{ "IPv4 Address", "diameter.3gpp.ipaddr",
FT_IPv4, BASE_DEC, NULL, 0x0,
"IPv4 Address", HFILL }
},
{ &hf_diameter_3gpp_mbms_required_qos_prio,
{ "Allocation/Retention Priority", "diameter.3gpp.mbms_required_qos_prio",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Allocation/Retention Priority", HFILL }
},
{ &hf_diameter_3gpp_tmgi,
{ "TMGI", "diameter.3gpp.tmgi",
FT_BYTES, BASE_HEX, NULL, 0x0,
"TMGI", HFILL }
},
{ &hf_diameter_mbms_service_id,
{ "MBMS Service ID", "diameter.3gpp.mbms_service_id",
FT_UINT24, BASE_HEX, NULL, 0x0,
"MBMS Service ID", HFILL }
},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&diameter_3gpp_msisdn_ett,
&diameter_3gpp_tmgi_ett,
};
/* Required function calls to register the header fields and subtrees used */
proto_diameter_3gpp = proto_register_protocol("Diameter 3GPP","Diameter3GPP", "diameter3gpp");
proto_register_field_array(proto_diameter_3gpp, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
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