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/* packet-x2ap.c
* Routines for dissecting Evolved Universal Terrestrial Radio Access Network (EUTRAN);
* X2 Application Protocol (X2AP);
* 3GPP TS 36.423 packet dissection
* Copyright 2007-2010, Anders Broman <anders.broman@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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Ref:
* 3GPP TS 36.423 V9.2.0 (2010-03)
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <glib.h>
#include <epan/packet.h>
#include <epan/asn1.h>
#include <epan/prefs.h>
#include <epan/sctpppids.h>
#include "packet-per.h"
#include "packet-e212.h"
#include "packet-frame.h"
#include "packet-lte-rrc.h"
#ifdef _MSC_VER
/* disable: "warning C4146: unary minus operator applied to unsigned type, result still unsigned" */
#pragma warning(disable:4146)
#endif
#define PNAME "EUTRAN X2 Application Protocol (X2AP)"
#define PSNAME "X2AP"
#define PFNAME "x2ap"
/* Dissector will use SCTP PPID 27 or SCTP port. IANA assigned port = 36422 */
#define SCTP_PORT_X2AP 36422
#include "packet-x2ap-val.h"
/* Initialize the protocol and registered fields */
static int proto_x2ap = -1;
static int hf_x2ap_transportLayerAddressIPv4 = -1;
static int hf_x2ap_transportLayerAddressIPv6 = -1;
#include "packet-x2ap-hf.c"
/* Initialize the subtree pointers */
static int ett_x2ap = -1;
static int ett_x2ap_TransportLayerAddress = -1;
#include "packet-x2ap-ett.c"
/* Global variables */
static guint32 ProcedureCode;
static guint32 ProtocolIE_ID;
static guint gbl_x2apSctpPort=SCTP_PORT_X2AP;
/* Dissector tables */
static dissector_table_t x2ap_ies_dissector_table;
static dissector_table_t x2ap_extension_dissector_table;
static dissector_table_t x2ap_proc_imsg_dissector_table;
static dissector_table_t x2ap_proc_sout_dissector_table;
static dissector_table_t x2ap_proc_uout_dissector_table;
static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
static int dissect_ProtocolExtensionFieldExtensionValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
static int dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
static int dissect_SuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
static int dissect_UnsuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
void proto_reg_handoff_x2ap(void);
#include "packet-x2ap-fn.c"
static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
return (dissector_try_uint(x2ap_ies_dissector_table, ProtocolIE_ID, tvb, pinfo, tree)) ? tvb_length(tvb) : 0;
}
static int dissect_ProtocolExtensionFieldExtensionValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
return (dissector_try_uint(x2ap_extension_dissector_table, ProtocolIE_ID, tvb, pinfo, tree)) ? tvb_length(tvb) : 0;
}
static int dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
return (dissector_try_uint(x2ap_proc_imsg_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_length(tvb) : 0;
}
static int dissect_SuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
return (dissector_try_uint(x2ap_proc_sout_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_length(tvb) : 0;
}
static int dissect_UnsuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
return (dissector_try_uint(x2ap_proc_uout_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_length(tvb) : 0;
}
static void
dissect_x2ap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_item *x2ap_item = NULL;
proto_tree *x2ap_tree = NULL;
/* make entry in the Protocol column on summary display */
col_set_str(pinfo->cinfo, COL_PROTOCOL, "X2AP");
/* create the x2ap protocol tree */
x2ap_item = proto_tree_add_item(tree, proto_x2ap, tvb, 0, -1, ENC_NA);
x2ap_tree = proto_item_add_subtree(x2ap_item, ett_x2ap);
dissect_X2AP_PDU_PDU(tvb, pinfo, x2ap_tree);
}
/*--- proto_register_x2ap -------------------------------------------*/
void proto_register_x2ap(void) {
/* List of fields */
static hf_register_info hf[] = {
{ &hf_x2ap_transportLayerAddressIPv4,
{ "transportLayerAddress(IPv4)", "x2ap.transportLayerAddressIPv4",
FT_IPv4, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_x2ap_transportLayerAddressIPv6,
{ "transportLayerAddress(IPv6)", "x2ap.transportLayerAddressIPv6",
FT_IPv6, BASE_NONE, NULL, 0,
NULL, HFILL }},
#include "packet-x2ap-hfarr.c"
};
/* List of subtrees */
static gint *ett[] = {
&ett_x2ap,
&ett_x2ap_TransportLayerAddress,
#include "packet-x2ap-ettarr.c"
};
module_t *x2ap_module;
/* Register protocol */
proto_x2ap = proto_register_protocol(PNAME, PSNAME, PFNAME);
/* Register fields and subtrees */
proto_register_field_array(proto_x2ap, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
/* Register dissector */
register_dissector("x2ap", dissect_x2ap, proto_x2ap);
/* Register dissector tables */
x2ap_ies_dissector_table = register_dissector_table("x2ap.ies", "X2AP-PROTOCOL-IES", FT_UINT32, BASE_DEC);
x2ap_extension_dissector_table = register_dissector_table("x2ap.extension", "X2AP-PROTOCOL-EXTENSION", FT_UINT32, BASE_DEC);
x2ap_proc_imsg_dissector_table = register_dissector_table("x2ap.proc.imsg", "X2AP-ELEMENTARY-PROCEDURE InitiatingMessage", FT_UINT32, BASE_DEC);
x2ap_proc_sout_dissector_table = register_dissector_table("x2ap.proc.sout", "X2AP-ELEMENTARY-PROCEDURE SuccessfulOutcome", FT_UINT32, BASE_DEC);
x2ap_proc_uout_dissector_table = register_dissector_table("x2ap.proc.uout", "X2AP-ELEMENTARY-PROCEDURE UnsuccessfulOutcome", FT_UINT32, BASE_DEC);
/* Register configuration options for ports */
x2ap_module = prefs_register_protocol(proto_x2ap, proto_reg_handoff_x2ap);
prefs_register_uint_preference(x2ap_module, "sctp.port",
"X2AP SCTP Port",
"Set the SCTP port for X2AP messages",
10,
&gbl_x2apSctpPort);
}
/*--- proto_reg_handoff_x2ap ---------------------------------------*/
void
proto_reg_handoff_x2ap(void)
{
dissector_handle_t x2ap_handle;
static gboolean Initialized=FALSE;
static guint SctpPort;
x2ap_handle = find_dissector("x2ap");
if (!Initialized) {
dissector_add_handle("sctp.port", x2ap_handle); /* for "decode-as" */
dissector_add_uint("sctp.ppi", X2AP_PAYLOAD_PROTOCOL_ID, x2ap_handle);
Initialized=TRUE;
#include "packet-x2ap-dis-tab.c"
} else {
if (SctpPort != 0) {
dissector_delete_uint("sctp.port", SctpPort, x2ap_handle);
}
}
SctpPort=gbl_x2apSctpPort;
if (SctpPort != 0) {
dissector_add_uint("sctp.port", SctpPort, x2ap_handle);
}
}
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