forked from osmocom/wireshark
213 lines
7.6 KiB
C
213 lines
7.6 KiB
C
/* packet-x2ap.c
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* Routines for dissecting Evolved Universal Terrestrial Radio Access Network (EUTRAN);
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* X2 Application Protocol (X2AP);
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* 3GPP TS 36.423 packet dissection
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* Copyright 2007-2010, Anders Broman <anders.broman@ericsson.com>
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Ref:
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* 3GPP TS 36.423 V9.2.0 (2010-03)
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/asn1.h>
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#include <epan/prefs.h>
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#include <epan/sctpppids.h>
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#include "packet-per.h"
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#include "packet-e212.h"
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#include "packet-lte-rrc.h"
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#ifdef _MSC_VER
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/* disable: "warning C4146: unary minus operator applied to unsigned type, result still unsigned" */
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#pragma warning(disable:4146)
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#endif
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#define PNAME "EUTRAN X2 Application Protocol (X2AP)"
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#define PSNAME "X2AP"
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#define PFNAME "x2ap"
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void proto_register_x2ap(void);
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/* Dissector will use SCTP PPID 27 or SCTP port. IANA assigned port = 36422 */
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#define SCTP_PORT_X2AP 36422
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#include "packet-x2ap-val.h"
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/* Initialize the protocol and registered fields */
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static int proto_x2ap = -1;
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static int hf_x2ap_transportLayerAddressIPv4 = -1;
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static int hf_x2ap_transportLayerAddressIPv6 = -1;
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#include "packet-x2ap-hf.c"
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/* Initialize the subtree pointers */
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static int ett_x2ap = -1;
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static int ett_x2ap_TransportLayerAddress = -1;
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#include "packet-x2ap-ett.c"
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/* Global variables */
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static guint32 ProcedureCode;
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static guint32 ProtocolIE_ID;
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static guint gbl_x2apSctpPort=SCTP_PORT_X2AP;
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/* Dissector tables */
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static dissector_table_t x2ap_ies_dissector_table;
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static dissector_table_t x2ap_extension_dissector_table;
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static dissector_table_t x2ap_proc_imsg_dissector_table;
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static dissector_table_t x2ap_proc_sout_dissector_table;
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static dissector_table_t x2ap_proc_uout_dissector_table;
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static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
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static int dissect_ProtocolExtensionFieldExtensionValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
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static int dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
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static int dissect_SuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
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static int dissect_UnsuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
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void proto_reg_handoff_x2ap(void);
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static dissector_handle_t x2ap_handle;
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#include "packet-x2ap-fn.c"
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static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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return (dissector_try_uint(x2ap_ies_dissector_table, ProtocolIE_ID, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
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}
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static int dissect_ProtocolExtensionFieldExtensionValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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return (dissector_try_uint(x2ap_extension_dissector_table, ProtocolIE_ID, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
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}
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static int dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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return (dissector_try_uint(x2ap_proc_imsg_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
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}
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static int dissect_SuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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return (dissector_try_uint(x2ap_proc_sout_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
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}
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static int dissect_UnsuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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return (dissector_try_uint(x2ap_proc_uout_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
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}
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static int
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dissect_x2ap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
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{
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proto_item *x2ap_item = NULL;
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proto_tree *x2ap_tree = NULL;
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/* make entry in the Protocol column on summary display */
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "X2AP");
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/* create the x2ap protocol tree */
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x2ap_item = proto_tree_add_item(tree, proto_x2ap, tvb, 0, -1, ENC_NA);
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x2ap_tree = proto_item_add_subtree(x2ap_item, ett_x2ap);
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return dissect_X2AP_PDU_PDU(tvb, pinfo, x2ap_tree, data);
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}
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/*--- proto_register_x2ap -------------------------------------------*/
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void proto_register_x2ap(void) {
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/* List of fields */
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static hf_register_info hf[] = {
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{ &hf_x2ap_transportLayerAddressIPv4,
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{ "transportLayerAddress(IPv4)", "x2ap.transportLayerAddressIPv4",
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FT_IPv4, BASE_NONE, NULL, 0,
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NULL, HFILL }},
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{ &hf_x2ap_transportLayerAddressIPv6,
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{ "transportLayerAddress(IPv6)", "x2ap.transportLayerAddressIPv6",
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FT_IPv6, BASE_NONE, NULL, 0,
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NULL, HFILL }},
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#include "packet-x2ap-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_x2ap,
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&ett_x2ap_TransportLayerAddress,
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#include "packet-x2ap-ettarr.c"
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};
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module_t *x2ap_module;
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/* Register protocol */
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proto_x2ap = proto_register_protocol(PNAME, PSNAME, PFNAME);
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/* Register fields and subtrees */
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proto_register_field_array(proto_x2ap, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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/* Register dissector */
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x2ap_handle = register_dissector("x2ap", dissect_x2ap, proto_x2ap);
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/* Register dissector tables */
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x2ap_ies_dissector_table = register_dissector_table("x2ap.ies", "X2AP-PROTOCOL-IES", proto_x2ap, FT_UINT32, BASE_DEC);
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x2ap_extension_dissector_table = register_dissector_table("x2ap.extension", "X2AP-PROTOCOL-EXTENSION", proto_x2ap, FT_UINT32, BASE_DEC);
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x2ap_proc_imsg_dissector_table = register_dissector_table("x2ap.proc.imsg", "X2AP-ELEMENTARY-PROCEDURE InitiatingMessage", proto_x2ap, FT_UINT32, BASE_DEC);
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x2ap_proc_sout_dissector_table = register_dissector_table("x2ap.proc.sout", "X2AP-ELEMENTARY-PROCEDURE SuccessfulOutcome", proto_x2ap, FT_UINT32, BASE_DEC);
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x2ap_proc_uout_dissector_table = register_dissector_table("x2ap.proc.uout", "X2AP-ELEMENTARY-PROCEDURE UnsuccessfulOutcome", proto_x2ap, FT_UINT32, BASE_DEC);
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/* Register configuration options for ports */
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x2ap_module = prefs_register_protocol(proto_x2ap, proto_reg_handoff_x2ap);
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prefs_register_uint_preference(x2ap_module, "sctp.port",
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"X2AP SCTP Port",
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"Set the SCTP port for X2AP messages",
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10,
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&gbl_x2apSctpPort);
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}
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/*--- proto_reg_handoff_x2ap ---------------------------------------*/
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void
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proto_reg_handoff_x2ap(void)
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{
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static gboolean Initialized=FALSE;
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static guint SctpPort;
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if (!Initialized) {
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dissector_add_for_decode_as("sctp.port", x2ap_handle);
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dissector_add_uint("sctp.ppi", X2AP_PAYLOAD_PROTOCOL_ID, x2ap_handle);
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Initialized=TRUE;
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#include "packet-x2ap-dis-tab.c"
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} else {
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if (SctpPort != 0) {
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dissector_delete_uint("sctp.port", SctpPort, x2ap_handle);
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}
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}
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SctpPort=gbl_x2apSctpPort;
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if (SctpPort != 0) {
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dissector_add_uint("sctp.port", SctpPort, x2ap_handle);
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}
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}
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