forked from osmocom/wireshark
191 lines
6.6 KiB
C
191 lines
6.6 KiB
C
/* packet-m2ap.c
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* Routines for M2 Application Protocol packet dissection
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* Copyright 2016, Pascal Quantin <pascal.quantin@gmail.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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* Reference: 3GPP TS 36.443 v13.3.0
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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/sctpppids.h>
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#include <epan/asn1.h>
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#include <epan/expert.h>
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#include "packet-per.h"
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#include "packet-e212.h"
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#define PNAME "M2 Application Protocol"
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#define PSNAME "M2AP"
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#define PFNAME "m2ap"
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void proto_register_m2ap(void);
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void proto_reg_handoff_m2ap(void);
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/* M2AP uses port 36443 as recommended by IANA. */
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#define M2AP_PORT 36443
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#include "packet-m2ap-val.h"
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/* Initialize the protocol and registered fields */
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static int proto_m2ap = -1;
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static int hf_m2ap_IPAddress_v4 = -1;
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static int hf_m2ap_IPAddress_v6 = -1;
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#include "packet-m2ap-hf.c"
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/* Initialize the subtree pointers */
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static int ett_m2ap = -1;
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static int ett_m2ap_PLMN_Identity = -1;
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#include "packet-m2ap-ett.c"
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static expert_field ei_m2ap_invalid_ip_address_len = EI_INIT;
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enum{
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INITIATING_MESSAGE,
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SUCCESSFUL_OUTCOME,
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UNSUCCESSFUL_OUTCOME
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};
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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 guint32 message_type;
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/* Dissector tables */
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static dissector_table_t m2ap_ies_dissector_table;
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static dissector_table_t m2ap_extension_dissector_table;
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static dissector_table_t m2ap_proc_imsg_dissector_table;
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static dissector_table_t m2ap_proc_sout_dissector_table;
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static dissector_table_t m2ap_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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#include "packet-m2ap-fn.c"
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static int
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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(m2ap_ies_dissector_table, ProtocolIE_ID, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
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}
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static int
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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(m2ap_extension_dissector_table, ProtocolIE_ID, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
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}
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static int
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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(m2ap_proc_imsg_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_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(m2ap_proc_sout_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_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(m2ap_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_m2ap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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{
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proto_item *m2ap_item = NULL;
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proto_tree *m2ap_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, PSNAME);
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m2ap_item = proto_tree_add_item(tree, proto_m2ap, tvb, 0, -1, ENC_NA);
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m2ap_tree = proto_item_add_subtree(m2ap_item, ett_m2ap);
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dissect_M2AP_PDU_PDU(tvb, pinfo, m2ap_tree, NULL);
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return tvb_captured_length(tvb);
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}
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void
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proto_register_m2ap(void) {
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/* List of fields */
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static hf_register_info hf[] = {
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{ &hf_m2ap_IPAddress_v4,
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{ "IPAddress", "m2ap.IPAddress_v4",
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FT_IPv4, BASE_NONE, NULL, 0,
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NULL, HFILL }
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},
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{ &hf_m2ap_IPAddress_v6,
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{ "IPAddress", "m2ap.IPAddress_v6",
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FT_IPv6, BASE_NONE, NULL, 0,
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NULL, HFILL }
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},
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#include "packet-m2ap-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_m2ap,
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&ett_m2ap_PLMN_Identity,
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#include "packet-m2ap-ettarr.c"
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};
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expert_module_t* expert_m2ap;
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static ei_register_info ei[] = {
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{ &ei_m2ap_invalid_ip_address_len, { "m2ap.invalid_ip_address_len", PI_MALFORMED, PI_ERROR, "Invalid IP address length", EXPFILL }}
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};
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/* Register protocol */
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proto_m2ap = proto_register_protocol(PNAME, PSNAME, PFNAME);
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/* Register fields and subtrees */
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proto_register_field_array(proto_m2ap, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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expert_m2ap = expert_register_protocol(proto_m2ap);
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expert_register_field_array(expert_m2ap, ei, array_length(ei));
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/* Register dissector tables */
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m2ap_ies_dissector_table = register_dissector_table("m2ap.ies", "M2AP-PROTOCOL-IES", proto_m2ap, FT_UINT32, BASE_DEC);
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m2ap_extension_dissector_table = register_dissector_table("m2ap.extension", "M2AP-PROTOCOL-EXTENSION", proto_m2ap, FT_UINT32, BASE_DEC);
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m2ap_proc_imsg_dissector_table = register_dissector_table("m2ap.proc.imsg", "M2AP-ELEMENTARY-PROCEDURE InitiatingMessage", proto_m2ap, FT_UINT32, BASE_DEC);
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m2ap_proc_sout_dissector_table = register_dissector_table("m2ap.proc.sout", "M2AP-ELEMENTARY-PROCEDURE SuccessfulOutcome", proto_m2ap, FT_UINT32, BASE_DEC);
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m2ap_proc_uout_dissector_table = register_dissector_table("m2ap.proc.uout", "M2AP-ELEMENTARY-PROCEDURE UnsuccessfulOutcome", proto_m2ap, FT_UINT32, BASE_DEC);
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}
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void
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proto_reg_handoff_m2ap(void)
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{
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dissector_handle_t m2ap_handle = create_dissector_handle(dissect_m2ap, proto_m2ap);
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dissector_add_uint("sctp.ppi", PROTO_3GPP_M2AP_PROTOCOL_ID, m2ap_handle);
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dissector_add_uint("sctp.port", M2AP_PORT, m2ap_handle);
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#include "packet-m2ap-dis-tab.c"
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}
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