forked from osmocom/wireshark
269 lines
9.7 KiB
C
269 lines
9.7 KiB
C
/* packet-s1ap.c
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* Routines for E-UTRAN S1 Application Protocol (S1AP) packet dissection
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* Copyright 2007-2010, 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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* Based on the RANAP dissector
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*
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* References: 3GPP TS 36.413 V9.2.0 (2010-03)
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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 <ctype.h>
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#include <epan/strutil.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-ber.h"
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#include "packet-per.h"
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#include "packet-e212.h"
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#include "packet-sccp.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 "S1 Application Protocol"
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#define PSNAME "S1AP"
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#define PFNAME "s1ap"
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/* Dissector will use SCTP PPID 18 or SCTP port. IANA assigned port = 36412 */
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#define SCTP_PORT_S1AP 36412
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static dissector_handle_t nas_eps_handle;
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#include "packet-s1ap-val.h"
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/* Initialize the protocol and registered fields */
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static int proto_s1ap = -1;
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static int hf_s1ap_transportLayerAddressIPv4 = -1;
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static int hf_s1ap_transportLayerAddressIPv6 = -1;
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#include "packet-s1ap-hf.c"
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/* Initialize the subtree pointers */
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static int ett_s1ap = -1;
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static int ett_s1ap_TransportLayerAddress = -1;
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static int ett_s1ap_ToTargetTransparentContainer = -1;
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static int ett_s1ap_ToSourceTransparentContainer = -1;
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static int ett_s1ap_RRCContainer = -1;
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static int ett_s1ap_UERadioCapability = -1;
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#include "packet-s1ap-ett.c"
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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 ProtocolExtensionID;
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static guint gbl_s1apSctpPort=SCTP_PORT_S1AP;
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static guint32 handover_type_value;
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static guint32 message_type;
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/* Dissector tables */
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static dissector_table_t s1ap_ies_dissector_table;
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static dissector_table_t s1ap_ies_p1_dissector_table;
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static dissector_table_t s1ap_ies_p2_dissector_table;
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static dissector_table_t s1ap_extension_dissector_table;
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static dissector_table_t s1ap_proc_imsg_dissector_table;
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static dissector_table_t s1ap_proc_sout_dissector_table;
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static dissector_table_t s1ap_proc_uout_dissector_table;
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static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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/* Currently not used
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static int dissect_ProtocolIEFieldPairFirstValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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static int dissect_ProtocolIEFieldPairSecondValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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*/
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static int dissect_ProtocolExtensionFieldExtensionValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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static int dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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static int dissect_SuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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static int dissect_UnsuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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static int dissect_SourceeNB_ToTargeteNB_TransparentContainer_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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static int dissect_TargeteNB_ToSourceeNB_TransparentContainer_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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static int dissect_SourceRNC_ToTargetRNC_TransparentContainer_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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static int dissect_TargetRNC_ToSourceRNC_TransparentContainer_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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static int dissect_SourceBSS_ToTargetBSS_TransparentContainer_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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static int dissect_TargetBSS_ToSourceBSS_TransparentContainer_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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#include "packet-s1ap-fn.c"
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static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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return (dissector_try_uint(s1ap_ies_dissector_table, ProtocolIE_ID, tvb, pinfo, tree)) ? tvb_length(tvb) : 0;
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}
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/* Currently not used
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static int dissect_ProtocolIEFieldPairFirstValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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return (dissector_try_uint(s1ap_ies_p1_dissector_table, ProtocolIE_ID, tvb, pinfo, tree)) ? tvb_length(tvb) : 0;
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}
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static int dissect_ProtocolIEFieldPairSecondValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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return (dissector_try_uint(s1ap_ies_p2_dissector_table, ProtocolIE_ID, tvb, pinfo, tree)) ? tvb_length(tvb) : 0;
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}
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*/
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static int dissect_ProtocolExtensionFieldExtensionValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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return (dissector_try_uint(s1ap_extension_dissector_table, ProtocolExtensionID, tvb, pinfo, tree)) ? tvb_length(tvb) : 0;
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}
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static int dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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return (dissector_try_uint(s1ap_proc_imsg_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_length(tvb) : 0;
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}
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static int dissect_SuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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return (dissector_try_uint(s1ap_proc_sout_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_length(tvb) : 0;
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}
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static int dissect_UnsuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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return (dissector_try_uint(s1ap_proc_uout_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_length(tvb) : 0;
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}
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static void
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dissect_s1ap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_item *s1ap_item = NULL;
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proto_tree *s1ap_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, "S1AP");
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/* create the s1ap protocol tree */
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s1ap_item = proto_tree_add_item(tree, proto_s1ap, tvb, 0, -1, FALSE);
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s1ap_tree = proto_item_add_subtree(s1ap_item, ett_s1ap);
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dissect_S1AP_PDU_PDU(tvb, pinfo, s1ap_tree);
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}
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/*--- proto_reg_handoff_s1ap ---------------------------------------*/
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void
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proto_reg_handoff_s1ap(void)
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{
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static gboolean Initialized=FALSE;
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static dissector_handle_t s1ap_handle;
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static guint SctpPort;
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s1ap_handle = find_dissector("s1ap");
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if (!Initialized) {
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nas_eps_handle = find_dissector("nas-eps");
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dissector_add_handle("sctp.port", s1ap_handle); /* for "decode-as" */
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dissector_add_uint("sctp.ppi", S1AP_PAYLOAD_PROTOCOL_ID, s1ap_handle);
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Initialized=TRUE;
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#include "packet-s1ap-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, s1ap_handle);
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}
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}
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SctpPort=gbl_s1apSctpPort;
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if (SctpPort != 0) {
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dissector_add_uint("sctp.port", SctpPort, s1ap_handle);
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}
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}
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/*--- proto_register_s1ap -------------------------------------------*/
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void proto_register_s1ap(void) {
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/* List of fields */
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static hf_register_info hf[] = {
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{ &hf_s1ap_transportLayerAddressIPv4,
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{ "transportLayerAddress(IPv4)", "s1ap.transportLayerAddressIPv4",
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FT_IPv4, BASE_NONE, NULL, 0,
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NULL, HFILL }},
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{ &hf_s1ap_transportLayerAddressIPv6,
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{ "transportLayerAddress(IPv6)", "s1ap.transportLayerAddressIPv6",
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FT_IPv4, BASE_NONE, NULL, 0,
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NULL, HFILL }},
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#include "packet-s1ap-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_s1ap,
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&ett_s1ap_TransportLayerAddress,
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&ett_s1ap_ToTargetTransparentContainer,
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&ett_s1ap_ToSourceTransparentContainer,
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&ett_s1ap_RRCContainer,
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&ett_s1ap_UERadioCapability,
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#include "packet-s1ap-ettarr.c"
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};
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module_t *s1ap_module;
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/* Register protocol */
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proto_s1ap = proto_register_protocol(PNAME, PSNAME, PFNAME);
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/* Register fields and subtrees */
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proto_register_field_array(proto_s1ap, 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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register_dissector("s1ap", dissect_s1ap, proto_s1ap);
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/* Register dissector tables */
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s1ap_ies_dissector_table = register_dissector_table("s1ap.ies", "S1AP-PROTOCOL-IES", FT_UINT32, BASE_DEC);
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s1ap_ies_p1_dissector_table = register_dissector_table("s1ap.ies.pair.first", "S1AP-PROTOCOL-IES-PAIR FirstValue", FT_UINT32, BASE_DEC);
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s1ap_ies_p2_dissector_table = register_dissector_table("s1ap.ies.pair.second", "S1AP-PROTOCOL-IES-PAIR SecondValue", FT_UINT32, BASE_DEC);
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s1ap_extension_dissector_table = register_dissector_table("s1ap.extension", "S1AP-PROTOCOL-EXTENSION", FT_UINT32, BASE_DEC);
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s1ap_proc_imsg_dissector_table = register_dissector_table("s1ap.proc.imsg", "S1AP-ELEMENTARY-PROCEDURE InitiatingMessage", FT_UINT32, BASE_DEC);
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s1ap_proc_sout_dissector_table = register_dissector_table("s1ap.proc.sout", "S1AP-ELEMENTARY-PROCEDURE SuccessfulOutcome", FT_UINT32, BASE_DEC);
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s1ap_proc_uout_dissector_table = register_dissector_table("s1ap.proc.uout", "S1AP-ELEMENTARY-PROCEDURE UnsuccessfulOutcome", FT_UINT32, BASE_DEC);
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/* Register configuration options for ports */
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s1ap_module = prefs_register_protocol(proto_s1ap, proto_reg_handoff_s1ap);
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prefs_register_uint_preference(s1ap_module, "sctp.port",
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"S1AP SCTP Port",
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"Set the SCTP port for S1AP messages",
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10,
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&gbl_s1apSctpPort);
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}
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