forked from osmocom/wireshark
314 lines
12 KiB
C
314 lines
12 KiB
C
/* packet-s1ap.c
|
|
* Routines for E-UTRAN S1 Application Protocol (S1AP) packet dissection
|
|
* Copyright 2007-2010, Anders Broman <anders.broman@ericsson.com>
|
|
*
|
|
* 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.
|
|
*
|
|
* Based on the RANAP dissector
|
|
*
|
|
* References: 3GPP TS 36.413 V9.2.0 (2010-03)
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <epan/packet.h>
|
|
|
|
#include <epan/strutil.h>
|
|
#include <epan/asn1.h>
|
|
#include <epan/prefs.h>
|
|
#include <epan/sctpppids.h>
|
|
|
|
#include "packet-ber.h"
|
|
#include "packet-per.h"
|
|
#include "packet-e212.h"
|
|
#include "packet-sccp.h"
|
|
#include "packet-lte-rrc.h"
|
|
#include "packet-ranap.h"
|
|
#include "packet-bssgp.h"
|
|
#include "packet-s1ap.h"
|
|
#include "packet-a21.h"
|
|
|
|
#ifdef _MSC_VER
|
|
/* disable: "warning C4146: unary minus operator applied to unsigned type, result still unsigned" */
|
|
#pragma warning(disable:4146)
|
|
#endif
|
|
|
|
#define PNAME "S1 Application Protocol"
|
|
#define PSNAME "S1AP"
|
|
#define PFNAME "s1ap"
|
|
|
|
/* Dissector will use SCTP PPID 18 or SCTP port. IANA assigned port = 36412 */
|
|
#define SCTP_PORT_S1AP 36412
|
|
|
|
void proto_register_s1ap(void);
|
|
void proto_reg_handoff_s1ap(void);
|
|
|
|
static dissector_handle_t nas_eps_handle;
|
|
static dissector_handle_t lppa_handle;
|
|
static dissector_handle_t bssgp_handle;
|
|
|
|
#include "packet-s1ap-val.h"
|
|
|
|
/* Initialize the protocol and registered fields */
|
|
static int proto_s1ap = -1;
|
|
|
|
static int hf_s1ap_transportLayerAddressIPv4 = -1;
|
|
static int hf_s1ap_transportLayerAddressIPv6 = -1;
|
|
#include "packet-s1ap-hf.c"
|
|
|
|
/* Initialize the subtree pointers */
|
|
static int ett_s1ap = -1;
|
|
static int ett_s1ap_TransportLayerAddress = -1;
|
|
static int ett_s1ap_ToTargetTransparentContainer = -1;
|
|
static int ett_s1ap_ToSourceTransparentContainer = -1;
|
|
static int ett_s1ap_RRCContainer = -1;
|
|
static int ett_s1ap_UERadioCapability = -1;
|
|
static int ett_s1ap_RIMInformation = -1;
|
|
static int ett_s1ap_Cdma2000PDU = -1;
|
|
static int ett_s1ap_Cdma2000SectorID = -1;
|
|
static int ett_s1ap_UERadioPagingInformation = -1;
|
|
|
|
#include "packet-s1ap-ett.c"
|
|
|
|
enum{
|
|
INITIATING_MESSAGE,
|
|
SUCCESSFUL_OUTCOME,
|
|
UNSUCCESSFUL_OUTCOME
|
|
};
|
|
|
|
|
|
/* Global variables */
|
|
static guint32 ProcedureCode;
|
|
static guint32 ProtocolIE_ID;
|
|
static guint32 ProtocolExtensionID;
|
|
static guint gbl_s1apSctpPort=SCTP_PORT_S1AP;
|
|
static guint32 handover_type_value;
|
|
static guint32 message_type;
|
|
static gboolean g_s1ap_dissect_container = TRUE;
|
|
static const char *obj_id = NULL;
|
|
|
|
static dissector_handle_t gcsna_handle = NULL;
|
|
static dissector_handle_t s1ap_handle;
|
|
|
|
|
|
/* Dissector tables */
|
|
static dissector_table_t s1ap_ies_dissector_table;
|
|
static dissector_table_t s1ap_ies_p1_dissector_table;
|
|
static dissector_table_t s1ap_ies_p2_dissector_table;
|
|
static dissector_table_t s1ap_extension_dissector_table;
|
|
static dissector_table_t s1ap_proc_imsg_dissector_table;
|
|
static dissector_table_t s1ap_proc_sout_dissector_table;
|
|
static dissector_table_t s1ap_proc_uout_dissector_table;
|
|
|
|
static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
|
|
/* Currently not used
|
|
static int dissect_ProtocolIEFieldPairFirstValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
|
|
static int dissect_ProtocolIEFieldPairSecondValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
|
|
*/
|
|
static int dissect_ProtocolExtensionFieldExtensionValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
|
|
static int dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
|
|
static int dissect_SuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
|
|
static int dissect_UnsuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
|
|
|
|
static int dissect_SourceeNB_ToTargeteNB_TransparentContainer_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
|
|
static int dissect_TargeteNB_ToSourceeNB_TransparentContainer_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
|
|
#if 0
|
|
static int dissect_SourceRNC_ToTargetRNC_TransparentContainer_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
|
|
static int dissect_TargetRNC_ToSourceRNC_TransparentContainer_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
|
|
static int dissect_SourceBSS_ToTargetBSS_TransparentContainer_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
|
|
static int dissect_TargetBSS_ToSourceBSS_TransparentContainer_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
|
|
#endif
|
|
|
|
#include "packet-s1ap-fn.c"
|
|
|
|
static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
|
|
{
|
|
s1ap_ctx_t s1ap_ctx;
|
|
|
|
s1ap_ctx.message_type = message_type;
|
|
s1ap_ctx.ProcedureCode = ProcedureCode;
|
|
s1ap_ctx.ProtocolIE_ID = ProtocolIE_ID;
|
|
s1ap_ctx.ProtocolExtensionID = ProtocolExtensionID;
|
|
|
|
return (dissector_try_uint_new(s1ap_ies_dissector_table, ProtocolIE_ID, tvb, pinfo, tree, TRUE, &s1ap_ctx)) ? tvb_captured_length(tvb) : 0;
|
|
}
|
|
/* Currently not used
|
|
static int dissect_ProtocolIEFieldPairFirstValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
return (dissector_try_uint(s1ap_ies_p1_dissector_table, ProtocolIE_ID, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
|
|
}
|
|
|
|
static int dissect_ProtocolIEFieldPairSecondValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
return (dissector_try_uint(s1ap_ies_p2_dissector_table, ProtocolIE_ID, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
|
|
}
|
|
*/
|
|
|
|
static int dissect_ProtocolExtensionFieldExtensionValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
|
|
{
|
|
s1ap_ctx_t s1ap_ctx;
|
|
|
|
s1ap_ctx.message_type = message_type;
|
|
s1ap_ctx.ProcedureCode = ProcedureCode;
|
|
s1ap_ctx.ProtocolIE_ID = ProtocolIE_ID;
|
|
s1ap_ctx.ProtocolExtensionID = ProtocolExtensionID;
|
|
|
|
return (dissector_try_uint_new(s1ap_extension_dissector_table, ProtocolExtensionID, tvb, pinfo, tree, TRUE, &s1ap_ctx)) ? tvb_captured_length(tvb) : 0;
|
|
}
|
|
|
|
static int dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
|
|
{
|
|
return (dissector_try_uint_new(s1ap_proc_imsg_dissector_table, ProcedureCode, tvb, pinfo, tree, TRUE, data)) ? tvb_captured_length(tvb) : 0;
|
|
}
|
|
|
|
static int dissect_SuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
|
|
{
|
|
return (dissector_try_uint_new(s1ap_proc_sout_dissector_table, ProcedureCode, tvb, pinfo, tree, TRUE, data)) ? tvb_captured_length(tvb) : 0;
|
|
}
|
|
|
|
static int dissect_UnsuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
|
|
{
|
|
return (dissector_try_uint_new(s1ap_proc_uout_dissector_table, ProcedureCode, tvb, pinfo, tree, TRUE, data)) ? tvb_captured_length(tvb) : 0;
|
|
}
|
|
|
|
|
|
static int
|
|
dissect_s1ap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
|
|
{
|
|
proto_item *s1ap_item = NULL;
|
|
proto_tree *s1ap_tree = NULL;
|
|
|
|
/* make entry in the Protocol column on summary display */
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "S1AP");
|
|
|
|
/* create the s1ap protocol tree */
|
|
s1ap_item = proto_tree_add_item(tree, proto_s1ap, tvb, 0, -1, ENC_NA);
|
|
s1ap_tree = proto_item_add_subtree(s1ap_item, ett_s1ap);
|
|
|
|
dissect_S1AP_PDU_PDU(tvb, pinfo, s1ap_tree, NULL);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
/*--- proto_reg_handoff_s1ap ---------------------------------------*/
|
|
void
|
|
proto_reg_handoff_s1ap(void)
|
|
{
|
|
static gboolean Initialized=FALSE;
|
|
static guint SctpPort;
|
|
|
|
gcsna_handle = find_dissector_add_dependency("gcsna", proto_s1ap);
|
|
|
|
if (!Initialized) {
|
|
nas_eps_handle = find_dissector_add_dependency("nas-eps", proto_s1ap);
|
|
lppa_handle = find_dissector_add_dependency("lppa", proto_s1ap);
|
|
bssgp_handle = find_dissector_add_dependency("bssgp", proto_s1ap);
|
|
dissector_add_for_decode_as("sctp.port", s1ap_handle);
|
|
dissector_add_uint("sctp.ppi", S1AP_PAYLOAD_PROTOCOL_ID, s1ap_handle);
|
|
Initialized=TRUE;
|
|
#include "packet-s1ap-dis-tab.c"
|
|
} else {
|
|
if (SctpPort != 0) {
|
|
dissector_delete_uint("sctp.port", SctpPort, s1ap_handle);
|
|
}
|
|
}
|
|
|
|
SctpPort=gbl_s1apSctpPort;
|
|
if (SctpPort != 0) {
|
|
dissector_add_uint("sctp.port", SctpPort, s1ap_handle);
|
|
}
|
|
}
|
|
|
|
/*--- proto_register_s1ap -------------------------------------------*/
|
|
void proto_register_s1ap(void) {
|
|
|
|
/* List of fields */
|
|
|
|
static hf_register_info hf[] = {
|
|
{ &hf_s1ap_transportLayerAddressIPv4,
|
|
{ "transportLayerAddress(IPv4)", "s1ap.transportLayerAddressIPv4",
|
|
FT_IPv4, BASE_NONE, NULL, 0,
|
|
NULL, HFILL }},
|
|
{ &hf_s1ap_transportLayerAddressIPv6,
|
|
{ "transportLayerAddress(IPv6)", "s1ap.transportLayerAddressIPv6",
|
|
FT_IPv6, BASE_NONE, NULL, 0,
|
|
NULL, HFILL }},
|
|
|
|
#include "packet-s1ap-hfarr.c"
|
|
};
|
|
|
|
/* List of subtrees */
|
|
static gint *ett[] = {
|
|
&ett_s1ap,
|
|
&ett_s1ap_TransportLayerAddress,
|
|
&ett_s1ap_ToTargetTransparentContainer,
|
|
&ett_s1ap_ToSourceTransparentContainer,
|
|
&ett_s1ap_RRCContainer,
|
|
&ett_s1ap_UERadioCapability,
|
|
&ett_s1ap_RIMInformation,
|
|
&ett_s1ap_Cdma2000PDU,
|
|
&ett_s1ap_Cdma2000SectorID,
|
|
&ett_s1ap_UERadioPagingInformation,
|
|
#include "packet-s1ap-ettarr.c"
|
|
};
|
|
|
|
module_t *s1ap_module;
|
|
|
|
/* Register protocol */
|
|
proto_s1ap = proto_register_protocol(PNAME, PSNAME, PFNAME);
|
|
/* Register fields and subtrees */
|
|
proto_register_field_array(proto_s1ap, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
/* Register dissector */
|
|
s1ap_handle = register_dissector("s1ap", dissect_s1ap, proto_s1ap);
|
|
|
|
/* Register dissector tables */
|
|
s1ap_ies_dissector_table = register_dissector_table("s1ap.ies", "S1AP-PROTOCOL-IES", proto_s1ap, FT_UINT32, BASE_DEC);
|
|
s1ap_ies_p1_dissector_table = register_dissector_table("s1ap.ies.pair.first", "S1AP-PROTOCOL-IES-PAIR FirstValue", proto_s1ap, FT_UINT32, BASE_DEC);
|
|
s1ap_ies_p2_dissector_table = register_dissector_table("s1ap.ies.pair.second", "S1AP-PROTOCOL-IES-PAIR SecondValue", proto_s1ap, FT_UINT32, BASE_DEC);
|
|
s1ap_extension_dissector_table = register_dissector_table("s1ap.extension", "S1AP-PROTOCOL-EXTENSION", proto_s1ap, FT_UINT32, BASE_DEC);
|
|
s1ap_proc_imsg_dissector_table = register_dissector_table("s1ap.proc.imsg", "S1AP-ELEMENTARY-PROCEDURE InitiatingMessage", proto_s1ap, FT_UINT32, BASE_DEC);
|
|
s1ap_proc_sout_dissector_table = register_dissector_table("s1ap.proc.sout", "S1AP-ELEMENTARY-PROCEDURE SuccessfulOutcome", proto_s1ap, FT_UINT32, BASE_DEC);
|
|
s1ap_proc_uout_dissector_table = register_dissector_table("s1ap.proc.uout", "S1AP-ELEMENTARY-PROCEDURE UnsuccessfulOutcome", proto_s1ap, FT_UINT32, BASE_DEC);
|
|
|
|
/* Register configuration options for ports */
|
|
s1ap_module = prefs_register_protocol(proto_s1ap, proto_reg_handoff_s1ap);
|
|
|
|
prefs_register_uint_preference(s1ap_module, "sctp.port",
|
|
"S1AP SCTP Port",
|
|
"Set the SCTP port for S1AP messages",
|
|
10,
|
|
&gbl_s1apSctpPort);
|
|
prefs_register_bool_preference(s1ap_module, "dissect_container", "Dissect TransparentContainer", "Dissect TransparentContainers that are opaque to S1AP", &g_s1ap_dissect_container);
|
|
|
|
}
|
|
|
|
/*
|
|
* Editor modelines
|
|
*
|
|
* Local Variables:
|
|
* c-basic-offset: 2
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* ex: set shiftwidth=2 tabstop=8 expandtab:
|
|
* :indentSize=2:tabSize=8:noTabs=true:
|
|
*/
|