diff options
Diffstat (limited to 'epan/dissectors/asn1/s1ap/packet-s1ap-template.c')
| -rw-r--r-- | epan/dissectors/asn1/s1ap/packet-s1ap-template.c | 303 |
1 files changed, 303 insertions, 0 deletions
diff --git a/epan/dissectors/asn1/s1ap/packet-s1ap-template.c b/epan/dissectors/asn1/s1ap/packet-s1ap-template.c new file mode 100644 index 0000000000..4436def0bf --- /dev/null +++ b/epan/dissectors/asn1/s1ap/packet-s1ap-template.c @@ -0,0 +1,303 @@ +/* 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; + +#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; + +/* 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 dissector_handle_t s1ap_handle; + static guint SctpPort; + + s1ap_handle = find_dissector("s1ap"); + gcsna_handle = find_dissector("gcsna"); + + if (!Initialized) { + nas_eps_handle = find_dissector("nas-eps"); + lppa_handle = find_dissector("lppa"); + bssgp_handle = find_dissector("bssgp"); + 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, +#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 */ + register_dissector("s1ap", dissect_s1ap, proto_s1ap); + + /* Register dissector tables */ + s1ap_ies_dissector_table = register_dissector_table("s1ap.ies", "S1AP-PROTOCOL-IES", FT_UINT32, BASE_DEC, DISSECTOR_TABLE_ALLOW_DUPLICATE); + s1ap_ies_p1_dissector_table = register_dissector_table("s1ap.ies.pair.first", "S1AP-PROTOCOL-IES-PAIR FirstValue", FT_UINT32, BASE_DEC, DISSECTOR_TABLE_ALLOW_DUPLICATE); + s1ap_ies_p2_dissector_table = register_dissector_table("s1ap.ies.pair.second", "S1AP-PROTOCOL-IES-PAIR SecondValue", FT_UINT32, BASE_DEC, DISSECTOR_TABLE_ALLOW_DUPLICATE); + s1ap_extension_dissector_table = register_dissector_table("s1ap.extension", "S1AP-PROTOCOL-EXTENSION", FT_UINT32, BASE_DEC, DISSECTOR_TABLE_ALLOW_DUPLICATE); + s1ap_proc_imsg_dissector_table = register_dissector_table("s1ap.proc.imsg", "S1AP-ELEMENTARY-PROCEDURE InitiatingMessage", FT_UINT32, BASE_DEC, DISSECTOR_TABLE_ALLOW_DUPLICATE); + s1ap_proc_sout_dissector_table = register_dissector_table("s1ap.proc.sout", "S1AP-ELEMENTARY-PROCEDURE SuccessfulOutcome", FT_UINT32, BASE_DEC, DISSECTOR_TABLE_ALLOW_DUPLICATE); + s1ap_proc_uout_dissector_table = register_dissector_table("s1ap.proc.uout", "S1AP-ELEMENTARY-PROCEDURE UnsuccessfulOutcome", FT_UINT32, BASE_DEC, DISSECTOR_TABLE_ALLOW_DUPLICATE); + + /* 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); + +} + + + + + |