/* packet-lcsap.c * Routines for LCS-AP packet dissembly. * * Copyright (c) 2011 by Spenser Sheng * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1999 Gerald Combs * * SPDX-License-Identifier: GPL-2.0-or-later * References: * ETSI TS 129 171 V9.2.0 (2010-10) */ #include "config.h" #include #include #include #include #include #include #include #include "packet-ber.h" #include "packet-per.h" #include "packet-e212.h" #include "packet-sccp.h" #include "packet-lcsap.h" #ifdef _MSC_VER /* disable: "warning C4146: unary minus operator applied to unsigned type, result still unsigned" */ #pragma warning(disable:4146) #endif #define PNAME "LCS Application Protocol" #define PSNAME "LCSAP" #define PFNAME "lcsap" void proto_register_lcsap(void); void proto_reg_handoff_lcsap(void); #define SCTP_PORT_LCSAP 9082 #include "packet-lcsap-val.h" /* Initialize the protocol and registered fields */ static int proto_lcsap = -1; static int hf_lcsap_pos_method = -1; static int hf_lcsap_pos_usage = -1; static int hf_lcsap_gnss_pos_method = -1; static int hf_lcsap_gnss_id = -1; static int hf_lcsap_gnss_pos_usage = -1; #include "packet-lcsap-hf.c" /* Initialize the subtree pointers */ static int ett_lcsap = -1; static int ett_lcsap_plmnd_id = -1; static int ett_lcsap_imsi = -1; static int ett_lcsap_civic_address = -1; #include "packet-lcsap-ett.c" static expert_field ei_lcsap_civic_data_not_xml = EI_INIT; /* Global variables */ static guint32 ProcedureCode; static guint32 ProtocolIE_ID; static guint32 ProtocolExtensionID; static guint32 PayloadType = -1; /* Dissector handles */ static dissector_handle_t lcsap_handle; static dissector_handle_t lpp_handle; static dissector_handle_t lppa_handle; static dissector_handle_t xml_handle; /* Dissector tables */ static dissector_table_t lcsap_ies_dissector_table; static dissector_table_t lcsap_extension_dissector_table; static dissector_table_t lcsap_proc_imsg_dissector_table; static dissector_table_t lcsap_proc_sout_dissector_table; static dissector_table_t lcsap_proc_uout_dissector_table; static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *); 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 *); /* 7.4.13 Positioning Data * Coding of positioning method (bits 8-4) */ static const value_string lcsap_pos_method_vals[] = { { 0x00, "Cell ID" }, { 0x01, "Reserved" }, { 0x02, "E-CID" }, { 0x03, "Reserved" }, { 0x04, "OTDOA" }, { 0x05, "Reserved" }, { 0x06, "Reserved" }, { 0x07, "Reserved" }, { 0x08, "U-TDOA" }, { 0x09, "Reserved" }, { 0x0a, "Reserved" }, { 0x0b, "Reserved" }, { 0x0c, "Reserved for other location technologies" }, { 0x0d, "Reserved for other location technologies" }, { 0x0e, "Reserved for other location technologies" }, { 0x0f, "Reserved for other location technologies" }, { 0x10, "Reserved for network specific positioning methods" }, { 0x11, "Reserved for network specific positioning methods" }, { 0x12, "Reserved for network specific positioning methods" }, { 0x13, "Reserved for network specific positioning methods" }, { 0x14, "Reserved for network specific positioning methods" }, { 0x15, "Reserved for network specific positioning methods" }, { 0x16, "Reserved for network specific positioning methods" }, { 0x17, "Reserved for network specific positioning methods" }, { 0x18, "Reserved for network specific positioning methods" }, { 0x19, "Reserved for network specific positioning methods" }, { 0x1a, "Reserved for network specific positioning methods" }, { 0x1b, "Reserved for network specific positioning methods" }, { 0x1c, "Reserved for network specific positioning methods" }, { 0x1d, "Reserved for network specific positioning methods" }, { 0x1e, "Reserved for network specific positioning methods" }, { 0x1f, "Reserved for network specific positioning methods" }, { 0, NULL } }; /* Coding of usage (bits 3-1)*/ static const value_string lcsap_pos_usage_vals[] = { { 0x00, "Attempted unsuccessfully due to failure or interruption - not used" }, { 0x01, "Attempted successfully: results not used to generate location - not used." }, { 0x02, "Attempted successfully: results used to verify but not generate location - not used." }, { 0x03, "Attempted successfully: results used to generate location" }, { 0x04, "Attempted successfully: case where UE supports multiple mobile based positioning methods and the actual method or methods used by the UE cannot be determined." }, { 0x05, "Reserved" }, { 0x06, "Reserved" }, { 0x07, "Reserved" }, { 0, NULL } }; /* Coding of Method (Bits 8-7) */ static const value_string lcsap_gnss_pos_method_vals[] = { { 0x00, "UE-Based" }, { 0x01, "UE-Assisted" }, { 0x02, "Conventional" }, { 0x03, "Reserved" }, { 0, NULL } }; /* Coding of GNSS ID (Bits 6-4) */ static const value_string lcsap_gnss_id_vals[] = { { 0x00, "GPS" }, { 0x01, "Galileo" }, { 0x02, "SBAS" }, { 0x03, "Modernized GPS" }, { 0x04, "QZSS" }, { 0x05, "GLONASS" }, { 0x06, "Reserved" }, { 0x07, "Reserved" }, { 0, NULL } }; /* Coding of usage (bits 3- 1) */ static const value_string lcsap_gnss_pos_usage_vals[] = { { 0x00, "Attempted unsuccessfully due to failure or interruption" }, { 0x01, "Attempted successfully: results not used to generate location" }, { 0x02, "Attempted successfully: results used to verify but not generate location" }, { 0x03, "Attempted successfully: results used to generate location" }, { 0x04, "Attempted successfully: case where UE supports multiple mobile based positioning methods and the actual method or methods used by the UE cannot be determined." }, { 0x05, "Reserved" }, { 0x06, "Reserved" }, { 0x07, "Reserved" }, { 0, NULL } }; #include "packet-lcsap-fn.c" static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { return (dissector_try_uint(lcsap_ies_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_) { return (dissector_try_uint(lcsap_extension_dissector_table, ProtocolExtensionID, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0; } static int dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { return (dissector_try_uint(lcsap_proc_imsg_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0; } static int dissect_SuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { return (dissector_try_uint(lcsap_proc_sout_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0; } static int dissect_UnsuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { return (dissector_try_uint(lcsap_proc_uout_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0; } static int dissect_lcsap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) { proto_item *lcsap_item = NULL; proto_tree *lcsap_tree = NULL; /* make entry in the Protocol column on summary display */ col_set_str(pinfo->cinfo, COL_PROTOCOL, "LCSAP"); /* create the lcsap protocol tree */ lcsap_item = proto_tree_add_item(tree, proto_lcsap, tvb, 0, -1, ENC_NA); lcsap_tree = proto_item_add_subtree(lcsap_item, ett_lcsap); dissect_LCS_AP_PDU_PDU(tvb, pinfo, lcsap_tree, NULL); return tvb_captured_length(tvb); } /*--- proto_reg_handoff_lcsap ---------------------------------------*/ void proto_reg_handoff_lcsap(void) { lpp_handle = find_dissector_add_dependency("lpp", proto_lcsap); lppa_handle = find_dissector_add_dependency("lppa", proto_lcsap); xml_handle = find_dissector_add_dependency("xml", proto_lcsap); dissector_add_uint_with_preference("sctp.port", SCTP_PORT_LCSAP, lcsap_handle); dissector_add_uint("sctp.ppi", LCS_AP_PAYLOAD_PROTOCOL_ID, lcsap_handle); #include "packet-lcsap-dis-tab.c" } /*--- proto_register_lcsap -------------------------------------------*/ void proto_register_lcsap(void) { /* List of fields */ static hf_register_info hf[] = { /* 7.4.13 Positioning Data */ { &hf_lcsap_pos_method, { "Positioning Method", "lcsap.pos_method", FT_UINT8, BASE_DEC, VALS(lcsap_pos_method_vals), 0xf8, NULL, HFILL } }, { &hf_lcsap_pos_usage, { "Positioning usage", "lcsap.pos_usage", FT_UINT8, BASE_DEC, VALS(lcsap_pos_usage_vals), 0x07, NULL, HFILL } }, { &hf_lcsap_gnss_pos_method, { "GNSS Positioning Method", "lcsap.gnss_pos_method", FT_UINT8, BASE_DEC, VALS(lcsap_gnss_pos_method_vals), 0xc0, NULL, HFILL } }, { &hf_lcsap_gnss_id, { "GNSS ID", "lcsap.gnss_id", FT_UINT8, BASE_DEC, VALS(lcsap_gnss_id_vals), 0x38, NULL, HFILL } }, { &hf_lcsap_gnss_pos_usage, { "GNSS Positioning usage", "lcsap.gnss_pos_usage", FT_UINT8, BASE_DEC, VALS(lcsap_gnss_pos_usage_vals), 0x07, NULL, HFILL } }, #include "packet-lcsap-hfarr.c" }; /* List of subtrees */ static gint *ett[] = { &ett_lcsap, &ett_lcsap_plmnd_id, &ett_lcsap_imsi, &ett_lcsap_civic_address, #include "packet-lcsap-ettarr.c" }; /* module_t *lcsap_module; */ expert_module_t *expert_lcsap; static ei_register_info ei[] = { { &ei_lcsap_civic_data_not_xml, { "lcsap.civic_data_not_xml", PI_PROTOCOL, PI_ERROR, "Should contain a UTF-8 encoded PIDF - LO XML document as defined in IETF RFC 4119", EXPFILL } }, }; /* Register protocol */ proto_lcsap = proto_register_protocol(PNAME, PSNAME, PFNAME); /* Register fields and subtrees */ proto_register_field_array(proto_lcsap, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); lcsap_handle = register_dissector("lcsap", dissect_lcsap, proto_lcsap); /* Register dissector tables */ lcsap_ies_dissector_table = register_dissector_table("lcsap.ies", "LCS-AP-PROTOCOL-IES", proto_lcsap, FT_UINT32, BASE_DEC); expert_lcsap = expert_register_protocol(proto_lcsap); expert_register_field_array(expert_lcsap, ei, array_length(ei)); lcsap_extension_dissector_table = register_dissector_table("lcsap.extension", "LCS-AP-PROTOCOL-EXTENSION", proto_lcsap, FT_UINT32, BASE_DEC); lcsap_proc_imsg_dissector_table = register_dissector_table("lcsap.proc.imsg", "LCS-AP-ELEMENTARY-PROCEDURE InitiatingMessage", proto_lcsap, FT_UINT32, BASE_DEC); lcsap_proc_sout_dissector_table = register_dissector_table("lcsap.proc.sout", "LCS-AP-ELEMENTARY-PROCEDURE SuccessfulOutcome", proto_lcsap, FT_UINT32, BASE_DEC); lcsap_proc_uout_dissector_table = register_dissector_table("lcsap.proc.uout", "LCS-AP-ELEMENTARY-PROCEDURE UnsuccessfulOutcome", proto_lcsap, FT_UINT32, BASE_DEC); /* lcsap_module = prefs_register_protocol(proto_lcsap, NULL); */ } /* * 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: */