/* packet-pcap.c * Routines for UTRAN Iupc interface Positioning Calculation Application Part (PCAP) packet dissection * * Copyright 2008, Anders Broman * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * SPDX-License-Identifier: GPL-2.0-or-later * * Based on the RANAP dissector * * References: ETSI TS 125 453 V17.0.0 (2022-04) */ #include "config.h" #include #include #include #include #include #include "packet-ber.h" #include "packet-per.h" #include "packet-sccp.h" #ifdef _MSC_VER /* disable: "warning C4146: unary minus operator applied to unsigned type, result still unsigned" */ #pragma warning(disable:4146) #endif #define PNAME "UTRAN Iupc interface Positioning Calculation Application Part (PCAP)" #define PSNAME "PCAP" #define PFNAME "pcap" #define MAX_SSN 254 void proto_register_pcap(void); void proto_reg_handoff_pcap(void); #include "packet-pcap-val.h" static dissector_handle_t pcap_handle; /* Initialize the protocol and registered fields */ static int proto_pcap; #include "packet-pcap-hf.c" /* Initialize the subtree pointers */ static int ett_pcap; #include "packet-pcap-ett.c" /* Global variables */ static uint32_t ProcedureCode; static uint32_t ProtocolIE_ID; /*static uint32_t ProtocolExtensionID;*/ /* Dissector tables */ static dissector_table_t pcap_ies_dissector_table; static dissector_table_t pcap_ies_p1_dissector_table; static dissector_table_t pcap_ies_p2_dissector_table; static dissector_table_t pcap_extension_dissector_table; static dissector_table_t pcap_proc_imsg_dissector_table; static dissector_table_t pcap_proc_sout_dissector_table; static dissector_table_t pcap_proc_uout_dissector_table; static dissector_table_t pcap_proc_out_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 *); static int dissect_OutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *); #include "packet-pcap-fn.c" static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { return (dissector_try_uint(pcap_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(pcap_extension_dissector_table, ProtocolIE_ID, 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(pcap_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(pcap_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(pcap_proc_uout_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0; } static int dissect_OutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { return (dissector_try_uint(pcap_proc_out_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0; } static int dissect_pcap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) { proto_item *pcap_item = NULL; proto_tree *pcap_tree = NULL; /* make entry in the Protocol column on summary display */ col_set_str(pinfo->cinfo, COL_PROTOCOL, "PCAP"); /* create the pcap protocol tree */ pcap_item = proto_tree_add_item(tree, proto_pcap, tvb, 0, -1, ENC_NA); pcap_tree = proto_item_add_subtree(pcap_item, ett_pcap); dissect_PCAP_PDU_PDU(tvb, pinfo, pcap_tree, NULL); return tvb_captured_length(tvb); } /*--- proto_reg_handoff_pcap ---------------------------------------*/ void proto_reg_handoff_pcap(void) { #include "packet-pcap-dis-tab.c" dissector_add_for_decode_as_with_preference("sccp.ssn", pcap_handle); } /*--- proto_register_pcap -------------------------------------------*/ void proto_register_pcap(void) { /* List of fields */ static hf_register_info hf[] = { #include "packet-pcap-hfarr.c" }; /* List of subtrees */ static int *ett[] = { &ett_pcap, #include "packet-pcap-ettarr.c" }; /* module_t *pcap_module; */ /* Register protocol */ proto_pcap = proto_register_protocol(PNAME, PSNAME, PFNAME); /* Register fields and subtrees */ proto_register_field_array(proto_pcap, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); /* pcap_module = prefs_register_protocol(proto_pcap, NULL); */ /* Register dissector */ pcap_handle = register_dissector("pcap", dissect_pcap, proto_pcap); /* Register dissector tables */ pcap_ies_dissector_table = register_dissector_table("pcap.ies", "PCAP-PROTOCOL-IES", proto_pcap, FT_UINT32, BASE_DEC); pcap_ies_p1_dissector_table = register_dissector_table("pcap.ies.pair.first", "PCAP-PROTOCOL-IES-PAIR FirstValue", proto_pcap, FT_UINT32, BASE_DEC); pcap_ies_p2_dissector_table = register_dissector_table("pcap.ies.pair.second", "PCAP-PROTOCOL-IES-PAIR SecondValue", proto_pcap, FT_UINT32, BASE_DEC); pcap_extension_dissector_table = register_dissector_table("pcap.extension", "PCAP-PROTOCOL-EXTENSION", proto_pcap, FT_UINT32, BASE_DEC); pcap_proc_imsg_dissector_table = register_dissector_table("pcap.proc.imsg", "PCAP-ELEMENTARY-PROCEDURE InitiatingMessage", proto_pcap, FT_UINT32, BASE_DEC); pcap_proc_sout_dissector_table = register_dissector_table("pcap.proc.sout", "PCAP-ELEMENTARY-PROCEDURE SuccessfulOutcome", proto_pcap, FT_UINT32, BASE_DEC); pcap_proc_uout_dissector_table = register_dissector_table("pcap.proc.uout", "PCAP-ELEMENTARY-PROCEDURE UnsuccessfulOutcome", proto_pcap, FT_UINT32, BASE_DEC); pcap_proc_out_dissector_table = register_dissector_table("pcap.proc.out", "PCAP-ELEMENTARY-PROCEDURE Outcome", proto_pcap, FT_UINT32, BASE_DEC); }