/* 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 * * 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: ETSI TS 125 453 V7.9.0 (2008-02) */ #include "config.h" #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); static range_t *global_ssn_range; static dissector_table_t sccp_ssn_table; #include "packet-pcap-val.h" static dissector_handle_t pcap_handle = NULL; /* Initialize the protocol and registered fields */ static int proto_pcap = -1; #include "packet-pcap-hf.c" /* Initialize the subtree pointers */ static int ett_pcap = -1; #include "packet-pcap-ett.c" /* Global variables */ static guint32 ProcedureCode; static guint32 ProtocolIE_ID; /*static guint32 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 void dissect_pcap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { 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); } /*--- proto_reg_handoff_pcap ---------------------------------------*/ void proto_reg_handoff_pcap(void) { static gboolean prefs_initialized = FALSE; static range_t *ssn_range; if (! prefs_initialized) { pcap_handle = find_dissector("pcap"); sccp_ssn_table = find_dissector_table("sccp.ssn"); prefs_initialized = TRUE; #include "packet-pcap-dis-tab.c" } else { dissector_delete_uint_range("sccp.ssn", ssn_range, pcap_handle); g_free(ssn_range); } ssn_range = range_copy(global_ssn_range); dissector_add_uint_range("sccp.ssn", ssn_range, 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 gint *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, proto_reg_handoff_pcap); /* Register dissector */ register_dissector("pcap", dissect_pcap, proto_pcap); /* Register dissector tables */ pcap_ies_dissector_table = register_dissector_table("pcap.ies", "PCAP-PROTOCOL-IES", FT_UINT32, BASE_DEC); pcap_ies_p1_dissector_table = register_dissector_table("pcap.ies.pair.first", "PCAP-PROTOCOL-IES-PAIR FirstValue", FT_UINT32, BASE_DEC); pcap_ies_p2_dissector_table = register_dissector_table("pcap.ies.pair.second", "PCAP-PROTOCOL-IES-PAIR SecondValue", FT_UINT32, BASE_DEC); pcap_extension_dissector_table = register_dissector_table("pcap.extension", "PCAP-PROTOCOL-EXTENSION", FT_UINT32, BASE_DEC); pcap_proc_imsg_dissector_table = register_dissector_table("pcap.proc.imsg", "PCAP-ELEMENTARY-PROCEDURE InitiatingMessage", FT_UINT32, BASE_DEC); pcap_proc_sout_dissector_table = register_dissector_table("pcap.proc.sout", "PCAP-ELEMENTARY-PROCEDURE SuccessfulOutcome", FT_UINT32, BASE_DEC); pcap_proc_uout_dissector_table = register_dissector_table("pcap.proc.uout", "PCAP-ELEMENTARY-PROCEDURE UnsuccessfulOutcome", FT_UINT32, BASE_DEC); pcap_proc_out_dissector_table = register_dissector_table("pcap.proc.out", "PCAP-ELEMENTARY-PROCEDURE Outcome", FT_UINT32, BASE_DEC); /* Preferences */ /* Set default SSNs */ range_convert_str(&global_ssn_range, "", MAX_SSN); prefs_register_range_preference(pcap_module, "ssn", "SCCP SSNs", "SCCP (and SUA) SSNs to decode as PCAP", &global_ssn_range, MAX_SSN); }