forked from osmocom/wireshark
215 lines
7.9 KiB
C
215 lines
7.9 KiB
C
/* packet-pcap.c
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* Routines for UTRAN Iupc interface Positioning Calculation Application Part (PCAP) packet dissection
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*
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* Copyright 2008, Anders Broman <anders.broman@ericsson.com>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Based on the RANAP dissector
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*
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* References: ETSI TS 125 453 V7.9.0 (2008-02)
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/prefs.h>
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#include <epan/strutil.h>
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#include <epan/asn1.h>
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#include "packet-ber.h"
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#include "packet-per.h"
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#include "packet-sccp.h"
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#ifdef _MSC_VER
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/* disable: "warning C4146: unary minus operator applied to unsigned type, result still unsigned" */
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#pragma warning(disable:4146)
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#endif
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#define PNAME "UTRAN Iupc interface Positioning Calculation Application Part (PCAP)"
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#define PSNAME "PCAP"
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#define PFNAME "pcap"
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#define MAX_SSN 254
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void proto_register_pcap(void);
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void proto_reg_handoff_pcap(void);
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static range_t *global_ssn_range;
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static dissector_table_t sccp_ssn_table;
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#include "packet-pcap-val.h"
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static dissector_handle_t pcap_handle = NULL;
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/* Initialize the protocol and registered fields */
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static int proto_pcap = -1;
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#include "packet-pcap-hf.c"
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/* Initialize the subtree pointers */
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static int ett_pcap = -1;
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#include "packet-pcap-ett.c"
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/* Global variables */
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static guint32 ProcedureCode;
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static guint32 ProtocolIE_ID;
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/*static guint32 ProtocolExtensionID;*/
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/* Dissector tables */
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static dissector_table_t pcap_ies_dissector_table;
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static dissector_table_t pcap_ies_p1_dissector_table;
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static dissector_table_t pcap_ies_p2_dissector_table;
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static dissector_table_t pcap_extension_dissector_table;
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static dissector_table_t pcap_proc_imsg_dissector_table;
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static dissector_table_t pcap_proc_sout_dissector_table;
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static dissector_table_t pcap_proc_uout_dissector_table;
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static dissector_table_t pcap_proc_out_dissector_table;
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static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
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static int dissect_ProtocolExtensionFieldExtensionValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
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static int dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
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static int dissect_SuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
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static int dissect_UnsuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
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static int dissect_OutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
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#include "packet-pcap-fn.c"
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static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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return (dissector_try_uint(pcap_ies_dissector_table, ProtocolIE_ID, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
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}
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static int dissect_ProtocolExtensionFieldExtensionValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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return (dissector_try_uint(pcap_extension_dissector_table, ProtocolIE_ID, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
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}
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static int dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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return (dissector_try_uint(pcap_proc_imsg_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
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}
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static int dissect_SuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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return (dissector_try_uint(pcap_proc_sout_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
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}
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static int dissect_UnsuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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return (dissector_try_uint(pcap_proc_uout_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
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}
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static int dissect_OutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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return (dissector_try_uint(pcap_proc_out_dissector_table, ProcedureCode, tvb, pinfo, tree)) ? tvb_captured_length(tvb) : 0;
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}
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static int
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dissect_pcap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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{
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proto_item *pcap_item = NULL;
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proto_tree *pcap_tree = NULL;
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/* make entry in the Protocol column on summary display */
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "PCAP");
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/* create the pcap protocol tree */
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pcap_item = proto_tree_add_item(tree, proto_pcap, tvb, 0, -1, ENC_NA);
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pcap_tree = proto_item_add_subtree(pcap_item, ett_pcap);
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dissect_PCAP_PDU_PDU(tvb, pinfo, pcap_tree, NULL);
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return tvb_captured_length(tvb);
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}
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/*--- proto_reg_handoff_pcap ---------------------------------------*/
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void
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proto_reg_handoff_pcap(void)
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{
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static gboolean prefs_initialized = FALSE;
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static range_t *ssn_range;
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if (! prefs_initialized) {
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sccp_ssn_table = find_dissector_table("sccp.ssn");
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prefs_initialized = TRUE;
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#include "packet-pcap-dis-tab.c"
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} else {
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dissector_delete_uint_range("sccp.ssn", ssn_range, pcap_handle);
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g_free(ssn_range);
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}
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ssn_range = range_copy(global_ssn_range);
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dissector_add_uint_range("sccp.ssn", ssn_range, pcap_handle);
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}
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/*--- proto_register_pcap -------------------------------------------*/
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void proto_register_pcap(void) {
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/* List of fields */
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static hf_register_info hf[] = {
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#include "packet-pcap-hfarr.c"
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};
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/* List of subtrees */
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static gint *ett[] = {
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&ett_pcap,
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#include "packet-pcap-ettarr.c"
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};
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module_t *pcap_module;
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/* Register protocol */
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proto_pcap = proto_register_protocol(PNAME, PSNAME, PFNAME);
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/* Register fields and subtrees */
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proto_register_field_array(proto_pcap, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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pcap_module = prefs_register_protocol(proto_pcap, proto_reg_handoff_pcap);
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/* Register dissector */
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pcap_handle = register_dissector("pcap", dissect_pcap, proto_pcap);
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/* Register dissector tables */
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pcap_ies_dissector_table = register_dissector_table("pcap.ies", "PCAP-PROTOCOL-IES", proto_pcap, FT_UINT32, BASE_DEC);
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pcap_ies_p1_dissector_table = register_dissector_table("pcap.ies.pair.first", "PCAP-PROTOCOL-IES-PAIR FirstValue", proto_pcap, FT_UINT32, BASE_DEC);
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pcap_ies_p2_dissector_table = register_dissector_table("pcap.ies.pair.second", "PCAP-PROTOCOL-IES-PAIR SecondValue", proto_pcap, FT_UINT32, BASE_DEC);
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pcap_extension_dissector_table = register_dissector_table("pcap.extension", "PCAP-PROTOCOL-EXTENSION", proto_pcap, FT_UINT32, BASE_DEC);
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pcap_proc_imsg_dissector_table = register_dissector_table("pcap.proc.imsg", "PCAP-ELEMENTARY-PROCEDURE InitiatingMessage", proto_pcap, FT_UINT32, BASE_DEC);
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pcap_proc_sout_dissector_table = register_dissector_table("pcap.proc.sout", "PCAP-ELEMENTARY-PROCEDURE SuccessfulOutcome", proto_pcap, FT_UINT32, BASE_DEC);
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pcap_proc_uout_dissector_table = register_dissector_table("pcap.proc.uout", "PCAP-ELEMENTARY-PROCEDURE UnsuccessfulOutcome", proto_pcap, FT_UINT32, BASE_DEC);
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pcap_proc_out_dissector_table = register_dissector_table("pcap.proc.out", "PCAP-ELEMENTARY-PROCEDURE Outcome", proto_pcap, FT_UINT32, BASE_DEC);
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/* Preferences */
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/* Set default SSNs */
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range_convert_str(&global_ssn_range, "", MAX_SSN);
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prefs_register_range_preference(pcap_module, "ssn", "SCCP SSNs",
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"SCCP (and SUA) SSNs to decode as PCAP",
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&global_ssn_range, MAX_SSN);
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}
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