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/* packet-pcap.c
* Routines for UTRAN Iupc interface Positioning Calculation Application Part (PCAP) packet dissection
*
* Copyright 2008, 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: ETSI TS 125 453 V7.9.0 (2008-02)
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/prefs.h>
#include <epan/strutil.h>
#include <epan/asn1.h>
#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 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)
{
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", proto_pcap, FT_UINT32, BASE_DEC, DISSECTOR_TABLE_ALLOW_DUPLICATE);
pcap_ies_p1_dissector_table = register_dissector_table("pcap.ies.pair.first", "PCAP-PROTOCOL-IES-PAIR FirstValue", proto_pcap, FT_UINT32, BASE_DEC, DISSECTOR_TABLE_ALLOW_DUPLICATE);
pcap_ies_p2_dissector_table = register_dissector_table("pcap.ies.pair.second", "PCAP-PROTOCOL-IES-PAIR SecondValue", proto_pcap, FT_UINT32, BASE_DEC, DISSECTOR_TABLE_ALLOW_DUPLICATE);
pcap_extension_dissector_table = register_dissector_table("pcap.extension", "PCAP-PROTOCOL-EXTENSION", proto_pcap, FT_UINT32, BASE_DEC, DISSECTOR_TABLE_ALLOW_DUPLICATE);
pcap_proc_imsg_dissector_table = register_dissector_table("pcap.proc.imsg", "PCAP-ELEMENTARY-PROCEDURE InitiatingMessage", proto_pcap, FT_UINT32, BASE_DEC, DISSECTOR_TABLE_ALLOW_DUPLICATE);
pcap_proc_sout_dissector_table = register_dissector_table("pcap.proc.sout", "PCAP-ELEMENTARY-PROCEDURE SuccessfulOutcome", proto_pcap, FT_UINT32, BASE_DEC, DISSECTOR_TABLE_ALLOW_DUPLICATE);
pcap_proc_uout_dissector_table = register_dissector_table("pcap.proc.uout", "PCAP-ELEMENTARY-PROCEDURE UnsuccessfulOutcome", proto_pcap, FT_UINT32, BASE_DEC, DISSECTOR_TABLE_ALLOW_DUPLICATE);
pcap_proc_out_dissector_table = register_dissector_table("pcap.proc.out", "PCAP-ELEMENTARY-PROCEDURE Outcome", proto_pcap, FT_UINT32, BASE_DEC, DISSECTOR_TABLE_ALLOW_DUPLICATE);
/* 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);
}
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