forked from osmocom/wireshark
857 lines
27 KiB
C
857 lines
27 KiB
C
/* packet-actrace.c
|
|
* Routines for AudioCodes Trunk traces packet disassembly
|
|
*
|
|
* Copyright (c) 2005 by Alejandro Vaquero <alejandro.vaquero@verso.com>
|
|
*
|
|
* $Id$
|
|
*
|
|
* Wireshark - Network traffic analyzer
|
|
* By Gerald Combs <gerald@wireshark.org>
|
|
* Copyright 1999 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <ctype.h>
|
|
#include <string.h>
|
|
#include <epan/packet.h>
|
|
#include <epan/proto.h>
|
|
#include <epan/prefs.h>
|
|
#include <epan/tap.h>
|
|
#include "packet-actrace.h"
|
|
#include <epan/emem.h>
|
|
|
|
#define UDP_PORT_ACTRACE 2428
|
|
#define NOT_ACTRACE 0
|
|
#define ACTRACE_CAS 1
|
|
#define ACTRACE_ISDN 2
|
|
|
|
|
|
void proto_reg_handoff_actrace(void);
|
|
|
|
|
|
/* Define the actrace proto */
|
|
static int proto_actrace = -1;
|
|
|
|
/* Define many headers for actrace */
|
|
/* ISDN headers */
|
|
static int hf_actrace_isdn_direction = -1;
|
|
static int hf_actrace_isdn_trunk = -1;
|
|
static int hf_actrace_isdn_length = -1;
|
|
|
|
|
|
/* CAS headers */
|
|
static int hf_actrace_cas_time = -1;
|
|
static int hf_actrace_cas_source = -1;
|
|
static int hf_actrace_cas_current_state = -1;
|
|
static int hf_actrace_cas_event = -1;
|
|
static int hf_actrace_cas_next_state = -1;
|
|
static int hf_actrace_cas_function = -1;
|
|
static int hf_actrace_cas_par0 = -1;
|
|
static int hf_actrace_cas_par1 = -1;
|
|
static int hf_actrace_cas_par2 = -1;
|
|
static int hf_actrace_cas_trunk = -1;
|
|
static int hf_actrace_cas_bchannel = -1;
|
|
static int hf_actrace_cas_connection_id = -1;
|
|
|
|
|
|
|
|
static dissector_handle_t lapd_handle;
|
|
|
|
#define ACTRACE_CAS_SOURCE_DSP 0
|
|
#define ACTRACE_CAS_SOURCE_USER 1
|
|
#define ACTRACE_CAS_SOURCE_TABLE 2
|
|
|
|
static const value_string actrace_cas_source_vals[] = {
|
|
{ACTRACE_CAS_SOURCE_DSP, "DSP"},
|
|
{ACTRACE_CAS_SOURCE_USER, "User"},
|
|
{ACTRACE_CAS_SOURCE_TABLE, "Table"},
|
|
{0, NULL }
|
|
};
|
|
|
|
static const value_string actrace_cas_source_vals_short[] = {
|
|
{ACTRACE_CAS_SOURCE_DSP, "D"},
|
|
{ACTRACE_CAS_SOURCE_USER, "U"},
|
|
{ACTRACE_CAS_SOURCE_TABLE, "T"},
|
|
{0, NULL }
|
|
};
|
|
|
|
#define ACTRACE_CAS_EV_11 17
|
|
#define ACTRACE_CAS_EV_10 18
|
|
#define ACTRACE_CAS_EV_01 19
|
|
#define ACTRACE_CAS_EV_00 20
|
|
|
|
#define ACTRACE_CAS_EV_DTMF 302
|
|
#define ACTRACE_CAS_EV_FIRST_DIGIT 63
|
|
|
|
static const value_string actrace_cas_event_ab_vals[] = {
|
|
{ACTRACE_CAS_EV_11, "11"},
|
|
{ACTRACE_CAS_EV_10, "10"},
|
|
{ACTRACE_CAS_EV_01, "01"},
|
|
{ACTRACE_CAS_EV_00, "00"},
|
|
{0, NULL}
|
|
};
|
|
|
|
static const value_string actrace_cas_mf_vals[] = {
|
|
{32, "1"},
|
|
{33, "2"},
|
|
{34, "3"},
|
|
{35, "4"},
|
|
{36, "5"},
|
|
{37, "6"},
|
|
{38, "7"},
|
|
{39, "8"},
|
|
{40, "9"},
|
|
{41, "0"},
|
|
{42, "A"},
|
|
{43, "B"},
|
|
{44, "C"},
|
|
{45, "*"},
|
|
{46, "#"},
|
|
{0, NULL}
|
|
};
|
|
|
|
static const value_string actrace_cas_event_vals[] = {
|
|
{0, "FUNCTION0"},
|
|
{1, "FUNCTION1"},
|
|
{2, "FUNCTION2"},
|
|
{3, "FUNCTION3"},
|
|
{4, "EV_PLACE_CALL"},
|
|
{5, "EV_TIMER_EXPIRED1"},
|
|
{6, "EV_TIMER_EXPIRED2"},
|
|
{7, "EV_TIMER_EXPIRED3"},
|
|
{8, "EV_TIMER_EXPIRED4"},
|
|
{9, "EV_TIMER_EXPIRED5"},
|
|
{10, "EV_TIMER_EXPIRED6"},
|
|
{11, "EV_TIMER_EXPIRED7"},
|
|
{12, "EV_TIMER_EXPIRED8"},
|
|
{13, "EV_ANSWER"},
|
|
{14, "EV_DIAL_TONE_DETECTED"},
|
|
{15, "EV_DIAL_ENDED"},
|
|
{16, "EV_DISCONNECT"},
|
|
{ACTRACE_CAS_EV_11, "EV_CAS_1_1"},
|
|
{ACTRACE_CAS_EV_10, "EV_CAS_1_0"},
|
|
{ACTRACE_CAS_EV_01, "EV_CAS_0_1"},
|
|
{ACTRACE_CAS_EV_00, "EV_CAS_0_0"},
|
|
{21, "EV_RB_TONE_STARTED"},
|
|
{22, "EV_RB_TONE_STOPPED"},
|
|
{23, "EV_BUSY_TONE"},
|
|
{24, "EV_FAST_BUSY_TONE"},
|
|
{25, "EV_HELLO_DETECTED"},
|
|
{26, "EV_DIAL_TONE_STOPPED"},
|
|
{27, "EV_DISCONNECT_INCOMING"},
|
|
{28, "EV_RELEASE_CALL"},
|
|
{29, "EV_DIALED_NUM_DETECTED"},
|
|
{30, "EV_COUNTER1_EXPIRED"},
|
|
{31, "EV_COUNTER2_EXPIRED"},
|
|
{32, "EV_MFRn_1"},
|
|
{33, "EV_MFRn_2"},
|
|
{34, "EV_MFRn_3"},
|
|
{35, "EV_MFRn_4"},
|
|
{36, "EV_MFRn_5"},
|
|
{37, "EV_MFRn_6"},
|
|
{38, "EV_MFRn_7"},
|
|
{39, "EV_MFRn_8"},
|
|
{40, "EV_MFRn_9"},
|
|
{41, "EV_MFRn_10"},
|
|
{42, "EV_MFRn_11"},
|
|
{43, "EV_MFRn_12"},
|
|
{44, "EV_MFRn_13"},
|
|
{45, "EV_MFRn_14"},
|
|
{46, "EV_MFRn_15"},
|
|
{47, "EV_MFRn_1_STOPED"},
|
|
{48, "EV_MFRn_2_STOPED"},
|
|
{49, "EV_MFRn_3_STOPED"},
|
|
{50, "EV_MFRn_4_STOPED"},
|
|
{51, "EV_MFRn_5_STOPED"},
|
|
{52, "EV_MFRn_6_STOPED"},
|
|
{53, "EV_MFRn_7_STOPED"},
|
|
{54, "EV_MFRn_8_STOPED"},
|
|
{55, "EV_MFRn_9_STOPED"},
|
|
{56, "EV_MFRn_10_STOPED"},
|
|
{57, "EV_MFRn_11_STOPED"},
|
|
{58, "EV_MFRn_12_STOPED"},
|
|
{59, "EV_MFRn_13_STOPED"},
|
|
{60, "EV_MFRn_14_STOPED"},
|
|
{61, "EV_MFRn_15_STOPED"},
|
|
{62, "EV_ANI_NUM_DETECTED"},
|
|
{ACTRACE_CAS_EV_FIRST_DIGIT, "EV_FIRST_DIGIT"},
|
|
{64, "EV_END_OF_MF_DIGIT"},
|
|
{65, "EV_ACCEPT"},
|
|
{66, "EV_REJECT_BUSY"},
|
|
{67, "EV_REJECT_CONGESTION"},
|
|
{68, "EV_REJECT_UNALLOCATED"},
|
|
{69, "EV_REJECT_RESERVE1"},
|
|
{70, "EV_REJECT_RESERVE2"},
|
|
{71, "EV_NO_ANI"},
|
|
{1010, "EV_TIMER_EXPIRED10"},
|
|
{1020, "EV_DEBOUNCE_TIMER_EXPIRED"},
|
|
{1030, "EV_INTER_DIGIT_TIMER_EXPIRED"},
|
|
{100, "EV_INIT_CHANNEL"},
|
|
{101, "EV_BUSY_TONE_STOPPED"},
|
|
{102, "EV_FAST_BUSY_TONE_STOPPED"},
|
|
{103, "EV_TO_USER"},
|
|
{104, "SEND_FIRST_DIGIT"},
|
|
{110, "EV_CLOSE_CHANNEL"},
|
|
{111, "EV_OPEN_CHANNEL"},
|
|
{112, "EV_FAIL_DIAL"},
|
|
{113, "EV_FAIL_SEND_CAS"},
|
|
{114, "EV_ALARM"},
|
|
{ACTRACE_CAS_EV_DTMF, "EV_DTMF"},
|
|
{0, NULL}
|
|
};
|
|
|
|
#define SEND_CAS 2
|
|
#define SEND_EVENT 3
|
|
#define CHANGE_COLLECT_TYPE 13
|
|
#define SEND_MF 8
|
|
#define SEND_DEST_NUM 4
|
|
|
|
static const value_string actrace_cas_function_vals[] = {
|
|
{0, "NILL"},
|
|
{1, "SET_TIMER"},
|
|
{SEND_CAS, "SEND_CAS"},
|
|
{SEND_EVENT, "SEND_EVENT"},
|
|
{SEND_DEST_NUM, "SEND_DEST_NUM"},
|
|
{5, "DEL_TIMER"},
|
|
{6, "START_COLLECT"},
|
|
{7, "STOP_COLLECT"},
|
|
{SEND_MF, "SEND_MF"},
|
|
{9, "STOP_DIAL_MF"},
|
|
{10, "SET_COUNTER"},
|
|
{11, "DEC_COUNTER"},
|
|
{12, "SEND_PROG_TON"},
|
|
{CHANGE_COLLECT_TYPE, "CHANGE_COLLECT_TYPE"},
|
|
{14, "GENERATE_CAS_EV"},
|
|
{0, NULL}
|
|
};
|
|
|
|
static const value_string actrace_cas_pstn_event_vals[] = {
|
|
{64, "acEV_PSTN_INTERNAL_ERROR"},
|
|
{65, "acEV_PSTN_CALL_CONNECTED"},
|
|
{66, "acEV_PSTN_INCOMING_CALL_DETECTED"},
|
|
{67, "acEV_PSTN_CALL_DISCONNECTED"},
|
|
{68, "acEV_PSTN_CALL_RELEASED"},
|
|
{69, "acEV_PSTN_REMOTE_ALERTING"},
|
|
{70, "acEV_PSTN_STARTED"},
|
|
{71, "acEV_PSTN_WARNING"},
|
|
{72, "acEV_ISDN_PROGRESS_INDICATION"},
|
|
{73, "acEV_PSTN_PROCEEDING_INDICATION"},
|
|
{74, "acEV_PSTN_ALARM"},
|
|
{75, "acEV_RESERVED"},
|
|
{76, "acEV_PSTN_LINE_INFO"},
|
|
{77, "acEV_PSTN_LOOP_CONFIRM"},
|
|
{78, "acEV_PSTN_RESTART_CONFIRM"},
|
|
{84, "acEV_ISDN_SETUP_ACK_IN"},
|
|
{85, "acEV_PSTN_CALL_INFORMATION"},
|
|
{128, "acEV_CAS_SEIZURE_DETECTED"},
|
|
{129, "acEV_CAS_CHANNEL_BLOCKED"},
|
|
{130, "acEV_CAS_PROTOCOL_STARTED"},
|
|
{131, "acEV_PSTN_CALL_STATE_RESPONSE"},
|
|
{132, "acEV_CAS_SEIZURE_ACK"},
|
|
{0, NULL}
|
|
};
|
|
|
|
static const value_string actrace_cas_collect_type_vals[] = {
|
|
{0, "COLLECT_TYPE_ADDRESS"},
|
|
{1, "COLLECT_TYPE_ANI"},
|
|
{2, "COLLECT_TYPE_SOURCE_CATEGORY"},
|
|
{3, "COLLECT_TYPE_LINE_CATEGORY"},
|
|
{0, NULL}
|
|
};
|
|
|
|
#define SEND_TYPE_ADDRESS 1
|
|
#define SEND_TYPE_SPECIFIC 2
|
|
#define SEND_TYPE_INTER_EXCHANGE_SWITCH 3
|
|
#define SEND_TYPE_ANI 4
|
|
#define SEND_TYPE_SOURCE_CATEGORY 5
|
|
#define SEND_TYPE_TRANSFER_CAPABILITY 6
|
|
|
|
static const value_string actrace_cas_send_type_vals[] = {
|
|
{SEND_TYPE_ADDRESS, "ADDRESS"},
|
|
{SEND_TYPE_SPECIFIC, "SPECIFIC"},
|
|
{SEND_TYPE_INTER_EXCHANGE_SWITCH, "INTER_EXCHANGE_SWITCH"},
|
|
{SEND_TYPE_ANI, "ANI"},
|
|
{SEND_TYPE_SOURCE_CATEGORY, "SOURCE_CATEGORY"},
|
|
{SEND_TYPE_TRANSFER_CAPABILITY, "TRANSFER_CAPABILITY"},
|
|
{0, NULL}
|
|
};
|
|
|
|
static const value_string actrace_cas_cause_vals[] = {
|
|
{1, "UNASSIGNED_NUMBER"},
|
|
{2, "NO_ROUTE_TO_TRANSIT_NET"},
|
|
{3, "NO_ROUTE_TO_DESTINATION"},
|
|
{6, "CHANNEL_UNACCEPTABLE"},
|
|
{7, "CALL_AWARDED_AND"},
|
|
{8, "PREEMPTION"},
|
|
{16, "NORMAL_CALL_CLEAR"},
|
|
{17, "USER_BUSY"},
|
|
{18, "NO_USER_RESPONDING"},
|
|
{19, "NO_ANSWER_FROM_USER_ALERTED"},
|
|
{20, "ACCEPT_DONE"},
|
|
{21, "CALL_REJECTED"},
|
|
{22, "NUMBER_CHANGED"},
|
|
{26, "NON_SELECTED_USER_CLEARING"},
|
|
{27, "DEST_OUT_OF_ORDER"},
|
|
{28, "INVALID_NUMBER_FORMAT"},
|
|
{29, "FACILITY_REJECT"},
|
|
{30, "RESPONSE_TO_STATUS_ENQUIRY"},
|
|
{31, "NORMAL_UNSPECIFIED"},
|
|
{32, "CIRCUIT_CONGESTION"},
|
|
{33, "USER_CONGESTION"},
|
|
{34, "NO_CIRCUIT_AVAILABLE"},
|
|
{38, "NETWORK_OUT_OF_ORDER"},
|
|
{41, "NETWORK_TEMPORARY_FAILURE"},
|
|
{42, "NETWORK_CONGESTION"},
|
|
{43, "ACCESS_INFORMATION_DISCARDED"},
|
|
{44, "REQUESTED_CIRCUIT_NOT_AVAILABLE"},
|
|
{47, "RESOURCE_UNAVAILABLE_UNSPECIFIED"},
|
|
{39, "PERM_FR_MODE_CONN_OUT_OF_S"},
|
|
{40, "PERM_FR_MODE_CONN_OPERATIONAL"},
|
|
{46, "PRECEDENCE_CALL_BLOCKED"},
|
|
{49, "QUALITY_OF_SERVICE_UNAVAILABLE"},
|
|
{50, "REQUESTED_FAC_NOT_SUBSCRIBED"},
|
|
{57, "BC_NOT_AUTHORIZED"},
|
|
{58, "BC_NOT_PRESENTLY_AVAILABLE"},
|
|
{63, "SERVICE_NOT_AVAILABLE"},
|
|
{53, "CUG_OUT_CALLS_BARRED"},
|
|
{55, "CUG_INC_CALLS_BARRED"},
|
|
{62, "ACCES_INFO_SUBS_CLASS_INCONS"},
|
|
{65, "BC_NOT_IMPLEMENTED"},
|
|
{66, "CHANNEL_TYPE_NOT_IMPLEMENTED"},
|
|
{69, "REQUESTED_FAC_NOT_IMPLEMENTED"},
|
|
{70, "ONLY_RESTRICTED_INFO_BEARER"},
|
|
{79, "SERVICE_NOT_IMPLEMENTED_UNSPECIFIED"},
|
|
{81, "INVALID_CALL_REF"},
|
|
{82, "IDENTIFIED_CHANNEL_NOT_EXIST"},
|
|
{83, "SUSPENDED_CALL_BUT_CALL_ID_NOT_EXIST"},
|
|
{84, "CALL_ID_IN_USE"},
|
|
{85, "NO_CALL_SUSPENDED"},
|
|
{86, "CALL_HAVING_CALL_ID_CLEARED"},
|
|
{88, "INCOMPATIBLE_DESTINATION"},
|
|
{91, "INVALID_TRANSIT_NETWORK_SELECTION"},
|
|
{95, "INVALID_MESSAGE_UNSPECIFIED"},
|
|
{87, "NOT_CUG_MEMBER"},
|
|
{90, "CUG_NON_EXISTENT"},
|
|
{96, "MANDATORY_IE_MISSING"},
|
|
{97, "MESSAGE_TYPE_NON_EXISTENT"},
|
|
{98, "MESSAGE_STATE_INCONSISTENCY"},
|
|
{99, "NON_EXISTENT_IE"},
|
|
{100, "INVALID_IE_CONTENT"},
|
|
{101, "MESSAGE_NOT_COMPATIBLE"},
|
|
{102, "RECOVERY_ON_TIMER_EXPIRY"},
|
|
{111, "PROTOCOL_ERROR_UNSPECIFIED"},
|
|
{127, "INTERWORKING_UNSPECIFIED"},
|
|
{128, "ACU_CAUSE_ACU_BAD_ADDRESS"},
|
|
{129, "ACU_CAUSE_ACU_BAD_SERVICE"},
|
|
{130, "ACU_CAUSE_ACU_COLLISION"},
|
|
{131, "ACU_CAUSE_ACU_FAC_REJECTED"},
|
|
{255, "ACU_NETWORK_CAUSE_NIL"},
|
|
{200, "C_ALREADY_BLOCKED"},
|
|
{201, "C_CHANNEL_BLOCKED"},
|
|
{202, "C_BLOCKING_DONE"},
|
|
{203, "C_ALREADY_UNBLOCKED"},
|
|
{204, "C_UNBLOCKING_DONE"},
|
|
{260, "CLRN_MFRn_A4"},
|
|
{261, "CLRN_MFRn_B1"},
|
|
{262, "CLRN_MFRn_B2"},
|
|
{263, "CLRN_MFRn_B3"},
|
|
{264, "CLRN_MFRn_B4"},
|
|
{265, "CLRN_MFRn_B5"},
|
|
{266, "CLRN_MFRn_B6"},
|
|
{267, "CLRN_MFRn_B7"},
|
|
{268, "CLRN_MFRn_B8"},
|
|
{269, "CLRN_MFRn_B9"},
|
|
{270, "CLRN_MFRn_B10"},
|
|
{271, "CLRN_MFRn_B11"},
|
|
{272, "CLRN_MFRn_B12"},
|
|
{273, "CLRN_MFRn_B13"},
|
|
{274, "CLRN_MFRn_B14"},
|
|
{275, "CLRN_MFRn_B15"},
|
|
{300, "ACURC_BUSY"},
|
|
{301, "ACURC_NOPROCEED"},
|
|
{302, "ACURC_NOANSWER"},
|
|
{303, "ACURC_NOAUTOANSWER"},
|
|
{304, "ACURC_CONGESTED"},
|
|
{305, "ACURC_INCOMING"},
|
|
{306, "ACURC_NOLINE"},
|
|
{307, "ACURC_ERRNUM"},
|
|
{308, "ACURC_INHNUM"},
|
|
{309, "ACURC_2MNUM"},
|
|
{310, "ACURC_HUNGUP"},
|
|
{311, "ACURC_NETWORK_ERROR"},
|
|
{312, "ACURC_TIMEOUT"},
|
|
{313, "ACURC_BAD_SERVICE"},
|
|
{314, "ACURC_INTERNAL"},
|
|
{315, "ACURC_OK"},
|
|
{316, "ACURC_BL_TIMEOUT"},
|
|
{317, "ACURC_IN_CALL"},
|
|
{318, "ACURC_CLEAR_RQ"},
|
|
{0, NULL}
|
|
};
|
|
|
|
/* ISDN */
|
|
#define PSTN_TO_BLADE 0x49446463
|
|
#define BLADE_TO_PSTN 0x49644443
|
|
|
|
static const value_string actrace_isdn_direction_vals[] = {
|
|
{PSTN_TO_BLADE, "Blade <-- PSTN"},
|
|
{BLADE_TO_PSTN, "Blade --> PSTN"},
|
|
{0, NULL}
|
|
};
|
|
|
|
/*
|
|
* Define the tree for actrace
|
|
*/
|
|
static int ett_actrace = -1;
|
|
|
|
/*
|
|
* Define the tap for actrace
|
|
*/
|
|
static int actrace_tap = -1;
|
|
static actrace_info_t *actrace_pi;
|
|
|
|
/*
|
|
* Here are the global variable associated with
|
|
* the user definable characteristics of the dissection
|
|
*/
|
|
static guint global_actrace_udp_port = UDP_PORT_ACTRACE;
|
|
|
|
/* Some basic utility functions that are specific to this dissector */
|
|
static int is_actrace(tvbuff_t *tvb, gint offset);
|
|
|
|
/*
|
|
* The dissect functions
|
|
*/
|
|
static void dissect_actrace_cas(tvbuff_t *tvb, packet_info *pinfo, proto_tree *actrace_tree);
|
|
static void dissect_actrace_isdn(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
|
|
proto_tree *actrace_tree);
|
|
|
|
/************************************************************************
|
|
* dissect_actrace - The dissector for the AudioCodes Trace prtocol
|
|
************************************************************************/
|
|
static int dissect_actrace(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_tree *actrace_tree;
|
|
proto_item *ti;
|
|
int actrace_protocol;
|
|
|
|
/* Initialize variables */
|
|
actrace_tree = NULL;
|
|
|
|
/*
|
|
* Check to see whether we're really dealing with AC trace by looking
|
|
* for a valid "source" and fixed len for CAS; and the direction for ISDN.
|
|
* This isn't infallible, but its cheap and its better than nothing.
|
|
*/
|
|
actrace_protocol = is_actrace(tvb, 0);
|
|
if (actrace_protocol != NOT_ACTRACE)
|
|
{
|
|
/*
|
|
* Set the columns now, so that they'll be set correctly if we throw
|
|
* an exception. We can set them later as well....
|
|
*/
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "AC_TRACE");
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
if (tree)
|
|
{
|
|
/* Create our actrace subtree */
|
|
ti = proto_tree_add_item(tree,proto_actrace,tvb,0,-1, FALSE);
|
|
actrace_tree = proto_item_add_subtree(ti, ett_actrace);
|
|
}
|
|
|
|
switch (actrace_protocol)
|
|
{
|
|
case ACTRACE_CAS:
|
|
dissect_actrace_cas(tvb, pinfo, actrace_tree);
|
|
break;
|
|
case ACTRACE_ISDN:
|
|
dissect_actrace_isdn(tvb, pinfo, tree, actrace_tree);
|
|
break;
|
|
}
|
|
return tvb_length(tvb);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Dissect an individual actrace CAS message */
|
|
static void dissect_actrace_cas(tvbuff_t *tvb, packet_info *pinfo, proto_tree *actrace_tree)
|
|
{
|
|
/* Declare variables */
|
|
gint sectionlen;
|
|
gint tvb_sectionend,tvb_sectionbegin;
|
|
gint32 value, function, trunk, bchannel, source, event, curr_state, next_state;
|
|
gint32 par0, par1, par2;
|
|
gchar *frame_label = NULL;
|
|
int direction = 0;
|
|
int offset = 0;
|
|
|
|
/* Initialize variables */
|
|
tvb_sectionend = 0;
|
|
tvb_sectionbegin = tvb_sectionend;
|
|
sectionlen = 0;
|
|
value = 0;
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "AC_CAS");
|
|
|
|
value = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_int(actrace_tree, hf_actrace_cas_time, tvb, offset, 4, value);
|
|
offset += 4;
|
|
|
|
source = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_int(actrace_tree, hf_actrace_cas_source, tvb, offset, 4, source);
|
|
offset += 4;
|
|
|
|
curr_state = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_int(actrace_tree, hf_actrace_cas_current_state, tvb, offset, 4, curr_state);
|
|
offset += 4;
|
|
|
|
event = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_int(actrace_tree, hf_actrace_cas_event, tvb, offset, 4, event);
|
|
offset += 4;
|
|
|
|
next_state = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_int(actrace_tree, hf_actrace_cas_next_state, tvb, offset, 4, next_state);
|
|
offset += 4;
|
|
|
|
function = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_int(actrace_tree, hf_actrace_cas_function, tvb, offset, 4, function);
|
|
offset += 4;
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s|%d|%s|%d|%s|",
|
|
val_to_str(source, actrace_cas_source_vals_short, "ukn"),
|
|
curr_state,
|
|
val_to_str(event, actrace_cas_event_vals, "%d"),
|
|
next_state,
|
|
val_to_str(function, actrace_cas_function_vals, "%d"));
|
|
|
|
par0 = tvb_get_ntohl(tvb, offset);
|
|
switch (function)
|
|
{
|
|
case SEND_EVENT:
|
|
proto_tree_add_text(actrace_tree, tvb, offset, 4,
|
|
"Parameter 0: %s", val_to_str(par0,
|
|
actrace_cas_pstn_event_vals, "Unknown (%d)"));
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s|",
|
|
val_to_str(par0, actrace_cas_pstn_event_vals, "%d"));
|
|
break;
|
|
case CHANGE_COLLECT_TYPE:
|
|
proto_tree_add_text(actrace_tree, tvb, offset, 4,
|
|
"Parameter 0: %s", val_to_str(par0,
|
|
actrace_cas_collect_type_vals, "Unknown (%d)"));
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s|",
|
|
val_to_str(par0, actrace_cas_collect_type_vals, "%d"));
|
|
break;
|
|
case SEND_MF:
|
|
case SEND_DEST_NUM:
|
|
proto_tree_add_text(actrace_tree, tvb, offset, 4,
|
|
"Parameter 0: %s", val_to_str(par0,
|
|
actrace_cas_send_type_vals, "Unknown (%d)"));
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s|",
|
|
val_to_str(par0, actrace_cas_send_type_vals, "%d"));
|
|
break;
|
|
default:
|
|
proto_tree_add_int(actrace_tree, hf_actrace_cas_par0, tvb, offset, 4, par0);
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%d|", par0);
|
|
}
|
|
offset += 4;
|
|
|
|
par1 = tvb_get_ntohl(tvb, offset);
|
|
if (function == SEND_EVENT) {
|
|
proto_tree_add_text(actrace_tree, tvb, offset, 4,
|
|
"Parameter 1: %s", val_to_str(par1, actrace_cas_cause_vals, "Unknown (%d)"));
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s|",
|
|
val_to_str(par1, actrace_cas_cause_vals, "%d"));
|
|
} else {
|
|
proto_tree_add_int(actrace_tree, hf_actrace_cas_par1, tvb, offset, 4, par1);
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%d|", par1);
|
|
}
|
|
offset += 4;
|
|
|
|
par2 = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_int(actrace_tree, hf_actrace_cas_par2, tvb, offset, 4, par2);
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%d|", par2);
|
|
offset += 4;
|
|
|
|
trunk = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_int(actrace_tree, hf_actrace_cas_trunk, tvb, offset, 4, trunk);
|
|
offset += 4;
|
|
|
|
bchannel = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_int(actrace_tree, hf_actrace_cas_bchannel, tvb, offset, 4, bchannel);
|
|
offset += 4;
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_prepend_fstr(pinfo->cinfo, COL_INFO, "t%db%d|", trunk, bchannel);
|
|
|
|
value = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_int(actrace_tree, hf_actrace_cas_connection_id, tvb, offset, 4, value);
|
|
offset += 4;
|
|
|
|
/* Add tap info for the Voip Graph */
|
|
if (source == ACTRACE_CAS_SOURCE_DSP) {
|
|
direction = 1;
|
|
if ( (event >= ACTRACE_CAS_EV_11) && (event <= ACTRACE_CAS_EV_00 ) ) {
|
|
frame_label = ep_strdup_printf("AB: %s", val_to_str(event, actrace_cas_event_ab_vals, "ERROR") );
|
|
} else if ( (event >= 32) && (event <= 46 ) ) { /* is an MF tone */
|
|
frame_label = ep_strdup_printf("MF: %s", val_to_str(event, actrace_cas_mf_vals, "ERROR") );
|
|
} else if ( (event == ACTRACE_CAS_EV_DTMF ) || (event == ACTRACE_CAS_EV_FIRST_DIGIT ) ) { /* DTMF digit */
|
|
frame_label = ep_strdup_printf("DTMF: %u", par0 );
|
|
}
|
|
} else if (source == ACTRACE_CAS_SOURCE_TABLE) {
|
|
direction = 0;
|
|
if (function == SEND_MF) {
|
|
if (par0 == SEND_TYPE_SPECIFIC ) {
|
|
frame_label = ep_strdup_printf("MF: %u", par1);
|
|
} else if (par0 == SEND_TYPE_ADDRESS ) {
|
|
frame_label = ep_strdup("MF: DNIS digit");
|
|
} else if (par0 == SEND_TYPE_ANI ) {
|
|
frame_label = ep_strdup("MF: ANI digit");
|
|
} else if (par0 == SEND_TYPE_SOURCE_CATEGORY ) {
|
|
frame_label = ep_strdup("MF: src_category");
|
|
} else if (par0 == SEND_TYPE_TRANSFER_CAPABILITY ) {
|
|
frame_label = ep_strdup("MF: trf_capability");
|
|
} else if (par0 == SEND_TYPE_INTER_EXCHANGE_SWITCH ) {
|
|
frame_label = ep_strdup("MF: inter_exch_sw");
|
|
}
|
|
} else if (function == SEND_CAS) {
|
|
frame_label = ep_strdup_printf("AB: %s", val_to_str(ACTRACE_CAS_EV_00-par0, actrace_cas_event_ab_vals, "ERROR"));
|
|
} else if (function == SEND_DEST_NUM) {
|
|
if (par0 == SEND_TYPE_ADDRESS ) {
|
|
frame_label = ep_strdup("DTMF/MF: sending DNIS");
|
|
} else if (par0 == SEND_TYPE_ANI ) {
|
|
frame_label = ep_strdup("DTMF/MF: sending ANI");
|
|
}
|
|
}
|
|
}
|
|
|
|
if (frame_label != NULL) {
|
|
/* Initialise packet info for passing to tap */
|
|
actrace_pi = ep_alloc(sizeof(actrace_info_t));
|
|
|
|
actrace_pi->type = ACTRACE_CAS;
|
|
actrace_pi->direction = direction;
|
|
actrace_pi->trunk = trunk;
|
|
actrace_pi->cas_bchannel = bchannel;
|
|
actrace_pi->cas_frame_label = frame_label;
|
|
/* Report this packet to the tap */
|
|
tap_queue_packet(actrace_tap, pinfo, actrace_pi);
|
|
}
|
|
}
|
|
|
|
/* Dissect an individual actrace ISDN message */
|
|
static void dissect_actrace_isdn(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
|
|
proto_tree *actrace_tree)
|
|
{
|
|
/* Declare variables */
|
|
gint len;
|
|
gint32 value, trunk;
|
|
tvbuff_t *next_tvb;
|
|
int offset = 0;
|
|
|
|
len = tvb_get_ntohs(tvb, 44);
|
|
|
|
value = tvb_get_ntohl(tvb, offset+4);
|
|
proto_tree_add_int(actrace_tree, hf_actrace_isdn_direction, tvb, offset+4, 4, value);
|
|
|
|
offset += 8;
|
|
trunk = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_int(actrace_tree, hf_actrace_isdn_trunk, tvb, offset, 2, trunk);
|
|
|
|
offset = 44;
|
|
proto_tree_add_int(actrace_tree, hf_actrace_isdn_length, tvb, offset, 2, len);
|
|
|
|
|
|
/* if it is a q931 packet (we don't want LAPD packets for Voip Graph) add tap info */
|
|
if (len > 4) {
|
|
/* Initialise packet info for passing to tap */
|
|
actrace_pi = ep_alloc(sizeof(actrace_info_t));
|
|
|
|
actrace_pi->type = ACTRACE_ISDN;
|
|
actrace_pi->direction = (value==PSTN_TO_BLADE?1:0);
|
|
actrace_pi->trunk = trunk;
|
|
|
|
/* Report this packet to the tap */
|
|
tap_queue_packet(actrace_tap, pinfo, actrace_pi);
|
|
}
|
|
|
|
/* Dissect lapd payload */
|
|
offset += 2 ;
|
|
next_tvb = tvb_new_subset(tvb, offset, len, len);
|
|
call_dissector(lapd_handle, next_tvb, pinfo, tree);
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "AC_ISDN");
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_prepend_fstr(pinfo->cinfo, COL_INFO, "Trunk:%d Blade %s PSTN "
|
|
, trunk, value==PSTN_TO_BLADE?"<--":"-->");
|
|
}
|
|
|
|
/* Register all the bits needed with the filtering engine */
|
|
void proto_register_actrace(void)
|
|
{
|
|
static hf_register_info hf[] =
|
|
{
|
|
/* CAS */
|
|
{ &hf_actrace_cas_time,
|
|
{ "Time", "actrace.cas.time", FT_INT32, BASE_DEC, NULL, 0x0,
|
|
"Capture Time", HFILL }},
|
|
{ &hf_actrace_cas_source,
|
|
{ "Source", "actrace.cas.source", FT_INT32, BASE_DEC, VALS(actrace_cas_source_vals), 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_actrace_cas_current_state,
|
|
{ "Current State", "actrace.cas.curr_state", FT_INT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_actrace_cas_event,
|
|
{ "Event", "actrace.cas.event", FT_INT32, BASE_DEC, VALS(actrace_cas_event_vals), 0x0,
|
|
"New Event", HFILL }},
|
|
{ &hf_actrace_cas_next_state,
|
|
{ "Next State", "actrace.cas.next_state", FT_INT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_actrace_cas_function,
|
|
{ "Function", "actrace.cas.function", FT_INT32, BASE_DEC, VALS(actrace_cas_function_vals), 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_actrace_cas_par0,
|
|
{ "Parameter 0", "actrace.cas.par0", FT_INT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_actrace_cas_par1,
|
|
{ "Parameter 1", "actrace.cas.par1", FT_INT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_actrace_cas_par2,
|
|
{ "Parameter 2", "actrace.cas.par2", FT_INT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_actrace_cas_trunk,
|
|
{ "Trunk Number", "actrace.cas.trunk", FT_INT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_actrace_cas_bchannel,
|
|
{ "BChannel", "actrace.cas.bchannel", FT_INT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_actrace_cas_connection_id,
|
|
{ "Connection ID", "actrace.cas.conn_id", FT_INT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
/* ISDN */
|
|
{ &hf_actrace_isdn_trunk,
|
|
{ "Trunk Number", "actrace.isdn.trunk", FT_INT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_actrace_isdn_direction,
|
|
{ "Direction", "actrace.isdn.dir", FT_INT32, BASE_DEC, VALS(actrace_isdn_direction_vals), 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_actrace_isdn_length,
|
|
{ "Length", "actrace.isdn.length", FT_INT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
};
|
|
|
|
static gint *ett[] =
|
|
{
|
|
&ett_actrace,
|
|
};
|
|
|
|
module_t *actrace_module;
|
|
|
|
/* Register protocol */
|
|
proto_actrace = proto_register_protocol("AudioCodes Trunk Trace", "ACtrace", "actrace");
|
|
proto_register_field_array(proto_actrace, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
/* Register our configuration options */
|
|
actrace_module = prefs_register_protocol(proto_actrace, proto_reg_handoff_actrace);
|
|
|
|
prefs_register_uint_preference(actrace_module, "udp_port",
|
|
"AudioCodes Trunk Trace UDP port",
|
|
"Set the UDP port for AudioCodes Trunk Traces."
|
|
"Use http://x.x.x.x/TrunkTraces to enable the traces in the Blade",
|
|
10, &global_actrace_udp_port);
|
|
|
|
prefs_register_obsolete_preference(actrace_module, "display_dissect_tree");
|
|
|
|
actrace_tap = register_tap("actrace");
|
|
}
|
|
|
|
/* The registration hand-off routine */
|
|
void proto_reg_handoff_actrace(void)
|
|
{
|
|
static gboolean actrace_prefs_initialized = FALSE;
|
|
static dissector_handle_t actrace_handle;
|
|
static guint actrace_udp_port;
|
|
|
|
if (!actrace_prefs_initialized)
|
|
{
|
|
actrace_handle = new_create_dissector_handle(dissect_actrace, proto_actrace);
|
|
/* Get a handle for the lapd dissector. */
|
|
lapd_handle = find_dissector("lapd");
|
|
actrace_prefs_initialized = TRUE;
|
|
}
|
|
else
|
|
{
|
|
dissector_delete("udp.port", actrace_udp_port, actrace_handle);
|
|
}
|
|
|
|
/* Set our port number for future use */
|
|
actrace_udp_port = global_actrace_udp_port;
|
|
|
|
dissector_add("udp.port", global_actrace_udp_port, actrace_handle);
|
|
}
|
|
|
|
/*
|
|
* is_actrace - A function for determining whether there is a
|
|
* AudioCodes packet at offset in tvb. The packet could be
|
|
* a CAS, ISDN or other Trunk protocol. Here we are only
|
|
* trying to decode CAS or ISDN protocols
|
|
*
|
|
* Parameter:
|
|
* tvb - The tvbuff in which we are looking for
|
|
* offset - The offset in tvb at which we are looking for
|
|
*
|
|
* Return: NOT_ACTRACE if there isn't an AutioCode trace packet at offset
|
|
* in tvb, ACTRACE_CAS if there's a CAS packet there, ACTRACE_ISDN if
|
|
* there's an ISDN packet there.
|
|
*/
|
|
static int is_actrace(tvbuff_t *tvb, gint offset)
|
|
{
|
|
gint tvb_len;
|
|
gint32 source, isdn_header;
|
|
|
|
tvb_len = tvb_reported_length(tvb);
|
|
|
|
/* is a CAS packet?
|
|
* the CAS masages are 48 byte fixed and the sorce should be 0,1 or 2 (DSP, User or Table)
|
|
*/
|
|
source = tvb_get_ntohl(tvb, offset+4);
|
|
if ( (tvb_len == 48) && ((source > -1) && (source <3)) )
|
|
return ACTRACE_CAS;
|
|
/* is ISDN packet?
|
|
* the ISDN packets have 0x49446463 for packets from PSTN to the Blade and
|
|
* 0x49644443 for packets from the Blade to the PSTN at offset 4
|
|
*/
|
|
isdn_header = tvb_get_ntohl(tvb, offset+4);
|
|
if ( (tvb_len >= 50) && ( (isdn_header == PSTN_TO_BLADE) || (isdn_header == BLADE_TO_PSTN)) )
|
|
return ACTRACE_ISDN;
|
|
return NOT_ACTRACE;
|
|
}
|