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wireshark/epan/dissectors/packet-actrace.c
Guy Harris 8ed7a73e22 Fix a bunch of warnings. 
Cast away some implicit 64-bit-to-32-bit conversion errors due to use of
sizeof.

Cast away some implicit 64-bit-to-32-bit conversion errors due to use of
strtol() and strtoul().

Change some data types to avoid those implicit conversion warnings.

When assigning a constant to a float, make sure the constant isn't a
double, by appending "f" to the constant.

Constify a bunch of variables, parameters, and return values to
eliminate warnings due to strings being given const qualifiers.  Cast
away those warnings in some cases where an API we don't control forces
us to do so.

Enable a bunch of additional warnings by default.  Note why at least
some of the other warnings aren't enabled.

randpkt.c and text2pcap.c are used to build programs, so they don't need
to be in EXTRA_DIST.

If the user specifies --enable-warnings-as-errors, add -Werror *even if
the user specified --enable-extra-gcc-flags; assume they know what
they're doing and are willing to have the compile fail due to the extra
GCC warnings being treated as errors.

svn path=/trunk/; revision=46748
2012-12-26 05:57:06 +00:00

839 lines
26 KiB
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/* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <epan/packet.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 value_string_ext actrace_cas_mf_vals_ext = VALUE_STRING_EXT_INIT(actrace_cas_mf_vals);
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_STOPPED"},
{48, "EV_MFRn_2_STOPPED"},
{49, "EV_MFRn_3_STOPPED"},
{50, "EV_MFRn_4_STOPPED"},
{51, "EV_MFRn_5_STOPPED"},
{52, "EV_MFRn_6_STOPPED"},
{53, "EV_MFRn_7_STOPPED"},
{54, "EV_MFRn_8_STOPPED"},
{55, "EV_MFRn_9_STOPPED"},
{56, "EV_MFRn_10_STOPPED"},
{57, "EV_MFRn_11_STOPPED"},
{58, "EV_MFRn_12_STOPPED"},
{59, "EV_MFRn_13_STOPPED"},
{60, "EV_MFRn_14_STOPPED"},
{61, "EV_MFRn_15_STOPPED"},
{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"},
{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"},
{1010, "EV_TIMER_EXPIRED10"},
{1020, "EV_DEBOUNCE_TIMER_EXPIRED"},
{1030, "EV_INTER_DIGIT_TIMER_EXPIRED"},
{0, NULL}
};
static value_string_ext actrace_cas_event_vals_ext = VALUE_STRING_EXT_INIT(actrace_cas_event_vals);
#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 value_string_ext actrace_cas_function_vals_ext = VALUE_STRING_EXT_INIT(actrace_cas_function_vals);
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 value_string_ext actrace_cas_pstn_event_vals_ext = VALUE_STRING_EXT_INIT(actrace_cas_pstn_event_vals);
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"},
{39, "PERM_FR_MODE_CONN_OUT_OF_S"},
{40, "PERM_FR_MODE_CONN_OPERATIONAL"},
{41, "NETWORK_TEMPORARY_FAILURE"},
{42, "NETWORK_CONGESTION"},
{43, "ACCESS_INFORMATION_DISCARDED"},
{44, "REQUESTED_CIRCUIT_NOT_AVAILABLE"},
{46, "PRECEDENCE_CALL_BLOCKED"},
{47, "RESOURCE_UNAVAILABLE_UNSPECIFIED"},
{49, "QUALITY_OF_SERVICE_UNAVAILABLE"},
{50, "REQUESTED_FAC_NOT_SUBSCRIBED"},
{53, "CUG_OUT_CALLS_BARRED"},
{55, "CUG_INC_CALLS_BARRED"},
{57, "BC_NOT_AUTHORIZED"},
{58, "BC_NOT_PRESENTLY_AVAILABLE"},
{62, "ACCES_INFO_SUBS_CLASS_INCONS"},
{63, "SERVICE_NOT_AVAILABLE"},
{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"},
{87, "NOT_CUG_MEMBER"},
{88, "INCOMPATIBLE_DESTINATION"},
{90, "CUG_NON_EXISTENT"},
{91, "INVALID_TRANSIT_NETWORK_SELECTION"},
{95, "INVALID_MESSAGE_UNSPECIFIED"},
{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"},
{200, "C_ALREADY_BLOCKED"},
{201, "C_CHANNEL_BLOCKED"},
{202, "C_BLOCKING_DONE"},
{203, "C_ALREADY_UNBLOCKED"},
{204, "C_UNBLOCKING_DONE"},
{255, "ACU_NETWORK_CAUSE_NIL"},
{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}
};
static value_string_ext actrace_cas_cause_vals_ext = VALUE_STRING_EXT_INIT(actrace_cas_cause_vals);
/* 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 variables 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, void *data _U_)
{
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 it's 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, ENC_NA);
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 */
gint32 value, function, trunk, bchannel, source, event, curr_state, next_state;
gint32 par0, par1, par2;
const gchar *frame_label = NULL;
int direction = 0;
int offset = 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;
col_append_fstr(pinfo->cinfo, COL_INFO, "%s|%d|%s|%d|%s|",
val_to_str_const(source, actrace_cas_source_vals_short, "ukn"),
curr_state,
val_to_str_ext(event, &actrace_cas_event_vals_ext, "%d"),
next_state,
val_to_str_ext(function, &actrace_cas_function_vals_ext, "%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_ext(par0,
&actrace_cas_pstn_event_vals_ext, "Unknown (%d)"));
col_append_fstr(pinfo->cinfo, COL_INFO, "%s|",
val_to_str_ext(par0, &actrace_cas_pstn_event_vals_ext, "%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)"));
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)"));
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);
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_ext(par1, &actrace_cas_cause_vals_ext, "Unknown (%d)"));
col_append_fstr(pinfo->cinfo, COL_INFO, "%s|",
val_to_str_ext(par1, &actrace_cas_cause_vals_ext, "%d"));
} else {
proto_tree_add_int(actrace_tree, hf_actrace_cas_par1, tvb, offset, 4, par1);
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);
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;
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);
/* 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_const(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_ext_const(event, &actrace_cas_mf_vals_ext, "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_const(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_new(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_new(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");
col_prepend_fstr(pinfo->cinfo, COL_INFO, "Trunk:%d Blade %s PSTN "
, trunk, value==PSTN_TO_BLADE?"<--":"-->");
}
/*
* 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 AudioCodes 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 messages are 48 byte fixed and the source 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;
}
/* 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|BASE_EXT_STRING, &actrace_cas_event_vals_ext, 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|BASE_EXT_STRING, &actrace_cas_function_vals_ext, 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_uint("udp.port", actrace_udp_port, actrace_handle);
}
/* Set our port number for future use */
actrace_udp_port = global_actrace_udp_port;
dissector_add_uint("udp.port", global_actrace_udp_port, actrace_handle);
}
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