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/* packet-t38.h
*
* Routines for T38 dissection
* 2003 Hans Viens
* 2004 Alejandro Vaquero, add support to conversation
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "ws_symbol_export.h"
#define MAX_T38_DATA_ITEMS 4
#define MAX_T38_DESC 128
typedef struct _t38_packet_info {
guint16 seq_num; /* UDPTLPacket sequence number */
gint32 type_msg; /* 0=t30-indicator 1=data */
guint32 t30ind_value;
guint32 data_value; /* standard and speed */
guint32 setup_frame_number;
guint32 Data_Field_field_type_value;
guint8 t30_Facsimile_Control;
gchar desc[MAX_T38_DESC]; /* Description used to be displayed in the frame label Graph Anlaysis */
gchar desc_comment[MAX_T38_DESC]; /* Description used to be displayed in the Comment Graph Anlaysis */
double time_first_t4_data;
guint32 frame_num_first_t4_data;
} t38_packet_info;
#define MAX_T38_SETUP_METHOD_SIZE 7
/* Info to save the State to reassemble Data (e.g. HDLC) and the Setup (e.g. SDP) in T38 conversations */
typedef struct _t38_conv_info t38_conv_info;
struct _t38_conv_info {
guint32 reass_ID;
int reass_start_seqnum;
guint32 reass_start_data_field;
guint32 reass_data_type;
gint32 last_seqnum; /* used to avoid duplicated seq num shown in the Graph Analysis */
guint32 packet_lost;
guint32 burst_lost;
double time_first_t4_data;
guint32 additional_hdlc_data_field_counter;
gint32 seqnum_prev_data_field;
t38_conv_info *next;
};
/* Info to save the State to reassemble Data (e.g. HDLC) and the Setup (e.g. SDP) in T38 conversations */
typedef struct _t38_conv
{
gchar setup_method[MAX_T38_SETUP_METHOD_SIZE + 1];
guint32 setup_frame_number;
t38_conv_info src_t38_info;
t38_conv_info dst_t38_info;
} t38_conv;
/* Add an T38 conversation with the given details */
WS_DLL_PUBLIC
void t38_add_address(packet_info *pinfo,
address *addr, int port,
int other_port,
const gchar *setup_method, guint32 setup_frame_number);
#include "packet-t38-exp.h"
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