epan/dissectors/asn1/t38/packet-t38-template.h

   1 /* packet-t38.h
   2  *
   3  * Routines for T38 dissection
   4  * 2003 Hans Viens
   5  * 2004 Alejandro Vaquero, add support to conversation
   6  *
   7  * Wireshark - Network traffic analyzer
   8  * By Gerald Combs <gerald@wireshark.org>
   9  * Copyright 1998 Gerald Combs
  10  *
  11  * SPDX-License-Identifier: GPL-2.0-or-later
  12  */
  13
  14 #include "ws_symbol_export.h"
  15
  16 #define MAX_T38_DATA_ITEMS 4
  17 #define MAX_T38_DESC 128
  18
  19 typedef struct _t38_packet_info {
  20         uint16_t seq_num;       /* UDPTLPacket sequence number */
  21         int32_t type_msg;       /* 0=t30-indicator    1=data */
  22         uint32_t t30ind_value;
  23         uint32_t data_value;    /* standard and speed */
  24         uint32_t setup_frame_number;
  25         uint32_t Data_Field_field_type_value;
  26         uint8_t t30_Facsimile_Control;
  27         char    desc[MAX_T38_DESC]; /* Description used to be displayed in the frame label Graph Analysis */
  28         char    desc_comment[MAX_T38_DESC]; /* Description used to be displayed in the Comment Graph Analysis */
  29         double time_first_t4_data;
  30         uint32_t frame_num_first_t4_data;
  31 } t38_packet_info;
  32
  33
  34 #define MAX_T38_SETUP_METHOD_SIZE 7
  35
  36
  37 /* Info to save the State to reassemble Data (e.g. HDLC) and the Setup (e.g. SDP) in T38 conversations */
  38 typedef struct _t38_conv_info t38_conv_info;
  39
  40 struct _t38_conv_info {
  41
  42         uint32_t reass_ID;
  43         int reass_start_seqnum;
  44         uint32_t reass_start_data_field;
  45         uint32_t reass_data_type;
  46         int32_t last_seqnum; /* used to avoid duplicated seq num shown in the Graph Analysis */
  47         uint32_t packet_lost;
  48         uint32_t burst_lost;
  49         double time_first_t4_data;
  50         uint32_t additional_hdlc_data_field_counter;
  51         int32_t seqnum_prev_data_field;
  52         t38_conv_info *next;
  53
  54 };
  55
  56 /* Info to save the State to reassemble Data (e.g. HDLC) and the Setup (e.g. SDP) in T38 conversations */
  57 typedef struct _t38_conv
  58 {
  59         char    setup_method[MAX_T38_SETUP_METHOD_SIZE + 1];
  60         uint32_t setup_frame_number;
  61         t38_conv_info src_t38_info;
  62         t38_conv_info dst_t38_info;
  63 } t38_conv;
  64
  65 /* Add an T38 conversation with the given details */
  66 WS_DLL_PUBLIC
  67 void t38_add_address(packet_info *pinfo,
  68                      address *addr, int port,
  69                      int other_port,
  70                      const char *setup_method, uint32_t setup_frame_number);
  71
  72
  73 #include "packet-t38-exp.h"
  74
  75
  76