epan/dissectors/packet-h248_2.c

   1 /*
   2  *  packet-h248_2.c
   3  *
   4  *  H.248.2
   5  *  Gateway control protocol: Facsimile, text conversation and call discrimination packages
   6  *
   7  *  (c) 2012, Anders broman <anders.broman@ericsson.com>
   8  *
   9  * Wireshark - Network traffic analyzer
  10  * By Gerald Combs <gerald@wireshark.org>
  11  * Copyright 1998 Gerald Combs
  12  *
  13  * SPDX-License-Identifier: GPL-2.0-or-later
  14  *
  15  */
  16
  17 #include "config.h"
  18
  19 #include "packet-h248.h"
  20
  21 void proto_register_h248_dot2(void);
  22
  23 #define PNAME  "H.248.2"
  24 #define PSNAME "H248_2"
  25 #define PFNAME "h248.2"
  26
  27 static int proto_h248_2;
  28
  29 /* static int hf_h248_2_dtone_evt; */
  30 static int hf_h248_2_dtone_dtt_obs_evt;
  31 static int hf_h248_2_dtone_dtt_obs_evt_val;
  32
  33 static int ett_h248_2;
  34 static int ett_h248_2_dtone_dtt_obs_evt;
  35
  36
  37 static const value_string hf_h248_2_dtone_dtt_obs_evt_val_values[] = {
  38     /*For FAX*/
  39     { 0x0001, "CNG"},           /* A T.30 fax calling tone */
  40     { 0x0002, "V21flag"},       /* V21 tone and flags for fax answering */
  41     /* For TEXT */
  42     { 0x0003, "XCI"},           /* A V.18 XCI */
  43     { 0x0004, "V18txp1"},       /* A V.18 txp signal in channel V.21(1) */
  44     { 0x0005, "V18txp2"},       /* A V.18 txp signal in channel V.21(2) */
  45     { 0x0006, "BellHi"},        /* A Bell 103 carrier on the high channel */
  46     { 0x0007, "BellLo"},        /* A Bell 103 low channel */
  47     { 0x0008, "Baudot45"},      /* Baudot45 initial carrier and characters */
  48     { 0x0009, "Baudot50"},      /* A Baudot50 initial carrier and characters */
  49     { 0x000a, "Edt"},           /* An EDT initial tone and characters */
  50     { 0x000b, "DTMF"},          /* DTMF signals */
  51     { 0x001c, "CTM"},           /* CTM signals */
  52     /* For DATA */
  53     { 0x000c, "Sig"},           /* Modulation signal from a mode only used for data, i.e., not V.21, V.23 nor Bell 103 */
  54     /* Common to TEXT and DATA */
  55     { 0x000d, "CT"},            /* A V.25 calling tone */
  56     { 0x000e, "V21hi"},         /* A V.21 carrier on the higher frequency channel */
  57     { 0x000f, "V21lo"},         /* A V.21 carrier on the low frequency channel */
  58     { 0x0010, "V23hi"},         /* A V.23 high carrier */
  59     { 0x0011, "V23lo"},         /*  A V.23 low carrier */
  60     { 0x0012, "CI"},            /* A V.8 CI with contents in "dtvalue" */
  61     /* Common to FAX, TEXT and DATA */
  62     { 0x0013, "ANS(T.30 CED)"}, /* V.25 ANS, equivalent to T.30 CED from answering terminal */
  63     { 0x0014, "ANSbar"},        /* V.25 ANS with phase reversals" */
  64     { 0x0015, "ANSAM"},         /* V.8 ANSam */
  65     { 0x0016, "ANSAMbar"},      /* V.8 ANSam with phase reversals */
  66     { 0x0017, "CM"},            /* V.8 CM with contents in "dtvalue" */
  67     { 0x0018, "CJ"},            /* V.8 CJ */
  68     { 0x0019, "JM"},            /* V.8 JM with contents in "dtvalue" */
  69     { 0x001a, "ENDOFSIG"},      /* End of reported signal detected reported for continuous or repeated signals */
  70     { 0x001b, "V8BIS"},         /* V.8 bis signal, with signal type in parameter V8bistype and value in "dtvalue" */
  71     { 0, NULL }
  72 };
  73
  74 static h248_pkg_param_t h248_2_dtone_dtt_obs_evt_params[] = {
  75     { 0x0001, &hf_h248_2_dtone_dtt_obs_evt_val, h248_param_ber_integer, NULL },
  76     { 0, NULL, NULL, NULL}
  77 };
  78
  79
  80 static const value_string h248_2_ctype_events_vals[] = {
  81     { 0x0001, "Discriminating Tone Detected(dtone)"},
  82     { 0x0002, "Call Type Discrimination Result(calldisres)"},
  83     { 0, NULL }
  84 };
  85
  86 static h248_pkg_evt_t h248_pkg_generic_cause_evts[] = {
  87     { 0x0001, &hf_h248_2_dtone_dtt_obs_evt, &ett_h248_2_dtone_dtt_obs_evt, h248_2_dtone_dtt_obs_evt_params, h248_2_ctype_events_vals},
  88     { 0, NULL, NULL, NULL, NULL}
  89 };
  90
  91
  92
  93 /* Call Type Discrimination Package */
  94 static h248_package_t h248_pkg_ctype = {
  95     0x0011,                     /* Id */
  96     &proto_h248_2,              /* hfid */
  97     &ett_h248_2,                /* ett */
  98
  99     NULL,                       /* value_string param_names */
 100     NULL,                       /* value_string signal_names */
 101     h248_2_ctype_events_vals,   /* value_string event_names */
 102     NULL,                       /* value_string stats_names */
 103
 104     NULL,                       /* properties */
 105     NULL,                       /* signals */
 106     h248_pkg_generic_cause_evts,                        /* events */
 107     NULL                        /* statistics */
 108 };
 109
 110 void proto_register_h248_dot2(void) {
 111     static hf_register_info hf[] = {
 112 #if 0
 113         { &hf_h248_2_dtone_evt,
 114             { "Discriminating Tone Type", "h248.2.dtt",
 115             FT_BYTES, BASE_NONE, NULL, 0,
 116             NULL, HFILL }
 117         },
 118 #endif
 119         { &hf_h248_2_dtone_dtt_obs_evt,
 120             { "Discriminating Tone Type(dtt)", "h248.2.dtt",
 121             FT_BYTES, BASE_NONE, NULL, 0,
 122                           NULL, HFILL },
 123         },
 124         { &hf_h248_2_dtone_dtt_obs_evt_val,
 125             { "call type", "h248.2.dtt.val",
 126             FT_UINT32, BASE_DEC, VALS(hf_h248_2_dtone_dtt_obs_evt_val_values) , 0,
 127             NULL, HFILL }
 128         },
 129
 130     };
 131
 132     static int *ett[] = {
 133         &ett_h248_2,
 134         &ett_h248_2_dtone_dtt_obs_evt,
 135     };
 136
 137     proto_h248_2 = proto_register_protocol(PNAME, PSNAME, PFNAME);
 138
 139     proto_register_field_array(proto_h248_2, hf, array_length(hf));
 140
 141     proto_register_subtree_array(ett, array_length(ett));
 142
 143     h248_register_package(&h248_pkg_ctype,MERGE_PKG_HIGH);
 144 }
 145
 146 /*
 147  * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
 148  *
 149  * Local variables:
 150  * c-basic-offset: 4
 151  * tab-width: 8
 152  * indent-tabs-mode: nil
 153  * End:
 154  *
 155  * vi: set shiftwidth=4 tabstop=8 expandtab:
 156  * :indentSize=4:tabSize=8:noTabs=true:
 157  */