epan/dissectors/packet-h248_2.c

   1 /*
   2  *  packet-h248_2.c
   3  *
   4  * $Id$
   5  *
   6  *  H.248.2
   7  *  Gateway control protocol: Facsimile, text conversation and call discrimination packages
   8  *
   9  *  (c) 2012, Anders broman <anders.broman@ericsson.com>
  10  *
  11  * Wireshark - Network traffic analyzer
  12  * By Gerald Combs <gerald@wireshark.org>
  13  * Copyright 1998 Gerald Combs
  14  *
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * as published by the Free Software Foundation; either version 2
  18  * of the License, or (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program; if not, write to the Free Software
  27  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  28  *
  29  */
  30
  31 #include "config.h"
  32
  33 #include "packet-h248.h"
  34 #define PNAME  "H.248.2"
  35 #define PSNAME "H248_2"
  36 #define PFNAME "h248.2"
  37
  38 static int proto_h248_2 = -1;
  39
  40 /* static int hf_h248_2_dtone_evt = -1; */
  41 static int hf_h248_2_dtone_dtt_obs_evt = -1;
  42 static int hf_h248_2_dtone_dtt_obs_evt_val = -1;
  43
  44 static gint ett_h248_2 = -1;
  45 static gint ett_h248_2_dtone_dtt_obs_evt = -1;
  46
  47
  48 static const value_string hf_h248_2_dtone_dtt_obs_evt_val_values[] = {
  49         /*For FAX*/
  50         { 0x0001, "CNG"},               /* A T.30 fax calling tone */
  51         { 0x0002, "V21flag"},   /* V21 tone and flags for fax answering */
  52         /* For TEXT */
  53         { 0x0003, "XCI"},               /* A V.18 XCI */
  54         { 0x0004, "V18txp1"},   /* A V.18 txp signal in channel V.21(1) */
  55         { 0x0005, "V18txp2"},   /* A V.18 txp signal in channel V.21(2) */
  56         { 0x0006, "BellHi"},   /* A Bell 103 carrier on the high channel */
  57         { 0x0007, "BellLo"},    /* A Bell 103 low channel */
  58         { 0x0008, "Baudot45"},  /* Baudot45 initial carrier and characters */
  59         { 0x0009, "Baudot50"},  /* A Baudot50 initial carrier and characters */
  60         { 0x000a, "Edt"},               /* An EDT initial tone and characters */
  61         { 0x000b, "DTMF"},              /* DTMF signals */
  62         { 0x001c, "CTM"},               /* CTM signals */
  63         /* For DATA */
  64         { 0x000c, "Sig"},               /* Modulation signal from a mode only used for data, i.e., not V.21, V.23 nor Bell 103 */
  65         /* Common to TEXT and DATA */
  66         { 0x000d, "CT"},                /* A V.25 calling tone */
  67         { 0x000e, "V21hi"},             /* A V.21 carrier on the higher frequency channel */
  68         { 0x000f, "V21lo"},             /* A V.21 carrier on the low frequency channel */
  69         { 0x0010, "V23hi"},             /* A V.23 high carrier */
  70         { 0x0011, "V23lo"},             /*  A V.23 low carrier */
  71         { 0x0012, "CI"},                /* A V.8 CI with contents in "dtvalue" */
  72         /* Common to FAX, TEXT and DATA */
  73         { 0x0013, "ANS(T.30 CED)"},     /* V.25 ANS, equivalent to T.30 CED from answering terminal */
  74         { 0x0014, "ANSbar"},            /* V.25 ANS with phase reversals" */
  75         { 0x0015, "ANSAM"},                     /* V.8 ANSam */
  76         { 0x0016, "ANSAMbar"},          /* V.8 ANSam with phase reversals */
  77         { 0x0017, "CM"},                        /* V.8 CM with contents in "dtvalue" */
  78         { 0x0018, "CJ"},                        /* V.8 CJ */
  79         { 0x0019, "JM"},                        /* V.8 JM with contents in "dtvalue" */
  80         { 0x001a, "ENDOFSIG"},          /* End of reported signal detected reported for continuous or repeated signals */
  81         { 0x001b, "V8BIS"},                     /* V.8 bis signal, with signal type in parameter V8bistype and value in "dtvalue" */
  82         { 0, NULL }
  83 };
  84
  85 static h248_pkg_param_t h248_2_dtone_dtt_obs_evt_params[] = {
  86         { 0x0001, &hf_h248_2_dtone_dtt_obs_evt_val, h248_param_ber_integer, NULL },
  87         { 0, NULL, NULL, NULL}
  88 };
  89
  90
  91 static const value_string h248_2_ctype_events_vals[] = {
  92         { 0x0001, "Discriminating Tone Detected(dtone)"},
  93         { 0x0002, "Call Type Discrimination Result(calldisres)"},
  94         { 0, NULL }
  95 };
  96
  97 static h248_pkg_evt_t h248_pkg_generic_cause_evts[] = {
  98         { 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},
  99         { 0, NULL, NULL, NULL, NULL}
 100 };
 101
 102
 103
 104 /* Call Type Discrimination Package */
 105 static const h248_package_t h248_pkg_ctype = {
 106         0x0011,                                         /* Id */
 107         &proto_h248_2,                          /* hfid */
 108         &ett_h248_2,                            /* ett */
 109
 110         NULL,                                           /* value_string param_names */
 111         NULL,                                           /* value_string signal_names */
 112         h248_2_ctype_events_vals,       /* value_string event_names */
 113         NULL,                                           /* value_string stats_names */
 114
 115         NULL,                                           /* properties */
 116         NULL,                                           /* signals */
 117         h248_pkg_generic_cause_evts,                                            /* events */
 118         NULL                                            /* statistics */
 119 };
 120
 121 void proto_register_h248_dot2(void) {
 122         static hf_register_info hf[] = {
 123 #if 0
 124                 { &hf_h248_2_dtone_evt,
 125                         { "Discriminating Tone Type", "h248.2.dtt",
 126                         FT_BYTES, BASE_NONE, NULL, 0,
 127                         NULL, HFILL }
 128                 },
 129 #endif
 130                 { &hf_h248_2_dtone_dtt_obs_evt,
 131                         { "Discriminating Tone Type(dtt)", "h248.2.dtt",
 132                         FT_BYTES, BASE_NONE, NULL, 0,
 133                           NULL, HFILL },
 134                 },
 135                 { &hf_h248_2_dtone_dtt_obs_evt_val,
 136                         { "call type", "h248.2.dtt.val",
 137                         FT_UINT32, BASE_DEC, VALS(hf_h248_2_dtone_dtt_obs_evt_val_values) , 0,
 138                         NULL, HFILL }
 139                 },
 140
 141         };
 142
 143         static gint *ett[] = {
 144                 &ett_h248_2,
 145                 &ett_h248_2_dtone_dtt_obs_evt,
 146         };
 147
 148         proto_h248_2 = proto_register_protocol(PNAME, PSNAME, PFNAME);
 149
 150         proto_register_field_array(proto_h248_2, hf, array_length(hf));
 151
 152         proto_register_subtree_array(ett, array_length(ett));
 153
 154         h248_register_package(&h248_pkg_ctype,MERGE_PKG_HIGH);
 155 }
 156
 157