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/*
* packet-h248_q1950.c
* Q.1950 annex A
*
* (c) 2006, Anders Broman <anders.broman@telia.com>
*
* $Id$
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Ref ITU-T Rec. Q.1950 (12/2002)
*/
#include "packet-h248.h"
#include "packet-isup.h"
#define PNAME "H.248 Q.1950 Annex A"
#define PSNAME "H248Q1950"
#define PFNAME "h248q1950"
static int proto_q1950 = -1;
/* A.3 Bearer characteristics package */
static int hf_h248_pkg_BCP = -1;
static int hf_h248_pkg_BCP_BNCChar = -1;
static int ett_h248_pkg_BCP = -1;
static gboolean implicit = FALSE;
static const value_string h248_pkg_BCP_parameters[] = {
{ 0x0001, "BNCChar (BNC Characteristics)" },
{0, NULL}
};
static const value_string h248_pkg_BCP_props_vals[] = {
{1,"BNCChar"},
{0,NULL}
};
/* Properties */
h248_pkg_param_t h248_pkg_BCP_props[] = {
{ 0x0001, &hf_h248_pkg_BCP_BNCChar, h248_param_ber_integer, &implicit },
{ 0, NULL, NULL, NULL}
};
/* Packet defenitions */
static h248_package_t h248_pkg_BCP = {
0x001e,
&hf_h248_pkg_BCP,
&ett_h248_pkg_BCP,
h248_pkg_BCP_props_vals,
NULL,
NULL,
NULL,
h248_pkg_BCP_props, /* Properties */
NULL, /* signals */
NULL, /* events */
NULL /* statistics */
};
/* A.4 Bearer Network connection cut-through package */
/* A.5 Bearer Reuse Idle Package */
/* A.6 Generic bearer connection package
Package Name: GB
Package ID: 0x0021
*/
/* A.7 Bearer control tunnelling package */
static dissector_handle_t sdp_dissector = NULL;
static int hf_h248_pkg_bct = -1;
static int hf_h248_pkg_bct_tind = -1;
static gint ett_h248_pkg_bct = -1;
static gint ett_h248_pkg_bct_tind = -1;
static void dissect_bct_tind_bit(proto_tree* tree, tvbuff_t* tvb, packet_info* pinfo, int hfid, h248_curr_info_t* i _U_, void* d _U_) {
tvbuff_t* sdp_tvb = NULL;
gint8 class;
gboolean pc;
gint32 tag;
get_ber_identifier(tvb, 0, &class, &pc, &tag);
/* XXX: is this enough to guess it? */
if ((tag==BER_UNI_TAG_OCTETSTRING)) {
dissect_ber_octet_string(FALSE, pinfo, tree, tvb, 0, hfid, &sdp_tvb);
if (sdp_tvb) {
/* XXX: are we sure it is always sdp? */
call_dissector(sdp_dissector,sdp_tvb,pinfo,tree);
}
} else {
proto_tree_add_item(tree,hfid,tvb,0,-1,FALSE);
}
}
static h248_pkg_param_t h248_pkg_bct_tind[] = {
{ 0x0001, &hf_h248_pkg_bct_tind, dissect_bct_tind_bit, &implicit },
{ 0, NULL, NULL, NULL}
};
/* Events */
static h248_pkg_evt_t h248_pkg_bct_events[] = {
{ 0x0001, &hf_h248_pkg_bct_tind, &ett_h248_pkg_bct_tind, h248_pkg_bct_tind},
{ 0, NULL, NULL, NULL}
};
/* Packet defenitions */
static h248_package_t h248_pkg_bct = {
0x0022,
&hf_h248_pkg_bct,
&ett_h248_pkg_bct,
NULL,
NULL,
NULL,
NULL,
NULL, /* Properties */
NULL, /* signals */
h248_pkg_bct_events, /* events */
NULL /* statistics */
};
/* A.8 Basic call progress tones generator with directionality */
static int hf_h248_pkg_bcg = -1;
static int hf_h248_pkg_bcg_sig_bdt_par_btd = -1;
static int hf_h248_pkg_bcg_sig_bdt = -1;
static int hf_h248_pkg_bcg_sig_brt = -1;
static int hf_h248_pkg_bcg_sig_bbt = -1;
static int hf_h248_pkg_bcg_sig_bct = -1;
static int hf_h248_pkg_bcg_sig_bsit = -1;
static int hf_h248_pkg_bcg_sig_bwt = -1;
static int hf_h248_pkg_bcg_sig_bpt = -1;
static int hf_h248_pkg_bcg_sig_bcw = -1;
static int hf_h248_pkg_bcg_sig_bcr = -1;
static int hf_h248_pkg_bcg_sig_bpy = -1;
static int ett_h248_pkg_bcg = -1;
static int ett_h248_pkg_bcg_sig_bdt = -1;
static const value_string h248_pkg_bcg_sig_bdt_par_btd_vals[] = {
{ 0x0001, "ext (External)" },
{ 0x0002, "int (Internal)" },
{ 0x0003, "both (Both)" },
{0, NULL},
};
static h248_pkg_param_t h248_pkg_h248_pkg_bcg_sig_bdt_params[] = {
{ 0x0001, &hf_h248_pkg_bcg_sig_bdt_par_btd, h248_param_ber_integer, &implicit },
{ 0, NULL, NULL, NULL}
};
static h248_pkg_sig_t h248_pkg_bcg_signals[] = {
/* All the tones have the same parameters */
{ 0x0040, &hf_h248_pkg_bcg_sig_bdt, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
{ 0x0041, &hf_h248_pkg_bcg_sig_brt, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
{ 0x0042, &hf_h248_pkg_bcg_sig_bbt, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
{ 0x0043, &hf_h248_pkg_bcg_sig_bct, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
{ 0x0044, &hf_h248_pkg_bcg_sig_bsit, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
{ 0x0045, &hf_h248_pkg_bcg_sig_bwt, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
{ 0x0046, &hf_h248_pkg_bcg_sig_bpt, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
{ 0x0047, &hf_h248_pkg_bcg_sig_bcw, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
{ 0x0048, &hf_h248_pkg_bcg_sig_bcr, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
{ 0x0049, &hf_h248_pkg_bcg_sig_bpy, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
{ 0, NULL, NULL, NULL}
};
/* Packet defenitions */
static h248_package_t h248_pkg_bcg = {
0x0023,
&hf_h248_pkg_bcg,
&ett_h248_pkg_bcg,
NULL,
NULL,
NULL,
NULL,
NULL, /* Properties */
h248_pkg_bcg_signals, /* signals */
NULL, /* events */
NULL /* statistics */
};
/* Register dissector */
void proto_register_q1950(void) {
static hf_register_info hf[] = {
/* A.3 Bearer characteristics package */
{ &hf_h248_pkg_BCP,
{ "BCP (Bearer characteristics package)", "h248.pkg.BCP",
FT_BYTES, BASE_HEX, NULL, 0, "", HFILL }
},
{ &hf_h248_pkg_BCP_BNCChar,
{ "BNCChar (BNC Characteristics)", "h248.pkg.bcp.bncchar",
FT_UINT32, BASE_HEX, VALS(bearer_network_connection_characteristics_vals), 0, "BNC Characteristics", HFILL }
},
/* A.8 Basic call progress tones generator with directionality */
{ &hf_h248_pkg_bcg,
{ "bcg (Basic call progress tones generator with directionality)", "h248.pkg.bcg",
FT_BYTES, BASE_HEX, NULL, 0, "", HFILL }
},
{ &hf_h248_pkg_bcg_sig_bdt_par_btd,
{ "btd (Tone Direction)", "h248.pkg.bcp.btd",
FT_UINT32, BASE_HEX, VALS(h248_pkg_bcg_sig_bdt_par_btd_vals), 0, "btd (Tone Direction)", HFILL }
},
{ &hf_h248_pkg_bcg_sig_bdt,
{ "bdt (Dial Tone)", "h248.pkg.bcg.bdt",
FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }
},
{ &hf_h248_pkg_bcg_sig_brt,
{ "brt (Ringing tone)", "h248.pkg.bcg.brt",
FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }
},
{ &hf_h248_pkg_bcg_sig_bbt,
{ "bbt (Busy tone)", "h248.pkg.bcg.bbt",
FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }
},
{ &hf_h248_pkg_bcg_sig_bct,
{ "bct (Congestion tone)", "h248.pkg.bcg.bct",
FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }
},
{ &hf_h248_pkg_bcg_sig_bsit,
{ "bsit (Special information tone)", "h248.pkg.bcg.bsit",
FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }
},
{ &hf_h248_pkg_bcg_sig_bwt,
{ "bwt (Warning tone)", "h248.pkg.bcg.bwt",
FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }
},
{ &hf_h248_pkg_bcg_sig_bpt,
{ "bpt (Payphone recognition tone)", "h248.pkg.bcg.bpt",
FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }
},
{ &hf_h248_pkg_bcg_sig_bcw,
{ "bcw (Call waiting tone)", "h248.pkg.bcg.bcw",
FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }
},
{ &hf_h248_pkg_bcg_sig_bpy,
{ "bpy (Pay tone)", "h248.pkg.bcg.bpy",
FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }
},
{ &ett_h248_pkg_bct,
{ "BCT (Bearer Control Tunneling)", "h248.pkg.bct",
FT_BYTES, BASE_HEX, NULL, 0, "", HFILL }
},
{ &hf_h248_pkg_bct_tind,
{ "tind (Tunnel INDication)", "h248.pkg.bct.tind",
FT_BYTES, BASE_HEX, NULL, 0, "", HFILL }
},
};
static gint *ett[] = {
&ett_h248_pkg_BCP,
&ett_h248_pkg_bct,
&ett_h248_pkg_bct_tind
};
proto_q1950 = proto_register_protocol(PNAME, PSNAME, PFNAME);
proto_register_field_array(proto_q1950, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
/* Register the packages */
h248_register_package(&h248_pkg_BCP);
h248_register_package(&h248_pkg_bcg);
h248_register_package(&h248_pkg_bct);
}
void proto_reg_handoff_q1950(void) {
sdp_dissector = find_dissector("sdp");
}
|
