forked from osmocom/wireshark
294 lines
8.7 KiB
C
294 lines
8.7 KiB
C
/*
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* packet-h248_q1950.c
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* Q.1950 annex A
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*
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* (c) 2006, Anders Broman <anders.broman@telia.com>
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* Ref ITU-T Rec. Q.1950 (12/2002)
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*/
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#include "packet-h248.h"
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#include "packet-isup.h"
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#define PNAME "H.248 Q.1950 Annex A"
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#define PSNAME "H248Q1950"
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#define PFNAME "h248q1950"
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static int proto_q1950 = -1;
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/* A.3 Bearer characteristics package */
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static int hf_h248_pkg_BCP = -1;
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static int hf_h248_pkg_BCP_BNCChar = -1;
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static int ett_h248_pkg_BCP = -1;
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static gboolean implicit = FALSE;
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static const value_string h248_pkg_BCP_parameters[] = {
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{ 0x0001, "BNCChar (BNC Characteristics)" },
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{0, NULL}
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};
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static const value_string h248_pkg_BCP_props_vals[] = {
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{1,"BNCChar"},
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{0,NULL}
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};
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/* Properties */
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h248_pkg_param_t h248_pkg_BCP_props[] = {
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{ 0x0001, &hf_h248_pkg_BCP_BNCChar, h248_param_ber_integer, &implicit },
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{ 0, NULL, NULL, NULL}
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};
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/* Packet defenitions */
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static h248_package_t h248_pkg_BCP = {
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0x001e,
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&hf_h248_pkg_BCP,
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&ett_h248_pkg_BCP,
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h248_pkg_BCP_props_vals,
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NULL,
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NULL,
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NULL,
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h248_pkg_BCP_props, /* Properties */
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NULL, /* signals */
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NULL, /* events */
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NULL /* statistics */
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};
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/* A.4 Bearer Network connection cut-through package */
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/* A.5 Bearer Reuse Idle Package */
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/* A.6 Generic bearer connection package
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Package Name: GB
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Package ID: 0x0021
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*/
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/* A.7 Bearer control tunnelling package */
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static dissector_handle_t sdp_dissector = NULL;
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static int hf_h248_pkg_bct = -1;
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static int hf_h248_pkg_bct_tind = -1;
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static gint ett_h248_pkg_bct = -1;
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static gint ett_h248_pkg_bct_tind = -1;
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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_) {
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tvbuff_t* sdp_tvb = NULL;
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gint8 class;
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gboolean pc;
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gint32 tag;
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get_ber_identifier(tvb, 0, &class, &pc, &tag);
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/* XXX: is this enough to guess it? */
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if ((tag==BER_UNI_TAG_OCTETSTRING)) {
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dissect_ber_octet_string(FALSE, pinfo, tree, tvb, 0, hfid, &sdp_tvb);
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if (sdp_tvb) {
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/* XXX: are we sure it is always sdp? */
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call_dissector(sdp_dissector,sdp_tvb,pinfo,tree);
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}
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} else {
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proto_tree_add_item(tree,hfid,tvb,0,-1,FALSE);
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}
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}
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static h248_pkg_param_t h248_pkg_bct_tind[] = {
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{ 0x0001, &hf_h248_pkg_bct_tind, dissect_bct_tind_bit, &implicit },
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{ 0, NULL, NULL, NULL}
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};
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/* Events */
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static h248_pkg_evt_t h248_pkg_bct_events[] = {
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{ 0x0001, &hf_h248_pkg_bct_tind, &ett_h248_pkg_bct_tind, h248_pkg_bct_tind},
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{ 0, NULL, NULL, NULL}
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};
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/* Packet defenitions */
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static h248_package_t h248_pkg_bct = {
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0x0022,
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&hf_h248_pkg_bct,
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&ett_h248_pkg_bct,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL, /* Properties */
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NULL, /* signals */
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h248_pkg_bct_events, /* events */
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NULL /* statistics */
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};
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/* A.8 Basic call progress tones generator with directionality */
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static int hf_h248_pkg_bcg = -1;
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static int hf_h248_pkg_bcg_sig_bdt_par_btd = -1;
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static int hf_h248_pkg_bcg_sig_bdt = -1;
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static int hf_h248_pkg_bcg_sig_brt = -1;
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static int hf_h248_pkg_bcg_sig_bbt = -1;
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static int hf_h248_pkg_bcg_sig_bct = -1;
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static int hf_h248_pkg_bcg_sig_bsit = -1;
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static int hf_h248_pkg_bcg_sig_bwt = -1;
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static int hf_h248_pkg_bcg_sig_bpt = -1;
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static int hf_h248_pkg_bcg_sig_bcw = -1;
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static int hf_h248_pkg_bcg_sig_bcr = -1;
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static int hf_h248_pkg_bcg_sig_bpy = -1;
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static int ett_h248_pkg_bcg = -1;
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static int ett_h248_pkg_bcg_sig_bdt = -1;
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static const value_string h248_pkg_bcg_sig_bdt_par_btd_vals[] = {
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{ 0x0001, "ext (External)" },
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{ 0x0002, "int (Internal)" },
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{ 0x0003, "both (Both)" },
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{0, NULL},
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};
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static h248_pkg_param_t h248_pkg_h248_pkg_bcg_sig_bdt_params[] = {
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{ 0x0001, &hf_h248_pkg_bcg_sig_bdt_par_btd, h248_param_ber_integer, &implicit },
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{ 0, NULL, NULL, NULL}
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};
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static h248_pkg_sig_t h248_pkg_bcg_signals[] = {
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/* All the tones have the same parameters */
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{ 0x0040, &hf_h248_pkg_bcg_sig_bdt, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
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{ 0x0041, &hf_h248_pkg_bcg_sig_brt, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
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{ 0x0042, &hf_h248_pkg_bcg_sig_bbt, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
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{ 0x0043, &hf_h248_pkg_bcg_sig_bct, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
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{ 0x0044, &hf_h248_pkg_bcg_sig_bsit, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
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{ 0x0045, &hf_h248_pkg_bcg_sig_bwt, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
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{ 0x0046, &hf_h248_pkg_bcg_sig_bpt, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
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{ 0x0047, &hf_h248_pkg_bcg_sig_bcw, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
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{ 0x0048, &hf_h248_pkg_bcg_sig_bcr, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
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{ 0x0049, &hf_h248_pkg_bcg_sig_bpy, &ett_h248_pkg_bcg_sig_bdt, h248_pkg_h248_pkg_bcg_sig_bdt_params },
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{ 0, NULL, NULL, NULL}
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};
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/* Packet defenitions */
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static h248_package_t h248_pkg_bcg = {
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0x0023,
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&hf_h248_pkg_bcg,
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&ett_h248_pkg_bcg,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL, /* Properties */
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h248_pkg_bcg_signals, /* signals */
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NULL, /* events */
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NULL /* statistics */
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};
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/* Register dissector */
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void proto_register_q1950(void) {
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static hf_register_info hf[] = {
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/* A.3 Bearer characteristics package */
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{ &hf_h248_pkg_BCP,
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{ "BCP (Bearer characteristics package)", "h248.pkg.BCP",
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FT_BYTES, BASE_HEX, NULL, 0, "", HFILL }
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},
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{ &hf_h248_pkg_BCP_BNCChar,
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{ "BNCChar (BNC Characteristics)", "h248.pkg.bcp.bncchar",
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FT_UINT32, BASE_HEX, VALS(bearer_network_connection_characteristics_vals), 0, "BNC Characteristics", HFILL }
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},
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/* A.8 Basic call progress tones generator with directionality */
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{ &hf_h248_pkg_bcg,
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{ "bcg (Basic call progress tones generator with directionality)", "h248.pkg.bcg",
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FT_BYTES, BASE_HEX, NULL, 0, "", HFILL }
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},
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{ &hf_h248_pkg_bcg_sig_bdt_par_btd,
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{ "btd (Tone Direction)", "h248.pkg.bcp.btd",
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FT_UINT32, BASE_HEX, VALS(h248_pkg_bcg_sig_bdt_par_btd_vals), 0, "btd (Tone Direction)", HFILL }
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},
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{ &hf_h248_pkg_bcg_sig_bdt,
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{ "bdt (Dial Tone)", "h248.pkg.bcg.bdt",
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FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }
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},
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{ &hf_h248_pkg_bcg_sig_brt,
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{ "brt (Ringing tone)", "h248.pkg.bcg.brt",
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FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }
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},
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{ &hf_h248_pkg_bcg_sig_bbt,
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{ "bbt (Busy tone)", "h248.pkg.bcg.bbt",
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FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }
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},
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{ &hf_h248_pkg_bcg_sig_bct,
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{ "bct (Congestion tone)", "h248.pkg.bcg.bct",
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FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }
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},
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{ &hf_h248_pkg_bcg_sig_bsit,
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{ "bsit (Special information tone)", "h248.pkg.bcg.bsit",
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FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }
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},
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{ &hf_h248_pkg_bcg_sig_bwt,
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{ "bwt (Warning tone)", "h248.pkg.bcg.bwt",
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FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }
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},
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{ &hf_h248_pkg_bcg_sig_bpt,
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{ "bpt (Payphone recognition tone)", "h248.pkg.bcg.bpt",
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FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }
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},
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{ &hf_h248_pkg_bcg_sig_bcw,
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{ "bcw (Call waiting tone)", "h248.pkg.bcg.bcw",
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FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }
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},
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{ &hf_h248_pkg_bcg_sig_bpy,
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{ "bpy (Pay tone)", "h248.pkg.bcg.bpy",
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FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }
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},
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{ &ett_h248_pkg_bct,
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{ "BCT (Bearer Control Tunneling)", "h248.pkg.bct",
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FT_BYTES, BASE_HEX, NULL, 0, "", HFILL }
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},
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{ &hf_h248_pkg_bct_tind,
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{ "tind (Tunnel INDication)", "h248.pkg.bct.tind",
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FT_BYTES, BASE_HEX, NULL, 0, "", HFILL }
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},
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};
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static gint *ett[] = {
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&ett_h248_pkg_BCP,
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&ett_h248_pkg_bct,
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&ett_h248_pkg_bct_tind
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};
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proto_q1950 = proto_register_protocol(PNAME, PSNAME, PFNAME);
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proto_register_field_array(proto_q1950, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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/* Register the packages */
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h248_register_package(&h248_pkg_BCP);
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h248_register_package(&h248_pkg_bcg);
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h248_register_package(&h248_pkg_bct);
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}
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void proto_reg_handoff_q1950(void) {
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sdp_dissector = find_dissector("sdp");
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}
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