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/* packet-h248.c
* Routines for H.248/MEGACO packet dissection
* Ronnie Sahlberg 2004
*
* $Id$
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
* 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.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <glib.h>
#include <epan/packet.h>
#include <epan/conversation.h>
#include <stdio.h>
#include <string.h>
#include "packet-ber.h"
#include "packet-h248.h"
#define PNAME "H.248 MEGACO"
#define PSNAME "H248"
#define PFNAME "h248"
/*XXX this define should be moved to packet-m3ua.h ? */
#define GATEWAY_CONTROL_PROTOCOL_USER_ID 14
/* Initialize the protocol and registered fields */
static int proto_h248 = -1;
static int hf_h248_mtpaddress_ni = -1;
static int hf_h248_mtpaddress_pc = -1;
static int hf_h248_package_name = -1;
#include "packet-h248-hf.c"
/* Initialize the subtree pointers */
static gint ett_h248 = -1;
static gint ett_mtpaddress = -1;
static gint ett_packagename = -1;
#include "packet-h248-ett.c"
static const value_string package_name_vals[] = {
{ 0x0000, "Media stream properties H.248.1 Annex C" },
{ 0x0001, "g H.248.1 Annex E" },
{ 0x0002, "root H.248.1 Annex E" },
{ 0x0003, "tonegen H.248.1 Annex E" },
{ 0x0004, "tonedet H.248.1 Annex E" },
{ 0x0005, "dg H.248.1 Annex E" },
{ 0x0006, "dd H.248.1 Annex E" },
{ 0x0007, "cg H.248.1 Annex E" },
{ 0x0008, "cd H.248.1 Annex E" },
{ 0x0009, "al H.248.1 Annex E" },
{ 0x000a, "ct H.248.1 Annex E" },
{ 0x000b, "nt H.248.1 Annex E" },
{ 0x000c, "rtp H.248.1 Annex E" },
{ 0x000d, "tdmc H.248.1 Annex E" },
{ 0x000e, "ftmd H.248.1 Annex E" },
{ 0x000f, "txc H.248.2" }, /* H.248.2 */
{ 0x0010, "txp H.248.2" },
{ 0x0011, "ctyp H.248.2" },
{ 0x0012, "fax H.248.2" },
{ 0x0013, "ipfax H.248.2" },
{ 0x0014, "dis H.248.3" }, /* H.248.3 */
{ 0x0015, "key H.248.3" },
{ 0x0016, "kp H.248.3" },
{ 0x0017, "labelkey H.248.3" },
{ 0x0018, "kf H.248.3" },
{ 0x0019, "ind H.248.3" },
{ 0x001a, "ks H.248.3" },
{ 0x001b, "anci H.248.3" },
{ 0x001c, "dtd H.248.6" }, /* H.248.6 */
{ 0x001d, "an H.248.7" }, /* H.248.7 */
{ 0x001e, "Bearer Characteristics Q.1950 Annex A" }, /* Q.1950 Annex A */
{ 0x001f, "Bearer Network Connection Cut Q.1950 Annex A" },
{ 0x0020, "Reuse Idle Q.1950 Annex A" },
{ 0x0021, "Generic Bearer Connection Q.1950 Annex A" },
{ 0x0022, "Bearer Control Tunnelling Q.1950 Annex A" },
{ 0x0023, "Basic Call Progress Tones Q.1950 Annex A" },
{ 0x0024, "Expanded Call Progress Tones Q.1950 Annex A" },
{ 0x0025, "Basic Services Tones Q.1950 Annex A" },
{ 0x0026, "Expanded Services Tones Q.1950 Annex A" },
{ 0x0027, "Intrusion Tones Q.1950 Annex A" },
{ 0x0028, "Business Tones Q.1950 Annex A" },
{ 0x0029, "Media Gateway Resource Congestion Handling H.248.10" }, /* H.248.10 */
{ 0x002a, "H245 package H248.12" }, /* H.248.12 */
{ 0x002b, "H323 bearer control package H.248.12" }, /* H.248.12 */
{ 0x002c, "H324 package H.248.12" }, /* H.248.12 */
{ 0x002d, "H245 command package H.248.12" }, /* H.248.12 */
{ 0x002e, "H245 indication package H.248.12" }, /* H.248.12 */
{ 0x002f, "3G User Plane" }, /* 3GPP TS 29.232 v4.1.0 */
{ 0x0030, "3G Circuit Switched Data" },
{ 0x0031, "3G TFO Control" },
{ 0x0032, "3G Expanded Call Progress Tones" },
{ 0x0033, "Advanced Audio Server (AAS) Base)" }, /* H.248.9 */
{ 0x0034, "AAS Digit Collection" }, /* H.248.9 */
{ 0x0035, "AAS Recording" }, /* H.248.9 */
{ 0x0036, "AAS Segment Management" }, /* H.248.9 */
{ 0x0037, "Quality Alert Ceasing" }, /* H.248.13 */
{ 0x0038, "Conferencing Tones Generation" }, /* H.248.27 */
{ 0x0039, "Diagnostic Tones Generation" }, /* H.248.27 */
{ 0x003a, "Carrier Tones Generation Package H.248.23" }, /* H.248.27 */
{ 0x003b, "Enhanced Alerting Package H.248.23" }, /* H.248.23 */
{ 0x003c, "Analog Display Signalling Package H.248.23" }, /* H.248.23 */
{ 0x003d, "Multi-Frequency Tone Generation Package H.248.24" }, /* H.248.24 */
{ 0x003e, "H.248.23Multi-Frequency Tone Detection Package H.248.24" }, /* H.248.24 */
{ 0x003f, "Basic CAS Package H.248.25" }, /* H.248.25 */
{ 0x0040, "Robbed Bit Signalling Package H.248.25" }, /* H.248.25 */
{ 0x0041, "Operator Services and Emgergency Services Package H.248.25" },
{ 0x0042, "Operator Services Extension Package H.248.25" },
{ 0x0043, "Extended Analog Line Supervision Package H.248.26" },
{ 0x0044, "Automatic Metering Package H.248.26" },
{ 0x0045, "Inactivity Timer Package H.248.14" },
{ 0x0046, "3G Modification of Link Characteristics Bearer Capability" }, /* 3GPP TS 29.232 v4.4.0 */
{ 0x0047, "Base Announcement Syntax H.248.9" },
{ 0x0048, "Voice Variable Syntax H.248.9" },
{ 0x0049, "Announcement Set Syntax H.248.9" },
{ 0x004a, "Phrase Variable Syntax H.248.9" },
{ 0x004b, "Basic NAS package" },
{ 0x004c, "NAS incoming package" },
{ 0x004d, "NAS outgoing package" },
{ 0x004e, "NAS control package" },
{ 0x004f, "NAS root package" },
{ 0x0050, "Profile Handling Package H.248.18" },
{ 0x0051, "Media Gateway Overload Control Package H.248.11" },
{ 0x0052, "Extended DTMF Detection Package H.248.16" },
{ 0x0053, "Quiet Termination Line Test" },
{ 0x0054, "Loopback Line Test Response" }, /* H.248.17 */
{ 0x0055, "ITU 404Hz Line Test" }, /* H.248.17 */
{ 0x0056, "ITU 816Hz Line Test" }, /* H.248.17 */
{ 0x0057, "ITU 1020Hz Line Test" }, /* H.248.17 */
{ 0x0058, "ITU 2100Hz Disable Tone Line Test" }, /* H.248.17 */
{ 0x0059, "ITU 2100Hz Disable Echo Canceller Tone Line Test" }, /* H.248.17 */
{ 0x005a, "ITU 2804Hz Tone Line Test" }, /* H.248.17 */
{ 0x005b, "ITU Noise Test Tone Line Test" }, /* H.248.17 */
{ 0x005c, "ITU Digital Pseudo Random Test Line Test" }, /* H.248.17 */
{ 0x005d, "ITU ATME No.2 Test Line Response" }, /* H.248.17 */
{ 0x005e, "ANSI 1004Hz Test Tone Line Test" }, /* H.248.17 */
{ 0x005f, "ANSI Test Responder Line Test" }, /* H.248.17 */
{ 0x0060, "ANSI 2225Hz Test Progress Tone Line Test" }, /* H.248.17 */
{ 0x0061, "ANSI Digital Test Signal Line Test" }, /* H.248.17 */
{ 0x0062, "ANSI Inverting Loopback Line Test Repsonse" }, /* H.248.17 */
{ 0x0063, "Extended H.324 Packages H.248.12 Annex A" },
{ 0x0064, "Extended H.245 Command Package H.248.12 Annex A" },
{ 0x0065, "Extended H.245 Indication Package H.248.12 Annex A" },
{ 0x0066, "Enhanced DTMF Detection Package H.248.16" },
{ 0x0067, "Connection Group Identity Package Q.1950 Annex E" },
{ 0x0068, "CTM Text Transport 3GPP TS 29.232 v5.2.0" },
{ 0x0069, "SPNE Control Package Q.115.0" },
{ 0x006a, "Semi-permanent Connection Package H.248.21" },
{ 0x006b, "Shared Risk Group Package H.248.22" },
{ 0x006c, "isuptn Annex B of ITU-T Rec. J.171" },
{ 0x006d, "Basic CAS Addressing Package H.248.25" },
{ 0x006e, "Floor Control Package H.248.19" },
{ 0x006f, "Indication of Being Viewed Package H.248.19" },
{ 0x0070, "Volume Control Package H.248.19" },
{ 0x0071, "UNASSIGNED" },
{ 0x0072, "Volume Detection Package H.248.19" },
{ 0x0073, "Volume Level Mixing Package H.248.19" },
{ 0x0074, "Mixing Volume Level Control Package H.248.19" },
{ 0x0075, "Voice Activated Video Switch Package H.248.19" },
{ 0x0076, "Lecture Video Mode Package H.248.19" },
{ 0x0077, "Contributing Video Source Package H.248.19" },
{ 0x0078, "Video Window Package H.248.19" },
{ 0x0079, "Tiled Window Package H.248.19" },
{ 0x007a, "Adaptive Jitter Buffer Package H.248.31" },
{ 0x007b, "International CAS Package H.248.28" },
{ 0x007c, "CAS Blocking Package H.248.28" },
{ 0x007d, "International CAS Compelled Package H.248.29" },
{ 0x007e, "International CAS Compelled with Overlap Package H.248.29" },
{ 0x007f, "International CAS Compelled with End-to-end Package H.248.29" },
{ 0x0080, "RTCP XR Package H.248.30" },
{ 0x0081, "RTCP XR Burst Metrics Package H.248.30" },
{ 0x0082, "threegcsden 3G Circuit Switched Data" }, /* 3GPP TS 29.232 v5.6.0 */
{ 0x0083, "threegiptra 3G Circuit Switched Data" }, /* 3GPP TS 29.232 v5.6.0 */
{ 0x0084, "threegflex 3G Circuit Switched Data" }, /* 3GPP TS 29.232 v5.6.0 */
{ 0x0085, "H.248 PCMSB" },
{ 0x008a, "TIPHON Extended H.248/MEGACO Package" }, /* ETSI specification TS 101 3 */
{ 0x008b, "Differentiated Services Package" }, /* Annex A of ETSI TS 102 333 */
{ 0x008c, "Gate Management Package" }, /* Annex B of ETSI TS 102 333 */
{ 0x008d, "Traffic Management Package" }, /* Annex C of ETSI TS 102 333 */
{ 0x008e, "Gate Recovery Information Package" }, /* Annex D of ETSI TS 102 333 */
{ 0x008f, "NAT Traversal Package" }, /* Annex E of ETSI TS 102 333 */
{ 0x0090, "MPLS Package" }, /* Annex F of ETSI TS 102 333 */
{ 0x0091, "VLAN Package" }, /* Annex G of ETSI TS 102 333 */
{ 0x8000, "Ericsson IU" },
{ 0x8001, "Ericsson UMTS and GSM Circuit" },
{ 0x8002, "Ericsson Tone Generator Package" },
{ 0x8003, "Ericsson Line Test Package" },
{ 0x8004, "Nokia Advanced TFO Package" },
{ 0x8005, "Nokia IWF Package" },
{ 0x8006, "Nokia Root Package" },
{ 0x8007, "Nokia Trace Package" },
{ 0x8008, "Ericsson V5.2 Layer" },
{ 0x8009, "Ericsson Detailed Termination Information Package" },
{ 0x800a, "Nokia Bearer Characteristics Package" },
{0, NULL}
};
static int
dissect_h248_PkgdName(gboolean implicit_tag, tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, int hf_index) {
tvbuff_t *new_tvb;
proto_tree *package_tree=NULL;
guint32 name_major, name_minor;
int old_offset;
old_offset=offset;
offset = dissect_ber_octet_string(implicit_tag, pinfo, tree, tvb, offset, hf_index, &new_tvb);
/* this field is always 4 bytes so just read it into two integers */
name_major=tvb_get_ntohs(new_tvb, 0);
name_minor=tvb_get_ntohs(new_tvb, 2);
/* do the prettification */
proto_item_append_text(ber_last_created_item, " %s (%04x)", val_to_str(name_major, package_name_vals, "Unknown Package"), name_major);
if(tree){
package_tree = proto_item_add_subtree(ber_last_created_item, ett_packagename);
}
proto_tree_add_uint(package_tree, hf_h248_package_name, tvb, offset-4, 2, name_major);
return offset;
}
static int
dissect_h248_PropertyID(gboolean implicit_tag, tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, int hf_index) {
offset = dissect_ber_octet_string(implicit_tag, pinfo, tree, tvb, offset, hf_index, NULL);
return offset;
}
static int
dissect_h248_MtpAddress(gboolean implicit_tag, tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, int hf_index) {
tvbuff_t *new_tvb;
proto_tree *mtp_tree=NULL;
guint32 val;
int i, len, old_offset;
old_offset=offset;
offset = dissect_ber_octet_string(implicit_tag, pinfo, tree, tvb, offset, hf_index, &new_tvb);
/* this field is either 2 or 4 bytes so just read it into an integer */
val=0;
len=tvb_length(new_tvb);
for(i=0;i<len;i++){
val= (val<<8)|tvb_get_guint8(new_tvb, i);
}
/* do the prettification */
proto_item_append_text(ber_last_created_item, " NI = %d, PC = %d ( %d-%d )", val&0x03,val>>2,val&0x03,val>>2);
if(tree){
mtp_tree = proto_item_add_subtree(ber_last_created_item, ett_mtpaddress);
}
proto_tree_add_uint(mtp_tree, hf_h248_mtpaddress_ni, tvb, old_offset, offset-old_offset, val&0x03);
proto_tree_add_uint(mtp_tree, hf_h248_mtpaddress_pc, tvb, old_offset, offset-old_offset, val>>2);
return offset;
}
#include "packet-h248-fn.c"
static void
dissect_h248(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_item *h248_item;
proto_tree *h248_tree = NULL;
/* Make entry in the Protocol column on summary display */
if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_set_str(pinfo->cinfo, COL_PROTOCOL, "H.248");
if (tree) {
h248_item = proto_tree_add_item(tree, proto_h248, tvb, 0, -1, FALSE);
h248_tree = proto_item_add_subtree(h248_item, ett_h248);
}
dissect_h248_MegacoMessage(FALSE, tvb, 0, pinfo, h248_tree, -1);
}
/*--- proto_register_h248 ----------------------------------------------*/
void proto_register_h248(void) {
/* List of fields */
static hf_register_info hf[] = {
{ &hf_h248_mtpaddress_ni, {
"NI", "h248.mtpaddress.ni", FT_UINT32, BASE_DEC,
NULL, 0, "NI", HFILL }},
{ &hf_h248_mtpaddress_pc, {
"PC", "h248.mtpaddress.pc", FT_UINT32, BASE_DEC,
NULL, 0, "PC", HFILL }},
{ &hf_h248_package_name, {
"Package", "h248.package_name", FT_UINT32, BASE_HEX,
VALS(package_name_vals), 0, "Package", HFILL }},
#include "packet-h248-hfarr.c"
};
/* List of subtrees */
static gint *ett[] = {
&ett_h248,
&ett_mtpaddress,
&ett_packagename,
#include "packet-h248-ettarr.c"
};
/* Register protocol */
proto_h248 = proto_register_protocol(PNAME, PSNAME, PFNAME);
register_dissector("h248", dissect_h248, proto_h248);
/* Register fields and subtrees */
proto_register_field_array(proto_h248, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
/*--- proto_reg_handoff_h248 -------------------------------------------*/
void proto_reg_handoff_h248(void) {
dissector_handle_t h248_handle;
h248_handle = find_dissector("h248");
dissector_add("m3ua.protocol_data_si", GATEWAY_CONTROL_PROTOCOL_USER_ID, h248_handle);
}
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