2843 lines
100 KiB
C
2843 lines
100 KiB
C
/* packet-t38.c
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* Routines for T.38 packet dissection
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* 2003 Hans Viens
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* 2004 Alejandro Vaquero, add support Conversations for SDP
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* 2006 Alejandro Vaquero, add T30 reassemble and dissection
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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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/* Depending on what ASN.1 specification is used you may have to change
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* the preference setting regarding Pre-Corrigendum ASN.1 specification:
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* http://www.itu.int/ITU-T/asn1/database/itu-t/t/t38/1998/T38.html (Pre-Corrigendum=TRUE)
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* http://www.itu.int/ITU-T/asn1/database/itu-t/t/t38/2003/T38(1998).html (Pre-Corrigendum=TRUE)
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*
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* http://www.itu.int/ITU-T/asn1/database/itu-t/t/t38/2003/T38(2002).html (Pre-Corrigendum=FALSE)
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* http://www.itu.int/ITU-T/asn1/database/itu-t/t/t38/2002/t38.html (Pre-Corrigendum=FALSE)
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* http://www.itu.int/ITU-T/asn1/database/itu-t/t/t38/2002-Amd1/T38.html (Pre-Corrigendum=FALSE)
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*/
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/* TO DO:
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* - TCP desegmentation is currently not supported for T.38 IFP directly over TCP.
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* - H.245 dissectors should be updated to start conversations for T.38 similar to RTP.
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* - Sometimes the last octet is not high-lighted when selecting something in the tree. Bug in PER dissector?
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* - Add support for RTP payload audio/t38 (draft-jones-avt-audio-t38-03.txt), i.e. T38 in RTP packets.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/reassemble.h>
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#include <epan/conversation.h>
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#include <epan/tap.h>
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#include <epan/expert.h>
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#include <stdio.h>
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#include <string.h>
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#include "packet-t38.h"
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#include <epan/prefs.h>
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#include <epan/ipproto.h>
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#include "packet-per.h"
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#include "packet-tpkt.h"
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#include <epan/emem.h>
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#define PORT_T38 6004
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static guint global_t38_tcp_port = PORT_T38;
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static guint global_t38_udp_port = PORT_T38;
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static int t38_tap = -1;
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/*
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* Variables to allow for proper deletion of dissector registration when
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* the user changes port from the gui.
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*/
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static guint tcp_port = 0;
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static guint udp_port = 0;
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/* dissect using the Pre Corrigendum T.38 ASN.1 specification (1998) */
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static gboolean use_pre_corrigendum_asn1_specification = TRUE;
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/* dissect packets that looks like RTP version 2 packets as RTP */
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/* instead of as T.38. This may result in that some T.38 UPTL */
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/* packets with sequence number values higher than 32767 may be */
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/* shown as RTP packets. */
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static gboolean dissect_possible_rtpv2_packets_as_rtp = FALSE;
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/* Reassembly of T.38 PDUs over TPKT over TCP */
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static gboolean t38_tpkt_reassembly = TRUE;
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/* Preference setting whether TPKT header is used when sending T.38 over TCP.
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* The default setting is Maybe where the dissector will look on the first
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* bytes to try to determine whether TPKT header is used or not. This may not
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* work so well in some cases. You may want to change the setting to Always or
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* Newer.
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*/
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#define T38_TPKT_NEVER 0 /* Assume that there is never a TPKT header */
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#define T38_TPKT_ALWAYS 1 /* Assume that there is always a TPKT header */
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#define T38_TPKT_MAYBE 2 /* Assume TPKT if first octets are 03-00-xx-xx */
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static gint t38_tpkt_usage = T38_TPKT_MAYBE;
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static const enum_val_t t38_tpkt_options[] = {
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{"never", "Never", T38_TPKT_NEVER},
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{"always", "Always", T38_TPKT_ALWAYS},
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{"maybe", "Maybe", T38_TPKT_MAYBE},
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{NULL, NULL, -1}
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};
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/* T30 */
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static int proto_t30 = -1;
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static int hf_t30_Address = -1;
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static int hf_t30_Control = -1;
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static int hf_t30_Facsimile_Control = -1;
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static int hf_t30_fif_sm = -1;
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static int hf_t30_fif_rtif = -1;
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static int hf_t30_fif_3gmn = -1;
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static int hf_t30_fif_v8c = -1;
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static int hf_t30_fif_op = -1;
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static int hf_t30_fif_rtfc = -1;
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static int hf_t30_fif_rfo = -1;
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static int hf_t30_fif_dsr = -1;
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static int hf_t30_fif_dsr_dcs = -1;
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static int hf_t30_fif_res = -1;
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static int hf_t30_fif_tdcc = -1;
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static int hf_t30_fif_rwc = -1;
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static int hf_t30_fif_rw_dcs = -1;
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static int hf_t30_fif_rlc = -1;
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static int hf_t30_fif_rl_dcs = -1;
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static int hf_t30_fif_msltcr = -1;
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static int hf_t30_fif_mslt_dcs = -1;
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static int hf_t30_fif_ext = -1;
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static int hf_t30_fif_cm = -1;
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static int hf_t30_fif_ecm = -1;
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static int hf_t30_fif_fs_dcs = -1;
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static int hf_t30_fif_t6 = -1;
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static int hf_t30_fif_fvc = -1;
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static int hf_t30_fif_mspc = -1;
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static int hf_t30_fif_ps = -1;
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static int hf_t30_fif_t43 = -1;
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static int hf_t30_fif_pi = -1;
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static int hf_t30_fif_vc32k = -1;
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static int hf_t30_fif_r8x15 = -1;
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static int hf_t30_fif_300x300 = -1;
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static int hf_t30_fif_r16x15 = -1;
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static int hf_t30_fif_ibrp = -1;
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static int hf_t30_fif_mbrp = -1;
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static int hf_t30_fif_msltchr = -1;
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static int hf_t30_fif_rts = -1;
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static int hf_t30_fif_sp = -1;
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static int hf_t30_fif_sc = -1;
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static int hf_t30_fif_passw = -1;
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static int hf_t30_fif_sit = -1;
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static int hf_t30_fif_rttd = -1;
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static int hf_t30_fif_bft = -1;
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static int hf_t30_fif_dtm = -1;
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static int hf_t30_fif_edi = -1;
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static int hf_t30_fif_btm = -1;
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static int hf_t30_fif_rttcmmd = -1;
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static int hf_t30_fif_chrm = -1;
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static int hf_t30_fif_mm = -1;
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static int hf_t30_fif_pm26 = -1;
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static int hf_t30_fif_dnc = -1;
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static int hf_t30_fif_do = -1;
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static int hf_t30_fif_jpeg = -1;
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static int hf_t30_fif_fcm = -1;
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static int hf_t30_fif_pht = -1;
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static int hf_t30_fif_12c = -1;
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static int hf_t30_fif_ns = -1;
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static int hf_t30_fif_ci = -1;
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static int hf_t30_fif_cgr = -1;
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static int hf_t30_fif_nalet = -1;
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static int hf_t30_fif_naleg = -1;
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static int hf_t30_fif_spscb = -1;
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static int hf_t30_fif_spsco = -1;
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static int hf_t30_fif_hkm = -1;
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static int hf_t30_fif_rsa = -1;
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static int hf_t30_fif_oc = -1;
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static int hf_t30_fif_hfx40 = -1;
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static int hf_t30_fif_acn2c = -1;
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static int hf_t30_fif_acn3c = -1;
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static int hf_t30_fif_hfx40i = -1;
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static int hf_t30_fif_ahsn2 = -1;
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static int hf_t30_fif_ahsn3 = -1;
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static int hf_t30_fif_t441 = -1;
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static int hf_t30_fif_t442 = -1;
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static int hf_t30_fif_t443 = -1;
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static int hf_t30_fif_plmss = -1;
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static int hf_t30_fif_cg300 = -1;
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static int hf_t30_fif_100x100cg = -1;
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static int hf_t30_fif_spcbft = -1;
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static int hf_t30_fif_ebft = -1;
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static int hf_t30_fif_isp = -1;
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static int hf_t30_fif_ira = -1;
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static int hf_t30_fif_600x600 = -1;
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static int hf_t30_fif_1200x1200 = -1;
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static int hf_t30_fif_300x600 = -1;
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static int hf_t30_fif_400x800 = -1;
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static int hf_t30_fif_600x1200 = -1;
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static int hf_t30_fif_cg600x600 = -1;
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static int hf_t30_fif_cg1200x1200 = -1;
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static int hf_t30_fif_dspcam = -1;
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static int hf_t30_fif_dspccm = -1;
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static int hf_t30_fif_bwmrcp = -1;
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static int hf_t30_fif_t45 = -1;
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static int hf_t30_fif_sdmc = -1;
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static int hf_t30_fif_number = -1;
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static int hf_t30_fif_country_code = -1;
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static int hf_t30_fif_non_stand_bytes = -1;
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static int hf_t30_t4_frame_num = -1;
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static int hf_t30_t4_data = -1;
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static int hf_t30_partial_page_fcf2 = -1;
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static int hf_t30_partial_page_i1 = -1;
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static int hf_t30_partial_page_i2 = -1;
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static int hf_t30_partial_page_i3 = -1;
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static gint ett_t30 = -1;
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static gint ett_t30_fif = -1;
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/* T38 */
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static dissector_handle_t t38_udp_handle;
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static dissector_handle_t t38_tcp_handle;
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static dissector_handle_t t38_tcp_pdu_handle;
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static dissector_handle_t rtp_handle;
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static guint32 Type_of_msg_value;
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static guint32 Data_Field_field_type_value;
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static guint32 Data_value;
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static guint32 T30ind_value;
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static guint32 Data_Field_item_num;
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static int proto_t38 = -1;
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static int hf_t38_null = -1;
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static int hf_t38_dummy = -1;
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static int hf_t38_IFPPacket = -1;
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static int hf_t38_Type_of_msg = -1;
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static int hf_t38_t30_indicator = -1;
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static int hf_t38_data = -1;
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static int hf_t38_Data_Field = -1;
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static int hf_t38_Data_Field_item = -1;
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static int hf_t38_Data_Field_field_type = -1;
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static int hf_t38_Data_Field_field_data = -1;
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static int hf_t38_UDPTLPacket = -1;
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static int hf_t38_seq_number = -1;
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static int hf_t38_primary_ifp_packet = -1;
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static int hf_t38_primary_ifp_packet_length = -1;
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static int hf_t38_error_recovery = -1;
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static int hf_t38_secondary_ifp_packets = -1;
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static int hf_t38_secondary_ifp_packets_item = -1;
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static int hf_t38_secondary_ifp_packets_item_length = -1;
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static int hf_t38_fec_info = -1;
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static int hf_t38_fec_npackets = -1;
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static int hf_t38_fec_data = -1;
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static int hf_t38_fec_data_item = -1;
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/* T38 setup fields */
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static int hf_t38_setup = -1;
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static int hf_t38_setup_frame = -1;
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static int hf_t38_setup_method = -1;
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/* T38 Data reassemble fields */
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static int hf_data_fragments = -1;
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static int hf_data_fragment = -1;
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static int hf_data_fragment_overlap = -1;
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static int hf_data_fragment_overlap_conflicts = -1;
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static int hf_data_fragment_multiple_tails = -1;
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static int hf_data_fragment_too_long_fragment = -1;
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static int hf_data_fragment_error = -1;
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static int hf_data_reassembled_in = -1;
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static gint ett_t38 = -1;
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static gint ett_t38_IFPPacket = -1;
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static gint ett_t38_Type_of_msg = -1;
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static gint ett_t38_t30_indicator = -1;
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static gint ett_t38_data = -1;
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static gint ett_t38_Data_Field = -1;
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static gint ett_t38_Data_Field_item = -1;
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static gint ett_t38_Data_Field_field_type = -1;
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static gint ett_t38_UDPTLPacket = -1;
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static gint ett_t38_error_recovery = -1;
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static gint ett_t38_secondary_ifp_packets = -1;
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static gint ett_t38_fec_info = -1;
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static gint ett_t38_fec_data = -1;
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static gint ett_t38_setup = -1;
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static gint ett_data_fragment = -1;
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static gint ett_data_fragments = -1;
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static gboolean primary_part = TRUE;
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static guint32 seq_number = 0;
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/* Tables for reassembly of Data fragments. */
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static GHashTable *data_fragment_table = NULL;
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static GHashTable *data_reassembled_table = NULL;
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static const fragment_items data_frag_items = {
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/* Fragment subtrees */
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&ett_data_fragment,
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&ett_data_fragments,
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/* Fragment fields */
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&hf_data_fragments,
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&hf_data_fragment,
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&hf_data_fragment_overlap,
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&hf_data_fragment_overlap_conflicts,
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&hf_data_fragment_multiple_tails,
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&hf_data_fragment_too_long_fragment,
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&hf_data_fragment_error,
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/* Reassembled in field */
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&hf_data_reassembled_in,
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/* Tag */
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"Data fragments"
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};
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typedef struct _fragment_key {
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address src;
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address dst;
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guint32 id;
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} fragment_key;
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static conversation_t *p_conv= NULL;
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static t38_conv *p_t38_conv = NULL;
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static t38_conv *p_t38_packet_conv = NULL;
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static t38_conv_info *p_t38_conv_info = NULL;
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static t38_conv_info *p_t38_packet_conv_info = NULL;
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/* RTP Version is the first 2 bits of the first octet in the UDP payload*/
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#define RTP_VERSION(octet) ((octet) >> 6)
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void proto_reg_handoff_t38(void);
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static void show_setup_info(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, conversation_t *p_conv, t38_conv *p_t38_conv);
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/* Preferences bool to control whether or not setup info should be shown */
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static gboolean global_t38_show_setup_info = TRUE;
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/* Can tap up to 4 T38 packets within same packet */
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/* We only tap the primary part, not the redundancy */
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#define MAX_T38_MESSAGES_IN_PACKET 4
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static t38_packet_info t38_info_arr[MAX_T38_MESSAGES_IN_PACKET];
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static int t38_info_current=0;
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static t38_packet_info *t38_info=NULL;
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static void t38_defragment_init(void)
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{
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/* Init reassemble tables */
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fragment_table_init(&data_fragment_table);
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reassembled_table_init(&data_reassembled_table);
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}
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/* Set up an T38 conversation */
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void t38_add_address(packet_info *pinfo,
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address *addr, int port,
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int other_port,
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const gchar *setup_method, guint32 setup_frame_number)
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{
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address null_addr;
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conversation_t* p_conv;
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t38_conv* p_conv_data = NULL;
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/*
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* If this isn't the first time this packet has been processed,
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* we've already done this work, so we don't need to do it
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* again.
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*/
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if (pinfo->fd->flags.visited)
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{
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return;
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}
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SET_ADDRESS(&null_addr, AT_NONE, 0, NULL);
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/*
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* Check if the ip address and port combination is not
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* already registered as a conversation.
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*/
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p_conv = find_conversation( setup_frame_number, addr, &null_addr, PT_UDP, port, other_port,
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NO_ADDR_B | (!other_port ? NO_PORT_B : 0));
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/*
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* If not, create a new conversation.
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*/
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if ( !p_conv || p_conv->setup_frame != setup_frame_number) {
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p_conv = conversation_new( setup_frame_number, addr, &null_addr, PT_UDP,
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(guint32)port, (guint32)other_port,
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NO_ADDR2 | (!other_port ? NO_PORT2 : 0));
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}
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/* Set dissector */
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conversation_set_dissector(p_conv, t38_udp_handle);
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/*
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* Check if the conversation has data associated with it.
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*/
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p_conv_data = conversation_get_proto_data(p_conv, proto_t38);
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/*
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* If not, add a new data item.
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*/
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if ( ! p_conv_data ) {
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/* Create conversation data */
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p_conv_data = se_alloc(sizeof(t38_conv));
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conversation_add_proto_data(p_conv, proto_t38, p_conv_data);
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}
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/*
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* Update the conversation data.
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*/
|
|
strncpy(p_conv_data->setup_method, setup_method, MAX_T38_SETUP_METHOD_SIZE);
|
|
p_conv_data->setup_method[MAX_T38_SETUP_METHOD_SIZE] = '\0';
|
|
p_conv_data->setup_frame_number = setup_frame_number;
|
|
p_conv_data->src_t38_info.reass_ID = 0;
|
|
p_conv_data->src_t38_info.reass_start_seqnum = -1;
|
|
p_conv_data->src_t38_info.reass_data_type = 0;
|
|
p_conv_data->src_t38_info.last_seqnum = -1;
|
|
p_conv_data->src_t38_info.packet_lost = 0;
|
|
p_conv_data->src_t38_info.burst_lost = 0;
|
|
p_conv_data->src_t38_info.time_first_t4_data = 0;
|
|
|
|
|
|
p_conv_data->dst_t38_info.reass_ID = 0;
|
|
p_conv_data->dst_t38_info.reass_start_seqnum = -1;
|
|
p_conv_data->dst_t38_info.reass_data_type = 0;
|
|
p_conv_data->dst_t38_info.last_seqnum = -1;
|
|
p_conv_data->dst_t38_info.packet_lost = 0;
|
|
p_conv_data->dst_t38_info.burst_lost = 0;
|
|
p_conv_data->dst_t38_info.time_first_t4_data = 0;
|
|
}
|
|
|
|
|
|
/* T30 Routines */
|
|
|
|
static int
|
|
dissect_t30_NULL(tvbuff_t *tvb _U_, int offset, packet_info *pinfo _U_, proto_tree *tree _U_)
|
|
{
|
|
return offset;
|
|
}
|
|
|
|
static const value_string t30_control_vals[] = {
|
|
{ 0xC0, "non-final frames within the procedure" },
|
|
{ 0xC8, "final frames within the procedure" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
|
|
#define T30_FC_DIS 0x01
|
|
#define T30_FC_CSI 0x02
|
|
#define T30_FC_NSF 0x04
|
|
#define T30_FC_DTC 0x81
|
|
#define T30_FC_CIG 0x82
|
|
#define T30_FC_NSC 0x84
|
|
#define T30_FC_PWD 0x83
|
|
#define T30_FC_SEP 0x85
|
|
#define T30_FC_PSA 0x86
|
|
#define T30_FC_CIA 0x87
|
|
#define T30_FC_ISP 0x88
|
|
#define T30_FC_DCS 0x41
|
|
#define T30_FC_TSI 0x42
|
|
#define T30_FC_NSS 0x44
|
|
#define T30_FC_SUB 0x43
|
|
#define T30_FC_SID 0x45
|
|
#define T30_FC_TSA 0x46
|
|
#define T30_FC_IRA 0x47
|
|
#define T30_FC_CFR 0x21
|
|
#define T30_FC_FTT 0x22
|
|
#define T30_FC_CSA 0x24
|
|
#define T30_FC_EOM 0x71
|
|
#define T30_FC_MPS 0x72
|
|
#define T30_FC_EOP 0x74
|
|
#define T30_FC_PRI_EOM 0x79
|
|
#define T30_FC_PRI_MPS 0x7A
|
|
#define T30_FC_PRI_EOP 0x7C
|
|
#define T30_FC_PRI_EOP2 0x78
|
|
#define T30_FC_MCF 0x31
|
|
#define T30_FC_RTP 0x33
|
|
#define T30_FC_RTN 0x32
|
|
#define T30_FC_PIP 0x35
|
|
#define T30_FC_PIN 0x34
|
|
#define T30_FC_FDM 0x3F
|
|
#define T30_FC_DCN 0x5F
|
|
#define T30_FC_CRP 0x58
|
|
#define T30_FC_FNV 0x53
|
|
#define T30_FC_TNR 0x57
|
|
#define T30_FC_TR 0x56
|
|
#define T30_FC_MCF 0x31
|
|
#define T30_FC_PID 0x36
|
|
#define T30_FC_PPR 0x3D
|
|
#define T30_FC_RNR 0x37
|
|
#define T30_FC_CRP 0x58
|
|
#define T30_FC_CTC 0x48
|
|
#define T30_FC_CTR 0x23
|
|
#define T30_FC_PPS 0x7D
|
|
#define T30_FC_EOR 0x73
|
|
#define T30_FC_RR 0x76
|
|
#define T30_FC_ERR 0x38
|
|
#define T30_FC_FCD 0x60
|
|
#define T30_FC_RCP 0x61
|
|
|
|
const value_string t30_facsimile_control_field_vals[] = {
|
|
{ T30_FC_DIS, "Digital Identification Signal" },
|
|
{ T30_FC_CSI, "Called Subscriber Identification" },
|
|
{ T30_FC_NSF, "Non-Standard Facilities" },
|
|
{ T30_FC_DTC, "Digital Transmit Command" },
|
|
{ T30_FC_CIG, "Calling Subscriber Identification" },
|
|
{ T30_FC_NSC, "Non-Standard facilities Command" },
|
|
{ T30_FC_PWD, "Password" },
|
|
{ T30_FC_SEP, "Selective Polling" },
|
|
{ T30_FC_PSA, "Polled Subaddress" },
|
|
{ T30_FC_CIA, "Calling subscriber Internet Address" },
|
|
{ T30_FC_ISP, "Internet Selective Polling Address" },
|
|
{ T30_FC_DCS, "Digital Command Signal" },
|
|
{ T30_FC_TSI, "Transmitting Subscriber Identification" },
|
|
{ T30_FC_NSS, "Non-Standard facilities Set-up" },
|
|
{ T30_FC_SUB, "Subaddress" },
|
|
{ T30_FC_SID, "Sender Identification" },
|
|
{ T30_FC_TSA, "Transmitting Subscriber Internet address" },
|
|
{ T30_FC_IRA, "Internet Routing Address" },
|
|
{ T30_FC_CFR, "Confirmation To Receive" },
|
|
{ T30_FC_FTT, "Failure To Train" },
|
|
{ T30_FC_CSA, "Called Subscriber Internet Address" },
|
|
{ T30_FC_EOM, "End Of Message" },
|
|
{ T30_FC_MPS, "MultiPage Signal" },
|
|
{ T30_FC_EOP, "End Of Procedure" },
|
|
{ T30_FC_PRI_EOM, "Procedure Interrupt-End Of Message" },
|
|
{ T30_FC_PRI_MPS, "Procedure Interrupt-MultiPage Signal" },
|
|
{ T30_FC_PRI_EOP, "Procedure Interrupt-End Of Procedure" },
|
|
{ T30_FC_PRI_EOP2, "Procedure Interrupt-End Of Procedure" },
|
|
{ T30_FC_MCF, "Message Confirmation" },
|
|
{ T30_FC_RTP, "Retrain Positive" },
|
|
{ T30_FC_RTN, "Retrain Negative" },
|
|
{ T30_FC_PIP, "Procedure Interrupt Positive" },
|
|
{ T30_FC_PIN, "Procedure Interrupt Negative" },
|
|
{ T30_FC_FDM, "File Diagnostics Message" },
|
|
{ T30_FC_DCN, "Disconnect" },
|
|
{ T30_FC_CRP, "Command Repeat" },
|
|
{ T30_FC_FNV, "Field Not Valid" },
|
|
{ T30_FC_TNR, "Transmit not ready" },
|
|
{ T30_FC_TR, "Transmit ready" },
|
|
{ T30_FC_MCF, "Message Confirmation" },
|
|
{ T30_FC_PID, "Procedure Interrupt Disconnect" },
|
|
{ T30_FC_PPR, "Partial Page Request" },
|
|
{ T30_FC_RNR, "Receive Not Ready" },
|
|
{ T30_FC_CRP, "Command Repeat" },
|
|
{ T30_FC_CTC, "Continue To Correct" },
|
|
{ T30_FC_CTR, "Response for Continue To Correct" },
|
|
{ T30_FC_PPS, "Partial Page Signal" },
|
|
{ T30_FC_EOR, "End Of Retransmission" },
|
|
{ T30_FC_RR, "Receive Ready" },
|
|
{ T30_FC_ERR, "Response for End of Retransmission" },
|
|
{ T30_FC_FCD, "Facsimile coded data" },
|
|
{ T30_FC_RCP, "Return to control for partial page" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
const value_string t30_facsimile_control_field_vals_short[] = {
|
|
{ T30_FC_DIS, "DIS" },
|
|
{ T30_FC_CSI, "CSI" },
|
|
{ T30_FC_NSF, "NSF" },
|
|
{ T30_FC_DTC, "DTC" },
|
|
{ T30_FC_CIG, "CIG" },
|
|
{ T30_FC_NSC, "NSC" },
|
|
{ T30_FC_PWD, "PWD" },
|
|
{ T30_FC_SEP, "SEP" },
|
|
{ T30_FC_PSA, "PSA" },
|
|
{ T30_FC_CIA, "CIA" },
|
|
{ T30_FC_ISP, "ISP" },
|
|
{ T30_FC_DCS, "DCS" },
|
|
{ T30_FC_TSI, "TSI" },
|
|
{ T30_FC_NSS, "NSS" },
|
|
{ T30_FC_SUB, "SUB" },
|
|
{ T30_FC_SID, "SID" },
|
|
{ T30_FC_TSA, "TSA" },
|
|
{ T30_FC_IRA, "IRA" },
|
|
{ T30_FC_CFR, "CFR" },
|
|
{ T30_FC_FTT, "FTT" },
|
|
{ T30_FC_CSA, "CSA" },
|
|
{ T30_FC_EOM, "EOM" },
|
|
{ T30_FC_MPS, "MPS" },
|
|
{ T30_FC_EOP, "EOP" },
|
|
{ T30_FC_PRI_EOM, "PRI_EOM" },
|
|
{ T30_FC_PRI_MPS, "PRI_MPS" },
|
|
{ T30_FC_PRI_EOP, "EOP" },
|
|
{ T30_FC_PRI_EOP2, "EOP2" },
|
|
{ T30_FC_MCF, "MCF" },
|
|
{ T30_FC_RTP, "RTP" },
|
|
{ T30_FC_RTN, "RTN" },
|
|
{ T30_FC_PIP, "PIP" },
|
|
{ T30_FC_PIN, "PIN" },
|
|
{ T30_FC_FDM, "FDM" },
|
|
{ T30_FC_DCN, "DCN" },
|
|
{ T30_FC_CRP, "CRP" },
|
|
{ T30_FC_FNV, "FNV" },
|
|
{ T30_FC_TNR, "TNR" },
|
|
{ T30_FC_TR, "TR" },
|
|
{ T30_FC_MCF, "MCF" },
|
|
{ T30_FC_PID, "PID" },
|
|
{ T30_FC_PPR, "PPR" },
|
|
{ T30_FC_RNR, "RNR" },
|
|
{ T30_FC_CRP, "CRP" },
|
|
{ T30_FC_CTC, "CTC" },
|
|
{ T30_FC_CTR, "CTR" },
|
|
{ T30_FC_PPS, "PPS" },
|
|
{ T30_FC_EOR, "EOR" },
|
|
{ T30_FC_RR, "RR" },
|
|
{ T30_FC_ERR, "ERR" },
|
|
{ T30_FC_FCD, "FCD" },
|
|
{ T30_FC_RCP, "RCP" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string t30_data_signalling_rate_vals[] = {
|
|
{ 0x00, "ITU-T V.27 ter fall-back mode" },
|
|
{ 0x04, "ITU-T V.27 ter" },
|
|
{ 0x08, "ITU-T V.29" },
|
|
{ 0x0C, "ITU-T V.27 ter and V.29" },
|
|
{ 0x02, "Not used" },
|
|
{ 0x06, "Reserved" },
|
|
{ 0x0A, "Not used" },
|
|
{ 0x0E, "Invalid" },
|
|
{ 0x01, "Not used" },
|
|
{ 0x05, "Reserved" },
|
|
{ 0x09, "Not used" },
|
|
{ 0x0D, "ITU-T V.27 ter, V.29, and V.17" },
|
|
{ 0x03, "Not used" },
|
|
{ 0x07, "Reserved" },
|
|
{ 0x0B, "Not used" },
|
|
{ 0x0F, "Reserved" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string t30_data_signalling_rate_dcs_vals[] = {
|
|
{ 0x00, "2400 bit/s, ITU-T V.27 ter" },
|
|
{ 0x04, "4800 bit/s, ITU-T V.27 ter" },
|
|
{ 0x08, "9600 bit/s, ITU-T V.29" },
|
|
{ 0x0C, "7200 bit/s, ITU-T V.29" },
|
|
{ 0x02, "Invalid" },
|
|
{ 0x06, "Invalid" },
|
|
{ 0x0A, "Reserved" },
|
|
{ 0x0E, "Reserved" },
|
|
{ 0x01, "14 400 bit/s, ITU-T V.17" },
|
|
{ 0x05, "12 000 bit/s, ITU-T V.17" },
|
|
{ 0x09, "9600 bit/s, ITU-T V.17" },
|
|
{ 0x0D, "7200 bit/s, ITU-T V.17" },
|
|
{ 0x03, "Reserved" },
|
|
{ 0x07, "Reserved" },
|
|
{ 0x0B, "Reserved" },
|
|
{ 0x0F, "Reserved" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string t30_recording_width_capabilities_vals[] = {
|
|
{ 0x00, "Scan line length 215 mm +- 1%" },
|
|
{ 0x01, "Scan line length 215 mm +- 1% and Scan line length 255 mm +- 1% and Scan line length 303 mm +- 1%" },
|
|
{ 0x02, "Scan line length 215 mm +- 1% and Scan line length 255 mm +- 1%" },
|
|
{ 0x03, "Invalid" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string t30_recording_width_dcs_vals[] = {
|
|
{ 0x00, "Scan line length 215 mm +- 1%" },
|
|
{ 0x01, "Scan line length 303 mm +- 1%" },
|
|
{ 0x02, "Scan line length 255 mm +- 1%" },
|
|
{ 0x03, "Invalid" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string t30_recording_length_capability_vals[] = {
|
|
{ 0x00, "A4 (297 mm)" },
|
|
{ 0x01, "Unlimited" },
|
|
{ 0x02, "A4 (297 mm) and B4 (364 mm)" },
|
|
{ 0x03, "Invalid" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string t30_recording_length_dcs_vals[] = {
|
|
{ 0x00, "A4 (297 mm)" },
|
|
{ 0x01, "Unlimited" },
|
|
{ 0x02, "B4 (364 mm)" },
|
|
{ 0x03, "Invalid" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string t30_minimum_scan_line_time_rec_vals[] = {
|
|
{ 0x00, "20 ms at 3.85 l/mm: T7.7 = T3.85" },
|
|
{ 0x01, "40 ms at 3.85 l/mm: T7.7 = T3.85" },
|
|
{ 0x02, "10 ms at 3.85 l/mm: T7.7 = T3.85" },
|
|
{ 0x04, "05 ms at 3.85 l/mm: T7.7 = T3.85" },
|
|
{ 0x03, "10 ms at 3.85 l/mm: T7.7 = 1/2 T3.85" },
|
|
{ 0x06, "20 ms at 3.85 l/mm: T7.7 = 1/2 T3.85" },
|
|
{ 0x05, "40 ms at 3.85 l/mm: T7.7 = 1/2 T3.85" },
|
|
{ 0x07, "00 ms at 3.85 l/mm: T7.7 = T3.85" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string t30_partial_page_fcf2_vals[] = {
|
|
{ 0x00, "NULL code which indicates the partial page boundary" },
|
|
{ 0xF1, "EOM in optional T.4 error correction mode" },
|
|
{ 0xF2, "MPS in optional T.4 error correction mode" },
|
|
{ 0xF4, "EOP in optional T.4 error correction mode" },
|
|
{ 0xF8, "EOS in optional T.4 error correction mode" },
|
|
{ 0xF9, "PRI-EOM in optional T.4 error correction mode" },
|
|
{ 0xFA, "PRI-MPS in optional T.4 error correction mode" },
|
|
{ 0xFC, "PRI-EOP in optional T.4 error correction mode" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string t30_minimum_scan_line_time_dcs_vals[] = {
|
|
{ 0x00, "20 ms" },
|
|
{ 0x01, "40 ms" },
|
|
{ 0x02, "10 ms" },
|
|
{ 0x04, "05 ms" },
|
|
{ 0x07, "00 ms" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string t30_SharedDataMemory_capacity_vals[] = {
|
|
{ 0x00, "Not available" },
|
|
{ 0x01, "Level 1 = 1.0 Mbytes" },
|
|
{ 0x02, "Level 2 = 2.0 Mbytes" },
|
|
{ 0x03, "Level 3 = unlimited (i.e. >= 32 Mbytes)" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const true_false_string t30_octets_preferred_value = {
|
|
"64 octets preferred",
|
|
"256 octets preferred",
|
|
};
|
|
|
|
static const true_false_string t30_extension_ind_value = {
|
|
"information continues through the next octet",
|
|
"last octet",
|
|
};
|
|
|
|
static const true_false_string t30_compress_value = {
|
|
"Uncompressed mode",
|
|
"Compressed mode",
|
|
};
|
|
|
|
static const true_false_string t30_minimum_scan_value = {
|
|
"T15.4 = 1/2 T7.7",
|
|
"T15.4 = T7.7",
|
|
};
|
|
|
|
static const true_false_string t30_duplex_operation_value = {
|
|
"Duplex and half duplex operation",
|
|
"Half duplex operation only",
|
|
};
|
|
|
|
static const true_false_string t30_frame_size_dcs_value = {
|
|
"64 octets",
|
|
"256 octets",
|
|
};
|
|
|
|
static const true_false_string t30_res_type_sel_value = {
|
|
"inch based resolution",
|
|
"metric based resolution",
|
|
};
|
|
|
|
guint8 reverse_byte(guint8 val)
|
|
{
|
|
return ( ((val & 0x80)>>7) | ((val & 0x40)>>5) |
|
|
((val & 0x20)>>3) | ((val & 0x10)>>1) |
|
|
((val & 0x08)<<1) | ((val & 0x04)<<3) |
|
|
((val & 0x02)<<5) | ((val & 0x01)<<7) );
|
|
}
|
|
|
|
#define LENGTH_T30_NUM 20
|
|
gchar *
|
|
t30_get_string_numbers(tvbuff_t *tvb, int offset, int len)
|
|
{
|
|
gchar *buf;
|
|
int i;
|
|
|
|
/* the lenght must be 20 bytes per T30 rec*/
|
|
if (len != LENGTH_T30_NUM) return NULL;
|
|
|
|
buf=ep_alloc(LENGTH_T30_NUM+1);
|
|
|
|
for (i=0; i<LENGTH_T30_NUM; i++)
|
|
buf[LENGTH_T30_NUM-i-1] = reverse_byte(tvb_get_guint8(tvb, offset+i));
|
|
|
|
/* add end of string */
|
|
buf[LENGTH_T30_NUM] = '\0';
|
|
|
|
return g_strstrip(buf);
|
|
|
|
}
|
|
|
|
static void
|
|
dissect_t30_numbers(tvbuff_t *tvb, int offset, packet_info *pinfo, int len, proto_tree *tree)
|
|
{
|
|
gchar *str_num=NULL;
|
|
|
|
str_num = t30_get_string_numbers(tvb, offset, len);
|
|
if (str_num) {
|
|
proto_tree_add_string_format(tree, hf_t30_fif_number, tvb, offset, LENGTH_T30_NUM, str_num, "Number: %s", str_num);
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, " - Number:%s", str_num );
|
|
|
|
g_snprintf(t38_info->desc, MAX_T38_DESC, "Num: %s", str_num);
|
|
}
|
|
else {
|
|
proto_tree_add_text(tree, tvb, offset, tvb_reported_length_remaining(tvb, offset), "[MALFORMED OR SHORT PACKET: number of digits must be 20]");
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_str(pinfo->cinfo, COL_INFO, " [MALFORMED OR SHORT PACKET: number of digits must be 20]" );
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_t30_facsimile_coded_data(tvbuff_t *tvb, int offset, packet_info *pinfo, int len, proto_tree *tree)
|
|
{
|
|
guint8 octet;
|
|
gchar *t4_data;
|
|
|
|
if (len < 2) {
|
|
proto_tree_add_text(tree, tvb, offset, tvb_reported_length_remaining(tvb, offset), "[MALFORMED OR SHORT PACKET: FCD length must be at least 2 bytes]");
|
|
expert_add_info_format(pinfo, NULL, PI_MALFORMED, PI_ERROR, "T30 FCD length must be at least 2 bytes");
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_str(pinfo->cinfo, COL_INFO, " [MALFORMED OR SHORT PACKET]");
|
|
return;
|
|
}
|
|
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_uint(tree, hf_t30_t4_frame_num, tvb, offset, 1, reverse_byte(octet));
|
|
offset++;
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, " - Frame num:%d", reverse_byte(octet));
|
|
|
|
g_snprintf(t38_info->desc, MAX_T38_DESC, "Frm num: %d", reverse_byte(octet));
|
|
|
|
t4_data = ep_alloc(len-1);
|
|
tvb_memcpy(tvb, t4_data, offset, len-1);
|
|
proto_tree_add_bytes(tree, hf_t30_t4_data, tvb, offset, len-1, t4_data);
|
|
}
|
|
|
|
static void
|
|
dissect_t30_non_standard_cap(tvbuff_t *tvb, int offset, packet_info *pinfo, int len, proto_tree *tree)
|
|
{
|
|
guint8 octet;
|
|
gchar *non_standard_bytes;
|
|
|
|
if (len < 2) {
|
|
proto_tree_add_text(tree, tvb, offset, tvb_reported_length_remaining(tvb, offset), "[MALFORMED OR SHORT PACKET: NSC length must be at least 2 bytes]");
|
|
expert_add_info_format(pinfo, NULL, PI_MALFORMED, PI_ERROR, "T30 NSC length must be at least 2 bytes");
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_str(pinfo->cinfo, COL_INFO, " [MALFORMED OR SHORT PACKET]");
|
|
return;
|
|
}
|
|
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_uint(tree, hf_t30_fif_country_code, tvb, offset, 1, octet);
|
|
offset++;
|
|
|
|
non_standard_bytes = ep_alloc(len-1);
|
|
tvb_memcpy(tvb, non_standard_bytes, offset, len-1);
|
|
proto_tree_add_bytes(tree, hf_t30_fif_non_stand_bytes, tvb, offset, len-1, non_standard_bytes);
|
|
|
|
}
|
|
|
|
static void
|
|
dissect_t30_partial_page_signal(tvbuff_t *tvb, int offset, packet_info *pinfo, int len, proto_tree *tree)
|
|
{
|
|
guint8 octet, page_count, block_count, frame_count;
|
|
|
|
if (len != 4) {
|
|
proto_tree_add_text(tree, tvb, offset, tvb_reported_length_remaining(tvb, offset), "[MALFORMED OR SHORT PACKET: PPS length must be 4 bytes]");
|
|
expert_add_info_format(pinfo, NULL, PI_MALFORMED, PI_ERROR, "T30 PPS length must be 4 bytes");
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_str(pinfo->cinfo, COL_INFO, " [MALFORMED OR SHORT PACKET]");
|
|
return;
|
|
}
|
|
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_uint(tree, hf_t30_partial_page_fcf2, tvb, offset, 1, octet);
|
|
offset += 1;
|
|
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
page_count = reverse_byte(octet);
|
|
proto_tree_add_uint(tree, hf_t30_partial_page_i1, tvb, offset, 1, page_count);
|
|
offset++;
|
|
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
block_count = reverse_byte(octet);
|
|
proto_tree_add_uint(tree, hf_t30_partial_page_i2, tvb, offset, 1, block_count);
|
|
offset++;
|
|
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
frame_count = reverse_byte(octet);
|
|
proto_tree_add_uint(tree, hf_t30_partial_page_i3, tvb, offset, 1, frame_count);
|
|
offset++;
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, " - PC:%d BC:%d FC:%d", page_count, block_count, frame_count);
|
|
|
|
g_snprintf(t38_info->desc, MAX_T38_DESC, "PC:%d BC:%d FC:%d", page_count, block_count, frame_count);
|
|
|
|
}
|
|
|
|
static void
|
|
dissect_t30_dis_dtc(tvbuff_t *tvb, int offset, packet_info *pinfo, int len, proto_tree *tree, gboolean dis_dtc)
|
|
{
|
|
guint8 octet;
|
|
|
|
if (len < 3) {
|
|
proto_tree_add_text(tree, tvb, offset, tvb_reported_length_remaining(tvb, offset), "[MALFORMED OR SHORT PACKET: DIS length must be at least 4 bytes]");
|
|
expert_add_info_format(pinfo, NULL, PI_MALFORMED, PI_ERROR, "T30 DIS length must be at least 4 bytes");
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_str(pinfo->cinfo, COL_INFO, " [MALFORMED OR SHORT PACKET]");
|
|
return;
|
|
}
|
|
|
|
/* bits 1 to 8 */
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_boolean(tree, hf_t30_fif_sm, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_rtif, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_3gmn, tvb, offset, 1, octet);
|
|
if (dis_dtc) {
|
|
proto_tree_add_boolean(tree, hf_t30_fif_v8c, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_op, tvb, offset, 1, octet);
|
|
}
|
|
/* bits 9 to 16 */
|
|
offset += 1;
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
|
|
if (dis_dtc) proto_tree_add_boolean(tree, hf_t30_fif_rtfc, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_rfo, tvb, offset, 1, octet);
|
|
if (dis_dtc) {
|
|
proto_tree_add_uint(tree, hf_t30_fif_dsr, tvb, offset, 1, octet);
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, " - DSR:%s", val_to_str((octet&0x3C) >> 2, t30_data_signalling_rate_vals, "<unknown>"));
|
|
|
|
g_snprintf(t38_info->desc, MAX_T38_DESC, "DSR:%s", val_to_str((octet&0x3C) >> 2, t30_data_signalling_rate_vals, "<unknown>"));
|
|
}
|
|
else {
|
|
proto_tree_add_uint(tree, hf_t30_fif_dsr_dcs, tvb, offset, 1, octet);
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, " - DSR:%s", val_to_str((octet&0x3C) >> 2, t30_data_signalling_rate_dcs_vals, "<unknown>"));
|
|
|
|
g_snprintf(t38_info->desc, MAX_T38_DESC, "DSR:%s", val_to_str((octet&0x3C) >> 2, t30_data_signalling_rate_dcs_vals, "<unknown>"));
|
|
}
|
|
proto_tree_add_boolean(tree, hf_t30_fif_res, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_tdcc, tvb, offset, 1, octet);
|
|
|
|
/* bits 17 to 24 */
|
|
offset += 1;
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
|
|
if (dis_dtc) {
|
|
proto_tree_add_uint(tree, hf_t30_fif_rwc, tvb, offset, 1, octet);
|
|
proto_tree_add_uint(tree, hf_t30_fif_rlc, tvb, offset, 1, octet);
|
|
proto_tree_add_uint(tree, hf_t30_fif_msltcr, tvb, offset, 1, octet);
|
|
} else {
|
|
proto_tree_add_uint(tree, hf_t30_fif_rw_dcs, tvb, offset, 1, octet);
|
|
proto_tree_add_uint(tree, hf_t30_fif_rl_dcs, tvb, offset, 1, octet);
|
|
proto_tree_add_uint(tree, hf_t30_fif_mslt_dcs, tvb, offset, 1, octet);
|
|
}
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ext, tvb, offset, 1, octet);
|
|
|
|
if ( !(octet & 0x01) || (len < 4) ) return; /* no extension */
|
|
|
|
/* bits 25 to 32 */
|
|
offset += 1;
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_boolean(tree, hf_t30_fif_cm, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ecm, tvb, offset, 1, octet);
|
|
if (!dis_dtc) proto_tree_add_boolean(tree, hf_t30_fif_fs_dcs, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_t6, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ext, tvb, offset, 1, octet);
|
|
|
|
if ( !(octet & 0x01) || (len < 5) ) return; /* no extension */
|
|
|
|
/* bits 33 to 40 */
|
|
offset += 1;
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_boolean(tree, hf_t30_fif_fvc, tvb, offset, 1, octet);
|
|
if (dis_dtc) {
|
|
proto_tree_add_boolean(tree, hf_t30_fif_mspc, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ps, tvb, offset, 1, octet);
|
|
}
|
|
proto_tree_add_boolean(tree, hf_t30_fif_t43, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_pi, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_vc32k, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ext, tvb, offset, 1, octet);
|
|
|
|
if ( !(octet & 0x01) || (len < 6) ) return; /* no extension */
|
|
|
|
/* bits 41 to 48 */
|
|
offset += 1;
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_boolean(tree, hf_t30_fif_r8x15, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_300x300, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_r16x15, tvb, offset, 1, octet);
|
|
if (dis_dtc) {
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ibrp, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_mbrp, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_msltchr, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_sp, tvb, offset, 1, octet);
|
|
} else {
|
|
proto_tree_add_boolean(tree, hf_t30_fif_rts, tvb, offset, 1, octet);
|
|
}
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ext, tvb, offset, 1, octet);
|
|
|
|
if ( !(octet & 0x01) || (len < 7) ) return; /* no extension */
|
|
|
|
/* bits 49 to 56 */
|
|
offset += 1;
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_boolean(tree, hf_t30_fif_sc, tvb, offset, 1, octet);
|
|
if (dis_dtc) {
|
|
proto_tree_add_boolean(tree, hf_t30_fif_passw, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_rttd, tvb, offset, 1, octet);
|
|
} else {
|
|
proto_tree_add_boolean(tree, hf_t30_fif_sit, tvb, offset, 1, octet);
|
|
}
|
|
proto_tree_add_boolean(tree, hf_t30_fif_bft, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_dtm, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_edi, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ext, tvb, offset, 1, octet);
|
|
|
|
if ( !(octet & 0x01) || (len < 8) ) return; /* no extension */
|
|
|
|
/* bits 57 to 64 */
|
|
offset += 1;
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_boolean(tree, hf_t30_fif_btm, tvb, offset, 1, octet);
|
|
if (dis_dtc) proto_tree_add_boolean(tree, hf_t30_fif_rttcmmd, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_chrm, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_mm, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ext, tvb, offset, 1, octet);
|
|
|
|
if ( !(octet & 0x01) || (len < 9) ) return; /* no extension */
|
|
|
|
/* bits 65 to 72 */
|
|
offset += 1;
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_boolean(tree, hf_t30_fif_pm26, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_dnc, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_do, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_jpeg, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_fcm, tvb, offset, 1, octet);
|
|
if (!dis_dtc) proto_tree_add_boolean(tree, hf_t30_fif_pht, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_12c, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ext, tvb, offset, 1, octet);
|
|
|
|
if ( !(octet & 0x01) || (len < 10) ) return; /* no extension */
|
|
|
|
/* bits 73 to 80 */
|
|
offset += 1;
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ns, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ci, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_cgr, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_nalet, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_naleg, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_spscb, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_spsco, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ext, tvb, offset, 1, octet);
|
|
|
|
if ( !(octet & 0x01) || (len < 11) ) return; /* no extension */
|
|
|
|
/* bits 81 to 88 */
|
|
offset += 1;
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_boolean(tree, hf_t30_fif_hkm, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_rsa, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_oc, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_hfx40, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_acn2c, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_acn3c, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_hfx40i, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ext, tvb, offset, 1, octet);
|
|
|
|
if ( !(octet & 0x01) || (len < 12) ) return; /* no extension */
|
|
|
|
/* bits 89 to 96 */
|
|
offset += 1;
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ahsn2, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ahsn3, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_t441, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_t442, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_t443, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_plmss, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ext, tvb, offset, 1, octet);
|
|
|
|
if ( !(octet & 0x01) || (len < 13) ) return; /* no extension */
|
|
|
|
/* bits 97 to 104 */
|
|
offset += 1;
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_boolean(tree, hf_t30_fif_cg300, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_100x100cg, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_spcbft, tvb, offset, 1, octet);
|
|
if (dis_dtc) {
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ebft, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_isp, tvb, offset, 1, octet);
|
|
}
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ira, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ext, tvb, offset, 1, octet);
|
|
|
|
if ( !(octet & 0x01) || (len < 14) ) return; /* no extension */
|
|
|
|
/* bits 105 to 112 */
|
|
offset += 1;
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_boolean(tree, hf_t30_fif_600x600, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_1200x1200, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_300x600, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_400x800, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_600x1200, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_cg600x600, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_cg1200x1200, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ext, tvb, offset, 1, octet);
|
|
|
|
if ( !(octet & 0x01) || (len < 15) ) return; /* no extension */
|
|
|
|
/* bits 113 to 120 */
|
|
offset += 1;
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_boolean(tree, hf_t30_fif_dspcam, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_dspccm, tvb, offset, 1, octet);
|
|
if (dis_dtc) proto_tree_add_boolean(tree, hf_t30_fif_bwmrcp, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_t45, tvb, offset, 1, octet);
|
|
proto_tree_add_uint(tree, hf_t30_fif_sdmc, tvb, offset, 1, octet);
|
|
proto_tree_add_boolean(tree, hf_t30_fif_ext, tvb, offset, 1, octet);
|
|
|
|
if ( !(octet & 0x01) ) return; /* no extension */
|
|
|
|
}
|
|
|
|
static int
|
|
dissect_t30_hdlc(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_item *it;
|
|
proto_tree *tr;
|
|
proto_tree *tr_fif;
|
|
proto_item *it_fcf;
|
|
guint8 octet;
|
|
guint32 frag_len;
|
|
proto_item *item;
|
|
|
|
if (tvb_reported_length_remaining(tvb, offset) < 3) {
|
|
proto_tree_add_text(tree, tvb, offset, tvb_reported_length_remaining(tvb, offset), "[MALFORMED OR SHORT PACKET: hdlc T30 length must be at least 4 bytes]");
|
|
expert_add_info_format(pinfo, NULL, PI_MALFORMED, PI_ERROR, "T30 length must be at least 4 bytes");
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_str(pinfo->cinfo, COL_INFO, " (HDLC Reassembled: [MALFORMED OR SHORT PACKET])");
|
|
return offset;
|
|
}
|
|
|
|
/* if (tree) {
|
|
proto_item *item;*/
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_str(pinfo->cinfo, COL_INFO, " (HDLC Reassembled:");
|
|
|
|
it=proto_tree_add_protocol_format(tree, proto_t30, tvb, offset, -1,
|
|
"ITU-T Recommendation T.30");
|
|
tr=proto_item_add_subtree(it, ett_t30);
|
|
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
item = proto_tree_add_uint(tr, hf_t30_Address, tvb, offset, 1, octet);
|
|
if (octet != 0xFF) expert_add_info_format(pinfo, item, PI_REASSEMBLE, PI_WARN, "T30 Address must be 0xFF");
|
|
offset += 1;
|
|
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
item = proto_tree_add_uint(tr, hf_t30_Control, tvb, offset, 1, octet);
|
|
if ((octet != 0xC0) && (octet != 0xC8)) expert_add_info_format(pinfo, item, PI_REASSEMBLE, PI_WARN, "T30 Control Field must be 0xC0 or 0xC8");
|
|
offset += 1;
|
|
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
it_fcf = proto_tree_add_uint(tr, hf_t30_Facsimile_Control, tvb, offset, 1, octet & 0x7F);
|
|
offset += 1;
|
|
|
|
tr_fif = proto_item_add_subtree(it_fcf, ett_t30_fif);
|
|
|
|
frag_len = tvb_length_remaining(tvb, offset);
|
|
t38_info->t30_Facsimile_Control = octet;
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, " %s - %s", val_to_str(octet & 0x7F, t30_facsimile_control_field_vals_short, "<unknown>"),
|
|
val_to_str(octet & 0x7F, t30_facsimile_control_field_vals, "<unknown>") );
|
|
|
|
switch (octet & 0x7F) {
|
|
case T30_FC_DIS:
|
|
case T30_FC_DTC:
|
|
dissect_t30_dis_dtc(tvb, offset, pinfo, frag_len, tr_fif, TRUE);
|
|
break;
|
|
case T30_FC_DCS:
|
|
dissect_t30_dis_dtc(tvb, offset, pinfo, frag_len, tr_fif, FALSE);
|
|
break;
|
|
case T30_FC_CSI:
|
|
case T30_FC_CIG:
|
|
case T30_FC_TSI:
|
|
case T30_FC_PWD:
|
|
case T30_FC_SEP:
|
|
case T30_FC_SUB:
|
|
case T30_FC_SID:
|
|
case T30_FC_PSA:
|
|
dissect_t30_numbers(tvb, offset, pinfo, frag_len, tr_fif);
|
|
break;
|
|
case T30_FC_NSF:
|
|
case T30_FC_NSC:
|
|
case T30_FC_NSS:
|
|
dissect_t30_non_standard_cap(tvb, offset, pinfo, frag_len, tr_fif);
|
|
break;
|
|
case T30_FC_FCD:
|
|
dissect_t30_facsimile_coded_data(tvb, offset, pinfo, frag_len, tr_fif);
|
|
break;
|
|
case T30_FC_PPS:
|
|
dissect_t30_partial_page_signal(tvb, offset, pinfo, frag_len, tr_fif);
|
|
break;
|
|
}
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_str(pinfo->cinfo, COL_INFO, ")");
|
|
|
|
/* }*/
|
|
|
|
return offset;
|
|
}
|
|
|
|
|
|
/* T38 Routines */
|
|
|
|
static int
|
|
dissect_t38_NULL(tvbuff_t *tvb _U_, int offset, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_)
|
|
{
|
|
return offset;
|
|
}
|
|
|
|
static const per_choice_t t30_indicator_choice[] = {
|
|
{ 0, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 1, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 2, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 3, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 4, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 5, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 6, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 7, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 8, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 9, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 10, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 11, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 12, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 13, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 14, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 15, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 16, &hf_t38_null, ASN1_NOT_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 17, &hf_t38_null, ASN1_NOT_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 18, &hf_t38_null, ASN1_NOT_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 19, &hf_t38_null, ASN1_NOT_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 20, &hf_t38_null, ASN1_NOT_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 21, &hf_t38_null, ASN1_NOT_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 22, &hf_t38_null, ASN1_NOT_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 0, NULL, 0, NULL }
|
|
};
|
|
|
|
const value_string t30_indicator_vals[] = {
|
|
{ 0, "no-signal" },
|
|
{ 1, "cng" },
|
|
{ 2, "ced" },
|
|
{ 3, "v21-preamble" },
|
|
{ 4, "v27-2400-training" },
|
|
{ 5, "v27-4800-training" },
|
|
{ 6, "v29-7200-training" },
|
|
{ 7, "v29-9600-training" },
|
|
{ 8, "v17-7200-short-training" },
|
|
{ 9, "v17-7200-long-training" },
|
|
{ 10, "v17-9600-short-training" },
|
|
{ 11, "v17-9600-long-training" },
|
|
{ 12, "v17-12000-short-training" },
|
|
{ 13, "v17-12000-long-training" },
|
|
{ 14, "v17-14400-short-training" },
|
|
{ 15, "v17-14400-long-training" },
|
|
{ 16, "v8-ansam" },
|
|
{ 17, "v8-signal" },
|
|
{ 18, "v34-cntl-channel-1200" },
|
|
{ 19, "v34-pri-channel" },
|
|
{ 20, "v34-CC-retrain" },
|
|
{ 21, "v33-12000-training" },
|
|
{ 22, "v33-14400-training" },
|
|
{ 0, NULL },
|
|
};
|
|
|
|
static int
|
|
dissect_t38_T30_Indicator(tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index)
|
|
{
|
|
offset=dissect_per_choice(tvb, offset, actx,
|
|
tree, hf_index, ett_t38_t30_indicator,
|
|
t30_indicator_choice, &T30ind_value);
|
|
|
|
if (check_col(actx->pinfo->cinfo, COL_INFO) && primary_part){
|
|
col_append_fstr(actx->pinfo->cinfo, COL_INFO, " t30ind: %s",
|
|
val_to_str(T30ind_value,t30_indicator_vals,"<unknown>"));
|
|
}
|
|
|
|
/* info for tap */
|
|
if (primary_part)
|
|
t38_info->t30ind_value = T30ind_value;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static const per_choice_t data_choice[] = {
|
|
{ 0, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 1, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 2, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 3, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 4, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 5, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 6, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 7, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 8, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 9, &hf_t38_null, ASN1_NOT_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 10, &hf_t38_null, ASN1_NOT_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 11, &hf_t38_null, ASN1_NOT_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 12, &hf_t38_null, ASN1_NOT_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 13, &hf_t38_null, ASN1_NOT_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 14, &hf_t38_null, ASN1_NOT_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 0, NULL, 0, NULL }
|
|
};
|
|
|
|
const value_string t30_data_vals[] = {
|
|
{ 0, "v21" },
|
|
{ 1, "v27-2400" },
|
|
{ 2, "v27-4800" },
|
|
{ 3, "v29-7200" },
|
|
{ 4, "v29-9600" },
|
|
{ 5, "v17-7200" },
|
|
{ 6, "v17-9600" },
|
|
{ 7, "v17-12000" },
|
|
{ 8, "v17-14400" },
|
|
{ 9, "v8" },
|
|
{ 10, "v34-pri-rate" },
|
|
{ 11, "v34-CC-1200" },
|
|
{ 12, "v34-pri-ch" },
|
|
{ 13, "v33-12000" },
|
|
{ 14, "v33-14400" },
|
|
{ 0, NULL },
|
|
};
|
|
|
|
static int
|
|
dissect_t38_Data(tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index)
|
|
{
|
|
offset=dissect_per_choice(tvb, offset, actx,
|
|
tree, hf_index, ett_t38_data,
|
|
data_choice, &Data_value);
|
|
|
|
if (check_col(actx->pinfo->cinfo, COL_INFO) && primary_part){
|
|
col_append_fstr(actx->pinfo->cinfo, COL_INFO, " data:%s:",
|
|
val_to_str(Data_value,t30_data_vals,"<unknown>"));
|
|
}
|
|
|
|
|
|
/* info for tap */
|
|
if (primary_part)
|
|
t38_info->data_value = Data_value;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static const per_choice_t Type_of_msg_choice[] = {
|
|
{ 0, &hf_t38_t30_indicator, ASN1_NO_EXTENSIONS,
|
|
dissect_t38_T30_Indicator},
|
|
{ 1, &hf_t38_data, ASN1_NO_EXTENSIONS,
|
|
dissect_t38_Data},
|
|
{ 0, NULL, 0, NULL }
|
|
};
|
|
|
|
static const value_string Type_of_msg_vals[] = {
|
|
{ 0, "t30-indicator" },
|
|
{ 1, "data" },
|
|
{ 0, NULL}
|
|
};
|
|
static int
|
|
dissect_t38_Type_of_msg(tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_, proto_tree *tree, int hf_index) {
|
|
offset = dissect_per_choice(tvb, offset, actx, tree, hf_index,
|
|
ett_t38_Type_of_msg, Type_of_msg_choice,
|
|
&Type_of_msg_value);
|
|
|
|
/* info for tap */
|
|
if (primary_part)
|
|
t38_info->type_msg = Type_of_msg_value;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static const per_choice_t Data_Field_field_type_PreCorrigendum_choice[] = {
|
|
{ 0, &hf_t38_null, ASN1_NO_EXTENSIONS,
|
|
dissect_t38_NULL},
|
|
{ 1, &hf_t38_null, ASN1_NO_EXTENSIONS,
|
|
dissect_t38_NULL},
|
|
{ 2, &hf_t38_null, ASN1_NO_EXTENSIONS,
|
|
dissect_t38_NULL},
|
|
{ 3, &hf_t38_null, ASN1_NO_EXTENSIONS,
|
|
dissect_t38_NULL},
|
|
{ 4, &hf_t38_null, ASN1_NO_EXTENSIONS,
|
|
dissect_t38_NULL},
|
|
{ 5, &hf_t38_null, ASN1_NO_EXTENSIONS,
|
|
dissect_t38_NULL},
|
|
{ 6, &hf_t38_null, ASN1_NO_EXTENSIONS,
|
|
dissect_t38_NULL},
|
|
{ 7, &hf_t38_null, ASN1_NO_EXTENSIONS,
|
|
dissect_t38_NULL},
|
|
{ 0, NULL, 0, NULL }
|
|
};
|
|
|
|
|
|
static const per_choice_t Data_Field_field_type_choice[] = {
|
|
{ 0, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 1, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 2, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 3, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 4, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 5, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 6, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 7, &hf_t38_null, ASN1_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 8, &hf_t38_null, ASN1_NOT_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 9, &hf_t38_null, ASN1_NOT_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 10, &hf_t38_null, ASN1_NOT_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 11, &hf_t38_null, ASN1_NOT_EXTENSION_ROOT,
|
|
dissect_t38_NULL},
|
|
{ 0, NULL, 0, NULL }
|
|
};
|
|
|
|
|
|
static const value_string Data_Field_field_type_vals[] = {
|
|
{ 0, "hdlc-data" },
|
|
{ 1, "hdlc-sig-end" },
|
|
{ 2, "hdlc-fcs-OK" },
|
|
{ 3, "hdlc-fcs-BAD" },
|
|
{ 4, "hdlc-fcs-OK-sig-end" },
|
|
{ 5, "hdlc-fcs-BAD-sig-end" },
|
|
{ 6, "t4-non-ecm-data" },
|
|
{ 7, "t4-non-ecm-sig-end" },
|
|
{ 8, "cm-message" },
|
|
{ 9, "jm-message" },
|
|
{ 10, "ci-message" },
|
|
{ 11, "v34-rate" },
|
|
{ 0, NULL },
|
|
};
|
|
|
|
fragment_data *
|
|
force_reassmeble_seq(tvbuff_t *tvb, int offset, packet_info *pinfo, guint32 id,
|
|
GHashTable *fragment_table, guint32 frag_number)
|
|
{
|
|
fragment_key key;
|
|
fragment_data *fd_head;
|
|
fragment_data *fd_i;
|
|
fragment_data *last_fd;
|
|
guint32 dfpos, size, packet_lost, burst_lost, seq_num;
|
|
|
|
/* create key to search hash with */
|
|
key.src = pinfo->src;
|
|
key.dst = pinfo->dst;
|
|
key.id = id;
|
|
|
|
fd_head = g_hash_table_lookup(fragment_table, &key);
|
|
|
|
/* have we already seen this frame ?*/
|
|
if (pinfo->fd->flags.visited) {
|
|
if (fd_head != NULL && fd_head->flags & FD_DEFRAGMENTED) {
|
|
return fd_head;
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
if (fd_head==NULL){
|
|
/* we must have it to continue */
|
|
return NULL;
|
|
}
|
|
|
|
/* check for packet lost and count the burst of packet lost */
|
|
packet_lost = 0;
|
|
burst_lost = 0;
|
|
seq_num = 0;
|
|
for(fd_i=fd_head->next;fd_i;fd_i=fd_i->next) {
|
|
if (seq_num != fd_i->offset) {
|
|
packet_lost += fd_i->offset - seq_num;
|
|
if ( (fd_i->offset - seq_num) > burst_lost ) {
|
|
burst_lost = fd_i->offset - seq_num;
|
|
}
|
|
}
|
|
seq_num = fd_i->offset + 1;
|
|
}
|
|
|
|
/* we have received an entire packet, defragment it and
|
|
* free all fragments
|
|
*/
|
|
size=0;
|
|
last_fd=NULL;
|
|
for(fd_i=fd_head->next;fd_i;fd_i=fd_i->next) {
|
|
if(!last_fd || last_fd->offset!=fd_i->offset){
|
|
size+=fd_i->len;
|
|
}
|
|
last_fd=fd_i;
|
|
}
|
|
fd_head->data = g_malloc(size);
|
|
fd_head->len = size; /* record size for caller */
|
|
|
|
/* add all data fragments */
|
|
dfpos = 0;
|
|
last_fd=NULL;
|
|
for (fd_i=fd_head->next;fd_i && fd_i->len + dfpos <= size;fd_i=fd_i->next) {
|
|
if (fd_i->len) {
|
|
if(!last_fd || last_fd->offset!=fd_i->offset){
|
|
memcpy(fd_head->data+dfpos,fd_i->data,fd_i->len);
|
|
dfpos += fd_i->len;
|
|
} else {
|
|
/* duplicate/retransmission/overlap */
|
|
fd_i->flags |= FD_OVERLAP;
|
|
fd_head->flags |= FD_OVERLAP;
|
|
if( (last_fd->len!=fd_i->datalen)
|
|
|| memcmp(last_fd->data, fd_i->data, last_fd->len) ){
|
|
fd_i->flags |= FD_OVERLAPCONFLICT;
|
|
fd_head->flags |= FD_OVERLAPCONFLICT;
|
|
}
|
|
}
|
|
}
|
|
last_fd=fd_i;
|
|
}
|
|
|
|
/* we have defragmented the pdu, now free all fragments*/
|
|
for (fd_i=fd_head->next;fd_i;fd_i=fd_i->next) {
|
|
if(fd_i->data){
|
|
g_free(fd_i->data);
|
|
fd_i->data=NULL;
|
|
}
|
|
}
|
|
|
|
/* mark this packet as defragmented */
|
|
fd_head->flags |= FD_DEFRAGMENTED;
|
|
fd_head->reassembled_in=pinfo->fd->num;
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, " (t4-data Reassembled: %d pack lost, %d pack burst lost)", packet_lost, burst_lost);
|
|
|
|
p_t38_packet_conv_info->packet_lost = packet_lost;
|
|
p_t38_packet_conv_info->burst_lost = burst_lost;
|
|
|
|
return fd_head;
|
|
}
|
|
|
|
static int
|
|
dissect_t38_Data_Field_field_type(tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index)
|
|
{
|
|
if(use_pre_corrigendum_asn1_specification){
|
|
offset=dissect_per_choice(tvb, offset, actx,
|
|
tree, hf_index, ett_t38_Data_Field_field_type,
|
|
Data_Field_field_type_PreCorrigendum_choice, &Data_Field_field_type_value);
|
|
}
|
|
else{
|
|
offset=dissect_per_choice(tvb, offset, actx,
|
|
tree, hf_index, ett_t38_Data_Field_field_type,
|
|
Data_Field_field_type_choice, &Data_Field_field_type_value);
|
|
}
|
|
|
|
if (check_col(actx->pinfo->cinfo, COL_INFO) && primary_part){
|
|
col_append_fstr(actx->pinfo->cinfo, COL_INFO, " %s",
|
|
val_to_str(Data_Field_field_type_value,Data_Field_field_type_vals,"<unknown>"));
|
|
}
|
|
|
|
/* We only reassmeble packets in the Primary part and in the first two Items. */
|
|
/* There maybe be t38 packets with more than two Items, but reassemble those packets is not easy */
|
|
/* using the current ressaemble functions. */
|
|
/* TODO: reassemble all the Items in one frame */
|
|
if (primary_part && (Data_Field_item_num<2)) {
|
|
if (Data_Field_field_type_value == 2 || Data_Field_field_type_value == 4 || Data_Field_field_type_value == 7) {/* hdlc-fcs-OK or hdlc-fcs-OK-sig-end or t4-non-ecm-sig-end*/
|
|
fragment_data *frag_msg = NULL;
|
|
tvbuff_t* new_tvb = NULL;
|
|
gboolean save_fragmented = actx->pinfo->fragmented;
|
|
|
|
actx->pinfo->fragmented = TRUE;
|
|
|
|
/* if reass_start_seqnum=-1 it means we have received the end of the fragmente, without received any fragment data */
|
|
if (p_t38_packet_conv_info->reass_start_seqnum != -1) {
|
|
frag_msg = fragment_add_seq(tvb, offset, actx->pinfo,
|
|
p_t38_packet_conv_info->reass_ID, /* ID for fragments belonging together */
|
|
data_fragment_table, /* list of message fragments */
|
|
seq_number + Data_Field_item_num - (guint32)p_t38_packet_conv_info->reass_start_seqnum, /* fragment sequence number */
|
|
/*0,*/
|
|
0, /* fragment length */
|
|
FALSE); /* More fragments */
|
|
if ( Data_Field_field_type_value == 7 ) {
|
|
/* if there was packet lost or other errors during the defrag then frag_msg is NULL. This could also means
|
|
* there are out of order packets (e.g, got the tail frame t4-non-ecm-sig-end before the last fragment),
|
|
* but we will assume there was packet lost instead, which is more usual. So, we are going to reassemble the packet
|
|
* and get some stat, like packet lost and burst number of packet lost
|
|
*/
|
|
if (!frag_msg) {
|
|
force_reassmeble_seq(tvb, offset, actx->pinfo,
|
|
p_t38_packet_conv_info->reass_ID, /* ID for fragments belonging together */
|
|
data_fragment_table, /* list of message fragments */
|
|
seq_number + Data_Field_item_num - (guint32)p_t38_packet_conv_info->reass_start_seqnum); /* fragment sequence number */
|
|
} else {
|
|
if (check_col(actx->pinfo->cinfo, COL_INFO))
|
|
col_append_str(actx->pinfo->cinfo, COL_INFO, " (t4-data Reassembled: No packet lost)");
|
|
|
|
g_snprintf(t38_info->desc_comment, MAX_T38_DESC, "No packet lost");
|
|
}
|
|
|
|
|
|
if (p_t38_packet_conv_info->packet_lost) {
|
|
g_snprintf(t38_info->desc_comment, MAX_T38_DESC, " Pack lost: %d, Pack burst lost: %d", p_t38_packet_conv_info->packet_lost, p_t38_packet_conv_info->burst_lost);
|
|
} else {
|
|
g_snprintf(t38_info->desc_comment, MAX_T38_DESC, "No packet lost");
|
|
}
|
|
|
|
new_tvb = process_reassembled_data(tvb, offset, actx->pinfo,
|
|
"Reassembled Message", frag_msg, &data_frag_items, NULL, tree);
|
|
|
|
/* Now reset fragmentation information in pinfo */
|
|
actx->pinfo->fragmented = save_fragmented;
|
|
|
|
t38_info->time_first_t4_data = p_t38_packet_conv_info->time_first_t4_data;
|
|
t38_info->frame_num_first_t4_data = p_t38_packet_conv_info->reass_ID; /* The reass_ID is the Frame number of the first t4 fragment */
|
|
|
|
} else {
|
|
new_tvb = process_reassembled_data(tvb, offset, actx->pinfo,
|
|
"Reassembled Message", frag_msg, &data_frag_items, NULL, tree);
|
|
|
|
/* Now reset fragmentation information in pinfo */
|
|
actx->pinfo->fragmented = save_fragmented;
|
|
|
|
if (new_tvb) dissect_t30_hdlc(new_tvb, 0, actx->pinfo, tree);
|
|
}
|
|
} else {
|
|
if(tree){
|
|
proto_tree_add_text(tree, tvb, offset, tvb_reported_length_remaining(tvb, offset),
|
|
"[RECEIVED END OF FRAGMENT W/OUT ANY FRAGMENT DATA]");
|
|
}
|
|
if (check_col(actx->pinfo->cinfo, COL_INFO)){
|
|
col_append_fstr(actx->pinfo->cinfo, COL_INFO, " [Malformed?]");
|
|
}
|
|
actx->pinfo->fragmented = save_fragmented;
|
|
}
|
|
}
|
|
|
|
/* reset the reassemble ID and the start seq number if it is not HDLC data */
|
|
if ( p_t38_conv && ( ((Data_Field_field_type_value >0) && (Data_Field_field_type_value <6)) || (Data_Field_field_type_value == 7) ) ){
|
|
p_t38_conv_info->reass_ID = 0;
|
|
p_t38_conv_info->reass_start_seqnum = -1;
|
|
}
|
|
t38_info->Data_Field_field_type_value = Data_Field_field_type_value;
|
|
}
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_t38_Data_Field_field_data(tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index)
|
|
{
|
|
tvbuff_t *value_tvb = NULL;
|
|
guint32 value_len;
|
|
|
|
offset=dissect_per_octet_string(tvb, offset, actx,
|
|
tree, hf_index, 1, 65535,
|
|
&value_tvb);
|
|
value_len = tvb_length(value_tvb);
|
|
|
|
if (check_col(actx->pinfo->cinfo, COL_INFO) && primary_part){
|
|
if(value_len < 8){
|
|
col_append_fstr(actx->pinfo->cinfo, COL_INFO, "[%s]",
|
|
tvb_bytes_to_str(value_tvb,0,value_len));
|
|
}
|
|
else {
|
|
col_append_fstr(actx->pinfo->cinfo, COL_INFO, "[%s...]",
|
|
tvb_bytes_to_str(value_tvb,0,7));
|
|
}
|
|
}
|
|
|
|
/* We only reassmeble packets in the Primary part and in the first two Items. */
|
|
/* There maybe be t38 packets with more than two Items, but reassemble those packets is not easy */
|
|
/* using the current ressaemble functions. */
|
|
/* TODO: reassemble all the Items in one frame */
|
|
if (primary_part && (Data_Field_item_num<2)) {
|
|
tvbuff_t* new_tvb = NULL;
|
|
fragment_data *frag_msg = NULL;
|
|
|
|
/* HDLC Data or t4-non-ecm-data */
|
|
if (Data_Field_field_type_value == 0 || Data_Field_field_type_value == 6) { /* 0=HDLC Data or 6=t4-non-ecm-data*/
|
|
gboolean save_fragmented = actx->pinfo->fragmented;
|
|
|
|
actx->pinfo->fragmented = TRUE;
|
|
|
|
/* if we have not reassembled this packet and it is the first fragment, reset the reassemble ID and the start seq number*/
|
|
if (p_t38_packet_conv && p_t38_conv && (p_t38_packet_conv_info->reass_ID == 0)) {
|
|
/* we use the first fragment's frame_number as fragment ID because the protocol doesn't provide it */
|
|
p_t38_conv_info->reass_ID = actx->pinfo->fd->num;
|
|
p_t38_conv_info->reass_start_seqnum = seq_number;
|
|
p_t38_conv_info->time_first_t4_data = nstime_to_sec(&actx->pinfo->fd->rel_ts);
|
|
p_t38_packet_conv_info->reass_ID = p_t38_conv_info->reass_ID;
|
|
p_t38_packet_conv_info->reass_start_seqnum = p_t38_conv_info->reass_start_seqnum;
|
|
p_t38_packet_conv_info->time_first_t4_data = p_t38_conv_info->time_first_t4_data;
|
|
}
|
|
|
|
frag_msg = fragment_add_seq(value_tvb, 0, actx->pinfo,
|
|
p_t38_packet_conv_info->reass_ID, /* ID for fragments belonging together */
|
|
data_fragment_table, /* list of message fragments */
|
|
seq_number - (guint32)p_t38_packet_conv_info->reass_start_seqnum, /* fragment sequence number */
|
|
value_len, /* fragment length */
|
|
TRUE); /* More fragments */
|
|
|
|
new_tvb = process_reassembled_data(tvb, offset, actx->pinfo,
|
|
"Reassembled Message", frag_msg, &data_frag_items, NULL, tree);
|
|
|
|
if (!frag_msg) { /* Not last packet of reassembled */
|
|
if (Data_Field_field_type_value == 0) {
|
|
if (check_col(actx->pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(actx->pinfo->cinfo, COL_INFO," (HDLC fragment %u)", seq_number - (guint32)p_t38_packet_conv_info->reass_start_seqnum);
|
|
} else {
|
|
if (check_col(actx->pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(actx->pinfo->cinfo, COL_INFO," (t4-data fragment %u)", seq_number - (guint32)p_t38_packet_conv_info->reass_start_seqnum);
|
|
}
|
|
}
|
|
|
|
/* Now reset fragmentation information in pinfo */
|
|
actx->pinfo->fragmented = save_fragmented;
|
|
}
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
static const per_sequence_t Data_Field_item_sequence[] = {
|
|
{ &hf_t38_Data_Field_field_type, ASN1_NO_EXTENSIONS, ASN1_NOT_OPTIONAL,
|
|
dissect_t38_Data_Field_field_type },
|
|
{ &hf_t38_Data_Field_field_data, ASN1_NO_EXTENSIONS, ASN1_OPTIONAL,
|
|
dissect_t38_Data_Field_field_data },
|
|
{ NULL, 0, 0, NULL }
|
|
};
|
|
|
|
static int
|
|
dissect_t38_Data_Field_item(tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index)
|
|
{
|
|
offset=dissect_per_sequence(tvb, offset, actx,
|
|
tree, hf_index, ett_t38_Data_Field_item,
|
|
Data_Field_item_sequence);
|
|
|
|
if (primary_part) Data_Field_item_num++;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static const per_sequence_t t38_Data_Field_sequence_of[1] = {
|
|
{ &hf_t38_Data_Field_item, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_t38_Data_Field_item },
|
|
};
|
|
|
|
static int
|
|
dissect_t38_Data_Field(tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_, proto_tree *tree, int hf_index) {
|
|
offset = dissect_per_sequence_of(tvb, offset, actx, tree, hf_index,
|
|
ett_t38_Data_Field, t38_Data_Field_sequence_of);
|
|
|
|
return offset;
|
|
}
|
|
|
|
static const per_sequence_t IFPPacket_sequence[] = {
|
|
{ &hf_t38_Type_of_msg, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_t38_Type_of_msg },
|
|
{ &hf_t38_Data_Field , ASN1_NO_EXTENSIONS , ASN1_OPTIONAL , dissect_t38_Data_Field },
|
|
{ NULL, 0, 0, NULL }
|
|
};
|
|
|
|
static int
|
|
dissect_t38_IFPPacket(tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree)
|
|
{
|
|
offset=dissect_per_sequence(tvb, offset, actx,
|
|
tree, hf_t38_IFPPacket, ett_t38_IFPPacket,
|
|
IFPPacket_sequence);
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_t38_Seq_number(tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index)
|
|
{
|
|
offset=dissect_per_constrained_integer(tvb, offset, actx,
|
|
tree, hf_index, 0, 65535,
|
|
&seq_number, FALSE);
|
|
|
|
/* info for tap */
|
|
if (primary_part)
|
|
t38_info->seq_num = seq_number;
|
|
|
|
if (check_col(actx->pinfo->cinfo, COL_INFO)){
|
|
col_append_fstr(actx->pinfo->cinfo, COL_INFO, "Seq=%05u ",seq_number);
|
|
}
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_t38_Primary_ifp_packet(tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index)
|
|
{
|
|
guint32 length;
|
|
|
|
primary_part = TRUE;
|
|
|
|
offset=dissect_per_length_determinant(tvb, offset, actx,
|
|
tree, hf_t38_primary_ifp_packet_length, &length);
|
|
offset=dissect_t38_IFPPacket(tvb, offset, actx, tree);
|
|
|
|
/* if is a valid t38 packet, add to tap */
|
|
if (p_t38_packet_conv && (!actx->pinfo->in_error_pkt) && ((gint32) seq_number != p_t38_packet_conv_info->last_seqnum))
|
|
tap_queue_packet(t38_tap, actx->pinfo, t38_info);
|
|
|
|
if (p_t38_conv) p_t38_conv_info->last_seqnum = (gint32) seq_number;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_t38_Secondary_ifp_packets_item(tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index)
|
|
{
|
|
guint32 length;
|
|
|
|
offset=dissect_per_length_determinant(tvb, offset, actx,
|
|
tree, hf_t38_secondary_ifp_packets_item_length, &length);
|
|
offset=dissect_t38_IFPPacket(tvb, offset, actx, tree);
|
|
return offset;
|
|
}
|
|
|
|
static const per_sequence_t SEQUENCE_OF_t38_secondary_ifp_packets_sequence_of[1] = {
|
|
{ &hf_t38_dummy, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_t38_Secondary_ifp_packets_item },
|
|
};
|
|
|
|
static int
|
|
dissect_t38_Secondary_ifp_packets(tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index)
|
|
{
|
|
/* When the field-data is not present, we MUST offset 1 byte*/
|
|
if((Data_Field_field_type_value != 0) &&
|
|
(Data_Field_field_type_value != 6) &&
|
|
(Data_Field_field_type_value != 7))
|
|
{
|
|
offset=offset+8;
|
|
}
|
|
|
|
offset=dissect_per_sequence_of(tvb, offset, actx,
|
|
tree, hf_index, ett_t38_secondary_ifp_packets,
|
|
SEQUENCE_OF_t38_secondary_ifp_packets_sequence_of);
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_t38_Fec_npackets(tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index)
|
|
{
|
|
offset=dissect_per_integer(tvb, offset, actx, tree, hf_index, NULL);
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_t38_Fec_data_item(tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index)
|
|
{
|
|
offset=dissect_per_octet_string(tvb, offset, actx,
|
|
tree, hf_index, NO_BOUND, NO_BOUND,
|
|
NULL);
|
|
return offset;
|
|
}
|
|
static const per_sequence_t T_t38_fec_data_sequence_of[1] = {
|
|
{ &hf_t38_fec_data_item, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_t38_Fec_data_item },
|
|
};
|
|
static int
|
|
dissect_t38_Fec_data(tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index)
|
|
{
|
|
offset=dissect_per_sequence_of(tvb, offset, actx,
|
|
tree, hf_index, ett_t38_fec_data,
|
|
T_t38_fec_data_sequence_of);
|
|
return offset;
|
|
}
|
|
|
|
static const per_sequence_t fec_info_sequence[] = {
|
|
{ &hf_t38_fec_npackets, ASN1_NO_EXTENSIONS, ASN1_NOT_OPTIONAL,
|
|
dissect_t38_Fec_npackets },
|
|
{ &hf_t38_fec_data, ASN1_NO_EXTENSIONS, ASN1_NOT_OPTIONAL,
|
|
dissect_t38_Fec_data },
|
|
{ NULL, 0, 0, NULL }
|
|
};
|
|
|
|
static int
|
|
dissect_t38_Fec_info(tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index)
|
|
{
|
|
offset=dissect_per_sequence(tvb, offset, actx,
|
|
tree, hf_index, ett_t38_fec_info,
|
|
fec_info_sequence);
|
|
return offset;
|
|
}
|
|
|
|
static const per_choice_t error_recovery_choice[] = {
|
|
{ 0, &hf_t38_secondary_ifp_packets, ASN1_NO_EXTENSIONS,
|
|
dissect_t38_Secondary_ifp_packets},
|
|
{ 1, &hf_t38_fec_info, ASN1_NO_EXTENSIONS,
|
|
dissect_t38_Fec_info},
|
|
{ 0, NULL, 0, NULL }
|
|
};
|
|
|
|
static const value_string error_recovery_vals[] = {
|
|
{ 0, "secondary-ifp-packets" },
|
|
{ 1, "fec-info" },
|
|
{ 0, NULL}
|
|
};
|
|
|
|
static int
|
|
dissect_t38_Error_recovery(tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index)
|
|
{
|
|
primary_part = FALSE;
|
|
|
|
offset=dissect_per_choice(tvb, offset, actx,
|
|
tree, hf_index, ett_t38_error_recovery,
|
|
error_recovery_choice, NULL);
|
|
|
|
primary_part = TRUE;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static const per_sequence_t UDPTLPacket_sequence[] = {
|
|
{ &hf_t38_seq_number, ASN1_NO_EXTENSIONS, ASN1_NOT_OPTIONAL,
|
|
dissect_t38_Seq_number },
|
|
{ &hf_t38_dummy, ASN1_NO_EXTENSIONS, ASN1_NOT_OPTIONAL,
|
|
dissect_t38_Primary_ifp_packet },
|
|
{ &hf_t38_error_recovery, ASN1_NO_EXTENSIONS, ASN1_NOT_OPTIONAL,
|
|
dissect_t38_Error_recovery },
|
|
{ NULL, 0, 0, NULL }
|
|
};
|
|
|
|
static int
|
|
dissect_t38_UDPTLPacket(tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree)
|
|
{
|
|
/* Initialize to something else than data type */
|
|
Data_Field_field_type_value = 1;
|
|
|
|
offset=dissect_per_sequence(tvb, offset, actx,
|
|
tree, hf_t38_UDPTLPacket, ett_t38_UDPTLPacket,
|
|
UDPTLPacket_sequence);
|
|
return offset;
|
|
}
|
|
|
|
/* initialize the tap t38_info and the conversation */
|
|
static void
|
|
init_t38_info_conv(packet_info *pinfo)
|
|
{
|
|
/* tap info */
|
|
t38_info_current++;
|
|
if (t38_info_current==MAX_T38_MESSAGES_IN_PACKET) {
|
|
t38_info_current=0;
|
|
}
|
|
t38_info = &t38_info_arr[t38_info_current];
|
|
|
|
t38_info->seq_num = 0;
|
|
t38_info->type_msg = 0;
|
|
t38_info->data_value = 0;
|
|
t38_info->t30ind_value =0;
|
|
t38_info->setup_frame_number = 0;
|
|
t38_info->Data_Field_field_type_value = 0;
|
|
t38_info->desc[0] = '\0';
|
|
t38_info->desc_comment[0] = '\0';
|
|
t38_info->time_first_t4_data = 0;
|
|
t38_info->frame_num_first_t4_data = 0;
|
|
|
|
|
|
/*
|
|
p_t38_packet_conv hold the conversation info in each of the packets.
|
|
p_t38_conv hold the conversation info used to reassemble the HDLC packets, and also the Setup info (e.g SDP)
|
|
If we already have p_t38_packet_conv in the packet, it means we already reassembled the HDLC packets, so we don't
|
|
need to use p_t38_conv
|
|
*/
|
|
p_t38_packet_conv = NULL;
|
|
p_t38_conv = NULL;
|
|
|
|
/* Use existing packet info if available */
|
|
p_t38_packet_conv = p_get_proto_data(pinfo->fd, proto_t38);
|
|
|
|
|
|
/* find the conversation used for Reassemble and Setup Info */
|
|
p_conv = find_conversation(pinfo->fd->num, &pinfo->net_src, &pinfo->net_dst,
|
|
pinfo->ptype,
|
|
pinfo->srcport, pinfo->destport, NO_ADDR_B | NO_PORT_B);
|
|
|
|
/* create a conv if it doen't exist */
|
|
if (!p_conv) {
|
|
p_conv = conversation_new(pinfo->fd->num, &pinfo->net_src, &pinfo->net_dst,
|
|
pinfo->ptype, pinfo->srcport, pinfo->destport, NO_ADDR_B | NO_PORT_B);
|
|
|
|
/* Set dissector */
|
|
conversation_set_dissector(p_conv, t38_udp_handle);
|
|
}
|
|
|
|
if (!p_t38_packet_conv) {
|
|
p_t38_conv = conversation_get_proto_data(p_conv, proto_t38);
|
|
|
|
/* create the conversation if it doen't exist */
|
|
if (!p_t38_conv) {
|
|
p_t38_conv = se_alloc(sizeof(t38_conv));
|
|
p_t38_conv->setup_method[0] = '\0';
|
|
p_t38_conv->setup_frame_number = 0;
|
|
|
|
p_t38_conv->src_t38_info.reass_ID = 0;
|
|
p_t38_conv->src_t38_info.reass_start_seqnum = -1;
|
|
p_t38_conv->src_t38_info.reass_data_type = 0;
|
|
p_t38_conv->src_t38_info.last_seqnum = -1;
|
|
p_t38_conv->src_t38_info.packet_lost = 0;
|
|
p_t38_conv->src_t38_info.burst_lost = 0;
|
|
p_t38_conv->src_t38_info.time_first_t4_data = 0;
|
|
|
|
p_t38_conv->dst_t38_info.reass_ID = 0;
|
|
p_t38_conv->dst_t38_info.reass_start_seqnum = -1;
|
|
p_t38_conv->dst_t38_info.reass_data_type = 0;
|
|
p_t38_conv->dst_t38_info.last_seqnum = -1;
|
|
p_t38_conv->dst_t38_info.packet_lost = 0;
|
|
p_t38_conv->dst_t38_info.burst_lost = 0;
|
|
p_t38_conv->dst_t38_info.time_first_t4_data = 0;
|
|
|
|
conversation_add_proto_data(p_conv, proto_t38, p_t38_conv);
|
|
}
|
|
|
|
/* copy the t38 conversation info to the packet t38 conversation */
|
|
p_t38_packet_conv = se_alloc(sizeof(t38_conv));
|
|
strcpy(p_t38_packet_conv->setup_method, p_t38_conv->setup_method);
|
|
p_t38_packet_conv->setup_frame_number = p_t38_conv->setup_frame_number;
|
|
|
|
memcpy(&(p_t38_packet_conv->src_t38_info), &(p_t38_conv->src_t38_info), sizeof(t38_conv_info));
|
|
memcpy(&(p_t38_packet_conv->dst_t38_info), &(p_t38_conv->dst_t38_info), sizeof(t38_conv_info));
|
|
|
|
p_add_proto_data(pinfo->fd, proto_t38, p_t38_packet_conv);
|
|
}
|
|
|
|
if (ADDRESSES_EQUAL(&p_conv->key_ptr->addr1, &pinfo->net_src)) {
|
|
p_t38_conv_info = &(p_t38_conv->src_t38_info);
|
|
p_t38_packet_conv_info = &(p_t38_packet_conv->src_t38_info);
|
|
} else {
|
|
p_t38_conv_info = &(p_t38_conv->dst_t38_info);
|
|
p_t38_packet_conv_info = &(p_t38_packet_conv->dst_t38_info);
|
|
}
|
|
|
|
/* update t38_info */
|
|
t38_info->setup_frame_number = p_t38_packet_conv->setup_frame_number;
|
|
}
|
|
|
|
/* Entry point for dissection */
|
|
static void
|
|
dissect_t38_udp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
guint8 octet1;
|
|
proto_item *it;
|
|
proto_tree *tr;
|
|
guint32 offset=0;
|
|
asn1_ctx_t asn1_ctx;
|
|
|
|
/*
|
|
* XXX - heuristic to check for misidentified packets.
|
|
*/
|
|
if (dissect_possible_rtpv2_packets_as_rtp){
|
|
octet1 = tvb_get_guint8(tvb, offset);
|
|
if (RTP_VERSION(octet1) == 2){
|
|
call_dissector(rtp_handle,tvb,pinfo,tree);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL)){
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "T.38");
|
|
}
|
|
if (check_col(pinfo->cinfo, COL_INFO)){
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
}
|
|
|
|
primary_part = TRUE;
|
|
|
|
/* This indicate the item number in the primary part of the T38 message, it is used for the reassemble of T30 packets */
|
|
Data_Field_item_num = 0;
|
|
|
|
it=proto_tree_add_protocol_format(tree, proto_t38, tvb, 0, -1, "ITU-T Recommendation T.38");
|
|
tr=proto_item_add_subtree(it, ett_t38);
|
|
|
|
/* init tap and conv info */
|
|
init_t38_info_conv(pinfo);
|
|
|
|
/* Show Conversation setup info if exists*/
|
|
if (global_t38_show_setup_info) {
|
|
show_setup_info(tvb, pinfo, tr, p_conv, p_t38_packet_conv);
|
|
}
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO)){
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "UDP: UDPTLPacket ");
|
|
}
|
|
|
|
asn1_ctx_init(&asn1_ctx, ASN1_ENC_PER, TRUE, pinfo);
|
|
offset=dissect_t38_UDPTLPacket(tvb, offset, &asn1_ctx, tr);
|
|
|
|
if (offset&0x07){
|
|
offset=(offset&0xfffffff8)+8;
|
|
}
|
|
if (tvb_length_remaining(tvb,offset>>3)>0){
|
|
if (tr){
|
|
proto_tree_add_text(tr, tvb, offset, tvb_reported_length_remaining(tvb, offset),
|
|
"[MALFORMED PACKET or wrong preference settings]");
|
|
}
|
|
if (check_col(pinfo->cinfo, COL_INFO)){
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, " [Malformed?]");
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_t38_tcp_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_item *it;
|
|
proto_tree *tr;
|
|
guint32 offset=0;
|
|
guint16 ifp_packet_number=1;
|
|
asn1_ctx_t asn1_ctx;
|
|
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL)){
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "T.38");
|
|
}
|
|
if (check_col(pinfo->cinfo, COL_INFO)){
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
}
|
|
|
|
primary_part = TRUE;
|
|
|
|
/* This indicate the item number in the primary part of the T38 message, it is used for the reassemble of T30 packets */
|
|
Data_Field_item_num = 0;
|
|
|
|
it=proto_tree_add_protocol_format(tree, proto_t38, tvb, 0, -1, "ITU-T Recommendation T.38");
|
|
tr=proto_item_add_subtree(it, ett_t38);
|
|
|
|
/* init tap and conv info */
|
|
init_t38_info_conv(pinfo);
|
|
|
|
/* Show Conversation setup info if exists*/
|
|
if (global_t38_show_setup_info) {
|
|
show_setup_info(tvb, pinfo, tr, p_conv, p_t38_packet_conv);
|
|
}
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO)){
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "TCP: IFPPacket");
|
|
}
|
|
|
|
while(tvb_length_remaining(tvb,offset>>3)>0)
|
|
{
|
|
asn1_ctx_init(&asn1_ctx, ASN1_ENC_PER, TRUE, pinfo);
|
|
offset=dissect_t38_IFPPacket(tvb, offset, &asn1_ctx, tr);
|
|
ifp_packet_number++;
|
|
|
|
if(offset&0x07){
|
|
offset=(offset&0xfffffff8)+8;
|
|
}
|
|
|
|
if(tvb_length_remaining(tvb,offset>>3)>0){
|
|
if(t38_tpkt_usage == T38_TPKT_ALWAYS){
|
|
if(tr){
|
|
proto_tree_add_text(tr, tvb, offset, tvb_reported_length_remaining(tvb, offset),
|
|
"[MALFORMED PACKET or wrong preference settings]");
|
|
}
|
|
if (check_col(pinfo->cinfo, COL_INFO)){
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, " [Malformed?]");
|
|
}
|
|
break;
|
|
}
|
|
else {
|
|
if (check_col(pinfo->cinfo, COL_INFO)){
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, " IFPPacket#%u",ifp_packet_number);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
static void
|
|
dissect_t38_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
primary_part = TRUE;
|
|
|
|
if(t38_tpkt_usage == T38_TPKT_ALWAYS){
|
|
dissect_tpkt_encap(tvb,pinfo,tree,t38_tpkt_reassembly,t38_tcp_pdu_handle);
|
|
}
|
|
else if((t38_tpkt_usage == T38_TPKT_NEVER) || (is_tpkt(tvb,1) == -1)){
|
|
dissect_t38_tcp_pdu(tvb, pinfo, tree);
|
|
}
|
|
else {
|
|
dissect_tpkt_encap(tvb,pinfo,tree,t38_tpkt_reassembly,t38_tcp_pdu_handle);
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_t38(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
if(pinfo->ipproto == IP_PROTO_TCP)
|
|
{
|
|
dissect_t38_tcp(tvb, pinfo, tree);
|
|
}
|
|
else if(pinfo->ipproto == IP_PROTO_UDP)
|
|
{
|
|
dissect_t38_udp(tvb, pinfo, tree);
|
|
}
|
|
}
|
|
|
|
/* Look for conversation info and display any setup info found */
|
|
void show_setup_info(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, conversation_t *p_conv, t38_conv *p_t38_conv)
|
|
{
|
|
proto_tree *t38_setup_tree;
|
|
proto_item *ti;
|
|
|
|
if (!p_t38_conv || p_t38_conv->setup_frame_number == 0) {
|
|
/* there is no Setup info */
|
|
return;
|
|
}
|
|
|
|
ti = proto_tree_add_string_format(tree, hf_t38_setup, tvb, 0, 0,
|
|
"",
|
|
"Stream setup by %s (frame %u)",
|
|
p_t38_conv->setup_method,
|
|
p_t38_conv->setup_frame_number);
|
|
PROTO_ITEM_SET_GENERATED(ti);
|
|
t38_setup_tree = proto_item_add_subtree(ti, ett_t38_setup);
|
|
if (t38_setup_tree)
|
|
{
|
|
/* Add details into subtree */
|
|
proto_item* item = proto_tree_add_uint(t38_setup_tree, hf_t38_setup_frame,
|
|
tvb, 0, 0, p_t38_conv->setup_frame_number);
|
|
PROTO_ITEM_SET_GENERATED(item);
|
|
item = proto_tree_add_string(t38_setup_tree, hf_t38_setup_method,
|
|
tvb, 0, 0, p_t38_conv->setup_method);
|
|
PROTO_ITEM_SET_GENERATED(item);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/* Wireshark Protocol Registration */
|
|
void
|
|
proto_register_t38(void)
|
|
{
|
|
static hf_register_info hf[] =
|
|
{
|
|
{ &hf_t38_IFPPacket,
|
|
{ "IFPPacket", "t38.IFPPacket", FT_NONE, BASE_NONE,
|
|
NULL, 0, "IFPPacket sequence", HFILL }},
|
|
{ &hf_t38_Type_of_msg,
|
|
{ "Type of msg", "t38.Type_of_msg_type", FT_UINT32, BASE_DEC,
|
|
VALS(Type_of_msg_vals), 0, "Type_of_msg choice", HFILL }},
|
|
{ &hf_t38_t30_indicator,
|
|
{ "T30 indicator", "t38.t30_indicator", FT_UINT32, BASE_DEC,
|
|
VALS(t30_indicator_vals), 0, "t30_indicator", HFILL }},
|
|
{ &hf_t38_data,
|
|
{ "data", "t38.t38_data", FT_UINT32, BASE_DEC,
|
|
VALS(t30_data_vals), 0, "data", HFILL }},
|
|
{ &hf_t38_Data_Field,
|
|
{ "Data Field", "t38.Data_Field", FT_NONE, BASE_NONE,
|
|
NULL, 0, "Data_Field sequence of", HFILL }},
|
|
{ &hf_t38_Data_Field_item,
|
|
{ "Data_Field_item", "t38.Data_Field_item", FT_NONE, BASE_NONE,
|
|
NULL, 0, "Data_Field_item sequence", HFILL }},
|
|
{ &hf_t38_Data_Field_field_type,
|
|
{ "Data_Field_field_type", "t38.Data_Field_field_type", FT_UINT32, BASE_DEC,
|
|
VALS(Data_Field_field_type_vals), 0, "Data_Field_field_type choice", HFILL }},
|
|
{ &hf_t38_Data_Field_field_data,
|
|
{ "Data_Field_field_data", "t38.Data_Field_field_data", FT_BYTES, BASE_HEX,
|
|
NULL, 0, "Data_Field_field_data octet string", HFILL }},
|
|
{ &hf_t38_UDPTLPacket,
|
|
{ "UDPTLPacket", "t38.UDPTLPacket", FT_NONE, BASE_NONE,
|
|
NULL, 0, "UDPTLPacket sequence", HFILL }},
|
|
{ &hf_t38_seq_number,
|
|
{ "Sequence number", "t38.seq_number", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "seq_number", HFILL }},
|
|
{ &hf_t38_primary_ifp_packet,
|
|
{ "Primary IFPPacket", "t38.primary_ifp_packet", FT_BYTES, BASE_HEX,
|
|
NULL, 0, "primary_ifp_packet octet string", HFILL }},
|
|
{ &hf_t38_primary_ifp_packet_length,
|
|
{ "primary_ifp_packet_length", "t38.primary_ifp_packet_length", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "primary_ifp_packet_length", HFILL }},
|
|
{ &hf_t38_error_recovery,
|
|
{ "Error recovery", "t38.error_recovery", FT_UINT32, BASE_DEC,
|
|
VALS(error_recovery_vals), 0, "error_recovery choice", HFILL }},
|
|
{ &hf_t38_secondary_ifp_packets,
|
|
{ "Secondary IFPPackets", "t38.secondary_ifp_packets", FT_NONE, BASE_NONE,
|
|
NULL, 0, "secondary_ifp_packets sequence of", HFILL }},
|
|
{ &hf_t38_secondary_ifp_packets_item,
|
|
{ "Secondary IFPPackets item", "t38.secondary_ifp_packets_item", FT_BYTES, BASE_HEX,
|
|
NULL, 0, "secondary_ifp_packets_item octet string", HFILL }},
|
|
{ &hf_t38_secondary_ifp_packets_item_length,
|
|
{ "secondary_ifp_packets_item_length", "t38.secondary_ifp_packets_item_length", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "secondary_ifp_packets_item_length", HFILL }},
|
|
{ &hf_t38_fec_info,
|
|
{ "Fec info", "t38.fec_info", FT_NONE, BASE_NONE,
|
|
NULL, 0, "fec_info sequence", HFILL }},
|
|
{ &hf_t38_fec_npackets,
|
|
{ "Fec npackets", "h245.fec_npackets", FT_INT32, BASE_DEC,
|
|
NULL, 0, "fec_npackets value", HFILL }},
|
|
{ &hf_t38_fec_data,
|
|
{ "Fec data", "t38.fec_data", FT_NONE, BASE_NONE,
|
|
NULL, 0, "fec_data sequence of", HFILL }},
|
|
{ &hf_t38_fec_data_item,
|
|
{ "t38_fec_data_item", "t38.t38_fec_data_item", FT_BYTES, BASE_HEX,
|
|
NULL, 0, "t38_fec_data_item octet string", HFILL }},
|
|
{ &hf_t38_setup,
|
|
{ "Stream setup", "t38.setup", FT_STRING, BASE_NONE,
|
|
NULL, 0x0, "Stream setup, method and frame number", HFILL }},
|
|
{ &hf_t38_setup_frame,
|
|
{ "Stream frame", "t38.setup-frame", FT_FRAMENUM, BASE_NONE,
|
|
NULL, 0x0, "Frame that set up this stream", HFILL }},
|
|
{ &hf_t38_setup_method,
|
|
{ "Stream Method", "t38.setup-method", FT_STRING, BASE_NONE,
|
|
NULL, 0x0, "Method used to set up this stream", HFILL }},
|
|
{&hf_data_fragments,
|
|
{"Message fragments", "data.fragments",
|
|
FT_NONE, BASE_NONE, NULL, 0x00, NULL, HFILL } },
|
|
{&hf_data_fragment,
|
|
{"Message fragment", "data.fragment",
|
|
FT_FRAMENUM, BASE_NONE, NULL, 0x00, NULL, HFILL } },
|
|
{&hf_data_fragment_overlap,
|
|
{"Message fragment overlap", "data.fragment.overlap",
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x00, NULL, HFILL } },
|
|
{&hf_data_fragment_overlap_conflicts,
|
|
{"Message fragment overlapping with conflicting data",
|
|
"data.fragment.overlap.conflicts",
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x00, NULL, HFILL } },
|
|
{&hf_data_fragment_multiple_tails,
|
|
{"Message has multiple tail fragments",
|
|
"data.fragment.multiple_tails",
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x00, NULL, HFILL } },
|
|
{&hf_data_fragment_too_long_fragment,
|
|
{"Message fragment too long", "data.fragment.too_long_fragment",
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x00, NULL, HFILL } },
|
|
{&hf_data_fragment_error,
|
|
{"Message defragmentation error", "data.fragment.error",
|
|
FT_FRAMENUM, BASE_NONE, NULL, 0x00, NULL, HFILL } },
|
|
{&hf_data_reassembled_in,
|
|
{"Reassembled in", "data.reassembled.in",
|
|
FT_FRAMENUM, BASE_NONE, NULL, 0x00, NULL, HFILL } },
|
|
};
|
|
|
|
static gint *ett[] =
|
|
{
|
|
&ett_t38,
|
|
&ett_t38_IFPPacket,
|
|
&ett_t38_Type_of_msg,
|
|
&ett_t38_t30_indicator,
|
|
&ett_t38_data,
|
|
&ett_t38_Data_Field,
|
|
&ett_t38_Data_Field_item,
|
|
&ett_t38_Data_Field_field_type,
|
|
&ett_t38_UDPTLPacket,
|
|
&ett_t38_error_recovery,
|
|
&ett_t38_secondary_ifp_packets,
|
|
&ett_t38_fec_info,
|
|
&ett_t38_fec_data,
|
|
&ett_t38_setup,
|
|
&ett_data_fragment,
|
|
&ett_data_fragments
|
|
};
|
|
|
|
static hf_register_info hf_t30[] =
|
|
{
|
|
{ &hf_t30_Address,
|
|
{ "Address", "t30.Address", FT_UINT8, BASE_HEX,
|
|
NULL, 0, "Address Field", HFILL }},
|
|
{ &hf_t30_Control,
|
|
{ "Control", "t30.Control", FT_UINT8, BASE_HEX,
|
|
VALS(t30_control_vals), 0, "Address Field", HFILL }},
|
|
{ &hf_t30_Facsimile_Control,
|
|
{ "Facsimile Control", "t30.FacsimileControl", FT_UINT8, BASE_DEC,
|
|
VALS(t30_facsimile_control_field_vals), 0, "Facsimile Control", HFILL }},
|
|
|
|
{ &hf_t30_fif_sm,
|
|
{ "Store and forward Internet fax- Simple mode (ITU-T T.37)", "t30.fif.sm", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x80, "", HFILL }},
|
|
{ &hf_t30_fif_rtif,
|
|
{ "Real-time Internet fax (ITU T T.38)", "t30.fif.rtif", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x20, "", HFILL }},
|
|
{ &hf_t30_fif_3gmn,
|
|
{ "3rd Generation Mobile Network", "t30.fif.3gmn", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x10, "", HFILL }},
|
|
{ &hf_t30_fif_v8c,
|
|
{ "V.8 capabilities", "t30.fif.v8c", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x04, "", HFILL }},
|
|
{ &hf_t30_fif_op,
|
|
{ "Octets preferred", "t30.fif.op", FT_BOOLEAN, 8,
|
|
TFS(&t30_octets_preferred_value), 0x02, "", HFILL }},
|
|
{ &hf_t30_fif_rtfc,
|
|
{ "Ready to transmit a facsimile document (polling)", "t30.fif.rtfc", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x80, "", HFILL }},
|
|
{ &hf_t30_fif_rfo,
|
|
{ "Receiver fax operation", "t30.fif.rfo", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x40, "", HFILL }},
|
|
{ &hf_t30_fif_dsr,
|
|
{ "Data signalling rate", "t30.fif.dsr", FT_UINT8, BASE_HEX,
|
|
VALS(t30_data_signalling_rate_vals), 0x3C, "", HFILL }},
|
|
{ &hf_t30_fif_dsr_dcs,
|
|
{ "Data signalling rate", "t30.fif.dsr_dcs", FT_UINT8, BASE_HEX,
|
|
VALS(t30_data_signalling_rate_dcs_vals), 0x3C, "", HFILL }},
|
|
{ &hf_t30_fif_res,
|
|
{ "R8x7.7 lines/mm and/or 200x200 pels/25.4 mm", "t30.fif.res", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x02, "", HFILL }},
|
|
{ &hf_t30_fif_tdcc,
|
|
{ "Two dimensional coding capability", "t30.fif.tdcc", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x01, "", HFILL }},
|
|
{ &hf_t30_fif_rwc,
|
|
{ "Recording width capabilities", "t30.fif.rwc", FT_UINT8, BASE_HEX,
|
|
VALS(t30_recording_width_capabilities_vals), 0xC0, "", HFILL }},
|
|
{ &hf_t30_fif_rw_dcs,
|
|
{ "Recording width", "t30.fif.rw_dcs", FT_UINT8, BASE_HEX,
|
|
VALS(t30_recording_width_dcs_vals), 0xC0, "", HFILL }},
|
|
{ &hf_t30_fif_rlc,
|
|
{ "Recording length capability", "t30.fif.rlc", FT_UINT8, BASE_HEX,
|
|
VALS(t30_recording_length_capability_vals), 0x30, "", HFILL }},
|
|
{ &hf_t30_fif_rl_dcs,
|
|
{ "Recording length capability", "t30.fif.rl_dcs", FT_UINT8, BASE_HEX,
|
|
VALS(t30_recording_length_dcs_vals), 0x30, "", HFILL }},
|
|
{ &hf_t30_fif_msltcr,
|
|
{ "Minimum scan line time capability at the receiver", "t30.fif.msltcr", FT_UINT8, BASE_HEX,
|
|
VALS(t30_minimum_scan_line_time_rec_vals), 0x0E, "", HFILL }},
|
|
{ &hf_t30_fif_mslt_dcs,
|
|
{ "Minimum scan line time", "t30.fif.mslt_dcs", FT_UINT8, BASE_HEX,
|
|
VALS(t30_minimum_scan_line_time_dcs_vals), 0x0E, "", HFILL }},
|
|
{ &hf_t30_fif_ext,
|
|
{ "Extension indicator", "t30.fif.ext", FT_BOOLEAN, 8,
|
|
TFS(&t30_extension_ind_value), 0x01, "", HFILL }},
|
|
|
|
{ &hf_t30_fif_cm,
|
|
{ "Compress/Uncompress mode", "t30.fif.cm", FT_BOOLEAN, 8,
|
|
TFS(&t30_compress_value), 0x40, "", HFILL }},
|
|
{ &hf_t30_fif_ecm,
|
|
{ "Error correction mode", "t30.fif.ecm", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x20, "", HFILL }},
|
|
{ &hf_t30_fif_fs_dcs,
|
|
{ "Frame size", "t30.fif.fs_dcm", FT_BOOLEAN, 8,
|
|
TFS(&t30_frame_size_dcs_value), 0x10, "", HFILL }},
|
|
{ &hf_t30_fif_t6,
|
|
{ "T.6 coding capability", "t30.fif.t6", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x02, "", HFILL }},
|
|
|
|
{ &hf_t30_fif_fvc,
|
|
{ "Field valid capability", "t30.fif.fvc", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x80, "", HFILL }},
|
|
{ &hf_t30_fif_mspc,
|
|
{ "Multiple selective polling capability", "t30.fif.mspc", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x40, "", HFILL }},
|
|
{ &hf_t30_fif_ps,
|
|
{ "Polled Subaddress", "t30.fif.ps", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x20, "", HFILL }},
|
|
{ &hf_t30_fif_t43,
|
|
{ "T.43 coding", "t30.fif.t43", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x10, "", HFILL }},
|
|
{ &hf_t30_fif_pi,
|
|
{ "Plane interleave", "t30.fif.pi", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x08, "", HFILL }},
|
|
{ &hf_t30_fif_vc32k,
|
|
{ "Voice coding with 32k ADPCM (ITU T G.726)", "t30.fif.vc32k", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x04, "", HFILL }},
|
|
|
|
{ &hf_t30_fif_r8x15,
|
|
{ "R8x15.4 lines/mm", "t30.fif.r8x15", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x80, "", HFILL }},
|
|
{ &hf_t30_fif_300x300,
|
|
{ "300x300 pels/25.4 mm", "t30.fif.300x300", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x40, "", HFILL }},
|
|
{ &hf_t30_fif_r16x15,
|
|
{ "R16x15.4 lines/mm and/or 400x400 pels/25.4 mm", "t30.fif.r16x15", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x20, "", HFILL }},
|
|
{ &hf_t30_fif_ibrp,
|
|
{ "Inch based resolution preferred", "t30.fif.ibrp", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x10, "", HFILL }},
|
|
{ &hf_t30_fif_mbrp,
|
|
{ "Metric based resolution preferred", "t30.fif.mbrp", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x08, "", HFILL }},
|
|
{ &hf_t30_fif_msltchr,
|
|
{ "Minimum scan line time capability for higher resolutions", "t30.fif.msltchr", FT_BOOLEAN, 8,
|
|
TFS(&t30_minimum_scan_value), 0x04, "", HFILL }},
|
|
{ &hf_t30_fif_rts,
|
|
{ "Resolution type selection", "t30.fif.rts", FT_BOOLEAN, 8,
|
|
TFS(&t30_res_type_sel_value), 0x10, "", HFILL }},
|
|
{ &hf_t30_fif_sp,
|
|
{ "Selective polling", "t30.fif.sp", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x02, "", HFILL }},
|
|
|
|
{ &hf_t30_fif_sc,
|
|
{ "Subaddressing capability", "t30.fif.sc", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x80, "", HFILL }},
|
|
{ &hf_t30_fif_passw,
|
|
{ "Password", "t30.fif.passw", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x40, "", HFILL }},
|
|
{ &hf_t30_fif_sit,
|
|
{ "Sender Identification transmission", "t30.fif.sit", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x40, "", HFILL }},
|
|
{ &hf_t30_fif_rttd,
|
|
{ "Ready to transmit a data file (polling)", "t30.fif.rttd", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x20, "", HFILL }},
|
|
{ &hf_t30_fif_bft,
|
|
{ "Binary File Transfer (BFT)", "t30.fif.bft", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x08, "", HFILL }},
|
|
{ &hf_t30_fif_dtm,
|
|
{ "Document Transfer Mode (DTM)", "t30.fif.dtm", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x04, "", HFILL }},
|
|
{ &hf_t30_fif_edi,
|
|
{ "Electronic Data Interchange (EDI)", "t30.fif.edi", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x02, "", HFILL }},
|
|
|
|
{ &hf_t30_fif_btm,
|
|
{ "Basic Transfer Mode (BTM)", "t30.fif.btm", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x80, "", HFILL }},
|
|
{ &hf_t30_fif_rttcmmd,
|
|
{ "Ready to transmit a character or mixed mode document (polling)", "t30.fif.rttcmmd", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x20, "", HFILL }},
|
|
{ &hf_t30_fif_chrm,
|
|
{ "Character mode", "t30.fif.cm", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x10, "", HFILL }},
|
|
{ &hf_t30_fif_mm,
|
|
{ "Mixed mode (Annex E/T.4)", "t30.fif.mm", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x04, "", HFILL }},
|
|
|
|
{ &hf_t30_fif_pm26,
|
|
{ "Processable mode 26 (ITU T T.505)", "t30.fif.pm26", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x80, "", HFILL }},
|
|
{ &hf_t30_fif_dnc,
|
|
{ "Digital network capability", "t30.fif.dnc", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x40, "", HFILL }},
|
|
{ &hf_t30_fif_do,
|
|
{ "Duplex operation", "t30.fif.do", FT_BOOLEAN, 8,
|
|
TFS(&t30_duplex_operation_value), 0x20, "", HFILL }},
|
|
{ &hf_t30_fif_jpeg,
|
|
{ "JPEG coding", "t30.fif.jpeg", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x10, "", HFILL }},
|
|
{ &hf_t30_fif_fcm,
|
|
{ "Full colour mode", "t30.fif.fcm", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x08, "", HFILL }},
|
|
{ &hf_t30_fif_pht,
|
|
{ "Preferred Huffman tables", "t30.fif.pht", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x08, "", HFILL }},
|
|
{ &hf_t30_fif_12c,
|
|
{ "12 bits/pel component", "t30.fif.12c", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x02, "", HFILL }},
|
|
|
|
{ &hf_t30_fif_ns,
|
|
{ "No subsampling (1:1:1)", "t30.fif.ns", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x80, "", HFILL }},
|
|
{ &hf_t30_fif_ci,
|
|
{ "Custom illuminant", "t30.fif.ci", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x40, "", HFILL }},
|
|
{ &hf_t30_fif_cgr,
|
|
{ "Custom gamut range", "t30.fif.cgr", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x20, "", HFILL }},
|
|
{ &hf_t30_fif_nalet,
|
|
{ "North American Letter (215.9 x 279.4 mm) capability", "t30.fif.nalet", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x10, "", HFILL }},
|
|
{ &hf_t30_fif_naleg,
|
|
{ "North American Legal (215.9 x 355.6 mm) capability", "t30.fif.naleg", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x08, "", HFILL }},
|
|
{ &hf_t30_fif_spscb,
|
|
{ "Single-progression sequential coding (ITU-T T.85) basic capability", "t30.fif.spscb", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x04, "", HFILL }},
|
|
{ &hf_t30_fif_spsco,
|
|
{ "Single-progression sequential coding (ITU-T T.85) optional L0 capability", "t30.fif.spsco", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x02, "", HFILL }},
|
|
|
|
{ &hf_t30_fif_hkm,
|
|
{ "HKM key management capability", "t30.fif.hkm", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x80, "", HFILL }},
|
|
{ &hf_t30_fif_rsa,
|
|
{ "RSA key management capability", "t30.fif.rsa", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x40, "", HFILL }},
|
|
{ &hf_t30_fif_oc,
|
|
{ "Override capability", "t30.fif.oc", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x20, "", HFILL }},
|
|
{ &hf_t30_fif_hfx40,
|
|
{ "HFX40 cipher capability", "t30.fif.hfx40", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x10, "", HFILL }},
|
|
{ &hf_t30_fif_acn2c,
|
|
{ "Alternative cipher number 2 capability", "t30.fif.acn2c", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x08, "", HFILL }},
|
|
{ &hf_t30_fif_acn3c,
|
|
{ "Alternative cipher number 3 capability", "t30.fif.acn3c", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x04, "", HFILL }},
|
|
{ &hf_t30_fif_hfx40i,
|
|
{ "HFX40-I hashing capability", "t30.fif.hfx40i", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x02, "", HFILL }},
|
|
|
|
{ &hf_t30_fif_ahsn2,
|
|
{ "Alternative hashing system number 2 capability", "t30.fif.ahsn2", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x80, "", HFILL }},
|
|
{ &hf_t30_fif_ahsn3,
|
|
{ "Alternative hashing system number 3 capability", "t30.fif.ahsn3", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x40, "", HFILL }},
|
|
{ &hf_t30_fif_t441,
|
|
{ "T.44 (Mixed Raster Content)", "t30.fif.t441", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x10, "", HFILL }},
|
|
{ &hf_t30_fif_t442,
|
|
{ "T.44 (Mixed Raster Content)", "t30.fif.t442", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x08, "", HFILL }},
|
|
{ &hf_t30_fif_t443,
|
|
{ "T.44 (Mixed Raster Content)", "t30.fif.t443", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x04, "", HFILL }},
|
|
{ &hf_t30_fif_plmss,
|
|
{ "Page length maximum strip size for T.44 (Mixed Raster Content)", "t30.fif.plmss", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x02, "", HFILL }},
|
|
|
|
{ &hf_t30_fif_cg300,
|
|
{ "Colour/gray-scale 300 pels/25.4 mm x 300 lines/25.4 mm or 400 pels/25.4 mm x 400 lines/25.4 mm resolution", "t30.fif.cg300", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x80, "", HFILL }},
|
|
{ &hf_t30_fif_100x100cg,
|
|
{ "100 pels/25.4 mm x 100 lines/25.4 mm for colour/gray scale", "t30.fif.100x100cg", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x40, "", HFILL }},
|
|
{ &hf_t30_fif_spcbft,
|
|
{ "Simple Phase C BFT Negotiations capability", "t30.fif.spcbft", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x20, "", HFILL }},
|
|
{ &hf_t30_fif_ebft,
|
|
{ "Extended BFT Negotiations capability", "t30.fif.ebft", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x10, "", HFILL }},
|
|
{ &hf_t30_fif_isp,
|
|
{ "Internet Selective Polling Address (ISP)", "t30.fif.isp", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x08, "", HFILL }},
|
|
{ &hf_t30_fif_ira,
|
|
{ "Internet Routing Address (IRA)", "t30.fif.ira", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x04, "", HFILL }},
|
|
|
|
{ &hf_t30_fif_600x600,
|
|
{ "600 pels/25.4 mm x 600 lines/25.4 mm", "t30.fif.600x600", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x80, "", HFILL }},
|
|
{ &hf_t30_fif_1200x1200,
|
|
{ "1200 pels/25.4 mm x 1200 lines/25.4 mm", "t30.fif.1200x1200", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x40, "", HFILL }},
|
|
{ &hf_t30_fif_300x600,
|
|
{ "300 pels/25.4 mm x 600 lines/25.4 mm", "t30.fif.300x600", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x20, "", HFILL }},
|
|
{ &hf_t30_fif_400x800,
|
|
{ "400 pels/25.4 mm x 800 lines/25.4 mm", "t30.fif.400x800", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x10, "", HFILL }},
|
|
{ &hf_t30_fif_600x1200,
|
|
{ "600 pels/25.4 mm x 1200 lines/25.4 mm", "t30.fif.600x1200", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x08, "", HFILL }},
|
|
{ &hf_t30_fif_cg600x600,
|
|
{ "Colour/gray scale 600 pels/25.4 mm x 600 lines/25.4 mm resolution", "t30.fif.cg600x600", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x04, "", HFILL }},
|
|
{ &hf_t30_fif_cg1200x1200,
|
|
{ "Colour/gray scale 1200 pels/25.4 mm x 1200 lines/25.4 mm resolution", "t30.fif.cg1200x1200", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x02, "", HFILL }},
|
|
|
|
{ &hf_t30_fif_dspcam,
|
|
{ "Double sided printing capability (alternate mode)", "t30.fif.dspcam", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x80, "", HFILL }},
|
|
{ &hf_t30_fif_dspccm,
|
|
{ "Double sided printing capability (continuous mode)", "t30.fif.dspccm", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x40, "", HFILL }},
|
|
{ &hf_t30_fif_bwmrcp,
|
|
{ "Black and white mixed raster content profile (MRCbw)", "t30.fif.bwmrcp", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x20, "", HFILL }},
|
|
{ &hf_t30_fif_t45,
|
|
{ "T.45 (run length colour encoding)", "t30.fif.t45", FT_BOOLEAN, 8,
|
|
TFS(&flags_set_truth), 0x10, "", HFILL }},
|
|
{ &hf_t30_fif_sdmc,
|
|
{ "SharedDataMemory capacity", "t30.fif.sdmc", FT_UINT8, BASE_HEX,
|
|
VALS(t30_SharedDataMemory_capacity_vals), 0x0C, "", HFILL }},
|
|
|
|
{ &hf_t30_fif_number,
|
|
{ "Number", "t30.fif.number", FT_STRING, BASE_NONE, NULL, 0x0,
|
|
"", HFILL }},
|
|
|
|
{ &hf_t30_fif_country_code,
|
|
{ "ITU-T Country code", "t30.fif.country_code", FT_UINT8, BASE_DEC,
|
|
NULL, 0, "ITU-T Country code", HFILL }},
|
|
{ &hf_t30_fif_non_stand_bytes,
|
|
{ "Non-standard capabilities", "t30.fif.non_standard_cap", FT_BYTES, BASE_HEX,
|
|
NULL, 0, "Non-standard capabilities", HFILL }},
|
|
|
|
{ &hf_t30_t4_frame_num,
|
|
{ "T.4 Frame number", "t30.t4.frame_num", FT_UINT8, BASE_DEC,
|
|
NULL, 0, "T.4 Frame number", HFILL }},
|
|
{ &hf_t30_t4_data,
|
|
{ "T.4 Facsimile data field", "t30.t4.data", FT_BYTES, BASE_HEX,
|
|
NULL, 0, "T.4 Facsimile data field", HFILL }},
|
|
|
|
{ &hf_t30_partial_page_fcf2,
|
|
{ "Post-message command", "t30.pps.fcf2", FT_UINT8, BASE_DEC,
|
|
VALS(t30_partial_page_fcf2_vals), 0, "Post-message command", HFILL }},
|
|
{ &hf_t30_partial_page_i1,
|
|
{ "Page counter", "t30.t4.page_count", FT_UINT8, BASE_DEC,
|
|
NULL, 0, "Page counter", HFILL }},
|
|
{ &hf_t30_partial_page_i2,
|
|
{ "Block counter", "t30.t4.block_count", FT_UINT8, BASE_DEC,
|
|
NULL, 0, "Block counter", HFILL }},
|
|
{ &hf_t30_partial_page_i3,
|
|
{ "Frame counter", "t30.t4.frame_count", FT_UINT8, BASE_DEC,
|
|
NULL, 0, "Frame counter", HFILL }},
|
|
};
|
|
|
|
static gint *t30_ett[] =
|
|
{
|
|
&ett_t30,
|
|
&ett_t30_fif,
|
|
};
|
|
|
|
module_t *t38_module;
|
|
|
|
proto_t38 = proto_register_protocol("T.38", "T.38", "t38");
|
|
proto_register_field_array(proto_t38, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
register_dissector("t38", dissect_t38, proto_t38);
|
|
|
|
/* Init reassemble tables for HDLC */
|
|
register_init_routine(t38_defragment_init);
|
|
|
|
t38_tap = register_tap("t38");
|
|
|
|
t38_module = prefs_register_protocol(proto_t38, proto_reg_handoff_t38);
|
|
prefs_register_bool_preference(t38_module, "use_pre_corrigendum_asn1_specification",
|
|
"Use the Pre-Corrigendum ASN.1 specification",
|
|
"Whether the T.38 dissector should decode using the Pre-Corrigendum T.38 "
|
|
"ASN.1 specification (1998).",
|
|
&use_pre_corrigendum_asn1_specification);
|
|
prefs_register_bool_preference(t38_module, "dissect_possible_rtpv2_packets_as_rtp",
|
|
"Dissect possible RTP version 2 packets with RTP dissector",
|
|
"Whether a UDP packet that looks like RTP version 2 packet will "
|
|
"be dissected as RTP packet or T.38 packet. If enabled there is a risk that T.38 UDPTL "
|
|
"packets with sequence number higher than 32767 may be dissected as RTP.",
|
|
&dissect_possible_rtpv2_packets_as_rtp);
|
|
prefs_register_uint_preference(t38_module, "tcp.port",
|
|
"T.38 TCP Port",
|
|
"Set the TCP port for T.38 messages",
|
|
10, &global_t38_tcp_port);
|
|
prefs_register_uint_preference(t38_module, "udp.port",
|
|
"T.38 UDP Port",
|
|
"Set the UDP port for T.38 messages",
|
|
10, &global_t38_udp_port);
|
|
prefs_register_bool_preference(t38_module, "reassembly",
|
|
"Reassemble T.38 PDUs over TPKT over TCP",
|
|
"Whether the dissector should reassemble T.38 PDUs spanning multiple TCP segments "
|
|
"when TPKT is used over TCP. "
|
|
"To use this option, you must also enable \"Allow subdissectors to reassemble TCP streams\" in the TCP protocol settings.",
|
|
&t38_tpkt_reassembly);
|
|
prefs_register_enum_preference(t38_module, "tpkt_usage",
|
|
"TPKT used over TCP",
|
|
"Whether T.38 is used with TPKT for TCP",
|
|
(gint *)&t38_tpkt_usage,t38_tpkt_options,FALSE);
|
|
|
|
prefs_register_bool_preference(t38_module, "show_setup_info",
|
|
"Show stream setup information",
|
|
"Where available, show which protocol and frame caused "
|
|
"this T.38 stream to be created",
|
|
&global_t38_show_setup_info);
|
|
|
|
/* T30 */
|
|
proto_t30 = proto_register_protocol("T.30", "T.30", "t30");
|
|
proto_register_field_array(proto_t30, hf_t30, array_length(hf_t30));
|
|
proto_register_subtree_array(t30_ett, array_length(t30_ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_t38(void)
|
|
{
|
|
static int t38_prefs_initialized = FALSE;
|
|
|
|
if (!t38_prefs_initialized) {
|
|
t38_udp_handle=create_dissector_handle(dissect_t38_udp, proto_t38);
|
|
t38_tcp_handle=create_dissector_handle(dissect_t38_tcp, proto_t38);
|
|
t38_tcp_pdu_handle=create_dissector_handle(dissect_t38_tcp_pdu, proto_t38);
|
|
t38_prefs_initialized = TRUE;
|
|
}
|
|
else {
|
|
dissector_delete("tcp.port", tcp_port, t38_tcp_handle);
|
|
dissector_delete("udp.port", udp_port, t38_udp_handle);
|
|
}
|
|
tcp_port = global_t38_tcp_port;
|
|
udp_port = global_t38_udp_port;
|
|
|
|
dissector_add("tcp.port", tcp_port, t38_tcp_handle);
|
|
dissector_add("udp.port", udp_port, t38_udp_handle);
|
|
|
|
rtp_handle = find_dissector("rtp");
|
|
}
|
|
|
|
|
|
|
|
|