forked from osmocom/wireshark
![Bill Meier](/assets/img/avatar_default.png)
Specifically: - Set packet.h to be the first wireshark #include after config.h and "system" #includes. packet.h added as an #include in some cases when missing. - Remove some #includes included (directly/indirectly) in packet.h. E.g., glib.h. (Done only for those files including packet.h). - As needed, move "system" #includes to be after config.h and before wireshark #includes. - Rework various #include file specifications for consistency. - Misc. Change-Id: Ifaa1a14b50b69fbad38ea4838a49dfe595c54c95 Reviewed-on: https://code.wireshark.org/review/5923 Petri-Dish: Alexis La Goutte <alexis.lagoutte@gmail.com> Reviewed-by: Bill Meier <wmeier@newsguy.com>
540 lines
16 KiB
C
540 lines
16 KiB
C
/* packet-rtp-events.c
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*
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* Routines for RFC 2833 RTP Events dissection
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* Copyright 2003, Kevin A. Noll <knoll[AT]poss.com>
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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* Ref http://www.ietf.org/rfc/rfc4733.txt?number=4733
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*/
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/*
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* This dissector tries to dissect RTP Events.
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*
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* Cisco NSE is now supported, additions by
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* Gonzalo Salgueiro <gsalguei@cisco.com>
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* Chidambaram Arunachalam <carunach@cisco.com>
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* Copyright 2008, Cisco Systems, Inc.
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/prefs.h>
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#include "packet-rtp-events.h"
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#include "packet-rtp.h"
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#include <epan/tap.h>
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void proto_register_rtp_events(void);
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void proto_reg_handoff_rtp_events(void);
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/* rtp_event_payload_type_value is the value used globally
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to set the appropriate payload type
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*/
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static guint rtp_event_payload_type_value = 101;
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/* cisco_nse_pt_value is used globally
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to set the appropriate Cisco NSE payload type value
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*/
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static guint cisco_nse_pt_value = 100;
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/* RTP Event Fields */
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static int proto_rtp_events = -1;
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static int rtp_event_tap = -1;
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static int hf_rtp_events_event = -1; /* one byte */
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static int hf_rtp_events_end = -1; /* one bit */
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static int hf_rtp_events_reserved = -1; /* one bit */
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static int hf_rtp_events_volume = -1; /* six bits */
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static int hf_rtp_events_duration = -1; /* sixteen bits */
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#define RTP_DTMF_0 0
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#define RTP_DTMF_1 1
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#define RTP_DTMF_2 2
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#define RTP_DTMF_3 3
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#define RTP_DTMF_4 4
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#define RTP_DTMF_5 5
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#define RTP_DTMF_6 6
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#define RTP_DTMF_7 7
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#define RTP_DTMF_8 8
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#define RTP_DTMF_9 9
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#define RTP_DTMF_STAR 10
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#define RTP_DTMF_POUND 11
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#define RTP_DTMF_A 12
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#define RTP_DTMF_B 13
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#define RTP_DTMF_C 14
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#define RTP_DTMF_D 15
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#define RTP_DTMF_FLASH 16
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#define RTP_ANS 32
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#define RTP_ANSREV 33
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#define RTP_ANSAM 34
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#define RTP_ANSAMREV 35
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#define RTP_CNG 36
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#define RTP_V21C1B0 37
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#define RTP_V21C1B1 38
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#define RTP_V21C2B0 39
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#define RTP_V21C2B1 40
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#define RTP_CRDI 41
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#define RTP_CRDR 42
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#define RTP_CRE 43
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#define RTP_ESI 44
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#define RTP_ESR 45
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#define RTP_MRDI 46
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#define RTP_MRDR 47
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#define RTP_MRE 48
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#define RTP_CT 49
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#define RTP_OFFHOOK 64
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#define RTP_ONHOOK 65
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#define RTP_DIALTONE 66
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#define RTP_INTDT 67
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#define RTP_SPCDT 68
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#define RTP_2NDDT 69
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#define RTP_RGTONE 70
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#define RTP_SPRGTONE 71
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#define RTP_BUSYTONE 72
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#define RTP_CNGTONE 73
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#define RTP_SPINFOTN 74
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#define RTP_CMFTTONE 75
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#define RTP_HOLDTONE 76
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#define RTP_RECTONE 77
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#define RTP_CLRWTTONE 78
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#define RTP_CWTONE 79
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#define RTP_PAYTONE 80
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#define RTP_POSINDTONE 81
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#define RTP_NEGINDTONE 82
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#define RTP_WARNTONE 83
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#define RTP_INTRTONE 84
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#define RTP_CALLCDTONE 85
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#define RTP_PAYPHONE 86
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#define RTP_CAS 87
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#define RTP_OFFHKWARN 88
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#define RTP_RING 89
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#define RTP_ACCPTTONE 96
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#define RTP_CONFIRMTN 97
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#define RTP_DLTNRECALL 98
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#define RTP_END3WAYTN 99
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#define RTP_FACTONE 100
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#define RTP_LNLOCKTN 101
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#define RTP_NUMUNOBT 102
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#define RTP_OFFERGTONE 103
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#define RTP_PERMSIGTN 104
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#define RTP_PREEMPTTN 105
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#define RTP_QUETONE 106
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#define RTP_REFUSALTN 107
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#define RTP_ROUTETONE 108
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#define RTP_VALIDTONE 109
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#define RTP_WAITGTONE 110
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#define RTP_WARNEOPTN 111
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#define RTP_WARNPIPTN 112
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#define RTP_MF0 128
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#define RTP_MF1 129
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#define RTP_MF2 130
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#define RTP_MF3 131
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#define RTP_MF4 132
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#define RTP_MF5 133
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#define RTP_MF6 134
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#define RTP_MF7 135
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#define RTP_MF8 136
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#define RTP_MF9 137
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#define RTP_K0 138
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#define RTP_K1 139
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#define RTP_K2 140
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#define RTP_S0 141
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#define RTP_S1 142
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#define RTP_S3 143
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#define RTP_WINK 160
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#define RTP_WINKOFF 161
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#define RTP_INCSEIZ 162
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#define RTP_SEIZURE 163
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#define RTP_UNSEIZE 164
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#define RTP_COT 165
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#define RTP_DEFCOT 166
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#define RTP_COTTONE 167
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#define RTP_COTSEND 168
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#define RTP_COTVERFD 170
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#define RTP_LOOPBACK 171
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#define RTP_MWATTTONE 172
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#define RTP_NEWMWATTTN 173
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#define RTP_CISCO_NSE_FAX_PASSTHROUGH_IND 192
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#define RTP_CISCO_NSE_MODEM_PASSTHROUGH_IND 193
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#define RTP_CISCO_NSE_VOICE_MODE_IND 194
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#define RTP_CISCO_NSE_MODEM_RELAY_CAP_IND 199
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#define RTP_CISCO_NSE_FAX_RELAY_IND 200
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#define RTP_CISCO_NSE_ACK 201
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#define RTP_CISCO_NSE_NACK 202
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#define RTP_CISCO_NSE_MODEM_RELAY_IND 203
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static const value_string rtp_event_type_values[] =
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{
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{ RTP_DTMF_0, "DTMF Zero 0" },
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{ RTP_DTMF_1, "DTMF One 1" },
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{ RTP_DTMF_2, "DTMF Two 2" },
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{ RTP_DTMF_3, "DTMF Three 3" },
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{ RTP_DTMF_4, "DTMF Four 4" },
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{ RTP_DTMF_5, "DTMF Five 5" },
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{ RTP_DTMF_6, "DTMF Six 6" },
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{ RTP_DTMF_7, "DTMF Seven 7" },
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{ RTP_DTMF_8, "DTMF Eight 8" },
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{ RTP_DTMF_9, "DTMF Nine 9" },
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{ RTP_DTMF_STAR, "DTMF Star *" },
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{ RTP_DTMF_POUND, "DTMF Pound #" },
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{ RTP_DTMF_A, "DTMF A" },
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{ RTP_DTMF_B, "DTMF B" },
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{ RTP_DTMF_C, "DTMF C" },
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{ RTP_DTMF_D, "DTMF D" },
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{ RTP_DTMF_FLASH, "Flash" },
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{ RTP_ANS, "Fax ANS"},
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{ RTP_ANSREV, "Fax /ANS"},
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{ RTP_ANSAM, "Fax ANSam"},
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{ RTP_ANSAMREV, "Fax /ANSam"},
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{ RTP_CNG, "Fax CNG"},
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{ RTP_V21C1B0, "V.21 channel 1, 0 bit"},
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{ RTP_V21C1B1, "V.21 channel 1, 1 bit"},
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{ RTP_V21C2B0, "V.21 channel 2, 0 bit"},
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{ RTP_V21C2B1, "V.21 channel 2, 1 bit"},
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{ RTP_CRDI, "Fax CRdi"},
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{ RTP_CRDR, "Fax CRdr"},
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{ RTP_CRE, "Fax CRe"},
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{ RTP_ESI, "Fax ESi"},
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{ RTP_ESR, "Fax ESr"},
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{ RTP_MRDI, "Fax MRdi"},
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{ RTP_MRDR, "Fax MRdr"},
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{ RTP_MRE, "Fax MRe"},
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{ RTP_CT, "Fax CT"},
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{ RTP_OFFHOOK, "Off Hook"},
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{ RTP_ONHOOK, "On Hook"},
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{ RTP_DIALTONE, "Dial tone"},
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{ RTP_INTDT, "PABX internal dial tone"},
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{ RTP_SPCDT, "Special dial tone"},
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{ RTP_2NDDT, "Second dial tone"},
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{ RTP_RGTONE, "Ringing tone"},
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{ RTP_SPRGTONE, "Special ringing tone"},
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{ RTP_BUSYTONE, "Busy tone"},
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{ RTP_CNGTONE, "Congestion tone"},
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{ RTP_SPINFOTN, "Special information tone"},
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{ RTP_CMFTTONE, "Comfort tone"},
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{ RTP_HOLDTONE, "Hold tone"},
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{ RTP_RECTONE, "Record tone"},
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{ RTP_CLRWTTONE, "Caller waiting tone"},
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{ RTP_CWTONE, "Call waiting tone"},
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{ RTP_PAYTONE, "Pay tone"},
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{ RTP_POSINDTONE, "Positive indication tone"},
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{ RTP_NEGINDTONE, "Negative indication tone"},
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{ RTP_WARNTONE, "Warning tone"},
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{ RTP_INTRTONE, "Intrusion tone"},
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{ RTP_CALLCDTONE, "Calling card service tone"},
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{ RTP_PAYPHONE, "Payphone recognition tone"},
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{ RTP_CAS, "CPE alerting signal (CAS)"},
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{ RTP_OFFHKWARN, "Off-hook warning tone"},
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{ RTP_RING, "Ring"},
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{ RTP_ACCPTTONE, "Acceptance tone"},
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{ RTP_CONFIRMTN, "Confirmation tone"},
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{ RTP_DLTNRECALL, "Dial tone, recall"},
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{ RTP_END3WAYTN, "End of three party service tone"},
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{ RTP_FACTONE, "Facilities tone"},
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{ RTP_LNLOCKTN, "Line lockout tone"},
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{ RTP_NUMUNOBT, "Number unobtainable tone"},
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{ RTP_OFFERGTONE, "Offering tone"},
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{ RTP_PERMSIGTN, "Permanent signal tone"},
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{ RTP_PREEMPTTN, "Preemption tone"},
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{ RTP_QUETONE, "Queue tone"},
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{ RTP_REFUSALTN, "Refusal tone"},
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{ RTP_ROUTETONE, "Route tone"},
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{ RTP_VALIDTONE, "Valid tone"},
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{ RTP_WAITGTONE, "Waiting tone"},
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{ RTP_WARNEOPTN, "Warning tone (end of period)"},
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{ RTP_WARNPIPTN, "Warning Tone (PIP tone)"},
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{ RTP_MF0, "MF 0"},
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{ RTP_MF1, "MF 1"},
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{ RTP_MF2, "MF 2"},
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{ RTP_MF3, "MF 3"},
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{ RTP_MF4, "MF 4"},
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{ RTP_MF5, "MF 5"},
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{ RTP_MF6, "MF 6"},
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{ RTP_MF7, "MF 7"},
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{ RTP_MF8, "MF 8"},
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{ RTP_MF9, "MF 9"},
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{ RTP_K0, "MF K0 or KP (start-of-pulsing)"},
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{ RTP_K1, "MF K1"},
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{ RTP_K2, "MF K2"},
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{ RTP_S0, "MF S0 to ST (end-of-pulsing)"},
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{ RTP_S1, "MF S1"},
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{ RTP_S3, "MF S3"},
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{ RTP_WINK, "Wink"},
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{ RTP_WINKOFF, "Wink off"},
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{ RTP_INCSEIZ, "Incoming seizure"},
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{ RTP_SEIZURE, "Seizure"},
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{ RTP_UNSEIZE, "Unseize circuit"},
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{ RTP_COT, "Continuity test"},
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{ RTP_DEFCOT, "Default continuity tone"},
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{ RTP_COTTONE, "Continuity tone (single tone)"},
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{ RTP_COTSEND, "Continuity test send"},
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{ RTP_COTVERFD, "Continuity verified"},
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{ RTP_LOOPBACK, "Loopback"},
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{ RTP_MWATTTONE, "Old milliwatt tone (1000 Hz)"},
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{ RTP_NEWMWATTTN, "New milliwatt tone (1004 Hz)"},
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{ RTP_CISCO_NSE_FAX_PASSTHROUGH_IND, "Cisco NSE: Shift to voiceband data mode"},
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{ RTP_CISCO_NSE_MODEM_PASSTHROUGH_IND, "Cisco NSE: Disable echo cancellation"},
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{ RTP_CISCO_NSE_VOICE_MODE_IND, "Cisco NSE: Shift to voice mode"},
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{ RTP_CISCO_NSE_MODEM_RELAY_CAP_IND, "Cisco NSE: Advertise Modem relay capability"},
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{ RTP_CISCO_NSE_FAX_RELAY_IND, "Cisco NSE: Shift to fax relay mode"},
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{ RTP_CISCO_NSE_ACK, "Positive acknowledgement of Cisco NSE"},
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{ RTP_CISCO_NSE_NACK, "Negative acknowledgement of Cisco NSE"},
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{ RTP_CISCO_NSE_MODEM_RELAY_IND , "Cisco NSE: Shift to modem relay mode"},
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{ 0, NULL },
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};
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value_string_ext rtp_event_type_values_ext = VALUE_STRING_EXT_INIT(rtp_event_type_values);
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/* RTP Events fields defining a subtree */
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static gint ett_rtp_events = -1;
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static struct _rtp_event_info rtp_event_info;
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static void
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dissect_rtp_events( tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree )
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{
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proto_item *ti;
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proto_tree *rtp_events_tree;
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unsigned int offset = 0;
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struct _rtp_conversation_info *p_conv_data;
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guint8 rtp_evt;
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guint8 octet;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "RTP EVENT");
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col_clear(pinfo->cinfo, COL_INFO);
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/* Get event fields */
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rtp_evt = tvb_get_guint8(tvb, offset );
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/* get tap info */
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rtp_event_info.info_rtp_evt = rtp_evt;
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p_conv_data = (struct _rtp_conversation_info *)p_get_proto_data(wmem_file_scope(), pinfo, proto_get_id_by_filter_name("rtp"), 0);
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if (p_conv_data)
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rtp_event_info.info_setup_frame_num = p_conv_data->frame_number;
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else
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rtp_event_info.info_setup_frame_num = 0;
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col_add_fstr( pinfo->cinfo, COL_INFO,
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"Payload type=RTP Event, %s",
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val_to_str_ext( rtp_evt, &rtp_event_type_values_ext, "Unknown (%u)" ));
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ti = proto_tree_add_item( tree, proto_rtp_events, tvb, offset, -1, ENC_NA );
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rtp_events_tree = proto_item_add_subtree( ti, ett_rtp_events );
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proto_tree_add_uint ( rtp_events_tree, hf_rtp_events_event, tvb, offset, 1, rtp_evt);
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offset++;
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octet = tvb_get_guint8(tvb, offset);
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proto_tree_add_boolean (rtp_events_tree, hf_rtp_events_end, tvb, offset, 1, octet);
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proto_tree_add_boolean (rtp_events_tree, hf_rtp_events_reserved, tvb, offset, 1, octet);
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proto_tree_add_uint ( rtp_events_tree, hf_rtp_events_volume, tvb, offset, 1, octet);
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offset++;
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/* The duration field indicates the duration of the event or segment
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* being reported, in timestamp units.
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*/
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rtp_event_info.info_duration = tvb_get_ntohs(tvb, offset);
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proto_tree_add_item ( rtp_events_tree, hf_rtp_events_duration, tvb, offset, 2, ENC_BIG_ENDIAN);
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/* set the end info for the tap */
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if (octet & 0x80)
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{
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rtp_event_info.info_end = TRUE;
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} else
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{
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rtp_event_info.info_end = FALSE;
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}
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/* Make end-of-event packets obvious in the info column */
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if ((octet & 0x80))
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{
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col_append_str(pinfo->cinfo, COL_INFO, " (end)");
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}
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tap_queue_packet(rtp_event_tap, pinfo, &rtp_event_info);
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}
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void
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proto_register_rtp_events(void)
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{
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module_t *rtp_events_module;
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static hf_register_info hf[] =
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{
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{
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&hf_rtp_events_event,
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{
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"Event ID",
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"rtpevent.event_id",
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FT_UINT8,
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BASE_DEC | BASE_EXT_STRING,
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&rtp_event_type_values_ext,
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0x0,
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NULL, HFILL
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}
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},
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{
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&hf_rtp_events_end,
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{
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"End of Event",
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"rtpevent.end_of_event",
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FT_BOOLEAN,
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8,
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NULL,
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0x80,
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NULL, HFILL
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}
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},
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{
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&hf_rtp_events_reserved,
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{
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"Reserved",
|
|
"rtpevent.reserved",
|
|
FT_BOOLEAN,
|
|
8,
|
|
NULL,
|
|
0x40,
|
|
NULL, HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtp_events_volume,
|
|
{
|
|
"Volume",
|
|
"rtpevent.volume",
|
|
FT_UINT8,
|
|
BASE_DEC,
|
|
NULL,
|
|
0x3F,
|
|
NULL, HFILL
|
|
}
|
|
},
|
|
|
|
{
|
|
&hf_rtp_events_duration,
|
|
{
|
|
"Event Duration",
|
|
"rtpevent.duration",
|
|
FT_UINT16,
|
|
BASE_DEC,
|
|
NULL,
|
|
0x0,
|
|
NULL, HFILL
|
|
}
|
|
},
|
|
|
|
};
|
|
|
|
static gint *ett[] =
|
|
{
|
|
&ett_rtp_events,
|
|
};
|
|
|
|
|
|
proto_rtp_events = proto_register_protocol("RFC 2833 RTP Event", "RTP Event", "rtpevent");
|
|
proto_register_field_array(proto_rtp_events, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
|
|
/* Register preferences */
|
|
rtp_events_module = prefs_register_protocol (proto_rtp_events, proto_reg_handoff_rtp_events);
|
|
prefs_register_uint_preference (rtp_events_module,
|
|
"event_payload_type_value", "Payload Type for RFC2833 RTP Events",
|
|
"This is the value of the Payload Type field"
|
|
" that specifies RTP Events", 10,
|
|
&rtp_event_payload_type_value);
|
|
|
|
|
|
prefs_register_uint_preference (rtp_events_module,
|
|
"cisco_nse_payload_type_value", "Payload Type for Cisco Named Signaling Events",
|
|
"This is the value of the Payload Type field"
|
|
" that specifies Cisco Named Signaling Events", 10,
|
|
&cisco_nse_pt_value);
|
|
|
|
register_dissector("rtpevent", dissect_rtp_events, proto_rtp_events);
|
|
rtp_event_tap = register_tap("rtpevent");
|
|
}
|
|
|
|
|
|
|
|
void
|
|
proto_reg_handoff_rtp_events(void)
|
|
{
|
|
static dissector_handle_t rtp_events_handle;
|
|
/* saved_payload_type_value is a temporary place to save */
|
|
/* the value so we can properly reinitialize when the */
|
|
/* settings get changed. */
|
|
static guint saved_payload_type_value;
|
|
static guint saved_cisco_nse_pt_value;
|
|
static gboolean rtp_events_prefs_initialized = FALSE;
|
|
|
|
if (!rtp_events_prefs_initialized) {
|
|
rtp_events_handle = find_dissector("rtpevent");
|
|
dissector_add_string("rtp_dyn_payload_type", "telephone-event", rtp_events_handle);
|
|
dissector_add_string("rtp_dyn_payload_type", "X-NSE", rtp_events_handle);
|
|
rtp_events_prefs_initialized = TRUE;
|
|
}
|
|
else {
|
|
dissector_delete_uint("rtp.pt", saved_payload_type_value, rtp_events_handle);
|
|
dissector_delete_uint("rtp.pt", saved_cisco_nse_pt_value, rtp_events_handle);
|
|
}
|
|
|
|
saved_payload_type_value = rtp_event_payload_type_value;
|
|
/* rtp_event_payload_type_value is set from preferences */
|
|
saved_cisco_nse_pt_value = cisco_nse_pt_value;
|
|
/* cisco_nse_pt_value is set from preferences */
|
|
if(saved_payload_type_value != 0){
|
|
dissector_add_uint("rtp.pt", saved_payload_type_value, rtp_events_handle);
|
|
dissector_add_uint("rtp.pt", saved_cisco_nse_pt_value, rtp_events_handle);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* tab-width: 8
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
|
|
* :indentSize=8:tabSize=8:noTabs=false:
|
|
*/
|