summaryrefslogtreecommitdiffstats
path: root/epan/dissectors/packet-iax2.h
blob: acca29a8cac7c68d115f9d8e9770419fded57877 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
/* packet-iax2.h
 *
 * Copyright (C) 2003, Digium
 * Mark Spencer <markster@digium.com>
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */

#ifndef __PACKET_IAX2_H__
#define __PACKET_IAX2_H__

#include <epan/tap-voip.h>
#include <epan/conversation.h>

/* Max version of IAX protocol we support */
#define IAX_PROTO_VERSION	2

#define IAX_MAX_CALLS		32768

#define IAX_FLAG_FULL		0x8000

#define IAX_FLAG_RETRANS	0x8000

#define IAX_FLAG_SC_LOG		0x80

#define IAX_MAX_SHIFT		0x1F

#define IAX_WINDOW		64

#define AST_FRAME_DTMF_END  1       /* A DTMF end event, subclass is the digit */
#define AST_FRAME_VOICE     2       /* Voice data, subclass is AST_FORMAT_* */
#define AST_FRAME_VIDEO     3       /* Video frame, maybe?? :) */
#define AST_FRAME_CONTROL   4       /* A control frame, subclass is AST_CONTROL_* */
#define AST_FRAME_NULL      5       /* An empty, useless frame */
#define AST_FRAME_IAX       6       /* Inter Aterisk Exchange private frame type */
#define AST_FRAME_TEXT      7       /* Text messages */
#define AST_FRAME_IMAGE     8       /* Image Frames */
#define AST_FRAME_HTML      9       /* HTML Frames */
#define AST_FRAME_CNG      10       /* Confort Noise Generation */
#define AST_FRAME_MODEM    11       /* Modem-over-IP datastream */
#define AST_FRAME_DTMF_BEGIN 12     /* A DTMF begin event, subclass is the digit */



/* Subclass for AST_FRAME_IAX */
#define IAX_COMMAND_NEW		1
#define IAX_COMMAND_PING	2
#define IAX_COMMAND_PONG	3
#define IAX_COMMAND_ACK		4
#define IAX_COMMAND_HANGUP	5
#define IAX_COMMAND_REJECT	6
#define IAX_COMMAND_ACCEPT	7
#define IAX_COMMAND_AUTHREQ	8
#define IAX_COMMAND_AUTHREP	9
#define IAX_COMMAND_INVAL	10
#define IAX_COMMAND_LAGRQ	11
#define IAX_COMMAND_LAGRP	12
#define IAX_COMMAND_REGREQ	13	/* Registration request */
#define IAX_COMMAND_REGAUTH	14	/* Registration authentication required */
#define IAX_COMMAND_REGACK	15	/* Registration accepted */
#define IAX_COMMAND_REGREJ	16	/* Registration rejected */
#define IAX_COMMAND_REGREL	17	/* Force release of registration */
#define IAX_COMMAND_VNAK	18	/* If we receive voice before valid first voice frame, send this */
#define IAX_COMMAND_DPREQ	19	/* Request status of a dialplan entry */
#define IAX_COMMAND_DPREP	20	/* Request status of a dialplan entry */
#define IAX_COMMAND_DIAL	21	/* Request a dial on channel brought up TBD */
#define IAX_COMMAND_TXREQ	22	/* Transfer Request */
#define IAX_COMMAND_TXCNT	23	/* Transfer Connect */
#define IAX_COMMAND_TXACC	24	/* Transfer Accepted */
#define IAX_COMMAND_TXREADY	25	/* Transfer ready */
#define IAX_COMMAND_TXREL	26	/* Transfer release */
#define IAX_COMMAND_TXREJ	27	/* Transfer reject */
#define IAX_COMMAND_QUELCH	28	/* Stop audio/video transmission */
#define IAX_COMMAND_UNQUELCH	29	/* Resume audio/video transmission */
#define IAX_COMMAND_POKE	30	/* Like ping, but does not require an open connection */
#define IAX_COMMAND_PAGE	31	/* Paging description */
#define IAX_COMMAND_MWI		32	/* Stand-alone message waiting indicator */
#define IAX_COMMAND_UNSUPPORT	33	/* Unsupported message received */
#define IAX_COMMAND_TRANSFER	34	/* Request remote transfer */
#define IAX_COMMAND_PROVISION   35      /* Provision device */
#define IAX_COMMAND_FWDOWNL     36      /* Download firmware */
#define IAX_COMMAND_FWDATA      37      /* Firmware Data */
#define IAX_COMMAND_TXMEDIA     38      /* Transfer Media */
#define IAX_COMMAND_RTKEY       39      /* Rotate key */
#define IAX_COMMAND_CALLTOKEN   40      /* Call token */

#define IAX_DEFAULT_REG_EXPIRE  60	/* By default require re-registration once per minute */

#define IAX_LINGER_TIMEOUT	10	/* How long to wait before closing bridged call */

#define IAX_DEFAULT_PORTNO	4569

/* IAX Information elements */
#define IAX_IE_CALLED_NUMBER		1		/* Number/extension being called - string */
#define IAX_IE_CALLING_NUMBER		2		/* Calling number - string */
#define IAX_IE_CALLING_ANI		3		/* Calling number ANI for billing  - string */
#define IAX_IE_CALLING_NAME		4		/* Name of caller - string */
#define IAX_IE_CALLED_CONTEXT		5		/* Context for number - string */
#define IAX_IE_USERNAME			6		/* Username (peer or user) for authentication - string */
#define IAX_IE_PASSWORD			7		/* Password for authentication - string */
#define IAX_IE_CAPABILITY		8		/* Actual codec capability - unsigned int */
#define IAX_IE_FORMAT			9		/* Desired codec format - unsigned int */
#define IAX_IE_LANGUAGE			10		/* Desired language - string */
#define IAX_IE_VERSION			11		/* Protocol version - short */
#define IAX_IE_ADSICPE			12		/* CPE ADSI capability - short */
#define IAX_IE_DNID			13		/* Originally dialed DNID - string */
#define IAX_IE_AUTHMETHODS		14		/* Authentication method(s) - short */
#define IAX_IE_CHALLENGE		15		/* Challenge data for MD5/RSA - string */
#define IAX_IE_MD5_RESULT		16		/* MD5 challenge result - string */
#define IAX_IE_RSA_RESULT		17		/* RSA challenge result - string */
#define IAX_IE_APPARENT_ADDR		18		/* Apparent address of peer - struct sockaddr_in */
#define IAX_IE_REFRESH			19		/* When to refresh registration - short */
#define IAX_IE_DPSTATUS			20		/* Dialplan status - short */
#define IAX_IE_CALLNO			21		/* Call number of peer - short */
#define IAX_IE_CAUSE			22		/* Cause - string */
#define IAX_IE_IAX_UNKNOWN		23		/* Unknown IAX command - byte */
#define IAX_IE_MSGCOUNT			24		/* How many messages waiting - short */
#define IAX_IE_AUTOANSWER		25		/* Request auto-answering -- none */
#define IAX_IE_MUSICONHOLD		26		/* Request musiconhold with QUELCH -- none or string */
#define IAX_IE_TRANSFERID		27		/* Transfer Request Identifier -- int */
#define IAX_IE_RDNIS			28		/* Referring DNIS -- string */
#define IAX_IE_PROVISIONING		29		/* Provisioning info */
#define IAX_IE_AESPROVISIONING		30		/* AES Provisioning info */
#define IAX_IE_DATETIME			31		/* Date/Time -- unsigned int */
#define IAX_IE_DEVICETYPE		32		/* Device Type -- string */
#define IAX_IE_SERVICEIDENT		33		/* Service Identifier -- string */
#define IAX_IE_FIRMWAREVER		34		/* Firmware revision -- u16 */
#define IAX_IE_FWBLOCKDESC		35		/* Firmware block description -- u32 */
#define IAX_IE_FWBLOCKDATA		36		/* Firmware block of data -- raw */
#define IAX_IE_PROVVER			37		/* Provisioning Version (u32) */
#define IAX_IE_CALLINGPRES		38		/* Calling presentation (u8) */
#define IAX_IE_CALLINGTON		39		/* Calling type of number (u8) */
#define IAX_IE_CALLINGTNS		40		/* Calling transit network select (u16) */
#define IAX_IE_SAMPLINGRATE		41		/* Supported sampling rates (u16) */
#define IAX_IE_CAUSECODE		42		/* Hangup cause (u8) */
#define IAX_IE_ENCRYPTION		43		/* Encryption format (u16) */
#define IAX_IE_ENCKEY			44		/* Encryption key (raw) */
#define IAX_IE_CODEC_PREFS		45		/* Codec Negotiation */
#define IAX_IE_RR_JITTER		46		/* Received jitter (as in RFC1889) u32 */
#define IAX_IE_RR_LOSS			47		/* Received loss (high byte loss pct, low 24 bits loss count, as in rfc1889 */
#define IAX_IE_RR_PKTS			48		/* Received frames (total frames received) u32 */
#define IAX_IE_RR_DELAY			49		/* Max playout delay for received frames (in ms) u16 */
#define IAX_IE_RR_DROPPED		50		/* Dropped frames (presumably by jitterbuf) u32 */
#define IAX_IE_RR_OOO			51		/* Frames received Out of Order u32 */
#define IAX_IE_VARIABLE			52		/* IAX variable transmission */
#define IAX_IE_OSPTOKEN			53		/* OSP Token */
#define IAX_IE_CALLTOKEN		54		/* Call Token */
#define IAX_IE_CAPABILITY2		55		/* Codec capability */
#define IAX_IE_FORMAT2			56		/* Desired codec capability */
#define IAX_IE_DATAFORMAT		255		/* Data call format -- iax_dataformat_t */

/* hangup cause codes */
#define AST_CAUSE_UNALLOCATED				1
#define AST_CAUSE_NO_ROUTE_TRANSIT_NET			2
#define AST_CAUSE_NO_ROUTE_DESTINATION			3
#define AST_CAUSE_MISDIALLED_TRUNK_PREFIX		5
#define AST_CAUSE_CHANNEL_UNACCEPTABLE			6
#define AST_CAUSE_CALL_AWARDED_DELIVERED		7
#define AST_CAUSE_PRE_EMPTED				8
#define AST_CAUSE_NUMBER_PORTED_NOT_HERE		14
#define AST_CAUSE_NORMAL_CLEARING			16
#define AST_CAUSE_USER_BUSY				17
#define AST_CAUSE_NO_USER_RESPONSE			18
#define AST_CAUSE_NO_ANSWER				19
#define AST_CAUSE_SUBSCRIBER_ABSENT			20
#define AST_CAUSE_CALL_REJECTED				21
#define AST_CAUSE_NUMBER_CHANGED			22
#define AST_CAUSE_REDIRECTED_TO_NEW_DESTINATION	23
#define AST_CAUSE_ANSWERED_ELSEWHERE			26
#define AST_CAUSE_DESTINATION_OUT_OF_ORDER		27
#define AST_CAUSE_INVALID_NUMBER_FORMAT			28
#define AST_CAUSE_FACILITY_REJECTED			29
#define AST_CAUSE_RESPONSE_TO_STATUS_ENQUIRY		30
#define AST_CAUSE_NORMAL_UNSPECIFIED			31
#define AST_CAUSE_NORMAL_CIRCUIT_CONGESTION		34
#define AST_CAUSE_NETWORK_OUT_OF_ORDER			38
#define AST_CAUSE_NORMAL_TEMPORARY_FAILURE		41
#define AST_CAUSE_SWITCH_CONGESTION			42
#define AST_CAUSE_ACCESS_INFO_DISCARDED			43
#define AST_CAUSE_REQUESTED_CHAN_UNAVAIL		44
#define AST_CAUSE_FACILITY_NOT_SUBSCRIBED		50
#define AST_CAUSE_OUTGOING_CALL_BARRED			52
#define AST_CAUSE_INCOMING_CALL_BARRED			54
#define AST_CAUSE_BEARERCAPABILITY_NOTAUTH		57
#define AST_CAUSE_BEARERCAPABILITY_NOTAVAIL		58
#define AST_CAUSE_BEARERCAPABILITY_NOTIMPL		65
#define AST_CAUSE_CHAN_NOT_IMPLEMENTED			66
#define AST_CAUSE_FACILITY_NOT_IMPLEMENTED		69
#define AST_CAUSE_INVALID_CALL_REFERENCE		81
#define AST_CAUSE_INCOMPATIBLE_DESTINATION		88
#define AST_CAUSE_INVALID_MSG_UNSPECIFIED		95
#define AST_CAUSE_MANDATORY_IE_MISSING			96
#define AST_CAUSE_MESSAGE_TYPE_NONEXIST			97
#define AST_CAUSE_WRONG_MESSAGE				98
#define AST_CAUSE_IE_NONEXIST				99
#define AST_CAUSE_INVALID_IE_CONTENTS			100
#define AST_CAUSE_WRONG_CALL_STATE			101
#define AST_CAUSE_RECOVERY_ON_TIMER_EXPIRE		102
#define AST_CAUSE_MANDATORY_IE_LENGTH_ERROR		103
#define AST_CAUSE_PROTOCOL_ERROR			111
#define AST_CAUSE_INTERWORKING				127

#define IAX_AUTH_PLAINTEXT			(1 << 0)
#define IAX_AUTH_MD5				(1 << 1)
#define IAX_AUTH_RSA				(1 << 2)

#define IAX_META_TRUNK				1		/* Trunk meta-message */
#define IAX_META_VIDEO				2		/* Video frame */

#define IAX_DPSTATUS_EXISTS		(1 << 0)
#define IAX_DPSTATUS_CANEXIST		(1 << 1)
#define IAX_DPSTATUS_NONEXISTANT	(1 << 2)
#define IAX_DPSTATUS_IGNOREPAT		(1 << 14)
#define IAX_DPSTATUS_MATCHMORE		(1 << 15)

typedef enum {
  IAX2_MINI_VOICE_PACKET,
  IAX2_FULL_PACKET,
  IAX2_MINI_VIDEO_PACKET,
  IAX2_TRUNK_PACKET
} packet_type;

/* Container for tapping relevant data */
typedef struct _iax2_info_t
{
	packet_type ptype;
	guint16 scallno;
	guint16 dcallno;
	guint8 ftype;
	guint8 csub;
	guint32 timestamp;
	guint payload_len;
	voip_call_state callState;
	const gchar *messageName;
	const gchar *callingParty;
	const gchar *calledParty;
	const guint8 *payload_data;
} iax2_info_t;

/* Container for passing data between dissectors */
typedef struct _iax2_dissector_info_t
{
	conversation_type ctype;
	guint32 circuit_id;
} iax2_dissector_info_t;

#endif /* __PACKET_IAX2_H__ */