d9ac4bfc6f
https://origsvn.digium.com/svn/asterisk/branches/1.4 ........ r194557 | dvossel | 2009-05-14 17:59:43 -0500 (Thu, 14 May 2009) | 10 lines IAX2 "Ghost" Channels There is a bug tracker issue where people are reporting "Ghost" channels in their 'iax2 show channels' output. The confusion is caused by channels being listed as "(NONE)" with format "unknown". These are not channels of coarse. They are usually just pending registration or poke requests, but it is confusing output. To help make sense of this I have added two columns to 'iax2 show channels'. One shows the first message which started the transaction, and the second shows the last message sent by either side of the call. This helps diagnose why the entry exists and why it may not go away. (closes issue #14207) Reported by: clive18 Review: https://reviewboard.asterisk.org/r/246/ ........ r194685 | dvossel | 2009-05-15 10:40:37 -0500 (Fri, 15 May 2009) | 6 lines Update to previous IAX2 "Ghost" Channels patch. Fixed some comments made on reviewboard for the previous patch. (issue #14207) ........ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@194833 65c4cc65-6c06-0410-ace0-fbb531ad65f3
286 lines
11 KiB
C
286 lines
11 KiB
C
/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* Implementation of Inter-Asterisk eXchange
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*
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* Copyright (C) 2003, Digium
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*
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* Mark Spencer <markster@linux-support.net>
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License
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*/
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/*! \file
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* \brief
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*
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* Implementation of Inter-Asterisk eXchange, version 2
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* \ref iax2-parser.c
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* \ref iax2-parser.h
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* \ref chan_iax2.c
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*/
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#ifndef _IAX2_H
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#define _IAX2_H
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/* Max version of IAX protocol we support */
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#define IAX_PROTO_VERSION 2
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/* NOTE: IT IS CRITICAL THAT IAX_MAX_CALLS BE A POWER OF 2. */
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#if defined(LOW_MEMORY)
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#define IAX_MAX_CALLS 2048
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#else
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#define IAX_MAX_CALLS 32768
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#endif
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#define IAX_FLAG_FULL 0x8000
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#define IAX_FLAG_RETRANS 0x8000
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#define IAX_FLAG_SC_LOG 0x80
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#define IAX_MAX_SHIFT 0x1F
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#define IAX_WINDOW 64
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/*! Subclass for AST_FRAME_IAX */
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enum iax_frame_subclass {
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IAX_COMMAND_NEW = 1,
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IAX_COMMAND_PING = 2,
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IAX_COMMAND_PONG = 3,
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IAX_COMMAND_ACK = 4,
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IAX_COMMAND_HANGUP = 5,
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IAX_COMMAND_REJECT = 6,
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IAX_COMMAND_ACCEPT = 7,
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IAX_COMMAND_AUTHREQ = 8,
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IAX_COMMAND_AUTHREP = 9,
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IAX_COMMAND_INVAL = 10,
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IAX_COMMAND_LAGRQ = 11,
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IAX_COMMAND_LAGRP = 12,
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/*! Registration request */
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IAX_COMMAND_REGREQ = 13,
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/*! Registration authentication required */
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IAX_COMMAND_REGAUTH = 14,
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/*! Registration accepted */
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IAX_COMMAND_REGACK = 15,
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/*! Registration rejected */
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IAX_COMMAND_REGREJ = 16,
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/*! Force release of registration */
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IAX_COMMAND_REGREL = 17,
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/*! If we receive voice before valid first voice frame, send this */
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IAX_COMMAND_VNAK = 18,
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/*! Request status of a dialplan entry */
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IAX_COMMAND_DPREQ = 19,
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/*! Request status of a dialplan entry */
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IAX_COMMAND_DPREP = 20,
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/*! Request a dial on channel brought up TBD */
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IAX_COMMAND_DIAL = 21,
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/*! Transfer Request */
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IAX_COMMAND_TXREQ = 22,
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/*! Transfer Connect */
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IAX_COMMAND_TXCNT = 23,
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/*! Transfer Accepted */
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IAX_COMMAND_TXACC = 24,
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/*! Transfer ready */
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IAX_COMMAND_TXREADY = 25,
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/*! Transfer release */
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IAX_COMMAND_TXREL = 26,
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/*! Transfer reject */
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IAX_COMMAND_TXREJ = 27,
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/*! Stop audio/video transmission */
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IAX_COMMAND_QUELCH = 28,
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/*! Resume audio/video transmission */
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IAX_COMMAND_UNQUELCH = 29,
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/*! Like ping, but does not require an open connection */
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IAX_COMMAND_POKE = 30,
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/*! Paging description */
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IAX_COMMAND_PAGE = 31,
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/*! Stand-alone message waiting indicator */
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IAX_COMMAND_MWI = 32,
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/*! Unsupported message received */
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IAX_COMMAND_UNSUPPORT = 33,
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/*! Request remote transfer */
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IAX_COMMAND_TRANSFER = 34,
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/*! Provision device */
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IAX_COMMAND_PROVISION = 35,
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/*! Download firmware */
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IAX_COMMAND_FWDOWNL = 36,
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/*! Firmware Data */
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IAX_COMMAND_FWDATA = 37,
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/*! Transfer media only */
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IAX_COMMAND_TXMEDIA = 38,
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/*! Command to rotate key */
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IAX_COMMAND_RTKEY = 39,
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};
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/*! By default require re-registration once per minute */
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#define IAX_DEFAULT_REG_EXPIRE 60
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/*! How long to wait before closing bridged call */
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#define IAX_LINGER_TIMEOUT 10
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#define IAX_DEFAULT_PORTNO 4569
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/*! IAX Information elements */
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#define IAX_IE_CALLED_NUMBER 1 /*!< Number/extension being called - string */
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#define IAX_IE_CALLING_NUMBER 2 /*!< Calling number - string */
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#define IAX_IE_CALLING_ANI 3 /*!< Calling number ANI for billing - string */
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#define IAX_IE_CALLING_NAME 4 /*!< Name of caller - string */
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#define IAX_IE_CALLED_CONTEXT 5 /*!< Context for number - string */
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#define IAX_IE_USERNAME 6 /*!< Username (peer or user) for authentication - string */
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#define IAX_IE_PASSWORD 7 /*!< Password for authentication - string */
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#define IAX_IE_CAPABILITY 8 /*!< Actual codec capability - unsigned int */
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#define IAX_IE_FORMAT 9 /*!< Desired codec format - unsigned int */
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#define IAX_IE_LANGUAGE 10 /*!< Desired language - string */
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#define IAX_IE_VERSION 11 /*!< Protocol version - short */
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#define IAX_IE_ADSICPE 12 /*!< CPE ADSI capability - short */
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#define IAX_IE_DNID 13 /*!< Originally dialed DNID - string */
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#define IAX_IE_AUTHMETHODS 14 /*!< Authentication method(s) - short */
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#define IAX_IE_CHALLENGE 15 /*!< Challenge data for MD5/RSA - string */
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#define IAX_IE_MD5_RESULT 16 /*!< MD5 challenge result - string */
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#define IAX_IE_RSA_RESULT 17 /*!< RSA challenge result - string */
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#define IAX_IE_APPARENT_ADDR 18 /*!< Apparent address of peer - struct sockaddr_in */
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#define IAX_IE_REFRESH 19 /*!< When to refresh registration - short */
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#define IAX_IE_DPSTATUS 20 /*!< Dialplan status - short */
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#define IAX_IE_CALLNO 21 /*!< Call number of peer - short */
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#define IAX_IE_CAUSE 22 /*!< Cause - string */
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#define IAX_IE_IAX_UNKNOWN 23 /*!< Unknown IAX command - byte */
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#define IAX_IE_MSGCOUNT 24 /*!< How many messages waiting - short */
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#define IAX_IE_AUTOANSWER 25 /*!< Request auto-answering -- none */
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#define IAX_IE_MUSICONHOLD 26 /*!< Request musiconhold with QUELCH -- none or string */
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#define IAX_IE_TRANSFERID 27 /*!< Transfer Request Identifier -- int */
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#define IAX_IE_RDNIS 28 /*!< Referring DNIS -- string */
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#define IAX_IE_PROVISIONING 29 /*!< Provisioning info */
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#define IAX_IE_AESPROVISIONING 30 /*!< AES Provisioning info */
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#define IAX_IE_DATETIME 31 /*!< Date/Time */
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#define IAX_IE_DEVICETYPE 32 /*!< Device Type -- string */
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#define IAX_IE_SERVICEIDENT 33 /*!< Service Identifier -- string */
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#define IAX_IE_FIRMWAREVER 34 /*!< Firmware revision -- u16 */
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#define IAX_IE_FWBLOCKDESC 35 /*!< Firmware block description -- u32 */
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#define IAX_IE_FWBLOCKDATA 36 /*!< Firmware block of data -- raw */
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#define IAX_IE_PROVVER 37 /*!< Provisioning Version (u32) */
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#define IAX_IE_CALLINGPRES 38 /*!< Calling presentation (u8) */
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#define IAX_IE_CALLINGTON 39 /*!< Calling type of number (u8) */
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#define IAX_IE_CALLINGTNS 40 /*!< Calling transit network select (u16) */
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#define IAX_IE_SAMPLINGRATE 41 /*!< Supported sampling rates (u16) */
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#define IAX_IE_CAUSECODE 42 /*!< Hangup cause (u8) */
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#define IAX_IE_ENCRYPTION 43 /*!< Encryption format (u16) */
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#define IAX_IE_ENCKEY 44 /*!< Encryption key (raw) */
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#define IAX_IE_CODEC_PREFS 45 /*!< Codec Negotiation */
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#define IAX_IE_RR_JITTER 46 /*!< Received jitter (as in RFC1889) u32 */
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#define IAX_IE_RR_LOSS 47 /*!< Received loss (high byte loss pct, low 24 bits loss count, as in rfc1889 */
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#define IAX_IE_RR_PKTS 48 /*!< Received frames (total frames received) u32 */
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#define IAX_IE_RR_DELAY 49 /*!< Max playout delay for received frames (in ms) u16 */
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#define IAX_IE_RR_DROPPED 50 /*!< Dropped frames (presumably by jitterbuf) u32 */
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#define IAX_IE_RR_OOO 51 /*!< Frames received Out of Order u32 */
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#define IAX_IE_VARIABLE 52 /*!< Remote variables */
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#define IAX_IE_OSPTOKEN 53 /*!< OSP token */
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#define IAX_MAX_OSPBLOCK_SIZE 254 /*!< Max OSP token block size, 255 bytes - 1 byte OSP token block index */
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#define IAX_MAX_OSPBLOCK_NUM 4
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#define IAX_MAX_OSPTOKEN_SIZE (IAX_MAX_OSPBLOCK_SIZE * IAX_MAX_OSPBLOCK_NUM)
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#define IAX_MAX_OSPBUFF_SIZE (IAX_MAX_OSPTOKEN_SIZE + 16)
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#define IAX_AUTH_PLAINTEXT (1 << 0)
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#define IAX_AUTH_MD5 (1 << 1)
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#define IAX_AUTH_RSA (1 << 2)
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#define IAX_ENCRYPT_AES128 (1 << 0)
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#define IAX_ENCRYPT_KEYROTATE (1 << 15) /*!< Keyrotation support */
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#define IAX_META_TRUNK 1 /*!< Trunk meta-message */
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#define IAX_META_VIDEO 2 /*!< Video frame */
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#define IAX_META_TRUNK_SUPERMINI 0 /*!< This trunk frame contains classic supermini frames */
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#define IAX_META_TRUNK_MINI 1 /*!< This trunk frame contains trunked mini frames */
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#define IAX_RATE_8KHZ (1 << 0) /*!< 8khz sampling (default if absent) */
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#define IAX_RATE_11KHZ (1 << 1) /*!< 11.025khz sampling */
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#define IAX_RATE_16KHZ (1 << 2) /*!< 16khz sampling */
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#define IAX_RATE_22KHZ (1 << 3) /*!< 22.05khz sampling */
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#define IAX_RATE_44KHZ (1 << 4) /*!< 44.1khz sampling */
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#define IAX_RATE_48KHZ (1 << 5) /*!< 48khz sampling */
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#define IAX_DPSTATUS_EXISTS (1 << 0)
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#define IAX_DPSTATUS_CANEXIST (1 << 1)
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#define IAX_DPSTATUS_NONEXISTENT (1 << 2)
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#define IAX_DPSTATUS_IGNOREPAT (1 << 14)
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#define IAX_DPSTATUS_MATCHMORE (1 << 15)
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/*! Full frames are always delivered reliably */
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struct ast_iax2_full_hdr {
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unsigned short scallno; /*!< Source call number -- high bit must be 1 */
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unsigned short dcallno; /*!< Destination call number -- high bit is 1 if retransmission */
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unsigned int ts; /*!< 32-bit timestamp in milliseconds (from 1st transmission) */
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unsigned char oseqno; /*!< Packet number (outgoing) */
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unsigned char iseqno; /*!< Packet number (next incoming expected) */
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unsigned char type; /*!< Frame type */
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unsigned char csub; /*!< Compressed subclass */
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unsigned char iedata[0];
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} __attribute__ ((__packed__));
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/*! Full frames are always delivered reliably */
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struct ast_iax2_full_enc_hdr {
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unsigned short scallno; /*!< Source call number -- high bit must be 1 */
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unsigned short dcallno; /*!< Destination call number -- high bit is 1 if retransmission */
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unsigned char encdata[0];
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} __attribute__ ((__packed__));
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/*! Mini header is used only for voice frames -- delivered unreliably */
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struct ast_iax2_mini_hdr {
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unsigned short callno; /*!< Source call number -- high bit must be 0, rest must be non-zero */
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unsigned short ts; /*!< 16-bit Timestamp (high 16 bits from last ast_iax2_full_hdr) */
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/* Frametype implicitly VOICE_FRAME */
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/* subclass implicit from last ast_iax2_full_hdr */
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unsigned char data[0];
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} __attribute__ ((__packed__));
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/*! Mini header is used only for voice frames -- delivered unreliably */
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struct ast_iax2_mini_enc_hdr {
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unsigned short callno; /*!< Source call number -- high bit must be 0, rest must be non-zero */
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unsigned char encdata[0];
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} __attribute__ ((__packed__));
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struct ast_iax2_meta_hdr {
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unsigned short zeros; /*!< Zeros field -- must be zero */
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unsigned char metacmd; /*!< Meta command */
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unsigned char cmddata; /*!< Command Data */
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unsigned char data[0];
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} __attribute__ ((__packed__));
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struct ast_iax2_video_hdr {
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unsigned short zeros; /*!< Zeros field -- must be zero */
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unsigned short callno; /*!< Video call number */
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unsigned short ts; /*!< Timestamp and mark if present */
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unsigned char data[0];
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} __attribute__ ((__packed__));
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struct ast_iax2_meta_trunk_hdr {
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unsigned int ts; /*!< 32-bit timestamp for all messages */
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unsigned char data[0];
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} __attribute__ ((__packed__));
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struct ast_iax2_meta_trunk_entry {
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unsigned short callno; /*!< Call number */
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unsigned short len; /*!< Length of data for this callno */
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} __attribute__ ((__packed__));
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/*! When trunktimestamps are used, we use this format instead */
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struct ast_iax2_meta_trunk_mini {
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unsigned short len;
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struct ast_iax2_mini_hdr mini; /*!< this is an actual miniframe */
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} __attribute__ ((__packed__));
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#define IAX_FIRMWARE_MAGIC 0x69617879
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struct ast_iax2_firmware_header {
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unsigned int magic; /*!< Magic number */
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unsigned short version; /*!< Software version */
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unsigned char devname[16]; /*!< Device */
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unsigned int datalen; /*!< Data length of file beyond header */
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unsigned char chksum[16]; /*!< Checksum of all data */
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unsigned char data[0];
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} __attribute__ ((__packed__));
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#endif
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