2 * Asterisk -- An open source telephony toolkit.
4 * Copyright (C) 1999 - 2006, Digium, Inc.
6 * Mark Spencer <markster@digium.com>
8 * See http://www.asterisk.org for more information about
9 * the Asterisk project. Please do not directly contact
10 * any of the maintainers of this project for assistance;
11 * the project provides a web site, mailing lists and IRC
12 * channels for your use.
14 * This program is free software, distributed under the terms of
15 * the GNU General Public License Version 2. See the LICENSE file
16 * at the top of the source tree.
21 * \brief Implementation of Inter-Asterisk eXchange Version 2
23 * \author Mark Spencer <markster@digium.com>
26 * \arg \ref Config_iax
28 * \ingroup channel_drivers
30 * \todo Implement musicclass settings for IAX2 devices
39 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
43 #include <sys/socket.h>
44 #include <netinet/in.h>
45 #include <arpa/inet.h>
46 #include <netinet/in_systm.h>
47 #include <netinet/ip.h>
49 #include <sys/signal.h>
57 #include "asterisk/paths.h" /* need ast_config_AST_DATA_DIR for firmware */
59 #include "asterisk/lock.h"
60 #include "asterisk/frame.h"
61 #include "asterisk/channel.h"
62 #include "asterisk/module.h"
63 #include "asterisk/pbx.h"
64 #include "asterisk/sched.h"
65 #include "asterisk/io.h"
66 #include "asterisk/config.h"
67 #include "asterisk/cli.h"
68 #include "asterisk/translate.h"
69 #include "asterisk/md5.h"
70 #include "asterisk/cdr.h"
71 #include "asterisk/crypto.h"
72 #include "asterisk/acl.h"
73 #include "asterisk/manager.h"
74 #include "asterisk/callerid.h"
75 #include "asterisk/app.h"
76 #include "asterisk/astdb.h"
77 #include "asterisk/musiconhold.h"
78 #include "asterisk/features.h"
79 #include "asterisk/utils.h"
80 #include "asterisk/causes.h"
81 #include "asterisk/localtime.h"
82 #include "asterisk/aes.h"
83 #include "asterisk/dnsmgr.h"
84 #include "asterisk/devicestate.h"
85 #include "asterisk/netsock.h"
86 #include "asterisk/stringfields.h"
87 #include "asterisk/linkedlists.h"
88 #include "asterisk/event.h"
89 #include "asterisk/astobj2.h"
90 #include "asterisk/timing.h"
93 #include "iax2-parser.h"
94 #include "iax2-provision.h"
95 #include "jitterbuf.h"
98 <application name="IAX2Provision" language="en_US">
100 Provision a calling IAXy with a given template.
103 <parameter name="template">
104 <para>If not specified, defaults to <literal>default</literal>.</para>
108 <para>Provisions the calling IAXy (assuming the calling entity is in fact an IAXy) with the
109 given <replaceable>template</replaceable>. Returns <literal>-1</literal> on error
110 or <literal>0</literal> on success.</para>
113 <function name="IAXPEER" language="en_US">
115 Gets IAX peer information.
118 <parameter name="peername" required="true">
120 <enum name="CURRENTCHANNEL">
121 <para>If <replaceable>peername</replaceable> is specified to this value, return the IP address of the
122 endpoint of the current channel</para>
126 <parameter name="item">
127 <para>If <replaceable>peername</replaceable> is specified, valid items are:</para>
130 <para>(default) The IP address.</para>
133 <para>The peer's status (if <literal>qualify=yes</literal>)</para>
135 <enum name="mailbox">
136 <para>The configured mailbox.</para>
138 <enum name="context">
139 <para>The configured context.</para>
142 <para>The epoch time of the next expire.</para>
144 <enum name="dynamic">
145 <para>Is it dynamic? (yes/no).</para>
147 <enum name="callerid_name">
148 <para>The configured Caller ID name.</para>
150 <enum name="callerid_num">
151 <para>The configured Caller ID number.</para>
154 <para>The configured codecs.</para>
156 <enum name="codec[x]">
157 <para>Preferred codec index number <replaceable>x</replaceable> (beginning
158 with <literal>0</literal>)</para>
165 <ref type="function">SIPPEER</ref>
168 <function name="IAXVAR" language="en_US">
170 Sets or retrieves a remote variable.
173 <parameter name="varname" required="true" />
179 /* Define SCHED_MULTITHREADED to run the scheduler in a special
180 multithreaded mode. */
181 #define SCHED_MULTITHREADED
183 /* Define DEBUG_SCHED_MULTITHREADED to keep track of where each
184 thread is actually doing. */
185 #define DEBUG_SCHED_MULTITHREAD
189 static int nochecksums = 0;
192 #define PTR_TO_CALLNO(a) ((unsigned short)(unsigned long)(a))
193 #define CALLNO_TO_PTR(a) ((void *)(unsigned long)(a))
195 #define DEFAULT_THREAD_COUNT 10
196 #define DEFAULT_MAX_THREAD_COUNT 100
197 #define DEFAULT_RETRY_TIME 1000
198 #define MEMORY_SIZE 100
199 #define DEFAULT_DROP 3
201 #define DEBUG_SUPPORT
203 #define MIN_REUSE_TIME 60 /* Don't reuse a call number within 60 seconds */
205 /* Sample over last 100 units to determine historic jitter */
208 static struct ast_codec_pref prefs;
210 static const char tdesc[] = "Inter Asterisk eXchange Driver (Ver 2)";
213 /*! \brief Maximum transmission unit for the UDP packet in the trunk not to be
214 fragmented. This is based on 1516 - ethernet - ip - udp - iax minus one g711 frame = 1240 */
215 #define MAX_TRUNK_MTU 1240
217 static int global_max_trunk_mtu; /*!< Maximum MTU, 0 if not used */
218 static int trunk_timed, trunk_untimed, trunk_maxmtu, trunk_nmaxmtu ; /*!< Trunk MTU statistics */
220 #define DEFAULT_CONTEXT "default"
222 static char default_parkinglot[AST_MAX_CONTEXT];
224 static char language[MAX_LANGUAGE] = "";
225 static char regcontext[AST_MAX_CONTEXT] = "";
227 static int maxauthreq = 3;
228 static int max_retries = 4;
229 static int ping_time = 21;
230 static int lagrq_time = 10;
231 static int maxjitterbuffer=1000;
232 static int resyncthreshold=1000;
233 static int maxjitterinterps=10;
234 static int jittertargetextra = 40; /* number of milliseconds the new jitter buffer adds on to its size */
236 #define MAX_TRUNKDATA 640 * 200 /*!< 40ms, uncompressed linear * 200 channels */
238 static int trunkfreq = 20;
239 static int trunkmaxsize = MAX_TRUNKDATA;
241 static int authdebug = 1;
242 static int autokill = 0;
243 static int iaxcompat = 0;
244 static int last_authmethod = 0;
246 static int iaxdefaultdpcache=10 * 60; /* Cache dialplan entries for 10 minutes by default */
248 static int iaxdefaulttimeout = 5; /* Default to wait no more than 5 seconds for a reply to come back */
255 static int min_reg_expire;
256 static int max_reg_expire;
258 static int srvlookup = 0;
260 static int timingfd = -1; /* Timing file descriptor */
262 static struct ast_netsock_list *netsock;
263 static struct ast_netsock_list *outsock; /*!< used if sourceaddress specified and bindaddr == INADDR_ANY */
264 static int defaultsockfd = -1;
266 int (*iax2_regfunk)(const char *username, int onoff) = NULL;
269 #define IAX_CAPABILITY_FULLBANDWIDTH 0xFFFF
271 #define IAX_CAPABILITY_MEDBANDWIDTH (IAX_CAPABILITY_FULLBANDWIDTH & \
272 ~AST_FORMAT_SLINEAR & \
277 #define IAX_CAPABILITY_LOWBANDWIDTH (IAX_CAPABILITY_MEDBANDWIDTH & \
279 ~AST_FORMAT_G726_AAL2 & \
282 #define IAX_CAPABILITY_LOWFREE (IAX_CAPABILITY_LOWBANDWIDTH & \
286 #define DEFAULT_MAXMS 2000 /* Must be faster than 2 seconds by default */
287 #define DEFAULT_FREQ_OK 60 * 1000 /* How often to check for the host to be up */
288 #define DEFAULT_FREQ_NOTOK 10 * 1000 /* How often to check, if the host is down... */
290 /* if a pvt has encryption setup done and is running on the call */
291 #define IAX_CALLENCRYPTED(pvt) \
292 (ast_test_flag(pvt, IAX_ENCRYPTED) && ast_test_flag(pvt, IAX_KEYPOPULATED))
294 #define IAX_DEBUGDIGEST(msg, key) do { \
296 char digest[33] = ""; \
301 for (idx = 0; idx < 16; idx++) \
302 sprintf(digest + (idx << 1), "%2.2x", (unsigned char) key[idx]); \
304 ast_log(LOG_NOTICE, msg " IAX_COMMAND_RTKEY to rotate key to '%s'\n", digest); \
307 static struct io_context *io;
308 static struct ast_sched_thread *sched;
310 static int iax2_capability = IAX_CAPABILITY_FULLBANDWIDTH;
312 static int iaxdebug = 0;
314 static int iaxtrunkdebug = 0;
316 static int test_losspct = 0;
318 static int test_late = 0;
319 static int test_resync = 0;
320 static int test_jit = 0;
321 static int test_jitpct = 0;
322 #endif /* IAXTESTS */
324 static char accountcode[AST_MAX_ACCOUNT_CODE];
325 static char mohinterpret[MAX_MUSICCLASS];
326 static char mohsuggest[MAX_MUSICCLASS];
327 static int amaflags = 0;
329 static int delayreject = 0;
330 static int iax2_encryption = 0;
332 static struct ast_flags globalflags = { 0 };
334 static pthread_t netthreadid = AST_PTHREADT_NULL;
337 IAX_STATE_STARTED = (1 << 0),
338 IAX_STATE_AUTHENTICATED = (1 << 1),
339 IAX_STATE_TBD = (1 << 2),
340 IAX_STATE_UNCHANGED = (1 << 3),
343 struct iax2_context {
344 char context[AST_MAX_CONTEXT];
345 struct iax2_context *next;
349 IAX_HASCALLERID = (1 << 0), /*!< CallerID has been specified */
350 IAX_DELME = (1 << 1), /*!< Needs to be deleted */
351 IAX_TEMPONLY = (1 << 2), /*!< Temporary (realtime) */
352 IAX_TRUNK = (1 << 3), /*!< Treat as a trunk */
353 IAX_NOTRANSFER = (1 << 4), /*!< Don't native bridge */
354 IAX_USEJITTERBUF = (1 << 5), /*!< Use jitter buffer */
355 IAX_DYNAMIC = (1 << 6), /*!< dynamic peer */
356 IAX_SENDANI = (1 << 7), /*!< Send ANI along with CallerID */
357 /* (1 << 8) is currently unused due to the deprecation of an old option. Go ahead, take it! */
358 IAX_ALREADYGONE = (1 << 9), /*!< Already disconnected */
359 IAX_PROVISION = (1 << 10), /*!< This is a provisioning request */
360 IAX_QUELCH = (1 << 11), /*!< Whether or not we quelch audio */
361 IAX_ENCRYPTED = (1 << 12), /*!< Whether we should assume encrypted tx/rx */
362 IAX_KEYPOPULATED = (1 << 13), /*!< Whether we have a key populated */
363 IAX_CODEC_USER_FIRST = (1 << 14), /*!< are we willing to let the other guy choose the codec? */
364 IAX_CODEC_NOPREFS = (1 << 15), /*!< Force old behaviour by turning off prefs */
365 IAX_CODEC_NOCAP = (1 << 16), /*!< only consider requested format and ignore capabilities*/
366 IAX_RTCACHEFRIENDS = (1 << 17), /*!< let realtime stay till your reload */
367 IAX_RTUPDATE = (1 << 18), /*!< Send a realtime update */
368 IAX_RTAUTOCLEAR = (1 << 19), /*!< erase me on expire */
369 IAX_FORCEJITTERBUF = (1 << 20), /*!< Force jitterbuffer, even when bridged to a channel that can take jitter */
370 IAX_RTIGNOREREGEXPIRE = (1 << 21), /*!< When using realtime, ignore registration expiration */
371 IAX_TRUNKTIMESTAMPS = (1 << 22), /*!< Send trunk timestamps */
372 IAX_TRANSFERMEDIA = (1 << 23), /*!< When doing IAX2 transfers, transfer media only */
373 IAX_MAXAUTHREQ = (1 << 24), /*!< Maximum outstanding AUTHREQ restriction is in place */
374 IAX_DELAYPBXSTART = (1 << 25), /*!< Don't start a PBX on the channel until the peer sends us a
375 response, so that we've achieved a three-way handshake with
376 them before sending voice or anything else*/
377 IAX_ALLOWFWDOWNLOAD = (1 << 26), /*!< Allow the FWDOWNL command? */
378 IAX_NOKEYROTATE = (1 << 27), /*!< Disable key rotation with encryption */
379 IAX_IMMEDIATE = (1 << 28), /*!< Allow immediate off-hook to extension s */
380 IAX_FORCE_ENCRYPT = (1 << 29), /*!< Forces call encryption, if encryption not possible hangup */
383 static int global_rtautoclear = 120;
385 static int reload_config(void);
388 AST_DECLARE_STRING_FIELDS(
389 AST_STRING_FIELD(name);
390 AST_STRING_FIELD(secret);
391 AST_STRING_FIELD(dbsecret);
392 AST_STRING_FIELD(accountcode);
393 AST_STRING_FIELD(mohinterpret);
394 AST_STRING_FIELD(mohsuggest);
395 AST_STRING_FIELD(inkeys); /*!< Key(s) this user can use to authenticate to us */
396 AST_STRING_FIELD(language);
397 AST_STRING_FIELD(cid_num);
398 AST_STRING_FIELD(cid_name);
399 AST_STRING_FIELD(parkinglot); /*!< Default parkinglot for device */
408 int maxauthreq; /*!< Maximum allowed outstanding AUTHREQs */
409 int curauthreq; /*!< Current number of outstanding AUTHREQs */
410 struct ast_codec_pref prefs;
412 struct iax2_context *contexts;
413 struct ast_variable *vars;
417 AST_DECLARE_STRING_FIELDS(
418 AST_STRING_FIELD(name);
419 AST_STRING_FIELD(username);
420 AST_STRING_FIELD(secret);
421 AST_STRING_FIELD(dbsecret);
422 AST_STRING_FIELD(outkey); /*!< What key we use to talk to this peer */
424 AST_STRING_FIELD(regexten); /*!< Extension to register (if regcontext is used) */
425 AST_STRING_FIELD(context); /*!< For transfers only */
426 AST_STRING_FIELD(peercontext); /*!< Context to pass to peer */
427 AST_STRING_FIELD(mailbox); /*!< Mailbox */
428 AST_STRING_FIELD(mohinterpret);
429 AST_STRING_FIELD(mohsuggest);
430 AST_STRING_FIELD(inkeys); /*!< Key(s) this peer can use to authenticate to us */
431 /* Suggested caller id if registering */
432 AST_STRING_FIELD(cid_num); /*!< Default context (for transfer really) */
433 AST_STRING_FIELD(cid_name); /*!< Default context (for transfer really) */
434 AST_STRING_FIELD(zonetag); /*!< Time Zone */
435 AST_STRING_FIELD(parkinglot); /*!< Default parkinglot for device */
437 struct ast_codec_pref prefs;
438 struct ast_dnsmgr_entry *dnsmgr; /*!< DNS refresh manager */
439 struct sockaddr_in addr;
441 int sockfd; /*!< Socket to use for transmission */
446 /* Dynamic Registration fields */
447 struct sockaddr_in defaddr; /*!< Default address if there is one */
448 int authmethods; /*!< Authentication methods (IAX_AUTH_*) */
449 int encmethods; /*!< Encryption methods (IAX_ENCRYPT_*) */
451 int expire; /*!< Schedule entry for expiry */
452 int expiry; /*!< How soon to expire */
453 int capability; /*!< Capability */
456 int callno; /*!< Call number of POKE request */
457 int pokeexpire; /*!< Scheduled qualification-related task (ie iax2_poke_peer_s or iax2_poke_noanswer) */
458 int lastms; /*!< How long last response took (in ms), or -1 for no response */
459 int maxms; /*!< Max ms we will accept for the host to be up, 0 to not monitor */
461 int pokefreqok; /*!< How often to check if the host is up */
462 int pokefreqnotok; /*!< How often to check when the host has been determined to be down */
463 int historicms; /*!< How long recent average responses took */
464 int smoothing; /*!< Sample over how many units to determine historic ms */
466 struct ast_event_sub *mwi_event_sub;
471 #define IAX2_TRUNK_PREFACE (sizeof(struct iax_frame) + sizeof(struct ast_iax2_meta_hdr) + sizeof(struct ast_iax2_meta_trunk_hdr))
473 struct iax2_trunk_peer {
476 struct sockaddr_in addr;
477 struct timeval txtrunktime; /*!< Transmit trunktime */
478 struct timeval rxtrunktime; /*!< Receive trunktime */
479 struct timeval lasttxtime; /*!< Last transmitted trunktime */
480 struct timeval trunkact; /*!< Last trunk activity */
481 unsigned int lastsent; /*!< Last sent time */
482 /* Trunk data and length */
483 unsigned char *trunkdata;
484 unsigned int trunkdatalen;
485 unsigned int trunkdataalloc;
489 AST_LIST_ENTRY(iax2_trunk_peer) list;
492 static AST_LIST_HEAD_STATIC(tpeers, iax2_trunk_peer);
494 struct iax_firmware {
495 AST_LIST_ENTRY(iax_firmware) list;
499 struct ast_iax2_firmware_header *fwh;
504 REG_STATE_UNREGISTERED = 0,
507 REG_STATE_REGISTERED,
513 enum iax_transfer_state {
518 TRANSFER_PASSTHROUGH,
522 TRANSFER_MPASSTHROUGH,
527 struct iax2_registry {
528 struct sockaddr_in addr; /*!< Who we connect to for registration purposes */
530 char secret[80]; /*!< Password or key name in []'s */
531 int expire; /*!< Sched ID of expiration */
532 int refresh; /*!< How often to refresh */
533 enum iax_reg_state regstate;
534 int messages; /*!< Message count, low 8 bits = new, high 8 bits = old */
535 int callno; /*!< Associated call number if applicable */
536 struct sockaddr_in us; /*!< Who the server thinks we are */
537 struct ast_dnsmgr_entry *dnsmgr; /*!< DNS refresh manager */
538 AST_LIST_ENTRY(iax2_registry) entry;
541 static AST_LIST_HEAD_STATIC(registrations, iax2_registry);
543 /* Don't retry more frequently than every 10 ms, or less frequently than every 5 seconds */
544 #define MIN_RETRY_TIME 100
545 #define MAX_RETRY_TIME 10000
547 #define MAX_JITTER_BUFFER 50
548 #define MIN_JITTER_BUFFER 10
550 #define DEFAULT_TRUNKDATA 640 * 10 /*!< 40ms, uncompressed linear * 10 channels */
552 #define MAX_TIMESTAMP_SKEW 160 /*!< maximum difference between actual and predicted ts for sending */
554 /* If consecutive voice frame timestamps jump by more than this many milliseconds, then jitter buffer will resync */
555 #define TS_GAP_FOR_JB_RESYNC 5000
557 static int iaxthreadcount = DEFAULT_THREAD_COUNT;
558 static int iaxmaxthreadcount = DEFAULT_MAX_THREAD_COUNT;
559 static int iaxdynamicthreadcount = 0;
560 static int iaxdynamicthreadnum = 0;
561 static int iaxactivethreadcount = 0;
575 struct chan_iax2_pvt {
576 /*! Socket to send/receive on for this call */
578 /*! Last received voice format */
580 /*! Last received video format */
582 /*! Last sent voice format */
584 /*! Last sent video format */
586 /*! What we are capable of sending */
588 /*! Last received timestamp */
590 /*! Last sent timestamp - never send the same timestamp twice in a single call */
591 unsigned int lastsent;
592 /*! Timestamp of the last video frame sent */
593 unsigned int lastvsent;
594 /*! Next outgoing timestamp if everything is good */
595 unsigned int nextpred;
596 /*! True if the last voice we transmitted was not silence/CNG */
597 unsigned int notsilenttx:1;
599 unsigned int pingtime;
600 /*! Max time for initial response */
603 struct sockaddr_in addr;
604 /*! Actual used codec preferences */
605 struct ast_codec_pref prefs;
606 /*! Requested codec preferences */
607 struct ast_codec_pref rprefs;
608 /*! Our call number */
609 unsigned short callno;
611 unsigned short peercallno;
612 /*! Negotiated format, this is only used to remember what format was
613 chosen for an unauthenticated call so that the channel can get
614 created later using the right format */
616 /*! Peer selected format */
618 /*! Peer capability */
620 /*! timeval that we base our transmission on */
621 struct timeval offset;
622 /*! timeval that we base our delivery on */
623 struct timeval rxcore;
624 /*! The jitterbuffer */
626 /*! active jb read scheduler id */
630 /*! Error, as discovered by the manager */
632 /*! Owner if we have one */
633 struct ast_channel *owner;
634 /*! What's our state? */
635 struct ast_flags state;
636 /*! Expiry (optional) */
638 /*! Next outgoing sequence number */
639 unsigned char oseqno;
640 /*! Next sequence number they have not yet acknowledged */
641 unsigned char rseqno;
642 /*! Next incoming sequence number */
643 unsigned char iseqno;
644 /*! Last incoming sequence number we have acknowledged */
645 unsigned char aseqno;
647 AST_DECLARE_STRING_FIELDS(
649 AST_STRING_FIELD(peer);
650 /*! Default Context */
651 AST_STRING_FIELD(context);
652 /*! Caller ID if available */
653 AST_STRING_FIELD(cid_num);
654 AST_STRING_FIELD(cid_name);
655 /*! Hidden Caller ID (i.e. ANI) if appropriate */
656 AST_STRING_FIELD(ani);
658 AST_STRING_FIELD(dnid);
660 AST_STRING_FIELD(rdnis);
661 /*! Requested Extension */
662 AST_STRING_FIELD(exten);
663 /*! Expected Username */
664 AST_STRING_FIELD(username);
665 /*! Expected Secret */
666 AST_STRING_FIELD(secret);
668 AST_STRING_FIELD(challenge);
669 /*! Public keys permitted keys for incoming authentication */
670 AST_STRING_FIELD(inkeys);
671 /*! Private key for outgoing authentication */
672 AST_STRING_FIELD(outkey);
673 /*! Preferred language */
674 AST_STRING_FIELD(language);
675 /*! Hostname/peername for naming purposes */
676 AST_STRING_FIELD(host);
678 AST_STRING_FIELD(dproot);
679 AST_STRING_FIELD(accountcode);
680 AST_STRING_FIELD(mohinterpret);
681 AST_STRING_FIELD(mohsuggest);
682 /*! received OSP token */
683 AST_STRING_FIELD(osptoken);
684 /*! Default parkinglot */
685 AST_STRING_FIELD(parkinglot);
688 /*! permitted authentication methods */
690 /*! permitted encryption methods */
692 /*! Encryption AES-128 Key */
693 ast_aes_encrypt_key ecx;
694 /*! Decryption AES-128 Key */
695 ast_aes_decrypt_key dcx;
696 /*! scheduler id associated with iax_key_rotate
697 * for encrypted calls*/
699 /*! 32 bytes of semi-random data */
700 unsigned char semirand[32];
701 /*! Associated registry */
702 struct iax2_registry *reg;
703 /*! Associated peer for poking */
704 struct iax2_peer *peerpoke;
709 /*! Transferring status */
710 enum iax_transfer_state transferring;
711 /*! Transfer identifier */
713 /*! Who we are IAX transferring to */
714 struct sockaddr_in transfer;
715 /*! What's the new call number for the transfer */
716 unsigned short transfercallno;
717 /*! Transfer encrypt AES-128 Key */
718 ast_aes_encrypt_key tdcx;
720 /*! Status of knowledge of peer ADSI capability */
723 /*! Who we are bridged to */
724 unsigned short bridgecallno;
726 int pingid; /*!< Transmit PING request */
727 int lagid; /*!< Retransmit lag request */
728 int autoid; /*!< Auto hangup for Dialplan requestor */
729 int authid; /*!< Authentication rejection ID */
730 int authfail; /*!< Reason to report failure */
731 int initid; /*!< Initial peer auto-congest ID (based on qualified peers) */
736 AST_LIST_HEAD_NOLOCK(, iax2_dpcache) dpentries;
737 /*! variables inherited from the user definition */
738 struct ast_variable *vars;
739 /*! variables transmitted in a NEW packet */
740 struct ast_variable *iaxvars;
741 /*! last received remote rr */
742 struct iax_rr remote_rr;
743 /*! Current base time: (just for stats) */
745 /*! Dropped frame count: (just for stats) */
747 /*! received frame count: (just for stats) */
752 * \brief a list of frames that may need to be retransmitted
754 * \note The contents of this list do not need to be explicitly destroyed
755 * on module unload. This is because all active calls are destroyed, and
756 * all frames in this queue will get destroyed as a part of that process.
758 static AST_LIST_HEAD_STATIC(frame_queue, iax_frame);
761 * This module will get much higher performance when doing a lot of
762 * user and peer lookups if the number of buckets is increased from 1.
763 * However, to maintain old behavior for Asterisk 1.4, these are set to
764 * 1 by default. When using multiple buckets, search order through these
765 * containers is considered random, so you will not be able to depend on
766 * the order the entires are specified in iax.conf for matching order. */
768 #define MAX_PEER_BUCKETS 17
770 #define MAX_PEER_BUCKETS 563
772 static struct ao2_container *peers;
774 #define MAX_USER_BUCKETS MAX_PEER_BUCKETS
775 static struct ao2_container *users;
777 static AST_LIST_HEAD_STATIC(firmwares, iax_firmware);
780 /*! Extension exists */
781 CACHE_FLAG_EXISTS = (1 << 0),
782 /*! Extension is nonexistent */
783 CACHE_FLAG_NONEXISTENT = (1 << 1),
784 /*! Extension can exist */
785 CACHE_FLAG_CANEXIST = (1 << 2),
786 /*! Waiting to hear back response */
787 CACHE_FLAG_PENDING = (1 << 3),
789 CACHE_FLAG_TIMEOUT = (1 << 4),
790 /*! Request transmitted */
791 CACHE_FLAG_TRANSMITTED = (1 << 5),
793 CACHE_FLAG_UNKNOWN = (1 << 6),
795 CACHE_FLAG_MATCHMORE = (1 << 7),
798 struct iax2_dpcache {
799 char peercontext[AST_MAX_CONTEXT];
800 char exten[AST_MAX_EXTENSION];
802 struct timeval expiry;
804 unsigned short callno;
806 AST_LIST_ENTRY(iax2_dpcache) cache_list;
807 AST_LIST_ENTRY(iax2_dpcache) peer_list;
810 static AST_LIST_HEAD_STATIC(dpcache, iax2_dpcache);
812 static void reg_source_db(struct iax2_peer *p);
813 static struct iax2_peer *realtime_peer(const char *peername, struct sockaddr_in *sin);
815 static int ast_cli_netstats(struct mansession *s, int fd, int limit_fmt);
816 static char *complete_iax2_peers(const char *line, const char *word, int pos, int state, int flags);
817 static char *complete_iax2_unregister(const char *line, const char *word, int pos, int state);
819 enum iax2_thread_iostate {
822 IAX_IOSTATE_PROCESSING,
823 IAX_IOSTATE_SCHEDREADY,
826 enum iax2_thread_type {
827 IAX_THREAD_TYPE_POOL,
828 IAX_THREAD_TYPE_DYNAMIC,
831 struct iax2_pkt_buf {
832 AST_LIST_ENTRY(iax2_pkt_buf) entry;
834 unsigned char buf[1];
838 AST_LIST_ENTRY(iax2_thread) list;
839 enum iax2_thread_type type;
840 enum iax2_thread_iostate iostate;
841 #ifdef SCHED_MULTITHREADED
842 void (*schedfunc)(const void *);
843 const void *scheddata;
845 #ifdef DEBUG_SCHED_MULTITHREAD
851 struct sockaddr_in iosin;
852 unsigned char readbuf[4096];
860 ast_mutex_t init_lock;
861 ast_cond_t init_cond;
862 /*! if this thread is processing a full frame,
863 some information about that frame will be stored
864 here, so we can avoid dispatching any more full
865 frames for that callno to other threads */
867 unsigned short callno;
868 struct sockaddr_in sin;
872 /*! Queued up full frames for processing. If more full frames arrive for
873 * a call which this thread is already processing a full frame for, they
874 * are queued up here. */
875 AST_LIST_HEAD_NOLOCK(, iax2_pkt_buf) full_frames;
879 static AST_LIST_HEAD_STATIC(idle_list, iax2_thread);
880 static AST_LIST_HEAD_STATIC(active_list, iax2_thread);
881 static AST_LIST_HEAD_STATIC(dynamic_list, iax2_thread);
883 static void *iax2_process_thread(void *data);
884 static void iax2_destroy(int callno);
886 static void signal_condition(ast_mutex_t *lock, ast_cond_t *cond)
888 ast_mutex_lock(lock);
889 ast_cond_signal(cond);
890 ast_mutex_unlock(lock);
894 * \brief an array of iax2 pvt structures
896 * The container for active chan_iax2_pvt structures is implemented as an
897 * array for extremely quick direct access to the correct pvt structure
898 * based on the local call number. The local call number is used as the
899 * index into the array where the associated pvt structure is stored.
901 static struct chan_iax2_pvt *iaxs[IAX_MAX_CALLS];
904 * \brief Another container of iax2_pvt structures
906 * Active IAX2 pvt structs are also stored in this container, if they are a part
907 * of an active call where we know the remote side's call number. The reason
908 * for this is that incoming media frames do not contain our call number. So,
909 * instead of having to iterate the entire iaxs array, we use this container to
910 * look up calls where the remote side is using a given call number.
912 static struct ao2_container *iax_peercallno_pvts;
915 * \brief chan_iax2_pvt structure locks
917 * These locks are used when accessing a pvt structure in the iaxs array.
918 * The index used here is the same as used in the iaxs array. It is the
919 * local call number for the associated pvt struct.
921 static ast_mutex_t iaxsl[ARRAY_LEN(iaxs)];
924 * \brief The last time a call number was used
926 * It is important to know the last time that a call number was used locally so
927 * that it is not used again too soon. The reason for this is the same as the
928 * reason that the TCP protocol state machine requires a "TIME WAIT" state.
930 * For example, say that a call is up. Then, the remote side sends a HANGUP,
931 * which we respond to with an ACK. However, there is no way to know whether
932 * the ACK made it there successfully. If it were to get lost, the remote
933 * side may retransmit the HANGUP. If in the meantime, this call number has
934 * been reused locally, given the right set of circumstances, this retransmitted
935 * HANGUP could potentially improperly hang up the new session. So, to avoid
936 * this potential issue, we must wait a specified timeout period before reusing
937 * a local call number.
939 * The specified time that we must wait before reusing a local call number is
940 * defined as MIN_REUSE_TIME, with a default of 60 seconds.
942 static struct timeval lastused[ARRAY_LEN(iaxs)];
945 * * \brief Another container of iax2_pvt structures
947 * Active IAX2 pvt stucts used during transfering a call are stored here.
949 static struct ao2_container *iax_transfercallno_pvts;
951 /* Flag to use with trunk calls, keeping these calls high up. It halves our effective use
952 but keeps the division between trunked and non-trunked better. */
953 #define TRUNK_CALL_START ARRAY_LEN(iaxs) / 2
955 /* Debug routines... */
956 static struct sockaddr_in debugaddr;
958 static void iax_outputframe(struct iax_frame *f, struct ast_iax2_full_hdr *fhi, int rx, struct sockaddr_in *sin, int datalen)
961 (sin && debugaddr.sin_addr.s_addr &&
962 (!ntohs(debugaddr.sin_port) ||
963 debugaddr.sin_port == sin->sin_port) &&
964 debugaddr.sin_addr.s_addr == sin->sin_addr.s_addr)) {
966 iax_showframe(f, fhi, rx, sin, datalen);
969 iax_showframe(f, fhi, rx, sin, datalen);
975 static void iax_debug_output(const char *data)
978 ast_verbose("%s", data);
981 static void iax_error_output(const char *data)
983 ast_log(LOG_WARNING, "%s", data);
986 static void __attribute__((format(printf, 1, 2))) jb_error_output(const char *fmt, ...)
992 vsnprintf(buf, sizeof(buf), fmt, args);
995 ast_log(LOG_ERROR, "%s", buf);
998 static void __attribute__((format(printf, 1, 2))) jb_warning_output(const char *fmt, ...)
1003 va_start(args, fmt);
1004 vsnprintf(buf, sizeof(buf), fmt, args);
1007 ast_log(LOG_WARNING, "%s", buf);
1010 static void __attribute__((format(printf, 1, 2))) jb_debug_output(const char *fmt, ...)
1015 va_start(args, fmt);
1016 vsnprintf(buf, sizeof(buf), fmt, args);
1019 ast_verbose("%s", buf);
1022 static int maxtrunkcall = TRUNK_CALL_START;
1023 static int maxnontrunkcall = 1;
1025 static enum ast_bridge_result iax2_bridge(struct ast_channel *c0, struct ast_channel *c1, int flags, struct ast_frame **fo, struct ast_channel **rc, int timeoutms);
1026 static int expire_registry(const void *data);
1027 static int iax2_answer(struct ast_channel *c);
1028 static int iax2_call(struct ast_channel *c, char *dest, int timeout);
1029 static int iax2_devicestate(void *data);
1030 static int iax2_digit_begin(struct ast_channel *c, char digit);
1031 static int iax2_digit_end(struct ast_channel *c, char digit, unsigned int duration);
1032 static int iax2_do_register(struct iax2_registry *reg);
1033 static int iax2_fixup(struct ast_channel *oldchannel, struct ast_channel *newchan);
1034 static int iax2_hangup(struct ast_channel *c);
1035 static int iax2_indicate(struct ast_channel *c, int condition, const void *data, size_t datalen);
1036 static int iax2_poke_peer(struct iax2_peer *peer, int heldcall);
1037 static int iax2_provision(struct sockaddr_in *end, int sockfd, char *dest, const char *template, int force);
1038 static int iax2_send(struct chan_iax2_pvt *pvt, struct ast_frame *f, unsigned int ts, int seqno, int now, int transfer, int final);
1039 static int iax2_sendhtml(struct ast_channel *c, int subclass, const char *data, int datalen);
1040 static int iax2_sendimage(struct ast_channel *c, struct ast_frame *img);
1041 static int iax2_sendtext(struct ast_channel *c, const char *text);
1042 static int iax2_setoption(struct ast_channel *c, int option, void *data, int datalen);
1043 static int iax2_transfer(struct ast_channel *c, const char *dest);
1044 static int iax2_write(struct ast_channel *c, struct ast_frame *f);
1045 static int send_trunk(struct iax2_trunk_peer *tpeer, struct timeval *now);
1046 static int send_command(struct chan_iax2_pvt *, char, int, unsigned int, const unsigned char *, int, int);
1047 static int send_command_final(struct chan_iax2_pvt *, char, int, unsigned int, const unsigned char *, int, int);
1048 static int send_command_immediate(struct chan_iax2_pvt *, char, int, unsigned int, const unsigned char *, int, int);
1049 static int send_command_locked(unsigned short callno, char, int, unsigned int, const unsigned char *, int, int);
1050 static int send_command_transfer(struct chan_iax2_pvt *, char, int, unsigned int, const unsigned char *, int);
1051 static struct ast_channel *iax2_request(const char *type, int format, void *data, int *cause);
1052 static struct ast_frame *iax2_read(struct ast_channel *c);
1053 static struct iax2_peer *build_peer(const char *name, struct ast_variable *v, struct ast_variable *alt, int temponly);
1054 static struct iax2_user *build_user(const char *name, struct ast_variable *v, struct ast_variable *alt, int temponly);
1055 static void realtime_update_peer(const char *peername, struct sockaddr_in *sin, time_t regtime);
1056 static void prune_peers(void);
1057 static void *iax2_dup_variable_datastore(void *);
1058 static void iax2_free_variable_datastore(void *);
1060 static int acf_channel_read(struct ast_channel *chan, const char *funcname, char *preparse, char *buf, size_t buflen);
1061 static int acf_channel_write(struct ast_channel *chan, const char *function, char *data, const char *value);
1063 static const struct ast_channel_tech iax2_tech = {
1065 .description = tdesc,
1066 .capabilities = IAX_CAPABILITY_FULLBANDWIDTH,
1067 .properties = AST_CHAN_TP_WANTSJITTER,
1068 .requester = iax2_request,
1069 .devicestate = iax2_devicestate,
1070 .send_digit_begin = iax2_digit_begin,
1071 .send_digit_end = iax2_digit_end,
1072 .send_text = iax2_sendtext,
1073 .send_image = iax2_sendimage,
1074 .send_html = iax2_sendhtml,
1076 .hangup = iax2_hangup,
1077 .answer = iax2_answer,
1079 .write = iax2_write,
1080 .write_video = iax2_write,
1081 .indicate = iax2_indicate,
1082 .setoption = iax2_setoption,
1083 .bridge = iax2_bridge,
1084 .transfer = iax2_transfer,
1085 .fixup = iax2_fixup,
1086 .func_channel_read = acf_channel_read,
1087 .func_channel_write = acf_channel_write,
1090 static void mwi_event_cb(const struct ast_event *event, void *userdata)
1092 /* The MWI subscriptions exist just so the core knows we care about those
1093 * mailboxes. However, we just grab the events out of the cache when it
1094 * is time to send MWI, since it is only sent with a REGACK. */
1097 /*! \brief Send manager event at call setup to link between Asterisk channel name
1098 and IAX2 call identifiers */
1099 static void iax2_ami_channelupdate(struct chan_iax2_pvt *pvt)
1101 manager_event(EVENT_FLAG_SYSTEM, "ChannelUpdate",
1102 "Channel: %s\r\nChanneltype: IAX2\r\nIAX2-callno-local: %d\r\nIAX2-callno-remote: %d\r\nIAX2-peer: %s\r\n",
1103 pvt->owner ? pvt->owner->name : "",
1104 pvt->callno, pvt->peercallno, pvt->peer ? pvt->peer : "");
1108 static struct ast_datastore_info iax2_variable_datastore_info = {
1109 .type = "IAX2_VARIABLE",
1110 .duplicate = iax2_dup_variable_datastore,
1111 .destroy = iax2_free_variable_datastore,
1114 static void *iax2_dup_variable_datastore(void *old)
1116 AST_LIST_HEAD(, ast_var_t) *oldlist = old, *newlist;
1117 struct ast_var_t *oldvar, *newvar;
1119 newlist = ast_calloc(sizeof(*newlist), 1);
1121 ast_log(LOG_ERROR, "Unable to duplicate iax2 variables\n");
1125 AST_LIST_HEAD_INIT(newlist);
1126 AST_LIST_LOCK(oldlist);
1127 AST_LIST_TRAVERSE(oldlist, oldvar, entries) {
1128 newvar = ast_var_assign(ast_var_name(oldvar), ast_var_value(oldvar));
1130 AST_LIST_INSERT_TAIL(newlist, newvar, entries);
1132 ast_log(LOG_ERROR, "Unable to duplicate iax2 variable '%s'\n", ast_var_name(oldvar));
1134 AST_LIST_UNLOCK(oldlist);
1138 static void iax2_free_variable_datastore(void *old)
1140 AST_LIST_HEAD(, ast_var_t) *oldlist = old;
1141 struct ast_var_t *oldvar;
1143 AST_LIST_LOCK(oldlist);
1144 while ((oldvar = AST_LIST_REMOVE_HEAD(oldlist, entries))) {
1147 AST_LIST_UNLOCK(oldlist);
1148 AST_LIST_HEAD_DESTROY(oldlist);
1153 /* WARNING: insert_idle_thread should only ever be called within the
1154 * context of an iax2_process_thread() thread.
1156 static void insert_idle_thread(struct iax2_thread *thread)
1158 if (thread->type == IAX_THREAD_TYPE_DYNAMIC) {
1159 AST_LIST_LOCK(&dynamic_list);
1160 AST_LIST_INSERT_TAIL(&dynamic_list, thread, list);
1161 AST_LIST_UNLOCK(&dynamic_list);
1163 AST_LIST_LOCK(&idle_list);
1164 AST_LIST_INSERT_TAIL(&idle_list, thread, list);
1165 AST_LIST_UNLOCK(&idle_list);
1171 static struct iax2_thread *find_idle_thread(void)
1173 struct iax2_thread *thread = NULL;
1175 /* Pop the head of the idle list off */
1176 AST_LIST_LOCK(&idle_list);
1177 thread = AST_LIST_REMOVE_HEAD(&idle_list, list);
1178 AST_LIST_UNLOCK(&idle_list);
1180 /* If we popped a thread off the idle list, just return it */
1182 memset(&thread->ffinfo, 0, sizeof(thread->ffinfo));
1186 /* Pop the head of the dynamic list off */
1187 AST_LIST_LOCK(&dynamic_list);
1188 thread = AST_LIST_REMOVE_HEAD(&dynamic_list, list);
1189 AST_LIST_UNLOCK(&dynamic_list);
1191 /* If we popped a thread off the dynamic list, just return it */
1193 memset(&thread->ffinfo, 0, sizeof(thread->ffinfo));
1197 /* If we can't create a new dynamic thread for any reason, return no thread at all */
1198 if (iaxdynamicthreadcount >= iaxmaxthreadcount || !(thread = ast_calloc(1, sizeof(*thread))))
1201 /* Set default values */
1202 ast_atomic_fetchadd_int(&iaxdynamicthreadcount, 1);
1203 thread->threadnum = ast_atomic_fetchadd_int(&iaxdynamicthreadnum, 1);
1204 thread->type = IAX_THREAD_TYPE_DYNAMIC;
1206 /* Initialize lock and condition */
1207 ast_mutex_init(&thread->lock);
1208 ast_cond_init(&thread->cond, NULL);
1209 ast_mutex_init(&thread->init_lock);
1210 ast_cond_init(&thread->init_cond, NULL);
1211 ast_mutex_lock(&thread->init_lock);
1213 /* Create thread and send it on it's way */
1214 if (ast_pthread_create_detached_background(&thread->threadid, NULL, iax2_process_thread, thread)) {
1215 ast_cond_destroy(&thread->cond);
1216 ast_mutex_destroy(&thread->lock);
1221 /* this thread is not processing a full frame (since it is idle),
1222 so ensure that the field for the full frame call number is empty */
1223 memset(&thread->ffinfo, 0, sizeof(thread->ffinfo));
1225 /* Wait for the thread to be ready before returning it to the caller */
1226 ast_cond_wait(&thread->init_cond, &thread->init_lock);
1228 /* Done with init_lock */
1229 ast_mutex_unlock(&thread->init_lock);
1234 #ifdef SCHED_MULTITHREADED
1235 static int __schedule_action(void (*func)(const void *data), const void *data, const char *funcname)
1237 struct iax2_thread *thread = NULL;
1238 static time_t lasterror;
1241 thread = find_idle_thread();
1243 if (thread != NULL) {
1244 thread->schedfunc = func;
1245 thread->scheddata = data;
1246 thread->iostate = IAX_IOSTATE_SCHEDREADY;
1247 #ifdef DEBUG_SCHED_MULTITHREAD
1248 ast_copy_string(thread->curfunc, funcname, sizeof(thread->curfunc));
1250 signal_condition(&thread->lock, &thread->cond);
1255 ast_debug(1, "Out of idle IAX2 threads for scheduling!\n");
1260 #define schedule_action(func, data) __schedule_action(func, data, __PRETTY_FUNCTION__)
1263 static int iax2_sched_replace(int id, struct ast_sched_thread *st, int when,
1264 ast_sched_cb callback, const void *data)
1266 ast_sched_thread_del(st, id);
1268 return ast_sched_thread_add(st, when, callback, data);
1271 static int iax2_sched_add(struct ast_sched_thread *st, int when,
1272 ast_sched_cb callback, const void *data)
1274 return ast_sched_thread_add(st, when, callback, data);
1277 static int send_ping(const void *data);
1279 static void __send_ping(const void *data)
1281 int callno = (long) data;
1283 ast_mutex_lock(&iaxsl[callno]);
1286 if (iaxs[callno]->peercallno) {
1287 send_command(iaxs[callno], AST_FRAME_IAX, IAX_COMMAND_PING, 0, NULL, 0, -1);
1288 iaxs[callno]->pingid = iax2_sched_add(sched, ping_time * 1000, send_ping, data);
1290 /* I am the schedule, so I'm allowed to do this */
1291 iaxs[callno]->pingid = -1;
1293 } else if (option_debug > 0) {
1294 ast_log(LOG_DEBUG, "I was supposed to send a PING with callno %d, but no such call exists (and I cannot remove pingid, either).\n", callno);
1297 ast_mutex_unlock(&iaxsl[callno]);
1300 static int send_ping(const void *data)
1302 #ifdef SCHED_MULTITHREADED
1303 if (schedule_action(__send_ping, data))
1310 static int get_encrypt_methods(const char *s)
1313 if (!strcasecmp(s, "aes128"))
1314 e = IAX_ENCRYPT_AES128;
1315 else if (ast_true(s))
1316 e = IAX_ENCRYPT_AES128;
1322 static int send_lagrq(const void *data);
1324 static void __send_lagrq(const void *data)
1326 int callno = (long) data;
1328 ast_mutex_lock(&iaxsl[callno]);
1331 if (iaxs[callno]->peercallno) {
1332 send_command(iaxs[callno], AST_FRAME_IAX, IAX_COMMAND_LAGRQ, 0, NULL, 0, -1);
1333 iaxs[callno]->lagid = iax2_sched_add(sched, lagrq_time * 1000, send_lagrq, data);
1335 /* I am the schedule, so I'm allowed to do this */
1336 iaxs[callno]->lagid = -1;
1339 ast_log(LOG_WARNING, "I was supposed to send a LAGRQ with callno %d, but no such call exists (and I cannot remove lagid, either).\n", callno);
1342 ast_mutex_unlock(&iaxsl[callno]);
1345 static int send_lagrq(const void *data)
1347 #ifdef SCHED_MULTITHREADED
1348 if (schedule_action(__send_lagrq, data))
1355 static unsigned char compress_subclass(int subclass)
1359 /* If it's 128 or smaller, just return it */
1360 if (subclass < IAX_FLAG_SC_LOG)
1362 /* Otherwise find its power */
1363 for (x = 0; x < IAX_MAX_SHIFT; x++) {
1364 if (subclass & (1 << x)) {
1366 ast_log(LOG_WARNING, "Can't compress subclass %d\n", subclass);
1372 return power | IAX_FLAG_SC_LOG;
1375 static int uncompress_subclass(unsigned char csub)
1377 /* If the SC_LOG flag is set, return 2^csub otherwise csub */
1378 if (csub & IAX_FLAG_SC_LOG) {
1379 /* special case for 'compressed' -1 */
1383 return 1 << (csub & ~IAX_FLAG_SC_LOG & IAX_MAX_SHIFT);
1390 * \note The only member of the peer passed here guaranteed to be set is the name field
1392 static int peer_hash_cb(const void *obj, const int flags)
1394 const struct iax2_peer *peer = obj;
1396 return ast_str_hash(peer->name);
1400 * \note The only member of the peer passed here guaranteed to be set is the name field
1402 static int peer_cmp_cb(void *obj, void *arg, int flags)
1404 struct iax2_peer *peer = obj, *peer2 = arg;
1406 return !strcmp(peer->name, peer2->name) ? CMP_MATCH | CMP_STOP : 0;
1410 * \note The only member of the user passed here guaranteed to be set is the name field
1412 static int user_hash_cb(const void *obj, const int flags)
1414 const struct iax2_user *user = obj;
1416 return ast_str_hash(user->name);
1420 * \note The only member of the user passed here guaranteed to be set is the name field
1422 static int user_cmp_cb(void *obj, void *arg, int flags)
1424 struct iax2_user *user = obj, *user2 = arg;
1426 return !strcmp(user->name, user2->name) ? CMP_MATCH | CMP_STOP : 0;
1430 * \note This funtion calls realtime_peer -> reg_source_db -> iax2_poke_peer -> find_callno,
1431 * so do not call it with a pvt lock held.
1433 static struct iax2_peer *find_peer(const char *name, int realtime)
1435 struct iax2_peer *peer = NULL;
1436 struct iax2_peer tmp_peer = {
1440 peer = ao2_find(peers, &tmp_peer, OBJ_POINTER);
1442 /* Now go for realtime if applicable */
1443 if(!peer && realtime)
1444 peer = realtime_peer(name, NULL);
1449 static struct iax2_peer *peer_ref(struct iax2_peer *peer)
1455 static inline struct iax2_peer *peer_unref(struct iax2_peer *peer)
1461 static inline struct iax2_user *user_ref(struct iax2_user *user)
1467 static inline struct iax2_user *user_unref(struct iax2_user *user)
1473 static int iax2_getpeername(struct sockaddr_in sin, char *host, int len)
1475 struct iax2_peer *peer = NULL;
1477 struct ao2_iterator i;
1479 i = ao2_iterator_init(peers, 0);
1480 while ((peer = ao2_iterator_next(&i))) {
1481 if ((peer->addr.sin_addr.s_addr == sin.sin_addr.s_addr) &&
1482 (peer->addr.sin_port == sin.sin_port)) {
1483 ast_copy_string(host, peer->name, len);
1492 peer = realtime_peer(NULL, &sin);
1494 ast_copy_string(host, peer->name, len);
1503 /*!\note Assumes the lock on the pvt is already held, when
1504 * iax2_destroy_helper() is called. */
1505 static void iax2_destroy_helper(struct chan_iax2_pvt *pvt)
1507 /* Decrement AUTHREQ count if needed */
1508 if (ast_test_flag(pvt, IAX_MAXAUTHREQ)) {
1509 struct iax2_user *user;
1510 struct iax2_user tmp_user = {
1511 .name = pvt->username,
1514 user = ao2_find(users, &tmp_user, OBJ_POINTER);
1516 ast_atomic_fetchadd_int(&user->curauthreq, -1);
1520 ast_clear_flag(pvt, IAX_MAXAUTHREQ);
1522 /* No more pings or lagrq's */
1523 AST_SCHED_DEL_SPINLOCK(ast_sched_thread_get_context(sched), pvt->pingid, &iaxsl[pvt->callno]);
1524 AST_SCHED_DEL_SPINLOCK(ast_sched_thread_get_context(sched), pvt->lagid, &iaxsl[pvt->callno]);
1525 ast_sched_thread_del(sched, pvt->autoid);
1526 ast_sched_thread_del(sched, pvt->authid);
1527 ast_sched_thread_del(sched, pvt->initid);
1528 ast_sched_thread_del(sched, pvt->jbid);
1529 ast_sched_thread_del(sched, pvt->keyrotateid);
1532 static void iax2_frame_free(struct iax_frame *fr)
1534 ast_sched_thread_del(sched, fr->retrans);
1538 static int scheduled_destroy(const void *vid)
1540 short callno = PTR_TO_CALLNO(vid);
1541 ast_mutex_lock(&iaxsl[callno]);
1544 ast_log(LOG_DEBUG, "Really destroying %d now...\n", callno);
1546 iax2_destroy(callno);
1548 ast_mutex_unlock(&iaxsl[callno]);
1552 static void pvt_destructor(void *obj)
1554 struct chan_iax2_pvt *pvt = obj;
1555 struct iax_frame *cur = NULL;
1557 ast_mutex_lock(&iaxsl[pvt->callno]);
1558 iax2_destroy_helper(pvt);
1559 ast_mutex_unlock(&iaxsl[pvt->callno]);
1562 ast_set_flag(pvt, IAX_ALREADYGONE);
1564 AST_LIST_LOCK(&frame_queue);
1565 AST_LIST_TRAVERSE(&frame_queue, cur, list) {
1566 /* Cancel any pending transmissions */
1567 if (cur->callno == pvt->callno) {
1571 AST_LIST_UNLOCK(&frame_queue);
1574 pvt->reg->callno = 0;
1580 ast_variables_destroy(pvt->vars);
1584 while (jb_getall(pvt->jb, &frame) == JB_OK) {
1585 iax2_frame_free(frame.data);
1588 jb_destroy(pvt->jb);
1589 ast_string_field_free_memory(pvt);
1593 static struct chan_iax2_pvt *new_iax(struct sockaddr_in *sin, const char *host)
1595 struct chan_iax2_pvt *tmp;
1598 if (!(tmp = ao2_alloc(sizeof(*tmp), pvt_destructor))) {
1602 if (ast_string_field_init(tmp, 32)) {
1614 tmp->keyrotateid = -1;
1616 ast_string_field_set(tmp,exten, "s");
1617 ast_string_field_set(tmp,host, host);
1621 jbconf.max_jitterbuf = maxjitterbuffer;
1622 jbconf.resync_threshold = resyncthreshold;
1623 jbconf.max_contig_interp = maxjitterinterps;
1624 jbconf.target_extra = jittertargetextra;
1625 jb_setconf(tmp->jb,&jbconf);
1627 AST_LIST_HEAD_INIT_NOLOCK(&tmp->dpentries);
1632 static struct iax_frame *iaxfrdup2(struct iax_frame *fr)
1634 struct iax_frame *new = iax_frame_new(DIRECTION_INGRESS, fr->af.datalen, fr->cacheable);
1636 size_t afdatalen = new->afdatalen;
1637 memcpy(new, fr, sizeof(*new));
1638 iax_frame_wrap(new, &fr->af);
1639 new->afdatalen = afdatalen;
1642 new->direction = DIRECTION_INGRESS;
1648 #define NEW_PREVENT 0
1652 static int match(struct sockaddr_in *sin, unsigned short callno, unsigned short dcallno, const struct chan_iax2_pvt *cur, int check_dcallno)
1654 if ((cur->addr.sin_addr.s_addr == sin->sin_addr.s_addr) &&
1655 (cur->addr.sin_port == sin->sin_port)) {
1656 /* This is the main host */
1657 if ( (cur->peercallno == 0 || cur->peercallno == callno) &&
1658 (check_dcallno ? dcallno == cur->callno : 1) ) {
1659 /* That's us. Be sure we keep track of the peer call number */
1663 if ((cur->transfer.sin_addr.s_addr == sin->sin_addr.s_addr) &&
1664 (cur->transfer.sin_port == sin->sin_port) && (cur->transferring)) {
1665 /* We're transferring */
1666 if ((dcallno == cur->callno) || (cur->transferring == TRANSFER_MEDIAPASS && cur->transfercallno == callno))
1672 static void update_max_trunk(void)
1674 int max = TRUNK_CALL_START;
1677 /* XXX Prolly don't need locks here XXX */
1678 for (x = TRUNK_CALL_START; x < ARRAY_LEN(iaxs) - 1; x++) {
1686 ast_debug(1, "New max trunk callno is %d\n", max);
1689 static void update_max_nontrunk(void)
1693 /* XXX Prolly don't need locks here XXX */
1694 for (x=1;x<TRUNK_CALL_START - 1; x++) {
1698 maxnontrunkcall = max;
1700 ast_debug(1, "New max nontrunk callno is %d\n", max);
1703 static int make_trunk(unsigned short callno, int locked)
1707 struct timeval now = ast_tvnow();
1708 if (iaxs[callno]->oseqno) {
1709 ast_log(LOG_WARNING, "Can't make trunk once a call has started!\n");
1712 if (callno & TRUNK_CALL_START) {
1713 ast_log(LOG_WARNING, "Call %d is already a trunk\n", callno);
1716 for (x = TRUNK_CALL_START; x < ARRAY_LEN(iaxs) - 1; x++) {
1717 ast_mutex_lock(&iaxsl[x]);
1718 if (!iaxs[x] && ((now.tv_sec - lastused[x].tv_sec) > MIN_REUSE_TIME)) {
1720 * \note We delete these before switching the slot, because if
1721 * they fire in the meantime, they will generate a warning.
1723 ast_sched_thread_del(sched, iaxs[callno]->pingid);
1724 ast_sched_thread_del(sched, iaxs[callno]->lagid);
1725 iaxs[x] = iaxs[callno];
1726 iaxs[x]->callno = x;
1727 iaxs[callno] = NULL;
1728 /* Update the two timers that should have been started */
1729 iaxs[x]->pingid = iax2_sched_add(sched,
1730 ping_time * 1000, send_ping, (void *)(long)x);
1731 iaxs[x]->lagid = iax2_sched_add(sched,
1732 lagrq_time * 1000, send_lagrq, (void *)(long)x);
1734 ast_mutex_unlock(&iaxsl[callno]);
1737 ast_mutex_unlock(&iaxsl[x]);
1740 ast_mutex_unlock(&iaxsl[x]);
1742 if (x >= ARRAY_LEN(iaxs) - 1) {
1743 ast_log(LOG_WARNING, "Unable to trunk call: Insufficient space\n");
1746 ast_debug(1, "Made call %d into trunk call %d\n", callno, x);
1747 /* We move this call from a non-trunked to a trunked call */
1749 update_max_nontrunk();
1753 static void store_by_transfercallno(struct chan_iax2_pvt *pvt)
1755 if (!pvt->transfercallno) {
1756 ast_log(LOG_ERROR, "This should not be called without a transfer call number.\n");
1760 ao2_link(iax_transfercallno_pvts, pvt);
1763 static void remove_by_transfercallno(struct chan_iax2_pvt *pvt)
1765 if (!pvt->transfercallno) {
1766 ast_log(LOG_ERROR, "This should not be called without a transfer call number.\n");
1770 ao2_unlink(iax_transfercallno_pvts, pvt);
1772 static void store_by_peercallno(struct chan_iax2_pvt *pvt)
1774 if (!pvt->peercallno) {
1775 ast_log(LOG_ERROR, "This should not be called without a peer call number.\n");
1779 ao2_link(iax_peercallno_pvts, pvt);
1782 static void remove_by_peercallno(struct chan_iax2_pvt *pvt)
1784 if (!pvt->peercallno) {
1785 ast_log(LOG_ERROR, "This should not be called without a peer call number.\n");
1789 ao2_unlink(iax_peercallno_pvts, pvt);
1793 * \note Calling this function while holding another pvt lock can cause a deadlock.
1795 static int __find_callno(unsigned short callno, unsigned short dcallno, struct sockaddr_in *sin, int new, int sockfd, int return_locked, int check_dcallno)
1802 if (new <= NEW_ALLOW) {
1804 struct chan_iax2_pvt *pvt;
1805 struct chan_iax2_pvt tmp_pvt = {
1807 .peercallno = callno,
1808 .transfercallno = callno,
1810 .frames_received = check_dcallno,
1813 memcpy(&tmp_pvt.addr, sin, sizeof(tmp_pvt.addr));
1814 /* this works for finding normal call numbers not involving transfering */
1815 if ((pvt = ao2_find(iax_peercallno_pvts, &tmp_pvt, OBJ_POINTER))) {
1816 if (return_locked) {
1817 ast_mutex_lock(&iaxsl[pvt->callno]);
1824 /* this searches for transfer call numbers that might not get caught otherwise */
1825 memset(&tmp_pvt.addr, 0, sizeof(tmp_pvt.addr));
1826 memcpy(&tmp_pvt.transfer, sin, sizeof(tmp_pvt.addr));
1827 if ((pvt = ao2_find(iax_transfercallno_pvts, &tmp_pvt, OBJ_POINTER))) {
1828 if (return_locked) {
1829 ast_mutex_lock(&iaxsl[pvt->callno]);
1837 /* This will occur on the first response to a message that we initiated,
1838 * such as a PING. */
1840 ast_mutex_lock(&iaxsl[dcallno]);
1842 if (callno && dcallno && iaxs[dcallno] && !iaxs[dcallno]->peercallno && match(sin, callno, dcallno, iaxs[dcallno], check_dcallno)) {
1843 iaxs[dcallno]->peercallno = callno;
1845 store_by_peercallno(iaxs[dcallno]);
1846 if (!res || !return_locked) {
1847 ast_mutex_unlock(&iaxsl[dcallno]);
1852 ast_mutex_unlock(&iaxsl[dcallno]);
1855 /* If we get here, we SHOULD NOT find a call structure for this
1856 callno; if we do, it means that there is a call structure that
1857 has a peer callno but did NOT get entered into the hash table,
1860 If we find a call structure using this old, slow method, output a log
1861 message so we'll know about it. After a few months of leaving this in
1862 place, if we don't hear about people seeing these messages, we can
1863 remove this code for good.
1866 for (x = 1; !res && x < maxnontrunkcall; x++) {
1867 ast_mutex_lock(&iaxsl[x]);
1869 /* Look for an exact match */
1870 if (match(sin, callno, dcallno, iaxs[x], check_dcallno)) {
1874 if (!res || !return_locked)
1875 ast_mutex_unlock(&iaxsl[x]);
1877 for (x = TRUNK_CALL_START; !res && x < maxtrunkcall; x++) {
1878 ast_mutex_lock(&iaxsl[x]);
1880 /* Look for an exact match */
1881 if (match(sin, callno, dcallno, iaxs[x], check_dcallno)) {
1885 if (!res || !return_locked)
1886 ast_mutex_unlock(&iaxsl[x]);
1890 if (!res && (new >= NEW_ALLOW)) {
1891 int start, found = 0;
1893 /* It may seem odd that we look through the peer list for a name for
1894 * this *incoming* call. Well, it is weird. However, users don't
1895 * have an IP address/port number that we can match against. So,
1896 * this is just checking for a peer that has that IP/port and
1897 * assuming that we have a user of the same name. This isn't always
1898 * correct, but it will be changed if needed after authentication. */
1899 if (!iax2_getpeername(*sin, host, sizeof(host)))
1900 snprintf(host, sizeof(host), "%s:%d", ast_inet_ntoa(sin->sin_addr), ntohs(sin->sin_port));
1903 start = 2 + (ast_random() % (TRUNK_CALL_START - 1));
1904 for (x = start; 1; x++) {
1905 if (x == TRUNK_CALL_START) {
1910 /* Find first unused call number that hasn't been used in a while */
1911 ast_mutex_lock(&iaxsl[x]);
1912 if (!iaxs[x] && ((now.tv_sec - lastused[x].tv_sec) > MIN_REUSE_TIME)) {
1916 ast_mutex_unlock(&iaxsl[x]);
1918 if (x == start - 1) {
1922 /* We've still got lock held if we found a spot */
1923 if (x == start - 1 && !found) {
1924 ast_log(LOG_WARNING, "No more space\n");
1927 iaxs[x] = new_iax(sin, host);
1928 update_max_nontrunk();
1931 ast_debug(1, "Creating new call structure %d\n", x);
1932 iaxs[x]->sockfd = sockfd;
1933 iaxs[x]->addr.sin_port = sin->sin_port;
1934 iaxs[x]->addr.sin_family = sin->sin_family;
1935 iaxs[x]->addr.sin_addr.s_addr = sin->sin_addr.s_addr;
1936 iaxs[x]->peercallno = callno;
1937 iaxs[x]->callno = x;
1938 iaxs[x]->pingtime = DEFAULT_RETRY_TIME;
1939 iaxs[x]->expiry = min_reg_expire;
1940 iaxs[x]->pingid = iax2_sched_add(sched, ping_time * 1000, send_ping, (void *)(long)x);
1941 iaxs[x]->lagid = iax2_sched_add(sched, lagrq_time * 1000, send_lagrq, (void *)(long)x);
1942 iaxs[x]->amaflags = amaflags;
1943 ast_copy_flags(iaxs[x], &globalflags, IAX_NOTRANSFER | IAX_TRANSFERMEDIA | IAX_USEJITTERBUF | IAX_FORCEJITTERBUF | IAX_NOKEYROTATE | IAX_FORCE_ENCRYPT);
1944 ast_string_field_set(iaxs[x], accountcode, accountcode);
1945 ast_string_field_set(iaxs[x], mohinterpret, mohinterpret);
1946 ast_string_field_set(iaxs[x], mohsuggest, mohsuggest);
1947 ast_string_field_set(iaxs[x], parkinglot, default_parkinglot);
1949 if (iaxs[x]->peercallno) {
1950 store_by_peercallno(iaxs[x]);
1953 ast_log(LOG_WARNING, "Out of resources\n");
1954 ast_mutex_unlock(&iaxsl[x]);
1958 ast_mutex_unlock(&iaxsl[x]);
1964 static int find_callno(unsigned short callno, unsigned short dcallno, struct sockaddr_in *sin, int new, int sockfd, int full_frame) {
1966 return __find_callno(callno, dcallno, sin, new, sockfd, 0, full_frame);
1969 static int find_callno_locked(unsigned short callno, unsigned short dcallno, struct sockaddr_in *sin, int new, int sockfd, int full_frame) {
1971 return __find_callno(callno, dcallno, sin, new, sockfd, 1, full_frame);
1975 * \brief Queue a frame to a call's owning asterisk channel
1977 * \pre This function assumes that iaxsl[callno] is locked when called.
1979 * \note IMPORTANT NOTE!!! Any time this function is used, even if iaxs[callno]
1980 * was valid before calling it, it may no longer be valid after calling it.
1981 * This function may unlock and lock the mutex associated with this callno,
1982 * meaning that another thread may grab it and destroy the call.
1984 static int iax2_queue_frame(int callno, struct ast_frame *f)
1987 if (iaxs[callno] && iaxs[callno]->owner) {
1988 if (ast_channel_trylock(iaxs[callno]->owner)) {
1989 /* Avoid deadlock by pausing and trying again */
1990 DEADLOCK_AVOIDANCE(&iaxsl[callno]);
1992 ast_queue_frame(iaxs[callno]->owner, f);
1993 ast_channel_unlock(iaxs[callno]->owner);
2003 * \brief Queue a hangup frame on the ast_channel owner
2005 * This function queues a hangup frame on the owner of the IAX2 pvt struct that
2006 * is active for the given call number.
2008 * \pre Assumes lock for callno is already held.
2010 * \note IMPORTANT NOTE!!! Any time this function is used, even if iaxs[callno]
2011 * was valid before calling it, it may no longer be valid after calling it.
2012 * This function may unlock and lock the mutex associated with this callno,
2013 * meaning that another thread may grab it and destroy the call.
2015 static int iax2_queue_hangup(int callno)
2018 if (iaxs[callno] && iaxs[callno]->owner) {
2019 if (ast_channel_trylock(iaxs[callno]->owner)) {
2020 /* Avoid deadlock by pausing and trying again */
2021 DEADLOCK_AVOIDANCE(&iaxsl[callno]);
2023 ast_queue_hangup(iaxs[callno]->owner);
2024 ast_channel_unlock(iaxs[callno]->owner);
2034 * \brief Queue a control frame on the ast_channel owner
2036 * This function queues a control frame on the owner of the IAX2 pvt struct that
2037 * is active for the given call number.
2039 * \pre Assumes lock for callno is already held.
2041 * \note IMPORTANT NOTE!!! Any time this function is used, even if iaxs[callno]
2042 * was valid before calling it, it may no longer be valid after calling it.
2043 * This function may unlock and lock the mutex associated with this callno,
2044 * meaning that another thread may grab it and destroy the call.
2046 static int iax2_queue_control_data(int callno,
2047 enum ast_control_frame_type control, const void *data, size_t datalen)
2050 if (iaxs[callno] && iaxs[callno]->owner) {
2051 if (ast_channel_trylock(iaxs[callno]->owner)) {
2052 /* Avoid deadlock by pausing and trying again */
2053 DEADLOCK_AVOIDANCE(&iaxsl[callno]);
2055 ast_queue_control_data(iaxs[callno]->owner, control, data, datalen);
2056 ast_channel_unlock(iaxs[callno]->owner);
2064 static void destroy_firmware(struct iax_firmware *cur)
2066 /* Close firmware */
2068 munmap((void*)cur->fwh, ntohl(cur->fwh->datalen) + sizeof(*(cur->fwh)));
2074 static int try_firmware(char *s)
2077 struct iax_firmware *cur = NULL;
2078 int ifd, fd, res, len, chunk;
2079 struct ast_iax2_firmware_header *fwh, fwh2;
2080 struct MD5Context md5;
2081 unsigned char sum[16], buf[1024];
2084 if (!(s2 = alloca(strlen(s) + 100))) {
2085 ast_log(LOG_WARNING, "Alloca failed!\n");
2089 last = strrchr(s, '/');
2095 snprintf(s2, strlen(s) + 100, "/var/tmp/%s-%ld", last, (unsigned long)ast_random());
2097 if ((res = stat(s, &stbuf) < 0)) {
2098 ast_log(LOG_WARNING, "Failed to stat '%s': %s\n", s, strerror(errno));
2102 /* Make sure it's not a directory */
2103 if (S_ISDIR(stbuf.st_mode))
2105 ifd = open(s, O_RDONLY);
2107 ast_log(LOG_WARNING, "Cannot open '%s': %s\n", s, strerror(errno));
2110 fd = open(s2, O_RDWR | O_CREAT | O_EXCL, AST_FILE_MODE);
2112 ast_log(LOG_WARNING, "Cannot open '%s' for writing: %s\n", s2, strerror(errno));
2116 /* Unlink our newly created file */
2119 /* Now copy the firmware into it */
2120 len = stbuf.st_size;
2123 if (chunk > sizeof(buf))
2124 chunk = sizeof(buf);
2125 res = read(ifd, buf, chunk);
2127 ast_log(LOG_WARNING, "Only read %d of %d bytes of data :(: %s\n", res, chunk, strerror(errno));
2132 res = write(fd, buf, chunk);
2134 ast_log(LOG_WARNING, "Only write %d of %d bytes of data :(: %s\n", res, chunk, strerror(errno));
2142 /* Return to the beginning */
2143 lseek(fd, 0, SEEK_SET);
2144 if ((res = read(fd, &fwh2, sizeof(fwh2))) != sizeof(fwh2)) {
2145 ast_log(LOG_WARNING, "Unable to read firmware header in '%s'\n", s);
2149 if (ntohl(fwh2.magic) != IAX_FIRMWARE_MAGIC) {
2150 ast_log(LOG_WARNING, "'%s' is not a valid firmware file\n", s);
2154 if (ntohl(fwh2.datalen) != (stbuf.st_size - sizeof(fwh2))) {
2155 ast_log(LOG_WARNING, "Invalid data length in firmware '%s'\n", s);
2159 if (fwh2.devname[sizeof(fwh2.devname) - 1] || ast_strlen_zero((char *)fwh2.devname)) {
2160 ast_log(LOG_WARNING, "No or invalid device type specified for '%s'\n", s);
2164 fwh = (struct ast_iax2_firmware_header*)mmap(NULL, stbuf.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
2165 if (fwh == (void *) -1) {
2166 ast_log(LOG_WARNING, "mmap failed: %s\n", strerror(errno));
2171 MD5Update(&md5, fwh->data, ntohl(fwh->datalen));
2172 MD5Final(sum, &md5);
2173 if (memcmp(sum, fwh->chksum, sizeof(sum))) {
2174 ast_log(LOG_WARNING, "Firmware file '%s' fails checksum\n", s);
2175 munmap((void*)fwh, stbuf.st_size);
2180 AST_LIST_TRAVERSE(&firmwares, cur, list) {
2181 if (!strcmp((char *)cur->fwh->devname, (char *)fwh->devname)) {
2182 /* Found a candidate */
2183 if (cur->dead || (ntohs(cur->fwh->version) < ntohs(fwh->version)))
2184 /* The version we have on loaded is older, load this one instead */
2186 /* This version is no newer than what we have. Don't worry about it.
2187 We'll consider it a proper load anyhow though */
2188 munmap((void*)fwh, stbuf.st_size);
2194 if (!cur && ((cur = ast_calloc(1, sizeof(*cur))))) {
2196 AST_LIST_INSERT_TAIL(&firmwares, cur, list);
2201 munmap((void*)cur->fwh, cur->mmaplen);
2206 cur->mmaplen = stbuf.st_size;
2213 static int iax_check_version(char *dev)
2216 struct iax_firmware *cur = NULL;
2218 if (ast_strlen_zero(dev))
2221 AST_LIST_LOCK(&firmwares);
2222 AST_LIST_TRAVERSE(&firmwares, cur, list) {
2223 if (!strcmp(dev, (char *)cur->fwh->devname)) {
2224 res = ntohs(cur->fwh->version);
2228 AST_LIST_UNLOCK(&firmwares);
2233 static int iax_firmware_append(struct iax_ie_data *ied, const unsigned char *dev, unsigned int desc)
2236 unsigned int bs = desc & 0xff;
2237 unsigned int start = (desc >> 8) & 0xffffff;
2239 struct iax_firmware *cur;
2241 if (ast_strlen_zero((char *)dev) || !bs)
2246 AST_LIST_LOCK(&firmwares);
2247 AST_LIST_TRAVERSE(&firmwares, cur, list) {
2248 if (strcmp((char *)dev, (char *)cur->fwh->devname))
2250 iax_ie_append_int(ied, IAX_IE_FWBLOCKDESC, desc);
2251 if (start < ntohl(cur->fwh->datalen)) {
2252 bytes = ntohl(cur->fwh->datalen) - start;
2255 iax_ie_append_raw(ied, IAX_IE_FWBLOCKDATA, cur->fwh->data + start, bytes);
2258 iax_ie_append(ied, IAX_IE_FWBLOCKDATA);
2266 AST_LIST_UNLOCK(&firmwares);
2272 static void reload_firmware(int unload)
2274 struct iax_firmware *cur = NULL;
2277 char dir[256], fn[256];
2279 AST_LIST_LOCK(&firmwares);
2281 /* Mark all as dead */
2282 AST_LIST_TRAVERSE(&firmwares, cur, list)
2285 /* Now that we have marked them dead... load new ones */
2287 snprintf(dir, sizeof(dir), "%s/firmware/iax", ast_config_AST_DATA_DIR);
2290 while((de = readdir(fwd))) {
2291 if (de->d_name[0] != '.') {
2292 snprintf(fn, sizeof(fn), "%s/%s", dir, de->d_name);
2293 if (!try_firmware(fn)) {
2294 ast_verb(2, "Loaded firmware '%s'\n", de->d_name);
2300 ast_log(LOG_WARNING, "Error opening firmware directory '%s': %s\n", dir, strerror(errno));
2303 /* Clean up leftovers */
2304 AST_LIST_TRAVERSE_SAFE_BEGIN(&firmwares, cur, list) {
2307 AST_LIST_REMOVE_CURRENT(list);
2308 destroy_firmware(cur);
2310 AST_LIST_TRAVERSE_SAFE_END;
2312 AST_LIST_UNLOCK(&firmwares);
2316 * \note This function assumes that iaxsl[callno] is locked when called.
2318 * \note IMPORTANT NOTE!!! Any time this function is used, even if iaxs[callno]
2319 * was valid before calling it, it may no longer be valid after calling it.
2320 * This function calls iax2_queue_frame(), which may unlock and lock the mutex
2321 * associated with this callno, meaning that another thread may grab it and destroy the call.
2323 static int __do_deliver(void *data)
2325 /* Just deliver the packet by using queueing. This is called by
2326 the IAX thread with the iaxsl lock held. */
2327 struct iax_frame *fr = data;
2329 ast_clear_flag(&fr->af, AST_FRFLAG_HAS_TIMING_INFO);
2330 if (iaxs[fr->callno] && !ast_test_flag(iaxs[fr->callno], IAX_ALREADYGONE))
2331 iax2_queue_frame(fr->callno, &fr->af);
2332 /* Free our iax frame */
2333 iax2_frame_free(fr);
2334 /* And don't run again */
2338 static int handle_error(void)
2340 /* XXX Ideally we should figure out why an error occurred and then abort those
2341 rather than continuing to try. Unfortunately, the published interface does
2342 not seem to work XXX */
2344 struct sockaddr_in *sin;
2347 struct sock_extended_err e;
2352 m.msg_controllen = sizeof(e);
2354 res = recvmsg(netsocket, &m, MSG_ERRQUEUE);
2356 ast_log(LOG_WARNING, "Error detected, but unable to read error: %s\n", strerror(errno));
2358 if (m.msg_controllen) {
2359 sin = (struct sockaddr_in *)SO_EE_OFFENDER(&e);
2361 ast_log(LOG_WARNING, "Receive error from %s\n", ast_inet_ntoa(sin->sin_addr));
2363 ast_log(LOG_WARNING, "No address detected??\n");
2365 ast_log(LOG_WARNING, "Local error: %s\n", strerror(e.ee_errno));
2372 static int transmit_trunk(struct iax_frame *f, struct sockaddr_in *sin, int sockfd)
2375 res = sendto(sockfd, f->data, f->datalen, 0,(struct sockaddr *)sin,
2378 ast_debug(1, "Received error: %s\n", strerror(errno));
2385 static int send_packet(struct iax_frame *f)
2388 int callno = f->callno;
2390 /* Don't send if there was an error, but return error instead */
2391 if (!callno || !iaxs[callno] || iaxs[callno]->error)
2394 /* Called with iaxsl held */
2396 ast_debug(3, "Sending %d on %d/%d to %s:%d\n", f->ts, callno, iaxs[callno]->peercallno, ast_inet_ntoa(iaxs[callno]->addr.sin_addr), ntohs(iaxs[callno]->addr.sin_port));
2400 iax_showframe(f, NULL, 0, &iaxs[callno]->transfer, f->datalen - sizeof(struct ast_iax2_full_hdr));
2401 res = sendto(iaxs[callno]->sockfd, f->data, f->datalen, 0,(struct sockaddr *)&iaxs[callno]->transfer, sizeof(iaxs[callno]->transfer));
2404 iax_showframe(f, NULL, 0, &iaxs[callno]->addr, f->datalen - sizeof(struct ast_iax2_full_hdr));
2405 res = sendto(iaxs[callno]->sockfd, f->data, f->datalen, 0,(struct sockaddr *)&iaxs[callno]->addr, sizeof(iaxs[callno]->addr));
2409 ast_debug(1, "Received error: %s\n", strerror(errno));
2418 * \note Since this function calls iax2_queue_hangup(), the pvt struct
2419 * for the given call number may disappear during its execution.
2421 static int iax2_predestroy(int callno)
2423 struct ast_channel *c = NULL;
2424 struct chan_iax2_pvt *pvt = iaxs[callno];
2429 if (!ast_test_flag(pvt, IAX_ALREADYGONE)) {
2430 iax2_destroy_helper(pvt);
2431 ast_set_flag(pvt, IAX_ALREADYGONE);
2434 if ((c = pvt->owner)) {
2436 iax2_queue_hangup(callno);
2438 ast_module_unref(ast_module_info->self);
2444 static void iax2_destroy(int callno)
2446 struct chan_iax2_pvt *pvt = NULL;
2447 struct ast_channel *owner = NULL;
2450 if ((pvt = iaxs[callno])) {
2451 iax2_destroy_helper(pvt);
2454 lastused[callno] = ast_tvnow();
2456 owner = pvt ? pvt->owner : NULL;
2459 if (ast_channel_trylock(owner)) {
2460 ast_debug(3, "Avoiding IAX destroy deadlock\n");
2461 DEADLOCK_AVOIDANCE(&iaxsl[callno]);
2467 iaxs[callno] = NULL;
2474 /* If there's an owner, prod it to give up */
2475 /* It is ok to use ast_queue_hangup() here instead of iax2_queue_hangup()
2476 * because we already hold the owner channel lock. */
2477 ast_queue_hangup(owner);
2480 if (pvt->peercallno) {
2481 remove_by_peercallno(pvt);
2484 if (pvt->transfercallno) {
2485 remove_by_transfercallno(pvt);
2495 ast_channel_unlock(owner);
2498 if (callno & 0x4000) {
2503 static int update_packet(struct iax_frame *f)
2505 /* Called with iaxsl lock held, and iaxs[callno] non-NULL */
2506 struct ast_iax2_full_hdr *fh = f->data;
2507 /* Mark this as a retransmission */
2508 fh->dcallno = ntohs(IAX_FLAG_RETRANS | f->dcallno);
2510 f->iseqno = iaxs[f->callno]->iseqno;
2511 fh->iseqno = f->iseqno;
2515 static int attempt_transmit(const void *data);
2516 static void __attempt_transmit(const void *data)
2518 /* Attempt to transmit the frame to the remote peer...
2519 Called without iaxsl held. */
2520 struct iax_frame *f = (struct iax_frame *)data;
2522 int callno = f->callno;
2523 /* Make sure this call is still active */
2525 ast_mutex_lock(&iaxsl[callno]);
2526 if (callno && iaxs[callno]) {
2527 if ((f->retries < 0) /* Already ACK'd */ ||
2528 (f->retries >= max_retries) /* Too many attempts */) {
2529 /* Record an error if we've transmitted too many times */
2530 if (f->retries >= max_retries) {
2532 /* Transfer timeout */
2533 send_command(iaxs[callno], AST_FRAME_IAX, IAX_COMMAND_TXREJ, 0, NULL, 0, -1);
2534 } else if (f->final) {
2535 iax2_destroy(callno);
2537 if (iaxs[callno]->owner)
2538 ast_log(LOG_WARNING, "Max retries exceeded to host %s on %s (type = %d, subclass = %d, ts=%d, seqno=%d)\n", ast_inet_ntoa(iaxs[f->callno]->addr.sin_addr),iaxs[f->callno]->owner->name , f->af.frametype, f->af.subclass, f->ts, f->oseqno);
2539 iaxs[callno]->error = ETIMEDOUT;
2540 if (iaxs[callno]->owner) {
2541 struct ast_frame fr = { AST_FRAME_CONTROL, AST_CONTROL_HANGUP, .data.uint32 = AST_CAUSE_DESTINATION_OUT_OF_ORDER };
2543 iax2_queue_frame(callno, &fr); /* XXX */
2544 /* Remember, owner could disappear */
2545 if (iaxs[callno] && iaxs[callno]->owner)
2546 iaxs[callno]->owner->hangupcause = AST_CAUSE_DESTINATION_OUT_OF_ORDER;
2548 if (iaxs[callno]->reg) {
2549 memset(&iaxs[callno]->reg->us, 0, sizeof(iaxs[callno]->reg->us));
2550 iaxs[callno]->reg->regstate = REG_STATE_TIMEOUT;
2551 iaxs[callno]->reg->refresh = IAX_DEFAULT_REG_EXPIRE;
2553 iax2_destroy(callno);
2560 /* Update it if it needs it */
2562 /* Attempt transmission */
2565 /* Try again later after 10 times as long */
2567 if (f->retrytime > MAX_RETRY_TIME)
2568 f->retrytime = MAX_RETRY_TIME;
2569 /* Transfer messages max out at one second */
2570 if (f->transfer && (f->retrytime > 1000))
2571 f->retrytime = 1000;
2572 f->retrans = iax2_sched_add(sched, f->retrytime, attempt_transmit, f);
2575 /* Make sure it gets freed */
2580 ast_mutex_unlock(&iaxsl[callno]);
2581 /* Do not try again */
2583 /* Don't attempt delivery, just remove it from the queue */
2584 AST_LIST_LOCK(&frame_queue);
2585 AST_LIST_REMOVE(&frame_queue, f, list);
2586 AST_LIST_UNLOCK(&frame_queue);
2588 /* Free the IAX frame */
2593 static int attempt_transmit(const void *data)
2595 #ifdef SCHED_MULTITHREADED
2596 if (schedule_action(__attempt_transmit, data))
2598 __attempt_transmit(data);
2602 static char *handle_cli_iax2_prune_realtime(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
2604 struct iax2_peer *peer;
2605 static char *choices[] = { "all", NULL };
2610 e->command = "iax2 prune realtime";
2612 "Usage: iax2 prune realtime [<peername>|all]\n"
2613 " Prunes object(s) from the cache\n";
2617 cmplt = ast_cli_complete(a->word, choices, a->n);
2619 cmplt = complete_iax2_peers(a->line, a->word, a->pos, a->n - sizeof(choices), IAX_RTCACHEFRIENDS);
2626 return CLI_SHOWUSAGE;
2627 if (!strcmp(a->argv[3], "all")) {
2629 ast_cli(a->fd, "Cache flushed successfully.\n");
2630 } else if ((peer = find_peer(a->argv[3], 0))) {
2631 if (ast_test_flag(peer, IAX_RTCACHEFRIENDS)) {
2632 ast_set_flag(peer, IAX_RTAUTOCLEAR);
2633 expire_registry(peer_ref(peer));
2634 ast_cli(a->fd, "Peer %s was removed from the cache.\n", a->argv[3]);
2636 ast_cli(a->fd, "Peer %s is not eligible for this operation.\n", a->argv[3]);
2640 ast_cli(a->fd, "Peer %s was not found in the cache.\n", a->argv[3]);
2646 static char *handle_cli_iax2_test_losspct(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
2650 e->command = "iax2 test losspct";
2652 "Usage: iax2 test losspct <percentage>\n"
2653 " For testing, throws away <percentage> percent of incoming packets\n";
2659 return CLI_SHOWUSAGE;
2661 test_losspct = atoi(a->argv[3]);
2667 static char *handle_cli_iax2_test_late(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
2671 e->command = "iax2 test late";
2673 "Usage: iax2 test late <ms>\n"
2674 " For testing, count the next frame as <ms> ms late\n";
2681 return CLI_SHOWUSAGE;
2683 test_late = atoi(a->argv[3]);
2688 static char *handle_cli_iax2_test_resync(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
2692 e->command = "iax2 test resync";
2694 "Usage: iax2 test resync <ms>\n"
2695 " For testing, adjust all future frames by <ms> ms\n";
2702 return CLI_SHOWUSAGE;
2704 test_resync = atoi(a->argv[3]);
2709 static char *handle_cli_iax2_test_jitter(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
2713 e->command = "iax2 test jitter";
2715 "Usage: iax2 test jitter <ms> <pct>\n"
2716 " For testing, simulate maximum jitter of +/- <ms> on <pct>\n"
2717 " percentage of packets. If <pct> is not specified, adds\n"
2718 " jitter to all packets.\n";
2724 if (a->argc < 4 || a->argc > 5)
2725 return CLI_SHOWUSAGE;
2727 test_jit = atoi(a->argv[3]);
2729 test_jitpct = atoi(a->argv[4]);
2733 #endif /* IAXTESTS */
2735 /*! \brief peer_status: Report Peer status in character string */
2736 /* returns 1 if peer is online, -1 if unmonitored */
2737 static int peer_status(struct iax2_peer *peer, char *status, int statuslen)
2741 if (peer->lastms < 0) {
2742 ast_copy_string(status, "UNREACHABLE", statuslen);
2743 } else if (peer->lastms > peer->maxms) {
2744 snprintf(status, statuslen, "LAGGED (%d ms)", peer->lastms);
2746 } else if (peer->lastms) {
2747 snprintf(status, statuslen, "OK (%d ms)", peer->lastms);
2750 ast_copy_string(status, "UNKNOWN", statuslen);
2753 ast_copy_string(status, "Unmonitored", statuslen);
2759 /*! \brief Show one peer in detail */
2760 static char *handle_cli_iax2_show_peer(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
2764 struct iax2_peer *peer;
2765 char codec_buf[512];
2766 int x = 0, codec = 0, load_realtime = 0;
2770 e->command = "iax2 show peer";
2772 "Usage: iax2 show peer <name>\n"
2773 " Display details on specific IAX peer\n";
2777 return complete_iax2_peers(a->line, a->word, a->pos, a->n, 0);
2782 return CLI_SHOWUSAGE;
2784 load_realtime = (a->argc == 5 && !strcmp(a->argv[4], "load")) ? 1 : 0;
2786 peer = find_peer(a->argv[3], load_realtime);
2788 ast_cli(a->fd, "\n\n");
2789 ast_cli(a->fd, " * Name : %s\n", peer->name);
2790 ast_cli(a->fd, " Secret : %s\n", ast_strlen_zero(peer->secret) ? "<Not set>" : "<Set>");
2791 ast_cli(a->fd, " Context : %s\n", peer->context);
2792 ast_cli(a->fd, " Parking lot : %s\n", peer->parkinglot);
2793 ast_cli(a->fd, " Mailbox : %s\n", peer->mailbox);
2794 ast_cli(a->fd, " Dynamic : %s\n", ast_test_flag(peer, IAX_DYNAMIC) ? "Yes" : "No");
2795 ast_cli(a->fd, " Callerid : %s\n", ast_callerid_merge(cbuf, sizeof(cbuf), peer->cid_name, peer->cid_num, "<unspecified>"));
2796 ast_cli(a->fd, " Expire : %d\n", peer->expire);
2797 ast_cli(a->fd, " ACL : %s\n", (peer->ha ? "Yes" : "No"));
2798 ast_cli(a->fd, " Addr->IP : %s Port %d\n", peer->addr.sin_addr.s_addr ? ast_inet_ntoa(peer->addr.sin_addr) : "(Unspecified)", ntohs(peer->addr.sin_port));
2799 ast_cli(a->fd, " Defaddr->IP : %s Port %d\n", ast_inet_ntoa(peer->defaddr.sin_addr), ntohs(peer->defaddr.sin_port));
2800 ast_cli(a->fd, " Username : %s\n", peer->username);
2801 ast_cli(a->fd, " Codecs : ");
2802 ast_getformatname_multiple(codec_buf, sizeof(codec_buf) -1, peer->capability);
2803 ast_cli(a->fd, "%s\n", codec_buf);
2805 ast_cli(a->fd, " Codec Order : (");
2806 for(x = 0; x < 32 ; x++) {
2807 codec = ast_codec_pref_index(&peer->prefs,x);
2810 ast_cli(a->fd, "%s", ast_getformatname(codec));
2811 if(x < 31 && ast_codec_pref_index(&peer->prefs,x+1))
2812 ast_cli(a->fd, "|");
2816 ast_cli(a->fd, "none");
2817 ast_cli(a->fd, ")\n");
2819 ast_cli(a->fd, " Status : ");
2820 peer_status(peer, status, sizeof(status));
2821 ast_cli(a->fd, "%s\n",status);
2822 ast_cli(a->fd, " Qualify : every %dms when OK, every %dms when UNREACHABLE (sample smoothing %s)\n", peer->pokefreqok, peer->pokefreqnotok, peer->smoothing ? "On" : "Off");
2823 ast_cli(a->fd, "\n");
2826 ast_cli(a->fd, "Peer %s not found.\n", a->argv[3]);
2827 ast_cli(a->fd, "\n");
2833 static char *complete_iax2_peers(const char *line, const char *word, int pos, int state, int flags)
2836 struct iax2_peer *peer;
2838 int wordlen = strlen(word);
2839 struct ao2_iterator i;
2841 i = ao2_iterator_init(peers, 0);
2842 while ((peer = ao2_iterator_next(&i))) {
2843 if (!strncasecmp(peer->name, word, wordlen) && ++which > state
2844 && (!flags || ast_test_flag(peer, flags))) {
2845 res = ast_strdup(peer->name);
2855 static char *handle_cli_iax2_show_stats(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
2857 struct iax_frame *cur;
2858 int cnt = 0, dead = 0, final = 0;
2862 e->command = "iax2 show stats";
2864 "Usage: iax2 show stats\n"
2865 " Display statistics on IAX channel driver.\n";
2872 return CLI_SHOWUSAGE;
2874 AST_LIST_LOCK(&frame_queue);
2875 AST_LIST_TRAVERSE(&frame_queue, cur, list) {
2876 if (cur->retries < 0)
2882 AST_LIST_UNLOCK(&frame_queue);
2884 ast_cli(a->fd, " IAX Statistics\n");
2885 ast_cli(a->fd, "---------------------\n");
2886 ast_cli(a->fd, "Outstanding frames: %d (%d ingress, %d egress)\n", iax_get_frames(), iax_get_iframes(), iax_get_oframes());
2887 ast_cli(a->fd, "%d timed and %d untimed transmits; MTU %d/%d/%d\n", trunk_timed, trunk_untimed,
2888 trunk_maxmtu, trunk_nmaxmtu, global_max_trunk_mtu);
2889 ast_cli(a->fd, "Packets in transmit queue: %d dead, %d final, %d total\n\n", dead, final, cnt);
2891 trunk_timed = trunk_untimed = 0;
2892 if (trunk_maxmtu > trunk_nmaxmtu)
2893 trunk_nmaxmtu = trunk_maxmtu;
2898 /*! \brief Set trunk MTU from CLI */
2899 static char *handle_cli_iax2_set_mtu(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
2905 e->command = "iax2 set mtu";
2907 "Usage: iax2 set mtu <value>\n"
2908 " Set the system-wide IAX IP mtu to <value> bytes net or\n"
2909 " zero to disable. Disabling means that the operating system\n"
2910 " must handle fragmentation of UDP packets when the IAX2 trunk\n"
2911 " packet exceeds the UDP payload size. This is substantially\n"
2912 " below the IP mtu. Try 1240 on ethernets. Must be 172 or\n"
2913 " greater for G.711 samples.\n";
2920 return CLI_SHOWUSAGE;
2921 if (strncasecmp(a->argv[3], "default", strlen(a->argv[3])) == 0)
2922 mtuv = MAX_TRUNK_MTU;
2924 mtuv = atoi(a->argv[3]);
2927 ast_cli(a->fd, "Trunk MTU control disabled (mtu was %d)\n", global_max_trunk_mtu);
2928 global_max_trunk_mtu = 0;
2931 if (mtuv < 172 || mtuv > 4000) {
2932 ast_cli(a->fd, "Trunk MTU must be between 172 and 4000\n");
2933 return CLI_SHOWUSAGE;
2935 ast_cli(a->fd, "Trunk MTU changed from %d to %d\n", global_max_trunk_mtu, mtuv);
2936 global_max_trunk_mtu = mtuv;
2940 static char *handle_cli_iax2_show_cache(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
2942 struct iax2_dpcache *dp = NULL;
2943 char tmp[1024], *pc = NULL;
2945 struct timeval now = ast_tvnow();
2949 e->command = "iax2 show cache";
2951 "Usage: iax2 show cache\n"
2952 " Display currently cached IAX Dialplan results.\n";
2958 AST_LIST_LOCK(&dpcache);
2960 ast_cli(a->fd, "%-20.20s %-12.12s %-9.9s %-8.8s %s\n", "Peer/Context", "Exten", "Exp.", "Wait.", "Flags");
2962 AST_LIST_TRAVERSE(&dpcache, dp, cache_list) {
2963 s = dp->expiry.tv_sec - now.tv_sec;
2965 if (dp->flags & CACHE_FLAG_EXISTS)
2966 strncat(tmp, "EXISTS|", sizeof(tmp) - strlen(tmp) - 1);
2967 if (dp->flags & CACHE_FLAG_NONEXISTENT)
2968 strncat(tmp, "NONEXISTENT|", sizeof(tmp) - strlen(tmp) - 1);
2969 if (dp->flags & CACHE_FLAG_CANEXIST)
2970 strncat(tmp, "CANEXIST|", sizeof(tmp) - strlen(tmp) - 1);
2971 if (dp->flags & CACHE_FLAG_PENDING)
2972 strncat(tmp, "PENDING|", sizeof(tmp) - strlen(tmp) - 1);
2973 if (dp->flags & CACHE_FLAG_TIMEOUT)
2974 strncat(tmp, "TIMEOUT|", sizeof(tmp) - strlen(tmp) - 1);
2975 if (dp->flags & CACHE_FLAG_TRANSMITTED)
2976 strncat(tmp, "TRANSMITTED|", sizeof(tmp) - strlen(tmp) - 1);
2977 if (dp->flags & CACHE_FLAG_MATCHMORE)
2978 strncat(tmp, "MATCHMORE|", sizeof(tmp) - strlen(tmp) - 1);
2979 if (dp->flags & CACHE_FLAG_UNKNOWN)
2980 strncat(tmp, "UNKNOWN|", sizeof(tmp) - strlen(tmp) - 1);
2981 /* Trim trailing pipe */
2982 if (!ast_strlen_zero(tmp)) {
2983 tmp[strlen(tmp) - 1] = '\0';
2985 ast_copy_string(tmp, "(none)", sizeof(tmp));
2988 pc = strchr(dp->peercontext, '@');
2990 pc = dp->peercontext;
2994 for (x = 0; x < ARRAY_LEN(dp->waiters); x++) {
2995 if (dp->waiters[x] > -1)
2999 ast_cli(a->fd, "%-20.20s %-12.12s %-9d %-8d %s\n", pc, dp->exten, s, y, tmp);
3001 ast_cli(a->fd, "%-20.20s %-12.12s %-9.9s %-8d %s\n", pc, dp->exten, "(expired)", y, tmp);
3005 AST_LIST_LOCK(&dpcache);
3010 static unsigned int calc_rxstamp(struct chan_iax2_pvt *p, unsigned int offset);
3012 static void unwrap_timestamp(struct iax_frame *fr)
3014 /* Video mini frames only encode the lower 15 bits of the session
3015 * timestamp, but other frame types (e.g. audio) encode 16 bits. */
3016 const int ts_shift = (fr->af.frametype == AST_FRAME_VIDEO) ? 15 : 16;
3017 const int lower_mask = (1 << ts_shift) - 1;
3018 const int upper_mask = ~lower_mask;
3019 const int last_upper = iaxs[fr->callno]->last & upper_mask;
3021 if ( (fr->ts & upper_mask) == last_upper ) {
3022 const int x = fr->ts - iaxs[fr->callno]->last;
3023 const int threshold = (ts_shift == 15) ? 25000 : 50000;
3025 if (x < -threshold) {
3026 /* Sudden big jump backwards in timestamp:
3027 What likely happened here is that miniframe timestamp has circled but we haven't
3028 gotten the update from the main packet. We'll just pretend that we did, and
3029 update the timestamp appropriately. */
3030 fr->ts = (last_upper + (1 << ts_shift)) | (fr->ts & lower_mask);
3032 ast_debug(1, "schedule_delivery: pushed forward timestamp\n");
3033 } else if (x > threshold) {
3034 /* Sudden apparent big jump forwards in timestamp:
3035 What's likely happened is this is an old miniframe belonging to the previous
3036 top 15 or 16-bit timestamp that has turned up out of order.
3037 Adjust the timestamp appropriately. */
3038 fr->ts = (last_upper - (1 << ts_shift)) | (fr->ts & lower_mask);
3040 ast_debug(1, "schedule_delivery: pushed back timestamp\n");
3045 static int get_from_jb(const void *p);
3047 static void update_jbsched(struct chan_iax2_pvt *pvt)
3051 when = ast_tvdiff_ms(ast_tvnow(), pvt->rxcore);
3053 when = jb_next(pvt->jb) - when;
3056 /* XXX should really just empty until when > 0.. */
3060 pvt->jbid = iax2_sched_replace(pvt->jbid, sched, when, get_from_jb,
3061 CALLNO_TO_PTR(pvt->callno));
3064 static void __get_from_jb(const void *p)
3066 int callno = PTR_TO_CALLNO(p);
3067 struct chan_iax2_pvt *pvt = NULL;
3068 struct iax_frame *fr;
3073 struct timeval now = ast_tvnow();
3075 /* Make sure we have a valid private structure before going on */
3076 ast_mutex_lock(&iaxsl[callno]);
3080 ast_mutex_unlock(&iaxsl[callno]);
3086 /* round up a millisecond since ast_sched_runq does; */
3087 /* prevents us from spinning while waiting for our now */
3088 /* to catch up with runq's now */
3089 now.tv_usec += 1000;
3091 ms = ast_tvdiff_ms(now, pvt->rxcore);
3093 if(ms >= (next = jb_next(pvt->jb))) {
3094 ret = jb_get(pvt->jb,&frame,ms,ast_codec_interp_len(pvt->voiceformat));
3099 /* __do_deliver() can cause the call to disappear */
3104 struct ast_frame af = { 0, };
3106 /* create an interpolation frame */
3107 af.frametype = AST_FRAME_VOICE;
3108 af.subclass = pvt->voiceformat;
3109 af.samples = frame.ms * 8;
3110 af.src = "IAX2 JB interpolation";
3111 af.delivery = ast_tvadd(pvt->rxcore, ast_samp2tv(next, 1000));
3112 af.offset = AST_FRIENDLY_OFFSET;
3114 /* queue the frame: For consistency, we would call __do_deliver here, but __do_deliver wants an iax_frame,
3115 * which we'd need to malloc, and then it would free it. That seems like a drag */
3116 if (!ast_test_flag(iaxs[callno], IAX_ALREADYGONE)) {
3117 iax2_queue_frame(callno, &af);
3118 /* iax2_queue_frame() could cause the call to disappear */
3124 iax2_frame_free(frame.data);
3131 /* shouldn't happen */
3136 update_jbsched(pvt);
3137 ast_mutex_unlock(&iaxsl[callno]);
3140 static int get_from_jb(const void *data)
3142 #ifdef SCHED_MULTITHREADED
3143 if (schedule_action(__get_from_jb, data))
3145 __get_from_jb(data);
3150 * \note This function assumes fr->callno is locked
3152 * \note IMPORTANT NOTE!!! Any time this function is used, even if iaxs[callno]
3153 * was valid before calling it, it may no longer be valid after calling it.
3155 static int schedule_delivery(struct iax_frame *fr, int updatehistory, int fromtrunk, unsigned int *tsout)