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
22 * as specified in RFC 5456
24 * \author Mark Spencer <markster@digium.com>
27 * \arg \ref Config_iax
29 * \ingroup channel_drivers
31 * \todo Implement musicclass settings for IAX2 devices
35 <use type="external">crypto</use>
36 <support_level>core</support_level>
41 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
45 #include <sys/socket.h>
46 #include <netinet/in.h>
47 #include <arpa/inet.h>
48 #include <netinet/in_systm.h>
49 #include <netinet/ip.h>
51 #include <sys/signal.h>
59 #include "asterisk/paths.h" /* need ast_config_AST_DATA_DIR for firmware */
61 #include "asterisk/lock.h"
62 #include "asterisk/frame.h"
63 #include "asterisk/channel.h"
64 #include "asterisk/module.h"
65 #include "asterisk/pbx.h"
66 #include "asterisk/sched.h"
67 #include "asterisk/io.h"
68 #include "asterisk/config.h"
69 #include "asterisk/cli.h"
70 #include "asterisk/translate.h"
71 #include "asterisk/md5.h"
72 #include "asterisk/cdr.h"
73 #include "asterisk/crypto.h"
74 #include "asterisk/acl.h"
75 #include "asterisk/manager.h"
76 #include "asterisk/callerid.h"
77 #include "asterisk/app.h"
78 #include "asterisk/astdb.h"
79 #include "asterisk/musiconhold.h"
80 #include "asterisk/features.h"
81 #include "asterisk/utils.h"
82 #include "asterisk/causes.h"
83 #include "asterisk/localtime.h"
84 #include "asterisk/dnsmgr.h"
85 #include "asterisk/devicestate.h"
86 #include "asterisk/netsock.h"
87 #include "asterisk/stringfields.h"
88 #include "asterisk/linkedlists.h"
89 #include "asterisk/event.h"
90 #include "asterisk/astobj2.h"
91 #include "asterisk/timing.h"
92 #include "asterisk/taskprocessor.h"
93 #include "asterisk/test.h"
94 #include "asterisk/data.h"
95 #include "asterisk/netsock2.h"
98 #include "iax2-parser.h"
99 #include "iax2-provision.h"
100 #include "jitterbuf.h"
103 <application name="IAX2Provision" language="en_US">
105 Provision a calling IAXy with a given template.
108 <parameter name="template">
109 <para>If not specified, defaults to <literal>default</literal>.</para>
113 <para>Provisions the calling IAXy (assuming the calling entity is in fact an IAXy) with the
114 given <replaceable>template</replaceable>. Returns <literal>-1</literal> on error
115 or <literal>0</literal> on success.</para>
118 <function name="IAXPEER" language="en_US">
120 Gets IAX peer information.
123 <parameter name="peername" required="true">
125 <enum name="CURRENTCHANNEL">
126 <para>If <replaceable>peername</replaceable> is specified to this value, return the IP address of the
127 endpoint of the current channel</para>
131 <parameter name="item">
132 <para>If <replaceable>peername</replaceable> is specified, valid items are:</para>
135 <para>(default) The IP address.</para>
138 <para>The peer's status (if <literal>qualify=yes</literal>)</para>
140 <enum name="mailbox">
141 <para>The configured mailbox.</para>
143 <enum name="context">
144 <para>The configured context.</para>
147 <para>The epoch time of the next expire.</para>
149 <enum name="dynamic">
150 <para>Is it dynamic? (yes/no).</para>
152 <enum name="callerid_name">
153 <para>The configured Caller ID name.</para>
155 <enum name="callerid_num">
156 <para>The configured Caller ID number.</para>
159 <para>The configured codecs.</para>
161 <enum name="codec[x]">
162 <para>Preferred codec index number <replaceable>x</replaceable> (beginning
163 with <literal>0</literal>)</para>
168 <description></description>
170 <ref type="function">SIPPEER</ref>
173 <function name="IAXVAR" language="en_US">
175 Sets or retrieves a remote variable.
178 <parameter name="varname" required="true" />
180 <description></description>
182 <manager name="IAXpeers" language="en_US">
187 <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
192 <manager name="IAXpeerlist" language="en_US">
197 <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
200 <para>List all the IAX peers.</para>
203 <manager name="IAXnetstats" language="en_US">
209 <para>Show IAX channels network statistics.</para>
212 <manager name="IAXregistry" language="en_US">
214 Show IAX registrations.
217 <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
220 <para>Show IAX registrations.</para>
225 /* Define SCHED_MULTITHREADED to run the scheduler in a special
226 multithreaded mode. */
227 #define SCHED_MULTITHREADED
229 /* Define DEBUG_SCHED_MULTITHREADED to keep track of where each
230 thread is actually doing. */
231 #define DEBUG_SCHED_MULTITHREAD
235 static int nochecksums = 0;
238 #define PTR_TO_CALLNO(a) ((unsigned short)(unsigned long)(a))
239 #define CALLNO_TO_PTR(a) ((void *)(unsigned long)(a))
241 #define DEFAULT_THREAD_COUNT 10
242 #define DEFAULT_MAX_THREAD_COUNT 100
243 #define DEFAULT_RETRY_TIME 1000
244 #define MEMORY_SIZE 100
245 #define DEFAULT_DROP 3
247 #define DEBUG_SUPPORT
249 #define MIN_REUSE_TIME 60 /* Don't reuse a call number within 60 seconds */
251 /* Sample over last 100 units to determine historic jitter */
254 static struct ast_codec_pref prefs;
256 static const char tdesc[] = "Inter Asterisk eXchange Driver (Ver 2)";
259 /*! \brief Maximum transmission unit for the UDP packet in the trunk not to be
260 fragmented. This is based on 1516 - ethernet - ip - udp - iax minus one g711 frame = 1240 */
261 #define MAX_TRUNK_MTU 1240
263 static int global_max_trunk_mtu; /*!< Maximum MTU, 0 if not used */
264 static int trunk_timed, trunk_untimed, trunk_maxmtu, trunk_nmaxmtu ; /*!< Trunk MTU statistics */
266 #define DEFAULT_CONTEXT "default"
268 static char default_parkinglot[AST_MAX_CONTEXT];
270 static char language[MAX_LANGUAGE] = "";
271 static char regcontext[AST_MAX_CONTEXT] = "";
273 static struct ast_event_sub *network_change_event_subscription; /*!< subscription id for network change events */
274 static int network_change_event_sched_id = -1;
276 static int maxauthreq = 3;
277 static int max_retries = 4;
278 static int ping_time = 21;
279 static int lagrq_time = 10;
280 static int maxjitterbuffer=1000;
281 static int resyncthreshold=1000;
282 static int maxjitterinterps=10;
283 static int jittertargetextra = 40; /* number of milliseconds the new jitter buffer adds on to its size */
285 #define MAX_TRUNKDATA 640 * 200 /*!< 40ms, uncompressed linear * 200 channels */
287 static int trunkfreq = 20;
288 static int trunkmaxsize = MAX_TRUNKDATA;
290 static int authdebug = 0;
291 static int autokill = 0;
292 static int iaxcompat = 0;
293 static int last_authmethod = 0;
295 static int iaxdefaultdpcache=10 * 60; /* Cache dialplan entries for 10 minutes by default */
297 static int iaxdefaulttimeout = 5; /* Default to wait no more than 5 seconds for a reply to come back */
304 static int min_reg_expire;
305 static int max_reg_expire;
307 static int srvlookup = 0;
309 static struct ast_timer *timer; /* Timer for trunking */
311 static struct ast_netsock_list *netsock;
312 static struct ast_netsock_list *outsock; /*!< used if sourceaddress specified and bindaddr == INADDR_ANY */
313 static int defaultsockfd = -1;
315 static int (*iax2_regfunk)(const char *username, int onoff) = NULL;
318 #define IAX_CAPABILITY_FULLBANDWIDTH 0xFFFF
320 #define IAX_CAPABILITY_MEDBANDWIDTH (IAX_CAPABILITY_FULLBANDWIDTH & \
321 ~ast_format_id_to_old_bitfield(AST_FORMAT_SLINEAR) & \
322 ~ast_format_id_to_old_bitfield(AST_FORMAT_SLINEAR16) & \
323 ~ast_format_id_to_old_bitfield(AST_FORMAT_SIREN7) & \
324 ~ast_format_id_to_old_bitfield(AST_FORMAT_SIREN14) & \
325 ~ast_format_id_to_old_bitfield(AST_FORMAT_G719) & \
326 ~ast_format_id_to_old_bitfield(AST_FORMAT_ULAW) & \
327 ~ast_format_id_to_old_bitfield(AST_FORMAT_ALAW) & \
328 ~ast_format_id_to_old_bitfield(AST_FORMAT_G722))
330 #define IAX_CAPABILITY_LOWBANDWIDTH (IAX_CAPABILITY_MEDBANDWIDTH & \
331 ~ast_format_id_to_old_bitfield(AST_FORMAT_G726) & \
332 ~ast_format_id_to_old_bitfield(AST_FORMAT_G726_AAL2) & \
333 ~ast_format_id_to_old_bitfield(AST_FORMAT_ADPCM))
335 #define IAX_CAPABILITY_LOWFREE (IAX_CAPABILITY_LOWBANDWIDTH & \
336 ~ast_format_id_to_old_bitfield(AST_FORMAT_G723_1))
339 #define DEFAULT_MAXMS 2000 /* Must be faster than 2 seconds by default */
340 #define DEFAULT_FREQ_OK 60 * 1000 /* How often to check for the host to be up */
341 #define DEFAULT_FREQ_NOTOK 10 * 1000 /* How often to check, if the host is down... */
343 /* if a pvt has encryption setup done and is running on the call */
344 #define IAX_CALLENCRYPTED(pvt) \
345 (ast_test_flag64(pvt, IAX_ENCRYPTED) && ast_test_flag64(pvt, IAX_KEYPOPULATED))
347 #define IAX_DEBUGDIGEST(msg, key) do { \
349 char digest[33] = ""; \
354 for (idx = 0; idx < 16; idx++) \
355 sprintf(digest + (idx << 1), "%2.2x", (unsigned char) key[idx]); \
357 ast_log(LOG_NOTICE, msg " IAX_COMMAND_RTKEY to rotate key to '%s'\n", digest); \
360 static struct io_context *io;
361 static struct ast_sched_context *sched;
363 #define DONT_RESCHEDULE -2
365 static iax2_format iax2_capability = IAX_CAPABILITY_FULLBANDWIDTH;
367 static int iaxdebug = 0;
369 static int iaxtrunkdebug = 0;
371 static int test_losspct = 0;
373 static int test_late = 0;
374 static int test_resync = 0;
375 static int test_jit = 0;
376 static int test_jitpct = 0;
377 #endif /* IAXTESTS */
379 static char accountcode[AST_MAX_ACCOUNT_CODE];
380 static char mohinterpret[MAX_MUSICCLASS];
381 static char mohsuggest[MAX_MUSICCLASS];
382 static int amaflags = 0;
384 static int delayreject = 0;
385 static int iax2_encryption = 0;
387 static struct ast_flags64 globalflags = { 0 };
389 static pthread_t netthreadid = AST_PTHREADT_NULL;
392 IAX_STATE_STARTED = (1 << 0),
393 IAX_STATE_AUTHENTICATED = (1 << 1),
394 IAX_STATE_TBD = (1 << 2),
397 struct iax2_context {
398 char context[AST_MAX_CONTEXT];
399 struct iax2_context *next;
403 #define IAX_HASCALLERID (uint64_t)(1 << 0) /*!< CallerID has been specified */
404 #define IAX_DELME (uint64_t)(1 << 1) /*!< Needs to be deleted */
405 #define IAX_TEMPONLY (uint64_t)(1 << 2) /*!< Temporary (realtime) */
406 #define IAX_TRUNK (uint64_t)(1 << 3) /*!< Treat as a trunk */
407 #define IAX_NOTRANSFER (uint64_t)(1 << 4) /*!< Don't native bridge */
408 #define IAX_USEJITTERBUF (uint64_t)(1 << 5) /*!< Use jitter buffer */
409 #define IAX_DYNAMIC (uint64_t)(1 << 6) /*!< dynamic peer */
410 #define IAX_SENDANI (uint64_t)(1 << 7) /*!< Send ANI along with CallerID */
411 #define IAX_RTSAVE_SYSNAME (uint64_t)(1 << 8) /*!< Save Systname on Realtime Updates */
412 #define IAX_ALREADYGONE (uint64_t)(1 << 9) /*!< Already disconnected */
413 #define IAX_PROVISION (uint64_t)(1 << 10) /*!< This is a provisioning request */
414 #define IAX_QUELCH (uint64_t)(1 << 11) /*!< Whether or not we quelch audio */
415 #define IAX_ENCRYPTED (uint64_t)(1 << 12) /*!< Whether we should assume encrypted tx/rx */
416 #define IAX_KEYPOPULATED (uint64_t)(1 << 13) /*!< Whether we have a key populated */
417 #define IAX_CODEC_USER_FIRST (uint64_t)(1 << 14) /*!< are we willing to let the other guy choose the codec? */
418 #define IAX_CODEC_NOPREFS (uint64_t)(1 << 15) /*!< Force old behaviour by turning off prefs */
419 #define IAX_CODEC_NOCAP (uint64_t)(1 << 16) /*!< only consider requested format and ignore capabilities*/
420 #define IAX_RTCACHEFRIENDS (uint64_t)(1 << 17) /*!< let realtime stay till your reload */
421 #define IAX_RTUPDATE (uint64_t)(1 << 18) /*!< Send a realtime update */
422 #define IAX_RTAUTOCLEAR (uint64_t)(1 << 19) /*!< erase me on expire */
423 #define IAX_FORCEJITTERBUF (uint64_t)(1 << 20) /*!< Force jitterbuffer, even when bridged to a channel that can take jitter */
424 #define IAX_RTIGNOREREGEXPIRE (uint64_t)(1 << 21) /*!< When using realtime, ignore registration expiration */
425 #define IAX_TRUNKTIMESTAMPS (uint64_t)(1 << 22) /*!< Send trunk timestamps */
426 #define IAX_TRANSFERMEDIA (uint64_t)(1 << 23) /*!< When doing IAX2 transfers, transfer media only */
427 #define IAX_MAXAUTHREQ (uint64_t)(1 << 24) /*!< Maximum outstanding AUTHREQ restriction is in place */
428 #define IAX_DELAYPBXSTART (uint64_t)(1 << 25) /*!< Don't start a PBX on the channel until the peer sends us a response, so that we've achieved a three-way handshake with them before sending voice or anything else */
429 #define IAX_ALLOWFWDOWNLOAD (uint64_t)(1 << 26) /*!< Allow the FWDOWNL command? */
430 #define IAX_IMMEDIATE (uint64_t)(1 << 27) /*!< Allow immediate off-hook to extension s */
431 #define IAX_SENDCONNECTEDLINE (uint64_t)(1 << 28) /*!< Allow sending of connected line updates */
432 #define IAX_RECVCONNECTEDLINE (uint64_t)(1 << 29) /*!< Allow receiving of connected line updates */
433 #define IAX_FORCE_ENCRYPT (uint64_t)(1 << 30) /*!< Forces call encryption, if encryption not possible hangup */
434 #define IAX_SHRINKCALLERID (uint64_t)(1 << 31) /*!< Turn on and off caller id shrinking */
435 static int global_rtautoclear = 120;
437 static int reload_config(void);
440 * \brief Call token validation settings.
442 enum calltoken_peer_enum {
443 /*! \brief Default calltoken required unless the ip is in the ignorelist */
444 CALLTOKEN_DEFAULT = 0,
445 /*! \brief Require call token validation. */
447 /*! \brief Require call token validation after a successful registration
448 * using call token validation occurs. */
450 /*! \brief Do not require call token validation. */
455 AST_DECLARE_STRING_FIELDS(
456 AST_STRING_FIELD(name);
457 AST_STRING_FIELD(secret);
458 AST_STRING_FIELD(dbsecret);
459 AST_STRING_FIELD(accountcode);
460 AST_STRING_FIELD(mohinterpret);
461 AST_STRING_FIELD(mohsuggest);
462 AST_STRING_FIELD(inkeys); /*!< Key(s) this user can use to authenticate to us */
463 AST_STRING_FIELD(language);
464 AST_STRING_FIELD(cid_num);
465 AST_STRING_FIELD(cid_name);
466 AST_STRING_FIELD(parkinglot); /*!< Default parkinglot for device */
474 iax2_format capability;
475 int maxauthreq; /*!< Maximum allowed outstanding AUTHREQs */
476 int curauthreq; /*!< Current number of outstanding AUTHREQs */
477 struct ast_codec_pref prefs;
479 struct iax2_context *contexts;
480 struct ast_variable *vars;
481 enum calltoken_peer_enum calltoken_required; /*!< Is calltoken validation required or not, can be YES, NO, or AUTO */
485 AST_DECLARE_STRING_FIELDS(
486 AST_STRING_FIELD(name);
487 AST_STRING_FIELD(username);
488 AST_STRING_FIELD(description); /*!< Description of the peer */
489 AST_STRING_FIELD(secret);
490 AST_STRING_FIELD(dbsecret);
491 AST_STRING_FIELD(outkey); /*!< What key we use to talk to this peer */
493 AST_STRING_FIELD(regexten); /*!< Extension to register (if regcontext is used) */
494 AST_STRING_FIELD(context); /*!< For transfers only */
495 AST_STRING_FIELD(peercontext); /*!< Context to pass to peer */
496 AST_STRING_FIELD(mailbox); /*!< Mailbox */
497 AST_STRING_FIELD(mohinterpret);
498 AST_STRING_FIELD(mohsuggest);
499 AST_STRING_FIELD(inkeys); /*!< Key(s) this peer can use to authenticate to us */
500 /* Suggested caller id if registering */
501 AST_STRING_FIELD(cid_num); /*!< Default context (for transfer really) */
502 AST_STRING_FIELD(cid_name); /*!< Default context (for transfer really) */
503 AST_STRING_FIELD(zonetag); /*!< Time Zone */
504 AST_STRING_FIELD(parkinglot); /*!< Default parkinglot for device */
506 struct ast_codec_pref prefs;
507 struct ast_dnsmgr_entry *dnsmgr; /*!< DNS refresh manager */
508 struct ast_sockaddr addr;
510 int sockfd; /*!< Socket to use for transmission */
515 /* Dynamic Registration fields */
516 struct sockaddr_in defaddr; /*!< Default address if there is one */
517 int authmethods; /*!< Authentication methods (IAX_AUTH_*) */
518 int encmethods; /*!< Encryption methods (IAX_ENCRYPT_*) */
520 int expire; /*!< Schedule entry for expiry */
521 int expiry; /*!< How soon to expire */
522 iax2_format capability; /*!< Capability */
525 int callno; /*!< Call number of POKE request */
526 int pokeexpire; /*!< Scheduled qualification-related task (ie iax2_poke_peer_s or iax2_poke_noanswer) */
527 int lastms; /*!< How long last response took (in ms), or -1 for no response */
528 int maxms; /*!< Max ms we will accept for the host to be up, 0 to not monitor */
530 int pokefreqok; /*!< How often to check if the host is up */
531 int pokefreqnotok; /*!< How often to check when the host has been determined to be down */
532 int historicms; /*!< How long recent average responses took */
533 int smoothing; /*!< Sample over how many units to determine historic ms */
534 uint16_t maxcallno; /*!< Max call number limit for this peer. Set on registration */
536 struct ast_event_sub *mwi_event_sub;
539 enum calltoken_peer_enum calltoken_required; /*!< Is calltoken validation required or not, can be YES, NO, or AUTO */
542 #define IAX2_TRUNK_PREFACE (sizeof(struct iax_frame) + sizeof(struct ast_iax2_meta_hdr) + sizeof(struct ast_iax2_meta_trunk_hdr))
544 struct iax2_trunk_peer {
547 struct sockaddr_in addr;
548 struct timeval txtrunktime; /*!< Transmit trunktime */
549 struct timeval rxtrunktime; /*!< Receive trunktime */
550 struct timeval lasttxtime; /*!< Last transmitted trunktime */
551 struct timeval trunkact; /*!< Last trunk activity */
552 unsigned int lastsent; /*!< Last sent time */
553 /* Trunk data and length */
554 unsigned char *trunkdata;
555 unsigned int trunkdatalen;
556 unsigned int trunkdataalloc;
560 AST_LIST_ENTRY(iax2_trunk_peer) list;
563 static AST_LIST_HEAD_STATIC(tpeers, iax2_trunk_peer);
565 struct iax_firmware {
566 AST_LIST_ENTRY(iax_firmware) list;
570 struct ast_iax2_firmware_header *fwh;
575 REG_STATE_UNREGISTERED = 0,
578 REG_STATE_REGISTERED,
584 enum iax_transfer_state {
589 TRANSFER_PASSTHROUGH,
593 TRANSFER_MPASSTHROUGH,
598 struct iax2_registry {
599 struct ast_sockaddr addr; /*!< Who we connect to for registration purposes */
601 char secret[80]; /*!< Password or key name in []'s */
602 int expire; /*!< Sched ID of expiration */
603 int refresh; /*!< How often to refresh */
604 enum iax_reg_state regstate;
605 int messages; /*!< Message count, low 8 bits = new, high 8 bits = old */
606 int callno; /*!< Associated call number if applicable */
607 struct sockaddr_in us; /*!< Who the server thinks we are */
608 struct ast_dnsmgr_entry *dnsmgr; /*!< DNS refresh manager */
609 AST_LIST_ENTRY(iax2_registry) entry;
612 static AST_LIST_HEAD_STATIC(registrations, iax2_registry);
614 /* Don't retry more frequently than every 10 ms, or less frequently than every 5 seconds */
615 #define MIN_RETRY_TIME 100
616 #define MAX_RETRY_TIME 10000
618 #define MAX_JITTER_BUFFER 50
619 #define MIN_JITTER_BUFFER 10
621 #define DEFAULT_TRUNKDATA 640 * 10 /*!< 40ms, uncompressed linear * 10 channels */
623 #define MAX_TIMESTAMP_SKEW 160 /*!< maximum difference between actual and predicted ts for sending */
625 /* If consecutive voice frame timestamps jump by more than this many milliseconds, then jitter buffer will resync */
626 #define TS_GAP_FOR_JB_RESYNC 5000
628 /* used for first_iax_message and last_iax_message. If this bit is set it was TX, else RX */
629 #define MARK_IAX_SUBCLASS_TX 0x8000
631 static int iaxthreadcount = DEFAULT_THREAD_COUNT;
632 static int iaxmaxthreadcount = DEFAULT_MAX_THREAD_COUNT;
633 static int iaxdynamicthreadcount = 0;
634 static int iaxdynamicthreadnum = 0;
635 static int iaxactivethreadcount = 0;
649 struct chan_iax2_pvt {
650 /*! Socket to send/receive on for this call */
652 /*! Last received voice format */
653 iax2_format voiceformat;
654 /*! Last received video format */
655 iax2_format videoformat;
656 /*! Last sent voice format */
657 iax2_format svoiceformat;
658 /*! Last sent video format */
659 iax2_format svideoformat;
660 /*! What we are capable of sending */
661 iax2_format capability;
662 /*! Last received timestamp */
664 /*! Last sent timestamp - never send the same timestamp twice in a single call */
665 unsigned int lastsent;
666 /*! Timestamp of the last video frame sent */
667 unsigned int lastvsent;
668 /*! Next outgoing timestamp if everything is good */
669 unsigned int nextpred;
670 /*! iax frame subclass that began iax2_pvt entry. 0x8000 bit is set on TX */
671 int first_iax_message;
672 /*! Last iax frame subclass sent or received for a iax2_pvt. 0x8000 bit is set on TX */
673 int last_iax_message;
674 /*! True if the last voice we transmitted was not silence/CNG */
675 unsigned int notsilenttx:1;
677 unsigned int pingtime;
678 /*! Max time for initial response */
681 struct sockaddr_in addr;
682 /*! Actual used codec preferences */
683 struct ast_codec_pref prefs;
684 /*! Requested codec preferences */
685 struct ast_codec_pref rprefs;
686 /*! Our call number */
687 unsigned short callno;
688 /*! Our callno_entry entry */
689 struct callno_entry *callno_entry;
691 unsigned short peercallno;
692 /*! Negotiated format, this is only used to remember what format was
693 chosen for an unauthenticated call so that the channel can get
694 created later using the right format */
695 iax2_format chosenformat;
696 /*! Peer selected format */
697 iax2_format peerformat;
698 /*! Peer capability */
699 iax2_format peercapability;
700 /*! timeval that we base our transmission on */
701 struct timeval offset;
702 /*! timeval that we base our delivery on */
703 struct timeval rxcore;
704 /*! The jitterbuffer */
706 /*! active jb read scheduler id */
710 /*! Error, as discovered by the manager */
712 /*! Owner if we have one */
713 struct ast_channel *owner;
714 /*! What's our state? */
715 struct ast_flags state;
716 /*! Expiry (optional) */
718 /*! Next outgoing sequence number */
719 unsigned char oseqno;
720 /*! Next sequence number they have not yet acknowledged */
721 unsigned char rseqno;
722 /*! Next incoming sequence number */
723 unsigned char iseqno;
724 /*! Last incoming sequence number we have acknowledged */
725 unsigned char aseqno;
727 AST_DECLARE_STRING_FIELDS(
729 AST_STRING_FIELD(peer);
730 /*! Default Context */
731 AST_STRING_FIELD(context);
732 /*! Caller ID if available */
733 AST_STRING_FIELD(cid_num);
734 AST_STRING_FIELD(cid_name);
735 /*! Hidden Caller ID (i.e. ANI) if appropriate */
736 AST_STRING_FIELD(ani);
738 AST_STRING_FIELD(dnid);
740 AST_STRING_FIELD(rdnis);
741 /*! Requested Extension */
742 AST_STRING_FIELD(exten);
743 /*! Expected Username */
744 AST_STRING_FIELD(username);
745 /*! Expected Secret */
746 AST_STRING_FIELD(secret);
748 AST_STRING_FIELD(challenge);
749 /*! Public keys permitted keys for incoming authentication */
750 AST_STRING_FIELD(inkeys);
751 /*! Private key for outgoing authentication */
752 AST_STRING_FIELD(outkey);
753 /*! Preferred language */
754 AST_STRING_FIELD(language);
755 /*! Hostname/peername for naming purposes */
756 AST_STRING_FIELD(host);
758 AST_STRING_FIELD(dproot);
759 AST_STRING_FIELD(accountcode);
760 AST_STRING_FIELD(mohinterpret);
761 AST_STRING_FIELD(mohsuggest);
762 /*! received OSP token */
763 AST_STRING_FIELD(osptoken);
764 /*! Default parkinglot */
765 AST_STRING_FIELD(parkinglot);
767 /*! AUTHREJ all AUTHREP frames */
769 /*! permitted authentication methods */
771 /*! permitted encryption methods */
773 /*! Encryption AES-128 Key */
774 ast_aes_encrypt_key ecx;
775 /*! Decryption AES-128 Key corresponding to ecx */
776 ast_aes_decrypt_key mydcx;
777 /*! Decryption AES-128 Key used to decrypt peer frames */
778 ast_aes_decrypt_key dcx;
779 /*! scheduler id associated with iax_key_rotate
780 * for encrypted calls*/
782 /*! 32 bytes of semi-random data */
783 unsigned char semirand[32];
784 /*! Associated registry */
785 struct iax2_registry *reg;
786 /*! Associated peer for poking */
787 struct iax2_peer *peerpoke;
792 /*! Transferring status */
793 enum iax_transfer_state transferring;
794 /*! Transfer identifier */
796 /*! Who we are IAX transferring to */
797 struct sockaddr_in transfer;
798 /*! What's the new call number for the transfer */
799 unsigned short transfercallno;
800 /*! Transfer encrypt AES-128 Key */
801 ast_aes_encrypt_key tdcx;
803 /*! Status of knowledge of peer ADSI capability */
806 /*! Who we are bridged to */
807 unsigned short bridgecallno;
809 int pingid; /*!< Transmit PING request */
810 int lagid; /*!< Retransmit lag request */
811 int autoid; /*!< Auto hangup for Dialplan requestor */
812 int authid; /*!< Authentication rejection ID */
813 int authfail; /*!< Reason to report failure */
814 int initid; /*!< Initial peer auto-congest ID (based on qualified peers) */
819 AST_LIST_HEAD_NOLOCK(, iax2_dpcache) dpentries;
820 /*! variables inherited from the user definition */
821 struct ast_variable *vars;
822 /*! variables transmitted in a NEW packet */
823 struct ast_variable *iaxvars;
824 /*! last received remote rr */
825 struct iax_rr remote_rr;
826 /*! Current base time: (just for stats) */
828 /*! Dropped frame count: (just for stats) */
830 /*! received frame count: (just for stats) */
832 /*! num bytes used for calltoken ie, even an empty ie should contain 2 */
833 unsigned char calltoken_ie_len;
834 /*! hold all signaling frames from the pbx thread until we have a destination callno */
836 /*! frame queue for signaling frames from pbx thread waiting for destination callno */
837 AST_LIST_HEAD_NOLOCK(signaling_queue, signaling_queue_entry) signaling_queue;
840 struct signaling_queue_entry {
842 AST_LIST_ENTRY(signaling_queue_entry) next;
845 /*! table of available call numbers */
846 static struct ao2_container *callno_pool;
848 /*! table of available trunk call numbers */
849 static struct ao2_container *callno_pool_trunk;
851 static const unsigned int CALLNO_POOL_BUCKETS = 2699;
854 * \brief a list of frames that may need to be retransmitted
856 * \note The contents of this list do not need to be explicitly destroyed
857 * on module unload. This is because all active calls are destroyed, and
858 * all frames in this queue will get destroyed as a part of that process.
860 * \note Contents protected by the iaxsl[] locks
862 static AST_LIST_HEAD_NOLOCK(, iax_frame) frame_queue[IAX_MAX_CALLS + 1];
864 static struct ast_taskprocessor *transmit_processor;
866 static int randomcalltokendata;
868 static const time_t MAX_CALLTOKEN_DELAY = 10;
871 * This module will get much higher performance when doing a lot of
872 * user and peer lookups if the number of buckets is increased from 1.
873 * However, to maintain old behavior for Asterisk 1.4, these are set to
874 * 1 by default. When using multiple buckets, search order through these
875 * containers is considered random, so you will not be able to depend on
876 * the order the entires are specified in iax.conf for matching order. */
878 #define MAX_PEER_BUCKETS 17
880 #define MAX_PEER_BUCKETS 563
882 static struct ao2_container *peers;
884 #define MAX_USER_BUCKETS MAX_PEER_BUCKETS
885 static struct ao2_container *users;
887 /*! Table containing peercnt objects for every ip address consuming a callno */
888 static struct ao2_container *peercnts;
890 /*! Table containing custom callno limit rules for a range of ip addresses. */
891 static struct ao2_container *callno_limits;
893 /*! Table containing ip addresses not requiring calltoken validation */
894 static struct ao2_container *calltoken_ignores;
896 static uint16_t DEFAULT_MAXCALLNO_LIMIT = 2048;
898 static uint16_t DEFAULT_MAXCALLNO_LIMIT_NONVAL = 8192;
900 static uint16_t global_maxcallno;
902 /*! Total num of call numbers allowed to be allocated without calltoken validation */
903 static uint16_t global_maxcallno_nonval;
905 static uint16_t total_nonval_callno_used = 0;
907 /*! peer connection private, keeps track of all the call numbers
908 * consumed by a single ip address */
910 /*! ip address consuming call numbers */
912 /*! Number of call numbers currently used by this ip address */
914 /*! Max call numbers allowed for this ip address */
916 /*! Specifies whether limit is set by a registration or not, if so normal
917 * limit setting rules do not apply to this address. */
921 /*! used by both callno_limits and calltoken_ignores containers */
923 /*! ip address range for custom callno limit rule */
925 /*! callno limit for this ip address range, only used in callno_limits container */
927 /*! delete me marker for reloads */
931 struct callno_entry {
932 /*! callno used for this entry */
934 /*! was this callno calltoken validated or not */
935 unsigned char validated;
938 static AST_LIST_HEAD_STATIC(firmwares, iax_firmware);
941 /*! Extension exists */
942 CACHE_FLAG_EXISTS = (1 << 0),
943 /*! Extension is nonexistent */
944 CACHE_FLAG_NONEXISTENT = (1 << 1),
945 /*! Extension can exist */
946 CACHE_FLAG_CANEXIST = (1 << 2),
947 /*! Waiting to hear back response */
948 CACHE_FLAG_PENDING = (1 << 3),
950 CACHE_FLAG_TIMEOUT = (1 << 4),
951 /*! Request transmitted */
952 CACHE_FLAG_TRANSMITTED = (1 << 5),
954 CACHE_FLAG_UNKNOWN = (1 << 6),
956 CACHE_FLAG_MATCHMORE = (1 << 7),
959 struct iax2_dpcache {
960 char peercontext[AST_MAX_CONTEXT];
961 char exten[AST_MAX_EXTENSION];
963 struct timeval expiry;
965 unsigned short callno;
967 AST_LIST_ENTRY(iax2_dpcache) cache_list;
968 AST_LIST_ENTRY(iax2_dpcache) peer_list;
971 static AST_LIST_HEAD_STATIC(dpcache, iax2_dpcache);
973 static void reg_source_db(struct iax2_peer *p);
974 static struct iax2_peer *realtime_peer(const char *peername, struct sockaddr_in *sin);
975 static struct iax2_user *realtime_user(const char *username, struct sockaddr_in *sin);
977 static int ast_cli_netstats(struct mansession *s, int fd, int limit_fmt);
978 static char *complete_iax2_peers(const char *line, const char *word, int pos, int state, uint64_t flags);
979 static char *complete_iax2_unregister(const char *line, const char *word, int pos, int state);
981 enum iax2_thread_iostate {
984 IAX_IOSTATE_PROCESSING,
985 IAX_IOSTATE_SCHEDREADY,
988 enum iax2_thread_type {
989 IAX_THREAD_TYPE_POOL,
990 IAX_THREAD_TYPE_DYNAMIC,
993 struct iax2_pkt_buf {
994 AST_LIST_ENTRY(iax2_pkt_buf) entry;
996 unsigned char buf[1];
1000 AST_LIST_ENTRY(iax2_thread) list;
1001 enum iax2_thread_type type;
1002 enum iax2_thread_iostate iostate;
1003 #ifdef SCHED_MULTITHREADED
1004 void (*schedfunc)(const void *);
1005 const void *scheddata;
1007 #ifdef DEBUG_SCHED_MULTITHREAD
1013 struct sockaddr_in iosin;
1014 unsigned char readbuf[4096];
1022 ast_mutex_t init_lock;
1023 ast_cond_t init_cond;
1024 /*! if this thread is processing a full frame,
1025 some information about that frame will be stored
1026 here, so we can avoid dispatching any more full
1027 frames for that callno to other threads */
1029 unsigned short callno;
1030 struct sockaddr_in sin;
1034 /*! Queued up full frames for processing. If more full frames arrive for
1035 * a call which this thread is already processing a full frame for, they
1036 * are queued up here. */
1037 AST_LIST_HEAD_NOLOCK(, iax2_pkt_buf) full_frames;
1042 static AST_LIST_HEAD_STATIC(idle_list, iax2_thread);
1043 static AST_LIST_HEAD_STATIC(active_list, iax2_thread);
1044 static AST_LIST_HEAD_STATIC(dynamic_list, iax2_thread);
1046 static void *iax2_process_thread(void *data);
1047 static void iax2_destroy(int callno);
1049 static void signal_condition(ast_mutex_t *lock, ast_cond_t *cond)
1051 ast_mutex_lock(lock);
1052 ast_cond_signal(cond);
1053 ast_mutex_unlock(lock);
1057 * \brief an array of iax2 pvt structures
1059 * The container for active chan_iax2_pvt structures is implemented as an
1060 * array for extremely quick direct access to the correct pvt structure
1061 * based on the local call number. The local call number is used as the
1062 * index into the array where the associated pvt structure is stored.
1064 static struct chan_iax2_pvt *iaxs[IAX_MAX_CALLS + 1];
1067 * \brief Another container of iax2_pvt structures
1069 * Active IAX2 pvt structs are also stored in this container, if they are a part
1070 * of an active call where we know the remote side's call number. The reason
1071 * for this is that incoming media frames do not contain our call number. So,
1072 * instead of having to iterate the entire iaxs array, we use this container to
1073 * look up calls where the remote side is using a given call number.
1075 static struct ao2_container *iax_peercallno_pvts;
1078 * \brief chan_iax2_pvt structure locks
1080 * These locks are used when accessing a pvt structure in the iaxs array.
1081 * The index used here is the same as used in the iaxs array. It is the
1082 * local call number for the associated pvt struct.
1084 static ast_mutex_t iaxsl[ARRAY_LEN(iaxs)];
1087 * * \brief Another container of iax2_pvt structures
1089 * Active IAX2 pvt stucts used during transfering a call are stored here.
1091 static struct ao2_container *iax_transfercallno_pvts;
1093 /* Flag to use with trunk calls, keeping these calls high up. It halves our effective use
1094 but keeps the division between trunked and non-trunked better. */
1095 #define TRUNK_CALL_START IAX_MAX_CALLS / 2
1097 /* Debug routines... */
1098 static struct sockaddr_in debugaddr;
1100 static void iax_outputframe(struct iax_frame *f, struct ast_iax2_full_hdr *fhi, int rx, struct sockaddr_in *sin, int datalen)
1103 (sin && debugaddr.sin_addr.s_addr &&
1104 (!ntohs(debugaddr.sin_port) ||
1105 debugaddr.sin_port == sin->sin_port) &&
1106 debugaddr.sin_addr.s_addr == sin->sin_addr.s_addr)) {
1108 iax_showframe(f, fhi, rx, sin, datalen);
1111 iax_showframe(f, fhi, rx, sin, datalen);
1117 static void iax_debug_output(const char *data)
1120 ast_verbose("%s", data);
1123 static void iax_error_output(const char *data)
1125 ast_log(LOG_WARNING, "%s", data);
1128 static void __attribute__((format(printf, 1, 2))) jb_error_output(const char *fmt, ...)
1133 va_start(args, fmt);
1134 vsnprintf(buf, sizeof(buf), fmt, args);
1137 ast_log(LOG_ERROR, "%s", buf);
1140 static void __attribute__((format(printf, 1, 2))) jb_warning_output(const char *fmt, ...)
1145 va_start(args, fmt);
1146 vsnprintf(buf, sizeof(buf), fmt, args);
1149 ast_log(LOG_WARNING, "%s", buf);
1152 static void __attribute__((format(printf, 1, 2))) jb_debug_output(const char *fmt, ...)
1157 va_start(args, fmt);
1158 vsnprintf(buf, sizeof(buf), fmt, args);
1161 ast_verbose("%s", buf);
1164 static int maxtrunkcall = TRUNK_CALL_START;
1165 static int maxnontrunkcall = 1;
1167 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);
1168 static int expire_registry(const void *data);
1169 static int iax2_answer(struct ast_channel *c);
1170 static int iax2_call(struct ast_channel *c, char *dest, int timeout);
1171 static int iax2_devicestate(void *data);
1172 static int iax2_digit_begin(struct ast_channel *c, char digit);
1173 static int iax2_digit_end(struct ast_channel *c, char digit, unsigned int duration);
1174 static int iax2_do_register(struct iax2_registry *reg);
1175 static int iax2_fixup(struct ast_channel *oldchannel, struct ast_channel *newchan);
1176 static int iax2_hangup(struct ast_channel *c);
1177 static int iax2_indicate(struct ast_channel *c, int condition, const void *data, size_t datalen);
1178 static int iax2_poke_peer(struct iax2_peer *peer, int heldcall);
1179 static int iax2_provision(struct sockaddr_in *end, int sockfd, const char *dest, const char *template, int force);
1180 static int iax2_send(struct chan_iax2_pvt *pvt, struct ast_frame *f, unsigned int ts, int seqno, int now, int transfer, int final);
1181 static int iax2_sendhtml(struct ast_channel *c, int subclass, const char *data, int datalen);
1182 static int iax2_sendimage(struct ast_channel *c, struct ast_frame *img);
1183 static int iax2_sendtext(struct ast_channel *c, const char *text);
1184 static int iax2_setoption(struct ast_channel *c, int option, void *data, int datalen);
1185 static int iax2_queryoption(struct ast_channel *c, int option, void *data, int *datalen);
1186 static int iax2_transfer(struct ast_channel *c, const char *dest);
1187 static int iax2_write(struct ast_channel *c, struct ast_frame *f);
1188 static int iax2_sched_add(struct ast_sched_context *sched, int when, ast_sched_cb callback, const void *data);
1190 static int send_trunk(struct iax2_trunk_peer *tpeer, struct timeval *now);
1191 static int send_command(struct chan_iax2_pvt *, char, int, unsigned int, const unsigned char *, int, int);
1192 static int send_command_final(struct chan_iax2_pvt *, char, int, unsigned int, const unsigned char *, int, int);
1193 static int send_command_immediate(struct chan_iax2_pvt *, char, int, unsigned int, const unsigned char *, int, int);
1194 static int send_command_locked(unsigned short callno, char, int, unsigned int, const unsigned char *, int, int);
1195 static int send_command_transfer(struct chan_iax2_pvt *, char, int, unsigned int, const unsigned char *, int);
1196 static struct ast_channel *iax2_request(const char *type, struct ast_format_cap *cap, const struct ast_channel *requestor, void *data, int *cause);
1197 static struct ast_frame *iax2_read(struct ast_channel *c);
1198 static struct iax2_peer *build_peer(const char *name, struct ast_variable *v, struct ast_variable *alt, int temponly);
1199 static struct iax2_user *build_user(const char *name, struct ast_variable *v, struct ast_variable *alt, int temponly);
1200 static void realtime_update_peer(const char *peername, struct ast_sockaddr *sockaddr, time_t regtime);
1201 static void *iax2_dup_variable_datastore(void *);
1202 static void prune_peers(void);
1203 static void prune_users(void);
1204 static void iax2_free_variable_datastore(void *);
1206 static int acf_channel_read(struct ast_channel *chan, const char *funcname, char *preparse, char *buf, size_t buflen);
1207 static int decode_frame(ast_aes_decrypt_key *dcx, struct ast_iax2_full_hdr *fh, struct ast_frame *f, int *datalen);
1208 static int encrypt_frame(ast_aes_encrypt_key *ecx, struct ast_iax2_full_hdr *fh, unsigned char *poo, int *datalen);
1209 static void build_ecx_key(const unsigned char *digest, struct chan_iax2_pvt *pvt);
1210 static void build_rand_pad(unsigned char *buf, ssize_t len);
1211 static struct callno_entry *get_unused_callno(int trunk, int validated);
1212 static int replace_callno(const void *obj);
1213 static void sched_delay_remove(struct sockaddr_in *sin, struct callno_entry *callno_entry);
1214 static void network_change_event_cb(const struct ast_event *, void *);
1216 static struct ast_channel_tech iax2_tech = {
1218 .description = tdesc,
1219 .properties = AST_CHAN_TP_WANTSJITTER,
1220 .requester = iax2_request,
1221 .devicestate = iax2_devicestate,
1222 .send_digit_begin = iax2_digit_begin,
1223 .send_digit_end = iax2_digit_end,
1224 .send_text = iax2_sendtext,
1225 .send_image = iax2_sendimage,
1226 .send_html = iax2_sendhtml,
1228 .hangup = iax2_hangup,
1229 .answer = iax2_answer,
1231 .write = iax2_write,
1232 .write_video = iax2_write,
1233 .indicate = iax2_indicate,
1234 .setoption = iax2_setoption,
1235 .queryoption = iax2_queryoption,
1236 .bridge = iax2_bridge,
1237 .transfer = iax2_transfer,
1238 .fixup = iax2_fixup,
1239 .func_channel_read = acf_channel_read,
1244 * \brief Obtain the owner channel lock if the owner exists.
1246 * \param callno IAX2 call id.
1248 * \note Assumes the iaxsl[callno] lock is already obtained.
1251 * IMPORTANT NOTE!!! Any time this function is used, even if
1252 * iaxs[callno] was valid before calling it, it may no longer be
1253 * valid after calling it. This function may unlock and lock
1254 * the mutex associated with this callno, meaning that another
1255 * thread may grab it and destroy the call.
1259 static void iax2_lock_owner(int callno)
1262 if (!iaxs[callno] || !iaxs[callno]->owner) {
1263 /* There is no owner lock to get. */
1266 if (!ast_channel_trylock(iaxs[callno]->owner)) {
1267 /* We got the lock */
1270 /* Avoid deadlock by pausing and trying again */
1271 DEADLOCK_AVOIDANCE(&iaxsl[callno]);
1275 static void mwi_event_cb(const struct ast_event *event, void *userdata)
1277 /* The MWI subscriptions exist just so the core knows we care about those
1278 * mailboxes. However, we just grab the events out of the cache when it
1279 * is time to send MWI, since it is only sent with a REGACK. */
1282 static void network_change_event_subscribe(void)
1284 if (!network_change_event_subscription) {
1285 network_change_event_subscription = ast_event_subscribe(AST_EVENT_NETWORK_CHANGE,
1286 network_change_event_cb, "IAX2 Network Change", NULL, AST_EVENT_IE_END);
1290 static void network_change_event_unsubscribe(void)
1292 if (network_change_event_subscription) {
1293 network_change_event_subscription = ast_event_unsubscribe(network_change_event_subscription);
1297 static int network_change_event_sched_cb(const void *data)
1299 struct iax2_registry *reg;
1300 network_change_event_sched_id = -1;
1301 AST_LIST_LOCK(®istrations);
1302 AST_LIST_TRAVERSE(®istrations, reg, entry) {
1303 iax2_do_register(reg);
1305 AST_LIST_UNLOCK(®istrations);
1310 static void network_change_event_cb(const struct ast_event *event, void *userdata)
1312 ast_debug(1, "IAX, got a network change event, renewing all IAX registrations.\n");
1313 if (network_change_event_sched_id == -1) {
1314 network_change_event_sched_id = iax2_sched_add(sched, 1000, network_change_event_sched_cb, NULL);
1320 /*! \brief Send manager event at call setup to link between Asterisk channel name
1321 and IAX2 call identifiers */
1322 static void iax2_ami_channelupdate(struct chan_iax2_pvt *pvt)
1324 manager_event(EVENT_FLAG_SYSTEM, "ChannelUpdate",
1325 "Channel: %s\r\nChanneltype: IAX2\r\nIAX2-callno-local: %d\r\nIAX2-callno-remote: %d\r\nIAX2-peer: %s\r\n",
1326 pvt->owner ? pvt->owner->name : "",
1327 pvt->callno, pvt->peercallno, pvt->peer ? pvt->peer : "");
1330 static struct ast_datastore_info iax2_variable_datastore_info = {
1331 .type = "IAX2_VARIABLE",
1332 .duplicate = iax2_dup_variable_datastore,
1333 .destroy = iax2_free_variable_datastore,
1336 static void *iax2_dup_variable_datastore(void *old)
1338 AST_LIST_HEAD(, ast_var_t) *oldlist = old, *newlist;
1339 struct ast_var_t *oldvar, *newvar;
1341 newlist = ast_calloc(sizeof(*newlist), 1);
1343 ast_log(LOG_ERROR, "Unable to duplicate iax2 variables\n");
1347 AST_LIST_HEAD_INIT(newlist);
1348 AST_LIST_LOCK(oldlist);
1349 AST_LIST_TRAVERSE(oldlist, oldvar, entries) {
1350 newvar = ast_var_assign(ast_var_name(oldvar), ast_var_value(oldvar));
1352 AST_LIST_INSERT_TAIL(newlist, newvar, entries);
1354 ast_log(LOG_ERROR, "Unable to duplicate iax2 variable '%s'\n", ast_var_name(oldvar));
1356 AST_LIST_UNLOCK(oldlist);
1360 static void iax2_free_variable_datastore(void *old)
1362 AST_LIST_HEAD(, ast_var_t) *oldlist = old;
1363 struct ast_var_t *oldvar;
1365 AST_LIST_LOCK(oldlist);
1366 while ((oldvar = AST_LIST_REMOVE_HEAD(oldlist, entries))) {
1369 AST_LIST_UNLOCK(oldlist);
1370 AST_LIST_HEAD_DESTROY(oldlist);
1375 /* WARNING: insert_idle_thread should only ever be called within the
1376 * context of an iax2_process_thread() thread.
1378 static void insert_idle_thread(struct iax2_thread *thread)
1380 if (thread->type == IAX_THREAD_TYPE_DYNAMIC) {
1381 AST_LIST_LOCK(&dynamic_list);
1382 AST_LIST_INSERT_TAIL(&dynamic_list, thread, list);
1383 AST_LIST_UNLOCK(&dynamic_list);
1385 AST_LIST_LOCK(&idle_list);
1386 AST_LIST_INSERT_TAIL(&idle_list, thread, list);
1387 AST_LIST_UNLOCK(&idle_list);
1393 static struct iax2_thread *find_idle_thread(void)
1395 struct iax2_thread *thread = NULL;
1397 /* Pop the head of the idle list off */
1398 AST_LIST_LOCK(&idle_list);
1399 thread = AST_LIST_REMOVE_HEAD(&idle_list, list);
1400 AST_LIST_UNLOCK(&idle_list);
1402 /* If we popped a thread off the idle list, just return it */
1404 memset(&thread->ffinfo, 0, sizeof(thread->ffinfo));
1408 /* Pop the head of the dynamic list off */
1409 AST_LIST_LOCK(&dynamic_list);
1410 thread = AST_LIST_REMOVE_HEAD(&dynamic_list, list);
1411 AST_LIST_UNLOCK(&dynamic_list);
1413 /* If we popped a thread off the dynamic list, just return it */
1415 memset(&thread->ffinfo, 0, sizeof(thread->ffinfo));
1419 /* If we can't create a new dynamic thread for any reason, return no thread at all */
1420 if (iaxdynamicthreadcount >= iaxmaxthreadcount || !(thread = ast_calloc(1, sizeof(*thread))))
1423 /* Set default values */
1424 ast_atomic_fetchadd_int(&iaxdynamicthreadcount, 1);
1425 thread->threadnum = ast_atomic_fetchadd_int(&iaxdynamicthreadnum, 1);
1426 thread->type = IAX_THREAD_TYPE_DYNAMIC;
1428 /* Initialize lock and condition */
1429 ast_mutex_init(&thread->lock);
1430 ast_cond_init(&thread->cond, NULL);
1431 ast_mutex_init(&thread->init_lock);
1432 ast_cond_init(&thread->init_cond, NULL);
1433 ast_mutex_lock(&thread->init_lock);
1435 /* Create thread and send it on it's way */
1436 if (ast_pthread_create_background(&thread->threadid, NULL, iax2_process_thread, thread)) {
1437 ast_cond_destroy(&thread->cond);
1438 ast_mutex_destroy(&thread->lock);
1439 ast_mutex_unlock(&thread->init_lock);
1440 ast_cond_destroy(&thread->init_cond);
1441 ast_mutex_destroy(&thread->init_lock);
1446 /* this thread is not processing a full frame (since it is idle),
1447 so ensure that the field for the full frame call number is empty */
1448 memset(&thread->ffinfo, 0, sizeof(thread->ffinfo));
1450 /* Wait for the thread to be ready before returning it to the caller */
1451 ast_cond_wait(&thread->init_cond, &thread->init_lock);
1453 /* Done with init_lock */
1454 ast_mutex_unlock(&thread->init_lock);
1459 #ifdef SCHED_MULTITHREADED
1460 static int __schedule_action(void (*func)(const void *data), const void *data, const char *funcname)
1462 struct iax2_thread *thread = NULL;
1463 static time_t lasterror;
1466 thread = find_idle_thread();
1468 if (thread != NULL) {
1469 thread->schedfunc = func;
1470 thread->scheddata = data;
1471 thread->iostate = IAX_IOSTATE_SCHEDREADY;
1472 #ifdef DEBUG_SCHED_MULTITHREAD
1473 ast_copy_string(thread->curfunc, funcname, sizeof(thread->curfunc));
1475 signal_condition(&thread->lock, &thread->cond);
1480 ast_debug(1, "Out of idle IAX2 threads for scheduling!\n");
1485 #define schedule_action(func, data) __schedule_action(func, data, __PRETTY_FUNCTION__)
1488 static int iax2_sched_replace(int id, struct ast_sched_context *con, int when,
1489 ast_sched_cb callback, const void *data)
1491 return ast_sched_replace(id, con, when, callback, data);
1494 static int iax2_sched_add(struct ast_sched_context *con, int when,
1495 ast_sched_cb callback, const void *data)
1497 return ast_sched_add(con, when, callback, data);
1500 static int send_ping(const void *data);
1502 static void __send_ping(const void *data)
1504 int callno = (long) data;
1506 ast_mutex_lock(&iaxsl[callno]);
1509 if (iaxs[callno]->peercallno) {
1510 send_command(iaxs[callno], AST_FRAME_IAX, IAX_COMMAND_PING, 0, NULL, 0, -1);
1511 if (iaxs[callno]->pingid != DONT_RESCHEDULE) {
1512 iaxs[callno]->pingid = iax2_sched_add(sched, ping_time * 1000, send_ping, data);
1516 ast_debug(1, "I was supposed to send a PING with callno %d, but no such call exists.\n", callno);
1519 ast_mutex_unlock(&iaxsl[callno]);
1522 static int send_ping(const void *data)
1524 int callno = (long) data;
1525 ast_mutex_lock(&iaxsl[callno]);
1526 if (iaxs[callno] && iaxs[callno]->pingid != DONT_RESCHEDULE) {
1527 iaxs[callno]->pingid = -1;
1529 ast_mutex_unlock(&iaxsl[callno]);
1531 #ifdef SCHED_MULTITHREADED
1532 if (schedule_action(__send_ping, data))
1539 static void encmethods_to_str(int e, struct ast_str *buf)
1541 ast_str_set(&buf, 0, "(");
1542 if (e & IAX_ENCRYPT_AES128) {
1543 ast_str_append(&buf, 0, "aes128");
1545 if (e & IAX_ENCRYPT_KEYROTATE) {
1546 ast_str_append(&buf, 0, ",keyrotate");
1548 if (ast_str_strlen(buf) > 1) {
1549 ast_str_append(&buf, 0, ")");
1551 ast_str_set(&buf, 0, "No");
1555 static int get_encrypt_methods(const char *s)
1558 if (!strcasecmp(s, "aes128"))
1559 e = IAX_ENCRYPT_AES128 | IAX_ENCRYPT_KEYROTATE;
1560 else if (ast_true(s))
1561 e = IAX_ENCRYPT_AES128 | IAX_ENCRYPT_KEYROTATE;
1567 static int send_lagrq(const void *data);
1569 static void __send_lagrq(const void *data)
1571 int callno = (long) data;
1573 ast_mutex_lock(&iaxsl[callno]);
1576 if (iaxs[callno]->peercallno) {
1577 send_command(iaxs[callno], AST_FRAME_IAX, IAX_COMMAND_LAGRQ, 0, NULL, 0, -1);
1578 if (iaxs[callno]->lagid != DONT_RESCHEDULE) {
1579 iaxs[callno]->lagid = iax2_sched_add(sched, lagrq_time * 1000, send_lagrq, data);
1583 ast_debug(1, "I was supposed to send a LAGRQ with callno %d, but no such call exists.\n", callno);
1586 ast_mutex_unlock(&iaxsl[callno]);
1589 static int send_lagrq(const void *data)
1591 int callno = (long) data;
1592 ast_mutex_lock(&iaxsl[callno]);
1593 if (iaxs[callno] && iaxs[callno]->lagid != DONT_RESCHEDULE) {
1594 iaxs[callno]->lagid = -1;
1596 ast_mutex_unlock(&iaxsl[callno]);
1598 #ifdef SCHED_MULTITHREADED
1599 if (schedule_action(__send_lagrq, data))
1605 static unsigned char compress_subclass(iax2_format subclass)
1609 /* If it's 64 or smaller, just return it */
1610 if (subclass < IAX_FLAG_SC_LOG)
1612 /* Otherwise find its power */
1613 for (x = 0; x < IAX_MAX_SHIFT; x++) {
1614 if (subclass & (1LL << x)) {
1616 ast_log(LOG_WARNING, "Can't compress subclass %lld\n", (long long) subclass);
1622 return power | IAX_FLAG_SC_LOG;
1625 static iax2_format uncompress_subclass(unsigned char csub)
1627 /* If the SC_LOG flag is set, return 2^csub otherwise csub */
1628 if (csub & IAX_FLAG_SC_LOG) {
1629 /* special case for 'compressed' -1 */
1633 return 1LL << (csub & ~IAX_FLAG_SC_LOG & IAX_MAX_SHIFT);
1639 static iax2_format iax2_codec_choose(struct ast_codec_pref *pref, iax2_format formats, int find_best)
1641 struct ast_format_cap *cap;
1642 struct ast_format tmpfmt;
1643 iax2_format format = 0;
1644 if ((cap = ast_format_cap_alloc_nolock())) {
1645 ast_format_clear(&tmpfmt);
1646 ast_format_cap_from_old_bitfield(cap, formats);
1647 ast_codec_choose(pref, cap, find_best, &tmpfmt);
1648 format = ast_format_to_old_bitfield(&tmpfmt);
1649 cap = ast_format_cap_destroy(cap);
1655 static iax2_format iax2_best_codec(iax2_format formats)
1657 struct ast_format_cap *cap = ast_format_cap_alloc_nolock();
1658 struct ast_format tmpfmt;
1663 ast_format_clear(&tmpfmt);
1664 ast_format_cap_from_old_bitfield(cap, formats);
1665 ast_best_codec(cap, &tmpfmt);
1666 cap = ast_format_cap_destroy(cap);
1667 return ast_format_to_old_bitfield(&tmpfmt);
1670 const char *iax2_getformatname(iax2_format format)
1672 struct ast_format tmpfmt;
1673 if (!(ast_format_from_old_bitfield(&tmpfmt, format))) {
1677 return ast_getformatname(&tmpfmt);
1680 static char *iax2_getformatname_multiple(char *codec_buf, size_t len, iax2_format format)
1682 struct ast_format_cap *cap = ast_format_cap_alloc_nolock();
1687 ast_format_cap_from_old_bitfield(cap, format);
1688 ast_getformatname_multiple(codec_buf, len, cap);
1689 cap = ast_format_cap_destroy(cap);
1694 static int iax2_parse_allow_disallow(struct ast_codec_pref *pref, iax2_format *formats, const char *list, int allowing)
1697 struct ast_format_cap *cap = ast_format_cap_alloc_nolock();
1702 ast_format_cap_from_old_bitfield(cap, *formats);
1703 res = ast_parse_allow_disallow(pref, cap, list, allowing);
1704 *formats = ast_format_cap_to_old_bitfield(cap);
1705 cap = ast_format_cap_destroy(cap);
1710 static int iax2_data_add_codecs(struct ast_data *root, const char *node_name, iax2_format formats)
1713 struct ast_format_cap *cap = ast_format_cap_alloc_nolock();
1717 ast_format_cap_from_old_bitfield(cap, formats);
1718 res = ast_data_add_codecs(root, node_name, cap);
1719 cap = ast_format_cap_destroy(cap);
1724 * \note The only member of the peer passed here guaranteed to be set is the name field
1726 static int peer_hash_cb(const void *obj, const int flags)
1728 const struct iax2_peer *peer = obj;
1729 const char *name = obj;
1731 return ast_str_hash(flags & OBJ_KEY ? name : peer->name);
1735 * \note The only member of the peer passed here guaranteed to be set is the name field
1737 static int peer_cmp_cb(void *obj, void *arg, int flags)
1739 struct iax2_peer *peer = obj, *peer2 = arg;
1740 const char *name = arg;
1742 return !strcmp(peer->name, flags & OBJ_KEY ? name : peer2->name) ?
1743 CMP_MATCH | CMP_STOP : 0;
1747 * \note The only member of the user passed here guaranteed to be set is the name field
1749 static int user_hash_cb(const void *obj, const int flags)
1751 const struct iax2_user *user = obj;
1752 const char *name = obj;
1754 return ast_str_hash(flags & OBJ_KEY ? name : user->name);
1758 * \note The only member of the user passed here guaranteed to be set is the name field
1760 static int user_cmp_cb(void *obj, void *arg, int flags)
1762 struct iax2_user *user = obj, *user2 = arg;
1763 const char *name = arg;
1765 return !strcmp(user->name, flags & OBJ_KEY ? name : user2->name) ?
1766 CMP_MATCH | CMP_STOP : 0;
1770 * \note This funtion calls realtime_peer -> reg_source_db -> iax2_poke_peer -> find_callno,
1771 * so do not call it with a pvt lock held.
1773 static struct iax2_peer *find_peer(const char *name, int realtime)
1775 struct iax2_peer *peer = NULL;
1777 peer = ao2_find(peers, name, OBJ_KEY);
1779 /* Now go for realtime if applicable */
1780 if(!peer && realtime)
1781 peer = realtime_peer(name, NULL);
1786 static struct iax2_peer *peer_ref(struct iax2_peer *peer)
1792 static inline struct iax2_peer *peer_unref(struct iax2_peer *peer)
1798 static struct iax2_user *find_user(const char *name)
1800 return ao2_find(users, name, OBJ_KEY);
1802 static inline struct iax2_user *user_ref(struct iax2_user *user)
1808 static inline struct iax2_user *user_unref(struct iax2_user *user)
1814 static int iax2_getpeername(struct sockaddr_in sin, char *host, int len)
1816 struct iax2_peer *peer = NULL;
1818 struct ao2_iterator i;
1820 i = ao2_iterator_init(peers, 0);
1821 while ((peer = ao2_iterator_next(&i))) {
1822 struct sockaddr_in peer_addr;
1824 ast_sockaddr_to_sin(&peer->addr, &peer_addr);
1826 if ((peer_addr.sin_addr.s_addr == sin.sin_addr.s_addr) &&
1827 (peer_addr.sin_port == sin.sin_port)) {
1828 ast_copy_string(host, peer->name, len);
1835 ao2_iterator_destroy(&i);
1838 peer = realtime_peer(NULL, &sin);
1840 ast_copy_string(host, peer->name, len);
1849 /*!\note Assumes the lock on the pvt is already held, when
1850 * iax2_destroy_helper() is called. */
1851 static void iax2_destroy_helper(struct chan_iax2_pvt *pvt)
1853 /* Decrement AUTHREQ count if needed */
1854 if (ast_test_flag64(pvt, IAX_MAXAUTHREQ)) {
1855 struct iax2_user *user;
1857 user = ao2_find(users, pvt->username, OBJ_KEY);
1859 ast_atomic_fetchadd_int(&user->curauthreq, -1);
1863 ast_clear_flag64(pvt, IAX_MAXAUTHREQ);
1865 /* No more pings or lagrq's */
1866 AST_SCHED_DEL_SPINLOCK(sched, pvt->pingid, &iaxsl[pvt->callno]);
1867 pvt->pingid = DONT_RESCHEDULE;
1868 AST_SCHED_DEL_SPINLOCK(sched, pvt->lagid, &iaxsl[pvt->callno]);
1869 pvt->lagid = DONT_RESCHEDULE;
1870 AST_SCHED_DEL(sched, pvt->autoid);
1871 AST_SCHED_DEL(sched, pvt->authid);
1872 AST_SCHED_DEL(sched, pvt->initid);
1873 AST_SCHED_DEL(sched, pvt->jbid);
1874 AST_SCHED_DEL(sched, pvt->keyrotateid);
1877 static void iax2_frame_free(struct iax_frame *fr)
1879 AST_SCHED_DEL(sched, fr->retrans);
1883 static int scheduled_destroy(const void *vid)
1885 unsigned short callno = PTR_TO_CALLNO(vid);
1886 ast_mutex_lock(&iaxsl[callno]);
1888 ast_debug(1, "Really destroying %d now...\n", callno);
1889 iax2_destroy(callno);
1891 ast_mutex_unlock(&iaxsl[callno]);
1895 static void free_signaling_queue_entry(struct signaling_queue_entry *s)
1898 ast_free(s->f.data.ptr);
1903 /*! \brief This function must be called once we are sure the other side has
1904 * given us a call number. All signaling is held here until that point. */
1905 static void send_signaling(struct chan_iax2_pvt *pvt)
1907 struct signaling_queue_entry *s = NULL;
1909 while ((s = AST_LIST_REMOVE_HEAD(&pvt->signaling_queue, next))) {
1910 iax2_send(pvt, &s->f, 0, -1, 0, 0, 0);
1911 free_signaling_queue_entry(s);
1913 pvt->hold_signaling = 0;
1916 /*! \brief All frames other than that of type AST_FRAME_IAX must be held until
1917 * we have received a destination call number. */
1918 static int queue_signalling(struct chan_iax2_pvt *pvt, struct ast_frame *f)
1920 struct signaling_queue_entry *new;
1922 if (f->frametype == AST_FRAME_IAX || !pvt->hold_signaling) {
1923 return 1; /* do not queue this frame */
1924 } else if (!(new = ast_calloc(1, sizeof(struct signaling_queue_entry)))) {
1925 return -1; /* out of memory */
1928 memcpy(&new->f, f, sizeof(new->f)); /* copy ast_frame into our queue entry */
1930 if (new->f.datalen) { /* if there is data in this frame copy it over as well */
1931 if (!(new->f.data.ptr = ast_calloc(1, new->f.datalen))) {
1932 free_signaling_queue_entry(new);
1935 memcpy(new->f.data.ptr, f->data.ptr, sizeof(*new->f.data.ptr));
1937 AST_LIST_INSERT_TAIL(&pvt->signaling_queue, new, next);
1942 static void pvt_destructor(void *obj)
1944 struct chan_iax2_pvt *pvt = obj;
1945 struct iax_frame *cur = NULL;
1946 struct signaling_queue_entry *s = NULL;
1948 ast_mutex_lock(&iaxsl[pvt->callno]);
1950 iax2_destroy_helper(pvt);
1952 sched_delay_remove(&pvt->addr, pvt->callno_entry);
1953 pvt->callno_entry = NULL;
1956 ast_set_flag64(pvt, IAX_ALREADYGONE);
1958 AST_LIST_TRAVERSE(&frame_queue[pvt->callno], cur, list) {
1959 /* Cancel any pending transmissions */
1963 ast_mutex_unlock(&iaxsl[pvt->callno]);
1965 while ((s = AST_LIST_REMOVE_HEAD(&pvt->signaling_queue, next))) {
1966 free_signaling_queue_entry(s);
1970 pvt->reg->callno = 0;
1976 ast_variables_destroy(pvt->vars);
1980 while (jb_getall(pvt->jb, &frame) == JB_OK) {
1981 iax2_frame_free(frame.data);
1984 jb_destroy(pvt->jb);
1985 ast_string_field_free_memory(pvt);
1989 static struct chan_iax2_pvt *new_iax(struct sockaddr_in *sin, const char *host)
1991 struct chan_iax2_pvt *tmp;
1994 if (!(tmp = ao2_alloc(sizeof(*tmp), pvt_destructor))) {
1998 if (ast_string_field_init(tmp, 32)) {
2010 tmp->keyrotateid = -1;
2012 ast_string_field_set(tmp,exten, "s");
2013 ast_string_field_set(tmp,host, host);
2017 jbconf.max_jitterbuf = maxjitterbuffer;
2018 jbconf.resync_threshold = resyncthreshold;
2019 jbconf.max_contig_interp = maxjitterinterps;
2020 jbconf.target_extra = jittertargetextra;
2021 jb_setconf(tmp->jb,&jbconf);
2023 AST_LIST_HEAD_INIT_NOLOCK(&tmp->dpentries);
2025 tmp->hold_signaling = 1;
2026 AST_LIST_HEAD_INIT_NOLOCK(&tmp->signaling_queue);
2031 static struct iax_frame *iaxfrdup2(struct iax_frame *fr)
2033 struct iax_frame *new = iax_frame_new(DIRECTION_INGRESS, fr->af.datalen, fr->cacheable);
2035 size_t afdatalen = new->afdatalen;
2036 memcpy(new, fr, sizeof(*new));
2037 iax_frame_wrap(new, &fr->af);
2038 new->afdatalen = afdatalen;
2041 new->direction = DIRECTION_INGRESS;
2046 /* keep these defined in this order. They are used in find_callno to
2047 * determine whether or not a new call number should be allowed. */
2049 /* do not allow a new call number, only search ones in use for match */
2051 /* search for match first, then allow a new one to be allocated */
2053 /* do not search for match, force a new call number */
2055 /* do not search for match, force a new call number. Signifies call number
2056 * has been calltoken validated */
2057 NEW_ALLOW_CALLTOKEN_VALIDATED = 3,
2060 static int match(struct sockaddr_in *sin, unsigned short callno, unsigned short dcallno, const struct chan_iax2_pvt *cur, int check_dcallno)
2062 if ((cur->addr.sin_addr.s_addr == sin->sin_addr.s_addr) &&
2063 (cur->addr.sin_port == sin->sin_port)) {
2064 /* This is the main host */
2065 if ( (cur->peercallno == 0 || cur->peercallno == callno) &&
2066 (check_dcallno ? dcallno == cur->callno : 1) ) {
2067 /* That's us. Be sure we keep track of the peer call number */
2071 if ((cur->transfer.sin_addr.s_addr == sin->sin_addr.s_addr) &&
2072 (cur->transfer.sin_port == sin->sin_port) && (cur->transferring)) {
2073 /* We're transferring */
2074 if ((dcallno == cur->callno) || (cur->transferring == TRANSFER_MEDIAPASS && cur->transfercallno == callno))
2080 static void update_max_trunk(void)
2082 int max = TRUNK_CALL_START;
2085 /* XXX Prolly don't need locks here XXX */
2086 for (x = TRUNK_CALL_START; x < ARRAY_LEN(iaxs) - 1; x++) {
2094 ast_debug(1, "New max trunk callno is %d\n", max);
2097 static void update_max_nontrunk(void)
2101 /* XXX Prolly don't need locks here XXX */
2102 for (x=1;x<TRUNK_CALL_START - 1; x++) {
2106 maxnontrunkcall = max;
2108 ast_debug(1, "New max nontrunk callno is %d\n", max);
2111 static int make_trunk(unsigned short callno, int locked)
2115 struct callno_entry *callno_entry;
2116 if (iaxs[callno]->oseqno) {
2117 ast_log(LOG_WARNING, "Can't make trunk once a call has started!\n");
2120 if (callno & TRUNK_CALL_START) {
2121 ast_log(LOG_WARNING, "Call %d is already a trunk\n", callno);
2125 if (!(callno_entry = get_unused_callno(1, iaxs[callno]->callno_entry->validated))) {
2126 ast_log(LOG_WARNING, "Unable to trunk call: Insufficient space\n");
2130 x = callno_entry->callno;
2131 ast_mutex_lock(&iaxsl[x]);
2134 * \note We delete these before switching the slot, because if
2135 * they fire in the meantime, they will generate a warning.
2137 AST_SCHED_DEL(sched, iaxs[callno]->pingid);
2138 AST_SCHED_DEL(sched, iaxs[callno]->lagid);
2139 iaxs[callno]->lagid = iaxs[callno]->pingid = -1;
2140 iaxs[x] = iaxs[callno];
2141 iaxs[x]->callno = x;
2143 /* since we copied over the pvt from a different callno, make sure the old entry is replaced
2144 * before assigning the new one */
2145 if (iaxs[x]->callno_entry) {
2146 iax2_sched_add(sched, MIN_REUSE_TIME * 1000, replace_callno, iaxs[x]->callno_entry);
2148 iaxs[x]->callno_entry = callno_entry;
2150 iaxs[callno] = NULL;
2151 /* Update the two timers that should have been started */
2152 iaxs[x]->pingid = iax2_sched_add(sched,
2153 ping_time * 1000, send_ping, (void *)(long)x);
2154 iaxs[x]->lagid = iax2_sched_add(sched,
2155 lagrq_time * 1000, send_lagrq, (void *)(long)x);
2158 ast_mutex_unlock(&iaxsl[callno]);
2161 ast_mutex_unlock(&iaxsl[x]);
2163 ast_debug(1, "Made call %d into trunk call %d\n", callno, x);
2164 /* We move this call from a non-trunked to a trunked call */
2166 update_max_nontrunk();
2170 static void store_by_transfercallno(struct chan_iax2_pvt *pvt)
2172 if (!pvt->transfercallno) {
2173 ast_log(LOG_ERROR, "This should not be called without a transfer call number.\n");
2177 ao2_link(iax_transfercallno_pvts, pvt);
2180 static void remove_by_transfercallno(struct chan_iax2_pvt *pvt)
2182 if (!pvt->transfercallno) {
2183 ast_log(LOG_ERROR, "This should not be called without a transfer call number.\n");
2187 ao2_unlink(iax_transfercallno_pvts, pvt);
2189 static void store_by_peercallno(struct chan_iax2_pvt *pvt)
2191 if (!pvt->peercallno) {
2192 ast_log(LOG_ERROR, "This should not be called without a peer call number.\n");
2196 ao2_link(iax_peercallno_pvts, pvt);
2199 static void remove_by_peercallno(struct chan_iax2_pvt *pvt)
2201 if (!pvt->peercallno) {
2202 ast_log(LOG_ERROR, "This should not be called without a peer call number.\n");
2206 ao2_unlink(iax_peercallno_pvts, pvt);
2209 static int addr_range_delme_cb(void *obj, void *arg, int flags)
2211 struct addr_range *lim = obj;
2216 static int addr_range_hash_cb(const void *obj, const int flags)
2218 const struct addr_range *lim = obj;
2219 struct sockaddr_in sin;
2220 ast_sockaddr_to_sin(&lim->ha.addr, &sin);
2221 return abs((int) sin.sin_addr.s_addr);
2224 static int addr_range_cmp_cb(void *obj, void *arg, int flags)
2226 struct addr_range *lim1 = obj, *lim2 = arg;
2227 return (!(ast_sockaddr_cmp_addr(&lim1->ha.addr, &lim2->ha.addr)) &&
2228 !(ast_sockaddr_cmp_addr(&lim1->ha.netmask, &lim2->ha.netmask))) ?
2229 CMP_MATCH | CMP_STOP : 0;
2232 static int peercnt_hash_cb(const void *obj, const int flags)
2234 const struct peercnt *peercnt = obj;
2235 return abs((int) peercnt->addr);
2238 static int peercnt_cmp_cb(void *obj, void *arg, int flags)
2240 struct peercnt *peercnt1 = obj, *peercnt2 = arg;
2241 return (peercnt1->addr == peercnt2->addr) ? CMP_MATCH | CMP_STOP : 0;
2244 static int addr_range_match_address_cb(void *obj, void *arg, int flags)
2246 struct addr_range *addr_range = obj;
2247 struct sockaddr_in *sin = arg;
2248 struct sockaddr_in ha_netmask_sin;
2249 struct sockaddr_in ha_addr_sin;
2251 ast_sockaddr_to_sin(&addr_range->ha.netmask, &ha_netmask_sin);
2252 ast_sockaddr_to_sin(&addr_range->ha.addr, &ha_addr_sin);
2254 if ((sin->sin_addr.s_addr & ha_netmask_sin.sin_addr.s_addr) == ha_addr_sin.sin_addr.s_addr) {
2255 return CMP_MATCH | CMP_STOP;
2263 * \brief compares sin to calltoken_ignores table to determine if validation is required.
2265 static int calltoken_required(struct sockaddr_in *sin, const char *name, int subclass)
2267 struct addr_range *addr_range;
2268 struct iax2_peer *peer = NULL;
2269 struct iax2_user *user = NULL;
2270 /* if no username is given, check for guest accounts */
2271 const char *find = S_OR(name, "guest");
2272 int res = 1; /* required by default */
2274 enum calltoken_peer_enum calltoken_required = CALLTOKEN_DEFAULT;
2275 /* There are only two cases in which calltoken validation is not required.
2276 * Case 1. sin falls within the list of address ranges specified in the calltoken optional table and
2277 * the peer definition has not set the requirecalltoken option.
2278 * Case 2. Username is a valid peer/user, and that peer has requirecalltoken set either auto or no.
2281 /* ----- Case 1 ----- */
2282 if ((addr_range = ao2_callback(calltoken_ignores, 0, addr_range_match_address_cb, sin))) {
2283 ao2_ref(addr_range, -1);
2287 /* ----- Case 2 ----- */
2288 if ((subclass == IAX_COMMAND_NEW) && (user = find_user(find))) {
2289 calltoken_required = user->calltoken_required;
2290 } else if ((subclass == IAX_COMMAND_NEW) && (user = realtime_user(find, sin))) {
2291 calltoken_required = user->calltoken_required;
2292 } else if ((subclass != IAX_COMMAND_NEW) && (peer = find_peer(find, 0))) {
2293 calltoken_required = peer->calltoken_required;
2294 } else if ((subclass != IAX_COMMAND_NEW) && (peer = realtime_peer(find, sin))) {
2295 calltoken_required = peer->calltoken_required;
2305 ast_debug(1, "Determining if address %s with username %s requires calltoken validation. Optional = %d calltoken_required = %d \n", ast_inet_ntoa(sin->sin_addr), name, optional, calltoken_required);
2306 if (((calltoken_required == CALLTOKEN_NO) || (calltoken_required == CALLTOKEN_AUTO)) ||
2307 (optional && (calltoken_required == CALLTOKEN_DEFAULT))) {
2317 * \brief set peercnt callno limit.
2320 * First looks in custom definitions. If not found, global limit
2321 * is used. Entries marked as reg already have
2322 * a custom limit set by a registration and are not modified.
2324 static void set_peercnt_limit(struct peercnt *peercnt)
2326 uint16_t limit = global_maxcallno;
2327 struct addr_range *addr_range;
2328 struct sockaddr_in sin = {
2329 .sin_addr.s_addr = peercnt->addr,
2333 if (peercnt->reg && peercnt->limit) {
2334 return; /* this peercnt has a custom limit set by a registration */
2337 if ((addr_range = ao2_callback(callno_limits, 0, addr_range_match_address_cb, &sin))) {
2338 limit = addr_range->limit;
2339 ast_debug(1, "custom addr_range %d found for %s\n", limit, ast_inet_ntoa(sin.sin_addr));
2340 ao2_ref(addr_range, -1);
2343 peercnt->limit = limit;
2348 * \brief sets limits for all peercnts in table. done on reload to reflect changes in conf.
2350 static int set_peercnt_limit_all_cb(void *obj, void *arg, int flags)
2352 struct peercnt *peercnt = obj;
2354 set_peercnt_limit(peercnt);
2355 ast_debug(1, "Reset limits for peercnts table\n");
2362 * \brief returns match if delme is set.
2364 static int prune_addr_range_cb(void *obj, void *arg, int flags)
2366 struct addr_range *addr_range = obj;
2368 return addr_range->delme ? CMP_MATCH : 0;
2373 * \brief modifies peercnt entry in peercnts table. Used to set custom limit or mark a registered ip
2375 static void peercnt_modify(unsigned char reg, uint16_t limit, struct ast_sockaddr *sockaddr)
2377 /* this function turns off and on custom callno limits set by peer registration */
2378 struct peercnt *peercnt;
2379 struct peercnt tmp = {
2382 struct sockaddr_in sin;
2384 ast_sockaddr_to_sin(sockaddr, &sin);
2386 tmp.addr = sin.sin_addr.s_addr;
2388 if ((peercnt = ao2_find(peercnts, &tmp, OBJ_POINTER))) {
2391 peercnt->limit = limit;
2393 set_peercnt_limit(peercnt);
2395 ast_debug(1, "peercnt entry %s modified limit:%d registered:%d", ast_inet_ntoa(sin.sin_addr), peercnt->limit, peercnt->reg);
2396 ao2_ref(peercnt, -1); /* decrement ref from find */
2402 * \brief adds an ip to the peercnts table, increments connection count if it already exists
2404 * \details First searches for the address in the peercnts table. If found
2405 * the current count is incremented. If not found a new peercnt is allocated
2406 * and linked into the peercnts table with a call number count of 1.
2408 static int peercnt_add(struct sockaddr_in *sin)
2410 struct peercnt *peercnt;
2411 unsigned long addr = sin->sin_addr.s_addr;
2413 struct peercnt tmp = {
2417 /* Reasoning for peercnts container lock: Two identical ip addresses
2418 * could be added by different threads at the "same time". Without the container
2419 * lock, both threads could alloc space for the same object and attempt
2420 * to link to table. With the lock, one would create the object and link
2421 * to table while the other would find the already created peercnt object
2422 * rather than creating a new one. */
2424 if ((peercnt = ao2_find(peercnts, &tmp, OBJ_POINTER))) {
2426 } else if ((peercnt = ao2_alloc(sizeof(*peercnt), NULL))) {
2428 /* create and set defaults */
2429 peercnt->addr = addr;
2430 set_peercnt_limit(peercnt);
2431 /* guarantees it does not go away after unlocking table
2432 * ao2_find automatically adds this */
2433 ao2_link(peercnts, peercnt);
2435 ao2_unlock(peercnts);
2439 /* check to see if the address has hit its callno limit. If not increment cur. */
2440 if (peercnt->limit > peercnt->cur) {
2442 ast_debug(1, "ip callno count incremented to %d for %s\n", peercnt->cur, ast_inet_ntoa(sin->sin_addr));
2443 } else { /* max num call numbers for this peer has been reached! */
2444 ast_log(LOG_ERROR, "maxcallnumber limit of %d for %s has been reached!\n", peercnt->limit, ast_inet_ntoa(sin->sin_addr));
2448 /* clean up locks and ref count */
2449 ao2_unlock(peercnt);
2450 ao2_unlock(peercnts);
2451 ao2_ref(peercnt, -1); /* decrement ref from find/alloc, only the container ref remains. */
2458 * \brief decrements a peercnts table entry
2460 static void peercnt_remove(struct peercnt *peercnt)
2462 struct sockaddr_in sin = {
2463 .sin_addr.s_addr = peercnt->addr,
2467 /* Container locked here since peercnt may be unlinked from list. If left unlocked,
2468 * peercnt_add could try and grab this entry from the table and modify it at the
2469 * "same time" this thread attemps to unlink it.*/
2472 ast_debug(1, "ip callno count decremented to %d for %s\n", peercnt->cur, ast_inet_ntoa(sin.sin_addr));
2473 /* if this was the last connection from the peer remove it from table */
2474 if (peercnt->cur == 0) {
2475 ao2_unlink(peercnts, peercnt);/* decrements ref from table, last ref is left to scheduler */
2477 ao2_unlock(peercnts);
2483 * \brief called by scheduler to decrement object
2485 static int peercnt_remove_cb(const void *obj)
2487 struct peercnt *peercnt = (struct peercnt *) obj;
2489 peercnt_remove(peercnt);
2490 ao2_ref(peercnt, -1); /* decrement ref from scheduler */
2497 * \brief decrements peercnts connection count, finds by addr
2499 static int peercnt_remove_by_addr(struct sockaddr_in *sin)
2501 struct peercnt *peercnt;
2502 struct peercnt tmp = {
2503 .addr = sin->sin_addr.s_addr,
2506 if ((peercnt = ao2_find(peercnts, &tmp, OBJ_POINTER))) {
2507 peercnt_remove(peercnt);
2508 ao2_ref(peercnt, -1); /* decrement ref from find */
2515 * \brief Create callno_limit entry based on configuration
2517 static void build_callno_limits(struct ast_variable *v)
2519 struct addr_range *addr_range = NULL;
2520 struct addr_range tmp;
2526 for (; v; v = v->next) {
2530 ha = ast_append_ha("permit", v->name, NULL, &error);
2532 /* check for valid config information */
2534 ast_log(LOG_ERROR, "Call number limit for %s could not be added, Invalid address range\n.", v->name);
2536 } else if ((sscanf(v->value, "%d", &limit) != 1) || (limit < 0)) {
2537 ast_log(LOG_ERROR, "Call number limit for %s could not be added. Invalid limit %s\n.", v->name, v->value);
2542 ast_copy_ha(ha, &tmp.ha);
2543 /* find or create the addr_range */
2544 if ((addr_range = ao2_find(callno_limits, &tmp, OBJ_POINTER))) {
2545 ao2_lock(addr_range);
2547 } else if (!(addr_range = ao2_alloc(sizeof(*addr_range), NULL))) {
2549 return; /* out of memory */
2552 /* copy over config data into addr_range object */
2553 ast_copy_ha(ha, &addr_range->ha); /* this is safe because only one ha is possible for each limit */
2554 ast_free_ha(ha); /* cleanup the tmp ha */
2555 addr_range->limit = limit;
2556 addr_range->delme = 0;
2560 ao2_unlock(addr_range);
2562 ao2_link(callno_limits, addr_range);
2564 ao2_ref(addr_range, -1); /* decrement ref from ao2_find and ao2_alloc, only container ref remains */
2570 * \brief Create calltoken_ignores entry based on configuration
2572 static int add_calltoken_ignore(const char *addr)
2574 struct addr_range tmp;
2575 struct addr_range *addr_range = NULL;
2576 struct ast_ha *ha = NULL;
2579 if (ast_strlen_zero(addr)) {
2580 ast_log(LOG_WARNING, "invalid calltokenoptional %s\n", addr);
2584 ha = ast_append_ha("permit", addr, NULL, &error);
2586 /* check for valid config information */
2588 ast_log(LOG_WARNING, "Error %d creating calltokenoptional entry %s\n", error, addr);
2592 ast_copy_ha(ha, &tmp.ha);
2593 /* find or create the addr_range */
2594 if ((addr_range = ao2_find(calltoken_ignores, &tmp, OBJ_POINTER))) {
2595 ao2_lock(addr_range);
2596 addr_range->delme = 0;
2597 ao2_unlock(addr_range);
2598 } else if ((addr_range = ao2_alloc(sizeof(*addr_range), NULL))) {
2599 /* copy over config data into addr_range object */
2600 ast_copy_ha(ha, &addr_range->ha); /* this is safe because only one ha is possible */
2601 ao2_link(calltoken_ignores, addr_range);
2608 ao2_ref(addr_range, -1); /* decrement ref from ao2_find and ao2_alloc, only container ref remains */
2613 static char *handle_cli_iax2_show_callno_limits(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
2615 struct ao2_iterator i;
2616 struct peercnt *peercnt;
2617 struct sockaddr_in sin;
2622 e->command = "iax2 show callnumber usage";
2624 "Usage: iax2 show callnumber usage [IP address]\n"
2625 " Shows current IP addresses which are consuming iax2 call numbers\n";
2630 if (a->argc < 4 || a->argc > 5)
2631 return CLI_SHOWUSAGE;
2633 ast_cli(a->fd, "%-15s %-12s %-12s\n", "Address", "Callno Usage", "Callno Limit");
2634 i = ao2_iterator_init(peercnts, 0);
2635 while ((peercnt = ao2_iterator_next(&i))) {
2636 sin.sin_addr.s_addr = peercnt->addr;
2637 if (a->argc == 5 && (!strcasecmp(a->argv[4], ast_inet_ntoa(sin.sin_addr)))) {
2638 ast_cli(a->fd, "%-15s %-12d %-12d\n", ast_inet_ntoa(sin.sin_addr), peercnt->cur, peercnt->limit);
2642 ast_cli(a->fd, "%-15s %-12d %-12d\n", ast_inet_ntoa(sin.sin_addr), peercnt->cur, peercnt->limit);
2644 ao2_ref(peercnt, -1);
2646 ao2_iterator_destroy(&i);
2649 ast_cli(a->fd, "\nNon-CallToken Validation Callno Limit: %d\n"
2650 "Non-CallToken Validated Callno Used: %d\n",
2651 global_maxcallno_nonval,
2652 total_nonval_callno_used);
2654 ast_cli(a->fd, "Total Available Callno: %d\n"
2655 "Regular Callno Available: %d\n"
2656 "Trunk Callno Available: %d\n",
2657 ao2_container_count(callno_pool) + ao2_container_count(callno_pool_trunk),
2658 ao2_container_count(callno_pool),
2659 ao2_container_count(callno_pool_trunk));
2660 } else if (a->argc == 5 && !found) {
2661 ast_cli(a->fd, "No callnumber table entries for %s found\n", a->argv[4] );
2671 static struct callno_entry *get_unused_callno(int trunk, int validated)
2673 struct callno_entry *callno_entry = NULL;
2674 if ((!ao2_container_count(callno_pool) && !trunk) || (!ao2_container_count(callno_pool_trunk) && trunk)) {
2675 ast_log(LOG_WARNING, "Out of CallNumbers\n");
2676 /* Minor optimization for the extreme case. */
2680 /* the callno_pool container is locked here primarily to ensure thread
2681 * safety of the total_nonval_callno_used check and increment */
2682 ao2_lock(callno_pool);
2684 /* only a certain number of nonvalidated call numbers should be allocated.
2685 * If there ever is an attack, this separates the calltoken validating
2686 * users from the non calltoken validating users. */
2687 if (!validated && (total_nonval_callno_used >= global_maxcallno_nonval)) {
2688 ast_log(LOG_WARNING, "NON-CallToken callnumber limit is reached. Current:%d Max:%d\n", total_nonval_callno_used, global_maxcallno_nonval);
2689 ao2_unlock(callno_pool);
2693 /* unlink the object from the container, taking over ownership
2694 * of the reference the container had to the object */
2695 callno_entry = ao2_find((trunk ? callno_pool_trunk : callno_pool), NULL, OBJ_POINTER | OBJ_UNLINK | OBJ_CONTINUE);
2698 callno_entry->validated = validated;
2700 total_nonval_callno_used++;
2704 ao2_unlock(callno_pool);
2705 return callno_entry;
2708 static int replace_callno(const void *obj)
2710 struct callno_entry *callno_entry = (struct callno_entry *) obj;
2712 /* the callno_pool container is locked here primarily to ensure thread
2713 * safety of the total_nonval_callno_used check and decrement */
2714 ao2_lock(callno_pool);
2716 if (!callno_entry->validated && (total_nonval_callno_used != 0)) {
2717 total_nonval_callno_used--;
2718 } else if (!callno_entry->validated && (total_nonval_callno_used == 0)) {
2719 ast_log(LOG_ERROR, "Attempted to decrement total non calltoken validated callnumbers below zero... Callno is:%d \n", callno_entry->callno);
2722 if (callno_entry->callno < TRUNK_CALL_START) {
2723 ao2_link(callno_pool, callno_entry);
2725 ao2_link(callno_pool_trunk, callno_entry);
2727 ao2_ref(callno_entry, -1); /* only container ref remains */
2729 ao2_unlock(callno_pool);
2733 static int callno_hash(const void *obj, const int flags)
2735 return abs(ast_random());
2738 static int create_callno_pools(void)
2742 if (!(callno_pool = ao2_container_alloc(CALLNO_POOL_BUCKETS, callno_hash, NULL))) {
2746 if (!(callno_pool_trunk = ao2_container_alloc(CALLNO_POOL_BUCKETS, callno_hash, NULL))) {
2750 /* start at 2, 0 and 1 are reserved */
2751 for (i = 2; i <= IAX_MAX_CALLS; i++) {
2752 struct callno_entry *callno_entry;
2754 if (!(callno_entry = ao2_alloc(sizeof(*callno_entry), NULL))) {
2758 callno_entry->callno = i;
2760 if (i < TRUNK_CALL_START) {
2761 ao2_link(callno_pool, callno_entry);
2763 ao2_link(callno_pool_trunk, callno_entry);
2766 ao2_ref(callno_entry, -1);
2774 * \brief Schedules delayed removal of iax2_pvt call number data
2776 * \note After MIN_REUSE_TIME has passed for a destroyed iax2_pvt, the callno is
2777 * avaliable again, and the address from the previous connection must be decremented
2778 * from the peercnts table. This function schedules these operations to take place.
2780 static void sched_delay_remove(struct sockaddr_in *sin, struct callno_entry *callno_entry)
2783 struct peercnt *peercnt;
2784 struct peercnt tmp = {
2785 .addr = sin->sin_addr.s_addr,
2788 if ((peercnt = ao2_find(peercnts, &tmp, OBJ_POINTER))) {
2789 /* refcount is incremented with ao2_find. keep that ref for the scheduler */
2790 ast_debug(1, "schedule decrement of callno used for %s in %d seconds\n", ast_inet_ntoa(sin->sin_addr), MIN_REUSE_TIME);
2791 i = iax2_sched_add(sched, MIN_REUSE_TIME * 1000, peercnt_remove_cb, peercnt);
2793 ao2_ref(peercnt, -1);
2797 iax2_sched_add(sched, MIN_REUSE_TIME * 1000, replace_callno, callno_entry);
2802 * \brief returns whether or not a frame is capable of starting a new IAX2 dialog.
2804 * \note For this implementation, inbound pokes should _NOT_ be capable of allocating
2807 static inline int attribute_pure iax2_allow_new(int frametype, int subclass, int inbound)
2809 if (frametype != AST_FRAME_IAX) {
2813 case IAX_COMMAND_NEW:
2814 case IAX_COMMAND_REGREQ:
2815 case IAX_COMMAND_FWDOWNL:
2816 case IAX_COMMAND_REGREL:
2818 case IAX_COMMAND_POKE:
2828 * \note Calling this function while holding another pvt lock can cause a deadlock.
2830 static int __find_callno(unsigned short callno, unsigned short dcallno, struct sockaddr_in *sin, int new, int sockfd, int return_locked, int check_dcallno)
2834 /* this call is calltoken validated as long as it is either NEW_FORCE
2835 * or NEW_ALLOW_CALLTOKEN_VALIDATED */
2836 int validated = (new > NEW_ALLOW) ? 1 : 0;
2839 if (new <= NEW_ALLOW) {
2841 struct chan_iax2_pvt *pvt;
2842 struct chan_iax2_pvt tmp_pvt = {
2844 .peercallno = callno,
2845 .transfercallno = callno,
2847 .frames_received = check_dcallno,
2850 memcpy(&tmp_pvt.addr, sin, sizeof(tmp_pvt.addr));
2851 /* this works for finding normal call numbers not involving transfering */
2852 if ((pvt = ao2_find(iax_peercallno_pvts, &tmp_pvt, OBJ_POINTER))) {
2853 if (return_locked) {
2854 ast_mutex_lock(&iaxsl[pvt->callno]);
2861 /* this searches for transfer call numbers that might not get caught otherwise */
2862 memset(&tmp_pvt.addr, 0, sizeof(tmp_pvt.addr));
2863 memcpy(&tmp_pvt.transfer, sin, sizeof(tmp_pvt.transfer));
2864 if ((pvt = ao2_find(iax_transfercallno_pvts, &tmp_pvt, OBJ_POINTER))) {
2865 if (return_locked) {
2866 ast_mutex_lock(&iaxsl[pvt->callno]);
2874 /* This will occur on the first response to a message that we initiated,
2875 * such as a PING. */
2877 ast_mutex_lock(&iaxsl[dcallno]);
2879 if (callno && dcallno && iaxs[dcallno] && !iaxs[dcallno]->peercallno && match(sin, callno, dcallno, iaxs[dcallno], check_dcallno)) {
2880 iaxs[dcallno]->peercallno = callno;
2882 store_by_peercallno(iaxs[dcallno]);
2883 if (!res || !return_locked) {
2884 ast_mutex_unlock(&iaxsl[dcallno]);
2889 ast_mutex_unlock(&iaxsl[dcallno]);
2892 /* If we get here, we SHOULD NOT find a call structure for this
2893 callno; if we do, it means that there is a call structure that
2894 has a peer callno but did NOT get entered into the hash table,
2897 If we find a call structure using this old, slow method, output a log
2898 message so we'll know about it. After a few months of leaving this in
2899 place, if we don't hear about people seeing these messages, we can
2900 remove this code for good.
2903 for (x = 1; !res && x < maxnontrunkcall; x++) {
2904 ast_mutex_lock(&iaxsl[x]);
2906 /* Look for an exact match */
2907 if (match(sin, callno, dcallno, iaxs[x], check_dcallno)) {
2911 if (!res || !return_locked)
2912 ast_mutex_unlock(&iaxsl[x]);
2914 for (x = TRUNK_CALL_START; !res && x < maxtrunkcall; x++) {
2915 ast_mutex_lock(&iaxsl[x]);
2917 /* Look for an exact match */
2918 if (match(sin, callno, dcallno, iaxs[x], check_dcallno)) {
2922 if (!res || !return_locked)
2923 ast_mutex_unlock(&iaxsl[x]);
2927 if (!res && (new >= NEW_ALLOW)) {
2928 struct callno_entry *callno_entry;
2929 /* It may seem odd that we look through the peer list for a name for
2930 * this *incoming* call. Well, it is weird. However, users don't
2931 * have an IP address/port number that we can match against. So,
2932 * this is just checking for a peer that has that IP/port and
2933 * assuming that we have a user of the same name. This isn't always
2934 * correct, but it will be changed if needed after authentication. */
2935 if (!iax2_getpeername(*sin, host, sizeof(host)))
2936 snprintf(host, sizeof(host), "%s:%d", ast_inet_ntoa(sin->sin_addr), ntohs(sin->sin_port));
2938 if (peercnt_add(sin)) {
2939 /* This address has hit its callnumber limit. When the limit
2940 * is reached, the connection is not added to the peercnts table.*/
2944 if (!(callno_entry = get_unused_callno(0, validated))) {
2945 /* since we ran out of space, remove the peercnt
2946 * entry we added earlier */
2947 peercnt_remove_by_addr(sin);
2948 ast_log(LOG_WARNING, "No more space\n");
2951 x = callno_entry->callno;
2952 ast_mutex_lock(&iaxsl[x]);
2954 iaxs[x] = new_iax(sin, host);
2955 update_max_nontrunk();
2958 ast_debug(1, "Creating new call structure %d\n", x);
2959 iaxs[x]->callno_entry = callno_entry;
2960 iaxs[x]->sockfd = sockfd;
2961 iaxs[x]->addr.sin_port = sin->sin_port;
2962 iaxs[x]->addr.sin_family = sin->sin_family;
2963 iaxs[x]->addr.sin_addr.s_addr = sin->sin_addr.s_addr;
2964 iaxs[x]->peercallno = callno;
2965 iaxs[x]->callno = x;
2966 iaxs[x]->pingtime = DEFAULT_RETRY_TIME;
2967 iaxs[x]->expiry = min_reg_expire;
2968 iaxs[x]->pingid = iax2_sched_add(sched, ping_time * 1000, send_ping, (void *)(long)x);
2969 iaxs[x]->lagid = iax2_sched_add(sched, lagrq_time * 1000, send_lagrq, (void *)(long)x);
2970 iaxs[x]->amaflags = amaflags;
2971 ast_copy_flags64(iaxs[x], &globalflags, IAX_NOTRANSFER | IAX_TRANSFERMEDIA | IAX_USEJITTERBUF | IAX_FORCEJITTERBUF | IAX_SENDCONNECTEDLINE | IAX_RECVCONNECTEDLINE | IAX_FORCE_ENCRYPT);
2972 ast_string_field_set(iaxs[x], accountcode, accountcode);
2973 ast_string_field_set(iaxs[x], mohinterpret, mohinterpret);
2974 ast_string_field_set(iaxs[x], mohsuggest, mohsuggest);
2975 ast_string_field_set(iaxs[x], parkinglot, default_parkinglot);
2977 if (iaxs[x]->peercallno) {
2978 store_by_peercallno(iaxs[x]);
2981 ast_log(LOG_WARNING, "Out of resources\n");
2982 ast_mutex_unlock(&iaxsl[x]);
2983 replace_callno(callno_entry);
2987 ast_mutex_unlock(&iaxsl[x]);
2993 static int find_callno(unsigned short callno, unsigned short dcallno, struct sockaddr_in *sin, int new, int sockfd, int full_frame) {
2994 return __find_callno(callno, dcallno, sin, new, sockfd, 0, full_frame);
2997 static int find_callno_locked(unsigned short callno, unsigned short dcallno, struct sockaddr_in *sin, int new, int sockfd, int full_frame) {
2999 return __find_callno(callno, dcallno, sin, new, sockfd, 1, full_frame);
3003 * \brief Queue a frame to a call's owning asterisk channel
3005 * \pre This function assumes that iaxsl[callno] is locked when called.
3007 * \note IMPORTANT NOTE!!! Any time this function is used, even if iaxs[callno]
3008 * was valid before calling it, it may no longer be valid after calling it.
3009 * This function may unlock and lock the mutex associated with this callno,
3010 * meaning that another thread may grab it and destroy the call.
3012 static int iax2_queue_frame(int callno, struct ast_frame *f)
3014 iax2_lock_owner(callno);
3015 if (iaxs[callno] && iaxs[callno]->owner) {
3016 ast_queue_frame(iaxs[callno]->owner, f);
3017 ast_channel_unlock(iaxs[callno]->owner);
3023 * \brief Queue a hangup frame on the ast_channel owner
3025 * This function queues a hangup frame on the owner of the IAX2 pvt struct that
3026 * is active for the given call number.
3028 * \pre Assumes lock for callno is already held.
3030 * \note IMPORTANT NOTE!!! Any time this function is used, even if iaxs[callno]
3031 * was valid before calling it, it may no longer be valid after calling it.
3032 * This function may unlock and lock the mutex associated with this callno,
3033 * meaning that another thread may grab it and destroy the call.
3035 static int iax2_queue_hangup(int callno)
3037 iax2_lock_owner(callno);
3038 if (iaxs[callno] && iaxs[callno]->owner) {
3039 ast_queue_hangup(iaxs[callno]->owner);
3040 ast_channel_unlock(iaxs[callno]->owner);
3046 * \brief Queue a control frame on the ast_channel owner
3048 * This function queues a control frame on the owner of the IAX2 pvt struct that
3049 * is active for the given call number.
3051 * \pre Assumes lock for callno is already held.
3053 * \note IMPORTANT NOTE!!! Any time this function is used, even if iaxs[callno]
3054 * was valid before calling it, it may no longer be valid after calling it.
3055 * This function may unlock and lock the mutex associated with this callno,
3056 * meaning that another thread may grab it and destroy the call.
3058 static int iax2_queue_control_data(int callno,
3059 enum ast_control_frame_type control, const void *data, size_t datalen)
3061 iax2_lock_owner(callno);
3062 if (iaxs[callno] && iaxs[callno]->owner) {
3063 ast_queue_control_data(iaxs[callno]->owner, control, data, datalen);
3064 ast_channel_unlock(iaxs[callno]->owner);
3068 static void destroy_firmware(struct iax_firmware *cur)
3070 /* Close firmware */
3072 munmap((void*)cur->fwh, ntohl(cur->fwh->datalen) + sizeof(*(cur->fwh)));
3078 static int try_firmware(char *s)
3081 struct iax_firmware *cur = NULL;
3082 int ifd, fd, res, len, chunk;
3083 struct ast_iax2_firmware_header *fwh, fwh2;
3084 struct MD5Context md5;
3085 unsigned char sum[16], buf[1024];
3088 if (!(s2 = alloca(strlen(s) + 100))) {
3089 ast_log(LOG_WARNING, "Alloca failed!\n");
3093 last = strrchr(s, '/');
3099 snprintf(s2, strlen(s) + 100, "/var/tmp/%s-%ld", last, (unsigned long)ast_random());
3101 if ((res = stat(s, &stbuf) < 0)) {
3102 ast_log(LOG_WARNING, "Failed to stat '%s': %s\n", s, strerror(errno));
3106 /* Make sure it's not a directory */
3107 if (S_ISDIR(stbuf.st_mode))
3109 ifd = open(s, O_RDONLY);
3111 ast_log(LOG_WARNING, "Cannot open '%s': %s\n", s, strerror(errno));
3114 fd = open(s2, O_RDWR | O_CREAT | O_EXCL, AST_FILE_MODE);
3116 ast_log(LOG_WARNING, "Cannot open '%s' for writing: %s\n", s2, strerror(errno));
3120 /* Unlink our newly created file */
3123 /* Now copy the firmware into it */
3124 len = stbuf.st_size;
3127 if (chunk > sizeof(buf))
3128 chunk = sizeof(buf);
3129 res = read(ifd, buf, chunk);
3131 ast_log(LOG_WARNING, "Only read %d of %d bytes of data :(: %s\n", res, chunk, strerror(errno));
3136 res = write(fd, buf, chunk);
3138 ast_log(LOG_WARNING, "Only write %d of %d bytes of data :(: %s\n", res, chunk, strerror(errno));
3146 /* Return to the beginning */
3147 lseek(fd, 0, SEEK_SET);
3148 if ((res = read(fd, &fwh2, sizeof(fwh2))) != sizeof(fwh2)) {
3149 ast_log(LOG_WARNING, "Unable to read firmware header in '%s'\n", s);
3153 if (ntohl(fwh2.magic) != IAX_FIRMWARE_MAGIC) {
3154 ast_log(LOG_WARNING, "'%s' is not a valid firmware file\n", s);
3158 if (ntohl(fwh2.datalen) != (stbuf.st_size - sizeof(fwh2))) {
3159 ast_log(LOG_WARNING, "Invalid data length in firmware '%s'\n", s);
3163 if (fwh2.devname[sizeof(fwh2.devname) - 1] || ast_strlen_zero((char *)fwh2.devname)) {
3164 ast_log(LOG_WARNING, "No or invalid device type specified for '%s'\n", s);
3168 fwh = (struct ast_iax2_firmware_header*)mmap(NULL, stbuf.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
3169 if (fwh == MAP_FAILED) {
3170 ast_log(LOG_WARNING, "mmap failed: %s\n", strerror(errno));
3175 MD5Update(&md5, fwh->data, ntohl(fwh->datalen));
3176 MD5Final(sum, &md5);
3177 if (memcmp(sum, fwh->chksum, sizeof(sum))) {
3178 ast_log(LOG_WARNING, "Firmware file '%s' fails checksum\n", s);
3179 munmap((void*)fwh, stbuf.st_size);
3184 AST_LIST_TRAVERSE(&firmwares, cur, list) {
3185 if (!strcmp((char *)cur->fwh->devname, (char *)fwh->devname)) {
3186 /* Found a candidate */
3187 if (cur->dead || (ntohs(cur->fwh->version) < ntohs(fwh->version)))
3188 /* The version we have on loaded is older, load this one instead */
3190 /* This version is no newer than what we have. Don't worry about it.
3191 We'll consider it a proper load anyhow though */
3192 munmap((void*)fwh, stbuf.st_size);
3198 if (!cur && ((cur = ast_calloc(1, sizeof(*cur))))) {
3200 AST_LIST_INSERT_TAIL(&firmwares, cur, list);
3205 munmap((void*)cur->fwh, cur->mmaplen);
3210 cur->mmaplen = stbuf.st_size;
3217 static int iax_check_version(char *dev)
3220 struct iax_firmware *cur = NULL;
3222 if (ast_strlen_zero(dev))
3225 AST_LIST_LOCK(&firmwares);
3226 AST_LIST_TRAVERSE(&firmwares, cur, list) {
3227 if (!strcmp(dev, (char *)cur->fwh->devname)) {
3228 res = ntohs(cur->fwh->version);
3232 AST_LIST_UNLOCK(&firmwares);
3237 static int iax_firmware_append(struct iax_ie_data *ied, const unsigned char *dev, unsigned int desc)
3240 unsigned int bs = desc & 0xff;
3241 unsigned int start = (desc >> 8) & 0xffffff;
3243 struct iax_firmware *cur;
3245 if (ast_strlen_zero((char *)dev) || !bs)
3250 AST_LIST_LOCK(&firmwares);
3251 AST_LIST_TRAVERSE(&firmwares, cur, list) {
3252 if (strcmp((char *)dev, (char *)cur->fwh->devname))
3254 iax_ie_append_int(ied, IAX_IE_FWBLOCKDESC, desc);
3255 if (start < ntohl(cur->fwh->datalen)) {
3256 bytes = ntohl(cur->fwh->datalen) - start;
3259 iax_ie_append_raw(ied, IAX_IE_FWBLOCKDATA, cur->fwh->data + start, bytes);
3262 iax_ie_append(ied, IAX_IE_FWBLOCKDATA);