2 * Asterisk -- An open source telephony toolkit.
4 * Copyright (C) 1999 - 2008, 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 DAHDI for Pseudo TDM
23 * \author Mark Spencer <markster@digium.com>
25 * Connects to the DAHDI telephony library as well as
26 * libpri. Libpri is optional and needed only if you are
27 * going to use ISDN connections.
29 * You need to install libraries before you attempt to compile
30 * and install the DAHDI channel.
33 * \arg \ref Config_dahdi
35 * \ingroup channel_drivers
37 * \todo Deprecate the "musiconhold" configuration option post 1.4
41 <depend>res_smdi</depend>
42 <depend>dahdi</depend>
43 <depend>tonezone</depend>
51 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
57 #include <sys/signal.h>
59 #include <sys/ioctl.h>
63 #include <dahdi/user.h>
64 #include <dahdi/tonezone.h>
65 #include "sig_analog.h"
66 /* Analog signaling is currently still present in chan_dahdi for use with
67 * radio. Sig_analog does not currently handle any radio operations. If
68 * radio only uses analog signaling, then the radio handling logic could
69 * be placed in sig_analog and the duplicated code could be removed.
77 /* put this here until sig_ss7 comes along */
78 #define NUM_DCHANS 4 /*!< No more than 4 d-channels */
79 #define MAX_CHANNELS 672 /*!< No more than a DS3 per trunk group */
87 #include "asterisk/lock.h"
88 #include "asterisk/channel.h"
89 #include "asterisk/config.h"
90 #include "asterisk/module.h"
91 #include "asterisk/pbx.h"
92 #include "asterisk/file.h"
93 #include "asterisk/ulaw.h"
94 #include "asterisk/alaw.h"
95 #include "asterisk/callerid.h"
96 #include "asterisk/adsi.h"
97 #include "asterisk/cli.h"
98 #include "asterisk/cdr.h"
99 #include "asterisk/cel.h"
100 #include "asterisk/features.h"
101 #include "asterisk/musiconhold.h"
102 #include "asterisk/say.h"
103 #include "asterisk/tdd.h"
104 #include "asterisk/app.h"
105 #include "asterisk/dsp.h"
106 #include "asterisk/astdb.h"
107 #include "asterisk/manager.h"
108 #include "asterisk/causes.h"
109 #include "asterisk/term.h"
110 #include "asterisk/utils.h"
111 #include "asterisk/transcap.h"
112 #include "asterisk/stringfields.h"
113 #include "asterisk/abstract_jb.h"
114 #include "asterisk/smdi.h"
115 #include "asterisk/astobj.h"
116 #include "asterisk/event.h"
117 #include "asterisk/devicestate.h"
118 #include "asterisk/paths.h"
121 <application name="DAHDISendKeypadFacility" language="en_US">
123 Send digits out of band over a PRI.
126 <parameter name="digits" required="true" />
129 <para>This application will send the given string of digits in a Keypad
130 Facility IE over the current channel.</para>
133 <application name="DAHDISendCallreroutingFacility" language="en_US">
135 Send QSIG call rerouting facility over a PRI.
138 <parameter name="destination" required="true">
139 <para>Destination number.</para>
141 <parameter name="original">
142 <para>Original called number.</para>
144 <parameter name="reason">
145 <para>Diversion reason, if not specified defaults to <literal>unknown</literal></para>
149 <para>This application will send a Callrerouting Facility IE over the
150 current channel.</para>
153 <application name="DAHDIAcceptR2Call" language="en_US">
155 Accept an R2 call if its not already accepted (you still need to answer it)
158 <parameter name="charge" required="true">
159 <para>Yes or No.</para>
160 <para>Whether you want to accept the call with charge or without charge.</para>
164 <para>This application will Accept the R2 call either with charge or no charge.</para>
167 <manager name="DAHDITransfer" language="en_US">
169 Transfer DAHDI Channel.
172 <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
173 <parameter name="DAHDIChannel" required="true">
174 <para>DAHDI channel name to transfer.</para>
178 <para>Transfer a DAHDI channel.</para>
181 <manager name="DAHDIHangup" language="en_US">
183 Hangup DAHDI Channel.
186 <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
187 <parameter name="DAHDIChannel" required="true">
188 <para>DAHDI channel name to hangup.</para>
192 <para>Hangup a DAHDI channel.</para>
195 <manager name="DAHDIDialOffhook" language="en_US">
197 Dial over DAHDI channel while offhook.
200 <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
201 <parameter name="DAHDIChannel" required="true" />
202 <parameter name="Number" required="true" />
207 <manager name="DAHDIDNDon" language="en_US">
209 Toggle DAHDI channel Do Not Disturb status ON.
212 <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
213 <parameter name="DAHDIChannel" required="true" />
218 <manager name="DAHDIDNDoff" language="en_US">
220 Toggle DAHDI channel Do Not Disturb status OFF.
223 <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
224 <parameter name="DAHDIChannel" required="true" />
229 <manager name="DAHDIShowChannels" language="en_US">
231 Show status DAHDI channels.
234 <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
235 <parameter name="DAHDIChannel" required="true" />
240 <manager name="DAHDIRestart" language="en_US">
242 Fully Restart DAHDI channels (terminates calls).
245 <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
252 #define SMDI_MD_WAIT_TIMEOUT 1500 /* 1.5 seconds */
254 static const char * const lbostr[] = {
255 "0 db (CSU)/0-133 feet (DSX-1)",
256 "133-266 feet (DSX-1)",
257 "266-399 feet (DSX-1)",
258 "399-533 feet (DSX-1)",
259 "533-655 feet (DSX-1)",
265 /*! Global jitterbuffer configuration - by default, jb is disabled */
266 static struct ast_jb_conf default_jbconf =
270 .resync_threshold = -1,
273 static struct ast_jb_conf global_jbconf;
276 * \note Define ZHONE_HACK to cause us to go off hook and then back on hook when
277 * the user hangs up to reset the state machine so ring works properly.
278 * This is used to be able to support kewlstart by putting the zhone in
279 * groundstart mode since their forward disconnect supervision is entirely
280 * broken even though their documentation says it isn't and their support
281 * is entirely unwilling to provide any assistance with their channel banks
282 * even though their web site says they support their products for life.
284 /* #define ZHONE_HACK */
287 * Define if you want to check the hook state for an FXO (FXS signalled) interface
288 * before dialing on it. Certain FXO interfaces always think they're out of
289 * service with this method however.
291 /* #define DAHDI_CHECK_HOOKSTATE */
293 /*! \brief Typically, how many rings before we should send Caller*ID */
294 #define DEFAULT_CIDRINGS 1
296 #define CHANNEL_PSEUDO -12
298 #define AST_LAW(p) (((p)->law == DAHDI_LAW_ALAW) ? AST_FORMAT_ALAW : AST_FORMAT_ULAW)
301 /*! \brief Signaling types that need to use MF detection should be placed in this macro */
302 #define NEED_MFDETECT(p) (((p)->sig == SIG_FEATDMF) || ((p)->sig == SIG_FEATDMF_TA) || ((p)->sig == SIG_E911) || ((p)->sig == SIG_FGC_CAMA) || ((p)->sig == SIG_FGC_CAMAMF) || ((p)->sig == SIG_FEATB))
304 static const char tdesc[] = "DAHDI Telephony Driver"
305 #if defined(HAVE_PRI) || defined(HAVE_SS7) || defined(HAVE_OPENR2)
319 #if defined(HAVE_PRI) || defined(HAVE_SS7)
327 static const char config[] = "chan_dahdi.conf";
329 #define SIG_EM DAHDI_SIG_EM
330 #define SIG_EMWINK (0x0100000 | DAHDI_SIG_EM)
331 #define SIG_FEATD (0x0200000 | DAHDI_SIG_EM)
332 #define SIG_FEATDMF (0x0400000 | DAHDI_SIG_EM)
333 #define SIG_FEATB (0x0800000 | DAHDI_SIG_EM)
334 #define SIG_E911 (0x1000000 | DAHDI_SIG_EM)
335 #define SIG_FEATDMF_TA (0x2000000 | DAHDI_SIG_EM)
336 #define SIG_FGC_CAMA (0x4000000 | DAHDI_SIG_EM)
337 #define SIG_FGC_CAMAMF (0x8000000 | DAHDI_SIG_EM)
338 #define SIG_FXSLS DAHDI_SIG_FXSLS
339 #define SIG_FXSGS DAHDI_SIG_FXSGS
340 #define SIG_FXSKS DAHDI_SIG_FXSKS
341 #define SIG_FXOLS DAHDI_SIG_FXOLS
342 #define SIG_FXOGS DAHDI_SIG_FXOGS
343 #define SIG_FXOKS DAHDI_SIG_FXOKS
344 #define SIG_PRI DAHDI_SIG_CLEAR
345 #define SIG_BRI (0x2000000 | DAHDI_SIG_CLEAR)
346 #define SIG_BRI_PTMP (0X4000000 | DAHDI_SIG_CLEAR)
347 #define SIG_SS7 (0x1000000 | DAHDI_SIG_CLEAR)
348 #define SIG_MFCR2 DAHDI_SIG_CAS
349 #define SIG_SF DAHDI_SIG_SF
350 #define SIG_SFWINK (0x0100000 | DAHDI_SIG_SF)
351 #define SIG_SF_FEATD (0x0200000 | DAHDI_SIG_SF)
352 #define SIG_SF_FEATDMF (0x0400000 | DAHDI_SIG_SF)
353 #define SIG_SF_FEATB (0x0800000 | DAHDI_SIG_SF)
354 #define SIG_EM_E1 DAHDI_SIG_EM_E1
357 #define NUM_SPANS DAHDI_MAX_SPANS
362 #define CHAN_PSEUDO -2
364 #define CALLPROGRESS_PROGRESS 1
365 #define CALLPROGRESS_FAX_OUTGOING 2
366 #define CALLPROGRESS_FAX_INCOMING 4
367 #define CALLPROGRESS_FAX (CALLPROGRESS_FAX_INCOMING | CALLPROGRESS_FAX_OUTGOING)
369 #define NUM_CADENCE_MAX 25
370 static int num_cadence = 4;
371 static int user_has_defined_cadences = 0;
373 static struct dahdi_ring_cadence cadences[NUM_CADENCE_MAX] = {
374 { { 125, 125, 2000, 4000 } }, /*!< Quick chirp followed by normal ring */
375 { { 250, 250, 500, 1000, 250, 250, 500, 4000 } }, /*!< British style ring */
376 { { 125, 125, 125, 125, 125, 4000 } }, /*!< Three short bursts */
377 { { 1000, 500, 2500, 5000 } }, /*!< Long ring */
380 /*! \brief cidrings says in which pause to transmit the cid information, where the first pause
381 * is 1, the second pause is 2 and so on.
384 static int cidrings[NUM_CADENCE_MAX] = {
385 2, /*!< Right after first long ring */
386 4, /*!< Right after long part */
387 3, /*!< After third chirp */
388 2, /*!< Second spell */
391 /* ETSI EN300 659-1 specifies the ring pulse between 200 and 300 mS */
392 static struct dahdi_ring_cadence AS_RP_cadence = {{250, 10000}};
394 #define ISTRUNK(p) ((p->sig == SIG_FXSLS) || (p->sig == SIG_FXSKS) || \
395 (p->sig == SIG_FXSGS) || (p->sig == SIG_PRI))
397 #define CANBUSYDETECT(p) (ISTRUNK(p) || (p->sig & (SIG_EM | SIG_EM_E1 | SIG_SF)) /* || (p->sig & __DAHDI_SIG_FXO) */)
398 #define CANPROGRESSDETECT(p) (ISTRUNK(p) || (p->sig & (SIG_EM | SIG_EM_E1 | SIG_SF)) /* || (p->sig & __DAHDI_SIG_FXO) */)
400 static char defaultcic[64] = "";
401 static char defaultozz[64] = "";
403 static char parkinglot[AST_MAX_EXTENSION] = ""; /*!< Default parking lot for this channel */
405 /*! Run this script when the MWI state changes on an FXO line, if mwimonitor is enabled */
406 static char mwimonitornotify[PATH_MAX] = "";
407 #ifndef HAVE_DAHDI_LINEREVERSE_VMWI
408 static int mwisend_rpas = 0;
411 static char progzone[10] = "";
413 static int usedistinctiveringdetection = 0;
414 static int distinctiveringaftercid = 0;
416 static int numbufs = 4;
418 static int mwilevel = 512;
421 #ifdef PRI_GETSET_TIMERS
422 static int pritimers[PRI_MAX_TIMERS];
424 static int pridebugfd = -1;
425 static char pridebugfilename[1024] = "";
428 /*! \brief Wait up to 16 seconds for first digit (FXO logic) */
429 static int firstdigittimeout = 16000;
431 /*! \brief How long to wait for following digits (FXO logic) */
432 static int gendigittimeout = 8000;
434 /*! \brief How long to wait for an extra digit, if there is an ambiguous match */
435 static int matchdigittimeout = 3000;
437 /*! \brief Protect the interface list (of dahdi_pvt's) */
438 AST_MUTEX_DEFINE_STATIC(iflock);
441 static int ifcount = 0;
444 AST_MUTEX_DEFINE_STATIC(pridebugfdlock);
447 /*! \brief Protect the monitoring thread, so only one process can kill or start it, and not
448 when it's doing something critical. */
449 AST_MUTEX_DEFINE_STATIC(monlock);
451 /*! \brief This is the thread for the monitor which checks for input on the channels
452 which are not currently in use. */
453 static pthread_t monitor_thread = AST_PTHREADT_NULL;
454 static ast_cond_t ss_thread_complete;
455 AST_MUTEX_DEFINE_STATIC(ss_thread_lock);
456 AST_MUTEX_DEFINE_STATIC(restart_lock);
457 static int ss_thread_count = 0;
458 static int num_restart_pending = 0;
460 static int restart_monitor(void);
462 static enum ast_bridge_result dahdi_bridge(struct ast_channel *c0, struct ast_channel *c1, int flags, struct ast_frame **fo, struct ast_channel **rc, int timeoutms);
464 static int dahdi_sendtext(struct ast_channel *c, const char *text);
466 static void mwi_event_cb(const struct ast_event *event, void *userdata)
468 /* This module does not handle MWI in an event-based manner. However, it
469 * subscribes to MWI for each mailbox that is configured so that the core
470 * knows that we care about it. Then, chan_dahdi will get the MWI from the
471 * event cache instead of checking the mailbox directly. */
474 /*! \brief Avoid the silly dahdi_getevent which ignores a bunch of events */
475 static inline int dahdi_get_event(int fd)
478 if (ioctl(fd, DAHDI_GETEVENT, &j) == -1)
483 /*! \brief Avoid the silly dahdi_waitevent which ignores a bunch of events */
484 static inline int dahdi_wait_event(int fd)
487 i = DAHDI_IOMUX_SIGEVENT;
488 if (ioctl(fd, DAHDI_IOMUX, &i) == -1)
490 if (ioctl(fd, DAHDI_GETEVENT, &j) == -1)
495 /*! Chunk size to read -- we use 20ms chunks to make things happy. */
496 #define READ_SIZE 160
498 #define MASK_AVAIL (1 << 0) /*!< Channel available for PRI use */
499 #define MASK_INUSE (1 << 1) /*!< Channel currently in use */
501 #define CALLWAITING_SILENT_SAMPLES ( (300 * 8) / READ_SIZE) /*!< 300 ms */
502 #define CALLWAITING_REPEAT_SAMPLES ( (10000 * 8) / READ_SIZE) /*!< 10,000 ms */
503 #define CIDCW_EXPIRE_SAMPLES ( (500 * 8) / READ_SIZE) /*!< 500 ms */
504 #define MIN_MS_SINCE_FLASH ( (2000) ) /*!< 2000 ms */
505 #define DEFAULT_RINGT ( (8000 * 8) / READ_SIZE) /*!< 8,000 ms */
510 * \brief Configured ring timeout base.
511 * \note Value computed from "ringtimeout" read in from chan_dahdi.conf if it exists.
513 static int ringt_base = DEFAULT_RINGT;
517 #define LINKSTATE_INALARM (1 << 0)
518 #define LINKSTATE_STARTING (1 << 1)
519 #define LINKSTATE_UP (1 << 2)
520 #define LINKSTATE_DOWN (1 << 3)
522 #define SS7_NAI_DYNAMIC -1
524 #define LINKSET_FLAG_EXPLICITACM (1 << 0)
527 pthread_t master; /*!< Thread of master */
531 int linkstate[NUM_DCHANS];
535 LINKSET_STATE_DOWN = 0,
538 char called_nai; /*!< Called Nature of Address Indicator */
539 char calling_nai; /*!< Calling Nature of Address Indicator */
540 char internationalprefix[10]; /*!< country access code ('00' for european dialplans) */
541 char nationalprefix[10]; /*!< area access code ('0' for european dialplans) */
542 char subscriberprefix[20]; /*!< area access code + area code ('0'+area code for european dialplans) */
543 char unknownprefix[20]; /*!< for unknown dialplans */
545 struct dahdi_pvt *pvts[MAX_CHANNELS]; /*!< Member channel pvt structs */
546 int flags; /*!< Linkset flags */
549 static struct dahdi_ss7 linksets[NUM_SPANS];
551 static int cur_ss7type = -1;
552 static int cur_linkset = -1;
553 static int cur_pointcode = -1;
554 static int cur_cicbeginswith = -1;
555 static int cur_adjpointcode = -1;
556 static int cur_networkindicator = -1;
557 static int cur_defaultdpc = -1;
558 #endif /* HAVE_SS7 */
562 pthread_t r2master; /*!< Thread of master */
563 openr2_context_t *protocol_context; /*!< OpenR2 context handle */
564 struct dahdi_pvt *pvts[MAX_CHANNELS]; /*!< Member channel pvt structs */
565 int numchans; /*!< Number of channels in this R2 block */
566 int monitored_count; /*!< Number of channels being monitored */
567 ast_mutex_t monitored_count_lock; /*!< lock access to the counter */
568 ast_cond_t do_monitor; /*!< Condition to wake up the monitor thread when there's work to do */
571 struct dahdi_mfcr2_conf {
572 openr2_variant_t variant;
574 int metering_pulse_timeout;
578 #if defined(OR2_LIB_INTERFACE) && OR2_LIB_INTERFACE > 1
579 int skip_category_request:1;
582 int allow_collect_calls:1;
584 int accept_on_offer:1;
585 int forced_release:1;
587 int immediate_accept:1;
588 char logdir[OR2_MAX_PATH];
589 char r2proto_file[OR2_MAX_PATH];
590 openr2_log_level_t loglevel;
591 openr2_calling_party_category_t category;
594 /* malloc'd array of malloc'd r2links */
595 static struct dahdi_mfcr2 **r2links;
596 /* how many r2links have been malloc'd */
597 static int r2links_count = 0;
599 #endif /* HAVE_OPENR2 */
604 int dchannels[NUM_DCHANS]; /*!< What channel are the dchannels on */
605 int mastertrunkgroup; /*!< What trunk group is our master */
606 int prilogicalspan; /*!< Logical span number within trunk group */
607 struct sig_pri_pri pri;
610 static struct dahdi_pri pris[NUM_SPANS];
613 /*! Shut up the compiler */
617 #define SUB_REAL 0 /*!< Active call */
618 #define SUB_CALLWAIT 1 /*!< Call-Waiting call on hold */
619 #define SUB_THREEWAY 2 /*!< Three-way call */
621 /* Polarity states */
622 #define POLARITY_IDLE 0
623 #define POLARITY_REV 1
626 struct distRingData {
630 struct ringContextData {
631 char contextData[AST_MAX_CONTEXT];
633 struct dahdi_distRings {
634 struct distRingData ringnum[3];
635 struct ringContextData ringContext[3];
638 static const char * const subnames[] = {
644 struct dahdi_subchannel {
646 struct ast_channel *owner;
648 short buffer[AST_FRIENDLY_OFFSET/2 + READ_SIZE];
649 struct ast_frame f; /*!< One frame for each channel. How did this ever work before? */
650 unsigned int needringing:1;
651 unsigned int needbusy:1;
652 unsigned int needcongestion:1;
653 unsigned int needanswer:1;
654 unsigned int needflash:1;
655 unsigned int needhold:1;
656 unsigned int needunhold:1;
657 unsigned int linear:1;
658 unsigned int inthreeway:1;
659 struct dahdi_confinfo curconf;
662 #define CONF_USER_REAL (1 << 0)
663 #define CONF_USER_THIRDCALL (1 << 1)
667 /* States for sending MWI message
668 * First three states are required for send Ring Pulse Alert Signal
680 struct mwisend_info {
681 struct timeval pause;
682 mwisend_states mwisend_current;
685 static struct dahdi_pvt {
687 struct callerid_state *cs;
688 struct ast_channel *owner; /*!< Our current active owner (if applicable) */
689 /*!< Up to three channels can be associated with this call */
691 struct dahdi_subchannel sub_unused; /*!< Just a safety precaution */
692 struct dahdi_subchannel subs[3]; /*!< Sub-channels */
693 struct dahdi_confinfo saveconf; /*!< Saved conference info */
695 struct dahdi_pvt *slaves[MAX_SLAVES]; /*!< Slave to us (follows our conferencing) */
696 struct dahdi_pvt *master; /*!< Master to us (we follow their conferencing) */
697 int inconference; /*!< If our real should be in the conference */
699 int bufsize; /*!< Size of the buffers */
700 int buf_no; /*!< Number of buffers */
701 int buf_policy; /*!< Buffer policy */
702 int faxbuf_no; /*!< Number of Fax buffers */
703 int faxbuf_policy; /*!< Fax buffer policy */
704 int sig; /*!< Signalling style */
706 * \brief Nonzero if the signaling type is sent over a radio.
707 * \note Set to a couple of nonzero values but it is only tested like a boolean.
710 int outsigmod; /*!< Outbound Signalling style (modifier) */
711 int oprmode; /*!< "Operator Services" mode */
712 struct dahdi_pvt *oprpeer; /*!< "Operator Services" peer tech_pvt ptr */
713 /*! \brief Amount of gain to increase during caller id */
715 /*! \brief Rx gain set by chan_dahdi.conf */
717 /*! \brief Tx gain set by chan_dahdi.conf */
719 int tonezone; /*!< tone zone for this chan, or -1 for default */
720 struct dahdi_pvt *next; /*!< Next channel in list */
721 struct dahdi_pvt *prev; /*!< Prev channel in list */
726 * \brief TRUE if ADSI (Analog Display Services Interface) available
727 * \note Set from the "adsi" value read in from chan_dahdi.conf
731 * \brief TRUE if we can use a polarity reversal to mark when an outgoing
732 * call is answered by the remote party.
733 * \note Set from the "answeronpolarityswitch" value read in from chan_dahdi.conf
735 unsigned int answeronpolarityswitch:1;
737 * \brief TRUE if busy detection is enabled.
738 * (Listens for the beep-beep busy pattern.)
739 * \note Set from the "busydetect" value read in from chan_dahdi.conf
741 unsigned int busydetect:1;
743 * \brief TRUE if call return is enabled.
744 * (*69, if your dialplan doesn't catch this first)
745 * \note Set from the "callreturn" value read in from chan_dahdi.conf
747 unsigned int callreturn:1;
749 * \brief TRUE if busy extensions will hear the call-waiting tone
750 * and can use hook-flash to switch between callers.
751 * \note Can be disabled by dialing *70.
752 * \note Initialized with the "callwaiting" value read in from chan_dahdi.conf
754 unsigned int callwaiting:1;
756 * \brief TRUE if send caller ID for Call Waiting
757 * \note Set from the "callwaitingcallerid" value read in from chan_dahdi.conf
759 unsigned int callwaitingcallerid:1;
761 * \brief TRUE if support for call forwarding enabled.
762 * Dial *72 to enable call forwarding.
763 * Dial *73 to disable call forwarding.
764 * \note Set from the "cancallforward" value read in from chan_dahdi.conf
766 unsigned int cancallforward:1;
768 * \brief TRUE if support for call parking is enabled.
769 * \note Set from the "canpark" value read in from chan_dahdi.conf
771 unsigned int canpark:1;
772 /*! \brief TRUE if to wait for a DTMF digit to confirm answer */
773 unsigned int confirmanswer:1;
775 * \brief TRUE if the channel is to be destroyed on hangup.
776 * (Used by pseudo channels.)
778 unsigned int destroy:1;
779 unsigned int didtdd:1; /*!< flag to say its done it once */
780 /*! \brief TRUE if analog type line dialed no digits in Dial() */
781 unsigned int dialednone:1;
782 /*! \brief TRUE if in the process of dialing digits or sending something. */
783 unsigned int dialing:1;
784 /*! \brief TRUE if the transfer capability of the call is digital. */
785 unsigned int digital:1;
786 /*! \brief TRUE if Do-Not-Disturb is enabled. */
788 /*! \brief XXX BOOLEAN Purpose??? */
789 unsigned int echobreak:1;
791 * \brief TRUE if echo cancellation enabled when bridged.
792 * \note Initialized with the "echocancelwhenbridged" value read in from chan_dahdi.conf
793 * \note Disabled if the echo canceller is not setup.
795 unsigned int echocanbridged:1;
796 /*! \brief TRUE if echo cancellation is turned on. */
797 unsigned int echocanon:1;
798 /*! \brief TRUE if a fax tone has already been handled. */
799 unsigned int faxhandled:1;
800 /*! TRUE if dynamic faxbuffers are configured for use, default is OFF */
801 unsigned int usefaxbuffers:1;
802 /*! TRUE while buffer configuration override is in use */
803 unsigned int bufferoverrideinuse:1;
804 /*! \brief TRUE if over a radio and dahdi_read() has been called. */
805 unsigned int firstradio:1;
807 * \brief TRUE if the call will be considered "hung up" on a polarity reversal.
808 * \note Set from the "hanguponpolarityswitch" value read in from chan_dahdi.conf
810 unsigned int hanguponpolarityswitch:1;
811 /*! \brief TRUE if DTMF detection needs to be done by hardware. */
812 unsigned int hardwaredtmf:1;
814 * \brief TRUE if the outgoing caller ID is blocked/hidden.
815 * \note Caller ID can be disabled by dialing *67.
816 * \note Caller ID can be enabled by dialing *82.
817 * \note Initialized with the "hidecallerid" value read in from chan_dahdi.conf
819 unsigned int hidecallerid:1;
821 * \brief TRUE if hide just the name not the number for legacy PBX use.
822 * \note Only applies to PRI channels.
823 * \note Set from the "hidecalleridname" value read in from chan_dahdi.conf
825 unsigned int hidecalleridname:1;
826 /*! \brief TRUE if DTMF detection is disabled. */
827 unsigned int ignoredtmf:1;
829 * \brief TRUE if the channel should be answered immediately
830 * without attempting to gather any digits.
831 * \note Set from the "immediate" value read in from chan_dahdi.conf
833 unsigned int immediate:1;
834 /*! \brief TRUE if in an alarm condition. */
835 unsigned int inalarm:1;
836 /*! \brief TRUE if TDD in MATE mode */
838 /*! \brief TRUE if we originated the call leg. */
839 unsigned int outgoing:1;
840 /* unsigned int overlapdial:1; unused and potentially confusing */
842 * \brief TRUE if busy extensions will hear the call-waiting tone
843 * and can use hook-flash to switch between callers.
844 * \note Set from the "callwaiting" value read in from chan_dahdi.conf
846 unsigned int permcallwaiting:1;
848 * \brief TRUE if the outgoing caller ID is blocked/restricted/hidden.
849 * \note Set from the "hidecallerid" value read in from chan_dahdi.conf
851 unsigned int permhidecallerid:1;
853 * \brief TRUE if PRI congestion/busy indications are sent out-of-band.
854 * \note Set from the "priindication" value read in from chan_dahdi.conf
856 unsigned int priindication_oob:1;
858 * \brief TRUE if PRI B channels are always exclusively selected.
859 * \note Set from the "priexclusive" value read in from chan_dahdi.conf
861 unsigned int priexclusive:1;
863 * \brief TRUE if we will pulse dial.
864 * \note Set from the "pulsedial" value read in from chan_dahdi.conf
866 unsigned int pulse:1;
867 /*! \brief TRUE if a pulsed digit was detected. (Pulse dial phone detected) */
868 unsigned int pulsedial:1;
869 unsigned int restartpending:1; /*!< flag to ensure counted only once for restart */
871 * \brief TRUE if caller ID is restricted.
872 * \note Set but not used. Should be deleted. Redundant with permhidecallerid.
873 * \note Set from the "restrictcid" value read in from chan_dahdi.conf
875 unsigned int restrictcid:1;
877 * \brief TRUE if three way calling is enabled
878 * \note Set from the "threewaycalling" value read in from chan_dahdi.conf
880 unsigned int threewaycalling:1;
882 * \brief TRUE if call transfer is enabled
883 * \note For FXS ports (either direct analog or over T1/E1):
884 * Support flash-hook call transfer
885 * \note For digital ports using ISDN PRI protocols:
886 * Support switch-side transfer (called 2BCT, RLT or other names)
887 * \note Set from the "transfer" value read in from chan_dahdi.conf
889 unsigned int transfer:1;
891 * \brief TRUE if caller ID is used on this channel.
892 * \note PRI and SS7 spans will save caller ID from the networking peer.
893 * \note FXS ports will generate the caller ID spill.
894 * \note FXO ports will listen for the caller ID spill.
895 * \note Set from the "usecallerid" value read in from chan_dahdi.conf
897 unsigned int use_callerid:1;
899 * \brief TRUE if we will use the calling presentation setting
900 * from the Asterisk channel for outgoing calls.
901 * \note Only applies to PRI and SS7 channels.
902 * \note Set from the "usecallingpres" value read in from chan_dahdi.conf
904 unsigned int use_callingpres:1;
906 * \brief TRUE if distinctive rings are to be detected.
907 * \note For FXO lines
908 * \note Set indirectly from the "usedistinctiveringdetection" value read in from chan_dahdi.conf
910 unsigned int usedistinctiveringdetection:1;
912 * \brief TRUE if we should use the callerid from incoming call on dahdi transfer.
913 * \note Set from the "useincomingcalleridondahditransfer" value read in from chan_dahdi.conf
915 unsigned int dahditrcallerid:1;
917 * \brief TRUE if allowed to flash-transfer to busy channels.
918 * \note Set from the "transfertobusy" value read in from chan_dahdi.conf
920 unsigned int transfertobusy:1;
922 * \brief TRUE if the FXO port monitors for neon type MWI indications from the other end.
923 * \note Set if the "mwimonitor" value read in contains "neon" from chan_dahdi.conf
925 unsigned int mwimonitor_neon:1;
927 * \brief TRUE if the FXO port monitors for fsk type MWI indications from the other end.
928 * \note Set if the "mwimonitor" value read in contains "fsk" from chan_dahdi.conf
930 unsigned int mwimonitor_fsk:1;
932 * \brief TRUE if the FXO port monitors for rpas precursor to fsk MWI indications from the other end.
933 * \note RPAS - Ring Pulse Alert Signal
934 * \note Set if the "mwimonitor" value read in contains "rpas" from chan_dahdi.conf
936 unsigned int mwimonitor_rpas:1;
937 /*! \brief TRUE if an MWI monitor thread is currently active */
938 unsigned int mwimonitoractive:1;
939 /*! \brief TRUE if a MWI message sending thread is active */
940 unsigned int mwisendactive:1;
942 * \brief TRUE if channel is out of reset and ready
943 * \note Set but not used.
945 unsigned int inservice:1;
947 * \brief TRUE if the channel is locally blocked.
948 * \note Applies to SS7 channels.
950 unsigned int locallyblocked:1;
952 * \brief TRUE if the channel is remotely blocked.
953 * \note Applies to SS7 channels.
955 unsigned int remotelyblocked:1;
956 #if defined(HAVE_PRI)
957 struct sig_pri_pri *pri;
961 #if defined(HAVE_PRI) || defined(HAVE_SS7)
963 * \brief XXX BOOLEAN Purpose???
964 * \note Applies to SS7 channels.
967 /*! \brief TRUE if channel is alerting/ringing */
968 unsigned int alerting:1;
969 /*! \brief TRUE if the call has already gone/hungup */
970 unsigned int alreadyhungup:1;
972 * \brief TRUE if this is an idle call
973 * \note Applies to PRI channels.
975 unsigned int isidlecall:1;
977 * \brief TRUE if call is in a proceeding state.
978 * The call has started working its way through the network.
980 unsigned int proceeding:1;
981 /*! \brief TRUE if the call has seen progress through the network. */
982 unsigned int progress:1;
984 * \brief TRUE if this channel is being reset/restarted
985 * \note Applies to PRI channels.
987 unsigned int resetting:1;
989 * \brief TRUE if this channel has received a SETUP_ACKNOWLEDGE
990 * \note Applies to PRI channels.
992 unsigned int setup_ack:1;
995 * \brief TRUE if SMDI (Simplified Message Desk Interface) is enabled
996 * \note Set from the "usesmdi" value read in from chan_dahdi.conf
998 unsigned int use_smdi:1;
999 struct mwisend_info mwisend_data;
1000 /*! \brief The serial port to listen for SMDI data on */
1001 struct ast_smdi_interface *smdi_iface;
1003 /*! \brief Distinctive Ring data */
1004 struct dahdi_distRings drings;
1007 * \brief The configured context for incoming calls.
1008 * \note The "context" string read in from chan_dahdi.conf
1010 char context[AST_MAX_CONTEXT];
1012 * \brief Saved context string.
1014 char defcontext[AST_MAX_CONTEXT];
1015 /*! \brief Extension to use in the dialplan. */
1016 char exten[AST_MAX_EXTENSION];
1018 * \brief Language configured for calls.
1019 * \note The "language" string read in from chan_dahdi.conf
1021 char language[MAX_LANGUAGE];
1023 * \brief The configured music-on-hold class to use for calls.
1024 * \note The "musicclass" or "mohinterpret" or "musiconhold" string read in from chan_dahdi.conf
1026 char mohinterpret[MAX_MUSICCLASS];
1028 * \brief Suggested music-on-hold class for peer channel to use for calls.
1029 * \note The "mohsuggest" string read in from chan_dahdi.conf
1031 char mohsuggest[MAX_MUSICCLASS];
1032 char parkinglot[AST_MAX_EXTENSION]; /*!< Parking lot for this channel */
1033 #if defined(PRI_ANI) || defined(HAVE_SS7)
1034 /*! \brief Automatic Number Identification number (Alternate PRI caller ID number) */
1035 char cid_ani[AST_MAX_EXTENSION];
1037 /*! \brief Automatic Number Identification code from PRI */
1039 /*! \brief Caller ID number from an incoming call. */
1040 char cid_num[AST_MAX_EXTENSION];
1041 /*! \brief Caller ID Q.931 TON/NPI field values. Set by PRI. Zero otherwise. */
1043 /*! \brief Caller ID name from an incoming call. */
1044 char cid_name[AST_MAX_EXTENSION];
1045 char *origcid_num; /*!< malloced original callerid */
1046 char *origcid_name; /*!< malloced original callerid */
1047 /*! \brief Call waiting number. */
1048 char callwait_num[AST_MAX_EXTENSION];
1049 /*! \brief Call waiting name. */
1050 char callwait_name[AST_MAX_EXTENSION];
1051 /*! \brief Redirecting Directory Number Information Service (RDNIS) number */
1052 char rdnis[AST_MAX_EXTENSION];
1053 /*! \brief Dialed Number Identifier */
1054 char dnid[AST_MAX_EXTENSION];
1056 * \brief Bitmapped groups this belongs to.
1057 * \note The "group" bitmapped group string read in from chan_dahdi.conf
1060 /*! \brief Active PCM encoding format: DAHDI_LAW_ALAW or DAHDI_LAW_MULAW */
1062 int confno; /*!< Our conference */
1063 int confusers; /*!< Who is using our conference */
1064 int propconfno; /*!< Propagated conference number */
1066 * \brief Bitmapped call groups this belongs to.
1067 * \note The "callgroup" bitmapped group string read in from chan_dahdi.conf
1069 ast_group_t callgroup;
1071 * \brief Bitmapped pickup groups this belongs to.
1072 * \note The "pickupgroup" bitmapped group string read in from chan_dahdi.conf
1074 ast_group_t pickupgroup;
1076 * \brief Channel variable list with associated values to set when a channel is created.
1077 * \note The "setvar" strings read in from chan_dahdi.conf
1079 struct ast_variable *vars;
1080 int channel; /*!< Channel Number */
1081 int span; /*!< Span number */
1082 time_t guardtime; /*!< Must wait this much time before using for new call */
1083 int cid_signalling; /*!< CID signalling type bell202 or v23 */
1084 int cid_start; /*!< CID start indicator, polarity or ring */
1085 int callingpres; /*!< The value of calling presentation that we're going to use when placing a PRI call */
1086 int callwaitingrepeat; /*!< How many samples to wait before repeating call waiting */
1087 int cidcwexpire; /*!< When to expire our muting for CID/CW */
1088 /*! \brief Analog caller ID waveform sample buffer */
1089 unsigned char *cidspill;
1090 /*! \brief Position in the cidspill buffer to send out next. */
1092 /*! \brief Length of the cidspill buffer containing samples. */
1094 /*! \brief Ring timeout timer?? */
1097 * \brief Ring timeout base.
1098 * \note Value computed indirectly from "ringtimeout" read in from chan_dahdi.conf
1102 * \brief Number of most significant digits/characters to strip from the dialed number.
1103 * \note Feature is deprecated. Use dialplan logic.
1104 * \note The characters are stripped before the PRI TON/NPI prefix
1105 * characters are processed.
1108 /*! \brief BOOLEAN. XXX Meaning what?? */
1110 /*! \brief Number of call waiting rings. */
1112 /*! \brief Echo cancel parameters. */
1114 struct dahdi_echocanparams head;
1115 struct dahdi_echocanparam params[DAHDI_MAX_ECHOCANPARAMS];
1118 * \brief Echo training time. 0 = disabled
1119 * \note Set from the "echotraining" value read in from chan_dahdi.conf
1122 /*! \brief Filled with 'w'. XXX Purpose?? */
1125 * \brief Number of times to see "busy" tone before hanging up.
1126 * \note Set from the "busycount" value read in from chan_dahdi.conf
1130 * \brief Length of "busy" tone on time.
1131 * \note Set from the "busypattern" value read in from chan_dahdi.conf
1133 int busy_tonelength;
1135 * \brief Length of "busy" tone off time.
1136 * \note Set from the "busypattern" value read in from chan_dahdi.conf
1138 int busy_quietlength;
1140 * \brief Bitmapped call progress detection flags. CALLPROGRESS_xxx values.
1141 * \note Bits set from the "callprogress" and "faxdetect" values read in from chan_dahdi.conf
1145 * \brief Number of milliseconds to wait for dialtone.
1146 * \note Set from the "waitfordialtone" value read in from chan_dahdi.conf
1148 int waitfordialtone;
1149 struct timeval waitingfordt; /*!< Time we started waiting for dialtone */
1150 struct timeval flashtime; /*!< Last flash-hook time */
1151 /*! \brief Opaque DSP configuration structure. */
1152 struct ast_dsp *dsp;
1153 /*! \brief DAHDI dial operation command struct for ioctl() call. */
1154 struct dahdi_dialoperation dop;
1155 int whichwink; /*!< SIG_FEATDMF_TA Which wink are we on? */
1156 /*! \brief Second part of SIG_FEATDMF_TA wink operation. */
1158 char accountcode[AST_MAX_ACCOUNT_CODE]; /*!< Account code */
1159 int amaflags; /*!< AMA Flags */
1160 struct tdd_state *tdd; /*!< TDD flag */
1161 /*! \brief Accumulated call forwarding number. */
1162 char call_forward[AST_MAX_EXTENSION];
1164 * \brief Voice mailbox location.
1165 * \note Set from the "mailbox" string read in from chan_dahdi.conf
1167 char mailbox[AST_MAX_EXTENSION];
1168 /*! \brief Opaque event subscription parameters for message waiting indication support. */
1169 struct ast_event_sub *mwi_event_sub;
1170 /*! \brief Delayed dialing for E911. Overlap digits for ISDN. */
1172 #ifdef HAVE_DAHDI_LINEREVERSE_VMWI
1173 struct dahdi_vmwi_info mwisend_setting; /*!< Which VMWI methods to use */
1174 unsigned int mwisend_fsk: 1; /*! Variable for enabling FSK MWI handling in chan_dahdi */
1175 unsigned int mwisend_rpas:1; /*! Variable for enabling Ring Pulse Alert before MWI FSK Spill */
1177 int distinctivering; /*!< Which distinctivering to use */
1178 int dtmfrelax; /*!< whether to run in relaxed DTMF mode */
1179 /*! \brief Holding place for event injected from outside normal operation. */
1182 * \brief Minimal time period (ms) between the answer polarity
1183 * switch and hangup polarity switch.
1185 int polarityonanswerdelay;
1186 /*! \brief Start delay time if polarityonanswerdelay is nonzero. */
1187 struct timeval polaritydelaytv;
1189 * \brief Send caller ID on FXS after this many rings. Set to 1 for US.
1190 * \note Set from the "sendcalleridafter" value read in from chan_dahdi.conf
1192 int sendcalleridafter;
1193 /*! \brief Current line interface polarity. POLARITY_IDLE, POLARITY_REV */
1195 /*! \brief DSP feature flags: DSP_FEATURE_xxx */
1198 /*! \brief SS7 control parameters */
1199 struct dahdi_ss7 *ss7;
1200 /*! \brief Opaque libss7 call control structure */
1201 struct isup_call *ss7call;
1202 char charge_number[50];
1203 char gen_add_number[50];
1204 char gen_dig_number[50];
1205 char orig_called_num[50];
1206 char redirecting_num[50];
1207 char generic_name[50];
1208 unsigned char gen_add_num_plan;
1209 unsigned char gen_add_nai;
1210 unsigned char gen_add_pres_ind;
1211 unsigned char gen_add_type;
1212 unsigned char gen_dig_type;
1213 unsigned char gen_dig_scheme;
1214 char jip_number[50];
1215 unsigned char lspi_type;
1216 unsigned char lspi_scheme;
1217 unsigned char lspi_context;
1218 char lspi_ident[50];
1219 unsigned int call_ref_ident;
1220 unsigned int call_ref_pc;
1221 unsigned char calling_party_cat;
1223 int cic; /*!< CIC associated with channel */
1224 unsigned int dpc; /*!< CIC's DPC */
1225 unsigned int loopedback:1;
1228 struct dahdi_mfcr2 *mfcr2;
1229 openr2_chan_t *r2chan;
1230 openr2_calling_party_category_t mfcr2_recvd_category;
1231 openr2_calling_party_category_t mfcr2_category;
1232 int mfcr2_dnis_index;
1233 int mfcr2_ani_index;
1235 int mfcr2_answer_pending:1;
1236 int mfcr2_charge_calls:1;
1237 int mfcr2_allow_collect_calls:1;
1238 int mfcr2_forced_release:1;
1239 int mfcr2_dnis_matched:1;
1240 int mfcr2_call_accepted:1;
1241 int mfcr2_accept_on_offer:1;
1243 /*! \brief DTMF digit in progress. 0 when no digit in progress. */
1245 /*! \brief TRUE if confrence is muted. */
1248 } *iflist = NULL, *ifend = NULL;
1250 /*! \brief Channel configuration from chan_dahdi.conf .
1251 * This struct is used for parsing the [channels] section of chan_dahdi.conf.
1252 * Generally there is a field here for every possible configuration item.
1254 * The state of fields is saved along the parsing and whenever a 'channel'
1255 * statement is reached, the current dahdi_chan_conf is used to configure the
1256 * channel (struct dahdi_pvt)
1258 * \see dahdi_chan_init for the default values.
1260 struct dahdi_chan_conf {
1261 struct dahdi_pvt chan;
1263 struct dahdi_pri pri;
1267 struct dahdi_ss7 ss7;
1271 struct dahdi_mfcr2_conf mfcr2;
1273 struct dahdi_params timing;
1274 int is_sig_auto; /*!< Use channel signalling from DAHDI? */
1277 * \brief The serial port to listen for SMDI data on
1278 * \note Set from the "smdiport" string read in from chan_dahdi.conf
1280 char smdi_port[SMDI_MAX_FILENAME_LEN];
1283 /*! returns a new dahdi_chan_conf with default values (by-value) */
1284 static struct dahdi_chan_conf dahdi_chan_conf_default(void)
1286 /* recall that if a field is not included here it is initialized
1287 * to 0 or equivalent
1289 struct dahdi_chan_conf conf = {
1292 .nsf = PRI_NSF_NONE,
1293 .switchtype = PRI_SWITCH_NI2,
1294 .dialplan = PRI_UNKNOWN + 1,
1295 .localdialplan = PRI_NATIONAL_ISDN + 1,
1296 .nodetype = PRI_CPE,
1297 .qsigchannelmapping = DAHDI_CHAN_MAPPING_PHYSICAL,
1302 .internationalprefix = "",
1303 .nationalprefix = "",
1305 .privateprefix = "",
1306 .unknownprefix = "",
1307 .resetinterval = -1,
1312 .called_nai = SS7_NAI_NATIONAL,
1313 .calling_nai = SS7_NAI_NATIONAL,
1314 .internationalprefix = "",
1315 .nationalprefix = "",
1316 .subscriberprefix = "",
1322 .variant = OR2_VAR_ITU,
1323 .mfback_timeout = -1,
1324 .metering_pulse_timeout = -1,
1327 .get_ani_first = -1,
1328 #if defined(OR2_LIB_INTERFACE) && OR2_LIB_INTERFACE > 1
1329 .skip_category_request = -1,
1332 .allow_collect_calls = 0,
1334 .accept_on_offer = 1,
1335 .forced_release = 0,
1337 .immediate_accept = -1,
1340 .loglevel = OR2_LOG_ERROR | OR2_LOG_WARNING,
1341 .category = OR2_CALLING_PARTY_CATEGORY_NATIONAL_SUBSCRIBER
1345 .context = "default",
1348 .mohinterpret = "default",
1351 .transfertobusy = 1,
1353 .cid_signalling = CID_SIG_BELL,
1354 .cid_start = CID_START_RING,
1355 .dahditrcallerid = 0,
1364 .echocancel.head.tap_length = 1,
1372 #ifdef HAVE_DAHDI_LINEREVERSE_VMWI
1375 .polarityonanswerdelay = 600,
1377 .sendcalleridafter = DEFAULT_CIDRINGS,
1379 .buf_policy = DAHDI_POLICY_IMMEDIATE,
1394 .smdi_port = "/dev/ttyS0",
1401 static struct ast_channel *dahdi_request(const char *type, int format, const struct ast_channel *requestor, void *data, int *cause);
1402 static int dahdi_digit_begin(struct ast_channel *ast, char digit);
1403 static int dahdi_digit_end(struct ast_channel *ast, char digit, unsigned int duration);
1404 static int dahdi_sendtext(struct ast_channel *c, const char *text);
1405 static int dahdi_call(struct ast_channel *ast, char *rdest, int timeout);
1406 static int dahdi_hangup(struct ast_channel *ast);
1407 static int dahdi_answer(struct ast_channel *ast);
1408 static struct ast_frame *dahdi_read(struct ast_channel *ast);
1409 static int dahdi_write(struct ast_channel *ast, struct ast_frame *frame);
1410 static struct ast_frame *dahdi_exception(struct ast_channel *ast);
1411 static int dahdi_indicate(struct ast_channel *chan, int condition, const void *data, size_t datalen);
1412 static int dahdi_fixup(struct ast_channel *oldchan, struct ast_channel *newchan);
1413 static int dahdi_setoption(struct ast_channel *chan, int option, void *data, int datalen);
1414 static int dahdi_queryoption(struct ast_channel *chan, int option, void *data, int *datalen);
1415 static int dahdi_func_read(struct ast_channel *chan, const char *function, char *data, char *buf, size_t len);
1416 static int handle_init_event(struct dahdi_pvt *i, int event);
1417 static int dahdi_func_write(struct ast_channel *chan, const char *function, char *data, const char *value);
1419 static const struct ast_channel_tech dahdi_tech = {
1421 .description = tdesc,
1422 .capabilities = AST_FORMAT_SLINEAR | AST_FORMAT_ULAW | AST_FORMAT_ALAW,
1423 .requester = dahdi_request,
1424 .send_digit_begin = dahdi_digit_begin,
1425 .send_digit_end = dahdi_digit_end,
1426 .send_text = dahdi_sendtext,
1428 .hangup = dahdi_hangup,
1429 .answer = dahdi_answer,
1431 .write = dahdi_write,
1432 .bridge = dahdi_bridge,
1433 .exception = dahdi_exception,
1434 .indicate = dahdi_indicate,
1435 .fixup = dahdi_fixup,
1436 .setoption = dahdi_setoption,
1437 .queryoption = dahdi_queryoption,
1438 .func_channel_read = dahdi_func_read,
1439 .func_channel_write = dahdi_func_write,
1442 #define GET_CHANNEL(p) ((p)->channel)
1444 #define SIG_PRI_LIB_HANDLE_CASES \
1451 * \brief Determine if sig_pri handles the signaling.
1454 * \param signaling Signaling to determine if is for sig_pri.
1456 * \return TRUE if the signaling is for sig_pri.
1458 static inline int dahdi_sig_pri_lib_handles(int signaling)
1462 switch (signaling) {
1463 case SIG_PRI_LIB_HANDLE_CASES:
1474 static enum analog_sigtype dahdisig_to_analogsig(int sig)
1478 return ANALOG_SIG_FXOLS;
1480 return ANALOG_SIG_FXOGS;
1482 return ANALOG_SIG_FXOKS;
1484 return ANALOG_SIG_FXSLS;
1486 return ANALOG_SIG_FXSGS;
1488 return ANALOG_SIG_FXSKS;
1490 return ANALOG_SIG_EMWINK;
1492 return ANALOG_SIG_EM;
1494 return ANALOG_SIG_EM_E1;
1496 return ANALOG_SIG_FEATD;
1498 return ANALOG_SIG_FEATDMF;
1502 return ANALOG_SIG_FGC_CAMA;
1503 case SIG_FGC_CAMAMF:
1504 return ANALOG_SIG_FGC_CAMAMF;
1506 return ANALOG_SIG_FEATB;
1508 return ANALOG_SIG_SFWINK;
1510 return ANALOG_SIG_SF;
1512 return ANALOG_SIG_SF_FEATD;
1513 case SIG_SF_FEATDMF:
1514 return ANALOG_SIG_SF_FEATDMF;
1515 case SIG_FEATDMF_TA:
1516 return ANALOG_SIG_FEATDMF_TA;
1518 return ANALOG_SIG_FEATB;
1525 static int analog_tone_to_dahditone(enum analog_tone tone)
1528 case ANALOG_TONE_RINGTONE:
1529 return DAHDI_TONE_RINGTONE;
1530 case ANALOG_TONE_STUTTER:
1531 return DAHDI_TONE_STUTTER;
1532 case ANALOG_TONE_CONGESTION:
1533 return DAHDI_TONE_CONGESTION;
1534 case ANALOG_TONE_DIALTONE:
1535 return DAHDI_TONE_DIALTONE;
1536 case ANALOG_TONE_DIALRECALL:
1537 return DAHDI_TONE_DIALRECALL;
1538 case ANALOG_TONE_INFO:
1539 return DAHDI_TONE_INFO;
1545 static int analogsub_to_dahdisub(enum analog_sub analogsub)
1549 switch (analogsub) {
1550 case ANALOG_SUB_REAL:
1553 case ANALOG_SUB_CALLWAIT:
1554 index = SUB_CALLWAIT;
1556 case ANALOG_SUB_THREEWAY:
1557 index = SUB_THREEWAY;
1560 ast_log(LOG_ERROR, "Unidentified sub!\n");
1567 static enum analog_event dahdievent_to_analogevent(int event);
1568 static int bump_gains(struct dahdi_pvt *p);
1569 static int dahdi_setlinear(int dfd, int linear);
1571 static int my_start_cid_detect(void *pvt, int cid_signalling)
1573 struct dahdi_pvt *p = pvt;
1574 int index = SUB_REAL;
1575 p->cs = callerid_new(cid_signalling);
1577 ast_log(LOG_ERROR, "Unable to alloc callerid\n");
1581 dahdi_setlinear(p->subs[index].dfd, 0);
1586 static int my_stop_cid_detect(void *pvt)
1588 struct dahdi_pvt *p = pvt;
1589 int index = SUB_REAL;
1591 callerid_free(p->cs);
1592 dahdi_setlinear(p->subs[index].dfd, p->subs[index].linear);
1596 static int my_get_callerid(void *pvt, char *namebuf, char *numbuf, enum analog_event *ev, size_t timeout)
1598 struct dahdi_pvt *p = pvt;
1599 struct analog_pvt *analog_p = p->sig_pvt;
1600 struct pollfd poller;
1602 int index = SUB_REAL;
1604 unsigned char buf[256];
1607 poller.fd = p->subs[SUB_REAL].dfd;
1608 poller.events = POLLPRI | POLLIN;
1611 res = poll(&poller, 1, timeout);
1613 if (poller.revents & POLLPRI) {
1614 *ev = dahdievent_to_analogevent(dahdi_get_event(p->subs[SUB_REAL].dfd));
1618 if (poller.revents & POLLIN) {
1620 /* Change API: remove cid_signalling from get_callerid, add a new start_cid_detect and stop_cid_detect function
1621 * to enable slin mode and allocate cid detector. get_callerid should be able to be called any number of times until
1622 * either a timeout occurs or CID is detected (returns 0). returning 1 should be event received, and -1 should be
1623 * a failure and die, and returning 2 means no event was received. */
1624 res = read(p->subs[index].dfd, buf, sizeof(buf));
1626 if (errno != ELAST) {
1627 ast_log(LOG_WARNING, "read returned error: %s\n", strerror(errno));
1628 callerid_free(p->cs);
1633 if (analog_p->ringt) {
1636 if (analog_p->ringt == 1) {
1640 if (p->cid_signalling == CID_SIG_V23_JP) {
1641 res = callerid_feed_jp(p->cs, buf, res, AST_LAW(p));
1643 res = callerid_feed(p->cs, buf, res, AST_LAW(p));
1647 ast_log(LOG_WARNING, "CallerID feed failed: %s\n", strerror(errno));
1652 callerid_get(p->cs, &name, &num, &flags);
1654 ast_copy_string(namebuf, name, ANALOG_MAX_CID);
1656 ast_copy_string(numbuf, num, ANALOG_MAX_CID);
1658 ast_log(LOG_DEBUG, "CallerID number: %s, name: %s, flags=%d\n", num, name, flags);
1663 *ev = ANALOG_EVENT_NONE;
1667 static const char *event2str(int event);
1668 static int restore_gains(struct dahdi_pvt *p);
1670 static int my_distinctive_ring(struct ast_channel *chan, void *pvt, int idx, int *ringdata)
1672 unsigned char buf[256];
1680 int checkaftercid = 0;
1682 struct dahdi_pvt *p = pvt;
1683 struct analog_pvt *analog_p = p->sig_pvt;
1685 if (ringdata == NULL) {
1686 ringdata = curRingData;
1691 /* We must have a ring by now, so, if configured, lets try to listen for
1692 * distinctive ringing */
1693 if ((checkaftercid && distinctiveringaftercid) || !checkaftercid) {
1694 /* Clear the current ring data array so we dont have old data in it. */
1695 for (receivedRingT = 0; receivedRingT < ARRAY_LEN(ringdata); receivedRingT++)
1696 ringdata[receivedRingT] = 0;
1698 if (checkaftercid && distinctiveringaftercid)
1699 ast_verb(3, "Detecting post-CID distinctive ring\n");
1700 /* Check to see if context is what it should be, if not set to be. */
1701 else if (strcmp(p->context,p->defcontext) != 0) {
1702 ast_copy_string(p->context, p->defcontext, sizeof(p->context));
1703 ast_copy_string(chan->context,p->defcontext,sizeof(chan->context));
1707 i = DAHDI_IOMUX_READ | DAHDI_IOMUX_SIGEVENT;
1708 if ((res = ioctl(p->subs[idx].dfd, DAHDI_IOMUX, &i))) {
1709 ast_log(LOG_WARNING, "I/O MUX failed: %s\n", strerror(errno));
1713 if (i & DAHDI_IOMUX_SIGEVENT) {
1714 res = dahdi_get_event(p->subs[idx].dfd);
1715 ast_log(LOG_NOTICE, "Got event %d (%s)...\n", res, event2str(res));
1717 /* Let us detect distinctive ring */
1719 ringdata[receivedRingT] = analog_p->ringt;
1721 if (analog_p->ringt < analog_p->ringt_base/2)
1723 /* Increment the ringT counter so we can match it against
1724 values in chan_dahdi.conf for distinctive ring */
1725 if (++receivedRingT == ARRAY_LEN(ringdata))
1727 } else if (i & DAHDI_IOMUX_READ) {
1728 res = read(p->subs[idx].dfd, buf, sizeof(buf));
1730 if (errno != ELAST) {
1731 ast_log(LOG_WARNING, "read returned error: %s\n", strerror(errno));
1737 if (analog_p->ringt)
1739 if (analog_p->ringt == 1) {
1746 if ((checkaftercid && usedistinctiveringdetection) || !checkaftercid) {
1747 /* this only shows up if you have n of the dring patterns filled in */
1748 ast_verb(3, "Detected ring pattern: %d,%d,%d\n",ringdata[0],ringdata[1],ringdata[2]);
1749 for (counter = 0; counter < 3; counter++) {
1750 /* Check to see if the rings we received match any of the ones in chan_dahdi.conf for this channel */
1752 /* this only shows up if you have n of the dring patterns filled in */
1753 ast_verb(3, "Checking %d,%d,%d\n",
1754 p->drings.ringnum[counter].ring[0],
1755 p->drings.ringnum[counter].ring[1],
1756 p->drings.ringnum[counter].ring[2]);
1757 for (counter1 = 0; counter1 < 3; counter1++) {
1758 ast_verb(3, "Ring pattern check range: %d\n", p->drings.ringnum[counter].range);
1759 if (p->drings.ringnum[counter].ring[counter1] == -1) {
1760 ast_verb(3, "Pattern ignore (-1) detected, so matching pattern %d regardless.\n",
1761 ringdata[counter1]);
1763 } else if (ringdata[counter1] <= (p->drings.ringnum[counter].ring[counter1] + p->drings.ringnum[counter].range) &&
1764 ringdata[counter1] >= (p->drings.ringnum[counter].ring[counter1] - p->drings.ringnum[counter].range)) {
1765 ast_verb(3, "Ring pattern matched in range: %d to %d\n",
1766 (p->drings.ringnum[counter].ring[counter1] - p->drings.ringnum[counter].range),
1767 (p->drings.ringnum[counter].ring[counter1] + p->drings.ringnum[counter].range));
1772 if (distMatches == 3) {
1773 /* The ring matches, set the context to whatever is for distinctive ring.. */
1774 ast_copy_string(p->context, p->drings.ringContext[counter].contextData, sizeof(p->context));
1775 ast_copy_string(chan->context, p->drings.ringContext[counter].contextData, sizeof(chan->context));
1776 ast_verb(3, "Distinctive Ring matched context %s\n",p->context);
1781 /* Restore linear mode (if appropriate) for Caller*ID processing */
1782 dahdi_setlinear(p->subs[idx].dfd, p->subs[idx].linear);
1788 static int send_callerid(struct dahdi_pvt *p);
1790 static int my_stop_callwait(void *pvt)
1792 struct dahdi_pvt *p = pvt;
1793 p->callwaitingrepeat = 0;
1799 static int save_conference(struct dahdi_pvt *p);
1801 static int my_callwait(void *pvt)
1803 struct dahdi_pvt *p = pvt;
1804 p->callwaitingrepeat = CALLWAITING_REPEAT_SAMPLES;
1806 ast_log(LOG_WARNING, "Spill already exists?!?\n");
1809 if (!(p->cidspill = ast_malloc(2400 /* SAS */ + 680 /* CAS */ + READ_SIZE * 4)))
1813 memset(p->cidspill, 0x7f, 2400 + 600 + READ_SIZE * 4);
1814 if (!p->callwaitrings && p->callwaitingcallerid) {
1815 ast_gen_cas(p->cidspill, 1, 2400 + 680, AST_LAW(p));
1817 p->cidlen = 2400 + 680 + READ_SIZE * 4;
1819 ast_gen_cas(p->cidspill, 1, 2400, AST_LAW(p));
1821 p->cidlen = 2400 + READ_SIZE * 4;
1829 static int my_send_callerid(void *pvt, int cwcid, struct ast_callerid *cid)
1831 struct dahdi_pvt *p = pvt;
1833 ast_debug(2, "Starting cid spill\n");
1836 ast_log(LOG_WARNING, "cidspill already exists??\n");
1840 if ((p->cidspill = ast_malloc(MAX_CALLERID_SIZE))) {
1842 p->cidlen = ast_callerid_generate(p->cidspill, cid->cid_name, cid->cid_num, AST_LAW(p));
1846 p->cidlen = ast_callerid_callwaiting_generate(p->cidspill, cid->cid_name, cid->cid_num, AST_LAW(p));
1847 p->cidlen += READ_SIZE * 4;
1855 static int my_dsp_reset_and_flush_digits(void *pvt)
1857 struct dahdi_pvt *p = pvt;
1859 ast_dsp_digitreset(p->dsp);
1864 static int my_dsp_set_digitmode(void *pvt, enum analog_dsp_digitmode mode)
1866 struct dahdi_pvt *p = pvt;
1868 if (p->channel == CHAN_PSEUDO)
1869 ast_log(LOG_ERROR, "You have assumed incorrectly sir!\n");
1871 if (mode == ANALOG_DIGITMODE_DTMF) {
1872 /* If we do hardware dtmf, no need for a DSP */
1873 if (p->hardwaredtmf) {
1875 ast_dsp_free(p->dsp);
1882 p->dsp = ast_dsp_new();
1884 ast_log(LOG_ERROR, "Unable to allocate DSP\n");
1889 ast_dsp_set_digitmode(p->dsp, DSP_DIGITMODE_DTMF | p->dtmfrelax);
1890 } else if (mode == ANALOG_DIGITMODE_MF) {
1892 p->dsp = ast_dsp_new();
1894 ast_log(LOG_ERROR, "Unable to allocate DSP\n");
1898 ast_dsp_set_digitmode(p->dsp, DSP_DIGITMODE_MF | p->dtmfrelax);
1903 static int dahdi_wink(struct dahdi_pvt *p, int index);
1905 static int my_wink(void *pvt, enum analog_sub sub)
1907 struct dahdi_pvt *p = pvt;
1908 int index = analogsub_to_dahdisub(sub);
1909 if (index != SUB_REAL) {
1910 ast_log(LOG_ERROR, "We used a sub other than SUB_REAL (incorrect assumption sir)\n");
1912 return dahdi_wink(p, index);
1915 static void wakeup_sub(struct dahdi_pvt *p, int a);
1917 static int reset_conf(struct dahdi_pvt *p);
1919 static inline int dahdi_confmute(struct dahdi_pvt *p, int muted);
1921 static void my_handle_dtmfup(void *pvt, struct ast_channel *ast, enum analog_sub analog_index, struct ast_frame **dest)
1923 struct ast_frame *f = *dest;
1924 struct dahdi_pvt *p = pvt;
1925 int idx = analogsub_to_dahdisub(analog_index);
1927 ast_debug(1, "DTMF digit: %c on %s\n", f->subclass, ast->name);
1929 if (f->subclass == 'f') {
1930 /* Fax tone -- Handle and return NULL */
1931 if ((p->callprogress & CALLPROGRESS_FAX) && !p->faxhandled) {
1932 /* If faxbuffers are configured, use them for the fax transmission */
1933 if (p->usefaxbuffers && !p->bufferoverrideinuse) {
1934 struct dahdi_bufferinfo bi = {
1935 .txbufpolicy = p->faxbuf_policy,
1936 .bufsize = p->bufsize,
1937 .numbufs = p->faxbuf_no
1941 if ((res = ioctl(p->subs[idx].dfd, DAHDI_SET_BUFINFO, &bi)) < 0) {
1942 ast_log(LOG_WARNING, "Channel '%s' unable to set buffer policy, reason: %s\n", ast->name, strerror(errno));
1944 p->bufferoverrideinuse = 1;
1948 if (strcmp(ast->exten, "fax")) {
1949 const char *target_context = S_OR(ast->macrocontext, ast->context);
1951 /* We need to unlock 'ast' here because ast_exists_extension has the
1952 * potential to start autoservice on the channel. Such action is prone
1955 ast_mutex_unlock(&p->lock);
1956 ast_channel_unlock(ast);
1957 if (ast_exists_extension(ast, target_context, "fax", 1, ast->cid.cid_num)) {
1958 ast_channel_lock(ast);
1959 ast_mutex_lock(&p->lock);
1960 ast_verb(3, "Redirecting %s to fax extension\n", ast->name);
1961 /* Save the DID/DNIS when we transfer the fax call to a "fax" extension */
1962 pbx_builtin_setvar_helper(ast, "FAXEXTEN", ast->exten);
1963 if (ast_async_goto(ast, target_context, "fax", 1))
1964 ast_log(LOG_WARNING, "Failed to async goto '%s' into fax of '%s'\n", ast->name, target_context);
1966 ast_channel_lock(ast);
1967 ast_mutex_lock(&p->lock);
1968 ast_log(LOG_NOTICE, "Fax detected, but no fax extension\n");
1971 ast_debug(1, "Already in a fax extension, not redirecting\n");
1974 ast_debug(1, "Fax already handled\n");
1976 dahdi_confmute(p, 0);
1977 p->subs[idx].f.frametype = AST_FRAME_NULL;
1978 p->subs[idx].f.subclass = 0;
1979 *dest = &p->subs[idx].f;
1983 static void my_lock_private(void *pvt)
1985 struct dahdi_pvt *p = pvt;
1986 ast_mutex_lock(&p->lock);
1989 static void my_unlock_private(void *pvt)
1991 struct dahdi_pvt *p = pvt;
1992 ast_mutex_unlock(&p->lock);
1995 static int my_set_linear_mode(void *pvt, int idx, int linear_mode)
1997 struct dahdi_pvt *p = pvt;
1999 linear_mode = p->subs[idx].linear;
2000 return dahdi_setlinear(p->subs[idx].dfd, linear_mode);
2003 static int get_alarms(struct dahdi_pvt *p);
2004 static void handle_alarms(struct dahdi_pvt *p, int alms);
2005 static void my_get_and_handle_alarms(void *pvt)
2008 struct dahdi_pvt *p = pvt;
2010 res = get_alarms(p);
2011 handle_alarms(p, res);
2014 static void *my_get_sigpvt_bridged_channel(struct ast_channel *chan)
2016 struct dahdi_pvt *p = ast_bridged_channel(chan)->tech_pvt;
2023 static int my_get_sub_fd(void *pvt, enum analog_sub sub)
2025 struct dahdi_pvt *p = pvt;
2026 int dahdi_sub = analogsub_to_dahdisub(sub);
2027 return p->subs[dahdi_sub].dfd;
2030 static void my_set_cadence(void *pvt, int *cidrings, struct ast_channel *ast)
2032 struct dahdi_pvt *p = pvt;
2034 /* Choose proper cadence */
2035 if ((p->distinctivering > 0) && (p->distinctivering <= num_cadence)) {
2036 if (ioctl(p->subs[SUB_REAL].dfd, DAHDI_SETCADENCE, &cadences[p->distinctivering - 1]))
2037 ast_log(LOG_WARNING, "Unable to set distinctive ring cadence %d on '%s': %s\n", p->distinctivering, ast->name, strerror(errno));
2038 *cidrings = cidrings[p->distinctivering - 1];
2040 if (ioctl(p->subs[SUB_REAL].dfd, DAHDI_SETCADENCE, NULL))
2041 ast_log(LOG_WARNING, "Unable to reset default ring on '%s': %s\n", ast->name, strerror(errno));
2042 *cidrings = p->sendcalleridafter;
2046 static void my_set_dialing(void *pvt, int flag)
2048 struct dahdi_pvt *p = pvt;
2052 static void my_set_ringtimeout(void *pvt, int ringt)
2054 struct dahdi_pvt *p = pvt;
2058 static void my_set_waitingfordt(void *pvt, struct ast_channel *ast)
2060 struct dahdi_pvt *p = pvt;
2062 if (p->waitfordialtone && CANPROGRESSDETECT(p) && p->dsp) {
2063 ast_log(LOG_DEBUG, "Defer dialing for %dms or dialtone\n", p->waitfordialtone);
2064 gettimeofday(&p->waitingfordt, NULL);
2065 ast_setstate(ast, AST_STATE_OFFHOOK);
2069 static int my_check_waitingfordt(void *pvt)
2071 struct dahdi_pvt *p = pvt;
2073 if (p->waitingfordt.tv_usec) {
2080 static void my_set_confirmanswer(void *pvt, int flag)
2082 struct dahdi_pvt *p = pvt;
2083 p->confirmanswer = flag;
2086 static int my_check_confirmanswer(void *pvt)
2088 struct dahdi_pvt *p = pvt;
2089 if (p->confirmanswer) {
2096 static void my_increase_ss_count(void)
2098 ast_mutex_lock(&ss_thread_lock);
2100 ast_mutex_unlock(&ss_thread_lock);
2103 static void my_decrease_ss_count(void)
2105 ast_mutex_lock(&ss_thread_lock);
2107 ast_cond_signal(&ss_thread_complete);
2108 ast_mutex_unlock(&ss_thread_lock);
2111 static void my_all_subchannels_hungup(void *pvt)
2113 struct dahdi_pvt *p = pvt;
2120 ast_dsp_free(p->dsp);
2124 law = DAHDI_LAW_DEFAULT;
2125 res = ioctl(p->subs[SUB_REAL].dfd, DAHDI_SETLAW, &law);
2127 ast_log(LOG_WARNING, "Unable to set law on channel %d to default: %s\n", p->channel, strerror(errno));
2129 dahdi_setlinear(p->subs[SUB_REAL].dfd, 0);
2135 /* Cleanup owners here */
2136 for (i = 0; i < 3; i++) {
2137 p->subs[i].owner = NULL;
2143 if (num_restart_pending == 0) {
2148 static int conf_del(struct dahdi_pvt *p, struct dahdi_subchannel *c, int index);
2150 static int my_conf_del(void *pvt, enum analog_sub sub)
2152 struct dahdi_pvt *p = pvt;
2153 int x = analogsub_to_dahdisub(sub);
2155 return conf_del(p, &p->subs[x], x);
2158 static int conf_add(struct dahdi_pvt *p, struct dahdi_subchannel *c, int index, int slavechannel);
2160 static int my_conf_add(void *pvt, enum analog_sub sub)
2162 struct dahdi_pvt *p = pvt;
2163 int x = analogsub_to_dahdisub(sub);
2165 return conf_add(p, &p->subs[x], x, 0);
2168 static int isslavenative(struct dahdi_pvt *p, struct dahdi_pvt **out);
2170 static int my_complete_conference_update(void *pvt, int needconference)
2172 struct dahdi_pvt *p = pvt;
2173 int needconf = needconference;
2176 struct dahdi_pvt *slave = NULL;
2178 useslavenative = isslavenative(p, &slave);
2180 /* If we have a slave, add him to our conference now. or DAX
2181 if this is slave native */
2182 for (x = 0; x < MAX_SLAVES; x++) {
2185 conf_add(p, &p->slaves[x]->subs[SUB_REAL], SUB_REAL, GET_CHANNEL(p));
2187 conf_add(p, &p->slaves[x]->subs[SUB_REAL], SUB_REAL, 0);
2192 /* If we're supposed to be in there, do so now */
2193 if (p->inconference && !p->subs[SUB_REAL].inthreeway) {
2195 conf_add(p, &p->subs[SUB_REAL], SUB_REAL, GET_CHANNEL(slave));
2197 conf_add(p, &p->subs[SUB_REAL], SUB_REAL, 0);
2201 /* If we have a master, add ourselves to his conference */
2203 if (isslavenative(p->master, NULL)) {
2204 conf_add(p->master, &p->subs[SUB_REAL], SUB_REAL, GET_CHANNEL(p->master));
2206 conf_add(p->master, &p->subs[SUB_REAL], SUB_REAL, 0);
2210 /* Nobody is left (or should be left) in our conference.
2218 static int check_for_conference(struct dahdi_pvt *p);
2220 static int my_check_for_conference(void *pvt)
2222 struct dahdi_pvt *p = pvt;
2223 return check_for_conference(p);
2226 static void my_swap_subchannels(void *pvt, enum analog_sub a, struct ast_channel *ast_a, enum analog_sub b, struct ast_channel *ast_b)
2228 struct dahdi_pvt *p = pvt;
2232 da = analogsub_to_dahdisub(a);
2233 db = analogsub_to_dahdisub(b);
2235 tchan = p->subs[da].chan;
2237 p->subs[da].chan = p->subs[db].chan;
2239 p->subs[db].chan = tchan;
2242 ast_channel_set_fd(ast_a, 0, p->subs[da].dfd);
2244 ast_channel_set_fd(ast_b, 0, p->subs[db].dfd);
2246 p->subs[da].owner = ast_a;
2247 p->subs[db].owner = ast_b;
2255 static struct ast_channel *dahdi_new(struct dahdi_pvt *, int, int, int, int, int, const char *);
2257 static struct ast_channel *my_new_analog_ast_channel(void *pvt, int state, int startpbx, enum analog_sub sub, const struct ast_channel *requestor)
2259 struct dahdi_pvt *p = pvt;
2260 int dsub = analogsub_to_dahdisub(sub);
2262 return dahdi_new(p, state, startpbx, dsub, 0, 0, requestor ? requestor->linkedid : "");
2265 #if defined(HAVE_PRI) || defined(HAVE_SS7)
2266 static int dahdi_setlaw(int dfd, int law)
2269 res = ioctl(dfd, DAHDI_SETLAW, &law);
2276 #if defined(HAVE_PRI)
2277 static struct ast_channel *my_new_pri_ast_channel(void *pvt, int state, int startpbx, enum sig_pri_law law, int transfercapability, char *exten, const struct ast_channel *requestor)
2279 struct dahdi_pvt *p = pvt;
2283 /* Set to audio mode at this point */
2285 if (ioctl(p->subs[SUB_REAL].dfd, DAHDI_AUDIOMODE, &audio) == -1)
2286 ast_log(LOG_WARNING, "Unable to set audio mode on channel %d to %d: %s\n", p->channel, audio, strerror(errno));
2288 if (law != SIG_PRI_DEFLAW) {
2289 dahdi_setlaw(p->subs[SUB_REAL].dfd, (law == SIG_PRI_ULAW) ? DAHDI_LAW_MULAW : DAHDI_LAW_ALAW);
2292 ast_copy_string(p->exten, exten, sizeof(p->exten));
2295 case SIG_PRI_DEFLAW:
2299 newlaw = DAHDI_LAW_ALAW;
2302 newlaw = DAHDI_LAW_MULAW;
2305 return dahdi_new(p, state, startpbx, SUB_REAL, newlaw, transfercapability, requestor ? requestor->linkedid : "");
2307 #endif /* defined(HAVE_PRI) */
2309 static int unalloc_sub(struct dahdi_pvt *p, int x);
2311 static int my_unallocate_sub(void *pvt, enum analog_sub analogsub)
2313 struct dahdi_pvt *p = pvt;
2315 return unalloc_sub(p, analogsub_to_dahdisub(analogsub));
2318 static int alloc_sub(struct dahdi_pvt *p, int x);
2320 static int my_allocate_sub(void *pvt, enum analog_sub analogsub)
2322 struct dahdi_pvt *p = pvt;
2324 return alloc_sub(p, analogsub_to_dahdisub(analogsub));
2327 static int has_voicemail(struct dahdi_pvt *p);
2329 static int my_has_voicemail(void *pvt)
2331 struct dahdi_pvt *p = pvt;
2333 return has_voicemail(p);
2336 static int my_play_tone(void *pvt, enum analog_sub sub, enum analog_tone tone)
2338 struct dahdi_pvt *p = pvt;
2341 index = analogsub_to_dahdisub(sub);
2343 return tone_zone_play_tone(p->subs[index].dfd, analog_tone_to_dahditone(tone));
2346 static enum analog_event dahdievent_to_analogevent(int event)
2348 enum analog_event res = ANALOG_EVENT_ERROR;
2351 case DAHDI_EVENT_DIALCOMPLETE:
2352 res = ANALOG_EVENT_DIALCOMPLETE;
2354 case DAHDI_EVENT_WINKFLASH:
2355 res = ANALOG_EVENT_WINKFLASH;
2357 case DAHDI_EVENT_ONHOOK:
2358 res = ANALOG_EVENT_ONHOOK;
2360 case DAHDI_EVENT_RINGOFFHOOK:
2361 res = ANALOG_EVENT_RINGOFFHOOK;
2363 case DAHDI_EVENT_ALARM:
2364 res = ANALOG_EVENT_ALARM;
2366 case DAHDI_EVENT_NOALARM:
2367 res = ANALOG_EVENT_NOALARM;
2369 case DAHDI_EVENT_HOOKCOMPLETE:
2370 res = ANALOG_EVENT_HOOKCOMPLETE;
2372 case DAHDI_EVENT_POLARITY:
2373 res = ANALOG_EVENT_POLARITY;
2375 case DAHDI_EVENT_RINGERON:
2376 res = ANALOG_EVENT_RINGERON;
2378 case DAHDI_EVENT_RINGEROFF:
2379 res = ANALOG_EVENT_RINGEROFF;
2381 case DAHDI_EVENT_RINGBEGIN:
2382 res = ANALOG_EVENT_RINGBEGIN;
2384 case DAHDI_EVENT_PULSE_START:
2385 res = ANALOG_EVENT_PULSE_START;
2387 case DAHDI_EVENT_NEONMWI_ACTIVE:
2388 res = ANALOG_EVENT_NEONMWI_ACTIVE;
2390 case DAHDI_EVENT_NEONMWI_INACTIVE:
2391 res = ANALOG_EVENT_NEONMWI_INACTIVE;
2398 static inline int dahdi_wait_event(int fd);
2400 static int my_wait_event(void *pvt)
2402 struct dahdi_pvt *p = pvt;
2404 return dahdi_wait_event(p->subs[SUB_REAL].dfd);
2407 static int my_get_event(void *pvt)
2409 struct dahdi_pvt *p = pvt;
2412 if (p->fake_event) {
2413 res = p->fake_event;
2416 res = dahdi_get_event(p->subs[SUB_REAL].dfd);
2418 return dahdievent_to_analogevent(res);
2421 static int my_is_off_hook(void *pvt)
2423 struct dahdi_pvt *p = pvt;
2425 struct dahdi_params par;
2427 if (p->subs[SUB_REAL].dfd > -1)
2428 res = ioctl(p->subs[SUB_REAL].dfd, DAHDI_GET_PARAMS, &par);
2430 /* Assume not off hook on CVRS */
2432 par.rxisoffhook = 0;
2435 ast_log(LOG_WARNING, "Unable to check hook state on channel %d: %s\n", p->channel, strerror(errno));
2438 if ((p->sig == SIG_FXSKS) || (p->sig == SIG_FXSGS)) {
2439 /* When "onhook" that means no battery on the line, and thus
2440 it is out of service..., if it's on a TDM card... If it's a channel
2441 bank, there is no telling... */
2442 return (par.rxbits > -1) || par.rxisoffhook;
2445 return par.rxisoffhook;
2448 static void dahdi_enable_ec(struct dahdi_pvt *p);
2449 static void dahdi_disable_ec(struct dahdi_pvt *p);
2451 static int my_set_echocanceller(void *pvt, int enable)
2453 struct dahdi_pvt *p = pvt;
2458 dahdi_disable_ec(p);
2463 static int dahdi_ring_phone(struct dahdi_pvt *p);
2465 static int my_ring(void *pvt)
2467 struct dahdi_pvt *p = pvt;
2469 return dahdi_ring_phone(p);
2472 static int my_flash(void *pvt)
2474 struct dahdi_pvt *p = pvt;
2475 int func = DAHDI_FLASH;
2476 return ioctl(p->subs[SUB_REAL].dfd, DAHDI_HOOK, &func);
2479 static inline int dahdi_set_hook(int fd, int hs);
2481 static int my_off_hook(void *pvt)
2483 struct dahdi_pvt *p = pvt;
2484 return dahdi_set_hook(p->subs[SUB_REAL].dfd, DAHDI_OFFHOOK);
2487 static int my_start(void *pvt)
2489 struct dahdi_pvt *p = pvt;
2490 int x = DAHDI_START;
2492 return ioctl(p->subs[SUB_REAL].dfd, DAHDI_HOOK, &x);
2495 static int my_dial_digits(void *pvt, enum analog_sub sub, struct analog_dialoperation *dop)
2497 int index = analogsub_to_dahdisub(sub);
2499 struct dahdi_pvt *p = pvt;
2500 struct dahdi_dialoperation ddop;
2502 if (dop->op != ANALOG_DIAL_OP_REPLACE) {
2503 ast_log(LOG_ERROR, "Fix the dial_digits callback!\n");
2507 if (sub != ANALOG_SUB_REAL)
2508 printf("Trying to dial digits on sub %d\n", sub);
2510 ddop.op = DAHDI_DIAL_OP_REPLACE;
2511 strncpy(ddop.dialstr, dop->dialstr, sizeof(ddop.dialstr));
2513 printf("Dialing %s on %d\n", ddop.dialstr, p->channel);
2515 res = ioctl(p->subs[index].dfd, DAHDI_DIAL, &ddop);
2518 ast_log(LOG_DEBUG, "DAHDI_DIAL ioctl failed on %s: %s\n", p->owner->name, strerror(errno));
2523 static void dahdi_train_ec(struct dahdi_pvt *p);
2525 static int my_train_echocanceller(void *pvt)
2527 struct dahdi_pvt *p = pvt;
2534 static int my_is_dialing(void *pvt, enum analog_sub sub)
2536 struct dahdi_pvt *p = pvt;
2540 index = analogsub_to_dahdisub(sub);
2542 if (ioctl(p->subs[index].dfd, DAHDI_DIALING, &x)) {
2543 ast_log(LOG_DEBUG, "DAHDI_DIALING ioctl failed!\n");
2550 static int my_on_hook(void *pvt)
2552 struct dahdi_pvt *p = pvt;
2553 return dahdi_set_hook(p->subs[ANALOG_SUB_REAL].dfd, DAHDI_ONHOOK);
2556 #if defined(HAVE_PRI)
2557 static void my_pri_fixup_chans(void *old_chan, void *new_chan)
2559 struct dahdi_pvt *old = old_chan;
2560 struct dahdi_pvt *new = new_chan;
2561 struct sig_pri_chan *pchan = new->sig_pvt;
2562 struct sig_pri_pri *pri = pchan->pri;
2564 new->owner = old->owner;
2567 char newname[AST_CHANNEL_NAME];
2568 snprintf(newname, sizeof(newname), "DAHDI/%d:%d-%d", pri->trunkgroup, new->channel, 1);
2569 ast_change_name(new->owner, newname);
2571 new->owner->tech_pvt = new;
2572 new->owner->fds[0] = new->subs[SUB_REAL].dfd;
2573 new->subs[SUB_REAL].owner = old->subs[SUB_REAL].owner;
2574 old->subs[SUB_REAL].owner = NULL;
2576 /* Copy any DSP that may be present */
2577 new->dsp = old->dsp;
2578 new->dsp_features = old->dsp_features;
2580 old->dsp_features = 0;
2583 static int sig_pri_tone_to_dahditone(enum sig_pri_tone tone)
2586 case SIG_PRI_TONE_RINGTONE:
2587 return DAHDI_TONE_RINGTONE;
2588 case SIG_PRI_TONE_STUTTER:
2589 return DAHDI_TONE_STUTTER;
2590 case SIG_PRI_TONE_CONGESTION:
2591 return DAHDI_TONE_CONGESTION;
2592 case SIG_PRI_TONE_DIALTONE:
2593 return DAHDI_TONE_DIALTONE;
2594 case SIG_PRI_TONE_DIALRECALL:
2595 return DAHDI_TONE_DIALRECALL;
2596 case SIG_PRI_TONE_INFO:
2597 return DAHDI_TONE_INFO;
2598 case SIG_PRI_TONE_BUSY:
2599 return DAHDI_TONE_BUSY;
2605 static void my_handle_dchan_exception(struct sig_pri_pri *pri, int index)
2609 res = ioctl(pri->fds[index], DAHDI_GETEVENT, &x);
2611 ast_log(LOG_NOTICE, "PRI got event: %s (%d) on D-channel of span %d\n", event2str(x), x, pri->span);
2613 /* Keep track of alarm state */
2614 if (x == DAHDI_EVENT_ALARM) {
2615 pri_event_alarm(pri, index, 0);
2616 } else if (x == DAHDI_EVENT_NOALARM) {
2617 pri_event_noalarm(pri, index, 0);
2621 static int my_pri_play_tone(void *pvt, enum sig_pri_tone tone)
2623 struct dahdi_pvt *p = pvt;
2625 return tone_zone_play_tone(p->subs[SUB_REAL].dfd, sig_pri_tone_to_dahditone(tone));
2630 * \brief Set the caller id information.
2633 * \param pvt DAHDI private structure
2634 * \param caller Caller-id information to set.
2638 static void my_pri_set_callerid(void *pvt, const struct ast_party_caller *caller)
2640 struct dahdi_pvt *p = pvt;
2642 ast_copy_string(p->cid_num, S_OR(caller->id.number, ""), sizeof(p->cid_num));
2643 ast_copy_string(p->cid_name, S_OR(caller->id.name, ""), sizeof(p->cid_name));
2644 p->cid_ton = caller->id.number_type;
2645 p->callingpres = caller->id.number_presentation;
2646 ast_copy_string(p->cid_ani, S_OR(caller->ani, ""), sizeof(p->cid_ani));
2647 p->cid_ani2 = caller->ani2;
2652 * \brief Set the Dialed Number Identifier.
2655 * \param pvt DAHDI private structure
2656 * \param dnid Dialed Number Identifier string.
2660 static void my_pri_set_dnid(void *pvt, const char *dnid)
2662 struct dahdi_pvt *p = pvt;
2664 ast_copy_string(p->dnid, dnid, sizeof(p->dnid));
2669 * \brief Set the Redirecting Directory Number Information Service (RDNIS).
2672 * \param pvt DAHDI private structure
2673 * \param rdnis Redirecting Directory Number Information Service (RDNIS) string.
2677 static void my_pri_set_rdnis(void *pvt, const char *rdnis)
2679 struct dahdi_pvt *p = pvt;
2681 ast_copy_string(p->rdnis, rdnis, sizeof(p->rdnis));
2684 static struct sig_pri_callback dahdi_pri_callbacks =
2686 .handle_dchan_exception = my_handle_dchan_exception,
2687 .play_tone = my_pri_play_tone,
2688 .set_echocanceller = my_set_echocanceller,
2689 .dsp_reset_and_flush_digits = my_dsp_reset_and_flush_digits,
2690 .lock_private = my_lock_private,
2691 .unlock_private = my_unlock_private,
2692 .new_ast_channel = my_new_pri_ast_channel,
2693 .fixup_chans = my_pri_fixup_chans,
2694 .set_dialing = my_set_dialing,
2695 .set_callerid = my_pri_set_callerid,
2696 .set_dnid = my_pri_set_dnid,
2697 .set_rdnis = my_pri_set_rdnis,
2699 #endif /* defined(HAVE_PRI) */
2702 * \brief Send MWI state change
2704 * \arg mailbox_full This is the mailbox associated with the FXO line that the
2705 * MWI state has changed on.
2706 * \arg thereornot This argument should simply be set to 1 or 0, to indicate
2707 * whether there are messages waiting or not.
2711 * This function does two things:
2713 * 1) It generates an internal Asterisk event notifying any other module that
2714 * cares about MWI that the state of a mailbox has changed.
2716 * 2) It runs the script specified by the mwimonitornotify option to allow
2717 * some custom handling of the state change.
2719 static void notify_message(char *mailbox_full, int thereornot)
2721 char s[sizeof(mwimonitornotify) + 80];
2722 struct ast_event *event;
2723 char *mailbox, *context;
2725 /* Strip off @default */
2726 context = mailbox = ast_strdupa(mailbox_full);
2727 strsep(&context, "@");
2728 if (ast_strlen_zero(context))
2729 context = "default";
2731 if (!(event = ast_event_new(AST_EVENT_MWI,
2732 AST_EVENT_IE_MAILBOX, AST_EVENT_IE_PLTYPE_STR, mailbox,
2733 AST_EVENT_IE_CONTEXT, AST_EVENT_IE_PLTYPE_STR, context,
2734 AST_EVENT_IE_NEWMSGS, AST_EVENT_IE_PLTYPE_UINT, thereornot,
2735 AST_EVENT_IE_OLDMSGS, AST_EVENT_IE_PLTYPE_UINT, thereornot,
2736 AST_EVENT_IE_END))) {
2740 ast_event_queue_and_cache(event);
2742 if (!ast_strlen_zero(mailbox) && !ast_strlen_zero(mwimonitornotify)) {
2743 snprintf(s, sizeof(s), "%s %s %d", mwimonitornotify, mailbox, thereornot);
2748 static void my_handle_notify_message(struct ast_channel *chan, void *pvt, int cid_flags, int neon_mwievent)
2750 struct dahdi_pvt *p = pvt;
2752 if (neon_mwievent > -1 && !p->mwimonitor_neon)
2755 if (neon_mwievent == ANALOG_EVENT_NEONMWI_ACTIVE || cid_flags & CID_MSGWAITING) {
2756 ast_log(LOG_NOTICE, "MWI: Channel %d message waiting, mailbox %s\n", p->channel, p->mailbox);
2757 notify_message(p->mailbox, 1);
2758 } else if (neon_mwievent == ANALOG_EVENT_NEONMWI_INACTIVE || cid_flags & CID_NOMSGWAITING) {
2759 ast_log(LOG_NOTICE, "MWI: Channel %d no message waiting, mailbox %s\n", p->channel, p->mailbox);
2760 notify_message(p->mailbox, 0);
2762 /* If the CID had Message waiting payload, assume that this for MWI only and hangup the call */
2763 /* If generated using Ring Pulse Alert, then ring has been answered as a call and needs to be hungup */
2764 if (neon_mwievent == -1 && p->mwimonitor_rpas) {
2772 static struct analog_callback dahdi_analog_callbacks =
2774 .play_tone = my_play_tone,
2775 .get_event = my_get_event,
2776 .wait_event = my_wait_event,
2777 .is_off_hook = my_is_off_hook,
2778 .set_echocanceller = my_set_echocanceller,
2781 .off_hook = my_off_hook,
2782 .dial_digits = my_dial_digits,
2783 .train_echocanceller = my_train_echocanceller,
2784 .on_hook = my_on_hook,
2785 .is_dialing = my_is_dialing,
2786 .allocate_sub = my_allocate_sub,
2787 .unallocate_sub = my_unallocate_sub,
2788 .swap_subs = my_swap_subchannels,
2789 .has_voicemail = my_has_voicemail,
2790 .check_for_conference = my_check_for_conference,
2791 .conf_add = my_conf_add,
2792 .conf_del = my_conf_del,
2793 .complete_conference_update = my_complete_conference_update,
2795 .all_subchannels_hungup = my_all_subchannels_hungup,
2796 .lock_private = my_lock_private,
2797 .unlock_private = my_unlock_private,
2798 .handle_dtmfup = my_handle_dtmfup,
2800 .new_ast_channel = my_new_analog_ast_channel,
2801 .dsp_set_digitmode = my_dsp_set_digitmode,
2802 .dsp_reset_and_flush_digits = my_dsp_reset_and_flush_digits,
2803 .send_callerid = my_send_callerid,
2804 .callwait = my_callwait,
2805 .stop_callwait = my_stop_callwait,
2806 .get_callerid = my_get_callerid,
2807 .start_cid_detect = my_start_cid_detect,
2808 .stop_cid_detect = my_stop_cid_detect,
2809 .handle_notify_message = my_handle_notify_message,
2810 .increase_ss_count = my_increase_ss_count,
2811 .decrease_ss_count = my_decrease_ss_count,
2812 .distinctive_ring = my_distinctive_ring,
2813 .set_linear_mode = my_set_linear_mode,
2814 .get_and_handle_alarms = my_get_and_handle_alarms,
2815 .get_sigpvt_bridged_channel = my_get_sigpvt_bridged_channel,
2816 .get_sub_fd = my_get_sub_fd,
2817 .set_cadence = my_set_cadence,
2818 .set_dialing = my_set_dialing,
2819 .set_ringtimeout = my_set_ringtimeout,
2820 .set_waitingfordt = my_set_waitingfordt,
2821 .check_waitingfordt = my_check_waitingfordt,
2822 .set_confirmanswer = my_set_confirmanswer,
2823 .check_confirmanswer = my_check_confirmanswer,
2826 static struct dahdi_pvt *round_robin[32];
2828 #if defined(HAVE_SS7)
2829 static inline void ss7_rel(struct dahdi_ss7 *ss7)
2831 ast_mutex_unlock(&ss7->lock);
2833 #endif /* defined(HAVE_SS7) */
2835 #if defined(HAVE_SS7)
2836 static inline int ss7_grab(struct dahdi_pvt *pvt, struct dahdi_ss7 *pri)
2839 /* Grab the lock first */
2841 res = ast_mutex_trylock(&pri->lock);
2843 DEADLOCK_AVOIDANCE(&pvt->lock);
2846 /* Then break the poll */
2847 if (pri->master != AST_PTHREADT_NULL)
2848 pthread_kill(pri->master, SIGURG);
2851 #endif /* defined(HAVE_SS7) */
2853 static int dahdi_get_index(struct ast_channel *ast, struct dahdi_pvt *p, int nullok)
2856 if (p->subs[SUB_REAL].owner == ast)
2858 else if (p->subs[SUB_CALLWAIT].owner == ast)
2860 else if (p->subs[SUB_THREEWAY].owner == ast)
2865 ast_log(LOG_WARNING, "Unable to get index, and nullok is not asserted\n");
2870 static void wakeup_sub(struct dahdi_pvt *p, int a)
2873 if (p->subs[a].owner) {
2874 if (ast_channel_trylock(p->subs[a].owner)) {
2875 DEADLOCK_AVOIDANCE(&p->lock);
2877 ast_queue_frame(p->subs[a].owner, &ast_null_frame);
2878 ast_channel_unlock(p->subs[a].owner);
2886 static void dahdi_queue_frame(struct dahdi_pvt *p, struct ast_frame *f, void *data)
2889 struct dahdi_ss7 *ss7 = (struct dahdi_ss7*) data;
2894 ast_mutex_unlock(&ss7->lock);
2903 if (ast_channel_trylock(p->owner)) {
2904 DEADLOCK_AVOIDANCE(&p->lock);
2906 ast_queue_frame(p->owner, f);
2907 ast_channel_unlock(p->owner);
2913 #if defined(HAVE_SS7)
2917 ast_mutex_lock(&ss7->lock);
2928 static int dahdi_r2_answer(struct dahdi_pvt *p)
2931 /* openr2 1.1.0 and older does not even define OR2_LIB_INTERFACE
2932 * and does not has support for openr2_chan_answer_call_with_mode
2934 #if defined(OR2_LIB_INTERFACE) && OR2_LIB_INTERFACE > 1
2935 const char *double_answer = pbx_builtin_getvar_helper(p->owner, "MFCR2_DOUBLE_ANSWER");
2936 int wants_double_answer = ast_true(double_answer) ? 1 : 0;
2937 if (!double_answer) {
2938 /* this still can result in double answer if the channel context
2939 * was configured that way */
2940 res = openr2_chan_answer_call(p->r2chan);
2941 } else if (wants_double_answer) {
2942 res = openr2_chan_answer_call_with_mode(p->r2chan, OR2_ANSWER_DOUBLE);
2944 res = openr2_chan_answer_call_with_mode(p->r2chan, OR2_ANSWER_SIMPLE);
2947 res = openr2_chan_answer_call(p->r2chan);
2954 /* should be called with the ast_channel locked */
2955 static openr2_calling_party_category_t dahdi_r2_get_channel_category(struct ast_channel *c)
2957 openr2_calling_party_category_t cat;
2958 const char *catstr = pbx_builtin_getvar_helper(c, "MFCR2_CATEGORY");
2959 struct dahdi_pvt *p = c->tech_pvt;
2960 if (ast_strlen_zero(catstr)) {
2961 ast_debug(1, "No MFC/R2 category specified for chan %s, using default %s\n",
2962 c->name, openr2_proto_get_category_string(p->mfcr2_category));
2963 return p->mfcr2_category;
2965 if ((cat = openr2_proto_get_category(catstr)) == OR2_CALLING_PARTY_CATEGORY_UNKNOWN) {
2966 ast_log(LOG_WARNING, "Invalid category specified '%s' for chan %s, using default %s\n",
2967 catstr, c->name, openr2_proto_get_category_string(p->mfcr2_category));
2968 return p->mfcr2_category;
2970 ast_debug(1, "Using category %s\n", catstr);
2974 static void dahdi_r2_on_call_init(openr2_chan_t *r2chan)
2976 struct dahdi_pvt *p = openr2_chan_get_client_data(r2chan);
2977 ast_mutex_lock(&p->lock);
2979 ast_mutex_unlock(&p->lock);
2980 /* TODO: This can happen when some other thread just finished dahdi_request requesting this very same
2981 interface but has not yet seized the line (dahdi_call), and the far end wins and seize the line,
2982 can we avoid this somehow?, at this point when dahdi_call send the seize, it is likely that since
2983 the other end will see our seize as a forced release and drop the call, we will see an invalid
2984 pattern that will be seen and treated as protocol error. */
2985 ast_log(LOG_ERROR, "Collision of calls on chan %d detected!.\n", openr2_chan_get_number(r2chan));
2989 /* better safe than sorry ... */
2990 p->cid_name[0] = '\0';
2991 p->cid_num[0] = '\0';
2994 p->mfcr2_ani_index = '\0';
2995 p->mfcr2_dnis_index = '\0';
2996 p->mfcr2_dnis_matched = 0;
2997 p->mfcr2_answer_pending = 0;
2998 p->mfcr2_call_accepted = 0;
2999 ast_mutex_unlock(&p->lock);
3000 ast_log(LOG_NOTICE, "New MFC/R2 call detected on chan %d.\n", openr2_chan_get_number(r2chan));
3003 static void dahdi_r2_on_hardware_alarm(openr2_chan_t *r2chan, int alarm)
3006 struct dahdi_pvt *p = openr2_chan_get_client_data(r2chan);
3007 ast_mutex_lock(&p->lock);
3008 p->inalarm = alarm ? 1 : 0;
3010 res = get_alarms(p);
3011 handle_alarms(p, res);
3013 ast_log(LOG_NOTICE, "Alarm cleared on channel %d\n", p->channel);
3014 manager_event(EVENT_FLAG_SYSTEM, "AlarmClear", "Channel: %d\r\n", p->channel);
3016 ast_mutex_unlock(&p->lock);
3019 static void dahdi_r2_on_os_error(openr2_chan_t *r2chan, int errorcode)
3021 ast_log(LOG_ERROR, "OS error on chan %d: %s\n", openr2_chan_get_number(r2chan), strerror(errorcode));
3024 static void dahdi_r2_on_protocol_error(openr2_chan_t *r2chan, openr2_protocol_error_t reason)
3026 struct dahdi_pvt *p = openr2_chan_get_client_data(r2chan);
3027 ast_log(LOG_ERROR, "MFC/R2 protocol error on chan %d: %s\n", openr2_chan_get_number(r2chan), openr2_proto_get_error(reason));
3029 p->owner->hangupcause = AST_CAUSE_PROTOCOL_ERROR;
3030 p->owner->_softhangup |= AST_SOFTHANGUP_DEV;
3032 ast_mutex_lock(&p->lock);
3034 ast_mutex_unlock(&p->lock);
3037 static void dahdi_r2_update_monitor_count(struct dahdi_mfcr2 *mfcr2, int increment)
3039 ast_mutex_lock(&mfcr2->monitored_count_lock);
3041 mfcr2->monitored_count++;
3042 if (mfcr2->monitored_count == 1) {
3043 ast_log(LOG_DEBUG, "At least one device needs monitoring, let's wake up the monitor thread.\n");
3044 ast_cond_signal(&mfcr2->do_monitor);
3047 mfcr2->monitored_count--;
3048 if (mfcr2->monitored_count < 0) {
3049 ast_log(LOG_ERROR, "we have a bug here!.\n");
3052 ast_mutex_unlock(&mfcr2->monitored_count_lock);
3055 static void dahdi_r2_on_call_offered(openr2_chan_t *r2chan, const char *ani, const char *dnis, openr2_calling_party_category_t category)
3057 struct dahdi_pvt *p;
3058 struct ast_channel *c;
3059 ast_log(LOG_NOTICE, "MFC/R2 call offered on chan %d. ANI = %s, DNIS = %s, Category = %s\n",
3060 openr2_chan_get_number(r2chan), ani ? ani : "(restricted)", dnis,
3061 openr2_proto_get_category_string(category));
3062 p = openr2_chan_get_client_data(r2chan);
3063 /* if collect calls are not allowed and this is a collect call, reject it! */
3064 if (!p->mfcr2_allow_collect_calls && category == OR2_CALLING_PARTY_CATEGORY_COLLECT_CALL) {
3065 ast_log(LOG_NOTICE, "Rejecting MFC/R2 collect call\n");
3066 openr2_chan_disconnect_call(r2chan, OR2_CAUSE_COLLECT_CALL_REJECTED);
3069 ast_mutex_lock(&p->lock);
3070 p->mfcr2_recvd_category = category;
3071 /* if we're not supposed to use CID, clear whatever we have */
3072 if (!p->use_callerid) {
3073 ast_log(LOG_DEBUG, "No CID allowed in configuration, CID is being cleared!\n");
3077 /* if we're supposed to answer immediately, clear DNIS and set 's' exten */
3078 if (p->immediate || !openr2_context_get_max_dnis(openr2_chan_get_context(r2chan))) {
3079 ast_log(LOG_DEBUG, "Setting exten => s because of immediate or 0 DNIS configured\n");
3083 ast_mutex_unlock(&p->lock);
3084 if (!ast_exists_extension(NULL, p->context, p->exten, 1, p->cid_num)) {
3085 ast_log(LOG_NOTICE, "MFC/R2 call on channel %d requested non-existent extension '%s' in context '%s'. Rejecting call.\n",
3086 p->channel, p->exten, p->context);
3087 openr2_chan_disconnect_call(r2chan, OR2_CAUSE_UNALLOCATED_NUMBER);
3090 if (!p->mfcr2_accept_on_offer) {
3091 /* The user wants us to start the PBX thread right away without accepting the call first */
3092 c = dahdi_new(p, AST_STATE_RING, 1, SUB_REAL, DAHDI_LAW_ALAW, 0, NULL);
3094 dahdi_r2_update_monitor_count(p->mfcr2, 0);
3095 /* Done here, don't disable reading now since we still need to generate MF tones to accept
3096 the call or reject it and detect the tone off condition of the other end, all of this
3097 will be done in the PBX thread now */
3100 ast_log(LOG_WARNING, "Unable to create PBX channel in DAHDI channel %d\n", p->channel);
3101 openr2_chan_disconnect_call(r2chan, OR2_CAUSE_OUT_OF_ORDER);
3102 } else if (p->mfcr2_charge_calls) {
3103 ast_log(LOG_DEBUG, "Accepting MFC/R2 call with charge on chan %d\n", p->channel);
3104 openr2_chan_accept_call(r2chan, OR2_CALL_WITH_CHARGE);
3106 ast_log(LOG_DEBUG, "Accepting MFC/R2 call with no charge on chan %d\n", p->channel);
3107 openr2_chan_accept_call(r2chan, OR2_CALL_NO_CHARGE);
3111 static void dahdi_r2_on_call_end(openr2_chan_t *r2chan)
3113 struct dahdi_pvt *p = openr2_chan_get_client_data(r2chan);
3114 ast_log(LOG_NOTICE, "MFC/R2 call end on chan %d\n", p->channel);
3115 ast_mutex_lock(&p->lock);
3117 ast_mutex_unlock(&p->lock);
3120 static void dahdi_enable_ec(struct dahdi_pvt *p);
3121 static void dahdi_r2_on_call_accepted(openr2_chan_t *r2chan, openr2_call_mode_t mode)
3123 struct dahdi_pvt *p = NULL;
3124 struct ast_channel *c = NULL;
3125 ast_log(LOG_NOTICE, "MFC/R2 call has been accepted on chan %d\n", openr2_chan_get_number(r2chan));
3126 p = openr2_chan_get_client_data(r2chan);
3128 p->mfcr2_call_accepted = 1;
3129 /* if it's an incoming call ... */
3130 if (OR2_DIR_BACKWARD == openr2_chan_get_direction(r2chan)) {
3131 /* If accept on offer is not set, it means at this point the PBX thread is already
3132 launched (was launched in the 'on call offered' handler) and therefore this callback
3133 is being executed already in the PBX thread rather than the monitor thread, don't launch
3134 any other thread, just disable the openr2 reading and answer the call if needed */
3135 if (!p->mfcr2_accept_on_offer) {
3136 openr2_chan_disable_read(r2chan);
3137 if (p->mfcr2_answer_pending) {
3138 ast_log(LOG_DEBUG, "Answering MFC/R2 call after accepting it on chan %d\n", openr2_chan_get_number(r2chan));
3143 c = dahdi_new(p, AST_STATE_RING, 1, SUB_REAL, DAHDI_LAW_ALAW, 0, NULL);
3145 dahdi_r2_update_monitor_count(p->mfcr2, 0);
3146 /* chan_dahdi will take care of reading from now on in the PBX thread, tell the
3147 library to forget about it */
3148 openr2_chan_disable_read(r2chan);
3151 ast_log(LOG_WARNING, "Unable to create PBX channel in DAHDI channel %d\n", p->channel);
3152 /* failed to create the channel, bail out and report it as an out of order line */
3153 openr2_chan_disconnect_call(r2chan, OR2_CAUSE_OUT_OF_ORDER);
3156 /* this is an outgoing call, no need to launch the PBX thread, most likely we're in one already */
3157 ast_log(LOG_NOTICE, "Call accepted on forward channel %d\n", p->channel);
3158 p->subs[SUB_REAL].needringing = 1;
3160 /* chan_dahdi will take care of reading from now on in the PBX thread, tell the
3161 library to forget about it */
3162 openr2_chan_disable_read(r2chan);
3165 static void dahdi_r2_on_call_answered(openr2_chan_t *r2chan)
3167 struct dahdi_pvt *p = openr2_chan_get_client_data(r2chan);
3168 ast_log(LOG_DEBUG, "MFC/R2 call has been answered on chan %d\n", openr2_chan_get_number(r2chan));
3169 p->subs[SUB_REAL].needanswer = 1;
3172 static void dahdi_r2_on_call_read(openr2_chan_t *r2chan, const unsigned char *buf, int buflen)
3174 /*ast_log(LOG_DEBUG, "Read data from dahdi channel %d\n", openr2_chan_get_number(r2chan));*/
3177 static int dahdi_r2_cause_to_ast_cause(openr2_call_disconnect_cause_t cause)
3180 case OR2_CAUSE_BUSY_NUMBER:
3181 return AST_CAUSE_BUSY;
3182 case OR2_CAUSE_NETWORK_CONGESTION:
3183 return AST_CAUSE_CONGESTION;
3184 case OR2_CAUSE_OUT_OF_ORDER:
3185 return AST_CAUSE_DESTINATION_OUT_OF_ORDER;
3186 case OR2_CAUSE_UNALLOCATED_NUMBER:
3187 return AST_CAUSE_UNREGISTERED;
3188 case OR2_CAUSE_NO_ANSWER:
3189 return AST_CAUSE_NO_ANSWER;
3190 case OR2_CAUSE_NORMAL_CLEARING:
3191 return AST_CAUSE_NORMAL_CLEARING;
3192 case OR2_CAUSE_UNSPECIFIED:
3194 return AST_CAUSE_NOTDEFINED;
3198 static void dahdi_r2_on_call_disconnect(openr2_chan_t *r2chan, openr2_call_disconnect_cause_t cause)
3200 struct dahdi_pvt *p = openr2_chan_get_client_data(r2chan);
3201 ast_verb(3, "MFC/R2 call disconnected on chan %d\n", openr2_chan_get_number(r2chan));
3202 ast_mutex_lock(&p->lock);
3204 ast_mutex_unlock(&p->lock);
3205 /* no owner, therefore we can't use dahdi_hangup to disconnect, do it right now */
3206 openr2_chan_disconnect_call(r2chan, OR2_CAUSE_NORMAL_CLEARING);
3209 /* when we have an owner we don't call openr2_chan_disconnect_call here, that will
3210 be done in dahdi_hangup */
3211 if (p->owner->_state == AST_STATE_UP) {
3212 p->owner->_softhangup |= AST_SOFTHANGUP_DEV;
3213 ast_mutex_unlock(&p->lock);
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