1 /*****************************************************************************\
3 ** Linux Call Router **
5 **---------------------------------------------------------------------------**
6 ** Copyright: Andreas Eversberg **
8 ** Asterisk socket client **
10 \*****************************************************************************/
16 To connect, open an LCR socket and send a MESSAGE_HELLO to socket with
17 the application name. This name is unique an can be used for routing calls.
18 Now the channel driver is linked to LCR and can receive and make calls.
21 Call is initiated by LCR:
23 If a call is received from LCR, a MESSAGE_NEWREF is received first.
24 A new chan_call instance is created. The call reference (ref) is given by
25 MESSAGE_NEWREF. The state is CHAN_LCR_STATE_IN_PREPARE.
26 After receiving MESSAGE_SETUP from LCR, the ast_channel instance is created
27 using ast_channel_alloc(1). The setup information is given to asterisk.
28 The new Asterisk instance pointer (ast) is stored to chan_call structure.
29 The state changes to CHAN_LCR_STATE_IN_SETUP.
32 Call is initiated by Asterisk:
34 If a call is requested from Asterisk, a new chan_call instance is created.
35 The new Asterisk instance pointer (ast) is stored to chan_call structure.
36 The current call ref is set to 0, the state is CHAN_LCR_STATE_OUT_PREPARE.
37 If the call is received (lcr_call) A MESSASGE_NEWREF is sent to LCR requesting
38 a new call reference (ref).
39 Further dialing information is queued.
40 After the new callref is received by special MESSAGE_NEWREF reply, new ref
41 is stored in the chan_call structure.
42 The setup information is sent to LCR using MESSAGE_SETUP.
43 The state changes to CHAN_LCR_STATE_OUT_SETUP.
48 During call process, messages are received and sent.
49 The state changes accordingly.
50 Any message is allowed to be sent to LCR at any time except MESSAGE_RELEASE.
51 If a MESSAGE_OVERLAP is received, further dialing is required.
52 Queued dialing information, if any, is sent to LCR using MESSAGE_DIALING.
53 In this case, the state changes to CHAN_LCR_STATE_OUT_DIALING.
56 Call is released by LCR:
58 A MESSAGE_RELEASE is received with the call reference (ref) to be released.
59 The current ref is set to 0, to indicate released reference.
60 The state changes to CHAN_LCR_STATE_RELEASE.
61 ast_queue_hangup() is called, if asterisk instance (ast) exists, if not,
62 the chan_call instance is destroyed.
63 After lcr_hangup() is called-back by Asterisk, the chan_call instance
64 is destroyed, because the current ref is set to 0 and the state equals
65 CHAN_LCR_STATE_RELEASE.
66 If the ref is 0 and the state is not CHAN_LCR_STATE_RELEASE, see the proceedure
67 "Call is released by Asterisk".
70 Call is released by Asterisk:
72 lcr_hangup() is called-back by Asterisk. If the call reference (ref) is set,
73 a MESSAGE_RELEASE is sent to LCR and the chan_call instance is destroyed.
74 If the ref is 0 and the state is not CHAN_LCR_STATE_RELEASE, the new state is
75 set to CHAN_LCR_STATE_RELEASE.
76 Later, if the MESSAGE_NEWREF reply is received, a MESSAGE_RELEASE is sent to
77 LCR and the chan_call instance is destroyed.
78 If the ref is 0 and the state is CHAN_LCR_STATE_RELEASE, see the proceedure
79 "Call is released by LCR".
84 The deadlocking problem:
86 - chan_lcr locks chan_lock and waits inside ast_queue_xxxx() for ast_channel
88 - ast_channel thread locks ast_channel and calls a tech function and waits
89 there for chan_lock to be unlocked.
93 Never call ast_queue_xxxx() if ast_channel is not locked and don't wait until
94 ast_channel can be locked. All messages to asterisk are queued inside call
95 instance and will be handled using a try-lock to get ast_channel lock.
96 If it succeeds to lock ast_channel, the ast_queue_xxxx can safely called even
97 if the lock is incremented and decremented there.
99 Exception: Calling ast_queue_frame inside ast->tech->read is safe, because
100 it is called from ast_channel process which has already locked ast_channel.
109 #include <sys/types.h>
111 //#include <signal.h>
114 #include <sys/ioctl.h>
115 #include <sys/socket.h>
118 #include <semaphore.h>
120 #include <asterisk/module.h>
121 #include <asterisk/channel.h>
122 #include <asterisk/config.h>
123 #include <asterisk/logger.h>
124 #include <asterisk/pbx.h>
125 #include <asterisk/options.h>
126 #include <asterisk/io.h>
127 #include <asterisk/frame.h>
128 #include <asterisk/translate.h>
129 #include <asterisk/cli.h>
130 #include <asterisk/musiconhold.h>
131 #include <asterisk/dsp.h>
132 #include <asterisk/translate.h>
133 #include <asterisk/file.h>
134 #include <asterisk/callerid.h>
135 #include <asterisk/indications.h>
136 #include <asterisk/app.h>
137 #include <asterisk/features.h>
138 #include <asterisk/sched.h>
140 #include "extension.h"
142 #include "callerid.h"
143 #include "lcrsocket.h"
145 #include "bchannel.h"
147 #include "chan_lcr.h"
149 CHAN_LCR_STATE // state description structure
150 MESSAGES // message text
152 unsigned char flip_bits[256];
157 char lcr_type[]="lcr";
160 ast_mutex_t chan_lock; /* global lock */
161 ast_mutex_t log_lock; /* logging log */
164 int glob_channel = 0;
169 struct admin_list *next;
170 struct admin_message msg;
171 } *admin_first = NULL;
173 static struct ast_channel_tech lcr_tech;
178 void chan_lcr_log(int type, const char *file, int line, const char *function, struct chan_call *call, struct ast_channel *ast, const char *fmt, ...)
181 char call_text[128] = "NULL";
182 char ast_text[128] = "NULL";
185 ast_mutex_lock(&log_lock);
188 vsnprintf(buffer,sizeof(buffer)-1,fmt,args);
189 buffer[sizeof(buffer)-1]=0;
193 sprintf(call_text, "%d", call->ref);
195 strncpy(ast_text, ast->name, sizeof(ast_text)-1);
196 ast_text[sizeof(ast_text)-1] = '\0';
198 ast_log(type, file, line, function, "[call=%s ast=%s] %s", call_text, ast_text, buffer);
200 ast_mutex_unlock(&log_lock);
204 * channel and call instances
206 struct chan_call *call_first;
210 * special case: 0: find new ref, that has not been assigned a ref yet
213 struct chan_call *find_call_ref(unsigned int ref)
215 struct chan_call *call = call_first;
216 int assigned = (ref > 0);
220 if (call->ref == ref && call->ref_was_assigned == assigned)
227 void free_call(struct chan_call *call)
229 struct chan_call **temp = &call_first;
235 *temp = (*temp)->next;
236 if (call->pipe[0] > -1)
237 close(call->pipe[0]);
238 if (call->pipe[1] > -1)
239 close(call->pipe[1]);
242 if (call->bchannel->call != call)
243 CERROR(call, NULL, "Linked bchannel structure has no link to us.\n");
244 call->bchannel->call = NULL;
246 if (call->bridge_call)
248 if (call->bridge_call->bridge_call != call)
249 CERROR(call, NULL, "Linked call structure has no link to us.\n");
250 call->bridge_call->bridge_call = NULL;
252 CDEBUG(call, NULL, "Call instance freed.\n");
256 temp = &((*temp)->next);
258 CERROR(call, NULL, "Call instance not found in list.\n");
261 struct chan_call *alloc_call(void)
263 struct chan_call **callp = &call_first;
266 callp = &((*callp)->next);
268 *callp = (struct chan_call *)calloc(1, sizeof(struct chan_call));
270 memset(*callp, 0, sizeof(struct chan_call));
271 if (pipe((*callp)->pipe) < 0) {
272 CERROR(*callp, NULL, "Failed to create pipe.\n");
276 fcntl((*callp)->pipe[0], F_SETFL, O_NONBLOCK);
277 CDEBUG(*callp, NULL, "Call instance allocated.\n");
281 unsigned short new_bridge_id(void)
283 struct chan_call *call;
284 unsigned short id = 1;
286 /* search for lowest bridge id that is not in use and not 0 */
292 if (call->bridge_id == id)
300 CDEBUG(NULL, NULL, "New bridge ID %d.\n", id);
305 * enque message to LCR
307 int send_message(int message_type, unsigned int ref, union parameter *param)
309 struct admin_list *admin, **adminp;
312 CDEBUG(NULL, NULL, "Ignoring message %d, because socket is closed.\n", message_type);
315 CDEBUG(NULL, NULL, "Sending %s to socket.\n", messages_txt[message_type]);
317 adminp = &admin_first;
319 adminp = &((*adminp)->next);
320 admin = (struct admin_list *)calloc(1, sizeof(struct admin_list));
322 CERROR(NULL, NULL, "No memory for message to LCR.\n");
327 admin->msg.message = ADMIN_MESSAGE;
328 admin->msg.u.msg.type = message_type;
329 admin->msg.u.msg.ref = ref;
330 memcpy(&admin->msg.u.msg.param, param, sizeof(union parameter));
336 * apply options (in locked state)
338 void apply_opt(struct chan_call *call, char *data)
340 union parameter newparam;
341 char string[1024], *p = string, *opt, *key;
342 int gain, i, newmode = 0;
347 strncpy(string, data, sizeof(string)-1);
348 string[sizeof(string)-1] = '\0';
351 while((opt = strsep(&p, ":")))
355 if (opt[1] == '\0') {
356 CERROR(call, call->ast, "Option 'd' (display) expects parameter.\n", opt);
359 CDEBUG(call, call->ast, "Option 'd' (display) with text '%s'.\n", opt+1);
360 if (call->state == CHAN_LCR_STATE_OUT_PREPARE)
361 strncpy(call->display, opt+1, sizeof(call->display)-1);
363 memset(&newparam, 0, sizeof(union parameter));
364 strncpy(newparam.notifyinfo.display, opt+1, sizeof(newparam.notifyinfo.display)-1);
365 send_message(MESSAGE_NOTIFY, call->ref, &newparam);
369 if (opt[1] != '\0') {
370 CERROR(call, call->ast, "Option 'n' (no DTMF) expects no parameter.\n", opt);
373 CDEBUG(call, call->ast, "Option 'n' (no DTMF).\n");
377 if (opt[1] == '\0') {
378 CERROR(call, call->ast, "Option 'c' (encrypt) expects key parameter.\n", opt);
382 /* check for 0xXXXX... type of key */
383 if (!!strncmp((char *)key, "0x", 2)) {
384 CERROR(call, call->ast, "Option 'c' (encrypt) expects key parameter starting with '0x'.\n", opt);
388 if (strlen(key) > 56*2 || (strlen(key) % 1)) {
389 CERROR(call, call->ast, "Option 'c' (encrypt) expects key parameter with max 56 bytes ('0x' + 112 characters)\n", opt);
395 if (*key>='0' && *key<='9')
396 call->bf_key[i] = (*key-'0') << 8;
397 else if (*key>='a' && *key<='f')
398 call->bf_key[i] = (*key-'a'+10) << 8;
399 else if (*key>='A' && *key<='F')
400 call->bf_key[i] = (*key-'A'+10) << 8;
404 if (*key>='0' && *key<='9')
405 call->bf_key[i] += (*key - '0');
406 else if (*key>='a' && *key<='f')
407 call->bf_key[i] += (*key - 'a' + 10);
408 else if (*key>='A' && *key<='F')
409 call->bf_key[i] += (*key - 'A' + 10);
416 CERROR(call, call->ast, "Option 'c' (encrypt) expects key parameter with hex values 0-9,a-f.\n");
420 CDEBUG(call, call->ast, "Option 'c' (encrypt) blowfish key '%s' (len=%d).\n", opt+1, i);
422 bchannel_blowfish(call->bchannel, call->bf_key, call->bf_len);
425 if (opt[1] != '\0') {
426 CERROR(call, call->ast, "Option 'h' (HDLC) expects no parameter.\n", opt);
429 CDEBUG(call, call->ast, "Option 'h' (HDLC).\n");
436 if (opt[1] != '\0') {
437 CERROR(call, call->ast, "Option 't' (no_dsp) expects no parameter.\n", opt);
440 CDEBUG(call, call->ast, "Option 't' (no dsp).\n");
447 if (opt[1] == '\0') {
448 CERROR(call, call->ast, "Option 'e' (echo cancel) expects parameter.\n", opt);
451 CDEBUG(call, call->ast, "Option 'e' (echo cancel) with config '%s'.\n", opt+1);
452 strncpy(call->pipeline, opt+1, sizeof(call->pipeline)-1);
454 bchannel_pipeline(call->bchannel, call->pipeline);
457 if (opt[1] != '\0') {
458 CERROR(call, call->ast, "Option 'r' (re-buffer 160 bytes) expects no parameter.\n", opt);
461 CDEBUG(call, call->ast, "Option 'r' (re-buffer 160 bytes)");
466 if (opt[1] != '\0') {
467 CERROR(call, call->ast, "Option 's' (inband DTMF) expects no parameter.\n", opt);
470 CDEBUG(call, call->ast, "Option 's' (inband DTMF).\n");
471 call->inband_dtmf = 1;
476 if (opt[1] != 'r' && opt[1] != 't') {
477 CERROR(call, call->ast, "Option 'v' (volume) expects parameter.\n", opt);
481 if (gain < -8 || gain >8) {
482 CERROR(call, call->ast, "Option 'v' (volume) expects parameter in range of -8 through 8.\n");
485 CDEBUG(call, call->ast, "Option 'v' (volume) with gain 2^%d.\n", gain);
487 call->rx_gain = gain;
489 bchannel_gain(call->bchannel, call->rx_gain, 0);
491 call->tx_gain = gain;
493 bchannel_gain(call->bchannel, call->tx_gain, 1);
497 CERROR(call, call->ast, "Option '%s' unknown.\n", opt);
501 /* re-open, if bchannel is created */
502 if (call->bchannel && call->bchannel->b_sock > -1) {
503 bchannel_destroy(call->bchannel);
504 if (bchannel_create(call->bchannel, ((call->nodsp)?1:0) + ((call->hdlc)?2:0)))
505 bchannel_activate(call->bchannel, 1);
510 * send setup info to LCR
511 * this function is called, when asterisk call is received and ref is received
513 static void send_setup_to_lcr(struct chan_call *call)
515 union parameter newparam;
516 struct ast_channel *ast = call->ast;
518 if (!call->ast || !call->ref)
521 CDEBUG(call, call->ast, "Sending setup to LCR. (interface=%s dialstring=%s, cid=%s)\n", call->interface, call->dialstring, call->cid_num);
523 /* send setup message to LCR */
524 memset(&newparam, 0, sizeof(union parameter));
525 newparam.setup.dialinginfo.itype = INFO_ITYPE_ISDN;
526 newparam.setup.dialinginfo.ntype = INFO_NTYPE_UNKNOWN;
527 strncpy(newparam.setup.dialinginfo.id, call->dialstring, sizeof(newparam.setup.dialinginfo.id)-1);
528 strncpy(newparam.setup.dialinginfo.interfaces, call->interface, sizeof(newparam.setup.dialinginfo.interfaces)-1);
529 newparam.setup.callerinfo.itype = INFO_ITYPE_CHAN;
530 newparam.setup.callerinfo.ntype = INFO_NTYPE_UNKNOWN;
531 strncpy(newparam.setup.callerinfo.display, call->display, sizeof(newparam.setup.callerinfo.display)-1);
532 call->display[0] = '\0';
533 if (call->cid_num[0])
534 strncpy(newparam.setup.callerinfo.id, call->cid_num, sizeof(newparam.setup.callerinfo.id)-1);
535 if (call->cid_name[0])
536 strncpy(newparam.setup.callerinfo.name, call->cid_name, sizeof(newparam.setup.callerinfo.name)-1);
537 if (call->cid_rdnis[0])
539 strncpy(newparam.setup.redirinfo.id, call->cid_rdnis, sizeof(newparam.setup.redirinfo.id)-1);
540 newparam.setup.redirinfo.itype = INFO_ITYPE_CHAN;
541 newparam.setup.redirinfo.ntype = INFO_NTYPE_UNKNOWN;
543 switch(ast->cid.cid_pres & AST_PRES_RESTRICTION)
545 case AST_PRES_ALLOWED:
546 newparam.setup.callerinfo.present = INFO_PRESENT_ALLOWED;
548 case AST_PRES_RESTRICTED:
549 newparam.setup.callerinfo.present = INFO_PRESENT_RESTRICTED;
551 case AST_PRES_UNAVAILABLE:
552 newparam.setup.callerinfo.present = INFO_PRESENT_NOTAVAIL;
555 newparam.setup.callerinfo.present = INFO_PRESENT_NULL;
557 switch(ast->cid.cid_ton)
560 newparam.setup.callerinfo.ntype = INFO_NTYPE_SUBSCRIBER;
563 newparam.setup.callerinfo.ntype = INFO_NTYPE_NATIONAL;
566 newparam.setup.callerinfo.ntype = INFO_NTYPE_INTERNATIONAL;
569 newparam.setup.callerinfo.ntype = INFO_NTYPE_UNKNOWN;
571 newparam.setup.capainfo.bearer_capa = ast->transfercapability;
572 newparam.setup.capainfo.bearer_mode = INFO_BMODE_CIRCUIT;
574 newparam.setup.capainfo.source_mode = B_MODE_HDLC;
576 newparam.setup.capainfo.source_mode = B_MODE_TRANSPARENT;
577 newparam.setup.capainfo.bearer_info1 = (options.law=='a')?3:2;
579 newparam.setup.capainfo.hlc = INFO_HLC_NONE;
580 newparam.setup.capainfo.exthlc = INFO_HLC_NONE;
581 send_message(MESSAGE_SETUP, call->ref, &newparam);
583 /* change to outgoing setup state */
584 call->state = CHAN_LCR_STATE_OUT_SETUP;
588 * send dialing info to LCR
589 * this function is called, when setup acknowledge is received and dialing
592 static void send_dialque_to_lcr(struct chan_call *call)
594 union parameter newparam;
596 if (!call->ast || !call->ref || !call->dialque[0])
599 CDEBUG(call, call->ast, "Sending dial queue to LCR. (dialing=%s)\n", call->dialque);
601 /* send setup message to LCR */
602 memset(&newparam, 0, sizeof(union parameter));
603 strncpy(newparam.information.id, call->dialque, sizeof(newparam.information.id)-1);
604 call->dialque[0] = '\0';
605 send_message(MESSAGE_INFORMATION, call->ref, &newparam);
609 * in case of a bridge, the unsupported message can be forwarded directly
610 * to the remote call.
612 static void bridge_message_if_bridged(struct chan_call *call, int message_type, union parameter *param)
616 if (!call->bridge_call) return;
617 CDEBUG(call, NULL, "Sending message due briding.\n");
618 send_message(message_type, call->bridge_call->ref, param);
622 * send release message to LCR and import bchannel if exported
624 static void send_release_and_import(struct chan_call *call, int cause, int location)
626 union parameter newparam;
628 /* importing channel */
629 if (call->bchannel) {
630 memset(&newparam, 0, sizeof(union parameter));
631 newparam.bchannel.type = BCHANNEL_RELEASE;
632 newparam.bchannel.handle = call->bchannel->handle;
633 send_message(MESSAGE_BCHANNEL, call->ref, &newparam);
635 /* sending release */
636 memset(&newparam, 0, sizeof(union parameter));
637 newparam.disconnectinfo.cause = cause;
638 newparam.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
639 send_message(MESSAGE_RELEASE, call->ref, &newparam);
643 * check if extension matches and start asterisk
644 * if it can match, proceed
647 static void lcr_start_pbx(struct chan_call *call, struct ast_channel *ast, int complete)
650 union parameter newparam;
652 CDEBUG(call, ast, "Try to start pbx. (exten=%s context=%s complete=%s)\n", ast->exten, ast->context, complete?"yes":"no");
657 if (!ast_canmatch_extension(ast, ast->context, ast->exten, 1, call->oad))
659 CDEBUG(call, ast, "Got 'sending complete', but extension '%s' will not match at context '%s' - releasing.\n", ast->exten, ast->context);
663 if (!ast_exists_extension(ast, ast->context, ast->exten, 1, call->oad))
665 CDEBUG(call, ast, "Got 'sending complete', but extension '%s' would match at context '%s', if more digits would be dialed - releasing.\n", ast->exten, ast->context);
669 CDEBUG(call, ast, "Got 'sending complete', extensions matches.\n");
670 /* send setup acknowledge to lcr */
671 memset(&newparam, 0, sizeof(union parameter));
672 send_message(MESSAGE_PROCEEDING, call->ref, &newparam);
675 call->state = CHAN_LCR_STATE_IN_PROCEEDING;
680 if (ast_canmatch_extension(ast, ast->context, ast->exten, 1, call->oad))
682 /* send setup acknowledge to lcr */
683 if (call->state != CHAN_LCR_STATE_IN_DIALING) {
684 memset(&newparam, 0, sizeof(union parameter));
685 send_message(MESSAGE_OVERLAP, call->ref, &newparam);
689 call->state = CHAN_LCR_STATE_IN_DIALING;
691 /* if match, start pbx */
692 if (ast_exists_extension(ast, ast->context, ast->exten, 1, call->oad)) {
693 CDEBUG(call, ast, "Extensions matches.\n");
698 CDEBUG(call, ast, "Extensions may match, if more digits are dialed.\n");
706 CDEBUG(call, ast, "Releasing due to extension missmatch.\n");
707 send_release_and_import(call, cause, LOCATION_PRIVATE_LOCAL);
709 /* release asterisk */
710 ast->hangupcause = call->cause;
711 /* change to release state */
712 call->state = CHAN_LCR_STATE_RELEASE;
713 ast_hangup(ast); // call will be destroyed here
717 /* send setup to asterisk */
718 CDEBUG(call, ast, "Starting call to Asterisk due to matching extension.\n");
719 ret = ast_pbx_start(ast);
722 cause = (ret==-2)?34:27;
725 call->pbx_started = 1;
726 // if (call->state == CHAN_LCR_STATE_IN_DIALING)
727 ast_setstate(ast, AST_STATE_RINGING);
729 // ast_setstate(ast, AST_STATE_RINGING);
734 * incoming setup from LCR
736 static void lcr_in_setup(struct chan_call *call, int message_type, union parameter *param)
738 struct ast_channel *ast;
740 CDEBUG(call, NULL, "Incomming setup from LCR. (callerid %s, dialing %s)\n", param->setup.callerinfo.id, param->setup.dialinginfo.id);
742 /* create asterisk channel instrance */
743 ast = ast_channel_alloc(1, AST_STATE_RESERVED, NULL, NULL, "", NULL, "", 0, "%s/%d", lcr_type, ++glob_channel);
747 CERROR(call, NULL, "Failed to create Asterisk channel - releasing.\n");
748 send_release_and_import(call, CAUSE_RESSOURCEUNAVAIL, LOCATION_PRIVATE_LOCAL);
755 ast->tech_pvt = call;
756 ast->tech = &lcr_tech;
757 ast->fds[0] = call->pipe[0];
759 /* fill setup information */
760 if (param->setup.dialinginfo.id)
761 strncpy(ast->exten, param->setup.dialinginfo.id, AST_MAX_EXTENSION-1);
762 if (param->setup.context[0])
763 strncpy(ast->context, param->setup.context, AST_MAX_CONTEXT-1);
765 strncpy(ast->context, param->setup.callerinfo.interface, AST_MAX_CONTEXT-1);
766 if (param->setup.callerinfo.id[0])
767 ast->cid.cid_num = strdup(param->setup.callerinfo.id);
768 if (param->setup.callerinfo.name[0])
769 ast->cid.cid_name = strdup(param->setup.callerinfo.name);
770 if (param->setup.redirinfo.id[0])
771 ast->cid.cid_name = strdup(numberrize_callerinfo(param->setup.callerinfo.id, param->setup.callerinfo.ntype, options.national, options.international));
772 switch (param->setup.callerinfo.present)
774 case INFO_PRESENT_ALLOWED:
775 ast->cid.cid_pres = AST_PRES_ALLOWED;
777 case INFO_PRESENT_RESTRICTED:
778 ast->cid.cid_pres = AST_PRES_RESTRICTED;
781 ast->cid.cid_pres = AST_PRES_UNAVAILABLE;
783 switch (param->setup.callerinfo.ntype)
785 case INFO_NTYPE_SUBSCRIBER:
786 ast->cid.cid_ton = 4;
788 case INFO_NTYPE_NATIONAL:
789 ast->cid.cid_ton = 2;
791 case INFO_NTYPE_INTERNATIONAL:
792 ast->cid.cid_ton = 1;
795 ast->cid.cid_ton = 0;
797 ast->transfercapability = param->setup.capainfo.bearer_capa;
798 /* enable hdlc if transcap is data */
799 if (param->setup.capainfo.source_mode == B_MODE_HDLC)
801 strncpy(call->oad, numberrize_callerinfo(param->setup.callerinfo.id, param->setup.callerinfo.ntype, options.national, options.international), sizeof(call->oad)-1);
803 /* configure channel */
804 ast->nativeformats = (options.law=='a')?AST_FORMAT_ALAW:AST_FORMAT_ULAW;
805 ast->readformat = ast->rawreadformat = ast->nativeformats;
806 ast->writeformat = ast->rawwriteformat = ast->nativeformats;
808 ast->hangupcause = 0;
811 call->state = CHAN_LCR_STATE_IN_SETUP;
813 if (!call->pbx_started)
814 lcr_start_pbx(call, ast, param->setup.dialinginfo.sending_complete);
818 * incoming setup acknowledge from LCR
820 static void lcr_in_overlap(struct chan_call *call, int message_type, union parameter *param)
822 if (!call->ast) return;
824 CDEBUG(call, call->ast, "Incomming setup acknowledge from LCR.\n");
826 /* send pending digits in dialque */
827 if (call->dialque[0])
828 send_dialque_to_lcr(call);
829 /* change to overlap state */
830 call->state = CHAN_LCR_STATE_OUT_DIALING;
834 * incoming proceeding from LCR
836 static void lcr_in_proceeding(struct chan_call *call, int message_type, union parameter *param)
838 CDEBUG(call, call->ast, "Incomming proceeding from LCR.\n");
841 call->state = CHAN_LCR_STATE_OUT_PROCEEDING;
842 /* queue event for asterisk */
843 if (call->ast && call->pbx_started)
844 strncat(call->queue_string, "P", sizeof(call->queue_string)-1);
848 * incoming alerting from LCR
850 static void lcr_in_alerting(struct chan_call *call, int message_type, union parameter *param)
852 CDEBUG(call, call->ast, "Incomming alerting from LCR.\n");
855 call->state = CHAN_LCR_STATE_OUT_ALERTING;
856 /* queue event to asterisk */
857 if (call->ast && call->pbx_started)
858 strncat(call->queue_string, "R", sizeof(call->queue_string)-1);
862 * incoming connect from LCR
864 static void lcr_in_connect(struct chan_call *call, int message_type, union parameter *param)
866 union parameter newparam;
868 CDEBUG(call, call->ast, "Incomming connect (answer) from LCR.\n");
871 call->state = CHAN_LCR_STATE_CONNECT;
872 /* request bchannel */
873 if (!call->bchannel) {
874 CDEBUG(call, call->ast, "Requesting B-channel.\n");
875 memset(&newparam, 0, sizeof(union parameter));
876 newparam.bchannel.type = BCHANNEL_REQUEST;
877 send_message(MESSAGE_BCHANNEL, call->ref, &newparam);
879 /* copy connectinfo */
880 memcpy(&call->connectinfo, ¶m->connectinfo, sizeof(struct connect_info));
881 /* queue event to asterisk */
882 if (call->ast && call->pbx_started)
883 strncat(call->queue_string, "A", sizeof(call->queue_string)-1);
887 * incoming disconnect from LCR
889 static void lcr_in_disconnect(struct chan_call *call, int message_type, union parameter *param)
891 struct ast_channel *ast = call->ast;
893 CDEBUG(call, call->ast, "Incomming disconnect from LCR. (cause=%d)\n", param->disconnectinfo.cause);
896 call->state = CHAN_LCR_STATE_IN_DISCONNECT;
898 call->cause = param->disconnectinfo.cause;
899 call->location = param->disconnectinfo.location;
900 /* if bridge, forward disconnect and return */
903 if (call->bridge_call)
905 CDEBUG(call, call->ast, "Only signal disconnect via bridge.\n");
906 bridge_message_if_bridged(call, message_type, param);
910 /* release lcr with same cause */
911 send_release_and_import(call, call->cause, call->location);
913 /* change to release state */
914 call->state = CHAN_LCR_STATE_RELEASE;
915 /* queue release asterisk */
918 ast->hangupcause = call->cause;
919 if (call->pbx_started)
920 strcpy(call->queue_string, "H"); // overwrite other indications
922 ast_hangup(ast); // call will be destroyed here
928 * incoming release from LCR
930 static void lcr_in_release(struct chan_call *call, int message_type, union parameter *param)
932 struct ast_channel *ast = call->ast;
934 CDEBUG(call, call->ast, "Incomming release from LCR, releasing ref. (cause=%d)\n", param->disconnectinfo.cause);
938 /* change to release state */
939 call->state = CHAN_LCR_STATE_RELEASE;
940 /* copy release info */
943 call->cause = param->disconnectinfo.cause;
944 call->location = param->disconnectinfo.location;
946 /* if we have an asterisk instance, queue hangup, else we are done */
949 ast->hangupcause = call->cause;
950 if (call->pbx_started)
951 strcpy(call->queue_string, "H");
953 ast_hangup(ast); // call will be destroyed here
963 * incoming information from LCR
965 static void lcr_in_information(struct chan_call *call, int message_type, union parameter *param)
967 struct ast_channel *ast = call->ast;
969 CDEBUG(call, call->ast, "Incoming information from LCR. (dialing=%s)\n", param->information.id);
973 /* pbx not started */
974 if (!call->pbx_started)
976 CDEBUG(call, call->ast, "Asterisk not started, adding digits to number.\n");
977 strncat(ast->exten, param->information.id, AST_MAX_EXTENSION-1);
978 lcr_start_pbx(call, ast, param->information.sending_complete);
982 /* change dailing state after setup */
983 if (call->state == CHAN_LCR_STATE_IN_SETUP) {
984 CDEBUG(call, call->ast, "Changing from SETUP to DIALING state.\n");
985 call->state = CHAN_LCR_STATE_IN_DIALING;
986 // ast_setstate(ast, AST_STATE_DIALING);
990 if (call->state == CHAN_LCR_STATE_IN_DIALING && param->information.id[0])
991 strncat(call->queue_string, param->information.id, sizeof(call->queue_string)-1);
993 /* use bridge to forware message not supported by asterisk */
994 if (call->state == CHAN_LCR_STATE_CONNECT) {
995 CDEBUG(call, call->ast, "Call is connected, briding.\n");
996 bridge_message_if_bridged(call, message_type, param);
1001 * incoming information from LCR
1003 static void lcr_in_notify(struct chan_call *call, int message_type, union parameter *param)
1005 union parameter newparam;
1007 CDEBUG(call, call->ast, "Incomming notify from LCR. (notify=%d)\n", param->notifyinfo.notify);
1009 /* request bchannel, if call is resumed and we don't have it */
1010 if (param->notifyinfo.notify == INFO_NOTIFY_USER_RESUMED && !call->bchannel && call->ref) {
1011 CDEBUG(call, call->ast, "Reqesting bchannel at resume.\n");
1012 memset(&newparam, 0, sizeof(union parameter));
1013 newparam.bchannel.type = BCHANNEL_REQUEST;
1014 send_message(MESSAGE_BCHANNEL, call->ref, &newparam);
1017 if (!call->ast) return;
1019 /* use bridge to forware message not supported by asterisk */
1020 bridge_message_if_bridged(call, message_type, param);
1024 * incoming information from LCR
1026 static void lcr_in_facility(struct chan_call *call, int message_type, union parameter *param)
1028 CDEBUG(call, call->ast, "Incomming facility from LCR.\n");
1030 if (!call->ast) return;
1032 /* use bridge to forware message not supported by asterisk */
1033 bridge_message_if_bridged(call, message_type, param);
1037 * got dtmf from bchannel (locked state)
1039 void lcr_in_dtmf(struct chan_call *call, int val)
1041 struct ast_channel *ast = call->ast;
1046 if (!call->pbx_started)
1049 CDEBUG(call, call->ast, "Recognised DTMF digit '%c'.\n", val);
1052 strncat(call->queue_string, digit, sizeof(call->queue_string)-1);
1056 * message received from LCR
1058 int receive_message(int message_type, unsigned int ref, union parameter *param)
1060 struct bchannel *bchannel;
1061 struct chan_call *call;
1062 union parameter newparam;
1064 memset(&newparam, 0, sizeof(union parameter));
1066 /* handle bchannel message*/
1067 if (message_type == MESSAGE_BCHANNEL)
1069 switch(param->bchannel.type)
1071 case BCHANNEL_ASSIGN:
1072 CDEBUG(NULL, NULL, "Received BCHANNEL_ASSIGN message. (handle=%08lx) for ref %d\n", param->bchannel.handle, ref);
1073 if ((bchannel = find_bchannel_handle(param->bchannel.handle)))
1075 CERROR(NULL, NULL, "bchannel handle %x already assigned.\n", (int)param->bchannel.handle);
1078 /* create bchannel */
1079 bchannel = alloc_bchannel(param->bchannel.handle);
1082 CERROR(NULL, NULL, "alloc bchannel handle %x failed.\n", (int)param->bchannel.handle);
1086 /* configure channel */
1087 bchannel->b_tx_gain = param->bchannel.tx_gain;
1088 bchannel->b_rx_gain = param->bchannel.rx_gain;
1089 strncpy(bchannel->b_pipeline, param->bchannel.pipeline, sizeof(bchannel->b_pipeline)-1);
1090 if (param->bchannel.crypt_len && param->bchannel.crypt_len <= sizeof(bchannel->b_bf_key))
1092 bchannel->b_bf_len = param->bchannel.crypt_len;
1093 memcpy(bchannel->b_bf_key, param->bchannel.crypt, param->bchannel.crypt_len);
1095 bchannel->b_txdata = 0;
1096 bchannel->b_dtmf = 1;
1097 bchannel->b_tx_dejitter = 1;
1099 /* in case, ref is not set, this bchannel instance must
1100 * be created until it is removed again by LCR */
1102 call = find_call_ref(ref);
1105 bchannel->call = call;
1106 call->bchannel = bchannel;
1108 bchannel_dtmf(bchannel, 1);
1110 bchannel_blowfish(bchannel, call->bf_key, call->bf_len);
1111 if (call->pipeline[0])
1112 bchannel_pipeline(bchannel, call->pipeline);
1114 bchannel_gain(bchannel, call->rx_gain, 0);
1116 bchannel_gain(bchannel, call->tx_gain, 1);
1117 if (call->bridge_id) {
1118 CDEBUG(call, call->ast, "Join bchannel, because call is already bridged.\n");
1119 bchannel_join(bchannel, call->bridge_id);
1121 /* create only, if call exists, othewhise it bchannel is freed below... */
1122 if (bchannel_create(bchannel, ((call->nodsp)?1:0) + ((call->hdlc)?2:0)))
1123 bchannel_activate(bchannel, 1);
1126 newparam.bchannel.type = BCHANNEL_ASSIGN_ACK;
1127 newparam.bchannel.handle = param->bchannel.handle;
1128 send_message(MESSAGE_BCHANNEL, 0, &newparam);
1129 /* if call has released before bchannel is assigned */
1131 newparam.bchannel.type = BCHANNEL_RELEASE;
1132 newparam.bchannel.handle = param->bchannel.handle;
1133 send_message(MESSAGE_BCHANNEL, 0, &newparam);
1138 case BCHANNEL_REMOVE:
1139 CDEBUG(NULL, NULL, "Received BCHANNEL_REMOVE message. (handle=%08lx)\n", param->bchannel.handle);
1140 if (!(bchannel = find_bchannel_handle(param->bchannel.handle)))
1142 CERROR(NULL, NULL, "Bchannel handle %x not assigned.\n", (int)param->bchannel.handle);
1145 /* unklink from call and destroy bchannel */
1146 free_bchannel(bchannel);
1149 newparam.bchannel.type = BCHANNEL_REMOVE_ACK;
1150 newparam.bchannel.handle = param->bchannel.handle;
1151 send_message(MESSAGE_BCHANNEL, 0, &newparam);
1156 CDEBUG(NULL, NULL, "Received unknown bchannel message %d.\n", param->bchannel.type);
1161 /* handle new ref */
1162 if (message_type == MESSAGE_NEWREF)
1164 if (param->direction)
1166 /* new ref from lcr */
1167 CDEBUG(NULL, NULL, "Received new ref by LCR, due to incomming call. (ref=%ld)\n", ref);
1168 if (!ref || find_call_ref(ref))
1170 CERROR(NULL, NULL, "Illegal new ref %ld received.\n", ref);
1173 /* allocate new call instance */
1174 call = alloc_call();
1176 call->state = CHAN_LCR_STATE_IN_PREPARE;
1179 call->ref_was_assigned = 1;
1180 /* wait for setup (or release from asterisk) */
1183 /* new ref, as requested from this remote application */
1184 CDEBUG(NULL, NULL, "Received new ref by LCR, as requested from chan_lcr. (ref=%ld)\n", ref);
1185 call = find_call_ref(0);
1188 /* send release, if ref does not exist */
1189 CDEBUG(NULL, NULL, "No call found, that requests a ref.\n");
1190 send_release_and_import(call, CAUSE_NORMAL, LOCATION_PRIVATE_LOCAL);
1195 call->ref_was_assigned = 1;
1196 /* send pending setup info */
1197 if (call->state == CHAN_LCR_STATE_OUT_PREPARE)
1198 send_setup_to_lcr(call);
1199 /* release if asterisk has signed off */
1200 else if (call->state == CHAN_LCR_STATE_RELEASE)
1204 send_release_and_import(call, call->cause, call->location);
1206 send_release_and_import(call, CAUSE_NORMAL, LOCATION_PRIVATE_LOCAL);
1218 CERROR(NULL, NULL, "Received message %d without ref.\n", message_type);
1221 call = find_call_ref(ref);
1224 /* ignore ref that is not used (anymore) */
1225 CDEBUG(NULL, NULL, "Message %d from LCR ignored, because no call instance found.\n", message_type);
1229 /* handle messages */
1230 switch(message_type)
1233 lcr_in_setup(call, message_type, param);
1236 case MESSAGE_OVERLAP:
1237 lcr_in_overlap(call, message_type, param);
1240 case MESSAGE_PROCEEDING:
1241 lcr_in_proceeding(call, message_type, param);
1244 case MESSAGE_ALERTING:
1245 lcr_in_alerting(call, message_type, param);
1248 case MESSAGE_CONNECT:
1249 lcr_in_connect(call, message_type, param);
1252 case MESSAGE_DISCONNECT:
1253 lcr_in_disconnect(call, message_type, param);
1256 case MESSAGE_RELEASE:
1257 lcr_in_release(call, message_type, param);
1260 case MESSAGE_INFORMATION:
1261 lcr_in_information(call, message_type, param);
1264 case MESSAGE_NOTIFY:
1265 lcr_in_notify(call, message_type, param);
1268 case MESSAGE_FACILITY:
1269 lcr_in_facility(call, message_type, param);
1272 case MESSAGE_PATTERN: // audio available from LCR
1275 case MESSAGE_NOPATTERN: // audio not available from LCR
1278 case MESSAGE_AUDIOPATH: // if remote audio connected or hold
1279 call->audiopath = param->audiopath;
1283 CDEBUG(call, call->ast, "Message %d from LCR unhandled.\n", message_type);
1290 * release all calls (due to broken socket)
1292 static void release_all_calls(void)
1294 struct chan_call *call;
1299 /* no ast, so we may directly free call */
1301 CDEBUG(call, NULL, "Freeing call, because no Asterisk channel is linked.\n");
1305 /* already in release process */
1306 if (call->state == CHAN_LCR_STATE_RELEASE) {
1310 /* release or queue release */
1312 call->state = CHAN_LCR_STATE_RELEASE;
1313 if (!call->pbx_started) {
1314 CDEBUG(call, call->ast, "Releasing call, because no Asterisk channel is not started.\n");
1315 ast_hangup(call->ast); // call will be destroyed here
1318 CDEBUG(call, call->ast, "Queue call release, because Asterisk channel is running.\n");
1319 strcpy(call->queue_string, "H");
1323 /* release all bchannels */
1324 while(bchannel_first)
1325 free_bchannel(bchannel_first);
1330 * warning! not thread safe
1331 * returns -1 for socket error, 0 for no work, 1 for work
1333 int handle_socket(void)
1337 struct admin_list *admin;
1338 struct admin_message msg;
1340 /* read from socket */
1341 len = read(lcr_sock, &msg, sizeof(msg));
1344 CERROR(NULL, NULL, "Socket closed.\n");
1345 return(-1); // socket closed
1349 if (len != sizeof(msg))
1351 CERROR(NULL, NULL, "Socket short read. (len %d)\n", len);
1352 return(-1); // socket error
1354 if (msg.message != ADMIN_MESSAGE)
1356 CERROR(NULL, NULL, "Socket received illegal message %d.\n", msg.message);
1359 receive_message(msg.u.msg.type, msg.u.msg.ref, &msg.u.msg.param);
1363 if (errno != EWOULDBLOCK)
1365 CERROR(NULL, NULL, "Socket failed (errno %d).\n", errno);
1370 /* write to socket */
1373 admin = admin_first;
1374 len = write(lcr_sock, &admin->msg, sizeof(msg));
1377 CERROR(NULL, NULL, "Socket closed.\n");
1378 return(-1); // socket closed
1382 if (len != sizeof(msg))
1384 CERROR(NULL, NULL, "Socket short write. (len %d)\n", len);
1385 return(-1); // socket error
1388 admin_first = admin->next;
1394 if (errno != EWOULDBLOCK)
1396 CERROR(NULL, NULL, "Socket failed (errno %d).\n", errno);
1405 * open and close socket and thread
1407 int open_socket(void)
1411 struct sockaddr_un sock_address;
1412 unsigned int on = 1;
1413 union parameter param;
1416 if ((lcr_sock = socket(PF_UNIX, SOCK_STREAM, 0)) < 0)
1418 CERROR(NULL, NULL, "Failed to create socket.\n");
1422 /* set socket address and name */
1423 memset(&sock_address, 0, sizeof(sock_address));
1424 sock_address.sun_family = PF_UNIX;
1425 sprintf(sock_address.sun_path, SOCKET_NAME, options.lock);
1427 /* connect socket */
1428 if ((conn = connect(lcr_sock, (struct sockaddr *)&sock_address, SUN_LEN(&sock_address))) < 0)
1432 CDEBUG(NULL, NULL, "Failed to connect to socket '%s'. Is LCR running?\n", sock_address.sun_path);
1436 /* set non-blocking io */
1437 if ((ret = ioctl(lcr_sock, FIONBIO, (unsigned char *)(&on))) < 0)
1441 CERROR(NULL, NULL, "Failed to set socket into non-blocking IO.\n");
1445 /* enque hello message */
1446 memset(¶m, 0, sizeof(param));
1447 strcpy(param.hello.application, "asterisk");
1448 send_message(MESSAGE_HELLO, 0, ¶m);
1453 void close_socket(void)
1455 struct admin_list *admin, *temp;
1457 /* flush pending messages */
1458 admin = admin_first;
1461 admin = admin->next;
1473 /* sending queue to asterisk */
1474 static int queue_send(void)
1477 struct chan_call *call;
1478 struct ast_channel *ast;
1479 struct ast_frame fr;
1484 p = call->queue_string;
1487 /* there is something to queue */
1488 if (!ast_channel_trylock(ast)) { /* succeed */
1492 CDEBUG(call, ast, "Sending queued PROCEEDING to Asterisk.\n");
1493 ast_queue_control(ast, AST_CONTROL_PROCEEDING);
1496 CDEBUG(call, ast, "Sending queued RINGING to Asterisk.\n");
1497 ast_queue_control(ast, AST_CONTROL_RINGING);
1500 CDEBUG(call, ast, "Sending queued ANSWER to Asterisk.\n");
1501 ast_queue_control(ast, AST_CONTROL_ANSWER);
1504 CDEBUG(call, ast, "Sending queued HANGUP to Asterisk.\n");
1505 ast_queue_hangup(ast);
1507 case '1': case '2': case '3': case 'a':
1508 case '4': case '5': case '6': case 'b':
1509 case '7': case '8': case '9': case 'c':
1510 case '*': case '0': case '#': case 'd':
1511 CDEBUG(call, ast, "Sending queued digit '%c' to Asterisk.\n", *p);
1512 /* send digit to asterisk */
1513 memset(&fr, 0, sizeof(fr));
1514 fr.frametype = AST_FRAME_DTMF_BEGIN;
1516 fr.delivery = ast_tv(0, 0);
1517 ast_queue_frame(ast, &fr);
1518 fr.frametype = AST_FRAME_DTMF_END;
1519 ast_queue_frame(ast, &fr);
1522 CDEBUG(call, ast, "Ignoring queued digit 0x%02d.\n", *p);
1526 call->queue_string[0] = '\0';
1527 ast_channel_unlock(ast);
1537 /* signal handler */
1538 void sighandler(int sigset)
1542 /* chan_lcr thread */
1543 static void *chan_thread(void *arg)
1547 union parameter param;
1548 time_t retry = 0, now;
1550 bchannel_pid = getpid();
1552 // signal(SIGPIPE, sighandler);
1554 memset(¶m, 0, sizeof(union parameter));
1558 ast_mutex_lock(&chan_lock);
1565 ret = handle_socket();
1567 CERROR(NULL, NULL, "Handling of socket failed - closing for some seconds.\n");
1569 release_all_calls();
1576 if (retry && now-retry > 5) {
1577 CDEBUG(NULL, NULL, "Retry to open socket.\n");
1579 if (open_socket() < 0) {
1588 ret = bchannel_handle();
1592 /* handle messages to asterisk */
1597 /* delay if no work done */
1599 ast_mutex_unlock(&chan_lock);
1601 ast_mutex_lock(&chan_lock);
1607 CERROR(NULL, NULL, "Thread exit.\n");
1609 ast_mutex_unlock(&chan_lock);
1611 // signal(SIGPIPE, SIG_DFL);
1617 * new asterisk instance
1620 struct ast_channel *lcr_request(const char *type, int format, void *data, int *cause)
1622 char exten[256], *dial, *interface, *opt;
1623 struct ast_channel *ast;
1624 struct chan_call *call;
1626 ast_mutex_lock(&chan_lock);
1627 CDEBUG(NULL, NULL, "Received request from Asterisk. (data=%s)\n", (char *)data);
1629 /* if socket is closed */
1632 CERROR(NULL, NULL, "Rejecting call from Asterisk, because LCR not running.\n");
1633 ast_mutex_unlock(&chan_lock);
1637 /* create call instance */
1638 call = alloc_call();
1641 /* failed to create instance */
1642 ast_mutex_unlock(&chan_lock);
1646 /* create asterisk channel instrance */
1647 ast = ast_channel_alloc(1, AST_STATE_RESERVED, NULL, NULL, "", NULL, "", 0, "%s/%d", lcr_type, ++glob_channel);
1650 CERROR(NULL, NULL, "Failed to create Asterisk channel.\n");
1652 /* failed to create instance */
1653 ast_mutex_unlock(&chan_lock);
1656 ast->tech = &lcr_tech;
1657 ast->tech_pvt = (void *)1L; // set pointer or asterisk will not call
1658 /* configure channel */
1659 ast->nativeformats = (options.law=='a')?AST_FORMAT_ALAW:AST_FORMAT_ULAW;
1660 ast->readformat = ast->rawreadformat = ast->nativeformats;
1661 ast->writeformat = ast->rawwriteformat = ast->nativeformats;
1663 ast->hangupcause = 0;
1667 ast->tech_pvt = call;
1668 ast->fds[0] = call->pipe[0];
1669 call->pbx_started = 0;
1671 call->state = CHAN_LCR_STATE_OUT_PREPARE;
1674 * Extract interface, dialstring, options from data.
1677 * <interface>/<dialstring>
1678 * <interface>/<dialstring>/options
1680 strncpy(exten, (char *)data, sizeof(exten)-1);
1681 exten[sizeof(exten)-1] = '\0';
1682 if ((dial = strchr(exten, '/'))) {
1685 if ((opt = strchr(dial, '/')))
1694 strncpy(call->interface, interface, sizeof(call->interface)-1);
1695 strncpy(call->dialstring, dial, sizeof(call->dialstring)-1);
1696 apply_opt(call, (char *)opt);
1698 ast_mutex_unlock(&chan_lock);
1703 * call from asterisk
1705 static int lcr_call(struct ast_channel *ast, char *dest, int timeout)
1707 union parameter newparam;
1708 struct chan_call *call;
1710 ast_mutex_lock(&chan_lock);
1711 call = ast->tech_pvt;
1713 CERROR(NULL, ast, "Received call from Asterisk, but call instance does not exist.\n");
1714 ast_mutex_unlock(&chan_lock);
1718 CDEBUG(NULL, ast, "Received call from Asterisk.\n");
1720 /* pbx process is started */
1721 call->pbx_started = 1;
1722 /* send MESSAGE_NEWREF */
1723 memset(&newparam, 0, sizeof(union parameter));
1724 newparam.direction = 0; /* request from app */
1725 send_message(MESSAGE_NEWREF, 0, &newparam);
1727 /* set hdlc if capability requires hdlc */
1728 if (ast->transfercapability == INFO_BC_DATAUNRESTRICTED
1729 || ast->transfercapability == INFO_BC_DATARESTRICTED
1730 || ast->transfercapability == INFO_BC_VIDEO)
1732 /* if hdlc is forced by option, we change transcap to data */
1734 && ast->transfercapability != INFO_BC_DATAUNRESTRICTED
1735 && ast->transfercapability != INFO_BC_DATARESTRICTED
1736 && ast->transfercapability != INFO_BC_VIDEO)
1737 ast->transfercapability = INFO_BC_DATAUNRESTRICTED;
1739 call->cid_num[0] = 0;
1740 call->cid_name[0] = 0;
1741 call->cid_rdnis[0] = 0;
1743 if (ast->cid.cid_num) if (ast->cid.cid_num[0])
1744 strncpy(call->cid_num, ast->cid.cid_num,
1745 sizeof(call->cid_num)-1);
1747 if (ast->cid.cid_name) if (ast->cid.cid_name[0])
1748 strncpy(call->cid_name, ast->cid.cid_name,
1749 sizeof(call->cid_name)-1);
1750 if (ast->cid.cid_rdnis) if (ast->cid.cid_rdnis[0])
1751 strncpy(call->cid_rdnis, ast->cid.cid_rdnis,
1752 sizeof(call->cid_rdnis)-1);
1754 ast_mutex_unlock(&chan_lock);
1758 static int lcr_digit_begin(struct ast_channel *ast, char digit)
1760 struct chan_call *call;
1761 union parameter newparam;
1764 /* only pass IA5 number space */
1765 if (digit > 126 || digit < 32)
1768 ast_mutex_lock(&chan_lock);
1769 call = ast->tech_pvt;
1771 CERROR(NULL, ast, "Received digit from Asterisk, but no call instance exists.\n");
1772 ast_mutex_unlock(&chan_lock);
1776 CDEBUG(call, ast, "Received digit '%c' from Asterisk.\n", digit);
1778 /* send information or queue them */
1779 if (call->ref && call->state == CHAN_LCR_STATE_OUT_DIALING)
1781 CDEBUG(call, ast, "Sending digit to LCR, because we are in dialing state.\n");
1782 memset(&newparam, 0, sizeof(union parameter));
1783 newparam.information.id[0] = digit;
1784 newparam.information.id[1] = '\0';
1785 send_message(MESSAGE_INFORMATION, call->ref, &newparam);
1788 && (call->state == CHAN_LCR_STATE_OUT_PREPARE || call->state == CHAN_LCR_STATE_OUT_SETUP))
1790 CDEBUG(call, ast, "Queue digits, because we are in setup/dialing state and have no ref yet.\n");
1792 strncat(call->dialque, buf, strlen(call->dialque)-1);
1795 ast_mutex_unlock(&chan_lock);
1799 static int lcr_digit_end(struct ast_channel *ast, char digit, unsigned int duration)
1801 printf("DIGIT END %c\n", digit);
1805 static int lcr_answer(struct ast_channel *ast)
1807 union parameter newparam;
1808 struct chan_call *call;
1810 ast_mutex_lock(&chan_lock);
1811 call = ast->tech_pvt;
1813 CERROR(NULL, ast, "Received answer from Asterisk, but no call instance exists.\n");
1814 ast_mutex_unlock(&chan_lock);
1818 CDEBUG(call, ast, "Received answer from Asterisk (maybe during lcr_bridge).\n");
1820 /* copy connectinfo, if bridged */
1821 if (call->bridge_call)
1822 memcpy(&call->connectinfo, &call->bridge_call->connectinfo, sizeof(struct connect_info));
1823 /* send connect message to lcr */
1824 if (call->state != CHAN_LCR_STATE_CONNECT) {
1825 memset(&newparam, 0, sizeof(union parameter));
1826 memcpy(&newparam.connectinfo, &call->connectinfo, sizeof(struct connect_info));
1827 send_message(MESSAGE_CONNECT, call->ref, &newparam);
1828 call->state = CHAN_LCR_STATE_CONNECT;
1831 /* request bchannel */
1832 if (!call->bchannel) {
1833 CDEBUG(call, ast, "Requesting B-channel.\n");
1834 memset(&newparam, 0, sizeof(union parameter));
1835 newparam.bchannel.type = BCHANNEL_REQUEST;
1836 send_message(MESSAGE_BCHANNEL, call->ref, &newparam);
1839 // memset(&newparam, 0, sizeof(union parameter));
1840 // send_message(MESSAGE_ENABLEKEYPAD, call->ref, &newparam);
1843 CDEBUG(call, ast, "DTMF is disabled by option.\n");
1847 ast_mutex_unlock(&chan_lock);
1851 static int lcr_hangup(struct ast_channel *ast)
1853 struct chan_call *call;
1854 pthread_t tid = pthread_self();
1856 if (!pthread_equal(tid, chan_tid))
1857 ast_mutex_lock(&chan_lock);
1858 call = ast->tech_pvt;
1860 CERROR(NULL, ast, "Received hangup from Asterisk, but no call instance exists.\n");
1861 if (!pthread_equal(tid, chan_tid))
1862 ast_mutex_unlock(&chan_lock);
1866 if (!pthread_equal(tid, chan_tid))
1867 CDEBUG(call, ast, "Received hangup from Asterisk thread.\n");
1869 CDEBUG(call, ast, "Received hangup from LCR thread.\n");
1871 /* disconnect asterisk, maybe not required */
1872 ast->tech_pvt = NULL;
1877 CDEBUG(call, ast, "Releasing ref and freeing call instance.\n");
1878 if (ast->hangupcause > 0)
1879 send_release_and_import(call, ast->hangupcause, LOCATION_PRIVATE_LOCAL);
1881 send_release_and_import(call, CAUSE_NORMAL, LOCATION_PRIVATE_LOCAL);
1884 if (!pthread_equal(tid, chan_tid))
1885 ast_mutex_unlock(&chan_lock);
1889 /* ref is not set, due to prepare setup or release */
1890 if (call->state == CHAN_LCR_STATE_RELEASE)
1892 /* we get the response to our release */
1893 CDEBUG(call, ast, "Freeing call instance, because we have no ref AND we are requesting no ref.\n");
1897 /* during prepare, we change to release state */
1898 CDEBUG(call, ast, "We must wait until we received our ref, until we can free call instance.\n");
1899 call->state = CHAN_LCR_STATE_RELEASE;
1902 if (!pthread_equal(tid, chan_tid))
1903 ast_mutex_unlock(&chan_lock);
1907 static int lcr_write(struct ast_channel *ast, struct ast_frame *f)
1909 struct chan_call *call;
1912 CDEBUG(NULL, ast, "No subclass\n");
1913 if (!(f->subclass & ast->nativeformats))
1914 CDEBUG(NULL, ast, "Unexpected format.\n");
1916 ast_mutex_lock(&chan_lock);
1917 call = ast->tech_pvt;
1919 ast_mutex_unlock(&chan_lock);
1922 if (call->bchannel && f->samples)
1923 bchannel_transmit(call->bchannel, f->data, f->samples);
1924 ast_mutex_unlock(&chan_lock);
1929 static struct ast_frame *lcr_read(struct ast_channel *ast)
1931 struct chan_call *call;
1934 ast_mutex_lock(&chan_lock);
1935 call = ast->tech_pvt;
1937 ast_mutex_unlock(&chan_lock);
1940 if (call->pipe[0] > -1) {
1941 if (call->rebuffer && !call->hdlc) {
1942 len = read(call->pipe[0], call->read_buff, 160);
1944 len = read(call->pipe[0], call->read_buff, sizeof(call->read_buff));
1946 if (len < 0 && errno == EAGAIN) {
1947 ast_mutex_unlock(&chan_lock);
1948 return &ast_null_frame;
1951 close(call->pipe[0]);
1953 ast_mutex_unlock(&chan_lock);
1958 call->read_fr.frametype = AST_FRAME_VOICE;
1959 call->read_fr.subclass = ast->nativeformats;
1960 call->read_fr.datalen = len;
1961 call->read_fr.samples = len;
1962 call->read_fr.delivery = ast_tv(0,0);
1963 call->read_fr.data = call->read_buff;
1964 ast_mutex_unlock(&chan_lock);
1966 return &call->read_fr;
1969 static int lcr_indicate(struct ast_channel *ast, int cond, const void *data, size_t datalen)
1971 union parameter newparam;
1973 struct chan_call *call;
1975 ast_mutex_lock(&chan_lock);
1976 call = ast->tech_pvt;
1978 CERROR(NULL, ast, "Received indicate from Asterisk, but no call instance exists.\n");
1979 ast_mutex_unlock(&chan_lock);
1984 case AST_CONTROL_BUSY:
1985 CDEBUG(call, ast, "Received indicate AST_CONTROL_BUSY from Asterisk.\n");
1986 ast_setstate(ast, AST_STATE_BUSY);
1987 if (call->state != CHAN_LCR_STATE_OUT_DISCONNECT) {
1988 /* send message to lcr */
1989 memset(&newparam, 0, sizeof(union parameter));
1990 newparam.disconnectinfo.cause = 17;
1991 newparam.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
1992 send_message(MESSAGE_DISCONNECT, call->ref, &newparam);
1994 call->state = CHAN_LCR_STATE_OUT_DISCONNECT;
1997 case AST_CONTROL_CONGESTION:
1998 CDEBUG(call, ast, "Received indicate AST_CONTROL_CONGESTION from Asterisk. (cause %d)\n", ast->hangupcause);
1999 if (call->state != CHAN_LCR_STATE_OUT_DISCONNECT) {
2000 /* send message to lcr */
2001 memset(&newparam, 0, sizeof(union parameter));
2002 newparam.disconnectinfo.cause = ast->hangupcause;
2003 newparam.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
2004 send_message(MESSAGE_DISCONNECT, call->ref, &newparam);
2006 call->state = CHAN_LCR_STATE_OUT_DISCONNECT;
2009 case AST_CONTROL_PROCEEDING:
2010 CDEBUG(call, ast, "Received indicate AST_CONTROL_PROCEEDING from Asterisk.\n");
2011 if (call->state == CHAN_LCR_STATE_IN_SETUP
2012 || call->state == CHAN_LCR_STATE_IN_DIALING) {
2013 /* send message to lcr */
2014 memset(&newparam, 0, sizeof(union parameter));
2015 send_message(MESSAGE_PROCEEDING, call->ref, &newparam);
2017 call->state = CHAN_LCR_STATE_IN_PROCEEDING;
2020 case AST_CONTROL_RINGING:
2021 CDEBUG(call, ast, "Received indicate AST_CONTROL_RINGING from Asterisk.\n");
2022 ast_setstate(ast, AST_STATE_RINGING);
2023 if (call->state == CHAN_LCR_STATE_IN_SETUP
2024 || call->state == CHAN_LCR_STATE_IN_DIALING
2025 || call->state == CHAN_LCR_STATE_IN_PROCEEDING) {
2026 /* send message to lcr */
2027 memset(&newparam, 0, sizeof(union parameter));
2028 send_message(MESSAGE_ALERTING, call->ref, &newparam);
2030 call->state = CHAN_LCR_STATE_IN_ALERTING;
2034 CDEBUG(call, ast, "Received indicate -1.\n");
2038 case AST_CONTROL_VIDUPDATE:
2039 CDEBUG(call, ast, "Received indicate AST_CONTROL_VIDUPDATE.\n");
2042 case AST_CONTROL_HOLD:
2043 CDEBUG(call, ast, "Received indicate AST_CONTROL_HOLD from Asterisk.\n");
2044 /* send message to lcr */
2045 memset(&newparam, 0, sizeof(union parameter));
2046 newparam.notifyinfo.notify = INFO_NOTIFY_REMOTE_HOLD;
2047 send_message(MESSAGE_NOTIFY, call->ref, &newparam);
2049 /*start music onhold*/
2050 ast_moh_start(ast,data,ast->musicclass);
2053 case AST_CONTROL_UNHOLD:
2054 CDEBUG(call, ast, "Received indicate AST_CONTROL_UNHOLD from Asterisk.\n");
2055 /* send message to lcr */
2056 memset(&newparam, 0, sizeof(union parameter));
2057 newparam.notifyinfo.notify = INFO_NOTIFY_REMOTE_RETRIEVAL;
2058 send_message(MESSAGE_NOTIFY, call->ref, &newparam);
2064 #ifdef AST_CONTROL_SRCUPDATE
2065 case AST_CONTROL_SRCUPDATE:
2066 CDEBUG(call, ast, "Received indicate AST_CONTROL_SRCUPDATE from Asterisk.\n");
2071 CERROR(call, ast, "Received indicate from Asterisk with unknown condition %d.\n", cond);
2077 ast_mutex_unlock(&chan_lock);
2084 static int lcr_fixup(struct ast_channel *oldast, struct ast_channel *ast)
2086 struct chan_call *call;
2092 ast_mutex_lock(&chan_lock);
2093 call = ast->tech_pvt;
2095 CERROR(NULL, ast, "Received fixup from Asterisk, but no call instance exists.\n");
2096 ast_mutex_unlock(&chan_lock);
2100 CDEBUG(call, ast, "Received fixup from Asterisk.\n");
2102 ast_mutex_unlock(&chan_lock);
2107 * send_text asterisk
2109 static int lcr_send_text(struct ast_channel *ast, const char *text)
2111 struct chan_call *call;
2112 union parameter newparam;
2114 ast_mutex_lock(&chan_lock);
2115 call = ast->tech_pvt;
2117 CERROR(NULL, ast, "Received send_text from Asterisk, but no call instance exists.\n");
2118 ast_mutex_unlock(&chan_lock);
2122 CDEBUG(call, ast, "Received send_text from Asterisk. (text=%s)\n", text);
2123 memset(&newparam, 0, sizeof(union parameter));
2124 strncpy(newparam.notifyinfo.display, text, sizeof(newparam.notifyinfo.display)-1);
2125 send_message(MESSAGE_NOTIFY, call->ref, &newparam);
2126 ast_mutex_lock(&chan_lock);
2133 enum ast_bridge_result lcr_bridge(struct ast_channel *ast1,
2134 struct ast_channel *ast2, int flags,
2135 struct ast_frame **fo,
2136 struct ast_channel **rc, int timeoutms)
2139 struct chan_call *call1, *call2;
2140 struct ast_channel *carr[2], *who;
2142 struct ast_frame *f;
2145 CDEBUG(NULL, NULL, "Received briding request from Asterisk.\n");
2150 /* join via dsp (if the channels are currently open) */
2151 ast_mutex_lock(&chan_lock);
2152 call1 = ast1->tech_pvt;
2153 call2 = ast2->tech_pvt;
2154 if (!call1 || !call2) {
2155 CDEBUG(NULL, NULL, "Bridge, but we don't have two call instances, exitting.\n");
2156 ast_mutex_unlock(&chan_lock);
2157 return AST_BRIDGE_COMPLETE;
2160 /* join, if both call instances uses dsp */
2161 if (!call1->nodsp && !call2->nodsp) {
2162 CDEBUG(NULL, NULL, "Both calls use DSP, briding via DSP.\n");
2164 /* get bridge id and join */
2165 bridge_id = new_bridge_id();
2167 call1->bridge_id = bridge_id;
2168 if (call1->bchannel)
2169 bchannel_join(call1->bchannel, bridge_id);
2171 call2->bridge_id = bridge_id;
2172 if (call2->bchannel)
2173 bchannel_join(call2->bchannel, bridge_id);
2175 if (call1->nodsp && call2->nodsp)
2176 CDEBUG(NULL, NULL, "Both calls use no DSP, briding in channel driver.\n");
2178 CDEBUG(NULL, NULL, "One call uses no DSP, briding in channel driver.\n");
2179 call1->bridge_call = call2;
2180 call2->bridge_call = call1;
2182 if (call1->state == CHAN_LCR_STATE_IN_SETUP
2183 || call1->state == CHAN_LCR_STATE_IN_DIALING
2184 || call1->state == CHAN_LCR_STATE_IN_PROCEEDING
2185 || call1->state == CHAN_LCR_STATE_IN_ALERTING) {
2186 CDEBUG(call1, ast1, "Bridge established before lcr_answer, so we call it ourself: Calling lcr_answer...\n");
2189 if (call2->state == CHAN_LCR_STATE_IN_SETUP
2190 || call2->state == CHAN_LCR_STATE_IN_DIALING
2191 || call2->state == CHAN_LCR_STATE_IN_PROCEEDING
2192 || call2->state == CHAN_LCR_STATE_IN_ALERTING) {
2193 CDEBUG(call2, ast2, "Bridge established before lcr_answer, so we call it ourself: Calling lcr_answer...\n");
2197 /* sometimes SIP phones forget to send RETRIEVE before TRANSFER
2198 so let's do it for them. Hmpf.
2201 if (call1->on_hold) {
2202 union parameter newparam;
2204 memset(&newparam, 0, sizeof(union parameter));
2205 newparam.notifyinfo.notify = INFO_NOTIFY_REMOTE_RETRIEVAL;
2206 send_message(MESSAGE_NOTIFY, call1->ref, &newparam);
2211 if (call2->on_hold) {
2212 union parameter newparam;
2214 memset(&newparam, 0, sizeof(union parameter));
2215 newparam.notifyinfo.notify = INFO_NOTIFY_REMOTE_RETRIEVAL;
2216 send_message(MESSAGE_NOTIFY, call2->ref, &newparam);
2221 ast_mutex_unlock(&chan_lock);
2225 who = ast_waitfor_n(carr, 2, &to);
2228 CDEBUG(NULL, NULL, "Empty read on bridge, breaking out.\n");
2233 if (!f || f->frametype == AST_FRAME_CONTROL) {
2235 CDEBUG(NULL, NULL, "Got hangup.\n");
2237 CDEBUG(NULL, NULL, "Got CONTROL.\n");
2244 if ( f->frametype == AST_FRAME_DTMF ) {
2245 CDEBUG(NULL, NULL, "Got DTMF.\n");
2261 CDEBUG(NULL, NULL, "Releasing bride.\n");
2263 /* split channels */
2264 ast_mutex_lock(&chan_lock);
2265 call1 = ast1->tech_pvt;
2266 call2 = ast2->tech_pvt;
2267 if (call1 && call1->bridge_id)
2269 call1->bridge_id = 0;
2270 if (call1->bchannel)
2271 bchannel_join(call1->bchannel, 0);
2272 if (call1->bridge_call)
2273 call1->bridge_call->bridge_call = NULL;
2275 if (call2 && call1->bridge_id)
2277 call2->bridge_id = 0;
2278 if (call2->bchannel)
2279 bchannel_join(call2->bchannel, 0);
2280 if (call2->bridge_call)
2281 call2->bridge_call->bridge_call = NULL;
2283 call1->bridge_call = NULL;
2284 call2->bridge_call = NULL;
2286 ast_mutex_unlock(&chan_lock);
2287 return AST_BRIDGE_COMPLETE;
2289 static struct ast_channel_tech lcr_tech = {
2291 .description="Channel driver for connecting to Linux-Call-Router",
2292 .requester=lcr_request,
2293 .send_digit_begin=lcr_digit_begin,
2294 .send_digit_end=lcr_digit_end,
2301 .indicate=lcr_indicate,
2303 .send_text=lcr_send_text,
2312 static int lcr_show_lcr (int fd, int argc, char *argv[])
2317 static int lcr_show_calls (int fd, int argc, char *argv[])
2322 static int lcr_reload_routing (int fd, int argc, char *argv[])
2327 static int lcr_reload_interfaces (int fd, int argc, char *argv[])
2332 static int lcr_port_block (int fd, int argc, char *argv[])
2337 static int lcr_port_unblock (int fd, int argc, char *argv[])
2342 static int lcr_port_unload (int fd, int argc, char *argv[])
2347 static struct ast_cli_entry cli_show_lcr =
2348 { {"lcr", "show", "lcr", NULL},
2350 "Shows current states of LCR core",
2351 "Usage: lcr show lcr\n",
2354 static struct ast_cli_entry cli_show_calls =
2355 { {"lcr", "show", "calls", NULL},
2357 "Shows current calls made by LCR and Asterisk",
2358 "Usage: lcr show calls\n",
2361 static struct ast_cli_entry cli_reload_routing =
2362 { {"lcr", "reload", "routing", NULL},
2364 "Reloads routing conf of LCR, current uncomplete calls will be disconnected",
2365 "Usage: lcr reload routing\n",
2368 static struct ast_cli_entry cli_reload_interfaces =
2369 { {"lcr", "reload", "interfaces", NULL},
2370 lcr_reload_interfaces,
2371 "Reloads interfaces conf of LCR",
2372 "Usage: lcr reload interfaces\n",
2375 static struct ast_cli_entry cli_port_block =
2376 { {"lcr", "port", "block", NULL},
2378 "Blocks LCR port for further calls",
2379 "Usage: lcr port block \"<port>\"\n",
2382 static struct ast_cli_entry cli_port_unblock =
2383 { {"lcr", "port", "unblock", NULL},
2385 "Unblocks or loads LCR port, port is opened my mISDN",
2386 "Usage: lcr port unblock \"<port>\"\n",
2389 static struct ast_cli_entry cli_port_unload =
2390 { {"lcr", "port", "unload", NULL},
2392 "Unloads LCR port, port is closes by mISDN",
2393 "Usage: lcr port unload \"<port>\"\n",
2399 static int lcr_config_exec(struct ast_channel *ast, void *data)
2401 struct chan_call *call;
2403 ast_mutex_lock(&chan_lock);
2404 CDEBUG(NULL, ast, "Received lcr_config (data=%s)\n", (char *)data);
2408 if (call->ast == ast)
2413 apply_opt(call, (char *)data);
2415 CERROR(NULL, ast, "lcr_config app not called by chan_lcr channel.\n");
2417 ast_mutex_unlock(&chan_lock);
2422 * module loading and destruction
2424 int load_module(void)
2428 for (i = 0; i < 256; i++) {
2429 flip_bits[i] = (i>>7) | ((i>>5)&2) | ((i>>3)&4) | ((i>>1)&8)
2430 | (i<<7) | ((i&2)<<5) | ((i&4)<<3) | ((i&8)<<1);
2433 if (read_options() == 0) {
2434 CERROR(NULL, NULL, "%s", options_error);
2435 return AST_MODULE_LOAD_DECLINE;
2438 ast_mutex_init(&chan_lock);
2439 ast_mutex_init(&log_lock);
2441 if (open_socket() < 0) {
2442 /* continue with closed socket */
2445 if (bchannel_initialize()) {
2446 CERROR(NULL, NULL, "Unable to open mISDN device\n");
2448 return AST_MODULE_LOAD_DECLINE;
2452 lcr_tech.capabilities = (options.law=='a')?AST_FORMAT_ALAW:AST_FORMAT_ULAW;
2453 if (ast_channel_register(&lcr_tech)) {
2454 CERROR(NULL, NULL, "Unable to register channel class\n");
2455 bchannel_deinitialize();
2457 return AST_MODULE_LOAD_DECLINE;
2460 ast_register_application("lcr_config", lcr_config_exec, "lcr_config",
2461 "lcr_config(<opt><optarg>:<opt>:...)\n"
2462 "Sets LCR opts. and optargs\n"
2464 "The available options are:\n"
2465 " d - Send display text on called phone, text is the optarg.\n"
2466 " n - Don't detect dtmf tones on called channel.\n"
2467 " h - Force data call (HDLC).\n"
2468 " t - Disable mISDN_dsp features (required for fax application).\n"
2469 " c - Make crypted outgoing call, optarg is keyindex.\n"
2470 " e - Perform echo cancelation on this channel.\n"
2471 " Takes mISDN pipeline option as optarg.\n"
2472 // " s - Send Non Inband DTMF as inband.\n"
2473 " vr - rxgain control\n"
2474 " vt - txgain control\n"
2475 " Volume changes at factor 2 ^ optarg.\n"
2480 ast_cli_register(&cli_show_lcr);
2481 ast_cli_register(&cli_show_calls);
2482 ast_cli_register(&cli_reload_routing);
2483 ast_cli_register(&cli_reload_interfaces);
2484 ast_cli_register(&cli_port_block);
2485 ast_cli_register(&cli_port_unblock);
2486 ast_cli_register(&cli_port_unload);
2490 if ((pthread_create(&chan_tid, NULL, chan_thread, NULL)<0))
2492 /* failed to create thread */
2493 bchannel_deinitialize();
2495 ast_channel_unregister(&lcr_tech);
2496 return AST_MODULE_LOAD_DECLINE;
2501 int unload_module(void)
2503 /* First, take us out of the channel loop */
2504 CDEBUG(NULL, NULL, "-- Unregistering mISDN Channel Driver --\n");
2507 pthread_join(chan_tid, NULL);
2509 ast_channel_unregister(&lcr_tech);
2511 ast_unregister_application("lcr_config");
2514 if (mISDN_created) {
2515 bchannel_deinitialize();
2519 if (lcr_sock >= 0) {
2527 int reload_module(void)
2534 #define AST_MODULE "chan_lcr"
2536 AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Channel driver for Linux-Call-Router Support (ISDN BRI/PRI)",
2537 .load = load_module,
2538 .unload = unload_module,
2539 .reload = reload_module,