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Detect if the installed gcc version supports the warn_unused_result attribute.
[asterisk-bristuff.git] / channels / chan_phone.c
blobf2faf1c744fd7e549aadb1e62e5461fdb7bee7af
1 /*
2 * Asterisk -- An open source telephony toolkit.
3 *
4 * Copyright (C) 1999 - 2005, Digium, Inc.
5 *
6 * Mark Spencer <markster@digium.com>
7 *
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.
13 *
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.
17 */
18
19 /*! \file
20 *
21 * \brief Generic Linux Telephony Interface driver
22 *
23 * \author Mark Spencer <markster@digium.com>
24 *
25 * \ingroup channel_drivers
26 */
27
28 /*** MODULEINFO
29 <depend>ixjuser</depend>
30 ***/
31
32 #include "asterisk.h"
33
34 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
35
36 #include <ctype.h>
37 #include <sys/socket.h>
38 #include <sys/time.h>
39 #include <arpa/inet.h>
40 #include <fcntl.h>
41 #include <sys/ioctl.h>
42 #include <signal.h>
43 #ifdef HAVE_LINUX_COMPILER_H
44 #include <linux/compiler.h>
45 #endif
46 #include <linux/telephony.h>
47 /* Still use some IXJ specific stuff */
48 #include <linux/version.h>
49 #include <linux/ixjuser.h>
50
51 #include "asterisk/lock.h"
52 #include "asterisk/channel.h"
53 #include "asterisk/config.h"
54 #include "asterisk/module.h"
55 #include "asterisk/pbx.h"
56 #include "asterisk/utils.h"
57 #include "asterisk/callerid.h"
58 #include "asterisk/causes.h"
59 #include "asterisk/stringfields.h"
60 #include "asterisk/musiconhold.h"
61
62 #include "chan_phone.h"
63
64 #ifdef QTI_PHONEJACK_TJ_PCI /* check for the newer quicknet driver v.3.1.0 which has this symbol */
65 #define QNDRV_VER 310
66 #else
67 #define QNDRV_VER 100
68 #endif
69
70 #if QNDRV_VER > 100
71 #ifdef __linux__
72 #define IXJ_PHONE_RING_START(x) ioctl(p->fd, PHONE_RING_START, &x);
73 #else /* FreeBSD and others */
74 #define IXJ_PHONE_RING_START(x) ioctl(p->fd, PHONE_RING_START, x);
75 #endif /* __linux__ */
76 #else /* older driver */
77 #define IXJ_PHONE_RING_START(x) ioctl(p->fd, PHONE_RING_START, &x);
78 #endif
79
80 #define DEFAULT_CALLER_ID "Unknown"
81 #define PHONE_MAX_BUF 480
82 #define DEFAULT_GAIN 0x100
83
84 static const char tdesc[] = "Standard Linux Telephony API Driver";
85 static const char config[] = "phone.conf";
86
87 /* Default context for dialtone mode */
88 static char context[AST_MAX_EXTENSION] = "default";
89
90 /* Default language */
91 static char language[MAX_LANGUAGE] = "";
92
93 static int echocancel = AEC_OFF;
94
95 static int silencesupression = 0;
96
97 static int prefformat = AST_FORMAT_G729A | AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW;
98
99 /* Protect the interface list (of phone_pvt's) */
100 AST_MUTEX_DEFINE_STATIC(iflock);
101
102 /* Protect the monitoring thread, so only one process can kill or start it, and not
103 when it's doing something critical. */
104 AST_MUTEX_DEFINE_STATIC(monlock);
105
106 /* Boolean value whether the monitoring thread shall continue. */
107 static unsigned int monitor;
108
109 /* This is the thread for the monitor which checks for input on the channels
110 which are not currently in use. */
111 static pthread_t monitor_thread = AST_PTHREADT_NULL;
112
113 static int restart_monitor(void);
114
115 /* The private structures of the Phone Jack channels are linked for
116 selecting outgoing channels */
117
118 #define MODE_DIALTONE 1
119 #define MODE_IMMEDIATE 2
120 #define MODE_FXO 3
121 #define MODE_FXS 4
122 #define MODE_SIGMA 5
123
124 static struct phone_pvt {
125 int fd; /* Raw file descriptor for this device */
126 struct ast_channel *owner; /* Channel we belong to, possibly NULL */
127 int mode; /* Is this in the */
128 int lastformat; /* Last output format */
129 int lastinput; /* Last input format */
130 int ministate; /* Miniature state, for dialtone mode */
131 char dev[256]; /* Device name */
132 struct phone_pvt *next; /* Next channel in list */
133 struct ast_frame fr; /* Frame */
134 char offset[AST_FRIENDLY_OFFSET];
135 char buf[PHONE_MAX_BUF]; /* Static buffer for reading frames */
136 int obuflen;
137 int dialtone;
138 int txgain, rxgain; /* gain control for playing, recording */
139 /* 0x100 - 1.0, 0x200 - 2.0, 0x80 - 0.5 */
140 int cpt; /* Call Progress Tone playing? */
141 int silencesupression;
142 char context[AST_MAX_EXTENSION];
143 char obuf[PHONE_MAX_BUF * 2];
144 char ext[AST_MAX_EXTENSION];
145 char language[MAX_LANGUAGE];
146 char cid_num[AST_MAX_EXTENSION];
147 char cid_name[AST_MAX_EXTENSION];
148 } *iflist = NULL;
149
150 static char cid_num[AST_MAX_EXTENSION];
151 static char cid_name[AST_MAX_EXTENSION];
152
153 static struct ast_channel *phone_request(const char *type, int format, void *data, int *cause);
154 static int phone_digit_begin(struct ast_channel *ast, char digit);
155 static int phone_digit_end(struct ast_channel *ast, char digit, unsigned int duration);
156 static int phone_call(struct ast_channel *ast, char *dest, int timeout);
157 static int phone_hangup(struct ast_channel *ast);
158 static int phone_answer(struct ast_channel *ast);
159 static struct ast_frame *phone_read(struct ast_channel *ast);
160 static int phone_write(struct ast_channel *ast, struct ast_frame *frame);
161 static struct ast_frame *phone_exception(struct ast_channel *ast);
162 static int phone_send_text(struct ast_channel *ast, const char *text);
163 static int phone_fixup(struct ast_channel *old, struct ast_channel *new);
164 static int phone_indicate(struct ast_channel *chan, int condition, const void *data, size_t datalen);
165
166 static const struct ast_channel_tech phone_tech = {
167 .type = "Phone",
168 .description = tdesc,
169 .capabilities = AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW | AST_FORMAT_G729A,
170 .requester = phone_request,
171 .send_digit_begin = phone_digit_begin,
172 .send_digit_end = phone_digit_end,
173 .call = phone_call,
174 .hangup = phone_hangup,
175 .answer = phone_answer,
176 .read = phone_read,
177 .write = phone_write,
178 .exception = phone_exception,
179 .indicate = phone_indicate,
180 .fixup = phone_fixup
181 };
182
183 static struct ast_channel_tech phone_tech_fxs = {
184 .type = "Phone",
185 .description = tdesc,
186 .requester = phone_request,
187 .send_digit_begin = phone_digit_begin,
188 .send_digit_end = phone_digit_end,
189 .call = phone_call,
190 .hangup = phone_hangup,
191 .answer = phone_answer,
192 .read = phone_read,
193 .write = phone_write,
194 .exception = phone_exception,
195 .write_video = phone_write,
196 .send_text = phone_send_text,
197 .indicate = phone_indicate,
198 .fixup = phone_fixup
199 };
200
201 static struct ast_channel_tech *cur_tech;
202
203 static int phone_indicate(struct ast_channel *chan, int condition, const void *data, size_t datalen)
204 {
205 struct phone_pvt *p = chan->tech_pvt;
206 int res=-1;
207 ast_debug(1, "Requested indication %d on channel %s\n", condition, chan->name);
208 switch(condition) {
209 case AST_CONTROL_FLASH:
210 ioctl(p->fd, IXJCTL_PSTN_SET_STATE, PSTN_ON_HOOK);
211 usleep(320000);
212 ioctl(p->fd, IXJCTL_PSTN_SET_STATE, PSTN_OFF_HOOK);
213 p->lastformat = -1;
214 res = 0;
215 break;
216 case AST_CONTROL_HOLD:
217 ast_moh_start(chan, data, NULL);
218 break;
219 case AST_CONTROL_UNHOLD:
220 ast_moh_stop(chan);
221 break;
222 case AST_CONTROL_SRCUPDATE:
223 res = 0;
224 break;
225 default:
226 ast_log(LOG_WARNING, "Condition %d is not supported on channel %s\n", condition, chan->name);
227 }
228 return res;
229 }
230
231 static int phone_fixup(struct ast_channel *old, struct ast_channel *new)
232 {
233 struct phone_pvt *pvt = old->tech_pvt;
234 if (pvt && pvt->owner == old)
235 pvt->owner = new;
236 return 0;
237 }
238
239 static int phone_digit_begin(struct ast_channel *chan, char digit)
240 {
241 /* XXX Modify this callback to let Asterisk support controlling the length of DTMF */
242 return 0;
243 }
244
245 static int phone_digit_end(struct ast_channel *ast, char digit, unsigned int duration)
246 {
247 struct phone_pvt *p;
248 int outdigit;
249 p = ast->tech_pvt;
250 ast_debug(1, "Dialed %c\n", digit);
251 switch(digit) {
252 case '0':
253 case '1':
254 case '2':
255 case '3':
256 case '4':
257 case '5':
258 case '6':
259 case '7':
260 case '8':
261 case '9':
262 outdigit = digit - '0';
263 break;
264 case '*':
265 outdigit = 11;
266 break;
267 case '#':
268 outdigit = 12;
269 break;
270 case 'f': /*flash*/
271 case 'F':
272 ioctl(p->fd, IXJCTL_PSTN_SET_STATE, PSTN_ON_HOOK);
273 usleep(320000);
274 ioctl(p->fd, IXJCTL_PSTN_SET_STATE, PSTN_OFF_HOOK);
275 p->lastformat = -1;
276 return 0;
277 default:
278 ast_log(LOG_WARNING, "Unknown digit '%c'\n", digit);
279 return -1;
280 }
281 ast_debug(1, "Dialed %d\n", outdigit);
282 ioctl(p->fd, PHONE_PLAY_TONE, outdigit);
283 p->lastformat = -1;
284 return 0;
285 }
286
287 static int phone_call(struct ast_channel *ast, char *dest, int timeout)
288 {
289 struct phone_pvt *p;
290
291 PHONE_CID cid;
292 struct timeval UtcTime = ast_tvnow();
293 struct ast_tm tm;
294 int start;
295
296 ast_localtime(&UtcTime, &tm, NULL);
297
298 memset(&cid, 0, sizeof(PHONE_CID));
299 if(&tm != NULL) {
300 snprintf(cid.month, sizeof(cid.month), "%02d",(tm.tm_mon + 1));
301 snprintf(cid.day, sizeof(cid.day), "%02d", tm.tm_mday);
302 snprintf(cid.hour, sizeof(cid.hour), "%02d", tm.tm_hour);
303 snprintf(cid.min, sizeof(cid.min), "%02d", tm.tm_min);
304 }
305 /* the standard format of ast->callerid is: "name" <number>, but not always complete */
306 if (ast_strlen_zero(ast->cid.cid_name))
307 strcpy(cid.name, DEFAULT_CALLER_ID);
308 else
309 ast_copy_string(cid.name, ast->cid.cid_name, sizeof(cid.name));
310
311 if (ast->cid.cid_num)
312 ast_copy_string(cid.number, ast->cid.cid_num, sizeof(cid.number));
313
314 p = ast->tech_pvt;
315
316 if ((ast->_state != AST_STATE_DOWN) && (ast->_state != AST_STATE_RESERVED)) {
317 ast_log(LOG_WARNING, "phone_call called on %s, neither down nor reserved\n", ast->name);
318 return -1;
319 }
320 ast_debug(1, "Ringing %s on %s (%d)\n", dest, ast->name, ast->fds[0]);
321
322 start = IXJ_PHONE_RING_START(cid);
323 if (start == -1)
324 return -1;
325
326 if (p->mode == MODE_FXS) {
327 char *digit = strchr(dest, '/');
328 if (digit)
329 {
330 digit++;
331 while (*digit)
332 phone_digit_end(ast, *digit++, 0);
333 }
334 }
335
336 ast_setstate(ast, AST_STATE_RINGING);
337 ast_queue_control(ast, AST_CONTROL_RINGING);
338 return 0;
339 }
340
341 static int phone_hangup(struct ast_channel *ast)
342 {
343 struct phone_pvt *p;
344 p = ast->tech_pvt;
345 ast_debug(1, "phone_hangup(%s)\n", ast->name);
346 if (!ast->tech_pvt) {
347 ast_log(LOG_WARNING, "Asked to hangup channel not connected\n");
348 return 0;
349 }
350 /* XXX Is there anything we can do to really hang up except stop recording? */
351 ast_setstate(ast, AST_STATE_DOWN);
352 if (ioctl(p->fd, PHONE_REC_STOP))
353 ast_log(LOG_WARNING, "Failed to stop recording\n");
354 if (ioctl(p->fd, PHONE_PLAY_STOP))
355 ast_log(LOG_WARNING, "Failed to stop playing\n");
356 if (ioctl(p->fd, PHONE_RING_STOP))
357 ast_log(LOG_WARNING, "Failed to stop ringing\n");
358 if (ioctl(p->fd, PHONE_CPT_STOP))
359 ast_log(LOG_WARNING, "Failed to stop sounds\n");
360
361 /* If it's an FXO, hang them up */
362 if (p->mode == MODE_FXO) {
363 if (ioctl(p->fd, PHONE_PSTN_SET_STATE, PSTN_ON_HOOK))
364 ast_debug(1, "ioctl(PHONE_PSTN_SET_STATE) failed on %s (%s)\n",ast->name, strerror(errno));
365 }
366
367 /* If they're off hook, give a busy signal */
368 if (ioctl(p->fd, PHONE_HOOKSTATE)) {
369 ast_debug(1, "Got hunghup, giving busy signal\n");
370 ioctl(p->fd, PHONE_BUSY);
371 p->cpt = 1;
372 }
373 p->lastformat = -1;
374 p->lastinput = -1;
375 p->ministate = 0;
376 p->obuflen = 0;
377 p->dialtone = 0;
378 memset(p->ext, 0, sizeof(p->ext));
379 ((struct phone_pvt *)(ast->tech_pvt))->owner = NULL;
380 ast_module_unref(ast_module_info->self);
381 ast_verb(3, "Hungup '%s'\n", ast->name);
382 ast->tech_pvt = NULL;
383 ast_setstate(ast, AST_STATE_DOWN);
384 restart_monitor();
385 return 0;
386 }
387
388 static int phone_setup(struct ast_channel *ast)
389 {
390 struct phone_pvt *p;
391 p = ast->tech_pvt;
392 ioctl(p->fd, PHONE_CPT_STOP);
393 /* Nothing to answering really, just start recording */
394 if (ast->rawreadformat == AST_FORMAT_G729A) {
395 /* Prefer g729 */
396 ioctl(p->fd, PHONE_REC_STOP);
397 if (p->lastinput != AST_FORMAT_G729A) {
398 p->lastinput = AST_FORMAT_G729A;
399 if (ioctl(p->fd, PHONE_REC_CODEC, G729)) {
400 ast_log(LOG_WARNING, "Failed to set codec to g729\n");
401 return -1;
402 }
403 }
404 } else if (ast->rawreadformat == AST_FORMAT_G723_1) {
405 ioctl(p->fd, PHONE_REC_STOP);
406 if (p->lastinput != AST_FORMAT_G723_1) {
407 p->lastinput = AST_FORMAT_G723_1;
408 if (ioctl(p->fd, PHONE_REC_CODEC, G723_63)) {
409 ast_log(LOG_WARNING, "Failed to set codec to g723.1\n");
410 return -1;
411 }
412 }
413 } else if (ast->rawreadformat == AST_FORMAT_SLINEAR) {
414 ioctl(p->fd, PHONE_REC_STOP);
415 if (p->lastinput != AST_FORMAT_SLINEAR) {
416 p->lastinput = AST_FORMAT_SLINEAR;
417 if (ioctl(p->fd, PHONE_REC_CODEC, LINEAR16)) {
418 ast_log(LOG_WARNING, "Failed to set codec to signed linear 16\n");
419 return -1;
420 }
421 }
422 } else if (ast->rawreadformat == AST_FORMAT_ULAW) {
423 ioctl(p->fd, PHONE_REC_STOP);
424 if (p->lastinput != AST_FORMAT_ULAW) {
425 p->lastinput = AST_FORMAT_ULAW;
426 if (ioctl(p->fd, PHONE_REC_CODEC, ULAW)) {
427 ast_log(LOG_WARNING, "Failed to set codec to uLaw\n");
428 return -1;
429 }
430 }
431 } else if (p->mode == MODE_FXS) {
432 ioctl(p->fd, PHONE_REC_STOP);
433 if (p->lastinput != ast->rawreadformat) {
434 p->lastinput = ast->rawreadformat;
435 if (ioctl(p->fd, PHONE_REC_CODEC, ast->rawreadformat)) {
436 ast_log(LOG_WARNING, "Failed to set codec to %d\n",
437 ast->rawreadformat);
438 return -1;
439 }
440 }
441 } else {
442 ast_log(LOG_WARNING, "Can't do format %s\n", ast_getformatname(ast->rawreadformat));
443 return -1;
444 }
445 if (ioctl(p->fd, PHONE_REC_START)) {
446 ast_log(LOG_WARNING, "Failed to start recording\n");
447 return -1;
448 }
449 /* set the DTMF times (the default is too short) */
450 ioctl(p->fd, PHONE_SET_TONE_ON_TIME, 300);
451 ioctl(p->fd, PHONE_SET_TONE_OFF_TIME, 200);
452 return 0;
453 }
454
455 static int phone_answer(struct ast_channel *ast)
456 {
457 struct phone_pvt *p;
458 p = ast->tech_pvt;
459 /* In case it's a LineJack, take it off hook */
460 if (p->mode == MODE_FXO) {
461 if (ioctl(p->fd, PHONE_PSTN_SET_STATE, PSTN_OFF_HOOK))
462 ast_debug(1, "ioctl(PHONE_PSTN_SET_STATE) failed on %s (%s)\n", ast->name, strerror(errno));
463 else
464 ast_debug(1, "Took linejack off hook\n");
465 }
466 phone_setup(ast);
467 ast_debug(1, "phone_answer(%s)\n", ast->name);
468 ast->rings = 0;
469 ast_setstate(ast, AST_STATE_UP);
470 return 0;
471 }
472
473 #if 0
474 static char phone_2digit(char c)
475 {
476 if (c == 12)
477 return '#';
478 else if (c == 11)
479 return '*';
480 else if ((c < 10) && (c >= 0))
481 return '0' + c - 1;
482 else
483 return '?';
484 }
485 #endif
486
487 static struct ast_frame *phone_exception(struct ast_channel *ast)
488 {
489 int res;
490 union telephony_exception phonee;
491 struct phone_pvt *p = ast->tech_pvt;
492 char digit;
493
494 /* Some nice norms */
495 p->fr.datalen = 0;
496 p->fr.samples = 0;
497 p->fr.data.ptr = NULL;
498 p->fr.src = "Phone";
499 p->fr.offset = 0;
500 p->fr.mallocd=0;
501 p->fr.delivery = ast_tv(0,0);
502
503 phonee.bytes = ioctl(p->fd, PHONE_EXCEPTION);
504 if (phonee.bits.dtmf_ready) {
505 ast_debug(1, "phone_exception(): DTMF\n");
506
507 /* We've got a digit -- Just handle this nicely and easily */
508 digit = ioctl(p->fd, PHONE_GET_DTMF_ASCII);
509 p->fr.subclass = digit;
510 p->fr.frametype = AST_FRAME_DTMF;
511 return &p->fr;
512 }
513 if (phonee.bits.hookstate) {
514 ast_debug(1, "Hookstate changed\n");
515 res = ioctl(p->fd, PHONE_HOOKSTATE);
516 /* See if we've gone on hook, if so, notify by returning NULL */
517 ast_debug(1, "New hookstate: %d\n", res);
518 if (!res && (p->mode != MODE_FXO))
519 return NULL;
520 else {
521 if (ast->_state == AST_STATE_RINGING) {
522 /* They've picked up the phone */
523 p->fr.frametype = AST_FRAME_CONTROL;
524 p->fr.subclass = AST_CONTROL_ANSWER;
525 phone_setup(ast);
526 ast_setstate(ast, AST_STATE_UP);
527 return &p->fr;
528 } else
529 ast_log(LOG_WARNING, "Got off hook in weird state %d\n", ast->_state);
530 }
531 }
532 #if 1
533 if (phonee.bits.pstn_ring)
534 ast_verbose("Unit is ringing\n");
535 if (phonee.bits.caller_id) {
536 ast_verbose("We have caller ID\n");
537 }
538 if (phonee.bits.pstn_wink)
539 ast_verbose("Detected Wink\n");
540 #endif
541 /* Strange -- nothing there.. */
542 p->fr.frametype = AST_FRAME_NULL;
543 p->fr.subclass = 0;
544 return &p->fr;
545 }
546
547 static struct ast_frame *phone_read(struct ast_channel *ast)
548 {
549 int res;
550 struct phone_pvt *p = ast->tech_pvt;
551
552
553 /* Some nice norms */
554 p->fr.datalen = 0;
555 p->fr.samples = 0;
556 p->fr.data.ptr = NULL;
557 p->fr.src = "Phone";
558 p->fr.offset = 0;
559 p->fr.mallocd=0;
560 p->fr.delivery = ast_tv(0,0);
561
562 /* Try to read some data... */
563 CHECK_BLOCKING(ast);
564 res = read(p->fd, p->buf, PHONE_MAX_BUF);
565 ast_clear_flag(ast, AST_FLAG_BLOCKING);
566 if (res < 0) {
567 #if 0
568 if (errno == EAGAIN) {
569 ast_log(LOG_WARNING, "Null frame received\n");
570 p->fr.frametype = AST_FRAME_NULL;
571 p->fr.subclass = 0;
572 return &p->fr;
573 }
574 #endif
575 ast_log(LOG_WARNING, "Error reading: %s\n", strerror(errno));
576 return NULL;
577 }
578 p->fr.data.ptr = p->buf;
579 if (p->mode != MODE_FXS)
580 switch(p->buf[0] & 0x3) {
581 case '0':
582 case '1':
583 /* Normal */
584 break;
585 case '2':
586 case '3':
587 /* VAD/CNG, only send two words */
588 res = 4;
589 break;
590 }
591 p->fr.samples = 240;
592 p->fr.datalen = res;
593 p->fr.frametype = p->lastinput <= AST_FORMAT_AUDIO_MASK ?
594 AST_FRAME_VOICE :
595 p->lastinput <= AST_FORMAT_PNG ? AST_FRAME_IMAGE
596 : AST_FRAME_VIDEO;
597 p->fr.subclass = p->lastinput;
598 p->fr.offset = AST_FRIENDLY_OFFSET;
599 /* Byteswap from little-endian to native-endian */
600 if (p->fr.subclass == AST_FORMAT_SLINEAR)
601 ast_frame_byteswap_le(&p->fr);
602 return &p->fr;
603 }
604
605 static int phone_write_buf(struct phone_pvt *p, const char *buf, int len, int frlen, int swap)
606 {
607 int res;
608 /* Store as much of the buffer as we can, then write fixed frames */
609 int space = sizeof(p->obuf) - p->obuflen;
610 /* Make sure we have enough buffer space to store the frame */
611 if (space < len)
612 len = space;
613 if (swap)
614 ast_swapcopy_samples(p->obuf+p->obuflen, buf, len/2);
615 else
616 memcpy(p->obuf + p->obuflen, buf, len);
617 p->obuflen += len;
618 while(p->obuflen > frlen) {
619 res = write(p->fd, p->obuf, frlen);
620 if (res != frlen) {
621 if (res < 1) {
622 /*
623 * Card is in non-blocking mode now and it works well now, but there are
624 * lot of messages like this. So, this message is temporarily disabled.
625 */
626 return 0;
627 } else {
628 ast_log(LOG_WARNING, "Only wrote %d of %d bytes\n", res, frlen);
629 }
630 }
631 p->obuflen -= frlen;
632 /* Move memory if necessary */
633 if (p->obuflen)
634 memmove(p->obuf, p->obuf + frlen, p->obuflen);
635 }
636 return len;
637 }
638
639 static int phone_send_text(struct ast_channel *ast, const char *text)
640 {
641 int length = strlen(text);
642 return phone_write_buf(ast->tech_pvt, text, length, length, 0) ==
643 length ? 0 : -1;
644 }
645
646 static int phone_write(struct ast_channel *ast, struct ast_frame *frame)
647 {
648 struct phone_pvt *p = ast->tech_pvt;
649 int res;
650 int maxfr=0;
651 char *pos;
652 int sofar;
653 int expected;
654 int codecset = 0;
655 char tmpbuf[4];
656 /* Write a frame of (presumably voice) data */
657 if (frame->frametype != AST_FRAME_VOICE && p->mode != MODE_FXS) {
658 if (frame->frametype != AST_FRAME_IMAGE)
659 ast_log(LOG_WARNING, "Don't know what to do with frame type '%d'\n", frame->frametype);
660 return 0;
661 }
662 if (!(frame->subclass &
663 (AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW | AST_FORMAT_G729A)) &&
664 p->mode != MODE_FXS) {
665 ast_log(LOG_WARNING, "Cannot handle frames in %d format\n", frame->subclass);
666 return -1;
667 }
668 #if 0
669 /* If we're not in up mode, go into up mode now */
670 if (ast->_state != AST_STATE_UP) {
671 ast_setstate(ast, AST_STATE_UP);
672 phone_setup(ast);
673 }
674 #else
675 if (ast->_state != AST_STATE_UP) {
676 /* Don't try tos end audio on-hook */
677 return 0;
678 }
679 #endif
680 if (frame->subclass == AST_FORMAT_G729A) {
681 if (p->lastformat != AST_FORMAT_G729A) {
682 ioctl(p->fd, PHONE_PLAY_STOP);
683 ioctl(p->fd, PHONE_REC_STOP);
684 if (ioctl(p->fd, PHONE_PLAY_CODEC, G729)) {
685 ast_log(LOG_WARNING, "Unable to set G729 mode\n");
686 return -1;
687 }
688 if (ioctl(p->fd, PHONE_REC_CODEC, G729)) {
689 ast_log(LOG_WARNING, "Unable to set G729 mode\n");
690 return -1;
691 }
692 p->lastformat = AST_FORMAT_G729A;
693 p->lastinput = AST_FORMAT_G729A;
694 /* Reset output buffer */
695 p->obuflen = 0;
696 codecset = 1;
697 }
698 if (frame->datalen > 80) {
699 ast_log(LOG_WARNING, "Frame size too large for G.729 (%d bytes)\n", frame->datalen);
700 return -1;
701 }
702 maxfr = 80;
703 } else if (frame->subclass == AST_FORMAT_G723_1) {
704 if (p->lastformat != AST_FORMAT_G723_1) {
705 ioctl(p->fd, PHONE_PLAY_STOP);
706 ioctl(p->fd, PHONE_REC_STOP);
707 if (ioctl(p->fd, PHONE_PLAY_CODEC, G723_63)) {
708 ast_log(LOG_WARNING, "Unable to set G723.1 mode\n");
709 return -1;
710 }
711 if (ioctl(p->fd, PHONE_REC_CODEC, G723_63)) {
712 ast_log(LOG_WARNING, "Unable to set G723.1 mode\n");
713 return -1;
714 }
715 p->lastformat = AST_FORMAT_G723_1;
716 p->lastinput = AST_FORMAT_G723_1;
717 /* Reset output buffer */
718 p->obuflen = 0;
719 codecset = 1;
720 }
721 if (frame->datalen > 24) {
722 ast_log(LOG_WARNING, "Frame size too large for G.723.1 (%d bytes)\n", frame->datalen);
723 return -1;
724 }
725 maxfr = 24;
726 } else if (frame->subclass == AST_FORMAT_SLINEAR) {
727 if (p->lastformat != AST_FORMAT_SLINEAR) {
728 ioctl(p->fd, PHONE_PLAY_STOP);
729 ioctl(p->fd, PHONE_REC_STOP);
730 if (ioctl(p->fd, PHONE_PLAY_CODEC, LINEAR16)) {
731 ast_log(LOG_WARNING, "Unable to set 16-bit linear mode\n");
732 return -1;
733 }
734 if (ioctl(p->fd, PHONE_REC_CODEC, LINEAR16)) {
735 ast_log(LOG_WARNING, "Unable to set 16-bit linear mode\n");
736 return -1;
737 }
738 p->lastformat = AST_FORMAT_SLINEAR;
739 p->lastinput = AST_FORMAT_SLINEAR;
740 codecset = 1;
741 /* Reset output buffer */
742 p->obuflen = 0;
743 }
744 maxfr = 480;
745 } else if (frame->subclass == AST_FORMAT_ULAW) {
746 if (p->lastformat != AST_FORMAT_ULAW) {
747 ioctl(p->fd, PHONE_PLAY_STOP);
748 ioctl(p->fd, PHONE_REC_STOP);
749 if (ioctl(p->fd, PHONE_PLAY_CODEC, ULAW)) {
750 ast_log(LOG_WARNING, "Unable to set uLaw mode\n");
751 return -1;
752 }
753 if (ioctl(p->fd, PHONE_REC_CODEC, ULAW)) {
754 ast_log(LOG_WARNING, "Unable to set uLaw mode\n");
755 return -1;
756 }
757 p->lastformat = AST_FORMAT_ULAW;
758 p->lastinput = AST_FORMAT_ULAW;
759 codecset = 1;
760 /* Reset output buffer */
761 p->obuflen = 0;
762 }
763 maxfr = 240;
764 } else {
765 if (p->lastformat != frame->subclass) {
766 ioctl(p->fd, PHONE_PLAY_STOP);
767 ioctl(p->fd, PHONE_REC_STOP);
768 if (ioctl(p->fd, PHONE_PLAY_CODEC, frame->subclass)) {
769 ast_log(LOG_WARNING, "Unable to set %d mode\n",
770 frame->subclass);
771 return -1;
772 }
773 if (ioctl(p->fd, PHONE_REC_CODEC, frame->subclass)) {
774 ast_log(LOG_WARNING, "Unable to set %d mode\n",
775 frame->subclass);
776 return -1;
777 }
778 p->lastformat = frame->subclass;
779 p->lastinput = frame->subclass;
780 codecset = 1;
781 /* Reset output buffer */
782 p->obuflen = 0;
783 }
784 maxfr = 480;
785 }
786 if (codecset) {
787 ioctl(p->fd, PHONE_REC_DEPTH, 3);
788 ioctl(p->fd, PHONE_PLAY_DEPTH, 3);
789 if (ioctl(p->fd, PHONE_PLAY_START)) {
790 ast_log(LOG_WARNING, "Failed to start playback\n");
791 return -1;
792 }
793 if (ioctl(p->fd, PHONE_REC_START)) {
794 ast_log(LOG_WARNING, "Failed to start recording\n");
795 return -1;
796 }
797 }
798 /* If we get here, we have a frame of Appropriate data */
799 sofar = 0;
800 pos = frame->data.ptr;
801 while(sofar < frame->datalen) {
802 /* Write in no more than maxfr sized frames */
803 expected = frame->datalen - sofar;
804 if (maxfr < expected)
805 expected = maxfr;
806 /* XXX Internet Phone Jack does not handle the 4-byte VAD frame properly! XXX
807 we have to pad it to 24 bytes still. */
808 if (frame->datalen == 4) {
809 if (p->silencesupression) {
810 memset(tmpbuf + 4, 0, sizeof(tmpbuf) - 4);
811 memcpy(tmpbuf, frame->data.ptr, 4);
812 expected = 24;
813 res = phone_write_buf(p, tmpbuf, expected, maxfr, 0);
814 }
815 res = 4;
816 expected=4;
817 } else {
818 int swap = 0;
819 #if __BYTE_ORDER == __BIG_ENDIAN
820 if (frame->subclass == AST_FORMAT_SLINEAR)
821 swap = 1; /* Swap big-endian samples to little-endian as we copy */
822 #endif
823 res = phone_write_buf(p, pos, expected, maxfr, swap);
824 }
825 if (res != expected) {
826 if ((errno != EAGAIN) && (errno != EINTR)) {
827 if (res < 0)
828 ast_log(LOG_WARNING, "Write returned error (%s)\n", strerror(errno));
829 /*
830 * Card is in non-blocking mode now and it works well now, but there are
831 * lot of messages like this. So, this message is temporarily disabled.
832 */
833 #if 0
834 else
835 ast_log(LOG_WARNING, "Only wrote %d of %d bytes\n", res, frame->datalen);
836 #endif
837 return -1;
838 } else /* Pretend it worked */
839 res = expected;
840 }
841 sofar += res;
842 pos += res;
843 }
844 return 0;
845 }
846
847 static struct ast_channel *phone_new(struct phone_pvt *i, int state, char *context)
848 {
849 struct ast_channel *tmp;
850 struct phone_codec_data codec;
851 tmp = ast_channel_alloc(1, state, i->cid_num, i->cid_name, "", i->ext, i->context, 0, "Phone/%s", i->dev + 5);
852 if (tmp) {
853 tmp->tech = cur_tech;
854 ast_channel_set_fd(tmp, 0, i->fd);
855 /* XXX Switching formats silently causes kernel panics XXX */
856 if (i->mode == MODE_FXS &&
857 ioctl(i->fd, PHONE_QUERY_CODEC, &codec) == 0) {
858 if (codec.type == LINEAR16)
859 tmp->nativeformats =
860 tmp->rawreadformat =
861 tmp->rawwriteformat =
862 AST_FORMAT_SLINEAR;
863 else {
864 tmp->nativeformats =
865 tmp->rawreadformat =
866 tmp->rawwriteformat =
867 prefformat & ~AST_FORMAT_SLINEAR;
868 }
869 }
870 else {
871 tmp->nativeformats = prefformat;
872 tmp->rawreadformat = prefformat;
873 tmp->rawwriteformat = prefformat;
874 }
875 /* no need to call ast_setstate: the channel_alloc already did its job */
876 if (state == AST_STATE_RING)
877 tmp->rings = 1;
878 tmp->tech_pvt = i;
879 ast_copy_string(tmp->context, context, sizeof(tmp->context));
880 if (!ast_strlen_zero(i->ext))
881 ast_copy_string(tmp->exten, i->ext, sizeof(tmp->exten));
882 else
883 strcpy(tmp->exten, "s");
884 if (!ast_strlen_zero(i->language))
885 ast_string_field_set(tmp, language, i->language);
886
887 /* Don't use ast_set_callerid() here because it will
888 * generate a NewCallerID event before the NewChannel event */
889 tmp->cid.cid_ani = ast_strdup(i->cid_num);
890
891 i->owner = tmp;
892 ast_module_ref(ast_module_info->self);
893 if (state != AST_STATE_DOWN) {
894 if (state == AST_STATE_RING) {
895 ioctl(tmp->fds[0], PHONE_RINGBACK);
896 i->cpt = 1;
897 }
898 if (ast_pbx_start(tmp)) {
899 ast_log(LOG_WARNING, "Unable to start PBX on %s\n", tmp->name);
900 ast_hangup(tmp);
901 }
902 }
903 } else
904 ast_log(LOG_WARNING, "Unable to allocate channel structure\n");
905 return tmp;
906 }
907
908 static void phone_mini_packet(struct phone_pvt *i)
909 {
910 int res;
911 char buf[1024];
912 /* Ignore stuff we read... */
913 res = read(i->fd, buf, sizeof(buf));
914 if (res < 1) {
915 ast_log(LOG_WARNING, "Read returned %d: %s\n", res, strerror(errno));
916 return;
917 }
918 }
919
920 static void phone_check_exception(struct phone_pvt *i)
921 {
922 int offhook=0;
923 char digit[2] = {0 , 0};
924 union telephony_exception phonee;
925 /* XXX Do something XXX */
926 #if 0
927 ast_debug(1, "Exception!\n");
928 #endif
929 phonee.bytes = ioctl(i->fd, PHONE_EXCEPTION);
930 if (phonee.bits.dtmf_ready) {
931 digit[0] = ioctl(i->fd, PHONE_GET_DTMF_ASCII);
932 if (i->mode == MODE_DIALTONE || i->mode == MODE_FXS || i->mode == MODE_SIGMA) {
933 ioctl(i->fd, PHONE_PLAY_STOP);
934 ioctl(i->fd, PHONE_REC_STOP);
935 ioctl(i->fd, PHONE_CPT_STOP);
936 i->dialtone = 0;
937 if (strlen(i->ext) < AST_MAX_EXTENSION - 1)
938 strncat(i->ext, digit, sizeof(i->ext) - strlen(i->ext) - 1);
939 if ((i->mode != MODE_FXS ||
940 !(phonee.bytes = ioctl(i->fd, PHONE_EXCEPTION)) ||
941 !phonee.bits.dtmf_ready) &&
942 ast_exists_extension(NULL, i->context, i->ext, 1, i->cid_num)) {
943 /* It's a valid extension in its context, get moving! */
944 phone_new(i, AST_STATE_RING, i->context);
945 /* No need to restart monitor, we are the monitor */
946 } else if (!ast_canmatch_extension(NULL, i->context, i->ext, 1, i->cid_num)) {
947 /* There is nothing in the specified extension that can match anymore.
948 Try the default */
949 if (ast_exists_extension(NULL, "default", i->ext, 1, i->cid_num)) {
950 /* Check the default, too... */
951 phone_new(i, AST_STATE_RING, "default");
952 /* XXX This should probably be justified better XXX */
953 } else if (!ast_canmatch_extension(NULL, "default", i->ext, 1, i->cid_num)) {
954 /* It's not a valid extension, give a busy signal */
955 ast_debug(1, "%s can't match anything in %s or default\n", i->ext, i->context);
956 ioctl(i->fd, PHONE_BUSY);
957 i->cpt = 1;
958 }
959 }
960 #if 0
961 ast_verbose("Extension is %s\n", i->ext);
962 #endif
963 }
964 }
965 if (phonee.bits.hookstate) {
966 offhook = ioctl(i->fd, PHONE_HOOKSTATE);
967 if (offhook) {
968 if (i->mode == MODE_IMMEDIATE) {
969 phone_new(i, AST_STATE_RING, i->context);
970 } else if (i->mode == MODE_DIALTONE) {
971 ast_module_ref(ast_module_info->self);
972 /* Reset the extension */
973 i->ext[0] = '\0';
974 /* Play the dialtone */
975 i->dialtone++;
976 ioctl(i->fd, PHONE_PLAY_STOP);
977 ioctl(i->fd, PHONE_PLAY_CODEC, ULAW);
978 ioctl(i->fd, PHONE_PLAY_START);
979 i->lastformat = -1;
980 } else if (i->mode == MODE_SIGMA) {
981 ast_module_ref(ast_module_info->self);
982 /* Reset the extension */
983 i->ext[0] = '\0';
984 /* Play the dialtone */
985 i->dialtone++;
986 ioctl(i->fd, PHONE_DIALTONE);
987 }
988 } else {
989 if (i->dialtone)
990 ast_module_unref(ast_module_info->self);
991 memset(i->ext, 0, sizeof(i->ext));
992 if (i->cpt)
993 {
994 ioctl(i->fd, PHONE_CPT_STOP);
995 i->cpt = 0;
996 }
997 ioctl(i->fd, PHONE_PLAY_STOP);
998 ioctl(i->fd, PHONE_REC_STOP);
999 i->dialtone = 0;
1000 i->lastformat = -1;
1001 }
1002 }
1003 if (phonee.bits.pstn_ring) {
1004 ast_verbose("Unit is ringing\n");
1005 phone_new(i, AST_STATE_RING, i->context);
1006 }
1007 if (phonee.bits.caller_id)
1008 ast_verbose("We have caller ID\n");
1009
1010
1011 }
1012
1013 static void *do_monitor(void *data)
1014 {
1015 fd_set rfds, efds;
1016 int n, res;
1017 struct phone_pvt *i;
1018 int tonepos = 0;
1019 /* The tone we're playing this round */
1020 struct timeval tv = {0,0};
1021 int dotone;
1022 /* This thread monitors all the frame relay interfaces which are not yet in use
1023 (and thus do not have a separate thread) indefinitely */
1024 while (monitor) {
1025 /* Don't let anybody kill us right away. Nobody should lock the interface list
1026 and wait for the monitor list, but the other way around is okay. */
1027 /* Lock the interface list */
1028 if (ast_mutex_lock(&iflock)) {
1029 ast_log(LOG_ERROR, "Unable to grab interface lock\n");
1030 return NULL;
1031 }
1032 /* Build the stuff we're going to select on, that is the socket of every
1033 phone_pvt that does not have an associated owner channel */
1034 n = -1;
1035 FD_ZERO(&rfds);
1036 FD_ZERO(&efds);
1037 i = iflist;
1038 dotone = 0;
1039 while (i) {
1040 if (FD_ISSET(i->fd, &rfds))
1041 ast_log(LOG_WARNING, "Descriptor %d appears twice (%s)?\n", i->fd, i->dev);
1042 if (!i->owner) {
1043 /* This needs to be watched, as it lacks an owner */
1044 FD_SET(i->fd, &rfds);
1045 FD_SET(i->fd, &efds);
1046 if (i->fd > n)
1047 n = i->fd;
1048 if (i->dialtone && i->mode != MODE_SIGMA) {
1049 /* Remember we're going to have to come back and play
1050 more dialtones */
1051 if (ast_tvzero(tv)) {
1052 /* If we're due for a dialtone, play one */
1053 if (write(i->fd, DialTone + tonepos, 240) != 240)
1054 ast_log(LOG_WARNING, "Dial tone write error\n");
1055 }
1056 dotone++;
1057 }
1058 }
1059
1060 i = i->next;
1061 }
1062 /* Okay, now that we know what to do, release the interface lock */
1063 ast_mutex_unlock(&iflock);
1064
1065 /* Wait indefinitely for something to happen */
1066 if (dotone && i && i->mode != MODE_SIGMA) {
1067 /* If we're ready to recycle the time, set it to 30 ms */
1068 tonepos += 240;
1069 if (tonepos >= sizeof(DialTone))
1070 tonepos = 0;
1071 if (ast_tvzero(tv)) {
1072 tv = ast_tv(30000, 0);
1073 }
1074 res = ast_select(n + 1, &rfds, NULL, &efds, &tv);
1075 } else {
1076 res = ast_select(n + 1, &rfds, NULL, &efds, NULL);
1077 tv = ast_tv(0,0);
1078 tonepos = 0;
1079 }
1080 /* Okay, select has finished. Let's see what happened. */
1081 if (res < 0) {
1082 ast_debug(1, "select return %d: %s\n", res, strerror(errno));
1083 continue;
1084 }
1085 /* If there are no fd's changed, just continue, it's probably time
1086 to play some more dialtones */
1087 if (!res)
1088 continue;
1089 /* Alright, lock the interface list again, and let's look and see what has
1090 happened */
1091 if (ast_mutex_lock(&iflock)) {
1092 ast_log(LOG_WARNING, "Unable to lock the interface list\n");
1093 continue;
1094 }
1095
1096 i = iflist;
1097 for(; i; i=i->next) {
1098 if (FD_ISSET(i->fd, &rfds)) {
1099 if (i->owner) {
1100 continue;
1101 }
1102 phone_mini_packet(i);
1103 }
1104 if (FD_ISSET(i->fd, &efds)) {
1105 if (i->owner) {
1106 continue;
1107 }
1108 phone_check_exception(i);
1109 }
1110 }
1111 ast_mutex_unlock(&iflock);
1112 }
1113 return NULL;
1114
1115 }
1116
1117 static int restart_monitor()
1118 {
1119 /* If we're supposed to be stopped -- stay stopped */
1120 if (monitor_thread == AST_PTHREADT_STOP)
1121 return 0;
1122 if (ast_mutex_lock(&monlock)) {
1123 ast_log(LOG_WARNING, "Unable to lock monitor\n");
1124 return -1;
1125 }
1126 if (monitor_thread == pthread_self()) {
1127 ast_mutex_unlock(&monlock);
1128 ast_log(LOG_WARNING, "Cannot kill myself\n");
1129 return -1;
1130 }
1131 if (monitor_thread != AST_PTHREADT_NULL) {
1132 if (ast_mutex_lock(&iflock)) {
1133 ast_mutex_unlock(&monlock);
1134 ast_log(LOG_WARNING, "Unable to lock the interface list\n");
1135 return -1;
1136 }
1137 monitor = 0;
1138 while (pthread_kill(monitor_thread, SIGURG) == 0)
1139 sched_yield();
1140 pthread_join(monitor_thread, NULL);
1141 ast_mutex_unlock(&iflock);
1142 }
1143 monitor = 1;
1144 /* Start a new monitor */
1145 if (ast_pthread_create_background(&monitor_thread, NULL, do_monitor, NULL) < 0) {
1146 ast_mutex_unlock(&monlock);
1147 ast_log(LOG_ERROR, "Unable to start monitor thread.\n");
1148 return -1;
1149 }
1150 ast_mutex_unlock(&monlock);
1151 return 0;
1152 }
1153
1154 static struct phone_pvt *mkif(const char *iface, int mode, int txgain, int rxgain)
1155 {
1156 /* Make a phone_pvt structure for this interface */
1157 struct phone_pvt *tmp;
1158 int flags;
1159
1160 tmp = ast_calloc(1, sizeof(*tmp));
1161 if (tmp) {
1162 tmp->fd = open(iface, O_RDWR);
1163 if (tmp->fd < 0) {
1164 ast_log(LOG_WARNING, "Unable to open '%s'\n", iface);
1165 ast_free(tmp);
1166 return NULL;
1167 }
1168 if (mode == MODE_FXO) {
1169 if (ioctl(tmp->fd, IXJCTL_PORT, PORT_PSTN)) {
1170 ast_debug(1, "Unable to set port to PSTN\n");
1171 }
1172 } else {
1173 if (ioctl(tmp->fd, IXJCTL_PORT, PORT_POTS))
1174 if (mode != MODE_FXS)
1175 ast_debug(1, "Unable to set port to POTS\n");
1176 }
1177 ioctl(tmp->fd, PHONE_PLAY_STOP);
1178 ioctl(tmp->fd, PHONE_REC_STOP);
1179 ioctl(tmp->fd, PHONE_RING_STOP);
1180 ioctl(tmp->fd, PHONE_CPT_STOP);
1181 if (ioctl(tmp->fd, PHONE_PSTN_SET_STATE, PSTN_ON_HOOK))
1182 ast_debug(1, "ioctl(PHONE_PSTN_SET_STATE) failed on %s (%s)\n",iface, strerror(errno));
1183 if (echocancel != AEC_OFF)
1184 ioctl(tmp->fd, IXJCTL_AEC_START, echocancel);
1185 if (silencesupression)
1186 tmp->silencesupression = 1;
1187 #ifdef PHONE_VAD
1188 ioctl(tmp->fd, PHONE_VAD, tmp->silencesupression);
1189 #endif
1190 tmp->mode = mode;
1191 flags = fcntl(tmp->fd, F_GETFL);
1192 fcntl(tmp->fd, F_SETFL, flags | O_NONBLOCK);
1193 tmp->owner = NULL;
1194 tmp->lastformat = -1;
1195 tmp->lastinput = -1;
1196 tmp->ministate = 0;
1197 memset(tmp->ext, 0, sizeof(tmp->ext));
1198 ast_copy_string(tmp->language, language, sizeof(tmp->language));
1199 ast_copy_string(tmp->dev, iface, sizeof(tmp->dev));
1200 ast_copy_string(tmp->context, context, sizeof(tmp->context));
1201 tmp->next = NULL;
1202 tmp->obuflen = 0;
1203 tmp->dialtone = 0;
1204 tmp->cpt = 0;
1205 ast_copy_string(tmp->cid_num, cid_num, sizeof(tmp->cid_num));
1206 ast_copy_string(tmp->cid_name, cid_name, sizeof(tmp->cid_name));
1207 tmp->txgain = txgain;
1208 ioctl(tmp->fd, PHONE_PLAY_VOLUME, tmp->txgain);
1209 tmp->rxgain = rxgain;
1210 ioctl(tmp->fd, PHONE_REC_VOLUME, tmp->rxgain);
1211 }
1212 return tmp;
1213 }
1214
1215 static struct ast_channel *phone_request(const char *type, int format, void *data, int *cause)
1216 {
1217 int oldformat;
1218 struct phone_pvt *p;
1219 struct ast_channel *tmp = NULL;
1220 char *name = data;
1221
1222 /* Search for an unowned channel */
1223 if (ast_mutex_lock(&iflock)) {
1224 ast_log(LOG_ERROR, "Unable to lock interface list???\n");
1225 return NULL;
1226 }
1227 p = iflist;
1228 while(p) {
1229 if (p->mode == MODE_FXS ||
1230 format & (AST_FORMAT_G729A | AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW)) {
1231 size_t length = strlen(p->dev + 5);
1232 if (strncmp(name, p->dev + 5, length) == 0 &&
1233 !isalnum(name[length])) {
1234 if (!p->owner) {
1235 tmp = phone_new(p, AST_STATE_DOWN, p->context);
1236 break;
1237 } else
1238 *cause = AST_CAUSE_BUSY;
1239 }
1240 }
1241 p = p->next;
1242 }
1243 ast_mutex_unlock(&iflock);
1244 restart_monitor();
1245 if (tmp == NULL) {
1246 oldformat = format;
1247 format &= (AST_FORMAT_G729A | AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW);
1248 if (!format) {
1249 ast_log(LOG_NOTICE, "Asked to get a channel of unsupported format '%d'\n", oldformat);
1250 return NULL;
1251 }
1252 }
1253 return tmp;
1254 }
1255
1256 /* parse gain value from config file */
1257 static int parse_gain_value(const char *gain_type, const char *value)
1258 {
1259 float gain;
1260
1261 /* try to scan number */
1262 if (sscanf(value, "%f", &gain) != 1)
1263 {
1264 ast_log(LOG_ERROR, "Invalid %s value '%s' in '%s' config\n",
1265 value, gain_type, config);
1266 return DEFAULT_GAIN;
1267 }
1268
1269 /* multiplicate gain by 1.0 gain value */
1270 gain = gain * (float)DEFAULT_GAIN;
1271
1272 /* percentage? */
1273 if (value[strlen(value) - 1] == '%')
1274 return (int)(gain / (float)100);
1275
1276 return (int)gain;
1277 }
1278
1279 static int __unload_module(void)
1280 {
1281 struct phone_pvt *p, *pl;
1282 /* First, take us out of the channel loop */
1283 if (cur_tech)
1284 ast_channel_unregister(cur_tech);
1285 if (!ast_mutex_lock(&iflock)) {
1286 /* Hangup all interfaces if they have an owner */
1287 p = iflist;
1288 while(p) {
1289 if (p->owner)
1290 ast_softhangup(p->owner, AST_SOFTHANGUP_APPUNLOAD);
1291 p = p->next;
1292 }
1293 iflist = NULL;
1294 ast_mutex_unlock(&iflock);
1295 } else {
1296 ast_log(LOG_WARNING, "Unable to lock the monitor\n");
1297 return -1;
1298 }
1299 if (!ast_mutex_lock(&monlock)) {
1300 if (monitor_thread > AST_PTHREADT_NULL) {
1301 monitor = 0;
1302 while (pthread_kill(monitor_thread, SIGURG) == 0)
1303 sched_yield();
1304 pthread_join(monitor_thread, NULL);
1305 }
1306 monitor_thread = AST_PTHREADT_STOP;
1307 ast_mutex_unlock(&monlock);
1308 } else {
1309 ast_log(LOG_WARNING, "Unable to lock the monitor\n");
1310 return -1;
1311 }
1312
1313 if (!ast_mutex_lock(&iflock)) {
1314 /* Destroy all the interfaces and free their memory */
1315 p = iflist;
1316 while(p) {
1317 /* Close the socket, assuming it's real */
1318 if (p->fd > -1)
1319 close(p->fd);
1320 pl = p;
1321 p = p->next;
1322 /* Free associated memory */
1323 ast_free(pl);
1324 }
1325 iflist = NULL;
1326 ast_mutex_unlock(&iflock);
1327 } else {
1328 ast_log(LOG_WARNING, "Unable to lock the monitor\n");
1329 return -1;
1330 }
1331
1332 return 0;
1333 }
1334
1335 static int unload_module(void)
1336 {
1337 return __unload_module();
1338 }
1339
1340 static int load_module(void)
1341 {
1342 struct ast_config *cfg;
1343 struct ast_variable *v;
1344 struct phone_pvt *tmp;
1345 int mode = MODE_IMMEDIATE;
1346 int txgain = DEFAULT_GAIN, rxgain = DEFAULT_GAIN; /* default gain 1.0 */
1347 struct ast_flags config_flags = { 0 };
1348
1349 cfg = ast_config_load(config, config_flags);
1350
1351 /* We *must* have a config file otherwise stop immediately */
1352 if (!cfg) {
1353 ast_log(LOG_ERROR, "Unable to load config %s\n", config);
1354 return AST_MODULE_LOAD_DECLINE;
1355 }
1356 if (ast_mutex_lock(&iflock)) {
1357 /* It's a little silly to lock it, but we mind as well just to be sure */
1358 ast_log(LOG_ERROR, "Unable to lock interface list???\n");
1359 return AST_MODULE_LOAD_FAILURE;
1360 }
1361 v = ast_variable_browse(cfg, "interfaces");
1362 while(v) {
1363 /* Create the interface list */
1364 if (!strcasecmp(v->name, "device")) {
1365 tmp = mkif(v->value, mode, txgain, rxgain);
1366 if (tmp) {
1367 tmp->next = iflist;
1368 iflist = tmp;
1369
1370 } else {
1371 ast_log(LOG_ERROR, "Unable to register channel '%s'\n", v->value);
1372 ast_config_destroy(cfg);
1373 ast_mutex_unlock(&iflock);
1374 __unload_module();
1375 return AST_MODULE_LOAD_FAILURE;
1376 }
1377 } else if (!strcasecmp(v->name, "silencesupression")) {
1378 silencesupression = ast_true(v->value);
1379 } else if (!strcasecmp(v->name, "language")) {
1380 ast_copy_string(language, v->value, sizeof(language));
1381 } else if (!strcasecmp(v->name, "callerid")) {
1382 ast_callerid_split(v->value, cid_name, sizeof(cid_name), cid_num, sizeof(cid_num));
1383 } else if (!strcasecmp(v->name, "mode")) {
1384 if (!strncasecmp(v->value, "di", 2))
1385 mode = MODE_DIALTONE;
1386 else if (!strncasecmp(v->value, "sig", 3))
1387 mode = MODE_SIGMA;
1388 else if (!strncasecmp(v->value, "im", 2))
1389 mode = MODE_IMMEDIATE;
1390 else if (!strncasecmp(v->value, "fxs", 3)) {
1391 mode = MODE_FXS;
1392 prefformat = 0x01ff0000; /* All non-voice */
1393 }
1394 else if (!strncasecmp(v->value, "fx", 2))
1395 mode = MODE_FXO;
1396 else
1397 ast_log(LOG_WARNING, "Unknown mode: %s\n", v->value);
1398 } else if (!strcasecmp(v->name, "context")) {
1399 ast_copy_string(context, v->value, sizeof(context));
1400 } else if (!strcasecmp(v->name, "format")) {
1401 if (!strcasecmp(v->value, "g729")) {
1402 prefformat = AST_FORMAT_G729A;
1403 } else if (!strcasecmp(v->value, "g723.1")) {
1404 prefformat = AST_FORMAT_G723_1;
1405 } else if (!strcasecmp(v->value, "slinear")) {
1406 if (mode == MODE_FXS)
1407 prefformat |= AST_FORMAT_SLINEAR;
1408 else prefformat = AST_FORMAT_SLINEAR;
1409 } else if (!strcasecmp(v->value, "ulaw")) {
1410 prefformat = AST_FORMAT_ULAW;
1411 } else
1412 ast_log(LOG_WARNING, "Unknown format '%s'\n", v->value);
1413 } else if (!strcasecmp(v->name, "echocancel")) {
1414 if (!strcasecmp(v->value, "off")) {
1415 echocancel = AEC_OFF;
1416 } else if (!strcasecmp(v->value, "low")) {
1417 echocancel = AEC_LOW;
1418 } else if (!strcasecmp(v->value, "medium")) {
1419 echocancel = AEC_MED;
1420 } else if (!strcasecmp(v->value, "high")) {
1421 echocancel = AEC_HIGH;
1422 } else
1423 ast_log(LOG_WARNING, "Unknown echo cancellation '%s'\n", v->value);
1424 } else if (!strcasecmp(v->name, "txgain")) {
1425 txgain = parse_gain_value(v->name, v->value);
1426 } else if (!strcasecmp(v->name, "rxgain")) {
1427 rxgain = parse_gain_value(v->name, v->value);
1428 }
1429 v = v->next;
1430 }
1431 ast_mutex_unlock(&iflock);
1432
1433 if (mode == MODE_FXS) {
1434 phone_tech_fxs.capabilities = prefformat;
1435 cur_tech = &phone_tech_fxs;
1436 } else
1437 cur_tech = (struct ast_channel_tech *) &phone_tech;
1438
1439 /* Make sure we can register our Adtranphone channel type */
1440
1441 if (ast_channel_register(cur_tech)) {
1442 ast_log(LOG_ERROR, "Unable to register channel class 'Phone'\n");
1443 ast_config_destroy(cfg);
1444 __unload_module();
1445 return AST_MODULE_LOAD_FAILURE;
1446 }
1447 ast_config_destroy(cfg);
1448 /* And start the monitor for the first time */
1449 restart_monitor();
1450 return AST_MODULE_LOAD_SUCCESS;
1451 }
1452
1453 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Linux Telephony API Support");
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