aboutsummaryrefslogtreecommitdiffstats
path: root/app.c
blob: 86ad5077cabeef47815961ca0712956e48370a75 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
/*
 * Asterisk -- A telephony toolkit for Linux.
 *
 * Channel Management
 * 
 * Copyright (C) 1999, Mark Spencer
 *
 * Mark Spencer <markster@linux-support.net>
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <signal.h>
#include <errno.h>
#include <unistd.h>
#include <dirent.h>
#include <asterisk/channel.h>
#include <asterisk/pbx.h>
#include <asterisk/file.h>
#include <asterisk/app.h>
#include <asterisk/dsp.h>
#include <asterisk/logger.h>
#include <asterisk/options.h>
#include <asterisk/utils.h>
#include <asterisk/lock.h>
#include "asterisk.h"
#include "astconf.h"

/* set timeout to 0 for "standard" timeouts. Set timeout to -1 for 
   "ludicrous time" (essentially never times out) */
int ast_app_getdata(struct ast_channel *c, char *prompt, char *s, int maxlen, int timeout)
{
	int res,to,fto;
	/* XXX Merge with full version? XXX */
	if (prompt) {
		res = ast_streamfile(c, prompt, c->language);
		if (res < 0)
			return res;
	}
	fto = c->pbx ? c->pbx->rtimeout * 1000 : 6000;
	to = c->pbx ? c->pbx->dtimeout * 1000 : 2000;

	if (timeout > 0) fto = to = timeout;
	if (timeout < 0) fto = to = 1000000000;
	res = ast_readstring(c, s, maxlen, to, fto, "#");
	return res;
}


int ast_app_getdata_full(struct ast_channel *c, char *prompt, char *s, int maxlen, int timeout, int audiofd, int ctrlfd)
{
	int res,to,fto;
	if (prompt) {
		res = ast_streamfile(c, prompt, c->language);
		if (res < 0)
			return res;
	}
	fto = 6000;
	to = 2000;
	if (timeout > 0) fto = to = timeout;
	if (timeout < 0) fto = to = 1000000000;
	res = ast_readstring_full(c, s, maxlen, to, fto, "#", audiofd, ctrlfd);
	return res;
}

int ast_app_getvoice(struct ast_channel *c, char *dest, char *dstfmt, char *prompt, int silence, int maxsec)
{
	int res;
	struct ast_filestream *writer;
	int rfmt;
	int totalms=0, total;
	
	struct ast_frame *f;
	struct ast_dsp *sildet;
	/* Play prompt if requested */
	if (prompt) {
		res = ast_streamfile(c, prompt, c->language);
		if (res < 0)
			return res;
		res = ast_waitstream(c,"");
		if (res < 0)
			return res;
	}
	rfmt = c->readformat;
	res = ast_set_read_format(c, AST_FORMAT_SLINEAR);
	if (res < 0) {
		ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
		return -1;
	}
	sildet = ast_dsp_new();
	if (!sildet) {
		ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
		return -1;
	}
	writer = ast_writefile(dest, dstfmt, "Voice file", 0, 0, 0666);
	if (!writer) {
		ast_log(LOG_WARNING, "Unable to open file '%s' in format '%s' for writing\n", dest, dstfmt);
		ast_dsp_free(sildet);
		return -1;
	}
	for(;;) {
		if ((res = ast_waitfor(c, 2000)) < 0) {
			ast_log(LOG_NOTICE, "Waitfor failed while recording file '%s' format '%s'\n", dest, dstfmt);
			break;
		}
		if (res) {
			f = ast_read(c);
			if (!f) {
				ast_log(LOG_NOTICE, "Hungup while recording file '%s' format '%s'\n", dest, dstfmt);
				break;
			}
			if ((f->frametype == AST_FRAME_DTMF) && (f->subclass == '#')) {
				/* Ended happily with DTMF */
				ast_frfree(f);
				break;
			} else if (f->frametype == AST_FRAME_VOICE) {
				ast_dsp_silence(sildet, f, &total); 
				if (total > silence) {
					/* Ended happily with silence */
					ast_frfree(f);
					break;
				}
				totalms += f->samples / 8;
				if (totalms > maxsec * 1000) {
					/* Ended happily with too much stuff */
					ast_log(LOG_NOTICE, "Constraining voice on '%s' to %d seconds\n", c->name, maxsec);
					ast_frfree(f);
					break;
				}
			}
			ast_frfree(f);
		}
	}
	res = ast_set_read_format(c, rfmt);
	if (res)
		ast_log(LOG_WARNING, "Unable to restore read format on '%s'\n", c->name);
	ast_dsp_free(sildet);
	ast_closestream(writer);
	return 0;
}

int ast_app_has_voicemail(const char *mailbox)
{
	DIR *dir;
	struct dirent *de;
	char fn[256];
	char tmp[256]="";
	char *mb, *cur;
	char *context;
	int ret;
	/* If no mailbox, return immediately */
	if (ast_strlen_zero(mailbox))
		return 0;
	if (strchr(mailbox, ',')) {
		strncpy(tmp, mailbox, sizeof(tmp) - 1);
		mb = tmp;
		ret = 0;
		while((cur = strsep(&mb, ","))) {
			if (!ast_strlen_zero(cur)) {
				if (ast_app_has_voicemail(cur))
					return 1; 
			}
		}
		return 0;
	}
	strncpy(tmp, mailbox, sizeof(tmp) - 1);
	context = strchr(tmp, '@');
	if (context) {
		*context = '\0';
		context++;
	} else
		context = "default";
	snprintf(fn, sizeof(fn), "%s/voicemail/%s/%s/INBOX", (char *)ast_config_AST_SPOOL_DIR, context, tmp);
	dir = opendir(fn);
	if (!dir)
		return 0;
	while ((de = readdir(dir))) {
		if (!strncasecmp(de->d_name, "msg", 3))
			break;
	}
	closedir(dir);
	if (de)
		return 1;
	return 0;
}

int ast_app_messagecount(const char *mailbox, int *newmsgs, int *oldmsgs)
{
	DIR *dir;
	struct dirent *de;
	char fn[256];
	char tmp[256]="";
	char *mb, *cur;
	char *context;
	int ret;
	if (newmsgs)
		*newmsgs = 0;
	if (oldmsgs)
		*oldmsgs = 0;
	/* If no mailbox, return immediately */
	if (ast_strlen_zero(mailbox))
		return 0;
	if (strchr(mailbox, ',')) {
		int tmpnew, tmpold;
		strncpy(tmp, mailbox, sizeof(tmp) - 1);
		mb = tmp;
		ret = 0;
		while((cur = strsep(&mb, ", "))) {
			if (!ast_strlen_zero(cur)) {
				if (ast_app_messagecount(cur, newmsgs ? &tmpnew : NULL, oldmsgs ? &tmpold : NULL))
					return -1;
				else {
					if (newmsgs)
						*newmsgs += tmpnew; 
					if (oldmsgs)
						*oldmsgs += tmpold;
				}
			}
		}
		return 0;
	}
	strncpy(tmp, mailbox, sizeof(tmp) - 1);
	context = strchr(tmp, '@');
	if (context) {
		*context = '\0';
		context++;
	} else
		context = "default";
	if (newmsgs) {
		snprintf(fn, sizeof(fn), "%s/voicemail/%s/%s/INBOX", (char *)ast_config_AST_SPOOL_DIR, context, tmp);
		dir = opendir(fn);
		if (dir) {
			while ((de = readdir(dir))) {
				if ((strlen(de->d_name) > 3) && !strncasecmp(de->d_name, "msg", 3) &&
					!strcasecmp(de->d_name + strlen(de->d_name) - 3, "txt"))
						(*newmsgs)++;
					
			}
			closedir(dir);
		}
	}
	if (oldmsgs) {
		snprintf(fn, sizeof(fn), "%s/voicemail/%s/%s/Old", (char *)ast_config_AST_SPOOL_DIR, context, tmp);
		dir = opendir(fn);
		if (dir) {
			while ((de = readdir(dir))) {
				if ((strlen(de->d_name) > 3) && !strncasecmp(de->d_name, "msg", 3) &&
					!strcasecmp(de->d_name + strlen(de->d_name) - 3, "txt"))
						(*oldmsgs)++;
					
			}
			closedir(dir);
		}
	}
	return 0;
}

int ast_dtmf_stream(struct ast_channel *chan,struct ast_channel *peer,char *digits,int between) 
{
	char *ptr=NULL;
	int res=0;
	struct ast_frame f;
	if (!between)
		between = 100;

	if (peer)
		res = ast_autoservice_start(peer);

	if (!res) {
		res = ast_waitfor(chan,100);
		if (res > -1) {
			for (ptr=digits;*ptr;*ptr++) {
				if (*ptr == 'w') {
					res = ast_safe_sleep(chan, 500);
					if (res) 
						break;
					continue;
				}
				memset(&f, 0, sizeof(f));
				f.frametype = AST_FRAME_DTMF;
				f.subclass = *ptr;
				f.src = "ast_dtmf_stream";
				if (strchr("0123456789*#abcdABCD",*ptr)==NULL) {
					ast_log(LOG_WARNING, "Illegal DTMF character '%c' in string. (0-9*#aAbBcCdD allowed)\n",*ptr);
				} else {
					res = ast_write(chan, &f);
					if (res) 
						break;
					/* pause between digits */
					res = ast_safe_sleep(chan,between);
					if (res) 
						break;
				}
			}
		}
		if (peer)
			res = ast_autoservice_stop(peer);
	}
	return res;
}

struct linear_state {
	int fd;
	int autoclose;
	int allowoverride;
	int origwfmt;
};

static void linear_release(struct ast_channel *chan, void *params)
{
	struct linear_state *ls = params;
	if (ls->origwfmt && ast_set_write_format(chan, ls->origwfmt)) {
		ast_log(LOG_WARNING, "Unable to restore channel '%s' to format '%d'\n", chan->name, ls->origwfmt);
	}
	if (ls->autoclose)
		close(ls->fd);
	free(params);
}

static int linear_generator(struct ast_channel *chan, void *data, int len, int samples)
{
	struct ast_frame f;
	short buf[2048 + AST_FRIENDLY_OFFSET / 2];
	struct linear_state *ls = data;
	int res;
	len = samples * 2;
	if (len > sizeof(buf) - AST_FRIENDLY_OFFSET) {
		ast_log(LOG_WARNING, "Can't generate %d bytes of data!\n" ,len);
		len = sizeof(buf) - AST_FRIENDLY_OFFSET;
	}
	memset(&f, 0, sizeof(f));
	res = read(ls->fd, buf + AST_FRIENDLY_OFFSET/2, len);
	if (res > 0) {
		f.frametype = AST_FRAME_VOICE;
		f.subclass = AST_FORMAT_SLINEAR;
		f.data = buf + AST_FRIENDLY_OFFSET/2;
		f.datalen = res;
		f.samples = res / 2;
		f.offset = AST_FRIENDLY_OFFSET;
		ast_write(chan, &f);
		if (res == len)
			return 0;
	}
	return -1;
}

static void *linear_alloc(struct ast_channel *chan, void *params)
{
	struct linear_state *ls;
	/* In this case, params is already malloc'd */
	if (params) {
		ls = params;
		if (ls->allowoverride)
			chan->writeinterrupt = 1;
		else
			chan->writeinterrupt = 0;
		ls->origwfmt = chan->writeformat;
		if (ast_set_write_format(chan, AST_FORMAT_SLINEAR)) {
			ast_log(LOG_WARNING, "Unable to set '%s' to linear format (write)\n", chan->name);
			free(ls);
			ls = params = NULL;
		}
	}
	return params;
}

static struct ast_generator linearstream = 
{
	alloc: linear_alloc,
	release: linear_release,
	generate: linear_generator,
};

int ast_linear_stream(struct ast_channel *chan, const char *filename, int fd, int allowoverride)
{
	struct linear_state *lin;
	char tmpf[256] = "";
	int res = -1;
	int autoclose = 0;
	if (fd < 0) {
		if (!filename || ast_strlen_zero(filename))
			return -1;
		autoclose = 1;
		if (filename[0] == '/') 
			strncpy(tmpf, filename, sizeof(tmpf) - 1);
		else
			snprintf(tmpf, sizeof(tmpf), "%s/%s/%s", (char *)ast_config_AST_VAR_DIR, "sounds", filename);
		fd = open(tmpf, O_RDONLY);
		if (fd < 0){
			ast_log(LOG_WARNING, "Unable to open file '%s': %s\n", tmpf, strerror(errno));
			return -1;
		}
	}
	lin = malloc(sizeof(struct linear_state));
	if (lin) {
		memset(lin, 0, sizeof(lin));
		lin->fd = fd;
		lin->allowoverride = allowoverride;
		lin->autoclose = autoclose;
		res = ast_activate_generator(chan, &linearstream, lin);
	}
	return res;
}

int ast_control_streamfile(struct ast_channel *chan, char *file, char *fwd, char *rev, char *stop, char *pause, int skipms) 
{
	struct timeval started, ended;
	long elapsed = 0,last_elapsed =0;
	char *breaks;
	int blen=2;
	int res=0;

	if (stop)
		blen += strlen(stop);
	if (pause)
		blen += strlen(pause);

	breaks = alloca(blen + 1);
	breaks[0] = '\0';
	strcat(breaks, stop);
	strcat(breaks, pause);

	if (chan->_state != AST_STATE_UP)
		res = ast_answer(chan);

	if (chan)
		ast_stopstream(chan);

	for (;;) {
		gettimeofday(&started,NULL);

		if (chan)
			ast_stopstream(chan);
		res = ast_streamfile(chan, file, chan->language);
		if (!res) {
			res = 1;
			if (elapsed) {
				ast_stream_fastforward(chan->stream, elapsed);
				last_elapsed = elapsed - 200;
			}
			if (res)
				res = ast_waitstream_fr(chan, breaks, fwd, rev, skipms);
			else
				break;
		}

		if (res < 1)
			break;

		if (pause != NULL && strchr(pause, res)) {
			gettimeofday(&ended, NULL);
			elapsed = (((ended.tv_sec * 1000) + ended.tv_usec / 1000) - ((started.tv_sec * 1000) + started.tv_usec / 1000) + last_elapsed);
			for(;;) {
				if (chan)
					ast_stopstream(chan);
				res = ast_waitfordigit(chan, 1000);
				if(res == 0)
					continue;
				else if(res == -1 || strchr(pause, res) || (stop && strchr(stop, res)))
					break;
			}
			if (res == *pause) {
				res = 0;
				continue;
			}
		}
		if (res == -1)
			break;

		/* if we get one of our stop chars, return it to the calling function */
		if (stop && strchr(stop, res)) {
			/* res = 0; */
			break;
		}
	}
	if (chan)
		ast_stopstream(chan);

	return res;
}