1473c06cbe1eb914a4f9d9e17b60d31000e69a41
[asterisk/asterisk.git] / main / app.c
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 Convenient Application Routines
22  *
23  * \author Mark Spencer <markster@digium.com>
24  */
25
26 /** \example
27  * \par This is an example of how to develop an app.
28  * Application Skeleton is an example of creating an application for Asterisk.
29  * \verbinclude app_skel.c
30  */
31
32 /*** MODULEINFO
33         <support_level>core</support_level>
34  ***/
35
36 #include "asterisk.h"
37
38 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
39
40 #ifdef HAVE_SYS_STAT_H
41 #include <sys/stat.h>
42 #endif
43 #include <regex.h>          /* for regcomp(3) */
44 #include <sys/file.h>       /* for flock(2) */
45 #include <signal.h>         /* for pthread_sigmask(3) */
46 #include <stdlib.h>         /* for closefrom(3) */
47 #include <sys/types.h>
48 #include <sys/wait.h>       /* for waitpid(2) */
49 #ifndef HAVE_CLOSEFROM
50 #include <dirent.h>         /* for opendir(3)   */
51 #endif
52 #ifdef HAVE_CAP
53 #include <sys/capability.h>
54 #endif /* HAVE_CAP */
55
56 #include "asterisk/paths.h"     /* use ast_config_AST_DATA_DIR */
57 #include "asterisk/channel.h"
58 #include "asterisk/pbx.h"
59 #include "asterisk/file.h"
60 #include "asterisk/app.h"
61 #include "asterisk/dsp.h"
62 #include "asterisk/utils.h"
63 #include "asterisk/lock.h"
64 #include "asterisk/indications.h"
65 #include "asterisk/linkedlists.h"
66 #include "asterisk/threadstorage.h"
67 #include "asterisk/test.h"
68 #include "asterisk/module.h"
69 #include "asterisk/astobj2.h"
70 #include "asterisk/stasis.h"
71
72 #define MWI_TOPIC_BUCKETS 57
73
74 AST_THREADSTORAGE_PUBLIC(ast_str_thread_global_buf);
75
76 static pthread_t shaun_of_the_dead_thread = AST_PTHREADT_NULL;
77
78 struct zombie {
79         pid_t pid;
80         AST_LIST_ENTRY(zombie) list;
81 };
82
83 static AST_LIST_HEAD_STATIC(zombies, zombie);
84
85 static struct stasis_topic *mwi_topic_all;
86 static struct stasis_caching_topic *mwi_topic_cached;
87 static struct stasis_topic_pool *mwi_topic_pool;
88
89 STASIS_MESSAGE_TYPE_DEFN(stasis_mwi_state_type);
90
91 static void *shaun_of_the_dead(void *data)
92 {
93         struct zombie *cur;
94         int status;
95         for (;;) {
96                 if (!AST_LIST_EMPTY(&zombies)) {
97                         /* Don't allow cancellation while we have a lock. */
98                         pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
99                         AST_LIST_LOCK(&zombies);
100                         AST_LIST_TRAVERSE_SAFE_BEGIN(&zombies, cur, list) {
101                                 if (waitpid(cur->pid, &status, WNOHANG) != 0) {
102                                         AST_LIST_REMOVE_CURRENT(list);
103                                         ast_free(cur);
104                                 }
105                         }
106                         AST_LIST_TRAVERSE_SAFE_END
107                         AST_LIST_UNLOCK(&zombies);
108                         pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
109                 }
110                 pthread_testcancel();
111                 /* Wait for 60 seconds, without engaging in a busy loop. */
112                 ast_poll(NULL, 0, AST_LIST_FIRST(&zombies) ? 5000 : 60000);
113         }
114         return NULL;
115 }
116
117
118 #define AST_MAX_FORMATS 10
119
120 static AST_RWLIST_HEAD_STATIC(groups, ast_group_info);
121
122 /*!
123  * \brief This function presents a dialtone and reads an extension into 'collect'
124  * which must be a pointer to a **pre-initialized** array of char having a
125  * size of 'size' suitable for writing to.  It will collect no more than the smaller
126  * of 'maxlen' or 'size' minus the original strlen() of collect digits.
127  * \param chan struct.
128  * \param context
129  * \param collect
130  * \param size
131  * \param maxlen
132  * \param timeout timeout in milliseconds
133  *
134  * \return 0 if extension does not exist, 1 if extension exists
135 */
136 int ast_app_dtget(struct ast_channel *chan, const char *context, char *collect, size_t size, int maxlen, int timeout)
137 {
138         struct ast_tone_zone_sound *ts;
139         int res = 0, x = 0;
140
141         if (maxlen > size) {
142                 maxlen = size;
143         }
144
145         if (!timeout) {
146                 if (ast_channel_pbx(chan) && ast_channel_pbx(chan)->dtimeoutms) {
147                         timeout = ast_channel_pbx(chan)->dtimeoutms;
148                 } else {
149                         timeout = 5000;
150                 }
151         }
152
153         if ((ts = ast_get_indication_tone(ast_channel_zone(chan), "dial"))) {
154                 res = ast_playtones_start(chan, 0, ts->data, 0);
155                 ts = ast_tone_zone_sound_unref(ts);
156         } else {
157                 ast_log(LOG_NOTICE, "Huh....? no dial for indications?\n");
158         }
159
160         for (x = strlen(collect); x < maxlen; ) {
161                 res = ast_waitfordigit(chan, timeout);
162                 if (!ast_ignore_pattern(context, collect)) {
163                         ast_playtones_stop(chan);
164                 }
165                 if (res < 1) {
166                         break;
167                 }
168                 if (res == '#') {
169                         break;
170                 }
171                 collect[x++] = res;
172                 if (!ast_matchmore_extension(chan, context, collect, 1,
173                         S_COR(ast_channel_caller(chan)->id.number.valid, ast_channel_caller(chan)->id.number.str, NULL))) {
174                         break;
175                 }
176         }
177
178         if (res >= 0) {
179                 res = ast_exists_extension(chan, context, collect, 1,
180                         S_COR(ast_channel_caller(chan)->id.number.valid, ast_channel_caller(chan)->id.number.str, NULL)) ? 1 : 0;
181         }
182
183         return res;
184 }
185
186 /*!
187  * \brief ast_app_getdata
188  * \param c The channel to read from
189  * \param prompt The file to stream to the channel
190  * \param s The string to read in to.  Must be at least the size of your length
191  * \param maxlen How many digits to read (maximum)
192  * \param timeout set timeout to 0 for "standard" timeouts. Set timeout to -1 for
193  *      "ludicrous time" (essentially never times out) */
194 enum ast_getdata_result ast_app_getdata(struct ast_channel *c, const char *prompt, char *s, int maxlen, int timeout)
195 {
196         int res = 0, to, fto;
197         char *front, *filename;
198
199         /* XXX Merge with full version? XXX */
200
201         if (maxlen)
202                 s[0] = '\0';
203
204         if (!prompt)
205                 prompt = "";
206
207         filename = ast_strdupa(prompt);
208         while ((front = strsep(&filename, "&"))) {
209                 ast_test_suite_event_notify("PLAYBACK", "Message: %s\r\nChannel: %s", front, ast_channel_name(c));
210                 if (!ast_strlen_zero(front)) {
211                         res = ast_streamfile(c, front, ast_channel_language(c));
212                         if (res)
213                                 continue;
214                 }
215                 if (ast_strlen_zero(filename)) {
216                         /* set timeouts for the last prompt */
217                         fto = ast_channel_pbx(c) ? ast_channel_pbx(c)->rtimeoutms : 6000;
218                         to = ast_channel_pbx(c) ? ast_channel_pbx(c)->dtimeoutms : 2000;
219
220                         if (timeout > 0) {
221                                 fto = to = timeout;
222                         }
223                         if (timeout < 0) {
224                                 fto = to = 1000000000;
225                         }
226                 } else {
227                         /* there is more than one prompt, so
228                          * get rid of the long timeout between
229                          * prompts, and make it 50ms */
230                         fto = 50;
231                         to = ast_channel_pbx(c) ? ast_channel_pbx(c)->dtimeoutms : 2000;
232                 }
233                 res = ast_readstring(c, s, maxlen, to, fto, "#");
234                 if (res == AST_GETDATA_EMPTY_END_TERMINATED) {
235                         return res;
236                 }
237                 if (!ast_strlen_zero(s)) {
238                         return res;
239                 }
240         }
241
242         return res;
243 }
244
245 /* The lock type used by ast_lock_path() / ast_unlock_path() */
246 static enum AST_LOCK_TYPE ast_lock_type = AST_LOCK_TYPE_LOCKFILE;
247
248 int ast_app_getdata_full(struct ast_channel *c, const char *prompt, char *s, int maxlen, int timeout, int audiofd, int ctrlfd)
249 {
250         int res, to = 2000, fto = 6000;
251
252         if (!ast_strlen_zero(prompt)) {
253                 res = ast_streamfile(c, prompt, ast_channel_language(c));
254                 if (res < 0) {
255                         return res;
256                 }
257         }
258
259         if (timeout > 0) {
260                 fto = to = timeout;
261         }
262         if (timeout < 0) {
263                 fto = to = 1000000000;
264         }
265
266         res = ast_readstring_full(c, s, maxlen, to, fto, "#", audiofd, ctrlfd);
267
268         return res;
269 }
270
271 int ast_app_exec_macro(struct ast_channel *autoservice_chan, struct ast_channel *macro_chan, const char *macro_args)
272 {
273         struct ast_app *macro_app;
274         int res;
275
276         macro_app = pbx_findapp("Macro");
277         if (!macro_app) {
278                 ast_log(LOG_WARNING,
279                         "Cannot run 'Macro(%s)'.  The application is not available.\n", macro_args);
280                 return -1;
281         }
282         if (autoservice_chan) {
283                 ast_autoservice_start(autoservice_chan);
284         }
285
286         ast_debug(4, "%s Original location: %s,%s,%d\n", ast_channel_name(macro_chan),
287                 ast_channel_context(macro_chan), ast_channel_exten(macro_chan),
288                 ast_channel_priority(macro_chan));
289
290         res = pbx_exec(macro_chan, macro_app, macro_args);
291         ast_debug(4, "Macro exited with status %d\n", res);
292
293         /*
294          * Assume anything negative from Macro is an error.
295          * Anything else is success.
296          */
297         if (res < 0) {
298                 res = -1;
299         } else {
300                 res = 0;
301         }
302
303         ast_debug(4, "%s Ending location: %s,%s,%d\n", ast_channel_name(macro_chan),
304                 ast_channel_context(macro_chan), ast_channel_exten(macro_chan),
305                 ast_channel_priority(macro_chan));
306
307         if (autoservice_chan) {
308                 ast_autoservice_stop(autoservice_chan);
309         }
310         return res;
311 }
312
313 int ast_app_run_macro(struct ast_channel *autoservice_chan, struct ast_channel *macro_chan, const char *macro_name, const char *macro_args)
314 {
315         int res;
316         char *args_str;
317         size_t args_len;
318
319         if (ast_strlen_zero(macro_args)) {
320                 return ast_app_exec_macro(autoservice_chan, macro_chan, macro_name);
321         }
322
323         /* Create the Macro application argument string. */
324         args_len = strlen(macro_name) + strlen(macro_args) + 2;
325         args_str = ast_malloc(args_len);
326         if (!args_str) {
327                 return -1;
328         }
329         snprintf(args_str, args_len, "%s,%s", macro_name, macro_args);
330
331         res = ast_app_exec_macro(autoservice_chan, macro_chan, args_str);
332         ast_free(args_str);
333         return res;
334 }
335
336 static const struct ast_app_stack_funcs *app_stack_callbacks;
337
338 void ast_install_stack_functions(const struct ast_app_stack_funcs *funcs)
339 {
340         app_stack_callbacks = funcs;
341 }
342
343 const char *ast_app_expand_sub_args(struct ast_channel *chan, const char *args)
344 {
345         const struct ast_app_stack_funcs *funcs;
346         const char *new_args;
347
348         funcs = app_stack_callbacks;
349         if (!funcs || !funcs->expand_sub_args) {
350                 ast_log(LOG_WARNING,
351                         "Cannot expand 'Gosub(%s)' arguments.  The app_stack module is not available.\n",
352                         args);
353                 return NULL;
354         }
355         ast_module_ref(funcs->module);
356
357         new_args = funcs->expand_sub_args(chan, args);
358         ast_module_unref(funcs->module);
359         return new_args;
360 }
361
362 int ast_app_exec_sub(struct ast_channel *autoservice_chan, struct ast_channel *sub_chan, const char *sub_args, int ignore_hangup)
363 {
364         const struct ast_app_stack_funcs *funcs;
365         int res;
366
367         funcs = app_stack_callbacks;
368         if (!funcs || !funcs->run_sub) {
369                 ast_log(LOG_WARNING,
370                         "Cannot run 'Gosub(%s)'.  The app_stack module is not available.\n",
371                         sub_args);
372                 return -1;
373         }
374         ast_module_ref(funcs->module);
375
376         if (autoservice_chan) {
377                 ast_autoservice_start(autoservice_chan);
378         }
379
380         res = funcs->run_sub(sub_chan, sub_args, ignore_hangup);
381         ast_module_unref(funcs->module);
382
383         if (autoservice_chan) {
384                 ast_autoservice_stop(autoservice_chan);
385         }
386         return res;
387 }
388
389 int ast_app_run_sub(struct ast_channel *autoservice_chan, struct ast_channel *sub_chan, const char *sub_location, const char *sub_args, int ignore_hangup)
390 {
391         int res;
392         char *args_str;
393         size_t args_len;
394
395         if (ast_strlen_zero(sub_args)) {
396                 return ast_app_exec_sub(autoservice_chan, sub_chan, sub_location, ignore_hangup);
397         }
398
399         /* Create the Gosub application argument string. */
400         args_len = strlen(sub_location) + strlen(sub_args) + 3;
401         args_str = ast_malloc(args_len);
402         if (!args_str) {
403                 return -1;
404         }
405         snprintf(args_str, args_len, "%s(%s)", sub_location, sub_args);
406
407         res = ast_app_exec_sub(autoservice_chan, sub_chan, args_str, ignore_hangup);
408         ast_free(args_str);
409         return res;
410 }
411
412 static int (*ast_has_voicemail_func)(const char *mailbox, const char *folder) = NULL;
413 static int (*ast_inboxcount_func)(const char *mailbox, int *newmsgs, int *oldmsgs) = NULL;
414 static int (*ast_inboxcount2_func)(const char *mailbox, int *urgentmsgs, int *newmsgs, int *oldmsgs) = NULL;
415 static int (*ast_sayname_func)(struct ast_channel *chan, const char *mailbox, const char *context) = NULL;
416 static int (*ast_messagecount_func)(const char *context, const char *mailbox, const char *folder) = NULL;
417 static int (*ast_copy_recording_to_vm_func)(struct ast_vm_recording_data *vm_rec_data) = NULL;
418 static const char *(*ast_vm_index_to_foldername_func)(int id) = NULL;
419 static struct ast_vm_mailbox_snapshot *(*ast_vm_mailbox_snapshot_create_func)(const char *mailbox,
420         const char *context,
421         const char *folder,
422         int descending,
423         enum ast_vm_snapshot_sort_val sort_val,
424         int combine_INBOX_and_OLD) = NULL;
425 static struct ast_vm_mailbox_snapshot *(*ast_vm_mailbox_snapshot_destroy_func)(struct ast_vm_mailbox_snapshot *mailbox_snapshot) = NULL;
426 static int (*ast_vm_msg_move_func)(const char *mailbox,
427         const char *context,
428         size_t num_msgs,
429         const char *oldfolder,
430         const char *old_msg_ids[],
431         const char *newfolder) = NULL;
432 static int (*ast_vm_msg_remove_func)(const char *mailbox,
433         const char *context,
434         size_t num_msgs,
435         const char *folder,
436         const char *msgs[]) = NULL;
437 static int (*ast_vm_msg_forward_func)(const char *from_mailbox,
438         const char *from_context,
439         const char *from_folder,
440         const char *to_mailbox,
441         const char *to_context,
442         const char *to_folder,
443         size_t num_msgs,
444         const char *msg_ids[],
445         int delete_old) = NULL;
446 static int (*ast_vm_msg_play_func)(struct ast_channel *chan,
447         const char *mailbox,
448         const char *context,
449         const char *folder,
450         const char *msg_num,
451         ast_vm_msg_play_cb cb) = NULL;
452
453 void ast_install_vm_functions(int (*has_voicemail_func)(const char *mailbox, const char *folder),
454                               int (*inboxcount_func)(const char *mailbox, int *newmsgs, int *oldmsgs),
455                               int (*inboxcount2_func)(const char *mailbox, int *urgentmsgs, int *newmsgs, int *oldmsgs),
456                               int (*messagecount_func)(const char *context, const char *mailbox, const char *folder),
457                               int (*sayname_func)(struct ast_channel *chan, const char *mailbox, const char *context),
458                               int (*copy_recording_to_vm_func)(struct ast_vm_recording_data *vm_rec_data),
459                               const char *vm_index_to_foldername_func(int id),
460                               struct ast_vm_mailbox_snapshot *(*vm_mailbox_snapshot_create_func)(const char *mailbox,
461                                 const char *context,
462                                 const char *folder,
463                                 int descending,
464                                 enum ast_vm_snapshot_sort_val sort_val,
465                                 int combine_INBOX_and_OLD),
466                               struct ast_vm_mailbox_snapshot *(*vm_mailbox_snapshot_destroy_func)(struct ast_vm_mailbox_snapshot *mailbox_snapshot),
467                               int (*vm_msg_move_func)(const char *mailbox,
468                                 const char *context,
469                                 size_t num_msgs,
470                                 const char *oldfolder,
471                                 const char *old_msg_ids[],
472                                 const char *newfolder),
473                               int (*vm_msg_remove_func)(const char *mailbox,
474                                 const char *context,
475                                 size_t num_msgs,
476                                 const char *folder,
477                                 const char *msgs[]),
478                               int (*vm_msg_forward_func)(const char *from_mailbox,
479                                 const char *from_context,
480                                 const char *from_folder,
481                                 const char *to_mailbox,
482                                 const char *to_context,
483                                 const char *to_folder,
484                                 size_t num_msgs,
485                                 const char *msg_ids[],
486                                 int delete_old),
487                               int (*vm_msg_play_func)(struct ast_channel *chan,
488                                 const char *mailbox,
489                                 const char *context,
490                                 const char *folder,
491                                 const char *msg_num,
492                                 ast_vm_msg_play_cb cb))
493 {
494         ast_has_voicemail_func = has_voicemail_func;
495         ast_inboxcount_func = inboxcount_func;
496         ast_inboxcount2_func = inboxcount2_func;
497         ast_messagecount_func = messagecount_func;
498         ast_sayname_func = sayname_func;
499         ast_copy_recording_to_vm_func = copy_recording_to_vm_func;
500         ast_vm_index_to_foldername_func = vm_index_to_foldername_func;
501         ast_vm_mailbox_snapshot_create_func = vm_mailbox_snapshot_create_func;
502         ast_vm_mailbox_snapshot_destroy_func = vm_mailbox_snapshot_destroy_func;
503         ast_vm_msg_move_func = vm_msg_move_func;
504         ast_vm_msg_remove_func = vm_msg_remove_func;
505         ast_vm_msg_forward_func = vm_msg_forward_func;
506         ast_vm_msg_play_func = vm_msg_play_func;
507 }
508
509 void ast_uninstall_vm_functions(void)
510 {
511         ast_has_voicemail_func = NULL;
512         ast_inboxcount_func = NULL;
513         ast_inboxcount2_func = NULL;
514         ast_messagecount_func = NULL;
515         ast_sayname_func = NULL;
516         ast_copy_recording_to_vm_func = NULL;
517         ast_vm_index_to_foldername_func = NULL;
518         ast_vm_mailbox_snapshot_create_func = NULL;
519         ast_vm_mailbox_snapshot_destroy_func = NULL;
520         ast_vm_msg_move_func = NULL;
521         ast_vm_msg_remove_func = NULL;
522         ast_vm_msg_forward_func = NULL;
523         ast_vm_msg_play_func = NULL;
524 }
525
526 #ifdef TEST_FRAMEWORK
527 int (*ast_vm_test_create_user_func)(const char *context, const char *mailbox) = NULL;
528 int (*ast_vm_test_destroy_user_func)(const char *context, const char *mailbox) = NULL;
529
530 void ast_install_vm_test_functions(int (*vm_test_create_user_func)(const char *context, const char *mailbox),
531                                    int (*vm_test_destroy_user_func)(const char *context, const char *mailbox))
532 {
533         ast_vm_test_create_user_func = vm_test_create_user_func;
534         ast_vm_test_destroy_user_func = vm_test_destroy_user_func;
535 }
536
537 void ast_uninstall_vm_test_functions(void)
538 {
539         ast_vm_test_create_user_func = NULL;
540         ast_vm_test_destroy_user_func = NULL;
541 }
542 #endif
543
544 int ast_app_has_voicemail(const char *mailbox, const char *folder)
545 {
546         static int warned = 0;
547         if (ast_has_voicemail_func) {
548                 return ast_has_voicemail_func(mailbox, folder);
549         }
550
551         if (warned++ % 10 == 0) {
552                 ast_verb(3, "Message check requested for mailbox %s/folder %s but voicemail not loaded.\n", mailbox, folder ? folder : "INBOX");
553         }
554         return 0;
555 }
556
557 /*!
558  * \internal
559  * \brief Function used as a callback for ast_copy_recording_to_vm when a real one isn't installed.
560  * \param vm_rec_data Stores crucial information about the voicemail that will basically just be used
561  * to figure out what the name of the recipient was supposed to be
562  */
563 int ast_app_copy_recording_to_vm(struct ast_vm_recording_data *vm_rec_data)
564 {
565         static int warned = 0;
566
567         if (ast_copy_recording_to_vm_func) {
568                 return ast_copy_recording_to_vm_func(vm_rec_data);
569         }
570
571         if (warned++ % 10 == 0) {
572                 ast_verb(3, "copy recording to voicemail called to copy %s.%s to %s@%s, but voicemail not loaded.\n",
573                         vm_rec_data->recording_file, vm_rec_data->recording_ext,
574                         vm_rec_data->mailbox, vm_rec_data->context);
575         }
576
577         return -1;
578 }
579
580 int ast_app_inboxcount(const char *mailbox, int *newmsgs, int *oldmsgs)
581 {
582         static int warned = 0;
583         if (newmsgs) {
584                 *newmsgs = 0;
585         }
586         if (oldmsgs) {
587                 *oldmsgs = 0;
588         }
589         if (ast_inboxcount_func) {
590                 return ast_inboxcount_func(mailbox, newmsgs, oldmsgs);
591         }
592
593         if (warned++ % 10 == 0) {
594                 ast_verb(3, "Message count requested for mailbox %s but voicemail not loaded.\n", mailbox);
595         }
596
597         return 0;
598 }
599
600 int ast_app_inboxcount2(const char *mailbox, int *urgentmsgs, int *newmsgs, int *oldmsgs)
601 {
602         static int warned = 0;
603         if (newmsgs) {
604                 *newmsgs = 0;
605         }
606         if (oldmsgs) {
607                 *oldmsgs = 0;
608         }
609         if (urgentmsgs) {
610                 *urgentmsgs = 0;
611         }
612         if (ast_inboxcount2_func) {
613                 return ast_inboxcount2_func(mailbox, urgentmsgs, newmsgs, oldmsgs);
614         }
615
616         if (warned++ % 10 == 0) {
617                 ast_verb(3, "Message count requested for mailbox %s but voicemail not loaded.\n", mailbox);
618         }
619
620         return 0;
621 }
622
623 int ast_app_sayname(struct ast_channel *chan, const char *mailbox, const char *context)
624 {
625         if (ast_sayname_func) {
626                 return ast_sayname_func(chan, mailbox, context);
627         }
628         return -1;
629 }
630
631 int ast_app_messagecount(const char *context, const char *mailbox, const char *folder)
632 {
633         static int warned = 0;
634         if (ast_messagecount_func) {
635                 return ast_messagecount_func(context, mailbox, folder);
636         }
637
638         if (!warned) {
639                 warned++;
640                 ast_verb(3, "Message count requested for mailbox %s@%s/%s but voicemail not loaded.\n", mailbox, context, folder);
641         }
642
643         return 0;
644 }
645
646 const char *ast_vm_index_to_foldername(int id)
647 {
648         if (ast_vm_index_to_foldername_func) {
649                 return ast_vm_index_to_foldername_func(id);
650         }
651         return NULL;
652 }
653
654 struct ast_vm_mailbox_snapshot *ast_vm_mailbox_snapshot_create(const char *mailbox,
655         const char *context,
656         const char *folder,
657         int descending,
658         enum ast_vm_snapshot_sort_val sort_val,
659         int combine_INBOX_and_OLD)
660 {
661         if (ast_vm_mailbox_snapshot_create_func) {
662                 return ast_vm_mailbox_snapshot_create_func(mailbox, context, folder, descending, sort_val, combine_INBOX_and_OLD);
663         }
664         return NULL;
665 }
666
667 struct ast_vm_mailbox_snapshot *ast_vm_mailbox_snapshot_destroy(struct ast_vm_mailbox_snapshot *mailbox_snapshot)
668 {
669         if (ast_vm_mailbox_snapshot_destroy_func) {
670                 return ast_vm_mailbox_snapshot_destroy_func(mailbox_snapshot);
671         }
672         return NULL;
673 }
674
675 int ast_vm_msg_move(const char *mailbox,
676         const char *context,
677         size_t num_msgs,
678         const char *oldfolder,
679         const char *old_msg_ids[],
680         const char *newfolder)
681 {
682         if (ast_vm_msg_move_func) {
683                 return ast_vm_msg_move_func(mailbox, context, num_msgs, oldfolder, old_msg_ids, newfolder);
684         }
685         return 0;
686 }
687
688 int ast_vm_msg_remove(const char *mailbox,
689         const char *context,
690         size_t num_msgs,
691         const char *folder,
692         const char *msgs[])
693 {
694         if (ast_vm_msg_remove_func) {
695                 return ast_vm_msg_remove_func(mailbox, context, num_msgs, folder, msgs);
696         }
697         return 0;
698 }
699
700 int ast_vm_msg_forward(const char *from_mailbox,
701         const char *from_context,
702         const char *from_folder,
703         const char *to_mailbox,
704         const char *to_context,
705         const char *to_folder,
706         size_t num_msgs,
707         const char *msg_ids[],
708         int delete_old)
709 {
710         if (ast_vm_msg_forward_func) {
711                 return ast_vm_msg_forward_func(from_mailbox, from_context, from_folder, to_mailbox, to_context, to_folder, num_msgs, msg_ids, delete_old);
712         }
713         return 0;
714 }
715
716 int ast_vm_msg_play(struct ast_channel *chan,
717         const char *mailbox,
718         const char *context,
719         const char *folder,
720         const char *msg_num,
721         ast_vm_msg_play_cb cb)
722 {
723         if (ast_vm_msg_play_func) {
724                 return ast_vm_msg_play_func(chan, mailbox, context, folder, msg_num, cb);
725         }
726         return 0;
727 }
728
729 #ifdef TEST_FRAMEWORK
730 int ast_vm_test_create_user(const char *context, const char *mailbox)
731 {
732         if (ast_vm_test_create_user_func) {
733                 return ast_vm_test_create_user_func(context, mailbox);
734         }
735         return 0;
736 }
737
738 int ast_vm_test_destroy_user(const char *context, const char *mailbox)
739 {
740         if (ast_vm_test_destroy_user_func) {
741                 return ast_vm_test_destroy_user_func(context, mailbox);
742         }
743         return 0;
744 }
745 #endif
746
747 int ast_dtmf_stream(struct ast_channel *chan, struct ast_channel *peer, const char *digits, int between, unsigned int duration)
748 {
749         const char *ptr;
750         int res;
751         struct ast_silence_generator *silgen = NULL;
752
753         if (!between) {
754                 between = 100;
755         }
756
757         if (peer && ast_autoservice_start(peer)) {
758                 return -1;
759         }
760
761         /* Need a quiet time before sending digits. */
762         if (ast_opt_transmit_silence) {
763                 silgen = ast_channel_start_silence_generator(chan);
764         }
765         res = ast_safe_sleep(chan, 100);
766         if (res) {
767                 goto dtmf_stream_cleanup;
768         }
769
770         for (ptr = digits; *ptr; ptr++) {
771                 if (*ptr == 'w') {
772                         /* 'w' -- wait half a second */
773                         if ((res = ast_safe_sleep(chan, 500))) {
774                                 break;
775                         }
776                 } else if (*ptr == 'W') {
777                         /* 'W' -- wait a second */
778                         if ((res = ast_safe_sleep(chan, 1000))) {
779                                 break;
780                         }
781                 } else if (strchr("0123456789*#abcdfABCDF", *ptr)) {
782                         if (*ptr == 'f' || *ptr == 'F') {
783                                 /* ignore return values if not supported by channel */
784                                 ast_indicate(chan, AST_CONTROL_FLASH);
785                         } else {
786                                 /* Character represents valid DTMF */
787                                 ast_senddigit(chan, *ptr, duration);
788                         }
789                         /* pause between digits */
790                         if ((res = ast_safe_sleep(chan, between))) {
791                                 break;
792                         }
793                 } else {
794                         ast_log(LOG_WARNING, "Illegal DTMF character '%c' in string. (0-9*#aAbBcCdD allowed)\n", *ptr);
795                 }
796         }
797
798 dtmf_stream_cleanup:
799         if (silgen) {
800                 ast_channel_stop_silence_generator(chan, silgen);
801         }
802         if (peer && ast_autoservice_stop(peer)) {
803                 res = -1;
804         }
805
806         return res;
807 }
808
809 struct linear_state {
810         int fd;
811         int autoclose;
812         int allowoverride;
813         struct ast_format origwfmt;
814 };
815
816 static void linear_release(struct ast_channel *chan, void *params)
817 {
818         struct linear_state *ls = params;
819
820         if (ls->origwfmt.id && ast_set_write_format(chan, &ls->origwfmt)) {
821                 ast_log(LOG_WARNING, "Unable to restore channel '%s' to format '%d'\n", ast_channel_name(chan), ls->origwfmt.id);
822         }
823
824         if (ls->autoclose) {
825                 close(ls->fd);
826         }
827
828         ast_free(params);
829 }
830
831 static int linear_generator(struct ast_channel *chan, void *data, int len, int samples)
832 {
833         short buf[2048 + AST_FRIENDLY_OFFSET / 2];
834         struct linear_state *ls = data;
835         struct ast_frame f = {
836                 .frametype = AST_FRAME_VOICE,
837                 .data.ptr = buf + AST_FRIENDLY_OFFSET / 2,
838                 .offset = AST_FRIENDLY_OFFSET,
839         };
840         int res;
841
842         ast_format_set(&f.subclass.format, AST_FORMAT_SLINEAR, 0);
843
844         len = samples * 2;
845         if (len > sizeof(buf) - AST_FRIENDLY_OFFSET) {
846                 ast_log(LOG_WARNING, "Can't generate %d bytes of data!\n" , len);
847                 len = sizeof(buf) - AST_FRIENDLY_OFFSET;
848         }
849         res = read(ls->fd, buf + AST_FRIENDLY_OFFSET/2, len);
850         if (res > 0) {
851                 f.datalen = res;
852                 f.samples = res / 2;
853                 ast_write(chan, &f);
854                 if (res == len) {
855                         return 0;
856                 }
857         }
858         return -1;
859 }
860
861 static void *linear_alloc(struct ast_channel *chan, void *params)
862 {
863         struct linear_state *ls = params;
864
865         if (!params) {
866                 return NULL;
867         }
868
869         /* In this case, params is already malloc'd */
870         if (ls->allowoverride) {
871                 ast_set_flag(ast_channel_flags(chan), AST_FLAG_WRITE_INT);
872         } else {
873                 ast_clear_flag(ast_channel_flags(chan), AST_FLAG_WRITE_INT);
874         }
875
876         ast_format_copy(&ls->origwfmt, ast_channel_writeformat(chan));
877
878         if (ast_set_write_format_by_id(chan, AST_FORMAT_SLINEAR)) {
879                 ast_log(LOG_WARNING, "Unable to set '%s' to linear format (write)\n", ast_channel_name(chan));
880                 ast_free(ls);
881                 ls = params = NULL;
882         }
883
884         return params;
885 }
886
887 static struct ast_generator linearstream =
888 {
889         .alloc = linear_alloc,
890         .release = linear_release,
891         .generate = linear_generator,
892 };
893
894 int ast_linear_stream(struct ast_channel *chan, const char *filename, int fd, int allowoverride)
895 {
896         struct linear_state *lin;
897         char tmpf[256];
898         int res = -1;
899         int autoclose = 0;
900         if (fd < 0) {
901                 if (ast_strlen_zero(filename)) {
902                         return -1;
903                 }
904                 autoclose = 1;
905                 if (filename[0] == '/') {
906                         ast_copy_string(tmpf, filename, sizeof(tmpf));
907                 } else {
908                         snprintf(tmpf, sizeof(tmpf), "%s/%s/%s", ast_config_AST_DATA_DIR, "sounds", filename);
909                 }
910                 if ((fd = open(tmpf, O_RDONLY)) < 0) {
911                         ast_log(LOG_WARNING, "Unable to open file '%s': %s\n", tmpf, strerror(errno));
912                         return -1;
913                 }
914         }
915         if ((lin = ast_calloc(1, sizeof(*lin)))) {
916                 lin->fd = fd;
917                 lin->allowoverride = allowoverride;
918                 lin->autoclose = autoclose;
919                 res = ast_activate_generator(chan, &linearstream, lin);
920         }
921         return res;
922 }
923
924 static int control_streamfile(struct ast_channel *chan,
925         const char *file,
926         const char *fwd,
927         const char *rev,
928         const char *stop,
929         const char *suspend,
930         const char *restart,
931         int skipms,
932         long *offsetms,
933         ast_waitstream_fr_cb cb)
934 {
935         char *breaks = NULL;
936         char *end = NULL;
937         int blen = 2;
938         int res;
939         long pause_restart_point = 0;
940         long offset = 0;
941
942         if (!file) {
943                 return -1;
944         }
945         if (offsetms) {
946                 offset = *offsetms * 8; /* XXX Assumes 8kHz */
947         }
948
949         if (stop) {
950                 blen += strlen(stop);
951         }
952         if (suspend) {
953                 blen += strlen(suspend);
954         }
955         if (restart) {
956                 blen += strlen(restart);
957         }
958
959         if (blen > 2) {
960                 breaks = ast_alloca(blen + 1);
961                 breaks[0] = '\0';
962                 if (stop) {
963                         strcat(breaks, stop);
964                 }
965                 if (suspend) {
966                         strcat(breaks, suspend);
967                 }
968                 if (restart) {
969                         strcat(breaks, restart);
970                 }
971         }
972         if (ast_channel_state(chan) != AST_STATE_UP) {
973                 res = ast_answer(chan);
974         }
975
976         if ((end = strchr(file, ':'))) {
977                 if (!strcasecmp(end, ":end")) {
978                         *end = '\0';
979                         end++;
980                 }
981         }
982
983         for (;;) {
984                 ast_stopstream(chan);
985                 res = ast_streamfile(chan, file, ast_channel_language(chan));
986                 if (!res) {
987                         if (pause_restart_point) {
988                                 ast_seekstream(ast_channel_stream(chan), pause_restart_point, SEEK_SET);
989                                 pause_restart_point = 0;
990                         }
991                         else if (end || offset < 0) {
992                                 if (offset == -8) {
993                                         offset = 0;
994                                 }
995                                 ast_verb(3, "ControlPlayback seek to offset %ld from end\n", offset);
996
997                                 ast_seekstream(ast_channel_stream(chan), offset, SEEK_END);
998                                 end = NULL;
999                                 offset = 0;
1000                         } else if (offset) {
1001                                 ast_verb(3, "ControlPlayback seek to offset %ld\n", offset);
1002                                 ast_seekstream(ast_channel_stream(chan), offset, SEEK_SET);
1003                                 offset = 0;
1004                         }
1005                         if (cb) {
1006                                 res = ast_waitstream_fr_w_cb(chan, breaks, fwd, rev, skipms, cb);
1007                         } else {
1008                                 res = ast_waitstream_fr(chan, breaks, fwd, rev, skipms);
1009                         }
1010                 }
1011
1012                 if (res < 1) {
1013                         break;
1014                 }
1015
1016                 /* We go at next loop if we got the restart char */
1017                 if ((restart && strchr(restart, res)) || res == AST_CONTROL_STREAM_RESTART) {
1018                         ast_debug(1, "we'll restart the stream here at next loop\n");
1019                         pause_restart_point = 0;
1020                         ast_test_suite_event_notify("PLAYBACK","Channel: %s\r\n"
1021                                 "Control: %s\r\n",
1022                                 ast_channel_name(chan),
1023                                 "Restart");
1024                         continue;
1025                 }
1026
1027                 if ((suspend && strchr(suspend, res)) || res == AST_CONTROL_STREAM_SUSPEND) {
1028                         pause_restart_point = ast_tellstream(ast_channel_stream(chan));
1029                         ast_test_suite_event_notify("PLAYBACK","Channel: %s\r\n"
1030                                 "Control: %s\r\n",
1031                                 ast_channel_name(chan),
1032                                 "Pause");
1033                         for (;;) {
1034                                 ast_stopstream(chan);
1035                                 if (!(res = ast_waitfordigit(chan, 1000))) {
1036                                         continue;
1037                                 } else if (res == -1 || (suspend && strchr(suspend, res)) || (stop && strchr(stop, res))
1038                                                 || res == AST_CONTROL_STREAM_SUSPEND || res == AST_CONTROL_STREAM_STOP) {
1039                                         break;
1040                                 }
1041                         }
1042                         if ((suspend && (res == *suspend)) || res == AST_CONTROL_STREAM_SUSPEND) {
1043                                 res = 0;
1044                                 ast_test_suite_event_notify("PLAYBACK","Channel: %s\r\n"
1045                                         "Control: %s\r\n",
1046                                         ast_channel_name(chan),
1047                                         "Unpause");
1048                                 continue;
1049                         }
1050                 }
1051
1052                 if (res == -1) {
1053                         break;
1054                 }
1055
1056                 /* if we get one of our stop chars, return it to the calling function */
1057                 if ((stop && strchr(stop, res)) || res == AST_CONTROL_STREAM_STOP) {
1058                         ast_test_suite_event_notify("PLAYBACK","Channel: %s\r\n"
1059                                 "Control: %s\r\n",
1060                                 ast_channel_name(chan),
1061                                 "Stop");
1062                         break;
1063                 }
1064         }
1065
1066         if (pause_restart_point) {
1067                 offset = pause_restart_point;
1068         } else {
1069                 if (ast_channel_stream(chan)) {
1070                         offset = ast_tellstream(ast_channel_stream(chan));
1071                 } else {
1072                         offset = -8;  /* indicate end of file */
1073                 }
1074         }
1075
1076         if (offsetms) {
1077                 *offsetms = offset / 8; /* samples --> ms ... XXX Assumes 8 kHz */
1078         }
1079
1080         ast_stopstream(chan);
1081
1082         return res;
1083 }
1084
1085 int ast_control_streamfile_w_cb(struct ast_channel *chan,
1086         const char *file,
1087         const char *fwd,
1088         const char *rev,
1089         const char *stop,
1090         const char *suspend,
1091         const char *restart,
1092         int skipms,
1093         long *offsetms,
1094         ast_waitstream_fr_cb cb)
1095 {
1096         return control_streamfile(chan, file, fwd, rev, stop, suspend, restart, skipms, offsetms, cb);
1097 }
1098
1099 int ast_control_streamfile(struct ast_channel *chan, const char *file,
1100                            const char *fwd, const char *rev,
1101                            const char *stop, const char *suspend,
1102                            const char *restart, int skipms, long *offsetms)
1103 {
1104         return control_streamfile(chan, file, fwd, rev, stop, suspend, restart, skipms, offsetms, NULL);
1105 }
1106
1107 int ast_play_and_wait(struct ast_channel *chan, const char *fn)
1108 {
1109         int d = 0;
1110
1111         ast_test_suite_event_notify("PLAYBACK", "Message: %s\r\nChannel: %s", fn, ast_channel_name(chan));
1112         if ((d = ast_streamfile(chan, fn, ast_channel_language(chan)))) {
1113                 return d;
1114         }
1115
1116         d = ast_waitstream(chan, AST_DIGIT_ANY);
1117
1118         ast_stopstream(chan);
1119
1120         return d;
1121 }
1122
1123 static int global_silence_threshold = 128;
1124 static int global_maxsilence = 0;
1125
1126 /*! Optionally play a sound file or a beep, then record audio and video from the channel.
1127  * \param chan Channel to playback to/record from.
1128  * \param playfile Filename of sound to play before recording begins.
1129  * \param recordfile Filename to record to.
1130  * \param maxtime Maximum length of recording (in seconds).
1131  * \param fmt Format(s) to record message in. Multiple formats may be specified by separating them with a '|'.
1132  * \param duration Where to store actual length of the recorded message (in milliseconds).
1133  * \param sound_duration Where to store the length of the recorded message (in milliseconds), minus any silence
1134  * \param beep Whether to play a beep before starting to record.
1135  * \param silencethreshold
1136  * \param maxsilence Length of silence that will end a recording (in milliseconds).
1137  * \param path Optional filesystem path to unlock.
1138  * \param prepend If true, prepend the recorded audio to an existing file and follow prepend mode recording rules
1139  * \param acceptdtmf DTMF digits that will end the recording.
1140  * \param canceldtmf DTMF digits that will cancel the recording.
1141  * \param skip_confirmation_sound If true, don't play auth-thankyou at end. Nice for custom recording prompts in apps.
1142  *
1143  * \retval -1 failure or hangup
1144  * \retval 'S' Recording ended from silence timeout
1145  * \retval 't' Recording ended from the message exceeding the maximum duration, or via DTMF in prepend mode
1146  * \retval dtmfchar Recording ended via the return value's DTMF character for either cancel or accept.
1147  */
1148 static int __ast_play_and_record(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, int *sound_duration, int beep, int silencethreshold, int maxsilence, const char *path, int prepend, const char *acceptdtmf, const char *canceldtmf, int skip_confirmation_sound)
1149 {
1150         int d = 0;
1151         char *fmts;
1152         char comment[256];
1153         int x, fmtcnt = 1, res = -1, outmsg = 0;
1154         struct ast_filestream *others[AST_MAX_FORMATS];
1155         char *sfmt[AST_MAX_FORMATS];
1156         char *stringp = NULL;
1157         time_t start, end;
1158         struct ast_dsp *sildet = NULL;   /* silence detector dsp */
1159         int totalsilence = 0;
1160         int dspsilence = 0;
1161         int olddspsilence = 0;
1162         struct ast_format rfmt;
1163         struct ast_silence_generator *silgen = NULL;
1164         char prependfile[PATH_MAX];
1165
1166         ast_format_clear(&rfmt);
1167         if (silencethreshold < 0) {
1168                 silencethreshold = global_silence_threshold;
1169         }
1170
1171         if (maxsilence < 0) {
1172                 maxsilence = global_maxsilence;
1173         }
1174
1175         /* barf if no pointer passed to store duration in */
1176         if (!duration) {
1177                 ast_log(LOG_WARNING, "Error play_and_record called without duration pointer\n");
1178                 return -1;
1179         }
1180
1181         ast_debug(1, "play_and_record: %s, %s, '%s'\n", playfile ? playfile : "<None>", recordfile, fmt);
1182         snprintf(comment, sizeof(comment), "Playing %s, Recording to: %s on %s\n", playfile ? playfile : "<None>", recordfile, ast_channel_name(chan));
1183
1184         if (playfile || beep) {
1185                 if (!beep) {
1186                         d = ast_play_and_wait(chan, playfile);
1187                 }
1188                 if (d > -1) {
1189                         d = ast_stream_and_wait(chan, "beep", "");
1190                 }
1191                 if (d < 0) {
1192                         return -1;
1193                 }
1194         }
1195
1196         if (prepend) {
1197                 ast_copy_string(prependfile, recordfile, sizeof(prependfile));
1198                 strncat(prependfile, "-prepend", sizeof(prependfile) - strlen(prependfile) - 1);
1199         }
1200
1201         fmts = ast_strdupa(fmt);
1202
1203         stringp = fmts;
1204         strsep(&stringp, "|");
1205         ast_debug(1, "Recording Formats: sfmts=%s\n", fmts);
1206         sfmt[0] = ast_strdupa(fmts);
1207
1208         while ((fmt = strsep(&stringp, "|"))) {
1209                 if (fmtcnt > AST_MAX_FORMATS - 1) {
1210                         ast_log(LOG_WARNING, "Please increase AST_MAX_FORMATS in file.h\n");
1211                         break;
1212                 }
1213                 sfmt[fmtcnt++] = ast_strdupa(fmt);
1214         }
1215
1216         end = start = time(NULL);  /* pre-initialize end to be same as start in case we never get into loop */
1217         for (x = 0; x < fmtcnt; x++) {
1218                 others[x] = ast_writefile(prepend ? prependfile : recordfile, sfmt[x], comment, O_TRUNC, 0, AST_FILE_MODE);
1219                 ast_verb(3, "x=%d, open writing:  %s format: %s, %p\n", x, prepend ? prependfile : recordfile, sfmt[x], others[x]);
1220
1221                 if (!others[x]) {
1222                         break;
1223                 }
1224         }
1225
1226         if (path) {
1227                 ast_unlock_path(path);
1228         }
1229
1230         if (maxsilence > 0) {
1231                 sildet = ast_dsp_new(); /* Create the silence detector */
1232                 if (!sildet) {
1233                         ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
1234                         return -1;
1235                 }
1236                 ast_dsp_set_threshold(sildet, silencethreshold);
1237                 ast_format_copy(&rfmt, ast_channel_readformat(chan));
1238                 res = ast_set_read_format_by_id(chan, AST_FORMAT_SLINEAR);
1239                 if (res < 0) {
1240                         ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
1241                         ast_dsp_free(sildet);
1242                         return -1;
1243                 }
1244         }
1245
1246         if (!prepend) {
1247                 /* Request a video update */
1248                 ast_indicate(chan, AST_CONTROL_VIDUPDATE);
1249
1250                 if (ast_opt_transmit_silence) {
1251                         silgen = ast_channel_start_silence_generator(chan);
1252                 }
1253         }
1254
1255         if (x == fmtcnt) {
1256                 /* Loop forever, writing the packets we read to the writer(s), until
1257                    we read a digit or get a hangup */
1258                 struct ast_frame *f;
1259                 for (;;) {
1260                         if (!(res = ast_waitfor(chan, 2000))) {
1261                                 ast_debug(1, "One waitfor failed, trying another\n");
1262                                 /* Try one more time in case of masq */
1263                                 if (!(res = ast_waitfor(chan, 2000))) {
1264                                         ast_log(LOG_WARNING, "No audio available on %s??\n", ast_channel_name(chan));
1265                                         res = -1;
1266                                 }
1267                         }
1268
1269                         if (res < 0) {
1270                                 f = NULL;
1271                                 break;
1272                         }
1273                         if (!(f = ast_read(chan))) {
1274                                 break;
1275                         }
1276                         if (f->frametype == AST_FRAME_VOICE) {
1277                                 /* write each format */
1278                                 for (x = 0; x < fmtcnt; x++) {
1279                                         if (prepend && !others[x]) {
1280                                                 break;
1281                                         }
1282                                         res = ast_writestream(others[x], f);
1283                                 }
1284
1285                                 /* Silence Detection */
1286                                 if (maxsilence > 0) {
1287                                         dspsilence = 0;
1288                                         ast_dsp_silence(sildet, f, &dspsilence);
1289                                         if (olddspsilence > dspsilence) {
1290                                                 totalsilence += olddspsilence;
1291                                         }
1292                                         olddspsilence = dspsilence;
1293
1294                                         if (dspsilence > maxsilence) {
1295                                                 /* Ended happily with silence */
1296                                                 ast_verb(3, "Recording automatically stopped after a silence of %d seconds\n", dspsilence/1000);
1297                                                 res = 'S';
1298                                                 outmsg = 2;
1299                                                 break;
1300                                         }
1301                                 }
1302                                 /* Exit on any error */
1303                                 if (res) {
1304                                         ast_log(LOG_WARNING, "Error writing frame\n");
1305                                         break;
1306                                 }
1307                         } else if (f->frametype == AST_FRAME_VIDEO) {
1308                                 /* Write only once */
1309                                 ast_writestream(others[0], f);
1310                         } else if (f->frametype == AST_FRAME_DTMF) {
1311                                 if (prepend) {
1312                                 /* stop recording with any digit */
1313                                         ast_verb(3, "User ended message by pressing %c\n", f->subclass.integer);
1314                                         res = 't';
1315                                         outmsg = 2;
1316                                         break;
1317                                 }
1318                                 if (strchr(acceptdtmf, f->subclass.integer)) {
1319                                         ast_verb(3, "User ended message by pressing %c\n", f->subclass.integer);
1320                                         res = f->subclass.integer;
1321                                         outmsg = 2;
1322                                         break;
1323                                 }
1324                                 if (strchr(canceldtmf, f->subclass.integer)) {
1325                                         ast_verb(3, "User cancelled message by pressing %c\n", f->subclass.integer);
1326                                         res = f->subclass.integer;
1327                                         outmsg = 0;
1328                                         break;
1329                                 }
1330                         }
1331                         if (maxtime) {
1332                                 end = time(NULL);
1333                                 if (maxtime < (end - start)) {
1334                                         ast_verb(3, "Took too long, cutting it short...\n");
1335                                         res = 't';
1336                                         outmsg = 2;
1337                                         break;
1338                                 }
1339                         }
1340                         ast_frfree(f);
1341                 }
1342                 if (!f) {
1343                         ast_verb(3, "User hung up\n");
1344                         res = -1;
1345                         outmsg = 1;
1346                 } else {
1347                         ast_frfree(f);
1348                 }
1349         } else {
1350                 ast_log(LOG_WARNING, "Error creating writestream '%s', format '%s'\n", recordfile, sfmt[x]);
1351         }
1352
1353         if (!prepend) {
1354                 if (silgen) {
1355                         ast_channel_stop_silence_generator(chan, silgen);
1356                 }
1357         }
1358
1359         /*!\note
1360          * Instead of asking how much time passed (end - start), calculate the number
1361          * of seconds of audio which actually went into the file.  This fixes a
1362          * problem where audio is stopped up on the network and never gets to us.
1363          *
1364          * Note that we still want to use the number of seconds passed for the max
1365          * message, otherwise we could get a situation where this stream is never
1366          * closed (which would create a resource leak).
1367          */
1368         *duration = others[0] ? ast_tellstream(others[0]) / 8000 : 0;
1369         if (sound_duration) {
1370                 *sound_duration = *duration;
1371         }
1372
1373         if (!prepend) {
1374                 /* Reduce duration by a total silence amount */
1375                 if (olddspsilence <= dspsilence) {
1376                         totalsilence += dspsilence;
1377                 }
1378
1379                 if (sound_duration) {
1380                         if (totalsilence > 0) {
1381                                 *sound_duration -= (totalsilence - 200) / 1000;
1382                         }
1383                         if (*sound_duration < 0) {
1384                                 *sound_duration = 0;
1385                         }
1386                 }
1387
1388                 if (dspsilence > 0) {
1389                         *duration -= (dspsilence - 200) / 1000;
1390                 }
1391
1392                 if (*duration < 0) {
1393                         *duration = 0;
1394                 }
1395
1396                 for (x = 0; x < fmtcnt; x++) {
1397                         if (!others[x]) {
1398                                 break;
1399                         }
1400                         /*!\note
1401                          * If we ended with silence, trim all but the first 200ms of silence
1402                          * off the recording.  However, if we ended with '#', we don't want
1403                          * to trim ANY part of the recording.
1404                          */
1405                         if (res > 0 && dspsilence) {
1406                                 /* rewind only the trailing silence */
1407                                 ast_stream_rewind(others[x], dspsilence - 200);
1408                         }
1409                         ast_truncstream(others[x]);
1410                         ast_closestream(others[x]);
1411                 }
1412         }
1413
1414         if (prepend && outmsg) {
1415                 struct ast_filestream *realfiles[AST_MAX_FORMATS];
1416                 struct ast_frame *fr;
1417
1418                 for (x = 0; x < fmtcnt; x++) {
1419                         snprintf(comment, sizeof(comment), "Opening the real file %s.%s\n", recordfile, sfmt[x]);
1420                         realfiles[x] = ast_readfile(recordfile, sfmt[x], comment, O_RDONLY, 0, 0);
1421                         if (!others[x] || !realfiles[x]) {
1422                                 break;
1423                         }
1424                         /*!\note Same logic as above. */
1425                         if (dspsilence) {
1426                                 ast_stream_rewind(others[x], dspsilence - 200);
1427                         }
1428                         ast_truncstream(others[x]);
1429                         /* add the original file too */
1430                         while ((fr = ast_readframe(realfiles[x]))) {
1431                                 ast_writestream(others[x], fr);
1432                                 ast_frfree(fr);
1433                         }
1434                         ast_closestream(others[x]);
1435                         ast_closestream(realfiles[x]);
1436                         ast_filerename(prependfile, recordfile, sfmt[x]);
1437                         ast_verb(4, "Recording Format: sfmts=%s, prependfile %s, recordfile %s\n", sfmt[x], prependfile, recordfile);
1438                         ast_filedelete(prependfile, sfmt[x]);
1439                 }
1440         }
1441         if (rfmt.id && ast_set_read_format(chan, &rfmt)) {
1442                 ast_log(LOG_WARNING, "Unable to restore format %s to channel '%s'\n", ast_getformatname(&rfmt), ast_channel_name(chan));
1443         }
1444         if ((outmsg == 2) && (!skip_confirmation_sound)) {
1445                 ast_stream_and_wait(chan, "auth-thankyou", "");
1446         }
1447         if (sildet) {
1448                 ast_dsp_free(sildet);
1449         }
1450         return res;
1451 }
1452
1453 static const char default_acceptdtmf[] = "#";
1454 static const char default_canceldtmf[] = "";
1455
1456 int ast_play_and_record_full(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, int *sound_duration, int silencethreshold, int maxsilence, const char *path, const char *acceptdtmf, const char *canceldtmf)
1457 {
1458         return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, sound_duration, 0, silencethreshold, maxsilence, path, 0, S_OR(acceptdtmf, default_acceptdtmf), S_OR(canceldtmf, default_canceldtmf), 0);
1459 }
1460
1461 int ast_play_and_record(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, int *sound_duration, int silencethreshold, int maxsilence, const char *path)
1462 {
1463         return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, sound_duration, 0, silencethreshold, maxsilence, path, 0, default_acceptdtmf, default_canceldtmf, 0);
1464 }
1465
1466 int ast_play_and_prepend(struct ast_channel *chan, char *playfile, char *recordfile, int maxtime, char *fmt, int *duration, int *sound_duration, int beep, int silencethreshold, int maxsilence)
1467 {
1468         return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, sound_duration, beep, silencethreshold, maxsilence, NULL, 1, default_acceptdtmf, default_canceldtmf, 1);
1469 }
1470
1471 /* Channel group core functions */
1472
1473 int ast_app_group_split_group(const char *data, char *group, int group_max, char *category, int category_max)
1474 {
1475         int res = 0;
1476         char tmp[256];
1477         char *grp = NULL, *cat = NULL;
1478
1479         if (!ast_strlen_zero(data)) {
1480                 ast_copy_string(tmp, data, sizeof(tmp));
1481                 grp = tmp;
1482                 if ((cat = strchr(tmp, '@'))) {
1483                         *cat++ = '\0';
1484                 }
1485         }
1486
1487         if (!ast_strlen_zero(grp)) {
1488                 ast_copy_string(group, grp, group_max);
1489         } else {
1490                 *group = '\0';
1491         }
1492
1493         if (!ast_strlen_zero(cat)) {
1494                 ast_copy_string(category, cat, category_max);
1495         }
1496
1497         return res;
1498 }
1499
1500 int ast_app_group_set_channel(struct ast_channel *chan, const char *data)
1501 {
1502         int res = 0;
1503         char group[80] = "", category[80] = "";
1504         struct ast_group_info *gi = NULL;
1505         size_t len = 0;
1506
1507         if (ast_app_group_split_group(data, group, sizeof(group), category, sizeof(category))) {
1508                 return -1;
1509         }
1510
1511         /* Calculate memory we will need if this is new */
1512         len = sizeof(*gi) + strlen(group) + 1;
1513         if (!ast_strlen_zero(category)) {
1514                 len += strlen(category) + 1;
1515         }
1516
1517         AST_RWLIST_WRLOCK(&groups);
1518         AST_RWLIST_TRAVERSE_SAFE_BEGIN(&groups, gi, group_list) {
1519                 if ((gi->chan == chan) && ((ast_strlen_zero(category) && ast_strlen_zero(gi->category)) || (!ast_strlen_zero(gi->category) && !strcasecmp(gi->category, category)))) {
1520                         AST_RWLIST_REMOVE_CURRENT(group_list);
1521                         free(gi);
1522                         break;
1523                 }
1524         }
1525         AST_RWLIST_TRAVERSE_SAFE_END;
1526
1527         if (ast_strlen_zero(group)) {
1528                 /* Enable unsetting the group */
1529         } else if ((gi = calloc(1, len))) {
1530                 gi->chan = chan;
1531                 gi->group = (char *) gi + sizeof(*gi);
1532                 strcpy(gi->group, group);
1533                 if (!ast_strlen_zero(category)) {
1534                         gi->category = (char *) gi + sizeof(*gi) + strlen(group) + 1;
1535                         strcpy(gi->category, category);
1536                 }
1537                 AST_RWLIST_INSERT_TAIL(&groups, gi, group_list);
1538         } else {
1539                 res = -1;
1540         }
1541
1542         AST_RWLIST_UNLOCK(&groups);
1543
1544         return res;
1545 }
1546
1547 int ast_app_group_get_count(const char *group, const char *category)
1548 {
1549         struct ast_group_info *gi = NULL;
1550         int count = 0;
1551
1552         if (ast_strlen_zero(group)) {
1553                 return 0;
1554         }
1555
1556         AST_RWLIST_RDLOCK(&groups);
1557         AST_RWLIST_TRAVERSE(&groups, gi, group_list) {
1558                 if (!strcasecmp(gi->group, group) && (ast_strlen_zero(category) || (!ast_strlen_zero(gi->category) && !strcasecmp(gi->category, category)))) {
1559                         count++;
1560                 }
1561         }
1562         AST_RWLIST_UNLOCK(&groups);
1563
1564         return count;
1565 }
1566
1567 int ast_app_group_match_get_count(const char *groupmatch, const char *category)
1568 {
1569         struct ast_group_info *gi = NULL;
1570         regex_t regexbuf_group;
1571         regex_t regexbuf_category;
1572         int count = 0;
1573
1574         if (ast_strlen_zero(groupmatch)) {
1575                 ast_log(LOG_NOTICE, "groupmatch empty\n");
1576                 return 0;
1577         }
1578
1579         /* if regex compilation fails, return zero matches */
1580         if (regcomp(&regexbuf_group, groupmatch, REG_EXTENDED | REG_NOSUB)) {
1581                 ast_log(LOG_ERROR, "Regex compile failed on: %s\n", groupmatch);
1582                 return 0;
1583         }
1584
1585         if (!ast_strlen_zero(category) && regcomp(&regexbuf_category, category, REG_EXTENDED | REG_NOSUB)) {
1586                 ast_log(LOG_ERROR, "Regex compile failed on: %s\n", category);
1587                 regfree(&regexbuf_group);
1588                 return 0;
1589         }
1590
1591         AST_RWLIST_RDLOCK(&groups);
1592         AST_RWLIST_TRAVERSE(&groups, gi, group_list) {
1593                 if (!regexec(&regexbuf_group, gi->group, 0, NULL, 0) && (ast_strlen_zero(category) || (!ast_strlen_zero(gi->category) && !regexec(&regexbuf_category, gi->category, 0, NULL, 0)))) {
1594                         count++;
1595                 }
1596         }
1597         AST_RWLIST_UNLOCK(&groups);
1598
1599         regfree(&regexbuf_group);
1600         if (!ast_strlen_zero(category)) {
1601                 regfree(&regexbuf_category);
1602         }
1603
1604         return count;
1605 }
1606
1607 int ast_app_group_update(struct ast_channel *old, struct ast_channel *new)
1608 {
1609         struct ast_group_info *gi = NULL;
1610
1611         AST_RWLIST_WRLOCK(&groups);
1612         AST_RWLIST_TRAVERSE_SAFE_BEGIN(&groups, gi, group_list) {
1613                 if (gi->chan == old) {
1614                         gi->chan = new;
1615                 } else if (gi->chan == new) {
1616                         AST_RWLIST_REMOVE_CURRENT(group_list);
1617                         ast_free(gi);
1618                 }
1619         }
1620         AST_RWLIST_TRAVERSE_SAFE_END;
1621         AST_RWLIST_UNLOCK(&groups);
1622
1623         return 0;
1624 }
1625
1626 int ast_app_group_discard(struct ast_channel *chan)
1627 {
1628         struct ast_group_info *gi = NULL;
1629
1630         AST_RWLIST_WRLOCK(&groups);
1631         AST_RWLIST_TRAVERSE_SAFE_BEGIN(&groups, gi, group_list) {
1632                 if (gi->chan == chan) {
1633                         AST_RWLIST_REMOVE_CURRENT(group_list);
1634                         ast_free(gi);
1635                 }
1636         }
1637         AST_RWLIST_TRAVERSE_SAFE_END;
1638         AST_RWLIST_UNLOCK(&groups);
1639
1640         return 0;
1641 }
1642
1643 int ast_app_group_list_wrlock(void)
1644 {
1645         return AST_RWLIST_WRLOCK(&groups);
1646 }
1647
1648 int ast_app_group_list_rdlock(void)
1649 {
1650         return AST_RWLIST_RDLOCK(&groups);
1651 }
1652
1653 struct ast_group_info *ast_app_group_list_head(void)
1654 {
1655         return AST_RWLIST_FIRST(&groups);
1656 }
1657
1658 int ast_app_group_list_unlock(void)
1659 {
1660         return AST_RWLIST_UNLOCK(&groups);
1661 }
1662
1663 #undef ast_app_separate_args
1664 unsigned int ast_app_separate_args(char *buf, char delim, char **array, int arraylen);
1665
1666 unsigned int __ast_app_separate_args(char *buf, char delim, int remove_chars, char **array, int arraylen)
1667 {
1668         int argc;
1669         char *scan, *wasdelim = NULL;
1670         int paren = 0, quote = 0, bracket = 0;
1671
1672         if (!array || !arraylen) {
1673                 return 0;
1674         }
1675
1676         memset(array, 0, arraylen * sizeof(*array));
1677
1678         if (!buf) {
1679                 return 0;
1680         }
1681
1682         scan = buf;
1683
1684         for (argc = 0; *scan && (argc < arraylen - 1); argc++) {
1685                 array[argc] = scan;
1686                 for (; *scan; scan++) {
1687                         if (*scan == '(') {
1688                                 paren++;
1689                         } else if (*scan == ')') {
1690                                 if (paren) {
1691                                         paren--;
1692                                 }
1693                         } else if (*scan == '[') {
1694                                 bracket++;
1695                         } else if (*scan == ']') {
1696                                 if (bracket) {
1697                                         bracket--;
1698                                 }
1699                         } else if (*scan == '"' && delim != '"') {
1700                                 quote = quote ? 0 : 1;
1701                                 if (remove_chars) {
1702                                         /* Remove quote character from argument */
1703                                         memmove(scan, scan + 1, strlen(scan));
1704                                         scan--;
1705                                 }
1706                         } else if (*scan == '\\') {
1707                                 if (remove_chars) {
1708                                         /* Literal character, don't parse */
1709                                         memmove(scan, scan + 1, strlen(scan));
1710                                 } else {
1711                                         scan++;
1712                                 }
1713                         } else if ((*scan == delim) && !paren && !quote && !bracket) {
1714                                 wasdelim = scan;
1715                                 *scan++ = '\0';
1716                                 break;
1717                         }
1718                 }
1719         }
1720
1721         /* If the last character in the original string was the delimiter, then
1722          * there is one additional argument. */
1723         if (*scan || (scan > buf && (scan - 1) == wasdelim)) {
1724                 array[argc++] = scan;
1725         }
1726
1727         return argc;
1728 }
1729
1730 /* ABI compatible function */
1731 unsigned int ast_app_separate_args(char *buf, char delim, char **array, int arraylen)
1732 {
1733         return __ast_app_separate_args(buf, delim, 1, array, arraylen);
1734 }
1735
1736 static enum AST_LOCK_RESULT ast_lock_path_lockfile(const char *path)
1737 {
1738         char *s;
1739         char *fs;
1740         int res;
1741         int fd;
1742         int lp = strlen(path);
1743         time_t start;
1744
1745         s = ast_alloca(lp + 10);
1746         fs = ast_alloca(lp + 20);
1747
1748         snprintf(fs, strlen(path) + 19, "%s/.lock-%08lx", path, ast_random());
1749         fd = open(fs, O_WRONLY | O_CREAT | O_EXCL, AST_FILE_MODE);
1750         if (fd < 0) {
1751                 ast_log(LOG_ERROR, "Unable to create lock file '%s': %s\n", path, strerror(errno));
1752                 return AST_LOCK_PATH_NOT_FOUND;
1753         }
1754         close(fd);
1755
1756         snprintf(s, strlen(path) + 9, "%s/.lock", path);
1757         start = time(NULL);
1758         while (((res = link(fs, s)) < 0) && (errno == EEXIST) && (time(NULL) - start < 5)) {
1759                 sched_yield();
1760         }
1761
1762         unlink(fs);
1763
1764         if (res) {
1765                 ast_log(LOG_WARNING, "Failed to lock path '%s': %s\n", path, strerror(errno));
1766                 return AST_LOCK_TIMEOUT;
1767         } else {
1768                 ast_debug(1, "Locked path '%s'\n", path);
1769                 return AST_LOCK_SUCCESS;
1770         }
1771 }
1772
1773 static int ast_unlock_path_lockfile(const char *path)
1774 {
1775         char *s;
1776         int res;
1777
1778         s = ast_alloca(strlen(path) + 10);
1779
1780         snprintf(s, strlen(path) + 9, "%s/%s", path, ".lock");
1781
1782         if ((res = unlink(s))) {
1783                 ast_log(LOG_ERROR, "Could not unlock path '%s': %s\n", path, strerror(errno));
1784         } else {
1785                 ast_debug(1, "Unlocked path '%s'\n", path);
1786         }
1787
1788         return res;
1789 }
1790
1791 struct path_lock {
1792         AST_LIST_ENTRY(path_lock) le;
1793         int fd;
1794         char *path;
1795 };
1796
1797 static AST_LIST_HEAD_STATIC(path_lock_list, path_lock);
1798
1799 static void path_lock_destroy(struct path_lock *obj)
1800 {
1801         if (obj->fd >= 0) {
1802                 close(obj->fd);
1803         }
1804         if (obj->path) {
1805                 free(obj->path);
1806         }
1807         free(obj);
1808 }
1809
1810 static enum AST_LOCK_RESULT ast_lock_path_flock(const char *path)
1811 {
1812         char *fs;
1813         int res;
1814         int fd;
1815         time_t start;
1816         struct path_lock *pl;
1817         struct stat st, ost;
1818
1819         fs = ast_alloca(strlen(path) + 20);
1820
1821         snprintf(fs, strlen(path) + 19, "%s/lock", path);
1822         if (lstat(fs, &st) == 0) {
1823                 if ((st.st_mode & S_IFMT) == S_IFLNK) {
1824                         ast_log(LOG_WARNING, "Unable to create lock file "
1825                                         "'%s': it's already a symbolic link\n",
1826                                         fs);
1827                         return AST_LOCK_FAILURE;
1828                 }
1829                 if (st.st_nlink > 1) {
1830                         ast_log(LOG_WARNING, "Unable to create lock file "
1831                                         "'%s': %u hard links exist\n",
1832                                         fs, (unsigned int) st.st_nlink);
1833                         return AST_LOCK_FAILURE;
1834                 }
1835         }
1836         if ((fd = open(fs, O_WRONLY | O_CREAT, 0600)) < 0) {
1837                 ast_log(LOG_WARNING, "Unable to create lock file '%s': %s\n",
1838                                 fs, strerror(errno));
1839                 return AST_LOCK_PATH_NOT_FOUND;
1840         }
1841         if (!(pl = ast_calloc(1, sizeof(*pl)))) {
1842                 /* We don't unlink the lock file here, on the possibility that
1843                  * someone else created it - better to leave a little mess
1844                  * than create a big one by destroying someone else's lock
1845                  * and causing something to be corrupted.
1846                  */
1847                 close(fd);
1848                 return AST_LOCK_FAILURE;
1849         }
1850         pl->fd = fd;
1851         pl->path = strdup(path);
1852
1853         time(&start);
1854         while (
1855                 #ifdef SOLARIS
1856                 ((res = fcntl(pl->fd, F_SETLK, fcntl(pl->fd, F_GETFL) | O_NONBLOCK)) < 0) &&
1857                 #else
1858                 ((res = flock(pl->fd, LOCK_EX | LOCK_NB)) < 0) &&
1859                 #endif
1860                         (errno == EWOULDBLOCK) &&
1861                         (time(NULL) - start < 5))
1862                 usleep(1000);
1863         if (res) {
1864                 ast_log(LOG_WARNING, "Failed to lock path '%s': %s\n",
1865                                 path, strerror(errno));
1866                 /* No unlinking of lock done, since we tried and failed to
1867                  * flock() it.
1868                  */
1869                 path_lock_destroy(pl);
1870                 return AST_LOCK_TIMEOUT;
1871         }
1872
1873         /* Check for the race where the file is recreated or deleted out from
1874          * underneath us.
1875          */
1876         if (lstat(fs, &st) != 0 && fstat(pl->fd, &ost) != 0 &&
1877                         st.st_dev != ost.st_dev &&
1878                         st.st_ino != ost.st_ino) {
1879                 ast_log(LOG_WARNING, "Unable to create lock file '%s': "
1880                                 "file changed underneath us\n", fs);
1881                 path_lock_destroy(pl);
1882                 return AST_LOCK_FAILURE;
1883         }
1884
1885         /* Success: file created, flocked, and is the one we started with */
1886         AST_LIST_LOCK(&path_lock_list);
1887         AST_LIST_INSERT_TAIL(&path_lock_list, pl, le);
1888         AST_LIST_UNLOCK(&path_lock_list);
1889
1890         ast_debug(1, "Locked path '%s'\n", path);
1891
1892         return AST_LOCK_SUCCESS;
1893 }
1894
1895 static int ast_unlock_path_flock(const char *path)
1896 {
1897         char *s;
1898         struct path_lock *p;
1899
1900         s = ast_alloca(strlen(path) + 20);
1901
1902         AST_LIST_LOCK(&path_lock_list);
1903         AST_LIST_TRAVERSE_SAFE_BEGIN(&path_lock_list, p, le) {
1904                 if (!strcmp(p->path, path)) {
1905                         AST_LIST_REMOVE_CURRENT(le);
1906                         break;
1907                 }
1908         }
1909         AST_LIST_TRAVERSE_SAFE_END;
1910         AST_LIST_UNLOCK(&path_lock_list);
1911
1912         if (p) {
1913                 snprintf(s, strlen(path) + 19, "%s/lock", path);
1914                 unlink(s);
1915                 path_lock_destroy(p);
1916                 ast_debug(1, "Unlocked path '%s'\n", path);
1917         } else {
1918                 ast_debug(1, "Failed to unlock path '%s': "
1919                                 "lock not found\n", path);
1920         }
1921
1922         return 0;
1923 }
1924
1925 void ast_set_lock_type(enum AST_LOCK_TYPE type)
1926 {
1927         ast_lock_type = type;
1928 }
1929
1930 enum AST_LOCK_RESULT ast_lock_path(const char *path)
1931 {
1932         enum AST_LOCK_RESULT r = AST_LOCK_FAILURE;
1933
1934         switch (ast_lock_type) {
1935         case AST_LOCK_TYPE_LOCKFILE:
1936                 r = ast_lock_path_lockfile(path);
1937                 break;
1938         case AST_LOCK_TYPE_FLOCK:
1939                 r = ast_lock_path_flock(path);
1940                 break;
1941         }
1942
1943         return r;
1944 }
1945
1946 int ast_unlock_path(const char *path)
1947 {
1948         int r = 0;
1949
1950         switch (ast_lock_type) {
1951         case AST_LOCK_TYPE_LOCKFILE:
1952                 r = ast_unlock_path_lockfile(path);
1953                 break;
1954         case AST_LOCK_TYPE_FLOCK:
1955                 r = ast_unlock_path_flock(path);
1956                 break;
1957         }
1958
1959         return r;
1960 }
1961
1962 int ast_record_review(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, const char *path)
1963 {
1964         int silencethreshold;
1965         int maxsilence = 0;
1966         int res = 0;
1967         int cmd = 0;
1968         int max_attempts = 3;
1969         int attempts = 0;
1970         int recorded = 0;
1971         int message_exists = 0;
1972         /* Note that urgent and private are for flagging messages as such in the future */
1973
1974         /* barf if no pointer passed to store duration in */
1975         if (!duration) {
1976                 ast_log(LOG_WARNING, "Error ast_record_review called without duration pointer\n");
1977                 return -1;
1978         }
1979
1980         cmd = '3';       /* Want to start by recording */
1981
1982         silencethreshold = ast_dsp_get_threshold_from_settings(THRESHOLD_SILENCE);
1983
1984         while ((cmd >= 0) && (cmd != 't')) {
1985                 switch (cmd) {
1986                 case '1':
1987                         if (!message_exists) {
1988                                 /* In this case, 1 is to record a message */
1989                                 cmd = '3';
1990                                 break;
1991                         } else {
1992                                 ast_stream_and_wait(chan, "vm-msgsaved", "");
1993                                 cmd = 't';
1994                                 return res;
1995                         }
1996                 case '2':
1997                         /* Review */
1998                         ast_verb(3, "Reviewing the recording\n");
1999                         cmd = ast_stream_and_wait(chan, recordfile, AST_DIGIT_ANY);
2000                         break;
2001                 case '3':
2002                         message_exists = 0;
2003                         /* Record */
2004                         ast_verb(3, "R%secording\n", recorded == 1 ? "e-r" : "");
2005                         recorded = 1;
2006                         if ((cmd = ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, NULL, silencethreshold, maxsilence, path)) == -1) {
2007                                 /* User has hung up, no options to give */
2008                                 return cmd;
2009                         }
2010                         if (cmd == '0') {
2011                                 break;
2012                         } else if (cmd == '*') {
2013                                 break;
2014                         } else {
2015                                 /* If all is well, a message exists */
2016                                 message_exists = 1;
2017                                 cmd = 0;
2018                         }
2019                         break;
2020                 case '4':
2021                 case '5':
2022                 case '6':
2023                 case '7':
2024                 case '8':
2025                 case '9':
2026                 case '*':
2027                 case '#':
2028                         cmd = ast_play_and_wait(chan, "vm-sorry");
2029                         break;
2030                 default:
2031                         if (message_exists) {
2032                                 cmd = ast_play_and_wait(chan, "vm-review");
2033                         } else {
2034                                 if (!(cmd = ast_play_and_wait(chan, "vm-torerecord"))) {
2035                                         cmd = ast_waitfordigit(chan, 600);
2036                                 }
2037                         }
2038
2039                         if (!cmd) {
2040                                 cmd = ast_waitfordigit(chan, 6000);
2041                         }
2042                         if (!cmd) {
2043                                 attempts++;
2044                         }
2045                         if (attempts > max_attempts) {
2046                                 cmd = 't';
2047                         }
2048                 }
2049         }
2050         if (cmd == 't') {
2051                 cmd = 0;
2052         }
2053         return cmd;
2054 }
2055
2056 #define RES_UPONE (1 << 16)
2057 #define RES_EXIT  (1 << 17)
2058 #define RES_REPEAT (1 << 18)
2059 #define RES_RESTART ((1 << 19) | RES_REPEAT)
2060
2061 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata);
2062
2063 static int ivr_dispatch(struct ast_channel *chan, struct ast_ivr_option *option, char *exten, void *cbdata)
2064 {
2065         int res;
2066         int (*ivr_func)(struct ast_channel *, void *);
2067         char *c;
2068         char *n;
2069
2070         switch (option->action) {
2071         case AST_ACTION_UPONE:
2072                 return RES_UPONE;
2073         case AST_ACTION_EXIT:
2074                 return RES_EXIT | (((unsigned long)(option->adata)) & 0xffff);
2075         case AST_ACTION_REPEAT:
2076                 return RES_REPEAT | (((unsigned long)(option->adata)) & 0xffff);
2077         case AST_ACTION_RESTART:
2078                 return RES_RESTART ;
2079         case AST_ACTION_NOOP:
2080                 return 0;
2081         case AST_ACTION_BACKGROUND:
2082                 res = ast_stream_and_wait(chan, (char *)option->adata, AST_DIGIT_ANY);
2083                 if (res < 0) {
2084                         ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
2085                         res = 0;
2086                 }
2087                 return res;
2088         case AST_ACTION_PLAYBACK:
2089                 res = ast_stream_and_wait(chan, (char *)option->adata, "");
2090                 if (res < 0) {
2091                         ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
2092                         res = 0;
2093                 }
2094                 return res;
2095         case AST_ACTION_MENU:
2096                 if ((res = ast_ivr_menu_run_internal(chan, (struct ast_ivr_menu *)option->adata, cbdata)) == -2) {
2097                         /* Do not pass entry errors back up, treat as though it was an "UPONE" */
2098                         res = 0;
2099                 }
2100                 return res;
2101         case AST_ACTION_WAITOPTION:
2102                 if (!(res = ast_waitfordigit(chan, ast_channel_pbx(chan) ? ast_channel_pbx(chan)->rtimeoutms : 10000))) {
2103                         return 't';
2104                 }
2105                 return res;
2106         case AST_ACTION_CALLBACK:
2107                 ivr_func = option->adata;
2108                 res = ivr_func(chan, cbdata);
2109                 return res;
2110         case AST_ACTION_TRANSFER:
2111                 res = ast_parseable_goto(chan, option->adata);
2112                 return 0;
2113         case AST_ACTION_PLAYLIST:
2114         case AST_ACTION_BACKLIST:
2115                 res = 0;
2116                 c = ast_strdupa(option->adata);
2117                 while ((n = strsep(&c, ";"))) {
2118                         if ((res = ast_stream_and_wait(chan, n,
2119                                         (option->action == AST_ACTION_BACKLIST) ? AST_DIGIT_ANY : ""))) {
2120                                 break;
2121                         }
2122                 }
2123                 ast_stopstream(chan);
2124                 return res;
2125         default:
2126                 ast_log(LOG_NOTICE, "Unknown dispatch function %d, ignoring!\n", option->action);
2127                 return 0;
2128         }
2129         return -1;
2130 }
2131
2132 static int option_exists(struct ast_ivr_menu *menu, char *option)
2133 {
2134         int x;
2135         for (x = 0; menu->options[x].option; x++) {
2136                 if (!strcasecmp(menu->options[x].option, option)) {
2137                         return x;
2138                 }
2139         }
2140         return -1;
2141 }
2142
2143 static int option_matchmore(struct ast_ivr_menu *menu, char *option)
2144 {
2145         int x;
2146         for (x = 0; menu->options[x].option; x++) {
2147                 if ((!strncasecmp(menu->options[x].option, option, strlen(option))) &&
2148                                 (menu->options[x].option[strlen(option)])) {
2149                         return x;
2150                 }
2151         }
2152         return -1;
2153 }
2154
2155 static int read_newoption(struct ast_channel *chan, struct ast_ivr_menu *menu, char *exten, int maxexten)
2156 {
2157         int res = 0;
2158         int ms;
2159         while (option_matchmore(menu, exten)) {
2160                 ms = ast_channel_pbx(chan) ? ast_channel_pbx(chan)->dtimeoutms : 5000;
2161                 if (strlen(exten) >= maxexten - 1) {
2162                         break;
2163                 }
2164                 if ((res = ast_waitfordigit(chan, ms)) < 1) {
2165                         break;
2166                 }
2167                 exten[strlen(exten) + 1] = '\0';
2168                 exten[strlen(exten)] = res;
2169         }
2170         return res > 0 ? 0 : res;
2171 }
2172
2173 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
2174 {
2175         /* Execute an IVR menu structure */
2176         int res = 0;
2177         int pos = 0;
2178         int retries = 0;
2179         char exten[AST_MAX_EXTENSION] = "s";
2180         if (option_exists(menu, "s") < 0) {
2181                 strcpy(exten, "g");
2182                 if (option_exists(menu, "g") < 0) {
2183                         ast_log(LOG_WARNING, "No 's' nor 'g' extension in menu '%s'!\n", menu->title);
2184                         return -1;
2185                 }
2186         }
2187         while (!res) {
2188                 while (menu->options[pos].option) {
2189                         if (!strcasecmp(menu->options[pos].option, exten)) {
2190                                 res = ivr_dispatch(chan, menu->options + pos, exten, cbdata);
2191                                 ast_debug(1, "IVR Dispatch of '%s' (pos %d) yields %d\n", exten, pos, res);
2192                                 if (res < 0) {
2193                                         break;
2194                                 } else if (res & RES_UPONE) {
2195                                         return 0;
2196                                 } else if (res & RES_EXIT) {
2197                                         return res;
2198                                 } else if (res & RES_REPEAT) {
2199                                         int maxretries = res & 0xffff;
2200                                         if ((res & RES_RESTART) == RES_RESTART) {
2201                                                 retries = 0;
2202                                         } else {
2203                                                 retries++;
2204                                         }
2205                                         if (!maxretries) {
2206                                                 maxretries = 3;
2207                                         }
2208                                         if ((maxretries > 0) && (retries >= maxretries)) {
2209                                                 ast_debug(1, "Max retries %d exceeded\n", maxretries);
2210                                                 return -2;
2211                                         } else {
2212                                                 if (option_exists(menu, "g") > -1) {
2213                                                         strcpy(exten, "g");
2214                                                 } else if (option_exists(menu, "s") > -1) {
2215                                                         strcpy(exten, "s");
2216                                                 }
2217                                         }
2218                                         pos = 0;
2219                                         continue;
2220                                 } else if (res && strchr(AST_DIGIT_ANY, res)) {
2221                                         ast_debug(1, "Got start of extension, %c\n", res);
2222                                         exten[1] = '\0';
2223                                         exten[0] = res;
2224                                         if ((res = read_newoption(chan, menu, exten, sizeof(exten)))) {
2225                                                 break;
2226                                         }
2227                                         if (option_exists(menu, exten) < 0) {
2228                                                 if (option_exists(menu, "i")) {
2229                                                         ast_debug(1, "Invalid extension entered, going to 'i'!\n");
2230                                                         strcpy(exten, "i");
2231                                                         pos = 0;
2232                                                         continue;
2233                                                 } else {
2234                                                         ast_debug(1, "Aborting on invalid entry, with no 'i' option!\n");
2235                                                         res = -2;
2236                                                         break;
2237                                                 }
2238                                         } else {
2239                                                 ast_debug(1, "New existing extension: %s\n", exten);
2240                                                 pos = 0;
2241                                                 continue;
2242                                         }
2243                                 }
2244                         }
2245                         pos++;
2246                 }
2247                 ast_debug(1, "Stopping option '%s', res is %d\n", exten, res);
2248                 pos = 0;
2249                 if (!strcasecmp(exten, "s")) {
2250                         strcpy(exten, "g");
2251                 } else {
2252                         break;
2253                 }
2254         }
2255         return res;
2256 }
2257
2258 int ast_ivr_menu_run(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
2259 {
2260         int res = ast_ivr_menu_run_internal(chan, menu, cbdata);
2261         /* Hide internal coding */
2262         return res > 0 ? 0 : res;
2263 }
2264
2265 char *ast_read_textfile(const char *filename)
2266 {
2267         int fd, count = 0, res;
2268         char *output = NULL;
2269         struct stat filesize;
2270
2271         if (stat(filename, &filesize) == -1) {
2272                 ast_log(LOG_WARNING, "Error can't stat %s\n", filename);
2273                 return NULL;
2274         }
2275
2276         count = filesize.st_size + 1;
2277
2278         if ((fd = open(filename, O_RDONLY)) < 0) {
2279                 ast_log(LOG_WARNING, "Cannot open file '%s' for reading: %s\n", filename, strerror(errno));
2280                 return NULL;
2281         }
2282
2283         if ((output = ast_malloc(count))) {
2284                 res = read(fd, output, count - 1);
2285                 if (res == count - 1) {
2286                         output[res] = '\0';
2287                 } else {
2288                         ast_log(LOG_WARNING, "Short read of %s (%d of %d): %s\n", filename, res, count - 1, strerror(errno));
2289                         ast_free(output);
2290                         output = NULL;
2291                 }
2292         }
2293
2294         close(fd);
2295
2296         return output;
2297 }
2298
2299 static int parse_options(const struct ast_app_option *options, void *_flags, char **args, char *optstr, int flaglen)
2300 {
2301         char *s, *arg;
2302         int curarg, res = 0;
2303         unsigned int argloc;
2304         struct ast_flags *flags = _flags;
2305         struct ast_flags64 *flags64 = _flags;
2306
2307         if (flaglen == 32) {
2308                 ast_clear_flag(flags, AST_FLAGS_ALL);
2309         } else {
2310                 flags64->flags = 0;
2311         }
2312
2313         if (!optstr) {
2314                 return 0;
2315         }
2316
2317         s = optstr;
2318         while (*s) {
2319                 curarg = *s++ & 0x7f;   /* the array (in app.h) has 128 entries */
2320                 argloc = options[curarg].arg_index;
2321                 if (*s == '(') {
2322                         int paren = 1, quote = 0;
2323                         int parsequotes = (s[1] == '"') ? 1 : 0;
2324
2325                         /* Has argument */
2326                         arg = ++s;
2327                         for (; *s; s++) {
2328                                 if (*s == '(' && !quote) {
2329                                         paren++;
2330                                 } else if (*s == ')' && !quote) {
2331                                         /* Count parentheses, unless they're within quotes (or backslashed, below) */
2332                                         paren--;
2333                                 } else if (*s == '"' && parsequotes) {
2334                                         /* Leave embedded quotes alone, unless they are the first character */
2335                                         quote = quote ? 0 : 1;
2336                                         ast_copy_string(s, s + 1, INT_MAX);
2337                                         s--;
2338                                 } else if (*s == '\\') {
2339                                         if (!quote) {
2340                                                 /* If a backslash is found outside of quotes, remove it */
2341                                                 ast_copy_string(s, s + 1, INT_MAX);
2342                                         } else if (quote && s[1] == '"') {
2343                                                 /* Backslash for a quote character within quotes, remove the backslash */
2344                                                 ast_copy_string(s, s + 1, INT_MAX);
2345                                         } else {
2346                                                 /* Backslash within quotes, keep both characters */
2347                                                 s++;
2348                                         }
2349                                 }
2350
2351                                 if (paren == 0) {
2352                                         break;
2353                                 }
2354                         }
2355                         /* This will find the closing paren we found above, or none, if the string ended before we found one. */
2356                         if ((s = strchr(s, ')'))) {
2357                                 if (argloc) {
2358                                         args[argloc - 1] = arg;
2359                                 }
2360                                 *s++ = '\0';
2361                         } else {
2362                                 ast_log(LOG_WARNING, "Missing closing parenthesis for argument '%c' in string '%s'\n", curarg, arg);
2363                                 res = -1;
2364                                 break;
2365                         }
2366                 } else if (argloc) {
2367                         args[argloc - 1] = "";
2368                 }
2369                 if (flaglen == 32) {
2370                         ast_set_flag(flags, options[curarg].flag);
2371                 } else {
2372                         ast_set_flag64(flags64, options[curarg].flag);
2373                 }
2374         }
2375
2376         return res;
2377 }
2378
2379 int ast_app_parse_options(const struct ast_app_option *options, struct ast_flags *flags, char **args, char *optstr)
2380 {
2381         return parse_options(options, flags, args, optstr, 32);
2382 }
2383
2384 int ast_app_parse_options64(const struct ast_app_option *options, struct ast_flags64 *flags, char **args, char *optstr)
2385 {
2386         return parse_options(options, flags, args, optstr, 64);
2387 }
2388
2389 void ast_app_options2str64(const struct ast_app_option *options, struct ast_flags64 *flags, char *buf, size_t len)
2390 {
2391         unsigned int i, found = 0;
2392         for (i = 32; i < 128 && found < len; i++) {
2393                 if (ast_test_flag64(flags, options[i].flag)) {
2394                         buf[found++] = i;
2395                 }
2396         }
2397         buf[found] = '\0';
2398 }
2399
2400 int ast_get_encoded_char(const char *stream, char *result, size_t *consumed)
2401 {
2402         int i;
2403         *consumed = 1;
2404         *result = 0;
2405         if (ast_strlen_zero(stream)) {
2406                 *consumed = 0;
2407                 return -1;
2408         }
2409
2410         if (*stream == '\\') {
2411                 *consumed = 2;
2412                 switch (*(stream + 1)) {
2413                 case 'n':
2414                         *result = '\n';
2415                         break;
2416                 case 'r':
2417                         *result = '\r';
2418                         break;
2419                 case 't':
2420                         *result = '\t';
2421                         break;
2422                 case 'x':
2423                         /* Hexadecimal */
2424                         if (strchr("0123456789ABCDEFabcdef", *(stream + 2)) && *(stream + 2) != '\0') {
2425                                 *consumed = 3;
2426                                 if (*(stream + 2) <= '9') {
2427                                         *result = *(stream + 2) - '0';
2428                                 } else if (*(stream + 2) <= 'F') {
2429                                         *result = *(stream + 2) - 'A' + 10;
2430                                 } else {
2431                                         *result = *(stream + 2) - 'a' + 10;
2432                                 }
2433                         } else {
2434                                 ast_log(LOG_ERROR, "Illegal character '%c' in hexadecimal string\n", *(stream + 2));
2435                                 return -1;
2436                         }
2437
2438                         if (strchr("0123456789ABCDEFabcdef", *(stream + 3)) && *(stream + 3) != '\0') {
2439                                 *consumed = 4;
2440                                 *result <<= 4;
2441                                 if (*(stream + 3) <= '9') {
2442                                         *result += *(stream + 3) - '0';
2443                                 } else if (*(stream + 3) <= 'F') {
2444                                         *result += *(stream + 3) - 'A' + 10;
2445                                 } else {
2446                                         *result += *(stream + 3) - 'a' + 10;
2447                                 }
2448                         }
2449                         break;
2450                 case '0':
2451                         /* Octal */
2452                         *consumed = 2;
2453                         for (i = 2; ; i++) {
2454                                 if (strchr("01234567", *(stream + i)) && *(stream + i) != '\0') {
2455                                         (*consumed)++;
2456                                         ast_debug(5, "result was %d, ", *result);
2457                                         *result <<= 3;
2458                                         *result += *(stream + i) - '0';
2459                                         ast_debug(5, "is now %d\n", *result);
2460                                 } else {
2461                                         break;
2462                                 }
2463                         }
2464                         break;
2465                 default:
2466                         *result = *(stream + 1);
2467                 }
2468         } else {
2469                 *result = *stream;
2470                 *consumed = 1;
2471         }
2472         return 0;
2473 }
2474
2475 char *ast_get_encoded_str(const char *stream, char *result, size_t result_size)
2476 {
2477         char *cur = result;
2478         size_t consumed;
2479
2480         while (cur < result + result_size - 1 && !ast_get_encoded_char(stream, cur, &consumed)) {
2481                 cur++;
2482                 stream += consumed;
2483         }
2484         *cur = '\0';
2485         return result;
2486 }
2487
2488 int ast_str_get_encoded_str(struct ast_str **str, int maxlen, const char *stream)
2489 {
2490         char next, *buf;
2491         size_t offset = 0;
2492         size_t consumed;
2493
2494         if (strchr(stream, '\\')) {
2495                 while (!ast_get_encoded_char(stream, &next, &consumed)) {
2496                         if (offset + 2 > ast_str_size(*str) && maxlen > -1) {
2497                                 ast_str_make_space(str, maxlen > 0 ? maxlen : (ast_str_size(*str) + 48) * 2 - 48);
2498                         }
2499                         if (offset + 2 > ast_str_size(*str)) {
2500                                 break;
2501                         }
2502                         buf = ast_str_buffer(*str);
2503                         buf[offset++] = next;
2504                         stream += consumed;
2505                 }
2506                 buf = ast_str_buffer(*str);
2507                 buf[offset++] = '\0';
2508                 ast_str_update(*str);
2509         } else {
2510                 ast_str_set(str, maxlen, "%s", stream);
2511         }
2512         return 0;
2513 }
2514
2515 void ast_close_fds_above_n(int n)
2516 {
2517         closefrom(n + 1);
2518 }
2519
2520 int ast_safe_fork(int stop_reaper)
2521 {
2522         sigset_t signal_set, old_set;
2523         int pid;
2524
2525         /* Don't let the default signal handler for children reap our status */
2526         if (stop_reaper) {
2527                 ast_replace_sigchld();
2528         }
2529
2530         sigfillset(&signal_set);
2531         pthread_sigmask(SIG_BLOCK, &signal_set, &old_set);
2532
2533         pid = fork();
2534
2535         if (pid != 0) {
2536                 /* Fork failed or parent */
2537                 pthread_sigmask(SIG_SETMASK, &old_set, NULL);
2538                 if (!stop_reaper && pid > 0) {
2539                         struct zombie *cur = ast_calloc(1, sizeof(*cur));
2540                         if (cur) {
2541                                 cur->pid = pid;
2542                                 AST_LIST_LOCK(&zombies);
2543                                 AST_LIST_INSERT_TAIL(&zombies, cur, list);
2544                                 AST_LIST_UNLOCK(&zombies);
2545                                 if (shaun_of_the_dead_thread == AST_PTHREADT_NULL) {
2546                                         if (ast_pthread_create_background(&shaun_of_the_dead_thread, NULL, shaun_of_the_dead, NULL)) {
2547                                                 ast_log(LOG_ERROR, "Shaun of the Dead wants to kill zombies, but can't?!!\n");
2548                                                 shaun_of_the_dead_thread = AST_PTHREADT_NULL;
2549                                         }
2550                                 }
2551                         }
2552                 }
2553                 return pid;
2554         } else {
2555                 /* Child */
2556 #ifdef HAVE_CAP
2557                 cap_t cap = cap_from_text("cap_net_admin-eip");
2558
2559                 if (cap_set_proc(cap)) {
2560                         ast_log(LOG_WARNING, "Unable to remove capabilities.\n");
2561                 }
2562                 cap_free(cap);
2563 #endif
2564
2565                 /* Before we unblock our signals, return our trapped signals back to the defaults */
2566                 signal(SIGHUP, SIG_DFL);
2567                 signal(SIGCHLD, SIG_DFL);
2568                 signal(SIGINT, SIG_DFL);
2569                 signal(SIGURG, SIG_DFL);
2570                 signal(SIGTERM, SIG_DFL);
2571                 signal(SIGPIPE, SIG_DFL);
2572                 signal(SIGXFSZ, SIG_DFL);
2573
2574                 /* unblock important signal handlers */
2575                 if (pthread_sigmask(SIG_UNBLOCK, &signal_set, NULL)) {
2576                         ast_log(LOG_WARNING, "unable to unblock signals: %s\n", strerror(errno));
2577                         _exit(1);
2578                 }
2579
2580                 return pid;
2581         }
2582 }
2583
2584 void ast_safe_fork_cleanup(void)
2585 {
2586         ast_unreplace_sigchld();
2587 }
2588
2589 int ast_app_parse_timelen(const char *timestr, int *result, enum ast_timelen unit)
2590 {
2591         int res;
2592         char u[10];
2593 #ifdef HAVE_LONG_DOUBLE_WIDER
2594         long double amount;
2595         #define FMT "%30Lf%9s"
2596 #else
2597         double amount;
2598         #define FMT "%30lf%9s"
2599 #endif
2600         if (!timestr) {
2601                 return -1;
2602         }
2603
2604         if ((res = sscanf(timestr, FMT, &amount, u)) == 0) {
2605 #undef FMT
2606                 return -1;
2607         } else if (res == 2) {
2608                 switch (u[0]) {
2609                 case 'h':
2610                 case 'H':
2611                         unit = TIMELEN_HOURS;
2612                         break;
2613                 case 's':
2614                 case 'S':
2615                         unit = TIMELEN_SECONDS;
2616                         break;
2617                 case 'm':
2618                 case 'M':
2619                         if (toupper(u[1]) == 'S') {
2620                                 unit = TIMELEN_MILLISECONDS;
2621                         } else if (u[1] == '\0') {
2622                                 unit = TIMELEN_MINUTES;
2623                         }
2624                         break;
2625                 }
2626         }
2627
2628         switch (unit) {
2629         case TIMELEN_HOURS:
2630                 amount *= 60;
2631                 /* fall-through */
2632         case TIMELEN_MINUTES:
2633                 amount *= 60;
2634                 /* fall-through */
2635         case TIMELEN_SECONDS:
2636                 amount *= 1000;
2637                 /* fall-through */
2638         case TIMELEN_MILLISECONDS:
2639                 ;
2640         }
2641         *result = amount > INT_MAX ? INT_MAX : (int) amount;
2642         return 0;
2643 }
2644
2645
2646
2647 static void mwi_state_dtor(void *obj)
2648 {
2649         struct stasis_mwi_state *mwi_state = obj;
2650         ast_string_field_free_memory(mwi_state);
2651 }
2652
2653 struct stasis_topic *stasis_mwi_topic_all(void)
2654 {
2655         return mwi_topic_all;
2656 }
2657
2658 struct stasis_caching_topic *stasis_mwi_topic_cached(void)
2659 {
2660         return mwi_topic_cached;
2661 }
2662
2663 struct stasis_topic *stasis_mwi_topic(const char *uniqueid)
2664 {
2665         return stasis_topic_pool_get_topic(mwi_topic_pool, uniqueid);
2666 }
2667
2668 int stasis_publish_mwi_state_full(
2669                         const char *mailbox,
2670                         const char *context,
2671                         int new_msgs,
2672                         int old_msgs,
2673                         struct ast_eid *eid)
2674 {
2675         RAII_VAR(struct stasis_mwi_state *, mwi_state, NULL, ao2_cleanup);
2676         RAII_VAR(struct stasis_message *, message, NULL, ao2_cleanup);
2677         struct ast_str *uniqueid = ast_str_alloca(AST_MAX_MAILBOX_UNIQUEID);
2678         struct stasis_topic *mailbox_specific_topic;
2679
2680         ast_assert(!ast_strlen_zero(mailbox));
2681         ast_assert(!ast_strlen_zero(context));
2682
2683         ast_str_set(&uniqueid, 0, "%s@%s", mailbox, context);
2684
2685         mwi_state = ao2_alloc(sizeof(*mwi_state), mwi_state_dtor);
2686         if (ast_string_field_init(mwi_state, 256)) {
2687                 return -1;
2688         }
2689
2690         ast_string_field_set(mwi_state, uniqueid, ast_str_buffer(uniqueid));
2691         ast_string_field_set(mwi_state, mailbox, mailbox);
2692         ast_string_field_set(mwi_state, context, context);
2693         mwi_state->new_msgs = new_msgs;
2694         mwi_state->old_msgs = old_msgs;
2695         if (eid) {
2696                 mwi_state->eid = *eid;
2697         } else {
2698                 ast_set_default_eid(&mwi_state->eid);
2699         }
2700
2701         message = stasis_message_create(stasis_mwi_state_type(), mwi_state);
2702
2703         mailbox_specific_topic = stasis_mwi_topic(ast_str_buffer(uniqueid));
2704         if (!mailbox_specific_topic) {
2705                 return -1;
2706         }
2707
2708         stasis_publish(mailbox_specific_topic, message);
2709
2710         return 0;
2711 }
2712
2713 static const char *mwi_state_get_id(struct stasis_message *message)
2714 {
2715         if (stasis_mwi_state_type() == stasis_message_type(message)) {
2716                 struct stasis_mwi_state *mwi_state = stasis_message_data(message);
2717                 return mwi_state->uniqueid;
2718         } else if (stasis_subscription_change_type() == stasis_message_type(message)) {
2719                 struct stasis_subscription_change *change = stasis_message_data(message);
2720                 return change->uniqueid;
2721         }
2722
2723         return NULL;
2724 }
2725
2726 static void app_exit(void)
2727 {
2728         ao2_cleanup(mwi_topic_all);
2729         mwi_topic_all = NULL;
2730         mwi_topic_cached = stasis_caching_unsubscribe_and_join(mwi_topic_cached);
2731         STASIS_MESSAGE_TYPE_CLEANUP(stasis_mwi_state_type);
2732         ao2_cleanup(mwi_topic_pool);
2733         mwi_topic_pool = NULL;
2734 }
2735
2736 int app_init(void)
2737 {
2738         if (STASIS_MESSAGE_TYPE_INIT(stasis_mwi_state_type) != 0) {
2739                 return -1;
2740         }
2741         mwi_topic_all = stasis_topic_create("stasis_mwi_topic");
2742         if (!mwi_topic_all) {
2743                 return -1;
2744         }
2745         mwi_topic_cached = stasis_caching_topic_create(mwi_topic_all, mwi_state_get_id);
2746         if (!mwi_topic_cached) {
2747                 return -1;
2748         }
2749         mwi_topic_pool = stasis_topic_pool_create(mwi_topic_all);
2750         if (!mwi_topic_pool) {
2751                 return -1;
2752         }
2753
2754         ast_register_atexit(app_exit);
2755         return 0;
2756 }
2757