app.c

   1 /*
   2  * Asterisk -- A telephony toolkit for Linux.
   3  *
   4  * Convenient Application Routines
   5  *
   6  * Copyright (C) 1999 - 2005, Digium, Inc.
   7  *
   8  * Mark Spencer <markster@digium.com>
   9  *
  10  * This program is free software, distributed under the terms of
  11  * the GNU General Public License
  12  */
  13
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <string.h>
  17 #include <sys/time.h>
  18 #include <signal.h>
  19 #include <errno.h>
  20 #include <unistd.h>
  21 #include <dirent.h>
  22 #include <sys/types.h>
  23 #include <sys/stat.h>
  24 #include <regex.h>
  25
  26 #include "asterisk.h"
  27
  28 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  29
  30 #include "asterisk/channel.h"
  31 #include "asterisk/pbx.h"
  32 #include "asterisk/file.h"
  33 #include "asterisk/app.h"
  34 #include "asterisk/dsp.h"
  35 #include "asterisk/logger.h"
  36 #include "asterisk/options.h"
  37 #include "asterisk/utils.h"
  38 #include "asterisk/lock.h"
  39 #include "asterisk/indications.h"
  40
  41 #define MAX_OTHER_FORMATS 10
  42
  43
  44 /*
  45 This function presents a dialtone and reads an extension into 'collect'
  46 which must be a pointer to a **pre-initilized** array of char having a
  47 size of 'size' suitable for writing to.  It will collect no more than the smaller
  48 of 'maxlen' or 'size' minus the original strlen() of collect digits.
  49 */
  50 int ast_app_dtget(struct ast_channel *chan, const char *context, char *collect, size_t size, int maxlen, int timeout)
  51 {
  52         struct tone_zone_sound *ts;
  53         int res=0, x=0;
  54
  55         if(maxlen > size)
  56                 maxlen = size;
  57
  58         if(!timeout && chan->pbx)
  59                 timeout = chan->pbx->dtimeout;
  60         else if(!timeout)
  61                 timeout = 5;
  62
  63         ts = ast_get_indication_tone(chan->zone,"dial");
  64         if (ts && ts->data[0])
  65                 res = ast_playtones_start(chan, 0, ts->data, 0);
  66         else
  67                 ast_log(LOG_NOTICE,"Huh....? no dial for indications?\n");
  68
  69         for (x = strlen(collect); strlen(collect) < maxlen; ) {
  70                 res = ast_waitfordigit(chan, timeout);
  71                 if (!ast_ignore_pattern(context, collect))
  72                         ast_playtones_stop(chan);
  73                 if (res < 1)
  74                         break;
  75                 collect[x++] = res;
  76                 if (!ast_matchmore_extension(chan, context, collect, 1, chan->cid.cid_num)) {
  77                         if (collect[x-1] == '#') {
  78                                 /* Not a valid extension, ending in #, assume the # was to finish dialing */
  79                                 collect[x-1] = '\0';
  80                         }
  81                         break;
  82                 }
  83         }
  84         if (res >= 0) {
  85                 if (ast_exists_extension(chan, context, collect, 1, chan->cid.cid_num))
  86                         res = 1;
  87                 else
  88                         res = 0;
  89         }
  90         return res;
  91 }
  92
  93
  94
  95 /* set timeout to 0 for "standard" timeouts. Set timeout to -1 for
  96    "ludicrous time" (essentially never times out) */
  97 int ast_app_getdata(struct ast_channel *c, char *prompt, char *s, int maxlen, int timeout)
  98 {
  99         int res,to,fto;
 100         /* XXX Merge with full version? XXX */
 101         if (maxlen)
 102                 s[0] = '\0';
 103         if (prompt) {
 104                 res = ast_streamfile(c, prompt, c->language);
 105                 if (res < 0)
 106                         return res;
 107         }
 108         fto = c->pbx ? c->pbx->rtimeout * 1000 : 6000;
 109         to = c->pbx ? c->pbx->dtimeout * 1000 : 2000;
 110
 111         if (timeout > 0)
 112                 fto = to = timeout;
 113         if (timeout < 0)
 114                 fto = to = 1000000000;
 115         res = ast_readstring(c, s, maxlen, to, fto, "#");
 116         return res;
 117 }
 118
 119
 120 int ast_app_getdata_full(struct ast_channel *c, char *prompt, char *s, int maxlen, int timeout, int audiofd, int ctrlfd)
 121 {
 122         int res,to,fto;
 123         if (prompt) {
 124                 res = ast_streamfile(c, prompt, c->language);
 125                 if (res < 0)
 126                         return res;
 127         }
 128         fto = 6000;
 129         to = 2000;
 130         if (timeout > 0)
 131                 fto = to = timeout;
 132         if (timeout < 0)
 133                 fto = to = 1000000000;
 134         res = ast_readstring_full(c, s, maxlen, to, fto, "#", audiofd, ctrlfd);
 135         return res;
 136 }
 137
 138 int ast_app_getvoice(struct ast_channel *c, char *dest, char *dstfmt, char *prompt, int silence, int maxsec)
 139 {
 140         int res;
 141         struct ast_filestream *writer;
 142         int rfmt;
 143         int totalms=0, total;
 144
 145         struct ast_frame *f;
 146         struct ast_dsp *sildet;
 147         /* Play prompt if requested */
 148         if (prompt) {
 149                 res = ast_streamfile(c, prompt, c->language);
 150                 if (res < 0)
 151                         return res;
 152                 res = ast_waitstream(c,"");
 153                 if (res < 0)
 154                         return res;
 155         }
 156         rfmt = c->readformat;
 157         res = ast_set_read_format(c, AST_FORMAT_SLINEAR);
 158         if (res < 0) {
 159                 ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
 160                 return -1;
 161         }
 162         sildet = ast_dsp_new();
 163         if (!sildet) {
 164                 ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
 165                 return -1;
 166         }
 167         writer = ast_writefile(dest, dstfmt, "Voice file", 0, 0, 0666);
 168         if (!writer) {
 169                 ast_log(LOG_WARNING, "Unable to open file '%s' in format '%s' for writing\n", dest, dstfmt);
 170                 ast_dsp_free(sildet);
 171                 return -1;
 172         }
 173         for(;;) {
 174                 if ((res = ast_waitfor(c, 2000)) < 0) {
 175                         ast_log(LOG_NOTICE, "Waitfor failed while recording file '%s' format '%s'\n", dest, dstfmt);
 176                         break;
 177                 }
 178                 if (res) {
 179                         f = ast_read(c);
 180                         if (!f) {
 181                                 ast_log(LOG_NOTICE, "Hungup while recording file '%s' format '%s'\n", dest, dstfmt);
 182                                 break;
 183                         }
 184                         if ((f->frametype == AST_FRAME_DTMF) && (f->subclass == '#')) {
 185                                 /* Ended happily with DTMF */
 186                                 ast_frfree(f);
 187                                 break;
 188                         } else if (f->frametype == AST_FRAME_VOICE) {
 189                                 ast_dsp_silence(sildet, f, &total);
 190                                 if (total > silence) {
 191                                         /* Ended happily with silence */
 192                                         ast_frfree(f);
 193                                         break;
 194                                 }
 195                                 totalms += f->samples / 8;
 196                                 if (totalms > maxsec * 1000) {
 197                                         /* Ended happily with too much stuff */
 198                                         ast_log(LOG_NOTICE, "Constraining voice on '%s' to %d seconds\n", c->name, maxsec);
 199                                         ast_frfree(f);
 200                                         break;
 201                                 }
 202                         }
 203                         ast_frfree(f);
 204                 }
 205         }
 206         res = ast_set_read_format(c, rfmt);
 207         if (res)
 208                 ast_log(LOG_WARNING, "Unable to restore read format on '%s'\n", c->name);
 209         ast_dsp_free(sildet);
 210         ast_closestream(writer);
 211         return 0;
 212 }
 213
 214 static int (*ast_has_voicemail_func)(const char *mailbox, const char *folder) = NULL;
 215 static int (*ast_messagecount_func)(const char *mailbox, int *newmsgs, int *oldmsgs) = NULL;
 216
 217 void ast_install_vm_functions(int (*has_voicemail_func)(const char *mailbox, const char *folder),
 218                               int (*messagecount_func)(const char *mailbox, int *newmsgs, int *oldmsgs))
 219 {
 220         ast_has_voicemail_func = has_voicemail_func;
 221         ast_messagecount_func = messagecount_func;
 222 }
 223
 224 void ast_uninstall_vm_functions(void)
 225 {
 226         ast_has_voicemail_func = NULL;
 227         ast_messagecount_func = NULL;
 228 }
 229
 230 int ast_app_has_voicemail(const char *mailbox, const char *folder)
 231 {
 232         static int warned = 0;
 233         if (ast_has_voicemail_func)
 234                 return ast_has_voicemail_func(mailbox, folder);
 235
 236         if ((option_verbose > 2) && !warned) {
 237                 ast_verbose(VERBOSE_PREFIX_3 "Message check requested for mailbox %s/folder %s but voicemail not loaded.\n", mailbox, folder ? folder : "INBOX");
 238                 warned++;
 239         }
 240         return 0;
 241 }
 242
 243
 244 int ast_app_messagecount(const char *mailbox, int *newmsgs, int *oldmsgs)
 245 {
 246         static int warned = 0;
 247         if (newmsgs)
 248                 *newmsgs = 0;
 249         if (oldmsgs)
 250                 *oldmsgs = 0;
 251         if (ast_messagecount_func)
 252                 return ast_messagecount_func(mailbox, newmsgs, oldmsgs);
 253
 254         if (!warned && (option_verbose > 2)) {
 255                 warned++;
 256                 ast_verbose(VERBOSE_PREFIX_3 "Message count requested for mailbox %s but voicemail not loaded.\n", mailbox);
 257         }
 258
 259         return 0;
 260 }
 261
 262 int ast_dtmf_stream(struct ast_channel *chan,struct ast_channel *peer,char *digits,int between)
 263 {
 264         char *ptr=NULL;
 265         int res=0;
 266         struct ast_frame f;
 267         if (!between)
 268                 between = 100;
 269
 270         if (peer)
 271                 res = ast_autoservice_start(peer);
 272
 273         if (!res) {
 274                 res = ast_waitfor(chan,100);
 275                 if (res > -1) {
 276                         for (ptr=digits; *ptr; ptr++) {
 277                                 if (*ptr == 'w') {
 278                                         res = ast_safe_sleep(chan, 500);
 279                                         if (res)
 280                                                 break;
 281                                         continue;
 282                                 }
 283                                 memset(&f, 0, sizeof(f));
 284                                 f.frametype = AST_FRAME_DTMF;
 285                                 f.subclass = *ptr;
 286                                 f.src = "ast_dtmf_stream";
 287                                 if (strchr("0123456789*#abcdABCD",*ptr)==NULL) {
 288                                         ast_log(LOG_WARNING, "Illegal DTMF character '%c' in string. (0-9*#aAbBcCdD allowed)\n",*ptr);
 289                                 } else {
 290                                         res = ast_write(chan, &f);
 291                                         if (res)
 292                                                 break;
 293                                         /* pause between digits */
 294                                         res = ast_safe_sleep(chan,between);
 295                                         if (res)
 296                                                 break;
 297                                 }
 298                         }
 299                 }
 300                 if (peer)
 301                         res = ast_autoservice_stop(peer);
 302         }
 303         return res;
 304 }
 305
 306 struct linear_state {
 307         int fd;
 308         int autoclose;
 309         int allowoverride;
 310         int origwfmt;
 311 };
 312
 313 static void linear_release(struct ast_channel *chan, void *params)
 314 {
 315         struct linear_state *ls = params;
 316         if (ls->origwfmt && ast_set_write_format(chan, ls->origwfmt)) {
 317                 ast_log(LOG_WARNING, "Unable to restore channel '%s' to format '%d'\n", chan->name, ls->origwfmt);
 318         }
 319         if (ls->autoclose)
 320                 close(ls->fd);
 321         free(params);
 322 }
 323
 324 static int linear_generator(struct ast_channel *chan, void *data, int len, int samples)
 325 {
 326         struct ast_frame f;
 327         short buf[2048 + AST_FRIENDLY_OFFSET / 2];
 328         struct linear_state *ls = data;
 329         int res;
 330         len = samples * 2;
 331         if (len > sizeof(buf) - AST_FRIENDLY_OFFSET) {
 332                 ast_log(LOG_WARNING, "Can't generate %d bytes of data!\n" ,len);
 333                 len = sizeof(buf) - AST_FRIENDLY_OFFSET;
 334         }
 335         memset(&f, 0, sizeof(f));
 336         res = read(ls->fd, buf + AST_FRIENDLY_OFFSET/2, len);
 337         if (res > 0) {
 338                 f.frametype = AST_FRAME_VOICE;
 339                 f.subclass = AST_FORMAT_SLINEAR;
 340                 f.data = buf + AST_FRIENDLY_OFFSET/2;
 341                 f.datalen = res;
 342                 f.samples = res / 2;
 343                 f.offset = AST_FRIENDLY_OFFSET;
 344                 ast_write(chan, &f);
 345                 if (res == len)
 346                         return 0;
 347         }
 348         return -1;
 349 }
 350
 351 static void *linear_alloc(struct ast_channel *chan, void *params)
 352 {
 353         struct linear_state *ls;
 354         /* In this case, params is already malloc'd */
 355         if (params) {
 356                 ls = params;
 357                 if (ls->allowoverride)
 358                         ast_set_flag(chan, AST_FLAG_WRITE_INT);
 359                 else
 360                         ast_clear_flag(chan, AST_FLAG_WRITE_INT);
 361                 ls->origwfmt = chan->writeformat;
 362                 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR)) {
 363                         ast_log(LOG_WARNING, "Unable to set '%s' to linear format (write)\n", chan->name);
 364                         free(ls);
 365                         ls = params = NULL;
 366                 }
 367         }
 368         return params;
 369 }
 370
 371 static struct ast_generator linearstream =
 372 {
 373         alloc: linear_alloc,
 374         release: linear_release,
 375         generate: linear_generator,
 376 };
 377
 378 int ast_linear_stream(struct ast_channel *chan, const char *filename, int fd, int allowoverride)
 379 {
 380         struct linear_state *lin;
 381         char tmpf[256] = "";
 382         int res = -1;
 383         int autoclose = 0;
 384         if (fd < 0) {
 385                 if (!filename || ast_strlen_zero(filename))
 386                         return -1;
 387                 autoclose = 1;
 388                 if (filename[0] == '/')
 389                         ast_copy_string(tmpf, filename, sizeof(tmpf));
 390                 else
 391                         snprintf(tmpf, sizeof(tmpf), "%s/%s/%s", (char *)ast_config_AST_VAR_DIR, "sounds", filename);
 392                 fd = open(tmpf, O_RDONLY);
 393                 if (fd < 0){
 394                         ast_log(LOG_WARNING, "Unable to open file '%s': %s\n", tmpf, strerror(errno));
 395                         return -1;
 396                 }
 397         }
 398         lin = malloc(sizeof(struct linear_state));
 399         if (lin) {
 400                 memset(lin, 0, sizeof(lin));
 401                 lin->fd = fd;
 402                 lin->allowoverride = allowoverride;
 403                 lin->autoclose = autoclose;
 404                 res = ast_activate_generator(chan, &linearstream, lin);
 405         }
 406         return res;
 407 }
 408
 409 int ast_control_streamfile(struct ast_channel *chan, const char *file, const char *fwd, const char *rev, const char *stop, const char *pause, int skipms)
 410 {
 411         long elapsed = 0,last_elapsed =0;
 412         char *breaks=NULL;
 413         char *end=NULL;
 414         int blen=2;
 415         int res=0;
 416
 417         if (stop)
 418                 blen += strlen(stop);
 419         if (pause)
 420                 blen += strlen(pause);
 421
 422         if (blen > 2) {
 423                 breaks = alloca(blen + 1);
 424                 breaks[0] = '\0';
 425                 strcat(breaks, stop);
 426                 strcat(breaks, pause);
 427         }
 428         if (chan->_state != AST_STATE_UP)
 429                 res = ast_answer(chan);
 430
 431         if (chan)
 432                 ast_stopstream(chan);
 433
 434
 435         if (file) {
 436                 if ((end = strchr(file,':'))) {
 437                         if (!strcasecmp(end, ":end")) {
 438                                 *end = '\0';
 439                                 end++;
 440                         }
 441                 }
 442         }
 443
 444         for (;;) {
 445                 struct timeval started = ast_tvnow();
 446
 447                 if (chan)
 448                         ast_stopstream(chan);
 449                 res = ast_streamfile(chan, file, chan->language);
 450                 if (!res) {
 451                         if (end) {
 452                                 ast_seekstream(chan->stream, 0, SEEK_END);
 453                                 end=NULL;
 454                         }
 455                         res = 1;
 456                         if (elapsed) {
 457                                 ast_stream_fastforward(chan->stream, elapsed);
 458                                 last_elapsed = elapsed - 200;
 459                         }
 460                         if (res)
 461                                 res = ast_waitstream_fr(chan, breaks, fwd, rev, skipms);
 462                         else
 463                                 break;
 464                 }
 465
 466                 if (res < 1)
 467                         break;
 468
 469                 if (pause != NULL && strchr(pause, res)) {
 470                         elapsed = ast_tvdiff_ms(ast_tvnow(), started) + last_elapsed;
 471                         for(;;) {
 472                                 if (chan)
 473                                         ast_stopstream(chan);
 474                                 res = ast_waitfordigit(chan, 1000);
 475                                 if (res == 0)
 476                                         continue;
 477                                 else if (res == -1 || strchr(pause, res) || (stop && strchr(stop, res)))
 478                                         break;
 479                         }
 480                         if (res == *pause) {
 481                                 res = 0;
 482                                 continue;
 483                         }
 484                 }
 485                 if (res == -1)
 486                         break;
 487
 488                 /* if we get one of our stop chars, return it to the calling function */
 489                 if (stop && strchr(stop, res)) {
 490                         /* res = 0; */
 491                         break;
 492                 }
 493         }
 494         if (chan)
 495                 ast_stopstream(chan);
 496
 497         return res;
 498 }
 499
 500 int ast_play_and_wait(struct ast_channel *chan, const char *fn)
 501 {
 502         int d;
 503         d = ast_streamfile(chan, fn, chan->language);
 504         if (d)
 505                 return d;
 506         d = ast_waitstream(chan, AST_DIGIT_ANY);
 507         ast_stopstream(chan);
 508         return d;
 509 }
 510
 511 static int global_silence_threshold = 128;
 512 static int global_maxsilence = 0;
 513
 514 int ast_play_and_record(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, int silencethreshold, int maxsilence, const char *path)
 515 {
 516         int d;
 517         char *fmts;
 518         char comment[256];
 519         int x, fmtcnt=1, res=-1,outmsg=0;
 520         struct ast_frame *f;
 521         struct ast_filestream *others[MAX_OTHER_FORMATS];
 522         char *sfmt[MAX_OTHER_FORMATS];
 523         char *stringp=NULL;
 524         time_t start, end;
 525         struct ast_dsp *sildet=NULL;    /* silence detector dsp */
 526         int totalsilence = 0;
 527         int dspsilence = 0;
 528         int gotsilence = 0;             /* did we timeout for silence? */
 529         int rfmt=0;
 530
 531         if (silencethreshold < 0)
 532                 silencethreshold = global_silence_threshold;
 533
 534         if (maxsilence < 0)
 535                 maxsilence = global_maxsilence;
 536
 537         /* barf if no pointer passed to store duration in */
 538         if (duration == NULL) {
 539                 ast_log(LOG_WARNING, "Error play_and_record called without duration pointer\n");
 540                 return -1;
 541         }
 542
 543         ast_log(LOG_DEBUG,"play_and_record: %s, %s, '%s'\n", playfile ? playfile : "<None>", recordfile, fmt);
 544         snprintf(comment,sizeof(comment),"Playing %s, Recording to: %s on %s\n", playfile ? playfile : "<None>", recordfile, chan->name);
 545
 546         if (playfile) {
 547                 d = ast_play_and_wait(chan, playfile);
 548                 if (d > -1)
 549                         d = ast_streamfile(chan, "beep",chan->language);
 550                 if (!d)
 551                         d = ast_waitstream(chan,"");
 552                 if (d < 0)
 553                         return -1;
 554         }
 555
 556         fmts = ast_strdupa(fmt);
 557
 558         stringp=fmts;
 559         strsep(&stringp, "|");
 560         ast_log(LOG_DEBUG,"Recording Formats: sfmts=%s\n", fmts);
 561         sfmt[0] = ast_strdupa(fmts);
 562
 563         while((fmt = strsep(&stringp, "|"))) {
 564                 if (fmtcnt > MAX_OTHER_FORMATS - 1) {
 565                         ast_log(LOG_WARNING, "Please increase MAX_OTHER_FORMATS in app_voicemail.c\n");
 566                         break;
 567                 }
 568                 sfmt[fmtcnt++] = ast_strdupa(fmt);
 569         }
 570
 571         time(&start);
 572         end=start;  /* pre-initialize end to be same as start in case we never get into loop */
 573         for (x=0;x<fmtcnt;x++) {
 574                 others[x] = ast_writefile(recordfile, sfmt[x], comment, O_TRUNC, 0, 0700);
 575                 ast_verbose( VERBOSE_PREFIX_3 "x=%d, open writing:  %s format: %s, %p\n", x, recordfile, sfmt[x], others[x]);
 576
 577                 if (!others[x]) {
 578                         break;
 579                 }
 580         }
 581
 582         if (path)
 583                 ast_unlock_path(path);
 584
 585
 586
 587         if (maxsilence > 0) {
 588                 sildet = ast_dsp_new(); /* Create the silence detector */
 589                 if (!sildet) {
 590                         ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
 591                         return -1;
 592                 }
 593                 ast_dsp_set_threshold(sildet, silencethreshold);
 594                 rfmt = chan->readformat;
 595                 res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
 596                 if (res < 0) {
 597                         ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
 598                         ast_dsp_free(sildet);
 599                         return -1;
 600                 }
 601         }
 602
 603         if (x == fmtcnt) {
 604         /* Loop forever, writing the packets we read to the writer(s), until
 605            we read a # or get a hangup */
 606                 f = NULL;
 607                 for(;;) {
 608                         res = ast_waitfor(chan, 2000);
 609                         if (!res) {
 610                                 ast_log(LOG_DEBUG, "One waitfor failed, trying another\n");
 611                                 /* Try one more time in case of masq */
 612                                 res = ast_waitfor(chan, 2000);
 613                                 if (!res) {
 614                                         ast_log(LOG_WARNING, "No audio available on %s??\n", chan->name);
 615                                         res = -1;
 616                                 }
 617                         }
 618
 619                         if (res < 0) {
 620                                 f = NULL;
 621                                 break;
 622                         }
 623                         f = ast_read(chan);
 624                         if (!f)
 625                                 break;
 626                         if (f->frametype == AST_FRAME_VOICE) {
 627                                 /* write each format */
 628                                 for (x=0;x<fmtcnt;x++) {
 629                                         res = ast_writestream(others[x], f);
 630                                 }
 631
 632                                 /* Silence Detection */
 633                                 if (maxsilence > 0) {
 634                                         dspsilence = 0;
 635                                         ast_dsp_silence(sildet, f, &dspsilence);
 636                                         if (dspsilence)
 637                                                 totalsilence = dspsilence;
 638                                         else
 639                                                 totalsilence = 0;
 640
 641                                         if (totalsilence > maxsilence) {
 642                                                 /* Ended happily with silence */
 643                                                 if (option_verbose > 2)
 644                                                         ast_verbose( VERBOSE_PREFIX_3 "Recording automatically stopped after a silence of %d seconds\n", totalsilence/1000);
 645                                                 ast_frfree(f);
 646                                                 gotsilence = 1;
 647                                                 outmsg=2;
 648                                                 break;
 649                                         }
 650                                 }
 651                                 /* Exit on any error */
 652                                 if (res) {
 653                                         ast_log(LOG_WARNING, "Error writing frame\n");
 654                                         ast_frfree(f);
 655                                         break;
 656                                 }
 657                         } else if (f->frametype == AST_FRAME_VIDEO) {
 658                                 /* Write only once */
 659                                 ast_writestream(others[0], f);
 660                         } else if (f->frametype == AST_FRAME_DTMF) {
 661                                 if (f->subclass == '#') {
 662                                         if (option_verbose > 2)
 663                                                 ast_verbose( VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
 664                                         res = '#';
 665                                         outmsg = 2;
 666                                         ast_frfree(f);
 667                                         break;
 668                                 }
 669                         }
 670                                 if (f->subclass == '0') {
 671                                 /* Check for a '0' during message recording also, in case caller wants operator */
 672                                         if (option_verbose > 2)
 673                                                 ast_verbose(VERBOSE_PREFIX_3 "User cancelled by pressing %c\n", f->subclass);
 674                                         res = '0';
 675                                         outmsg = 0;
 676                                         ast_frfree(f);
 677                                         break;
 678                                 }
 679                         if (maxtime) {
 680                                 time(&end);
 681                                 if (maxtime < (end - start)) {
 682                                         if (option_verbose > 2)
 683                                                 ast_verbose( VERBOSE_PREFIX_3 "Took too long, cutting it short...\n");
 684                                         outmsg = 2;
 685                                         res = 't';
 686                                         ast_frfree(f);
 687                                         break;
 688                                 }
 689                         }
 690                         ast_frfree(f);
 691                 }
 692                 if (end == start) time(&end);
 693                 if (!f) {
 694                         if (option_verbose > 2)
 695                                 ast_verbose( VERBOSE_PREFIX_3 "User hung up\n");
 696                         res = -1;
 697                         outmsg=1;
 698                 }
 699         } else {
 700                 ast_log(LOG_WARNING, "Error creating writestream '%s', format '%s'\n", recordfile, sfmt[x]);
 701         }
 702
 703         *duration = end - start;
 704
 705         for (x=0;x<fmtcnt;x++) {
 706                 if (!others[x])
 707                         break;
 708                 if (res > 0) {
 709                         if (totalsilence)
 710                                 ast_stream_rewind(others[x], totalsilence-200);
 711                         else
 712                                 ast_stream_rewind(others[x], 200);
 713                 }
 714                 ast_truncstream(others[x]);
 715                 ast_closestream(others[x]);
 716         }
 717         if (rfmt) {
 718                 if (ast_set_read_format(chan, rfmt)) {
 719                         ast_log(LOG_WARNING, "Unable to restore format %s to channel '%s'\n", ast_getformatname(rfmt), chan->name);
 720                 }
 721         }
 722         if (outmsg > 1) {
 723                 /* Let them know recording is stopped */
 724                 if(!ast_streamfile(chan, "auth-thankyou", chan->language))
 725                         ast_waitstream(chan, "");
 726         }
 727         if (sildet)
 728                 ast_dsp_free(sildet);
 729         return res;
 730 }
 731
 732 int ast_play_and_prepend(struct ast_channel *chan, char *playfile, char *recordfile, int maxtime, char *fmt, int *duration, int beep, int silencethreshold, int maxsilence)
 733 {
 734         int d = 0;
 735         char *fmts;
 736         char comment[256];
 737         int x, fmtcnt=1, res=-1,outmsg=0;
 738         struct ast_frame *f;
 739         struct ast_filestream *others[MAX_OTHER_FORMATS];
 740         struct ast_filestream *realfiles[MAX_OTHER_FORMATS];
 741         char *sfmt[MAX_OTHER_FORMATS];
 742         char *stringp=NULL;
 743         time_t start, end;
 744         struct ast_dsp *sildet;         /* silence detector dsp */
 745         int totalsilence = 0;
 746         int dspsilence = 0;
 747         int gotsilence = 0;             /* did we timeout for silence? */
 748         int rfmt=0;
 749         char prependfile[80];
 750
 751         if (silencethreshold < 0)
 752                 silencethreshold = global_silence_threshold;
 753
 754         if (maxsilence < 0)
 755                 maxsilence = global_maxsilence;
 756
 757         /* barf if no pointer passed to store duration in */
 758         if (duration == NULL) {
 759                 ast_log(LOG_WARNING, "Error play_and_prepend called without duration pointer\n");
 760                 return -1;
 761         }
 762
 763         ast_log(LOG_DEBUG,"play_and_prepend: %s, %s, '%s'\n", playfile ? playfile : "<None>", recordfile, fmt);
 764         snprintf(comment,sizeof(comment),"Playing %s, Recording to: %s on %s\n", playfile ? playfile : "<None>", recordfile, chan->name);
 765
 766         if (playfile || beep) {
 767                 if (!beep)
 768                         d = ast_play_and_wait(chan, playfile);
 769                 if (d > -1)
 770                         d = ast_streamfile(chan, "beep",chan->language);
 771                 if (!d)
 772                         d = ast_waitstream(chan,"");
 773                 if (d < 0)
 774                         return -1;
 775         }
 776         ast_copy_string(prependfile, recordfile, sizeof(prependfile));
 777         strncat(prependfile, "-prepend", sizeof(prependfile) - strlen(prependfile) - 1);
 778
 779         fmts = ast_strdupa(fmt);
 780
 781         stringp=fmts;
 782         strsep(&stringp, "|");
 783         ast_log(LOG_DEBUG,"Recording Formats: sfmts=%s\n", fmts);
 784         sfmt[0] = ast_strdupa(fmts);
 785
 786         while((fmt = strsep(&stringp, "|"))) {
 787                 if (fmtcnt > MAX_OTHER_FORMATS - 1) {
 788                         ast_log(LOG_WARNING, "Please increase MAX_OTHER_FORMATS in app_voicemail.c\n");
 789                         break;
 790                 }
 791                 sfmt[fmtcnt++] = ast_strdupa(fmt);
 792         }
 793
 794         time(&start);
 795         end=start;  /* pre-initialize end to be same as start in case we never get into loop */
 796         for (x=0;x<fmtcnt;x++) {
 797                 others[x] = ast_writefile(prependfile, sfmt[x], comment, O_TRUNC, 0, 0700);
 798                 ast_verbose( VERBOSE_PREFIX_3 "x=%d, open writing:  %s format: %s, %p\n", x, prependfile, sfmt[x], others[x]);
 799                 if (!others[x]) {
 800                         break;
 801                 }
 802         }
 803
 804         sildet = ast_dsp_new(); /* Create the silence detector */
 805         if (!sildet) {
 806                 ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
 807                 return -1;
 808         }
 809         ast_dsp_set_threshold(sildet, silencethreshold);
 810
 811         if (maxsilence > 0) {
 812                 rfmt = chan->readformat;
 813                 res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
 814                 if (res < 0) {
 815                         ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
 816                         return -1;
 817                 }
 818         }
 819
 820         if (x == fmtcnt) {
 821         /* Loop forever, writing the packets we read to the writer(s), until
 822            we read a # or get a hangup */
 823                 f = NULL;
 824                 for(;;) {
 825                         res = ast_waitfor(chan, 2000);
 826                         if (!res) {
 827                                 ast_log(LOG_DEBUG, "One waitfor failed, trying another\n");
 828                                 /* Try one more time in case of masq */
 829                                 res = ast_waitfor(chan, 2000);
 830                                 if (!res) {
 831                                         ast_log(LOG_WARNING, "No audio available on %s??\n", chan->name);
 832                                         res = -1;
 833                                 }
 834                         }
 835
 836                         if (res < 0) {
 837                                 f = NULL;
 838                                 break;
 839                         }
 840                         f = ast_read(chan);
 841                         if (!f)
 842                                 break;
 843                         if (f->frametype == AST_FRAME_VOICE) {
 844                                 /* write each format */
 845                                 for (x=0;x<fmtcnt;x++) {
 846                                         if (!others[x])
 847                                                 break;
 848                                         res = ast_writestream(others[x], f);
 849                                 }
 850
 851                                 /* Silence Detection */
 852                                 if (maxsilence > 0) {
 853                                         dspsilence = 0;
 854                                         ast_dsp_silence(sildet, f, &dspsilence);
 855                                         if (dspsilence)
 856                                                 totalsilence = dspsilence;
 857                                         else
 858                                                 totalsilence = 0;
 859
 860                                         if (totalsilence > maxsilence) {
 861                                         /* Ended happily with silence */
 862                                         if (option_verbose > 2)
 863                                                 ast_verbose( VERBOSE_PREFIX_3 "Recording automatically stopped after a silence of %d seconds\n", totalsilence/1000);
 864                                         ast_frfree(f);
 865                                         gotsilence = 1;
 866                                         outmsg=2;
 867                                         break;
 868                                         }
 869                                 }
 870                                 /* Exit on any error */
 871                                 if (res) {
 872                                         ast_log(LOG_WARNING, "Error writing frame\n");
 873                                         ast_frfree(f);
 874                                         break;
 875                                 }
 876                         } else if (f->frametype == AST_FRAME_VIDEO) {
 877                                 /* Write only once */
 878                                 ast_writestream(others[0], f);
 879                         } else if (f->frametype == AST_FRAME_DTMF) {
 880                                 /* stop recording with any digit */
 881                                 if (option_verbose > 2)
 882                                         ast_verbose( VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
 883                                 res = 't';
 884                                 outmsg = 2;
 885                                 ast_frfree(f);
 886                                 break;
 887                         }
 888                         if (maxtime) {
 889                                 time(&end);
 890                                 if (maxtime < (end - start)) {
 891                                         if (option_verbose > 2)
 892                                                 ast_verbose( VERBOSE_PREFIX_3 "Took too long, cutting it short...\n");
 893                                         res = 't';
 894                                         outmsg=2;
 895                                         ast_frfree(f);
 896                                         break;
 897                                 }
 898                         }
 899                         ast_frfree(f);
 900                 }
 901                 if (end == start) time(&end);
 902                 if (!f) {
 903                         if (option_verbose > 2)
 904                                 ast_verbose( VERBOSE_PREFIX_3 "User hung up\n");
 905                         res = -1;
 906                         outmsg=1;
 907 #if 0
 908                         /* delete all the prepend files */
 909                         for (x=0;x<fmtcnt;x++) {
 910                                 if (!others[x])
 911                                         break;
 912                                 ast_closestream(others[x]);
 913                                 ast_filedelete(prependfile, sfmt[x]);
 914                         }
 915 #endif
 916                 }
 917         } else {
 918                 ast_log(LOG_WARNING, "Error creating writestream '%s', format '%s'\n", prependfile, sfmt[x]);
 919         }
 920         *duration = end - start;
 921 #if 0
 922         if (outmsg > 1) {
 923 #else
 924         if (outmsg) {
 925 #endif
 926                 struct ast_frame *fr;
 927                 for (x=0;x<fmtcnt;x++) {
 928                         snprintf(comment, sizeof(comment), "Opening the real file %s.%s\n", recordfile, sfmt[x]);
 929                         realfiles[x] = ast_readfile(recordfile, sfmt[x], comment, O_RDONLY, 0, 0);
 930                         if (!others[x] || !realfiles[x])
 931                                 break;
 932                         if (totalsilence)
 933                                 ast_stream_rewind(others[x], totalsilence-200);
 934                         else
 935                                 ast_stream_rewind(others[x], 200);
 936                         ast_truncstream(others[x]);
 937                         /* add the original file too */
 938                         while ((fr = ast_readframe(realfiles[x]))) {
 939                                 ast_writestream(others[x],fr);
 940                         }
 941                         ast_closestream(others[x]);
 942                         ast_closestream(realfiles[x]);
 943                         ast_filerename(prependfile, recordfile, sfmt[x]);
 944 #if 0
 945                         ast_verbose("Recording Format: sfmts=%s, prependfile %s, recordfile %s\n", sfmt[x],prependfile,recordfile);
 946 #endif
 947                         ast_filedelete(prependfile, sfmt[x]);
 948                 }
 949         }
 950         if (rfmt) {
 951                 if (ast_set_read_format(chan, rfmt)) {
 952                         ast_log(LOG_WARNING, "Unable to restore format %s to channel '%s'\n", ast_getformatname(rfmt), chan->name);
 953                 }
 954         }
 955         if (outmsg) {
 956                 if (outmsg > 1) {
 957                         /* Let them know it worked */
 958                         ast_streamfile(chan, "auth-thankyou", chan->language);
 959                         ast_waitstream(chan, "");
 960                 }
 961         }
 962         return res;
 963 }
 964
 965 /* Channel group core functions */
 966
 967 int ast_app_group_split_group(char *data, char *group, int group_max, char *category, int category_max)
 968 {
 969         int res=0;
 970         char tmp[256] = "";
 971         char *grp=NULL, *cat=NULL;
 972
 973         if (data && !ast_strlen_zero(data)) {
 974                 ast_copy_string(tmp, data, sizeof(tmp));
 975                 grp = tmp;
 976                 cat = strchr(tmp, '@');
 977                 if (cat) {
 978                         *cat = '\0';
 979                         cat++;
 980                 }
 981         }
 982
 983         if (grp && !ast_strlen_zero(grp))
 984                 ast_copy_string(group, grp, group_max);
 985         else
 986                 res = -1;
 987
 988         if (cat)
 989                 snprintf(category, category_max, "%s_%s", GROUP_CATEGORY_PREFIX, cat);
 990         else
 991                 ast_copy_string(category, GROUP_CATEGORY_PREFIX, category_max);
 992
 993         return res;
 994 }
 995
 996 int ast_app_group_set_channel(struct ast_channel *chan, char *data)
 997 {
 998         int res=0;
 999         char group[80] = "";
1000         char category[80] = "";
1001
1002         if (!ast_app_group_split_group(data, group, sizeof(group), category, sizeof(category))) {
1003                 pbx_builtin_setvar_helper(chan, category, group);
1004         } else
1005                 res = -1;
1006
1007         return res;
1008 }
1009
1010 int ast_app_group_get_count(char *group, char *category)
1011 {
1012         struct ast_channel *chan;
1013         int count = 0;
1014         char *test;
1015         char cat[80] = "";
1016         char *s;
1017
1018         if (group == NULL || ast_strlen_zero(group))
1019                 return 0;
1020
1021         s = (category && !ast_strlen_zero(category)) ? category : GROUP_CATEGORY_PREFIX;
1022         ast_copy_string(cat, s, sizeof(cat));
1023
1024         chan = NULL;
1025         while ((chan = ast_channel_walk_locked(chan)) != NULL) {
1026                 test = pbx_builtin_getvar_helper(chan, cat);
1027                 if (test && !strcasecmp(test, group))
1028                         count++;
1029                 ast_mutex_unlock(&chan->lock);
1030         }
1031
1032         return count;
1033 }
1034
1035 int ast_app_group_match_get_count(char *groupmatch, char *category)
1036 {
1037         regex_t regexbuf;
1038         struct ast_channel *chan;
1039         int count = 0;
1040         char *test;
1041         char cat[80] = "";
1042         char *s;
1043
1044         if (!groupmatch || ast_strlen_zero(groupmatch))
1045                 return 0;
1046
1047         /* if regex compilation fails, return zero matches */
1048         if (regcomp(&regexbuf, groupmatch, REG_EXTENDED | REG_NOSUB))
1049                 return 0;
1050
1051         s = (category && !ast_strlen_zero(category)) ? category : GROUP_CATEGORY_PREFIX;
1052         ast_copy_string(cat, s, sizeof(cat));
1053
1054         chan = NULL;
1055         while ((chan = ast_channel_walk_locked(chan)) != NULL) {
1056                 test = pbx_builtin_getvar_helper(chan, cat);
1057                 if (test && !regexec(&regexbuf, test, 0, NULL, 0))
1058                         count++;
1059                 ast_mutex_unlock(&chan->lock);
1060         }
1061
1062         regfree(&regexbuf);
1063
1064         return count;
1065 }
1066
1067 int ast_separate_app_args(char *buf, char delim, char **array, int arraylen)
1068 {
1069         int argc;
1070         char *scan;
1071         int paren = 0;
1072
1073         if (!buf || !array || !arraylen)
1074                 return 0;
1075
1076         memset(array, 0, arraylen * sizeof(*array));
1077
1078         scan = buf;
1079
1080         for (argc = 0; *scan && (argc < arraylen - 1); argc++) {
1081                 array[argc] = scan;
1082                 for (; *scan; scan++) {
1083                         if (*scan == '(')
1084                                 paren++;
1085                         else if (*scan == ')') {
1086                                 if (paren)
1087                                         paren--;
1088                         } else if ((*scan == delim) && !paren) {
1089                                 *scan++ = '\0';
1090                                 break;
1091                         }
1092                 }
1093         }
1094
1095         if (*scan)
1096                 array[argc++] = scan;
1097
1098         return argc;
1099 }
1100
1101 enum AST_LOCK_RESULT ast_lock_path(const char *path)
1102 {
1103         char *s;
1104         char *fs;
1105         int res;
1106         int fd;
1107         time_t start;
1108
1109         s = alloca(strlen(path) + 10);
1110         fs = alloca(strlen(path) + 20);
1111
1112         if (!fs || !s) {
1113                 ast_log(LOG_WARNING, "Out of memory!\n");
1114                 return AST_LOCK_FAILURE;
1115         }
1116
1117         snprintf(fs, strlen(path) + 19, "%s/.lock-%08x", path, rand());
1118         fd = open(fs, O_WRONLY | O_CREAT | O_EXCL, 0600);
1119         if (fd < 0) {
1120                 fprintf(stderr, "Unable to create lock file '%s': %s\n", path, strerror(errno));
1121                 return AST_LOCK_PATH_NOT_FOUND;
1122         }
1123         close(fd);
1124
1125         snprintf(s, strlen(path) + 9, "%s/.lock", path);
1126         time(&start);
1127         while (((res = link(fs, s)) < 0) && (errno == EEXIST) && (time(NULL) - start < 5))
1128                 usleep(1);
1129         if (res) {
1130                 ast_log(LOG_WARNING, "Failed to lock path '%s': %s\n", path, strerror(errno));
1131                 return AST_LOCK_TIMEOUT;
1132         } else {
1133                 unlink(fs);
1134                 ast_log(LOG_DEBUG, "Locked path '%s'\n", path);
1135                 return AST_LOCK_SUCCESS;
1136         }
1137 }
1138
1139 int ast_unlock_path(const char *path)
1140 {
1141         char *s;
1142         s = alloca(strlen(path) + 10);
1143         if (!s)
1144                 return -1;
1145         snprintf(s, strlen(path) + 9, "%s/%s", path, ".lock");
1146         ast_log(LOG_DEBUG, "Unlocked path '%s'\n", path);
1147         return unlink(s);
1148 }
1149
1150 int ast_record_review(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, const char *path)
1151 {
1152         int silencethreshold = 128;
1153         int maxsilence=0;
1154         int res = 0;
1155         int cmd = 0;
1156         int max_attempts = 3;
1157         int attempts = 0;
1158         int recorded = 0;
1159         int message_exists = 0;
1160         /* Note that urgent and private are for flagging messages as such in the future */
1161
1162         /* barf if no pointer passed to store duration in */
1163         if (duration == NULL) {
1164                 ast_log(LOG_WARNING, "Error ast_record_review called without duration pointer\n");
1165                 return -1;
1166         }
1167
1168         cmd = '3';       /* Want to start by recording */
1169
1170         while ((cmd >= 0) && (cmd != 't')) {
1171                 switch (cmd) {
1172                 case '1':
1173                         if (!message_exists) {
1174                                 /* In this case, 1 is to record a message */
1175                                 cmd = '3';
1176                                 break;
1177                         } else {
1178                                 ast_streamfile(chan, "vm-msgsaved", chan->language);
1179                                 ast_waitstream(chan, "");
1180                                 cmd = 't';
1181                                 return res;
1182                         }
1183                 case '2':
1184                         /* Review */
1185                         ast_verbose(VERBOSE_PREFIX_3 "Reviewing the recording\n");
1186                         ast_streamfile(chan, recordfile, chan->language);
1187                         cmd = ast_waitstream(chan, AST_DIGIT_ANY);
1188                         break;
1189                 case '3':
1190                         message_exists = 0;
1191                         /* Record */
1192                         if (recorded == 1)
1193                                 ast_verbose(VERBOSE_PREFIX_3 "Re-recording\n");
1194                         else
1195                                 ast_verbose(VERBOSE_PREFIX_3 "Recording\n");
1196                         recorded = 1;
1197                         cmd = ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, silencethreshold, maxsilence, path);
1198                         if (cmd == -1) {
1199                         /* User has hung up, no options to give */
1200                                 return cmd;
1201                         }
1202                         if (cmd == '0') {
1203                                 break;
1204                         } else if (cmd == '*') {
1205                                 break;
1206                         }
1207                         else {
1208                                 /* If all is well, a message exists */
1209                                 message_exists = 1;
1210                                 cmd = 0;
1211                         }
1212                         break;
1213                 case '4':
1214                 case '5':
1215                 case '6':
1216                 case '7':
1217                 case '8':
1218                 case '9':
1219                 case '*':
1220                 case '#':
1221                         cmd = ast_play_and_wait(chan, "vm-sorry");
1222                         break;
1223                 default:
1224                         if (message_exists) {
1225                                 cmd = ast_play_and_wait(chan, "vm-review");
1226                         }
1227                         else {
1228                                 cmd = ast_play_and_wait(chan, "vm-torerecord");
1229                                 if (!cmd)
1230                                         cmd = ast_waitfordigit(chan, 600);
1231                         }
1232
1233                         if (!cmd)
1234                                 cmd = ast_waitfordigit(chan, 6000);
1235                         if (!cmd) {
1236                                 attempts++;
1237                         }
1238                         if (attempts > max_attempts) {
1239                                 cmd = 't';
1240                         }
1241                 }
1242         }
1243         if (cmd == 't')
1244                 cmd = 0;
1245         return cmd;
1246 }
1247
1248 #define RES_UPONE (1 << 16)
1249 #define RES_EXIT  (1 << 17)
1250 #define RES_REPEAT (1 << 18)
1251 #define RES_RESTART ((1 << 19) | RES_REPEAT)
1252
1253 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata);
1254 static int ivr_dispatch(struct ast_channel *chan, struct ast_ivr_option *option, char *exten, void *cbdata)
1255 {
1256         int res;
1257         int (*ivr_func)(struct ast_channel *, void *);
1258         char *c;
1259         char *n;
1260
1261         switch(option->action) {
1262         case AST_ACTION_UPONE:
1263                 return RES_UPONE;
1264         case AST_ACTION_EXIT:
1265                 return RES_EXIT | (((unsigned long)(option->adata)) & 0xffff);
1266         case AST_ACTION_REPEAT:
1267                 return RES_REPEAT | (((unsigned long)(option->adata)) & 0xffff);
1268         case AST_ACTION_RESTART:
1269                 return RES_RESTART ;
1270         case AST_ACTION_NOOP:
1271                 return 0;
1272         case AST_ACTION_BACKGROUND:
1273                 res = ast_streamfile(chan, (char *)option->adata, chan->language);
1274                 if (!res) {
1275                         res = ast_waitstream(chan, AST_DIGIT_ANY);
1276                 } else {
1277                         ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
1278                         res = 0;
1279                 }
1280                 return res;
1281         case AST_ACTION_PLAYBACK:
1282                 res = ast_streamfile(chan, (char *)option->adata, chan->language);
1283                 if (!res) {
1284                         res = ast_waitstream(chan, "");
1285                 } else {
1286                         ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
1287                         res = 0;
1288                 }
1289                 return res;
1290         case AST_ACTION_MENU:
1291                 res = ast_ivr_menu_run_internal(chan, (struct ast_ivr_menu *)option->adata, cbdata);
1292                 /* Do not pass entry errors back up, treaat ast though ti was an "UPONE" */
1293                 if (res == -2)
1294                         res = 0;
1295                 return res;
1296         case AST_ACTION_WAITOPTION:
1297                 res = ast_waitfordigit(chan, 1000 * (chan->pbx ? chan->pbx->rtimeout : 10));
1298                 if (!res)
1299                         return 't';
1300                 return res;
1301         case AST_ACTION_CALLBACK:
1302                 ivr_func = option->adata;
1303                 res = ivr_func(chan, cbdata);
1304                 return res;
1305         case AST_ACTION_TRANSFER:
1306                 res = ast_parseable_goto(chan, option->adata);
1307                 return 0;
1308         case AST_ACTION_PLAYLIST:
1309         case AST_ACTION_BACKLIST:
1310                 res = 0;
1311                 c = ast_strdupa(option->adata);
1312                 if (c) {
1313                         while((n = strsep(&c, ";")))
1314                                 if ((res = ast_streamfile(chan, n, chan->language)) || (res = ast_waitstream(chan, (option->action == AST_ACTION_BACKLIST) ? AST_DIGIT_ANY : "")))
1315                                         break;
1316                         ast_stopstream(chan);
1317                 }
1318                 return res;
1319         default:
1320                 ast_log(LOG_NOTICE, "Unknown dispatch function %d, ignoring!\n", option->action);
1321                 return 0;
1322         };
1323         return -1;
1324 }
1325
1326 static int option_exists(struct ast_ivr_menu *menu, char *option)
1327 {
1328         int x;
1329         for (x=0;menu->options[x].option;x++)
1330                 if (!strcasecmp(menu->options[x].option, option))
1331                         return x;
1332         return -1;
1333 }
1334
1335 static int option_matchmore(struct ast_ivr_menu *menu, char *option)
1336 {
1337         int x;
1338         for (x=0;menu->options[x].option;x++)
1339                 if ((!strncasecmp(menu->options[x].option, option, strlen(option))) &&
1340                                 (menu->options[x].option[strlen(option)]))
1341                         return x;
1342         return -1;
1343 }
1344
1345 static int read_newoption(struct ast_channel *chan, struct ast_ivr_menu *menu, char *exten, int maxexten)
1346 {
1347         int res=0;
1348         int ms;
1349         while(option_matchmore(menu, exten)) {
1350                 ms = chan->pbx ? chan->pbx->dtimeout : 5000;
1351                 if (strlen(exten) >= maxexten - 1)
1352                         break;
1353                 res = ast_waitfordigit(chan, ms);
1354                 if (res < 1)
1355                         break;
1356                 exten[strlen(exten) + 1] = '\0';
1357                 exten[strlen(exten)] = res;
1358         }
1359         return res > 0 ? 0 : res;
1360 }
1361
1362 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
1363 {
1364         /* Execute an IVR menu structure */
1365         int res=0;
1366         int pos = 0;
1367         int retries = 0;
1368         char exten[AST_MAX_EXTENSION] = "s";
1369         if (option_exists(menu, "s") < 0) {
1370                 strcpy(exten, "g");
1371                 if (option_exists(menu, "g") < 0) {
1372                         ast_log(LOG_WARNING, "No 's' nor 'g' extension in menu '%s'!\n", menu->title);
1373                         return -1;
1374                 }
1375         }
1376         while(!res) {
1377                 while(menu->options[pos].option) {
1378                         if (!strcasecmp(menu->options[pos].option, exten)) {
1379                                 res = ivr_dispatch(chan, menu->options + pos, exten, cbdata);
1380                                 ast_log(LOG_DEBUG, "IVR Dispatch of '%s' (pos %d) yields %d\n", exten, pos, res);
1381                                 if (res < 0)
1382                                         break;
1383                                 else if (res & RES_UPONE)
1384                                         return 0;
1385                                 else if (res & RES_EXIT)
1386                                         return res;
1387                                 else if (res & RES_REPEAT) {
1388                                         int maxretries = res & 0xffff;
1389                                         if ((res & RES_RESTART) == RES_RESTART) {
1390                                                 retries = 0;
1391                                         } else
1392                                                 retries++;
1393                                         if (!maxretries)
1394                                                 maxretries = 3;
1395                                         if ((maxretries > 0) && (retries >= maxretries)) {
1396                                                 ast_log(LOG_DEBUG, "Max retries %d exceeded\n", maxretries);
1397                                                 return -2;
1398                                         } else {
1399                                                 if (option_exists(menu, "g") > -1)
1400                                                         strcpy(exten, "g");
1401                                                 else if (option_exists(menu, "s") > -1)
1402                                                         strcpy(exten, "s");
1403                                         }
1404                                         pos=0;
1405                                         continue;
1406                                 } else if (res && strchr(AST_DIGIT_ANY, res)) {
1407                                         ast_log(LOG_DEBUG, "Got start of extension, %c\n", res);
1408                                         exten[1] = '\0';
1409                                         exten[0] = res;
1410                                         if ((res = read_newoption(chan, menu, exten, sizeof(exten))))
1411                                                 break;
1412                                         if (option_exists(menu, exten) < 0) {
1413                                                 if (option_exists(menu, "i")) {
1414                                                         ast_log(LOG_DEBUG, "Invalid extension entered, going to 'i'!\n");
1415                                                         strcpy(exten, "i");
1416                                                         pos = 0;
1417                                                         continue;
1418                                                 } else {
1419                                                         ast_log(LOG_DEBUG, "Aborting on invalid entry, with no 'i' option!\n");
1420                                                         res = -2;
1421                                                         break;
1422                                                 }
1423                                         } else {
1424                                                 ast_log(LOG_DEBUG, "New existing extension: %s\n", exten);
1425                                                 pos = 0;
1426                                                 continue;
1427                                         }
1428                                 }
1429                         }
1430                         pos++;
1431                 }
1432                 ast_log(LOG_DEBUG, "Stopping option '%s', res is %d\n", exten, res);
1433                 pos = 0;
1434                 if (!strcasecmp(exten, "s"))
1435                         strcpy(exten, "g");
1436                 else
1437                         break;
1438         }
1439         return res;
1440 }
1441
1442 int ast_ivr_menu_run(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
1443 {
1444         int res;
1445         res = ast_ivr_menu_run_internal(chan, menu, cbdata);
1446         /* Hide internal coding */
1447         if (res > 0)
1448                 res = 0;
1449         return res;
1450 }
1451
1452 char *ast_read_textfile(const char *filename)
1453 {
1454         int fd;
1455         char *output=NULL;
1456         struct stat filesize;
1457         int count=0;
1458         int res;
1459         if(stat(filename,&filesize)== -1){
1460                 ast_log(LOG_WARNING,"Error can't stat %s\n", filename);
1461                 return NULL;
1462         }
1463         count=filesize.st_size + 1;
1464         fd = open(filename, O_RDONLY);
1465         if (fd < 0) {
1466                 ast_log(LOG_WARNING, "Cannot open file '%s' for reading: %s\n", filename, strerror(errno));
1467                 return NULL;
1468         }
1469         output=(char *)malloc(count);
1470         if (output) {
1471                 res = read(fd, output, count - 1);
1472                 if (res == count - 1) {
1473                         output[res] = '\0';
1474                 } else {
1475                         ast_log(LOG_WARNING, "Short read of %s (%d of %d): %s\n", filename, res, count -  1, strerror(errno));
1476                         free(output);
1477                         output = NULL;
1478                 }
1479         } else
1480                 ast_log(LOG_WARNING, "Out of memory!\n");
1481         close(fd);
1482         return output;
1483 }
1484
1485 int ast_parseoptions(const struct ast_option *options, struct ast_flags *flags, char **args, char *optstr)
1486 {
1487         char *s;
1488         int curarg;
1489         int argloc;
1490         char *arg;
1491         int res = 0;
1492         flags->flags = 0;
1493         if (!optstr)
1494                 return 0;
1495         s = optstr;
1496         while(*s) {
1497                 curarg = *s & 0x7f;
1498                 flags->flags |= options[curarg].flag;
1499                 argloc = options[curarg].argoption;
1500                 s++;
1501                 if (*s == '(') {
1502                         /* Has argument */
1503                         s++;
1504                         arg = s;
1505                         while(*s && (*s != ')')) s++;
1506                         if (*s) {
1507                                 if (argloc)
1508                                         args[argloc - 1] = arg;
1509                                 *s = '\0';
1510                                 s++;
1511                         } else {
1512                                 ast_log(LOG_WARNING, "Missing closing parenthesis for argument '%c'\n", curarg);
1513                                 res = -1;
1514                         }
1515                 } else if (argloc)
1516                         args[argloc - 1] = NULL;
1517         }
1518         return res;
1519 }
1520