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