app.c

   1 /*
   2  * Asterisk -- An open source telephony toolkit.
   3  *
   4  * Copyright (C) 1999 - 2005, Digium, Inc.
   5  *
   6  * Mark Spencer <markster@digium.com>
   7  *
   8  * See http://www.asterisk.org for more information about
   9  * the Asterisk project. Please do not directly contact
  10  * any of the maintainers of this project for assistance;
  11  * the project provides a web site, mailing lists and IRC
  12  * channels for your use.
  13  *
  14  * This program is free software, distributed under the terms of
  15  * the GNU General Public License Version 2. See the LICENSE file
  16  * at the top of the source tree.
  17  */
  18
  19 /*! \file
  20  *
  21  * \brief Convenient Application Routines
  22  *
  23  * \author Mark Spencer <markster@digium.com>
  24  */
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <sys/time.h>
  30 #include <signal.h>
  31 #include <errno.h>
  32 #include <unistd.h>
  33 #include <dirent.h>
  34 #include <sys/types.h>
  35 #include <sys/stat.h>
  36 #include <regex.h>
  37
  38 #include "asterisk.h"
  39
  40 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  41
  42 #include "asterisk/channel.h"
  43 #include "asterisk/pbx.h"
  44 #include "asterisk/file.h"
  45 #include "asterisk/app.h"
  46 #include "asterisk/dsp.h"
  47 #include "asterisk/logger.h"
  48 #include "asterisk/options.h"
  49 #include "asterisk/utils.h"
  50 #include "asterisk/lock.h"
  51 #include "asterisk/indications.h"
  52
  53 #define MAX_OTHER_FORMATS 10
  54
  55
  56 /* !
  57 This function presents a dialtone and reads an extension into 'collect'
  58 which must be a pointer to a **pre-initialized** array of char having a
  59 size of 'size' suitable for writing to.  It will collect no more than the smaller
  60 of 'maxlen' or 'size' minus the original strlen() of collect digits.
  61 \return 0 if extension does not exist, 1 if extension exists
  62 */
  63 int ast_app_dtget(struct ast_channel *chan, const char *context, char *collect, size_t size, int maxlen, int timeout)
  64 {
  65         struct tone_zone_sound *ts;
  66         int res=0, x=0;
  67
  68         if(maxlen > size)
  69                 maxlen = size;
  70
  71         if(!timeout && chan->pbx)
  72                 timeout = chan->pbx->dtimeout;
  73         else if(!timeout)
  74                 timeout = 5;
  75
  76         ts = ast_get_indication_tone(chan->zone,"dial");
  77         if (ts && ts->data[0])
  78                 res = ast_playtones_start(chan, 0, ts->data, 0);
  79         else
  80                 ast_log(LOG_NOTICE,"Huh....? no dial for indications?\n");
  81
  82         for (x = strlen(collect); x < maxlen; ) {
  83                 res = ast_waitfordigit(chan, timeout);
  84                 if (!ast_ignore_pattern(context, collect))
  85                         ast_playtones_stop(chan);
  86                 if (res < 1)
  87                         break;
  88                 collect[x++] = res;
  89                 if (!ast_matchmore_extension(chan, context, collect, 1, chan->cid.cid_num)) {
  90                         if (collect[x-1] == '#') {
  91                                 /* Not a valid extension, ending in #, assume the # was to finish dialing */
  92                                 collect[x-1] = '\0';
  93                         }
  94                         break;
  95                 }
  96         }
  97         if (res >= 0)
  98                 res = ast_exists_extension(chan, context, collect, 1, chan->cid.cid_num) ? 1 : 0;
  99         return res;
 100 }
 101
 102
 103
 104 /*! \param timeout set timeout to 0 for "standard" timeouts. Set timeout to -1 for
 105    "ludicrous time" (essentially never times out) */
 106 int ast_app_getdata(struct ast_channel *c, char *prompt, char *s, int maxlen, int timeout)
 107 {
 108         int res,to,fto;
 109         /* XXX Merge with full version? XXX */
 110         if (maxlen)
 111                 s[0] = '\0';
 112         if (prompt) {
 113                 res = ast_streamfile(c, prompt, c->language);
 114                 if (res < 0)
 115                         return res;
 116         }
 117         fto = c->pbx ? c->pbx->rtimeout * 1000 : 6000;
 118         to = c->pbx ? c->pbx->dtimeout * 1000 : 2000;
 119
 120         if (timeout > 0)
 121                 fto = to = timeout;
 122         if (timeout < 0)
 123                 fto = to = 1000000000;
 124         res = ast_readstring(c, s, maxlen, to, fto, "#");
 125         return res;
 126 }
 127
 128
 129 int ast_app_getdata_full(struct ast_channel *c, char *prompt, char *s, int maxlen, int timeout, int audiofd, int ctrlfd)
 130 {
 131         int res,to,fto;
 132         if (prompt) {
 133                 res = ast_streamfile(c, prompt, c->language);
 134                 if (res < 0)
 135                         return res;
 136         }
 137         fto = 6000;
 138         to = 2000;
 139         if (timeout > 0)
 140                 fto = to = timeout;
 141         if (timeout < 0)
 142                 fto = to = 1000000000;
 143         res = ast_readstring_full(c, s, maxlen, to, fto, "#", audiofd, ctrlfd);
 144         return res;
 145 }
 146
 147 static int (*ast_has_voicemail_func)(const char *mailbox, const char *folder) = NULL;
 148 static int (*ast_inboxcount_func)(const char *mailbox, int *newmsgs, int *oldmsgs) = NULL;
 149 static int (*ast_messagecount_func)(const char *context, const char *mailbox, const char *folder) = NULL;
 150
 151 void ast_install_vm_functions(int (*has_voicemail_func)(const char *mailbox, const char *folder),
 152                               int (*inboxcount_func)(const char *mailbox, int *newmsgs, int *oldmsgs),
 153                               int (*messagecount_func)(const char *context, const char *mailbox, const char *folder))
 154 {
 155         ast_has_voicemail_func = has_voicemail_func;
 156         ast_inboxcount_func = inboxcount_func;
 157         ast_messagecount_func = messagecount_func;
 158 }
 159
 160 void ast_uninstall_vm_functions(void)
 161 {
 162         ast_has_voicemail_func = NULL;
 163         ast_inboxcount_func = NULL;
 164         ast_messagecount_func = NULL;
 165 }
 166
 167 int ast_app_has_voicemail(const char *mailbox, const char *folder)
 168 {
 169         static int warned = 0;
 170         if (ast_has_voicemail_func)
 171                 return ast_has_voicemail_func(mailbox, folder);
 172
 173         if ((option_verbose > 2) && !warned) {
 174                 ast_verbose(VERBOSE_PREFIX_3 "Message check requested for mailbox %s/folder %s but voicemail not loaded.\n", mailbox, folder ? folder : "INBOX");
 175                 warned++;
 176         }
 177         return 0;
 178 }
 179
 180
 181 int ast_app_inboxcount(const char *mailbox, int *newmsgs, int *oldmsgs)
 182 {
 183         static int warned = 0;
 184         if (newmsgs)
 185                 *newmsgs = 0;
 186         if (oldmsgs)
 187                 *oldmsgs = 0;
 188         if (ast_inboxcount_func)
 189                 return ast_inboxcount_func(mailbox, newmsgs, oldmsgs);
 190
 191         if (!warned && (option_verbose > 2)) {
 192                 warned++;
 193                 ast_verbose(VERBOSE_PREFIX_3 "Message count requested for mailbox %s but voicemail not loaded.\n", mailbox);
 194         }
 195
 196         return 0;
 197 }
 198
 199 int ast_app_messagecount(const char *context, const char *mailbox, const char *folder)
 200 {
 201         static int warned = 0;
 202         if (ast_messagecount_func)
 203                 return ast_messagecount_func(context, mailbox, folder);
 204
 205         if (!warned && (option_verbose > 2)) {
 206                 warned++;
 207                 ast_verbose(VERBOSE_PREFIX_3 "Message count requested for mailbox %s@%s/%s but voicemail not loaded.\n", mailbox, context, folder);
 208         }
 209
 210         return 0;
 211 }
 212
 213 int ast_dtmf_stream(struct ast_channel *chan, struct ast_channel *peer, const char *digits, int between)
 214 {
 215         const char *ptr;
 216         int res = 0;
 217         struct ast_frame f = {
 218                 .frametype = AST_FRAME_DTMF,
 219                 .src = "ast_dtmf_stream"
 220         };
 221
 222         if (!between)
 223                 between = 100;
 224
 225         if (peer)
 226                 res = ast_autoservice_start(peer);
 227
 228         if (!res)
 229                 res = ast_waitfor(chan, 100);
 230
 231         /* ast_waitfor will return the number of remaining ms on success */
 232         if (res < 0)
 233                 return res;
 234
 235         for (ptr = digits; *ptr; ptr++) {
 236                 if (*ptr == 'w') {
 237                         /* 'w' -- wait half a second */
 238                         if ((res = ast_safe_sleep(chan, 500)))
 239                                 break;
 240                 } else if (strchr("0123456789*#abcdfABCDF", *ptr)) {
 241                         /* Character represents valid DTMF */
 242                         if (*ptr == 'f' || *ptr == 'F') {
 243                                 /* ignore return values if not supported by channel */
 244                                 ast_indicate(chan, AST_CONTROL_FLASH);
 245                         } else {
 246                                 f.subclass = *ptr;
 247                                 if ((res = ast_write(chan, &f)))
 248                                         break;
 249                         }
 250                         /* pause between digits */
 251                         if ((res = ast_safe_sleep(chan, between)))
 252                                 break;
 253                 } else
 254                         ast_log(LOG_WARNING, "Illegal DTMF character '%c' in string. (0-9*#aAbBcCdD allowed)\n",*ptr);
 255         }
 256
 257         if (peer) {
 258                 /* Stop autoservice on the peer channel, but don't overwrite any error condition
 259                    that has occurred previously while acting on the primary channel */
 260                 if (ast_autoservice_stop(peer) && !res)
 261                         res = -1;
 262         }
 263
 264         return res;
 265 }
 266
 267 struct linear_state {
 268         int fd;
 269         int autoclose;
 270         int allowoverride;
 271         int origwfmt;
 272 };
 273
 274 static void linear_release(struct ast_channel *chan, void *params)
 275 {
 276         struct linear_state *ls = params;
 277         if (ls->origwfmt && ast_set_write_format(chan, ls->origwfmt)) {
 278                 ast_log(LOG_WARNING, "Unable to restore channel '%s' to format '%d'\n", chan->name, ls->origwfmt);
 279         }
 280         if (ls->autoclose)
 281                 close(ls->fd);
 282         free(params);
 283 }
 284
 285 static int linear_generator(struct ast_channel *chan, void *data, int len, int samples)
 286 {
 287         struct ast_frame f;
 288         short buf[2048 + AST_FRIENDLY_OFFSET / 2];
 289         struct linear_state *ls = data;
 290         int res;
 291         len = samples * 2;
 292         if (len > sizeof(buf) - AST_FRIENDLY_OFFSET) {
 293                 ast_log(LOG_WARNING, "Can't generate %d bytes of data!\n" ,len);
 294                 len = sizeof(buf) - AST_FRIENDLY_OFFSET;
 295         }
 296         memset(&f, 0, sizeof(f));
 297         res = read(ls->fd, buf + AST_FRIENDLY_OFFSET/2, len);
 298         if (res > 0) {
 299                 f.frametype = AST_FRAME_VOICE;
 300                 f.subclass = AST_FORMAT_SLINEAR;
 301                 f.data = buf + AST_FRIENDLY_OFFSET/2;
 302                 f.datalen = res;
 303                 f.samples = res / 2;
 304                 f.offset = AST_FRIENDLY_OFFSET;
 305                 ast_write(chan, &f);
 306                 if (res == len)
 307                         return 0;
 308         }
 309         return -1;
 310 }
 311
 312 static void *linear_alloc(struct ast_channel *chan, void *params)
 313 {
 314         struct linear_state *ls;
 315         /* In this case, params is already malloc'd */
 316         if (params) {
 317                 ls = params;
 318                 if (ls->allowoverride)
 319                         ast_set_flag(chan, AST_FLAG_WRITE_INT);
 320                 else
 321                         ast_clear_flag(chan, AST_FLAG_WRITE_INT);
 322                 ls->origwfmt = chan->writeformat;
 323                 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR)) {
 324                         ast_log(LOG_WARNING, "Unable to set '%s' to linear format (write)\n", chan->name);
 325                         free(ls);
 326                         ls = params = NULL;
 327                 }
 328         }
 329         return params;
 330 }
 331
 332 static struct ast_generator linearstream =
 333 {
 334         alloc: linear_alloc,
 335         release: linear_release,
 336         generate: linear_generator,
 337 };
 338
 339 int ast_linear_stream(struct ast_channel *chan, const char *filename, int fd, int allowoverride)
 340 {
 341         struct linear_state *lin;
 342         char tmpf[256];
 343         int res = -1;
 344         int autoclose = 0;
 345         if (fd < 0) {
 346                 if (ast_strlen_zero(filename))
 347                         return -1;
 348                 autoclose = 1;
 349                 if (filename[0] == '/')
 350                         ast_copy_string(tmpf, filename, sizeof(tmpf));
 351                 else
 352                         snprintf(tmpf, sizeof(tmpf), "%s/%s/%s", (char *)ast_config_AST_DATA_DIR, "sounds", filename);
 353                 fd = open(tmpf, O_RDONLY);
 354                 if (fd < 0){
 355                         ast_log(LOG_WARNING, "Unable to open file '%s': %s\n", tmpf, strerror(errno));
 356                         return -1;
 357                 }
 358         }
 359         if ((lin = ast_calloc(1, sizeof(*lin)))) {
 360                 lin->fd = fd;
 361                 lin->allowoverride = allowoverride;
 362                 lin->autoclose = autoclose;
 363                 res = ast_activate_generator(chan, &linearstream, lin);
 364         }
 365         return res;
 366 }
 367
 368 int ast_control_streamfile(struct ast_channel *chan, const char *file,
 369                            const char *fwd, const char *rev,
 370                            const char *stop, const char *pause,
 371                            const char *restart, int skipms)
 372 {
 373         char *breaks = NULL;
 374         char *end = NULL;
 375         int blen = 2;
 376         int res;
 377         long pause_restart_point = 0;
 378
 379         if (stop)
 380                 blen += strlen(stop);
 381         if (pause)
 382                 blen += strlen(pause);
 383         if (restart)
 384                 blen += strlen(restart);
 385
 386         if (blen > 2) {
 387                 breaks = alloca(blen + 1);
 388                 breaks[0] = '\0';
 389                 if (stop)
 390                         strcat(breaks, stop);
 391                 if (pause)
 392                         strcat(breaks, pause);
 393                 if (restart)
 394                         strcat(breaks, restart);
 395         }
 396         if (chan->_state != AST_STATE_UP)
 397                 res = ast_answer(chan);
 398
 399         if (file) {
 400                 if ((end = strchr(file,':'))) {
 401                         if (!strcasecmp(end, ":end")) {
 402                                 *end = '\0';
 403                                 end++;
 404                         }
 405                 }
 406         }
 407
 408         for (;;) {
 409                 ast_stopstream(chan);
 410                 res = ast_streamfile(chan, file, chan->language);
 411                 if (!res) {
 412                         if (pause_restart_point) {
 413                                 ast_seekstream(chan->stream, pause_restart_point, SEEK_SET);
 414                                 pause_restart_point = 0;
 415                         }
 416                         else if (end) {
 417                                 ast_seekstream(chan->stream, 0, SEEK_END);
 418                                 end = NULL;
 419                         };
 420                         res = ast_waitstream_fr(chan, breaks, fwd, rev, skipms);
 421                 }
 422
 423                 if (res < 1)
 424                         break;
 425
 426                 /* We go at next loop if we got the restart char */
 427                 if (restart && strchr(restart, res)) {
 428                         ast_log(LOG_DEBUG, "we'll restart the stream here at next loop\n");
 429                         pause_restart_point = 0;
 430                         continue;
 431                 }
 432
 433                 if (pause && strchr(pause, res)) {
 434                         pause_restart_point = ast_tellstream(chan->stream);
 435                         for (;;) {
 436                                 ast_stopstream(chan);
 437                                 res = ast_waitfordigit(chan, 1000);
 438                                 if (!res)
 439                                         continue;
 440                                 else if (res == -1 || strchr(pause, res) || (stop && strchr(stop, res)))
 441                                         break;
 442                         }
 443                         if (res == *pause) {
 444                                 res = 0;
 445                                 continue;
 446                         }
 447                 }
 448
 449                 if (res == -1)
 450                         break;
 451
 452                 /* if we get one of our stop chars, return it to the calling function */
 453                 if (stop && strchr(stop, res))
 454                         break;
 455         }
 456
 457         ast_stopstream(chan);
 458
 459         return res;
 460 }
 461
 462 int ast_play_and_wait(struct ast_channel *chan, const char *fn)
 463 {
 464         int d;
 465         d = ast_streamfile(chan, fn, chan->language);
 466         if (d)
 467                 return d;
 468         d = ast_waitstream(chan, AST_DIGIT_ANY);
 469         ast_stopstream(chan);
 470         return d;
 471 }
 472
 473 static int global_silence_threshold = 128;
 474 static int global_maxsilence = 0;
 475
 476 /*! Optionally play a sound file or a beep, then record audio and video from the channel.
 477  * @param chan Channel to playback to/record from.
 478  * @param playfile Filename of sound to play before recording begins.
 479  * @param recordfile Filename to record to.
 480  * @param maxtime Maximum length of recording (in milliseconds).
 481  * @param fmt Format(s) to record message in. Multiple formats may be specified by separating them with a '|'.
 482  * @param duration Where to store actual length of the recorded message (in milliseconds).
 483  * @param beep Whether to play a beep before starting to record.
 484  * @param silencethreshold
 485  * @param maxsilence Length of silence that will end a recording (in milliseconds).
 486  * @param path Optional filesystem path to unlock.
 487  * @param prepend If true, prepend the recorded audio to an existing file.
 488  * @param acceptdtmf DTMF digits that will end the recording.
 489  * @param canceldtmf DTMF digits that will cancel the recording.
 490  */
 491
 492 static int __ast_play_and_record(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, int beep, int silencethreshold, int maxsilence, const char *path, int prepend, const char *acceptdtmf, const char *canceldtmf)
 493 {
 494         int d = 0;
 495         char *fmts;
 496         char comment[256];
 497         int x, fmtcnt = 1, res = -1, outmsg = 0;
 498         struct ast_filestream *others[MAX_OTHER_FORMATS];
 499         char *sfmt[MAX_OTHER_FORMATS];
 500         char *stringp = NULL;
 501         time_t start, end;
 502         struct ast_dsp *sildet = NULL;   /* silence detector dsp */
 503         int totalsilence = 0;
 504         int rfmt = 0;
 505         struct ast_silence_generator *silgen = NULL;
 506         char prependfile[80];
 507
 508         if (silencethreshold < 0)
 509                 silencethreshold = global_silence_threshold;
 510
 511         if (maxsilence < 0)
 512                 maxsilence = global_maxsilence;
 513
 514         /* barf if no pointer passed to store duration in */
 515         if (duration == NULL) {
 516                 ast_log(LOG_WARNING, "Error play_and_record called without duration pointer\n");
 517                 return -1;
 518         }
 519
 520         ast_log(LOG_DEBUG,"play_and_record: %s, %s, '%s'\n", playfile ? playfile : "<None>", recordfile, fmt);
 521         snprintf(comment, sizeof(comment), "Playing %s, Recording to: %s on %s\n", playfile ? playfile : "<None>", recordfile, chan->name);
 522
 523         if (playfile || beep) {
 524                 if (!beep)
 525                         d = ast_play_and_wait(chan, playfile);
 526                 if (d > -1)
 527                         d = ast_stream_and_wait(chan, "beep", chan->language, "");
 528                 if (d < 0)
 529                         return -1;
 530         }
 531
 532         if (prepend) {
 533                 ast_copy_string(prependfile, recordfile, sizeof(prependfile));
 534                 strncat(prependfile, "-prepend", sizeof(prependfile) - strlen(prependfile) - 1);
 535         }
 536
 537         fmts = ast_strdupa(fmt);
 538
 539         stringp = fmts;
 540         strsep(&stringp, "|");
 541         ast_log(LOG_DEBUG,"Recording Formats: sfmts=%s\n", fmts);
 542         sfmt[0] = ast_strdupa(fmts);
 543
 544         while ((fmt = strsep(&stringp, "|"))) {
 545                 if (fmtcnt > MAX_OTHER_FORMATS - 1) {
 546                         ast_log(LOG_WARNING, "Please increase MAX_OTHER_FORMATS in app.c\n");
 547                         break;
 548                 }
 549                 sfmt[fmtcnt++] = ast_strdupa(fmt);
 550         }
 551
 552         end = start = time(NULL);  /* pre-initialize end to be same as start in case we never get into loop */
 553         for (x = 0; x < fmtcnt; x++) {
 554                 others[x] = ast_writefile(prepend ? prependfile : recordfile, sfmt[x], comment, O_TRUNC, 0, 0700);
 555                 if (option_verbose > 2)
 556                         ast_verbose(VERBOSE_PREFIX_3 "x=%d, open writing:  %s format: %s, %p\n", x, prepend ? prependfile : recordfile, sfmt[x], others[x]);
 557
 558                 if (!others[x]) {
 559                         break;
 560                 }
 561         }
 562
 563         if (path)
 564                 ast_unlock_path(path);
 565
 566         if (maxsilence > 0) {
 567                 sildet = ast_dsp_new(); /* Create the silence detector */
 568                 if (!sildet) {
 569                         ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
 570                         return -1;
 571                 }
 572                 ast_dsp_set_threshold(sildet, silencethreshold);
 573                 rfmt = chan->readformat;
 574                 res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
 575                 if (res < 0) {
 576                         ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
 577                         ast_dsp_free(sildet);
 578                         return -1;
 579                 }
 580         }
 581
 582         if (!prepend) {
 583                 /* Request a video update */
 584                 ast_indicate(chan, AST_CONTROL_VIDUPDATE);
 585
 586                 if (ast_opt_transmit_silence)
 587                         silgen = ast_channel_start_silence_generator(chan);
 588         }
 589
 590         if (x == fmtcnt) {
 591                 /* Loop forever, writing the packets we read to the writer(s), until
 592                    we read a digit or get a hangup */
 593                 struct ast_frame *f;
 594                 for (;;) {
 595                         res = ast_waitfor(chan, 2000);
 596                         if (!res) {
 597                                 ast_log(LOG_DEBUG, "One waitfor failed, trying another\n");
 598                                 /* Try one more time in case of masq */
 599                                 res = ast_waitfor(chan, 2000);
 600                                 if (!res) {
 601                                         ast_log(LOG_WARNING, "No audio available on %s??\n", chan->name);
 602                                         res = -1;
 603                                 }
 604                         }
 605
 606                         if (res < 0) {
 607                                 f = NULL;
 608                                 break;
 609                         }
 610                         f = ast_read(chan);
 611                         if (!f)
 612                                 break;
 613                         if (f->frametype == AST_FRAME_VOICE) {
 614                                 /* write each format */
 615                                 for (x = 0; x < fmtcnt; x++) {
 616                                         if (prepend && !others[x])
 617                                                 break;
 618                                         res = ast_writestream(others[x], f);
 619                                 }
 620
 621                                 /* Silence Detection */
 622                                 if (maxsilence > 0) {
 623                                         int dspsilence = 0;
 624                                         ast_dsp_silence(sildet, f, &dspsilence);
 625                                         if (dspsilence)
 626                                                 totalsilence = dspsilence;
 627                                         else
 628                                                 totalsilence = 0;
 629
 630                                         if (totalsilence > maxsilence) {
 631                                                 /* Ended happily with silence */
 632                                                 if (option_verbose > 2)
 633                                                         ast_verbose( VERBOSE_PREFIX_3 "Recording automatically stopped after a silence of %d seconds\n", totalsilence/1000);
 634                                                 res = 'S';
 635                                                 outmsg = 2;
 636                                                 break;
 637                                         }
 638                                 }
 639                                 /* Exit on any error */
 640                                 if (res) {
 641                                         ast_log(LOG_WARNING, "Error writing frame\n");
 642                                         break;
 643                                 }
 644                         } else if (f->frametype == AST_FRAME_VIDEO) {
 645                                 /* Write only once */
 646                                 ast_writestream(others[0], f);
 647                         } else if (f->frametype == AST_FRAME_DTMF) {
 648                                 if (prepend) {
 649                                 /* stop recording with any digit */
 650                                         if (option_verbose > 2)
 651                                                 ast_verbose(VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
 652                                         res = 't';
 653                                         outmsg = 2;
 654                                         break;
 655                                 }
 656                                 if (strchr(acceptdtmf, f->subclass)) {
 657                                         if (option_verbose > 2)
 658                                                 ast_verbose(VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
 659                                         res = f->subclass;
 660                                         outmsg = 2;
 661                                         break;
 662                                 }
 663                                 if (strchr(canceldtmf, f->subclass)) {
 664                                         if (option_verbose > 2)
 665                                                 ast_verbose(VERBOSE_PREFIX_3 "User cancelled message by pressing %c\n", f->subclass);
 666                                         res = f->subclass;
 667                                         outmsg = 0;
 668                                         break;
 669                                 }
 670                         }
 671                         if (maxtime) {
 672                                 end = time(NULL);
 673                                 if (maxtime < (end - start)) {
 674                                         if (option_verbose > 2)
 675                                                 ast_verbose(VERBOSE_PREFIX_3 "Took too long, cutting it short...\n");
 676                                         res = 't';
 677                                         outmsg = 2;
 678                                         break;
 679                                 }
 680                         }
 681                         ast_frfree(f);
 682                 }
 683                 if (!f) {
 684                         if (option_verbose > 2)
 685                                 ast_verbose(VERBOSE_PREFIX_3 "User hung up\n");
 686                         res = -1;
 687                         outmsg = 1;
 688                 } else {
 689                         ast_frfree(f);
 690                 }
 691                 if (end == start)
 692                         end = time(NULL);
 693         } else {
 694                 ast_log(LOG_WARNING, "Error creating writestream '%s', format '%s'\n", recordfile, sfmt[x]);
 695         }
 696
 697         if (!prepend) {
 698                 if (silgen)
 699                         ast_channel_stop_silence_generator(chan, silgen);
 700         }
 701         *duration = end - start;
 702
 703         if (!prepend) {
 704                 for (x = 0; x < fmtcnt; x++) {
 705                         if (!others[x])
 706                                 break;
 707                         if (res > 0)
 708                                 ast_stream_rewind(others[x], totalsilence ? totalsilence-200 : 200);
 709                         ast_truncstream(others[x]);
 710                         ast_closestream(others[x]);
 711                 }
 712         }
 713
 714         if (prepend && outmsg) {
 715                 struct ast_filestream *realfiles[MAX_OTHER_FORMATS];
 716                 struct ast_frame *fr;
 717
 718                 for (x = 0; x < fmtcnt; x++) {
 719                         snprintf(comment, sizeof(comment), "Opening the real file %s.%s\n", recordfile, sfmt[x]);
 720                         realfiles[x] = ast_readfile(recordfile, sfmt[x], comment, O_RDONLY, 0, 0);
 721                         if (!others[x] || !realfiles[x])
 722                                 break;
 723                         ast_stream_rewind(others[x], totalsilence ? totalsilence-200 : 200);
 724                         ast_truncstream(others[x]);
 725                         /* add the original file too */
 726                         while ((fr = ast_readframe(realfiles[x]))) {
 727                                 ast_writestream(others[x], fr);
 728                                 ast_frfree(fr);
 729                         }
 730                         ast_closestream(others[x]);
 731                         ast_closestream(realfiles[x]);
 732                         ast_filerename(prependfile, recordfile, sfmt[x]);
 733                         if (option_verbose > 3)
 734                                 ast_verbose(VERBOSE_PREFIX_4 "Recording Format: sfmts=%s, prependfile %s, recordfile %s\n", sfmt[x], prependfile, recordfile);
 735                         ast_filedelete(prependfile, sfmt[x]);
 736                 }
 737         }
 738         if (rfmt && ast_set_read_format(chan, rfmt)) {
 739                 ast_log(LOG_WARNING, "Unable to restore format %s to channel '%s'\n", ast_getformatname(rfmt), chan->name);
 740         }
 741         if (outmsg == 2) {
 742                 ast_stream_and_wait(chan, "auth-thankyou", chan->language, "");
 743         }
 744         if (sildet)
 745                 ast_dsp_free(sildet);
 746         return res;
 747 }
 748
 749 static char default_acceptdtmf[] = "#";
 750 static char default_canceldtmf[] = "";
 751
 752 int ast_play_and_record_full(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, int silencethreshold, int maxsilence, const char *path, const char *acceptdtmf, const char *canceldtmf)
 753 {
 754         return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, 0, silencethreshold, maxsilence, path, 0, S_OR(acceptdtmf, default_acceptdtmf), S_OR(canceldtmf, default_canceldtmf));
 755 }
 756
 757 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)
 758 {
 759         return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, 0, silencethreshold, maxsilence, path, 0, default_acceptdtmf, default_canceldtmf);
 760 }
 761
 762 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)
 763 {
 764         return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, beep, silencethreshold, maxsilence, NULL, 1, default_acceptdtmf, default_canceldtmf);
 765 }
 766
 767 /* Channel group core functions */
 768
 769 int ast_app_group_split_group(const char *data, char *group, int group_max, char *category, int category_max)
 770 {
 771         int res=0;
 772         char tmp[256];
 773         char *grp=NULL, *cat=NULL;
 774
 775         if (!ast_strlen_zero(data)) {
 776                 ast_copy_string(tmp, data, sizeof(tmp));
 777                 grp = tmp;
 778                 cat = strchr(tmp, '@');
 779                 if (cat) {
 780                         *cat = '\0';
 781                         cat++;
 782                 }
 783         }
 784
 785         if (!ast_strlen_zero(grp))
 786                 ast_copy_string(group, grp, group_max);
 787         else
 788                 res = -1;
 789
 790         if (cat)
 791                 snprintf(category, category_max, "%s_%s", GROUP_CATEGORY_PREFIX, cat);
 792         else
 793                 ast_copy_string(category, GROUP_CATEGORY_PREFIX, category_max);
 794
 795         return res;
 796 }
 797
 798 int ast_app_group_set_channel(struct ast_channel *chan, const char *data)
 799 {
 800         int res=0;
 801         char group[80] = "";
 802         char category[80] = "";
 803
 804         if (!ast_app_group_split_group(data, group, sizeof(group), category, sizeof(category))) {
 805                 pbx_builtin_setvar_helper(chan, category, group);
 806         } else
 807                 res = -1;
 808
 809         return res;
 810 }
 811
 812 int ast_app_group_get_count(const char *group, const char *category)
 813 {
 814         struct ast_channel *chan;
 815         int count = 0;
 816         const char *test;
 817         char cat[80];
 818         const char *s;
 819
 820         if (ast_strlen_zero(group))
 821                 return 0;
 822
 823         s = S_OR(category, GROUP_CATEGORY_PREFIX);
 824         ast_copy_string(cat, s, sizeof(cat));
 825
 826         chan = NULL;
 827         while ((chan = ast_channel_walk_locked(chan)) != NULL) {
 828                 test = pbx_builtin_getvar_helper(chan, cat);
 829                 if (test && !strcasecmp(test, group))
 830                         count++;
 831                 ast_channel_unlock(chan);
 832         }
 833
 834         return count;
 835 }
 836
 837 int ast_app_group_match_get_count(const char *groupmatch, const char *category)
 838 {
 839         regex_t regexbuf;
 840         struct ast_channel *chan;
 841         int count = 0;
 842         const char *test;
 843         char cat[80];
 844         const char *s;
 845
 846         if (ast_strlen_zero(groupmatch))
 847                 return 0;
 848
 849         /* if regex compilation fails, return zero matches */
 850         if (regcomp(&regexbuf, groupmatch, REG_EXTENDED | REG_NOSUB))
 851                 return 0;
 852
 853         s = S_OR(category, GROUP_CATEGORY_PREFIX);
 854         ast_copy_string(cat, s, sizeof(cat));
 855
 856         chan = NULL;
 857         while ((chan = ast_channel_walk_locked(chan)) != NULL) {
 858                 test = pbx_builtin_getvar_helper(chan, cat);
 859                 if (test && !regexec(&regexbuf, test, 0, NULL, 0))
 860                         count++;
 861                 ast_channel_unlock(chan);
 862         }
 863
 864         regfree(&regexbuf);
 865
 866         return count;
 867 }
 868
 869 unsigned int ast_app_separate_args(char *buf, char delim, char **array, int arraylen)
 870 {
 871         int argc;
 872         char *scan;
 873         int paren = 0, quote = 0;
 874
 875         if (!buf || !array || !arraylen)
 876                 return 0;
 877
 878         memset(array, 0, arraylen * sizeof(*array));
 879
 880         scan = buf;
 881
 882         for (argc = 0; *scan && (argc < arraylen - 1); argc++) {
 883                 array[argc] = scan;
 884                 for (; *scan; scan++) {
 885                         if (*scan == '(')
 886                                 paren++;
 887                         else if (*scan == ')') {
 888                                 if (paren)
 889                                         paren--;
 890                         } else if (*scan == '"') {
 891                                 quote = quote ? 0 : 1;
 892                                 /* Remove quote character from argument */
 893                                 memmove(scan, scan + 1, strlen(scan));
 894                                 scan--;
 895                         } else if (*scan == '\\') {
 896                                 /* Literal character, don't parse */
 897                                 memmove(scan, scan + 1, strlen(scan));
 898                         } else if ((*scan == delim) && !paren && !quote) {
 899                                 *scan++ = '\0';
 900                                 break;
 901                         }
 902                 }
 903         }
 904
 905         if (*scan)
 906                 array[argc++] = scan;
 907
 908         return argc;
 909 }
 910
 911 enum AST_LOCK_RESULT ast_lock_path(const char *path)
 912 {
 913         char *s;
 914         char *fs;
 915         int res;
 916         int fd;
 917         int lp = strlen(path);
 918         time_t start;
 919
 920         if (!(s = alloca(lp + 10)) || !(fs = alloca(lp + 20))) {
 921                 ast_log(LOG_WARNING, "Out of memory!\n");
 922                 return AST_LOCK_FAILURE;
 923         }
 924
 925         snprintf(fs, strlen(path) + 19, "%s/.lock-%08lx", path, ast_random());
 926         fd = open(fs, O_WRONLY | O_CREAT | O_EXCL, 0600);
 927         if (fd < 0) {
 928                 fprintf(stderr, "Unable to create lock file '%s': %s\n", path, strerror(errno));
 929                 return AST_LOCK_PATH_NOT_FOUND;
 930         }
 931         close(fd);
 932
 933         snprintf(s, strlen(path) + 9, "%s/.lock", path);
 934         start = time(NULL);
 935         while (((res = link(fs, s)) < 0) && (errno == EEXIST) && (time(NULL) - start < 5))
 936                 usleep(1);
 937         if (res) {
 938                 ast_log(LOG_WARNING, "Failed to lock path '%s': %s\n", path, strerror(errno));
 939                 return AST_LOCK_TIMEOUT;
 940         } else {
 941                 unlink(fs);
 942                 ast_log(LOG_DEBUG, "Locked path '%s'\n", path);
 943                 return AST_LOCK_SUCCESS;
 944         }
 945 }
 946
 947 int ast_unlock_path(const char *path)
 948 {
 949         char *s;
 950         if (!(s = alloca(strlen(path) + 10)))
 951                 return -1;
 952         snprintf(s, strlen(path) + 9, "%s/%s", path, ".lock");
 953         ast_log(LOG_DEBUG, "Unlocked path '%s'\n", path);
 954         return unlink(s);
 955 }
 956
 957 int ast_record_review(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, const char *path)
 958 {
 959         int silencethreshold = 128;
 960         int maxsilence=0;
 961         int res = 0;
 962         int cmd = 0;
 963         int max_attempts = 3;
 964         int attempts = 0;
 965         int recorded = 0;
 966         int message_exists = 0;
 967         /* Note that urgent and private are for flagging messages as such in the future */
 968
 969         /* barf if no pointer passed to store duration in */
 970         if (duration == NULL) {
 971                 ast_log(LOG_WARNING, "Error ast_record_review called without duration pointer\n");
 972                 return -1;
 973         }
 974
 975         cmd = '3';       /* Want to start by recording */
 976
 977         while ((cmd >= 0) && (cmd != 't')) {
 978                 switch (cmd) {
 979                 case '1':
 980                         if (!message_exists) {
 981                                 /* In this case, 1 is to record a message */
 982                                 cmd = '3';
 983                                 break;
 984                         } else {
 985                                 ast_stream_and_wait(chan, "vm-msgsaved", chan->language, "");
 986                                 cmd = 't';
 987                                 return res;
 988                         }
 989                 case '2':
 990                         /* Review */
 991                         ast_verbose(VERBOSE_PREFIX_3 "Reviewing the recording\n");
 992                         cmd = ast_stream_and_wait(chan, recordfile, chan->language, AST_DIGIT_ANY);
 993                         break;
 994                 case '3':
 995                         message_exists = 0;
 996                         /* Record */
 997                         if (recorded == 1)
 998                                 ast_verbose(VERBOSE_PREFIX_3 "Re-recording\n");
 999                         else
1000                                 ast_verbose(VERBOSE_PREFIX_3 "Recording\n");
1001                         recorded = 1;
1002                         cmd = ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, silencethreshold, maxsilence, path);
1003                         if (cmd == -1) {
1004                         /* User has hung up, no options to give */
1005                                 return cmd;
1006                         }
1007                         if (cmd == '0') {
1008                                 break;
1009                         } else if (cmd == '*') {
1010                                 break;
1011                         }
1012                         else {
1013                                 /* If all is well, a message exists */
1014                                 message_exists = 1;
1015                                 cmd = 0;
1016                         }
1017                         break;
1018                 case '4':
1019                 case '5':
1020                 case '6':
1021                 case '7':
1022                 case '8':
1023                 case '9':
1024                 case '*':
1025                 case '#':
1026                         cmd = ast_play_and_wait(chan, "vm-sorry");
1027                         break;
1028                 default:
1029                         if (message_exists) {
1030                                 cmd = ast_play_and_wait(chan, "vm-review");
1031                         }
1032                         else {
1033                                 cmd = ast_play_and_wait(chan, "vm-torerecord");
1034                                 if (!cmd)
1035                                         cmd = ast_waitfordigit(chan, 600);
1036                         }
1037
1038                         if (!cmd)
1039                                 cmd = ast_waitfordigit(chan, 6000);
1040                         if (!cmd) {
1041                                 attempts++;
1042                         }
1043                         if (attempts > max_attempts) {
1044                                 cmd = 't';
1045                         }
1046                 }
1047         }
1048         if (cmd == 't')
1049                 cmd = 0;
1050         return cmd;
1051 }
1052
1053 #define RES_UPONE (1 << 16)
1054 #define RES_EXIT  (1 << 17)
1055 #define RES_REPEAT (1 << 18)
1056 #define RES_RESTART ((1 << 19) | RES_REPEAT)
1057
1058 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata);
1059 static int ivr_dispatch(struct ast_channel *chan, struct ast_ivr_option *option, char *exten, void *cbdata)
1060 {
1061         int res;
1062         int (*ivr_func)(struct ast_channel *, void *);
1063         char *c;
1064         char *n;
1065
1066         switch(option->action) {
1067         case AST_ACTION_UPONE:
1068                 return RES_UPONE;
1069         case AST_ACTION_EXIT:
1070                 return RES_EXIT | (((unsigned long)(option->adata)) & 0xffff);
1071         case AST_ACTION_REPEAT:
1072                 return RES_REPEAT | (((unsigned long)(option->adata)) & 0xffff);
1073         case AST_ACTION_RESTART:
1074                 return RES_RESTART ;
1075         case AST_ACTION_NOOP:
1076                 return 0;
1077         case AST_ACTION_BACKGROUND:
1078                 res = ast_stream_and_wait(chan, (char *)option->adata, chan->language, AST_DIGIT_ANY);
1079                 if (res < 0) {
1080                         ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
1081                         res = 0;
1082                 }
1083                 return res;
1084         case AST_ACTION_PLAYBACK:
1085                 res = ast_stream_and_wait(chan, (char *)option->adata, chan->language, "");
1086                 if (res < 0) {
1087                         ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
1088                         res = 0;
1089                 }
1090                 return res;
1091         case AST_ACTION_MENU:
1092                 res = ast_ivr_menu_run_internal(chan, (struct ast_ivr_menu *)option->adata, cbdata);
1093                 /* Do not pass entry errors back up, treaat ast though ti was an "UPONE" */
1094                 if (res == -2)
1095                         res = 0;
1096                 return res;
1097         case AST_ACTION_WAITOPTION:
1098                 res = ast_waitfordigit(chan, 1000 * (chan->pbx ? chan->pbx->rtimeout : 10));
1099                 if (!res)
1100                         return 't';
1101                 return res;
1102         case AST_ACTION_CALLBACK:
1103                 ivr_func = option->adata;
1104                 res = ivr_func(chan, cbdata);
1105                 return res;
1106         case AST_ACTION_TRANSFER:
1107                 res = ast_parseable_goto(chan, option->adata);
1108                 return 0;
1109         case AST_ACTION_PLAYLIST:
1110         case AST_ACTION_BACKLIST:
1111                 res = 0;
1112                 c = ast_strdupa(option->adata);
1113                 while ((n = strsep(&c, ";"))) {
1114                         if ((res = ast_stream_and_wait(chan, n, chan->language,
1115                                         (option->action == AST_ACTION_BACKLIST) ? AST_DIGIT_ANY : "")))
1116                                 break;
1117                 }
1118                 ast_stopstream(chan);
1119                 return res;
1120         default:
1121                 ast_log(LOG_NOTICE, "Unknown dispatch function %d, ignoring!\n", option->action);
1122                 return 0;
1123         };
1124         return -1;
1125 }
1126
1127 static int option_exists(struct ast_ivr_menu *menu, char *option)
1128 {
1129         int x;
1130         for (x=0;menu->options[x].option;x++)
1131                 if (!strcasecmp(menu->options[x].option, option))
1132                         return x;
1133         return -1;
1134 }
1135
1136 static int option_matchmore(struct ast_ivr_menu *menu, char *option)
1137 {
1138         int x;
1139         for (x=0;menu->options[x].option;x++)
1140                 if ((!strncasecmp(menu->options[x].option, option, strlen(option))) &&
1141                                 (menu->options[x].option[strlen(option)]))
1142                         return x;
1143         return -1;
1144 }
1145
1146 static int read_newoption(struct ast_channel *chan, struct ast_ivr_menu *menu, char *exten, int maxexten)
1147 {
1148         int res=0;
1149         int ms;
1150         while(option_matchmore(menu, exten)) {
1151                 ms = chan->pbx ? chan->pbx->dtimeout : 5000;
1152                 if (strlen(exten) >= maxexten - 1)
1153                         break;
1154                 res = ast_waitfordigit(chan, ms);
1155                 if (res < 1)
1156                         break;
1157                 exten[strlen(exten) + 1] = '\0';
1158                 exten[strlen(exten)] = res;
1159         }
1160         return res > 0 ? 0 : res;
1161 }
1162
1163 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
1164 {
1165         /* Execute an IVR menu structure */
1166         int res=0;
1167         int pos = 0;
1168         int retries = 0;
1169         char exten[AST_MAX_EXTENSION] = "s";
1170         if (option_exists(menu, "s") < 0) {
1171                 strcpy(exten, "g");
1172                 if (option_exists(menu, "g") < 0) {
1173                         ast_log(LOG_WARNING, "No 's' nor 'g' extension in menu '%s'!\n", menu->title);
1174                         return -1;
1175                 }
1176         }
1177         while(!res) {
1178                 while(menu->options[pos].option) {
1179                         if (!strcasecmp(menu->options[pos].option, exten)) {
1180                                 res = ivr_dispatch(chan, menu->options + pos, exten, cbdata);
1181                                 ast_log(LOG_DEBUG, "IVR Dispatch of '%s' (pos %d) yields %d\n", exten, pos, res);
1182                                 if (res < 0)
1183                                         break;
1184                                 else if (res & RES_UPONE)
1185                                         return 0;
1186                                 else if (res & RES_EXIT)
1187                                         return res;
1188                                 else if (res & RES_REPEAT) {
1189                                         int maxretries = res & 0xffff;
1190                                         if ((res & RES_RESTART) == RES_RESTART) {
1191                                                 retries = 0;
1192                                         } else
1193                                                 retries++;
1194                                         if (!maxretries)
1195                                                 maxretries = 3;
1196                                         if ((maxretries > 0) && (retries >= maxretries)) {
1197                                                 ast_log(LOG_DEBUG, "Max retries %d exceeded\n", maxretries);
1198                                                 return -2;
1199                                         } else {
1200                                                 if (option_exists(menu, "g") > -1)
1201                                                         strcpy(exten, "g");
1202                                                 else if (option_exists(menu, "s") > -1)
1203                                                         strcpy(exten, "s");
1204                                         }
1205                                         pos=0;
1206                                         continue;
1207                                 } else if (res && strchr(AST_DIGIT_ANY, res)) {
1208                                         ast_log(LOG_DEBUG, "Got start of extension, %c\n", res);
1209                                         exten[1] = '\0';
1210                                         exten[0] = res;
1211                                         if ((res = read_newoption(chan, menu, exten, sizeof(exten))))
1212                                                 break;
1213                                         if (option_exists(menu, exten) < 0) {
1214                                                 if (option_exists(menu, "i")) {
1215                                                         ast_log(LOG_DEBUG, "Invalid extension entered, going to 'i'!\n");
1216                                                         strcpy(exten, "i");
1217                                                         pos = 0;
1218                                                         continue;
1219                                                 } else {
1220                                                         ast_log(LOG_DEBUG, "Aborting on invalid entry, with no 'i' option!\n");
1221                                                         res = -2;
1222                                                         break;
1223                                                 }
1224                                         } else {
1225                                                 ast_log(LOG_DEBUG, "New existing extension: %s\n", exten);
1226                                                 pos = 0;
1227                                                 continue;
1228                                         }
1229                                 }
1230                         }
1231                         pos++;
1232                 }
1233                 ast_log(LOG_DEBUG, "Stopping option '%s', res is %d\n", exten, res);
1234                 pos = 0;
1235                 if (!strcasecmp(exten, "s"))
1236                         strcpy(exten, "g");
1237                 else
1238                         break;
1239         }
1240         return res;
1241 }
1242
1243 int ast_ivr_menu_run(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
1244 {
1245         int res;
1246         res = ast_ivr_menu_run_internal(chan, menu, cbdata);
1247         /* Hide internal coding */
1248         if (res > 0)
1249                 res = 0;
1250         return res;
1251 }
1252
1253 char *ast_read_textfile(const char *filename)
1254 {
1255         int fd;
1256         char *output=NULL;
1257         struct stat filesize;
1258         int count=0;
1259         int res;
1260         if(stat(filename,&filesize)== -1){
1261                 ast_log(LOG_WARNING,"Error can't stat %s\n", filename);
1262                 return NULL;
1263         }
1264         count=filesize.st_size + 1;
1265         fd = open(filename, O_RDONLY);
1266         if (fd < 0) {
1267                 ast_log(LOG_WARNING, "Cannot open file '%s' for reading: %s\n", filename, strerror(errno));
1268                 return NULL;
1269         }
1270         if ((output = ast_malloc(count))) {
1271                 res = read(fd, output, count - 1);
1272                 if (res == count - 1) {
1273                         output[res] = '\0';
1274                 } else {
1275                         ast_log(LOG_WARNING, "Short read of %s (%d of %d): %s\n", filename, res, count -  1, strerror(errno));
1276                         free(output);
1277                         output = NULL;
1278                 }
1279         }
1280         close(fd);
1281         return output;
1282 }
1283
1284 int ast_app_parse_options(const struct ast_app_option *options, struct ast_flags *flags, char **args, char *optstr)
1285 {
1286         char *s;
1287         int curarg;
1288         unsigned int argloc;
1289         char *arg;
1290         int res = 0;
1291
1292         ast_clear_flag(flags, AST_FLAGS_ALL);
1293
1294         if (!optstr)
1295                 return 0;
1296
1297         s = optstr;
1298         while (*s) {
1299                 curarg = *s++ & 0x7f;   /* the array (in app.h) has 128 entries */
1300                 ast_set_flag(flags, options[curarg].flag);
1301                 argloc = options[curarg].arg_index;
1302                 if (*s == '(') {
1303                         /* Has argument */
1304                         arg = ++s;
1305                         s = strchr(s, ')');
1306                         if (*s) {
1307                                 if (argloc)
1308                                         args[argloc - 1] = arg;
1309                                 *s++ = '\0';
1310                         } else {
1311                                 ast_log(LOG_WARNING, "Missing closing parenthesis for argument '%c' in string '%s'\n", curarg, arg);
1312                                 res = -1;
1313                         }
1314                 } else if (argloc) {
1315                         args[argloc - 1] = NULL;
1316                 }
1317         }
1318
1319         return res;
1320 }