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 "asterisk.h"
  27
  28 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  29
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <sys/time.h>
  34 #include <signal.h>
  35 #include <errno.h>
  36 #include <unistd.h>
  37 #include <dirent.h>
  38 #include <sys/types.h>
  39 #include <sys/stat.h>
  40 #include <regex.h>
  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 /*! \param timeout set timeout to 0 for "standard" timeouts. Set timeout to -1 for
 103    "ludicrous time" (essentially never times out) */
 104 int ast_app_getdata(struct ast_channel *c, char *prompt, char *s, int maxlen, int timeout)
 105 {
 106         int res,to,fto;
 107         /* XXX Merge with full version? XXX */
 108         if (maxlen)
 109                 s[0] = '\0';
 110         if (prompt) {
 111                 res = ast_streamfile(c, prompt, c->language);
 112                 if (res < 0)
 113                         return res;
 114         }
 115         fto = c->pbx ? c->pbx->rtimeout * 1000 : 6000;
 116         to = c->pbx ? c->pbx->dtimeout * 1000 : 2000;
 117
 118         if (timeout > 0)
 119                 fto = to = timeout;
 120         if (timeout < 0)
 121                 fto = to = 1000000000;
 122         res = ast_readstring(c, s, maxlen, to, fto, "#");
 123         return res;
 124 }
 125
 126
 127 int ast_app_getdata_full(struct ast_channel *c, char *prompt, char *s, int maxlen, int timeout, int audiofd, int ctrlfd)
 128 {
 129         int res, to, fto;
 130         if (prompt) {
 131                 res = ast_streamfile(c, prompt, c->language);
 132                 if (res < 0)
 133                         return res;
 134         }
 135         fto = 6000;
 136         to = 2000;
 137         if (timeout > 0)
 138                 fto = to = timeout;
 139         if (timeout < 0)
 140                 fto = to = 1000000000;
 141         res = ast_readstring_full(c, s, maxlen, to, fto, "#", audiofd, ctrlfd);
 142         return res;
 143 }
 144
 145 static int (*ast_has_voicemail_func)(const char *mailbox, const char *folder) = NULL;
 146 static int (*ast_inboxcount_func)(const char *mailbox, int *newmsgs, int *oldmsgs) = NULL;
 147 static int (*ast_messagecount_func)(const char *context, const char *mailbox, const char *folder) = NULL;
 148
 149 void ast_install_vm_functions(int (*has_voicemail_func)(const char *mailbox, const char *folder),
 150                               int (*inboxcount_func)(const char *mailbox, int *newmsgs, int *oldmsgs),
 151                               int (*messagecount_func)(const char *context, const char *mailbox, const char *folder))
 152 {
 153         ast_has_voicemail_func = has_voicemail_func;
 154         ast_inboxcount_func = inboxcount_func;
 155         ast_messagecount_func = messagecount_func;
 156 }
 157
 158 void ast_uninstall_vm_functions(void)
 159 {
 160         ast_has_voicemail_func = NULL;
 161         ast_inboxcount_func = NULL;
 162         ast_messagecount_func = NULL;
 163 }
 164
 165 int ast_app_has_voicemail(const char *mailbox, const char *folder)
 166 {
 167         static int warned = 0;
 168         if (ast_has_voicemail_func)
 169                 return ast_has_voicemail_func(mailbox, folder);
 170
 171         if ((option_verbose > 2) && !warned) {
 172                 ast_verbose(VERBOSE_PREFIX_3 "Message check requested for mailbox %s/folder %s but voicemail not loaded.\n", mailbox, folder ? folder : "INBOX");
 173                 warned++;
 174         }
 175         return 0;
 176 }
 177
 178
 179 int ast_app_inboxcount(const char *mailbox, int *newmsgs, int *oldmsgs)
 180 {
 181         static int warned = 0;
 182         if (newmsgs)
 183                 *newmsgs = 0;
 184         if (oldmsgs)
 185                 *oldmsgs = 0;
 186         if (ast_inboxcount_func)
 187                 return ast_inboxcount_func(mailbox, newmsgs, oldmsgs);
 188
 189         if (!warned && (option_verbose > 2)) {
 190                 warned++;
 191                 ast_verbose(VERBOSE_PREFIX_3 "Message count requested for mailbox %s but voicemail not loaded.\n", mailbox);
 192         }
 193
 194         return 0;
 195 }
 196
 197 int ast_app_messagecount(const char *context, const char *mailbox, const char *folder)
 198 {
 199         static int warned = 0;
 200         if (ast_messagecount_func)
 201                 return ast_messagecount_func(context, mailbox, folder);
 202
 203         if (!warned && (option_verbose > 2)) {
 204                 warned++;
 205                 ast_verbose(VERBOSE_PREFIX_3 "Message count requested for mailbox %s@%s/%s but voicemail not loaded.\n", mailbox, context, folder);
 206         }
 207
 208         return 0;
 209 }
 210
 211 int ast_dtmf_stream(struct ast_channel *chan, struct ast_channel *peer, const char *digits, int between)
 212 {
 213         const char *ptr;
 214         int res = 0;
 215         struct ast_frame f = {
 216                 .frametype = AST_FRAME_DTMF,
 217                 .src = "ast_dtmf_stream"
 218         };
 219
 220         if (!between)
 221                 between = 100;
 222
 223         if (peer)
 224                 res = ast_autoservice_start(peer);
 225
 226         if (!res)
 227                 res = ast_waitfor(chan, 100);
 228
 229         /* ast_waitfor will return the number of remaining ms on success */
 230         if (res < 0)
 231                 return res;
 232
 233         for (ptr = digits; *ptr; ptr++) {
 234                 if (*ptr == 'w') {
 235                         /* 'w' -- wait half a second */
 236                         if ((res = ast_safe_sleep(chan, 500)))
 237                                 break;
 238                 } else if (strchr("0123456789*#abcdfABCDF", *ptr)) {
 239                         /* Character represents valid DTMF */
 240                         if (*ptr == 'f' || *ptr == 'F') {
 241                                 /* ignore return values if not supported by channel */
 242                                 ast_indicate(chan, AST_CONTROL_FLASH);
 243                         } else {
 244                                 f.subclass = *ptr;
 245                                 if ((res = ast_write(chan, &f)))
 246                                         break;
 247                         }
 248                         /* pause between digits */
 249                         if ((res = ast_safe_sleep(chan, between)))
 250                                 break;
 251                 } else
 252                         ast_log(LOG_WARNING, "Illegal DTMF character '%c' in string. (0-9*#aAbBcCdD allowed)\n",*ptr);
 253         }
 254
 255         if (peer) {
 256                 /* Stop autoservice on the peer channel, but don't overwrite any error condition
 257                    that has occurred previously while acting on the primary channel */
 258                 if (ast_autoservice_stop(peer) && !res)
 259                         res = -1;
 260         }
 261
 262         return res;
 263 }
 264
 265 struct linear_state {
 266         int fd;
 267         int autoclose;
 268         int allowoverride;
 269         int origwfmt;
 270 };
 271
 272 static void linear_release(struct ast_channel *chan, void *params)
 273 {
 274         struct linear_state *ls = params;
 275         if (ls->origwfmt && ast_set_write_format(chan, ls->origwfmt)) {
 276                 ast_log(LOG_WARNING, "Unable to restore channel '%s' to format '%d'\n", chan->name, ls->origwfmt);
 277         }
 278         if (ls->autoclose)
 279                 close(ls->fd);
 280         free(params);
 281 }
 282
 283 static int linear_generator(struct ast_channel *chan, void *data, int len, int samples)
 284 {
 285         struct ast_frame f;
 286         short buf[2048 + AST_FRIENDLY_OFFSET / 2];
 287         struct linear_state *ls = data;
 288         int res;
 289         len = samples * 2;
 290         if (len > sizeof(buf) - AST_FRIENDLY_OFFSET) {
 291                 ast_log(LOG_WARNING, "Can't generate %d bytes of data!\n" ,len);
 292                 len = sizeof(buf) - AST_FRIENDLY_OFFSET;
 293         }
 294         memset(&f, 0, sizeof(f));
 295         res = read(ls->fd, buf + AST_FRIENDLY_OFFSET/2, len);
 296         if (res > 0) {
 297                 f.frametype = AST_FRAME_VOICE;
 298                 f.subclass = AST_FORMAT_SLINEAR;
 299                 f.data = buf + AST_FRIENDLY_OFFSET/2;
 300                 f.datalen = res;
 301                 f.samples = res / 2;
 302                 f.offset = AST_FRIENDLY_OFFSET;
 303                 ast_write(chan, &f);
 304                 if (res == len)
 305                         return 0;
 306         }
 307         return -1;
 308 }
 309
 310 static void *linear_alloc(struct ast_channel *chan, void *params)
 311 {
 312         struct linear_state *ls;
 313         /* In this case, params is already malloc'd */
 314         if (params) {
 315                 ls = params;
 316                 if (ls->allowoverride)
 317                         ast_set_flag(chan, AST_FLAG_WRITE_INT);
 318                 else
 319                         ast_clear_flag(chan, AST_FLAG_WRITE_INT);
 320                 ls->origwfmt = chan->writeformat;
 321                 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR)) {
 322                         ast_log(LOG_WARNING, "Unable to set '%s' to linear format (write)\n", chan->name);
 323                         free(ls);
 324                         ls = params = NULL;
 325                 }
 326         }
 327         return params;
 328 }
 329
 330 static struct ast_generator linearstream =
 331 {
 332         alloc: linear_alloc,
 333         release: linear_release,
 334         generate: linear_generator,
 335 };
 336
 337 int ast_linear_stream(struct ast_channel *chan, const char *filename, int fd, int allowoverride)
 338 {
 339         struct linear_state *lin;
 340         char tmpf[256];
 341         int res = -1;
 342         int autoclose = 0;
 343         if (fd < 0) {
 344                 if (ast_strlen_zero(filename))
 345                         return -1;
 346                 autoclose = 1;
 347                 if (filename[0] == '/')
 348                         ast_copy_string(tmpf, filename, sizeof(tmpf));
 349                 else
 350                         snprintf(tmpf, sizeof(tmpf), "%s/%s/%s", (char *)ast_config_AST_DATA_DIR, "sounds", filename);
 351                 fd = open(tmpf, O_RDONLY);
 352                 if (fd < 0){
 353                         ast_log(LOG_WARNING, "Unable to open file '%s': %s\n", tmpf, strerror(errno));
 354                         return -1;
 355                 }
 356         }
 357         if ((lin = ast_calloc(1, sizeof(*lin)))) {
 358                 lin->fd = fd;
 359                 lin->allowoverride = allowoverride;
 360                 lin->autoclose = autoclose;
 361                 res = ast_activate_generator(chan, &linearstream, lin);
 362         }
 363         return res;
 364 }
 365
 366 int ast_control_streamfile(struct ast_channel *chan, const char *file,
 367                            const char *fwd, const char *rev,
 368                            const char *stop, const char *pause,
 369                            const char *restart, int skipms)
 370 {
 371         char *breaks = NULL;
 372         char *end = NULL;
 373         int blen = 2;
 374         int res;
 375         long pause_restart_point = 0;
 376
 377         if (stop)
 378                 blen += strlen(stop);
 379         if (pause)
 380                 blen += strlen(pause);
 381         if (restart)
 382                 blen += strlen(restart);
 383
 384         if (blen > 2) {
 385                 breaks = alloca(blen + 1);
 386                 breaks[0] = '\0';
 387                 if (stop)
 388                         strcat(breaks, stop);
 389                 if (pause)
 390                         strcat(breaks, pause);
 391                 if (restart)
 392                         strcat(breaks, restart);
 393         }
 394         if (chan->_state != AST_STATE_UP)
 395                 res = ast_answer(chan);
 396
 397         if (file) {
 398                 if ((end = strchr(file,':'))) {
 399                         if (!strcasecmp(end, ":end")) {
 400                                 *end = '\0';
 401                                 end++;
 402                         }
 403                 }
 404         }
 405
 406         for (;;) {
 407                 ast_stopstream(chan);
 408                 res = ast_streamfile(chan, file, chan->language);
 409                 if (!res) {
 410                         if (pause_restart_point) {
 411                                 ast_seekstream(chan->stream, pause_restart_point, SEEK_SET);
 412                                 pause_restart_point = 0;
 413                         }
 414                         else if (end) {
 415                                 ast_seekstream(chan->stream, 0, SEEK_END);
 416                                 end = NULL;
 417                         };
 418                         res = ast_waitstream_fr(chan, breaks, fwd, rev, skipms);
 419                 }
 420
 421                 if (res < 1)
 422                         break;
 423
 424                 /* We go at next loop if we got the restart char */
 425                 if (restart && strchr(restart, res)) {
 426                         ast_log(LOG_DEBUG, "we'll restart the stream here at next loop\n");
 427                         pause_restart_point = 0;
 428                         continue;
 429                 }
 430
 431                 if (pause && strchr(pause, res)) {
 432                         pause_restart_point = ast_tellstream(chan->stream);
 433                         for (;;) {
 434                                 ast_stopstream(chan);
 435                                 res = ast_waitfordigit(chan, 1000);
 436                                 if (!res)
 437                                         continue;
 438                                 else if (res == -1 || strchr(pause, res) || (stop && strchr(stop, res)))
 439                                         break;
 440                         }
 441                         if (res == *pause) {
 442                                 res = 0;
 443                                 continue;
 444                         }
 445                 }
 446
 447                 if (res == -1)
 448                         break;
 449
 450                 /* if we get one of our stop chars, return it to the calling function */
 451                 if (stop && strchr(stop, res))
 452                         break;
 453         }
 454
 455         ast_stopstream(chan);
 456
 457         return res;
 458 }
 459
 460 int ast_play_and_wait(struct ast_channel *chan, const char *fn)
 461 {
 462         int d;
 463         d = ast_streamfile(chan, fn, chan->language);
 464         if (d)
 465                 return d;
 466         d = ast_waitstream(chan, AST_DIGIT_ANY);
 467         ast_stopstream(chan);
 468         return d;
 469 }
 470
 471 static int global_silence_threshold = 128;
 472 static int global_maxsilence = 0;
 473
 474 /*! Optionally play a sound file or a beep, then record audio and video from the channel.
 475  * @param chan Channel to playback to/record from.
 476  * @param playfile Filename of sound to play before recording begins.
 477  * @param recordfile Filename to record to.
 478  * @param maxtime Maximum length of recording (in milliseconds).
 479  * @param fmt Format(s) to record message in. Multiple formats may be specified by separating them with a '|'.
 480  * @param duration Where to store actual length of the recorded message (in milliseconds).
 481  * @param beep Whether to play a beep before starting to record.
 482  * @param silencethreshold
 483  * @param maxsilence Length of silence that will end a recording (in milliseconds).
 484  * @param path Optional filesystem path to unlock.
 485  * @param prepend If true, prepend the recorded audio to an existing file.
 486  * @param acceptdtmf DTMF digits that will end the recording.
 487  * @param canceldtmf DTMF digits that will cancel the recording.
 488  */
 489
 490 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)
 491 {
 492         int d = 0;
 493         char *fmts;
 494         char comment[256];
 495         int x, fmtcnt = 1, res = -1, outmsg = 0;
 496         struct ast_filestream *others[MAX_OTHER_FORMATS];
 497         char *sfmt[MAX_OTHER_FORMATS];
 498         char *stringp = NULL;
 499         time_t start, end;
 500         struct ast_dsp *sildet = NULL;   /* silence detector dsp */
 501         int totalsilence = 0;
 502         int rfmt = 0;
 503         struct ast_silence_generator *silgen = NULL;
 504         char prependfile[80];
 505
 506         if (silencethreshold < 0)
 507                 silencethreshold = global_silence_threshold;
 508
 509         if (maxsilence < 0)
 510                 maxsilence = global_maxsilence;
 511
 512         /* barf if no pointer passed to store duration in */
 513         if (duration == NULL) {
 514                 ast_log(LOG_WARNING, "Error play_and_record called without duration pointer\n");
 515                 return -1;
 516         }
 517
 518         ast_log(LOG_DEBUG,"play_and_record: %s, %s, '%s'\n", playfile ? playfile : "<None>", recordfile, fmt);
 519         snprintf(comment, sizeof(comment), "Playing %s, Recording to: %s on %s\n", playfile ? playfile : "<None>", recordfile, chan->name);
 520
 521         if (playfile || beep) {
 522                 if (!beep)
 523                         d = ast_play_and_wait(chan, playfile);
 524                 if (d > -1)
 525                         d = ast_stream_and_wait(chan, "beep", chan->language, "");
 526                 if (d < 0)
 527                         return -1;
 528         }
 529
 530         if (prepend) {
 531                 ast_copy_string(prependfile, recordfile, sizeof(prependfile));
 532                 strncat(prependfile, "-prepend", sizeof(prependfile) - strlen(prependfile) - 1);
 533         }
 534
 535         fmts = ast_strdupa(fmt);
 536
 537         stringp = fmts;
 538         strsep(&stringp, "|");
 539         ast_log(LOG_DEBUG, "Recording Formats: sfmts=%s\n", fmts);
 540         sfmt[0] = ast_strdupa(fmts);
 541
 542         while ((fmt = strsep(&stringp, "|"))) {
 543                 if (fmtcnt > MAX_OTHER_FORMATS - 1) {
 544                         ast_log(LOG_WARNING, "Please increase MAX_OTHER_FORMATS in app.c\n");
 545                         break;
 546                 }
 547                 sfmt[fmtcnt++] = ast_strdupa(fmt);
 548         }
 549
 550         end = start = time(NULL);  /* pre-initialize end to be same as start in case we never get into loop */
 551         for (x = 0; x < fmtcnt; x++) {
 552                 others[x] = ast_writefile(prepend ? prependfile : recordfile, sfmt[x], comment, O_TRUNC, 0, 0700);
 553                 if (option_verbose > 2)
 554                         ast_verbose(VERBOSE_PREFIX_3 "x=%d, open writing:  %s format: %s, %p\n", x, prepend ? prependfile : recordfile, sfmt[x], others[x]);
 555
 556                 if (!others[x])
 557                         break;
 558         }
 559
 560         if (path)
 561                 ast_unlock_path(path);
 562
 563         if (maxsilence > 0) {
 564                 sildet = ast_dsp_new(); /* Create the silence detector */
 565                 if (!sildet) {
 566                         ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
 567                         return -1;
 568                 }
 569                 ast_dsp_set_threshold(sildet, silencethreshold);
 570                 rfmt = chan->readformat;
 571                 res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
 572                 if (res < 0) {
 573                         ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
 574                         ast_dsp_free(sildet);
 575                         return -1;
 576                 }
 577         }
 578
 579         if (!prepend) {
 580                 /* Request a video update */
 581                 ast_indicate(chan, AST_CONTROL_VIDUPDATE);
 582
 583                 if (ast_opt_transmit_silence)
 584                         silgen = ast_channel_start_silence_generator(chan);
 585         }
 586
 587         if (x == fmtcnt) {
 588                 /* Loop forever, writing the packets we read to the writer(s), until
 589                    we read a digit or get a hangup */
 590                 struct ast_frame *f;
 591                 for (;;) {
 592                         res = ast_waitfor(chan, 2000);
 593                         if (!res) {
 594                                 ast_log(LOG_DEBUG, "One waitfor failed, trying another\n");
 595                                 /* Try one more time in case of masq */
 596                                 res = ast_waitfor(chan, 2000);
 597                                 if (!res) {
 598                                         ast_log(LOG_WARNING, "No audio available on %s??\n", chan->name);
 599                                         res = -1;
 600                                 }
 601                         }
 602
 603                         if (res < 0) {
 604                                 f = NULL;
 605                                 break;
 606                         }
 607                         f = ast_read(chan);
 608                         if (!f)
 609                                 break;
 610                         if (f->frametype == AST_FRAME_VOICE) {
 611                                 /* write each format */
 612                                 for (x = 0; x < fmtcnt; x++) {
 613                                         if (prepend && !others[x])
 614                                                 break;
 615                                         res = ast_writestream(others[x], f);
 616                                 }
 617
 618                                 /* Silence Detection */
 619                                 if (maxsilence > 0) {
 620                                         int dspsilence = 0;
 621                                         ast_dsp_silence(sildet, f, &dspsilence);
 622                                         if (dspsilence)
 623                                                 totalsilence = dspsilence;
 624                                         else
 625                                                 totalsilence = 0;
 626
 627                                         if (totalsilence > maxsilence) {
 628                                                 /* Ended happily with silence */
 629                                                 if (option_verbose > 2)
 630                                                         ast_verbose( VERBOSE_PREFIX_3 "Recording automatically stopped after a silence of %d seconds\n", totalsilence/1000);
 631                                                 res = 'S';
 632                                                 outmsg = 2;
 633                                                 break;
 634                                         }
 635                                 }
 636                                 /* Exit on any error */
 637                                 if (res) {
 638                                         ast_log(LOG_WARNING, "Error writing frame\n");
 639                                         break;
 640                                 }
 641                         } else if (f->frametype == AST_FRAME_VIDEO) {
 642                                 /* Write only once */
 643                                 ast_writestream(others[0], f);
 644                         } else if (f->frametype == AST_FRAME_DTMF) {
 645                                 if (prepend) {
 646                                 /* stop recording with any digit */
 647                                         if (option_verbose > 2)
 648                                                 ast_verbose(VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
 649                                         res = 't';
 650                                         outmsg = 2;
 651                                         break;
 652                                 }
 653                                 if (strchr(acceptdtmf, f->subclass)) {
 654                                         if (option_verbose > 2)
 655                                                 ast_verbose(VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
 656                                         res = f->subclass;
 657                                         outmsg = 2;
 658                                         break;
 659                                 }
 660                                 if (strchr(canceldtmf, f->subclass)) {
 661                                         if (option_verbose > 2)
 662                                                 ast_verbose(VERBOSE_PREFIX_3 "User cancelled message by pressing %c\n", f->subclass);
 663                                         res = f->subclass;
 664                                         outmsg = 0;
 665                                         break;
 666                                 }
 667                         }
 668                         if (maxtime) {
 669                                 end = time(NULL);
 670                                 if (maxtime < (end - start)) {
 671                                         if (option_verbose > 2)
 672                                                 ast_verbose(VERBOSE_PREFIX_3 "Took too long, cutting it short...\n");
 673                                         res = 't';
 674                                         outmsg = 2;
 675                                         break;
 676                                 }
 677                         }
 678                         ast_frfree(f);
 679                 }
 680                 if (!f) {
 681                         if (option_verbose > 2)
 682                                 ast_verbose(VERBOSE_PREFIX_3 "User hung up\n");
 683                         res = -1;
 684                         outmsg = 1;
 685                 } else {
 686                         ast_frfree(f);
 687                 }
 688                 if (end == start)
 689                         end = time(NULL);
 690         } else {
 691                 ast_log(LOG_WARNING, "Error creating writestream '%s', format '%s'\n", recordfile, sfmt[x]);
 692         }
 693
 694         if (!prepend) {
 695                 if (silgen)
 696                         ast_channel_stop_silence_generator(chan, silgen);
 697         }
 698         *duration = end - start;
 699
 700         if (!prepend) {
 701                 for (x = 0; x < fmtcnt; x++) {
 702                         if (!others[x])
 703                                 break;
 704                         if (res > 0)
 705                                 ast_stream_rewind(others[x], totalsilence ? totalsilence - 200 : 200);
 706                         ast_truncstream(others[x]);
 707                         ast_closestream(others[x]);
 708                 }
 709         }
 710
 711         if (prepend && outmsg) {
 712                 struct ast_filestream *realfiles[MAX_OTHER_FORMATS];
 713                 struct ast_frame *fr;
 714
 715                 for (x = 0; x < fmtcnt; x++) {
 716                         snprintf(comment, sizeof(comment), "Opening the real file %s.%s\n", recordfile, sfmt[x]);
 717                         realfiles[x] = ast_readfile(recordfile, sfmt[x], comment, O_RDONLY, 0, 0);
 718                         if (!others[x] || !realfiles[x])
 719                                 break;
 720                         ast_stream_rewind(others[x], totalsilence ? totalsilence - 200 : 200);
 721                         ast_truncstream(others[x]);
 722                         /* add the original file too */
 723                         while ((fr = ast_readframe(realfiles[x]))) {
 724                                 ast_writestream(others[x], fr);
 725                                 ast_frfree(fr);
 726                         }
 727                         ast_closestream(others[x]);
 728                         ast_closestream(realfiles[x]);
 729                         ast_filerename(prependfile, recordfile, sfmt[x]);
 730                         if (option_verbose > 3)
 731                                 ast_verbose(VERBOSE_PREFIX_4 "Recording Format: sfmts=%s, prependfile %s, recordfile %s\n", sfmt[x], prependfile, recordfile);
 732                         ast_filedelete(prependfile, sfmt[x]);
 733                 }
 734         }
 735         if (rfmt && ast_set_read_format(chan, rfmt)) {
 736                 ast_log(LOG_WARNING, "Unable to restore format %s to channel '%s'\n", ast_getformatname(rfmt), chan->name);
 737         }
 738         if (outmsg == 2) {
 739                 ast_stream_and_wait(chan, "auth-thankyou", chan->language, "");
 740         }
 741         if (sildet)
 742                 ast_dsp_free(sildet);
 743         return res;
 744 }
 745
 746 static char default_acceptdtmf[] = "#";
 747 static char default_canceldtmf[] = "";
 748
 749 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)
 750 {
 751         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));
 752 }
 753
 754 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)
 755 {
 756         return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, 0, silencethreshold, maxsilence, path, 0, default_acceptdtmf, default_canceldtmf);
 757 }
 758
 759 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)
 760 {
 761         return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, beep, silencethreshold, maxsilence, NULL, 1, default_acceptdtmf, default_canceldtmf);
 762 }
 763
 764 /* Channel group core functions */
 765
 766 int ast_app_group_split_group(const char *data, char *group, int group_max, char *category, int category_max)
 767 {
 768         int res=0;
 769         char tmp[256];
 770         char *grp=NULL, *cat=NULL;
 771
 772         if (!ast_strlen_zero(data)) {
 773                 ast_copy_string(tmp, data, sizeof(tmp));
 774                 grp = tmp;
 775                 cat = strchr(tmp, '@');
 776                 if (cat) {
 777                         *cat = '\0';
 778                         cat++;
 779                 }
 780         }
 781
 782         if (!ast_strlen_zero(grp))
 783                 ast_copy_string(group, grp, group_max);
 784         else
 785                 res = -1;
 786
 787         if (cat)
 788                 snprintf(category, category_max, "%s_%s", GROUP_CATEGORY_PREFIX, cat);
 789         else
 790                 ast_copy_string(category, GROUP_CATEGORY_PREFIX, category_max);
 791
 792         return res;
 793 }
 794
 795 int ast_app_group_set_channel(struct ast_channel *chan, const char *data)
 796 {
 797         int res=0;
 798         char group[80] = "";
 799         char category[80] = "";
 800
 801         if (!ast_app_group_split_group(data, group, sizeof(group), category, sizeof(category))) {
 802                 pbx_builtin_setvar_helper(chan, category, group);
 803         } else
 804                 res = -1;
 805
 806         return res;
 807 }
 808
 809 int ast_app_group_get_count(const char *group, const char *category)
 810 {
 811         struct ast_channel *chan;
 812         int count = 0;
 813         const char *test;
 814         char cat[80];
 815         const char *s;
 816
 817         if (ast_strlen_zero(group))
 818                 return 0;
 819
 820         s = S_OR(category, GROUP_CATEGORY_PREFIX);
 821         ast_copy_string(cat, s, sizeof(cat));
 822
 823         chan = NULL;
 824         while ((chan = ast_channel_walk_locked(chan)) != NULL) {
 825                 test = pbx_builtin_getvar_helper(chan, cat);
 826                 if (test && !strcasecmp(test, group))
 827                         count++;
 828                 ast_channel_unlock(chan);
 829         }
 830
 831         return count;
 832 }
 833
 834 int ast_app_group_match_get_count(const char *groupmatch, const char *category)
 835 {
 836         regex_t regexbuf;
 837         struct ast_channel *chan;
 838         int count = 0;
 839         const char *test;
 840         char cat[80];
 841         const char *s;
 842
 843         if (ast_strlen_zero(groupmatch))
 844                 return 0;
 845
 846         /* if regex compilation fails, return zero matches */
 847         if (regcomp(&regexbuf, groupmatch, REG_EXTENDED | REG_NOSUB))
 848                 return 0;
 849
 850         s = S_OR(category, GROUP_CATEGORY_PREFIX);
 851         ast_copy_string(cat, s, sizeof(cat));
 852
 853         chan = NULL;
 854         while ((chan = ast_channel_walk_locked(chan)) != NULL) {
 855                 test = pbx_builtin_getvar_helper(chan, cat);
 856                 if (test && !regexec(&regexbuf, test, 0, NULL, 0))
 857                         count++;
 858                 ast_channel_unlock(chan);
 859         }
 860
 861         regfree(&regexbuf);
 862
 863         return count;
 864 }
 865
 866 unsigned int ast_app_separate_args(char *buf, char delim, char **array, int arraylen)
 867 {
 868         int argc;
 869         char *scan;
 870         int paren = 0, quote = 0;
 871
 872         if (!buf || !array || !arraylen)
 873                 return 0;
 874
 875         memset(array, 0, arraylen * sizeof(*array));
 876
 877         scan = buf;
 878
 879         for (argc = 0; *scan && (argc < arraylen - 1); argc++) {
 880                 array[argc] = scan;
 881                 for (; *scan; scan++) {
 882                         if (*scan == '(')
 883                                 paren++;
 884                         else if (*scan == ')') {
 885                                 if (paren)
 886                                         paren--;
 887                         } else if (*scan == '"') {
 888                                 quote = quote ? 0 : 1;
 889                                 /* Remove quote character from argument */
 890                                 memmove(scan, scan + 1, strlen(scan));
 891                                 scan--;
 892                         } else if (*scan == '\\') {
 893                                 /* Literal character, don't parse */
 894                                 memmove(scan, scan + 1, strlen(scan));
 895                         } else if ((*scan == delim) && !paren && !quote) {
 896                                 *scan++ = '\0';
 897                                 break;
 898                         }
 899                 }
 900         }
 901
 902         if (*scan)
 903                 array[argc++] = scan;
 904
 905         return argc;
 906 }
 907
 908 enum AST_LOCK_RESULT ast_lock_path(const char *path)
 909 {
 910         char *s;
 911         char *fs;
 912         int res;
 913         int fd;
 914         int lp = strlen(path);
 915         time_t start;
 916
 917         if (!(s = alloca(lp + 10)) || !(fs = alloca(lp + 20))) {
 918                 ast_log(LOG_WARNING, "Out of memory!\n");
 919                 return AST_LOCK_FAILURE;
 920         }
 921
 922         snprintf(fs, strlen(path) + 19, "%s/.lock-%08lx", path, ast_random());
 923         fd = open(fs, O_WRONLY | O_CREAT | O_EXCL, 0600);
 924         if (fd < 0) {
 925                 ast_log(LOG_ERROR, "Unable to create lock file '%s': %s\n", path, strerror(errno));
 926                 return AST_LOCK_PATH_NOT_FOUND;
 927         }
 928         close(fd);
 929
 930         snprintf(s, strlen(path) + 9, "%s/.lock", path);
 931         start = time(NULL);
 932         while (((res = link(fs, s)) < 0) && (errno == EEXIST) && (time(NULL) - start < 5))
 933                 usleep(1);
 934
 935         unlink(fs);
 936
 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                 ast_log(LOG_DEBUG, "Locked path '%s'\n", path);
 942                 return AST_LOCK_SUCCESS;
 943         }
 944 }
 945
 946 int ast_unlock_path(const char *path)
 947 {
 948         char *s;
 949         int res;
 950
 951         if (!(s = alloca(strlen(path) + 10))) {
 952                 ast_log(LOG_WARNING, "Out of memory!\n");
 953                 return -1;
 954         }
 955
 956         snprintf(s, strlen(path) + 9, "%s/%s", path, ".lock");
 957
 958         if ((res = unlink(s)))
 959                 ast_log(LOG_ERROR, "Could not unlock path '%s': %s\n", path, strerror(errno));
 960         else
 961                 ast_log(LOG_DEBUG, "Unlocked path '%s'\n", path);
 962
 963         return res;
 964 }
 965
 966 int ast_record_review(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, const char *path)
 967 {
 968         int silencethreshold = 128;
 969         int maxsilence=0;
 970         int res = 0;
 971         int cmd = 0;
 972         int max_attempts = 3;
 973         int attempts = 0;
 974         int recorded = 0;
 975         int message_exists = 0;
 976         /* Note that urgent and private are for flagging messages as such in the future */
 977
 978         /* barf if no pointer passed to store duration in */
 979         if (duration == NULL) {
 980                 ast_log(LOG_WARNING, "Error ast_record_review called without duration pointer\n");
 981                 return -1;
 982         }
 983
 984         cmd = '3';       /* Want to start by recording */
 985
 986         while ((cmd >= 0) && (cmd != 't')) {
 987                 switch (cmd) {
 988                 case '1':
 989                         if (!message_exists) {
 990                                 /* In this case, 1 is to record a message */
 991                                 cmd = '3';
 992                                 break;
 993                         } else {
 994                                 ast_stream_and_wait(chan, "vm-msgsaved", chan->language, "");
 995                                 cmd = 't';
 996                                 return res;
 997                         }
 998                 case '2':
 999                         /* Review */
1000                         ast_verbose(VERBOSE_PREFIX_3 "Reviewing the recording\n");
1001                         cmd = ast_stream_and_wait(chan, recordfile, chan->language, AST_DIGIT_ANY);
1002                         break;
1003                 case '3':
1004                         message_exists = 0;
1005                         /* Record */
1006                         if (recorded == 1)
1007                                 ast_verbose(VERBOSE_PREFIX_3 "Re-recording\n");
1008                         else
1009                                 ast_verbose(VERBOSE_PREFIX_3 "Recording\n");
1010                         recorded = 1;
1011                         cmd = ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, silencethreshold, maxsilence, path);
1012                         if (cmd == -1) {
1013                         /* User has hung up, no options to give */
1014                                 return cmd;
1015                         }
1016                         if (cmd == '0') {
1017                                 break;
1018                         } else if (cmd == '*') {
1019                                 break;
1020                         }
1021                         else {
1022                                 /* If all is well, a message exists */
1023                                 message_exists = 1;
1024                                 cmd = 0;
1025                         }
1026                         break;
1027                 case '4':
1028                 case '5':
1029                 case '6':
1030                 case '7':
1031                 case '8':
1032                 case '9':
1033                 case '*':
1034                 case '#':
1035                         cmd = ast_play_and_wait(chan, "vm-sorry");
1036                         break;
1037                 default:
1038                         if (message_exists) {
1039                                 cmd = ast_play_and_wait(chan, "vm-review");
1040                         }
1041                         else {
1042                                 cmd = ast_play_and_wait(chan, "vm-torerecord");
1043                                 if (!cmd)
1044                                         cmd = ast_waitfordigit(chan, 600);
1045                         }
1046
1047                         if (!cmd)
1048                                 cmd = ast_waitfordigit(chan, 6000);
1049                         if (!cmd) {
1050                                 attempts++;
1051                         }
1052                         if (attempts > max_attempts) {
1053                                 cmd = 't';
1054                         }
1055                 }
1056         }
1057         if (cmd == 't')
1058                 cmd = 0;
1059         return cmd;
1060 }
1061
1062 #define RES_UPONE (1 << 16)
1063 #define RES_EXIT  (1 << 17)
1064 #define RES_REPEAT (1 << 18)
1065 #define RES_RESTART ((1 << 19) | RES_REPEAT)
1066
1067 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata);
1068
1069 static int ivr_dispatch(struct ast_channel *chan, struct ast_ivr_option *option, char *exten, void *cbdata)
1070 {
1071         int res;
1072         int (*ivr_func)(struct ast_channel *, void *);
1073         char *c;
1074         char *n;
1075
1076         switch(option->action) {
1077         case AST_ACTION_UPONE:
1078                 return RES_UPONE;
1079         case AST_ACTION_EXIT:
1080                 return RES_EXIT | (((unsigned long)(option->adata)) & 0xffff);
1081         case AST_ACTION_REPEAT:
1082                 return RES_REPEAT | (((unsigned long)(option->adata)) & 0xffff);
1083         case AST_ACTION_RESTART:
1084                 return RES_RESTART ;
1085         case AST_ACTION_NOOP:
1086                 return 0;
1087         case AST_ACTION_BACKGROUND:
1088                 res = ast_stream_and_wait(chan, (char *)option->adata, chan->language, AST_DIGIT_ANY);
1089                 if (res < 0) {
1090                         ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
1091                         res = 0;
1092                 }
1093                 return res;
1094         case AST_ACTION_PLAYBACK:
1095                 res = ast_stream_and_wait(chan, (char *)option->adata, chan->language, "");
1096                 if (res < 0) {
1097                         ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
1098                         res = 0;
1099                 }
1100                 return res;
1101         case AST_ACTION_MENU:
1102                 res = ast_ivr_menu_run_internal(chan, (struct ast_ivr_menu *)option->adata, cbdata);
1103                 /* Do not pass entry errors back up, treaat ast though ti was an "UPONE" */
1104                 if (res == -2)
1105                         res = 0;
1106                 return res;
1107         case AST_ACTION_WAITOPTION:
1108                 res = ast_waitfordigit(chan, 1000 * (chan->pbx ? chan->pbx->rtimeout : 10));
1109                 if (!res)
1110                         return 't';
1111                 return res;
1112         case AST_ACTION_CALLBACK:
1113                 ivr_func = option->adata;
1114                 res = ivr_func(chan, cbdata);
1115                 return res;
1116         case AST_ACTION_TRANSFER:
1117                 res = ast_parseable_goto(chan, option->adata);
1118                 return 0;
1119         case AST_ACTION_PLAYLIST:
1120         case AST_ACTION_BACKLIST:
1121                 res = 0;
1122                 c = ast_strdupa(option->adata);
1123                 while ((n = strsep(&c, ";"))) {
1124                         if ((res = ast_stream_and_wait(chan, n, chan->language,
1125                                         (option->action == AST_ACTION_BACKLIST) ? AST_DIGIT_ANY : "")))
1126                                 break;
1127                 }
1128                 ast_stopstream(chan);
1129                 return res;
1130         default:
1131                 ast_log(LOG_NOTICE, "Unknown dispatch function %d, ignoring!\n", option->action);
1132                 return 0;
1133         };
1134         return -1;
1135 }
1136
1137 static int option_exists(struct ast_ivr_menu *menu, char *option)
1138 {
1139         int x;
1140         for (x = 0; menu->options[x].option; x++)
1141                 if (!strcasecmp(menu->options[x].option, option))
1142                         return x;
1143         return -1;
1144 }
1145
1146 static int option_matchmore(struct ast_ivr_menu *menu, char *option)
1147 {
1148         int x;
1149         for (x = 0; menu->options[x].option; x++)
1150                 if ((!strncasecmp(menu->options[x].option, option, strlen(option))) &&
1151                                 (menu->options[x].option[strlen(option)]))
1152                         return x;
1153         return -1;
1154 }
1155
1156 static int read_newoption(struct ast_channel *chan, struct ast_ivr_menu *menu, char *exten, int maxexten)
1157 {
1158         int res=0;
1159         int ms;
1160         while (option_matchmore(menu, exten)) {
1161                 ms = chan->pbx ? chan->pbx->dtimeout : 5000;
1162                 if (strlen(exten) >= maxexten - 1)
1163                         break;
1164                 res = ast_waitfordigit(chan, ms);
1165                 if (res < 1)
1166                         break;
1167                 exten[strlen(exten) + 1] = '\0';
1168                 exten[strlen(exten)] = res;
1169         }
1170         return res > 0 ? 0 : res;
1171 }
1172
1173 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
1174 {
1175         /* Execute an IVR menu structure */
1176         int res=0;
1177         int pos = 0;
1178         int retries = 0;
1179         char exten[AST_MAX_EXTENSION] = "s";
1180         if (option_exists(menu, "s") < 0) {
1181                 strcpy(exten, "g");
1182                 if (option_exists(menu, "g") < 0) {
1183                         ast_log(LOG_WARNING, "No 's' nor 'g' extension in menu '%s'!\n", menu->title);
1184                         return -1;
1185                 }
1186         }
1187         while(!res) {
1188                 while(menu->options[pos].option) {
1189                         if (!strcasecmp(menu->options[pos].option, exten)) {
1190                                 res = ivr_dispatch(chan, menu->options + pos, exten, cbdata);
1191                                 ast_log(LOG_DEBUG, "IVR Dispatch of '%s' (pos %d) yields %d\n", exten, pos, res);
1192                                 if (res < 0)
1193                                         break;
1194                                 else if (res & RES_UPONE)
1195                                         return 0;
1196                                 else if (res & RES_EXIT)
1197                                         return res;
1198                                 else if (res & RES_REPEAT) {
1199                                         int maxretries = res & 0xffff;
1200                                         if ((res & RES_RESTART) == RES_RESTART) {
1201                                                 retries = 0;
1202                                         } else
1203                                                 retries++;
1204                                         if (!maxretries)
1205                                                 maxretries = 3;
1206                                         if ((maxretries > 0) && (retries >= maxretries)) {
1207                                                 ast_log(LOG_DEBUG, "Max retries %d exceeded\n", maxretries);
1208                                                 return -2;
1209                                         } else {
1210                                                 if (option_exists(menu, "g") > -1)
1211                                                         strcpy(exten, "g");
1212                                                 else if (option_exists(menu, "s") > -1)
1213                                                         strcpy(exten, "s");
1214                                         }
1215                                         pos = 0;
1216                                         continue;
1217                                 } else if (res && strchr(AST_DIGIT_ANY, res)) {
1218                                         ast_log(LOG_DEBUG, "Got start of extension, %c\n", res);
1219                                         exten[1] = '\0';
1220                                         exten[0] = res;
1221                                         if ((res = read_newoption(chan, menu, exten, sizeof(exten))))
1222                                                 break;
1223                                         if (option_exists(menu, exten) < 0) {
1224                                                 if (option_exists(menu, "i")) {
1225                                                         ast_log(LOG_DEBUG, "Invalid extension entered, going to 'i'!\n");
1226                                                         strcpy(exten, "i");
1227                                                         pos = 0;
1228                                                         continue;
1229                                                 } else {
1230                                                         ast_log(LOG_DEBUG, "Aborting on invalid entry, with no 'i' option!\n");
1231                                                         res = -2;
1232                                                         break;
1233                                                 }
1234                                         } else {
1235                                                 ast_log(LOG_DEBUG, "New existing extension: %s\n", exten);
1236                                                 pos = 0;
1237                                                 continue;
1238                                         }
1239                                 }
1240                         }
1241                         pos++;
1242                 }
1243                 ast_log(LOG_DEBUG, "Stopping option '%s', res is %d\n", exten, res);
1244                 pos = 0;
1245                 if (!strcasecmp(exten, "s"))
1246                         strcpy(exten, "g");
1247                 else
1248                         break;
1249         }
1250         return res;
1251 }
1252
1253 int ast_ivr_menu_run(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
1254 {
1255         int res = ast_ivr_menu_run_internal(chan, menu, cbdata);
1256         /* Hide internal coding */
1257         return res > 0 ? 0 : res;
1258 }
1259
1260 char *ast_read_textfile(const char *filename)
1261 {
1262         int fd;
1263         char *output = NULL;
1264         struct stat filesize;
1265         int count = 0;
1266         int res;
1267         if (stat(filename, &filesize) == -1) {
1268                 ast_log(LOG_WARNING, "Error can't stat %s\n", filename);
1269                 return NULL;
1270         }
1271         count = filesize.st_size + 1;
1272         fd = open(filename, O_RDONLY);
1273         if (fd < 0) {
1274                 ast_log(LOG_WARNING, "Cannot open file '%s' for reading: %s\n", filename, strerror(errno));
1275                 return NULL;
1276         }
1277         if ((output = ast_malloc(count))) {
1278                 res = read(fd, output, count - 1);
1279                 if (res == count - 1) {
1280                         output[res] = '\0';
1281                 } else {
1282                         ast_log(LOG_WARNING, "Short read of %s (%d of %d): %s\n", filename, res, count - 1, strerror(errno));
1283                         free(output);
1284                         output = NULL;
1285                 }
1286         }
1287         close(fd);
1288         return output;
1289 }
1290
1291 int ast_app_parse_options(const struct ast_app_option *options, struct ast_flags *flags, char **args, char *optstr)
1292 {
1293         char *s;
1294         int curarg;
1295         unsigned int argloc;
1296         char *arg;
1297         int res = 0;
1298
1299         ast_clear_flag(flags, AST_FLAGS_ALL);
1300
1301         if (!optstr)
1302                 return 0;
1303
1304         s = optstr;
1305         while (*s) {
1306                 curarg = *s++ & 0x7f;   /* the array (in app.h) has 128 entries */
1307                 ast_set_flag(flags, options[curarg].flag);
1308                 argloc = options[curarg].arg_index;
1309                 if (*s == '(') {
1310                         /* Has argument */
1311                         arg = ++s;
1312                         s = strchr(s, ')');
1313                         if (*s) {
1314                                 if (argloc)
1315                                         args[argloc - 1] = arg;
1316                                 *s++ = '\0';
1317                         } else {
1318                                 ast_log(LOG_WARNING, "Missing closing parenthesis for argument '%c' in string '%s'\n", curarg, arg);
1319                                 res = -1;
1320                         }
1321                 } else if (argloc) {
1322                         args[argloc - 1] = NULL;
1323                 }
1324         }
1325
1326         return res;
1327 }
1328