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 int ast_app_getvoice(struct ast_channel *c, char *dest, char *dstfmt, char *prompt, int silence, int maxsec)
 148 {
 149         int res;
 150         struct ast_filestream *writer;
 151         int rfmt;
 152         int totalms=0, total;
 153
 154         struct ast_frame *f;
 155         struct ast_dsp *sildet;
 156         /* Play prompt if requested */
 157         if (prompt) {
 158                 res = ast_stream_and_wait(c, prompt, c->language, "");
 159                 if (res < 0)
 160                         return res;
 161         }
 162         rfmt = c->readformat;
 163         res = ast_set_read_format(c, AST_FORMAT_SLINEAR);
 164         if (res < 0) {
 165                 ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
 166                 return -1;
 167         }
 168         sildet = ast_dsp_new();
 169         if (!sildet) {
 170                 ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
 171                 return -1;
 172         }
 173         writer = ast_writefile(dest, dstfmt, "Voice file", 0, 0, 0666);
 174         if (!writer) {
 175                 ast_log(LOG_WARNING, "Unable to open file '%s' in format '%s' for writing\n", dest, dstfmt);
 176                 ast_dsp_free(sildet);
 177                 return -1;
 178         }
 179         for(;;) {
 180                 if ((res = ast_waitfor(c, 2000)) < 0) {
 181                         ast_log(LOG_NOTICE, "Waitfor failed while recording file '%s' format '%s'\n", dest, dstfmt);
 182                         break;
 183                 }
 184                 if (res) {
 185                         f = ast_read(c);
 186                         if (!f) {
 187                                 ast_log(LOG_NOTICE, "Hungup while recording file '%s' format '%s'\n", dest, dstfmt);
 188                                 break;
 189                         }
 190                         if ((f->frametype == AST_FRAME_DTMF) && (f->subclass == '#')) {
 191                                 /* Ended happily with DTMF */
 192                                 ast_frfree(f);
 193                                 break;
 194                         } else if (f->frametype == AST_FRAME_VOICE) {
 195                                 ast_dsp_silence(sildet, f, &total);
 196                                 if (total > silence) {
 197                                         /* Ended happily with silence */
 198                                         ast_frfree(f);
 199                                         break;
 200                                 }
 201                                 totalms += f->samples / 8;
 202                                 if (totalms > maxsec * 1000) {
 203                                         /* Ended happily with too much stuff */
 204                                         ast_log(LOG_NOTICE, "Constraining voice on '%s' to %d seconds\n", c->name, maxsec);
 205                                         ast_frfree(f);
 206                                         break;
 207                                 }
 208                                 res = ast_writestream(writer, f);
 209                                 if (res < 0) {
 210                                         ast_log(LOG_WARNING, "Failed to write to stream at %s!\n", dest);
 211                                         ast_frfree(f);
 212                                         break;
 213                                 }
 214
 215                         }
 216                         ast_frfree(f);
 217                 }
 218         }
 219         res = ast_set_read_format(c, rfmt);
 220         if (res)
 221                 ast_log(LOG_WARNING, "Unable to restore read format on '%s'\n", c->name);
 222         ast_dsp_free(sildet);
 223         ast_closestream(writer);
 224         return 0;
 225 }
 226
 227 static int (*ast_has_voicemail_func)(const char *mailbox, const char *folder) = NULL;
 228 static int (*ast_messagecount_func)(const char *mailbox, int *newmsgs, int *oldmsgs) = NULL;
 229
 230 void ast_install_vm_functions(int (*has_voicemail_func)(const char *mailbox, const char *folder),
 231                               int (*messagecount_func)(const char *mailbox, int *newmsgs, int *oldmsgs))
 232 {
 233         ast_has_voicemail_func = has_voicemail_func;
 234         ast_messagecount_func = messagecount_func;
 235 }
 236
 237 void ast_uninstall_vm_functions(void)
 238 {
 239         ast_has_voicemail_func = NULL;
 240         ast_messagecount_func = NULL;
 241 }
 242
 243 int ast_app_has_voicemail(const char *mailbox, const char *folder)
 244 {
 245         static int warned = 0;
 246         if (ast_has_voicemail_func)
 247                 return ast_has_voicemail_func(mailbox, folder);
 248
 249         if ((option_verbose > 2) && !warned) {
 250                 ast_verbose(VERBOSE_PREFIX_3 "Message check requested for mailbox %s/folder %s but voicemail not loaded.\n", mailbox, folder ? folder : "INBOX");
 251                 warned++;
 252         }
 253         return 0;
 254 }
 255
 256
 257 int ast_app_messagecount(const char *mailbox, int *newmsgs, int *oldmsgs)
 258 {
 259         static int warned = 0;
 260         if (newmsgs)
 261                 *newmsgs = 0;
 262         if (oldmsgs)
 263                 *oldmsgs = 0;
 264         if (ast_messagecount_func)
 265                 return ast_messagecount_func(mailbox, newmsgs, oldmsgs);
 266
 267         if (!warned && (option_verbose > 2)) {
 268                 warned++;
 269                 ast_verbose(VERBOSE_PREFIX_3 "Message count requested for mailbox %s but voicemail not loaded.\n", mailbox);
 270         }
 271
 272         return 0;
 273 }
 274
 275 int ast_dtmf_stream(struct ast_channel *chan, struct ast_channel *peer, const char *digits, int between)
 276 {
 277         const char *ptr;
 278         int res = 0;
 279         struct ast_frame f = {
 280                 .frametype = AST_FRAME_DTMF,
 281                 .src = "ast_dtmf_stream"
 282         };
 283
 284         if (!between)
 285                 between = 100;
 286
 287         if (peer)
 288                 res = ast_autoservice_start(peer);
 289
 290         if (!res)
 291                 res = ast_waitfor(chan, 100);
 292
 293         /* ast_waitfor will return the number of remaining ms on success */
 294         if (res < 0)
 295                 return res;
 296
 297         for (ptr = digits; *ptr; ptr++) {
 298                 if (*ptr == 'w') {
 299                         /* 'w' -- wait half a second */
 300                         if ((res = ast_safe_sleep(chan, 500)))
 301                                 break;
 302                 } else if (strchr("0123456789*#abcdfABCDF", *ptr)) {
 303                         /* Character represents valid DTMF */
 304                         if (*ptr == 'f' || *ptr == 'F') {
 305                                 /* ignore return values if not supported by channel */
 306                                 ast_indicate(chan, AST_CONTROL_FLASH);
 307                         } else {
 308                                 f.subclass = *ptr;
 309                                 if ((res = ast_write(chan, &f)))
 310                                         break;
 311                         }
 312                         /* pause between digits */
 313                         if ((res = ast_safe_sleep(chan, between)))
 314                                 break;
 315                 } else
 316                         ast_log(LOG_WARNING, "Illegal DTMF character '%c' in string. (0-9*#aAbBcCdD allowed)\n",*ptr);
 317         }
 318
 319         if (peer) {
 320                 /* Stop autoservice on the peer channel, but don't overwrite any error condition
 321                    that has occurred previously while acting on the primary channel */
 322                 if (ast_autoservice_stop(peer) && !res)
 323                         res = -1;
 324         }
 325
 326         return res;
 327 }
 328
 329 struct linear_state {
 330         int fd;
 331         int autoclose;
 332         int allowoverride;
 333         int origwfmt;
 334 };
 335
 336 static void linear_release(struct ast_channel *chan, void *params)
 337 {
 338         struct linear_state *ls = params;
 339         if (ls->origwfmt && ast_set_write_format(chan, ls->origwfmt)) {
 340                 ast_log(LOG_WARNING, "Unable to restore channel '%s' to format '%d'\n", chan->name, ls->origwfmt);
 341         }
 342         if (ls->autoclose)
 343                 close(ls->fd);
 344         free(params);
 345 }
 346
 347 static int linear_generator(struct ast_channel *chan, void *data, int len, int samples)
 348 {
 349         struct ast_frame f;
 350         short buf[2048 + AST_FRIENDLY_OFFSET / 2];
 351         struct linear_state *ls = data;
 352         int res;
 353         len = samples * 2;
 354         if (len > sizeof(buf) - AST_FRIENDLY_OFFSET) {
 355                 ast_log(LOG_WARNING, "Can't generate %d bytes of data!\n" ,len);
 356                 len = sizeof(buf) - AST_FRIENDLY_OFFSET;
 357         }
 358         memset(&f, 0, sizeof(f));
 359         res = read(ls->fd, buf + AST_FRIENDLY_OFFSET/2, len);
 360         if (res > 0) {
 361                 f.frametype = AST_FRAME_VOICE;
 362                 f.subclass = AST_FORMAT_SLINEAR;
 363                 f.data = buf + AST_FRIENDLY_OFFSET/2;
 364                 f.datalen = res;
 365                 f.samples = res / 2;
 366                 f.offset = AST_FRIENDLY_OFFSET;
 367                 ast_write(chan, &f);
 368                 if (res == len)
 369                         return 0;
 370         }
 371         return -1;
 372 }
 373
 374 static void *linear_alloc(struct ast_channel *chan, void *params)
 375 {
 376         struct linear_state *ls;
 377         /* In this case, params is already malloc'd */
 378         if (params) {
 379                 ls = params;
 380                 if (ls->allowoverride)
 381                         ast_set_flag(chan, AST_FLAG_WRITE_INT);
 382                 else
 383                         ast_clear_flag(chan, AST_FLAG_WRITE_INT);
 384                 ls->origwfmt = chan->writeformat;
 385                 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR)) {
 386                         ast_log(LOG_WARNING, "Unable to set '%s' to linear format (write)\n", chan->name);
 387                         free(ls);
 388                         ls = params = NULL;
 389                 }
 390         }
 391         return params;
 392 }
 393
 394 static struct ast_generator linearstream =
 395 {
 396         alloc: linear_alloc,
 397         release: linear_release,
 398         generate: linear_generator,
 399 };
 400
 401 int ast_linear_stream(struct ast_channel *chan, const char *filename, int fd, int allowoverride)
 402 {
 403         struct linear_state *lin;
 404         char tmpf[256];
 405         int res = -1;
 406         int autoclose = 0;
 407         if (fd < 0) {
 408                 if (ast_strlen_zero(filename))
 409                         return -1;
 410                 autoclose = 1;
 411                 if (filename[0] == '/')
 412                         ast_copy_string(tmpf, filename, sizeof(tmpf));
 413                 else
 414                         snprintf(tmpf, sizeof(tmpf), "%s/%s/%s", (char *)ast_config_AST_DATA_DIR, "sounds", filename);
 415                 fd = open(tmpf, O_RDONLY);
 416                 if (fd < 0){
 417                         ast_log(LOG_WARNING, "Unable to open file '%s': %s\n", tmpf, strerror(errno));
 418                         return -1;
 419                 }
 420         }
 421         if ((lin = ast_calloc(1, sizeof(*lin)))) {
 422                 lin->fd = fd;
 423                 lin->allowoverride = allowoverride;
 424                 lin->autoclose = autoclose;
 425                 res = ast_activate_generator(chan, &linearstream, lin);
 426         }
 427         return res;
 428 }
 429
 430 int ast_control_streamfile(struct ast_channel *chan, const char *file,
 431                            const char *fwd, const char *rev,
 432                            const char *stop, const char *pause,
 433                            const char *restart, int skipms)
 434 {
 435         char *breaks = NULL;
 436         char *end = NULL;
 437         int blen = 2;
 438         int res;
 439         long pause_restart_point = 0;
 440
 441         if (stop)
 442                 blen += strlen(stop);
 443         if (pause)
 444                 blen += strlen(pause);
 445         if (restart)
 446                 blen += strlen(restart);
 447
 448         if (blen > 2) {
 449                 breaks = alloca(blen + 1);
 450                 breaks[0] = '\0';
 451                 if (stop)
 452                         strcat(breaks, stop);
 453                 if (pause)
 454                         strcat(breaks, pause);
 455                 if (restart)
 456                         strcat(breaks, restart);
 457         }
 458         if (chan->_state != AST_STATE_UP)
 459                 res = ast_answer(chan);
 460
 461         if (file) {
 462                 if ((end = strchr(file,':'))) {
 463                         if (!strcasecmp(end, ":end")) {
 464                                 *end = '\0';
 465                                 end++;
 466                         }
 467                 }
 468         }
 469
 470         for (;;) {
 471                 ast_stopstream(chan);
 472                 res = ast_streamfile(chan, file, chan->language);
 473                 if (!res) {
 474                         if (pause_restart_point) {
 475                                 ast_seekstream(chan->stream, pause_restart_point, SEEK_SET);
 476                                 pause_restart_point = 0;
 477                         }
 478                         else if (end) {
 479                                 ast_seekstream(chan->stream, 0, SEEK_END);
 480                                 end = NULL;
 481                         };
 482                         res = ast_waitstream_fr(chan, breaks, fwd, rev, skipms);
 483                 }
 484
 485                 if (res < 1)
 486                         break;
 487
 488                 /* We go at next loop if we got the restart char */
 489                 if (restart && strchr(restart, res)) {
 490                         ast_log(LOG_DEBUG, "we'll restart the stream here at next loop\n");
 491                         pause_restart_point = 0;
 492                         continue;
 493                 }
 494
 495                 if (pause && strchr(pause, res)) {
 496                         pause_restart_point = ast_tellstream(chan->stream);
 497                         for (;;) {
 498                                 ast_stopstream(chan);
 499                                 res = ast_waitfordigit(chan, 1000);
 500                                 if (!res)
 501                                         continue;
 502                                 else if (res == -1 || strchr(pause, res) || (stop && strchr(stop, res)))
 503                                         break;
 504                         }
 505                         if (res == *pause) {
 506                                 res = 0;
 507                                 continue;
 508                         }
 509                 }
 510
 511                 if (res == -1)
 512                         break;
 513
 514                 /* if we get one of our stop chars, return it to the calling function */
 515                 if (stop && strchr(stop, res))
 516                         break;
 517         }
 518
 519         ast_stopstream(chan);
 520
 521         return res;
 522 }
 523
 524 int ast_play_and_wait(struct ast_channel *chan, const char *fn)
 525 {
 526         int d;
 527         d = ast_streamfile(chan, fn, chan->language);
 528         if (d)
 529                 return d;
 530         d = ast_waitstream(chan, AST_DIGIT_ANY);
 531         ast_stopstream(chan);
 532         return d;
 533 }
 534
 535 static int global_silence_threshold = 128;
 536 static int global_maxsilence = 0;
 537
 538 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)
 539 {
 540         int d = 0;
 541         char *fmts;
 542         char comment[256];
 543         int x, fmtcnt = 1, res = -1, outmsg = 0;
 544         struct ast_filestream *others[MAX_OTHER_FORMATS];
 545         char *sfmt[MAX_OTHER_FORMATS];
 546         char *stringp = NULL;
 547         time_t start, end;
 548         struct ast_dsp *sildet = NULL;   /* silence detector dsp */
 549         int totalsilence = 0;
 550         int rfmt = 0;
 551         struct ast_silence_generator *silgen = NULL;
 552         char prependfile[80];
 553
 554         if (silencethreshold < 0)
 555                 silencethreshold = global_silence_threshold;
 556
 557         if (maxsilence < 0)
 558                 maxsilence = global_maxsilence;
 559
 560         /* barf if no pointer passed to store duration in */
 561         if (duration == NULL) {
 562                 ast_log(LOG_WARNING, "Error play_and_record called without duration pointer\n");
 563                 return -1;
 564         }
 565
 566         ast_log(LOG_DEBUG,"play_and_record: %s, %s, '%s'\n", playfile ? playfile : "<None>", recordfile, fmt);
 567         snprintf(comment, sizeof(comment), "Playing %s, Recording to: %s on %s\n", playfile ? playfile : "<None>", recordfile, chan->name);
 568
 569         if (playfile || beep) {
 570                 if (!beep)
 571                         d = ast_play_and_wait(chan, playfile);
 572                 if (d > -1)
 573                         d = ast_stream_and_wait(chan, "beep", chan->language, "");
 574                 if (d < 0)
 575                         return -1;
 576         }
 577
 578         if (prepend) {
 579                 ast_copy_string(prependfile, recordfile, sizeof(prependfile));
 580                 strncat(prependfile, "-prepend", sizeof(prependfile) - strlen(prependfile) - 1);
 581         }
 582
 583         fmts = ast_strdupa(fmt);
 584
 585         stringp = fmts;
 586         strsep(&stringp, "|");
 587         ast_log(LOG_DEBUG,"Recording Formats: sfmts=%s\n", fmts);
 588         sfmt[0] = ast_strdupa(fmts);
 589
 590         while((fmt = strsep(&stringp, "|"))) {
 591                 if (fmtcnt > MAX_OTHER_FORMATS - 1) {
 592                         ast_log(LOG_WARNING, "Please increase MAX_OTHER_FORMATS in app.c\n");
 593                         break;
 594                 }
 595                 sfmt[fmtcnt++] = ast_strdupa(fmt);
 596         }
 597
 598         time(&start);
 599         end = start;  /* pre-initialize end to be same as start in case we never get into loop */
 600         for (x = 0; x < fmtcnt; x++) {
 601                 others[x] = ast_writefile(prepend ? prependfile : recordfile, sfmt[x], comment, O_TRUNC, 0, 0700);
 602                 if (option_verbose > 2)
 603                         ast_verbose(VERBOSE_PREFIX_3 "x=%d, open writing:  %s format: %s, %p\n", x, prepend ? prependfile : recordfile, sfmt[x], others[x]);
 604
 605                 if (!others[x]) {
 606                         break;
 607                 }
 608         }
 609
 610         if (path)
 611                 ast_unlock_path(path);
 612
 613         if (maxsilence > 0) {
 614                 sildet = ast_dsp_new(); /* Create the silence detector */
 615                 if (!sildet) {
 616                         ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
 617                         return -1;
 618                 }
 619                 ast_dsp_set_threshold(sildet, silencethreshold);
 620                 rfmt = chan->readformat;
 621                 res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
 622                 if (res < 0) {
 623                         ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
 624                         ast_dsp_free(sildet);
 625                         return -1;
 626                 }
 627         }
 628
 629         if (!prepend) {
 630                 /* Request a video update */
 631                 ast_indicate(chan, AST_CONTROL_VIDUPDATE);
 632
 633                 if (ast_opt_transmit_silence)
 634                         silgen = ast_channel_start_silence_generator(chan);
 635         }
 636
 637         if (x == fmtcnt) {
 638                 /* Loop forever, writing the packets we read to the writer(s), until
 639                    we read a digit or get a hangup */
 640                 struct ast_frame *f;
 641                 for (;;) {
 642                         res = ast_waitfor(chan, 2000);
 643                         if (!res) {
 644                                 ast_log(LOG_DEBUG, "One waitfor failed, trying another\n");
 645                                 /* Try one more time in case of masq */
 646                                 res = ast_waitfor(chan, 2000);
 647                                 if (!res) {
 648                                         ast_log(LOG_WARNING, "No audio available on %s??\n", chan->name);
 649                                         res = -1;
 650                                 }
 651                         }
 652
 653                         if (res < 0) {
 654                                 f = NULL;
 655                                 break;
 656                         }
 657                         f = ast_read(chan);
 658                         if (!f)
 659                                 break;
 660                         if (f->frametype == AST_FRAME_VOICE) {
 661                                 /* write each format */
 662                                 for (x = 0; x < fmtcnt; x++) {
 663                                         if (prepend && !others[x])
 664                                                 break;
 665                                         res = ast_writestream(others[x], f);
 666                                 }
 667
 668                                 /* Silence Detection */
 669                                 if (maxsilence > 0) {
 670                                         int dspsilence = 0;
 671                                         ast_dsp_silence(sildet, f, &dspsilence);
 672                                         if (dspsilence)
 673                                                 totalsilence = dspsilence;
 674                                         else
 675                                                 totalsilence = 0;
 676
 677                                         if (totalsilence > maxsilence) {
 678                                                 /* Ended happily with silence */
 679                                                 if (option_verbose > 2)
 680                                                         ast_verbose( VERBOSE_PREFIX_3 "Recording automatically stopped after a silence of %d seconds\n", totalsilence/1000);
 681                                                 res = 'S';
 682                                                 outmsg = 2;
 683                                                 break;
 684                                         }
 685                                 }
 686                                 /* Exit on any error */
 687                                 if (res) {
 688                                         ast_log(LOG_WARNING, "Error writing frame\n");
 689                                         break;
 690                                 }
 691                         } else if (f->frametype == AST_FRAME_VIDEO) {
 692                                 /* Write only once */
 693                                 ast_writestream(others[0], f);
 694                         } else if (f->frametype == AST_FRAME_DTMF) {
 695                                 if (prepend) {
 696                                 /* stop recording with any digit */
 697                                         if (option_verbose > 2)
 698                                                 ast_verbose(VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
 699                                         res = 't';
 700                                         outmsg = 2;
 701                                         break;
 702                                 }
 703                                 if (f->subclass == '#') {
 704                                         if (option_verbose > 2)
 705                                                 ast_verbose(VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
 706                                         res = '#';
 707                                         outmsg = 2;
 708                                         break;
 709                                 }
 710                                 if (f->subclass == '0') {
 711                                 /* Check for a '0' during message recording also, in case caller wants operator */
 712                                         if (option_verbose > 2)
 713                                                 ast_verbose(VERBOSE_PREFIX_3 "User cancelled by pressing %c\n", f->subclass);
 714                                         res = '0';
 715                                         outmsg = 0;
 716                                         break;
 717                                 }
 718                         }
 719                         if (maxtime) {
 720                                 time(&end);
 721                                 if (maxtime < (end - start)) {
 722                                         if (option_verbose > 2)
 723                                                 ast_verbose(VERBOSE_PREFIX_3 "Took too long, cutting it short...\n");
 724                                         res = 't';
 725                                         outmsg = 2;
 726                                         break;
 727                                 }
 728                         }
 729                         ast_frfree(f);
 730                 }
 731                 if (!f) {
 732                         if (option_verbose > 2)
 733                                 ast_verbose(VERBOSE_PREFIX_3 "User hung up\n");
 734                         res = -1;
 735                         outmsg = 1;
 736                 } else {
 737                         ast_frfree(f);
 738                 }
 739                 if (end == start) time(&end);
 740         } else {
 741                 ast_log(LOG_WARNING, "Error creating writestream '%s', format '%s'\n", recordfile, sfmt[x]);
 742         }
 743
 744         if (!prepend) {
 745                 if (silgen)
 746                         ast_channel_stop_silence_generator(chan, silgen);
 747         }
 748         *duration = end - start;
 749
 750         if (!prepend) {
 751                 for (x = 0; x < fmtcnt; x++) {
 752                         if (!others[x])
 753                                 break;
 754                         if (res > 0)
 755                                 ast_stream_rewind(others[x], totalsilence ? totalsilence-200 : 200);
 756                         ast_truncstream(others[x]);
 757                         ast_closestream(others[x]);
 758                 }
 759         }
 760
 761         if (prepend && outmsg) {
 762                 struct ast_filestream *realfiles[MAX_OTHER_FORMATS];
 763                 struct ast_frame *fr;
 764
 765                 for (x = 0; x < fmtcnt; x++) {
 766                         snprintf(comment, sizeof(comment), "Opening the real file %s.%s\n", recordfile, sfmt[x]);
 767                         realfiles[x] = ast_readfile(recordfile, sfmt[x], comment, O_RDONLY, 0, 0);
 768                         if (!others[x] || !realfiles[x])
 769                                 break;
 770                         ast_stream_rewind(others[x], totalsilence ? totalsilence-200 : 200);
 771                         ast_truncstream(others[x]);
 772                         /* add the original file too */
 773                         while ((fr = ast_readframe(realfiles[x]))) {
 774                                 ast_writestream(others[x], fr);
 775                                 ast_frfree(fr);
 776                         }
 777                         ast_closestream(others[x]);
 778                         ast_closestream(realfiles[x]);
 779                         ast_filerename(prependfile, recordfile, sfmt[x]);
 780                         if (option_verbose > 3)
 781                                 ast_verbose(VERBOSE_PREFIX_4 "Recording Format: sfmts=%s, prependfile %s, recordfile %s\n", sfmt[x], prependfile, recordfile);
 782                         ast_filedelete(prependfile, sfmt[x]);
 783                 }
 784         }
 785         if (rfmt && ast_set_read_format(chan, rfmt)) {
 786                 ast_log(LOG_WARNING, "Unable to restore format %s to channel '%s'\n", ast_getformatname(rfmt), chan->name);
 787         }
 788         if (outmsg == 2) {
 789                 ast_stream_and_wait(chan, "auth-thankyou", chan->language, "");
 790         }
 791         if (sildet)
 792                 ast_dsp_free(sildet);
 793         return res;
 794 }
 795
 796 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)
 797 {
 798         return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, 0, silencethreshold, maxsilence, path, 0);
 799 }
 800
 801 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)
 802 {
 803         return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, beep, silencethreshold, maxsilence, NULL, 1);
 804 }
 805
 806 /* Channel group core functions */
 807
 808 int ast_app_group_split_group(const char *data, char *group, int group_max, char *category, int category_max)
 809 {
 810         int res=0;
 811         char tmp[256];
 812         char *grp=NULL, *cat=NULL;
 813
 814         if (!ast_strlen_zero(data)) {
 815                 ast_copy_string(tmp, data, sizeof(tmp));
 816                 grp = tmp;
 817                 cat = strchr(tmp, '@');
 818                 if (cat) {
 819                         *cat = '\0';
 820                         cat++;
 821                 }
 822         }
 823
 824         if (!ast_strlen_zero(grp))
 825                 ast_copy_string(group, grp, group_max);
 826         else
 827                 res = -1;
 828
 829         if (cat)
 830                 snprintf(category, category_max, "%s_%s", GROUP_CATEGORY_PREFIX, cat);
 831         else
 832                 ast_copy_string(category, GROUP_CATEGORY_PREFIX, category_max);
 833
 834         return res;
 835 }
 836
 837 int ast_app_group_set_channel(struct ast_channel *chan, const char *data)
 838 {
 839         int res=0;
 840         char group[80] = "";
 841         char category[80] = "";
 842
 843         if (!ast_app_group_split_group(data, group, sizeof(group), category, sizeof(category))) {
 844                 pbx_builtin_setvar_helper(chan, category, group);
 845         } else
 846                 res = -1;
 847
 848         return res;
 849 }
 850
 851 int ast_app_group_get_count(const char *group, const char *category)
 852 {
 853         struct ast_channel *chan;
 854         int count = 0;
 855         const char *test;
 856         char cat[80];
 857         const char *s;
 858
 859         if (ast_strlen_zero(group))
 860                 return 0;
 861
 862         s = S_OR(category, GROUP_CATEGORY_PREFIX);
 863         ast_copy_string(cat, s, sizeof(cat));
 864
 865         chan = NULL;
 866         while ((chan = ast_channel_walk_locked(chan)) != NULL) {
 867                 test = pbx_builtin_getvar_helper(chan, cat);
 868                 if (test && !strcasecmp(test, group))
 869                         count++;
 870                 ast_channel_unlock(chan);
 871         }
 872
 873         return count;
 874 }
 875
 876 int ast_app_group_match_get_count(const char *groupmatch, const char *category)
 877 {
 878         regex_t regexbuf;
 879         struct ast_channel *chan;
 880         int count = 0;
 881         const char *test;
 882         char cat[80];
 883         const char *s;
 884
 885         if (ast_strlen_zero(groupmatch))
 886                 return 0;
 887
 888         /* if regex compilation fails, return zero matches */
 889         if (regcomp(&regexbuf, groupmatch, REG_EXTENDED | REG_NOSUB))
 890                 return 0;
 891
 892         s = S_OR(category, GROUP_CATEGORY_PREFIX);
 893         ast_copy_string(cat, s, sizeof(cat));
 894
 895         chan = NULL;
 896         while ((chan = ast_channel_walk_locked(chan)) != NULL) {
 897                 test = pbx_builtin_getvar_helper(chan, cat);
 898                 if (test && !regexec(&regexbuf, test, 0, NULL, 0))
 899                         count++;
 900                 ast_channel_unlock(chan);
 901         }
 902
 903         regfree(&regexbuf);
 904
 905         return count;
 906 }
 907
 908 unsigned int ast_app_separate_args(char *buf, char delim, char **array, int arraylen)
 909 {
 910         int argc;
 911         char *scan;
 912         int paren = 0, quote = 0;
 913
 914         if (!buf || !array || !arraylen)
 915                 return 0;
 916
 917         memset(array, 0, arraylen * sizeof(*array));
 918
 919         scan = buf;
 920
 921         for (argc = 0; *scan && (argc < arraylen - 1); argc++) {
 922                 array[argc] = scan;
 923                 for (; *scan; scan++) {
 924                         if (*scan == '(')
 925                                 paren++;
 926                         else if (*scan == ')') {
 927                                 if (paren)
 928                                         paren--;
 929                         } else if (*scan == '"') {
 930                                 quote = quote ? 0 : 1;
 931                                 /* Remove quote character from argument */
 932                                 memmove(scan, scan + 1, strlen(scan));
 933                                 scan--;
 934                         } else if (*scan == '\\') {
 935                                 /* Literal character, don't parse */
 936                                 memmove(scan, scan + 1, strlen(scan));
 937                         } else if ((*scan == delim) && !paren && !quote) {
 938                                 *scan++ = '\0';
 939                                 break;
 940                         }
 941                 }
 942         }
 943
 944         if (*scan)
 945                 array[argc++] = scan;
 946
 947         return argc;
 948 }
 949
 950 enum AST_LOCK_RESULT ast_lock_path(const char *path)
 951 {
 952         char *s;
 953         char *fs;
 954         int res;
 955         int fd;
 956         int lp = strlen(path);
 957         time_t start;
 958
 959         if (!(s = alloca(lp + 10)) || !(fs = alloca(lp + 20))) {
 960                 ast_log(LOG_WARNING, "Out of memory!\n");
 961                 return AST_LOCK_FAILURE;
 962         }
 963
 964         snprintf(fs, strlen(path) + 19, "%s/.lock-%08lx", path, ast_random());
 965         fd = open(fs, O_WRONLY | O_CREAT | O_EXCL, 0600);
 966         if (fd < 0) {
 967                 fprintf(stderr, "Unable to create lock file '%s': %s\n", path, strerror(errno));
 968                 return AST_LOCK_PATH_NOT_FOUND;
 969         }
 970         close(fd);
 971
 972         snprintf(s, strlen(path) + 9, "%s/.lock", path);
 973         time(&start);
 974         while (((res = link(fs, s)) < 0) && (errno == EEXIST) && (time(NULL) - start < 5))
 975                 usleep(1);
 976         if (res) {
 977                 ast_log(LOG_WARNING, "Failed to lock path '%s': %s\n", path, strerror(errno));
 978                 return AST_LOCK_TIMEOUT;
 979         } else {
 980                 unlink(fs);
 981                 ast_log(LOG_DEBUG, "Locked path '%s'\n", path);
 982                 return AST_LOCK_SUCCESS;
 983         }
 984 }
 985
 986 int ast_unlock_path(const char *path)
 987 {
 988         char *s;
 989         if (!(s = alloca(strlen(path) + 10)))
 990                 return -1;
 991         snprintf(s, strlen(path) + 9, "%s/%s", path, ".lock");
 992         ast_log(LOG_DEBUG, "Unlocked path '%s'\n", path);
 993         return unlink(s);
 994 }
 995
 996 int ast_record_review(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, const char *path)
 997 {
 998         int silencethreshold = 128;
 999         int maxsilence=0;
1000         int res = 0;
1001         int cmd = 0;
1002         int max_attempts = 3;
1003         int attempts = 0;
1004         int recorded = 0;
1005         int message_exists = 0;
1006         /* Note that urgent and private are for flagging messages as such in the future */
1007
1008         /* barf if no pointer passed to store duration in */
1009         if (duration == NULL) {
1010                 ast_log(LOG_WARNING, "Error ast_record_review called without duration pointer\n");
1011                 return -1;
1012         }
1013
1014         cmd = '3';       /* Want to start by recording */
1015
1016         while ((cmd >= 0) && (cmd != 't')) {
1017                 switch (cmd) {
1018                 case '1':
1019                         if (!message_exists) {
1020                                 /* In this case, 1 is to record a message */
1021                                 cmd = '3';
1022                                 break;
1023                         } else {
1024                                 ast_stream_and_wait(chan, "vm-msgsaved", chan->language, "");
1025                                 cmd = 't';
1026                                 return res;
1027                         }
1028                 case '2':
1029                         /* Review */
1030                         ast_verbose(VERBOSE_PREFIX_3 "Reviewing the recording\n");
1031                         cmd = ast_stream_and_wait(chan, recordfile, chan->language, AST_DIGIT_ANY);
1032                         break;
1033                 case '3':
1034                         message_exists = 0;
1035                         /* Record */
1036                         if (recorded == 1)
1037                                 ast_verbose(VERBOSE_PREFIX_3 "Re-recording\n");
1038                         else
1039                                 ast_verbose(VERBOSE_PREFIX_3 "Recording\n");
1040                         recorded = 1;
1041                         cmd = ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, silencethreshold, maxsilence, path);
1042                         if (cmd == -1) {
1043                         /* User has hung up, no options to give */
1044                                 return cmd;
1045                         }
1046                         if (cmd == '0') {
1047                                 break;
1048                         } else if (cmd == '*') {
1049                                 break;
1050                         }
1051                         else {
1052                                 /* If all is well, a message exists */
1053                                 message_exists = 1;
1054                                 cmd = 0;
1055                         }
1056                         break;
1057                 case '4':
1058                 case '5':
1059                 case '6':
1060                 case '7':
1061                 case '8':
1062                 case '9':
1063                 case '*':
1064                 case '#':
1065                         cmd = ast_play_and_wait(chan, "vm-sorry");
1066                         break;
1067                 default:
1068                         if (message_exists) {
1069                                 cmd = ast_play_and_wait(chan, "vm-review");
1070                         }
1071                         else {
1072                                 cmd = ast_play_and_wait(chan, "vm-torerecord");
1073                                 if (!cmd)
1074                                         cmd = ast_waitfordigit(chan, 600);
1075                         }
1076
1077                         if (!cmd)
1078                                 cmd = ast_waitfordigit(chan, 6000);
1079                         if (!cmd) {
1080                                 attempts++;
1081                         }
1082                         if (attempts > max_attempts) {
1083                                 cmd = 't';
1084                         }
1085                 }
1086         }
1087         if (cmd == 't')
1088                 cmd = 0;
1089         return cmd;
1090 }
1091
1092 #define RES_UPONE (1 << 16)
1093 #define RES_EXIT  (1 << 17)
1094 #define RES_REPEAT (1 << 18)
1095 #define RES_RESTART ((1 << 19) | RES_REPEAT)
1096
1097 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata);
1098 static int ivr_dispatch(struct ast_channel *chan, struct ast_ivr_option *option, char *exten, void *cbdata)
1099 {
1100         int res;
1101         int (*ivr_func)(struct ast_channel *, void *);
1102         char *c;
1103         char *n;
1104
1105         switch(option->action) {
1106         case AST_ACTION_UPONE:
1107                 return RES_UPONE;
1108         case AST_ACTION_EXIT:
1109                 return RES_EXIT | (((unsigned long)(option->adata)) & 0xffff);
1110         case AST_ACTION_REPEAT:
1111                 return RES_REPEAT | (((unsigned long)(option->adata)) & 0xffff);
1112         case AST_ACTION_RESTART:
1113                 return RES_RESTART ;
1114         case AST_ACTION_NOOP:
1115                 return 0;
1116         case AST_ACTION_BACKGROUND:
1117                 res = ast_stream_and_wait(chan, (char *)option->adata, chan->language, AST_DIGIT_ANY);
1118                 if (res < 0) {
1119                         ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
1120                         res = 0;
1121                 }
1122                 return res;
1123         case AST_ACTION_PLAYBACK:
1124                 res = ast_stream_and_wait(chan, (char *)option->adata, chan->language, "");
1125                 if (res < 0) {
1126                         ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
1127                         res = 0;
1128                 }
1129                 return res;
1130         case AST_ACTION_MENU:
1131                 res = ast_ivr_menu_run_internal(chan, (struct ast_ivr_menu *)option->adata, cbdata);
1132                 /* Do not pass entry errors back up, treaat ast though ti was an "UPONE" */
1133                 if (res == -2)
1134                         res = 0;
1135                 return res;
1136         case AST_ACTION_WAITOPTION:
1137                 res = ast_waitfordigit(chan, 1000 * (chan->pbx ? chan->pbx->rtimeout : 10));
1138                 if (!res)
1139                         return 't';
1140                 return res;
1141         case AST_ACTION_CALLBACK:
1142                 ivr_func = option->adata;
1143                 res = ivr_func(chan, cbdata);
1144                 return res;
1145         case AST_ACTION_TRANSFER:
1146                 res = ast_parseable_goto(chan, option->adata);
1147                 return 0;
1148         case AST_ACTION_PLAYLIST:
1149         case AST_ACTION_BACKLIST:
1150                 res = 0;
1151                 c = ast_strdupa(option->adata);
1152                 if (c) {
1153                         while((n = strsep(&c, ";")))
1154                                 if ((res = ast_stream_and_wait(chan, n, chan->language,
1155                                                 (option->action == AST_ACTION_BACKLIST) ? AST_DIGIT_ANY : "")))
1156                                         break;
1157                         ast_stopstream(chan);
1158                 }
1159                 return res;
1160         default:
1161                 ast_log(LOG_NOTICE, "Unknown dispatch function %d, ignoring!\n", option->action);
1162                 return 0;
1163         };
1164         return -1;
1165 }
1166
1167 static int option_exists(struct ast_ivr_menu *menu, char *option)
1168 {
1169         int x;
1170         for (x=0;menu->options[x].option;x++)
1171                 if (!strcasecmp(menu->options[x].option, option))
1172                         return x;
1173         return -1;
1174 }
1175
1176 static int option_matchmore(struct ast_ivr_menu *menu, char *option)
1177 {
1178         int x;
1179         for (x=0;menu->options[x].option;x++)
1180                 if ((!strncasecmp(menu->options[x].option, option, strlen(option))) &&
1181                                 (menu->options[x].option[strlen(option)]))
1182                         return x;
1183         return -1;
1184 }
1185
1186 static int read_newoption(struct ast_channel *chan, struct ast_ivr_menu *menu, char *exten, int maxexten)
1187 {
1188         int res=0;
1189         int ms;
1190         while(option_matchmore(menu, exten)) {
1191                 ms = chan->pbx ? chan->pbx->dtimeout : 5000;
1192                 if (strlen(exten) >= maxexten - 1)
1193                         break;
1194                 res = ast_waitfordigit(chan, ms);
1195                 if (res < 1)
1196                         break;
1197                 exten[strlen(exten) + 1] = '\0';
1198                 exten[strlen(exten)] = res;
1199         }
1200         return res > 0 ? 0 : res;
1201 }
1202
1203 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
1204 {
1205         /* Execute an IVR menu structure */
1206         int res=0;
1207         int pos = 0;
1208         int retries = 0;
1209         char exten[AST_MAX_EXTENSION] = "s";
1210         if (option_exists(menu, "s") < 0) {
1211                 strcpy(exten, "g");
1212                 if (option_exists(menu, "g") < 0) {
1213                         ast_log(LOG_WARNING, "No 's' nor 'g' extension in menu '%s'!\n", menu->title);
1214                         return -1;
1215                 }
1216         }
1217         while(!res) {
1218                 while(menu->options[pos].option) {
1219                         if (!strcasecmp(menu->options[pos].option, exten)) {
1220                                 res = ivr_dispatch(chan, menu->options + pos, exten, cbdata);
1221                                 ast_log(LOG_DEBUG, "IVR Dispatch of '%s' (pos %d) yields %d\n", exten, pos, res);
1222                                 if (res < 0)
1223                                         break;
1224                                 else if (res & RES_UPONE)
1225                                         return 0;
1226                                 else if (res & RES_EXIT)
1227                                         return res;
1228                                 else if (res & RES_REPEAT) {
1229                                         int maxretries = res & 0xffff;
1230                                         if ((res & RES_RESTART) == RES_RESTART) {
1231                                                 retries = 0;
1232                                         } else
1233                                                 retries++;
1234                                         if (!maxretries)
1235                                                 maxretries = 3;
1236                                         if ((maxretries > 0) && (retries >= maxretries)) {
1237                                                 ast_log(LOG_DEBUG, "Max retries %d exceeded\n", maxretries);
1238                                                 return -2;
1239                                         } else {
1240                                                 if (option_exists(menu, "g") > -1)
1241                                                         strcpy(exten, "g");
1242                                                 else if (option_exists(menu, "s") > -1)
1243                                                         strcpy(exten, "s");
1244                                         }
1245                                         pos=0;
1246                                         continue;
1247                                 } else if (res && strchr(AST_DIGIT_ANY, res)) {
1248                                         ast_log(LOG_DEBUG, "Got start of extension, %c\n", res);
1249                                         exten[1] = '\0';
1250                                         exten[0] = res;
1251                                         if ((res = read_newoption(chan, menu, exten, sizeof(exten))))
1252                                                 break;
1253                                         if (option_exists(menu, exten) < 0) {
1254                                                 if (option_exists(menu, "i")) {
1255                                                         ast_log(LOG_DEBUG, "Invalid extension entered, going to 'i'!\n");
1256                                                         strcpy(exten, "i");
1257                                                         pos = 0;
1258                                                         continue;
1259                                                 } else {
1260                                                         ast_log(LOG_DEBUG, "Aborting on invalid entry, with no 'i' option!\n");
1261                                                         res = -2;
1262                                                         break;
1263                                                 }
1264                                         } else {
1265                                                 ast_log(LOG_DEBUG, "New existing extension: %s\n", exten);
1266                                                 pos = 0;
1267                                                 continue;
1268                                         }
1269                                 }
1270                         }
1271                         pos++;
1272                 }
1273                 ast_log(LOG_DEBUG, "Stopping option '%s', res is %d\n", exten, res);
1274                 pos = 0;
1275                 if (!strcasecmp(exten, "s"))
1276                         strcpy(exten, "g");
1277                 else
1278                         break;
1279         }
1280         return res;
1281 }
1282
1283 int ast_ivr_menu_run(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
1284 {
1285         int res;
1286         res = ast_ivr_menu_run_internal(chan, menu, cbdata);
1287         /* Hide internal coding */
1288         if (res > 0)
1289                 res = 0;
1290         return res;
1291 }
1292
1293 char *ast_read_textfile(const char *filename)
1294 {
1295         int fd;
1296         char *output=NULL;
1297         struct stat filesize;
1298         int count=0;
1299         int res;
1300         if(stat(filename,&filesize)== -1){
1301                 ast_log(LOG_WARNING,"Error can't stat %s\n", filename);
1302                 return NULL;
1303         }
1304         count=filesize.st_size + 1;
1305         fd = open(filename, O_RDONLY);
1306         if (fd < 0) {
1307                 ast_log(LOG_WARNING, "Cannot open file '%s' for reading: %s\n", filename, strerror(errno));
1308                 return NULL;
1309         }
1310         if ((output = ast_malloc(count))) {
1311                 res = read(fd, output, count - 1);
1312                 if (res == count - 1) {
1313                         output[res] = '\0';
1314                 } else {
1315                         ast_log(LOG_WARNING, "Short read of %s (%d of %d): %s\n", filename, res, count -  1, strerror(errno));
1316                         free(output);
1317                         output = NULL;
1318                 }
1319         }
1320         close(fd);
1321         return output;
1322 }
1323
1324 int ast_app_parse_options(const struct ast_app_option *options, struct ast_flags *flags, char **args, char *optstr)
1325 {
1326         char *s;
1327         int curarg;
1328         unsigned int argloc;
1329         char *arg;
1330         int res = 0;
1331
1332         ast_clear_flag(flags, AST_FLAGS_ALL);
1333
1334         if (!optstr)
1335                 return 0;
1336
1337         s = optstr;
1338         while (*s) {
1339                 curarg = *s++ & 0x7f;   /* the array (in app.h) has 128 entries */
1340                 ast_set_flag(flags, options[curarg].flag);
1341                 argloc = options[curarg].arg_index;
1342                 if (*s == '(') {
1343                         /* Has argument */
1344                         arg = ++s;
1345                         s = strchr(s, ')');
1346                         if (*s) {
1347                                 if (argloc)
1348                                         args[argloc - 1] = arg;
1349                                 *s++ = '\0';
1350                         } else {
1351                                 ast_log(LOG_WARNING, "Missing closing parenthesis for argument '%c' in string '%s'\n", curarg, arg);
1352                                 res = -1;
1353                         }
1354                 } else if (argloc) {
1355                         args[argloc - 1] = NULL;
1356                 }
1357         }
1358
1359         return res;
1360 }