main/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 #include "asterisk/linkedlists.h"
  53
  54 #define MAX_OTHER_FORMATS 10
  55
  56 static AST_LIST_HEAD_STATIC(groups, ast_group_info);
  57
  58 /* !
  59 This function presents a dialtone and reads an extension into 'collect'
  60 which must be a pointer to a **pre-initialized** array of char having a
  61 size of 'size' suitable for writing to.  It will collect no more than the smaller
  62 of 'maxlen' or 'size' minus the original strlen() of collect digits.
  63 \return 0 if extension does not exist, 1 if extension exists
  64 */
  65 int ast_app_dtget(struct ast_channel *chan, const char *context, char *collect, size_t size, int maxlen, int timeout)
  66 {
  67         struct ind_tone_zone_sound *ts;
  68         int res=0, x=0;
  69
  70         if (maxlen > size)
  71                 maxlen = size;
  72
  73         if (!timeout && chan->pbx)
  74                 timeout = chan->pbx->dtimeout;
  75         else if (!timeout)
  76                 timeout = 5;
  77
  78         ts = ast_get_indication_tone(chan->zone,"dial");
  79         if (ts && ts->data[0])
  80                 res = ast_playtones_start(chan, 0, ts->data, 0);
  81         else
  82                 ast_log(LOG_NOTICE,"Huh....? no dial for indications?\n");
  83
  84         for (x = strlen(collect); x < maxlen; ) {
  85                 res = ast_waitfordigit(chan, timeout);
  86                 if (!ast_ignore_pattern(context, collect))
  87                         ast_playtones_stop(chan);
  88                 if (res < 1)
  89                         break;
  90                 if (res == '#')
  91                         break;
  92                 collect[x++] = res;
  93                 if (!ast_matchmore_extension(chan, context, collect, 1, chan->cid.cid_num))
  94                         break;
  95         }
  96         if (res >= 0)
  97                 res = ast_exists_extension(chan, context, collect, 1, chan->cid.cid_num) ? 1 : 0;
  98         return res;
  99 }
 100
 101 /*! \param c The channel to read from
 102  *  \param prompt The file to stream to the channel
 103  *  \param s The string to read in to.  Must be at least the size of your length
 104  *  \param maxlen How many digits to read (maximum)
 105  *  \param timeout set timeout to 0 for "standard" timeouts. Set timeout to -1 for
 106  *      "ludicrous time" (essentially never times out) */
 107 int ast_app_getdata(struct ast_channel *c, char *prompt, char *s, int maxlen, int timeout)
 108 {
 109         int res,to,fto;
 110         /* XXX Merge with full version? XXX */
 111         if (maxlen)
 112                 s[0] = '\0';
 113         if (prompt) {
 114                 res = ast_streamfile(c, prompt, c->language);
 115                 if (res < 0)
 116                         return res;
 117         }
 118         fto = c->pbx ? c->pbx->rtimeout * 1000 : 6000;
 119         to = c->pbx ? c->pbx->dtimeout * 1000 : 2000;
 120
 121         if (timeout > 0)
 122                 fto = to = timeout;
 123         if (timeout < 0)
 124                 fto = to = 1000000000;
 125         res = ast_readstring(c, s, maxlen, to, fto, "#");
 126         return res;
 127 }
 128
 129
 130 int ast_app_getdata_full(struct ast_channel *c, char *prompt, char *s, int maxlen, int timeout, int audiofd, int ctrlfd)
 131 {
 132         int res, to, fto;
 133         if (prompt) {
 134                 res = ast_streamfile(c, prompt, c->language);
 135                 if (res < 0)
 136                         return res;
 137         }
 138         fto = 6000;
 139         to = 2000;
 140         if (timeout > 0)
 141                 fto = to = timeout;
 142         if (timeout < 0)
 143                 fto = to = 1000000000;
 144         res = ast_readstring_full(c, s, maxlen, to, fto, "#", audiofd, ctrlfd);
 145         return res;
 146 }
 147
 148 static int (*ast_has_voicemail_func)(const char *mailbox, const char *folder) = NULL;
 149 static int (*ast_inboxcount_func)(const char *mailbox, int *newmsgs, int *oldmsgs) = NULL;
 150 static int (*ast_messagecount_func)(const char *context, const char *mailbox, const char *folder) = NULL;
 151
 152 void ast_install_vm_functions(int (*has_voicemail_func)(const char *mailbox, const char *folder),
 153                               int (*inboxcount_func)(const char *mailbox, int *newmsgs, int *oldmsgs),
 154                               int (*messagecount_func)(const char *context, const char *mailbox, const char *folder))
 155 {
 156         ast_has_voicemail_func = has_voicemail_func;
 157         ast_inboxcount_func = inboxcount_func;
 158         ast_messagecount_func = messagecount_func;
 159 }
 160
 161 void ast_uninstall_vm_functions(void)
 162 {
 163         ast_has_voicemail_func = NULL;
 164         ast_inboxcount_func = NULL;
 165         ast_messagecount_func = NULL;
 166 }
 167
 168 int ast_app_has_voicemail(const char *mailbox, const char *folder)
 169 {
 170         static int warned = 0;
 171         if (ast_has_voicemail_func)
 172                 return ast_has_voicemail_func(mailbox, folder);
 173
 174         if ((option_verbose > 2) && !warned) {
 175                 ast_verbose(VERBOSE_PREFIX_3 "Message check requested for mailbox %s/folder %s but voicemail not loaded.\n", mailbox, folder ? folder : "INBOX");
 176                 warned++;
 177         }
 178         return 0;
 179 }
 180
 181
 182 int ast_app_inboxcount(const char *mailbox, int *newmsgs, int *oldmsgs)
 183 {
 184         static int warned = 0;
 185         if (newmsgs)
 186                 *newmsgs = 0;
 187         if (oldmsgs)
 188                 *oldmsgs = 0;
 189         if (ast_inboxcount_func)
 190                 return ast_inboxcount_func(mailbox, newmsgs, oldmsgs);
 191
 192         if (!warned && (option_verbose > 2)) {
 193                 warned++;
 194                 ast_verbose(VERBOSE_PREFIX_3 "Message count requested for mailbox %s but voicemail not loaded.\n", mailbox);
 195         }
 196
 197         return 0;
 198 }
 199
 200 int ast_app_messagecount(const char *context, const char *mailbox, const char *folder)
 201 {
 202         static int warned = 0;
 203         if (ast_messagecount_func)
 204                 return ast_messagecount_func(context, mailbox, folder);
 205
 206         if (!warned && (option_verbose > 2)) {
 207                 warned++;
 208                 ast_verbose(VERBOSE_PREFIX_3 "Message count requested for mailbox %s@%s/%s but voicemail not loaded.\n", mailbox, context, folder);
 209         }
 210
 211         return 0;
 212 }
 213
 214 int ast_dtmf_stream(struct ast_channel *chan, struct ast_channel *peer, const char *digits, int between)
 215 {
 216         const char *ptr;
 217         int res = 0;
 218         struct ast_silence_generator *silgen = NULL;
 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         if (ast_opt_transmit_silence) {
 234                 silgen = ast_channel_start_silence_generator(chan);
 235         }
 236
 237         for (ptr = digits; *ptr; ptr++) {
 238                 if (*ptr == 'w') {
 239                         /* 'w' -- wait half a second */
 240                         if ((res = ast_safe_sleep(chan, 500)))
 241                                 break;
 242                 } else if (strchr("0123456789*#abcdfABCDF", *ptr)) {
 243                         /* Character represents valid DTMF */
 244                         if (*ptr == 'f' || *ptr == 'F') {
 245                                 /* ignore return values if not supported by channel */
 246                                 ast_indicate(chan, AST_CONTROL_FLASH);
 247                         } else
 248                                 ast_senddigit(chan, *ptr);
 249                         /* pause between digits */
 250                         if ((res = ast_safe_sleep(chan, between)))
 251                                 break;
 252                 } else
 253                         ast_log(LOG_WARNING, "Illegal DTMF character '%c' in string. (0-9*#aAbBcCdD allowed)\n",*ptr);
 254         }
 255
 256         if (peer) {
 257                 /* Stop autoservice on the peer channel, but don't overwrite any error condition
 258                    that has occurred previously while acting on the primary channel */
 259                 if (ast_autoservice_stop(peer) && !res)
 260                         res = -1;
 261         }
 262
 263         if (silgen) {
 264                 ast_channel_stop_silence_generator(chan, silgen);
 265         }
 266
 267         return res;
 268 }
 269
 270 struct linear_state {
 271         int fd;
 272         int autoclose;
 273         int allowoverride;
 274         int origwfmt;
 275 };
 276
 277 static void linear_release(struct ast_channel *chan, void *params)
 278 {
 279         struct linear_state *ls = params;
 280         if (ls->origwfmt && ast_set_write_format(chan, ls->origwfmt)) {
 281                 ast_log(LOG_WARNING, "Unable to restore channel '%s' to format '%d'\n", chan->name, ls->origwfmt);
 282         }
 283         if (ls->autoclose)
 284                 close(ls->fd);
 285         free(params);
 286 }
 287
 288 static int linear_generator(struct ast_channel *chan, void *data, int len, int samples)
 289 {
 290         struct ast_frame f;
 291         short buf[2048 + AST_FRIENDLY_OFFSET / 2];
 292         struct linear_state *ls = data;
 293         int res;
 294         len = samples * 2;
 295         if (len > sizeof(buf) - AST_FRIENDLY_OFFSET) {
 296                 ast_log(LOG_WARNING, "Can't generate %d bytes of data!\n" ,len);
 297                 len = sizeof(buf) - AST_FRIENDLY_OFFSET;
 298         }
 299         memset(&f, 0, sizeof(f));
 300         res = read(ls->fd, buf + AST_FRIENDLY_OFFSET/2, len);
 301         if (res > 0) {
 302                 f.frametype = AST_FRAME_VOICE;
 303                 f.subclass = AST_FORMAT_SLINEAR;
 304                 f.data = buf + AST_FRIENDLY_OFFSET/2;
 305                 f.datalen = res;
 306                 f.samples = res / 2;
 307                 f.offset = AST_FRIENDLY_OFFSET;
 308                 ast_write(chan, &f);
 309                 if (res == len)
 310                         return 0;
 311         }
 312         return -1;
 313 }
 314
 315 static void *linear_alloc(struct ast_channel *chan, void *params)
 316 {
 317         struct linear_state *ls;
 318         /* In this case, params is already malloc'd */
 319         if (params) {
 320                 ls = params;
 321                 if (ls->allowoverride)
 322                         ast_set_flag(chan, AST_FLAG_WRITE_INT);
 323                 else
 324                         ast_clear_flag(chan, AST_FLAG_WRITE_INT);
 325                 ls->origwfmt = chan->writeformat;
 326                 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR)) {
 327                         ast_log(LOG_WARNING, "Unable to set '%s' to linear format (write)\n", chan->name);
 328                         free(ls);
 329                         ls = params = NULL;
 330                 }
 331         }
 332         return params;
 333 }
 334
 335 static struct ast_generator linearstream =
 336 {
 337         alloc: linear_alloc,
 338         release: linear_release,
 339         generate: linear_generator,
 340 };
 341
 342 int ast_linear_stream(struct ast_channel *chan, const char *filename, int fd, int allowoverride)
 343 {
 344         struct linear_state *lin;
 345         char tmpf[256];
 346         int res = -1;
 347         int autoclose = 0;
 348         if (fd < 0) {
 349                 if (ast_strlen_zero(filename))
 350                         return -1;
 351                 autoclose = 1;
 352                 if (filename[0] == '/')
 353                         ast_copy_string(tmpf, filename, sizeof(tmpf));
 354                 else
 355                         snprintf(tmpf, sizeof(tmpf), "%s/%s/%s", (char *)ast_config_AST_DATA_DIR, "sounds", filename);
 356                 fd = open(tmpf, O_RDONLY);
 357                 if (fd < 0){
 358                         ast_log(LOG_WARNING, "Unable to open file '%s': %s\n", tmpf, strerror(errno));
 359                         return -1;
 360                 }
 361         }
 362         if ((lin = ast_calloc(1, sizeof(*lin)))) {
 363                 lin->fd = fd;
 364                 lin->allowoverride = allowoverride;
 365                 lin->autoclose = autoclose;
 366                 res = ast_activate_generator(chan, &linearstream, lin);
 367         }
 368         return res;
 369 }
 370
 371 int ast_control_streamfile(struct ast_channel *chan, const char *file,
 372                            const char *fwd, const char *rev,
 373                            const char *stop, const char *pause,
 374                            const char *restart, int skipms)
 375 {
 376         char *breaks = NULL;
 377         char *end = NULL;
 378         int blen = 2;
 379         int res;
 380         long pause_restart_point = 0;
 381
 382         if (stop)
 383                 blen += strlen(stop);
 384         if (pause)
 385                 blen += strlen(pause);
 386         if (restart)
 387                 blen += strlen(restart);
 388
 389         if (blen > 2) {
 390                 breaks = alloca(blen + 1);
 391                 breaks[0] = '\0';
 392                 if (stop)
 393                         strcat(breaks, stop);
 394                 if (pause)
 395                         strcat(breaks, pause);
 396                 if (restart)
 397                         strcat(breaks, restart);
 398         }
 399         if (chan->_state != AST_STATE_UP)
 400                 res = ast_answer(chan);
 401
 402         if (file) {
 403                 if ((end = strchr(file,':'))) {
 404                         if (!strcasecmp(end, ":end")) {
 405                                 *end = '\0';
 406                                 end++;
 407                         }
 408                 }
 409         }
 410
 411         for (;;) {
 412                 ast_stopstream(chan);
 413                 res = ast_streamfile(chan, file, chan->language);
 414                 if (!res) {
 415                         if (pause_restart_point) {
 416                                 ast_seekstream(chan->stream, pause_restart_point, SEEK_SET);
 417                                 pause_restart_point = 0;
 418                         }
 419                         else if (end) {
 420                                 ast_seekstream(chan->stream, 0, SEEK_END);
 421                                 end = NULL;
 422                         };
 423                         res = ast_waitstream_fr(chan, breaks, fwd, rev, skipms);
 424                 }
 425
 426                 if (res < 1)
 427                         break;
 428
 429                 /* We go at next loop if we got the restart char */
 430                 if (restart && strchr(restart, res)) {
 431                         if (option_debug)
 432                                 ast_log(LOG_DEBUG, "we'll restart the stream here at next loop\n");
 433                         pause_restart_point = 0;
 434                         continue;
 435                 }
 436
 437                 if (pause && strchr(pause, res)) {
 438                         pause_restart_point = ast_tellstream(chan->stream);
 439                         for (;;) {
 440                                 ast_stopstream(chan);
 441                                 res = ast_waitfordigit(chan, 1000);
 442                                 if (!res)
 443                                         continue;
 444                                 else if (res == -1 || strchr(pause, res) || (stop && strchr(stop, res)))
 445                                         break;
 446                         }
 447                         if (res == *pause) {
 448                                 res = 0;
 449                                 continue;
 450                         }
 451                 }
 452
 453                 if (res == -1)
 454                         break;
 455
 456                 /* if we get one of our stop chars, return it to the calling function */
 457                 if (stop && strchr(stop, res))
 458                         break;
 459         }
 460
 461         /* If we are returning a digit cast it as char */
 462         if (res > 0 || chan->stream)
 463                 res = (char)res;
 464
 465         ast_stopstream(chan);
 466
 467         return res;
 468 }
 469
 470 int ast_play_and_wait(struct ast_channel *chan, const char *fn)
 471 {
 472         int d;
 473         d = ast_streamfile(chan, fn, chan->language);
 474         if (d)
 475                 return d;
 476         d = ast_waitstream(chan, AST_DIGIT_ANY);
 477         ast_stopstream(chan);
 478         return d;
 479 }
 480
 481 static int global_silence_threshold = 128;
 482 static int global_maxsilence = 0;
 483
 484 /*! Optionally play a sound file or a beep, then record audio and video from the channel.
 485  * @param chan Channel to playback to/record from.
 486  * @param playfile Filename of sound to play before recording begins.
 487  * @param recordfile Filename to record to.
 488  * @param maxtime Maximum length of recording (in milliseconds).
 489  * @param fmt Format(s) to record message in. Multiple formats may be specified by separating them with a '|'.
 490  * @param duration Where to store actual length of the recorded message (in milliseconds).
 491  * @param beep Whether to play a beep before starting to record.
 492  * @param silencethreshold
 493  * @param maxsilence Length of silence that will end a recording (in milliseconds).
 494  * @param path Optional filesystem path to unlock.
 495  * @param prepend If true, prepend the recorded audio to an existing file.
 496  * @param acceptdtmf DTMF digits that will end the recording.
 497  * @param canceldtmf DTMF digits that will cancel the recording.
 498  */
 499
 500 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)
 501 {
 502         int d = 0;
 503         char *fmts;
 504         char comment[256];
 505         int x, fmtcnt = 1, res = -1, outmsg = 0;
 506         struct ast_filestream *others[MAX_OTHER_FORMATS];
 507         char *sfmt[MAX_OTHER_FORMATS];
 508         char *stringp = NULL;
 509         time_t start, end;
 510         struct ast_dsp *sildet = NULL;   /* silence detector dsp */
 511         int totalsilence = 0;
 512         int rfmt = 0;
 513         struct ast_silence_generator *silgen = NULL;
 514         char prependfile[80];
 515
 516         if (silencethreshold < 0)
 517                 silencethreshold = global_silence_threshold;
 518
 519         if (maxsilence < 0)
 520                 maxsilence = global_maxsilence;
 521
 522         /* barf if no pointer passed to store duration in */
 523         if (duration == NULL) {
 524                 ast_log(LOG_WARNING, "Error play_and_record called without duration pointer\n");
 525                 return -1;
 526         }
 527
 528         if (option_debug)
 529                 ast_log(LOG_DEBUG,"play_and_record: %s, %s, '%s'\n", playfile ? playfile : "<None>", recordfile, fmt);
 530         snprintf(comment, sizeof(comment), "Playing %s, Recording to: %s on %s\n", playfile ? playfile : "<None>", recordfile, chan->name);
 531
 532         if (playfile || beep) {
 533                 if (!beep)
 534                         d = ast_play_and_wait(chan, playfile);
 535                 if (d > -1)
 536                         d = ast_stream_and_wait(chan, "beep", chan->language, "");
 537                 if (d < 0)
 538                         return -1;
 539         }
 540
 541         if (prepend) {
 542                 ast_copy_string(prependfile, recordfile, sizeof(prependfile));
 543                 strncat(prependfile, "-prepend", sizeof(prependfile) - strlen(prependfile) - 1);
 544         }
 545
 546         fmts = ast_strdupa(fmt);
 547
 548         stringp = fmts;
 549         strsep(&stringp, "|");
 550         if (option_debug)
 551                 ast_log(LOG_DEBUG, "Recording Formats: sfmts=%s\n", fmts);
 552         sfmt[0] = ast_strdupa(fmts);
 553
 554         while ((fmt = strsep(&stringp, "|"))) {
 555                 if (fmtcnt > MAX_OTHER_FORMATS - 1) {
 556                         ast_log(LOG_WARNING, "Please increase MAX_OTHER_FORMATS in app.c\n");
 557                         break;
 558                 }
 559                 sfmt[fmtcnt++] = ast_strdupa(fmt);
 560         }
 561
 562         end = start = time(NULL);  /* pre-initialize end to be same as start in case we never get into loop */
 563         for (x = 0; x < fmtcnt; x++) {
 564                 others[x] = ast_writefile(prepend ? prependfile : recordfile, sfmt[x], comment, O_TRUNC, 0, 0777);
 565                 if (option_verbose > 2)
 566                         ast_verbose(VERBOSE_PREFIX_3 "x=%d, open writing:  %s format: %s, %p\n", x, prepend ? prependfile : recordfile, sfmt[x], others[x]);
 567
 568                 if (!others[x])
 569                         break;
 570         }
 571
 572         if (path)
 573                 ast_unlock_path(path);
 574
 575         if (maxsilence > 0) {
 576                 sildet = ast_dsp_new(); /* Create the silence detector */
 577                 if (!sildet) {
 578                         ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
 579                         return -1;
 580                 }
 581                 ast_dsp_set_threshold(sildet, silencethreshold);
 582                 rfmt = chan->readformat;
 583                 res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
 584                 if (res < 0) {
 585                         ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
 586                         ast_dsp_free(sildet);
 587                         return -1;
 588                 }
 589         }
 590
 591         if (!prepend) {
 592                 /* Request a video update */
 593                 ast_indicate(chan, AST_CONTROL_VIDUPDATE);
 594
 595                 if (ast_opt_transmit_silence)
 596                         silgen = ast_channel_start_silence_generator(chan);
 597         }
 598
 599         if (x == fmtcnt) {
 600                 /* Loop forever, writing the packets we read to the writer(s), until
 601                    we read a digit or get a hangup */
 602                 struct ast_frame *f;
 603                 for (;;) {
 604                         res = ast_waitfor(chan, 2000);
 605                         if (!res) {
 606                                 if (option_debug)
 607                                         ast_log(LOG_DEBUG, "One waitfor failed, trying another\n");
 608                                 /* Try one more time in case of masq */
 609                                 res = ast_waitfor(chan, 2000);
 610                                 if (!res) {
 611                                         ast_log(LOG_WARNING, "No audio available on %s??\n", chan->name);
 612                                         res = -1;
 613                                 }
 614                         }
 615
 616                         if (res < 0) {
 617                                 f = NULL;
 618                                 break;
 619                         }
 620                         f = ast_read(chan);
 621                         if (!f)
 622                                 break;
 623                         if (f->frametype == AST_FRAME_VOICE) {
 624                                 /* write each format */
 625                                 for (x = 0; x < fmtcnt; x++) {
 626                                         if (prepend && !others[x])
 627                                                 break;
 628                                         res = ast_writestream(others[x], f);
 629                                 }
 630
 631                                 /* Silence Detection */
 632                                 if (maxsilence > 0) {
 633                                         int dspsilence = 0;
 634                                         ast_dsp_silence(sildet, f, &dspsilence);
 635                                         if (dspsilence)
 636                                                 totalsilence = dspsilence;
 637                                         else
 638                                                 totalsilence = 0;
 639
 640                                         if (totalsilence > maxsilence) {
 641                                                 /* Ended happily with silence */
 642                                                 if (option_verbose > 2)
 643                                                         ast_verbose( VERBOSE_PREFIX_3 "Recording automatically stopped after a silence of %d seconds\n", totalsilence/1000);
 644                                                 res = 'S';
 645                                                 outmsg = 2;
 646                                                 break;
 647                                         }
 648                                 }
 649                                 /* Exit on any error */
 650                                 if (res) {
 651                                         ast_log(LOG_WARNING, "Error writing frame\n");
 652                                         break;
 653                                 }
 654                         } else if (f->frametype == AST_FRAME_VIDEO) {
 655                                 /* Write only once */
 656                                 ast_writestream(others[0], f);
 657                         } else if (f->frametype == AST_FRAME_DTMF) {
 658                                 if (prepend) {
 659                                 /* stop recording with any digit */
 660                                         if (option_verbose > 2)
 661                                                 ast_verbose(VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
 662                                         res = 't';
 663                                         outmsg = 2;
 664                                         break;
 665                                 }
 666                                 if (strchr(acceptdtmf, f->subclass)) {
 667                                         if (option_verbose > 2)
 668                                                 ast_verbose(VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
 669                                         res = f->subclass;
 670                                         outmsg = 2;
 671                                         break;
 672                                 }
 673                                 if (strchr(canceldtmf, f->subclass)) {
 674                                         if (option_verbose > 2)
 675                                                 ast_verbose(VERBOSE_PREFIX_3 "User cancelled message by pressing %c\n", f->subclass);
 676                                         res = f->subclass;
 677                                         outmsg = 0;
 678                                         break;
 679                                 }
 680                         }
 681                         if (maxtime) {
 682                                 end = time(NULL);
 683                                 if (maxtime < (end - start)) {
 684                                         if (option_verbose > 2)
 685                                                 ast_verbose(VERBOSE_PREFIX_3 "Took too long, cutting it short...\n");
 686                                         res = 't';
 687                                         outmsg = 2;
 688                                         break;
 689                                 }
 690                         }
 691                         ast_frfree(f);
 692                 }
 693                 if (!f) {
 694                         if (option_verbose > 2)
 695                                 ast_verbose(VERBOSE_PREFIX_3 "User hung up\n");
 696                         res = -1;
 697                         outmsg = 1;
 698                 } else {
 699                         ast_frfree(f);
 700                 }
 701         } else {
 702                 ast_log(LOG_WARNING, "Error creating writestream '%s', format '%s'\n", recordfile, sfmt[x]);
 703         }
 704
 705         if (!prepend) {
 706                 if (silgen)
 707                         ast_channel_stop_silence_generator(chan, silgen);
 708         }
 709
 710         /*!\note
 711          * Instead of asking how much time passed (end - start), calculate the number
 712          * of seconds of audio which actually went into the file.  This fixes a
 713          * problem where audio is stopped up on the network and never gets to us.
 714          *
 715          * Note that we still want to use the number of seconds passed for the max
 716          * message, otherwise we could get a situation where this stream is never
 717          * closed (which would create a resource leak).
 718          */
 719         *duration = others[0] ? ast_tellstream(others[0]) / 8000 : 0;
 720
 721         if (!prepend) {
 722                 for (x = 0; x < fmtcnt; x++) {
 723                         if (!others[x])
 724                                 break;
 725                         /*!\note
 726                          * If we ended with silence, trim all but the first 200ms of silence
 727                          * off the recording.  However, if we ended with '#', we don't want
 728                          * to trim ANY part of the recording.
 729                          */
 730                         if (res > 0 && totalsilence)
 731                                 ast_stream_rewind(others[x], totalsilence - 200);
 732                         ast_truncstream(others[x]);
 733                         ast_closestream(others[x]);
 734                 }
 735         }
 736
 737         if (prepend && outmsg) {
 738                 struct ast_filestream *realfiles[MAX_OTHER_FORMATS];
 739                 struct ast_frame *fr;
 740
 741                 for (x = 0; x < fmtcnt; x++) {
 742                         snprintf(comment, sizeof(comment), "Opening the real file %s.%s\n", recordfile, sfmt[x]);
 743                         realfiles[x] = ast_readfile(recordfile, sfmt[x], comment, O_RDONLY, 0, 0);
 744                         if (!others[x] || !realfiles[x])
 745                                 break;
 746                         /*!\note Same logic as above. */
 747                         if (totalsilence)
 748                                 ast_stream_rewind(others[x], totalsilence - 200);
 749                         ast_truncstream(others[x]);
 750                         /* add the original file too */
 751                         while ((fr = ast_readframe(realfiles[x]))) {
 752                                 ast_writestream(others[x], fr);
 753                                 ast_frfree(fr);
 754                         }
 755                         ast_closestream(others[x]);
 756                         ast_closestream(realfiles[x]);
 757                         ast_filerename(prependfile, recordfile, sfmt[x]);
 758                         if (option_verbose > 3)
 759                                 ast_verbose(VERBOSE_PREFIX_4 "Recording Format: sfmts=%s, prependfile %s, recordfile %s\n", sfmt[x], prependfile, recordfile);
 760                         ast_filedelete(prependfile, sfmt[x]);
 761                 }
 762         }
 763         if (rfmt && ast_set_read_format(chan, rfmt)) {
 764                 ast_log(LOG_WARNING, "Unable to restore format %s to channel '%s'\n", ast_getformatname(rfmt), chan->name);
 765         }
 766         if (outmsg == 2) {
 767                 ast_stream_and_wait(chan, "auth-thankyou", chan->language, "");
 768         }
 769         if (sildet)
 770                 ast_dsp_free(sildet);
 771         return res;
 772 }
 773
 774 static char default_acceptdtmf[] = "#";
 775 static char default_canceldtmf[] = "";
 776
 777 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)
 778 {
 779         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));
 780 }
 781
 782 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)
 783 {
 784         return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, 0, silencethreshold, maxsilence, path, 0, default_acceptdtmf, default_canceldtmf);
 785 }
 786
 787 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)
 788 {
 789         return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, beep, silencethreshold, maxsilence, NULL, 1, default_acceptdtmf, default_canceldtmf);
 790 }
 791
 792 /* Channel group core functions */
 793
 794 int ast_app_group_split_group(const char *data, char *group, int group_max, char *category, int category_max)
 795 {
 796         int res=0;
 797         char tmp[256];
 798         char *grp=NULL, *cat=NULL;
 799
 800         if (!ast_strlen_zero(data)) {
 801                 ast_copy_string(tmp, data, sizeof(tmp));
 802                 grp = tmp;
 803                 cat = strchr(tmp, '@');
 804                 if (cat) {
 805                         *cat = '\0';
 806                         cat++;
 807                 }
 808         }
 809
 810         if (!ast_strlen_zero(grp))
 811                 ast_copy_string(group, grp, group_max);
 812         else
 813                 *group = '\0';
 814
 815         if (!ast_strlen_zero(cat))
 816                 ast_copy_string(category, cat, category_max);
 817
 818         return res;
 819 }
 820
 821 int ast_app_group_set_channel(struct ast_channel *chan, const char *data)
 822 {
 823         int res = 0;
 824         char group[80] = "", category[80] = "";
 825         struct ast_group_info *gi = NULL;
 826         size_t len = 0;
 827
 828         if (ast_app_group_split_group(data, group, sizeof(group), category, sizeof(category)))
 829                 return -1;
 830
 831         /* Calculate memory we will need if this is new */
 832         len = sizeof(*gi) + strlen(group) + 1;
 833         if (!ast_strlen_zero(category))
 834                 len += strlen(category) + 1;
 835
 836         AST_LIST_LOCK(&groups);
 837         AST_LIST_TRAVERSE_SAFE_BEGIN(&groups, gi, list) {
 838                 if ((gi->chan == chan) && ((ast_strlen_zero(category) && ast_strlen_zero(gi->category)) || (!ast_strlen_zero(gi->category) && !strcasecmp(gi->category, category)))) {
 839                         AST_LIST_REMOVE_CURRENT(&groups, list);
 840                         free(gi);
 841                         break;
 842                 }
 843         }
 844         AST_LIST_TRAVERSE_SAFE_END
 845
 846         if (ast_strlen_zero(group)) {
 847                 /* Enable unsetting the group */
 848         } else if ((gi = calloc(1, len))) {
 849                 gi->chan = chan;
 850                 gi->group = (char *) gi + sizeof(*gi);
 851                 strcpy(gi->group, group);
 852                 if (!ast_strlen_zero(category)) {
 853                         gi->category = (char *) gi + sizeof(*gi) + strlen(group) + 1;
 854                         strcpy(gi->category, category);
 855                 }
 856                 AST_LIST_INSERT_TAIL(&groups, gi, list);
 857         } else {
 858                 res = -1;
 859         }
 860
 861         AST_LIST_UNLOCK(&groups);
 862
 863         return res;
 864 }
 865
 866 int ast_app_group_get_count(const char *group, const char *category)
 867 {
 868         struct ast_group_info *gi = NULL;
 869         int count = 0;
 870
 871         if (ast_strlen_zero(group))
 872                 return 0;
 873
 874         AST_LIST_LOCK(&groups);
 875         AST_LIST_TRAVERSE(&groups, gi, list) {
 876                 if (!strcasecmp(gi->group, group) && (ast_strlen_zero(category) || (!ast_strlen_zero(gi->category) && !strcasecmp(gi->category, category))))
 877                         count++;
 878         }
 879         AST_LIST_UNLOCK(&groups);
 880
 881         return count;
 882 }
 883
 884 int ast_app_group_match_get_count(const char *groupmatch, const char *category)
 885 {
 886         struct ast_group_info *gi = NULL;
 887         regex_t regexbuf;
 888         int count = 0;
 889
 890         if (ast_strlen_zero(groupmatch))
 891                 return 0;
 892
 893         /* if regex compilation fails, return zero matches */
 894         if (regcomp(&regexbuf, groupmatch, REG_EXTENDED | REG_NOSUB))
 895                 return 0;
 896
 897         AST_LIST_LOCK(&groups);
 898         AST_LIST_TRAVERSE(&groups, gi, list) {
 899                 if (!regexec(&regexbuf, gi->group, 0, NULL, 0) && (ast_strlen_zero(category) || (!ast_strlen_zero(gi->category) && !strcasecmp(gi->category, category))))
 900                         count++;
 901         }
 902         AST_LIST_UNLOCK(&groups);
 903
 904         regfree(&regexbuf);
 905
 906         return count;
 907 }
 908
 909 int ast_app_group_update(struct ast_channel *old, struct ast_channel *new)
 910 {
 911         struct ast_group_info *gi = NULL;
 912
 913         AST_LIST_LOCK(&groups);
 914         AST_LIST_TRAVERSE(&groups, gi, list) {
 915                 if (gi->chan == old)
 916                         gi->chan = new;
 917         }
 918         AST_LIST_UNLOCK(&groups);
 919
 920         return 0;
 921 }
 922
 923 int ast_app_group_discard(struct ast_channel *chan)
 924 {
 925         struct ast_group_info *gi = NULL;
 926
 927         AST_LIST_LOCK(&groups);
 928         AST_LIST_TRAVERSE_SAFE_BEGIN(&groups, gi, list) {
 929                 if (gi->chan == chan) {
 930                         AST_LIST_REMOVE_CURRENT(&groups, list);
 931                         free(gi);
 932                 }
 933         }
 934         AST_LIST_TRAVERSE_SAFE_END
 935         AST_LIST_UNLOCK(&groups);
 936
 937         return 0;
 938 }
 939
 940 int ast_app_group_list_lock(void)
 941 {
 942         return AST_LIST_LOCK(&groups);
 943 }
 944
 945 struct ast_group_info *ast_app_group_list_head(void)
 946 {
 947         return AST_LIST_FIRST(&groups);
 948 }
 949
 950 int ast_app_group_list_unlock(void)
 951 {
 952         return AST_LIST_UNLOCK(&groups);
 953 }
 954
 955 unsigned int ast_app_separate_args(char *buf, char delim, char **array, int arraylen)
 956 {
 957         int argc;
 958         char *scan, *wasdelim = NULL;
 959         int paren = 0, quote = 0;
 960
 961         if (!buf || !array || !arraylen)
 962                 return 0;
 963
 964         memset(array, 0, arraylen * sizeof(*array));
 965
 966         scan = buf;
 967
 968         for (argc = 0; *scan && (argc < arraylen - 1); argc++) {
 969                 array[argc] = scan;
 970                 for (; *scan; scan++) {
 971                         if (*scan == '(')
 972                                 paren++;
 973                         else if (*scan == ')') {
 974                                 if (paren)
 975                                         paren--;
 976                         } else if (*scan == '"' && delim != '"') {
 977                                 quote = quote ? 0 : 1;
 978                                 /* Remove quote character from argument */
 979                                 memmove(scan, scan + 1, strlen(scan));
 980                                 scan--;
 981                         } else if (*scan == '\\') {
 982                                 /* Literal character, don't parse */
 983                                 memmove(scan, scan + 1, strlen(scan));
 984                         } else if ((*scan == delim) && !paren && !quote) {
 985                                 wasdelim = scan;
 986                                 *scan++ = '\0';
 987                                 break;
 988                         }
 989                 }
 990         }
 991
 992         /* If the last character in the original string was the delimiter, then
 993          * there is one additional argument. */
 994         if (*scan || (scan > buf && (scan - 1) == wasdelim)) {
 995                 array[argc++] = scan;
 996         }
 997
 998         return argc;
 999 }
1000
1001 enum AST_LOCK_RESULT ast_lock_path(const char *path)
1002 {
1003         char *s;
1004         char *fs;
1005         int res;
1006         int fd;
1007         int lp = strlen(path);
1008         time_t start;
1009
1010         if (!(s = alloca(lp + 10)) || !(fs = alloca(lp + 20))) {
1011                 ast_log(LOG_WARNING, "Out of memory!\n");
1012                 return AST_LOCK_FAILURE;
1013         }
1014
1015         snprintf(fs, strlen(path) + 19, "%s/.lock-%08lx", path, ast_random());
1016         fd = open(fs, O_WRONLY | O_CREAT | O_EXCL, 0600);
1017         if (fd < 0) {
1018                 ast_log(LOG_ERROR, "Unable to create lock file '%s': %s\n", path, strerror(errno));
1019                 return AST_LOCK_PATH_NOT_FOUND;
1020         }
1021         close(fd);
1022
1023         snprintf(s, strlen(path) + 9, "%s/.lock", path);
1024         start = time(NULL);
1025         while (((res = link(fs, s)) < 0) && (errno == EEXIST) && (time(NULL) - start < 5))
1026                 usleep(1);
1027
1028         unlink(fs);
1029
1030         if (res) {
1031                 ast_log(LOG_WARNING, "Failed to lock path '%s': %s\n", path, strerror(errno));
1032                 return AST_LOCK_TIMEOUT;
1033         } else {
1034                 if (option_debug)
1035                         ast_log(LOG_DEBUG, "Locked path '%s'\n", path);
1036                 return AST_LOCK_SUCCESS;
1037         }
1038 }
1039
1040 int ast_unlock_path(const char *path)
1041 {
1042         char *s;
1043         int res;
1044
1045         if (!(s = alloca(strlen(path) + 10))) {
1046                 ast_log(LOG_WARNING, "Out of memory!\n");
1047                 return -1;
1048         }
1049
1050         snprintf(s, strlen(path) + 9, "%s/%s", path, ".lock");
1051
1052         if ((res = unlink(s)))
1053                 ast_log(LOG_ERROR, "Could not unlock path '%s': %s\n", path, strerror(errno));
1054         else {
1055                 if (option_debug)
1056                         ast_log(LOG_DEBUG, "Unlocked path '%s'\n", path);
1057         }
1058
1059         return res;
1060 }
1061
1062 int ast_record_review(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, const char *path)
1063 {
1064         int silencethreshold = 128;
1065         int maxsilence=0;
1066         int res = 0;
1067         int cmd = 0;
1068         int max_attempts = 3;
1069         int attempts = 0;
1070         int recorded = 0;
1071         int message_exists = 0;
1072         /* Note that urgent and private are for flagging messages as such in the future */
1073
1074         /* barf if no pointer passed to store duration in */
1075         if (duration == NULL) {
1076                 ast_log(LOG_WARNING, "Error ast_record_review called without duration pointer\n");
1077                 return -1;
1078         }
1079
1080         cmd = '3';       /* Want to start by recording */
1081
1082         while ((cmd >= 0) && (cmd != 't')) {
1083                 switch (cmd) {
1084                 case '1':
1085                         if (!message_exists) {
1086                                 /* In this case, 1 is to record a message */
1087                                 cmd = '3';
1088                                 break;
1089                         } else {
1090                                 ast_stream_and_wait(chan, "vm-msgsaved", chan->language, "");
1091                                 cmd = 't';
1092                                 return res;
1093                         }
1094                 case '2':
1095                         /* Review */
1096                         ast_verbose(VERBOSE_PREFIX_3 "Reviewing the recording\n");
1097                         cmd = ast_stream_and_wait(chan, recordfile, chan->language, AST_DIGIT_ANY);
1098                         break;
1099                 case '3':
1100                         message_exists = 0;
1101                         /* Record */
1102                         if (recorded == 1)
1103                                 ast_verbose(VERBOSE_PREFIX_3 "Re-recording\n");
1104                         else
1105                                 ast_verbose(VERBOSE_PREFIX_3 "Recording\n");
1106                         recorded = 1;
1107                         cmd = ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, silencethreshold, maxsilence, path);
1108                         if (cmd == -1) {
1109                         /* User has hung up, no options to give */
1110                                 return cmd;
1111                         }
1112                         if (cmd == '0') {
1113                                 break;
1114                         } else if (cmd == '*') {
1115                                 break;
1116                         }
1117                         else {
1118                                 /* If all is well, a message exists */
1119                                 message_exists = 1;
1120                                 cmd = 0;
1121                         }
1122                         break;
1123                 case '4':
1124                 case '5':
1125                 case '6':
1126                 case '7':
1127                 case '8':
1128                 case '9':
1129                 case '*':
1130                 case '#':
1131                         cmd = ast_play_and_wait(chan, "vm-sorry");
1132                         break;
1133                 default:
1134                         if (message_exists) {
1135                                 cmd = ast_play_and_wait(chan, "vm-review");
1136                         }
1137                         else {
1138                                 cmd = ast_play_and_wait(chan, "vm-torerecord");
1139                                 if (!cmd)
1140                                         cmd = ast_waitfordigit(chan, 600);
1141                         }
1142
1143                         if (!cmd)
1144                                 cmd = ast_waitfordigit(chan, 6000);
1145                         if (!cmd) {
1146                                 attempts++;
1147                         }
1148                         if (attempts > max_attempts) {
1149                                 cmd = 't';
1150                         }
1151                 }
1152         }
1153         if (cmd == 't')
1154                 cmd = 0;
1155         return cmd;
1156 }
1157
1158 #define RES_UPONE (1 << 16)
1159 #define RES_EXIT  (1 << 17)
1160 #define RES_REPEAT (1 << 18)
1161 #define RES_RESTART ((1 << 19) | RES_REPEAT)
1162
1163 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata);
1164
1165 static int ivr_dispatch(struct ast_channel *chan, struct ast_ivr_option *option, char *exten, void *cbdata)
1166 {
1167         int res;
1168         int (*ivr_func)(struct ast_channel *, void *);
1169         char *c;
1170         char *n;
1171
1172         switch(option->action) {
1173         case AST_ACTION_UPONE:
1174                 return RES_UPONE;
1175         case AST_ACTION_EXIT:
1176                 return RES_EXIT | (((unsigned long)(option->adata)) & 0xffff);
1177         case AST_ACTION_REPEAT:
1178                 return RES_REPEAT | (((unsigned long)(option->adata)) & 0xffff);
1179         case AST_ACTION_RESTART:
1180                 return RES_RESTART ;
1181         case AST_ACTION_NOOP:
1182                 return 0;
1183         case AST_ACTION_BACKGROUND:
1184                 res = ast_stream_and_wait(chan, (char *)option->adata, chan->language, AST_DIGIT_ANY);
1185                 if (res < 0) {
1186                         ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
1187                         res = 0;
1188                 }
1189                 return res;
1190         case AST_ACTION_PLAYBACK:
1191                 res = ast_stream_and_wait(chan, (char *)option->adata, chan->language, "");
1192                 if (res < 0) {
1193                         ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
1194                         res = 0;
1195                 }
1196                 return res;
1197         case AST_ACTION_MENU:
1198                 res = ast_ivr_menu_run_internal(chan, (struct ast_ivr_menu *)option->adata, cbdata);
1199                 /* Do not pass entry errors back up, treaat ast though ti was an "UPONE" */
1200                 if (res == -2)
1201                         res = 0;
1202                 return res;
1203         case AST_ACTION_WAITOPTION:
1204                 res = ast_waitfordigit(chan, 1000 * (chan->pbx ? chan->pbx->rtimeout : 10));
1205                 if (!res)
1206                         return 't';
1207                 return res;
1208         case AST_ACTION_CALLBACK:
1209                 ivr_func = option->adata;
1210                 res = ivr_func(chan, cbdata);
1211                 return res;
1212         case AST_ACTION_TRANSFER:
1213                 res = ast_parseable_goto(chan, option->adata);
1214                 return 0;
1215         case AST_ACTION_PLAYLIST:
1216         case AST_ACTION_BACKLIST:
1217                 res = 0;
1218                 c = ast_strdupa(option->adata);
1219                 while ((n = strsep(&c, ";"))) {
1220                         if ((res = ast_stream_and_wait(chan, n, chan->language,
1221                                         (option->action == AST_ACTION_BACKLIST) ? AST_DIGIT_ANY : "")))
1222                                 break;
1223                 }
1224                 ast_stopstream(chan);
1225                 return res;
1226         default:
1227                 ast_log(LOG_NOTICE, "Unknown dispatch function %d, ignoring!\n", option->action);
1228                 return 0;
1229         };
1230         return -1;
1231 }
1232
1233 static int option_exists(struct ast_ivr_menu *menu, char *option)
1234 {
1235         int x;
1236         for (x = 0; menu->options[x].option; x++)
1237                 if (!strcasecmp(menu->options[x].option, option))
1238                         return x;
1239         return -1;
1240 }
1241
1242 static int option_matchmore(struct ast_ivr_menu *menu, char *option)
1243 {
1244         int x;
1245         for (x = 0; menu->options[x].option; x++)
1246                 if ((!strncasecmp(menu->options[x].option, option, strlen(option))) &&
1247                                 (menu->options[x].option[strlen(option)]))
1248                         return x;
1249         return -1;
1250 }
1251
1252 static int read_newoption(struct ast_channel *chan, struct ast_ivr_menu *menu, char *exten, int maxexten)
1253 {
1254         int res=0;
1255         int ms;
1256         while (option_matchmore(menu, exten)) {
1257                 ms = chan->pbx ? chan->pbx->dtimeout : 5000;
1258                 if (strlen(exten) >= maxexten - 1)
1259                         break;
1260                 res = ast_waitfordigit(chan, ms);
1261                 if (res < 1)
1262                         break;
1263                 exten[strlen(exten) + 1] = '\0';
1264                 exten[strlen(exten)] = res;
1265         }
1266         return res > 0 ? 0 : res;
1267 }
1268
1269 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
1270 {
1271         /* Execute an IVR menu structure */
1272         int res=0;
1273         int pos = 0;
1274         int retries = 0;
1275         char exten[AST_MAX_EXTENSION] = "s";
1276         if (option_exists(menu, "s") < 0) {
1277                 strcpy(exten, "g");
1278                 if (option_exists(menu, "g") < 0) {
1279                         ast_log(LOG_WARNING, "No 's' nor 'g' extension in menu '%s'!\n", menu->title);
1280                         return -1;
1281                 }
1282         }
1283         while(!res) {
1284                 while(menu->options[pos].option) {
1285                         if (!strcasecmp(menu->options[pos].option, exten)) {
1286                                 res = ivr_dispatch(chan, menu->options + pos, exten, cbdata);
1287                                 if (option_debug)
1288                                         ast_log(LOG_DEBUG, "IVR Dispatch of '%s' (pos %d) yields %d\n", exten, pos, res);
1289                                 if (res < 0)
1290                                         break;
1291                                 else if (res & RES_UPONE)
1292                                         return 0;
1293                                 else if (res & RES_EXIT)
1294                                         return res;
1295                                 else if (res & RES_REPEAT) {
1296                                         int maxretries = res & 0xffff;
1297                                         if ((res & RES_RESTART) == RES_RESTART) {
1298                                                 retries = 0;
1299                                         } else
1300                                                 retries++;
1301                                         if (!maxretries)
1302                                                 maxretries = 3;
1303                                         if ((maxretries > 0) && (retries >= maxretries)) {
1304                                                 if (option_debug)
1305                                                         ast_log(LOG_DEBUG, "Max retries %d exceeded\n", maxretries);
1306                                                 return -2;
1307                                         } else {
1308                                                 if (option_exists(menu, "g") > -1)
1309                                                         strcpy(exten, "g");
1310                                                 else if (option_exists(menu, "s") > -1)
1311                                                         strcpy(exten, "s");
1312                                         }
1313                                         pos = 0;
1314                                         continue;
1315                                 } else if (res && strchr(AST_DIGIT_ANY, res)) {
1316                                         if (option_debug)
1317                                                 ast_log(LOG_DEBUG, "Got start of extension, %c\n", res);
1318                                         exten[1] = '\0';
1319                                         exten[0] = res;
1320                                         if ((res = read_newoption(chan, menu, exten, sizeof(exten))))
1321                                                 break;
1322                                         if (option_exists(menu, exten) < 0) {
1323                                                 if (option_exists(menu, "i")) {
1324                                                         if (option_debug)
1325                                                                 ast_log(LOG_DEBUG, "Invalid extension entered, going to 'i'!\n");
1326                                                         strcpy(exten, "i");
1327                                                         pos = 0;
1328                                                         continue;
1329                                                 } else {
1330                                                         if (option_debug)
1331                                                                 ast_log(LOG_DEBUG, "Aborting on invalid entry, with no 'i' option!\n");
1332                                                         res = -2;
1333                                                         break;
1334                                                 }
1335                                         } else {
1336                                                 if (option_debug)
1337                                                         ast_log(LOG_DEBUG, "New existing extension: %s\n", exten);
1338                                                 pos = 0;
1339                                                 continue;
1340                                         }
1341                                 }
1342                         }
1343                         pos++;
1344                 }
1345                 if (option_debug)
1346                         ast_log(LOG_DEBUG, "Stopping option '%s', res is %d\n", exten, res);
1347                 pos = 0;
1348                 if (!strcasecmp(exten, "s"))
1349                         strcpy(exten, "g");
1350                 else
1351                         break;
1352         }
1353         return res;
1354 }
1355
1356 int ast_ivr_menu_run(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
1357 {
1358         int res = ast_ivr_menu_run_internal(chan, menu, cbdata);
1359         /* Hide internal coding */
1360         return res > 0 ? 0 : res;
1361 }
1362
1363 char *ast_read_textfile(const char *filename)
1364 {
1365         int fd;
1366         char *output = NULL;
1367         struct stat filesize;
1368         int count = 0;
1369         int res;
1370         if (stat(filename, &filesize) == -1) {
1371                 ast_log(LOG_WARNING, "Error can't stat %s\n", filename);
1372                 return NULL;
1373         }
1374         count = filesize.st_size + 1;
1375         fd = open(filename, O_RDONLY);
1376         if (fd < 0) {
1377                 ast_log(LOG_WARNING, "Cannot open file '%s' for reading: %s\n", filename, strerror(errno));
1378                 return NULL;
1379         }
1380         if ((output = ast_malloc(count))) {
1381                 res = read(fd, output, count - 1);
1382                 if (res == count - 1) {
1383                         output[res] = '\0';
1384                 } else {
1385                         ast_log(LOG_WARNING, "Short read of %s (%d of %d): %s\n", filename, res, count - 1, strerror(errno));
1386                         free(output);
1387                         output = NULL;
1388                 }
1389         }
1390         close(fd);
1391         return output;
1392 }
1393
1394 void ast_app_options2str(const struct ast_app_option *options, struct ast_flags *flags, char *buf, size_t len)
1395 {
1396         unsigned int i, found = 0;
1397
1398         for (i = 32; i < 128 && found < len;i++) {
1399                 if (ast_test_flag(flags, options[i].flag)) {
1400                         buf[found++] = i;
1401                 }
1402         }
1403         buf[found] = '\0';
1404 }
1405
1406 int ast_app_parse_options(const struct ast_app_option *options, struct ast_flags *flags, char **args, char *optstr)
1407 {
1408         char *s;
1409         int curarg;
1410         unsigned int argloc;
1411         char *arg;
1412         int res = 0;
1413
1414         ast_clear_flag(flags, AST_FLAGS_ALL);
1415
1416         if (!optstr)
1417                 return 0;
1418
1419         s = optstr;
1420         while (*s) {
1421                 curarg = *s++ & 0x7f;   /* the array (in app.h) has 128 entries */
1422                 argloc = options[curarg].arg_index;
1423                 if (*s == '(') {
1424                         /* Has argument */
1425                         arg = ++s;
1426                         if ((s = strchr(s, ')'))) {
1427                                 if (argloc)
1428                                         args[argloc - 1] = arg;
1429                                 *s++ = '\0';
1430                         } else {
1431                                 ast_log(LOG_WARNING, "Missing closing parenthesis for argument '%c' in string '%s'\n", curarg, arg);
1432                                 res = -1;
1433                                 break;
1434                         }
1435                 } else if (argloc) {
1436                         args[argloc - 1] = "";
1437                 }
1438                 ast_set_flag(flags, options[curarg].flag);
1439         }
1440
1441         return res;
1442 }
1443