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                 if (peer) {
 232                         ast_autoservice_stop(peer);
 233                 }
 234                 return res;
 235         }
 236
 237         if (ast_opt_transmit_silence) {
 238                 silgen = ast_channel_start_silence_generator(chan);
 239         }
 240
 241         for (ptr = digits; *ptr; ptr++) {
 242                 if (*ptr == 'w') {
 243                         /* 'w' -- wait half a second */
 244                         if ((res = ast_safe_sleep(chan, 500)))
 245                                 break;
 246                 } else if (strchr("0123456789*#abcdfABCDF", *ptr)) {
 247                         /* Character represents valid DTMF */
 248                         if (*ptr == 'f' || *ptr == 'F') {
 249                                 /* ignore return values if not supported by channel */
 250                                 ast_indicate(chan, AST_CONTROL_FLASH);
 251                         } else
 252                                 ast_senddigit(chan, *ptr);
 253                         /* pause between digits */
 254                         if ((res = ast_safe_sleep(chan, between)))
 255                                 break;
 256                 } else
 257                         ast_log(LOG_WARNING, "Illegal DTMF character '%c' in string. (0-9*#aAbBcCdD allowed)\n",*ptr);
 258         }
 259
 260         if (peer) {
 261                 /* Stop autoservice on the peer channel, but don't overwrite any error condition
 262                    that has occurred previously while acting on the primary channel */
 263                 if (ast_autoservice_stop(peer) && !res)
 264                         res = -1;
 265         }
 266
 267         if (silgen) {
 268                 ast_channel_stop_silence_generator(chan, silgen);
 269         }
 270
 271         return res;
 272 }
 273
 274 struct linear_state {
 275         int fd;
 276         int autoclose;
 277         int allowoverride;
 278         int origwfmt;
 279 };
 280
 281 static void linear_release(struct ast_channel *chan, void *params)
 282 {
 283         struct linear_state *ls = params;
 284         if (ls->origwfmt && ast_set_write_format(chan, ls->origwfmt)) {
 285                 ast_log(LOG_WARNING, "Unable to restore channel '%s' to format '%d'\n", chan->name, ls->origwfmt);
 286         }
 287         if (ls->autoclose)
 288                 close(ls->fd);
 289         free(params);
 290 }
 291
 292 static int linear_generator(struct ast_channel *chan, void *data, int len, int samples)
 293 {
 294         struct ast_frame f;
 295         short buf[2048 + AST_FRIENDLY_OFFSET / 2];
 296         struct linear_state *ls = data;
 297         int res;
 298         len = samples * 2;
 299         if (len > sizeof(buf) - AST_FRIENDLY_OFFSET) {
 300                 ast_log(LOG_WARNING, "Can't generate %d bytes of data!\n" ,len);
 301                 len = sizeof(buf) - AST_FRIENDLY_OFFSET;
 302         }
 303         memset(&f, 0, sizeof(f));
 304         res = read(ls->fd, buf + AST_FRIENDLY_OFFSET/2, len);
 305         if (res > 0) {
 306                 f.frametype = AST_FRAME_VOICE;
 307                 f.subclass = AST_FORMAT_SLINEAR;
 308                 f.data = buf + AST_FRIENDLY_OFFSET/2;
 309                 f.datalen = res;
 310                 f.samples = res / 2;
 311                 f.offset = AST_FRIENDLY_OFFSET;
 312                 ast_write(chan, &f);
 313                 if (res == len)
 314                         return 0;
 315         }
 316         return -1;
 317 }
 318
 319 static void *linear_alloc(struct ast_channel *chan, void *params)
 320 {
 321         struct linear_state *ls;
 322         /* In this case, params is already malloc'd */
 323         if (params) {
 324                 ls = params;
 325                 if (ls->allowoverride)
 326                         ast_set_flag(chan, AST_FLAG_WRITE_INT);
 327                 else
 328                         ast_clear_flag(chan, AST_FLAG_WRITE_INT);
 329                 ls->origwfmt = chan->writeformat;
 330                 if (ast_set_write_format(chan, AST_FORMAT_SLINEAR)) {
 331                         ast_log(LOG_WARNING, "Unable to set '%s' to linear format (write)\n", chan->name);
 332                         free(ls);
 333                         ls = params = NULL;
 334                 }
 335         }
 336         return params;
 337 }
 338
 339 static struct ast_generator linearstream =
 340 {
 341         alloc: linear_alloc,
 342         release: linear_release,
 343         generate: linear_generator,
 344 };
 345
 346 int ast_linear_stream(struct ast_channel *chan, const char *filename, int fd, int allowoverride)
 347 {
 348         struct linear_state *lin;
 349         char tmpf[256];
 350         int res = -1;
 351         int autoclose = 0;
 352         if (fd < 0) {
 353                 if (ast_strlen_zero(filename))
 354                         return -1;
 355                 autoclose = 1;
 356                 if (filename[0] == '/')
 357                         ast_copy_string(tmpf, filename, sizeof(tmpf));
 358                 else
 359                         snprintf(tmpf, sizeof(tmpf), "%s/%s/%s", (char *)ast_config_AST_DATA_DIR, "sounds", filename);
 360                 fd = open(tmpf, O_RDONLY);
 361                 if (fd < 0){
 362                         ast_log(LOG_WARNING, "Unable to open file '%s': %s\n", tmpf, strerror(errno));
 363                         return -1;
 364                 }
 365         }
 366         if ((lin = ast_calloc(1, sizeof(*lin)))) {
 367                 lin->fd = fd;
 368                 lin->allowoverride = allowoverride;
 369                 lin->autoclose = autoclose;
 370                 res = ast_activate_generator(chan, &linearstream, lin);
 371         }
 372         return res;
 373 }
 374
 375 int ast_control_streamfile(struct ast_channel *chan, const char *file,
 376                            const char *fwd, const char *rev,
 377                            const char *stop, const char *pause,
 378                            const char *restart, int skipms)
 379 {
 380         char *breaks = NULL;
 381         char *end = NULL;
 382         int blen = 2;
 383         int res;
 384         long pause_restart_point = 0;
 385
 386         if (stop)
 387                 blen += strlen(stop);
 388         if (pause)
 389                 blen += strlen(pause);
 390         if (restart)
 391                 blen += strlen(restart);
 392
 393         if (blen > 2) {
 394                 breaks = alloca(blen + 1);
 395                 breaks[0] = '\0';
 396                 if (stop)
 397                         strcat(breaks, stop);
 398                 if (pause)
 399                         strcat(breaks, pause);
 400                 if (restart)
 401                         strcat(breaks, restart);
 402         }
 403         if (chan->_state != AST_STATE_UP)
 404                 res = ast_answer(chan);
 405
 406         if (file) {
 407                 if ((end = strchr(file,':'))) {
 408                         if (!strcasecmp(end, ":end")) {
 409                                 *end = '\0';
 410                                 end++;
 411                         }
 412                 }
 413         }
 414
 415         for (;;) {
 416                 ast_stopstream(chan);
 417                 res = ast_streamfile(chan, file, chan->language);
 418                 if (!res) {
 419                         if (pause_restart_point) {
 420                                 ast_seekstream(chan->stream, pause_restart_point, SEEK_SET);
 421                                 pause_restart_point = 0;
 422                         }
 423                         else if (end) {
 424                                 ast_seekstream(chan->stream, 0, SEEK_END);
 425                                 end = NULL;
 426                         };
 427                         res = ast_waitstream_fr(chan, breaks, fwd, rev, skipms);
 428                 }
 429
 430                 if (res < 1)
 431                         break;
 432
 433                 /* We go at next loop if we got the restart char */
 434                 if (restart && strchr(restart, res)) {
 435                         if (option_debug)
 436                                 ast_log(LOG_DEBUG, "we'll restart the stream here at next loop\n");
 437                         pause_restart_point = 0;
 438                         continue;
 439                 }
 440
 441                 if (pause && strchr(pause, res)) {
 442                         pause_restart_point = ast_tellstream(chan->stream);
 443                         for (;;) {
 444                                 ast_stopstream(chan);
 445                                 res = ast_waitfordigit(chan, 1000);
 446                                 if (!res)
 447                                         continue;
 448                                 else if (res == -1 || strchr(pause, res) || (stop && strchr(stop, res)))
 449                                         break;
 450                         }
 451                         if (res == *pause) {
 452                                 res = 0;
 453                                 continue;
 454                         }
 455                 }
 456
 457                 if (res == -1)
 458                         break;
 459
 460                 /* if we get one of our stop chars, return it to the calling function */
 461                 if (stop && strchr(stop, res))
 462                         break;
 463         }
 464
 465         /* If we are returning a digit cast it as char */
 466         if (res > 0 || chan->stream)
 467                 res = (char)res;
 468
 469         ast_stopstream(chan);
 470
 471         return res;
 472 }
 473
 474 int ast_play_and_wait(struct ast_channel *chan, const char *fn)
 475 {
 476         int d;
 477         d = ast_streamfile(chan, fn, chan->language);
 478         if (d)
 479                 return d;
 480         d = ast_waitstream(chan, AST_DIGIT_ANY);
 481         ast_stopstream(chan);
 482         return d;
 483 }
 484
 485 static int global_silence_threshold = 128;
 486 static int global_maxsilence = 0;
 487
 488 /*! Optionally play a sound file or a beep, then record audio and video from the channel.
 489  * @param chan Channel to playback to/record from.
 490  * @param playfile Filename of sound to play before recording begins.
 491  * @param recordfile Filename to record to.
 492  * @param maxtime Maximum length of recording (in milliseconds).
 493  * @param fmt Format(s) to record message in. Multiple formats may be specified by separating them with a '|'.
 494  * @param duration Where to store actual length of the recorded message (in milliseconds).
 495  * @param beep Whether to play a beep before starting to record.
 496  * @param silencethreshold
 497  * @param maxsilence Length of silence that will end a recording (in milliseconds).
 498  * @param path Optional filesystem path to unlock.
 499  * @param prepend If true, prepend the recorded audio to an existing file.
 500  * @param acceptdtmf DTMF digits that will end the recording.
 501  * @param canceldtmf DTMF digits that will cancel the recording.
 502  */
 503
 504 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)
 505 {
 506         int d = 0;
 507         char *fmts;
 508         char comment[256];
 509         int x, fmtcnt = 1, res = -1, outmsg = 0;
 510         struct ast_filestream *others[MAX_OTHER_FORMATS];
 511         char *sfmt[MAX_OTHER_FORMATS];
 512         char *stringp = NULL;
 513         time_t start, end;
 514         struct ast_dsp *sildet = NULL;   /* silence detector dsp */
 515         int totalsilence = 0;
 516         int rfmt = 0;
 517         struct ast_silence_generator *silgen = NULL;
 518         char prependfile[80];
 519
 520         if (silencethreshold < 0)
 521                 silencethreshold = global_silence_threshold;
 522
 523         if (maxsilence < 0)
 524                 maxsilence = global_maxsilence;
 525
 526         /* barf if no pointer passed to store duration in */
 527         if (duration == NULL) {
 528                 ast_log(LOG_WARNING, "Error play_and_record called without duration pointer\n");
 529                 return -1;
 530         }
 531
 532         if (option_debug)
 533                 ast_log(LOG_DEBUG,"play_and_record: %s, %s, '%s'\n", playfile ? playfile : "<None>", recordfile, fmt);
 534         snprintf(comment, sizeof(comment), "Playing %s, Recording to: %s on %s\n", playfile ? playfile : "<None>", recordfile, chan->name);
 535
 536         if (playfile || beep) {
 537                 if (!beep)
 538                         d = ast_play_and_wait(chan, playfile);
 539                 if (d > -1)
 540                         d = ast_stream_and_wait(chan, "beep", chan->language, "");
 541                 if (d < 0)
 542                         return -1;
 543         }
 544
 545         if (prepend) {
 546                 ast_copy_string(prependfile, recordfile, sizeof(prependfile));
 547                 strncat(prependfile, "-prepend", sizeof(prependfile) - strlen(prependfile) - 1);
 548         }
 549
 550         fmts = ast_strdupa(fmt);
 551
 552         stringp = fmts;
 553         strsep(&stringp, "|");
 554         if (option_debug)
 555                 ast_log(LOG_DEBUG, "Recording Formats: sfmts=%s\n", fmts);
 556         sfmt[0] = ast_strdupa(fmts);
 557
 558         while ((fmt = strsep(&stringp, "|"))) {
 559                 if (fmtcnt > MAX_OTHER_FORMATS - 1) {
 560                         ast_log(LOG_WARNING, "Please increase MAX_OTHER_FORMATS in app.c\n");
 561                         break;
 562                 }
 563                 sfmt[fmtcnt++] = ast_strdupa(fmt);
 564         }
 565
 566         end = start = time(NULL);  /* pre-initialize end to be same as start in case we never get into loop */
 567         for (x = 0; x < fmtcnt; x++) {
 568                 others[x] = ast_writefile(prepend ? prependfile : recordfile, sfmt[x], comment, O_TRUNC, 0, 0777);
 569                 if (option_verbose > 2)
 570                         ast_verbose(VERBOSE_PREFIX_3 "x=%d, open writing:  %s format: %s, %p\n", x, prepend ? prependfile : recordfile, sfmt[x], others[x]);
 571
 572                 if (!others[x])
 573                         break;
 574         }
 575
 576         if (path)
 577                 ast_unlock_path(path);
 578
 579         if (maxsilence > 0) {
 580                 sildet = ast_dsp_new(); /* Create the silence detector */
 581                 if (!sildet) {
 582                         ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
 583                         return -1;
 584                 }
 585                 ast_dsp_set_threshold(sildet, silencethreshold);
 586                 rfmt = chan->readformat;
 587                 res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
 588                 if (res < 0) {
 589                         ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
 590                         ast_dsp_free(sildet);
 591                         return -1;
 592                 }
 593         }
 594
 595         if (!prepend) {
 596                 /* Request a video update */
 597                 ast_indicate(chan, AST_CONTROL_VIDUPDATE);
 598
 599                 if (ast_opt_transmit_silence)
 600                         silgen = ast_channel_start_silence_generator(chan);
 601         }
 602
 603         if (x == fmtcnt) {
 604                 /* Loop forever, writing the packets we read to the writer(s), until
 605                    we read a digit or get a hangup */
 606                 struct ast_frame *f;
 607                 for (;;) {
 608                         res = ast_waitfor(chan, 2000);
 609                         if (!res) {
 610                                 if (option_debug)
 611                                         ast_log(LOG_DEBUG, "One waitfor failed, trying another\n");
 612                                 /* Try one more time in case of masq */
 613                                 res = ast_waitfor(chan, 2000);
 614                                 if (!res) {
 615                                         ast_log(LOG_WARNING, "No audio available on %s??\n", chan->name);
 616                                         res = -1;
 617                                 }
 618                         }
 619
 620                         if (res < 0) {
 621                                 f = NULL;
 622                                 break;
 623                         }
 624                         f = ast_read(chan);
 625                         if (!f)
 626                                 break;
 627                         if (f->frametype == AST_FRAME_VOICE) {
 628                                 /* write each format */
 629                                 for (x = 0; x < fmtcnt; x++) {
 630                                         if (prepend && !others[x])
 631                                                 break;
 632                                         res = ast_writestream(others[x], f);
 633                                 }
 634
 635                                 /* Silence Detection */
 636                                 if (maxsilence > 0) {
 637                                         int dspsilence = 0;
 638                                         ast_dsp_silence(sildet, f, &dspsilence);
 639                                         if (dspsilence)
 640                                                 totalsilence = dspsilence;
 641                                         else
 642                                                 totalsilence = 0;
 643
 644                                         if (totalsilence > maxsilence) {
 645                                                 /* Ended happily with silence */
 646                                                 if (option_verbose > 2)
 647                                                         ast_verbose( VERBOSE_PREFIX_3 "Recording automatically stopped after a silence of %d seconds\n", totalsilence/1000);
 648                                                 res = 'S';
 649                                                 outmsg = 2;
 650                                                 break;
 651                                         }
 652                                 }
 653                                 /* Exit on any error */
 654                                 if (res) {
 655                                         ast_log(LOG_WARNING, "Error writing frame\n");
 656                                         break;
 657                                 }
 658                         } else if (f->frametype == AST_FRAME_VIDEO) {
 659                                 /* Write only once */
 660                                 ast_writestream(others[0], f);
 661                         } else if (f->frametype == AST_FRAME_DTMF) {
 662                                 if (prepend) {
 663                                 /* stop recording with any digit */
 664                                         if (option_verbose > 2)
 665                                                 ast_verbose(VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
 666                                         res = 't';
 667                                         outmsg = 2;
 668                                         break;
 669                                 }
 670                                 if (strchr(acceptdtmf, f->subclass)) {
 671                                         if (option_verbose > 2)
 672                                                 ast_verbose(VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
 673                                         res = f->subclass;
 674                                         outmsg = 2;
 675                                         break;
 676                                 }
 677                                 if (strchr(canceldtmf, f->subclass)) {
 678                                         if (option_verbose > 2)
 679                                                 ast_verbose(VERBOSE_PREFIX_3 "User cancelled message by pressing %c\n", f->subclass);
 680                                         res = f->subclass;
 681                                         outmsg = 0;
 682                                         break;
 683                                 }
 684                         }
 685                         if (maxtime) {
 686                                 end = time(NULL);
 687                                 if (maxtime < (end - start)) {
 688                                         if (option_verbose > 2)
 689                                                 ast_verbose(VERBOSE_PREFIX_3 "Took too long, cutting it short...\n");
 690                                         res = 't';
 691                                         outmsg = 2;
 692                                         break;
 693                                 }
 694                         }
 695                         ast_frfree(f);
 696                 }
 697                 if (!f) {
 698                         if (option_verbose > 2)
 699                                 ast_verbose(VERBOSE_PREFIX_3 "User hung up\n");
 700                         res = -1;
 701                         outmsg = 1;
 702                 } else {
 703                         ast_frfree(f);
 704                 }
 705         } else {
 706                 ast_log(LOG_WARNING, "Error creating writestream '%s', format '%s'\n", recordfile, sfmt[x]);
 707         }
 708
 709         if (!prepend) {
 710                 if (silgen)
 711                         ast_channel_stop_silence_generator(chan, silgen);
 712         }
 713
 714         /*!\note
 715          * Instead of asking how much time passed (end - start), calculate the number
 716          * of seconds of audio which actually went into the file.  This fixes a
 717          * problem where audio is stopped up on the network and never gets to us.
 718          *
 719          * Note that we still want to use the number of seconds passed for the max
 720          * message, otherwise we could get a situation where this stream is never
 721          * closed (which would create a resource leak).
 722          */
 723         *duration = others[0] ? ast_tellstream(others[0]) / 8000 : 0;
 724
 725         if (!prepend) {
 726                 for (x = 0; x < fmtcnt; x++) {
 727                         if (!others[x])
 728                                 break;
 729                         /*!\note
 730                          * If we ended with silence, trim all but the first 200ms of silence
 731                          * off the recording.  However, if we ended with '#', we don't want
 732                          * to trim ANY part of the recording.
 733                          */
 734                         if (res > 0 && totalsilence)
 735                                 ast_stream_rewind(others[x], totalsilence - 200);
 736                         ast_truncstream(others[x]);
 737                         ast_closestream(others[x]);
 738                 }
 739         }
 740
 741         if (prepend && outmsg) {
 742                 struct ast_filestream *realfiles[MAX_OTHER_FORMATS];
 743                 struct ast_frame *fr;
 744
 745                 for (x = 0; x < fmtcnt; x++) {
 746                         snprintf(comment, sizeof(comment), "Opening the real file %s.%s\n", recordfile, sfmt[x]);
 747                         realfiles[x] = ast_readfile(recordfile, sfmt[x], comment, O_RDONLY, 0, 0);
 748                         if (!others[x] || !realfiles[x])
 749                                 break;
 750                         /*!\note Same logic as above. */
 751                         if (totalsilence)
 752                                 ast_stream_rewind(others[x], totalsilence - 200);
 753                         ast_truncstream(others[x]);
 754                         /* add the original file too */
 755                         while ((fr = ast_readframe(realfiles[x]))) {
 756                                 ast_writestream(others[x], fr);
 757                                 ast_frfree(fr);
 758                         }
 759                         ast_closestream(others[x]);
 760                         ast_closestream(realfiles[x]);
 761                         ast_filerename(prependfile, recordfile, sfmt[x]);
 762                         if (option_verbose > 3)
 763                                 ast_verbose(VERBOSE_PREFIX_4 "Recording Format: sfmts=%s, prependfile %s, recordfile %s\n", sfmt[x], prependfile, recordfile);
 764                         ast_filedelete(prependfile, sfmt[x]);
 765                 }
 766         }
 767         if (rfmt && ast_set_read_format(chan, rfmt)) {
 768                 ast_log(LOG_WARNING, "Unable to restore format %s to channel '%s'\n", ast_getformatname(rfmt), chan->name);
 769         }
 770         if (outmsg == 2) {
 771                 ast_stream_and_wait(chan, "auth-thankyou", chan->language, "");
 772         }
 773         if (sildet)
 774                 ast_dsp_free(sildet);
 775         return res;
 776 }
 777
 778 static char default_acceptdtmf[] = "#";
 779 static char default_canceldtmf[] = "";
 780
 781 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)
 782 {
 783         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));
 784 }
 785
 786 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)
 787 {
 788         return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, 0, silencethreshold, maxsilence, path, 0, default_acceptdtmf, default_canceldtmf);
 789 }
 790
 791 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)
 792 {
 793         return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, beep, silencethreshold, maxsilence, NULL, 1, default_acceptdtmf, default_canceldtmf);
 794 }
 795
 796 /* Channel group core functions */
 797
 798 int ast_app_group_split_group(const char *data, char *group, int group_max, char *category, int category_max)
 799 {
 800         int res=0;
 801         char tmp[256];
 802         char *grp=NULL, *cat=NULL;
 803
 804         if (!ast_strlen_zero(data)) {
 805                 ast_copy_string(tmp, data, sizeof(tmp));
 806                 grp = tmp;
 807                 cat = strchr(tmp, '@');
 808                 if (cat) {
 809                         *cat = '\0';
 810                         cat++;
 811                 }
 812         }
 813
 814         if (!ast_strlen_zero(grp))
 815                 ast_copy_string(group, grp, group_max);
 816         else
 817                 *group = '\0';
 818
 819         if (!ast_strlen_zero(cat))
 820                 ast_copy_string(category, cat, category_max);
 821
 822         return res;
 823 }
 824
 825 int ast_app_group_set_channel(struct ast_channel *chan, const char *data)
 826 {
 827         int res = 0;
 828         char group[80] = "", category[80] = "";
 829         struct ast_group_info *gi = NULL;
 830         size_t len = 0;
 831
 832         if (ast_app_group_split_group(data, group, sizeof(group), category, sizeof(category)))
 833                 return -1;
 834
 835         /* Calculate memory we will need if this is new */
 836         len = sizeof(*gi) + strlen(group) + 1;
 837         if (!ast_strlen_zero(category))
 838                 len += strlen(category) + 1;
 839
 840         AST_LIST_LOCK(&groups);
 841         AST_LIST_TRAVERSE_SAFE_BEGIN(&groups, gi, list) {
 842                 if ((gi->chan == chan) && ((ast_strlen_zero(category) && ast_strlen_zero(gi->category)) || (!ast_strlen_zero(gi->category) && !strcasecmp(gi->category, category)))) {
 843                         AST_LIST_REMOVE_CURRENT(&groups, list);
 844                         free(gi);
 845                         break;
 846                 }
 847         }
 848         AST_LIST_TRAVERSE_SAFE_END
 849
 850         if (ast_strlen_zero(group)) {
 851                 /* Enable unsetting the group */
 852         } else if ((gi = calloc(1, len))) {
 853                 gi->chan = chan;
 854                 gi->group = (char *) gi + sizeof(*gi);
 855                 strcpy(gi->group, group);
 856                 if (!ast_strlen_zero(category)) {
 857                         gi->category = (char *) gi + sizeof(*gi) + strlen(group) + 1;
 858                         strcpy(gi->category, category);
 859                 }
 860                 AST_LIST_INSERT_TAIL(&groups, gi, list);
 861         } else {
 862                 res = -1;
 863         }
 864
 865         AST_LIST_UNLOCK(&groups);
 866
 867         return res;
 868 }
 869
 870 int ast_app_group_get_count(const char *group, const char *category)
 871 {
 872         struct ast_group_info *gi = NULL;
 873         int count = 0;
 874
 875         if (ast_strlen_zero(group))
 876                 return 0;
 877
 878         AST_LIST_LOCK(&groups);
 879         AST_LIST_TRAVERSE(&groups, gi, list) {
 880                 if (!strcasecmp(gi->group, group) && (ast_strlen_zero(category) || (!ast_strlen_zero(gi->category) && !strcasecmp(gi->category, category))))
 881                         count++;
 882         }
 883         AST_LIST_UNLOCK(&groups);
 884
 885         return count;
 886 }
 887
 888 int ast_app_group_match_get_count(const char *groupmatch, const char *category)
 889 {
 890         struct ast_group_info *gi = NULL;
 891         regex_t regexbuf;
 892         int count = 0;
 893
 894         if (ast_strlen_zero(groupmatch))
 895                 return 0;
 896
 897         /* if regex compilation fails, return zero matches */
 898         if (regcomp(&regexbuf, groupmatch, REG_EXTENDED | REG_NOSUB))
 899                 return 0;
 900
 901         AST_LIST_LOCK(&groups);
 902         AST_LIST_TRAVERSE(&groups, gi, list) {
 903                 if (!regexec(&regexbuf, gi->group, 0, NULL, 0) && (ast_strlen_zero(category) || (!ast_strlen_zero(gi->category) && !strcasecmp(gi->category, category))))
 904                         count++;
 905         }
 906         AST_LIST_UNLOCK(&groups);
 907
 908         regfree(&regexbuf);
 909
 910         return count;
 911 }
 912
 913 int ast_app_group_update(struct ast_channel *old, struct ast_channel *new)
 914 {
 915         struct ast_group_info *gi = NULL;
 916
 917         AST_LIST_LOCK(&groups);
 918         AST_LIST_TRAVERSE(&groups, gi, list) {
 919                 if (gi->chan == old)
 920                         gi->chan = new;
 921         }
 922         AST_LIST_UNLOCK(&groups);
 923
 924         return 0;
 925 }
 926
 927 int ast_app_group_discard(struct ast_channel *chan)
 928 {
 929         struct ast_group_info *gi = NULL;
 930
 931         AST_LIST_LOCK(&groups);
 932         AST_LIST_TRAVERSE_SAFE_BEGIN(&groups, gi, list) {
 933                 if (gi->chan == chan) {
 934                         AST_LIST_REMOVE_CURRENT(&groups, list);
 935                         free(gi);
 936                 }
 937         }
 938         AST_LIST_TRAVERSE_SAFE_END
 939         AST_LIST_UNLOCK(&groups);
 940
 941         return 0;
 942 }
 943
 944 int ast_app_group_list_lock(void)
 945 {
 946         return AST_LIST_LOCK(&groups);
 947 }
 948
 949 struct ast_group_info *ast_app_group_list_head(void)
 950 {
 951         return AST_LIST_FIRST(&groups);
 952 }
 953
 954 int ast_app_group_list_unlock(void)
 955 {
 956         return AST_LIST_UNLOCK(&groups);
 957 }
 958
 959 unsigned int ast_app_separate_args(char *buf, char delim, char **array, int arraylen)
 960 {
 961         int argc;
 962         char *scan, *wasdelim = NULL;
 963         int paren = 0, quote = 0;
 964
 965         if (!buf || !array || !arraylen)
 966                 return 0;
 967
 968         memset(array, 0, arraylen * sizeof(*array));
 969
 970         scan = buf;
 971
 972         for (argc = 0; *scan && (argc < arraylen - 1); argc++) {
 973                 array[argc] = scan;
 974                 for (; *scan; scan++) {
 975                         if (*scan == '(')
 976                                 paren++;
 977                         else if (*scan == ')') {
 978                                 if (paren)
 979                                         paren--;
 980                         } else if (*scan == '"' && delim != '"') {
 981                                 quote = quote ? 0 : 1;
 982                                 /* Remove quote character from argument */
 983                                 memmove(scan, scan + 1, strlen(scan));
 984                                 scan--;
 985                         } else if (*scan == '\\') {
 986                                 /* Literal character, don't parse */
 987                                 memmove(scan, scan + 1, strlen(scan));
 988                         } else if ((*scan == delim) && !paren && !quote) {
 989                                 wasdelim = scan;
 990                                 *scan++ = '\0';
 991                                 break;
 992                         }
 993                 }
 994         }
 995
 996         /* If the last character in the original string was the delimiter, then
 997          * there is one additional argument. */
 998         if (*scan || (scan > buf && (scan - 1) == wasdelim)) {
 999                 array[argc++] = scan;
1000         }
1001
1002         return argc;
1003 }
1004
1005 enum AST_LOCK_RESULT ast_lock_path(const char *path)
1006 {
1007         char *s;
1008         char *fs;
1009         int res;
1010         int fd;
1011         int lp = strlen(path);
1012         time_t start;
1013
1014         if (!(s = alloca(lp + 10)) || !(fs = alloca(lp + 20))) {
1015                 ast_log(LOG_WARNING, "Out of memory!\n");
1016                 return AST_LOCK_FAILURE;
1017         }
1018
1019         snprintf(fs, strlen(path) + 19, "%s/.lock-%08lx", path, ast_random());
1020         fd = open(fs, O_WRONLY | O_CREAT | O_EXCL, 0600);
1021         if (fd < 0) {
1022                 ast_log(LOG_ERROR, "Unable to create lock file '%s': %s\n", path, strerror(errno));
1023                 return AST_LOCK_PATH_NOT_FOUND;
1024         }
1025         close(fd);
1026
1027         snprintf(s, strlen(path) + 9, "%s/.lock", path);
1028         start = time(NULL);
1029         while (((res = link(fs, s)) < 0) && (errno == EEXIST) && (time(NULL) - start < 5))
1030                 usleep(1);
1031
1032         unlink(fs);
1033
1034         if (res) {
1035                 ast_log(LOG_WARNING, "Failed to lock path '%s': %s\n", path, strerror(errno));
1036                 return AST_LOCK_TIMEOUT;
1037         } else {
1038                 if (option_debug)
1039                         ast_log(LOG_DEBUG, "Locked path '%s'\n", path);
1040                 return AST_LOCK_SUCCESS;
1041         }
1042 }
1043
1044 int ast_unlock_path(const char *path)
1045 {
1046         char *s;
1047         int res;
1048
1049         if (!(s = alloca(strlen(path) + 10))) {
1050                 ast_log(LOG_WARNING, "Out of memory!\n");
1051                 return -1;
1052         }
1053
1054         snprintf(s, strlen(path) + 9, "%s/%s", path, ".lock");
1055
1056         if ((res = unlink(s)))
1057                 ast_log(LOG_ERROR, "Could not unlock path '%s': %s\n", path, strerror(errno));
1058         else {
1059                 if (option_debug)
1060                         ast_log(LOG_DEBUG, "Unlocked path '%s'\n", path);
1061         }
1062
1063         return res;
1064 }
1065
1066 int ast_record_review(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, const char *path)
1067 {
1068         int silencethreshold = 128;
1069         int maxsilence=0;
1070         int res = 0;
1071         int cmd = 0;
1072         int max_attempts = 3;
1073         int attempts = 0;
1074         int recorded = 0;
1075         int message_exists = 0;
1076         /* Note that urgent and private are for flagging messages as such in the future */
1077
1078         /* barf if no pointer passed to store duration in */
1079         if (duration == NULL) {
1080                 ast_log(LOG_WARNING, "Error ast_record_review called without duration pointer\n");
1081                 return -1;
1082         }
1083
1084         cmd = '3';       /* Want to start by recording */
1085
1086         while ((cmd >= 0) && (cmd != 't')) {
1087                 switch (cmd) {
1088                 case '1':
1089                         if (!message_exists) {
1090                                 /* In this case, 1 is to record a message */
1091                                 cmd = '3';
1092                                 break;
1093                         } else {
1094                                 ast_stream_and_wait(chan, "vm-msgsaved", chan->language, "");
1095                                 cmd = 't';
1096                                 return res;
1097                         }
1098                 case '2':
1099                         /* Review */
1100                         ast_verbose(VERBOSE_PREFIX_3 "Reviewing the recording\n");
1101                         cmd = ast_stream_and_wait(chan, recordfile, chan->language, AST_DIGIT_ANY);
1102                         break;
1103                 case '3':
1104                         message_exists = 0;
1105                         /* Record */
1106                         if (recorded == 1)
1107                                 ast_verbose(VERBOSE_PREFIX_3 "Re-recording\n");
1108                         else
1109                                 ast_verbose(VERBOSE_PREFIX_3 "Recording\n");
1110                         recorded = 1;
1111                         cmd = ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, silencethreshold, maxsilence, path);
1112                         if (cmd == -1) {
1113                         /* User has hung up, no options to give */
1114                                 return cmd;
1115                         }
1116                         if (cmd == '0') {
1117                                 break;
1118                         } else if (cmd == '*') {
1119                                 break;
1120                         }
1121                         else {
1122                                 /* If all is well, a message exists */
1123                                 message_exists = 1;
1124                                 cmd = 0;
1125                         }
1126                         break;
1127                 case '4':
1128                 case '5':
1129                 case '6':
1130                 case '7':
1131                 case '8':
1132                 case '9':
1133                 case '*':
1134                 case '#':
1135                         cmd = ast_play_and_wait(chan, "vm-sorry");
1136                         break;
1137                 default:
1138                         if (message_exists) {
1139                                 cmd = ast_play_and_wait(chan, "vm-review");
1140                         }
1141                         else {
1142                                 cmd = ast_play_and_wait(chan, "vm-torerecord");
1143                                 if (!cmd)
1144                                         cmd = ast_waitfordigit(chan, 600);
1145                         }
1146
1147                         if (!cmd)
1148                                 cmd = ast_waitfordigit(chan, 6000);
1149                         if (!cmd) {
1150                                 attempts++;
1151                         }
1152                         if (attempts > max_attempts) {
1153                                 cmd = 't';
1154                         }
1155                 }
1156         }
1157         if (cmd == 't')
1158                 cmd = 0;
1159         return cmd;
1160 }
1161
1162 #define RES_UPONE (1 << 16)
1163 #define RES_EXIT  (1 << 17)
1164 #define RES_REPEAT (1 << 18)
1165 #define RES_RESTART ((1 << 19) | RES_REPEAT)
1166
1167 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata);
1168
1169 static int ivr_dispatch(struct ast_channel *chan, struct ast_ivr_option *option, char *exten, void *cbdata)
1170 {
1171         int res;
1172         int (*ivr_func)(struct ast_channel *, void *);
1173         char *c;
1174         char *n;
1175
1176         switch(option->action) {
1177         case AST_ACTION_UPONE:
1178                 return RES_UPONE;
1179         case AST_ACTION_EXIT:
1180                 return RES_EXIT | (((unsigned long)(option->adata)) & 0xffff);
1181         case AST_ACTION_REPEAT:
1182                 return RES_REPEAT | (((unsigned long)(option->adata)) & 0xffff);
1183         case AST_ACTION_RESTART:
1184                 return RES_RESTART ;
1185         case AST_ACTION_NOOP:
1186                 return 0;
1187         case AST_ACTION_BACKGROUND:
1188                 res = ast_stream_and_wait(chan, (char *)option->adata, chan->language, AST_DIGIT_ANY);
1189                 if (res < 0) {
1190                         ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
1191                         res = 0;
1192                 }
1193                 return res;
1194         case AST_ACTION_PLAYBACK:
1195                 res = ast_stream_and_wait(chan, (char *)option->adata, chan->language, "");
1196                 if (res < 0) {
1197                         ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
1198                         res = 0;
1199                 }
1200                 return res;
1201         case AST_ACTION_MENU:
1202                 res = ast_ivr_menu_run_internal(chan, (struct ast_ivr_menu *)option->adata, cbdata);
1203                 /* Do not pass entry errors back up, treaat ast though ti was an "UPONE" */
1204                 if (res == -2)
1205                         res = 0;
1206                 return res;
1207         case AST_ACTION_WAITOPTION:
1208                 res = ast_waitfordigit(chan, 1000 * (chan->pbx ? chan->pbx->rtimeout : 10));
1209                 if (!res)
1210                         return 't';
1211                 return res;
1212         case AST_ACTION_CALLBACK:
1213                 ivr_func = option->adata;
1214                 res = ivr_func(chan, cbdata);
1215                 return res;
1216         case AST_ACTION_TRANSFER:
1217                 res = ast_parseable_goto(chan, option->adata);
1218                 return 0;
1219         case AST_ACTION_PLAYLIST:
1220         case AST_ACTION_BACKLIST:
1221                 res = 0;
1222                 c = ast_strdupa(option->adata);
1223                 while ((n = strsep(&c, ";"))) {
1224                         if ((res = ast_stream_and_wait(chan, n, chan->language,
1225                                         (option->action == AST_ACTION_BACKLIST) ? AST_DIGIT_ANY : "")))
1226                                 break;
1227                 }
1228                 ast_stopstream(chan);
1229                 return res;
1230         default:
1231                 ast_log(LOG_NOTICE, "Unknown dispatch function %d, ignoring!\n", option->action);
1232                 return 0;
1233         };
1234         return -1;
1235 }
1236
1237 static int option_exists(struct ast_ivr_menu *menu, char *option)
1238 {
1239         int x;
1240         for (x = 0; menu->options[x].option; x++)
1241                 if (!strcasecmp(menu->options[x].option, option))
1242                         return x;
1243         return -1;
1244 }
1245
1246 static int option_matchmore(struct ast_ivr_menu *menu, char *option)
1247 {
1248         int x;
1249         for (x = 0; menu->options[x].option; x++)
1250                 if ((!strncasecmp(menu->options[x].option, option, strlen(option))) &&
1251                                 (menu->options[x].option[strlen(option)]))
1252                         return x;
1253         return -1;
1254 }
1255
1256 static int read_newoption(struct ast_channel *chan, struct ast_ivr_menu *menu, char *exten, int maxexten)
1257 {
1258         int res=0;
1259         int ms;
1260         while (option_matchmore(menu, exten)) {
1261                 ms = chan->pbx ? chan->pbx->dtimeout : 5000;
1262                 if (strlen(exten) >= maxexten - 1)
1263                         break;
1264                 res = ast_waitfordigit(chan, ms);
1265                 if (res < 1)
1266                         break;
1267                 exten[strlen(exten) + 1] = '\0';
1268                 exten[strlen(exten)] = res;
1269         }
1270         return res > 0 ? 0 : res;
1271 }
1272
1273 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
1274 {
1275         /* Execute an IVR menu structure */
1276         int res=0;
1277         int pos = 0;
1278         int retries = 0;
1279         char exten[AST_MAX_EXTENSION] = "s";
1280         if (option_exists(menu, "s") < 0) {
1281                 strcpy(exten, "g");
1282                 if (option_exists(menu, "g") < 0) {
1283                         ast_log(LOG_WARNING, "No 's' nor 'g' extension in menu '%s'!\n", menu->title);
1284                         return -1;
1285                 }
1286         }
1287         while(!res) {
1288                 while(menu->options[pos].option) {
1289                         if (!strcasecmp(menu->options[pos].option, exten)) {
1290                                 res = ivr_dispatch(chan, menu->options + pos, exten, cbdata);
1291                                 if (option_debug)
1292                                         ast_log(LOG_DEBUG, "IVR Dispatch of '%s' (pos %d) yields %d\n", exten, pos, res);
1293                                 if (res < 0)
1294                                         break;
1295                                 else if (res & RES_UPONE)
1296                                         return 0;
1297                                 else if (res & RES_EXIT)
1298                                         return res;
1299                                 else if (res & RES_REPEAT) {
1300                                         int maxretries = res & 0xffff;
1301                                         if ((res & RES_RESTART) == RES_RESTART) {
1302                                                 retries = 0;
1303                                         } else
1304                                                 retries++;
1305                                         if (!maxretries)
1306                                                 maxretries = 3;
1307                                         if ((maxretries > 0) && (retries >= maxretries)) {
1308                                                 if (option_debug)
1309                                                         ast_log(LOG_DEBUG, "Max retries %d exceeded\n", maxretries);
1310                                                 return -2;
1311                                         } else {
1312                                                 if (option_exists(menu, "g") > -1)
1313                                                         strcpy(exten, "g");
1314                                                 else if (option_exists(menu, "s") > -1)
1315                                                         strcpy(exten, "s");
1316                                         }
1317                                         pos = 0;
1318                                         continue;
1319                                 } else if (res && strchr(AST_DIGIT_ANY, res)) {
1320                                         if (option_debug)
1321                                                 ast_log(LOG_DEBUG, "Got start of extension, %c\n", res);
1322                                         exten[1] = '\0';
1323                                         exten[0] = res;
1324                                         if ((res = read_newoption(chan, menu, exten, sizeof(exten))))
1325                                                 break;
1326                                         if (option_exists(menu, exten) < 0) {
1327                                                 if (option_exists(menu, "i")) {
1328                                                         if (option_debug)
1329                                                                 ast_log(LOG_DEBUG, "Invalid extension entered, going to 'i'!\n");
1330                                                         strcpy(exten, "i");
1331                                                         pos = 0;
1332                                                         continue;
1333                                                 } else {
1334                                                         if (option_debug)
1335                                                                 ast_log(LOG_DEBUG, "Aborting on invalid entry, with no 'i' option!\n");
1336                                                         res = -2;
1337                                                         break;
1338                                                 }
1339                                         } else {
1340                                                 if (option_debug)
1341                                                         ast_log(LOG_DEBUG, "New existing extension: %s\n", exten);
1342                                                 pos = 0;
1343                                                 continue;
1344                                         }
1345                                 }
1346                         }
1347                         pos++;
1348                 }
1349                 if (option_debug)
1350                         ast_log(LOG_DEBUG, "Stopping option '%s', res is %d\n", exten, res);
1351                 pos = 0;
1352                 if (!strcasecmp(exten, "s"))
1353                         strcpy(exten, "g");
1354                 else
1355                         break;
1356         }
1357         return res;
1358 }
1359
1360 int ast_ivr_menu_run(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
1361 {
1362         int res = ast_ivr_menu_run_internal(chan, menu, cbdata);
1363         /* Hide internal coding */
1364         return res > 0 ? 0 : res;
1365 }
1366
1367 char *ast_read_textfile(const char *filename)
1368 {
1369         int fd;
1370         char *output = NULL;
1371         struct stat filesize;
1372         int count = 0;
1373         int res;
1374         if (stat(filename, &filesize) == -1) {
1375                 ast_log(LOG_WARNING, "Error can't stat %s\n", filename);
1376                 return NULL;
1377         }
1378         count = filesize.st_size + 1;
1379         fd = open(filename, O_RDONLY);
1380         if (fd < 0) {
1381                 ast_log(LOG_WARNING, "Cannot open file '%s' for reading: %s\n", filename, strerror(errno));
1382                 return NULL;
1383         }
1384         if ((output = ast_malloc(count))) {
1385                 res = read(fd, output, count - 1);
1386                 if (res == count - 1) {
1387                         output[res] = '\0';
1388                 } else {
1389                         ast_log(LOG_WARNING, "Short read of %s (%d of %d): %s\n", filename, res, count - 1, strerror(errno));
1390                         free(output);
1391                         output = NULL;
1392                 }
1393         }
1394         close(fd);
1395         return output;
1396 }
1397
1398 void ast_app_options2str(const struct ast_app_option *options, struct ast_flags *flags, char *buf, size_t len)
1399 {
1400         unsigned int i, found = 0;
1401
1402         for (i = 32; i < 128 && found < len;i++) {
1403                 if (ast_test_flag(flags, options[i].flag)) {
1404                         buf[found++] = i;
1405                 }
1406         }
1407         buf[found] = '\0';
1408 }
1409
1410 int ast_app_parse_options(const struct ast_app_option *options, struct ast_flags *flags, char **args, char *optstr)
1411 {
1412         char *s;
1413         int curarg;
1414         unsigned int argloc;
1415         char *arg;
1416         int res = 0;
1417
1418         ast_clear_flag(flags, AST_FLAGS_ALL);
1419
1420         if (!optstr)
1421                 return 0;
1422
1423         s = optstr;
1424         while (*s) {
1425                 curarg = *s++ & 0x7f;   /* the array (in app.h) has 128 entries */
1426                 argloc = options[curarg].arg_index;
1427                 if (*s == '(') {
1428                         /* Has argument */
1429                         arg = ++s;
1430                         if ((s = strchr(s, ')'))) {
1431                                 if (argloc)
1432                                         args[argloc - 1] = arg;
1433                                 *s++ = '\0';
1434                         } else {
1435                                 ast_log(LOG_WARNING, "Missing closing parenthesis for argument '%c' in string '%s'\n", curarg, arg);
1436                                 res = -1;
1437                                 break;
1438                         }
1439                 } else if (argloc) {
1440                         args[argloc - 1] = "";
1441                 }
1442                 ast_set_flag(flags, options[curarg].flag);
1443         }
1444
1445         return res;
1446 }
1447