Sat Apr 12 07:12:15 2008

Asterisk developer's documentation


app.c

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00001 /*
00002  * Asterisk -- An open source telephony toolkit.
00003  *
00004  * Copyright (C) 1999 - 2005, Digium, Inc.
00005  *
00006  * Mark Spencer <markster@digium.com>
00007  *
00008  * See http://www.asterisk.org for more information about
00009  * the Asterisk project. Please do not directly contact
00010  * any of the maintainers of this project for assistance;
00011  * the project provides a web site, mailing lists and IRC
00012  * channels for your use.
00013  *
00014  * This program is free software, distributed under the terms of
00015  * the GNU General Public License Version 2. See the LICENSE file
00016  * at the top of the source tree.
00017  */
00018 
00019 /*! \file
00020  *
00021  * \brief Convenient Application Routines
00022  *
00023  * \author Mark Spencer <markster@digium.com> 
00024  */
00025 
00026 #include "asterisk.h"
00027 
00028 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 89709 $")
00029 
00030 #include <stdio.h>
00031 #include <stdlib.h>
00032 #include <string.h>
00033 #include <sys/time.h>
00034 #include <signal.h>
00035 #include <errno.h>
00036 #include <unistd.h>
00037 #include <dirent.h>
00038 #include <sys/types.h>
00039 #include <sys/stat.h>
00040 #include <regex.h>
00041 
00042 #include "asterisk/channel.h"
00043 #include "asterisk/pbx.h"
00044 #include "asterisk/file.h"
00045 #include "asterisk/app.h"
00046 #include "asterisk/dsp.h"
00047 #include "asterisk/logger.h"
00048 #include "asterisk/options.h"
00049 #include "asterisk/utils.h"
00050 #include "asterisk/lock.h"
00051 #include "asterisk/indications.h"
00052 #include "asterisk/linkedlists.h"
00053 
00054 #define MAX_OTHER_FORMATS 10
00055 
00056 static AST_LIST_HEAD_STATIC(groups, ast_group_info);
00057 
00058 /* !
00059 This function presents a dialtone and reads an extension into 'collect' 
00060 which must be a pointer to a **pre-initialized** array of char having a 
00061 size of 'size' suitable for writing to.  It will collect no more than the smaller 
00062 of 'maxlen' or 'size' minus the original strlen() of collect digits.
00063 \return 0 if extension does not exist, 1 if extension exists
00064 */
00065 int ast_app_dtget(struct ast_channel *chan, const char *context, char *collect, size_t size, int maxlen, int timeout) 
00066 {
00067    struct tone_zone_sound *ts;
00068    int res=0, x=0;
00069 
00070    if (maxlen > size)
00071       maxlen = size;
00072    
00073    if (!timeout && chan->pbx)
00074       timeout = chan->pbx->dtimeout;
00075    else if (!timeout)
00076       timeout = 5;
00077    
00078    ts = ast_get_indication_tone(chan->zone,"dial");
00079    if (ts && ts->data[0])
00080       res = ast_playtones_start(chan, 0, ts->data, 0);
00081    else 
00082       ast_log(LOG_NOTICE,"Huh....? no dial for indications?\n");
00083    
00084    for (x = strlen(collect); x < maxlen; ) {
00085       res = ast_waitfordigit(chan, timeout);
00086       if (!ast_ignore_pattern(context, collect))
00087          ast_playtones_stop(chan);
00088       if (res < 1)
00089          break;
00090       if (res == '#')
00091          break;
00092       collect[x++] = res;
00093       if (!ast_matchmore_extension(chan, context, collect, 1, chan->cid.cid_num))
00094          break;
00095    }
00096    if (res >= 0)
00097       res = ast_exists_extension(chan, context, collect, 1, chan->cid.cid_num) ? 1 : 0;
00098    return res;
00099 }
00100 
00101 /*! \param c The channel to read from
00102  *  \param prompt The file to stream to the channel
00103  *  \param s The string to read in to.  Must be at least the size of your length
00104  *  \param maxlen How many digits to read (maximum)
00105  *  \param timeout set timeout to 0 for "standard" timeouts. Set timeout to -1 for 
00106  *      "ludicrous time" (essentially never times out) */
00107 int ast_app_getdata(struct ast_channel *c, char *prompt, char *s, int maxlen, int timeout)
00108 {
00109    int res,to,fto;
00110    /* XXX Merge with full version? XXX */
00111    if (maxlen)
00112       s[0] = '\0';
00113    if (prompt) {
00114       res = ast_streamfile(c, prompt, c->language);
00115       if (res < 0)
00116          return res;
00117    }
00118    fto = c->pbx ? c->pbx->rtimeout * 1000 : 6000;
00119    to = c->pbx ? c->pbx->dtimeout * 1000 : 2000;
00120 
00121    if (timeout > 0) 
00122       fto = to = timeout;
00123    if (timeout < 0) 
00124       fto = to = 1000000000;
00125    res = ast_readstring(c, s, maxlen, to, fto, "#");
00126    return res;
00127 }
00128 
00129 
00130 int ast_app_getdata_full(struct ast_channel *c, char *prompt, char *s, int maxlen, int timeout, int audiofd, int ctrlfd)
00131 {
00132    int res, to, fto;
00133    if (prompt) {
00134       res = ast_streamfile(c, prompt, c->language);
00135       if (res < 0)
00136          return res;
00137    }
00138    fto = 6000;
00139    to = 2000;
00140    if (timeout > 0) 
00141       fto = to = timeout;
00142    if (timeout < 0) 
00143       fto = to = 1000000000;
00144    res = ast_readstring_full(c, s, maxlen, to, fto, "#", audiofd, ctrlfd);
00145    return res;
00146 }
00147 
00148 static int (*ast_has_voicemail_func)(const char *mailbox, const char *folder) = NULL;
00149 static int (*ast_inboxcount_func)(const char *mailbox, int *newmsgs, int *oldmsgs) = NULL;
00150 static int (*ast_messagecount_func)(const char *context, const char *mailbox, const char *folder) = NULL;
00151 
00152 void ast_install_vm_functions(int (*has_voicemail_func)(const char *mailbox, const char *folder),
00153                int (*inboxcount_func)(const char *mailbox, int *newmsgs, int *oldmsgs),
00154                int (*messagecount_func)(const char *context, const char *mailbox, const char *folder))
00155 {
00156    ast_has_voicemail_func = has_voicemail_func;
00157    ast_inboxcount_func = inboxcount_func;
00158    ast_messagecount_func = messagecount_func;
00159 }
00160 
00161 void ast_uninstall_vm_functions(void)
00162 {
00163    ast_has_voicemail_func = NULL;
00164    ast_inboxcount_func = NULL;
00165    ast_messagecount_func = NULL;
00166 }
00167 
00168 int ast_app_has_voicemail(const char *mailbox, const char *folder)
00169 {
00170    static int warned = 0;
00171    if (ast_has_voicemail_func)
00172       return ast_has_voicemail_func(mailbox, folder);
00173 
00174    if ((option_verbose > 2) && !warned) {
00175       ast_verbose(VERBOSE_PREFIX_3 "Message check requested for mailbox %s/folder %s but voicemail not loaded.\n", mailbox, folder ? folder : "INBOX");
00176       warned++;
00177    }
00178    return 0;
00179 }
00180 
00181 
00182 int ast_app_inboxcount(const char *mailbox, int *newmsgs, int *oldmsgs)
00183 {
00184    static int warned = 0;
00185    if (newmsgs)
00186       *newmsgs = 0;
00187    if (oldmsgs)
00188       *oldmsgs = 0;
00189    if (ast_inboxcount_func)
00190       return ast_inboxcount_func(mailbox, newmsgs, oldmsgs);
00191 
00192    if (!warned && (option_verbose > 2)) {
00193       warned++;
00194       ast_verbose(VERBOSE_PREFIX_3 "Message count requested for mailbox %s but voicemail not loaded.\n", mailbox);
00195    }
00196 
00197    return 0;
00198 }
00199 
00200 int ast_app_messagecount(const char *context, const char *mailbox, const char *folder)
00201 {
00202    static int warned = 0;
00203    if (ast_messagecount_func)
00204       return ast_messagecount_func(context, mailbox, folder);
00205 
00206    if (!warned && (option_verbose > 2)) {
00207       warned++;
00208       ast_verbose(VERBOSE_PREFIX_3 "Message count requested for mailbox %s@%s/%s but voicemail not loaded.\n", mailbox, context, folder);
00209    }
00210 
00211    return 0;
00212 }
00213 
00214 int ast_dtmf_stream(struct ast_channel *chan, struct ast_channel *peer, const char *digits, int between) 
00215 {
00216    const char *ptr;
00217    int res = 0;
00218 
00219    if (!between)
00220       between = 100;
00221 
00222    if (peer)
00223       res = ast_autoservice_start(peer);
00224 
00225    if (!res)
00226       res = ast_waitfor(chan, 100);
00227 
00228    /* ast_waitfor will return the number of remaining ms on success */
00229    if (res < 0)
00230       return res;
00231 
00232    for (ptr = digits; *ptr; ptr++) {
00233       if (*ptr == 'w') {
00234          /* 'w' -- wait half a second */
00235          if ((res = ast_safe_sleep(chan, 500)))
00236             break;
00237       } else if (strchr("0123456789*#abcdfABCDF", *ptr)) {
00238          /* Character represents valid DTMF */
00239          if (*ptr == 'f' || *ptr == 'F') {
00240             /* ignore return values if not supported by channel */
00241             ast_indicate(chan, AST_CONTROL_FLASH);
00242          } else
00243             ast_senddigit(chan, *ptr);
00244          /* pause between digits */
00245          if ((res = ast_safe_sleep(chan, between)))
00246             break;
00247       } else
00248          ast_log(LOG_WARNING, "Illegal DTMF character '%c' in string. (0-9*#aAbBcCdD allowed)\n",*ptr);
00249    }
00250 
00251    if (peer) {
00252       /* Stop autoservice on the peer channel, but don't overwrite any error condition 
00253          that has occurred previously while acting on the primary channel */
00254       if (ast_autoservice_stop(peer) && !res)
00255          res = -1;
00256    }
00257 
00258    return res;
00259 }
00260 
00261 struct linear_state {
00262    int fd;
00263    int autoclose;
00264    int allowoverride;
00265    int origwfmt;
00266 };
00267 
00268 static void linear_release(struct ast_channel *chan, void *params)
00269 {
00270    struct linear_state *ls = params;
00271    if (ls->origwfmt && ast_set_write_format(chan, ls->origwfmt)) {
00272       ast_log(LOG_WARNING, "Unable to restore channel '%s' to format '%d'\n", chan->name, ls->origwfmt);
00273    }
00274    if (ls->autoclose)
00275       close(ls->fd);
00276    free(params);
00277 }
00278 
00279 static int linear_generator(struct ast_channel *chan, void *data, int len, int samples)
00280 {
00281    struct ast_frame f;
00282    short buf[2048 + AST_FRIENDLY_OFFSET / 2];
00283    struct linear_state *ls = data;
00284    int res;
00285    len = samples * 2;
00286    if (len > sizeof(buf) - AST_FRIENDLY_OFFSET) {
00287       ast_log(LOG_WARNING, "Can't generate %d bytes of data!\n" ,len);
00288       len = sizeof(buf) - AST_FRIENDLY_OFFSET;
00289    }
00290    memset(&f, 0, sizeof(f));
00291    res = read(ls->fd, buf + AST_FRIENDLY_OFFSET/2, len);
00292    if (res > 0) {
00293       f.frametype = AST_FRAME_VOICE;
00294       f.subclass = AST_FORMAT_SLINEAR;
00295       f.data = buf + AST_FRIENDLY_OFFSET/2;
00296       f.datalen = res;
00297       f.samples = res / 2;
00298       f.offset = AST_FRIENDLY_OFFSET;
00299       ast_write(chan, &f);
00300       if (res == len)
00301          return 0;
00302    }
00303    return -1;
00304 }
00305 
00306 static void *linear_alloc(struct ast_channel *chan, void *params)
00307 {
00308    struct linear_state *ls;
00309    /* In this case, params is already malloc'd */
00310    if (params) {
00311       ls = params;
00312       if (ls->allowoverride)
00313          ast_set_flag(chan, AST_FLAG_WRITE_INT);
00314       else
00315          ast_clear_flag(chan, AST_FLAG_WRITE_INT);
00316       ls->origwfmt = chan->writeformat;
00317       if (ast_set_write_format(chan, AST_FORMAT_SLINEAR)) {
00318          ast_log(LOG_WARNING, "Unable to set '%s' to linear format (write)\n", chan->name);
00319          free(ls);
00320          ls = params = NULL;
00321       }
00322    }
00323    return params;
00324 }
00325 
00326 static struct ast_generator linearstream = 
00327 {
00328    alloc: linear_alloc,
00329    release: linear_release,
00330    generate: linear_generator,
00331 };
00332 
00333 int ast_linear_stream(struct ast_channel *chan, const char *filename, int fd, int allowoverride)
00334 {
00335    struct linear_state *lin;
00336    char tmpf[256];
00337    int res = -1;
00338    int autoclose = 0;
00339    if (fd < 0) {
00340       if (ast_strlen_zero(filename))
00341          return -1;
00342       autoclose = 1;
00343       if (filename[0] == '/') 
00344          ast_copy_string(tmpf, filename, sizeof(tmpf));
00345       else
00346          snprintf(tmpf, sizeof(tmpf), "%s/%s/%s", (char *)ast_config_AST_DATA_DIR, "sounds", filename);
00347       fd = open(tmpf, O_RDONLY);
00348       if (fd < 0){
00349          ast_log(LOG_WARNING, "Unable to open file '%s': %s\n", tmpf, strerror(errno));
00350          return -1;
00351       }
00352    }
00353    if ((lin = ast_calloc(1, sizeof(*lin)))) {
00354       lin->fd = fd;
00355       lin->allowoverride = allowoverride;
00356       lin->autoclose = autoclose;
00357       res = ast_activate_generator(chan, &linearstream, lin);
00358    }
00359    return res;
00360 }
00361 
00362 int ast_control_streamfile(struct ast_channel *chan, const char *file,
00363             const char *fwd, const char *rev,
00364             const char *stop, const char *pause,
00365             const char *restart, int skipms) 
00366 {
00367    char *breaks = NULL;
00368    char *end = NULL;
00369    int blen = 2;
00370    int res;
00371    long pause_restart_point = 0;
00372 
00373    if (stop)
00374       blen += strlen(stop);
00375    if (pause)
00376       blen += strlen(pause);
00377    if (restart)
00378       blen += strlen(restart);
00379 
00380    if (blen > 2) {
00381       breaks = alloca(blen + 1);
00382       breaks[0] = '\0';
00383       if (stop)
00384          strcat(breaks, stop);
00385       if (pause)
00386          strcat(breaks, pause);
00387       if (restart)
00388          strcat(breaks, restart);
00389    }
00390    if (chan->_state != AST_STATE_UP)
00391       res = ast_answer(chan);
00392 
00393    if (file) {
00394       if ((end = strchr(file,':'))) {
00395          if (!strcasecmp(end, ":end")) {
00396             *end = '\0';
00397             end++;
00398          }
00399       }
00400    }
00401 
00402    for (;;) {
00403       ast_stopstream(chan);
00404       res = ast_streamfile(chan, file, chan->language);
00405       if (!res) {
00406          if (pause_restart_point) {
00407             ast_seekstream(chan->stream, pause_restart_point, SEEK_SET);
00408             pause_restart_point = 0;
00409          }
00410          else if (end) {
00411             ast_seekstream(chan->stream, 0, SEEK_END);
00412             end = NULL;
00413          };
00414          res = ast_waitstream_fr(chan, breaks, fwd, rev, skipms);
00415       }
00416 
00417       if (res < 1)
00418          break;
00419 
00420       /* We go at next loop if we got the restart char */
00421       if (restart && strchr(restart, res)) {
00422          if (option_debug)
00423             ast_log(LOG_DEBUG, "we'll restart the stream here at next loop\n");
00424          pause_restart_point = 0;
00425          continue;
00426       }
00427 
00428       if (pause && strchr(pause, res)) {
00429          pause_restart_point = ast_tellstream(chan->stream);
00430          for (;;) {
00431             ast_stopstream(chan);
00432             res = ast_waitfordigit(chan, 1000);
00433             if (!res)
00434                continue;
00435             else if (res == -1 || strchr(pause, res) || (stop && strchr(stop, res)))
00436                break;
00437          }
00438          if (res == *pause) {
00439             res = 0;
00440             continue;
00441          }
00442       }
00443 
00444       if (res == -1)
00445          break;
00446 
00447       /* if we get one of our stop chars, return it to the calling function */
00448       if (stop && strchr(stop, res))
00449          break;
00450    }
00451 
00452    /* If we are returning a digit cast it as char */
00453    if (res > 0 || chan->stream)
00454       res = (char)res;
00455 
00456    ast_stopstream(chan);
00457 
00458    return res;
00459 }
00460 
00461 int ast_play_and_wait(struct ast_channel *chan, const char *fn)
00462 {
00463    int d;
00464    d = ast_streamfile(chan, fn, chan->language);
00465    if (d)
00466       return d;
00467    d = ast_waitstream(chan, AST_DIGIT_ANY);
00468    ast_stopstream(chan);
00469    return d;
00470 }
00471 
00472 static int global_silence_threshold = 128;
00473 static int global_maxsilence = 0;
00474 
00475 /*! Optionally play a sound file or a beep, then record audio and video from the channel.
00476  * @param chan Channel to playback to/record from.
00477  * @param playfile Filename of sound to play before recording begins.
00478  * @param recordfile Filename to record to.
00479  * @param maxtime Maximum length of recording (in milliseconds).
00480  * @param fmt Format(s) to record message in. Multiple formats may be specified by separating them with a '|'.
00481  * @param duration Where to store actual length of the recorded message (in milliseconds).
00482  * @param beep Whether to play a beep before starting to record.
00483  * @param silencethreshold 
00484  * @param maxsilence Length of silence that will end a recording (in milliseconds).
00485  * @param path Optional filesystem path to unlock.
00486  * @param prepend If true, prepend the recorded audio to an existing file.
00487  * @param acceptdtmf DTMF digits that will end the recording.
00488  * @param canceldtmf DTMF digits that will cancel the recording.
00489  */
00490 
00491 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)
00492 {
00493    int d = 0;
00494    char *fmts;
00495    char comment[256];
00496    int x, fmtcnt = 1, res = -1, outmsg = 0;
00497    struct ast_filestream *others[MAX_OTHER_FORMATS];
00498    char *sfmt[MAX_OTHER_FORMATS];
00499    char *stringp = NULL;
00500    time_t start, end;
00501    struct ast_dsp *sildet = NULL;   /* silence detector dsp */
00502    int totalsilence = 0;
00503    int rfmt = 0;
00504    struct ast_silence_generator *silgen = NULL;
00505    char prependfile[80];
00506 
00507    if (silencethreshold < 0)
00508       silencethreshold = global_silence_threshold;
00509 
00510    if (maxsilence < 0)
00511       maxsilence = global_maxsilence;
00512 
00513    /* barf if no pointer passed to store duration in */
00514    if (duration == NULL) {
00515       ast_log(LOG_WARNING, "Error play_and_record called without duration pointer\n");
00516       return -1;
00517    }
00518 
00519    if (option_debug)
00520       ast_log(LOG_DEBUG,"play_and_record: %s, %s, '%s'\n", playfile ? playfile : "<None>", recordfile, fmt);
00521    snprintf(comment, sizeof(comment), "Playing %s, Recording to: %s on %s\n", playfile ? playfile : "<None>", recordfile, chan->name);
00522 
00523    if (playfile || beep) {
00524       if (!beep)
00525          d = ast_play_and_wait(chan, playfile);
00526       if (d > -1)
00527          d = ast_stream_and_wait(chan, "beep", chan->language, "");
00528       if (d < 0)
00529          return -1;
00530    }
00531 
00532    if (prepend) {
00533       ast_copy_string(prependfile, recordfile, sizeof(prependfile)); 
00534       strncat(prependfile, "-prepend", sizeof(prependfile) - strlen(prependfile) - 1);
00535    }
00536 
00537    fmts = ast_strdupa(fmt);
00538 
00539    stringp = fmts;
00540    strsep(&stringp, "|");
00541    if (option_debug)
00542       ast_log(LOG_DEBUG, "Recording Formats: sfmts=%s\n", fmts);
00543    sfmt[0] = ast_strdupa(fmts);
00544 
00545    while ((fmt = strsep(&stringp, "|"))) {
00546       if (fmtcnt > MAX_OTHER_FORMATS - 1) {
00547          ast_log(LOG_WARNING, "Please increase MAX_OTHER_FORMATS in app.c\n");
00548          break;
00549       }
00550       sfmt[fmtcnt++] = ast_strdupa(fmt);
00551    }
00552 
00553    end = start = time(NULL);  /* pre-initialize end to be same as start in case we never get into loop */
00554    for (x = 0; x < fmtcnt; x++) {
00555       others[x] = ast_writefile(prepend ? prependfile : recordfile, sfmt[x], comment, O_TRUNC, 0, 0777);
00556       if (option_verbose > 2)
00557          ast_verbose(VERBOSE_PREFIX_3 "x=%d, open writing:  %s format: %s, %p\n", x, prepend ? prependfile : recordfile, sfmt[x], others[x]);
00558 
00559       if (!others[x])
00560          break;
00561    }
00562 
00563    if (path)
00564       ast_unlock_path(path);
00565 
00566    if (maxsilence > 0) {
00567       sildet = ast_dsp_new(); /* Create the silence detector */
00568       if (!sildet) {
00569          ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
00570          return -1;
00571       }
00572       ast_dsp_set_threshold(sildet, silencethreshold);
00573       rfmt = chan->readformat;
00574       res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
00575       if (res < 0) {
00576          ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
00577          ast_dsp_free(sildet);
00578          return -1;
00579       }
00580    }
00581 
00582    if (!prepend) {
00583       /* Request a video update */
00584       ast_indicate(chan, AST_CONTROL_VIDUPDATE);
00585 
00586       if (ast_opt_transmit_silence)
00587          silgen = ast_channel_start_silence_generator(chan);
00588    }
00589 
00590    if (x == fmtcnt) {
00591       /* Loop forever, writing the packets we read to the writer(s), until
00592          we read a digit or get a hangup */
00593       struct ast_frame *f;
00594       for (;;) {
00595          res = ast_waitfor(chan, 2000);
00596          if (!res) {
00597             if (option_debug)
00598                ast_log(LOG_DEBUG, "One waitfor failed, trying another\n");
00599             /* Try one more time in case of masq */
00600             res = ast_waitfor(chan, 2000);
00601             if (!res) {
00602                ast_log(LOG_WARNING, "No audio available on %s??\n", chan->name);
00603                res = -1;
00604             }
00605          }
00606 
00607          if (res < 0) {
00608             f = NULL;
00609             break;
00610          }
00611          f = ast_read(chan);
00612          if (!f)
00613             break;
00614          if (f->frametype == AST_FRAME_VOICE) {
00615             /* write each format */
00616             for (x = 0; x < fmtcnt; x++) {
00617                if (prepend && !others[x])
00618                   break;
00619                res = ast_writestream(others[x], f);
00620             }
00621 
00622             /* Silence Detection */
00623             if (maxsilence > 0) {
00624                int dspsilence = 0;
00625                ast_dsp_silence(sildet, f, &dspsilence);
00626                if (dspsilence)
00627                   totalsilence = dspsilence;
00628                else
00629                   totalsilence = 0;
00630 
00631                if (totalsilence > maxsilence) {
00632                   /* Ended happily with silence */
00633                   if (option_verbose > 2)
00634                      ast_verbose( VERBOSE_PREFIX_3 "Recording automatically stopped after a silence of %d seconds\n", totalsilence/1000);
00635                   res = 'S';
00636                   outmsg = 2;
00637                   break;
00638                }
00639             }
00640             /* Exit on any error */
00641             if (res) {
00642                ast_log(LOG_WARNING, "Error writing frame\n");
00643                break;
00644             }
00645          } else if (f->frametype == AST_FRAME_VIDEO) {
00646             /* Write only once */
00647             ast_writestream(others[0], f);
00648          } else if (f->frametype == AST_FRAME_DTMF) {
00649             if (prepend) {
00650             /* stop recording with any digit */
00651                if (option_verbose > 2) 
00652                   ast_verbose(VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
00653                res = 't';
00654                outmsg = 2;
00655                break;
00656             }
00657             if (strchr(acceptdtmf, f->subclass)) {
00658                if (option_verbose > 2)
00659                   ast_verbose(VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
00660                res = f->subclass;
00661                outmsg = 2;
00662                break;
00663             }
00664             if (strchr(canceldtmf, f->subclass)) {
00665                if (option_verbose > 2)
00666                   ast_verbose(VERBOSE_PREFIX_3 "User cancelled message by pressing %c\n", f->subclass);
00667                res = f->subclass;
00668                outmsg = 0;
00669                break;
00670             }
00671          }
00672          if (maxtime) {
00673             end = time(NULL);
00674             if (maxtime < (end - start)) {
00675                if (option_verbose > 2)
00676                   ast_verbose(VERBOSE_PREFIX_3 "Took too long, cutting it short...\n");
00677                res = 't';
00678                outmsg = 2;
00679                break;
00680             }
00681          }
00682          ast_frfree(f);
00683       }
00684       if (!f) {
00685          if (option_verbose > 2)
00686             ast_verbose(VERBOSE_PREFIX_3 "User hung up\n");
00687          res = -1;
00688          outmsg = 1;
00689       } else {
00690          ast_frfree(f);
00691       }
00692    } else {
00693       ast_log(LOG_WARNING, "Error creating writestream '%s', format '%s'\n", recordfile, sfmt[x]);
00694    }
00695 
00696    if (!prepend) {
00697       if (silgen)
00698          ast_channel_stop_silence_generator(chan, silgen);
00699    }
00700 
00701    /*!\note
00702     * Instead of asking how much time passed (end - start), calculate the number
00703     * of seconds of audio which actually went into the file.  This fixes a
00704     * problem where audio is stopped up on the network and never gets to us.
00705     *
00706     * Note that we still want to use the number of seconds passed for the max
00707     * message, otherwise we could get a situation where this stream is never
00708     * closed (which would create a resource leak).
00709     */
00710    *duration = ast_tellstream(others[0]) / 8000;
00711 
00712    if (!prepend) {
00713       for (x = 0; x < fmtcnt; x++) {
00714          if (!others[x])
00715             break;
00716          /*!\note
00717           * If we ended with silence, trim all but the first 200ms of silence
00718           * off the recording.  However, if we ended with '#', we don't want
00719           * to trim ANY part of the recording.
00720           */
00721          if (res > 0 && totalsilence)
00722             ast_stream_rewind(others[x], totalsilence - 200);
00723          ast_truncstream(others[x]);
00724          ast_closestream(others[x]);
00725       }
00726    }
00727 
00728    if (prepend && outmsg) {
00729       struct ast_filestream *realfiles[MAX_OTHER_FORMATS];
00730       struct ast_frame *fr;
00731 
00732       for (x = 0; x < fmtcnt; x++) {
00733          snprintf(comment, sizeof(comment), "Opening the real file %s.%s\n", recordfile, sfmt[x]);
00734          realfiles[x] = ast_readfile(recordfile, sfmt[x], comment, O_RDONLY, 0, 0);
00735          if (!others[x] || !realfiles[x])
00736             break;
00737          /*!\note Same logic as above. */
00738          if (totalsilence)
00739             ast_stream_rewind(others[x], totalsilence - 200);
00740          ast_truncstream(others[x]);
00741          /* add the original file too */
00742          while ((fr = ast_readframe(realfiles[x]))) {
00743             ast_writestream(others[x], fr);
00744             ast_frfree(fr);
00745          }
00746          ast_closestream(others[x]);
00747          ast_closestream(realfiles[x]);
00748          ast_filerename(prependfile, recordfile, sfmt[x]);
00749          if (option_verbose > 3)
00750             ast_verbose(VERBOSE_PREFIX_4 "Recording Format: sfmts=%s, prependfile %s, recordfile %s\n", sfmt[x], prependfile, recordfile);
00751          ast_filedelete(prependfile, sfmt[x]);
00752       }
00753    }
00754    if (rfmt && ast_set_read_format(chan, rfmt)) {
00755       ast_log(LOG_WARNING, "Unable to restore format %s to channel '%s'\n", ast_getformatname(rfmt), chan->name);
00756    }
00757    if (outmsg == 2) {
00758       ast_stream_and_wait(chan, "auth-thankyou", chan->language, "");
00759    }
00760    if (sildet)
00761       ast_dsp_free(sildet);
00762    return res;
00763 }
00764 
00765 static char default_acceptdtmf[] = "#";
00766 static char default_canceldtmf[] = "";
00767 
00768 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)
00769 {
00770    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));
00771 }
00772 
00773 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)
00774 {
00775    return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, 0, silencethreshold, maxsilence, path, 0, default_acceptdtmf, default_canceldtmf);
00776 }
00777 
00778 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)
00779 {
00780    return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, beep, silencethreshold, maxsilence, NULL, 1, default_acceptdtmf, default_canceldtmf);
00781 }
00782 
00783 /* Channel group core functions */
00784 
00785 int ast_app_group_split_group(const char *data, char *group, int group_max, char *category, int category_max)
00786 {
00787    int res=0;
00788    char tmp[256];
00789    char *grp=NULL, *cat=NULL;
00790 
00791    if (!ast_strlen_zero(data)) {
00792       ast_copy_string(tmp, data, sizeof(tmp));
00793       grp = tmp;
00794       cat = strchr(tmp, '@');
00795       if (cat) {
00796          *cat = '\0';
00797          cat++;
00798       }
00799    }
00800 
00801    if (!ast_strlen_zero(grp))
00802       ast_copy_string(group, grp, group_max);
00803    else
00804       *group = '\0';
00805 
00806    if (!ast_strlen_zero(cat))
00807       ast_copy_string(category, cat, category_max);
00808 
00809    return res;
00810 }
00811 
00812 int ast_app_group_set_channel(struct ast_channel *chan, const char *data)
00813 {
00814    int res = 0;
00815    char group[80] = "", category[80] = "";
00816    struct ast_group_info *gi = NULL;
00817    size_t len = 0;
00818    
00819    if (ast_app_group_split_group(data, group, sizeof(group), category, sizeof(category)))
00820       return -1;
00821    
00822    /* Calculate memory we will need if this is new */
00823    len = sizeof(*gi) + strlen(group) + 1;
00824    if (!ast_strlen_zero(category))
00825       len += strlen(category) + 1;
00826    
00827    AST_LIST_LOCK(&groups);
00828    AST_LIST_TRAVERSE_SAFE_BEGIN(&groups, gi, list) {
00829       if ((gi->chan == chan) && ((ast_strlen_zero(category) && ast_strlen_zero(gi->category)) || (!ast_strlen_zero(gi->category) && !strcasecmp(gi->category, category)))) {
00830          AST_LIST_REMOVE_CURRENT(&groups, list);
00831          free(gi);
00832          break;
00833       }
00834    }
00835    AST_LIST_TRAVERSE_SAFE_END
00836 
00837    if (ast_strlen_zero(group)) {
00838       /* Enable unsetting the group */
00839    } else if ((gi = calloc(1, len))) {
00840       gi->chan = chan;
00841       gi->group = (char *) gi + sizeof(*gi);
00842       strcpy(gi->group, group);
00843       if (!ast_strlen_zero(category)) {
00844          gi->category = (char *) gi + sizeof(*gi) + strlen(group) + 1;
00845          strcpy(gi->category, category);
00846       }
00847       AST_LIST_INSERT_TAIL(&groups, gi, list);
00848    } else {
00849       res = -1;
00850    }
00851    
00852    AST_LIST_UNLOCK(&groups);
00853    
00854    return res;
00855 }
00856 
00857 int ast_app_group_get_count(const char *group, const char *category)
00858 {
00859    struct ast_group_info *gi = NULL;
00860    int count = 0;
00861 
00862    if (ast_strlen_zero(group))
00863       return 0;
00864    
00865    AST_LIST_LOCK(&groups);
00866    AST_LIST_TRAVERSE(&groups, gi, list) {
00867       if (!strcasecmp(gi->group, group) && (ast_strlen_zero(category) || (!ast_strlen_zero(gi->category) && !strcasecmp(gi->category, category))))
00868          count++;
00869    }
00870    AST_LIST_UNLOCK(&groups);
00871 
00872    return count;
00873 }
00874 
00875 int ast_app_group_match_get_count(const char *groupmatch, const char *category)
00876 {
00877    struct ast_group_info *gi = NULL;
00878    regex_t regexbuf;
00879    int count = 0;
00880 
00881    if (ast_strlen_zero(groupmatch))
00882       return 0;
00883 
00884    /* if regex compilation fails, return zero matches */
00885    if (regcomp(&regexbuf, groupmatch, REG_EXTENDED | REG_NOSUB))
00886       return 0;
00887 
00888    AST_LIST_LOCK(&groups);
00889    AST_LIST_TRAVERSE(&groups, gi, list) {
00890       if (!regexec(&regexbuf, gi->group, 0, NULL, 0) && (ast_strlen_zero(category) || (!ast_strlen_zero(gi->category) && !strcasecmp(gi->category, category))))
00891          count++;
00892    }
00893    AST_LIST_UNLOCK(&groups);
00894 
00895    regfree(&regexbuf);
00896 
00897    return count;
00898 }
00899 
00900 int ast_app_group_update(struct ast_channel *old, struct ast_channel *new)
00901 {
00902    struct ast_group_info *gi = NULL;
00903 
00904    AST_LIST_LOCK(&groups);
00905    AST_LIST_TRAVERSE(&groups, gi, list) {
00906       if (gi->chan == old)
00907          gi->chan = new;
00908    }
00909    AST_LIST_UNLOCK(&groups);
00910 
00911    return 0;
00912 }
00913 
00914 int ast_app_group_discard(struct ast_channel *chan)
00915 {
00916    struct ast_group_info *gi = NULL;
00917    
00918    AST_LIST_LOCK(&groups);
00919    AST_LIST_TRAVERSE_SAFE_BEGIN(&groups, gi, list) {
00920       if (gi->chan == chan) {
00921          AST_LIST_REMOVE_CURRENT(&groups, list);
00922          free(gi);
00923       }
00924    }
00925         AST_LIST_TRAVERSE_SAFE_END
00926    AST_LIST_UNLOCK(&groups);
00927    
00928    return 0;
00929 }
00930 
00931 int ast_app_group_list_lock(void)
00932 {
00933    return AST_LIST_LOCK(&groups);
00934 }
00935 
00936 struct ast_group_info *ast_app_group_list_head(void)
00937 {
00938    return AST_LIST_FIRST(&groups);
00939 }
00940 
00941 int ast_app_group_list_unlock(void)
00942 {
00943    return AST_LIST_UNLOCK(&groups);
00944 }
00945 
00946 unsigned int ast_app_separate_args(char *buf, char delim, char **array, int arraylen)
00947 {
00948    int argc;
00949    char *scan;
00950    int paren = 0, quote = 0;
00951 
00952    if (!buf || !array || !arraylen)
00953       return 0;
00954 
00955    memset(array, 0, arraylen * sizeof(*array));
00956 
00957    scan = buf;
00958 
00959    for (argc = 0; *scan && (argc < arraylen - 1); argc++) {
00960       array[argc] = scan;
00961       for (; *scan; scan++) {
00962          if (*scan == '(')
00963             paren++;
00964          else if (*scan == ')') {
00965             if (paren)
00966                paren--;
00967          } else if (*scan == '"' && delim != '"') {
00968             quote = quote ? 0 : 1;
00969             /* Remove quote character from argument */
00970             memmove(scan, scan + 1, strlen(scan));
00971             scan--;
00972          } else if (*scan == '\\') {
00973             /* Literal character, don't parse */
00974             memmove(scan, scan + 1, strlen(scan));
00975          } else if ((*scan == delim) && !paren && !quote) {
00976             *scan++ = '\0';
00977             break;
00978          }
00979       }
00980    }
00981 
00982    if (*scan)
00983       array[argc++] = scan;
00984 
00985    return argc;
00986 }
00987 
00988 enum AST_LOCK_RESULT ast_lock_path(const char *path)
00989 {
00990    char *s;
00991    char *fs;
00992    int res;
00993    int fd;
00994    int lp = strlen(path);
00995    time_t start;
00996 
00997    if (!(s = alloca(lp + 10)) || !(fs = alloca(lp + 20))) {
00998       ast_log(LOG_WARNING, "Out of memory!\n");
00999       return AST_LOCK_FAILURE;
01000    }
01001 
01002    snprintf(fs, strlen(path) + 19, "%s/.lock-%08lx", path, ast_random());
01003    fd = open(fs, O_WRONLY | O_CREAT | O_EXCL, 0600);
01004    if (fd < 0) {
01005       ast_log(LOG_ERROR, "Unable to create lock file '%s': %s\n", path, strerror(errno));
01006       return AST_LOCK_PATH_NOT_FOUND;
01007    }
01008    close(fd);
01009 
01010    snprintf(s, strlen(path) + 9, "%s/.lock", path);
01011    start = time(NULL);
01012    while (((res = link(fs, s)) < 0) && (errno == EEXIST) && (time(NULL) - start < 5))
01013       usleep(1);
01014 
01015    unlink(fs);
01016 
01017    if (res) {
01018       ast_log(LOG_WARNING, "Failed to lock path '%s': %s\n", path, strerror(errno));
01019       return AST_LOCK_TIMEOUT;
01020    } else {
01021       if (option_debug)
01022          ast_log(LOG_DEBUG, "Locked path '%s'\n", path);
01023       return AST_LOCK_SUCCESS;
01024    }
01025 }
01026 
01027 int ast_unlock_path(const char *path)
01028 {
01029    char *s;
01030    int res;
01031 
01032    if (!(s = alloca(strlen(path) + 10))) {
01033       ast_log(LOG_WARNING, "Out of memory!\n");
01034       return -1;
01035    }
01036 
01037    snprintf(s, strlen(path) + 9, "%s/%s", path, ".lock");
01038 
01039    if ((res = unlink(s)))
01040       ast_log(LOG_ERROR, "Could not unlock path '%s': %s\n", path, strerror(errno));
01041    else {
01042       if (option_debug)
01043          ast_log(LOG_DEBUG, "Unlocked path '%s'\n", path);
01044    }
01045 
01046    return res;
01047 }
01048 
01049 int ast_record_review(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, const char *path) 
01050 {
01051    int silencethreshold = 128; 
01052    int maxsilence=0;
01053    int res = 0;
01054    int cmd = 0;
01055    int max_attempts = 3;
01056    int attempts = 0;
01057    int recorded = 0;
01058    int message_exists = 0;
01059    /* Note that urgent and private are for flagging messages as such in the future */
01060 
01061    /* barf if no pointer passed to store duration in */
01062    if (duration == NULL) {
01063       ast_log(LOG_WARNING, "Error ast_record_review called without duration pointer\n");
01064       return -1;
01065    }
01066 
01067    cmd = '3';   /* Want to start by recording */
01068 
01069    while ((cmd >= 0) && (cmd != 't')) {
01070       switch (cmd) {
01071       case '1':
01072          if (!message_exists) {
01073             /* In this case, 1 is to record a message */
01074             cmd = '3';
01075             break;
01076          } else {
01077             ast_stream_and_wait(chan, "vm-msgsaved", chan->language, "");
01078             cmd = 't';
01079             return res;
01080          }
01081       case '2':
01082          /* Review */
01083          ast_verbose(VERBOSE_PREFIX_3 "Reviewing the recording\n");
01084          cmd = ast_stream_and_wait(chan, recordfile, chan->language, AST_DIGIT_ANY);
01085          break;
01086       case '3':
01087          message_exists = 0;
01088          /* Record */
01089          if (recorded == 1)
01090             ast_verbose(VERBOSE_PREFIX_3 "Re-recording\n");
01091          else  
01092             ast_verbose(VERBOSE_PREFIX_3 "Recording\n");
01093          recorded = 1;
01094          cmd = ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, silencethreshold, maxsilence, path);
01095          if (cmd == -1) {
01096          /* User has hung up, no options to give */
01097             return cmd;
01098          }
01099          if (cmd == '0') {
01100             break;
01101          } else if (cmd == '*') {
01102             break;
01103          } 
01104          else {
01105             /* If all is well, a message exists */
01106             message_exists = 1;
01107             cmd = 0;
01108          }
01109          break;
01110       case '4':
01111       case '5':
01112       case '6':
01113       case '7':
01114       case '8':
01115       case '9':
01116       case '*':
01117       case '#':
01118          cmd = ast_play_and_wait(chan, "vm-sorry");
01119          break;
01120       default:
01121          if (message_exists) {
01122             cmd = ast_play_and_wait(chan, "vm-review");
01123          }
01124          else {
01125             cmd = ast_play_and_wait(chan, "vm-torerecord");
01126             if (!cmd)
01127                cmd = ast_waitfordigit(chan, 600);
01128          }
01129          
01130          if (!cmd)
01131             cmd = ast_waitfordigit(chan, 6000);
01132          if (!cmd) {
01133             attempts++;
01134          }
01135          if (attempts > max_attempts) {
01136             cmd = 't';
01137          }
01138       }
01139    }
01140    if (cmd == 't')
01141       cmd = 0;
01142    return cmd;
01143 }
01144 
01145 #define RES_UPONE (1 << 16)
01146 #define RES_EXIT  (1 << 17)
01147 #define RES_REPEAT (1 << 18)
01148 #define RES_RESTART ((1 << 19) | RES_REPEAT)
01149 
01150 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata);
01151 
01152 static int ivr_dispatch(struct ast_channel *chan, struct ast_ivr_option *option, char *exten, void *cbdata)
01153 {
01154    int res;
01155    int (*ivr_func)(struct ast_channel *, void *);
01156    char *c;
01157    char *n;
01158    
01159    switch(option->action) {
01160    case AST_ACTION_UPONE:
01161       return RES_UPONE;
01162    case AST_ACTION_EXIT:
01163       return RES_EXIT | (((unsigned long)(option->adata)) & 0xffff);
01164    case AST_ACTION_REPEAT:
01165       return RES_REPEAT | (((unsigned long)(option->adata)) & 0xffff);
01166    case AST_ACTION_RESTART:
01167       return RES_RESTART ;
01168    case AST_ACTION_NOOP:
01169       return 0;
01170    case AST_ACTION_BACKGROUND:
01171       res = ast_stream_and_wait(chan, (char *)option->adata, chan->language, AST_DIGIT_ANY);
01172       if (res < 0) {
01173          ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
01174          res = 0;
01175       }
01176       return res;
01177    case AST_ACTION_PLAYBACK:
01178       res = ast_stream_and_wait(chan, (char *)option->adata, chan->language, "");
01179       if (res < 0) {
01180          ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
01181          res = 0;
01182       }
01183       return res;
01184    case AST_ACTION_MENU:
01185       res = ast_ivr_menu_run_internal(chan, (struct ast_ivr_menu *)option->adata, cbdata);
01186       /* Do not pass entry errors back up, treaat ast though ti was an "UPONE" */
01187       if (res == -2)
01188          res = 0;
01189       return res;
01190    case AST_ACTION_WAITOPTION:
01191       res = ast_waitfordigit(chan, 1000 * (chan->pbx ? chan->pbx->rtimeout : 10));
01192       if (!res)
01193          return 't';
01194       return res;
01195    case AST_ACTION_CALLBACK:
01196       ivr_func = option->adata;
01197       res = ivr_func(chan, cbdata);
01198       return res;
01199    case AST_ACTION_TRANSFER:
01200       res = ast_parseable_goto(chan, option->adata);
01201       return 0;
01202    case AST_ACTION_PLAYLIST:
01203    case AST_ACTION_BACKLIST:
01204       res = 0;
01205       c = ast_strdupa(option->adata);
01206       while ((n = strsep(&c, ";"))) {
01207          if ((res = ast_stream_and_wait(chan, n, chan->language,
01208                (option->action == AST_ACTION_BACKLIST) ? AST_DIGIT_ANY : "")))
01209             break;
01210       }
01211       ast_stopstream(chan);
01212       return res;
01213    default:
01214       ast_log(LOG_NOTICE, "Unknown dispatch function %d, ignoring!\n", option->action);
01215       return 0;
01216    };
01217    return -1;
01218 }
01219 
01220 static int option_exists(struct ast_ivr_menu *menu, char *option)
01221 {
01222    int x;
01223    for (x = 0; menu->options[x].option; x++)
01224       if (!strcasecmp(menu->options[x].option, option))
01225          return x;
01226    return -1;
01227 }
01228 
01229 static int option_matchmore(struct ast_ivr_menu *menu, char *option)
01230 {
01231    int x;
01232    for (x = 0; menu->options[x].option; x++)
01233       if ((!strncasecmp(menu->options[x].option, option, strlen(option))) && 
01234             (menu->options[x].option[strlen(option)]))
01235          return x;
01236    return -1;
01237 }
01238 
01239 static int read_newoption(struct ast_channel *chan, struct ast_ivr_menu *menu, char *exten, int maxexten)
01240 {
01241    int res=0;
01242    int ms;
01243    while (option_matchmore(menu, exten)) {
01244       ms = chan->pbx ? chan->pbx->dtimeout : 5000;
01245       if (strlen(exten) >= maxexten - 1) 
01246          break;
01247       res = ast_waitfordigit(chan, ms);
01248       if (res < 1)
01249          break;
01250       exten[strlen(exten) + 1] = '\0';
01251       exten[strlen(exten)] = res;
01252    }
01253    return res > 0 ? 0 : res;
01254 }
01255 
01256 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
01257 {
01258    /* Execute an IVR menu structure */
01259    int res=0;
01260    int pos = 0;
01261    int retries = 0;
01262    char exten[AST_MAX_EXTENSION] = "s";
01263    if (option_exists(menu, "s") < 0) {
01264       strcpy(exten, "g");
01265       if (option_exists(menu, "g") < 0) {
01266          ast_log(LOG_WARNING, "No 's' nor 'g' extension in menu '%s'!\n", menu->title);
01267          return -1;
01268       }
01269    }
01270    while(!res) {
01271       while(menu->options[pos].option) {
01272          if (!strcasecmp(menu->options[pos].option, exten)) {
01273             res = ivr_dispatch(chan, menu->options + pos, exten, cbdata);
01274             if (option_debug)
01275                ast_log(LOG_DEBUG, "IVR Dispatch of '%s' (pos %d) yields %d\n", exten, pos, res);
01276             if (res < 0)
01277                break;
01278             else if (res & RES_UPONE)
01279                return 0;
01280             else if (res & RES_EXIT)
01281                return res;
01282             else if (res & RES_REPEAT) {
01283                int maxretries = res & 0xffff;
01284                if ((res & RES_RESTART) == RES_RESTART) {
01285                   retries = 0;
01286                } else
01287                   retries++;
01288                if (!maxretries)
01289                   maxretries = 3;
01290                if ((maxretries > 0) && (retries >= maxretries)) {
01291                   if (option_debug)
01292                      ast_log(LOG_DEBUG, "Max retries %d exceeded\n", maxretries);
01293                   return -2;
01294                } else {
01295                   if (option_exists(menu, "g") > -1) 
01296                      strcpy(exten, "g");
01297                   else if (option_exists(menu, "s") > -1)
01298                      strcpy(exten, "s");
01299                }
01300                pos = 0;
01301                continue;
01302             } else if (res && strchr(AST_DIGIT_ANY, res)) {
01303                if (option_debug)
01304                   ast_log(LOG_DEBUG, "Got start of extension, %c\n", res);
01305                exten[1] = '\0';
01306                exten[0] = res;
01307                if ((res = read_newoption(chan, menu, exten, sizeof(exten))))
01308                   break;
01309                if (option_exists(menu, exten) < 0) {
01310                   if (option_exists(menu, "i")) {
01311                      if (option_debug)
01312                         ast_log(LOG_DEBUG, "Invalid extension entered, going to 'i'!\n");
01313                      strcpy(exten, "i");
01314                      pos = 0;
01315                      continue;
01316                   } else {
01317                      if (option_debug)
01318                         ast_log(LOG_DEBUG, "Aborting on invalid entry, with no 'i' option!\n");
01319                      res = -2;
01320                      break;
01321                   }
01322                } else {
01323                   if (option_debug)
01324                      ast_log(LOG_DEBUG, "New existing extension: %s\n", exten);
01325                   pos = 0;
01326                   continue;
01327                }
01328             }
01329          }
01330          pos++;
01331       }
01332       if (option_debug)
01333          ast_log(LOG_DEBUG, "Stopping option '%s', res is %d\n", exten, res);
01334       pos = 0;
01335       if (!strcasecmp(exten, "s"))
01336          strcpy(exten, "g");
01337       else
01338          break;
01339    }
01340    return res;
01341 }
01342 
01343 int ast_ivr_menu_run(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
01344 {
01345    int res = ast_ivr_menu_run_internal(chan, menu, cbdata);
01346    /* Hide internal coding */
01347    return res > 0 ? 0 : res;
01348 }
01349    
01350 char *ast_read_textfile(const char *filename)
01351 {
01352    int fd;
01353    char *output = NULL;
01354    struct stat filesize;
01355    int count = 0;
01356    int res;
01357    if (stat(filename, &filesize) == -1) {
01358       ast_log(LOG_WARNING, "Error can't stat %s\n", filename);
01359       return NULL;
01360    }
01361    count = filesize.st_size + 1;
01362    fd = open(filename, O_RDONLY);
01363    if (fd < 0) {
01364       ast_log(LOG_WARNING, "Cannot open file '%s' for reading: %s\n", filename, strerror(errno));
01365       return NULL;
01366    }
01367    if ((output = ast_malloc(count))) {
01368       res = read(fd, output, count - 1);
01369       if (res == count - 1) {
01370          output[res] = '\0';
01371       } else {
01372          ast_log(LOG_WARNING, "Short read of %s (%d of %d): %s\n", filename, res, count - 1, strerror(errno));
01373          free(output);
01374          output = NULL;
01375       }
01376    }
01377    close(fd);
01378    return output;
01379 }
01380 
01381 int ast_app_parse_options(const struct ast_app_option *options, struct ast_flags *flags, char **args, char *optstr)
01382 {
01383    char *s;
01384    int curarg;
01385    unsigned int argloc;
01386    char *arg;
01387    int res = 0;
01388 
01389    ast_clear_flag(flags, AST_FLAGS_ALL);
01390 
01391    if (!optstr)
01392       return 0;
01393 
01394    s = optstr;
01395    while (*s) {
01396       curarg = *s++ & 0x7f;   /* the array (in app.h) has 128 entries */
01397       argloc = options[curarg].arg_index;
01398       if (*s == '(') {
01399          /* Has argument */
01400          arg = ++s;
01401          if ((s = strchr(s, ')'))) {
01402             if (argloc)
01403                args[argloc - 1] = arg;
01404             *s++ = '\0';
01405          } else {
01406             ast_log(LOG_WARNING, "Missing closing parenthesis for argument '%c' in string '%s'\n", curarg, arg);
01407             res = -1;
01408             break;
01409          }
01410       } else if (argloc) {
01411          args[argloc - 1] = "";
01412       }
01413       ast_set_flag(flags, options[curarg].flag);
01414    }
01415 
01416    return res;
01417 }
01418 

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