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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  */
00024 
00025 #include <stdio.h>
00026 #include <stdlib.h>
00027 #include <string.h>
00028 #include <sys/time.h>
00029 #include <signal.h>
00030 #include <errno.h>
00031 #include <unistd.h>
00032 #include <dirent.h>
00033 #include <sys/types.h>
00034 #include <sys/stat.h>
00035 #include <regex.h>
00036 
00037 #include "asterisk.h"
00038 
00039 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 10577 $")
00040 
00041 #include "asterisk/channel.h"
00042 #include "asterisk/pbx.h"
00043 #include "asterisk/file.h"
00044 #include "asterisk/app.h"
00045 #include "asterisk/dsp.h"
00046 #include "asterisk/logger.h"
00047 #include "asterisk/options.h"
00048 #include "asterisk/utils.h"
00049 #include "asterisk/lock.h"
00050 #include "asterisk/indications.h"
00051 
00052 #define MAX_OTHER_FORMATS 10
00053 
00054 
00055 /* !
00056 This function presents a dialtone and reads an extension into 'collect' 
00057 which must be a pointer to a **pre-initilized** array of char having a 
00058 size of 'size' suitable for writing to.  It will collect no more than the smaller 
00059 of 'maxlen' or 'size' minus the original strlen() of collect digits.
00060 \return 0 if extension does not exist, 1 if extension exists
00061 */
00062 int ast_app_dtget(struct ast_channel *chan, const char *context, char *collect, size_t size, int maxlen, int timeout) 
00063 {
00064    struct tone_zone_sound *ts;
00065    int res=0, x=0;
00066 
00067    if(maxlen > size)
00068       maxlen = size;
00069    
00070    if(!timeout && chan->pbx)
00071       timeout = chan->pbx->dtimeout;
00072    else if(!timeout)
00073       timeout = 5;
00074    
00075    ts = ast_get_indication_tone(chan->zone,"dial");
00076    if (ts && ts->data[0])
00077       res = ast_playtones_start(chan, 0, ts->data, 0);
00078    else 
00079       ast_log(LOG_NOTICE,"Huh....? no dial for indications?\n");
00080    
00081    for (x = strlen(collect); strlen(collect) < maxlen; ) {
00082       res = ast_waitfordigit(chan, timeout);
00083       if (!ast_ignore_pattern(context, collect))
00084          ast_playtones_stop(chan);
00085       if (res < 1)
00086          break;
00087       collect[x++] = res;
00088       if (!ast_matchmore_extension(chan, context, collect, 1, chan->cid.cid_num)) {
00089          if (collect[x-1] == '#') {
00090             /* Not a valid extension, ending in #, assume the # was to finish dialing */
00091             collect[x-1] = '\0';
00092          }
00093          break;
00094       }
00095    }
00096    if (res >= 0) {
00097       if (ast_exists_extension(chan, context, collect, 1, chan->cid.cid_num))
00098          res = 1;
00099       else
00100          res = 0;
00101    }
00102    return res;
00103 }
00104 
00105 
00106 
00107 /*! \param timeout set timeout to 0 for "standard" timeouts. Set timeout to -1 for 
00108    "ludicrous time" (essentially never times out) */
00109 int ast_app_getdata(struct ast_channel *c, char *prompt, char *s, int maxlen, int timeout)
00110 {
00111    int res,to,fto;
00112    /* XXX Merge with full version? XXX */
00113    if (maxlen)
00114       s[0] = '\0';
00115    if (prompt) {
00116       res = ast_streamfile(c, prompt, c->language);
00117       if (res < 0)
00118          return res;
00119    }
00120    fto = c->pbx ? c->pbx->rtimeout * 1000 : 6000;
00121    to = c->pbx ? c->pbx->dtimeout * 1000 : 2000;
00122 
00123    if (timeout > 0) 
00124       fto = to = timeout;
00125    if (timeout < 0) 
00126       fto = to = 1000000000;
00127    res = ast_readstring(c, s, maxlen, to, fto, "#");
00128    return res;
00129 }
00130 
00131 
00132 int ast_app_getdata_full(struct ast_channel *c, char *prompt, char *s, int maxlen, int timeout, int audiofd, int ctrlfd)
00133 {
00134    int res,to,fto;
00135    if (prompt) {
00136       res = ast_streamfile(c, prompt, c->language);
00137       if (res < 0)
00138          return res;
00139    }
00140    fto = 6000;
00141    to = 2000;
00142    if (timeout > 0) 
00143       fto = to = timeout;
00144    if (timeout < 0) 
00145       fto = to = 1000000000;
00146    res = ast_readstring_full(c, s, maxlen, to, fto, "#", audiofd, ctrlfd);
00147    return res;
00148 }
00149 
00150 int ast_app_getvoice(struct ast_channel *c, char *dest, char *dstfmt, char *prompt, int silence, int maxsec)
00151 {
00152    int res;
00153    struct ast_filestream *writer;
00154    int rfmt;
00155    int totalms=0, total;
00156    
00157    struct ast_frame *f;
00158    struct ast_dsp *sildet;
00159    /* Play prompt if requested */
00160    if (prompt) {
00161       res = ast_streamfile(c, prompt, c->language);
00162       if (res < 0)
00163          return res;
00164       res = ast_waitstream(c,"");
00165       if (res < 0)
00166          return res;
00167    }
00168    rfmt = c->readformat;
00169    res = ast_set_read_format(c, AST_FORMAT_SLINEAR);
00170    if (res < 0) {
00171       ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
00172       return -1;
00173    }
00174    sildet = ast_dsp_new();
00175    if (!sildet) {
00176       ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
00177       return -1;
00178    }
00179    writer = ast_writefile(dest, dstfmt, "Voice file", 0, 0, 0666);
00180    if (!writer) {
00181       ast_log(LOG_WARNING, "Unable to open file '%s' in format '%s' for writing\n", dest, dstfmt);
00182       ast_dsp_free(sildet);
00183       return -1;
00184    }
00185    for(;;) {
00186       if ((res = ast_waitfor(c, 2000)) < 0) {
00187          ast_log(LOG_NOTICE, "Waitfor failed while recording file '%s' format '%s'\n", dest, dstfmt);
00188          break;
00189       }
00190       if (res) {
00191          f = ast_read(c);
00192          if (!f) {
00193             ast_log(LOG_NOTICE, "Hungup while recording file '%s' format '%s'\n", dest, dstfmt);
00194             break;
00195          }
00196          if ((f->frametype == AST_FRAME_DTMF) && (f->subclass == '#')) {
00197             /* Ended happily with DTMF */
00198             ast_frfree(f);
00199             break;
00200          } else if (f->frametype == AST_FRAME_VOICE) {
00201             ast_dsp_silence(sildet, f, &total); 
00202             if (total > silence) {
00203                /* Ended happily with silence */
00204                ast_frfree(f);
00205                break;
00206             }
00207             totalms += f->samples / 8;
00208             if (totalms > maxsec * 1000) {
00209                /* Ended happily with too much stuff */
00210                ast_log(LOG_NOTICE, "Constraining voice on '%s' to %d seconds\n", c->name, maxsec);
00211                ast_frfree(f);
00212                break;
00213             }
00214             res = ast_writestream(writer, f);
00215             if (res < 0) {
00216                ast_log(LOG_WARNING, "Failed to write to stream at %s!\n", dest);
00217                ast_frfree(f);
00218                break;
00219             }
00220                
00221          }
00222          ast_frfree(f);
00223       }
00224    }
00225    res = ast_set_read_format(c, rfmt);
00226    if (res)
00227       ast_log(LOG_WARNING, "Unable to restore read format on '%s'\n", c->name);
00228    ast_dsp_free(sildet);
00229    ast_closestream(writer);
00230    return 0;
00231 }
00232 
00233 static int (*ast_has_voicemail_func)(const char *mailbox, const char *folder) = NULL;
00234 static int (*ast_messagecount_func)(const char *mailbox, int *newmsgs, int *oldmsgs) = NULL;
00235 
00236 void ast_install_vm_functions(int (*has_voicemail_func)(const char *mailbox, const char *folder),
00237                int (*messagecount_func)(const char *mailbox, int *newmsgs, int *oldmsgs))
00238 {
00239    ast_has_voicemail_func = has_voicemail_func;
00240    ast_messagecount_func = messagecount_func;
00241 }
00242 
00243 void ast_uninstall_vm_functions(void)
00244 {
00245    ast_has_voicemail_func = NULL;
00246    ast_messagecount_func = NULL;
00247 }
00248 
00249 int ast_app_has_voicemail(const char *mailbox, const char *folder)
00250 {
00251    static int warned = 0;
00252    if (ast_has_voicemail_func)
00253       return ast_has_voicemail_func(mailbox, folder);
00254 
00255    if ((option_verbose > 2) && !warned) {
00256       ast_verbose(VERBOSE_PREFIX_3 "Message check requested for mailbox %s/folder %s but voicemail not loaded.\n", mailbox, folder ? folder : "INBOX");
00257       warned++;
00258    }
00259    return 0;
00260 }
00261 
00262 
00263 int ast_app_messagecount(const char *mailbox, int *newmsgs, int *oldmsgs)
00264 {
00265    static int warned = 0;
00266    if (newmsgs)
00267       *newmsgs = 0;
00268    if (oldmsgs)
00269       *oldmsgs = 0;
00270    if (ast_messagecount_func)
00271       return ast_messagecount_func(mailbox, newmsgs, oldmsgs);
00272 
00273    if (!warned && (option_verbose > 2)) {
00274       warned++;
00275       ast_verbose(VERBOSE_PREFIX_3 "Message count requested for mailbox %s but voicemail not loaded.\n", mailbox);
00276    }
00277 
00278    return 0;
00279 }
00280 
00281 int ast_dtmf_stream(struct ast_channel *chan,struct ast_channel *peer,char *digits,int between) 
00282 {
00283    char *ptr;
00284    int res = 0;
00285    struct ast_frame f;
00286    if (!between)
00287       between = 100;
00288 
00289    if (peer)
00290       res = ast_autoservice_start(peer);
00291 
00292    if (!res) {
00293       res = ast_waitfor(chan,100);
00294       if (res > -1) {
00295          for (ptr=digits; *ptr; ptr++) {
00296             if (*ptr == 'w') {
00297                res = ast_safe_sleep(chan, 500);
00298                if (res) 
00299                   break;
00300                continue;
00301             }
00302             memset(&f, 0, sizeof(f));
00303             f.frametype = AST_FRAME_DTMF;
00304             f.subclass = *ptr;
00305             f.src = "ast_dtmf_stream";
00306             if (strchr("0123456789*#abcdABCD",*ptr)==NULL) {
00307                ast_log(LOG_WARNING, "Illegal DTMF character '%c' in string. (0-9*#aAbBcCdD allowed)\n",*ptr);
00308             } else {
00309                res = ast_write(chan, &f);
00310                if (res) 
00311                   break;
00312                /* pause between digits */
00313                res = ast_safe_sleep(chan,between);
00314                if (res) 
00315                   break;
00316             }
00317          }
00318       }
00319       if (peer) {
00320          /* Stop autoservice on the peer channel, but don't overwrite any error condition 
00321             that has occurred previously while acting on the primary channel */  
00322          if (ast_autoservice_stop(peer) && !res)
00323             res = -1;
00324       }
00325    }
00326    return res;
00327 }
00328 
00329 struct linear_state {
00330    int fd;
00331    int autoclose;
00332    int allowoverride;
00333    int origwfmt;
00334 };
00335 
00336 static void linear_release(struct ast_channel *chan, void *params)
00337 {
00338    struct linear_state *ls = params;
00339    if (ls->origwfmt && ast_set_write_format(chan, ls->origwfmt)) {
00340       ast_log(LOG_WARNING, "Unable to restore channel '%s' to format '%d'\n", chan->name, ls->origwfmt);
00341    }
00342    if (ls->autoclose)
00343       close(ls->fd);
00344    free(params);
00345 }
00346 
00347 static int linear_generator(struct ast_channel *chan, void *data, int len, int samples)
00348 {
00349    struct ast_frame f;
00350    short buf[2048 + AST_FRIENDLY_OFFSET / 2];
00351    struct linear_state *ls = data;
00352    int res;
00353    len = samples * 2;
00354    if (len > sizeof(buf) - AST_FRIENDLY_OFFSET) {
00355       ast_log(LOG_WARNING, "Can't generate %d bytes of data!\n" ,len);
00356       len = sizeof(buf) - AST_FRIENDLY_OFFSET;
00357    }
00358    memset(&f, 0, sizeof(f));
00359    res = read(ls->fd, buf + AST_FRIENDLY_OFFSET/2, len);
00360    if (res > 0) {
00361       f.frametype = AST_FRAME_VOICE;
00362       f.subclass = AST_FORMAT_SLINEAR;
00363       f.data = buf + AST_FRIENDLY_OFFSET/2;
00364       f.datalen = res;
00365       f.samples = res / 2;
00366       f.offset = AST_FRIENDLY_OFFSET;
00367       ast_write(chan, &f);
00368       if (res == len)
00369          return 0;
00370    }
00371    return -1;
00372 }
00373 
00374 static void *linear_alloc(struct ast_channel *chan, void *params)
00375 {
00376    struct linear_state *ls;
00377    /* In this case, params is already malloc'd */
00378    if (params) {
00379       ls = params;
00380       if (ls->allowoverride)
00381          ast_set_flag(chan, AST_FLAG_WRITE_INT);
00382       else
00383          ast_clear_flag(chan, AST_FLAG_WRITE_INT);
00384       ls->origwfmt = chan->writeformat;
00385       if (ast_set_write_format(chan, AST_FORMAT_SLINEAR)) {
00386          ast_log(LOG_WARNING, "Unable to set '%s' to linear format (write)\n", chan->name);
00387          free(ls);
00388          ls = params = NULL;
00389       }
00390    }
00391    return params;
00392 }
00393 
00394 static struct ast_generator linearstream = 
00395 {
00396    alloc: linear_alloc,
00397    release: linear_release,
00398    generate: linear_generator,
00399 };
00400 
00401 int ast_linear_stream(struct ast_channel *chan, const char *filename, int fd, int allowoverride)
00402 {
00403    struct linear_state *lin;
00404    char tmpf[256];
00405    int res = -1;
00406    int autoclose = 0;
00407    if (fd < 0) {
00408       if (ast_strlen_zero(filename))
00409          return -1;
00410       autoclose = 1;
00411       if (filename[0] == '/') 
00412          ast_copy_string(tmpf, filename, sizeof(tmpf));
00413       else
00414          snprintf(tmpf, sizeof(tmpf), "%s/%s/%s", (char *)ast_config_AST_VAR_DIR, "sounds", filename);
00415       fd = open(tmpf, O_RDONLY);
00416       if (fd < 0){
00417          ast_log(LOG_WARNING, "Unable to open file '%s': %s\n", tmpf, strerror(errno));
00418          return -1;
00419       }
00420    }
00421    lin = malloc(sizeof(struct linear_state));
00422    if (lin) {
00423       memset(lin, 0, sizeof(lin));
00424       lin->fd = fd;
00425       lin->allowoverride = allowoverride;
00426       lin->autoclose = autoclose;
00427       res = ast_activate_generator(chan, &linearstream, lin);
00428    }
00429    return res;
00430 }
00431 
00432 int ast_control_streamfile(struct ast_channel *chan, const char *file,
00433             const char *fwd, const char *rev,
00434             const char *stop, const char *pause,
00435             const char *restart, int skipms) 
00436 {
00437    char *breaks = NULL;
00438    char *end = NULL;
00439    int blen = 2;
00440    int res;
00441    long pause_restart_point = 0;
00442 
00443    if (stop)
00444       blen += strlen(stop);
00445    if (pause)
00446       blen += strlen(pause);
00447    if (restart)
00448       blen += strlen(restart);
00449 
00450    if (blen > 2) {
00451       breaks = alloca(blen + 1);
00452       breaks[0] = '\0';
00453       if (stop)
00454          strcat(breaks, stop);
00455       if (pause)
00456          strcat(breaks, pause);
00457       if (restart)
00458          strcat(breaks, restart);
00459    }
00460    if (chan->_state != AST_STATE_UP)
00461       res = ast_answer(chan);
00462 
00463    if (file) {
00464       if ((end = strchr(file,':'))) {
00465          if (!strcasecmp(end, ":end")) {
00466             *end = '\0';
00467             end++;
00468          }
00469       }
00470    }
00471 
00472    for (;;) {
00473       ast_stopstream(chan);
00474       res = ast_streamfile(chan, file, chan->language);
00475       if (!res) {
00476          if (pause_restart_point) {
00477             ast_seekstream(chan->stream, pause_restart_point, SEEK_SET);
00478             pause_restart_point = 0;
00479          }
00480          else if (end) {
00481             ast_seekstream(chan->stream, 0, SEEK_END);
00482             end = NULL;
00483          };
00484          res = ast_waitstream_fr(chan, breaks, fwd, rev, skipms);
00485       }
00486 
00487       if (res < 1)
00488          break;
00489 
00490       /* We go at next loop if we got the restart char */
00491       if (restart && strchr(restart, res)) {
00492          ast_log(LOG_DEBUG, "we'll restart the stream here at next loop\n");
00493          pause_restart_point = 0;
00494          continue;
00495       }
00496 
00497       if (pause && strchr(pause, res)) {
00498          pause_restart_point = ast_tellstream(chan->stream);
00499          for (;;) {
00500             ast_stopstream(chan);
00501             res = ast_waitfordigit(chan, 1000);
00502             if (!res)
00503                continue;
00504             else if (res == -1 || strchr(pause, res) || (stop && strchr(stop, res)))
00505                break;
00506          }
00507          if (res == *pause) {
00508             res = 0;
00509             continue;
00510          }
00511       }
00512 
00513       if (res == -1)
00514          break;
00515 
00516       /* if we get one of our stop chars, return it to the calling function */
00517       if (stop && strchr(stop, res))
00518          break;
00519    }
00520 
00521    ast_stopstream(chan);
00522 
00523    return res;
00524 }
00525 
00526 int ast_play_and_wait(struct ast_channel *chan, const char *fn)
00527 {
00528    int d;
00529    d = ast_streamfile(chan, fn, chan->language);
00530    if (d)
00531       return d;
00532    d = ast_waitstream(chan, AST_DIGIT_ANY);
00533    ast_stopstream(chan);
00534    return d;
00535 }
00536 
00537 static int global_silence_threshold = 128;
00538 static int global_maxsilence = 0;
00539 
00540 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)
00541 {
00542    int d;
00543    char *fmts;
00544    char comment[256];
00545    int x, fmtcnt=1, res=-1,outmsg=0;
00546    struct ast_frame *f;
00547    struct ast_filestream *others[MAX_OTHER_FORMATS];
00548    char *sfmt[MAX_OTHER_FORMATS];
00549    char *stringp=NULL;
00550    time_t start, end;
00551    struct ast_dsp *sildet=NULL;     /* silence detector dsp */
00552    int totalsilence = 0;
00553    int dspsilence = 0;
00554    int gotsilence = 0;     /* did we timeout for silence? */
00555    int rfmt=0;
00556    struct ast_silence_generator *silgen = NULL;
00557 
00558    if (silencethreshold < 0)
00559       silencethreshold = global_silence_threshold;
00560 
00561    if (maxsilence < 0)
00562       maxsilence = global_maxsilence;
00563 
00564    /* barf if no pointer passed to store duration in */
00565    if (duration == NULL) {
00566       ast_log(LOG_WARNING, "Error play_and_record called without duration pointer\n");
00567       return -1;
00568    }
00569 
00570    ast_log(LOG_DEBUG,"play_and_record: %s, %s, '%s'\n", playfile ? playfile : "<None>", recordfile, fmt);
00571    snprintf(comment,sizeof(comment),"Playing %s, Recording to: %s on %s\n", playfile ? playfile : "<None>", recordfile, chan->name);
00572 
00573    if (playfile) {
00574       d = ast_play_and_wait(chan, playfile);
00575       if (d > -1)
00576          d = ast_streamfile(chan, "beep",chan->language);
00577       if (!d)
00578          d = ast_waitstream(chan,"");
00579       if (d < 0)
00580          return -1;
00581    }
00582 
00583    fmts = ast_strdupa(fmt);
00584 
00585    stringp=fmts;
00586    strsep(&stringp, "|");
00587    ast_log(LOG_DEBUG,"Recording Formats: sfmts=%s\n", fmts);
00588    sfmt[0] = ast_strdupa(fmts);
00589 
00590    while((fmt = strsep(&stringp, "|"))) {
00591       if (fmtcnt > MAX_OTHER_FORMATS - 1) {
00592          ast_log(LOG_WARNING, "Please increase MAX_OTHER_FORMATS in app.c\n");
00593          break;
00594       }
00595       sfmt[fmtcnt++] = ast_strdupa(fmt);
00596    }
00597 
00598    time(&start);
00599    end=start;  /* pre-initialize end to be same as start in case we never get into loop */
00600    for (x=0;x<fmtcnt;x++) {
00601       others[x] = ast_writefile(recordfile, sfmt[x], comment, O_TRUNC, 0, 0700);
00602       ast_verbose( VERBOSE_PREFIX_3 "x=%d, open writing:  %s format: %s, %p\n", x, recordfile, sfmt[x], others[x]);
00603 
00604       if (!others[x]) {
00605          break;
00606       }
00607    }
00608 
00609    if (path)
00610       ast_unlock_path(path);
00611 
00612    if (maxsilence > 0) {
00613       sildet = ast_dsp_new(); /* Create the silence detector */
00614       if (!sildet) {
00615          ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
00616          return -1;
00617       }
00618       ast_dsp_set_threshold(sildet, silencethreshold);
00619       rfmt = chan->readformat;
00620       res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
00621       if (res < 0) {
00622          ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
00623          ast_dsp_free(sildet);
00624          return -1;
00625       }
00626    }
00627 
00628    /* Request a video update */
00629    ast_indicate(chan, AST_CONTROL_VIDUPDATE);
00630 
00631    if (option_transmit_silence_during_record)
00632       silgen = ast_channel_start_silence_generator(chan);
00633 
00634    if (x == fmtcnt) {
00635    /* Loop forever, writing the packets we read to the writer(s), until
00636       we read a # or get a hangup */
00637       f = NULL;
00638       for(;;) {
00639          res = ast_waitfor(chan, 2000);
00640          if (!res) {
00641             ast_log(LOG_DEBUG, "One waitfor failed, trying another\n");
00642             /* Try one more time in case of masq */
00643             res = ast_waitfor(chan, 2000);
00644             if (!res) {
00645                ast_log(LOG_WARNING, "No audio available on %s??\n", chan->name);
00646                res = -1;
00647             }
00648          }
00649 
00650          if (res < 0) {
00651             f = NULL;
00652             break;
00653          }
00654          f = ast_read(chan);
00655          if (!f)
00656             break;
00657          if (f->frametype == AST_FRAME_VOICE) {
00658             /* write each format */
00659             for (x=0;x<fmtcnt;x++) {
00660                res = ast_writestream(others[x], f);
00661             }
00662 
00663             /* Silence Detection */
00664             if (maxsilence > 0) {
00665                dspsilence = 0;
00666                ast_dsp_silence(sildet, f, &dspsilence);
00667                if (dspsilence)
00668                   totalsilence = dspsilence;
00669                else
00670                   totalsilence = 0;
00671 
00672                if (totalsilence > maxsilence) {
00673                   /* Ended happily with silence */
00674                   if (option_verbose > 2)
00675                      ast_verbose( VERBOSE_PREFIX_3 "Recording automatically stopped after a silence of %d seconds\n", totalsilence/1000);
00676                   ast_frfree(f);
00677                   gotsilence = 1;
00678                   outmsg=2;
00679                   break;
00680                }
00681             }
00682             /* Exit on any error */
00683             if (res) {
00684                ast_log(LOG_WARNING, "Error writing frame\n");
00685                ast_frfree(f);
00686                break;
00687             }
00688          } else if (f->frametype == AST_FRAME_VIDEO) {
00689             /* Write only once */
00690             ast_writestream(others[0], f);
00691          } else if (f->frametype == AST_FRAME_DTMF) {
00692             if (f->subclass == '#') {
00693                if (option_verbose > 2)
00694                   ast_verbose( VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
00695                res = '#';
00696                outmsg = 2;
00697                ast_frfree(f);
00698                break;
00699             }
00700             if (f->subclass == '0') {
00701             /* Check for a '0' during message recording also, in case caller wants operator */
00702                if (option_verbose > 2)
00703                   ast_verbose(VERBOSE_PREFIX_3 "User cancelled by pressing %c\n", f->subclass);
00704                res = '0';
00705                outmsg = 0;
00706                ast_frfree(f);
00707                break;
00708             }
00709          }
00710          if (maxtime) {
00711             time(&end);
00712             if (maxtime < (end - start)) {
00713                if (option_verbose > 2)
00714                   ast_verbose( VERBOSE_PREFIX_3 "Took too long, cutting it short...\n");
00715                outmsg = 2;
00716                res = 't';
00717                ast_frfree(f);
00718                break;
00719             }
00720          }
00721          ast_frfree(f);
00722       }
00723       if (end == start) time(&end);
00724       if (!f) {
00725          if (option_verbose > 2)
00726             ast_verbose( VERBOSE_PREFIX_3 "User hung up\n");
00727          res = -1;
00728          outmsg=1;
00729       }
00730    } else {
00731       ast_log(LOG_WARNING, "Error creating writestream '%s', format '%s'\n", recordfile, sfmt[x]);
00732    }
00733 
00734    if (silgen)
00735       ast_channel_stop_silence_generator(chan, silgen);
00736 
00737    *duration = end - start;
00738 
00739    for (x=0;x<fmtcnt;x++) {
00740       if (!others[x])
00741          break;
00742       if (res > 0) {
00743          if (totalsilence)
00744             ast_stream_rewind(others[x], totalsilence-200);
00745          else
00746             ast_stream_rewind(others[x], 200);
00747       }
00748       ast_truncstream(others[x]);
00749       ast_closestream(others[x]);
00750    }
00751    if (rfmt) {
00752       if (ast_set_read_format(chan, rfmt)) {
00753          ast_log(LOG_WARNING, "Unable to restore format %s to channel '%s'\n", ast_getformatname(rfmt), chan->name);
00754       }
00755    }
00756    if (outmsg > 1) {
00757       /* Let them know recording is stopped */
00758       if(!ast_streamfile(chan, "auth-thankyou", chan->language))
00759          ast_waitstream(chan, "");
00760    }
00761    if (sildet)
00762       ast_dsp_free(sildet);
00763    return res;
00764 }
00765 
00766 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)
00767 {
00768    int d = 0;
00769    char *fmts;
00770    char comment[256];
00771    int x, fmtcnt=1, res=-1,outmsg=0;
00772    struct ast_frame *f;
00773    struct ast_filestream *others[MAX_OTHER_FORMATS];
00774    struct ast_filestream *realfiles[MAX_OTHER_FORMATS];
00775    char *sfmt[MAX_OTHER_FORMATS];
00776    char *stringp=NULL;
00777    time_t start, end;
00778    struct ast_dsp *sildet;    /* silence detector dsp */
00779    int totalsilence = 0;
00780    int dspsilence = 0;
00781    int gotsilence = 0;     /* did we timeout for silence? */
00782    int rfmt=0; 
00783    char prependfile[80];
00784    
00785    if (silencethreshold < 0)
00786       silencethreshold = global_silence_threshold;
00787 
00788    if (maxsilence < 0)
00789       maxsilence = global_maxsilence;
00790 
00791    /* barf if no pointer passed to store duration in */
00792    if (duration == NULL) {
00793       ast_log(LOG_WARNING, "Error play_and_prepend called without duration pointer\n");
00794       return -1;
00795    }
00796 
00797    ast_log(LOG_DEBUG,"play_and_prepend: %s, %s, '%s'\n", playfile ? playfile : "<None>", recordfile, fmt);
00798    snprintf(comment,sizeof(comment),"Playing %s, Recording to: %s on %s\n", playfile ? playfile : "<None>", recordfile, chan->name);
00799 
00800    if (playfile || beep) { 
00801       if (!beep)
00802          d = ast_play_and_wait(chan, playfile);
00803       if (d > -1)
00804          d = ast_streamfile(chan, "beep",chan->language);
00805       if (!d)
00806          d = ast_waitstream(chan,"");
00807       if (d < 0)
00808          return -1;
00809    }
00810    ast_copy_string(prependfile, recordfile, sizeof(prependfile)); 
00811    strncat(prependfile, "-prepend", sizeof(prependfile) - strlen(prependfile) - 1);
00812          
00813    fmts = ast_strdupa(fmt);
00814    
00815    stringp=fmts;
00816    strsep(&stringp, "|");
00817    ast_log(LOG_DEBUG,"Recording Formats: sfmts=%s\n", fmts);   
00818    sfmt[0] = ast_strdupa(fmts);
00819    
00820    while((fmt = strsep(&stringp, "|"))) {
00821       if (fmtcnt > MAX_OTHER_FORMATS - 1) {
00822          ast_log(LOG_WARNING, "Please increase MAX_OTHER_FORMATS in app.c\n");
00823          break;
00824       }
00825       sfmt[fmtcnt++] = ast_strdupa(fmt);
00826    }
00827 
00828    time(&start);
00829    end=start;  /* pre-initialize end to be same as start in case we never get into loop */
00830    for (x=0;x<fmtcnt;x++) {
00831       others[x] = ast_writefile(prependfile, sfmt[x], comment, O_TRUNC, 0, 0700);
00832       ast_verbose( VERBOSE_PREFIX_3 "x=%d, open writing:  %s format: %s, %p\n", x, prependfile, sfmt[x], others[x]);
00833       if (!others[x]) {
00834          break;
00835       }
00836    }
00837    
00838    sildet = ast_dsp_new(); /* Create the silence detector */
00839    if (!sildet) {
00840       ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
00841       return -1;
00842    }
00843    ast_dsp_set_threshold(sildet, silencethreshold);
00844 
00845    if (maxsilence > 0) {
00846       rfmt = chan->readformat;
00847       res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
00848       if (res < 0) {
00849          ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
00850          ast_dsp_free(sildet);
00851          return -1;
00852       }
00853    }
00854                   
00855    if (x == fmtcnt) {
00856    /* Loop forever, writing the packets we read to the writer(s), until
00857       we read a # or get a hangup */
00858       f = NULL;
00859       for(;;) {
00860          res = ast_waitfor(chan, 2000);
00861          if (!res) {
00862             ast_log(LOG_DEBUG, "One waitfor failed, trying another\n");
00863             /* Try one more time in case of masq */
00864             res = ast_waitfor(chan, 2000);
00865             if (!res) {
00866                ast_log(LOG_WARNING, "No audio available on %s??\n", chan->name);
00867                res = -1;
00868             }
00869          }
00870          
00871          if (res < 0) {
00872             f = NULL;
00873             break;
00874          }
00875          f = ast_read(chan);
00876          if (!f)
00877             break;
00878          if (f->frametype == AST_FRAME_VOICE) {
00879             /* write each format */
00880             for (x=0;x<fmtcnt;x++) {
00881                if (!others[x])
00882                   break;
00883                res = ast_writestream(others[x], f);
00884             }
00885             
00886             /* Silence Detection */
00887             if (maxsilence > 0) {
00888                dspsilence = 0;
00889                ast_dsp_silence(sildet, f, &dspsilence);
00890                if (dspsilence)
00891                   totalsilence = dspsilence;
00892                else
00893                   totalsilence = 0;
00894                
00895                if (totalsilence > maxsilence) {
00896                /* Ended happily with silence */
00897                if (option_verbose > 2) 
00898                   ast_verbose( VERBOSE_PREFIX_3 "Recording automatically stopped after a silence of %d seconds\n", totalsilence/1000);
00899                ast_frfree(f);
00900                gotsilence = 1;
00901                outmsg=2;
00902                break;
00903                }
00904             }
00905             /* Exit on any error */
00906             if (res) {
00907                ast_log(LOG_WARNING, "Error writing frame\n");
00908                ast_frfree(f);
00909                break;
00910             }
00911          } else if (f->frametype == AST_FRAME_VIDEO) {
00912             /* Write only once */
00913             ast_writestream(others[0], f);
00914          } else if (f->frametype == AST_FRAME_DTMF) {
00915             /* stop recording with any digit */
00916             if (option_verbose > 2) 
00917                ast_verbose( VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
00918             res = 't';
00919             outmsg = 2;
00920             ast_frfree(f);
00921             break;
00922          }
00923          if (maxtime) {
00924             time(&end);
00925             if (maxtime < (end - start)) {
00926                if (option_verbose > 2)
00927                   ast_verbose( VERBOSE_PREFIX_3 "Took too long, cutting it short...\n");
00928                res = 't';
00929                outmsg=2;
00930                ast_frfree(f);
00931                break;
00932             }
00933          }
00934          ast_frfree(f);
00935       }
00936       if (end == start) time(&end);
00937       if (!f) {
00938          if (option_verbose > 2) 
00939             ast_verbose( VERBOSE_PREFIX_3 "User hung up\n");
00940          res = -1;
00941          outmsg=1;
00942 #if 0
00943          /* delete all the prepend files */
00944          for (x=0;x<fmtcnt;x++) {
00945             if (!others[x])
00946                break;
00947             ast_closestream(others[x]);
00948             ast_filedelete(prependfile, sfmt[x]);
00949          }
00950 #endif
00951       }
00952    } else {
00953       ast_log(LOG_WARNING, "Error creating writestream '%s', format '%s'\n", prependfile, sfmt[x]); 
00954    }
00955    ast_dsp_free(sildet);
00956    *duration = end - start;
00957 #if 0
00958    if (outmsg > 1) {
00959 #else
00960    if (outmsg) {
00961 #endif
00962       struct ast_frame *fr;
00963       for (x=0;x<fmtcnt;x++) {
00964          snprintf(comment, sizeof(comment), "Opening the real file %s.%s\n", recordfile, sfmt[x]);
00965          realfiles[x] = ast_readfile(recordfile, sfmt[x], comment, O_RDONLY, 0, 0);
00966          if (!others[x] || !realfiles[x])
00967             break;
00968          if (totalsilence)
00969             ast_stream_rewind(others[x], totalsilence-200);
00970          else
00971             ast_stream_rewind(others[x], 200);
00972          ast_truncstream(others[x]);
00973          /* add the original file too */
00974          while ((fr = ast_readframe(realfiles[x]))) {
00975             ast_writestream(others[x],fr);
00976          }
00977          ast_closestream(others[x]);
00978          ast_closestream(realfiles[x]);
00979          ast_filerename(prependfile, recordfile, sfmt[x]);
00980 #if 0
00981          ast_verbose("Recording Format: sfmts=%s, prependfile %s, recordfile %s\n", sfmt[x],prependfile,recordfile);
00982 #endif
00983          ast_filedelete(prependfile, sfmt[x]);
00984       }
00985    }
00986    if (rfmt) {
00987       if (ast_set_read_format(chan, rfmt)) {
00988          ast_log(LOG_WARNING, "Unable to restore format %s to channel '%s'\n", ast_getformatname(rfmt), chan->name);
00989       }
00990    }
00991    if (outmsg) {
00992       if (outmsg > 1) {
00993          /* Let them know it worked */
00994          ast_streamfile(chan, "auth-thankyou", chan->language);
00995          ast_waitstream(chan, "");
00996       }
00997    }  
00998    return res;
00999 }
01000 
01001 /* Channel group core functions */
01002 
01003 int ast_app_group_split_group(char *data, char *group, int group_max, char *category, int category_max)
01004 {
01005    int res=0;
01006    char tmp[256];
01007    char *grp=NULL, *cat=NULL;
01008 
01009    if (!ast_strlen_zero(data)) {
01010       ast_copy_string(tmp, data, sizeof(tmp));
01011       grp = tmp;
01012       cat = strchr(tmp, '@');
01013       if (cat) {
01014          *cat = '\0';
01015          cat++;
01016       }
01017    }
01018 
01019    if (!ast_strlen_zero(grp))
01020       ast_copy_string(group, grp, group_max);
01021    else
01022       res = -1;
01023 
01024    if (cat)
01025       snprintf(category, category_max, "%s_%s", GROUP_CATEGORY_PREFIX, cat);
01026    else
01027       ast_copy_string(category, GROUP_CATEGORY_PREFIX, category_max);
01028 
01029    return res;
01030 }
01031 
01032 int ast_app_group_set_channel(struct ast_channel *chan, char *data)
01033 {
01034    int res=0;
01035    char group[80] = "";
01036    char category[80] = "";
01037 
01038    if (!ast_app_group_split_group(data, group, sizeof(group), category, sizeof(category))) {
01039       pbx_builtin_setvar_helper(chan, category, group);
01040    } else
01041       res = -1;
01042 
01043    return res;
01044 }
01045 
01046 int ast_app_group_get_count(char *group, char *category)
01047 {
01048    struct ast_channel *chan;
01049    int count = 0;
01050    char *test;
01051    char cat[80];
01052    char *s;
01053 
01054    if (ast_strlen_zero(group))
01055       return 0;
01056 
01057    s = (!ast_strlen_zero(category)) ? category : GROUP_CATEGORY_PREFIX;
01058    ast_copy_string(cat, s, sizeof(cat));
01059 
01060    chan = NULL;
01061    while ((chan = ast_channel_walk_locked(chan)) != NULL) {
01062       test = pbx_builtin_getvar_helper(chan, cat);
01063       if (test && !strcasecmp(test, group))
01064          count++;
01065       ast_mutex_unlock(&chan->lock);
01066    }
01067 
01068    return count;
01069 }
01070 
01071 int ast_app_group_match_get_count(char *groupmatch, char *category)
01072 {
01073    regex_t regexbuf;
01074    struct ast_channel *chan;
01075    int count = 0;
01076    char *test;
01077    char cat[80];
01078    char *s;
01079 
01080    if (ast_strlen_zero(groupmatch))
01081       return 0;
01082 
01083    /* if regex compilation fails, return zero matches */
01084    if (regcomp(&regexbuf, groupmatch, REG_EXTENDED | REG_NOSUB))
01085       return 0;
01086 
01087    s = (!ast_strlen_zero(category)) ? category : GROUP_CATEGORY_PREFIX;
01088    ast_copy_string(cat, s, sizeof(cat));
01089 
01090    chan = NULL;
01091    while ((chan = ast_channel_walk_locked(chan)) != NULL) {
01092       test = pbx_builtin_getvar_helper(chan, cat);
01093       if (test && !regexec(&regexbuf, test, 0, NULL, 0))
01094          count++;
01095       ast_mutex_unlock(&chan->lock);
01096    }
01097 
01098    regfree(&regexbuf);
01099 
01100    return count;
01101 }
01102 
01103 unsigned int ast_app_separate_args(char *buf, char delim, char **array, int arraylen)
01104 {
01105    int argc;
01106    char *scan;
01107    int paren = 0;
01108 
01109    if (!buf || !array || !arraylen)
01110       return 0;
01111 
01112    memset(array, 0, arraylen * sizeof(*array));
01113 
01114    scan = buf;
01115 
01116    for (argc = 0; *scan && (argc < arraylen - 1); argc++) {
01117       array[argc] = scan;
01118       for (; *scan; scan++) {
01119          if (*scan == '(')
01120             paren++;
01121          else if (*scan == ')') {
01122             if (paren)
01123                paren--;
01124          } else if ((*scan == delim) && !paren) {
01125             *scan++ = '\0';
01126             break;
01127          }
01128       }
01129    }
01130 
01131    if (*scan)
01132       array[argc++] = scan;
01133 
01134    return argc;
01135 }
01136 
01137 enum AST_LOCK_RESULT ast_lock_path(const char *path)
01138 {
01139    char *s;
01140    char *fs;
01141    int res;
01142    int fd;
01143    time_t start;
01144 
01145    s = alloca(strlen(path) + 10);
01146    fs = alloca(strlen(path) + 20);
01147 
01148    if (!fs || !s) {
01149       ast_log(LOG_WARNING, "Out of memory!\n");
01150       return AST_LOCK_FAILURE;
01151    }
01152 
01153    snprintf(fs, strlen(path) + 19, "%s/.lock-%08x", path, rand());
01154    fd = open(fs, O_WRONLY | O_CREAT | O_EXCL, 0600);
01155    if (fd < 0) {
01156       fprintf(stderr, "Unable to create lock file '%s': %s\n", path, strerror(errno));
01157       return AST_LOCK_PATH_NOT_FOUND;
01158    }
01159    close(fd);
01160 
01161    snprintf(s, strlen(path) + 9, "%s/.lock", path);
01162    time(&start);
01163    while (((res = link(fs, s)) < 0) && (errno == EEXIST) && (time(NULL) - start < 5))
01164       usleep(1);
01165    if (res) {
01166       ast_log(LOG_WARNING, "Failed to lock path '%s': %s\n", path, strerror(errno));
01167       return AST_LOCK_TIMEOUT;
01168    } else {
01169       unlink(fs);
01170       ast_log(LOG_DEBUG, "Locked path '%s'\n", path);
01171       return AST_LOCK_SUCCESS;
01172    }
01173 }
01174 
01175 int ast_unlock_path(const char *path)
01176 {
01177    char *s;
01178    s = alloca(strlen(path) + 10);
01179    if (!s)
01180       return -1;
01181    snprintf(s, strlen(path) + 9, "%s/%s", path, ".lock");
01182    ast_log(LOG_DEBUG, "Unlocked path '%s'\n", path);
01183    return unlink(s);
01184 }
01185 
01186 int ast_record_review(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, const char *path) 
01187 {
01188    int silencethreshold = 128; 
01189    int maxsilence=0;
01190    int res = 0;
01191    int cmd = 0;
01192    int max_attempts = 3;
01193    int attempts = 0;
01194    int recorded = 0;
01195    int message_exists = 0;
01196    /* Note that urgent and private are for flagging messages as such in the future */
01197 
01198    /* barf if no pointer passed to store duration in */
01199    if (duration == NULL) {
01200       ast_log(LOG_WARNING, "Error ast_record_review called without duration pointer\n");
01201       return -1;
01202    }
01203 
01204    cmd = '3';   /* Want to start by recording */
01205 
01206    while ((cmd >= 0) && (cmd != 't')) {
01207       switch (cmd) {
01208       case '1':
01209          if (!message_exists) {
01210             /* In this case, 1 is to record a message */
01211             cmd = '3';
01212             break;
01213          } else {
01214             ast_streamfile(chan, "vm-msgsaved", chan->language);
01215             ast_waitstream(chan, "");
01216             cmd = 't';
01217             return res;
01218          }
01219       case '2':
01220          /* Review */
01221          ast_verbose(VERBOSE_PREFIX_3 "Reviewing the recording\n");
01222          ast_streamfile(chan, recordfile, chan->language);
01223          cmd = ast_waitstream(chan, AST_DIGIT_ANY);
01224          break;
01225       case '3':
01226          message_exists = 0;
01227          /* Record */
01228          if (recorded == 1)
01229             ast_verbose(VERBOSE_PREFIX_3 "Re-recording\n");
01230          else  
01231             ast_verbose(VERBOSE_PREFIX_3 "Recording\n");
01232          recorded = 1;
01233          cmd = ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, silencethreshold, maxsilence, path);
01234          if (cmd == -1) {
01235          /* User has hung up, no options to give */
01236             return cmd;
01237          }
01238          if (cmd == '0') {
01239             break;
01240          } else if (cmd == '*') {
01241             break;
01242          } 
01243          else {
01244             /* If all is well, a message exists */
01245             message_exists = 1;
01246             cmd = 0;
01247          }
01248          break;
01249       case '4':
01250       case '5':
01251       case '6':
01252       case '7':
01253       case '8':
01254       case '9':
01255       case '*':
01256       case '#':
01257          cmd = ast_play_and_wait(chan, "vm-sorry");
01258          break;
01259       default:
01260          if (message_exists) {
01261             cmd = ast_play_and_wait(chan, "vm-review");
01262          }
01263          else {
01264             cmd = ast_play_and_wait(chan, "vm-torerecord");
01265             if (!cmd)
01266                cmd = ast_waitfordigit(chan, 600);
01267          }
01268          
01269          if (!cmd)
01270             cmd = ast_waitfordigit(chan, 6000);
01271          if (!cmd) {
01272             attempts++;
01273          }
01274          if (attempts > max_attempts) {
01275             cmd = 't';
01276          }
01277       }
01278    }
01279    if (cmd == 't')
01280       cmd = 0;
01281    return cmd;
01282 }
01283 
01284 #define RES_UPONE (1 << 16)
01285 #define RES_EXIT  (1 << 17)
01286 #define RES_REPEAT (1 << 18)
01287 #define RES_RESTART ((1 << 19) | RES_REPEAT)
01288 
01289 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata);
01290 static int ivr_dispatch(struct ast_channel *chan, struct ast_ivr_option *option, char *exten, void *cbdata)
01291 {
01292    int res;
01293    int (*ivr_func)(struct ast_channel *, void *);
01294    char *c;
01295    char *n;
01296    
01297    switch(option->action) {
01298    case AST_ACTION_UPONE:
01299       return RES_UPONE;
01300    case AST_ACTION_EXIT:
01301       return RES_EXIT | (((unsigned long)(option->adata)) & 0xffff);
01302    case AST_ACTION_REPEAT:
01303       return RES_REPEAT | (((unsigned long)(option->adata)) & 0xffff);
01304    case AST_ACTION_RESTART:
01305       return RES_RESTART ;
01306    case AST_ACTION_NOOP:
01307       return 0;
01308    case AST_ACTION_BACKGROUND:
01309       res = ast_streamfile(chan, (char *)option->adata, chan->language);
01310       if (!res) {
01311          res = ast_waitstream(chan, AST_DIGIT_ANY);
01312       } else {
01313          ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
01314          res = 0;
01315       }
01316       return res;
01317    case AST_ACTION_PLAYBACK:
01318       res = ast_streamfile(chan, (char *)option->adata, chan->language);
01319       if (!res) {
01320          res = ast_waitstream(chan, "");
01321       } else {
01322          ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
01323          res = 0;
01324       }
01325       return res;
01326    case AST_ACTION_MENU:
01327       res = ast_ivr_menu_run_internal(chan, (struct ast_ivr_menu *)option->adata, cbdata);
01328       /* Do not pass entry errors back up, treaat ast though ti was an "UPONE" */
01329       if (res == -2)
01330          res = 0;
01331       return res;
01332    case AST_ACTION_WAITOPTION:
01333       res = ast_waitfordigit(chan, 1000 * (chan->pbx ? chan->pbx->rtimeout : 10));
01334       if (!res)
01335          return 't';
01336       return res;
01337    case AST_ACTION_CALLBACK:
01338       ivr_func = option->adata;
01339       res = ivr_func(chan, cbdata);
01340       return res;
01341    case AST_ACTION_TRANSFER:
01342       res = ast_parseable_goto(chan, option->adata);
01343       return 0;
01344    case AST_ACTION_PLAYLIST:
01345    case AST_ACTION_BACKLIST:
01346       res = 0;
01347       c = ast_strdupa(option->adata);
01348       if (c) {
01349          while((n = strsep(&c, ";")))
01350             if ((res = ast_streamfile(chan, n, chan->language)) || (res = ast_waitstream(chan, (option->action == AST_ACTION_BACKLIST) ? AST_DIGIT_ANY : "")))
01351                break;
01352          ast_stopstream(chan);
01353       }
01354       return res;
01355    default:
01356       ast_log(LOG_NOTICE, "Unknown dispatch function %d, ignoring!\n", option->action);
01357       return 0;
01358    };
01359    return -1;
01360 }
01361 
01362 static int option_exists(struct ast_ivr_menu *menu, char *option)
01363 {
01364    int x;
01365    for (x=0;menu->options[x].option;x++)
01366       if (!strcasecmp(menu->options[x].option, option))
01367          return x;
01368    return -1;
01369 }
01370 
01371 static int option_matchmore(struct ast_ivr_menu *menu, char *option)
01372 {
01373    int x;
01374    for (x=0;menu->options[x].option;x++)
01375       if ((!strncasecmp(menu->options[x].option, option, strlen(option))) && 
01376             (menu->options[x].option[strlen(option)]))
01377          return x;
01378    return -1;
01379 }
01380 
01381 static int read_newoption(struct ast_channel *chan, struct ast_ivr_menu *menu, char *exten, int maxexten)
01382 {
01383    int res=0;
01384    int ms;
01385    while(option_matchmore(menu, exten)) {
01386       ms = chan->pbx ? chan->pbx->dtimeout : 5000;
01387       if (strlen(exten) >= maxexten - 1) 
01388          break;
01389       res = ast_waitfordigit(chan, ms);
01390       if (res < 1)
01391          break;
01392       exten[strlen(exten) + 1] = '\0';
01393       exten[strlen(exten)] = res;
01394    }
01395    return res > 0 ? 0 : res;
01396 }
01397 
01398 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
01399 {
01400    /* Execute an IVR menu structure */
01401    int res=0;
01402    int pos = 0;
01403    int retries = 0;
01404    char exten[AST_MAX_EXTENSION] = "s";
01405    if (option_exists(menu, "s") < 0) {
01406       strcpy(exten, "g");
01407       if (option_exists(menu, "g") < 0) {
01408          ast_log(LOG_WARNING, "No 's' nor 'g' extension in menu '%s'!\n", menu->title);
01409          return -1;
01410       }
01411    }
01412    while(!res) {
01413       while(menu->options[pos].option) {
01414          if (!strcasecmp(menu->options[pos].option, exten)) {
01415             res = ivr_dispatch(chan, menu->options + pos, exten, cbdata);
01416             ast_log(LOG_DEBUG, "IVR Dispatch of '%s' (pos %d) yields %d\n", exten, pos, res);
01417             if (res < 0)
01418                break;
01419             else if (res & RES_UPONE)
01420                return 0;
01421             else if (res & RES_EXIT)
01422                return res;
01423             else if (res & RES_REPEAT) {
01424                int maxretries = res & 0xffff;
01425                if ((res & RES_RESTART) == RES_RESTART) {
01426                   retries = 0;
01427                } else
01428                   retries++;
01429                if (!maxretries)
01430                   maxretries = 3;
01431                if ((maxretries > 0) && (retries >= maxretries)) {
01432                   ast_log(LOG_DEBUG, "Max retries %d exceeded\n", maxretries);
01433                   return -2;
01434                } else {
01435                   if (option_exists(menu, "g") > -1) 
01436                      strcpy(exten, "g");
01437                   else if (option_exists(menu, "s") > -1)
01438                      strcpy(exten, "s");
01439                }
01440                pos=0;
01441                continue;
01442             } else if (res && strchr(AST_DIGIT_ANY, res)) {
01443                ast_log(LOG_DEBUG, "Got start of extension, %c\n", res);
01444                exten[1] = '\0';
01445                exten[0] = res;
01446                if ((res = read_newoption(chan, menu, exten, sizeof(exten))))
01447                   break;
01448                if (option_exists(menu, exten) < 0) {
01449                   if (option_exists(menu, "i")) {
01450                      ast_log(LOG_DEBUG, "Invalid extension entered, going to 'i'!\n");
01451                      strcpy(exten, "i");
01452                      pos = 0;
01453                      continue;
01454                   } else {
01455                      ast_log(LOG_DEBUG, "Aborting on invalid entry, with no 'i' option!\n");
01456                      res = -2;
01457                      break;
01458                   }
01459                } else {
01460                   ast_log(LOG_DEBUG, "New existing extension: %s\n", exten);
01461                   pos = 0;
01462                   continue;
01463                }
01464             }
01465          }
01466          pos++;
01467       }
01468       ast_log(LOG_DEBUG, "Stopping option '%s', res is %d\n", exten, res);
01469       pos = 0;
01470       if (!strcasecmp(exten, "s"))
01471          strcpy(exten, "g");
01472       else
01473          break;
01474    }
01475    return res;
01476 }
01477 
01478 int ast_ivr_menu_run(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
01479 {
01480    int res;
01481    res = ast_ivr_menu_run_internal(chan, menu, cbdata);
01482    /* Hide internal coding */
01483    if (res > 0)
01484       res = 0;
01485    return res;
01486 }
01487    
01488 char *ast_read_textfile(const char *filename)
01489 {
01490    int fd;
01491    char *output=NULL;
01492    struct stat filesize;
01493    int count=0;
01494    int res;
01495    if(stat(filename,&filesize)== -1){
01496       ast_log(LOG_WARNING,"Error can't stat %s\n", filename);
01497       return NULL;
01498    }
01499    count=filesize.st_size + 1;
01500    fd = open(filename, O_RDONLY);
01501    if (fd < 0) {
01502       ast_log(LOG_WARNING, "Cannot open file '%s' for reading: %s\n", filename, strerror(errno));
01503       return NULL;
01504    }
01505    output=(char *)malloc(count);
01506    if (output) {
01507       res = read(fd, output, count - 1);
01508       if (res == count - 1) {
01509          output[res] = '\0';
01510       } else {
01511          ast_log(LOG_WARNING, "Short read of %s (%d of %d): %s\n", filename, res, count -  1, strerror(errno));
01512          free(output);
01513          output = NULL;
01514       }
01515    } else 
01516       ast_log(LOG_WARNING, "Out of memory!\n");
01517    close(fd);
01518    return output;
01519 }
01520 
01521 int ast_app_parse_options(const struct ast_app_option *options, struct ast_flags *flags, char **args, char *optstr)
01522 {
01523    char *s;
01524    int curarg;
01525    unsigned int argloc;
01526    char *arg;
01527    int res = 0;
01528 
01529    ast_clear_flag(flags, AST_FLAGS_ALL);
01530 
01531    if (!optstr)
01532       return 0;
01533 
01534    s = optstr;
01535    while (*s) {
01536       curarg = *s++ & 0x7f;
01537       ast_set_flag(flags, options[curarg].flag);
01538       argloc = options[curarg].arg_index;
01539       if (*s == '(') {
01540          /* Has argument */
01541          arg = ++s;
01542          while (*s && (*s != ')'))
01543             s++;
01544          if (*s) {
01545             if (argloc)
01546                args[argloc - 1] = arg;
01547             *s++ = '\0';
01548          } else {
01549             ast_log(LOG_WARNING, "Missing closing parenthesis for argument '%c' in string '%s'\n", curarg, arg);
01550             res = -1;
01551          }
01552       } else if (argloc) {
01553          args[argloc - 1] = NULL;
01554       }
01555    }
01556 
01557    return res;
01558 }

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