Fri May 26 01:45:26 2006

Asterisk developer's documentation


app.c

Go to the documentation of this file.
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: 19008 $")
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 rfmt=0;
00555    struct ast_silence_generator *silgen = NULL;
00556 
00557    if (silencethreshold < 0)
00558       silencethreshold = global_silence_threshold;
00559 
00560    if (maxsilence < 0)
00561       maxsilence = global_maxsilence;
00562 
00563    /* barf if no pointer passed to store duration in */
00564    if (duration == NULL) {
00565       ast_log(LOG_WARNING, "Error play_and_record called without duration pointer\n");
00566       return -1;
00567    }
00568 
00569    ast_log(LOG_DEBUG,"play_and_record: %s, %s, '%s'\n", playfile ? playfile : "<None>", recordfile, fmt);
00570    snprintf(comment,sizeof(comment),"Playing %s, Recording to: %s on %s\n", playfile ? playfile : "<None>", recordfile, chan->name);
00571 
00572    if (playfile) {
00573       d = ast_play_and_wait(chan, playfile);
00574       if (d > -1)
00575          d = ast_streamfile(chan, "beep",chan->language);
00576       if (!d)
00577          d = ast_waitstream(chan,"");
00578       if (d < 0)
00579          return -1;
00580    }
00581 
00582    fmts = ast_strdupa(fmt);
00583 
00584    stringp=fmts;
00585    strsep(&stringp, "|");
00586    ast_log(LOG_DEBUG,"Recording Formats: sfmts=%s\n", fmts);
00587    sfmt[0] = ast_strdupa(fmts);
00588 
00589    while((fmt = strsep(&stringp, "|"))) {
00590       if (fmtcnt > MAX_OTHER_FORMATS - 1) {
00591          ast_log(LOG_WARNING, "Please increase MAX_OTHER_FORMATS in app.c\n");
00592          break;
00593       }
00594       sfmt[fmtcnt++] = ast_strdupa(fmt);
00595    }
00596 
00597    time(&start);
00598    end=start;  /* pre-initialize end to be same as start in case we never get into loop */
00599    for (x=0;x<fmtcnt;x++) {
00600       others[x] = ast_writefile(recordfile, sfmt[x], comment, O_TRUNC, 0, 0700);
00601       ast_verbose( VERBOSE_PREFIX_3 "x=%d, open writing:  %s format: %s, %p\n", x, recordfile, sfmt[x], others[x]);
00602 
00603       if (!others[x]) {
00604          break;
00605       }
00606    }
00607 
00608    if (path)
00609       ast_unlock_path(path);
00610 
00611    if (maxsilence > 0) {
00612       sildet = ast_dsp_new(); /* Create the silence detector */
00613       if (!sildet) {
00614          ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
00615          return -1;
00616       }
00617       ast_dsp_set_threshold(sildet, silencethreshold);
00618       rfmt = chan->readformat;
00619       res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
00620       if (res < 0) {
00621          ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
00622          ast_dsp_free(sildet);
00623          return -1;
00624       }
00625    }
00626 
00627    /* Request a video update */
00628    ast_indicate(chan, AST_CONTROL_VIDUPDATE);
00629 
00630    if (option_transmit_silence_during_record)
00631       silgen = ast_channel_start_silence_generator(chan);
00632 
00633    if (x == fmtcnt) {
00634    /* Loop forever, writing the packets we read to the writer(s), until
00635       we read a # or get a hangup */
00636       f = NULL;
00637       for(;;) {
00638          res = ast_waitfor(chan, 2000);
00639          if (!res) {
00640             ast_log(LOG_DEBUG, "One waitfor failed, trying another\n");
00641             /* Try one more time in case of masq */
00642             res = ast_waitfor(chan, 2000);
00643             if (!res) {
00644                ast_log(LOG_WARNING, "No audio available on %s??\n", chan->name);
00645                res = -1;
00646             }
00647          }
00648 
00649          if (res < 0) {
00650             f = NULL;
00651             break;
00652          }
00653          f = ast_read(chan);
00654          if (!f)
00655             break;
00656          if (f->frametype == AST_FRAME_VOICE) {
00657             /* write each format */
00658             for (x=0;x<fmtcnt;x++) {
00659                res = ast_writestream(others[x], f);
00660             }
00661 
00662             /* Silence Detection */
00663             if (maxsilence > 0) {
00664                dspsilence = 0;
00665                ast_dsp_silence(sildet, f, &dspsilence);
00666                if (dspsilence)
00667                   totalsilence = dspsilence;
00668                else
00669                   totalsilence = 0;
00670 
00671                if (totalsilence > maxsilence) {
00672                   /* Ended happily with silence */
00673                   if (option_verbose > 2)
00674                      ast_verbose( VERBOSE_PREFIX_3 "Recording automatically stopped after a silence of %d seconds\n", totalsilence/1000);
00675                   ast_frfree(f);
00676                   res = 'S';
00677                   outmsg=2;
00678                   break;
00679                }
00680             }
00681             /* Exit on any error */
00682             if (res) {
00683                ast_log(LOG_WARNING, "Error writing frame\n");
00684                ast_frfree(f);
00685                break;
00686             }
00687          } else if (f->frametype == AST_FRAME_VIDEO) {
00688             /* Write only once */
00689             ast_writestream(others[0], f);
00690          } else if (f->frametype == AST_FRAME_DTMF) {
00691             if (f->subclass == '#') {
00692                if (option_verbose > 2)
00693                   ast_verbose( VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
00694                res = '#';
00695                outmsg = 2;
00696                ast_frfree(f);
00697                break;
00698             }
00699             if (f->subclass == '0') {
00700             /* Check for a '0' during message recording also, in case caller wants operator */
00701                if (option_verbose > 2)
00702                   ast_verbose(VERBOSE_PREFIX_3 "User cancelled by pressing %c\n", f->subclass);
00703                res = '0';
00704                outmsg = 0;
00705                ast_frfree(f);
00706                break;
00707             }
00708          }
00709          if (maxtime) {
00710             time(&end);
00711             if (maxtime < (end - start)) {
00712                if (option_verbose > 2)
00713                   ast_verbose( VERBOSE_PREFIX_3 "Took too long, cutting it short...\n");
00714                outmsg = 2;
00715                res = 't';
00716                ast_frfree(f);
00717                break;
00718             }
00719          }
00720          ast_frfree(f);
00721       }
00722       if (end == start) time(&end);
00723       if (!f) {
00724          if (option_verbose > 2)
00725             ast_verbose( VERBOSE_PREFIX_3 "User hung up\n");
00726          res = -1;
00727          outmsg=1;
00728       }
00729    } else {
00730       ast_log(LOG_WARNING, "Error creating writestream '%s', format '%s'\n", recordfile, sfmt[x]);
00731    }
00732 
00733    if (silgen)
00734       ast_channel_stop_silence_generator(chan, silgen);
00735 
00736    *duration = end - start;
00737 
00738    for (x=0;x<fmtcnt;x++) {
00739       if (!others[x])
00740          break;
00741       if (res > 0) {
00742          if (totalsilence)
00743             ast_stream_rewind(others[x], totalsilence-200);
00744          else
00745             ast_stream_rewind(others[x], 200);
00746       }
00747       ast_truncstream(others[x]);
00748       ast_closestream(others[x]);
00749    }
00750    if (rfmt) {
00751       if (ast_set_read_format(chan, rfmt)) {
00752          ast_log(LOG_WARNING, "Unable to restore format %s to channel '%s'\n", ast_getformatname(rfmt), chan->name);
00753       }
00754    }
00755    if (outmsg > 1) {
00756       /* Let them know recording is stopped */
00757       if(!ast_streamfile(chan, "auth-thankyou", chan->language))
00758          ast_waitstream(chan, "");
00759    }
00760    if (sildet)
00761       ast_dsp_free(sildet);
00762    return res;
00763 }
00764 
00765 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)
00766 {
00767    int d = 0;
00768    char *fmts;
00769    char comment[256];
00770    int x, fmtcnt=1, res=-1,outmsg=0;
00771    struct ast_frame *f;
00772    struct ast_filestream *others[MAX_OTHER_FORMATS];
00773    struct ast_filestream *realfiles[MAX_OTHER_FORMATS];
00774    char *sfmt[MAX_OTHER_FORMATS];
00775    char *stringp=NULL;
00776    time_t start, end;
00777    struct ast_dsp *sildet;    /* silence detector dsp */
00778    int totalsilence = 0;
00779    int dspsilence = 0;
00780    int rfmt=0; 
00781    char prependfile[80];
00782    
00783    if (silencethreshold < 0)
00784       silencethreshold = global_silence_threshold;
00785 
00786    if (maxsilence < 0)
00787       maxsilence = global_maxsilence;
00788 
00789    /* barf if no pointer passed to store duration in */
00790    if (duration == NULL) {
00791       ast_log(LOG_WARNING, "Error play_and_prepend called without duration pointer\n");
00792       return -1;
00793    }
00794 
00795    ast_log(LOG_DEBUG,"play_and_prepend: %s, %s, '%s'\n", playfile ? playfile : "<None>", recordfile, fmt);
00796    snprintf(comment,sizeof(comment),"Playing %s, Recording to: %s on %s\n", playfile ? playfile : "<None>", recordfile, chan->name);
00797 
00798    if (playfile || beep) { 
00799       if (!beep)
00800          d = ast_play_and_wait(chan, playfile);
00801       if (d > -1)
00802          d = ast_streamfile(chan, "beep",chan->language);
00803       if (!d)
00804          d = ast_waitstream(chan,"");
00805       if (d < 0)
00806          return -1;
00807    }
00808    ast_copy_string(prependfile, recordfile, sizeof(prependfile)); 
00809    strncat(prependfile, "-prepend", sizeof(prependfile) - strlen(prependfile) - 1);
00810          
00811    fmts = ast_strdupa(fmt);
00812    
00813    stringp=fmts;
00814    strsep(&stringp, "|");
00815    ast_log(LOG_DEBUG,"Recording Formats: sfmts=%s\n", fmts);   
00816    sfmt[0] = ast_strdupa(fmts);
00817    
00818    while((fmt = strsep(&stringp, "|"))) {
00819       if (fmtcnt > MAX_OTHER_FORMATS - 1) {
00820          ast_log(LOG_WARNING, "Please increase MAX_OTHER_FORMATS in app.c\n");
00821          break;
00822       }
00823       sfmt[fmtcnt++] = ast_strdupa(fmt);
00824    }
00825 
00826    time(&start);
00827    end=start;  /* pre-initialize end to be same as start in case we never get into loop */
00828    for (x=0;x<fmtcnt;x++) {
00829       others[x] = ast_writefile(prependfile, sfmt[x], comment, O_TRUNC, 0, 0700);
00830       ast_verbose( VERBOSE_PREFIX_3 "x=%d, open writing:  %s format: %s, %p\n", x, prependfile, sfmt[x], others[x]);
00831       if (!others[x]) {
00832          break;
00833       }
00834    }
00835    
00836    sildet = ast_dsp_new(); /* Create the silence detector */
00837    if (!sildet) {
00838       ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
00839       return -1;
00840    }
00841    ast_dsp_set_threshold(sildet, silencethreshold);
00842 
00843    if (maxsilence > 0) {
00844       rfmt = chan->readformat;
00845       res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
00846       if (res < 0) {
00847          ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
00848          ast_dsp_free(sildet);
00849          return -1;
00850       }
00851    }
00852                   
00853    if (x == fmtcnt) {
00854    /* Loop forever, writing the packets we read to the writer(s), until
00855       we read a # or get a hangup */
00856       f = NULL;
00857       for(;;) {
00858          res = ast_waitfor(chan, 2000);
00859          if (!res) {
00860             ast_log(LOG_DEBUG, "One waitfor failed, trying another\n");
00861             /* Try one more time in case of masq */
00862             res = ast_waitfor(chan, 2000);
00863             if (!res) {
00864                ast_log(LOG_WARNING, "No audio available on %s??\n", chan->name);
00865                res = -1;
00866             }
00867          }
00868          
00869          if (res < 0) {
00870             f = NULL;
00871             break;
00872          }
00873          f = ast_read(chan);
00874          if (!f)
00875             break;
00876          if (f->frametype == AST_FRAME_VOICE) {
00877             /* write each format */
00878             for (x=0;x<fmtcnt;x++) {
00879                if (!others[x])
00880                   break;
00881                res = ast_writestream(others[x], f);
00882             }
00883             
00884             /* Silence Detection */
00885             if (maxsilence > 0) {
00886                dspsilence = 0;
00887                ast_dsp_silence(sildet, f, &dspsilence);
00888                if (dspsilence)
00889                   totalsilence = dspsilence;
00890                else
00891                   totalsilence = 0;
00892                
00893                if (totalsilence > maxsilence) {
00894                /* Ended happily with silence */
00895                if (option_verbose > 2) 
00896                   ast_verbose( VERBOSE_PREFIX_3 "Recording automatically stopped after a silence of %d seconds\n", totalsilence/1000);
00897                ast_frfree(f);
00898                res = 'S';
00899                outmsg=2;
00900                break;
00901                }
00902             }
00903             /* Exit on any error */
00904             if (res) {
00905                ast_log(LOG_WARNING, "Error writing frame\n");
00906                ast_frfree(f);
00907                break;
00908             }
00909          } else if (f->frametype == AST_FRAME_VIDEO) {
00910             /* Write only once */
00911             ast_writestream(others[0], f);
00912          } else if (f->frametype == AST_FRAME_DTMF) {
00913             /* stop recording with any digit */
00914             if (option_verbose > 2) 
00915                ast_verbose( VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
00916             res = 't';
00917             outmsg = 2;
00918             ast_frfree(f);
00919             break;
00920          }
00921          if (maxtime) {
00922             time(&end);
00923             if (maxtime < (end - start)) {
00924                if (option_verbose > 2)
00925                   ast_verbose( VERBOSE_PREFIX_3 "Took too long, cutting it short...\n");
00926                res = 't';
00927                outmsg=2;
00928                ast_frfree(f);
00929                break;
00930             }
00931          }
00932          ast_frfree(f);
00933       }
00934       if (end == start) time(&end);
00935       if (!f) {
00936          if (option_verbose > 2) 
00937             ast_verbose( VERBOSE_PREFIX_3 "User hung up\n");
00938          res = -1;
00939          outmsg=1;
00940 #if 0
00941          /* delete all the prepend files */
00942          for (x=0;x<fmtcnt;x++) {
00943             if (!others[x])
00944                break;
00945             ast_closestream(others[x]);
00946             ast_filedelete(prependfile, sfmt[x]);
00947          }
00948 #endif
00949       }
00950    } else {
00951       ast_log(LOG_WARNING, "Error creating writestream '%s', format '%s'\n", prependfile, sfmt[x]); 
00952    }
00953    ast_dsp_free(sildet);
00954    *duration = end - start;
00955 #if 0
00956    if (outmsg > 1) {
00957 #else
00958    if (outmsg) {
00959 #endif
00960       struct ast_frame *fr;
00961       for (x=0;x<fmtcnt;x++) {
00962          snprintf(comment, sizeof(comment), "Opening the real file %s.%s\n", recordfile, sfmt[x]);
00963          realfiles[x] = ast_readfile(recordfile, sfmt[x], comment, O_RDONLY, 0, 0);
00964          if (!others[x] || !realfiles[x])
00965             break;
00966          if (totalsilence)
00967             ast_stream_rewind(others[x], totalsilence-200);
00968          else
00969             ast_stream_rewind(others[x], 200);
00970          ast_truncstream(others[x]);
00971          /* add the original file too */
00972          while ((fr = ast_readframe(realfiles[x]))) {
00973             ast_writestream(others[x],fr);
00974          }
00975          ast_closestream(others[x]);
00976          ast_closestream(realfiles[x]);
00977          ast_filerename(prependfile, recordfile, sfmt[x]);
00978 #if 0
00979          ast_verbose("Recording Format: sfmts=%s, prependfile %s, recordfile %s\n", sfmt[x],prependfile,recordfile);
00980 #endif
00981          ast_filedelete(prependfile, sfmt[x]);
00982       }
00983    }
00984    if (rfmt) {
00985       if (ast_set_read_format(chan, rfmt)) {
00986          ast_log(LOG_WARNING, "Unable to restore format %s to channel '%s'\n", ast_getformatname(rfmt), chan->name);
00987       }
00988    }
00989    if (outmsg) {
00990       if (outmsg > 1) {
00991          /* Let them know it worked */
00992          ast_streamfile(chan, "auth-thankyou", chan->language);
00993          ast_waitstream(chan, "");
00994       }
00995    }  
00996    return res;
00997 }
00998 
00999 /* Channel group core functions */
01000 
01001 int ast_app_group_split_group(char *data, char *group, int group_max, char *category, int category_max)
01002 {
01003    int res=0;
01004    char tmp[256];
01005    char *grp=NULL, *cat=NULL;
01006 
01007    if (!ast_strlen_zero(data)) {
01008       ast_copy_string(tmp, data, sizeof(tmp));
01009       grp = tmp;
01010       cat = strchr(tmp, '@');
01011       if (cat) {
01012          *cat = '\0';
01013          cat++;
01014       }
01015    }
01016 
01017    if (!ast_strlen_zero(grp))
01018       ast_copy_string(group, grp, group_max);
01019    else
01020       res = -1;
01021 
01022    if (cat)
01023       snprintf(category, category_max, "%s_%s", GROUP_CATEGORY_PREFIX, cat);
01024    else
01025       ast_copy_string(category, GROUP_CATEGORY_PREFIX, category_max);
01026 
01027    return res;
01028 }
01029 
01030 int ast_app_group_set_channel(struct ast_channel *chan, char *data)
01031 {
01032    int res=0;
01033    char group[80] = "";
01034    char category[80] = "";
01035 
01036    if (!ast_app_group_split_group(data, group, sizeof(group), category, sizeof(category))) {
01037       pbx_builtin_setvar_helper(chan, category, group);
01038    } else
01039       res = -1;
01040 
01041    return res;
01042 }
01043 
01044 int ast_app_group_get_count(char *group, char *category)
01045 {
01046    struct ast_channel *chan;
01047    int count = 0;
01048    char *test;
01049    char cat[80];
01050    char *s;
01051 
01052    if (ast_strlen_zero(group))
01053       return 0;
01054 
01055    s = (!ast_strlen_zero(category)) ? category : GROUP_CATEGORY_PREFIX;
01056    ast_copy_string(cat, s, sizeof(cat));
01057 
01058    chan = NULL;
01059    while ((chan = ast_channel_walk_locked(chan)) != NULL) {
01060       test = pbx_builtin_getvar_helper(chan, cat);
01061       if (test && !strcasecmp(test, group))
01062          count++;
01063       ast_mutex_unlock(&chan->lock);
01064    }
01065 
01066    return count;
01067 }
01068 
01069 int ast_app_group_match_get_count(char *groupmatch, char *category)
01070 {
01071    regex_t regexbuf;
01072    struct ast_channel *chan;
01073    int count = 0;
01074    char *test;
01075    char cat[80];
01076    char *s;
01077 
01078    if (ast_strlen_zero(groupmatch))
01079       return 0;
01080 
01081    /* if regex compilation fails, return zero matches */
01082    if (regcomp(&regexbuf, groupmatch, REG_EXTENDED | REG_NOSUB))
01083       return 0;
01084 
01085    s = (!ast_strlen_zero(category)) ? category : GROUP_CATEGORY_PREFIX;
01086    ast_copy_string(cat, s, sizeof(cat));
01087 
01088    chan = NULL;
01089    while ((chan = ast_channel_walk_locked(chan)) != NULL) {
01090       test = pbx_builtin_getvar_helper(chan, cat);
01091       if (test && !regexec(&regexbuf, test, 0, NULL, 0))
01092          count++;
01093       ast_mutex_unlock(&chan->lock);
01094    }
01095 
01096    regfree(&regexbuf);
01097 
01098    return count;
01099 }
01100 
01101 unsigned int ast_app_separate_args(char *buf, char delim, char **array, int arraylen)
01102 {
01103    int argc;
01104    char *scan;
01105    int paren = 0;
01106 
01107    if (!buf || !array || !arraylen)
01108       return 0;
01109 
01110    memset(array, 0, arraylen * sizeof(*array));
01111 
01112    scan = buf;
01113 
01114    for (argc = 0; *scan && (argc < arraylen - 1); argc++) {
01115       array[argc] = scan;
01116       for (; *scan; scan++) {
01117          if (*scan == '(')
01118             paren++;
01119          else if (*scan == ')') {
01120             if (paren)
01121                paren--;
01122          } else if ((*scan == delim) && !paren) {
01123             *scan++ = '\0';
01124             break;
01125          }
01126       }
01127    }
01128 
01129    if (*scan)
01130       array[argc++] = scan;
01131 
01132    return argc;
01133 }
01134 
01135 enum AST_LOCK_RESULT ast_lock_path(const char *path)
01136 {
01137    char *s;
01138    char *fs;
01139    int res;
01140    int fd;
01141    time_t start;
01142 
01143    s = alloca(strlen(path) + 10);
01144    fs = alloca(strlen(path) + 20);
01145 
01146    if (!fs || !s) {
01147       ast_log(LOG_WARNING, "Out of memory!\n");
01148       return AST_LOCK_FAILURE;
01149    }
01150 
01151    snprintf(fs, strlen(path) + 19, "%s/.lock-%08x", path, rand());
01152    fd = open(fs, O_WRONLY | O_CREAT | O_EXCL, 0600);
01153    if (fd < 0) {
01154       fprintf(stderr, "Unable to create lock file '%s': %s\n", path, strerror(errno));
01155       return AST_LOCK_PATH_NOT_FOUND;
01156    }
01157    close(fd);
01158 
01159    snprintf(s, strlen(path) + 9, "%s/.lock", path);
01160    time(&start);
01161    while (((res = link(fs, s)) < 0) && (errno == EEXIST) && (time(NULL) - start < 5))
01162       usleep(1);
01163    if (res) {
01164       ast_log(LOG_WARNING, "Failed to lock path '%s': %s\n", path, strerror(errno));
01165       return AST_LOCK_TIMEOUT;
01166    } else {
01167       unlink(fs);
01168       ast_log(LOG_DEBUG, "Locked path '%s'\n", path);
01169       return AST_LOCK_SUCCESS;
01170    }
01171 }
01172 
01173 int ast_unlock_path(const char *path)
01174 {
01175    char *s;
01176    s = alloca(strlen(path) + 10);
01177    if (!s)
01178       return -1;
01179    snprintf(s, strlen(path) + 9, "%s/%s", path, ".lock");
01180    ast_log(LOG_DEBUG, "Unlocked path '%s'\n", path);
01181    return unlink(s);
01182 }
01183 
01184 int ast_record_review(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, const char *path) 
01185 {
01186    int silencethreshold = 128; 
01187    int maxsilence=0;
01188    int res = 0;
01189    int cmd = 0;
01190    int max_attempts = 3;
01191    int attempts = 0;
01192    int recorded = 0;
01193    int message_exists = 0;
01194    /* Note that urgent and private are for flagging messages as such in the future */
01195 
01196    /* barf if no pointer passed to store duration in */
01197    if (duration == NULL) {
01198       ast_log(LOG_WARNING, "Error ast_record_review called without duration pointer\n");
01199       return -1;
01200    }
01201 
01202    cmd = '3';   /* Want to start by recording */
01203 
01204    while ((cmd >= 0) && (cmd != 't')) {
01205       switch (cmd) {
01206       case '1':
01207          if (!message_exists) {
01208             /* In this case, 1 is to record a message */
01209             cmd = '3';
01210             break;
01211          } else {
01212             ast_streamfile(chan, "vm-msgsaved", chan->language);
01213             ast_waitstream(chan, "");
01214             cmd = 't';
01215             return res;
01216          }
01217       case '2':
01218          /* Review */
01219          ast_verbose(VERBOSE_PREFIX_3 "Reviewing the recording\n");
01220          ast_streamfile(chan, recordfile, chan->language);
01221          cmd = ast_waitstream(chan, AST_DIGIT_ANY);
01222          break;
01223       case '3':
01224          message_exists = 0;
01225          /* Record */
01226          if (recorded == 1)
01227             ast_verbose(VERBOSE_PREFIX_3 "Re-recording\n");
01228          else  
01229             ast_verbose(VERBOSE_PREFIX_3 "Recording\n");
01230          recorded = 1;
01231          cmd = ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, silencethreshold, maxsilence, path);
01232          if (cmd == -1) {
01233          /* User has hung up, no options to give */
01234             return cmd;
01235          }
01236          if (cmd == '0') {
01237             break;
01238          } else if (cmd == '*') {
01239             break;
01240          } 
01241          else {
01242             /* If all is well, a message exists */
01243             message_exists = 1;
01244             cmd = 0;
01245          }
01246          break;
01247       case '4':
01248       case '5':
01249       case '6':
01250       case '7':
01251       case '8':
01252       case '9':
01253       case '*':
01254       case '#':
01255          cmd = ast_play_and_wait(chan, "vm-sorry");
01256          break;
01257       default:
01258          if (message_exists) {
01259             cmd = ast_play_and_wait(chan, "vm-review");
01260          }
01261          else {
01262             cmd = ast_play_and_wait(chan, "vm-torerecord");
01263             if (!cmd)
01264                cmd = ast_waitfordigit(chan, 600);
01265          }
01266          
01267          if (!cmd)
01268             cmd = ast_waitfordigit(chan, 6000);
01269          if (!cmd) {
01270             attempts++;
01271          }
01272          if (attempts > max_attempts) {
01273             cmd = 't';
01274          }
01275       }
01276    }
01277    if (cmd == 't')
01278       cmd = 0;
01279    return cmd;
01280 }
01281 
01282 #define RES_UPONE (1 << 16)
01283 #define RES_EXIT  (1 << 17)
01284 #define RES_REPEAT (1 << 18)
01285 #define RES_RESTART ((1 << 19) | RES_REPEAT)
01286 
01287 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata);
01288 static int ivr_dispatch(struct ast_channel *chan, struct ast_ivr_option *option, char *exten, void *cbdata)
01289 {
01290    int res;
01291    int (*ivr_func)(struct ast_channel *, void *);
01292    char *c;
01293    char *n;
01294    
01295    switch(option->action) {
01296    case AST_ACTION_UPONE:
01297       return RES_UPONE;
01298    case AST_ACTION_EXIT:
01299       return RES_EXIT | (((unsigned long)(option->adata)) & 0xffff);
01300    case AST_ACTION_REPEAT:
01301       return RES_REPEAT | (((unsigned long)(option->adata)) & 0xffff);
01302    case AST_ACTION_RESTART:
01303       return RES_RESTART ;
01304    case AST_ACTION_NOOP:
01305       return 0;
01306    case AST_ACTION_BACKGROUND:
01307       res = ast_streamfile(chan, (char *)option->adata, chan->language);
01308       if (!res) {
01309          res = ast_waitstream(chan, AST_DIGIT_ANY);
01310       } else {
01311          ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
01312          res = 0;
01313       }
01314       return res;
01315    case AST_ACTION_PLAYBACK:
01316       res = ast_streamfile(chan, (char *)option->adata, chan->language);
01317       if (!res) {
01318          res = ast_waitstream(chan, "");
01319       } else {
01320          ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
01321          res = 0;
01322       }
01323       return res;
01324    case AST_ACTION_MENU:
01325       res = ast_ivr_menu_run_internal(chan, (struct ast_ivr_menu *)option->adata, cbdata);
01326       /* Do not pass entry errors back up, treaat ast though ti was an "UPONE" */
01327       if (res == -2)
01328          res = 0;
01329       return res;
01330    case AST_ACTION_WAITOPTION:
01331       res = ast_waitfordigit(chan, 1000 * (chan->pbx ? chan->pbx->rtimeout : 10));
01332       if (!res)
01333          return 't';
01334       return res;
01335    case AST_ACTION_CALLBACK:
01336       ivr_func = option->adata;
01337       res = ivr_func(chan, cbdata);
01338       return res;
01339    case AST_ACTION_TRANSFER:
01340       res = ast_parseable_goto(chan, option->adata);
01341       return 0;
01342    case AST_ACTION_PLAYLIST:
01343    case AST_ACTION_BACKLIST:
01344       res = 0;
01345       c = ast_strdupa(option->adata);
01346       if (c) {
01347          while((n = strsep(&c, ";")))
01348             if ((res = ast_streamfile(chan, n, chan->language)) || (res = ast_waitstream(chan, (option->action == AST_ACTION_BACKLIST) ? AST_DIGIT_ANY : "")))
01349                break;
01350          ast_stopstream(chan);
01351       }
01352       return res;
01353    default:
01354       ast_log(LOG_NOTICE, "Unknown dispatch function %d, ignoring!\n", option->action);
01355       return 0;
01356    };
01357    return -1;
01358 }
01359 
01360 static int option_exists(struct ast_ivr_menu *menu, char *option)
01361 {
01362    int x;
01363    for (x=0;menu->options[x].option;x++)
01364       if (!strcasecmp(menu->options[x].option, option))
01365          return x;
01366    return -1;
01367 }
01368 
01369 static int option_matchmore(struct ast_ivr_menu *menu, char *option)
01370 {
01371    int x;
01372    for (x=0;menu->options[x].option;x++)
01373       if ((!strncasecmp(menu->options[x].option, option, strlen(option))) && 
01374             (menu->options[x].option[strlen(option)]))
01375          return x;
01376    return -1;
01377 }
01378 
01379 static int read_newoption(struct ast_channel *chan, struct ast_ivr_menu *menu, char *exten, int maxexten)
01380 {
01381    int res=0;
01382    int ms;
01383    while(option_matchmore(menu, exten)) {
01384       ms = chan->pbx ? chan->pbx->dtimeout : 5000;
01385       if (strlen(exten) >= maxexten - 1) 
01386          break;
01387       res = ast_waitfordigit(chan, ms);
01388       if (res < 1)
01389          break;
01390       exten[strlen(exten) + 1] = '\0';
01391       exten[strlen(exten)] = res;
01392    }
01393    return res > 0 ? 0 : res;
01394 }
01395 
01396 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
01397 {
01398    /* Execute an IVR menu structure */
01399    int res=0;
01400    int pos = 0;
01401    int retries = 0;
01402    char exten[AST_MAX_EXTENSION] = "s";
01403    if (option_exists(menu, "s") < 0) {
01404       strcpy(exten, "g");
01405       if (option_exists(menu, "g") < 0) {
01406          ast_log(LOG_WARNING, "No 's' nor 'g' extension in menu '%s'!\n", menu->title);
01407          return -1;
01408       }
01409    }
01410    while(!res) {
01411       while(menu->options[pos].option) {
01412          if (!strcasecmp(menu->options[pos].option, exten)) {
01413             res = ivr_dispatch(chan, menu->options + pos, exten, cbdata);
01414             ast_log(LOG_DEBUG, "IVR Dispatch of '%s' (pos %d) yields %d\n", exten, pos, res);
01415             if (res < 0)
01416                break;
01417             else if (res & RES_UPONE)
01418                return 0;
01419             else if (res & RES_EXIT)
01420                return res;
01421             else if (res & RES_REPEAT) {
01422                int maxretries = res & 0xffff;
01423                if ((res & RES_RESTART) == RES_RESTART) {
01424                   retries = 0;
01425                } else
01426                   retries++;
01427                if (!maxretries)
01428                   maxretries = 3;
01429                if ((maxretries > 0) && (retries >= maxretries)) {
01430                   ast_log(LOG_DEBUG, "Max retries %d exceeded\n", maxretries);
01431                   return -2;
01432                } else {
01433                   if (option_exists(menu, "g") > -1) 
01434                      strcpy(exten, "g");
01435                   else if (option_exists(menu, "s") > -1)
01436                      strcpy(exten, "s");
01437                }
01438                pos=0;
01439                continue;
01440             } else if (res && strchr(AST_DIGIT_ANY, res)) {
01441                ast_log(LOG_DEBUG, "Got start of extension, %c\n", res);
01442                exten[1] = '\0';
01443                exten[0] = res;
01444                if ((res = read_newoption(chan, menu, exten, sizeof(exten))))
01445                   break;
01446                if (option_exists(menu, exten) < 0) {
01447                   if (option_exists(menu, "i")) {
01448                      ast_log(LOG_DEBUG, "Invalid extension entered, going to 'i'!\n");
01449                      strcpy(exten, "i");
01450                      pos = 0;
01451                      continue;
01452                   } else {
01453                      ast_log(LOG_DEBUG, "Aborting on invalid entry, with no 'i' option!\n");
01454                      res = -2;
01455                      break;
01456                   }
01457                } else {
01458                   ast_log(LOG_DEBUG, "New existing extension: %s\n", exten);
01459                   pos = 0;
01460                   continue;
01461                }
01462             }
01463          }
01464          pos++;
01465       }
01466       ast_log(LOG_DEBUG, "Stopping option '%s', res is %d\n", exten, res);
01467       pos = 0;
01468       if (!strcasecmp(exten, "s"))
01469          strcpy(exten, "g");
01470       else
01471          break;
01472    }
01473    return res;
01474 }
01475 
01476 int ast_ivr_menu_run(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
01477 {
01478    int res;
01479    res = ast_ivr_menu_run_internal(chan, menu, cbdata);
01480    /* Hide internal coding */
01481    if (res > 0)
01482       res = 0;
01483    return res;
01484 }
01485    
01486 char *ast_read_textfile(const char *filename)
01487 {
01488    int fd;
01489    char *output=NULL;
01490    struct stat filesize;
01491    int count=0;
01492    int res;
01493    if(stat(filename,&filesize)== -1){
01494       ast_log(LOG_WARNING,"Error can't stat %s\n", filename);
01495       return NULL;
01496    }
01497    count=filesize.st_size + 1;
01498    fd = open(filename, O_RDONLY);
01499    if (fd < 0) {
01500       ast_log(LOG_WARNING, "Cannot open file '%s' for reading: %s\n", filename, strerror(errno));
01501       return NULL;
01502    }
01503    output=(char *)malloc(count);
01504    if (output) {
01505       res = read(fd, output, count - 1);
01506       if (res == count - 1) {
01507          output[res] = '\0';
01508       } else {
01509          ast_log(LOG_WARNING, "Short read of %s (%d of %d): %s\n", filename, res, count -  1, strerror(errno));
01510          free(output);
01511          output = NULL;
01512       }
01513    } else 
01514       ast_log(LOG_WARNING, "Out of memory!\n");
01515    close(fd);
01516    return output;
01517 }
01518 
01519 int ast_app_parse_options(const struct ast_app_option *options, struct ast_flags *flags, char **args, char *optstr)
01520 {
01521    char *s;
01522    int curarg;
01523    unsigned int argloc;
01524    char *arg;
01525    int res = 0;
01526 
01527    ast_clear_flag(flags, AST_FLAGS_ALL);
01528 
01529    if (!optstr)
01530       return 0;
01531 
01532    s = optstr;
01533    while (*s) {
01534       curarg = *s++ & 0x7f;
01535       ast_set_flag(flags, options[curarg].flag);
01536       argloc = options[curarg].arg_index;
01537       if (*s == '(') {
01538          /* Has argument */
01539          arg = ++s;
01540          while (*s && (*s != ')'))
01541             s++;
01542          if (*s) {
01543             if (argloc)
01544                args[argloc - 1] = arg;
01545             *s++ = '\0';
01546          } else {
01547             ast_log(LOG_WARNING, "Missing closing parenthesis for argument '%c' in string '%s'\n", curarg, arg);
01548             res = -1;
01549          }
01550       } else if (argloc) {
01551          args[argloc - 1] = NULL;
01552       }
01553    }
01554 
01555    return res;
01556 }

Generated on Fri May 26 01:45:26 2006 for Asterisk - the Open Source PBX by  doxygen 1.4.6