Mon May 14 04:42:52 2007

Asterisk developer's documentation


app.c

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00001 /*
00002  * Asterisk -- An open source telephony toolkit.
00003  *
00004  * Copyright (C) 1999 - 2005, Digium, Inc.
00005  *
00006  * Mark Spencer <markster@digium.com>
00007  *
00008  * See http://www.asterisk.org for more information about
00009  * the Asterisk project. Please do not directly contact
00010  * any of the maintainers of this project for assistance;
00011  * the project provides a web site, mailing lists and IRC
00012  * channels for your use.
00013  *
00014  * This program is free software, distributed under the terms of
00015  * the GNU General Public License Version 2. See the LICENSE file
00016  * at the top of the source tree.
00017  */
00018 
00019 /*! \file
00020  *
00021  * \brief Convenient Application Routines
00022  *
00023  * \author Mark Spencer <markster@digium.com> 
00024  */
00025 
00026 #include "asterisk.h"
00027 
00028 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
00029 
00030 #include <stdio.h>
00031 #include <stdlib.h>
00032 #include <string.h>
00033 #include <sys/time.h>
00034 #include <signal.h>
00035 #include <errno.h>
00036 #include <unistd.h>
00037 #include <dirent.h>
00038 #include <sys/types.h>
00039 #include <sys/stat.h>
00040 #include <regex.h>
00041 
00042 #include "asterisk/channel.h"
00043 #include "asterisk/pbx.h"
00044 #include "asterisk/file.h"
00045 #include "asterisk/app.h"
00046 #include "asterisk/dsp.h"
00047 #include "asterisk/logger.h"
00048 #include "asterisk/options.h"
00049 #include "asterisk/utils.h"
00050 #include "asterisk/lock.h"
00051 #include "asterisk/indications.h"
00052 #include "asterisk/linkedlists.h"
00053 
00054 #define MAX_OTHER_FORMATS 10
00055 
00056 static AST_LIST_HEAD_STATIC(groups, ast_group_info);
00057 
00058 /* !
00059 This function presents a dialtone and reads an extension into 'collect' 
00060 which must be a pointer to a **pre-initialized** array of char having a 
00061 size of 'size' suitable for writing to.  It will collect no more than the smaller 
00062 of 'maxlen' or 'size' minus the original strlen() of collect digits.
00063 \return 0 if extension does not exist, 1 if extension exists
00064 */
00065 int ast_app_dtget(struct ast_channel *chan, const char *context, char *collect, size_t size, int maxlen, int timeout) 
00066 {
00067    struct tone_zone_sound *ts;
00068    int res=0, x=0;
00069 
00070    if (maxlen > size)
00071       maxlen = size;
00072    
00073    if (!timeout && chan->pbx)
00074       timeout = chan->pbx->dtimeout;
00075    else if (!timeout)
00076       timeout = 5;
00077    
00078    ts = ast_get_indication_tone(chan->zone,"dial");
00079    if (ts && ts->data[0])
00080       res = ast_playtones_start(chan, 0, ts->data, 0);
00081    else 
00082       ast_log(LOG_NOTICE,"Huh....? no dial for indications?\n");
00083    
00084    for (x = strlen(collect); x < maxlen; ) {
00085       res = ast_waitfordigit(chan, timeout);
00086       if (!ast_ignore_pattern(context, collect))
00087          ast_playtones_stop(chan);
00088       if (res < 1)
00089          break;
00090       if (res == '#')
00091          break;
00092       collect[x++] = res;
00093       if (!ast_matchmore_extension(chan, context, collect, 1, chan->cid.cid_num))
00094          break;
00095    }
00096    if (res >= 0)
00097       res = ast_exists_extension(chan, context, collect, 1, chan->cid.cid_num) ? 1 : 0;
00098    return res;
00099 }
00100 
00101 /*! \param c The channel to read from
00102  *  \param prompt The file to stream to the channel
00103  *  \param s The string to read in to.  Must be at least the size of your length
00104  *  \param maxlen How many digits to read (maximum)
00105  *  \param timeout set timeout to 0 for "standard" timeouts. Set timeout to -1 for 
00106  *      "ludicrous time" (essentially never times out) */
00107 int ast_app_getdata(struct ast_channel *c, char *prompt, char *s, int maxlen, int timeout)
00108 {
00109    int res=0,to,fto, result=0;
00110    /* XXX Merge with full version? XXX */
00111    if (maxlen)
00112       s[0] = '\0';
00113    if (prompt) {
00114                 char *front;
00115                 char *temp = ast_strdupa(prompt);
00116                 while(!res && (front = strsep(&temp, "&"))) {
00117                         if( (res = ast_streamfile(c, front, c->language)) ) {
00118             res = 0;
00119             break;
00120          }
00121          if(!res && !result)
00122             result = ast_waitstream(c, AST_DIGIT_ANY);
00123          if(result)
00124             break;
00125          ast_stopstream(c);
00126                 }
00127    }
00128    fto = c->pbx ? c->pbx->rtimeout * 1000 : 6000;
00129    to = c->pbx ? c->pbx->dtimeout * 1000 : 2000;
00130 
00131    if (timeout > 0) 
00132       fto = to = timeout;
00133    if (timeout < 0) 
00134       fto = to = 1000000000;
00135    res = ast_readstring(c, s, maxlen, to, fto, "#");
00136    if(result) {
00137       char tmp[256];
00138       snprintf(tmp, sizeof(tmp), "%c%s", result, s);
00139       snprintf(s, sizeof(tmp), "%s", tmp);
00140    }
00141    return res;
00142 }
00143 
00144 
00145 int ast_app_getdata_full(struct ast_channel *c, char *prompt, char *s, int maxlen, int timeout, int audiofd, int ctrlfd)
00146 {
00147    int res, to, fto;
00148    if (prompt) {
00149       res = ast_streamfile(c, prompt, c->language);
00150       if (res < 0)
00151          return res;
00152    }
00153    fto = 6000;
00154    to = 2000;
00155    if (timeout > 0) 
00156       fto = to = timeout;
00157    if (timeout < 0) 
00158       fto = to = 1000000000;
00159    res = ast_readstring_full(c, s, maxlen, to, fto, "#", audiofd, ctrlfd);
00160    return res;
00161 }
00162 
00163 static int (*ast_has_voicemail_func)(const char *mailbox, const char *folder) = NULL;
00164 static int (*ast_inboxcount_func)(const char *mailbox, int *newmsgs, int *oldmsgs) = NULL;
00165 static int (*ast_messagecount_func)(const char *context, const char *mailbox, const char *folder) = NULL;
00166 
00167 void ast_install_vm_functions(int (*has_voicemail_func)(const char *mailbox, const char *folder),
00168                int (*inboxcount_func)(const char *mailbox, int *newmsgs, int *oldmsgs),
00169                int (*messagecount_func)(const char *context, const char *mailbox, const char *folder))
00170 {
00171    ast_has_voicemail_func = has_voicemail_func;
00172    ast_inboxcount_func = inboxcount_func;
00173    ast_messagecount_func = messagecount_func;
00174 }
00175 
00176 void ast_uninstall_vm_functions(void)
00177 {
00178    ast_has_voicemail_func = NULL;
00179    ast_inboxcount_func = NULL;
00180    ast_messagecount_func = NULL;
00181 }
00182 
00183 int ast_app_has_voicemail(const char *mailbox, const char *folder)
00184 {
00185    static int warned = 0;
00186    if (ast_has_voicemail_func)
00187       return ast_has_voicemail_func(mailbox, folder);
00188 
00189    if ((option_verbose > 2) && !warned) {
00190       ast_verbose(VERBOSE_PREFIX_3 "Message check requested for mailbox %s/folder %s but voicemail not loaded.\n", mailbox, folder ? folder : "INBOX");
00191       warned++;
00192    }
00193    return 0;
00194 }
00195 
00196 
00197 int ast_app_inboxcount(const char *mailbox, int *newmsgs, int *oldmsgs)
00198 {
00199    static int warned = 0;
00200    if (newmsgs)
00201       *newmsgs = 0;
00202    if (oldmsgs)
00203       *oldmsgs = 0;
00204    if (ast_inboxcount_func)
00205       return ast_inboxcount_func(mailbox, newmsgs, oldmsgs);
00206 
00207    if (!warned && (option_verbose > 2)) {
00208       warned++;
00209       ast_verbose(VERBOSE_PREFIX_3 "Message count requested for mailbox %s but voicemail not loaded.\n", mailbox);
00210    }
00211 
00212    return 0;
00213 }
00214 
00215 int ast_app_messagecount(const char *context, const char *mailbox, const char *folder)
00216 {
00217    static int warned = 0;
00218    if (ast_messagecount_func)
00219       return ast_messagecount_func(context, mailbox, folder);
00220 
00221    if (!warned && (option_verbose > 2)) {
00222       warned++;
00223       ast_verbose(VERBOSE_PREFIX_3 "Message count requested for mailbox %s@%s/%s but voicemail not loaded.\n", mailbox, context, folder);
00224    }
00225 
00226    return 0;
00227 }
00228 
00229 int ast_dtmf_stream(struct ast_channel *chan, struct ast_channel *peer, const char *digits, int between) 
00230 {
00231    const char *ptr;
00232    int res = 0;
00233 
00234    if (!between)
00235       between = 100;
00236 
00237    if (peer)
00238       res = ast_autoservice_start(peer);
00239 
00240    if (!res)
00241       res = ast_waitfor(chan, 100);
00242 
00243    /* ast_waitfor will return the number of remaining ms on success */
00244    if (res < 0)
00245       return res;
00246 
00247    for (ptr = digits; *ptr; ptr++) {
00248       if (*ptr == 'w') {
00249          /* 'w' -- wait half a second */
00250          if ((res = ast_safe_sleep(chan, 500)))
00251             break;
00252       } else if (strchr("0123456789*#abcdfABCDF", *ptr)) {
00253          /* Character represents valid DTMF */
00254          if (*ptr == 'f' || *ptr == 'F') {
00255             /* ignore return values if not supported by channel */
00256             ast_indicate(chan, AST_CONTROL_FLASH);
00257          } else
00258             ast_senddigit(chan, *ptr);
00259          /* pause between digits */
00260          if ((res = ast_safe_sleep(chan, between)))
00261             break;
00262       } else
00263          ast_log(LOG_WARNING, "Illegal DTMF character '%c' in string. (0-9*#aAbBcCdD allowed)\n",*ptr);
00264    }
00265 
00266    if (peer) {
00267       /* Stop autoservice on the peer channel, but don't overwrite any error condition 
00268          that has occurred previously while acting on the primary channel */
00269       if (ast_autoservice_stop(peer) && !res)
00270          res = -1;
00271    }
00272 
00273    return res;
00274 }
00275 
00276 struct linear_state {
00277    int fd;
00278    int autoclose;
00279    int allowoverride;
00280    int origwfmt;
00281 };
00282 
00283 static void linear_release(struct ast_channel *chan, void *params)
00284 {
00285    struct linear_state *ls = params;
00286    if (ls->origwfmt && ast_set_write_format(chan, ls->origwfmt)) {
00287       ast_log(LOG_WARNING, "Unable to restore channel '%s' to format '%d'\n", chan->name, ls->origwfmt);
00288    }
00289    if (ls->autoclose)
00290       close(ls->fd);
00291    free(params);
00292 }
00293 
00294 static int linear_generator(struct ast_channel *chan, void *data, int len, int samples)
00295 {
00296    struct ast_frame f;
00297    short buf[2048 + AST_FRIENDLY_OFFSET / 2];
00298    struct linear_state *ls = data;
00299    int res;
00300    len = samples * 2;
00301    if (len > sizeof(buf) - AST_FRIENDLY_OFFSET) {
00302       ast_log(LOG_WARNING, "Can't generate %d bytes of data!\n" ,len);
00303       len = sizeof(buf) - AST_FRIENDLY_OFFSET;
00304    }
00305    memset(&f, 0, sizeof(f));
00306    res = read(ls->fd, buf + AST_FRIENDLY_OFFSET/2, len);
00307    if (res > 0) {
00308       f.frametype = AST_FRAME_VOICE;
00309       f.subclass = AST_FORMAT_SLINEAR;
00310       f.data = buf + AST_FRIENDLY_OFFSET/2;
00311       f.datalen = res;
00312       f.samples = res / 2;
00313       f.offset = AST_FRIENDLY_OFFSET;
00314       ast_write(chan, &f);
00315       if (res == len)
00316          return 0;
00317    }
00318    return -1;
00319 }
00320 
00321 static void *linear_alloc(struct ast_channel *chan, void *params)
00322 {
00323    struct linear_state *ls;
00324    /* In this case, params is already malloc'd */
00325    if (params) {
00326       ls = params;
00327       if (ls->allowoverride)
00328          ast_set_flag(chan, AST_FLAG_WRITE_INT);
00329       else
00330          ast_clear_flag(chan, AST_FLAG_WRITE_INT);
00331       ls->origwfmt = chan->writeformat;
00332       if (ast_set_write_format(chan, AST_FORMAT_SLINEAR)) {
00333          ast_log(LOG_WARNING, "Unable to set '%s' to linear format (write)\n", chan->name);
00334          free(ls);
00335          ls = params = NULL;
00336       }
00337    }
00338    return params;
00339 }
00340 
00341 static struct ast_generator linearstream = 
00342 {
00343    alloc: linear_alloc,
00344    release: linear_release,
00345    generate: linear_generator,
00346 };
00347 
00348 int ast_linear_stream(struct ast_channel *chan, const char *filename, int fd, int allowoverride)
00349 {
00350    struct linear_state *lin;
00351    char tmpf[256];
00352    int res = -1;
00353    int autoclose = 0;
00354    if (fd < 0) {
00355       if (ast_strlen_zero(filename))
00356          return -1;
00357       autoclose = 1;
00358       if (filename[0] == '/') 
00359          ast_copy_string(tmpf, filename, sizeof(tmpf));
00360       else
00361          snprintf(tmpf, sizeof(tmpf), "%s/%s/%s", (char *)ast_config_AST_DATA_DIR, "sounds", filename);
00362       fd = open(tmpf, O_RDONLY);
00363       if (fd < 0){
00364          ast_log(LOG_WARNING, "Unable to open file '%s': %s\n", tmpf, strerror(errno));
00365          return -1;
00366       }
00367    }
00368    if ((lin = ast_calloc(1, sizeof(*lin)))) {
00369       lin->fd = fd;
00370       lin->allowoverride = allowoverride;
00371       lin->autoclose = autoclose;
00372       res = ast_activate_generator(chan, &linearstream, lin);
00373    }
00374    return res;
00375 }
00376 
00377 int ast_control_streamfile(struct ast_channel *chan, const char *file,
00378             const char *fwd, const char *rev,
00379             const char *stop, const char *pause,
00380             const char *restart, int skipms) 
00381 {
00382    char *breaks = NULL;
00383    char *end = NULL;
00384    int blen = 2;
00385    int res;
00386    long pause_restart_point = 0;
00387 
00388    if (stop)
00389       blen += strlen(stop);
00390    if (pause)
00391       blen += strlen(pause);
00392    if (restart)
00393       blen += strlen(restart);
00394 
00395    if (blen > 2) {
00396       breaks = alloca(blen + 1);
00397       breaks[0] = '\0';
00398       if (stop)
00399          strcat(breaks, stop);
00400       if (pause)
00401          strcat(breaks, pause);
00402       if (restart)
00403          strcat(breaks, restart);
00404    }
00405    if (chan->_state != AST_STATE_UP)
00406       res = ast_answer(chan);
00407 
00408    if (file) {
00409       if ((end = strchr(file,':'))) {
00410          if (!strcasecmp(end, ":end")) {
00411             *end = '\0';
00412             end++;
00413          }
00414       }
00415    }
00416 
00417    for (;;) {
00418       ast_stopstream(chan);
00419       res = ast_streamfile(chan, file, chan->language);
00420       if (!res) {
00421          if (pause_restart_point) {
00422             ast_seekstream(chan->stream, pause_restart_point, SEEK_SET);
00423             pause_restart_point = 0;
00424          }
00425          else if (end) {
00426             ast_seekstream(chan->stream, 0, SEEK_END);
00427             end = NULL;
00428          };
00429          res = ast_waitstream_fr(chan, breaks, fwd, rev, skipms);
00430       }
00431 
00432       if (res < 1)
00433          break;
00434 
00435       /* We go at next loop if we got the restart char */
00436       if (restart && strchr(restart, res)) {
00437          if (option_debug)
00438             ast_log(LOG_DEBUG, "we'll restart the stream here at next loop\n");
00439          pause_restart_point = 0;
00440          continue;
00441       }
00442 
00443       if (pause && strchr(pause, res)) {
00444          pause_restart_point = ast_tellstream(chan->stream);
00445          for (;;) {
00446             ast_stopstream(chan);
00447             res = ast_waitfordigit(chan, 1000);
00448             if (!res)
00449                continue;
00450             else if (res == -1 || strchr(pause, res) || (stop && strchr(stop, res)))
00451                break;
00452          }
00453          if (res == *pause) {
00454             res = 0;
00455             continue;
00456          }
00457       }
00458 
00459       if (res == -1)
00460          break;
00461 
00462       /* if we get one of our stop chars, return it to the calling function */
00463       if (stop && strchr(stop, res))
00464          break;
00465    }
00466 
00467    ast_stopstream(chan);
00468 
00469    return res;
00470 }
00471 
00472 int ast_play_and_wait(struct ast_channel *chan, const char *fn)
00473 {
00474    int d;
00475    d = ast_streamfile(chan, fn, chan->language);
00476    if (d)
00477       return d;
00478    d = ast_waitstream(chan, AST_DIGIT_ANY);
00479    ast_stopstream(chan);
00480    return d;
00481 }
00482 
00483 static int global_silence_threshold = 128;
00484 static int global_maxsilence = 0;
00485 
00486 /*! Optionally play a sound file or a beep, then record audio and video from the channel.
00487  * @param chan Channel to playback to/record from.
00488  * @param playfile Filename of sound to play before recording begins.
00489  * @param recordfile Filename to record to.
00490  * @param maxtime Maximum length of recording (in milliseconds).
00491  * @param fmt Format(s) to record message in. Multiple formats may be specified by separating them with a '|'.
00492  * @param duration Where to store actual length of the recorded message (in milliseconds).
00493  * @param beep Whether to play a beep before starting to record.
00494  * @param silencethreshold 
00495  * @param maxsilence Length of silence that will end a recording (in milliseconds).
00496  * @param path Optional filesystem path to unlock.
00497  * @param prepend If true, prepend the recorded audio to an existing file.
00498  * @param acceptdtmf DTMF digits that will end the recording.
00499  * @param canceldtmf DTMF digits that will cancel the recording.
00500  */
00501 
00502 static int __ast_play_and_record(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, int beep, int silencethreshold, int maxsilence, const char *path, int prepend, const char *acceptdtmf, const char *canceldtmf)
00503 {
00504    int d = 0;
00505    char *fmts;
00506    char comment[256];
00507    int x, fmtcnt = 1, res = -1, outmsg = 0;
00508    struct ast_filestream *others[MAX_OTHER_FORMATS];
00509    char *sfmt[MAX_OTHER_FORMATS];
00510    char *stringp = NULL;
00511    time_t start, end;
00512    struct ast_dsp *sildet = NULL;   /* silence detector dsp */
00513    int totalsilence = 0;
00514    int rfmt = 0;
00515    struct ast_silence_generator *silgen = NULL;
00516    char prependfile[80];
00517    int no_audio = 0;
00518 
00519    if (silencethreshold < 0)
00520       silencethreshold = global_silence_threshold;
00521 
00522    if (maxsilence < 0)
00523       maxsilence = global_maxsilence;
00524 
00525    /* barf if no pointer passed to store duration in */
00526    if (duration == NULL) {
00527       ast_log(LOG_WARNING, "Error play_and_record called without duration pointer\n");
00528       return -1;
00529    }
00530 
00531    if (option_debug)
00532       ast_log(LOG_DEBUG,"play_and_record: %s, %s, '%s'\n", playfile ? playfile : "<None>", recordfile, fmt);
00533    snprintf(comment, sizeof(comment), "Playing %s, Recording to: %s on %s\n", playfile ? playfile : "<None>", recordfile, chan->name);
00534 
00535    if (playfile || beep) {
00536       if (!beep)
00537          d = ast_play_and_wait(chan, playfile);
00538       if (d > -1)
00539          d = ast_stream_and_wait(chan, "beep", chan->language, "");
00540       if (d < 0)
00541          return -1;
00542    }
00543 
00544    if (prepend) {
00545       ast_copy_string(prependfile, recordfile, sizeof(prependfile)); 
00546       strncat(prependfile, "-prepend", sizeof(prependfile) - strlen(prependfile) - 1);
00547    }
00548 
00549    fmts = ast_strdupa(fmt);
00550 
00551    stringp = fmts;
00552    strsep(&stringp, "|");
00553    if (option_debug)
00554       ast_log(LOG_DEBUG, "Recording Formats: sfmts=%s\n", fmts);
00555    sfmt[0] = ast_strdupa(fmts);
00556 
00557    while ((fmt = strsep(&stringp, "|"))) {
00558       if (fmtcnt > MAX_OTHER_FORMATS - 1) {
00559          ast_log(LOG_WARNING, "Please increase MAX_OTHER_FORMATS in app.c\n");
00560          break;
00561       }
00562       sfmt[fmtcnt++] = ast_strdupa(fmt);
00563    }
00564 
00565    end = start = time(NULL);  /* pre-initialize end to be same as start in case we never get into loop */
00566    for (x = 0; x < fmtcnt; x++) {
00567       others[x] = ast_writefile(prepend ? prependfile : recordfile, sfmt[x], comment, O_TRUNC, 0, 0700);
00568       if (option_verbose > 2)
00569          ast_verbose(VERBOSE_PREFIX_3 "x=%d, open writing:  %s format: %s, %p\n", x, prepend ? prependfile : recordfile, sfmt[x], others[x]);
00570 
00571       if (!others[x])
00572          break;
00573    }
00574 
00575    if (path)
00576       ast_unlock_path(path);
00577 
00578    if (maxsilence > 0) {
00579       sildet = ast_dsp_new(); /* Create the silence detector */
00580       if (!sildet) {
00581          ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
00582          return -1;
00583       }
00584       ast_dsp_set_threshold(sildet, silencethreshold);
00585       rfmt = chan->readformat;
00586       res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
00587       if (res < 0) {
00588          ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
00589          ast_dsp_free(sildet);
00590          return -1;
00591       }
00592    }
00593 
00594    if (!prepend) {
00595       /* Request a video update */
00596       ast_indicate(chan, AST_CONTROL_VIDUPDATE);
00597 
00598       if (ast_opt_transmit_silence)
00599          silgen = ast_channel_start_silence_generator(chan);
00600    }
00601 
00602    if (x == fmtcnt) {
00603       /* Loop forever, writing the packets we read to the writer(s), until
00604          we read a digit or get a hangup */
00605       struct ast_frame *f;
00606       for (;;) {
00607          res = ast_waitfor(chan, 2000);
00608          if (!res) {
00609             if (option_debug)
00610                ast_log(LOG_DEBUG, "One waitfor failed, trying another\n");
00611             /* Try one more time in case of masq */
00612             no_audio = MAX(maxsilence, 4000);
00613             res = ast_waitfor(chan, no_audio - 2000);
00614             if (!res) {
00615                ast_log(LOG_WARNING, "No audio available on %s??\n", chan->name);
00616                res = -1;
00617             } else {
00618                no_audio = 0;              
00619             }
00620          }
00621 
00622          if (res < 0) {
00623             f = NULL;
00624             break;
00625          }
00626          f = ast_read(chan);
00627          if (!f)
00628             break;
00629          if (f->frametype == AST_FRAME_VOICE) {
00630             /* write each format */
00631             for (x = 0; x < fmtcnt; x++) {
00632                if (prepend && !others[x])
00633                   break;
00634                res = ast_writestream(others[x], f);
00635             }
00636 
00637             /* Silence Detection */
00638             if (maxsilence > 0) {
00639                int dspsilence = 0;
00640                ast_dsp_silence(sildet, f, &dspsilence);
00641                if (dspsilence)
00642                   totalsilence = dspsilence;
00643                else
00644                   totalsilence = 0;
00645 
00646                if (totalsilence > maxsilence) {
00647                   /* Ended happily with silence */
00648                   if (option_verbose > 2)
00649                      ast_verbose( VERBOSE_PREFIX_3 "Recording automatically stopped after a silence of %d seconds\n", totalsilence/1000);
00650                   res = 'S';
00651                   outmsg = 2;
00652                   break;
00653                }
00654             }
00655             /* Exit on any error */
00656             if (res) {
00657                ast_log(LOG_WARNING, "Error writing frame\n");
00658                break;
00659             }
00660          } else if (f->frametype == AST_FRAME_VIDEO) {
00661             /* Write only once */
00662             ast_writestream(others[0], f);
00663          } else if (f->frametype == AST_FRAME_DTMF) {
00664             if (prepend) {
00665             /* stop recording with any digit */
00666                if (option_verbose > 2) 
00667                   ast_verbose(VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
00668                res = 't';
00669                outmsg = 2;
00670                break;
00671             }
00672             if (strchr(acceptdtmf, f->subclass)) {
00673                if (option_verbose > 2)
00674                   ast_verbose(VERBOSE_PREFIX_3 "User ended message by pressing %c\n", f->subclass);
00675                res = f->subclass;
00676                outmsg = 2;
00677                break;
00678             }
00679             if (strchr(canceldtmf, f->subclass)) {
00680                if (option_verbose > 2)
00681                   ast_verbose(VERBOSE_PREFIX_3 "User cancelled message by pressing %c\n", f->subclass);
00682                res = f->subclass;
00683                outmsg = 0;
00684                break;
00685             }
00686          }
00687          if (maxtime) {
00688             end = time(NULL);
00689             if (maxtime < (end - start)) {
00690                if (option_verbose > 2)
00691                   ast_verbose(VERBOSE_PREFIX_3 "Took too long, cutting it short...\n");
00692                res = 't';
00693                outmsg = 2;
00694                break;
00695             }
00696          }
00697          ast_frfree(f);
00698       }
00699       if (!f) {
00700          if (option_verbose > 2)
00701             ast_verbose(VERBOSE_PREFIX_3 "User hung up\n");
00702          res = -1;
00703          outmsg = 1;
00704       } else {
00705          ast_frfree(f);
00706       }
00707       if (end == start)
00708          end = time(NULL);
00709    } else {
00710       ast_log(LOG_WARNING, "Error creating writestream '%s', format '%s'\n", recordfile, sfmt[x]);
00711    }
00712 
00713    if (!prepend) {
00714       if (silgen)
00715          ast_channel_stop_silence_generator(chan, silgen);
00716    }
00717    *duration = end - start;
00718    if (no_audio) {
00719       *duration -= no_audio / 1000;
00720       *duration = MAX(*duration, 0);  /* just to make sure it does not get negative */
00721    }
00722 
00723    if (!prepend) {
00724       for (x = 0; x < fmtcnt; x++) {
00725          if (!others[x])
00726             break;
00727          if (res > 0)
00728             ast_stream_rewind(others[x], totalsilence ? totalsilence - 200 : 200);
00729          ast_truncstream(others[x]);
00730          ast_closestream(others[x]);
00731       }
00732    }
00733 
00734    if (prepend && outmsg) {
00735       struct ast_filestream *realfiles[MAX_OTHER_FORMATS];
00736       struct ast_frame *fr;
00737 
00738       for (x = 0; x < fmtcnt; x++) {
00739          snprintf(comment, sizeof(comment), "Opening the real file %s.%s\n", recordfile, sfmt[x]);
00740          realfiles[x] = ast_readfile(recordfile, sfmt[x], comment, O_RDONLY, 0, 0);
00741          if (!others[x] || !realfiles[x])
00742             break;
00743          ast_stream_rewind(others[x], totalsilence ? totalsilence - 200 : 200);
00744          ast_truncstream(others[x]);
00745          /* add the original file too */
00746          while ((fr = ast_readframe(realfiles[x]))) {
00747             ast_writestream(others[x], fr);
00748             ast_frfree(fr);
00749          }
00750          ast_closestream(others[x]);
00751          ast_closestream(realfiles[x]);
00752          ast_filerename(prependfile, recordfile, sfmt[x]);
00753          if (option_verbose > 3)
00754             ast_verbose(VERBOSE_PREFIX_4 "Recording Format: sfmts=%s, prependfile %s, recordfile %s\n", sfmt[x], prependfile, recordfile);
00755          ast_filedelete(prependfile, sfmt[x]);
00756       }
00757    }
00758    if (rfmt && ast_set_read_format(chan, rfmt)) {
00759       ast_log(LOG_WARNING, "Unable to restore format %s to channel '%s'\n", ast_getformatname(rfmt), chan->name);
00760    }
00761    if (outmsg == 2) {
00762       ast_stream_and_wait(chan, "auth-thankyou", chan->language, "");
00763    }
00764    if (sildet)
00765       ast_dsp_free(sildet);
00766    return res;
00767 }
00768 
00769 static char default_acceptdtmf[] = "#";
00770 static char default_canceldtmf[] = "";
00771 
00772 int ast_play_and_record_full(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, int silencethreshold, int maxsilence, const char *path, const char *acceptdtmf, const char *canceldtmf)
00773 {
00774    return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, 0, silencethreshold, maxsilence, path, 0, S_OR(acceptdtmf, default_acceptdtmf), S_OR(canceldtmf, default_canceldtmf));
00775 }
00776 
00777 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)
00778 {
00779    return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, 0, silencethreshold, maxsilence, path, 0, default_acceptdtmf, default_canceldtmf);
00780 }
00781 
00782 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)
00783 {
00784    return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, beep, silencethreshold, maxsilence, NULL, 1, default_acceptdtmf, default_canceldtmf);
00785 }
00786 
00787 /* Channel group core functions */
00788 
00789 int ast_app_group_split_group(const char *data, char *group, int group_max, char *category, int category_max)
00790 {
00791    int res=0;
00792    char tmp[256];
00793    char *grp=NULL, *cat=NULL;
00794 
00795    if (!ast_strlen_zero(data)) {
00796       ast_copy_string(tmp, data, sizeof(tmp));
00797       grp = tmp;
00798       cat = strchr(tmp, '@');
00799       if (cat) {
00800          *cat = '\0';
00801          cat++;
00802       }
00803    }
00804 
00805    if (!ast_strlen_zero(grp))
00806       ast_copy_string(group, grp, group_max);
00807    else
00808       res = -1;
00809 
00810    if (!ast_strlen_zero(cat))
00811       ast_copy_string(category, cat, category_max);
00812 
00813    return res;
00814 }
00815 
00816 int ast_app_group_set_channel(struct ast_channel *chan, const char *data)
00817 {
00818    int res = 0;
00819    char group[80] = "", category[80] = "";
00820    struct ast_group_info *gi = NULL;
00821    size_t len = 0;
00822    
00823    if (ast_app_group_split_group(data, group, sizeof(group), category, sizeof(category)))
00824       return -1;
00825    
00826    /* Calculate memory we will need if this is new */
00827    len = sizeof(*gi) + strlen(group) + 1;
00828    if (!ast_strlen_zero(category))
00829       len += strlen(category) + 1;
00830    
00831    AST_LIST_LOCK(&groups);
00832    AST_LIST_TRAVERSE(&groups, gi, list) {
00833       if (gi->chan == chan && !strcasecmp(gi->group, group) && (ast_strlen_zero(category) || (!ast_strlen_zero(gi->category) && !strcasecmp(gi->category, category))))
00834          break;
00835    }
00836    
00837    if (!gi && (gi = calloc(1, len))) {
00838       gi->chan = chan;
00839       gi->group = (char *) gi + sizeof(*gi);
00840       strcpy(gi->group, group);
00841       if (!ast_strlen_zero(category)) {
00842          gi->category = (char *) gi + sizeof(*gi) + strlen(group) + 1;
00843          strcpy(gi->category, category);
00844       }
00845       AST_LIST_INSERT_TAIL(&groups, gi, list);
00846    } else {
00847       res = -1;
00848    }
00849    
00850    AST_LIST_UNLOCK(&groups);
00851    
00852    return res;
00853 }
00854 
00855 int ast_app_group_get_count(const char *group, const char *category)
00856 {
00857    struct ast_group_info *gi = NULL;
00858    int count = 0;
00859 
00860    if (ast_strlen_zero(group))
00861       return 0;
00862    
00863    AST_LIST_LOCK(&groups);
00864    AST_LIST_TRAVERSE(&groups, gi, list) {
00865       if (!strcasecmp(gi->group, group) && (ast_strlen_zero(category) || !strcasecmp(gi->category, category)))
00866          count++;
00867    }
00868    AST_LIST_UNLOCK(&groups);
00869 
00870    return count;
00871 }
00872 
00873 int ast_app_group_match_get_count(const char *groupmatch, const char *category)
00874 {
00875    struct ast_group_info *gi = NULL;
00876    regex_t regexbuf;
00877    int count = 0;
00878 
00879    if (ast_strlen_zero(groupmatch))
00880       return 0;
00881 
00882    /* if regex compilation fails, return zero matches */
00883    if (regcomp(&regexbuf, groupmatch, REG_EXTENDED | REG_NOSUB))
00884       return 0;
00885 
00886    AST_LIST_LOCK(&groups);
00887    AST_LIST_TRAVERSE(&groups, gi, list) {
00888       if (!regexec(&regexbuf, gi->group, 0, NULL, 0) && (ast_strlen_zero(category) || !strcasecmp(gi->category, category)))
00889          count++;
00890    }
00891    AST_LIST_UNLOCK(&groups);
00892 
00893    regfree(&regexbuf);
00894 
00895    return count;
00896 }
00897 
00898 int ast_app_group_update(struct ast_channel *old, struct ast_channel *new)
00899 {
00900    struct ast_group_info *gi = NULL;
00901 
00902    AST_LIST_LOCK(&groups);
00903    AST_LIST_TRAVERSE(&groups, gi, list) {
00904       if (gi->chan == old)
00905          gi->chan = new;
00906    }
00907    AST_LIST_UNLOCK(&groups);
00908 
00909    return 0;
00910 }
00911 
00912 int ast_app_group_discard(struct ast_channel *chan)
00913 {
00914    struct ast_group_info *gi = NULL;
00915    
00916    AST_LIST_LOCK(&groups);
00917    AST_LIST_TRAVERSE_SAFE_BEGIN(&groups, gi, list) {
00918       if (gi->chan == chan) {
00919          AST_LIST_REMOVE_CURRENT(&groups, list);
00920          free(gi);
00921       }
00922    }
00923         AST_LIST_TRAVERSE_SAFE_END
00924    AST_LIST_UNLOCK(&groups);
00925    
00926    return 0;
00927 }
00928 
00929 int ast_app_group_list_lock(void)
00930 {
00931    return AST_LIST_LOCK(&groups);
00932 }
00933 
00934 struct ast_group_info *ast_app_group_list_head(void)
00935 {
00936    return AST_LIST_FIRST(&groups);
00937 }
00938 
00939 int ast_app_group_list_unlock(void)
00940 {
00941    return AST_LIST_UNLOCK(&groups);
00942 }
00943 
00944 unsigned int ast_app_separate_args(char *buf, char delim, char **array, int arraylen)
00945 {
00946    int argc;
00947    char *scan;
00948    int paren = 0, quote = 0;
00949 
00950    if (!buf || !array || !arraylen)
00951       return 0;
00952 
00953    memset(array, 0, arraylen * sizeof(*array));
00954 
00955    scan = buf;
00956 
00957    for (argc = 0; *scan && (argc < arraylen - 1); argc++) {
00958       array[argc] = scan;
00959       for (; *scan; scan++) {
00960          if (*scan == '(')
00961             paren++;
00962          else if (*scan == ')') {
00963             if (paren)
00964                paren--;
00965          } else if (*scan == '"' && delim != '"') {
00966             quote = quote ? 0 : 1;
00967             /* Remove quote character from argument */
00968             memmove(scan, scan + 1, strlen(scan));
00969             scan--;
00970          } else if (*scan == '\\') {
00971             /* Literal character, don't parse */
00972             memmove(scan, scan + 1, strlen(scan));
00973          } else if ((*scan == delim) && !paren && !quote) {
00974             *scan++ = '\0';
00975             break;
00976          }
00977       }
00978    }
00979 
00980    if (*scan)
00981       array[argc++] = scan;
00982 
00983    return argc;
00984 }
00985 
00986 enum AST_LOCK_RESULT ast_lock_path(const char *path)
00987 {
00988    char *s;
00989    char *fs;
00990    int res;
00991    int fd;
00992    int lp = strlen(path);
00993    time_t start;
00994 
00995    if (!(s = alloca(lp + 10)) || !(fs = alloca(lp + 20))) {
00996       ast_log(LOG_WARNING, "Out of memory!\n");
00997       return AST_LOCK_FAILURE;
00998    }
00999 
01000    snprintf(fs, strlen(path) + 19, "%s/.lock-%08lx", path, ast_random());
01001    fd = open(fs, O_WRONLY | O_CREAT | O_EXCL, 0600);
01002    if (fd < 0) {
01003       ast_log(LOG_ERROR, "Unable to create lock file '%s': %s\n", path, strerror(errno));
01004       return AST_LOCK_PATH_NOT_FOUND;
01005    }
01006    close(fd);
01007 
01008    snprintf(s, strlen(path) + 9, "%s/.lock", path);
01009    start = time(NULL);
01010    while (((res = link(fs, s)) < 0) && (errno == EEXIST) && (time(NULL) - start < 5))
01011       usleep(1);
01012 
01013    unlink(fs);
01014 
01015    if (res) {
01016       ast_log(LOG_WARNING, "Failed to lock path '%s': %s\n", path, strerror(errno));
01017       return AST_LOCK_TIMEOUT;
01018    } else {
01019       if (option_debug)
01020          ast_log(LOG_DEBUG, "Locked path '%s'\n", path);
01021       return AST_LOCK_SUCCESS;
01022    }
01023 }
01024 
01025 int ast_unlock_path(const char *path)
01026 {
01027    char *s;
01028    int res;
01029 
01030    if (!(s = alloca(strlen(path) + 10))) {
01031       ast_log(LOG_WARNING, "Out of memory!\n");
01032       return -1;
01033    }
01034 
01035    snprintf(s, strlen(path) + 9, "%s/%s", path, ".lock");
01036 
01037    if ((res = unlink(s)))
01038       ast_log(LOG_ERROR, "Could not unlock path '%s': %s\n", path, strerror(errno));
01039    else {
01040       if (option_debug)
01041          ast_log(LOG_DEBUG, "Unlocked path '%s'\n", path);
01042    }
01043 
01044    return res;
01045 }
01046 
01047 int ast_record_review(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, const char *path) 
01048 {
01049    int silencethreshold = 128; 
01050    int maxsilence=0;
01051    int res = 0;
01052    int cmd = 0;
01053    int max_attempts = 3;
01054    int attempts = 0;
01055    int recorded = 0;
01056    int message_exists = 0;
01057    /* Note that urgent and private are for flagging messages as such in the future */
01058 
01059    /* barf if no pointer passed to store duration in */
01060    if (duration == NULL) {
01061       ast_log(LOG_WARNING, "Error ast_record_review called without duration pointer\n");
01062       return -1;
01063    }
01064 
01065    cmd = '3';   /* Want to start by recording */
01066 
01067    while ((cmd >= 0) && (cmd != 't')) {
01068       switch (cmd) {
01069       case '1':
01070          if (!message_exists) {
01071             /* In this case, 1 is to record a message */
01072             cmd = '3';
01073             break;
01074          } else {
01075             ast_stream_and_wait(chan, "vm-msgsaved", chan->language, "");
01076             cmd = 't';
01077             return res;
01078          }
01079       case '2':
01080          /* Review */
01081          ast_verbose(VERBOSE_PREFIX_3 "Reviewing the recording\n");
01082          cmd = ast_stream_and_wait(chan, recordfile, chan->language, AST_DIGIT_ANY);
01083          break;
01084       case '3':
01085          message_exists = 0;
01086          /* Record */
01087          if (recorded == 1)
01088             ast_verbose(VERBOSE_PREFIX_3 "Re-recording\n");
01089          else  
01090             ast_verbose(VERBOSE_PREFIX_3 "Recording\n");
01091          recorded = 1;
01092          cmd = ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, silencethreshold, maxsilence, path);
01093          if (cmd == -1) {
01094          /* User has hung up, no options to give */
01095             return cmd;
01096          }
01097          if (cmd == '0') {
01098             break;
01099          } else if (cmd == '*') {
01100             break;
01101          } 
01102          else {
01103             /* If all is well, a message exists */
01104             message_exists = 1;
01105             cmd = 0;
01106          }
01107          break;
01108       case '4':
01109       case '5':
01110       case '6':
01111       case '7':
01112       case '8':
01113       case '9':
01114       case '*':
01115       case '#':
01116          cmd = ast_play_and_wait(chan, "vm-sorry");
01117          break;
01118       default:
01119          if (message_exists) {
01120             cmd = ast_play_and_wait(chan, "vm-review");
01121          }
01122          else {
01123             cmd = ast_play_and_wait(chan, "vm-torerecord");
01124             if (!cmd)
01125                cmd = ast_waitfordigit(chan, 600);
01126          }
01127          
01128          if (!cmd)
01129             cmd = ast_waitfordigit(chan, 6000);
01130          if (!cmd) {
01131             attempts++;
01132          }
01133          if (attempts > max_attempts) {
01134             cmd = 't';
01135          }
01136       }
01137    }
01138    if (cmd == 't')
01139       cmd = 0;
01140    return cmd;
01141 }
01142 
01143 #define RES_UPONE (1 << 16)
01144 #define RES_EXIT  (1 << 17)
01145 #define RES_REPEAT (1 << 18)
01146 #define RES_RESTART ((1 << 19) | RES_REPEAT)
01147 
01148 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata);
01149 
01150 static int ivr_dispatch(struct ast_channel *chan, struct ast_ivr_option *option, char *exten, void *cbdata)
01151 {
01152    int res;
01153    int (*ivr_func)(struct ast_channel *, void *);
01154    char *c;
01155    char *n;
01156    
01157    switch(option->action) {
01158    case AST_ACTION_UPONE:
01159       return RES_UPONE;
01160    case AST_ACTION_EXIT:
01161       return RES_EXIT | (((unsigned long)(option->adata)) & 0xffff);
01162    case AST_ACTION_REPEAT:
01163       return RES_REPEAT | (((unsigned long)(option->adata)) & 0xffff);
01164    case AST_ACTION_RESTART:
01165       return RES_RESTART ;
01166    case AST_ACTION_NOOP:
01167       return 0;
01168    case AST_ACTION_BACKGROUND:
01169       res = ast_stream_and_wait(chan, (char *)option->adata, chan->language, AST_DIGIT_ANY);
01170       if (res < 0) {
01171          ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
01172          res = 0;
01173       }
01174       return res;
01175    case AST_ACTION_PLAYBACK:
01176       res = ast_stream_and_wait(chan, (char *)option->adata, chan->language, "");
01177       if (res < 0) {
01178          ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
01179          res = 0;
01180       }
01181       return res;
01182    case AST_ACTION_MENU:
01183       res = ast_ivr_menu_run_internal(chan, (struct ast_ivr_menu *)option->adata, cbdata);
01184       /* Do not pass entry errors back up, treaat ast though ti was an "UPONE" */
01185       if (res == -2)
01186          res = 0;
01187       return res;
01188    case AST_ACTION_WAITOPTION:
01189       res = ast_waitfordigit(chan, 1000 * (chan->pbx ? chan->pbx->rtimeout : 10));
01190       if (!res)
01191          return 't';
01192       return res;
01193    case AST_ACTION_CALLBACK:
01194       ivr_func = option->adata;
01195       res = ivr_func(chan, cbdata);
01196       return res;
01197    case AST_ACTION_TRANSFER:
01198       res = ast_parseable_goto(chan, option->adata);
01199       return 0;
01200    case AST_ACTION_PLAYLIST:
01201    case AST_ACTION_BACKLIST:
01202       res = 0;
01203       c = ast_strdupa(option->adata);
01204       while ((n = strsep(&c, ";"))) {
01205          if ((res = ast_stream_and_wait(chan, n, chan->language,
01206                (option->action == AST_ACTION_BACKLIST) ? AST_DIGIT_ANY : "")))
01207             break;
01208       }
01209       ast_stopstream(chan);
01210       return res;
01211    default:
01212       ast_log(LOG_NOTICE, "Unknown dispatch function %d, ignoring!\n", option->action);
01213       return 0;
01214    };
01215    return -1;
01216 }
01217 
01218 static int option_exists(struct ast_ivr_menu *menu, char *option)
01219 {
01220    int x;
01221    for (x = 0; menu->options[x].option; x++)
01222       if (!strcasecmp(menu->options[x].option, option))
01223          return x;
01224    return -1;
01225 }
01226 
01227 static int option_matchmore(struct ast_ivr_menu *menu, char *option)
01228 {
01229    int x;
01230    for (x = 0; menu->options[x].option; x++)
01231       if ((!strncasecmp(menu->options[x].option, option, strlen(option))) && 
01232             (menu->options[x].option[strlen(option)]))
01233          return x;
01234    return -1;
01235 }
01236 
01237 static int read_newoption(struct ast_channel *chan, struct ast_ivr_menu *menu, char *exten, int maxexten)
01238 {
01239    int res=0;
01240    int ms;
01241    while (option_matchmore(menu, exten)) {
01242       ms = chan->pbx ? chan->pbx->dtimeout : 5000;
01243       if (strlen(exten) >= maxexten - 1) 
01244          break;
01245       res = ast_waitfordigit(chan, ms);
01246       if (res < 1)
01247          break;
01248       exten[strlen(exten) + 1] = '\0';
01249       exten[strlen(exten)] = res;
01250    }
01251    return res > 0 ? 0 : res;
01252 }
01253 
01254 static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
01255 {
01256    /* Execute an IVR menu structure */
01257    int res=0;
01258    int pos = 0;
01259    int retries = 0;
01260    char exten[AST_MAX_EXTENSION] = "s";
01261    if (option_exists(menu, "s") < 0) {
01262       strcpy(exten, "g");
01263       if (option_exists(menu, "g") < 0) {
01264          ast_log(LOG_WARNING, "No 's' nor 'g' extension in menu '%s'!\n", menu->title);
01265          return -1;
01266       }
01267    }
01268    while(!res) {
01269       while(menu->options[pos].option) {
01270          if (!strcasecmp(menu->options[pos].option, exten)) {
01271             res = ivr_dispatch(chan, menu->options + pos, exten, cbdata);
01272             if (option_debug)
01273                ast_log(LOG_DEBUG, "IVR Dispatch of '%s' (pos %d) yields %d\n", exten, pos, res);
01274             if (res < 0)
01275                break;
01276             else if (res & RES_UPONE)
01277                return 0;
01278             else if (res & RES_EXIT)
01279                return res;
01280             else if (res & RES_REPEAT) {
01281                int maxretries = res & 0xffff;
01282                if ((res & RES_RESTART) == RES_RESTART) {
01283                   retries = 0;
01284                } else
01285                   retries++;
01286                if (!maxretries)
01287                   maxretries = 3;
01288                if ((maxretries > 0) && (retries >= maxretries)) {
01289                   if (option_debug)
01290                      ast_log(LOG_DEBUG, "Max retries %d exceeded\n", maxretries);
01291                   return -2;
01292                } else {
01293                   if (option_exists(menu, "g") > -1) 
01294                      strcpy(exten, "g");
01295                   else if (option_exists(menu, "s") > -1)
01296                      strcpy(exten, "s");
01297                }
01298                pos = 0;
01299                continue;
01300             } else if (res && strchr(AST_DIGIT_ANY, res)) {
01301                if (option_debug)
01302                   ast_log(LOG_DEBUG, "Got start of extension, %c\n", res);
01303                exten[1] = '\0';
01304                exten[0] = res;
01305                if ((res = read_newoption(chan, menu, exten, sizeof(exten))))
01306                   break;
01307                if (option_exists(menu, exten) < 0) {
01308                   if (option_exists(menu, "i")) {
01309                      if (option_debug)
01310                         ast_log(LOG_DEBUG, "Invalid extension entered, going to 'i'!\n");
01311                      strcpy(exten, "i");
01312                      pos = 0;
01313                      continue;
01314                   } else {
01315                      if (option_debug)
01316                         ast_log(LOG_DEBUG, "Aborting on invalid entry, with no 'i' option!\n");
01317                      res = -2;
01318                      break;
01319                   }
01320                } else {
01321                   if (option_debug)
01322                      ast_log(LOG_DEBUG, "New existing extension: %s\n", exten);
01323                   pos = 0;
01324                   continue;
01325                }
01326             }
01327          }
01328          pos++;
01329       }
01330       if (option_debug)
01331          ast_log(LOG_DEBUG, "Stopping option '%s', res is %d\n", exten, res);
01332       pos = 0;
01333       if (!strcasecmp(exten, "s"))
01334          strcpy(exten, "g");
01335       else
01336          break;
01337    }
01338    return res;
01339 }
01340 
01341 int ast_ivr_menu_run(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
01342 {
01343    int res = ast_ivr_menu_run_internal(chan, menu, cbdata);
01344    /* Hide internal coding */
01345    return res > 0 ? 0 : res;
01346 }
01347    
01348 char *ast_read_textfile(const char *filename)
01349 {
01350    int fd;
01351    char *output = NULL;
01352    struct stat filesize;
01353    int count = 0;
01354    int res;
01355    if (stat(filename, &filesize) == -1) {
01356       ast_log(LOG_WARNING, "Error can't stat %s\n", filename);
01357       return NULL;
01358    }
01359    count = filesize.st_size + 1;
01360    fd = open(filename, O_RDONLY);
01361    if (fd < 0) {
01362       ast_log(LOG_WARNING, "Cannot open file '%s' for reading: %s\n", filename, strerror(errno));
01363       return NULL;
01364    }
01365    if ((output = ast_malloc(count))) {
01366       res = read(fd, output, count - 1);
01367       if (res == count - 1) {
01368          output[res] = '\0';
01369       } else {
01370          ast_log(LOG_WARNING, "Short read of %s (%d of %d): %s\n", filename, res, count - 1, strerror(errno));
01371          free(output);
01372          output = NULL;
01373       }
01374    }
01375    close(fd);
01376    return output;
01377 }
01378 
01379 int ast_app_parse_options(const struct ast_app_option *options, struct ast_flags *flags, char **args, char *optstr)
01380 {
01381    char *s;
01382    int curarg;
01383    unsigned int argloc;
01384    char *arg;
01385    int res = 0;
01386 
01387    ast_clear_flag(flags, AST_FLAGS_ALL);
01388 
01389    if (!optstr)
01390       return 0;
01391 
01392    s = optstr;
01393    while (*s) {
01394       curarg = *s++ & 0x7f;   /* the array (in app.h) has 128 entries */
01395       ast_set_flag(flags, options[curarg].flag);
01396       argloc = options[curarg].arg_index;
01397       if (*s == '(') {
01398          /* Has argument */
01399          arg = ++s;
01400          if ((s = strchr(s, ')'))) {
01401             if (argloc)
01402                args[argloc - 1] = arg;
01403             *s++ = '\0';
01404          } else {
01405             ast_log(LOG_WARNING, "Missing closing parenthesis for argument '%c' in string '%s'\n", curarg, arg);
01406             res = -1;
01407             break;
01408          }
01409       } else if (argloc) {
01410          args[argloc - 1] = NULL;
01411       }
01412    }
01413 
01414    return res;
01415 }
01416 

Generated on Mon May 14 04:42:52 2007 for Asterisk - the Open Source PBX by  doxygen 1.5.1