00001
00002
00003
00004
00005
00006
00007
00008
00009
00010
00011
00012
00013
00014
00015
00016
00017
00018
00019
00020
00021
00022
00023
00024
00025
00026 #include "asterisk.h"
00027
00028 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 286267 $")
00029
00030 #include <sys/types.h>
00031 #include <errno.h>
00032 #include <unistd.h>
00033 #include <stdlib.h>
00034 #include <string.h>
00035 #include <stdio.h>
00036 #include <fcntl.h>
00037 #include <dirent.h>
00038 #include <sys/types.h>
00039 #include <sys/stat.h>
00040
00041 #include "asterisk/frame.h"
00042 #include "asterisk/file.h"
00043 #include "asterisk/cli.h"
00044 #include "asterisk/logger.h"
00045 #include "asterisk/channel.h"
00046 #include "asterisk/sched.h"
00047 #include "asterisk/options.h"
00048 #include "asterisk/translate.h"
00049 #include "asterisk/utils.h"
00050 #include "asterisk/lock.h"
00051 #include "asterisk/app.h"
00052 #include "asterisk/pbx.h"
00053 #include "asterisk/linkedlists.h"
00054 #include "asterisk/module.h"
00055 #include "asterisk/astobj2.h"
00056 #include "asterisk/dahdi_compat.h"
00057
00058
00059
00060
00061
00062
00063
00064
00065
00066 int ast_language_is_prefix;
00067
00068 static AST_LIST_HEAD_STATIC(formats, ast_format);
00069
00070 int __ast_format_register(const struct ast_format *f, struct ast_module *mod)
00071 {
00072 struct ast_format *tmp;
00073
00074 if (AST_LIST_LOCK(&formats)) {
00075 ast_log(LOG_WARNING, "Unable to lock format list\n");
00076 return -1;
00077 }
00078 AST_LIST_TRAVERSE(&formats, tmp, list) {
00079 if (!strcasecmp(f->name, tmp->name)) {
00080 AST_LIST_UNLOCK(&formats);
00081 ast_log(LOG_WARNING, "Tried to register '%s' format, already registered\n", f->name);
00082 return -1;
00083 }
00084 }
00085 if (!(tmp = ast_calloc(1, sizeof(*tmp)))) {
00086 AST_LIST_UNLOCK(&formats);
00087 return -1;
00088 }
00089 *tmp = *f;
00090 tmp->module = mod;
00091 if (tmp->buf_size) {
00092
00093
00094
00095
00096 struct _test_align { void *a, *b; } p;
00097 int align = (char *)&p.b - (char *)&p.a;
00098 tmp->buf_size = ((f->buf_size + align - 1)/align)*align;
00099 }
00100
00101 memset(&tmp->list, 0, sizeof(tmp->list));
00102
00103 AST_LIST_INSERT_HEAD(&formats, tmp, list);
00104 AST_LIST_UNLOCK(&formats);
00105 if (option_verbose > 1)
00106 ast_verbose( VERBOSE_PREFIX_2 "Registered file format %s, extension(s) %s\n", f->name, f->exts);
00107
00108 return 0;
00109 }
00110
00111 int ast_format_unregister(const char *name)
00112 {
00113 struct ast_format *tmp;
00114 int res = -1;
00115
00116 if (AST_LIST_LOCK(&formats)) {
00117 ast_log(LOG_WARNING, "Unable to lock format list\n");
00118 return -1;
00119 }
00120 AST_LIST_TRAVERSE_SAFE_BEGIN(&formats, tmp, list) {
00121 if (!strcasecmp(name, tmp->name)) {
00122 AST_LIST_REMOVE_CURRENT(&formats, list);
00123 free(tmp);
00124 res = 0;
00125 }
00126 }
00127 AST_LIST_TRAVERSE_SAFE_END
00128 AST_LIST_UNLOCK(&formats);
00129
00130 if (!res) {
00131 if (option_verbose > 1)
00132 ast_verbose( VERBOSE_PREFIX_2 "Unregistered format %s\n", name);
00133 } else
00134 ast_log(LOG_WARNING, "Tried to unregister format %s, already unregistered\n", name);
00135
00136 return res;
00137 }
00138
00139 int ast_stopstream(struct ast_channel *tmp)
00140 {
00141 ast_channel_lock(tmp);
00142
00143
00144 if (tmp->stream) {
00145 ast_closestream(tmp->stream);
00146 tmp->stream = NULL;
00147 if (tmp->oldwriteformat && ast_set_write_format(tmp, tmp->oldwriteformat))
00148 ast_log(LOG_WARNING, "Unable to restore format back to %d\n", tmp->oldwriteformat);
00149 }
00150
00151 if (tmp->vstream != NULL) {
00152 ast_closestream(tmp->vstream);
00153 tmp->vstream = NULL;
00154 }
00155
00156 ast_channel_unlock(tmp);
00157
00158 return 0;
00159 }
00160
00161 int ast_writestream(struct ast_filestream *fs, struct ast_frame *f)
00162 {
00163 int res = -1;
00164 int alt = 0;
00165 if (f->frametype == AST_FRAME_VIDEO) {
00166 if (fs->fmt->format < AST_FORMAT_MAX_AUDIO) {
00167
00168 if (!fs->vfs && fs->filename) {
00169 const char *type = ast_getformatname(f->subclass & ~0x1);
00170 fs->vfs = ast_writefile(fs->filename, type, NULL, fs->flags, 0, fs->mode);
00171 ast_log(LOG_DEBUG, "Opened video output file\n");
00172 }
00173 if (fs->vfs)
00174 return ast_writestream(fs->vfs, f);
00175
00176 return 0;
00177 } else {
00178
00179 alt = 1;
00180 }
00181 } else if (f->frametype != AST_FRAME_VOICE) {
00182 ast_log(LOG_WARNING, "Tried to write non-voice frame\n");
00183 return -1;
00184 }
00185 if (((fs->fmt->format | alt) & f->subclass) == f->subclass) {
00186 res = fs->fmt->write(fs, f);
00187 if (res < 0)
00188 ast_log(LOG_WARNING, "Natural write failed\n");
00189 else if (res > 0)
00190 ast_log(LOG_WARNING, "Huh??\n");
00191 } else {
00192
00193
00194 if (fs->trans && f->subclass != fs->lastwriteformat) {
00195 ast_translator_free_path(fs->trans);
00196 fs->trans = NULL;
00197 }
00198 if (!fs->trans)
00199 fs->trans = ast_translator_build_path(fs->fmt->format, f->subclass);
00200 if (!fs->trans)
00201 ast_log(LOG_WARNING, "Unable to translate to format %s, source format %s\n",
00202 fs->fmt->name, ast_getformatname(f->subclass));
00203 else {
00204 struct ast_frame *trf;
00205 fs->lastwriteformat = f->subclass;
00206
00207 if ((trf = ast_translate(fs->trans, f, 0))) {
00208 struct ast_frame *cur;
00209
00210
00211 for (cur = trf; cur; cur = AST_LIST_NEXT(cur, frame_list)) {
00212 if ((res = fs->fmt->write(fs, trf))) {
00213 ast_log(LOG_WARNING, "Translated frame write failed\n");
00214 break;
00215 }
00216 }
00217 ast_frfree(trf);
00218 } else {
00219 res = 0;
00220 }
00221 }
00222 }
00223 return res;
00224 }
00225
00226 static int copy(const char *infile, const char *outfile)
00227 {
00228 int ifd, ofd, len;
00229 char buf[4096];
00230
00231 if ((ifd = open(infile, O_RDONLY)) < 0) {
00232 ast_log(LOG_WARNING, "Unable to open %s in read-only mode\n", infile);
00233 return -1;
00234 }
00235 if ((ofd = open(outfile, O_WRONLY | O_TRUNC | O_CREAT, 0600)) < 0) {
00236 ast_log(LOG_WARNING, "Unable to open %s in write-only mode\n", outfile);
00237 close(ifd);
00238 return -1;
00239 }
00240 while ( (len = read(ifd, buf, sizeof(buf)) ) ) {
00241 int res;
00242 if (len < 0) {
00243 ast_log(LOG_WARNING, "Read failed on %s: %s\n", infile, strerror(errno));
00244 break;
00245 }
00246
00247 res = write(ofd, buf, len);
00248 if (res != len) {
00249 ast_log(LOG_WARNING, "Write failed on %s (%d of %d): %s\n", outfile, res, len, strerror(errno));
00250 len = -1;
00251 break;
00252 }
00253 }
00254 close(ifd);
00255 close(ofd);
00256 if (len < 0) {
00257 unlink(outfile);
00258 return -1;
00259 }
00260 return 0;
00261 }
00262
00263
00264
00265
00266
00267
00268
00269 static char *build_filename(const char *filename, const char *ext)
00270 {
00271 char *fn = NULL;
00272
00273 if (!strcmp(ext, "wav49"))
00274 ext = "WAV";
00275
00276 if (filename[0] == '/') {
00277 if (asprintf(&fn, "%s.%s", filename, ext) < 0) {
00278 ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
00279 fn = NULL;
00280 }
00281 } else {
00282 if (asprintf(&fn, "%s/sounds/%s.%s",
00283 ast_config_AST_DATA_DIR, filename, ext) < 0) {
00284 ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
00285 fn = NULL;
00286 }
00287 }
00288 return fn;
00289 }
00290
00291
00292
00293 static int exts_compare(const char *exts, const char *type)
00294 {
00295 char tmp[256];
00296 char *stringp = tmp, *ext;
00297
00298 ast_copy_string(tmp, exts, sizeof(tmp));
00299 while ((ext = strsep(&stringp, "|"))) {
00300 if (!strcmp(ext, type))
00301 return 1;
00302 }
00303
00304 return 0;
00305 }
00306
00307 static void filestream_destructor(void *arg)
00308 {
00309 char *cmd = NULL;
00310 size_t size = 0;
00311 struct ast_filestream *f = arg;
00312
00313
00314 if (f->owner) {
00315 if (f->fmt->format < AST_FORMAT_MAX_AUDIO) {
00316 f->owner->stream = NULL;
00317 AST_SCHED_DEL(f->owner->sched, f->owner->streamid);
00318 #ifdef HAVE_DAHDI
00319 ast_settimeout(f->owner, 0, NULL, NULL);
00320 #endif
00321 } else {
00322 f->owner->vstream = NULL;
00323 AST_SCHED_DEL(f->owner->sched, f->owner->vstreamid);
00324 }
00325 }
00326
00327 if (f->trans)
00328 ast_translator_free_path(f->trans);
00329
00330 if (f->realfilename && f->filename) {
00331 size = strlen(f->filename) + strlen(f->realfilename) + 15;
00332 cmd = alloca(size);
00333 memset(cmd,0,size);
00334 snprintf(cmd,size,"/bin/mv -f %s %s",f->filename,f->realfilename);
00335 ast_safe_system(cmd);
00336 }
00337
00338 if (f->filename)
00339 free(f->filename);
00340 if (f->realfilename)
00341 free(f->realfilename);
00342 if (f->fmt->close) {
00343 void (*closefn)(struct ast_filestream *) = f->fmt->close;
00344 closefn(f);
00345 }
00346 if (f->f)
00347 fclose(f->f);
00348 if (f->vfs)
00349 ast_closestream(f->vfs);
00350 if (f->orig_chan_name)
00351 free((void *) f->orig_chan_name);
00352 ast_module_unref(f->fmt->module);
00353 }
00354
00355 static struct ast_filestream *get_filestream(struct ast_format *fmt, FILE *bfile)
00356 {
00357 struct ast_filestream *s;
00358
00359 int l = sizeof(*s) + fmt->buf_size + fmt->desc_size;
00360 if ( (s = ao2_alloc(l, filestream_destructor)) == NULL)
00361 return NULL;
00362 s->fmt = fmt;
00363 s->f = bfile;
00364
00365 if (fmt->desc_size)
00366 s->_private = ((char *)(s+1)) + fmt->buf_size;
00367 if (fmt->buf_size)
00368 s->buf = (char *)(s+1);
00369 s->fr.src = fmt->name;
00370 return s;
00371 }
00372
00373
00374
00375
00376
00377 enum wrap_fn { WRAP_OPEN, WRAP_REWRITE };
00378
00379 static int fn_wrapper(struct ast_filestream *s, const char *comment, enum wrap_fn mode)
00380 {
00381 struct ast_format *f = s->fmt;
00382 int ret = -1;
00383 int (*openfn)(struct ast_filestream *s);
00384
00385 if (mode == WRAP_OPEN && (openfn = f->open) && openfn(s))
00386 ast_log(LOG_WARNING, "Unable to open format %s\n", f->name);
00387 else if (mode == WRAP_REWRITE && f->rewrite && f->rewrite(s, comment))
00388 ast_log(LOG_WARNING, "Unable to rewrite format %s\n", f->name);
00389 else {
00390
00391 ast_module_ref(f->module);
00392 ret = 0;
00393 }
00394 return ret;
00395 }
00396
00397 static int rewrite_wrapper(struct ast_filestream *s, const char *comment)
00398 {
00399 return fn_wrapper(s, comment, WRAP_REWRITE);
00400 }
00401
00402 static int open_wrapper(struct ast_filestream *s)
00403 {
00404 return fn_wrapper(s, NULL, WRAP_OPEN);
00405 }
00406
00407 enum file_action {
00408 ACTION_EXISTS = 1,
00409 ACTION_DELETE,
00410 ACTION_RENAME,
00411 ACTION_OPEN,
00412 ACTION_COPY
00413 };
00414
00415
00416
00417
00418
00419
00420
00421
00422
00423
00424 static int ast_filehelper(const char *filename, const void *arg2, const char *fmt, const enum file_action action)
00425 {
00426 struct ast_format *f;
00427 int res = (action == ACTION_EXISTS) ? 0 : -1;
00428
00429 if (AST_LIST_LOCK(&formats)) {
00430 ast_log(LOG_WARNING, "Unable to lock format list\n");
00431 return res;
00432 }
00433
00434 AST_LIST_TRAVERSE(&formats, f, list) {
00435 char *stringp, *ext = NULL;
00436
00437 if (fmt && !exts_compare(f->exts, fmt))
00438 continue;
00439
00440
00441
00442
00443
00444 stringp = ast_strdupa(f->exts);
00445 while ( (ext = strsep(&stringp, "|")) ) {
00446 struct stat st;
00447 char *fn = build_filename(filename, ext);
00448
00449 if (fn == NULL)
00450 continue;
00451
00452 if ( stat(fn, &st) ) {
00453 free(fn);
00454 continue;
00455 }
00456
00457
00458
00459 if (action == ACTION_OPEN) {
00460 struct ast_channel *chan = (struct ast_channel *)arg2;
00461 FILE *bfile;
00462 struct ast_filestream *s;
00463
00464 if ( !(chan->writeformat & f->format) &&
00465 !(f->format >= AST_FORMAT_MAX_AUDIO && fmt)) {
00466 free(fn);
00467 continue;
00468 }
00469 if ( (bfile = fopen(fn, "r")) == NULL) {
00470 free(fn);
00471 continue;
00472 }
00473 s = get_filestream(f, bfile);
00474 if (!s) {
00475 fclose(bfile);
00476 free(fn);
00477 continue;
00478 }
00479 if (open_wrapper(s)) {
00480 free(fn);
00481 ast_closestream(s);
00482 continue;
00483 }
00484
00485 res = 1;
00486 s->lasttimeout = -1;
00487 s->fmt = f;
00488 s->trans = NULL;
00489 s->filename = NULL;
00490 if (s->fmt->format < AST_FORMAT_MAX_AUDIO) {
00491 if (chan->stream)
00492 ast_closestream(chan->stream);
00493 chan->stream = s;
00494 } else {
00495 if (chan->vstream)
00496 ast_closestream(chan->vstream);
00497 chan->vstream = s;
00498 }
00499 free(fn);
00500 break;
00501 }
00502 switch (action) {
00503 case ACTION_OPEN:
00504 break;
00505
00506 case ACTION_EXISTS:
00507 res |= f->format;
00508 break;
00509
00510 case ACTION_DELETE:
00511 if ( (res = unlink(fn)) )
00512 ast_log(LOG_WARNING, "unlink(%s) failed: %s\n", fn, strerror(errno));
00513 break;
00514
00515 case ACTION_RENAME:
00516 case ACTION_COPY: {
00517 char *nfn = build_filename((const char *)arg2, ext);
00518 if (!nfn)
00519 ast_log(LOG_WARNING, "Out of memory\n");
00520 else {
00521 res = action == ACTION_COPY ? copy(fn, nfn) : rename(fn, nfn);
00522 if (res)
00523 ast_log(LOG_WARNING, "%s(%s,%s) failed: %s\n",
00524 action == ACTION_COPY ? "copy" : "rename",
00525 fn, nfn, strerror(errno));
00526 free(nfn);
00527 }
00528 }
00529 break;
00530
00531 default:
00532 ast_log(LOG_WARNING, "Unknown helper %d\n", action);
00533 }
00534 free(fn);
00535 }
00536 }
00537 AST_LIST_UNLOCK(&formats);
00538 return res;
00539 }
00540
00541 static int is_absolute_path(const char *filename)
00542 {
00543 return filename[0] == '/';
00544 }
00545
00546 static int fileexists_test(const char *filename, const char *fmt, const char *lang,
00547 char *buf, int buflen)
00548 {
00549 if (buf == NULL) {
00550 return -1;
00551 }
00552
00553 if (ast_language_is_prefix && !is_absolute_path(filename)) {
00554 if (lang) {
00555 snprintf(buf, buflen, "%s/%s", lang, filename);
00556 } else {
00557 snprintf(buf, buflen, "%s", filename);
00558 }
00559 } else {
00560 strcpy(buf, filename);
00561 if (lang) {
00562
00563 const char *c = strrchr(filename, '/');
00564 int offset = c ? c - filename + 1 : 0;
00565 snprintf(buf + offset, buflen - offset, "%s/%s", lang, filename + offset);
00566 }
00567 }
00568
00569 return ast_filehelper(buf, NULL, fmt, ACTION_EXISTS);
00570 }
00571
00572
00573
00574
00575
00576
00577
00578
00579
00580
00581
00582
00583 static int fileexists_core(const char *filename, const char *fmt, const char *preflang,
00584 char *buf, int buflen)
00585 {
00586 int res = -1;
00587 char *lang = NULL;
00588
00589 if (buf == NULL) {
00590 return -1;
00591 }
00592
00593
00594
00595
00596
00597
00598
00599
00600
00601 if (!ast_strlen_zero(preflang)) {
00602
00603 if ((res = fileexists_test(filename, fmt, preflang, buf, buflen)) > 0) {
00604 return res;
00605 } else {
00606
00607 char *postfix = NULL;
00608 postfix = lang = ast_strdupa(preflang);
00609
00610 strsep(&postfix, "_");
00611 if (postfix) {
00612 if ((res = fileexists_test(filename, fmt, lang, buf, buflen)) > 0) {
00613 return res;
00614 }
00615 }
00616 }
00617 }
00618
00619
00620 if ((res = fileexists_test(filename, fmt, NULL, buf, buflen)) > 0) {
00621 return res;
00622 }
00623
00624
00625 if ((ast_strlen_zero(preflang) || strcmp(preflang, DEFAULT_LANGUAGE)) && (ast_strlen_zero(lang) || strcmp(lang, DEFAULT_LANGUAGE))) {
00626 if ((res = fileexists_test(filename, fmt, DEFAULT_LANGUAGE, buf, buflen)) > 0) {
00627 return res;
00628 }
00629 }
00630
00631 return 0;
00632 }
00633
00634 struct ast_filestream *ast_openstream(struct ast_channel *chan, const char *filename, const char *preflang)
00635 {
00636 return ast_openstream_full(chan, filename, preflang, 0);
00637 }
00638
00639 struct ast_filestream *ast_openstream_full(struct ast_channel *chan, const char *filename, const char *preflang, int asis)
00640 {
00641
00642
00643
00644
00645
00646 int fmts, res, buflen;
00647 char *buf;
00648
00649 if (!asis) {
00650
00651 ast_stopstream(chan);
00652 if (chan->generator)
00653 ast_deactivate_generator(chan);
00654 }
00655 if (preflang == NULL)
00656 preflang = "";
00657 buflen = strlen(preflang) + strlen(filename) + 4;
00658 buf = alloca(buflen);
00659 if (buf == NULL)
00660 return NULL;
00661 fmts = fileexists_core(filename, NULL, preflang, buf, buflen);
00662 if (fmts > 0)
00663 fmts &= AST_FORMAT_AUDIO_MASK;
00664 if (fmts < 1) {
00665 ast_log(LOG_WARNING, "File %s does not exist in any format\n", filename);
00666 return NULL;
00667 }
00668 chan->oldwriteformat = chan->writeformat;
00669
00670 res = ast_set_write_format(chan, fmts);
00671 if (res == -1) {
00672 return NULL;
00673 }
00674 res = ast_filehelper(buf, chan, NULL, ACTION_OPEN);
00675 if (res >= 0)
00676 return chan->stream;
00677 return NULL;
00678 }
00679
00680 struct ast_filestream *ast_openvstream(struct ast_channel *chan, const char *filename, const char *preflang)
00681 {
00682
00683
00684
00685 unsigned int format;
00686 char *buf;
00687 int buflen;
00688
00689 if (preflang == NULL)
00690 preflang = "";
00691 buflen = strlen(preflang) + strlen(filename) + 4;
00692 buf = alloca(buflen);
00693 if (buf == NULL)
00694 return NULL;
00695
00696 for (format = AST_FORMAT_MAX_AUDIO << 1; format <= AST_FORMAT_MAX_VIDEO; format = format << 1) {
00697 int fd;
00698 const char *fmt;
00699
00700 if (!(chan->nativeformats & format))
00701 continue;
00702 fmt = ast_getformatname(format);
00703 if ( fileexists_core(filename, fmt, preflang, buf, buflen) < 1)
00704 continue;
00705 fd = ast_filehelper(buf, chan, fmt, ACTION_OPEN);
00706 if (fd >= 0)
00707 return chan->vstream;
00708 ast_log(LOG_WARNING, "File %s has video but couldn't be opened\n", filename);
00709 }
00710 return NULL;
00711 }
00712
00713 static struct ast_frame *read_frame(struct ast_filestream *s, int *whennext)
00714 {
00715 struct ast_frame *fr, *new_fr;
00716
00717 if (!s || !s->fmt) {
00718 return NULL;
00719 }
00720
00721 if (!(fr = s->fmt->read(s, whennext))) {
00722 return NULL;
00723 }
00724
00725 if (!(new_fr = ast_frisolate(fr))) {
00726 ast_frfree(fr);
00727 return NULL;
00728 }
00729
00730 if (new_fr != fr) {
00731 ast_frfree(fr);
00732 fr = new_fr;
00733 }
00734
00735 return fr;
00736 }
00737
00738 struct ast_frame *ast_readframe(struct ast_filestream *s)
00739 {
00740 int whennext = 0;
00741
00742 return read_frame(s, &whennext);
00743 }
00744
00745 enum fsread_res {
00746 FSREAD_FAILURE,
00747 FSREAD_SUCCESS_SCHED,
00748 FSREAD_SUCCESS_NOSCHED,
00749 };
00750
00751 static int ast_fsread_audio(const void *data);
00752
00753 static enum fsread_res ast_readaudio_callback(struct ast_filestream *s)
00754 {
00755 int whennext = 0;
00756
00757 while (!whennext) {
00758 struct ast_frame *fr;
00759
00760 if (s->orig_chan_name && strcasecmp(s->owner->name, s->orig_chan_name)) {
00761 goto return_failure;
00762 }
00763
00764 fr = read_frame(s, &whennext);
00765
00766 if (!fr || ast_write(s->owner, fr) ) {
00767 if (fr) {
00768 ast_log(LOG_WARNING, "Failed to write frame\n");
00769 ast_frfree(fr);
00770 }
00771 goto return_failure;
00772 }
00773
00774 if (fr) {
00775 ast_frfree(fr);
00776 }
00777 }
00778
00779 if (whennext != s->lasttimeout) {
00780 #ifdef HAVE_DAHDI
00781 if (s->owner->timingfd > -1) {
00782 int zap_timer_samples = whennext;
00783 int rate;
00784
00785 if ((rate = ast_format_rate(s->fmt->format)) != 8000) {
00786 float factor;
00787 factor = ((float) rate) / ((float) 8000.0);
00788 zap_timer_samples = (int) ( ((float) zap_timer_samples) / factor );
00789 }
00790 ast_settimeout(s->owner, zap_timer_samples, ast_fsread_audio, s);
00791 } else
00792 #endif
00793 s->owner->streamid = ast_sched_add(s->owner->sched,
00794 whennext / (ast_format_rate(s->fmt->format) / 1000),
00795 ast_fsread_audio, s);
00796 s->lasttimeout = whennext;
00797 return FSREAD_SUCCESS_NOSCHED;
00798 }
00799 return FSREAD_SUCCESS_SCHED;
00800
00801 return_failure:
00802 s->owner->streamid = -1;
00803 #ifdef HAVE_DAHDI
00804 ast_settimeout(s->owner, 0, NULL, NULL);
00805 #endif
00806 return FSREAD_FAILURE;
00807 }
00808
00809 static int ast_fsread_audio(const void *data)
00810 {
00811 struct ast_filestream *fs = (struct ast_filestream *)data;
00812 enum fsread_res res;
00813
00814 res = ast_readaudio_callback(fs);
00815
00816 if (res == FSREAD_SUCCESS_SCHED)
00817 return 1;
00818
00819 return 0;
00820 }
00821
00822 static int ast_fsread_video(const void *data);
00823
00824 static enum fsread_res ast_readvideo_callback(struct ast_filestream *s)
00825 {
00826 int whennext = 0;
00827
00828 while (!whennext) {
00829 struct ast_frame *fr = read_frame(s, &whennext);
00830
00831 if (!fr || ast_write(s->owner, fr) ) {
00832 if (fr) {
00833 ast_log(LOG_WARNING, "Failed to write frame\n");
00834 ast_frfree(fr);
00835 }
00836 s->owner->vstreamid = -1;
00837 return FSREAD_FAILURE;
00838 }
00839
00840 if (fr) {
00841 ast_frfree(fr);
00842 }
00843 }
00844
00845 if (whennext != s->lasttimeout) {
00846 s->owner->vstreamid = ast_sched_add(s->owner->sched,
00847 whennext / (ast_format_rate(s->fmt->format) / 1000),
00848 ast_fsread_video, s);
00849 s->lasttimeout = whennext;
00850 return FSREAD_SUCCESS_NOSCHED;
00851 }
00852
00853 return FSREAD_SUCCESS_SCHED;
00854 }
00855
00856 static int ast_fsread_video(const void *data)
00857 {
00858 struct ast_filestream *fs = (struct ast_filestream *)data;
00859 enum fsread_res res;
00860
00861 res = ast_readvideo_callback(fs);
00862
00863 if (res == FSREAD_SUCCESS_SCHED)
00864 return 1;
00865
00866 return 0;
00867 }
00868
00869 int ast_applystream(struct ast_channel *chan, struct ast_filestream *s)
00870 {
00871 s->owner = chan;
00872 return 0;
00873 }
00874
00875 int ast_playstream(struct ast_filestream *s)
00876 {
00877 enum fsread_res res;
00878
00879 if (s->fmt->format < AST_FORMAT_MAX_AUDIO)
00880 res = ast_readaudio_callback(s);
00881 else
00882 res = ast_readvideo_callback(s);
00883
00884 return (res == FSREAD_FAILURE) ? -1 : 0;
00885 }
00886
00887 int ast_seekstream(struct ast_filestream *fs, off_t sample_offset, int whence)
00888 {
00889 return fs->fmt->seek(fs, sample_offset, whence);
00890 }
00891
00892 int ast_truncstream(struct ast_filestream *fs)
00893 {
00894 return fs->fmt->trunc(fs);
00895 }
00896
00897 off_t ast_tellstream(struct ast_filestream *fs)
00898 {
00899 return fs->fmt->tell(fs);
00900 }
00901
00902 int ast_stream_fastforward(struct ast_filestream *fs, off_t ms)
00903 {
00904 return ast_seekstream(fs, ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
00905 }
00906
00907 int ast_stream_rewind(struct ast_filestream *fs, off_t ms)
00908 {
00909 return ast_seekstream(fs, -ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
00910 }
00911
00912 int ast_closestream(struct ast_filestream *f)
00913 {
00914
00915
00916
00917
00918
00919
00920 if (f->owner) {
00921 if (f->fmt->format < AST_FORMAT_AUDIO_MASK) {
00922 f->owner->stream = NULL;
00923 AST_SCHED_DEL(f->owner->sched, f->owner->streamid);
00924 ast_settimeout(f->owner, 0, NULL, NULL);
00925 } else {
00926 f->owner->vstream = NULL;
00927 AST_SCHED_DEL(f->owner->sched, f->owner->vstreamid);
00928 }
00929 }
00930
00931 ao2_ref(f, -1);
00932 return 0;
00933 }
00934
00935
00936
00937
00938
00939 int ast_fileexists(const char *filename, const char *fmt, const char *preflang)
00940 {
00941 char *buf;
00942 int buflen;
00943
00944 if (preflang == NULL)
00945 preflang = "";
00946 buflen = strlen(preflang) + strlen(filename) + 4;
00947 buf = alloca(buflen);
00948 if (buf == NULL)
00949 return 0;
00950 return fileexists_core(filename, fmt, preflang, buf, buflen);
00951 }
00952
00953 int ast_filedelete(const char *filename, const char *fmt)
00954 {
00955 return ast_filehelper(filename, NULL, fmt, ACTION_DELETE);
00956 }
00957
00958 int ast_filerename(const char *filename, const char *filename2, const char *fmt)
00959 {
00960 return ast_filehelper(filename, filename2, fmt, ACTION_RENAME);
00961 }
00962
00963 int ast_filecopy(const char *filename, const char *filename2, const char *fmt)
00964 {
00965 return ast_filehelper(filename, filename2, fmt, ACTION_COPY);
00966 }
00967
00968 int ast_streamfile(struct ast_channel *chan, const char *filename, const char *preflang)
00969 {
00970 struct ast_filestream *fs;
00971 struct ast_filestream *vfs=NULL;
00972 char fmt[256];
00973
00974 fs = ast_openstream(chan, filename, preflang);
00975 if (fs)
00976 vfs = ast_openvstream(chan, filename, preflang);
00977 if (vfs)
00978 ast_log(LOG_DEBUG, "Ooh, found a video stream, too, format %s\n", ast_getformatname(vfs->fmt->format));
00979 if (fs){
00980 int res;
00981 if (ast_test_flag(chan, AST_FLAG_MASQ_NOSTREAM))
00982 fs->orig_chan_name = ast_strdup(chan->name);
00983 if (ast_applystream(chan, fs))
00984 return -1;
00985 if (vfs && ast_applystream(chan, vfs))
00986 return -1;
00987 res = ast_playstream(fs);
00988 if (!res && vfs)
00989 res = ast_playstream(vfs);
00990 if (option_verbose > 2)
00991 ast_verbose(VERBOSE_PREFIX_3 "<%s> Playing '%s' (language '%s')\n", chan->name, filename, preflang ? preflang : "default");
00992
00993 return res;
00994 }
00995 ast_log(LOG_WARNING, "Unable to open %s (format %s): %s\n", filename, ast_getformatname_multiple(fmt, sizeof(fmt), chan->nativeformats), strerror(errno));
00996 return -1;
00997 }
00998
00999 struct ast_filestream *ast_readfile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
01000 {
01001 FILE *bfile;
01002 struct ast_format *f;
01003 struct ast_filestream *fs = NULL;
01004 char *fn;
01005
01006 if (AST_LIST_LOCK(&formats)) {
01007 ast_log(LOG_WARNING, "Unable to lock format list\n");
01008 return NULL;
01009 }
01010
01011 AST_LIST_TRAVERSE(&formats, f, list) {
01012 fs = NULL;
01013 if (!exts_compare(f->exts, type))
01014 continue;
01015
01016 fn = build_filename(filename, type);
01017 errno = 0;
01018 bfile = fopen(fn, "r");
01019 if (!bfile || (fs = get_filestream(f, bfile)) == NULL ||
01020 open_wrapper(fs) ) {
01021 ast_log(LOG_WARNING, "Unable to open %s\n", fn);
01022 if (fs) {
01023 ast_closestream(fs);
01024 }
01025 fs = NULL;
01026 bfile = NULL;
01027 free(fn);
01028 continue;
01029 }
01030
01031 fs->trans = NULL;
01032 fs->fmt = f;
01033 fs->flags = flags;
01034 fs->mode = mode;
01035 fs->filename = strdup(filename);
01036 fs->vfs = NULL;
01037 break;
01038 }
01039
01040 AST_LIST_UNLOCK(&formats);
01041 if (!fs)
01042 ast_log(LOG_WARNING, "No such format '%s'\n", type);
01043
01044 return fs;
01045 }
01046
01047 struct ast_filestream *ast_writefile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
01048 {
01049 int fd, myflags = 0;
01050
01051 FILE *bfile = NULL;
01052 struct ast_format *f;
01053 struct ast_filestream *fs = NULL;
01054 char *buf = NULL;
01055 size_t size = 0;
01056 int format_found = 0;
01057
01058 if (AST_LIST_LOCK(&formats)) {
01059 ast_log(LOG_WARNING, "Unable to lock format list\n");
01060 return NULL;
01061 }
01062
01063
01064
01065 if (flags & O_APPEND) {
01066 flags &= ~O_APPEND;
01067 } else {
01068 myflags = O_TRUNC;
01069 }
01070
01071 myflags |= O_WRONLY | O_CREAT;
01072
01073
01074
01075
01076 AST_LIST_TRAVERSE(&formats, f, list) {
01077 char *fn, *orig_fn = NULL;
01078 if (fs)
01079 break;
01080
01081 if (!exts_compare(f->exts, type))
01082 continue;
01083 else
01084 format_found = 1;
01085
01086 fn = build_filename(filename, type);
01087 fd = open(fn, flags | myflags, mode);
01088 if (fd > -1) {
01089
01090 bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
01091 if (!bfile) {
01092 ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
01093 close(fd);
01094 fd = -1;
01095 }
01096 }
01097
01098 if (ast_opt_cache_record_files && (fd > -1)) {
01099 char *c;
01100
01101 fclose(bfile);
01102
01103
01104
01105
01106 orig_fn = ast_strdupa(fn);
01107 for (c = fn; *c; c++)
01108 if (*c == '/')
01109 *c = '_';
01110
01111 size = strlen(fn) + strlen(record_cache_dir) + 2;
01112 buf = alloca(size);
01113 strcpy(buf, record_cache_dir);
01114 strcat(buf, "/");
01115 strcat(buf, fn);
01116 free(fn);
01117 fn = buf;
01118 fd = open(fn, flags | myflags, mode);
01119 if (fd > -1) {
01120
01121 bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
01122 if (!bfile) {
01123 ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
01124 close(fd);
01125 fd = -1;
01126 }
01127 }
01128 }
01129 if (fd > -1) {
01130 errno = 0;
01131 fs = get_filestream(f, bfile);
01132 if (!fs || rewrite_wrapper(fs, comment)) {
01133 ast_log(LOG_WARNING, "Unable to rewrite %s\n", fn);
01134 close(fd);
01135 if (orig_fn) {
01136 unlink(fn);
01137 unlink(orig_fn);
01138 }
01139 if (fs) {
01140 ast_closestream(fs);
01141 fs = NULL;
01142 }
01143 continue;
01144 }
01145 fs->trans = NULL;
01146 fs->fmt = f;
01147 fs->flags = flags;
01148 fs->mode = mode;
01149 if (orig_fn) {
01150 fs->realfilename = strdup(orig_fn);
01151 fs->filename = strdup(fn);
01152 } else {
01153 fs->realfilename = NULL;
01154 fs->filename = strdup(filename);
01155 }
01156 fs->vfs = NULL;
01157
01158 f->seek(fs, 0, SEEK_END);
01159 } else if (errno != EEXIST) {
01160 ast_log(LOG_WARNING, "Unable to open file %s: %s\n", fn, strerror(errno));
01161 if (orig_fn)
01162 unlink(orig_fn);
01163 }
01164
01165 if (!buf)
01166 free(fn);
01167 }
01168
01169 AST_LIST_UNLOCK(&formats);
01170
01171 if (!format_found)
01172 ast_log(LOG_WARNING, "No such format '%s'\n", type);
01173
01174 return fs;
01175 }
01176
01177
01178
01179
01180 static int waitstream_core(struct ast_channel *c, const char *breakon,
01181 const char *forward, const char *rewind, int skip_ms,
01182 int audiofd, int cmdfd, const char *context)
01183 {
01184 const char *orig_chan_name = NULL;
01185 int err = 0;
01186
01187 if (!breakon)
01188 breakon = "";
01189 if (!forward)
01190 forward = "";
01191 if (!rewind)
01192 rewind = "";
01193
01194
01195 ast_set_flag(c, AST_FLAG_END_DTMF_ONLY);
01196
01197 if (ast_test_flag(c, AST_FLAG_MASQ_NOSTREAM))
01198 orig_chan_name = ast_strdupa(c->name);
01199
01200 while (c->stream) {
01201 int res;
01202 int ms;
01203
01204 if (orig_chan_name && strcasecmp(orig_chan_name, c->name)) {
01205 ast_stopstream(c);
01206 err = 1;
01207 break;
01208 }
01209
01210 ms = ast_sched_wait(c->sched);
01211
01212 if (ms < 0 && !c->timingfunc) {
01213 ast_stopstream(c);
01214 break;
01215 }
01216 if (ms < 0)
01217 ms = 1000;
01218 if (cmdfd < 0) {
01219 res = ast_waitfor(c, ms);
01220 if (res < 0) {
01221 ast_log(LOG_WARNING, "Select failed (%s)\n", strerror(errno));
01222 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01223 return res;
01224 }
01225 } else {
01226 int outfd;
01227 struct ast_channel *rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms);
01228 if (!rchan && (outfd < 0) && (ms)) {
01229
01230 if (errno == EINTR)
01231 continue;
01232 ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno));
01233 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01234 return -1;
01235 } else if (outfd > -1) {
01236
01237 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01238 return 1;
01239 }
01240
01241 res = rchan ? 1 : 0;
01242 }
01243 if (res > 0) {
01244 struct ast_frame *fr = ast_read(c);
01245 if (!fr) {
01246 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01247 return -1;
01248 }
01249 switch(fr->frametype) {
01250 case AST_FRAME_DTMF_END:
01251 if (context) {
01252 const char exten[2] = { fr->subclass, '\0' };
01253 if (ast_exists_extension(c, context, exten, 1, c->cid.cid_num)) {
01254 res = fr->subclass;
01255 ast_frfree(fr);
01256 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01257 return res;
01258 }
01259 } else {
01260 res = fr->subclass;
01261 if (strchr(forward,res)) {
01262 int eoftest;
01263 ast_stream_fastforward(c->stream, skip_ms);
01264 eoftest = fgetc(c->stream->f);
01265 if (feof(c->stream->f)) {
01266 ast_stream_rewind(c->stream, skip_ms);
01267 } else {
01268 ungetc(eoftest, c->stream->f);
01269 }
01270 } else if (strchr(rewind,res)) {
01271 ast_stream_rewind(c->stream, skip_ms);
01272 } else if (strchr(breakon, res)) {
01273 ast_frfree(fr);
01274 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01275 return res;
01276 }
01277 }
01278 break;
01279 case AST_FRAME_CONTROL:
01280 switch(fr->subclass) {
01281 case AST_CONTROL_HANGUP:
01282 case AST_CONTROL_BUSY:
01283 case AST_CONTROL_CONGESTION:
01284 ast_frfree(fr);
01285 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01286 return -1;
01287 case AST_CONTROL_RINGING:
01288 case AST_CONTROL_ANSWER:
01289 case AST_CONTROL_VIDUPDATE:
01290 case AST_CONTROL_SRCUPDATE:
01291 case AST_CONTROL_SRCCHANGE:
01292 case AST_CONTROL_HOLD:
01293 case AST_CONTROL_UNHOLD:
01294 case AST_CONTROL_PROGRESS:
01295 case AST_CONTROL_PROCEEDING:
01296
01297 break;
01298 default:
01299 ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", fr->subclass);
01300 }
01301 break;
01302 case AST_FRAME_VOICE:
01303
01304 if (audiofd > -1) {
01305 if (write(audiofd, fr->data, fr->datalen) < 0) {
01306 ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno));
01307 }
01308 }
01309 default:
01310
01311 break;
01312 }
01313 ast_frfree(fr);
01314 }
01315 ast_sched_runq(c->sched);
01316 }
01317
01318 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01319
01320 return (err || c->_softhangup) ? -1 : 0;
01321 }
01322
01323 int ast_waitstream_fr(struct ast_channel *c, const char *breakon, const char *forward, const char *rewind, int ms)
01324 {
01325 return waitstream_core(c, breakon, forward, rewind, ms,
01326 -1 , -1 , NULL );
01327 }
01328
01329 int ast_waitstream(struct ast_channel *c, const char *breakon)
01330 {
01331 return waitstream_core(c, breakon, NULL, NULL, 0, -1, -1, NULL);
01332 }
01333
01334 int ast_waitstream_full(struct ast_channel *c, const char *breakon, int audiofd, int cmdfd)
01335 {
01336 return waitstream_core(c, breakon, NULL, NULL, 0,
01337 audiofd, cmdfd, NULL );
01338 }
01339
01340 int ast_waitstream_exten(struct ast_channel *c, const char *context)
01341 {
01342
01343
01344
01345 if (!context)
01346 context = c->context;
01347 return waitstream_core(c, NULL, NULL, NULL, 0,
01348 -1, -1, context);
01349 }
01350
01351
01352
01353
01354
01355
01356 int ast_stream_and_wait(struct ast_channel *chan, const char *file,
01357 const char *language, const char *digits)
01358 {
01359 int res = 0;
01360 if (!ast_strlen_zero(file)) {
01361 res = ast_streamfile(chan, file, language);
01362 if (!res)
01363 res = ast_waitstream(chan, digits);
01364 }
01365 return res;
01366 }
01367
01368 char *ast_format_str_reduce(char *fmts)
01369 {
01370 struct ast_format *f;
01371 struct ast_format *fmts_ptr[AST_MAX_FORMATS];
01372 char *fmts_str[AST_MAX_FORMATS];
01373 char *stringp, *type;
01374 char *orig = fmts;
01375 int i, j, x, first, found = 0;
01376 int len = strlen(fmts) + 1;
01377 int res;
01378
01379 if (AST_LIST_LOCK(&formats)) {
01380 ast_log(LOG_WARNING, "Unable to lock format list\n");
01381 return NULL;
01382 }
01383
01384 stringp = ast_strdupa(fmts);
01385
01386 for (x = 0; (type = strsep(&stringp, "|")) && x < AST_MAX_FORMATS; x++) {
01387 AST_LIST_TRAVERSE(&formats, f, list) {
01388 if (exts_compare(f->exts, type)) {
01389 found = 1;
01390 break;
01391 }
01392 }
01393
01394 fmts_str[x] = type;
01395 if (found) {
01396 fmts_ptr[x] = f;
01397 } else {
01398 fmts_ptr[x] = NULL;
01399 }
01400 }
01401 AST_LIST_UNLOCK(&formats);
01402
01403 first = 1;
01404 for (i = 0; i < x; i++) {
01405
01406 if (!fmts_ptr[i]) {
01407 ast_log(LOG_WARNING, "ignoring unknown format '%s'\n", fmts_str[i]);
01408 continue;
01409 }
01410
01411
01412 if (first) {
01413 res = snprintf(fmts, len, "%s", fmts_str[i]);
01414 fmts += res;
01415 len -= res;
01416 first = 0;
01417 continue;
01418 }
01419
01420 found = 0;
01421 for (j = 0; j < i; j++) {
01422
01423 if (fmts_ptr[j] == fmts_ptr[i]) {
01424 found = 1;
01425 break;
01426 }
01427 }
01428
01429 if (!found) {
01430 res = snprintf(fmts, len, "|%s", fmts_str[i]);
01431 fmts += res;
01432 len -= res;
01433 }
01434 }
01435
01436 if (first) {
01437 ast_log(LOG_WARNING, "no known formats found in format list (%s)\n", orig);
01438 return NULL;
01439 }
01440
01441 return orig;
01442 }
01443
01444 static int show_file_formats(int fd, int argc, char *argv[])
01445 {
01446 #define FORMAT "%-10s %-10s %-20s\n"
01447 #define FORMAT2 "%-10s %-10s %-20s\n"
01448 struct ast_format *f;
01449 int count_fmt = 0;
01450
01451 if (argc != 4)
01452 return RESULT_SHOWUSAGE;
01453 ast_cli(fd, FORMAT, "Format", "Name", "Extensions");
01454
01455 if (AST_LIST_LOCK(&formats)) {
01456 ast_log(LOG_WARNING, "Unable to lock format list\n");
01457 return -1;
01458 }
01459
01460 AST_LIST_TRAVERSE(&formats, f, list) {
01461 ast_cli(fd, FORMAT2, ast_getformatname(f->format), f->name, f->exts);
01462 count_fmt++;
01463 }
01464 AST_LIST_UNLOCK(&formats);
01465 ast_cli(fd, "%d file formats registered.\n", count_fmt);
01466 return RESULT_SUCCESS;
01467 #undef FORMAT
01468 #undef FORMAT2
01469 }
01470
01471 static int show_file_formats_deprecated(int fd, int argc, char *argv[])
01472 {
01473 #define FORMAT "%-10s %-10s %-20s\n"
01474 #define FORMAT2 "%-10s %-10s %-20s\n"
01475 struct ast_format *f;
01476 int count_fmt = 0;
01477
01478 if (argc != 3)
01479 return RESULT_SHOWUSAGE;
01480 ast_cli(fd, FORMAT, "Format", "Name", "Extensions");
01481
01482 if (AST_LIST_LOCK(&formats)) {
01483 ast_log(LOG_WARNING, "Unable to lock format list\n");
01484 return -1;
01485 }
01486
01487 AST_LIST_TRAVERSE(&formats, f, list) {
01488 ast_cli(fd, FORMAT2, ast_getformatname(f->format), f->name, f->exts);
01489 count_fmt++;
01490 }
01491 AST_LIST_UNLOCK(&formats);
01492 ast_cli(fd, "%d file formats registered.\n", count_fmt);
01493 return RESULT_SUCCESS;
01494 #undef FORMAT
01495 #undef FORMAT2
01496 }
01497
01498 char show_file_formats_usage[] =
01499 "Usage: core show file formats\n"
01500 " Displays currently registered file formats (if any)\n";
01501
01502 struct ast_cli_entry cli_show_file_formats_deprecated = {
01503 { "show", "file", "formats" },
01504 show_file_formats_deprecated, NULL,
01505 NULL };
01506
01507 struct ast_cli_entry cli_file[] = {
01508 { { "core", "show", "file", "formats" },
01509 show_file_formats, "Displays file formats",
01510 show_file_formats_usage, NULL, &cli_show_file_formats_deprecated },
01511 };
01512
01513 int ast_file_init(void)
01514 {
01515 ast_cli_register_multiple(cli_file, sizeof(cli_file) / sizeof(struct ast_cli_entry));
01516 return 0;
01517 }