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: 201093 $")
00029
00030 #include <dirent.h>
00031 #include <sys/stat.h>
00032
00033 #include "asterisk/_private.h"
00034 #include "asterisk/paths.h"
00035 #include "asterisk/mod_format.h"
00036 #include "asterisk/cli.h"
00037 #include "asterisk/channel.h"
00038 #include "asterisk/sched.h"
00039 #include "asterisk/translate.h"
00040 #include "asterisk/utils.h"
00041 #include "asterisk/lock.h"
00042 #include "asterisk/app.h"
00043 #include "asterisk/pbx.h"
00044 #include "asterisk/linkedlists.h"
00045 #include "asterisk/module.h"
00046 #include "asterisk/astobj2.h"
00047
00048
00049
00050
00051
00052
00053
00054
00055
00056 int ast_language_is_prefix = 1;
00057
00058 static AST_RWLIST_HEAD_STATIC(formats, ast_format);
00059
00060 int __ast_format_register(const struct ast_format *f, struct ast_module *mod)
00061 {
00062 struct ast_format *tmp;
00063
00064 AST_RWLIST_WRLOCK(&formats);
00065 AST_RWLIST_TRAVERSE(&formats, tmp, list) {
00066 if (!strcasecmp(f->name, tmp->name)) {
00067 AST_RWLIST_UNLOCK(&formats);
00068 ast_log(LOG_WARNING, "Tried to register '%s' format, already registered\n", f->name);
00069 return -1;
00070 }
00071 }
00072 if (!(tmp = ast_calloc(1, sizeof(*tmp)))) {
00073 AST_RWLIST_UNLOCK(&formats);
00074 return -1;
00075 }
00076 *tmp = *f;
00077 tmp->module = mod;
00078 if (tmp->buf_size) {
00079
00080
00081
00082
00083 struct _test_align { void *a, *b; } p;
00084 int align = (char *)&p.b - (char *)&p.a;
00085 tmp->buf_size = ((f->buf_size + align - 1) / align) * align;
00086 }
00087
00088 memset(&tmp->list, 0, sizeof(tmp->list));
00089
00090 AST_RWLIST_INSERT_HEAD(&formats, tmp, list);
00091 AST_RWLIST_UNLOCK(&formats);
00092 ast_verb(2, "Registered file format %s, extension(s) %s\n", f->name, f->exts);
00093
00094 return 0;
00095 }
00096
00097 int ast_format_unregister(const char *name)
00098 {
00099 struct ast_format *tmp;
00100 int res = -1;
00101
00102 AST_RWLIST_WRLOCK(&formats);
00103 AST_RWLIST_TRAVERSE_SAFE_BEGIN(&formats, tmp, list) {
00104 if (!strcasecmp(name, tmp->name)) {
00105 AST_RWLIST_REMOVE_CURRENT(list);
00106 ast_free(tmp);
00107 res = 0;
00108 }
00109 }
00110 AST_RWLIST_TRAVERSE_SAFE_END;
00111 AST_RWLIST_UNLOCK(&formats);
00112
00113 if (!res)
00114 ast_verb(2, "Unregistered format %s\n", name);
00115 else
00116 ast_log(LOG_WARNING, "Tried to unregister format %s, already unregistered\n", name);
00117
00118 return res;
00119 }
00120
00121 int ast_stopstream(struct ast_channel *tmp)
00122 {
00123 ast_channel_lock(tmp);
00124
00125
00126 if (tmp->stream) {
00127 ast_closestream(tmp->stream);
00128 tmp->stream = NULL;
00129 if (tmp->oldwriteformat && ast_set_write_format(tmp, tmp->oldwriteformat))
00130 ast_log(LOG_WARNING, "Unable to restore format back to %d\n", tmp->oldwriteformat);
00131 }
00132
00133 if (tmp->vstream != NULL) {
00134 ast_closestream(tmp->vstream);
00135 tmp->vstream = NULL;
00136 }
00137
00138 ast_channel_unlock(tmp);
00139
00140 return 0;
00141 }
00142
00143 int ast_writestream(struct ast_filestream *fs, struct ast_frame *f)
00144 {
00145 int res = -1;
00146 int alt = 0;
00147 if (f->frametype == AST_FRAME_VIDEO) {
00148 if (fs->fmt->format & AST_FORMAT_AUDIO_MASK) {
00149
00150 if (!fs->vfs && fs->filename) {
00151 const char *type = ast_getformatname(f->subclass & ~0x1);
00152 fs->vfs = ast_writefile(fs->filename, type, NULL, fs->flags, 0, fs->mode);
00153 ast_debug(1, "Opened video output file\n");
00154 }
00155 if (fs->vfs)
00156 return ast_writestream(fs->vfs, f);
00157
00158 return 0;
00159 } else {
00160
00161 alt = 1;
00162 }
00163 } else if (f->frametype != AST_FRAME_VOICE) {
00164 ast_log(LOG_WARNING, "Tried to write non-voice frame\n");
00165 return -1;
00166 }
00167 if (((fs->fmt->format | alt) & f->subclass) == f->subclass) {
00168 res = fs->fmt->write(fs, f);
00169 if (res < 0)
00170 ast_log(LOG_WARNING, "Natural write failed\n");
00171 else if (res > 0)
00172 ast_log(LOG_WARNING, "Huh??\n");
00173 } else {
00174
00175
00176 if (fs->trans && f->subclass != fs->lastwriteformat) {
00177 ast_translator_free_path(fs->trans);
00178 fs->trans = NULL;
00179 }
00180 if (!fs->trans)
00181 fs->trans = ast_translator_build_path(fs->fmt->format, f->subclass);
00182 if (!fs->trans)
00183 ast_log(LOG_WARNING, "Unable to translate to format %s, source format %s\n",
00184 fs->fmt->name, ast_getformatname(f->subclass));
00185 else {
00186 struct ast_frame *trf;
00187 fs->lastwriteformat = f->subclass;
00188
00189 if ((trf = ast_translate(fs->trans, f, 0))) {
00190 struct ast_frame *cur;
00191
00192
00193 for (cur = trf; cur; cur = AST_LIST_NEXT(cur, frame_list)) {
00194 if ((res = fs->fmt->write(fs, trf))) {
00195 ast_log(LOG_WARNING, "Translated frame write failed\n");
00196 break;
00197 }
00198 }
00199 ast_frfree(trf);
00200 } else {
00201 res = 0;
00202 }
00203 }
00204 }
00205 return res;
00206 }
00207
00208 static int copy(const char *infile, const char *outfile)
00209 {
00210 int ifd, ofd, len;
00211 char buf[4096];
00212
00213 if ((ifd = open(infile, O_RDONLY)) < 0) {
00214 ast_log(LOG_WARNING, "Unable to open %s in read-only mode\n", infile);
00215 return -1;
00216 }
00217 if ((ofd = open(outfile, O_WRONLY | O_TRUNC | O_CREAT, AST_FILE_MODE)) < 0) {
00218 ast_log(LOG_WARNING, "Unable to open %s in write-only mode\n", outfile);
00219 close(ifd);
00220 return -1;
00221 }
00222 while ( (len = read(ifd, buf, sizeof(buf)) ) ) {
00223 int res;
00224 if (len < 0) {
00225 ast_log(LOG_WARNING, "Read failed on %s: %s\n", infile, strerror(errno));
00226 break;
00227 }
00228
00229 res = write(ofd, buf, len);
00230 if (res != len) {
00231 ast_log(LOG_WARNING, "Write failed on %s (%d of %d): %s\n", outfile, res, len, strerror(errno));
00232 len = -1;
00233 break;
00234 }
00235 }
00236 close(ifd);
00237 close(ofd);
00238 if (len < 0) {
00239 unlink(outfile);
00240 return -1;
00241 }
00242 return 0;
00243 }
00244
00245
00246
00247
00248
00249
00250
00251 static char *build_filename(const char *filename, const char *ext)
00252 {
00253 char *fn = NULL;
00254
00255 if (!strcmp(ext, "wav49"))
00256 ext = "WAV";
00257
00258 if (filename[0] == '/') {
00259 if (asprintf(&fn, "%s.%s", filename, ext) < 0) {
00260 ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
00261 fn = NULL;
00262 }
00263 } else {
00264 if (asprintf(&fn, "%s/sounds/%s.%s",
00265 ast_config_AST_DATA_DIR, filename, ext) < 0) {
00266 ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
00267 fn = NULL;
00268 }
00269 }
00270 return fn;
00271 }
00272
00273
00274
00275 static int exts_compare(const char *exts, const char *type)
00276 {
00277 char tmp[256];
00278 char *stringp = tmp, *ext;
00279
00280 ast_copy_string(tmp, exts, sizeof(tmp));
00281 while ((ext = strsep(&stringp, "|"))) {
00282 if (!strcmp(ext, type))
00283 return 1;
00284 }
00285
00286 return 0;
00287 }
00288
00289 static void filestream_destructor(void *arg)
00290 {
00291 char *cmd = NULL;
00292 size_t size = 0;
00293 struct ast_filestream *f = arg;
00294
00295
00296 if (f->owner) {
00297 if (f->fmt->format < AST_FORMAT_AUDIO_MASK) {
00298 f->owner->stream = NULL;
00299 AST_SCHED_DEL(f->owner->sched, f->owner->streamid);
00300 #ifdef HAVE_DAHDI
00301 ast_settimeout(f->owner, 0, NULL, NULL);
00302 #endif
00303 } else {
00304 f->owner->vstream = NULL;
00305 AST_SCHED_DEL(f->owner->sched, f->owner->vstreamid);
00306 }
00307 }
00308
00309 if (f->trans)
00310 ast_translator_free_path(f->trans);
00311
00312 if (f->realfilename && f->filename) {
00313 size = strlen(f->filename) + strlen(f->realfilename) + 15;
00314 cmd = alloca(size);
00315 memset(cmd,0,size);
00316 snprintf(cmd,size,"/bin/mv -f %s %s",f->filename,f->realfilename);
00317 ast_safe_system(cmd);
00318 }
00319
00320 if (f->filename)
00321 free(f->filename);
00322 if (f->realfilename)
00323 free(f->realfilename);
00324 if (f->fmt->close) {
00325 void (*closefn)(struct ast_filestream *) = f->fmt->close;
00326 closefn(f);
00327 }
00328 if (f->f)
00329 fclose(f->f);
00330 if (f->vfs)
00331 ast_closestream(f->vfs);
00332 if (f->orig_chan_name)
00333 free((void *) f->orig_chan_name);
00334 ast_module_unref(f->fmt->module);
00335 }
00336
00337 static struct ast_filestream *get_filestream(struct ast_format *fmt, FILE *bfile)
00338 {
00339 struct ast_filestream *s;
00340
00341 int l = sizeof(*s) + fmt->buf_size + fmt->desc_size;
00342 if ( (s = ao2_alloc(l, filestream_destructor)) == NULL)
00343 return NULL;
00344 s->fmt = fmt;
00345 s->f = bfile;
00346
00347 if (fmt->desc_size)
00348 s->_private = ((char *)(s + 1)) + fmt->buf_size;
00349 if (fmt->buf_size)
00350 s->buf = (char *)(s + 1);
00351 s->fr.src = fmt->name;
00352 return s;
00353 }
00354
00355
00356
00357
00358
00359 enum wrap_fn { WRAP_OPEN, WRAP_REWRITE };
00360
00361 static int fn_wrapper(struct ast_filestream *s, const char *comment, enum wrap_fn mode)
00362 {
00363 struct ast_format *f = s->fmt;
00364 int ret = -1;
00365 int (*openfn)(struct ast_filestream *s);
00366
00367 if (mode == WRAP_OPEN && (openfn = f->open) && openfn(s))
00368 ast_log(LOG_WARNING, "Unable to open format %s\n", f->name);
00369 else if (mode == WRAP_REWRITE && f->rewrite && f->rewrite(s, comment))
00370 ast_log(LOG_WARNING, "Unable to rewrite format %s\n", f->name);
00371 else {
00372
00373 ast_module_ref(f->module);
00374 ret = 0;
00375 }
00376 return ret;
00377 }
00378
00379 static int rewrite_wrapper(struct ast_filestream *s, const char *comment)
00380 {
00381 return fn_wrapper(s, comment, WRAP_REWRITE);
00382 }
00383
00384 static int open_wrapper(struct ast_filestream *s)
00385 {
00386 return fn_wrapper(s, NULL, WRAP_OPEN);
00387 }
00388
00389 enum file_action {
00390 ACTION_EXISTS = 1,
00391 ACTION_DELETE,
00392 ACTION_RENAME,
00393 ACTION_OPEN,
00394 ACTION_COPY
00395 };
00396
00397
00398
00399
00400
00401
00402
00403
00404
00405
00406 static int ast_filehelper(const char *filename, const void *arg2, const char *fmt, const enum file_action action)
00407 {
00408 struct ast_format *f;
00409 int res = (action == ACTION_EXISTS) ? 0 : -1;
00410
00411 AST_RWLIST_RDLOCK(&formats);
00412
00413 AST_RWLIST_TRAVERSE(&formats, f, list) {
00414 char *stringp, *ext = NULL;
00415
00416 if (fmt && !exts_compare(f->exts, fmt))
00417 continue;
00418
00419
00420
00421
00422
00423 stringp = ast_strdupa(f->exts);
00424 while ( (ext = strsep(&stringp, "|")) ) {
00425 struct stat st;
00426 char *fn = build_filename(filename, ext);
00427
00428 if (fn == NULL)
00429 continue;
00430
00431 if ( stat(fn, &st) ) {
00432 ast_free(fn);
00433 continue;
00434 }
00435
00436
00437
00438 if (action == ACTION_OPEN) {
00439 struct ast_channel *chan = (struct ast_channel *)arg2;
00440 FILE *bfile;
00441 struct ast_filestream *s;
00442
00443 if ( !(chan->writeformat & f->format) &&
00444 !(f->format & AST_FORMAT_AUDIO_MASK && fmt)) {
00445 ast_free(fn);
00446 continue;
00447 }
00448 if ( (bfile = fopen(fn, "r")) == NULL) {
00449 ast_free(fn);
00450 continue;
00451 }
00452 s = get_filestream(f, bfile);
00453 if (!s) {
00454 fclose(bfile);
00455 ast_free(fn);
00456 continue;
00457 }
00458 if (open_wrapper(s)) {
00459 ast_free(fn);
00460 ast_closestream(s);
00461 continue;
00462 }
00463
00464 res = 1;
00465 s->lasttimeout = -1;
00466 s->fmt = f;
00467 s->trans = NULL;
00468 s->filename = NULL;
00469 if (s->fmt->format & AST_FORMAT_AUDIO_MASK) {
00470 if (chan->stream)
00471 ast_closestream(chan->stream);
00472 chan->stream = s;
00473 } else {
00474 if (chan->vstream)
00475 ast_closestream(chan->vstream);
00476 chan->vstream = s;
00477 }
00478 ast_free(fn);
00479 break;
00480 }
00481 switch (action) {
00482 case ACTION_OPEN:
00483 break;
00484
00485 case ACTION_EXISTS:
00486 res |= f->format;
00487 break;
00488
00489 case ACTION_DELETE:
00490 if ( (res = unlink(fn)) )
00491 ast_log(LOG_WARNING, "unlink(%s) failed: %s\n", fn, strerror(errno));
00492 break;
00493
00494 case ACTION_RENAME:
00495 case ACTION_COPY: {
00496 char *nfn = build_filename((const char *)arg2, ext);
00497 if (!nfn)
00498 ast_log(LOG_WARNING, "Out of memory\n");
00499 else {
00500 res = action == ACTION_COPY ? copy(fn, nfn) : rename(fn, nfn);
00501 if (res)
00502 ast_log(LOG_WARNING, "%s(%s,%s) failed: %s\n",
00503 action == ACTION_COPY ? "copy" : "rename",
00504 fn, nfn, strerror(errno));
00505 ast_free(nfn);
00506 }
00507 }
00508 break;
00509
00510 default:
00511 ast_log(LOG_WARNING, "Unknown helper %d\n", action);
00512 }
00513 ast_free(fn);
00514 }
00515 }
00516 AST_RWLIST_UNLOCK(&formats);
00517 return res;
00518 }
00519
00520 static int is_absolute_path(const char *filename)
00521 {
00522 return filename[0] == '/';
00523 }
00524
00525 static int fileexists_test(const char *filename, const char *fmt, const char *lang,
00526 char *buf, int buflen)
00527 {
00528 if (buf == NULL) {
00529 return -1;
00530 }
00531
00532 if (ast_language_is_prefix && !is_absolute_path(filename)) {
00533 if (lang) {
00534 snprintf(buf, buflen, "%s/%s", lang, filename);
00535 } else {
00536 snprintf(buf, buflen, "%s", filename);
00537 }
00538 } else {
00539 strcpy(buf, filename);
00540 if (lang) {
00541
00542 const char *c = strrchr(filename, '/');
00543 int offset = c ? c - filename + 1 : 0;
00544 snprintf(buf + offset, buflen - offset, "%s/%s", lang, filename + offset);
00545 }
00546 }
00547
00548 return ast_filehelper(buf, NULL, fmt, ACTION_EXISTS);
00549 }
00550
00551
00552
00553
00554
00555
00556
00557
00558
00559
00560
00561
00562 static int fileexists_core(const char *filename, const char *fmt, const char *preflang,
00563 char *buf, int buflen)
00564 {
00565 int res = -1;
00566 char *lang = NULL;
00567
00568 if (buf == NULL) {
00569 return -1;
00570 }
00571
00572
00573
00574
00575
00576
00577
00578
00579
00580 if (!ast_strlen_zero(preflang)) {
00581
00582 if ((res = fileexists_test(filename, fmt, preflang, buf, buflen)) > 0) {
00583 return res;
00584 } else {
00585
00586 char *postfix = NULL;
00587 postfix = lang = ast_strdupa(preflang);
00588
00589 strsep(&postfix, "_");
00590 if (postfix) {
00591 if ((res = fileexists_test(filename, fmt, lang, buf, buflen)) > 0) {
00592 return res;
00593 }
00594 }
00595 }
00596 }
00597
00598
00599 if ((res = fileexists_test(filename, fmt, NULL, buf, buflen)) > 0) {
00600 return res;
00601 }
00602
00603
00604 if ((ast_strlen_zero(preflang) || strcmp(preflang, DEFAULT_LANGUAGE)) && (ast_strlen_zero(lang) || strcmp(lang, DEFAULT_LANGUAGE))) {
00605 if ((res = fileexists_test(filename, fmt, DEFAULT_LANGUAGE, buf, buflen)) > 0) {
00606 return res;
00607 }
00608 }
00609
00610 return 0;
00611 }
00612
00613 struct ast_filestream *ast_openstream(struct ast_channel *chan, const char *filename, const char *preflang)
00614 {
00615 return ast_openstream_full(chan, filename, preflang, 0);
00616 }
00617
00618 struct ast_filestream *ast_openstream_full(struct ast_channel *chan, const char *filename, const char *preflang, int asis)
00619 {
00620
00621
00622
00623
00624
00625 int fmts, res, buflen;
00626 char *buf;
00627
00628 if (!asis) {
00629
00630 ast_stopstream(chan);
00631 if (chan->generator)
00632 ast_deactivate_generator(chan);
00633 }
00634 if (preflang == NULL)
00635 preflang = "";
00636 buflen = strlen(preflang) + strlen(filename) + 4;
00637 buf = alloca(buflen);
00638 if (buf == NULL)
00639 return NULL;
00640 fmts = fileexists_core(filename, NULL, preflang, buf, buflen);
00641 if (fmts > 0)
00642 fmts &= AST_FORMAT_AUDIO_MASK;
00643 if (fmts < 1) {
00644 ast_log(LOG_WARNING, "File %s does not exist in any format\n", filename);
00645 return NULL;
00646 }
00647 chan->oldwriteformat = chan->writeformat;
00648
00649 res = ast_set_write_format(chan, fmts);
00650 res = ast_filehelper(buf, chan, NULL, ACTION_OPEN);
00651 if (res >= 0)
00652 return chan->stream;
00653 return NULL;
00654 }
00655
00656 struct ast_filestream *ast_openvstream(struct ast_channel *chan, const char *filename, const char *preflang)
00657 {
00658
00659
00660
00661 unsigned int format;
00662 char *buf;
00663 int buflen;
00664
00665 if (preflang == NULL)
00666 preflang = "";
00667 buflen = strlen(preflang) + strlen(filename) + 4;
00668 buf = alloca(buflen);
00669 if (buf == NULL)
00670 return NULL;
00671
00672 for (format = AST_FORMAT_AUDIO_MASK + 1; format <= AST_FORMAT_VIDEO_MASK; format = format << 1) {
00673 int fd;
00674 const char *fmt;
00675
00676 if (!(chan->nativeformats & format))
00677 continue;
00678 fmt = ast_getformatname(format);
00679 if ( fileexists_core(filename, fmt, preflang, buf, buflen) < 1)
00680 continue;
00681 fd = ast_filehelper(buf, chan, fmt, ACTION_OPEN);
00682 if (fd >= 0)
00683 return chan->vstream;
00684 ast_log(LOG_WARNING, "File %s has video but couldn't be opened\n", filename);
00685 }
00686 return NULL;
00687 }
00688
00689 struct ast_frame *ast_readframe(struct ast_filestream *s)
00690 {
00691 struct ast_frame *f = NULL;
00692 int whennext = 0;
00693 if (s && s->fmt)
00694 f = s->fmt->read(s, &whennext);
00695 if (f) {
00696 ast_set_flag(f, AST_FRFLAG_FROM_FILESTREAM);
00697 ao2_ref(s, +1);
00698 }
00699 return f;
00700 }
00701
00702 enum fsread_res {
00703 FSREAD_FAILURE,
00704 FSREAD_SUCCESS_SCHED,
00705 FSREAD_SUCCESS_NOSCHED,
00706 };
00707
00708 static int ast_fsread_audio(const void *data);
00709
00710 static enum fsread_res ast_readaudio_callback(struct ast_filestream *s)
00711 {
00712 int whennext = 0;
00713
00714 while (!whennext) {
00715 struct ast_frame *fr;
00716
00717 if (s->orig_chan_name && strcasecmp(s->owner->name, s->orig_chan_name))
00718 goto return_failure;
00719
00720 fr = s->fmt->read(s, &whennext);
00721 if (fr) {
00722 ast_set_flag(fr, AST_FRFLAG_FROM_FILESTREAM);
00723 ao2_ref(s, +1);
00724 }
00725 if (!fr || ast_write(s->owner, fr) ) {
00726 if (fr) {
00727 ast_log(LOG_WARNING, "Failed to write frame\n");
00728 ast_frfree(fr);
00729 }
00730 goto return_failure;
00731 }
00732 if (fr) {
00733 ast_frfree(fr);
00734 }
00735 }
00736 if (whennext != s->lasttimeout) {
00737 #ifdef HAVE_DAHDI
00738 if (s->owner->timingfd > -1) {
00739 int dahdi_timer_samples = whennext;
00740 int rate;
00741
00742 if ((rate = ast_format_rate(s->fmt->format)) != 8000) {
00743 float factor;
00744 factor = ((float) rate) / ((float) 8000.0);
00745 dahdi_timer_samples = (int) ( ((float) dahdi_timer_samples) / factor );
00746 }
00747 ast_settimeout(s->owner, dahdi_timer_samples, ast_fsread_audio, s);
00748 } else
00749 #endif
00750 s->owner->streamid = ast_sched_add(s->owner->sched,
00751 whennext / (ast_format_rate(s->fmt->format) / 1000), ast_fsread_audio, s);
00752 s->lasttimeout = whennext;
00753 return FSREAD_SUCCESS_NOSCHED;
00754 }
00755 return FSREAD_SUCCESS_SCHED;
00756
00757 return_failure:
00758 s->owner->streamid = -1;
00759 #ifdef HAVE_DAHDI
00760 ast_settimeout(s->owner, 0, NULL, NULL);
00761 #endif
00762 return FSREAD_FAILURE;
00763 }
00764
00765 static int ast_fsread_audio(const void *data)
00766 {
00767 struct ast_filestream *fs = (struct ast_filestream *)data;
00768 enum fsread_res res;
00769
00770 res = ast_readaudio_callback(fs);
00771
00772 if (res == FSREAD_SUCCESS_SCHED)
00773 return 1;
00774
00775 return 0;
00776 }
00777
00778 static int ast_fsread_video(const void *data);
00779
00780 static enum fsread_res ast_readvideo_callback(struct ast_filestream *s)
00781 {
00782 int whennext = 0;
00783
00784 while (!whennext) {
00785 struct ast_frame *fr = s->fmt->read(s, &whennext);
00786 if (fr) {
00787 ast_set_flag(fr, AST_FRFLAG_FROM_FILESTREAM);
00788 ao2_ref(s, +1);
00789 }
00790 if (!fr || ast_write(s->owner, fr) ) {
00791 if (fr) {
00792 ast_log(LOG_WARNING, "Failed to write frame\n");
00793 ast_frfree(fr);
00794 }
00795 s->owner->vstreamid = -1;
00796 return FSREAD_FAILURE;
00797 }
00798 if (fr) {
00799 ast_frfree(fr);
00800 }
00801 }
00802
00803 if (whennext != s->lasttimeout) {
00804 s->owner->vstreamid = ast_sched_add(s->owner->sched,
00805 whennext / (ast_format_rate(s->fmt->format) / 1000),
00806 ast_fsread_video, s);
00807 s->lasttimeout = whennext;
00808 return FSREAD_SUCCESS_NOSCHED;
00809 }
00810
00811 return FSREAD_SUCCESS_SCHED;
00812 }
00813
00814 static int ast_fsread_video(const void *data)
00815 {
00816 struct ast_filestream *fs = (struct ast_filestream *)data;
00817 enum fsread_res res;
00818
00819 res = ast_readvideo_callback(fs);
00820
00821 if (res == FSREAD_SUCCESS_SCHED)
00822 return 1;
00823
00824 return 0;
00825 }
00826
00827 int ast_applystream(struct ast_channel *chan, struct ast_filestream *s)
00828 {
00829 s->owner = chan;
00830 return 0;
00831 }
00832
00833 int ast_playstream(struct ast_filestream *s)
00834 {
00835 enum fsread_res res;
00836
00837 if (s->fmt->format & AST_FORMAT_AUDIO_MASK)
00838 res = ast_readaudio_callback(s);
00839 else
00840 res = ast_readvideo_callback(s);
00841
00842 return (res == FSREAD_FAILURE) ? -1 : 0;
00843 }
00844
00845 int ast_seekstream(struct ast_filestream *fs, off_t sample_offset, int whence)
00846 {
00847 return fs->fmt->seek(fs, sample_offset, whence);
00848 }
00849
00850 int ast_truncstream(struct ast_filestream *fs)
00851 {
00852 return fs->fmt->trunc(fs);
00853 }
00854
00855 off_t ast_tellstream(struct ast_filestream *fs)
00856 {
00857 return fs->fmt->tell(fs);
00858 }
00859
00860 int ast_stream_fastforward(struct ast_filestream *fs, off_t ms)
00861 {
00862 return ast_seekstream(fs, ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
00863 }
00864
00865 int ast_stream_rewind(struct ast_filestream *fs, off_t ms)
00866 {
00867 return ast_seekstream(fs, -ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
00868 }
00869
00870 int ast_closestream(struct ast_filestream *f)
00871 {
00872 if (ast_test_flag(&f->fr, AST_FRFLAG_FROM_FILESTREAM)) {
00873
00874
00875
00876
00877
00878
00879
00880
00881
00882 ao2_ref(f, -1);
00883 return 0;
00884 }
00885
00886 ao2_ref(f, -1);
00887 return 0;
00888 }
00889
00890
00891
00892
00893
00894 int ast_fileexists(const char *filename, const char *fmt, const char *preflang)
00895 {
00896 char *buf;
00897 int buflen;
00898
00899 if (preflang == NULL)
00900 preflang = "";
00901 buflen = strlen(preflang) + strlen(filename) + 4;
00902 buf = alloca(buflen);
00903 if (buf == NULL)
00904 return 0;
00905 return fileexists_core(filename, fmt, preflang, buf, buflen);
00906 }
00907
00908 int ast_filedelete(const char *filename, const char *fmt)
00909 {
00910 return ast_filehelper(filename, NULL, fmt, ACTION_DELETE);
00911 }
00912
00913 int ast_filerename(const char *filename, const char *filename2, const char *fmt)
00914 {
00915 return ast_filehelper(filename, filename2, fmt, ACTION_RENAME);
00916 }
00917
00918 int ast_filecopy(const char *filename, const char *filename2, const char *fmt)
00919 {
00920 return ast_filehelper(filename, filename2, fmt, ACTION_COPY);
00921 }
00922
00923 int ast_streamfile(struct ast_channel *chan, const char *filename, const char *preflang)
00924 {
00925 struct ast_filestream *fs;
00926 struct ast_filestream *vfs=NULL;
00927 char fmt[256];
00928
00929 fs = ast_openstream(chan, filename, preflang);
00930 if (fs)
00931 vfs = ast_openvstream(chan, filename, preflang);
00932 if (vfs) {
00933 ast_debug(1, "Ooh, found a video stream, too, format %s\n", ast_getformatname(vfs->fmt->format));
00934 }
00935 if (fs){
00936 int res;
00937 if (ast_test_flag(chan, AST_FLAG_MASQ_NOSTREAM))
00938 fs->orig_chan_name = ast_strdup(chan->name);
00939 if (ast_applystream(chan, fs))
00940 return -1;
00941 if (vfs && ast_applystream(chan, vfs))
00942 return -1;
00943 res = ast_playstream(fs);
00944 if (!res && vfs)
00945 res = ast_playstream(vfs);
00946 ast_verb(3, "<%s> Playing '%s.%s' (language '%s')\n", chan->name, filename, ast_getformatname(chan->writeformat), preflang ? preflang : "default");
00947
00948 return res;
00949 }
00950 ast_log(LOG_WARNING, "Unable to open %s (format %s): %s\n", filename, ast_getformatname_multiple(fmt, sizeof(fmt), chan->nativeformats), strerror(errno));
00951 return -1;
00952 }
00953
00954 struct ast_filestream *ast_readfile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
00955 {
00956 FILE *bfile;
00957 struct ast_format *f;
00958 struct ast_filestream *fs = NULL;
00959 char *fn;
00960 int format_found = 0;
00961
00962 AST_RWLIST_RDLOCK(&formats);
00963
00964 AST_RWLIST_TRAVERSE(&formats, f, list) {
00965 fs = NULL;
00966 if (!exts_compare(f->exts, type))
00967 continue;
00968 else
00969 format_found = 1;
00970
00971 fn = build_filename(filename, type);
00972 errno = 0;
00973 bfile = fopen(fn, "r");
00974
00975 if (!bfile || (fs = get_filestream(f, bfile)) == NULL || open_wrapper(fs) ) {
00976 ast_log(LOG_WARNING, "Unable to open %s\n", fn);
00977 if (fs) {
00978 ast_closestream(fs);
00979 }
00980 fs = NULL;
00981 bfile = NULL;
00982 ast_free(fn);
00983 break;
00984 }
00985
00986 fs->trans = NULL;
00987 fs->fmt = f;
00988 fs->flags = flags;
00989 fs->mode = mode;
00990 fs->filename = ast_strdup(filename);
00991 fs->vfs = NULL;
00992 break;
00993 }
00994
00995 AST_RWLIST_UNLOCK(&formats);
00996 if (!format_found)
00997 ast_log(LOG_WARNING, "No such format '%s'\n", type);
00998
00999 return fs;
01000 }
01001
01002 struct ast_filestream *ast_writefile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
01003 {
01004 int fd, myflags = 0;
01005
01006 FILE *bfile = NULL;
01007 struct ast_format *f;
01008 struct ast_filestream *fs = NULL;
01009 char *buf = NULL;
01010 size_t size = 0;
01011 int format_found = 0;
01012
01013 AST_RWLIST_RDLOCK(&formats);
01014
01015
01016
01017 if (flags & O_APPEND) {
01018 flags &= ~O_APPEND;
01019 } else {
01020 myflags = O_TRUNC;
01021 }
01022
01023 myflags |= O_WRONLY | O_CREAT;
01024
01025
01026
01027
01028 AST_RWLIST_TRAVERSE(&formats, f, list) {
01029 char *fn, *orig_fn = NULL;
01030 if (fs)
01031 break;
01032
01033 if (!exts_compare(f->exts, type))
01034 continue;
01035 else
01036 format_found = 1;
01037
01038 fn = build_filename(filename, type);
01039 fd = open(fn, flags | myflags, mode);
01040 if (fd > -1) {
01041
01042 bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
01043 if (!bfile) {
01044 ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
01045 close(fd);
01046 fd = -1;
01047 }
01048 }
01049
01050 if (ast_opt_cache_record_files && (fd > -1)) {
01051 char *c;
01052
01053 fclose(bfile);
01054
01055
01056
01057
01058 orig_fn = ast_strdupa(fn);
01059 for (c = fn; *c; c++)
01060 if (*c == '/')
01061 *c = '_';
01062
01063 size = strlen(fn) + strlen(record_cache_dir) + 2;
01064 buf = alloca(size);
01065 strcpy(buf, record_cache_dir);
01066 strcat(buf, "/");
01067 strcat(buf, fn);
01068 ast_free(fn);
01069 fn = buf;
01070 fd = open(fn, flags | myflags, mode);
01071 if (fd > -1) {
01072
01073 bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
01074 if (!bfile) {
01075 ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
01076 close(fd);
01077 fd = -1;
01078 }
01079 }
01080 }
01081 if (fd > -1) {
01082 errno = 0;
01083 fs = get_filestream(f, bfile);
01084 if (!fs || rewrite_wrapper(fs, comment)) {
01085 ast_log(LOG_WARNING, "Unable to rewrite %s\n", fn);
01086 close(fd);
01087 if (orig_fn) {
01088 unlink(fn);
01089 unlink(orig_fn);
01090 }
01091 if (fs) {
01092 ast_closestream(fs);
01093 fs = NULL;
01094 }
01095 continue;
01096 }
01097 fs->trans = NULL;
01098 fs->fmt = f;
01099 fs->flags = flags;
01100 fs->mode = mode;
01101 if (orig_fn) {
01102 fs->realfilename = ast_strdup(orig_fn);
01103 fs->filename = ast_strdup(fn);
01104 } else {
01105 fs->realfilename = NULL;
01106 fs->filename = ast_strdup(filename);
01107 }
01108 fs->vfs = NULL;
01109
01110 f->seek(fs, 0, SEEK_END);
01111 } else if (errno != EEXIST) {
01112 ast_log(LOG_WARNING, "Unable to open file %s: %s\n", fn, strerror(errno));
01113 if (orig_fn)
01114 unlink(orig_fn);
01115 }
01116
01117 if (!buf)
01118 ast_free(fn);
01119 }
01120
01121 AST_RWLIST_UNLOCK(&formats);
01122
01123 if (!format_found)
01124 ast_log(LOG_WARNING, "No such format '%s'\n", type);
01125
01126 return fs;
01127 }
01128
01129
01130
01131
01132 static int waitstream_core(struct ast_channel *c, const char *breakon,
01133 const char *forward, const char *rewind, int skip_ms,
01134 int audiofd, int cmdfd, const char *context)
01135 {
01136 const char *orig_chan_name = NULL;
01137 int err = 0;
01138
01139 if (!breakon)
01140 breakon = "";
01141 if (!forward)
01142 forward = "";
01143 if (!rewind)
01144 rewind = "";
01145
01146
01147 ast_set_flag(c, AST_FLAG_END_DTMF_ONLY);
01148
01149 if (ast_test_flag(c, AST_FLAG_MASQ_NOSTREAM))
01150 orig_chan_name = ast_strdupa(c->name);
01151
01152 while (c->stream) {
01153 int res;
01154 int ms;
01155
01156 if (orig_chan_name && strcasecmp(orig_chan_name, c->name)) {
01157 ast_stopstream(c);
01158 err = 1;
01159 break;
01160 }
01161
01162 ms = ast_sched_wait(c->sched);
01163
01164 if (ms < 0 && !c->timingfunc) {
01165 ast_stopstream(c);
01166 break;
01167 }
01168 if (ms < 0)
01169 ms = 1000;
01170 if (cmdfd < 0) {
01171 res = ast_waitfor(c, ms);
01172 if (res < 0) {
01173 ast_log(LOG_WARNING, "Select failed (%s)\n", strerror(errno));
01174 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01175 return res;
01176 }
01177 } else {
01178 int outfd;
01179 struct ast_channel *rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms);
01180 if (!rchan && (outfd < 0) && (ms)) {
01181
01182 if (errno == EINTR)
01183 continue;
01184 ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno));
01185 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01186 return -1;
01187 } else if (outfd > -1) {
01188
01189 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01190 return 1;
01191 }
01192
01193 res = rchan ? 1 : 0;
01194 }
01195 if (res > 0) {
01196 struct ast_frame *fr = ast_read(c);
01197 if (!fr) {
01198 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01199 return -1;
01200 }
01201 switch (fr->frametype) {
01202 case AST_FRAME_DTMF_END:
01203 if (context) {
01204 const char exten[2] = { fr->subclass, '\0' };
01205 if (ast_exists_extension(c, context, exten, 1, c->cid.cid_num)) {
01206 res = fr->subclass;
01207 ast_frfree(fr);
01208 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01209 return res;
01210 }
01211 } else {
01212 res = fr->subclass;
01213 if (strchr(forward, res)) {
01214 ast_stream_fastforward(c->stream, skip_ms);
01215 } else if (strchr(rewind, res)) {
01216 ast_stream_rewind(c->stream, skip_ms);
01217 } else if (strchr(breakon, res)) {
01218 ast_frfree(fr);
01219 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01220 return res;
01221 }
01222 }
01223 break;
01224 case AST_FRAME_CONTROL:
01225 switch (fr->subclass) {
01226 case AST_CONTROL_HANGUP:
01227 case AST_CONTROL_BUSY:
01228 case AST_CONTROL_CONGESTION:
01229 ast_frfree(fr);
01230 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01231 return -1;
01232 case AST_CONTROL_RINGING:
01233 case AST_CONTROL_ANSWER:
01234 case AST_CONTROL_VIDUPDATE:
01235 case AST_CONTROL_SRCUPDATE:
01236 case AST_CONTROL_HOLD:
01237 case AST_CONTROL_UNHOLD:
01238 case -1:
01239
01240 break;
01241 default:
01242 ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", fr->subclass);
01243 }
01244 break;
01245 case AST_FRAME_VOICE:
01246
01247 if (audiofd > -1) {
01248 if (write(audiofd, fr->data, fr->datalen) < 0) {
01249 ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno));
01250 }
01251 }
01252 default:
01253
01254 break;
01255 }
01256 ast_frfree(fr);
01257 }
01258 ast_sched_runq(c->sched);
01259 }
01260
01261 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01262
01263 return (err || c->_softhangup) ? -1 : 0;
01264 }
01265
01266 int ast_waitstream_fr(struct ast_channel *c, const char *breakon, const char *forward, const char *rewind, int ms)
01267 {
01268 return waitstream_core(c, breakon, forward, rewind, ms,
01269 -1 , -1 , NULL );
01270 }
01271
01272 int ast_waitstream(struct ast_channel *c, const char *breakon)
01273 {
01274 return waitstream_core(c, breakon, NULL, NULL, 0, -1, -1, NULL);
01275 }
01276
01277 int ast_waitstream_full(struct ast_channel *c, const char *breakon, int audiofd, int cmdfd)
01278 {
01279 return waitstream_core(c, breakon, NULL, NULL, 0,
01280 audiofd, cmdfd, NULL );
01281 }
01282
01283 int ast_waitstream_exten(struct ast_channel *c, const char *context)
01284 {
01285
01286
01287
01288 if (!context)
01289 context = c->context;
01290 return waitstream_core(c, NULL, NULL, NULL, 0,
01291 -1, -1, context);
01292 }
01293
01294 void ast_filestream_frame_freed(struct ast_frame *fr)
01295 {
01296 struct ast_filestream *fs;
01297
01298 ast_clear_flag(fr, AST_FRFLAG_FROM_FILESTREAM);
01299
01300 fs = (struct ast_filestream *) (((char *) fr) - offsetof(struct ast_filestream, fr));
01301
01302 ao2_ref(fs, -1);
01303 }
01304
01305
01306
01307
01308
01309
01310 int ast_stream_and_wait(struct ast_channel *chan, const char *file, const char *digits)
01311 {
01312 int res = 0;
01313 if (!ast_strlen_zero(file)) {
01314 res = ast_streamfile(chan, file, chan->language);
01315 if (!res) {
01316 res = ast_waitstream(chan, digits);
01317 }
01318 }
01319 return res;
01320 }
01321
01322 static char *handle_cli_core_show_file_formats(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
01323 {
01324 #define FORMAT "%-10s %-10s %-20s\n"
01325 #define FORMAT2 "%-10s %-10s %-20s\n"
01326 struct ast_format *f;
01327 int count_fmt = 0;
01328
01329 switch (cmd) {
01330 case CLI_INIT:
01331 e->command = "core show file formats";
01332 e->usage =
01333 "Usage: core show file formats\n"
01334 " Displays currently registered file formats (if any).\n";
01335 return NULL;
01336 case CLI_GENERATE:
01337 return NULL;
01338 }
01339
01340 if (a->argc != 4)
01341 return CLI_SHOWUSAGE;
01342
01343 ast_cli(a->fd, FORMAT, "Format", "Name", "Extensions");
01344 ast_cli(a->fd, FORMAT, "------", "----", "----------");
01345
01346 AST_RWLIST_RDLOCK(&formats);
01347 AST_RWLIST_TRAVERSE(&formats, f, list) {
01348 ast_cli(a->fd, FORMAT2, ast_getformatname(f->format), f->name, f->exts);
01349 count_fmt++;
01350 }
01351 AST_RWLIST_UNLOCK(&formats);
01352 ast_cli(a->fd, "%d file formats registered.\n", count_fmt);
01353 return CLI_SUCCESS;
01354 #undef FORMAT
01355 #undef FORMAT2
01356 }
01357
01358 struct ast_cli_entry cli_file[] = {
01359 AST_CLI_DEFINE(handle_cli_core_show_file_formats, "Displays file formats")
01360 };
01361
01362 int ast_file_init(void)
01363 {
01364 ast_cli_register_multiple(cli_file, sizeof(cli_file) / sizeof(struct ast_cli_entry));
01365 return 0;
01366 }