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00026 #include "asterisk.h"
00027
00028 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 222878 $")
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
00057
00058
00059
00060
00061
00062
00063
00064
00065 int ast_language_is_prefix;
00066
00067 static AST_LIST_HEAD_STATIC(formats, ast_format);
00068
00069 int __ast_format_register(const struct ast_format *f, struct ast_module *mod)
00070 {
00071 struct ast_format *tmp;
00072
00073 if (AST_LIST_LOCK(&formats)) {
00074 ast_log(LOG_WARNING, "Unable to lock format list\n");
00075 return -1;
00076 }
00077 AST_LIST_TRAVERSE(&formats, tmp, list) {
00078 if (!strcasecmp(f->name, tmp->name)) {
00079 AST_LIST_UNLOCK(&formats);
00080 ast_log(LOG_WARNING, "Tried to register '%s' format, already registered\n", f->name);
00081 return -1;
00082 }
00083 }
00084 if (!(tmp = ast_calloc(1, sizeof(*tmp)))) {
00085 AST_LIST_UNLOCK(&formats);
00086 return -1;
00087 }
00088 *tmp = *f;
00089 tmp->module = mod;
00090 if (tmp->buf_size) {
00091
00092
00093
00094
00095 struct _test_align { void *a, *b; } p;
00096 int align = (char *)&p.b - (char *)&p.a;
00097 tmp->buf_size = ((f->buf_size + align - 1)/align)*align;
00098 }
00099
00100 memset(&tmp->list, 0, sizeof(tmp->list));
00101
00102 AST_LIST_INSERT_HEAD(&formats, tmp, list);
00103 AST_LIST_UNLOCK(&formats);
00104 if (option_verbose > 1)
00105 ast_verbose( VERBOSE_PREFIX_2 "Registered file format %s, extension(s) %s\n", f->name, f->exts);
00106
00107 return 0;
00108 }
00109
00110 int ast_format_unregister(const char *name)
00111 {
00112 struct ast_format *tmp;
00113 int res = -1;
00114
00115 if (AST_LIST_LOCK(&formats)) {
00116 ast_log(LOG_WARNING, "Unable to lock format list\n");
00117 return -1;
00118 }
00119 AST_LIST_TRAVERSE_SAFE_BEGIN(&formats, tmp, list) {
00120 if (!strcasecmp(name, tmp->name)) {
00121 AST_LIST_REMOVE_CURRENT(&formats, list);
00122 free(tmp);
00123 res = 0;
00124 }
00125 }
00126 AST_LIST_TRAVERSE_SAFE_END
00127 AST_LIST_UNLOCK(&formats);
00128
00129 if (!res) {
00130 if (option_verbose > 1)
00131 ast_verbose( VERBOSE_PREFIX_2 "Unregistered format %s\n", name);
00132 } else
00133 ast_log(LOG_WARNING, "Tried to unregister format %s, already unregistered\n", name);
00134
00135 return res;
00136 }
00137
00138 int ast_stopstream(struct ast_channel *tmp)
00139 {
00140 ast_channel_lock(tmp);
00141
00142
00143 if (tmp->stream) {
00144 ast_closestream(tmp->stream);
00145 tmp->stream = NULL;
00146 if (tmp->oldwriteformat && ast_set_write_format(tmp, tmp->oldwriteformat))
00147 ast_log(LOG_WARNING, "Unable to restore format back to %d\n", tmp->oldwriteformat);
00148 }
00149
00150 if (tmp->vstream != NULL) {
00151 ast_closestream(tmp->vstream);
00152 tmp->vstream = NULL;
00153 }
00154
00155 ast_channel_unlock(tmp);
00156
00157 return 0;
00158 }
00159
00160 int ast_writestream(struct ast_filestream *fs, struct ast_frame *f)
00161 {
00162 int res = -1;
00163 int alt = 0;
00164 if (f->frametype == AST_FRAME_VIDEO) {
00165 if (fs->fmt->format < AST_FORMAT_MAX_AUDIO) {
00166
00167 if (!fs->vfs && fs->filename) {
00168 const char *type = ast_getformatname(f->subclass & ~0x1);
00169 fs->vfs = ast_writefile(fs->filename, type, NULL, fs->flags, 0, fs->mode);
00170 ast_log(LOG_DEBUG, "Opened video output file\n");
00171 }
00172 if (fs->vfs)
00173 return ast_writestream(fs->vfs, f);
00174
00175 return 0;
00176 } else {
00177
00178 alt = 1;
00179 }
00180 } else if (f->frametype != AST_FRAME_VOICE) {
00181 ast_log(LOG_WARNING, "Tried to write non-voice frame\n");
00182 return -1;
00183 }
00184 if (((fs->fmt->format | alt) & f->subclass) == f->subclass) {
00185 res = fs->fmt->write(fs, f);
00186 if (res < 0)
00187 ast_log(LOG_WARNING, "Natural write failed\n");
00188 else if (res > 0)
00189 ast_log(LOG_WARNING, "Huh??\n");
00190 } else {
00191
00192
00193 if (fs->trans && f->subclass != fs->lastwriteformat) {
00194 ast_translator_free_path(fs->trans);
00195 fs->trans = NULL;
00196 }
00197 if (!fs->trans)
00198 fs->trans = ast_translator_build_path(fs->fmt->format, f->subclass);
00199 if (!fs->trans)
00200 ast_log(LOG_WARNING, "Unable to translate to format %s, source format %s\n",
00201 fs->fmt->name, ast_getformatname(f->subclass));
00202 else {
00203 struct ast_frame *trf;
00204 fs->lastwriteformat = f->subclass;
00205
00206 if ((trf = ast_translate(fs->trans, f, 0))) {
00207 struct ast_frame *cur;
00208
00209
00210 for (cur = trf; cur; cur = AST_LIST_NEXT(cur, frame_list)) {
00211 if ((res = fs->fmt->write(fs, trf))) {
00212 ast_log(LOG_WARNING, "Translated frame write failed\n");
00213 break;
00214 }
00215 }
00216 ast_frfree(trf);
00217 } else {
00218 res = 0;
00219 }
00220 }
00221 }
00222 return res;
00223 }
00224
00225 static int copy(const char *infile, const char *outfile)
00226 {
00227 int ifd, ofd, len;
00228 char buf[4096];
00229
00230 if ((ifd = open(infile, O_RDONLY)) < 0) {
00231 ast_log(LOG_WARNING, "Unable to open %s in read-only mode\n", infile);
00232 return -1;
00233 }
00234 if ((ofd = open(outfile, O_WRONLY | O_TRUNC | O_CREAT, 0600)) < 0) {
00235 ast_log(LOG_WARNING, "Unable to open %s in write-only mode\n", outfile);
00236 close(ifd);
00237 return -1;
00238 }
00239 while ( (len = read(ifd, buf, sizeof(buf)) ) ) {
00240 int res;
00241 if (len < 0) {
00242 ast_log(LOG_WARNING, "Read failed on %s: %s\n", infile, strerror(errno));
00243 break;
00244 }
00245
00246 res = write(ofd, buf, len);
00247 if (res != len) {
00248 ast_log(LOG_WARNING, "Write failed on %s (%d of %d): %s\n", outfile, res, len, strerror(errno));
00249 len = -1;
00250 break;
00251 }
00252 }
00253 close(ifd);
00254 close(ofd);
00255 if (len < 0) {
00256 unlink(outfile);
00257 return -1;
00258 }
00259 return 0;
00260 }
00261
00262
00263
00264
00265
00266
00267
00268 static char *build_filename(const char *filename, const char *ext)
00269 {
00270 char *fn = NULL;
00271
00272 if (!strcmp(ext, "wav49"))
00273 ext = "WAV";
00274
00275 if (filename[0] == '/') {
00276 if (asprintf(&fn, "%s.%s", filename, ext) < 0) {
00277 ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
00278 fn = NULL;
00279 }
00280 } else {
00281 if (asprintf(&fn, "%s/sounds/%s.%s",
00282 ast_config_AST_DATA_DIR, filename, ext) < 0) {
00283 ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
00284 fn = NULL;
00285 }
00286 }
00287 return fn;
00288 }
00289
00290
00291
00292 static int exts_compare(const char *exts, const char *type)
00293 {
00294 char tmp[256];
00295 char *stringp = tmp, *ext;
00296
00297 ast_copy_string(tmp, exts, sizeof(tmp));
00298 while ((ext = strsep(&stringp, "|"))) {
00299 if (!strcmp(ext, type))
00300 return 1;
00301 }
00302
00303 return 0;
00304 }
00305
00306 static void filestream_destructor(void *arg)
00307 {
00308 char *cmd = NULL;
00309 size_t size = 0;
00310 struct ast_filestream *f = arg;
00311
00312
00313 if (f->owner) {
00314 if (f->fmt->format < AST_FORMAT_MAX_AUDIO) {
00315 f->owner->stream = NULL;
00316 AST_SCHED_DEL(f->owner->sched, f->owner->streamid);
00317 #ifdef HAVE_DAHDI
00318 ast_settimeout(f->owner, 0, NULL, NULL);
00319 #endif
00320 } else {
00321 f->owner->vstream = NULL;
00322 AST_SCHED_DEL(f->owner->sched, f->owner->vstreamid);
00323 }
00324 }
00325
00326 if (f->trans)
00327 ast_translator_free_path(f->trans);
00328
00329 if (f->realfilename && f->filename) {
00330 size = strlen(f->filename) + strlen(f->realfilename) + 15;
00331 cmd = alloca(size);
00332 memset(cmd,0,size);
00333 snprintf(cmd,size,"/bin/mv -f %s %s",f->filename,f->realfilename);
00334 ast_safe_system(cmd);
00335 }
00336
00337 if (f->filename)
00338 free(f->filename);
00339 if (f->realfilename)
00340 free(f->realfilename);
00341 if (f->fmt->close) {
00342 void (*closefn)(struct ast_filestream *) = f->fmt->close;
00343 closefn(f);
00344 }
00345 if (f->f)
00346 fclose(f->f);
00347 if (f->vfs)
00348 ast_closestream(f->vfs);
00349 if (f->orig_chan_name)
00350 free((void *) f->orig_chan_name);
00351 ast_module_unref(f->fmt->module);
00352 }
00353
00354 static struct ast_filestream *get_filestream(struct ast_format *fmt, FILE *bfile)
00355 {
00356 struct ast_filestream *s;
00357
00358 int l = sizeof(*s) + fmt->buf_size + fmt->desc_size;
00359 if ( (s = ao2_alloc(l, filestream_destructor)) == NULL)
00360 return NULL;
00361 s->fmt = fmt;
00362 s->f = bfile;
00363
00364 if (fmt->desc_size)
00365 s->_private = ((char *)(s+1)) + fmt->buf_size;
00366 if (fmt->buf_size)
00367 s->buf = (char *)(s+1);
00368 s->fr.src = fmt->name;
00369 return s;
00370 }
00371
00372
00373
00374
00375
00376 enum wrap_fn { WRAP_OPEN, WRAP_REWRITE };
00377
00378 static int fn_wrapper(struct ast_filestream *s, const char *comment, enum wrap_fn mode)
00379 {
00380 struct ast_format *f = s->fmt;
00381 int ret = -1;
00382 int (*openfn)(struct ast_filestream *s);
00383
00384 if (mode == WRAP_OPEN && (openfn = f->open) && openfn(s))
00385 ast_log(LOG_WARNING, "Unable to open format %s\n", f->name);
00386 else if (mode == WRAP_REWRITE && f->rewrite && f->rewrite(s, comment))
00387 ast_log(LOG_WARNING, "Unable to rewrite format %s\n", f->name);
00388 else {
00389
00390 ast_module_ref(f->module);
00391 ret = 0;
00392 }
00393 return ret;
00394 }
00395
00396 static int rewrite_wrapper(struct ast_filestream *s, const char *comment)
00397 {
00398 return fn_wrapper(s, comment, WRAP_REWRITE);
00399 }
00400
00401 static int open_wrapper(struct ast_filestream *s)
00402 {
00403 return fn_wrapper(s, NULL, WRAP_OPEN);
00404 }
00405
00406 enum file_action {
00407 ACTION_EXISTS = 1,
00408 ACTION_DELETE,
00409 ACTION_RENAME,
00410 ACTION_OPEN,
00411 ACTION_COPY
00412 };
00413
00414
00415
00416
00417
00418
00419
00420
00421
00422
00423 static int ast_filehelper(const char *filename, const void *arg2, const char *fmt, const enum file_action action)
00424 {
00425 struct ast_format *f;
00426 int res = (action == ACTION_EXISTS) ? 0 : -1;
00427
00428 if (AST_LIST_LOCK(&formats)) {
00429 ast_log(LOG_WARNING, "Unable to lock format list\n");
00430 return res;
00431 }
00432
00433 AST_LIST_TRAVERSE(&formats, f, list) {
00434 char *stringp, *ext = NULL;
00435
00436 if (fmt && !exts_compare(f->exts, fmt))
00437 continue;
00438
00439
00440
00441
00442
00443 stringp = ast_strdupa(f->exts);
00444 while ( (ext = strsep(&stringp, "|")) ) {
00445 struct stat st;
00446 char *fn = build_filename(filename, ext);
00447
00448 if (fn == NULL)
00449 continue;
00450
00451 if ( stat(fn, &st) ) {
00452 free(fn);
00453 continue;
00454 }
00455
00456
00457
00458 if (action == ACTION_OPEN) {
00459 struct ast_channel *chan = (struct ast_channel *)arg2;
00460 FILE *bfile;
00461 struct ast_filestream *s;
00462
00463 if ( !(chan->writeformat & f->format) &&
00464 !(f->format >= AST_FORMAT_MAX_AUDIO && fmt)) {
00465 free(fn);
00466 continue;
00467 }
00468 if ( (bfile = fopen(fn, "r")) == NULL) {
00469 free(fn);
00470 continue;
00471 }
00472 s = get_filestream(f, bfile);
00473 if (!s) {
00474 fclose(bfile);
00475 free(fn);
00476 continue;
00477 }
00478 if (open_wrapper(s)) {
00479 free(fn);
00480 ast_closestream(s);
00481 continue;
00482 }
00483
00484 res = 1;
00485 s->lasttimeout = -1;
00486 s->fmt = f;
00487 s->trans = NULL;
00488 s->filename = NULL;
00489 if (s->fmt->format < AST_FORMAT_MAX_AUDIO) {
00490 if (chan->stream)
00491 ast_closestream(chan->stream);
00492 chan->stream = s;
00493 } else {
00494 if (chan->vstream)
00495 ast_closestream(chan->vstream);
00496 chan->vstream = s;
00497 }
00498 free(fn);
00499 break;
00500 }
00501 switch (action) {
00502 case ACTION_OPEN:
00503 break;
00504
00505 case ACTION_EXISTS:
00506 res |= f->format;
00507 break;
00508
00509 case ACTION_DELETE:
00510 if ( (res = unlink(fn)) )
00511 ast_log(LOG_WARNING, "unlink(%s) failed: %s\n", fn, strerror(errno));
00512 break;
00513
00514 case ACTION_RENAME:
00515 case ACTION_COPY: {
00516 char *nfn = build_filename((const char *)arg2, ext);
00517 if (!nfn)
00518 ast_log(LOG_WARNING, "Out of memory\n");
00519 else {
00520 res = action == ACTION_COPY ? copy(fn, nfn) : rename(fn, nfn);
00521 if (res)
00522 ast_log(LOG_WARNING, "%s(%s,%s) failed: %s\n",
00523 action == ACTION_COPY ? "copy" : "rename",
00524 fn, nfn, strerror(errno));
00525 free(nfn);
00526 }
00527 }
00528 break;
00529
00530 default:
00531 ast_log(LOG_WARNING, "Unknown helper %d\n", action);
00532 }
00533 free(fn);
00534 }
00535 }
00536 AST_LIST_UNLOCK(&formats);
00537 return res;
00538 }
00539
00540 static int is_absolute_path(const char *filename)
00541 {
00542 return filename[0] == '/';
00543 }
00544
00545 static int fileexists_test(const char *filename, const char *fmt, const char *lang,
00546 char *buf, int buflen)
00547 {
00548 if (buf == NULL) {
00549 return -1;
00550 }
00551
00552 if (ast_language_is_prefix && !is_absolute_path(filename)) {
00553 if (lang) {
00554 snprintf(buf, buflen, "%s/%s", lang, filename);
00555 } else {
00556 snprintf(buf, buflen, "%s", filename);
00557 }
00558 } else {
00559 strcpy(buf, filename);
00560 if (lang) {
00561
00562 const char *c = strrchr(filename, '/');
00563 int offset = c ? c - filename + 1 : 0;
00564 snprintf(buf + offset, buflen - offset, "%s/%s", lang, filename + offset);
00565 }
00566 }
00567
00568 return ast_filehelper(buf, NULL, fmt, ACTION_EXISTS);
00569 }
00570
00571
00572
00573
00574
00575
00576
00577
00578
00579
00580
00581
00582 static int fileexists_core(const char *filename, const char *fmt, const char *preflang,
00583 char *buf, int buflen)
00584 {
00585 int res = -1;
00586 char *lang = NULL;
00587
00588 if (buf == NULL) {
00589 return -1;
00590 }
00591
00592
00593
00594
00595
00596
00597
00598
00599
00600 if (!ast_strlen_zero(preflang)) {
00601
00602 if ((res = fileexists_test(filename, fmt, preflang, buf, buflen)) > 0) {
00603 return res;
00604 } else {
00605
00606 char *postfix = NULL;
00607 postfix = lang = ast_strdupa(preflang);
00608
00609 strsep(&postfix, "_");
00610 if (postfix) {
00611 if ((res = fileexists_test(filename, fmt, lang, buf, buflen)) > 0) {
00612 return res;
00613 }
00614 }
00615 }
00616 }
00617
00618
00619 if ((res = fileexists_test(filename, fmt, NULL, buf, buflen)) > 0) {
00620 return res;
00621 }
00622
00623
00624 if ((ast_strlen_zero(preflang) || strcmp(preflang, DEFAULT_LANGUAGE)) && (ast_strlen_zero(lang) || strcmp(lang, DEFAULT_LANGUAGE))) {
00625 if ((res = fileexists_test(filename, fmt, DEFAULT_LANGUAGE, buf, buflen)) > 0) {
00626 return res;
00627 }
00628 }
00629
00630 return 0;
00631 }
00632
00633 struct ast_filestream *ast_openstream(struct ast_channel *chan, const char *filename, const char *preflang)
00634 {
00635 return ast_openstream_full(chan, filename, preflang, 0);
00636 }
00637
00638 struct ast_filestream *ast_openstream_full(struct ast_channel *chan, const char *filename, const char *preflang, int asis)
00639 {
00640
00641
00642
00643
00644
00645 int fmts, res, buflen;
00646 char *buf;
00647
00648 if (!asis) {
00649
00650 ast_stopstream(chan);
00651 if (chan->generator)
00652 ast_deactivate_generator(chan);
00653 }
00654 if (preflang == NULL)
00655 preflang = "";
00656 buflen = strlen(preflang) + strlen(filename) + 4;
00657 buf = alloca(buflen);
00658 if (buf == NULL)
00659 return NULL;
00660 fmts = fileexists_core(filename, NULL, preflang, buf, buflen);
00661 if (fmts > 0)
00662 fmts &= AST_FORMAT_AUDIO_MASK;
00663 if (fmts < 1) {
00664 ast_log(LOG_WARNING, "File %s does not exist in any format\n", filename);
00665 return NULL;
00666 }
00667 chan->oldwriteformat = chan->writeformat;
00668
00669 res = ast_set_write_format(chan, fmts);
00670 res = ast_filehelper(buf, chan, NULL, ACTION_OPEN);
00671 if (res >= 0)
00672 return chan->stream;
00673 return NULL;
00674 }
00675
00676 struct ast_filestream *ast_openvstream(struct ast_channel *chan, const char *filename, const char *preflang)
00677 {
00678
00679
00680
00681 unsigned int format;
00682 char *buf;
00683 int buflen;
00684
00685 if (preflang == NULL)
00686 preflang = "";
00687 buflen = strlen(preflang) + strlen(filename) + 4;
00688 buf = alloca(buflen);
00689 if (buf == NULL)
00690 return NULL;
00691
00692 for (format = AST_FORMAT_MAX_AUDIO << 1; format <= AST_FORMAT_MAX_VIDEO; format = format << 1) {
00693 int fd;
00694 const char *fmt;
00695
00696 if (!(chan->nativeformats & format))
00697 continue;
00698 fmt = ast_getformatname(format);
00699 if ( fileexists_core(filename, fmt, preflang, buf, buflen) < 1)
00700 continue;
00701 fd = ast_filehelper(buf, chan, fmt, ACTION_OPEN);
00702 if (fd >= 0)
00703 return chan->vstream;
00704 ast_log(LOG_WARNING, "File %s has video but couldn't be opened\n", filename);
00705 }
00706 return NULL;
00707 }
00708
00709 static struct ast_frame *read_frame(struct ast_filestream *s, int *whennext)
00710 {
00711 struct ast_frame *fr, *new_fr;
00712
00713 if (!s || !s->fmt) {
00714 return NULL;
00715 }
00716
00717 if (!(fr = s->fmt->read(s, whennext))) {
00718 return NULL;
00719 }
00720
00721 if (!(new_fr = ast_frisolate(fr))) {
00722 ast_frfree(fr);
00723 return NULL;
00724 }
00725
00726 if (new_fr != fr) {
00727 ast_frfree(fr);
00728 fr = new_fr;
00729 }
00730
00731 return fr;
00732 }
00733
00734 struct ast_frame *ast_readframe(struct ast_filestream *s)
00735 {
00736 int whennext = 0;
00737
00738 return read_frame(s, &whennext);
00739 }
00740
00741 enum fsread_res {
00742 FSREAD_FAILURE,
00743 FSREAD_SUCCESS_SCHED,
00744 FSREAD_SUCCESS_NOSCHED,
00745 };
00746
00747 static int ast_fsread_audio(const void *data);
00748
00749 static enum fsread_res ast_readaudio_callback(struct ast_filestream *s)
00750 {
00751 int whennext = 0;
00752
00753 while (!whennext) {
00754 struct ast_frame *fr;
00755
00756 if (s->orig_chan_name && strcasecmp(s->owner->name, s->orig_chan_name)) {
00757 goto return_failure;
00758 }
00759
00760 fr = read_frame(s, &whennext);
00761
00762 if (!fr || ast_write(s->owner, fr) ) {
00763 if (fr) {
00764 ast_log(LOG_WARNING, "Failed to write frame\n");
00765 ast_frfree(fr);
00766 }
00767 goto return_failure;
00768 }
00769
00770 if (fr) {
00771 ast_frfree(fr);
00772 }
00773 }
00774
00775 if (whennext != s->lasttimeout) {
00776 #ifdef HAVE_DAHDI
00777 if (s->owner->timingfd > -1) {
00778 int zap_timer_samples = whennext;
00779 int rate;
00780
00781 if ((rate = ast_format_rate(s->fmt->format)) != 8000) {
00782 float factor;
00783 factor = ((float) rate) / ((float) 8000.0);
00784 zap_timer_samples = (int) ( ((float) zap_timer_samples) / factor );
00785 }
00786 ast_settimeout(s->owner, zap_timer_samples, ast_fsread_audio, s);
00787 } else
00788 #endif
00789 s->owner->streamid = ast_sched_add(s->owner->sched,
00790 whennext / (ast_format_rate(s->fmt->format) / 1000),
00791 ast_fsread_audio, s);
00792 s->lasttimeout = whennext;
00793 return FSREAD_SUCCESS_NOSCHED;
00794 }
00795 return FSREAD_SUCCESS_SCHED;
00796
00797 return_failure:
00798 s->owner->streamid = -1;
00799 #ifdef HAVE_DAHDI
00800 ast_settimeout(s->owner, 0, NULL, NULL);
00801 #endif
00802 return FSREAD_FAILURE;
00803 }
00804
00805 static int ast_fsread_audio(const void *data)
00806 {
00807 struct ast_filestream *fs = (struct ast_filestream *)data;
00808 enum fsread_res res;
00809
00810 res = ast_readaudio_callback(fs);
00811
00812 if (res == FSREAD_SUCCESS_SCHED)
00813 return 1;
00814
00815 return 0;
00816 }
00817
00818 static int ast_fsread_video(const void *data);
00819
00820 static enum fsread_res ast_readvideo_callback(struct ast_filestream *s)
00821 {
00822 int whennext = 0;
00823
00824 while (!whennext) {
00825 struct ast_frame *fr = read_frame(s, &whennext);
00826
00827 if (!fr || ast_write(s->owner, fr) ) {
00828 if (fr) {
00829 ast_log(LOG_WARNING, "Failed to write frame\n");
00830 ast_frfree(fr);
00831 }
00832 s->owner->vstreamid = -1;
00833 return FSREAD_FAILURE;
00834 }
00835
00836 if (fr) {
00837 ast_frfree(fr);
00838 }
00839 }
00840
00841 if (whennext != s->lasttimeout) {
00842 s->owner->vstreamid = ast_sched_add(s->owner->sched,
00843 whennext / (ast_format_rate(s->fmt->format) / 1000),
00844 ast_fsread_video, s);
00845 s->lasttimeout = whennext;
00846 return FSREAD_SUCCESS_NOSCHED;
00847 }
00848
00849 return FSREAD_SUCCESS_SCHED;
00850 }
00851
00852 static int ast_fsread_video(const void *data)
00853 {
00854 struct ast_filestream *fs = (struct ast_filestream *)data;
00855 enum fsread_res res;
00856
00857 res = ast_readvideo_callback(fs);
00858
00859 if (res == FSREAD_SUCCESS_SCHED)
00860 return 1;
00861
00862 return 0;
00863 }
00864
00865 int ast_applystream(struct ast_channel *chan, struct ast_filestream *s)
00866 {
00867 s->owner = chan;
00868 return 0;
00869 }
00870
00871 int ast_playstream(struct ast_filestream *s)
00872 {
00873 enum fsread_res res;
00874
00875 if (s->fmt->format < AST_FORMAT_MAX_AUDIO)
00876 res = ast_readaudio_callback(s);
00877 else
00878 res = ast_readvideo_callback(s);
00879
00880 return (res == FSREAD_FAILURE) ? -1 : 0;
00881 }
00882
00883 int ast_seekstream(struct ast_filestream *fs, off_t sample_offset, int whence)
00884 {
00885 return fs->fmt->seek(fs, sample_offset, whence);
00886 }
00887
00888 int ast_truncstream(struct ast_filestream *fs)
00889 {
00890 return fs->fmt->trunc(fs);
00891 }
00892
00893 off_t ast_tellstream(struct ast_filestream *fs)
00894 {
00895 return fs->fmt->tell(fs);
00896 }
00897
00898 int ast_stream_fastforward(struct ast_filestream *fs, off_t ms)
00899 {
00900 return ast_seekstream(fs, ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
00901 }
00902
00903 int ast_stream_rewind(struct ast_filestream *fs, off_t ms)
00904 {
00905 return ast_seekstream(fs, -ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
00906 }
00907
00908 int ast_closestream(struct ast_filestream *f)
00909 {
00910
00911
00912
00913
00914
00915
00916 if (f->owner) {
00917 if (f->fmt->format < AST_FORMAT_AUDIO_MASK) {
00918 f->owner->stream = NULL;
00919 AST_SCHED_DEL(f->owner->sched, f->owner->streamid);
00920 ast_settimeout(f->owner, 0, NULL, NULL);
00921 } else {
00922 f->owner->vstream = NULL;
00923 AST_SCHED_DEL(f->owner->sched, f->owner->vstreamid);
00924 }
00925 }
00926
00927 ao2_ref(f, -1);
00928 return 0;
00929 }
00930
00931
00932
00933
00934
00935 int ast_fileexists(const char *filename, const char *fmt, const char *preflang)
00936 {
00937 char *buf;
00938 int buflen;
00939
00940 if (preflang == NULL)
00941 preflang = "";
00942 buflen = strlen(preflang) + strlen(filename) + 4;
00943 buf = alloca(buflen);
00944 if (buf == NULL)
00945 return 0;
00946 return fileexists_core(filename, fmt, preflang, buf, buflen);
00947 }
00948
00949 int ast_filedelete(const char *filename, const char *fmt)
00950 {
00951 return ast_filehelper(filename, NULL, fmt, ACTION_DELETE);
00952 }
00953
00954 int ast_filerename(const char *filename, const char *filename2, const char *fmt)
00955 {
00956 return ast_filehelper(filename, filename2, fmt, ACTION_RENAME);
00957 }
00958
00959 int ast_filecopy(const char *filename, const char *filename2, const char *fmt)
00960 {
00961 return ast_filehelper(filename, filename2, fmt, ACTION_COPY);
00962 }
00963
00964 int ast_streamfile(struct ast_channel *chan, const char *filename, const char *preflang)
00965 {
00966 struct ast_filestream *fs;
00967 struct ast_filestream *vfs=NULL;
00968 char fmt[256];
00969
00970 fs = ast_openstream(chan, filename, preflang);
00971 if (fs)
00972 vfs = ast_openvstream(chan, filename, preflang);
00973 if (vfs)
00974 ast_log(LOG_DEBUG, "Ooh, found a video stream, too, format %s\n", ast_getformatname(vfs->fmt->format));
00975 if (fs){
00976 int res;
00977 if (ast_test_flag(chan, AST_FLAG_MASQ_NOSTREAM))
00978 fs->orig_chan_name = ast_strdup(chan->name);
00979 if (ast_applystream(chan, fs))
00980 return -1;
00981 if (vfs && ast_applystream(chan, vfs))
00982 return -1;
00983 res = ast_playstream(fs);
00984 if (!res && vfs)
00985 res = ast_playstream(vfs);
00986 if (option_verbose > 2)
00987 ast_verbose(VERBOSE_PREFIX_3 "<%s> Playing '%s' (language '%s')\n", chan->name, filename, preflang ? preflang : "default");
00988
00989 return res;
00990 }
00991 ast_log(LOG_WARNING, "Unable to open %s (format %s): %s\n", filename, ast_getformatname_multiple(fmt, sizeof(fmt), chan->nativeformats), strerror(errno));
00992 return -1;
00993 }
00994
00995 struct ast_filestream *ast_readfile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
00996 {
00997 FILE *bfile;
00998 struct ast_format *f;
00999 struct ast_filestream *fs = NULL;
01000 char *fn;
01001
01002 if (AST_LIST_LOCK(&formats)) {
01003 ast_log(LOG_WARNING, "Unable to lock format list\n");
01004 return NULL;
01005 }
01006
01007 AST_LIST_TRAVERSE(&formats, f, list) {
01008 fs = NULL;
01009 if (!exts_compare(f->exts, type))
01010 continue;
01011
01012 fn = build_filename(filename, type);
01013 errno = 0;
01014 bfile = fopen(fn, "r");
01015 if (!bfile || (fs = get_filestream(f, bfile)) == NULL ||
01016 open_wrapper(fs) ) {
01017 ast_log(LOG_WARNING, "Unable to open %s\n", fn);
01018 if (fs) {
01019 ast_closestream(fs);
01020 }
01021 fs = NULL;
01022 bfile = NULL;
01023 free(fn);
01024 continue;
01025 }
01026
01027 fs->trans = NULL;
01028 fs->fmt = f;
01029 fs->flags = flags;
01030 fs->mode = mode;
01031 fs->filename = strdup(filename);
01032 fs->vfs = NULL;
01033 break;
01034 }
01035
01036 AST_LIST_UNLOCK(&formats);
01037 if (!fs)
01038 ast_log(LOG_WARNING, "No such format '%s'\n", type);
01039
01040 return fs;
01041 }
01042
01043 struct ast_filestream *ast_writefile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
01044 {
01045 int fd, myflags = 0;
01046
01047 FILE *bfile = NULL;
01048 struct ast_format *f;
01049 struct ast_filestream *fs = NULL;
01050 char *buf = NULL;
01051 size_t size = 0;
01052 int format_found = 0;
01053
01054 if (AST_LIST_LOCK(&formats)) {
01055 ast_log(LOG_WARNING, "Unable to lock format list\n");
01056 return NULL;
01057 }
01058
01059
01060
01061 if (flags & O_APPEND) {
01062 flags &= ~O_APPEND;
01063 } else {
01064 myflags = O_TRUNC;
01065 }
01066
01067 myflags |= O_WRONLY | O_CREAT;
01068
01069
01070
01071
01072 AST_LIST_TRAVERSE(&formats, f, list) {
01073 char *fn, *orig_fn = NULL;
01074 if (fs)
01075 break;
01076
01077 if (!exts_compare(f->exts, type))
01078 continue;
01079 else
01080 format_found = 1;
01081
01082 fn = build_filename(filename, type);
01083 fd = open(fn, flags | myflags, mode);
01084 if (fd > -1) {
01085
01086 bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
01087 if (!bfile) {
01088 ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
01089 close(fd);
01090 fd = -1;
01091 }
01092 }
01093
01094 if (ast_opt_cache_record_files && (fd > -1)) {
01095 char *c;
01096
01097 fclose(bfile);
01098
01099
01100
01101
01102 orig_fn = ast_strdupa(fn);
01103 for (c = fn; *c; c++)
01104 if (*c == '/')
01105 *c = '_';
01106
01107 size = strlen(fn) + strlen(record_cache_dir) + 2;
01108 buf = alloca(size);
01109 strcpy(buf, record_cache_dir);
01110 strcat(buf, "/");
01111 strcat(buf, fn);
01112 free(fn);
01113 fn = buf;
01114 fd = open(fn, flags | myflags, mode);
01115 if (fd > -1) {
01116
01117 bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
01118 if (!bfile) {
01119 ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
01120 close(fd);
01121 fd = -1;
01122 }
01123 }
01124 }
01125 if (fd > -1) {
01126 errno = 0;
01127 fs = get_filestream(f, bfile);
01128 if (!fs || rewrite_wrapper(fs, comment)) {
01129 ast_log(LOG_WARNING, "Unable to rewrite %s\n", fn);
01130 close(fd);
01131 if (orig_fn) {
01132 unlink(fn);
01133 unlink(orig_fn);
01134 }
01135 if (fs) {
01136 ast_closestream(fs);
01137 fs = NULL;
01138 }
01139 continue;
01140 }
01141 fs->trans = NULL;
01142 fs->fmt = f;
01143 fs->flags = flags;
01144 fs->mode = mode;
01145 if (orig_fn) {
01146 fs->realfilename = strdup(orig_fn);
01147 fs->filename = strdup(fn);
01148 } else {
01149 fs->realfilename = NULL;
01150 fs->filename = strdup(filename);
01151 }
01152 fs->vfs = NULL;
01153
01154 f->seek(fs, 0, SEEK_END);
01155 } else if (errno != EEXIST) {
01156 ast_log(LOG_WARNING, "Unable to open file %s: %s\n", fn, strerror(errno));
01157 if (orig_fn)
01158 unlink(orig_fn);
01159 }
01160
01161 if (!buf)
01162 free(fn);
01163 }
01164
01165 AST_LIST_UNLOCK(&formats);
01166
01167 if (!format_found)
01168 ast_log(LOG_WARNING, "No such format '%s'\n", type);
01169
01170 return fs;
01171 }
01172
01173
01174
01175
01176 static int waitstream_core(struct ast_channel *c, const char *breakon,
01177 const char *forward, const char *rewind, int skip_ms,
01178 int audiofd, int cmdfd, const char *context)
01179 {
01180 const char *orig_chan_name = NULL;
01181 int err = 0;
01182
01183 if (!breakon)
01184 breakon = "";
01185 if (!forward)
01186 forward = "";
01187 if (!rewind)
01188 rewind = "";
01189
01190
01191 ast_set_flag(c, AST_FLAG_END_DTMF_ONLY);
01192
01193 if (ast_test_flag(c, AST_FLAG_MASQ_NOSTREAM))
01194 orig_chan_name = ast_strdupa(c->name);
01195
01196 while (c->stream) {
01197 int res;
01198 int ms;
01199
01200 if (orig_chan_name && strcasecmp(orig_chan_name, c->name)) {
01201 ast_stopstream(c);
01202 err = 1;
01203 break;
01204 }
01205
01206 ms = ast_sched_wait(c->sched);
01207
01208 if (ms < 0 && !c->timingfunc) {
01209 ast_stopstream(c);
01210 break;
01211 }
01212 if (ms < 0)
01213 ms = 1000;
01214 if (cmdfd < 0) {
01215 res = ast_waitfor(c, ms);
01216 if (res < 0) {
01217 ast_log(LOG_WARNING, "Select failed (%s)\n", strerror(errno));
01218 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01219 return res;
01220 }
01221 } else {
01222 int outfd;
01223 struct ast_channel *rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms);
01224 if (!rchan && (outfd < 0) && (ms)) {
01225
01226 if (errno == EINTR)
01227 continue;
01228 ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno));
01229 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01230 return -1;
01231 } else if (outfd > -1) {
01232
01233 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01234 return 1;
01235 }
01236
01237 res = rchan ? 1 : 0;
01238 }
01239 if (res > 0) {
01240 struct ast_frame *fr = ast_read(c);
01241 if (!fr) {
01242 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01243 return -1;
01244 }
01245 switch(fr->frametype) {
01246 case AST_FRAME_DTMF_END:
01247 if (context) {
01248 const char exten[2] = { fr->subclass, '\0' };
01249 if (ast_exists_extension(c, context, exten, 1, c->cid.cid_num)) {
01250 res = fr->subclass;
01251 ast_frfree(fr);
01252 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01253 return res;
01254 }
01255 } else {
01256 res = fr->subclass;
01257 if (strchr(forward,res)) {
01258 int eoftest;
01259 ast_stream_fastforward(c->stream, skip_ms);
01260 eoftest = fgetc(c->stream->f);
01261 if (feof(c->stream->f)) {
01262 ast_stream_rewind(c->stream, skip_ms);
01263 } else {
01264 ungetc(eoftest, c->stream->f);
01265 }
01266 } else if (strchr(rewind,res)) {
01267 ast_stream_rewind(c->stream, skip_ms);
01268 } else if (strchr(breakon, res)) {
01269 ast_frfree(fr);
01270 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01271 return res;
01272 }
01273 }
01274 break;
01275 case AST_FRAME_CONTROL:
01276 switch(fr->subclass) {
01277 case AST_CONTROL_HANGUP:
01278 case AST_CONTROL_BUSY:
01279 case AST_CONTROL_CONGESTION:
01280 ast_frfree(fr);
01281 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01282 return -1;
01283 case AST_CONTROL_RINGING:
01284 case AST_CONTROL_ANSWER:
01285 case AST_CONTROL_VIDUPDATE:
01286 case AST_CONTROL_SRCUPDATE:
01287 case AST_CONTROL_HOLD:
01288 case AST_CONTROL_UNHOLD:
01289 case AST_CONTROL_PROGRESS:
01290 case AST_CONTROL_PROCEEDING:
01291
01292 break;
01293 default:
01294 ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", fr->subclass);
01295 }
01296 break;
01297 case AST_FRAME_VOICE:
01298
01299 if (audiofd > -1) {
01300 if (write(audiofd, fr->data, fr->datalen) < 0) {
01301 ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno));
01302 }
01303 }
01304 default:
01305
01306 break;
01307 }
01308 ast_frfree(fr);
01309 }
01310 ast_sched_runq(c->sched);
01311 }
01312
01313 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01314
01315 return (err || c->_softhangup) ? -1 : 0;
01316 }
01317
01318 int ast_waitstream_fr(struct ast_channel *c, const char *breakon, const char *forward, const char *rewind, int ms)
01319 {
01320 return waitstream_core(c, breakon, forward, rewind, ms,
01321 -1 , -1 , NULL );
01322 }
01323
01324 int ast_waitstream(struct ast_channel *c, const char *breakon)
01325 {
01326 return waitstream_core(c, breakon, NULL, NULL, 0, -1, -1, NULL);
01327 }
01328
01329 int ast_waitstream_full(struct ast_channel *c, const char *breakon, int audiofd, int cmdfd)
01330 {
01331 return waitstream_core(c, breakon, NULL, NULL, 0,
01332 audiofd, cmdfd, NULL );
01333 }
01334
01335 int ast_waitstream_exten(struct ast_channel *c, const char *context)
01336 {
01337
01338
01339
01340 if (!context)
01341 context = c->context;
01342 return waitstream_core(c, NULL, NULL, NULL, 0,
01343 -1, -1, context);
01344 }
01345
01346
01347
01348
01349
01350
01351 int ast_stream_and_wait(struct ast_channel *chan, const char *file,
01352 const char *language, const char *digits)
01353 {
01354 int res = 0;
01355 if (!ast_strlen_zero(file)) {
01356 res = ast_streamfile(chan, file, language);
01357 if (!res)
01358 res = ast_waitstream(chan, digits);
01359 }
01360 return res;
01361 }
01362
01363 static int show_file_formats(int fd, int argc, char *argv[])
01364 {
01365 #define FORMAT "%-10s %-10s %-20s\n"
01366 #define FORMAT2 "%-10s %-10s %-20s\n"
01367 struct ast_format *f;
01368 int count_fmt = 0;
01369
01370 if (argc != 4)
01371 return RESULT_SHOWUSAGE;
01372 ast_cli(fd, FORMAT, "Format", "Name", "Extensions");
01373
01374 if (AST_LIST_LOCK(&formats)) {
01375 ast_log(LOG_WARNING, "Unable to lock format list\n");
01376 return -1;
01377 }
01378
01379 AST_LIST_TRAVERSE(&formats, f, list) {
01380 ast_cli(fd, FORMAT2, ast_getformatname(f->format), f->name, f->exts);
01381 count_fmt++;
01382 }
01383 AST_LIST_UNLOCK(&formats);
01384 ast_cli(fd, "%d file formats registered.\n", count_fmt);
01385 return RESULT_SUCCESS;
01386 #undef FORMAT
01387 #undef FORMAT2
01388 }
01389
01390 static int show_file_formats_deprecated(int fd, int argc, char *argv[])
01391 {
01392 #define FORMAT "%-10s %-10s %-20s\n"
01393 #define FORMAT2 "%-10s %-10s %-20s\n"
01394 struct ast_format *f;
01395 int count_fmt = 0;
01396
01397 if (argc != 3)
01398 return RESULT_SHOWUSAGE;
01399 ast_cli(fd, FORMAT, "Format", "Name", "Extensions");
01400
01401 if (AST_LIST_LOCK(&formats)) {
01402 ast_log(LOG_WARNING, "Unable to lock format list\n");
01403 return -1;
01404 }
01405
01406 AST_LIST_TRAVERSE(&formats, f, list) {
01407 ast_cli(fd, FORMAT2, ast_getformatname(f->format), f->name, f->exts);
01408 count_fmt++;
01409 }
01410 AST_LIST_UNLOCK(&formats);
01411 ast_cli(fd, "%d file formats registered.\n", count_fmt);
01412 return RESULT_SUCCESS;
01413 #undef FORMAT
01414 #undef FORMAT2
01415 }
01416
01417 char show_file_formats_usage[] =
01418 "Usage: core show file formats\n"
01419 " Displays currently registered file formats (if any)\n";
01420
01421 struct ast_cli_entry cli_show_file_formats_deprecated = {
01422 { "show", "file", "formats" },
01423 show_file_formats_deprecated, NULL,
01424 NULL };
01425
01426 struct ast_cli_entry cli_file[] = {
01427 { { "core", "show", "file", "formats" },
01428 show_file_formats, "Displays file formats",
01429 show_file_formats_usage, NULL, &cli_show_file_formats_deprecated },
01430 };
01431
01432 int ast_file_init(void)
01433 {
01434 ast_cli_register_multiple(cli_file, sizeof(cli_file) / sizeof(struct ast_cli_entry));
01435 return 0;
01436 }