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00025
00026 #include "asterisk.h"
00027
00028 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 203785 $")
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 struct ast_frame *ast_readframe(struct ast_filestream *s)
00710 {
00711 struct ast_frame *f = NULL;
00712 int whennext = 0;
00713 if (s && s->fmt)
00714 f = s->fmt->read(s, &whennext);
00715 if (f) {
00716 ast_set_flag(f, AST_FRFLAG_FROM_FILESTREAM);
00717 ao2_ref(s, +1);
00718 }
00719 return f;
00720 }
00721
00722 enum fsread_res {
00723 FSREAD_FAILURE,
00724 FSREAD_SUCCESS_SCHED,
00725 FSREAD_SUCCESS_NOSCHED,
00726 };
00727
00728 static int ast_fsread_audio(const void *data);
00729
00730 static enum fsread_res ast_readaudio_callback(struct ast_filestream *s)
00731 {
00732 int whennext = 0;
00733
00734 while (!whennext) {
00735 struct ast_frame *fr;
00736
00737 if (s->orig_chan_name && strcasecmp(s->owner->name, s->orig_chan_name))
00738 goto return_failure;
00739
00740 fr = s->fmt->read(s, &whennext);
00741 if (fr) {
00742 ast_set_flag(fr, AST_FRFLAG_FROM_FILESTREAM);
00743 ao2_ref(s, +1);
00744 }
00745 if (!fr || ast_write(s->owner, fr) ) {
00746 if (fr) {
00747 ast_log(LOG_WARNING, "Failed to write frame\n");
00748 ast_frfree(fr);
00749 }
00750 goto return_failure;
00751 }
00752 if (fr) {
00753 ast_frfree(fr);
00754 }
00755 }
00756 if (whennext != s->lasttimeout) {
00757 #ifdef HAVE_DAHDI
00758 if (s->owner->timingfd > -1) {
00759 int zap_timer_samples = whennext;
00760 int rate;
00761
00762 if ((rate = ast_format_rate(s->fmt->format)) != 8000) {
00763 float factor;
00764 factor = ((float) rate) / ((float) 8000.0);
00765 zap_timer_samples = (int) ( ((float) zap_timer_samples) / factor );
00766 }
00767 ast_settimeout(s->owner, zap_timer_samples, ast_fsread_audio, s);
00768 } else
00769 #endif
00770 s->owner->streamid = ast_sched_add(s->owner->sched,
00771 whennext / (ast_format_rate(s->fmt->format) / 1000),
00772 ast_fsread_audio, s);
00773 s->lasttimeout = whennext;
00774 return FSREAD_SUCCESS_NOSCHED;
00775 }
00776 return FSREAD_SUCCESS_SCHED;
00777
00778 return_failure:
00779 s->owner->streamid = -1;
00780 #ifdef HAVE_DAHDI
00781 ast_settimeout(s->owner, 0, NULL, NULL);
00782 #endif
00783 return FSREAD_FAILURE;
00784 }
00785
00786 static int ast_fsread_audio(const void *data)
00787 {
00788 struct ast_filestream *fs = (struct ast_filestream *)data;
00789 enum fsread_res res;
00790
00791 res = ast_readaudio_callback(fs);
00792
00793 if (res == FSREAD_SUCCESS_SCHED)
00794 return 1;
00795
00796 return 0;
00797 }
00798
00799 static int ast_fsread_video(const void *data);
00800
00801 static enum fsread_res ast_readvideo_callback(struct ast_filestream *s)
00802 {
00803 int whennext = 0;
00804
00805 while (!whennext) {
00806 struct ast_frame *fr = s->fmt->read(s, &whennext);
00807 if (fr) {
00808 ast_set_flag(fr, AST_FRFLAG_FROM_FILESTREAM);
00809 ao2_ref(s, +1);
00810 }
00811 if (!fr || ast_write(s->owner, fr) ) {
00812 if (fr) {
00813 ast_log(LOG_WARNING, "Failed to write frame\n");
00814 ast_frfree(fr);
00815 }
00816 s->owner->vstreamid = -1;
00817 return FSREAD_FAILURE;
00818 }
00819 if (fr) {
00820 ast_frfree(fr);
00821 }
00822 }
00823
00824 if (whennext != s->lasttimeout) {
00825 s->owner->vstreamid = ast_sched_add(s->owner->sched,
00826 whennext / (ast_format_rate(s->fmt->format) / 1000),
00827 ast_fsread_video, s);
00828 s->lasttimeout = whennext;
00829 return FSREAD_SUCCESS_NOSCHED;
00830 }
00831
00832 return FSREAD_SUCCESS_SCHED;
00833 }
00834
00835 static int ast_fsread_video(const void *data)
00836 {
00837 struct ast_filestream *fs = (struct ast_filestream *)data;
00838 enum fsread_res res;
00839
00840 res = ast_readvideo_callback(fs);
00841
00842 if (res == FSREAD_SUCCESS_SCHED)
00843 return 1;
00844
00845 return 0;
00846 }
00847
00848 int ast_applystream(struct ast_channel *chan, struct ast_filestream *s)
00849 {
00850 s->owner = chan;
00851 return 0;
00852 }
00853
00854 int ast_playstream(struct ast_filestream *s)
00855 {
00856 enum fsread_res res;
00857
00858 if (s->fmt->format < AST_FORMAT_MAX_AUDIO)
00859 res = ast_readaudio_callback(s);
00860 else
00861 res = ast_readvideo_callback(s);
00862
00863 return (res == FSREAD_FAILURE) ? -1 : 0;
00864 }
00865
00866 int ast_seekstream(struct ast_filestream *fs, off_t sample_offset, int whence)
00867 {
00868 return fs->fmt->seek(fs, sample_offset, whence);
00869 }
00870
00871 int ast_truncstream(struct ast_filestream *fs)
00872 {
00873 return fs->fmt->trunc(fs);
00874 }
00875
00876 off_t ast_tellstream(struct ast_filestream *fs)
00877 {
00878 return fs->fmt->tell(fs);
00879 }
00880
00881 int ast_stream_fastforward(struct ast_filestream *fs, off_t ms)
00882 {
00883 return ast_seekstream(fs, ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
00884 }
00885
00886 int ast_stream_rewind(struct ast_filestream *fs, off_t ms)
00887 {
00888 return ast_seekstream(fs, -ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
00889 }
00890
00891 int ast_closestream(struct ast_filestream *f)
00892 {
00893
00894 if (ast_test_flag(&f->fr, AST_FRFLAG_FROM_FILESTREAM)) {
00895
00896
00897
00898
00899
00900
00901
00902
00903
00904 ao2_ref(f, -1);
00905 return 0;
00906 }
00907
00908 ao2_ref(f, -1);
00909 return 0;
00910 }
00911
00912
00913
00914
00915
00916 int ast_fileexists(const char *filename, const char *fmt, const char *preflang)
00917 {
00918 char *buf;
00919 int buflen;
00920
00921 if (preflang == NULL)
00922 preflang = "";
00923 buflen = strlen(preflang) + strlen(filename) + 4;
00924 buf = alloca(buflen);
00925 if (buf == NULL)
00926 return 0;
00927 return fileexists_core(filename, fmt, preflang, buf, buflen);
00928 }
00929
00930 int ast_filedelete(const char *filename, const char *fmt)
00931 {
00932 return ast_filehelper(filename, NULL, fmt, ACTION_DELETE);
00933 }
00934
00935 int ast_filerename(const char *filename, const char *filename2, const char *fmt)
00936 {
00937 return ast_filehelper(filename, filename2, fmt, ACTION_RENAME);
00938 }
00939
00940 int ast_filecopy(const char *filename, const char *filename2, const char *fmt)
00941 {
00942 return ast_filehelper(filename, filename2, fmt, ACTION_COPY);
00943 }
00944
00945 int ast_streamfile(struct ast_channel *chan, const char *filename, const char *preflang)
00946 {
00947 struct ast_filestream *fs;
00948 struct ast_filestream *vfs=NULL;
00949 char fmt[256];
00950
00951 fs = ast_openstream(chan, filename, preflang);
00952 if (fs)
00953 vfs = ast_openvstream(chan, filename, preflang);
00954 if (vfs)
00955 ast_log(LOG_DEBUG, "Ooh, found a video stream, too, format %s\n", ast_getformatname(vfs->fmt->format));
00956 if (fs){
00957 int res;
00958 if (ast_test_flag(chan, AST_FLAG_MASQ_NOSTREAM))
00959 fs->orig_chan_name = ast_strdup(chan->name);
00960 if (ast_applystream(chan, fs))
00961 return -1;
00962 if (vfs && ast_applystream(chan, vfs))
00963 return -1;
00964 res = ast_playstream(fs);
00965 if (!res && vfs)
00966 res = ast_playstream(vfs);
00967 if (option_verbose > 2)
00968 ast_verbose(VERBOSE_PREFIX_3 "<%s> Playing '%s' (language '%s')\n", chan->name, filename, preflang ? preflang : "default");
00969
00970 return res;
00971 }
00972 ast_log(LOG_WARNING, "Unable to open %s (format %s): %s\n", filename, ast_getformatname_multiple(fmt, sizeof(fmt), chan->nativeformats), strerror(errno));
00973 return -1;
00974 }
00975
00976 struct ast_filestream *ast_readfile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
00977 {
00978 FILE *bfile;
00979 struct ast_format *f;
00980 struct ast_filestream *fs = NULL;
00981 char *fn;
00982
00983 if (AST_LIST_LOCK(&formats)) {
00984 ast_log(LOG_WARNING, "Unable to lock format list\n");
00985 return NULL;
00986 }
00987
00988 AST_LIST_TRAVERSE(&formats, f, list) {
00989 fs = NULL;
00990 if (!exts_compare(f->exts, type))
00991 continue;
00992
00993 fn = build_filename(filename, type);
00994 errno = 0;
00995 bfile = fopen(fn, "r");
00996 if (!bfile || (fs = get_filestream(f, bfile)) == NULL ||
00997 open_wrapper(fs) ) {
00998 ast_log(LOG_WARNING, "Unable to open %s\n", fn);
00999 if (fs) {
01000 ast_closestream(fs);
01001 }
01002 fs = NULL;
01003 bfile = NULL;
01004 free(fn);
01005 continue;
01006 }
01007
01008 fs->trans = NULL;
01009 fs->fmt = f;
01010 fs->flags = flags;
01011 fs->mode = mode;
01012 fs->filename = strdup(filename);
01013 fs->vfs = NULL;
01014 break;
01015 }
01016
01017 AST_LIST_UNLOCK(&formats);
01018 if (!fs)
01019 ast_log(LOG_WARNING, "No such format '%s'\n", type);
01020
01021 return fs;
01022 }
01023
01024 struct ast_filestream *ast_writefile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
01025 {
01026 int fd, myflags = 0;
01027
01028 FILE *bfile = NULL;
01029 struct ast_format *f;
01030 struct ast_filestream *fs = NULL;
01031 char *buf = NULL;
01032 size_t size = 0;
01033 int format_found = 0;
01034
01035 if (AST_LIST_LOCK(&formats)) {
01036 ast_log(LOG_WARNING, "Unable to lock format list\n");
01037 return NULL;
01038 }
01039
01040
01041
01042 if (flags & O_APPEND) {
01043 flags &= ~O_APPEND;
01044 } else {
01045 myflags = O_TRUNC;
01046 }
01047
01048 myflags |= O_WRONLY | O_CREAT;
01049
01050
01051
01052
01053 AST_LIST_TRAVERSE(&formats, f, list) {
01054 char *fn, *orig_fn = NULL;
01055 if (fs)
01056 break;
01057
01058 if (!exts_compare(f->exts, type))
01059 continue;
01060 else
01061 format_found = 1;
01062
01063 fn = build_filename(filename, type);
01064 fd = open(fn, flags | myflags, mode);
01065 if (fd > -1) {
01066
01067 bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
01068 if (!bfile) {
01069 ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
01070 close(fd);
01071 fd = -1;
01072 }
01073 }
01074
01075 if (ast_opt_cache_record_files && (fd > -1)) {
01076 char *c;
01077
01078 fclose(bfile);
01079
01080
01081
01082
01083 orig_fn = ast_strdupa(fn);
01084 for (c = fn; *c; c++)
01085 if (*c == '/')
01086 *c = '_';
01087
01088 size = strlen(fn) + strlen(record_cache_dir) + 2;
01089 buf = alloca(size);
01090 strcpy(buf, record_cache_dir);
01091 strcat(buf, "/");
01092 strcat(buf, fn);
01093 free(fn);
01094 fn = buf;
01095 fd = open(fn, flags | myflags, mode);
01096 if (fd > -1) {
01097
01098 bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
01099 if (!bfile) {
01100 ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
01101 close(fd);
01102 fd = -1;
01103 }
01104 }
01105 }
01106 if (fd > -1) {
01107 errno = 0;
01108 fs = get_filestream(f, bfile);
01109 if (!fs || rewrite_wrapper(fs, comment)) {
01110 ast_log(LOG_WARNING, "Unable to rewrite %s\n", fn);
01111 close(fd);
01112 if (orig_fn) {
01113 unlink(fn);
01114 unlink(orig_fn);
01115 }
01116 if (fs) {
01117 ast_closestream(fs);
01118 fs = NULL;
01119 }
01120 continue;
01121 }
01122 fs->trans = NULL;
01123 fs->fmt = f;
01124 fs->flags = flags;
01125 fs->mode = mode;
01126 if (orig_fn) {
01127 fs->realfilename = strdup(orig_fn);
01128 fs->filename = strdup(fn);
01129 } else {
01130 fs->realfilename = NULL;
01131 fs->filename = strdup(filename);
01132 }
01133 fs->vfs = NULL;
01134
01135 f->seek(fs, 0, SEEK_END);
01136 } else if (errno != EEXIST) {
01137 ast_log(LOG_WARNING, "Unable to open file %s: %s\n", fn, strerror(errno));
01138 if (orig_fn)
01139 unlink(orig_fn);
01140 }
01141
01142 if (!buf)
01143 free(fn);
01144 }
01145
01146 AST_LIST_UNLOCK(&formats);
01147
01148 if (!format_found)
01149 ast_log(LOG_WARNING, "No such format '%s'\n", type);
01150
01151 return fs;
01152 }
01153
01154
01155
01156
01157 static int waitstream_core(struct ast_channel *c, const char *breakon,
01158 const char *forward, const char *rewind, int skip_ms,
01159 int audiofd, int cmdfd, const char *context)
01160 {
01161 const char *orig_chan_name = NULL;
01162 int err = 0;
01163
01164 if (!breakon)
01165 breakon = "";
01166 if (!forward)
01167 forward = "";
01168 if (!rewind)
01169 rewind = "";
01170
01171
01172 ast_set_flag(c, AST_FLAG_END_DTMF_ONLY);
01173
01174 if (ast_test_flag(c, AST_FLAG_MASQ_NOSTREAM))
01175 orig_chan_name = ast_strdupa(c->name);
01176
01177 while (c->stream) {
01178 int res;
01179 int ms;
01180
01181 if (orig_chan_name && strcasecmp(orig_chan_name, c->name)) {
01182 ast_stopstream(c);
01183 err = 1;
01184 break;
01185 }
01186
01187 ms = ast_sched_wait(c->sched);
01188
01189 if (ms < 0 && !c->timingfunc) {
01190 ast_stopstream(c);
01191 break;
01192 }
01193 if (ms < 0)
01194 ms = 1000;
01195 if (cmdfd < 0) {
01196 res = ast_waitfor(c, ms);
01197 if (res < 0) {
01198 ast_log(LOG_WARNING, "Select failed (%s)\n", strerror(errno));
01199 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01200 return res;
01201 }
01202 } else {
01203 int outfd;
01204 struct ast_channel *rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms);
01205 if (!rchan && (outfd < 0) && (ms)) {
01206
01207 if (errno == EINTR)
01208 continue;
01209 ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno));
01210 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01211 return -1;
01212 } else if (outfd > -1) {
01213
01214 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01215 return 1;
01216 }
01217
01218 res = rchan ? 1 : 0;
01219 }
01220 if (res > 0) {
01221 struct ast_frame *fr = ast_read(c);
01222 if (!fr) {
01223 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01224 return -1;
01225 }
01226 switch(fr->frametype) {
01227 case AST_FRAME_DTMF_END:
01228 if (context) {
01229 const char exten[2] = { fr->subclass, '\0' };
01230 if (ast_exists_extension(c, context, exten, 1, c->cid.cid_num)) {
01231 res = fr->subclass;
01232 ast_frfree(fr);
01233 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01234 return res;
01235 }
01236 } else {
01237 res = fr->subclass;
01238 if (strchr(forward,res)) {
01239 int eoftest;
01240 ast_stream_fastforward(c->stream, skip_ms);
01241 eoftest = fgetc(c->stream->f);
01242 if (feof(c->stream->f)) {
01243 ast_stream_rewind(c->stream, skip_ms);
01244 } else {
01245 ungetc(eoftest, c->stream->f);
01246 }
01247 } else if (strchr(rewind,res)) {
01248 ast_stream_rewind(c->stream, skip_ms);
01249 } else if (strchr(breakon, res)) {
01250 ast_frfree(fr);
01251 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01252 return res;
01253 }
01254 }
01255 break;
01256 case AST_FRAME_CONTROL:
01257 switch(fr->subclass) {
01258 case AST_CONTROL_HANGUP:
01259 case AST_CONTROL_BUSY:
01260 case AST_CONTROL_CONGESTION:
01261 ast_frfree(fr);
01262 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01263 return -1;
01264 case AST_CONTROL_RINGING:
01265 case AST_CONTROL_ANSWER:
01266 case AST_CONTROL_VIDUPDATE:
01267 case AST_CONTROL_SRCUPDATE:
01268 case AST_CONTROL_HOLD:
01269 case AST_CONTROL_UNHOLD:
01270 case AST_CONTROL_PROGRESS:
01271 case AST_CONTROL_PROCEEDING:
01272
01273 break;
01274 default:
01275 ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", fr->subclass);
01276 }
01277 break;
01278 case AST_FRAME_VOICE:
01279
01280 if (audiofd > -1) {
01281 if (write(audiofd, fr->data, fr->datalen) < 0) {
01282 ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno));
01283 }
01284 }
01285 default:
01286
01287 break;
01288 }
01289 ast_frfree(fr);
01290 }
01291 ast_sched_runq(c->sched);
01292 }
01293
01294 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01295
01296 return (err || c->_softhangup) ? -1 : 0;
01297 }
01298
01299 int ast_waitstream_fr(struct ast_channel *c, const char *breakon, const char *forward, const char *rewind, int ms)
01300 {
01301 return waitstream_core(c, breakon, forward, rewind, ms,
01302 -1 , -1 , NULL );
01303 }
01304
01305 int ast_waitstream(struct ast_channel *c, const char *breakon)
01306 {
01307 return waitstream_core(c, breakon, NULL, NULL, 0, -1, -1, NULL);
01308 }
01309
01310 int ast_waitstream_full(struct ast_channel *c, const char *breakon, int audiofd, int cmdfd)
01311 {
01312 return waitstream_core(c, breakon, NULL, NULL, 0,
01313 audiofd, cmdfd, NULL );
01314 }
01315
01316 int ast_waitstream_exten(struct ast_channel *c, const char *context)
01317 {
01318
01319
01320
01321 if (!context)
01322 context = c->context;
01323 return waitstream_core(c, NULL, NULL, NULL, 0,
01324 -1, -1, context);
01325 }
01326
01327 void ast_filestream_frame_freed(struct ast_frame *fr)
01328 {
01329 struct ast_filestream *fs;
01330
01331 ast_clear_flag(fr, AST_FRFLAG_FROM_FILESTREAM);
01332
01333 fs = (struct ast_filestream *) (((char *) fr) - offsetof(struct ast_filestream, fr));
01334
01335 ao2_ref(fs, -1);
01336 }
01337
01338
01339
01340
01341
01342
01343 int ast_stream_and_wait(struct ast_channel *chan, const char *file,
01344 const char *language, const char *digits)
01345 {
01346 int res = 0;
01347 if (!ast_strlen_zero(file)) {
01348 res = ast_streamfile(chan, file, language);
01349 if (!res)
01350 res = ast_waitstream(chan, digits);
01351 }
01352 return res;
01353 }
01354
01355 static int show_file_formats(int fd, int argc, char *argv[])
01356 {
01357 #define FORMAT "%-10s %-10s %-20s\n"
01358 #define FORMAT2 "%-10s %-10s %-20s\n"
01359 struct ast_format *f;
01360 int count_fmt = 0;
01361
01362 if (argc != 4)
01363 return RESULT_SHOWUSAGE;
01364 ast_cli(fd, FORMAT, "Format", "Name", "Extensions");
01365
01366 if (AST_LIST_LOCK(&formats)) {
01367 ast_log(LOG_WARNING, "Unable to lock format list\n");
01368 return -1;
01369 }
01370
01371 AST_LIST_TRAVERSE(&formats, f, list) {
01372 ast_cli(fd, FORMAT2, ast_getformatname(f->format), f->name, f->exts);
01373 count_fmt++;
01374 }
01375 AST_LIST_UNLOCK(&formats);
01376 ast_cli(fd, "%d file formats registered.\n", count_fmt);
01377 return RESULT_SUCCESS;
01378 #undef FORMAT
01379 #undef FORMAT2
01380 }
01381
01382 static int show_file_formats_deprecated(int fd, int argc, char *argv[])
01383 {
01384 #define FORMAT "%-10s %-10s %-20s\n"
01385 #define FORMAT2 "%-10s %-10s %-20s\n"
01386 struct ast_format *f;
01387 int count_fmt = 0;
01388
01389 if (argc != 3)
01390 return RESULT_SHOWUSAGE;
01391 ast_cli(fd, FORMAT, "Format", "Name", "Extensions");
01392
01393 if (AST_LIST_LOCK(&formats)) {
01394 ast_log(LOG_WARNING, "Unable to lock format list\n");
01395 return -1;
01396 }
01397
01398 AST_LIST_TRAVERSE(&formats, f, list) {
01399 ast_cli(fd, FORMAT2, ast_getformatname(f->format), f->name, f->exts);
01400 count_fmt++;
01401 }
01402 AST_LIST_UNLOCK(&formats);
01403 ast_cli(fd, "%d file formats registered.\n", count_fmt);
01404 return RESULT_SUCCESS;
01405 #undef FORMAT
01406 #undef FORMAT2
01407 }
01408
01409 char show_file_formats_usage[] =
01410 "Usage: core show file formats\n"
01411 " Displays currently registered file formats (if any)\n";
01412
01413 struct ast_cli_entry cli_show_file_formats_deprecated = {
01414 { "show", "file", "formats" },
01415 show_file_formats_deprecated, NULL,
01416 NULL };
01417
01418 struct ast_cli_entry cli_file[] = {
01419 { { "core", "show", "file", "formats" },
01420 show_file_formats, "Displays file formats",
01421 show_file_formats_usage, NULL, &cli_show_file_formats_deprecated },
01422 };
01423
01424 int ast_file_init(void)
01425 {
01426 ast_cli_register_multiple(cli_file, sizeof(cli_file) / sizeof(struct ast_cli_entry));
01427 return 0;
01428 }