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: 304096 $")
00029
00030 #include <dirent.h>
00031 #include <sys/stat.h>
00032 #include <math.h>
00033
00034 #include "asterisk/_private.h"
00035 #include "asterisk/paths.h"
00036 #include "asterisk/mod_format.h"
00037 #include "asterisk/cli.h"
00038 #include "asterisk/channel.h"
00039 #include "asterisk/sched.h"
00040 #include "asterisk/translate.h"
00041 #include "asterisk/utils.h"
00042 #include "asterisk/lock.h"
00043 #include "asterisk/app.h"
00044 #include "asterisk/pbx.h"
00045 #include "asterisk/linkedlists.h"
00046 #include "asterisk/module.h"
00047 #include "asterisk/astobj2.h"
00048
00049
00050
00051
00052
00053
00054
00055
00056
00057 int ast_language_is_prefix = 1;
00058
00059 static AST_RWLIST_HEAD_STATIC(formats, ast_format);
00060
00061 int __ast_format_register(const struct ast_format *f, struct ast_module *mod)
00062 {
00063 struct ast_format *tmp;
00064
00065 AST_RWLIST_WRLOCK(&formats);
00066 AST_RWLIST_TRAVERSE(&formats, tmp, list) {
00067 if (!strcasecmp(f->name, tmp->name)) {
00068 AST_RWLIST_UNLOCK(&formats);
00069 ast_log(LOG_WARNING, "Tried to register '%s' format, already registered\n", f->name);
00070 return -1;
00071 }
00072 }
00073 if (!(tmp = ast_calloc(1, sizeof(*tmp)))) {
00074 AST_RWLIST_UNLOCK(&formats);
00075 return -1;
00076 }
00077 *tmp = *f;
00078 tmp->module = mod;
00079 if (tmp->buf_size) {
00080
00081
00082
00083
00084 struct _test_align { void *a, *b; } p;
00085 int align = (char *)&p.b - (char *)&p.a;
00086 tmp->buf_size = ((f->buf_size + align - 1) / align) * align;
00087 }
00088
00089 memset(&tmp->list, 0, sizeof(tmp->list));
00090
00091 AST_RWLIST_INSERT_HEAD(&formats, tmp, list);
00092 AST_RWLIST_UNLOCK(&formats);
00093 ast_verb(2, "Registered file format %s, extension(s) %s\n", f->name, f->exts);
00094
00095 return 0;
00096 }
00097
00098 int ast_format_unregister(const char *name)
00099 {
00100 struct ast_format *tmp;
00101 int res = -1;
00102
00103 AST_RWLIST_WRLOCK(&formats);
00104 AST_RWLIST_TRAVERSE_SAFE_BEGIN(&formats, tmp, list) {
00105 if (!strcasecmp(name, tmp->name)) {
00106 AST_RWLIST_REMOVE_CURRENT(list);
00107 ast_free(tmp);
00108 res = 0;
00109 }
00110 }
00111 AST_RWLIST_TRAVERSE_SAFE_END;
00112 AST_RWLIST_UNLOCK(&formats);
00113
00114 if (!res)
00115 ast_verb(2, "Unregistered format %s\n", name);
00116 else
00117 ast_log(LOG_WARNING, "Tried to unregister format %s, already unregistered\n", name);
00118
00119 return res;
00120 }
00121
00122 int ast_stopstream(struct ast_channel *tmp)
00123 {
00124 ast_channel_lock(tmp);
00125
00126
00127 if (tmp->stream) {
00128 ast_closestream(tmp->stream);
00129 tmp->stream = NULL;
00130 if (tmp->oldwriteformat && ast_set_write_format(tmp, tmp->oldwriteformat))
00131 ast_log(LOG_WARNING, "Unable to restore format back to %d\n", tmp->oldwriteformat);
00132 }
00133
00134 if (tmp->vstream != NULL) {
00135 ast_closestream(tmp->vstream);
00136 tmp->vstream = NULL;
00137 }
00138
00139 ast_channel_unlock(tmp);
00140
00141 return 0;
00142 }
00143
00144 int ast_writestream(struct ast_filestream *fs, struct ast_frame *f)
00145 {
00146 int res = -1;
00147 int alt = 0;
00148 if (f->frametype == AST_FRAME_VIDEO) {
00149 if (fs->fmt->format & AST_FORMAT_AUDIO_MASK) {
00150
00151 if (!fs->vfs && fs->filename) {
00152 const char *type = ast_getformatname(f->subclass & ~0x1);
00153 fs->vfs = ast_writefile(fs->filename, type, NULL, fs->flags, 0, fs->mode);
00154 ast_debug(1, "Opened video output file\n");
00155 }
00156 if (fs->vfs)
00157 return ast_writestream(fs->vfs, f);
00158
00159 return 0;
00160 } else {
00161
00162 alt = 1;
00163 }
00164 } else if (f->frametype != AST_FRAME_VOICE) {
00165 ast_log(LOG_WARNING, "Tried to write non-voice frame\n");
00166 return -1;
00167 }
00168 if (((fs->fmt->format | alt) & f->subclass) == f->subclass) {
00169 res = fs->fmt->write(fs, f);
00170 if (res < 0)
00171 ast_log(LOG_WARNING, "Natural write failed\n");
00172 else if (res > 0)
00173 ast_log(LOG_WARNING, "Huh??\n");
00174 } else {
00175
00176
00177 if (fs->trans && f->subclass != fs->lastwriteformat) {
00178 ast_translator_free_path(fs->trans);
00179 fs->trans = NULL;
00180 }
00181 if (!fs->trans)
00182 fs->trans = ast_translator_build_path(fs->fmt->format, f->subclass);
00183 if (!fs->trans)
00184 ast_log(LOG_WARNING, "Unable to translate to format %s, source format %s\n",
00185 fs->fmt->name, ast_getformatname(f->subclass));
00186 else {
00187 struct ast_frame *trf;
00188 fs->lastwriteformat = f->subclass;
00189
00190 if ((trf = ast_translate(fs->trans, f, 0))) {
00191 struct ast_frame *cur;
00192
00193
00194 for (cur = trf; cur; cur = AST_LIST_NEXT(cur, frame_list)) {
00195 if ((res = fs->fmt->write(fs, trf))) {
00196 ast_log(LOG_WARNING, "Translated frame write failed\n");
00197 break;
00198 }
00199 }
00200 ast_frfree(trf);
00201 } else {
00202 res = 0;
00203 }
00204 }
00205 }
00206 return res;
00207 }
00208
00209 static int copy(const char *infile, const char *outfile)
00210 {
00211 int ifd, ofd, len;
00212 char buf[4096];
00213
00214 if ((ifd = open(infile, O_RDONLY)) < 0) {
00215 ast_log(LOG_WARNING, "Unable to open %s in read-only mode\n", infile);
00216 return -1;
00217 }
00218 if ((ofd = open(outfile, O_WRONLY | O_TRUNC | O_CREAT, AST_FILE_MODE)) < 0) {
00219 ast_log(LOG_WARNING, "Unable to open %s in write-only mode\n", outfile);
00220 close(ifd);
00221 return -1;
00222 }
00223 while ( (len = read(ifd, buf, sizeof(buf)) ) ) {
00224 int res;
00225 if (len < 0) {
00226 ast_log(LOG_WARNING, "Read failed on %s: %s\n", infile, strerror(errno));
00227 break;
00228 }
00229
00230 res = write(ofd, buf, len);
00231 if (res != len) {
00232 ast_log(LOG_WARNING, "Write failed on %s (%d of %d): %s\n", outfile, res, len, strerror(errno));
00233 len = -1;
00234 break;
00235 }
00236 }
00237 close(ifd);
00238 close(ofd);
00239 if (len < 0) {
00240 unlink(outfile);
00241 return -1;
00242 }
00243 return 0;
00244 }
00245
00246
00247
00248
00249
00250
00251
00252 static char *build_filename(const char *filename, const char *ext)
00253 {
00254 char *fn = NULL;
00255
00256 if (!strcmp(ext, "wav49"))
00257 ext = "WAV";
00258
00259 if (filename[0] == '/') {
00260 if (asprintf(&fn, "%s.%s", filename, ext) < 0) {
00261 ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
00262 fn = NULL;
00263 }
00264 } else {
00265 if (asprintf(&fn, "%s/sounds/%s.%s",
00266 ast_config_AST_DATA_DIR, filename, ext) < 0) {
00267 ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
00268 fn = NULL;
00269 }
00270 }
00271 return fn;
00272 }
00273
00274
00275
00276 static int exts_compare(const char *exts, const char *type)
00277 {
00278 char tmp[256];
00279 char *stringp = tmp, *ext;
00280
00281 ast_copy_string(tmp, exts, sizeof(tmp));
00282 while ((ext = strsep(&stringp, "|"))) {
00283 if (!strcmp(ext, type))
00284 return 1;
00285 }
00286
00287 return 0;
00288 }
00289
00290 static void filestream_destructor(void *arg)
00291 {
00292 char *cmd = NULL;
00293 size_t size = 0;
00294 struct ast_filestream *f = arg;
00295
00296
00297 if (f->owner) {
00298 if (f->fmt->format < AST_FORMAT_AUDIO_MASK) {
00299 f->owner->stream = NULL;
00300 AST_SCHED_DEL(f->owner->sched, f->owner->streamid);
00301 ast_settimeout(f->owner, 0, NULL, NULL);
00302 } else {
00303 f->owner->vstream = NULL;
00304 AST_SCHED_DEL(f->owner->sched, f->owner->vstreamid);
00305 }
00306 }
00307
00308 if (f->trans)
00309 ast_translator_free_path(f->trans);
00310
00311 if (f->realfilename && f->filename) {
00312 size = strlen(f->filename) + strlen(f->realfilename) + 15;
00313 cmd = alloca(size);
00314 memset(cmd,0,size);
00315 snprintf(cmd,size,"/bin/mv -f %s %s",f->filename,f->realfilename);
00316 ast_safe_system(cmd);
00317 }
00318
00319 if (f->filename)
00320 free(f->filename);
00321 if (f->realfilename)
00322 free(f->realfilename);
00323 if (f->fmt->close) {
00324 void (*closefn)(struct ast_filestream *) = f->fmt->close;
00325 closefn(f);
00326 }
00327 if (f->f)
00328 fclose(f->f);
00329 if (f->vfs)
00330 ast_closestream(f->vfs);
00331 if (f->write_buffer) {
00332 ast_free(f->write_buffer);
00333 }
00334 if (f->orig_chan_name)
00335 free((void *) f->orig_chan_name);
00336 ast_module_unref(f->fmt->module);
00337 }
00338
00339 static struct ast_filestream *get_filestream(struct ast_format *fmt, FILE *bfile)
00340 {
00341 struct ast_filestream *s;
00342
00343 int l = sizeof(*s) + fmt->buf_size + fmt->desc_size;
00344 if ( (s = ao2_alloc(l, filestream_destructor)) == NULL)
00345 return NULL;
00346 s->fmt = fmt;
00347 s->f = bfile;
00348
00349 if (fmt->desc_size)
00350 s->_private = ((char *)(s + 1)) + fmt->buf_size;
00351 if (fmt->buf_size)
00352 s->buf = (char *)(s + 1);
00353 s->fr.src = fmt->name;
00354 return s;
00355 }
00356
00357
00358
00359
00360
00361 enum wrap_fn { WRAP_OPEN, WRAP_REWRITE };
00362
00363 static int fn_wrapper(struct ast_filestream *s, const char *comment, enum wrap_fn mode)
00364 {
00365 struct ast_format *f = s->fmt;
00366 int ret = -1;
00367 int (*openfn)(struct ast_filestream *s);
00368
00369 if (mode == WRAP_OPEN && (openfn = f->open) && openfn(s))
00370 ast_log(LOG_WARNING, "Unable to open format %s\n", f->name);
00371 else if (mode == WRAP_REWRITE && f->rewrite && f->rewrite(s, comment))
00372 ast_log(LOG_WARNING, "Unable to rewrite format %s\n", f->name);
00373 else {
00374
00375 ast_module_ref(f->module);
00376 ret = 0;
00377 }
00378 return ret;
00379 }
00380
00381 static int rewrite_wrapper(struct ast_filestream *s, const char *comment)
00382 {
00383 return fn_wrapper(s, comment, WRAP_REWRITE);
00384 }
00385
00386 static int open_wrapper(struct ast_filestream *s)
00387 {
00388 return fn_wrapper(s, NULL, WRAP_OPEN);
00389 }
00390
00391 enum file_action {
00392 ACTION_EXISTS = 1,
00393 ACTION_DELETE,
00394 ACTION_RENAME,
00395 ACTION_OPEN,
00396 ACTION_COPY
00397 };
00398
00399
00400
00401
00402
00403
00404
00405
00406
00407
00408 static int ast_filehelper(const char *filename, const void *arg2, const char *fmt, const enum file_action action)
00409 {
00410 struct ast_format *f;
00411 int res = (action == ACTION_EXISTS) ? 0 : -1;
00412
00413 AST_RWLIST_RDLOCK(&formats);
00414
00415 AST_RWLIST_TRAVERSE(&formats, f, list) {
00416 char *stringp, *ext = NULL;
00417
00418 if (fmt && !exts_compare(f->exts, fmt))
00419 continue;
00420
00421
00422
00423
00424
00425 stringp = ast_strdupa(f->exts);
00426 while ( (ext = strsep(&stringp, "|")) ) {
00427 struct stat st;
00428 char *fn = build_filename(filename, ext);
00429
00430 if (fn == NULL)
00431 continue;
00432
00433 if ( stat(fn, &st) ) {
00434 ast_free(fn);
00435 continue;
00436 }
00437
00438
00439
00440 if (action == ACTION_OPEN) {
00441 struct ast_channel *chan = (struct ast_channel *)arg2;
00442 FILE *bfile;
00443 struct ast_filestream *s;
00444
00445 if ( !(chan->writeformat & f->format) &&
00446 !((f->format & AST_FORMAT_AUDIO_MASK && fmt) ||
00447 (f->format & AST_FORMAT_VIDEO_MASK && fmt))) {
00448 ast_free(fn);
00449 continue;
00450 }
00451 if ( (bfile = fopen(fn, "r")) == NULL) {
00452 ast_free(fn);
00453 continue;
00454 }
00455 s = get_filestream(f, bfile);
00456 if (!s) {
00457 fclose(bfile);
00458 ast_free(fn);
00459 continue;
00460 }
00461 if (open_wrapper(s)) {
00462 ast_free(fn);
00463 ast_closestream(s);
00464 continue;
00465 }
00466 if (st.st_size == 0) {
00467 ast_log(LOG_WARNING, "File %s detected to have zero size.\n", fn);
00468 }
00469
00470 res = 1;
00471 s->lasttimeout = -1;
00472 s->fmt = f;
00473 s->trans = NULL;
00474 s->filename = NULL;
00475 if (s->fmt->format & AST_FORMAT_AUDIO_MASK) {
00476 if (chan->stream)
00477 ast_closestream(chan->stream);
00478 chan->stream = s;
00479 } else {
00480 if (chan->vstream)
00481 ast_closestream(chan->vstream);
00482 chan->vstream = s;
00483 }
00484 ast_free(fn);
00485 break;
00486 }
00487 switch (action) {
00488 case ACTION_OPEN:
00489 break;
00490
00491 case ACTION_EXISTS:
00492 res |= f->format;
00493 break;
00494
00495 case ACTION_DELETE:
00496 if ( (res = unlink(fn)) )
00497 ast_log(LOG_WARNING, "unlink(%s) failed: %s\n", fn, strerror(errno));
00498 break;
00499
00500 case ACTION_RENAME:
00501 case ACTION_COPY: {
00502 char *nfn = build_filename((const char *)arg2, ext);
00503 if (!nfn)
00504 ast_log(LOG_WARNING, "Out of memory\n");
00505 else {
00506 res = action == ACTION_COPY ? copy(fn, nfn) : rename(fn, nfn);
00507 if (res)
00508 ast_log(LOG_WARNING, "%s(%s,%s) failed: %s\n",
00509 action == ACTION_COPY ? "copy" : "rename",
00510 fn, nfn, strerror(errno));
00511 ast_free(nfn);
00512 }
00513 }
00514 break;
00515
00516 default:
00517 ast_log(LOG_WARNING, "Unknown helper %d\n", action);
00518 }
00519 ast_free(fn);
00520 }
00521 }
00522 AST_RWLIST_UNLOCK(&formats);
00523 return res;
00524 }
00525
00526 static int is_absolute_path(const char *filename)
00527 {
00528 return filename[0] == '/';
00529 }
00530
00531 static int fileexists_test(const char *filename, const char *fmt, const char *lang,
00532 char *buf, int buflen)
00533 {
00534 if (buf == NULL) {
00535 return -1;
00536 }
00537
00538 if (ast_language_is_prefix && !is_absolute_path(filename)) {
00539 if (lang) {
00540 snprintf(buf, buflen, "%s/%s", lang, filename);
00541 } else {
00542 snprintf(buf, buflen, "%s", filename);
00543 }
00544 } else {
00545 strcpy(buf, filename);
00546 if (lang) {
00547
00548 const char *c = strrchr(filename, '/');
00549 int offset = c ? c - filename + 1 : 0;
00550 snprintf(buf + offset, buflen - offset, "%s/%s", lang, filename + offset);
00551 }
00552 }
00553
00554 return ast_filehelper(buf, NULL, fmt, ACTION_EXISTS);
00555 }
00556
00557
00558
00559
00560
00561
00562
00563
00564
00565
00566
00567
00568 static int fileexists_core(const char *filename, const char *fmt, const char *preflang,
00569 char *buf, int buflen)
00570 {
00571 int res = -1;
00572 char *lang = NULL;
00573
00574 if (buf == NULL) {
00575 return -1;
00576 }
00577
00578
00579
00580
00581
00582
00583
00584
00585
00586 if (!ast_strlen_zero(preflang)) {
00587
00588 if ((res = fileexists_test(filename, fmt, preflang, buf, buflen)) > 0) {
00589 return res;
00590 } else {
00591
00592 char *postfix = NULL;
00593 postfix = lang = ast_strdupa(preflang);
00594
00595 strsep(&postfix, "_");
00596 if (postfix) {
00597 if ((res = fileexists_test(filename, fmt, lang, buf, buflen)) > 0) {
00598 return res;
00599 }
00600 }
00601 }
00602 }
00603
00604
00605 if ((res = fileexists_test(filename, fmt, NULL, buf, buflen)) > 0) {
00606 return res;
00607 }
00608
00609
00610 if ((ast_strlen_zero(preflang) || strcmp(preflang, DEFAULT_LANGUAGE)) && (ast_strlen_zero(lang) || strcmp(lang, DEFAULT_LANGUAGE))) {
00611 if ((res = fileexists_test(filename, fmt, DEFAULT_LANGUAGE, buf, buflen)) > 0) {
00612 return res;
00613 }
00614 }
00615
00616 return 0;
00617 }
00618
00619 struct ast_filestream *ast_openstream(struct ast_channel *chan, const char *filename, const char *preflang)
00620 {
00621 return ast_openstream_full(chan, filename, preflang, 0);
00622 }
00623
00624 struct ast_filestream *ast_openstream_full(struct ast_channel *chan, const char *filename, const char *preflang, int asis)
00625 {
00626
00627
00628
00629
00630
00631 int fmts, res, buflen;
00632 char *buf;
00633
00634 if (!asis) {
00635
00636 ast_stopstream(chan);
00637 if (chan->generator)
00638 ast_deactivate_generator(chan);
00639 }
00640 if (preflang == NULL)
00641 preflang = "";
00642 buflen = strlen(preflang) + strlen(filename) + 4;
00643 buf = alloca(buflen);
00644 if (buf == NULL)
00645 return NULL;
00646 fmts = fileexists_core(filename, NULL, preflang, buf, buflen);
00647 if (fmts > 0)
00648 fmts &= AST_FORMAT_AUDIO_MASK;
00649 if (fmts < 1) {
00650 ast_log(LOG_WARNING, "File %s does not exist in any format\n", filename);
00651 return NULL;
00652 }
00653 chan->oldwriteformat = chan->writeformat;
00654
00655 res = ast_set_write_format(chan, fmts);
00656 if (res == -1) {
00657 return NULL;
00658 }
00659 res = ast_filehelper(buf, chan, NULL, ACTION_OPEN);
00660 if (res >= 0)
00661 return chan->stream;
00662 return NULL;
00663 }
00664
00665 struct ast_filestream *ast_openvstream(struct ast_channel *chan, const char *filename, const char *preflang)
00666 {
00667
00668
00669
00670 unsigned int format;
00671 char *buf;
00672 int buflen;
00673
00674 if (preflang == NULL)
00675 preflang = "";
00676 buflen = strlen(preflang) + strlen(filename) + 4;
00677 buf = alloca(buflen);
00678 if (buf == NULL)
00679 return NULL;
00680
00681 for (format = AST_FORMAT_AUDIO_MASK + 1; format <= AST_FORMAT_VIDEO_MASK; format = format << 1) {
00682 int fd;
00683 const char *fmt;
00684
00685 if (!(chan->nativeformats & format))
00686 continue;
00687 fmt = ast_getformatname(format);
00688 if ( fileexists_core(filename, fmt, preflang, buf, buflen) < 1)
00689 continue;
00690 fd = ast_filehelper(buf, chan, fmt, ACTION_OPEN);
00691 if (fd >= 0)
00692 return chan->vstream;
00693 ast_log(LOG_WARNING, "File %s has video but couldn't be opened\n", filename);
00694 }
00695 return NULL;
00696 }
00697
00698 static struct ast_frame *read_frame(struct ast_filestream *s, int *whennext)
00699 {
00700 struct ast_frame *fr, *new_fr;
00701
00702 if (!s || !s->fmt) {
00703 return NULL;
00704 }
00705
00706 if (!(fr = s->fmt->read(s, whennext))) {
00707 return NULL;
00708 }
00709
00710 if (!(new_fr = ast_frisolate(fr))) {
00711 ast_frfree(fr);
00712 return NULL;
00713 }
00714
00715 if (new_fr != fr) {
00716 ast_frfree(fr);
00717 fr = new_fr;
00718 }
00719
00720 return fr;
00721 }
00722
00723 struct ast_frame *ast_readframe(struct ast_filestream *s)
00724 {
00725 int whennext = 0;
00726
00727 return read_frame(s, &whennext);
00728 }
00729
00730 enum fsread_res {
00731 FSREAD_FAILURE,
00732 FSREAD_SUCCESS_SCHED,
00733 FSREAD_SUCCESS_NOSCHED,
00734 };
00735
00736 static int ast_fsread_audio(const void *data);
00737
00738 static enum fsread_res ast_readaudio_callback(struct ast_filestream *s)
00739 {
00740 int whennext = 0;
00741
00742 while (!whennext) {
00743 struct ast_frame *fr;
00744
00745 if (s->orig_chan_name && strcasecmp(s->owner->name, s->orig_chan_name)) {
00746 goto return_failure;
00747 }
00748
00749 fr = read_frame(s, &whennext);
00750
00751 if (!fr || ast_write(s->owner, fr) ) {
00752 if (fr) {
00753 ast_log(LOG_WARNING, "Failed to write frame\n");
00754 ast_frfree(fr);
00755 }
00756 goto return_failure;
00757 }
00758
00759 if (fr) {
00760 ast_frfree(fr);
00761 }
00762 }
00763
00764 if (whennext != s->lasttimeout) {
00765 if (s->owner->timingfd > -1) {
00766 float samp_rate = (float) ast_format_rate(s->fmt->format);
00767 unsigned int rate;
00768
00769 rate = (unsigned int) roundf(samp_rate / ((float) whennext));
00770
00771 ast_settimeout(s->owner, rate, ast_fsread_audio, s);
00772 } else {
00773 s->owner->streamid = ast_sched_add(s->owner->sched,
00774 whennext / (ast_format_rate(s->fmt->format) / 1000), ast_fsread_audio, s);
00775 }
00776 s->lasttimeout = whennext;
00777 return FSREAD_SUCCESS_NOSCHED;
00778 }
00779 return FSREAD_SUCCESS_SCHED;
00780
00781 return_failure:
00782 s->owner->streamid = -1;
00783 ast_settimeout(s->owner, 0, NULL, NULL);
00784 return FSREAD_FAILURE;
00785 }
00786
00787 static int ast_fsread_audio(const void *data)
00788 {
00789 struct ast_filestream *fs = (struct ast_filestream *)data;
00790 enum fsread_res res;
00791
00792 res = ast_readaudio_callback(fs);
00793
00794 if (res == FSREAD_SUCCESS_SCHED)
00795 return 1;
00796
00797 return 0;
00798 }
00799
00800 static int ast_fsread_video(const void *data);
00801
00802 static enum fsread_res ast_readvideo_callback(struct ast_filestream *s)
00803 {
00804 int whennext = 0;
00805
00806 while (!whennext) {
00807 struct ast_frame *fr = read_frame(s, &whennext);
00808
00809 if (!fr || ast_write(s->owner, fr) ) {
00810 if (fr) {
00811 ast_log(LOG_WARNING, "Failed to write frame\n");
00812 ast_frfree(fr);
00813 }
00814 s->owner->vstreamid = -1;
00815 return FSREAD_FAILURE;
00816 }
00817
00818 if (fr) {
00819 ast_frfree(fr);
00820 }
00821 }
00822
00823 if (whennext != s->lasttimeout) {
00824 s->owner->vstreamid = ast_sched_add(s->owner->sched,
00825 whennext / (ast_format_rate(s->fmt->format) / 1000),
00826 ast_fsread_video, s);
00827 s->lasttimeout = whennext;
00828 return FSREAD_SUCCESS_NOSCHED;
00829 }
00830
00831 return FSREAD_SUCCESS_SCHED;
00832 }
00833
00834 static int ast_fsread_video(const void *data)
00835 {
00836 struct ast_filestream *fs = (struct ast_filestream *)data;
00837 enum fsread_res res;
00838
00839 res = ast_readvideo_callback(fs);
00840
00841 if (res == FSREAD_SUCCESS_SCHED)
00842 return 1;
00843
00844 return 0;
00845 }
00846
00847 int ast_applystream(struct ast_channel *chan, struct ast_filestream *s)
00848 {
00849 s->owner = chan;
00850 return 0;
00851 }
00852
00853 int ast_playstream(struct ast_filestream *s)
00854 {
00855 enum fsread_res res;
00856
00857 if (s->fmt->format & AST_FORMAT_AUDIO_MASK)
00858 res = ast_readaudio_callback(s);
00859 else
00860 res = ast_readvideo_callback(s);
00861
00862 return (res == FSREAD_FAILURE) ? -1 : 0;
00863 }
00864
00865 int ast_seekstream(struct ast_filestream *fs, off_t sample_offset, int whence)
00866 {
00867 return fs->fmt->seek(fs, sample_offset, whence);
00868 }
00869
00870 int ast_truncstream(struct ast_filestream *fs)
00871 {
00872 return fs->fmt->trunc(fs);
00873 }
00874
00875 off_t ast_tellstream(struct ast_filestream *fs)
00876 {
00877 return fs->fmt->tell(fs);
00878 }
00879
00880 int ast_stream_fastforward(struct ast_filestream *fs, off_t ms)
00881 {
00882 return ast_seekstream(fs, ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
00883 }
00884
00885 int ast_stream_rewind(struct ast_filestream *fs, off_t ms)
00886 {
00887 return ast_seekstream(fs, -ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
00888 }
00889
00890 int ast_closestream(struct ast_filestream *f)
00891 {
00892
00893
00894
00895
00896
00897
00898 if (f->owner) {
00899 if (f->fmt->format < AST_FORMAT_AUDIO_MASK) {
00900 f->owner->stream = NULL;
00901 AST_SCHED_DEL(f->owner->sched, f->owner->streamid);
00902 ast_settimeout(f->owner, 0, NULL, NULL);
00903 } else {
00904 f->owner->vstream = NULL;
00905 AST_SCHED_DEL(f->owner->sched, f->owner->vstreamid);
00906 }
00907 }
00908
00909 ao2_ref(f, -1);
00910 return 0;
00911 }
00912
00913
00914
00915
00916
00917 int ast_fileexists(const char *filename, const char *fmt, const char *preflang)
00918 {
00919 char *buf;
00920 int buflen;
00921
00922 if (preflang == NULL)
00923 preflang = "";
00924 buflen = strlen(preflang) + strlen(filename) + 4;
00925 buf = alloca(buflen);
00926 if (buf == NULL)
00927 return 0;
00928 return fileexists_core(filename, fmt, preflang, buf, buflen);
00929 }
00930
00931 int ast_filedelete(const char *filename, const char *fmt)
00932 {
00933 return ast_filehelper(filename, NULL, fmt, ACTION_DELETE);
00934 }
00935
00936 int ast_filerename(const char *filename, const char *filename2, const char *fmt)
00937 {
00938 return ast_filehelper(filename, filename2, fmt, ACTION_RENAME);
00939 }
00940
00941 int ast_filecopy(const char *filename, const char *filename2, const char *fmt)
00942 {
00943 return ast_filehelper(filename, filename2, fmt, ACTION_COPY);
00944 }
00945
00946 int ast_streamfile(struct ast_channel *chan, const char *filename, const char *preflang)
00947 {
00948 struct ast_filestream *fs;
00949 struct ast_filestream *vfs=NULL;
00950 char fmt[256];
00951 int seekattempt;
00952 int res;
00953
00954 fs = ast_openstream(chan, filename, preflang);
00955 if (!fs) {
00956 ast_log(LOG_WARNING, "Unable to open %s (format %s): %s\n", filename, ast_getformatname_multiple(fmt, sizeof(fmt), chan->nativeformats), strerror(errno));
00957 return -1;
00958 }
00959
00960
00961
00962
00963 seekattempt = fseek(fs->f, -1, SEEK_END);
00964 if (seekattempt && errno == EINVAL) {
00965
00966 return 0;
00967 } else {
00968 ast_seekstream(fs, 0, SEEK_SET);
00969 }
00970
00971 vfs = ast_openvstream(chan, filename, preflang);
00972 if (vfs) {
00973 ast_debug(1, "Ooh, found a video stream, too, format %s\n", ast_getformatname(vfs->fmt->format));
00974 }
00975
00976 if (ast_test_flag(chan, AST_FLAG_MASQ_NOSTREAM))
00977 fs->orig_chan_name = ast_strdup(chan->name);
00978 if (ast_applystream(chan, fs))
00979 return -1;
00980 if (vfs && ast_applystream(chan, vfs))
00981 return -1;
00982 res = ast_playstream(fs);
00983 if (!res && vfs)
00984 res = ast_playstream(vfs);
00985 ast_verb(3, "<%s> Playing '%s.%s' (language '%s')\n", chan->name, filename, ast_getformatname(chan->writeformat), preflang ? preflang : "default");
00986
00987 return res;
00988 }
00989
00990 struct ast_filestream *ast_readfile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
00991 {
00992 FILE *bfile;
00993 struct ast_format *f;
00994 struct ast_filestream *fs = NULL;
00995 char *fn;
00996 int format_found = 0;
00997
00998 AST_RWLIST_RDLOCK(&formats);
00999
01000 AST_RWLIST_TRAVERSE(&formats, f, list) {
01001 fs = NULL;
01002 if (!exts_compare(f->exts, type))
01003 continue;
01004 else
01005 format_found = 1;
01006
01007 fn = build_filename(filename, type);
01008 errno = 0;
01009 bfile = fopen(fn, "r");
01010
01011 if (!bfile || (fs = get_filestream(f, bfile)) == NULL || open_wrapper(fs) ) {
01012 ast_log(LOG_WARNING, "Unable to open %s\n", fn);
01013 if (fs) {
01014 ast_closestream(fs);
01015 }
01016 fs = NULL;
01017 bfile = NULL;
01018 ast_free(fn);
01019 break;
01020 }
01021
01022 fs->trans = NULL;
01023 fs->fmt = f;
01024 fs->flags = flags;
01025 fs->mode = mode;
01026 fs->filename = ast_strdup(filename);
01027 fs->vfs = NULL;
01028 break;
01029 }
01030
01031 AST_RWLIST_UNLOCK(&formats);
01032 if (!format_found)
01033 ast_log(LOG_WARNING, "No such format '%s'\n", type);
01034
01035 return fs;
01036 }
01037
01038 struct ast_filestream *ast_writefile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
01039 {
01040 int fd, myflags = 0;
01041
01042 FILE *bfile = NULL;
01043 struct ast_format *f;
01044 struct ast_filestream *fs = NULL;
01045 char *buf = NULL;
01046 size_t size = 0;
01047 int format_found = 0;
01048
01049 AST_RWLIST_RDLOCK(&formats);
01050
01051
01052
01053 if (flags & O_APPEND) {
01054 flags &= ~O_APPEND;
01055 } else {
01056 myflags = O_TRUNC;
01057 }
01058
01059 myflags |= O_WRONLY | O_CREAT;
01060
01061
01062
01063
01064 AST_RWLIST_TRAVERSE(&formats, f, list) {
01065 char *fn, *orig_fn = NULL;
01066 if (fs)
01067 break;
01068
01069 if (!exts_compare(f->exts, type))
01070 continue;
01071 else
01072 format_found = 1;
01073
01074 fn = build_filename(filename, type);
01075 fd = open(fn, flags | myflags, mode);
01076 if (fd > -1) {
01077
01078 bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
01079 if (!bfile) {
01080 ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
01081 close(fd);
01082 fd = -1;
01083 }
01084 }
01085
01086 if (ast_opt_cache_record_files && (fd > -1)) {
01087 char *c;
01088
01089 fclose(bfile);
01090
01091
01092
01093
01094 orig_fn = ast_strdupa(fn);
01095 for (c = fn; *c; c++)
01096 if (*c == '/')
01097 *c = '_';
01098
01099 size = strlen(fn) + strlen(record_cache_dir) + 2;
01100 buf = alloca(size);
01101 strcpy(buf, record_cache_dir);
01102 strcat(buf, "/");
01103 strcat(buf, fn);
01104 ast_free(fn);
01105 fn = buf;
01106 fd = open(fn, flags | myflags, mode);
01107 if (fd > -1) {
01108
01109 bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
01110 if (!bfile) {
01111 ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
01112 close(fd);
01113 fd = -1;
01114 }
01115 }
01116 }
01117 if (fd > -1) {
01118 errno = 0;
01119 fs = get_filestream(f, bfile);
01120 if (fs) {
01121 if ((fs->write_buffer = ast_malloc(32768))) {
01122 setvbuf(fs->f, fs->write_buffer, _IOFBF, 32768);
01123 }
01124 }
01125 if (!fs || rewrite_wrapper(fs, comment)) {
01126 ast_log(LOG_WARNING, "Unable to rewrite %s\n", fn);
01127 close(fd);
01128 if (orig_fn) {
01129 unlink(fn);
01130 unlink(orig_fn);
01131 }
01132 if (fs) {
01133 ast_closestream(fs);
01134 fs = NULL;
01135 }
01136 continue;
01137 }
01138 fs->trans = NULL;
01139 fs->fmt = f;
01140 fs->flags = flags;
01141 fs->mode = mode;
01142 if (orig_fn) {
01143 fs->realfilename = ast_strdup(orig_fn);
01144 fs->filename = ast_strdup(fn);
01145 } else {
01146 fs->realfilename = NULL;
01147 fs->filename = ast_strdup(filename);
01148 }
01149 fs->vfs = NULL;
01150
01151 f->seek(fs, 0, SEEK_END);
01152 } else if (errno != EEXIST) {
01153 ast_log(LOG_WARNING, "Unable to open file %s: %s\n", fn, strerror(errno));
01154 if (orig_fn)
01155 unlink(orig_fn);
01156 }
01157
01158 if (!buf)
01159 ast_free(fn);
01160 }
01161
01162 AST_RWLIST_UNLOCK(&formats);
01163
01164 if (!format_found)
01165 ast_log(LOG_WARNING, "No such format '%s'\n", type);
01166
01167 return fs;
01168 }
01169
01170
01171
01172
01173 static int waitstream_core(struct ast_channel *c, const char *breakon,
01174 const char *forward, const char *reverse, int skip_ms,
01175 int audiofd, int cmdfd, const char *context)
01176 {
01177 const char *orig_chan_name = NULL;
01178 int err = 0;
01179
01180 if (!breakon)
01181 breakon = "";
01182 if (!forward)
01183 forward = "";
01184 if (!reverse)
01185 reverse = "";
01186
01187
01188 ast_set_flag(c, AST_FLAG_END_DTMF_ONLY);
01189
01190 if (ast_test_flag(c, AST_FLAG_MASQ_NOSTREAM))
01191 orig_chan_name = ast_strdupa(c->name);
01192
01193 while (c->stream) {
01194 int res;
01195 int ms;
01196
01197 if (orig_chan_name && strcasecmp(orig_chan_name, c->name)) {
01198 ast_stopstream(c);
01199 err = 1;
01200 break;
01201 }
01202
01203 ms = ast_sched_wait(c->sched);
01204
01205 if (ms < 0 && !c->timingfunc) {
01206 ast_stopstream(c);
01207 break;
01208 }
01209 if (ms < 0)
01210 ms = 1000;
01211 if (cmdfd < 0) {
01212 res = ast_waitfor(c, ms);
01213 if (res < 0) {
01214 ast_log(LOG_WARNING, "Select failed (%s)\n", strerror(errno));
01215 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01216 return res;
01217 }
01218 } else {
01219 int outfd;
01220 struct ast_channel *rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms);
01221 if (!rchan && (outfd < 0) && (ms)) {
01222
01223 if (errno == EINTR)
01224 continue;
01225 ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno));
01226 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01227 return -1;
01228 } else if (outfd > -1) {
01229
01230 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01231 return 1;
01232 }
01233
01234 res = rchan ? 1 : 0;
01235 }
01236 if (res > 0) {
01237 struct ast_frame *fr = ast_read(c);
01238 if (!fr) {
01239 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01240 return -1;
01241 }
01242 switch (fr->frametype) {
01243 case AST_FRAME_DTMF_END:
01244 if (context) {
01245 const char exten[2] = { fr->subclass, '\0' };
01246 if (ast_exists_extension(c, context, exten, 1, c->cid.cid_num)) {
01247 res = fr->subclass;
01248 ast_frfree(fr);
01249 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01250 return res;
01251 }
01252 } else {
01253 res = fr->subclass;
01254 if (strchr(forward, res)) {
01255 int eoftest;
01256 ast_stream_fastforward(c->stream, skip_ms);
01257 eoftest = fgetc(c->stream->f);
01258 if (feof(c->stream->f)) {
01259 ast_stream_rewind(c->stream, skip_ms);
01260 } else {
01261 ungetc(eoftest, c->stream->f);
01262 }
01263 } else if (strchr(reverse, res)) {
01264 ast_stream_rewind(c->stream, skip_ms);
01265 } else if (strchr(breakon, res)) {
01266 ast_frfree(fr);
01267 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01268 return res;
01269 }
01270 }
01271 break;
01272 case AST_FRAME_CONTROL:
01273 switch (fr->subclass) {
01274 case AST_CONTROL_HANGUP:
01275 case AST_CONTROL_BUSY:
01276 case AST_CONTROL_CONGESTION:
01277 ast_frfree(fr);
01278 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01279 return -1;
01280 case AST_CONTROL_RINGING:
01281 case AST_CONTROL_ANSWER:
01282 case AST_CONTROL_VIDUPDATE:
01283 case AST_CONTROL_SRCUPDATE:
01284 case AST_CONTROL_SRCCHANGE:
01285 case AST_CONTROL_HOLD:
01286 case AST_CONTROL_UNHOLD:
01287 case -1:
01288
01289 break;
01290 default:
01291 ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", fr->subclass);
01292 }
01293 break;
01294 case AST_FRAME_VOICE:
01295
01296 if (audiofd > -1) {
01297 if (write(audiofd, fr->data.ptr, fr->datalen) < 0) {
01298 ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno));
01299 }
01300 }
01301 default:
01302
01303 break;
01304 }
01305 ast_frfree(fr);
01306 }
01307 ast_sched_runq(c->sched);
01308 }
01309
01310 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01311
01312 return (err || c->_softhangup) ? -1 : 0;
01313 }
01314
01315 int ast_waitstream_fr(struct ast_channel *c, const char *breakon, const char *forward, const char *reverse, int ms)
01316 {
01317 return waitstream_core(c, breakon, forward, reverse, ms,
01318 -1 , -1 , NULL );
01319 }
01320
01321 int ast_waitstream(struct ast_channel *c, const char *breakon)
01322 {
01323 return waitstream_core(c, breakon, NULL, NULL, 0, -1, -1, NULL);
01324 }
01325
01326 int ast_waitstream_full(struct ast_channel *c, const char *breakon, int audiofd, int cmdfd)
01327 {
01328 return waitstream_core(c, breakon, NULL, NULL, 0,
01329 audiofd, cmdfd, NULL );
01330 }
01331
01332 int ast_waitstream_exten(struct ast_channel *c, const char *context)
01333 {
01334
01335
01336
01337 if (!context)
01338 context = c->context;
01339 return waitstream_core(c, NULL, NULL, NULL, 0,
01340 -1, -1, context);
01341 }
01342
01343
01344
01345
01346
01347
01348 int ast_stream_and_wait(struct ast_channel *chan, const char *file, const char *digits)
01349 {
01350 int res = 0;
01351 if (!ast_strlen_zero(file)) {
01352 res = ast_streamfile(chan, file, chan->language);
01353 if (!res) {
01354 res = ast_waitstream(chan, digits);
01355 }
01356 }
01357 return res;
01358 }
01359
01360 char *ast_format_str_reduce(char *fmts)
01361 {
01362 struct ast_format *f;
01363 struct ast_format *fmts_ptr[AST_MAX_FORMATS];
01364 char *fmts_str[AST_MAX_FORMATS];
01365 char *stringp, *type;
01366 char *orig = fmts;
01367 int i, j, x, first, found = 0;
01368 int len = strlen(fmts) + 1;
01369 int res;
01370
01371 if (AST_RWLIST_RDLOCK(&formats)) {
01372 ast_log(LOG_WARNING, "Unable to lock format list\n");
01373 return NULL;
01374 }
01375
01376 stringp = ast_strdupa(fmts);
01377
01378 for (x = 0; (type = strsep(&stringp, "|")) && x < AST_MAX_FORMATS; x++) {
01379 AST_RWLIST_TRAVERSE(&formats, f, list) {
01380 if (exts_compare(f->exts, type)) {
01381 found = 1;
01382 break;
01383 }
01384 }
01385
01386 fmts_str[x] = type;
01387 if (found) {
01388 fmts_ptr[x] = f;
01389 } else {
01390 fmts_ptr[x] = NULL;
01391 }
01392 }
01393 AST_RWLIST_UNLOCK(&formats);
01394
01395 first = 1;
01396 for (i = 0; i < x; i++) {
01397
01398 if (!fmts_ptr[i]) {
01399 ast_log(LOG_WARNING, "ignoring unknown format '%s'\n", fmts_str[i]);
01400 continue;
01401 }
01402
01403
01404 if (first) {
01405 res = snprintf(fmts, len, "%s", fmts_str[i]);
01406 fmts += res;
01407 len -= res;
01408 first = 0;
01409 continue;
01410 }
01411
01412 found = 0;
01413 for (j = 0; j < i; j++) {
01414
01415 if (fmts_ptr[j] == fmts_ptr[i]) {
01416 found = 1;
01417 break;
01418 }
01419 }
01420
01421 if (!found) {
01422 res = snprintf(fmts, len, "|%s", fmts_str[i]);
01423 fmts += res;
01424 len -= res;
01425 }
01426 }
01427
01428 if (first) {
01429 ast_log(LOG_WARNING, "no known formats found in format list (%s)\n", orig);
01430 return NULL;
01431 }
01432
01433 return orig;
01434 }
01435
01436 static char *handle_cli_core_show_file_formats(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
01437 {
01438 #define FORMAT "%-10s %-10s %-20s\n"
01439 #define FORMAT2 "%-10s %-10s %-20s\n"
01440 struct ast_format *f;
01441 int count_fmt = 0;
01442
01443 switch (cmd) {
01444 case CLI_INIT:
01445 e->command = "core show file formats";
01446 e->usage =
01447 "Usage: core show file formats\n"
01448 " Displays currently registered file formats (if any).\n";
01449 return NULL;
01450 case CLI_GENERATE:
01451 return NULL;
01452 }
01453
01454 if (a->argc != 4)
01455 return CLI_SHOWUSAGE;
01456
01457 ast_cli(a->fd, FORMAT, "Format", "Name", "Extensions");
01458 ast_cli(a->fd, FORMAT, "------", "----", "----------");
01459
01460 AST_RWLIST_RDLOCK(&formats);
01461 AST_RWLIST_TRAVERSE(&formats, f, list) {
01462 ast_cli(a->fd, FORMAT2, ast_getformatname(f->format), f->name, f->exts);
01463 count_fmt++;
01464 }
01465 AST_RWLIST_UNLOCK(&formats);
01466 ast_cli(a->fd, "%d file formats registered.\n", count_fmt);
01467 return CLI_SUCCESS;
01468 #undef FORMAT
01469 #undef FORMAT2
01470 }
01471
01472 struct ast_cli_entry cli_file[] = {
01473 AST_CLI_DEFINE(handle_cli_core_show_file_formats, "Displays file formats")
01474 };
01475
01476 int ast_file_init(void)
01477 {
01478 ast_cli_register_multiple(cli_file, ARRAY_LEN(cli_file));
01479 return 0;
01480 }