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00025
00026 #include "asterisk.h"
00027
00028 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 175407 $")
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 trf = ast_translate(fs->trans, f, 0);
00207 if (trf) {
00208 res = fs->fmt->write(fs, trf);
00209 ast_frfree(trf);
00210 if (res)
00211 ast_log(LOG_WARNING, "Translated frame write failed\n");
00212 } else
00213 res = 0;
00214 }
00215 }
00216 return res;
00217 }
00218
00219 static int copy(const char *infile, const char *outfile)
00220 {
00221 int ifd, ofd, len;
00222 char buf[4096];
00223
00224 if ((ifd = open(infile, O_RDONLY)) < 0) {
00225 ast_log(LOG_WARNING, "Unable to open %s in read-only mode\n", infile);
00226 return -1;
00227 }
00228 if ((ofd = open(outfile, O_WRONLY | O_TRUNC | O_CREAT, 0600)) < 0) {
00229 ast_log(LOG_WARNING, "Unable to open %s in write-only mode\n", outfile);
00230 close(ifd);
00231 return -1;
00232 }
00233 while ( (len = read(ifd, buf, sizeof(buf)) ) ) {
00234 int res;
00235 if (len < 0) {
00236 ast_log(LOG_WARNING, "Read failed on %s: %s\n", infile, strerror(errno));
00237 break;
00238 }
00239
00240 res = write(ofd, buf, len);
00241 if (res != len) {
00242 ast_log(LOG_WARNING, "Write failed on %s (%d of %d): %s\n", outfile, res, len, strerror(errno));
00243 len = -1;
00244 break;
00245 }
00246 }
00247 close(ifd);
00248 close(ofd);
00249 if (len < 0) {
00250 unlink(outfile);
00251 return -1;
00252 }
00253 return 0;
00254 }
00255
00256
00257
00258
00259
00260
00261
00262 static char *build_filename(const char *filename, const char *ext)
00263 {
00264 char *fn = NULL;
00265
00266 if (!strcmp(ext, "wav49"))
00267 ext = "WAV";
00268
00269 if (filename[0] == '/') {
00270 if (asprintf(&fn, "%s.%s", filename, ext) < 0) {
00271 ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
00272 fn = NULL;
00273 }
00274 } else {
00275 if (asprintf(&fn, "%s/sounds/%s.%s",
00276 ast_config_AST_DATA_DIR, filename, ext) < 0) {
00277 ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
00278 fn = NULL;
00279 }
00280 }
00281 return fn;
00282 }
00283
00284
00285
00286 static int exts_compare(const char *exts, const char *type)
00287 {
00288 char tmp[256];
00289 char *stringp = tmp, *ext;
00290
00291 ast_copy_string(tmp, exts, sizeof(tmp));
00292 while ((ext = strsep(&stringp, "|"))) {
00293 if (!strcmp(ext, type))
00294 return 1;
00295 }
00296
00297 return 0;
00298 }
00299
00300 static void filestream_destructor(void *arg)
00301 {
00302 char *cmd = NULL;
00303 size_t size = 0;
00304 struct ast_filestream *f = arg;
00305
00306
00307 if (f->owner) {
00308 if (f->fmt->format < AST_FORMAT_MAX_AUDIO) {
00309 f->owner->stream = NULL;
00310 AST_SCHED_DEL(f->owner->sched, f->owner->streamid);
00311 #ifdef HAVE_DAHDI
00312 ast_settimeout(f->owner, 0, NULL, NULL);
00313 #endif
00314 } else {
00315 f->owner->vstream = NULL;
00316 AST_SCHED_DEL(f->owner->sched, f->owner->vstreamid);
00317 }
00318 }
00319
00320 if (f->trans)
00321 ast_translator_free_path(f->trans);
00322
00323 if (f->realfilename && f->filename) {
00324 size = strlen(f->filename) + strlen(f->realfilename) + 15;
00325 cmd = alloca(size);
00326 memset(cmd,0,size);
00327 snprintf(cmd,size,"/bin/mv -f %s %s",f->filename,f->realfilename);
00328 ast_safe_system(cmd);
00329 }
00330
00331 if (f->filename)
00332 free(f->filename);
00333 if (f->realfilename)
00334 free(f->realfilename);
00335 if (f->fmt->close)
00336 f->fmt->close(f);
00337 if (f->f)
00338 fclose(f->f);
00339 if (f->vfs)
00340 ast_closestream(f->vfs);
00341 if (f->orig_chan_name)
00342 free((void *) f->orig_chan_name);
00343 ast_module_unref(f->fmt->module);
00344 }
00345
00346 static struct ast_filestream *get_filestream(struct ast_format *fmt, FILE *bfile)
00347 {
00348 struct ast_filestream *s;
00349
00350 int l = sizeof(*s) + fmt->buf_size + fmt->desc_size;
00351 if ( (s = ao2_alloc(l, filestream_destructor)) == NULL)
00352 return NULL;
00353 s->fmt = fmt;
00354 s->f = bfile;
00355
00356 if (fmt->desc_size)
00357 s->_private = ((char *)(s+1)) + fmt->buf_size;
00358 if (fmt->buf_size)
00359 s->buf = (char *)(s+1);
00360 s->fr.src = fmt->name;
00361 return s;
00362 }
00363
00364
00365
00366
00367
00368 enum wrap_fn { WRAP_OPEN, WRAP_REWRITE };
00369
00370 static int fn_wrapper(struct ast_filestream *s, const char *comment, enum wrap_fn mode)
00371 {
00372 struct ast_format *f = s->fmt;
00373 int ret = -1;
00374
00375 if (mode == WRAP_OPEN && f->open && f->open(s))
00376 ast_log(LOG_WARNING, "Unable to open format %s\n", f->name);
00377 else if (mode == WRAP_REWRITE && f->rewrite && f->rewrite(s, comment))
00378 ast_log(LOG_WARNING, "Unable to rewrite format %s\n", f->name);
00379 else {
00380
00381 ast_module_ref(f->module);
00382 ret = 0;
00383 }
00384 return ret;
00385 }
00386
00387 static int rewrite_wrapper(struct ast_filestream *s, const char *comment)
00388 {
00389 return fn_wrapper(s, comment, WRAP_REWRITE);
00390 }
00391
00392 static int open_wrapper(struct ast_filestream *s)
00393 {
00394 return fn_wrapper(s, NULL, WRAP_OPEN);
00395 }
00396
00397 enum file_action {
00398 ACTION_EXISTS = 1,
00399 ACTION_DELETE,
00400 ACTION_RENAME,
00401 ACTION_OPEN,
00402 ACTION_COPY
00403 };
00404
00405
00406
00407
00408
00409
00410
00411
00412
00413
00414 static int ast_filehelper(const char *filename, const void *arg2, const char *fmt, const enum file_action action)
00415 {
00416 struct ast_format *f;
00417 int res = (action == ACTION_EXISTS) ? 0 : -1;
00418
00419 if (AST_LIST_LOCK(&formats)) {
00420 ast_log(LOG_WARNING, "Unable to lock format list\n");
00421 return res;
00422 }
00423
00424 AST_LIST_TRAVERSE(&formats, f, list) {
00425 char *stringp, *ext = NULL;
00426
00427 if (fmt && !exts_compare(f->exts, fmt))
00428 continue;
00429
00430
00431
00432
00433
00434 stringp = ast_strdupa(f->exts);
00435 while ( (ext = strsep(&stringp, "|")) ) {
00436 struct stat st;
00437 char *fn = build_filename(filename, ext);
00438
00439 if (fn == NULL)
00440 continue;
00441
00442 if ( stat(fn, &st) ) {
00443 free(fn);
00444 continue;
00445 }
00446
00447
00448
00449 if (action == ACTION_OPEN) {
00450 struct ast_channel *chan = (struct ast_channel *)arg2;
00451 FILE *bfile;
00452 struct ast_filestream *s;
00453
00454 if ( !(chan->writeformat & f->format) &&
00455 !(f->format >= AST_FORMAT_MAX_AUDIO && fmt)) {
00456 free(fn);
00457 continue;
00458 }
00459 if ( (bfile = fopen(fn, "r")) == NULL) {
00460 free(fn);
00461 continue;
00462 }
00463 s = get_filestream(f, bfile);
00464 if (!s) {
00465 fclose(bfile);
00466 free(fn);
00467 continue;
00468 }
00469 if (open_wrapper(s)) {
00470 free(fn);
00471 ast_closestream(s);
00472 continue;
00473 }
00474
00475 res = 1;
00476 s->lasttimeout = -1;
00477 s->fmt = f;
00478 s->trans = NULL;
00479 s->filename = NULL;
00480 if (s->fmt->format < AST_FORMAT_MAX_AUDIO) {
00481 if (chan->stream)
00482 ast_closestream(chan->stream);
00483 chan->stream = s;
00484 } else {
00485 if (chan->vstream)
00486 ast_closestream(chan->vstream);
00487 chan->vstream = s;
00488 }
00489 free(fn);
00490 break;
00491 }
00492 switch (action) {
00493 case ACTION_OPEN:
00494 break;
00495
00496 case ACTION_EXISTS:
00497 res |= f->format;
00498 break;
00499
00500 case ACTION_DELETE:
00501 if ( (res = unlink(fn)) )
00502 ast_log(LOG_WARNING, "unlink(%s) failed: %s\n", fn, strerror(errno));
00503 break;
00504
00505 case ACTION_RENAME:
00506 case ACTION_COPY: {
00507 char *nfn = build_filename((const char *)arg2, ext);
00508 if (!nfn)
00509 ast_log(LOG_WARNING, "Out of memory\n");
00510 else {
00511 res = action == ACTION_COPY ? copy(fn, nfn) : rename(fn, nfn);
00512 if (res)
00513 ast_log(LOG_WARNING, "%s(%s,%s) failed: %s\n",
00514 action == ACTION_COPY ? "copy" : "rename",
00515 fn, nfn, strerror(errno));
00516 free(nfn);
00517 }
00518 }
00519 break;
00520
00521 default:
00522 ast_log(LOG_WARNING, "Unknown helper %d\n", action);
00523 }
00524 free(fn);
00525 }
00526 }
00527 AST_LIST_UNLOCK(&formats);
00528 return res;
00529 }
00530
00531 static int is_absolute_path(const char *filename)
00532 {
00533 return filename[0] == '/';
00534 }
00535
00536 static int fileexists_test(const char *filename, const char *fmt, const char *lang,
00537 char *buf, int buflen)
00538 {
00539 if (buf == NULL) {
00540 return -1;
00541 }
00542
00543 if (ast_language_is_prefix && !is_absolute_path(filename)) {
00544 if (lang) {
00545 snprintf(buf, buflen, "%s/%s", lang, filename);
00546 } else {
00547 snprintf(buf, buflen, "%s", filename);
00548 }
00549 } else {
00550 strcpy(buf, filename);
00551 if (lang) {
00552
00553 const char *c = strrchr(filename, '/');
00554 int offset = c ? c - filename + 1 : 0;
00555 snprintf(buf + offset, buflen - offset, "%s/%s", lang, filename + offset);
00556 }
00557 }
00558
00559 return ast_filehelper(buf, NULL, fmt, ACTION_EXISTS);
00560 }
00561
00562
00563
00564
00565
00566
00567
00568
00569
00570
00571
00572
00573 static int fileexists_core(const char *filename, const char *fmt, const char *preflang,
00574 char *buf, int buflen)
00575 {
00576 int res = -1;
00577 char *lang = NULL;
00578
00579 if (buf == NULL) {
00580 return -1;
00581 }
00582
00583
00584
00585
00586
00587
00588
00589
00590
00591 if (!ast_strlen_zero(preflang)) {
00592
00593 if ((res = fileexists_test(filename, fmt, preflang, buf, buflen)) > 0) {
00594 return res;
00595 } else {
00596
00597 char *postfix = NULL;
00598 postfix = lang = ast_strdupa(preflang);
00599
00600 strsep(&postfix, "_");
00601 if (postfix) {
00602 if ((res = fileexists_test(filename, fmt, lang, buf, buflen)) > 0) {
00603 return res;
00604 }
00605 }
00606 }
00607 }
00608
00609
00610 if ((res = fileexists_test(filename, fmt, NULL, buf, buflen)) > 0) {
00611 return res;
00612 }
00613
00614
00615 if ((ast_strlen_zero(preflang) || strcmp(preflang, DEFAULT_LANGUAGE)) && (ast_strlen_zero(lang) || strcmp(lang, DEFAULT_LANGUAGE))) {
00616 if ((res = fileexists_test(filename, fmt, DEFAULT_LANGUAGE, buf, buflen)) > 0) {
00617 return res;
00618 }
00619 }
00620
00621 return 0;
00622 }
00623
00624 struct ast_filestream *ast_openstream(struct ast_channel *chan, const char *filename, const char *preflang)
00625 {
00626 return ast_openstream_full(chan, filename, preflang, 0);
00627 }
00628
00629 struct ast_filestream *ast_openstream_full(struct ast_channel *chan, const char *filename, const char *preflang, int asis)
00630 {
00631
00632
00633
00634
00635
00636 int fmts, res, buflen;
00637 char *buf;
00638
00639 if (!asis) {
00640
00641 ast_stopstream(chan);
00642 if (chan->generator)
00643 ast_deactivate_generator(chan);
00644 }
00645 if (preflang == NULL)
00646 preflang = "";
00647 buflen = strlen(preflang) + strlen(filename) + 4;
00648 buf = alloca(buflen);
00649 if (buf == NULL)
00650 return NULL;
00651 fmts = fileexists_core(filename, NULL, preflang, buf, buflen);
00652 if (fmts > 0)
00653 fmts &= AST_FORMAT_AUDIO_MASK;
00654 if (fmts < 1) {
00655 ast_log(LOG_WARNING, "File %s does not exist in any format\n", filename);
00656 return NULL;
00657 }
00658 chan->oldwriteformat = chan->writeformat;
00659
00660 res = ast_set_write_format(chan, fmts);
00661 res = ast_filehelper(buf, chan, NULL, ACTION_OPEN);
00662 if (res >= 0)
00663 return chan->stream;
00664 return NULL;
00665 }
00666
00667 struct ast_filestream *ast_openvstream(struct ast_channel *chan, const char *filename, const char *preflang)
00668 {
00669
00670
00671
00672 unsigned int format;
00673 char *buf;
00674 int buflen;
00675
00676 if (preflang == NULL)
00677 preflang = "";
00678 buflen = strlen(preflang) + strlen(filename) + 4;
00679 buf = alloca(buflen);
00680 if (buf == NULL)
00681 return NULL;
00682
00683 for (format = AST_FORMAT_MAX_AUDIO << 1; format <= AST_FORMAT_MAX_VIDEO; format = format << 1) {
00684 int fd;
00685 const char *fmt;
00686
00687 if (!(chan->nativeformats & format))
00688 continue;
00689 fmt = ast_getformatname(format);
00690 if ( fileexists_core(filename, fmt, preflang, buf, buflen) < 1)
00691 continue;
00692 fd = ast_filehelper(buf, chan, fmt, ACTION_OPEN);
00693 if (fd >= 0)
00694 return chan->vstream;
00695 ast_log(LOG_WARNING, "File %s has video but couldn't be opened\n", filename);
00696 }
00697 return NULL;
00698 }
00699
00700 struct ast_frame *ast_readframe(struct ast_filestream *s)
00701 {
00702 struct ast_frame *f = NULL;
00703 int whennext = 0;
00704 if (s && s->fmt)
00705 f = s->fmt->read(s, &whennext);
00706 if (f) {
00707 ast_set_flag(f, AST_FRFLAG_FROM_FILESTREAM);
00708 ao2_ref(s, +1);
00709 }
00710 return f;
00711 }
00712
00713 enum fsread_res {
00714 FSREAD_FAILURE,
00715 FSREAD_SUCCESS_SCHED,
00716 FSREAD_SUCCESS_NOSCHED,
00717 };
00718
00719 static int ast_fsread_audio(const void *data);
00720
00721 static enum fsread_res ast_readaudio_callback(struct ast_filestream *s)
00722 {
00723 int whennext = 0;
00724
00725 while (!whennext) {
00726 struct ast_frame *fr;
00727
00728 if (s->orig_chan_name && strcasecmp(s->owner->name, s->orig_chan_name))
00729 goto return_failure;
00730
00731 fr = s->fmt->read(s, &whennext);
00732 if (fr) {
00733 ast_set_flag(fr, AST_FRFLAG_FROM_FILESTREAM);
00734 ao2_ref(s, +1);
00735 }
00736 if (!fr || ast_write(s->owner, fr) ) {
00737 if (fr) {
00738 ast_log(LOG_WARNING, "Failed to write frame\n");
00739 ast_frfree(fr);
00740 }
00741 goto return_failure;
00742 }
00743 if (fr) {
00744 ast_frfree(fr);
00745 }
00746 }
00747 if (whennext != s->lasttimeout) {
00748 #ifdef HAVE_DAHDI
00749 if (s->owner->timingfd > -1) {
00750 int zap_timer_samples = whennext;
00751 int rate;
00752
00753 if ((rate = ast_format_rate(s->fmt->format)) != 8000) {
00754 float factor;
00755 factor = ((float) rate) / ((float) 8000.0);
00756 zap_timer_samples = (int) ( ((float) zap_timer_samples) / factor );
00757 }
00758 ast_settimeout(s->owner, zap_timer_samples, ast_fsread_audio, s);
00759 } else
00760 #endif
00761 s->owner->streamid = ast_sched_add(s->owner->sched,
00762 whennext / (ast_format_rate(s->fmt->format) / 1000),
00763 ast_fsread_audio, s);
00764 s->lasttimeout = whennext;
00765 return FSREAD_SUCCESS_NOSCHED;
00766 }
00767 return FSREAD_SUCCESS_SCHED;
00768
00769 return_failure:
00770 s->owner->streamid = -1;
00771 #ifdef HAVE_DAHDI
00772 ast_settimeout(s->owner, 0, NULL, NULL);
00773 #endif
00774 return FSREAD_FAILURE;
00775 }
00776
00777 static int ast_fsread_audio(const void *data)
00778 {
00779 struct ast_filestream *fs = (struct ast_filestream *)data;
00780 enum fsread_res res;
00781
00782 res = ast_readaudio_callback(fs);
00783
00784 if (res == FSREAD_SUCCESS_SCHED)
00785 return 1;
00786
00787 return 0;
00788 }
00789
00790 static int ast_fsread_video(const void *data);
00791
00792 static enum fsread_res ast_readvideo_callback(struct ast_filestream *s)
00793 {
00794 int whennext = 0;
00795
00796 while (!whennext) {
00797 struct ast_frame *fr = s->fmt->read(s, &whennext);
00798 if (!fr || ast_write(s->owner, fr)) {
00799 if (fr)
00800 ast_log(LOG_WARNING, "Failed to write frame\n");
00801 s->owner->vstreamid = -1;
00802 return FSREAD_FAILURE;
00803 }
00804 }
00805
00806 if (whennext != s->lasttimeout) {
00807 s->owner->vstreamid = ast_sched_add(s->owner->sched,
00808 whennext / (ast_format_rate(s->fmt->format) / 1000),
00809 ast_fsread_video, s);
00810 s->lasttimeout = whennext;
00811 return FSREAD_SUCCESS_NOSCHED;
00812 }
00813
00814 return FSREAD_SUCCESS_SCHED;
00815 }
00816
00817 static int ast_fsread_video(const void *data)
00818 {
00819 struct ast_filestream *fs = (struct ast_filestream *)data;
00820 enum fsread_res res;
00821
00822 res = ast_readvideo_callback(fs);
00823
00824 if (res == FSREAD_SUCCESS_SCHED)
00825 return 1;
00826
00827 return 0;
00828 }
00829
00830 int ast_applystream(struct ast_channel *chan, struct ast_filestream *s)
00831 {
00832 s->owner = chan;
00833 return 0;
00834 }
00835
00836 int ast_playstream(struct ast_filestream *s)
00837 {
00838 enum fsread_res res;
00839
00840 if (s->fmt->format < AST_FORMAT_MAX_AUDIO)
00841 res = ast_readaudio_callback(s);
00842 else
00843 res = ast_readvideo_callback(s);
00844
00845 return (res == FSREAD_FAILURE) ? -1 : 0;
00846 }
00847
00848 int ast_seekstream(struct ast_filestream *fs, off_t sample_offset, int whence)
00849 {
00850 return fs->fmt->seek(fs, sample_offset, whence);
00851 }
00852
00853 int ast_truncstream(struct ast_filestream *fs)
00854 {
00855 return fs->fmt->trunc(fs);
00856 }
00857
00858 off_t ast_tellstream(struct ast_filestream *fs)
00859 {
00860 return fs->fmt->tell(fs);
00861 }
00862
00863 int ast_stream_fastforward(struct ast_filestream *fs, off_t ms)
00864 {
00865 return ast_seekstream(fs, ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
00866 }
00867
00868 int ast_stream_rewind(struct ast_filestream *fs, off_t ms)
00869 {
00870 return ast_seekstream(fs, -ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
00871 }
00872
00873 int ast_closestream(struct ast_filestream *f)
00874 {
00875
00876 if (ast_test_flag(&f->fr, AST_FRFLAG_FROM_FILESTREAM)) {
00877
00878
00879
00880
00881
00882
00883
00884
00885
00886 ao2_ref(f, -1);
00887 return 0;
00888 }
00889
00890 ao2_ref(f, -1);
00891 return 0;
00892 }
00893
00894
00895
00896
00897
00898 int ast_fileexists(const char *filename, const char *fmt, const char *preflang)
00899 {
00900 char *buf;
00901 int buflen;
00902
00903 if (preflang == NULL)
00904 preflang = "";
00905 buflen = strlen(preflang) + strlen(filename) + 4;
00906 buf = alloca(buflen);
00907 if (buf == NULL)
00908 return 0;
00909 return fileexists_core(filename, fmt, preflang, buf, buflen);
00910 }
00911
00912 int ast_filedelete(const char *filename, const char *fmt)
00913 {
00914 return ast_filehelper(filename, NULL, fmt, ACTION_DELETE);
00915 }
00916
00917 int ast_filerename(const char *filename, const char *filename2, const char *fmt)
00918 {
00919 return ast_filehelper(filename, filename2, fmt, ACTION_RENAME);
00920 }
00921
00922 int ast_filecopy(const char *filename, const char *filename2, const char *fmt)
00923 {
00924 return ast_filehelper(filename, filename2, fmt, ACTION_COPY);
00925 }
00926
00927 int ast_streamfile(struct ast_channel *chan, const char *filename, const char *preflang)
00928 {
00929 struct ast_filestream *fs;
00930 struct ast_filestream *vfs=NULL;
00931 char fmt[256];
00932
00933 fs = ast_openstream(chan, filename, preflang);
00934 if (fs)
00935 vfs = ast_openvstream(chan, filename, preflang);
00936 if (vfs)
00937 ast_log(LOG_DEBUG, "Ooh, found a video stream, too, format %s\n", ast_getformatname(vfs->fmt->format));
00938 if (fs){
00939 int res;
00940 if (ast_test_flag(chan, AST_FLAG_MASQ_NOSTREAM))
00941 fs->orig_chan_name = ast_strdup(chan->name);
00942 if (ast_applystream(chan, fs))
00943 return -1;
00944 if (vfs && ast_applystream(chan, vfs))
00945 return -1;
00946 res = ast_playstream(fs);
00947 if (!res && vfs)
00948 res = ast_playstream(vfs);
00949 if (option_verbose > 2)
00950 ast_verbose(VERBOSE_PREFIX_3 "<%s> Playing '%s' (language '%s')\n", chan->name, filename, preflang ? preflang : "default");
00951
00952 return res;
00953 }
00954 ast_log(LOG_WARNING, "Unable to open %s (format %s): %s\n", filename, ast_getformatname_multiple(fmt, sizeof(fmt), chan->nativeformats), strerror(errno));
00955 return -1;
00956 }
00957
00958 struct ast_filestream *ast_readfile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
00959 {
00960 FILE *bfile;
00961 struct ast_format *f;
00962 struct ast_filestream *fs = NULL;
00963 char *fn;
00964
00965 if (AST_LIST_LOCK(&formats)) {
00966 ast_log(LOG_WARNING, "Unable to lock format list\n");
00967 return NULL;
00968 }
00969
00970 AST_LIST_TRAVERSE(&formats, f, list) {
00971 fs = NULL;
00972 if (!exts_compare(f->exts, type))
00973 continue;
00974
00975 fn = build_filename(filename, type);
00976 errno = 0;
00977 bfile = fopen(fn, "r");
00978 if (!bfile || (fs = get_filestream(f, bfile)) == NULL ||
00979 open_wrapper(fs) ) {
00980 ast_log(LOG_WARNING, "Unable to open %s\n", fn);
00981 if (fs) {
00982 ast_closestream(fs);
00983 }
00984 fs = NULL;
00985 bfile = NULL;
00986 free(fn);
00987 continue;
00988 }
00989
00990 fs->trans = NULL;
00991 fs->fmt = f;
00992 fs->flags = flags;
00993 fs->mode = mode;
00994 fs->filename = strdup(filename);
00995 fs->vfs = NULL;
00996 break;
00997 }
00998
00999 AST_LIST_UNLOCK(&formats);
01000 if (!fs)
01001 ast_log(LOG_WARNING, "No such format '%s'\n", type);
01002
01003 return fs;
01004 }
01005
01006 struct ast_filestream *ast_writefile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
01007 {
01008 int fd, myflags = 0;
01009
01010 FILE *bfile = NULL;
01011 struct ast_format *f;
01012 struct ast_filestream *fs = NULL;
01013 char *buf = NULL;
01014 size_t size = 0;
01015 int format_found = 0;
01016
01017 if (AST_LIST_LOCK(&formats)) {
01018 ast_log(LOG_WARNING, "Unable to lock format list\n");
01019 return NULL;
01020 }
01021
01022
01023
01024 if (flags & O_APPEND) {
01025 flags &= ~O_APPEND;
01026 } else {
01027 myflags = O_TRUNC;
01028 }
01029
01030 myflags |= O_WRONLY | O_CREAT;
01031
01032
01033
01034
01035 AST_LIST_TRAVERSE(&formats, f, list) {
01036 char *fn, *orig_fn = NULL;
01037 if (fs)
01038 break;
01039
01040 if (!exts_compare(f->exts, type))
01041 continue;
01042 else
01043 format_found = 1;
01044
01045 fn = build_filename(filename, type);
01046 fd = open(fn, flags | myflags, mode);
01047 if (fd > -1) {
01048
01049 bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
01050 if (!bfile) {
01051 ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
01052 close(fd);
01053 fd = -1;
01054 }
01055 }
01056
01057 if (ast_opt_cache_record_files && (fd > -1)) {
01058 char *c;
01059
01060 fclose(bfile);
01061
01062
01063
01064
01065 orig_fn = ast_strdupa(fn);
01066 for (c = fn; *c; c++)
01067 if (*c == '/')
01068 *c = '_';
01069
01070 size = strlen(fn) + strlen(record_cache_dir) + 2;
01071 buf = alloca(size);
01072 strcpy(buf, record_cache_dir);
01073 strcat(buf, "/");
01074 strcat(buf, fn);
01075 free(fn);
01076 fn = buf;
01077 fd = open(fn, flags | myflags, mode);
01078 if (fd > -1) {
01079
01080 bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
01081 if (!bfile) {
01082 ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
01083 close(fd);
01084 fd = -1;
01085 }
01086 }
01087 }
01088 if (fd > -1) {
01089 errno = 0;
01090 fs = get_filestream(f, bfile);
01091 if (!fs || rewrite_wrapper(fs, comment)) {
01092 ast_log(LOG_WARNING, "Unable to rewrite %s\n", fn);
01093 close(fd);
01094 if (orig_fn) {
01095 unlink(fn);
01096 unlink(orig_fn);
01097 }
01098 if (fs) {
01099 ast_closestream(fs);
01100 fs = NULL;
01101 }
01102 continue;
01103 }
01104 fs->trans = NULL;
01105 fs->fmt = f;
01106 fs->flags = flags;
01107 fs->mode = mode;
01108 if (orig_fn) {
01109 fs->realfilename = strdup(orig_fn);
01110 fs->filename = strdup(fn);
01111 } else {
01112 fs->realfilename = NULL;
01113 fs->filename = strdup(filename);
01114 }
01115 fs->vfs = NULL;
01116
01117 f->seek(fs, 0, SEEK_END);
01118 } else if (errno != EEXIST) {
01119 ast_log(LOG_WARNING, "Unable to open file %s: %s\n", fn, strerror(errno));
01120 if (orig_fn)
01121 unlink(orig_fn);
01122 }
01123
01124 if (!buf)
01125 free(fn);
01126 }
01127
01128 AST_LIST_UNLOCK(&formats);
01129
01130 if (!format_found)
01131 ast_log(LOG_WARNING, "No such format '%s'\n", type);
01132
01133 return fs;
01134 }
01135
01136
01137
01138
01139 static int waitstream_core(struct ast_channel *c, const char *breakon,
01140 const char *forward, const char *rewind, int skip_ms,
01141 int audiofd, int cmdfd, const char *context)
01142 {
01143 const char *orig_chan_name = NULL;
01144 int err = 0;
01145
01146 if (!breakon)
01147 breakon = "";
01148 if (!forward)
01149 forward = "";
01150 if (!rewind)
01151 rewind = "";
01152
01153
01154 ast_set_flag(c, AST_FLAG_END_DTMF_ONLY);
01155
01156 if (ast_test_flag(c, AST_FLAG_MASQ_NOSTREAM))
01157 orig_chan_name = ast_strdupa(c->name);
01158
01159 while (c->stream) {
01160 int res;
01161 int ms;
01162
01163 if (orig_chan_name && strcasecmp(orig_chan_name, c->name)) {
01164 ast_stopstream(c);
01165 err = 1;
01166 break;
01167 }
01168
01169 ms = ast_sched_wait(c->sched);
01170
01171 if (ms < 0 && !c->timingfunc) {
01172 ast_stopstream(c);
01173 break;
01174 }
01175 if (ms < 0)
01176 ms = 1000;
01177 if (cmdfd < 0) {
01178 res = ast_waitfor(c, ms);
01179 if (res < 0) {
01180 ast_log(LOG_WARNING, "Select failed (%s)\n", strerror(errno));
01181 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01182 return res;
01183 }
01184 } else {
01185 int outfd;
01186 struct ast_channel *rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms);
01187 if (!rchan && (outfd < 0) && (ms)) {
01188
01189 if (errno == EINTR)
01190 continue;
01191 ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno));
01192 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01193 return -1;
01194 } else if (outfd > -1) {
01195
01196 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01197 return 1;
01198 }
01199
01200 res = rchan ? 1 : 0;
01201 }
01202 if (res > 0) {
01203 struct ast_frame *fr = ast_read(c);
01204 if (!fr) {
01205 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01206 return -1;
01207 }
01208 switch(fr->frametype) {
01209 case AST_FRAME_DTMF_END:
01210 if (context) {
01211 const char exten[2] = { fr->subclass, '\0' };
01212 if (ast_exists_extension(c, context, exten, 1, c->cid.cid_num)) {
01213 res = fr->subclass;
01214 ast_frfree(fr);
01215 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01216 return res;
01217 }
01218 } else {
01219 res = fr->subclass;
01220 if (strchr(forward,res)) {
01221 ast_stream_fastforward(c->stream, skip_ms);
01222 } else if (strchr(rewind,res)) {
01223 ast_stream_rewind(c->stream, skip_ms);
01224 } else if (strchr(breakon, res)) {
01225 ast_frfree(fr);
01226 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01227 return res;
01228 }
01229 }
01230 break;
01231 case AST_FRAME_CONTROL:
01232 switch(fr->subclass) {
01233 case AST_CONTROL_HANGUP:
01234 case AST_CONTROL_BUSY:
01235 case AST_CONTROL_CONGESTION:
01236 ast_frfree(fr);
01237 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01238 return -1;
01239 case AST_CONTROL_RINGING:
01240 case AST_CONTROL_ANSWER:
01241 case AST_CONTROL_VIDUPDATE:
01242 case AST_CONTROL_SRCUPDATE:
01243 case AST_CONTROL_HOLD:
01244 case AST_CONTROL_UNHOLD:
01245 case AST_CONTROL_PROGRESS:
01246 case AST_CONTROL_PROCEEDING:
01247
01248 break;
01249 default:
01250 ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", fr->subclass);
01251 }
01252 break;
01253 case AST_FRAME_VOICE:
01254
01255 if (audiofd > -1) {
01256 if (write(audiofd, fr->data, fr->datalen) < 0) {
01257 ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno));
01258 }
01259 }
01260 default:
01261
01262 break;
01263 }
01264 ast_frfree(fr);
01265 }
01266 ast_sched_runq(c->sched);
01267 }
01268
01269 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01270
01271 return (err || c->_softhangup) ? -1 : 0;
01272 }
01273
01274 int ast_waitstream_fr(struct ast_channel *c, const char *breakon, const char *forward, const char *rewind, int ms)
01275 {
01276 return waitstream_core(c, breakon, forward, rewind, ms,
01277 -1 , -1 , NULL );
01278 }
01279
01280 int ast_waitstream(struct ast_channel *c, const char *breakon)
01281 {
01282 return waitstream_core(c, breakon, NULL, NULL, 0, -1, -1, NULL);
01283 }
01284
01285 int ast_waitstream_full(struct ast_channel *c, const char *breakon, int audiofd, int cmdfd)
01286 {
01287 return waitstream_core(c, breakon, NULL, NULL, 0,
01288 audiofd, cmdfd, NULL );
01289 }
01290
01291 int ast_waitstream_exten(struct ast_channel *c, const char *context)
01292 {
01293
01294
01295
01296 if (!context)
01297 context = c->context;
01298 return waitstream_core(c, NULL, NULL, NULL, 0,
01299 -1, -1, context);
01300 }
01301
01302 void ast_filestream_frame_freed(struct ast_frame *fr)
01303 {
01304 struct ast_filestream *fs;
01305
01306 ast_clear_flag(fr, AST_FRFLAG_FROM_FILESTREAM);
01307
01308 fs = (struct ast_filestream *) (((char *) fr) - offsetof(struct ast_filestream, fr));
01309
01310 ao2_ref(fs, -1);
01311 }
01312
01313
01314
01315
01316
01317
01318 int ast_stream_and_wait(struct ast_channel *chan, const char *file,
01319 const char *language, const char *digits)
01320 {
01321 int res = 0;
01322 if (!ast_strlen_zero(file)) {
01323 res = ast_streamfile(chan, file, language);
01324 if (!res)
01325 res = ast_waitstream(chan, digits);
01326 }
01327 return res;
01328 }
01329
01330 static int show_file_formats(int fd, int argc, char *argv[])
01331 {
01332 #define FORMAT "%-10s %-10s %-20s\n"
01333 #define FORMAT2 "%-10s %-10s %-20s\n"
01334 struct ast_format *f;
01335 int count_fmt = 0;
01336
01337 if (argc != 4)
01338 return RESULT_SHOWUSAGE;
01339 ast_cli(fd, FORMAT, "Format", "Name", "Extensions");
01340
01341 if (AST_LIST_LOCK(&formats)) {
01342 ast_log(LOG_WARNING, "Unable to lock format list\n");
01343 return -1;
01344 }
01345
01346 AST_LIST_TRAVERSE(&formats, f, list) {
01347 ast_cli(fd, FORMAT2, ast_getformatname(f->format), f->name, f->exts);
01348 count_fmt++;
01349 }
01350 AST_LIST_UNLOCK(&formats);
01351 ast_cli(fd, "%d file formats registered.\n", count_fmt);
01352 return RESULT_SUCCESS;
01353 #undef FORMAT
01354 #undef FORMAT2
01355 }
01356
01357 static int show_file_formats_deprecated(int fd, int argc, char *argv[])
01358 {
01359 #define FORMAT "%-10s %-10s %-20s\n"
01360 #define FORMAT2 "%-10s %-10s %-20s\n"
01361 struct ast_format *f;
01362 int count_fmt = 0;
01363
01364 if (argc != 3)
01365 return RESULT_SHOWUSAGE;
01366 ast_cli(fd, FORMAT, "Format", "Name", "Extensions");
01367
01368 if (AST_LIST_LOCK(&formats)) {
01369 ast_log(LOG_WARNING, "Unable to lock format list\n");
01370 return -1;
01371 }
01372
01373 AST_LIST_TRAVERSE(&formats, f, list) {
01374 ast_cli(fd, FORMAT2, ast_getformatname(f->format), f->name, f->exts);
01375 count_fmt++;
01376 }
01377 AST_LIST_UNLOCK(&formats);
01378 ast_cli(fd, "%d file formats registered.\n", count_fmt);
01379 return RESULT_SUCCESS;
01380 #undef FORMAT
01381 #undef FORMAT2
01382 }
01383
01384 char show_file_formats_usage[] =
01385 "Usage: core show file formats\n"
01386 " Displays currently registered file formats (if any)\n";
01387
01388 struct ast_cli_entry cli_show_file_formats_deprecated = {
01389 { "show", "file", "formats" },
01390 show_file_formats_deprecated, NULL,
01391 NULL };
01392
01393 struct ast_cli_entry cli_file[] = {
01394 { { "core", "show", "file", "formats" },
01395 show_file_formats, "Displays file formats",
01396 show_file_formats_usage, NULL, &cli_show_file_formats_deprecated },
01397 };
01398
01399 int ast_file_init(void)
01400 {
01401 ast_cli_register_multiple(cli_file, sizeof(cli_file) / sizeof(struct ast_cli_entry));
01402 return 0;
01403 }