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00030 #include "asterisk.h"
00031
00032 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 380210 $")
00033
00034 #include <dirent.h>
00035 #include <sys/stat.h>
00036 #include <sys/wait.h>
00037 #include <math.h>
00038
00039 #include "asterisk/_private.h"
00040 #include "asterisk/paths.h"
00041 #include "asterisk/mod_format.h"
00042 #include "asterisk/cli.h"
00043 #include "asterisk/channel.h"
00044 #include "asterisk/sched.h"
00045 #include "asterisk/translate.h"
00046 #include "asterisk/utils.h"
00047 #include "asterisk/lock.h"
00048 #include "asterisk/app.h"
00049 #include "asterisk/pbx.h"
00050 #include "asterisk/linkedlists.h"
00051 #include "asterisk/module.h"
00052 #include "asterisk/astobj2.h"
00053 #include "asterisk/test.h"
00054
00055
00056
00057
00058
00059
00060
00061
00062
00063 int ast_language_is_prefix = 1;
00064
00065 static AST_RWLIST_HEAD_STATIC(formats, ast_format);
00066
00067 int __ast_format_register(const struct ast_format *f, struct ast_module *mod)
00068 {
00069 struct ast_format *tmp;
00070
00071 AST_RWLIST_WRLOCK(&formats);
00072 AST_RWLIST_TRAVERSE(&formats, tmp, list) {
00073 if (!strcasecmp(f->name, tmp->name)) {
00074 AST_RWLIST_UNLOCK(&formats);
00075 ast_log(LOG_WARNING, "Tried to register '%s' format, already registered\n", f->name);
00076 return -1;
00077 }
00078 }
00079 if (!(tmp = ast_calloc(1, sizeof(*tmp)))) {
00080 AST_RWLIST_UNLOCK(&formats);
00081 return -1;
00082 }
00083 *tmp = *f;
00084 tmp->module = mod;
00085 if (tmp->buf_size) {
00086
00087
00088
00089
00090 struct _test_align { void *a, *b; } p;
00091 int align = (char *)&p.b - (char *)&p.a;
00092 tmp->buf_size = ((f->buf_size + align - 1) / align) * align;
00093 }
00094
00095 memset(&tmp->list, 0, sizeof(tmp->list));
00096
00097 AST_RWLIST_INSERT_HEAD(&formats, tmp, list);
00098 AST_RWLIST_UNLOCK(&formats);
00099 ast_verb(2, "Registered file format %s, extension(s) %s\n", f->name, f->exts);
00100
00101 return 0;
00102 }
00103
00104 int ast_format_unregister(const char *name)
00105 {
00106 struct ast_format *tmp;
00107 int res = -1;
00108
00109 AST_RWLIST_WRLOCK(&formats);
00110 AST_RWLIST_TRAVERSE_SAFE_BEGIN(&formats, tmp, list) {
00111 if (!strcasecmp(name, tmp->name)) {
00112 AST_RWLIST_REMOVE_CURRENT(list);
00113 ast_free(tmp);
00114 res = 0;
00115 }
00116 }
00117 AST_RWLIST_TRAVERSE_SAFE_END;
00118 AST_RWLIST_UNLOCK(&formats);
00119
00120 if (!res)
00121 ast_verb(2, "Unregistered format %s\n", name);
00122 else
00123 ast_log(LOG_WARNING, "Tried to unregister format %s, already unregistered\n", name);
00124
00125 return res;
00126 }
00127
00128 int ast_stopstream(struct ast_channel *tmp)
00129 {
00130 ast_channel_lock(tmp);
00131
00132
00133 if (tmp->stream) {
00134 ast_closestream(tmp->stream);
00135 tmp->stream = NULL;
00136 if (tmp->oldwriteformat && ast_set_write_format(tmp, tmp->oldwriteformat))
00137 ast_log(LOG_WARNING, "Unable to restore format back to %s\n", ast_getformatname(tmp->oldwriteformat));
00138 }
00139
00140 if (tmp->vstream != NULL) {
00141 ast_closestream(tmp->vstream);
00142 tmp->vstream = NULL;
00143 }
00144
00145 ast_channel_unlock(tmp);
00146
00147 return 0;
00148 }
00149
00150 int ast_writestream(struct ast_filestream *fs, struct ast_frame *f)
00151 {
00152 int res = -1;
00153 int alt = 0;
00154 if (f->frametype == AST_FRAME_VIDEO) {
00155 if (fs->fmt->format & AST_FORMAT_AUDIO_MASK) {
00156
00157 if (!fs->vfs && fs->filename) {
00158 const char *type = ast_getformatname(f->subclass.codec & ~0x1);
00159 fs->vfs = ast_writefile(fs->filename, type, NULL, fs->flags, 0, fs->mode);
00160 ast_debug(1, "Opened video output file\n");
00161 }
00162 if (fs->vfs)
00163 return ast_writestream(fs->vfs, f);
00164
00165 return 0;
00166 } else {
00167
00168 alt = 1;
00169 }
00170 } else if (f->frametype != AST_FRAME_VOICE) {
00171 ast_log(LOG_WARNING, "Tried to write non-voice frame\n");
00172 return -1;
00173 }
00174 if (((fs->fmt->format | alt) & f->subclass.codec) == f->subclass.codec) {
00175 res = fs->fmt->write(fs, f);
00176 if (res < 0)
00177 ast_log(LOG_WARNING, "Natural write failed\n");
00178 else if (res > 0)
00179 ast_log(LOG_WARNING, "Huh??\n");
00180 } else {
00181
00182
00183 if (fs->trans && f->subclass.codec != fs->lastwriteformat) {
00184 ast_translator_free_path(fs->trans);
00185 fs->trans = NULL;
00186 }
00187 if (!fs->trans)
00188 fs->trans = ast_translator_build_path(fs->fmt->format, f->subclass.codec);
00189 if (!fs->trans)
00190 ast_log(LOG_WARNING, "Unable to translate to format %s, source format %s\n",
00191 fs->fmt->name, ast_getformatname(f->subclass.codec));
00192 else {
00193 struct ast_frame *trf;
00194 fs->lastwriteformat = f->subclass.codec;
00195
00196 if ((trf = ast_translate(fs->trans, f, 0))) {
00197 struct ast_frame *cur;
00198
00199
00200 for (cur = trf; cur; cur = AST_LIST_NEXT(cur, frame_list)) {
00201 if ((res = fs->fmt->write(fs, trf))) {
00202 ast_log(LOG_WARNING, "Translated frame write failed\n");
00203 break;
00204 }
00205 }
00206 ast_frfree(trf);
00207 } else {
00208 res = 0;
00209 }
00210 }
00211 }
00212 return res;
00213 }
00214
00215 static int copy(const char *infile, const char *outfile)
00216 {
00217 int ifd, ofd, len;
00218 char buf[4096];
00219
00220 if ((ifd = open(infile, O_RDONLY)) < 0) {
00221 ast_log(LOG_WARNING, "Unable to open %s in read-only mode\n", infile);
00222 return -1;
00223 }
00224 if ((ofd = open(outfile, O_WRONLY | O_TRUNC | O_CREAT, AST_FILE_MODE)) < 0) {
00225 ast_log(LOG_WARNING, "Unable to open %s in write-only mode\n", outfile);
00226 close(ifd);
00227 return -1;
00228 }
00229 while ( (len = read(ifd, buf, sizeof(buf)) ) ) {
00230 int res;
00231 if (len < 0) {
00232 ast_log(LOG_WARNING, "Read failed on %s: %s\n", infile, strerror(errno));
00233 break;
00234 }
00235
00236 res = write(ofd, buf, len);
00237 if (res != len) {
00238 ast_log(LOG_WARNING, "Write failed on %s (%d of %d): %s\n", outfile, res, len, strerror(errno));
00239 len = -1;
00240 break;
00241 }
00242 }
00243 close(ifd);
00244 close(ofd);
00245 if (len < 0) {
00246 unlink(outfile);
00247 return -1;
00248 }
00249 return 0;
00250 }
00251
00252
00253
00254
00255
00256
00257
00258 static char *build_filename(const char *filename, const char *ext)
00259 {
00260 char *fn = NULL;
00261
00262 if (!strcmp(ext, "wav49"))
00263 ext = "WAV";
00264
00265 if (filename[0] == '/') {
00266 if (ast_asprintf(&fn, "%s.%s", filename, ext) < 0) {
00267 fn = NULL;
00268 }
00269 } else {
00270 if (ast_asprintf(&fn, "%s/sounds/%s.%s",
00271 ast_config_AST_DATA_DIR, filename, ext) < 0) {
00272 fn = NULL;
00273 }
00274 }
00275 return fn;
00276 }
00277
00278
00279
00280 static int exts_compare(const char *exts, const char *type)
00281 {
00282 char tmp[256];
00283 char *stringp = tmp, *ext;
00284
00285 ast_copy_string(tmp, exts, sizeof(tmp));
00286 while ((ext = strsep(&stringp, "|"))) {
00287 if (!strcmp(ext, type))
00288 return 1;
00289 }
00290
00291 return 0;
00292 }
00293
00294
00295 static void filestream_close(struct ast_filestream *f)
00296 {
00297
00298 if (f->owner) {
00299 if (f->fmt->format & AST_FORMAT_AUDIO_MASK) {
00300 f->owner->stream = NULL;
00301 AST_SCHED_DEL(f->owner->sched, f->owner->streamid);
00302 ast_settimeout(f->owner, 0, NULL, NULL);
00303 } else if (f->fmt->format & AST_FORMAT_VIDEO_MASK) {
00304 f->owner->vstream = NULL;
00305 AST_SCHED_DEL(f->owner->sched, f->owner->vstreamid);
00306 } else {
00307 ast_log(AST_LOG_WARNING, "Unable to schedule deletion of filestream with unsupported type %s\n", f->fmt->name);
00308 }
00309 }
00310 }
00311
00312 static void filestream_destructor(void *arg)
00313 {
00314 struct ast_filestream *f = arg;
00315 int status;
00316 int pid = -1;
00317
00318
00319 filestream_close(f);
00320
00321
00322 if (f->trans)
00323 ast_translator_free_path(f->trans);
00324
00325 if (f->fmt->close) {
00326 void (*closefn)(struct ast_filestream *) = f->fmt->close;
00327 closefn(f);
00328 }
00329
00330 if (f->f) {
00331 fclose(f->f);
00332 }
00333
00334 if (f->realfilename && f->filename) {
00335 pid = ast_safe_fork(0);
00336 if (!pid) {
00337 execl("/bin/mv", "mv", "-f", f->filename, f->realfilename, SENTINEL);
00338 _exit(1);
00339 }
00340 else if (pid > 0) {
00341
00342 waitpid(pid, &status, 0);
00343 }
00344 }
00345
00346 if (f->filename)
00347 free(f->filename);
00348 if (f->realfilename)
00349 free(f->realfilename);
00350 if (f->vfs)
00351 ast_closestream(f->vfs);
00352 if (f->write_buffer) {
00353 ast_free(f->write_buffer);
00354 }
00355 if (f->orig_chan_name)
00356 free((void *) f->orig_chan_name);
00357 ast_module_unref(f->fmt->module);
00358 }
00359
00360 static struct ast_filestream *get_filestream(struct ast_format *fmt, FILE *bfile)
00361 {
00362 struct ast_filestream *s;
00363
00364 int l = sizeof(*s) + fmt->buf_size + fmt->desc_size;
00365 if ( (s = ao2_alloc(l, filestream_destructor)) == NULL)
00366 return NULL;
00367 s->fmt = fmt;
00368 s->f = bfile;
00369
00370 if (fmt->desc_size)
00371 s->_private = ((char *)(s + 1)) + fmt->buf_size;
00372 if (fmt->buf_size)
00373 s->buf = (char *)(s + 1);
00374 s->fr.src = fmt->name;
00375 return s;
00376 }
00377
00378
00379
00380
00381
00382 enum wrap_fn { WRAP_OPEN, WRAP_REWRITE };
00383
00384 static int fn_wrapper(struct ast_filestream *s, const char *comment, enum wrap_fn mode)
00385 {
00386 struct ast_format *f = s->fmt;
00387 int ret = -1;
00388 int (*openfn)(struct ast_filestream *s);
00389
00390 if (mode == WRAP_OPEN && (openfn = f->open) && openfn(s))
00391 ast_log(LOG_WARNING, "Unable to open format %s\n", f->name);
00392 else if (mode == WRAP_REWRITE && f->rewrite && f->rewrite(s, comment))
00393 ast_log(LOG_WARNING, "Unable to rewrite format %s\n", f->name);
00394 else {
00395
00396 ast_module_ref(f->module);
00397 ret = 0;
00398 }
00399 return ret;
00400 }
00401
00402 static int rewrite_wrapper(struct ast_filestream *s, const char *comment)
00403 {
00404 return fn_wrapper(s, comment, WRAP_REWRITE);
00405 }
00406
00407 static int open_wrapper(struct ast_filestream *s)
00408 {
00409 return fn_wrapper(s, NULL, WRAP_OPEN);
00410 }
00411
00412 enum file_action {
00413 ACTION_EXISTS = 1,
00414 ACTION_DELETE,
00415 ACTION_RENAME,
00416 ACTION_OPEN,
00417 ACTION_COPY
00418 };
00419
00420
00421
00422
00423
00424
00425
00426
00427
00428
00429 static format_t ast_filehelper(const char *filename, const void *arg2, const char *fmt, const enum file_action action)
00430 {
00431 struct ast_format *f;
00432 format_t res = (action == ACTION_EXISTS) ? 0 : -1;
00433
00434 AST_RWLIST_RDLOCK(&formats);
00435
00436 AST_RWLIST_TRAVERSE(&formats, f, list) {
00437 char *stringp, *ext = NULL;
00438
00439 if (fmt && !exts_compare(f->exts, fmt))
00440 continue;
00441
00442
00443
00444
00445
00446 stringp = ast_strdupa(f->exts);
00447 while ( (ext = strsep(&stringp, "|")) ) {
00448 struct stat st;
00449 char *fn = build_filename(filename, ext);
00450
00451 if (fn == NULL)
00452 continue;
00453
00454 if ( stat(fn, &st) ) {
00455 ast_free(fn);
00456 continue;
00457 }
00458
00459
00460
00461 if (action == ACTION_OPEN) {
00462 struct ast_channel *chan = (struct ast_channel *)arg2;
00463 FILE *bfile;
00464 struct ast_filestream *s;
00465
00466 if ( !(chan->writeformat & f->format) &&
00467 !((f->format & AST_FORMAT_AUDIO_MASK && fmt) ||
00468 (f->format & AST_FORMAT_VIDEO_MASK && fmt))) {
00469 ast_free(fn);
00470 continue;
00471 }
00472 if ( (bfile = fopen(fn, "r")) == NULL) {
00473 ast_free(fn);
00474 continue;
00475 }
00476 s = get_filestream(f, bfile);
00477 if (!s) {
00478 fclose(bfile);
00479 ast_free(fn);
00480 continue;
00481 }
00482 if (open_wrapper(s)) {
00483 ast_free(fn);
00484 ast_closestream(s);
00485 continue;
00486 }
00487 if (st.st_size == 0) {
00488 ast_log(LOG_WARNING, "File %s detected to have zero size.\n", fn);
00489 }
00490
00491 res = 1;
00492 s->lasttimeout = -1;
00493 s->fmt = f;
00494 s->trans = NULL;
00495 s->filename = NULL;
00496 if (s->fmt->format & AST_FORMAT_AUDIO_MASK) {
00497 if (chan->stream)
00498 ast_closestream(chan->stream);
00499 chan->stream = s;
00500 } else {
00501 if (chan->vstream)
00502 ast_closestream(chan->vstream);
00503 chan->vstream = s;
00504 }
00505 ast_free(fn);
00506 break;
00507 }
00508 switch (action) {
00509 case ACTION_OPEN:
00510 break;
00511
00512 case ACTION_EXISTS:
00513 res |= f->format;
00514 break;
00515
00516 case ACTION_DELETE:
00517 if ( (res = unlink(fn)) )
00518 ast_log(LOG_WARNING, "unlink(%s) failed: %s\n", fn, strerror(errno));
00519 break;
00520
00521 case ACTION_RENAME:
00522 case ACTION_COPY: {
00523 char *nfn = build_filename((const char *)arg2, ext);
00524 if (!nfn)
00525 ast_log(LOG_WARNING, "Out of memory\n");
00526 else {
00527 res = action == ACTION_COPY ? copy(fn, nfn) : rename(fn, nfn);
00528 if (res)
00529 ast_log(LOG_WARNING, "%s(%s,%s) failed: %s\n",
00530 action == ACTION_COPY ? "copy" : "rename",
00531 fn, nfn, strerror(errno));
00532 ast_free(nfn);
00533 }
00534 }
00535 break;
00536
00537 default:
00538 ast_log(LOG_WARNING, "Unknown helper %d\n", action);
00539 }
00540 ast_free(fn);
00541 }
00542 }
00543 AST_RWLIST_UNLOCK(&formats);
00544 return res;
00545 }
00546
00547 static int is_absolute_path(const char *filename)
00548 {
00549 return filename[0] == '/';
00550 }
00551
00552 static format_t fileexists_test(const char *filename, const char *fmt, const char *lang,
00553 char *buf, int buflen)
00554 {
00555 if (buf == NULL) {
00556 return -1;
00557 }
00558
00559 if (ast_language_is_prefix && !is_absolute_path(filename)) {
00560 if (lang) {
00561 snprintf(buf, buflen, "%s/%s", lang, filename);
00562 } else {
00563 snprintf(buf, buflen, "%s", filename);
00564 }
00565 } else {
00566 strcpy(buf, filename);
00567 if (lang) {
00568
00569 const char *c = strrchr(filename, '/');
00570 int offset = c ? c - filename + 1 : 0;
00571 snprintf(buf + offset, buflen - offset, "%s/%s", lang, filename + offset);
00572 }
00573 }
00574
00575 return ast_filehelper(buf, NULL, fmt, ACTION_EXISTS);
00576 }
00577
00578
00579
00580
00581
00582
00583
00584
00585
00586 static format_t fileexists_core(const char *filename, const char *fmt, const char *preflang,
00587 char *buf, int buflen)
00588 {
00589 format_t res = -1;
00590 char *lang;
00591
00592 if (buf == NULL) {
00593 return -1;
00594 }
00595
00596
00597
00598
00599
00600
00601
00602
00603 lang = ast_strdupa(preflang);
00604
00605
00606 while (!ast_strlen_zero(lang)) {
00607 char *end;
00608
00609 if ((res = fileexists_test(filename, fmt, lang, buf, buflen)) > 0) {
00610 return res;
00611 }
00612
00613 if ((end = strrchr(lang, '_')) != NULL) {
00614 *end = '\0';
00615 continue;
00616 }
00617
00618 break;
00619 }
00620
00621
00622 if ((res = fileexists_test(filename, fmt, NULL, buf, buflen)) > 0) {
00623 return res;
00624 }
00625
00626
00627 if ((ast_strlen_zero(preflang) || strcmp(preflang, DEFAULT_LANGUAGE)) && (ast_strlen_zero(lang) || strcmp(lang, DEFAULT_LANGUAGE))) {
00628 if ((res = fileexists_test(filename, fmt, DEFAULT_LANGUAGE, buf, buflen)) > 0) {
00629 return res;
00630 }
00631 }
00632
00633 return 0;
00634 }
00635
00636 struct ast_filestream *ast_openstream(struct ast_channel *chan, const char *filename, const char *preflang)
00637 {
00638 return ast_openstream_full(chan, filename, preflang, 0);
00639 }
00640
00641 struct ast_filestream *ast_openstream_full(struct ast_channel *chan, const char *filename, const char *preflang, int asis)
00642 {
00643
00644
00645
00646
00647
00648 format_t fmts, res;
00649 int buflen;
00650 char *buf;
00651
00652 if (!asis) {
00653
00654 ast_stopstream(chan);
00655 if (chan->generator)
00656 ast_deactivate_generator(chan);
00657 }
00658 if (preflang == NULL)
00659 preflang = "";
00660 buflen = strlen(preflang) + strlen(filename) + 4;
00661 buf = ast_alloca(buflen);
00662 fmts = fileexists_core(filename, NULL, preflang, buf, buflen);
00663 if (fmts > 0)
00664 fmts &= AST_FORMAT_AUDIO_MASK;
00665 if (fmts < 1) {
00666 ast_log(LOG_WARNING, "File %s does not exist in any format\n", filename);
00667 return NULL;
00668 }
00669 chan->oldwriteformat = chan->writeformat;
00670
00671 res = ast_set_write_format(chan, fmts);
00672 if (res == -1) {
00673 return NULL;
00674 }
00675 res = ast_filehelper(buf, chan, NULL, ACTION_OPEN);
00676 if (res >= 0)
00677 return chan->stream;
00678 return NULL;
00679 }
00680
00681 struct ast_filestream *ast_openvstream(struct ast_channel *chan, const char *filename, const char *preflang)
00682 {
00683
00684
00685
00686 format_t format;
00687 char *buf;
00688 int buflen;
00689
00690 if (preflang == NULL)
00691 preflang = "";
00692 buflen = strlen(preflang) + strlen(filename) + 4;
00693 buf = ast_alloca(buflen);
00694
00695 for (format = AST_FORMAT_FIRST_VIDEO_BIT; format <= AST_FORMAT_VIDEO_MASK; format = format << 1) {
00696 int fd;
00697 const char *fmt;
00698
00699 if (!(chan->nativeformats & format))
00700 continue;
00701 fmt = ast_getformatname(format);
00702 if ( fileexists_core(filename, fmt, preflang, buf, buflen) < 1)
00703 continue;
00704 fd = ast_filehelper(buf, chan, fmt, ACTION_OPEN);
00705 if (fd >= 0)
00706 return chan->vstream;
00707 ast_log(LOG_WARNING, "File %s has video but couldn't be opened\n", filename);
00708 }
00709 return NULL;
00710 }
00711
00712 static struct ast_frame *read_frame(struct ast_filestream *s, int *whennext)
00713 {
00714 struct ast_frame *fr, *new_fr;
00715
00716 if (!s || !s->fmt) {
00717 return NULL;
00718 }
00719
00720 if (!(fr = s->fmt->read(s, whennext))) {
00721 return NULL;
00722 }
00723
00724 if (!(new_fr = ast_frisolate(fr))) {
00725 ast_frfree(fr);
00726 return NULL;
00727 }
00728
00729 if (new_fr != fr) {
00730 ast_frfree(fr);
00731 fr = new_fr;
00732 }
00733
00734 return fr;
00735 }
00736
00737 struct ast_frame *ast_readframe(struct ast_filestream *s)
00738 {
00739 int whennext = 0;
00740
00741 return read_frame(s, &whennext);
00742 }
00743
00744 enum fsread_res {
00745 FSREAD_FAILURE,
00746 FSREAD_SUCCESS_SCHED,
00747 FSREAD_SUCCESS_NOSCHED,
00748 };
00749
00750 static int ast_fsread_audio(const void *data);
00751
00752 static enum fsread_res ast_readaudio_callback(struct ast_filestream *s)
00753 {
00754 int whennext = 0;
00755
00756 while (!whennext) {
00757 struct ast_frame *fr;
00758
00759 if (s->orig_chan_name && strcasecmp(s->owner->name, s->orig_chan_name)) {
00760 goto return_failure;
00761 }
00762
00763 fr = read_frame(s, &whennext);
00764
00765 if (!fr || ast_write(s->owner, fr) ) {
00766 if (fr) {
00767 ast_log(LOG_WARNING, "Failed to write frame\n");
00768 ast_frfree(fr);
00769 }
00770 goto return_failure;
00771 }
00772
00773 if (fr) {
00774 ast_frfree(fr);
00775 }
00776 }
00777
00778 if (whennext != s->lasttimeout) {
00779 if (s->owner->timingfd > -1) {
00780 float samp_rate = (float) ast_format_rate(s->fmt->format);
00781 unsigned int rate;
00782
00783 rate = (unsigned int) roundf(samp_rate / ((float) whennext));
00784
00785 ast_settimeout(s->owner, rate, ast_fsread_audio, s);
00786 } else {
00787 s->owner->streamid = ast_sched_add(s->owner->sched,
00788 whennext / (ast_format_rate(s->fmt->format) / 1000), ast_fsread_audio, s);
00789 }
00790 s->lasttimeout = whennext;
00791 return FSREAD_SUCCESS_NOSCHED;
00792 }
00793 return FSREAD_SUCCESS_SCHED;
00794
00795 return_failure:
00796 s->owner->streamid = -1;
00797 ast_settimeout(s->owner, 0, NULL, NULL);
00798 return FSREAD_FAILURE;
00799 }
00800
00801 static int ast_fsread_audio(const void *data)
00802 {
00803 struct ast_filestream *fs = (struct ast_filestream *)data;
00804 enum fsread_res res;
00805
00806 res = ast_readaudio_callback(fs);
00807
00808 if (res == FSREAD_SUCCESS_SCHED)
00809 return 1;
00810
00811 return 0;
00812 }
00813
00814 static int ast_fsread_video(const void *data);
00815
00816 static enum fsread_res ast_readvideo_callback(struct ast_filestream *s)
00817 {
00818 int whennext = 0;
00819
00820 while (!whennext) {
00821 struct ast_frame *fr = read_frame(s, &whennext);
00822
00823 if (!fr || ast_write(s->owner, fr) ) {
00824 if (fr) {
00825 ast_log(LOG_WARNING, "Failed to write frame\n");
00826 ast_frfree(fr);
00827 }
00828 s->owner->vstreamid = -1;
00829 return FSREAD_FAILURE;
00830 }
00831
00832 if (fr) {
00833 ast_frfree(fr);
00834 }
00835 }
00836
00837 if (whennext != s->lasttimeout) {
00838 s->owner->vstreamid = ast_sched_add(s->owner->sched,
00839 whennext / (ast_format_rate(s->fmt->format) / 1000),
00840 ast_fsread_video, s);
00841 s->lasttimeout = whennext;
00842 return FSREAD_SUCCESS_NOSCHED;
00843 }
00844
00845 return FSREAD_SUCCESS_SCHED;
00846 }
00847
00848 static int ast_fsread_video(const void *data)
00849 {
00850 struct ast_filestream *fs = (struct ast_filestream *)data;
00851 enum fsread_res res;
00852
00853 res = ast_readvideo_callback(fs);
00854
00855 if (res == FSREAD_SUCCESS_SCHED)
00856 return 1;
00857
00858 return 0;
00859 }
00860
00861 int ast_applystream(struct ast_channel *chan, struct ast_filestream *s)
00862 {
00863 s->owner = chan;
00864 return 0;
00865 }
00866
00867 int ast_playstream(struct ast_filestream *s)
00868 {
00869 enum fsread_res res;
00870
00871 if (s->fmt->format & AST_FORMAT_AUDIO_MASK)
00872 res = ast_readaudio_callback(s);
00873 else
00874 res = ast_readvideo_callback(s);
00875
00876 return (res == FSREAD_FAILURE) ? -1 : 0;
00877 }
00878
00879 int ast_seekstream(struct ast_filestream *fs, off_t sample_offset, int whence)
00880 {
00881 return fs->fmt->seek(fs, sample_offset, whence);
00882 }
00883
00884 int ast_truncstream(struct ast_filestream *fs)
00885 {
00886 return fs->fmt->trunc(fs);
00887 }
00888
00889 off_t ast_tellstream(struct ast_filestream *fs)
00890 {
00891 return fs->fmt->tell(fs);
00892 }
00893
00894 int ast_stream_fastforward(struct ast_filestream *fs, off_t ms)
00895 {
00896 return ast_seekstream(fs, ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
00897 }
00898
00899 int ast_stream_rewind(struct ast_filestream *fs, off_t ms)
00900 {
00901 return ast_seekstream(fs, -ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
00902 }
00903
00904 int ast_closestream(struct ast_filestream *f)
00905 {
00906
00907
00908
00909
00910 filestream_close(f);
00911 ao2_ref(f, -1);
00912 return 0;
00913 }
00914
00915
00916
00917
00918
00919 int ast_fileexists(const char *filename, const char *fmt, const char *preflang)
00920 {
00921 char *buf;
00922 int buflen;
00923
00924 if (preflang == NULL)
00925 preflang = "";
00926 buflen = strlen(preflang) + strlen(filename) + 4;
00927 buf = ast_alloca(buflen);
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 off_t pos;
00952 int seekattempt;
00953 int res;
00954
00955 fs = ast_openstream(chan, filename, preflang);
00956 if (!fs) {
00957 ast_log(LOG_WARNING, "Unable to open %s (format %s): %s\n", filename, ast_getformatname_multiple(fmt, sizeof(fmt), chan->nativeformats), strerror(errno));
00958 return -1;
00959 }
00960
00961
00962
00963
00964 pos = ftello(fs->f);
00965 seekattempt = fseeko(fs->f, -1, SEEK_END);
00966 if (seekattempt) {
00967 if (errno == EINVAL) {
00968
00969 return 0;
00970 } else {
00971 ast_seekstream(fs, 0, SEEK_SET);
00972 }
00973 } else {
00974 fseeko(fs->f, pos, SEEK_SET);
00975 }
00976
00977 vfs = ast_openvstream(chan, filename, preflang);
00978 if (vfs) {
00979 ast_debug(1, "Ooh, found a video stream, too, format %s\n", ast_getformatname(vfs->fmt->format));
00980 }
00981
00982 if (ast_test_flag(chan, AST_FLAG_MASQ_NOSTREAM))
00983 fs->orig_chan_name = ast_strdup(chan->name);
00984 if (ast_applystream(chan, fs))
00985 return -1;
00986 if (vfs && ast_applystream(chan, vfs))
00987 return -1;
00988 res = ast_playstream(fs);
00989 if (!res && vfs)
00990 res = ast_playstream(vfs);
00991 ast_verb(3, "<%s> Playing '%s.%s' (language '%s')\n", chan->name, filename, ast_getformatname(chan->writeformat), preflang ? preflang : "default");
00992
00993 return res;
00994 }
00995
00996 struct ast_filestream *ast_readfile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
00997 {
00998 FILE *bfile;
00999 struct ast_format *f;
01000 struct ast_filestream *fs = NULL;
01001 char *fn;
01002 int format_found = 0;
01003
01004 AST_RWLIST_RDLOCK(&formats);
01005
01006 AST_RWLIST_TRAVERSE(&formats, f, list) {
01007 fs = NULL;
01008 if (!exts_compare(f->exts, type))
01009 continue;
01010 else
01011 format_found = 1;
01012
01013 fn = build_filename(filename, type);
01014 if (!fn) {
01015 continue;
01016 }
01017 errno = 0;
01018 bfile = fopen(fn, "r");
01019
01020 if (!bfile || (fs = get_filestream(f, bfile)) == NULL || open_wrapper(fs) ) {
01021 ast_log(LOG_WARNING, "Unable to open %s\n", fn);
01022 if (fs) {
01023 ast_closestream(fs);
01024 }
01025 fs = NULL;
01026 bfile = NULL;
01027 ast_free(fn);
01028 break;
01029 }
01030
01031 fs->trans = NULL;
01032 fs->fmt = f;
01033 fs->flags = flags;
01034 fs->mode = mode;
01035 fs->filename = ast_strdup(filename);
01036 fs->vfs = NULL;
01037 ast_free(fn);
01038 break;
01039 }
01040
01041 AST_RWLIST_UNLOCK(&formats);
01042 if (!format_found)
01043 ast_log(LOG_WARNING, "No such format '%s'\n", type);
01044
01045 return fs;
01046 }
01047
01048 struct ast_filestream *ast_writefile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
01049 {
01050 int fd, myflags = 0;
01051
01052 FILE *bfile = NULL;
01053 struct ast_format *f;
01054 struct ast_filestream *fs = NULL;
01055 char *buf = NULL;
01056 size_t size = 0;
01057 int format_found = 0;
01058
01059 AST_RWLIST_RDLOCK(&formats);
01060
01061
01062
01063 if (flags & O_APPEND) {
01064 flags &= ~O_APPEND;
01065 } else {
01066 myflags = O_TRUNC;
01067 }
01068
01069 myflags |= O_WRONLY | O_CREAT;
01070
01071
01072
01073
01074 AST_RWLIST_TRAVERSE(&formats, f, list) {
01075 char *fn, *orig_fn = NULL;
01076 if (fs)
01077 break;
01078
01079 if (!exts_compare(f->exts, type))
01080 continue;
01081 else
01082 format_found = 1;
01083
01084 fn = build_filename(filename, type);
01085 if (!fn) {
01086 continue;
01087 }
01088 fd = open(fn, flags | myflags, mode);
01089 if (fd > -1) {
01090
01091 bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
01092 if (!bfile) {
01093 ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
01094 close(fd);
01095 fd = -1;
01096 }
01097 }
01098
01099 if (ast_opt_cache_record_files && (fd > -1)) {
01100 char *c;
01101
01102 fclose(bfile);
01103
01104
01105
01106
01107 orig_fn = ast_strdupa(fn);
01108 for (c = fn; *c; c++)
01109 if (*c == '/')
01110 *c = '_';
01111
01112 size = strlen(fn) + strlen(record_cache_dir) + 2;
01113 buf = ast_alloca(size);
01114 strcpy(buf, record_cache_dir);
01115 strcat(buf, "/");
01116 strcat(buf, fn);
01117 ast_free(fn);
01118 fn = buf;
01119 fd = open(fn, flags | myflags, mode);
01120 if (fd > -1) {
01121
01122 bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
01123 if (!bfile) {
01124 ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
01125 close(fd);
01126 fd = -1;
01127 }
01128 }
01129 }
01130 if (fd > -1) {
01131 errno = 0;
01132 fs = get_filestream(f, bfile);
01133 if (fs) {
01134 if ((fs->write_buffer = ast_malloc(32768))) {
01135 setvbuf(fs->f, fs->write_buffer, _IOFBF, 32768);
01136 }
01137 }
01138 if (!fs || rewrite_wrapper(fs, comment)) {
01139 ast_log(LOG_WARNING, "Unable to rewrite %s\n", fn);
01140 close(fd);
01141 if (orig_fn) {
01142 unlink(fn);
01143 unlink(orig_fn);
01144 }
01145 if (fs) {
01146 ast_closestream(fs);
01147 fs = NULL;
01148 }
01149 if (!buf) {
01150 ast_free(fn);
01151 }
01152 continue;
01153 }
01154 fs->trans = NULL;
01155 fs->fmt = f;
01156 fs->flags = flags;
01157 fs->mode = mode;
01158 if (orig_fn) {
01159 fs->realfilename = ast_strdup(orig_fn);
01160 fs->filename = ast_strdup(fn);
01161 } else {
01162 fs->realfilename = NULL;
01163 fs->filename = ast_strdup(filename);
01164 }
01165 fs->vfs = NULL;
01166
01167 f->seek(fs, 0, SEEK_END);
01168 } else if (errno != EEXIST) {
01169 ast_log(LOG_WARNING, "Unable to open file %s: %s\n", fn, strerror(errno));
01170 if (orig_fn)
01171 unlink(orig_fn);
01172 }
01173
01174 if (!buf)
01175 ast_free(fn);
01176 }
01177
01178 AST_RWLIST_UNLOCK(&formats);
01179
01180 if (!format_found)
01181 ast_log(LOG_WARNING, "No such format '%s'\n", type);
01182
01183 return fs;
01184 }
01185
01186
01187
01188
01189 static int waitstream_core(struct ast_channel *c, const char *breakon,
01190 const char *forward, const char *reverse, int skip_ms,
01191 int audiofd, int cmdfd, const char *context)
01192 {
01193 const char *orig_chan_name = NULL;
01194 int err = 0;
01195
01196 if (!breakon)
01197 breakon = "";
01198 if (!forward)
01199 forward = "";
01200 if (!reverse)
01201 reverse = "";
01202
01203
01204 ast_set_flag(c, AST_FLAG_END_DTMF_ONLY);
01205
01206 if (ast_test_flag(c, AST_FLAG_MASQ_NOSTREAM))
01207 orig_chan_name = ast_strdupa(c->name);
01208
01209 while (c->stream) {
01210 int res;
01211 int ms;
01212
01213 if (orig_chan_name && strcasecmp(orig_chan_name, c->name)) {
01214 ast_stopstream(c);
01215 err = 1;
01216 break;
01217 }
01218
01219 ms = ast_sched_wait(c->sched);
01220
01221 if (ms < 0 && !c->timingfunc) {
01222 ast_stopstream(c);
01223 break;
01224 }
01225 if (ms < 0)
01226 ms = 1000;
01227 if (cmdfd < 0) {
01228 res = ast_waitfor(c, ms);
01229 if (res < 0) {
01230 ast_log(LOG_WARNING, "Select failed (%s)\n", strerror(errno));
01231 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01232 return res;
01233 }
01234 } else {
01235 int outfd;
01236 struct ast_channel *rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms);
01237 if (!rchan && (outfd < 0) && (ms)) {
01238
01239 if (errno == EINTR)
01240 continue;
01241 ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno));
01242 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01243 return -1;
01244 } else if (outfd > -1) {
01245
01246 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01247 return 1;
01248 }
01249
01250 res = rchan ? 1 : 0;
01251 }
01252 if (res > 0) {
01253 struct ast_frame *fr = ast_read(c);
01254 if (!fr) {
01255 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01256 return -1;
01257 }
01258 switch (fr->frametype) {
01259 case AST_FRAME_DTMF_END:
01260 if (context) {
01261 const char exten[2] = { fr->subclass.integer, '\0' };
01262 if (ast_exists_extension(c, context, exten, 1,
01263 S_COR(c->caller.id.number.valid, c->caller.id.number.str, NULL))) {
01264 res = fr->subclass.integer;
01265 ast_frfree(fr);
01266 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01267 return res;
01268 }
01269 } else {
01270 res = fr->subclass.integer;
01271 if (strchr(forward, res)) {
01272 int eoftest;
01273 ast_stream_fastforward(c->stream, skip_ms);
01274 eoftest = fgetc(c->stream->f);
01275 if (feof(c->stream->f)) {
01276 ast_stream_rewind(c->stream, skip_ms);
01277 } else {
01278 ungetc(eoftest, c->stream->f);
01279 }
01280 } else if (strchr(reverse, res)) {
01281 ast_stream_rewind(c->stream, skip_ms);
01282 } else if (strchr(breakon, res)) {
01283 ast_frfree(fr);
01284 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01285 return res;
01286 }
01287 }
01288 break;
01289 case AST_FRAME_CONTROL:
01290 switch (fr->subclass.integer) {
01291 case AST_CONTROL_HANGUP:
01292 case AST_CONTROL_BUSY:
01293 case AST_CONTROL_CONGESTION:
01294 ast_frfree(fr);
01295 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01296 return -1;
01297 case AST_CONTROL_RINGING:
01298 case AST_CONTROL_ANSWER:
01299 case AST_CONTROL_VIDUPDATE:
01300 case AST_CONTROL_SRCUPDATE:
01301 case AST_CONTROL_SRCCHANGE:
01302 case AST_CONTROL_HOLD:
01303 case AST_CONTROL_UNHOLD:
01304 case AST_CONTROL_CONNECTED_LINE:
01305 case AST_CONTROL_REDIRECTING:
01306 case AST_CONTROL_AOC:
01307 case AST_CONTROL_UPDATE_RTP_PEER:
01308 case -1:
01309
01310 break;
01311 default:
01312 ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", fr->subclass.integer);
01313 }
01314 break;
01315 case AST_FRAME_VOICE:
01316
01317 if (audiofd > -1) {
01318 if (write(audiofd, fr->data.ptr, fr->datalen) < 0) {
01319 ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno));
01320 }
01321 }
01322 default:
01323
01324 break;
01325 }
01326 ast_frfree(fr);
01327 }
01328 ast_sched_runq(c->sched);
01329 }
01330
01331 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01332
01333 return (err || c->_softhangup) ? -1 : 0;
01334 }
01335
01336 int ast_waitstream_fr(struct ast_channel *c, const char *breakon, const char *forward, const char *reverse, int ms)
01337 {
01338 return waitstream_core(c, breakon, forward, reverse, ms,
01339 -1 , -1 , NULL );
01340 }
01341
01342 int ast_waitstream(struct ast_channel *c, const char *breakon)
01343 {
01344 return waitstream_core(c, breakon, NULL, NULL, 0, -1, -1, NULL);
01345 }
01346
01347 int ast_waitstream_full(struct ast_channel *c, const char *breakon, int audiofd, int cmdfd)
01348 {
01349 return waitstream_core(c, breakon, NULL, NULL, 0,
01350 audiofd, cmdfd, NULL );
01351 }
01352
01353 int ast_waitstream_exten(struct ast_channel *c, const char *context)
01354 {
01355
01356
01357
01358 if (!context)
01359 context = c->context;
01360 return waitstream_core(c, NULL, NULL, NULL, 0,
01361 -1, -1, context);
01362 }
01363
01364
01365
01366
01367
01368
01369 int ast_stream_and_wait(struct ast_channel *chan, const char *file, const char *digits)
01370 {
01371 int res = 0;
01372 if (!ast_strlen_zero(file)) {
01373 ast_test_suite_event_notify("PLAYBACK", "Message: %s", file);
01374 res = ast_streamfile(chan, file, chan->language);
01375 if (!res) {
01376 res = ast_waitstream(chan, digits);
01377 }
01378 }
01379 return res;
01380 }
01381
01382 char *ast_format_str_reduce(char *fmts)
01383 {
01384 struct ast_format *f;
01385 struct ast_format *fmts_ptr[AST_MAX_FORMATS];
01386 char *fmts_str[AST_MAX_FORMATS];
01387 char *stringp, *type;
01388 char *orig = fmts;
01389 int i, j, x, first, found = 0;
01390 int len = strlen(fmts) + 1;
01391 int res;
01392
01393 if (AST_RWLIST_RDLOCK(&formats)) {
01394 ast_log(LOG_WARNING, "Unable to lock format list\n");
01395 return NULL;
01396 }
01397
01398 stringp = ast_strdupa(fmts);
01399
01400 for (x = 0; (type = strsep(&stringp, "|")) && x < AST_MAX_FORMATS; x++) {
01401 AST_RWLIST_TRAVERSE(&formats, f, list) {
01402 if (exts_compare(f->exts, type)) {
01403 found = 1;
01404 break;
01405 }
01406 }
01407
01408 fmts_str[x] = type;
01409 if (found) {
01410 fmts_ptr[x] = f;
01411 } else {
01412 fmts_ptr[x] = NULL;
01413 }
01414 }
01415 AST_RWLIST_UNLOCK(&formats);
01416
01417 first = 1;
01418 for (i = 0; i < x; i++) {
01419
01420 if (!fmts_ptr[i]) {
01421 ast_log(LOG_WARNING, "ignoring unknown format '%s'\n", fmts_str[i]);
01422 continue;
01423 }
01424
01425
01426 if (first) {
01427 res = snprintf(fmts, len, "%s", fmts_str[i]);
01428 fmts += res;
01429 len -= res;
01430 first = 0;
01431 continue;
01432 }
01433
01434 found = 0;
01435 for (j = 0; j < i; j++) {
01436
01437 if (fmts_ptr[j] == fmts_ptr[i]) {
01438 found = 1;
01439 break;
01440 }
01441 }
01442
01443 if (!found) {
01444 res = snprintf(fmts, len, "|%s", fmts_str[i]);
01445 fmts += res;
01446 len -= res;
01447 }
01448 }
01449
01450 if (first) {
01451 ast_log(LOG_WARNING, "no known formats found in format list (%s)\n", orig);
01452 return NULL;
01453 }
01454
01455 return orig;
01456 }
01457
01458 static char *handle_cli_core_show_file_formats(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
01459 {
01460 #define FORMAT "%-10s %-10s %-20s\n"
01461 #define FORMAT2 "%-10s %-10s %-20s\n"
01462 struct ast_format *f;
01463 int count_fmt = 0;
01464
01465 switch (cmd) {
01466 case CLI_INIT:
01467 e->command = "core show file formats";
01468 e->usage =
01469 "Usage: core show file formats\n"
01470 " Displays currently registered file formats (if any).\n";
01471 return NULL;
01472 case CLI_GENERATE:
01473 return NULL;
01474 }
01475
01476 if (a->argc != 4)
01477 return CLI_SHOWUSAGE;
01478
01479 ast_cli(a->fd, FORMAT, "Format", "Name", "Extensions");
01480 ast_cli(a->fd, FORMAT, "------", "----", "----------");
01481
01482 AST_RWLIST_RDLOCK(&formats);
01483 AST_RWLIST_TRAVERSE(&formats, f, list) {
01484 ast_cli(a->fd, FORMAT2, ast_getformatname(f->format), f->name, f->exts);
01485 count_fmt++;
01486 }
01487 AST_RWLIST_UNLOCK(&formats);
01488 ast_cli(a->fd, "%d file formats registered.\n", count_fmt);
01489 return CLI_SUCCESS;
01490 #undef FORMAT
01491 #undef FORMAT2
01492 }
01493
01494 static struct ast_cli_entry cli_file[] = {
01495 AST_CLI_DEFINE(handle_cli_core_show_file_formats, "Displays file formats")
01496 };
01497
01498 static void file_shutdown(void)
01499 {
01500 ast_cli_unregister_multiple(cli_file, ARRAY_LEN(cli_file));
01501 }
01502
01503 int ast_file_init(void)
01504 {
01505 ast_cli_register_multiple(cli_file, ARRAY_LEN(cli_file));
01506 ast_register_atexit(file_shutdown);
01507 return 0;
01508 }