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00030 #include "asterisk.h"
00031
00032 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 369001 $")
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 (asprintf(&fn, "%s.%s", filename, ext) < 0) {
00267 ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
00268 fn = NULL;
00269 }
00270 } else {
00271 if (asprintf(&fn, "%s/sounds/%s.%s",
00272 ast_config_AST_DATA_DIR, filename, ext) < 0) {
00273 ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
00274 fn = NULL;
00275 }
00276 }
00277 return fn;
00278 }
00279
00280
00281
00282 static int exts_compare(const char *exts, const char *type)
00283 {
00284 char tmp[256];
00285 char *stringp = tmp, *ext;
00286
00287 ast_copy_string(tmp, exts, sizeof(tmp));
00288 while ((ext = strsep(&stringp, "|"))) {
00289 if (!strcmp(ext, type))
00290 return 1;
00291 }
00292
00293 return 0;
00294 }
00295
00296
00297 static void filestream_close(struct ast_filestream *f)
00298 {
00299
00300 if (f->owner) {
00301 if (f->fmt->format & AST_FORMAT_AUDIO_MASK) {
00302 f->owner->stream = NULL;
00303 AST_SCHED_DEL(f->owner->sched, f->owner->streamid);
00304 ast_settimeout(f->owner, 0, NULL, NULL);
00305 } else if (f->fmt->format & AST_FORMAT_VIDEO_MASK) {
00306 f->owner->vstream = NULL;
00307 AST_SCHED_DEL(f->owner->sched, f->owner->vstreamid);
00308 } else {
00309 ast_log(AST_LOG_WARNING, "Unable to schedule deletion of filestream with unsupported type %s\n", f->fmt->name);
00310 }
00311 }
00312 }
00313
00314 static void filestream_destructor(void *arg)
00315 {
00316 struct ast_filestream *f = arg;
00317 int status;
00318 int pid = -1;
00319
00320
00321 filestream_close(f);
00322
00323
00324 if (f->trans)
00325 ast_translator_free_path(f->trans);
00326
00327 if (f->realfilename && f->filename) {
00328 pid = ast_safe_fork(0);
00329 if (!pid) {
00330 execl("/bin/mv", "mv", "-f", f->filename, f->realfilename, SENTINEL);
00331 _exit(1);
00332 }
00333 else if (pid > 0) {
00334
00335 waitpid(pid, &status, 0);
00336 }
00337 }
00338
00339 if (f->filename)
00340 free(f->filename);
00341 if (f->realfilename)
00342 free(f->realfilename);
00343 if (f->fmt->close) {
00344 void (*closefn)(struct ast_filestream *) = f->fmt->close;
00345 closefn(f);
00346 }
00347 if (f->f)
00348 fclose(f->f);
00349 if (f->vfs)
00350 ast_closestream(f->vfs);
00351 if (f->write_buffer) {
00352 ast_free(f->write_buffer);
00353 }
00354 if (f->orig_chan_name)
00355 free((void *) f->orig_chan_name);
00356 ast_module_unref(f->fmt->module);
00357 }
00358
00359 static struct ast_filestream *get_filestream(struct ast_format *fmt, FILE *bfile)
00360 {
00361 struct ast_filestream *s;
00362
00363 int l = sizeof(*s) + fmt->buf_size + fmt->desc_size;
00364 if ( (s = ao2_alloc(l, filestream_destructor)) == NULL)
00365 return NULL;
00366 s->fmt = fmt;
00367 s->f = bfile;
00368
00369 if (fmt->desc_size)
00370 s->_private = ((char *)(s + 1)) + fmt->buf_size;
00371 if (fmt->buf_size)
00372 s->buf = (char *)(s + 1);
00373 s->fr.src = fmt->name;
00374 return s;
00375 }
00376
00377
00378
00379
00380
00381 enum wrap_fn { WRAP_OPEN, WRAP_REWRITE };
00382
00383 static int fn_wrapper(struct ast_filestream *s, const char *comment, enum wrap_fn mode)
00384 {
00385 struct ast_format *f = s->fmt;
00386 int ret = -1;
00387 int (*openfn)(struct ast_filestream *s);
00388
00389 if (mode == WRAP_OPEN && (openfn = f->open) && openfn(s))
00390 ast_log(LOG_WARNING, "Unable to open format %s\n", f->name);
00391 else if (mode == WRAP_REWRITE && f->rewrite && f->rewrite(s, comment))
00392 ast_log(LOG_WARNING, "Unable to rewrite format %s\n", f->name);
00393 else {
00394
00395 ast_module_ref(f->module);
00396 ret = 0;
00397 }
00398 return ret;
00399 }
00400
00401 static int rewrite_wrapper(struct ast_filestream *s, const char *comment)
00402 {
00403 return fn_wrapper(s, comment, WRAP_REWRITE);
00404 }
00405
00406 static int open_wrapper(struct ast_filestream *s)
00407 {
00408 return fn_wrapper(s, NULL, WRAP_OPEN);
00409 }
00410
00411 enum file_action {
00412 ACTION_EXISTS = 1,
00413 ACTION_DELETE,
00414 ACTION_RENAME,
00415 ACTION_OPEN,
00416 ACTION_COPY
00417 };
00418
00419
00420
00421
00422
00423
00424
00425
00426
00427
00428 static format_t ast_filehelper(const char *filename, const void *arg2, const char *fmt, const enum file_action action)
00429 {
00430 struct ast_format *f;
00431 format_t res = (action == ACTION_EXISTS) ? 0 : -1;
00432
00433 AST_RWLIST_RDLOCK(&formats);
00434
00435 AST_RWLIST_TRAVERSE(&formats, f, list) {
00436 char *stringp, *ext = NULL;
00437
00438 if (fmt && !exts_compare(f->exts, fmt))
00439 continue;
00440
00441
00442
00443
00444
00445 stringp = ast_strdupa(f->exts);
00446 while ( (ext = strsep(&stringp, "|")) ) {
00447 struct stat st;
00448 char *fn = build_filename(filename, ext);
00449
00450 if (fn == NULL)
00451 continue;
00452
00453 if ( stat(fn, &st) ) {
00454 ast_free(fn);
00455 continue;
00456 }
00457
00458
00459
00460 if (action == ACTION_OPEN) {
00461 struct ast_channel *chan = (struct ast_channel *)arg2;
00462 FILE *bfile;
00463 struct ast_filestream *s;
00464
00465 if ( !(chan->writeformat & f->format) &&
00466 !((f->format & AST_FORMAT_AUDIO_MASK && fmt) ||
00467 (f->format & AST_FORMAT_VIDEO_MASK && fmt))) {
00468 ast_free(fn);
00469 continue;
00470 }
00471 if ( (bfile = fopen(fn, "r")) == NULL) {
00472 ast_free(fn);
00473 continue;
00474 }
00475 s = get_filestream(f, bfile);
00476 if (!s) {
00477 fclose(bfile);
00478 ast_free(fn);
00479 continue;
00480 }
00481 if (open_wrapper(s)) {
00482 ast_free(fn);
00483 ast_closestream(s);
00484 continue;
00485 }
00486 if (st.st_size == 0) {
00487 ast_log(LOG_WARNING, "File %s detected to have zero size.\n", fn);
00488 }
00489
00490 res = 1;
00491 s->lasttimeout = -1;
00492 s->fmt = f;
00493 s->trans = NULL;
00494 s->filename = NULL;
00495 if (s->fmt->format & AST_FORMAT_AUDIO_MASK) {
00496 if (chan->stream)
00497 ast_closestream(chan->stream);
00498 chan->stream = s;
00499 } else {
00500 if (chan->vstream)
00501 ast_closestream(chan->vstream);
00502 chan->vstream = s;
00503 }
00504 ast_free(fn);
00505 break;
00506 }
00507 switch (action) {
00508 case ACTION_OPEN:
00509 break;
00510
00511 case ACTION_EXISTS:
00512 res |= f->format;
00513 break;
00514
00515 case ACTION_DELETE:
00516 if ( (res = unlink(fn)) )
00517 ast_log(LOG_WARNING, "unlink(%s) failed: %s\n", fn, strerror(errno));
00518 break;
00519
00520 case ACTION_RENAME:
00521 case ACTION_COPY: {
00522 char *nfn = build_filename((const char *)arg2, ext);
00523 if (!nfn)
00524 ast_log(LOG_WARNING, "Out of memory\n");
00525 else {
00526 res = action == ACTION_COPY ? copy(fn, nfn) : rename(fn, nfn);
00527 if (res)
00528 ast_log(LOG_WARNING, "%s(%s,%s) failed: %s\n",
00529 action == ACTION_COPY ? "copy" : "rename",
00530 fn, nfn, strerror(errno));
00531 ast_free(nfn);
00532 }
00533 }
00534 break;
00535
00536 default:
00537 ast_log(LOG_WARNING, "Unknown helper %d\n", action);
00538 }
00539 ast_free(fn);
00540 }
00541 }
00542 AST_RWLIST_UNLOCK(&formats);
00543 return res;
00544 }
00545
00546 static int is_absolute_path(const char *filename)
00547 {
00548 return filename[0] == '/';
00549 }
00550
00551 static format_t fileexists_test(const char *filename, const char *fmt, const char *lang,
00552 char *buf, int buflen)
00553 {
00554 if (buf == NULL) {
00555 return -1;
00556 }
00557
00558 if (ast_language_is_prefix && !is_absolute_path(filename)) {
00559 if (lang) {
00560 snprintf(buf, buflen, "%s/%s", lang, filename);
00561 } else {
00562 snprintf(buf, buflen, "%s", filename);
00563 }
00564 } else {
00565 strcpy(buf, filename);
00566 if (lang) {
00567
00568 const char *c = strrchr(filename, '/');
00569 int offset = c ? c - filename + 1 : 0;
00570 snprintf(buf + offset, buflen - offset, "%s/%s", lang, filename + offset);
00571 }
00572 }
00573
00574 return ast_filehelper(buf, NULL, fmt, ACTION_EXISTS);
00575 }
00576
00577
00578
00579
00580
00581
00582
00583
00584
00585 static format_t fileexists_core(const char *filename, const char *fmt, const char *preflang,
00586 char *buf, int buflen)
00587 {
00588 format_t res = -1;
00589 char *lang;
00590
00591 if (buf == NULL) {
00592 return -1;
00593 }
00594
00595
00596
00597
00598
00599
00600
00601
00602 lang = ast_strdupa(preflang);
00603
00604
00605 while (!ast_strlen_zero(lang)) {
00606 char *end;
00607
00608 if ((res = fileexists_test(filename, fmt, lang, buf, buflen)) > 0) {
00609 return res;
00610 }
00611
00612 if ((end = strrchr(lang, '_')) != NULL) {
00613 *end = '\0';
00614 continue;
00615 }
00616
00617 break;
00618 }
00619
00620
00621 if ((res = fileexists_test(filename, fmt, NULL, buf, buflen)) > 0) {
00622 return res;
00623 }
00624
00625
00626 if ((ast_strlen_zero(preflang) || strcmp(preflang, DEFAULT_LANGUAGE)) && (ast_strlen_zero(lang) || strcmp(lang, DEFAULT_LANGUAGE))) {
00627 if ((res = fileexists_test(filename, fmt, DEFAULT_LANGUAGE, buf, buflen)) > 0) {
00628 return res;
00629 }
00630 }
00631
00632 return 0;
00633 }
00634
00635 struct ast_filestream *ast_openstream(struct ast_channel *chan, const char *filename, const char *preflang)
00636 {
00637 return ast_openstream_full(chan, filename, preflang, 0);
00638 }
00639
00640 struct ast_filestream *ast_openstream_full(struct ast_channel *chan, const char *filename, const char *preflang, int asis)
00641 {
00642
00643
00644
00645
00646
00647 format_t fmts, res;
00648 int buflen;
00649 char *buf;
00650
00651 if (!asis) {
00652
00653 ast_stopstream(chan);
00654 if (chan->generator)
00655 ast_deactivate_generator(chan);
00656 }
00657 if (preflang == NULL)
00658 preflang = "";
00659 buflen = strlen(preflang) + strlen(filename) + 4;
00660 buf = alloca(buflen);
00661 if (buf == NULL)
00662 return NULL;
00663 fmts = fileexists_core(filename, NULL, preflang, buf, buflen);
00664 if (fmts > 0)
00665 fmts &= AST_FORMAT_AUDIO_MASK;
00666 if (fmts < 1) {
00667 ast_log(LOG_WARNING, "File %s does not exist in any format\n", filename);
00668 return NULL;
00669 }
00670 chan->oldwriteformat = chan->writeformat;
00671
00672 res = ast_set_write_format(chan, fmts);
00673 if (res == -1) {
00674 return NULL;
00675 }
00676 res = ast_filehelper(buf, chan, NULL, ACTION_OPEN);
00677 if (res >= 0)
00678 return chan->stream;
00679 return NULL;
00680 }
00681
00682 struct ast_filestream *ast_openvstream(struct ast_channel *chan, const char *filename, const char *preflang)
00683 {
00684
00685
00686
00687 format_t format;
00688 char *buf;
00689 int buflen;
00690
00691 if (preflang == NULL)
00692 preflang = "";
00693 buflen = strlen(preflang) + strlen(filename) + 4;
00694 buf = alloca(buflen);
00695 if (buf == NULL)
00696 return NULL;
00697
00698 for (format = AST_FORMAT_FIRST_VIDEO_BIT; format <= AST_FORMAT_VIDEO_MASK; format = format << 1) {
00699 int fd;
00700 const char *fmt;
00701
00702 if (!(chan->nativeformats & format))
00703 continue;
00704 fmt = ast_getformatname(format);
00705 if ( fileexists_core(filename, fmt, preflang, buf, buflen) < 1)
00706 continue;
00707 fd = ast_filehelper(buf, chan, fmt, ACTION_OPEN);
00708 if (fd >= 0)
00709 return chan->vstream;
00710 ast_log(LOG_WARNING, "File %s has video but couldn't be opened\n", filename);
00711 }
00712 return NULL;
00713 }
00714
00715 static struct ast_frame *read_frame(struct ast_filestream *s, int *whennext)
00716 {
00717 struct ast_frame *fr, *new_fr;
00718
00719 if (!s || !s->fmt) {
00720 return NULL;
00721 }
00722
00723 if (!(fr = s->fmt->read(s, whennext))) {
00724 return NULL;
00725 }
00726
00727 if (!(new_fr = ast_frisolate(fr))) {
00728 ast_frfree(fr);
00729 return NULL;
00730 }
00731
00732 if (new_fr != fr) {
00733 ast_frfree(fr);
00734 fr = new_fr;
00735 }
00736
00737 return fr;
00738 }
00739
00740 struct ast_frame *ast_readframe(struct ast_filestream *s)
00741 {
00742 int whennext = 0;
00743
00744 return read_frame(s, &whennext);
00745 }
00746
00747 enum fsread_res {
00748 FSREAD_FAILURE,
00749 FSREAD_SUCCESS_SCHED,
00750 FSREAD_SUCCESS_NOSCHED,
00751 };
00752
00753 static int ast_fsread_audio(const void *data);
00754
00755 static enum fsread_res ast_readaudio_callback(struct ast_filestream *s)
00756 {
00757 int whennext = 0;
00758
00759 while (!whennext) {
00760 struct ast_frame *fr;
00761
00762 if (s->orig_chan_name && strcasecmp(s->owner->name, s->orig_chan_name)) {
00763 goto return_failure;
00764 }
00765
00766 fr = read_frame(s, &whennext);
00767
00768 if (!fr || ast_write(s->owner, fr) ) {
00769 if (fr) {
00770 ast_log(LOG_WARNING, "Failed to write frame\n");
00771 ast_frfree(fr);
00772 }
00773 goto return_failure;
00774 }
00775
00776 if (fr) {
00777 ast_frfree(fr);
00778 }
00779 }
00780
00781 if (whennext != s->lasttimeout) {
00782 if (s->owner->timingfd > -1) {
00783 float samp_rate = (float) ast_format_rate(s->fmt->format);
00784 unsigned int rate;
00785
00786 rate = (unsigned int) roundf(samp_rate / ((float) whennext));
00787
00788 ast_settimeout(s->owner, rate, ast_fsread_audio, s);
00789 } else {
00790 s->owner->streamid = ast_sched_add(s->owner->sched,
00791 whennext / (ast_format_rate(s->fmt->format) / 1000), ast_fsread_audio, s);
00792 }
00793 s->lasttimeout = whennext;
00794 return FSREAD_SUCCESS_NOSCHED;
00795 }
00796 return FSREAD_SUCCESS_SCHED;
00797
00798 return_failure:
00799 s->owner->streamid = -1;
00800 ast_settimeout(s->owner, 0, NULL, NULL);
00801 return FSREAD_FAILURE;
00802 }
00803
00804 static int ast_fsread_audio(const void *data)
00805 {
00806 struct ast_filestream *fs = (struct ast_filestream *)data;
00807 enum fsread_res res;
00808
00809 res = ast_readaudio_callback(fs);
00810
00811 if (res == FSREAD_SUCCESS_SCHED)
00812 return 1;
00813
00814 return 0;
00815 }
00816
00817 static int ast_fsread_video(const void *data);
00818
00819 static enum fsread_res ast_readvideo_callback(struct ast_filestream *s)
00820 {
00821 int whennext = 0;
00822
00823 while (!whennext) {
00824 struct ast_frame *fr = read_frame(s, &whennext);
00825
00826 if (!fr || ast_write(s->owner, fr) ) {
00827 if (fr) {
00828 ast_log(LOG_WARNING, "Failed to write frame\n");
00829 ast_frfree(fr);
00830 }
00831 s->owner->vstreamid = -1;
00832 return FSREAD_FAILURE;
00833 }
00834
00835 if (fr) {
00836 ast_frfree(fr);
00837 }
00838 }
00839
00840 if (whennext != s->lasttimeout) {
00841 s->owner->vstreamid = ast_sched_add(s->owner->sched,
00842 whennext / (ast_format_rate(s->fmt->format) / 1000),
00843 ast_fsread_video, s);
00844 s->lasttimeout = whennext;
00845 return FSREAD_SUCCESS_NOSCHED;
00846 }
00847
00848 return FSREAD_SUCCESS_SCHED;
00849 }
00850
00851 static int ast_fsread_video(const void *data)
00852 {
00853 struct ast_filestream *fs = (struct ast_filestream *)data;
00854 enum fsread_res res;
00855
00856 res = ast_readvideo_callback(fs);
00857
00858 if (res == FSREAD_SUCCESS_SCHED)
00859 return 1;
00860
00861 return 0;
00862 }
00863
00864 int ast_applystream(struct ast_channel *chan, struct ast_filestream *s)
00865 {
00866 s->owner = chan;
00867 return 0;
00868 }
00869
00870 int ast_playstream(struct ast_filestream *s)
00871 {
00872 enum fsread_res res;
00873
00874 if (s->fmt->format & AST_FORMAT_AUDIO_MASK)
00875 res = ast_readaudio_callback(s);
00876 else
00877 res = ast_readvideo_callback(s);
00878
00879 return (res == FSREAD_FAILURE) ? -1 : 0;
00880 }
00881
00882 int ast_seekstream(struct ast_filestream *fs, off_t sample_offset, int whence)
00883 {
00884 return fs->fmt->seek(fs, sample_offset, whence);
00885 }
00886
00887 int ast_truncstream(struct ast_filestream *fs)
00888 {
00889 return fs->fmt->trunc(fs);
00890 }
00891
00892 off_t ast_tellstream(struct ast_filestream *fs)
00893 {
00894 return fs->fmt->tell(fs);
00895 }
00896
00897 int ast_stream_fastforward(struct ast_filestream *fs, off_t ms)
00898 {
00899 return ast_seekstream(fs, ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
00900 }
00901
00902 int ast_stream_rewind(struct ast_filestream *fs, off_t ms)
00903 {
00904 return ast_seekstream(fs, -ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
00905 }
00906
00907 int ast_closestream(struct ast_filestream *f)
00908 {
00909
00910
00911
00912
00913 filestream_close(f);
00914 ao2_ref(f, -1);
00915 return 0;
00916 }
00917
00918
00919
00920
00921
00922 int ast_fileexists(const char *filename, const char *fmt, const char *preflang)
00923 {
00924 char *buf;
00925 int buflen;
00926
00927 if (preflang == NULL)
00928 preflang = "";
00929 buflen = strlen(preflang) + strlen(filename) + 4;
00930 buf = alloca(buflen);
00931 if (buf == NULL)
00932 return 0;
00933 return fileexists_core(filename, fmt, preflang, buf, buflen);
00934 }
00935
00936 int ast_filedelete(const char *filename, const char *fmt)
00937 {
00938 return ast_filehelper(filename, NULL, fmt, ACTION_DELETE);
00939 }
00940
00941 int ast_filerename(const char *filename, const char *filename2, const char *fmt)
00942 {
00943 return ast_filehelper(filename, filename2, fmt, ACTION_RENAME);
00944 }
00945
00946 int ast_filecopy(const char *filename, const char *filename2, const char *fmt)
00947 {
00948 return ast_filehelper(filename, filename2, fmt, ACTION_COPY);
00949 }
00950
00951 int ast_streamfile(struct ast_channel *chan, const char *filename, const char *preflang)
00952 {
00953 struct ast_filestream *fs;
00954 struct ast_filestream *vfs=NULL;
00955 char fmt[256];
00956 off_t pos;
00957 int seekattempt;
00958 int res;
00959
00960 fs = ast_openstream(chan, filename, preflang);
00961 if (!fs) {
00962 ast_log(LOG_WARNING, "Unable to open %s (format %s): %s\n", filename, ast_getformatname_multiple(fmt, sizeof(fmt), chan->nativeformats), strerror(errno));
00963 return -1;
00964 }
00965
00966
00967
00968
00969 pos = ftello(fs->f);
00970 seekattempt = fseeko(fs->f, -1, SEEK_END);
00971 if (seekattempt) {
00972 if (errno == EINVAL) {
00973
00974 return 0;
00975 } else {
00976 ast_seekstream(fs, 0, SEEK_SET);
00977 }
00978 } else {
00979 fseeko(fs->f, pos, SEEK_SET);
00980 }
00981
00982 vfs = ast_openvstream(chan, filename, preflang);
00983 if (vfs) {
00984 ast_debug(1, "Ooh, found a video stream, too, format %s\n", ast_getformatname(vfs->fmt->format));
00985 }
00986
00987 if (ast_test_flag(chan, AST_FLAG_MASQ_NOSTREAM))
00988 fs->orig_chan_name = ast_strdup(chan->name);
00989 if (ast_applystream(chan, fs))
00990 return -1;
00991 if (vfs && ast_applystream(chan, vfs))
00992 return -1;
00993 res = ast_playstream(fs);
00994 if (!res && vfs)
00995 res = ast_playstream(vfs);
00996 ast_verb(3, "<%s> Playing '%s.%s' (language '%s')\n", chan->name, filename, ast_getformatname(chan->writeformat), preflang ? preflang : "default");
00997
00998 return res;
00999 }
01000
01001 struct ast_filestream *ast_readfile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
01002 {
01003 FILE *bfile;
01004 struct ast_format *f;
01005 struct ast_filestream *fs = NULL;
01006 char *fn;
01007 int format_found = 0;
01008
01009 AST_RWLIST_RDLOCK(&formats);
01010
01011 AST_RWLIST_TRAVERSE(&formats, f, list) {
01012 fs = NULL;
01013 if (!exts_compare(f->exts, type))
01014 continue;
01015 else
01016 format_found = 1;
01017
01018 fn = build_filename(filename, type);
01019 errno = 0;
01020 bfile = fopen(fn, "r");
01021
01022 if (!bfile || (fs = get_filestream(f, bfile)) == NULL || open_wrapper(fs) ) {
01023 ast_log(LOG_WARNING, "Unable to open %s\n", fn);
01024 if (fs) {
01025 ast_closestream(fs);
01026 }
01027 fs = NULL;
01028 bfile = NULL;
01029 ast_free(fn);
01030 break;
01031 }
01032
01033 fs->trans = NULL;
01034 fs->fmt = f;
01035 fs->flags = flags;
01036 fs->mode = mode;
01037 fs->filename = ast_strdup(filename);
01038 fs->vfs = NULL;
01039 break;
01040 }
01041
01042 AST_RWLIST_UNLOCK(&formats);
01043 if (!format_found)
01044 ast_log(LOG_WARNING, "No such format '%s'\n", type);
01045
01046 return fs;
01047 }
01048
01049 struct ast_filestream *ast_writefile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
01050 {
01051 int fd, myflags = 0;
01052
01053 FILE *bfile = NULL;
01054 struct ast_format *f;
01055 struct ast_filestream *fs = NULL;
01056 char *buf = NULL;
01057 size_t size = 0;
01058 int format_found = 0;
01059
01060 AST_RWLIST_RDLOCK(&formats);
01061
01062
01063
01064 if (flags & O_APPEND) {
01065 flags &= ~O_APPEND;
01066 } else {
01067 myflags = O_TRUNC;
01068 }
01069
01070 myflags |= O_WRONLY | O_CREAT;
01071
01072
01073
01074
01075 AST_RWLIST_TRAVERSE(&formats, f, list) {
01076 char *fn, *orig_fn = NULL;
01077 if (fs)
01078 break;
01079
01080 if (!exts_compare(f->exts, type))
01081 continue;
01082 else
01083 format_found = 1;
01084
01085 fn = build_filename(filename, type);
01086 fd = open(fn, flags | myflags, mode);
01087 if (fd > -1) {
01088
01089 bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
01090 if (!bfile) {
01091 ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
01092 close(fd);
01093 fd = -1;
01094 }
01095 }
01096
01097 if (ast_opt_cache_record_files && (fd > -1)) {
01098 char *c;
01099
01100 fclose(bfile);
01101
01102
01103
01104
01105 orig_fn = ast_strdupa(fn);
01106 for (c = fn; *c; c++)
01107 if (*c == '/')
01108 *c = '_';
01109
01110 size = strlen(fn) + strlen(record_cache_dir) + 2;
01111 buf = alloca(size);
01112 strcpy(buf, record_cache_dir);
01113 strcat(buf, "/");
01114 strcat(buf, fn);
01115 ast_free(fn);
01116 fn = buf;
01117 fd = open(fn, flags | myflags, mode);
01118 if (fd > -1) {
01119
01120 bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
01121 if (!bfile) {
01122 ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
01123 close(fd);
01124 fd = -1;
01125 }
01126 }
01127 }
01128 if (fd > -1) {
01129 errno = 0;
01130 fs = get_filestream(f, bfile);
01131 if (fs) {
01132 if ((fs->write_buffer = ast_malloc(32768))) {
01133 setvbuf(fs->f, fs->write_buffer, _IOFBF, 32768);
01134 }
01135 }
01136 if (!fs || rewrite_wrapper(fs, comment)) {
01137 ast_log(LOG_WARNING, "Unable to rewrite %s\n", fn);
01138 close(fd);
01139 if (orig_fn) {
01140 unlink(fn);
01141 unlink(orig_fn);
01142 }
01143 if (fs) {
01144 ast_closestream(fs);
01145 fs = NULL;
01146 }
01147 continue;
01148 }
01149 fs->trans = NULL;
01150 fs->fmt = f;
01151 fs->flags = flags;
01152 fs->mode = mode;
01153 if (orig_fn) {
01154 fs->realfilename = ast_strdup(orig_fn);
01155 fs->filename = ast_strdup(fn);
01156 } else {
01157 fs->realfilename = NULL;
01158 fs->filename = ast_strdup(filename);
01159 }
01160 fs->vfs = NULL;
01161
01162 f->seek(fs, 0, SEEK_END);
01163 } else if (errno != EEXIST) {
01164 ast_log(LOG_WARNING, "Unable to open file %s: %s\n", fn, strerror(errno));
01165 if (orig_fn)
01166 unlink(orig_fn);
01167 }
01168
01169 if (!buf)
01170 ast_free(fn);
01171 }
01172
01173 AST_RWLIST_UNLOCK(&formats);
01174
01175 if (!format_found)
01176 ast_log(LOG_WARNING, "No such format '%s'\n", type);
01177
01178 return fs;
01179 }
01180
01181
01182
01183
01184 static int waitstream_core(struct ast_channel *c, const char *breakon,
01185 const char *forward, const char *reverse, int skip_ms,
01186 int audiofd, int cmdfd, const char *context)
01187 {
01188 const char *orig_chan_name = NULL;
01189 int err = 0;
01190
01191 if (!breakon)
01192 breakon = "";
01193 if (!forward)
01194 forward = "";
01195 if (!reverse)
01196 reverse = "";
01197
01198
01199 ast_set_flag(c, AST_FLAG_END_DTMF_ONLY);
01200
01201 if (ast_test_flag(c, AST_FLAG_MASQ_NOSTREAM))
01202 orig_chan_name = ast_strdupa(c->name);
01203
01204 while (c->stream) {
01205 int res;
01206 int ms;
01207
01208 if (orig_chan_name && strcasecmp(orig_chan_name, c->name)) {
01209 ast_stopstream(c);
01210 err = 1;
01211 break;
01212 }
01213
01214 ms = ast_sched_wait(c->sched);
01215
01216 if (ms < 0 && !c->timingfunc) {
01217 ast_stopstream(c);
01218 break;
01219 }
01220 if (ms < 0)
01221 ms = 1000;
01222 if (cmdfd < 0) {
01223 res = ast_waitfor(c, ms);
01224 if (res < 0) {
01225 ast_log(LOG_WARNING, "Select failed (%s)\n", strerror(errno));
01226 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01227 return res;
01228 }
01229 } else {
01230 int outfd;
01231 struct ast_channel *rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms);
01232 if (!rchan && (outfd < 0) && (ms)) {
01233
01234 if (errno == EINTR)
01235 continue;
01236 ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno));
01237 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01238 return -1;
01239 } else if (outfd > -1) {
01240
01241 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01242 return 1;
01243 }
01244
01245 res = rchan ? 1 : 0;
01246 }
01247 if (res > 0) {
01248 struct ast_frame *fr = ast_read(c);
01249 if (!fr) {
01250 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01251 return -1;
01252 }
01253 switch (fr->frametype) {
01254 case AST_FRAME_DTMF_END:
01255 if (context) {
01256 const char exten[2] = { fr->subclass.integer, '\0' };
01257 if (ast_exists_extension(c, context, exten, 1,
01258 S_COR(c->caller.id.number.valid, c->caller.id.number.str, NULL))) {
01259 res = fr->subclass.integer;
01260 ast_frfree(fr);
01261 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01262 return res;
01263 }
01264 } else {
01265 res = fr->subclass.integer;
01266 if (strchr(forward, res)) {
01267 int eoftest;
01268 ast_stream_fastforward(c->stream, skip_ms);
01269 eoftest = fgetc(c->stream->f);
01270 if (feof(c->stream->f)) {
01271 ast_stream_rewind(c->stream, skip_ms);
01272 } else {
01273 ungetc(eoftest, c->stream->f);
01274 }
01275 } else if (strchr(reverse, res)) {
01276 ast_stream_rewind(c->stream, skip_ms);
01277 } else if (strchr(breakon, res)) {
01278 ast_frfree(fr);
01279 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01280 return res;
01281 }
01282 }
01283 break;
01284 case AST_FRAME_CONTROL:
01285 switch (fr->subclass.integer) {
01286 case AST_CONTROL_HANGUP:
01287 case AST_CONTROL_BUSY:
01288 case AST_CONTROL_CONGESTION:
01289 ast_frfree(fr);
01290 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01291 return -1;
01292 case AST_CONTROL_RINGING:
01293 case AST_CONTROL_ANSWER:
01294 case AST_CONTROL_VIDUPDATE:
01295 case AST_CONTROL_SRCUPDATE:
01296 case AST_CONTROL_SRCCHANGE:
01297 case AST_CONTROL_HOLD:
01298 case AST_CONTROL_UNHOLD:
01299 case AST_CONTROL_CONNECTED_LINE:
01300 case AST_CONTROL_REDIRECTING:
01301 case AST_CONTROL_AOC:
01302 case AST_CONTROL_UPDATE_RTP_PEER:
01303 case -1:
01304
01305 break;
01306 default:
01307 ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", fr->subclass.integer);
01308 }
01309 break;
01310 case AST_FRAME_VOICE:
01311
01312 if (audiofd > -1) {
01313 if (write(audiofd, fr->data.ptr, fr->datalen) < 0) {
01314 ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno));
01315 }
01316 }
01317 default:
01318
01319 break;
01320 }
01321 ast_frfree(fr);
01322 }
01323 ast_sched_runq(c->sched);
01324 }
01325
01326 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01327
01328 return (err || c->_softhangup) ? -1 : 0;
01329 }
01330
01331 int ast_waitstream_fr(struct ast_channel *c, const char *breakon, const char *forward, const char *reverse, int ms)
01332 {
01333 return waitstream_core(c, breakon, forward, reverse, ms,
01334 -1 , -1 , NULL );
01335 }
01336
01337 int ast_waitstream(struct ast_channel *c, const char *breakon)
01338 {
01339 return waitstream_core(c, breakon, NULL, NULL, 0, -1, -1, NULL);
01340 }
01341
01342 int ast_waitstream_full(struct ast_channel *c, const char *breakon, int audiofd, int cmdfd)
01343 {
01344 return waitstream_core(c, breakon, NULL, NULL, 0,
01345 audiofd, cmdfd, NULL );
01346 }
01347
01348 int ast_waitstream_exten(struct ast_channel *c, const char *context)
01349 {
01350
01351
01352
01353 if (!context)
01354 context = c->context;
01355 return waitstream_core(c, NULL, NULL, NULL, 0,
01356 -1, -1, context);
01357 }
01358
01359
01360
01361
01362
01363
01364 int ast_stream_and_wait(struct ast_channel *chan, const char *file, const char *digits)
01365 {
01366 int res = 0;
01367 if (!ast_strlen_zero(file)) {
01368 ast_test_suite_event_notify("PLAYBACK", "Message: %s", file);
01369 res = ast_streamfile(chan, file, chan->language);
01370 if (!res) {
01371 res = ast_waitstream(chan, digits);
01372 }
01373 }
01374 return res;
01375 }
01376
01377 char *ast_format_str_reduce(char *fmts)
01378 {
01379 struct ast_format *f;
01380 struct ast_format *fmts_ptr[AST_MAX_FORMATS];
01381 char *fmts_str[AST_MAX_FORMATS];
01382 char *stringp, *type;
01383 char *orig = fmts;
01384 int i, j, x, first, found = 0;
01385 int len = strlen(fmts) + 1;
01386 int res;
01387
01388 if (AST_RWLIST_RDLOCK(&formats)) {
01389 ast_log(LOG_WARNING, "Unable to lock format list\n");
01390 return NULL;
01391 }
01392
01393 stringp = ast_strdupa(fmts);
01394
01395 for (x = 0; (type = strsep(&stringp, "|")) && x < AST_MAX_FORMATS; x++) {
01396 AST_RWLIST_TRAVERSE(&formats, f, list) {
01397 if (exts_compare(f->exts, type)) {
01398 found = 1;
01399 break;
01400 }
01401 }
01402
01403 fmts_str[x] = type;
01404 if (found) {
01405 fmts_ptr[x] = f;
01406 } else {
01407 fmts_ptr[x] = NULL;
01408 }
01409 }
01410 AST_RWLIST_UNLOCK(&formats);
01411
01412 first = 1;
01413 for (i = 0; i < x; i++) {
01414
01415 if (!fmts_ptr[i]) {
01416 ast_log(LOG_WARNING, "ignoring unknown format '%s'\n", fmts_str[i]);
01417 continue;
01418 }
01419
01420
01421 if (first) {
01422 res = snprintf(fmts, len, "%s", fmts_str[i]);
01423 fmts += res;
01424 len -= res;
01425 first = 0;
01426 continue;
01427 }
01428
01429 found = 0;
01430 for (j = 0; j < i; j++) {
01431
01432 if (fmts_ptr[j] == fmts_ptr[i]) {
01433 found = 1;
01434 break;
01435 }
01436 }
01437
01438 if (!found) {
01439 res = snprintf(fmts, len, "|%s", fmts_str[i]);
01440 fmts += res;
01441 len -= res;
01442 }
01443 }
01444
01445 if (first) {
01446 ast_log(LOG_WARNING, "no known formats found in format list (%s)\n", orig);
01447 return NULL;
01448 }
01449
01450 return orig;
01451 }
01452
01453 static char *handle_cli_core_show_file_formats(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
01454 {
01455 #define FORMAT "%-10s %-10s %-20s\n"
01456 #define FORMAT2 "%-10s %-10s %-20s\n"
01457 struct ast_format *f;
01458 int count_fmt = 0;
01459
01460 switch (cmd) {
01461 case CLI_INIT:
01462 e->command = "core show file formats";
01463 e->usage =
01464 "Usage: core show file formats\n"
01465 " Displays currently registered file formats (if any).\n";
01466 return NULL;
01467 case CLI_GENERATE:
01468 return NULL;
01469 }
01470
01471 if (a->argc != 4)
01472 return CLI_SHOWUSAGE;
01473
01474 ast_cli(a->fd, FORMAT, "Format", "Name", "Extensions");
01475 ast_cli(a->fd, FORMAT, "------", "----", "----------");
01476
01477 AST_RWLIST_RDLOCK(&formats);
01478 AST_RWLIST_TRAVERSE(&formats, f, list) {
01479 ast_cli(a->fd, FORMAT2, ast_getformatname(f->format), f->name, f->exts);
01480 count_fmt++;
01481 }
01482 AST_RWLIST_UNLOCK(&formats);
01483 ast_cli(a->fd, "%d file formats registered.\n", count_fmt);
01484 return CLI_SUCCESS;
01485 #undef FORMAT
01486 #undef FORMAT2
01487 }
01488
01489 static struct ast_cli_entry cli_file[] = {
01490 AST_CLI_DEFINE(handle_cli_core_show_file_formats, "Displays file formats")
01491 };
01492
01493 int ast_file_init(void)
01494 {
01495 ast_cli_register_multiple(cli_file, ARRAY_LEN(cli_file));
01496 return 0;
01497 }