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00026 #include "asterisk.h"
00027
00028 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 254486 $")
00029
00030 #include <dirent.h>
00031 #include <sys/stat.h>
00032 #include <math.h>
00033
00034 #include "asterisk/_private.h"
00035 #include "asterisk/paths.h"
00036 #include "asterisk/mod_format.h"
00037 #include "asterisk/cli.h"
00038 #include "asterisk/channel.h"
00039 #include "asterisk/sched.h"
00040 #include "asterisk/translate.h"
00041 #include "asterisk/utils.h"
00042 #include "asterisk/lock.h"
00043 #include "asterisk/app.h"
00044 #include "asterisk/pbx.h"
00045 #include "asterisk/linkedlists.h"
00046 #include "asterisk/module.h"
00047 #include "asterisk/astobj2.h"
00048
00049
00050
00051
00052
00053
00054
00055
00056
00057 int ast_language_is_prefix = 1;
00058
00059 static AST_RWLIST_HEAD_STATIC(formats, ast_format);
00060
00061 int __ast_format_register(const struct ast_format *f, struct ast_module *mod)
00062 {
00063 struct ast_format *tmp;
00064
00065 AST_RWLIST_WRLOCK(&formats);
00066 AST_RWLIST_TRAVERSE(&formats, tmp, list) {
00067 if (!strcasecmp(f->name, tmp->name)) {
00068 AST_RWLIST_UNLOCK(&formats);
00069 ast_log(LOG_WARNING, "Tried to register '%s' format, already registered\n", f->name);
00070 return -1;
00071 }
00072 }
00073 if (!(tmp = ast_calloc(1, sizeof(*tmp)))) {
00074 AST_RWLIST_UNLOCK(&formats);
00075 return -1;
00076 }
00077 *tmp = *f;
00078 tmp->module = mod;
00079 if (tmp->buf_size) {
00080
00081
00082
00083
00084 struct _test_align { void *a, *b; } p;
00085 int align = (char *)&p.b - (char *)&p.a;
00086 tmp->buf_size = ((f->buf_size + align - 1) / align) * align;
00087 }
00088
00089 memset(&tmp->list, 0, sizeof(tmp->list));
00090
00091 AST_RWLIST_INSERT_HEAD(&formats, tmp, list);
00092 AST_RWLIST_UNLOCK(&formats);
00093 ast_verb(2, "Registered file format %s, extension(s) %s\n", f->name, f->exts);
00094
00095 return 0;
00096 }
00097
00098 int ast_format_unregister(const char *name)
00099 {
00100 struct ast_format *tmp;
00101 int res = -1;
00102
00103 AST_RWLIST_WRLOCK(&formats);
00104 AST_RWLIST_TRAVERSE_SAFE_BEGIN(&formats, tmp, list) {
00105 if (!strcasecmp(name, tmp->name)) {
00106 AST_RWLIST_REMOVE_CURRENT(list);
00107 ast_free(tmp);
00108 res = 0;
00109 }
00110 }
00111 AST_RWLIST_TRAVERSE_SAFE_END;
00112 AST_RWLIST_UNLOCK(&formats);
00113
00114 if (!res)
00115 ast_verb(2, "Unregistered format %s\n", name);
00116 else
00117 ast_log(LOG_WARNING, "Tried to unregister format %s, already unregistered\n", name);
00118
00119 return res;
00120 }
00121
00122 int ast_stopstream(struct ast_channel *tmp)
00123 {
00124 ast_channel_lock(tmp);
00125
00126
00127 if (tmp->stream) {
00128 ast_closestream(tmp->stream);
00129 tmp->stream = NULL;
00130 if (tmp->oldwriteformat && ast_set_write_format(tmp, tmp->oldwriteformat))
00131 ast_log(LOG_WARNING, "Unable to restore format back to %d\n", tmp->oldwriteformat);
00132 }
00133
00134 if (tmp->vstream != NULL) {
00135 ast_closestream(tmp->vstream);
00136 tmp->vstream = NULL;
00137 }
00138
00139 ast_channel_unlock(tmp);
00140
00141 return 0;
00142 }
00143
00144 int ast_writestream(struct ast_filestream *fs, struct ast_frame *f)
00145 {
00146 int res = -1;
00147 int alt = 0;
00148 if (f->frametype == AST_FRAME_VIDEO) {
00149 if (fs->fmt->format & AST_FORMAT_AUDIO_MASK) {
00150
00151 if (!fs->vfs && fs->filename) {
00152 const char *type = ast_getformatname(f->subclass & ~0x1);
00153 fs->vfs = ast_writefile(fs->filename, type, NULL, fs->flags, 0, fs->mode);
00154 ast_debug(1, "Opened video output file\n");
00155 }
00156 if (fs->vfs)
00157 return ast_writestream(fs->vfs, f);
00158
00159 return 0;
00160 } else {
00161
00162 alt = 1;
00163 }
00164 } else if (f->frametype != AST_FRAME_VOICE) {
00165 ast_log(LOG_WARNING, "Tried to write non-voice frame\n");
00166 return -1;
00167 }
00168 if (((fs->fmt->format | alt) & f->subclass) == f->subclass) {
00169 res = fs->fmt->write(fs, f);
00170 if (res < 0)
00171 ast_log(LOG_WARNING, "Natural write failed\n");
00172 else if (res > 0)
00173 ast_log(LOG_WARNING, "Huh??\n");
00174 } else {
00175
00176
00177 if (fs->trans && f->subclass != fs->lastwriteformat) {
00178 ast_translator_free_path(fs->trans);
00179 fs->trans = NULL;
00180 }
00181 if (!fs->trans)
00182 fs->trans = ast_translator_build_path(fs->fmt->format, f->subclass);
00183 if (!fs->trans)
00184 ast_log(LOG_WARNING, "Unable to translate to format %s, source format %s\n",
00185 fs->fmt->name, ast_getformatname(f->subclass));
00186 else {
00187 struct ast_frame *trf;
00188 fs->lastwriteformat = f->subclass;
00189
00190 if ((trf = ast_translate(fs->trans, f, 0))) {
00191 struct ast_frame *cur;
00192
00193
00194 for (cur = trf; cur; cur = AST_LIST_NEXT(cur, frame_list)) {
00195 if ((res = fs->fmt->write(fs, trf))) {
00196 ast_log(LOG_WARNING, "Translated frame write failed\n");
00197 break;
00198 }
00199 }
00200 ast_frfree(trf);
00201 } else {
00202 res = 0;
00203 }
00204 }
00205 }
00206 return res;
00207 }
00208
00209 static int copy(const char *infile, const char *outfile)
00210 {
00211 int ifd, ofd, len;
00212 char buf[4096];
00213
00214 if ((ifd = open(infile, O_RDONLY)) < 0) {
00215 ast_log(LOG_WARNING, "Unable to open %s in read-only mode\n", infile);
00216 return -1;
00217 }
00218 if ((ofd = open(outfile, O_WRONLY | O_TRUNC | O_CREAT, AST_FILE_MODE)) < 0) {
00219 ast_log(LOG_WARNING, "Unable to open %s in write-only mode\n", outfile);
00220 close(ifd);
00221 return -1;
00222 }
00223 while ( (len = read(ifd, buf, sizeof(buf)) ) ) {
00224 int res;
00225 if (len < 0) {
00226 ast_log(LOG_WARNING, "Read failed on %s: %s\n", infile, strerror(errno));
00227 break;
00228 }
00229
00230 res = write(ofd, buf, len);
00231 if (res != len) {
00232 ast_log(LOG_WARNING, "Write failed on %s (%d of %d): %s\n", outfile, res, len, strerror(errno));
00233 len = -1;
00234 break;
00235 }
00236 }
00237 close(ifd);
00238 close(ofd);
00239 if (len < 0) {
00240 unlink(outfile);
00241 return -1;
00242 }
00243 return 0;
00244 }
00245
00246
00247
00248
00249
00250
00251
00252 static char *build_filename(const char *filename, const char *ext)
00253 {
00254 char *fn = NULL;
00255
00256 if (!strcmp(ext, "wav49"))
00257 ext = "WAV";
00258
00259 if (filename[0] == '/') {
00260 if (asprintf(&fn, "%s.%s", filename, ext) < 0) {
00261 ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
00262 fn = NULL;
00263 }
00264 } else {
00265 if (asprintf(&fn, "%s/sounds/%s.%s",
00266 ast_config_AST_DATA_DIR, filename, ext) < 0) {
00267 ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
00268 fn = NULL;
00269 }
00270 }
00271 return fn;
00272 }
00273
00274
00275
00276 static int exts_compare(const char *exts, const char *type)
00277 {
00278 char tmp[256];
00279 char *stringp = tmp, *ext;
00280
00281 ast_copy_string(tmp, exts, sizeof(tmp));
00282 while ((ext = strsep(&stringp, "|"))) {
00283 if (!strcmp(ext, type))
00284 return 1;
00285 }
00286
00287 return 0;
00288 }
00289
00290 static void filestream_destructor(void *arg)
00291 {
00292 char *cmd = NULL;
00293 size_t size = 0;
00294 struct ast_filestream *f = arg;
00295
00296
00297 if (f->owner) {
00298 if (f->fmt->format < AST_FORMAT_AUDIO_MASK) {
00299 f->owner->stream = NULL;
00300 AST_SCHED_DEL(f->owner->sched, f->owner->streamid);
00301 ast_settimeout(f->owner, 0, NULL, NULL);
00302 } else {
00303 f->owner->vstream = NULL;
00304 AST_SCHED_DEL(f->owner->sched, f->owner->vstreamid);
00305 }
00306 }
00307
00308 if (f->trans)
00309 ast_translator_free_path(f->trans);
00310
00311 if (f->realfilename && f->filename) {
00312 size = strlen(f->filename) + strlen(f->realfilename) + 15;
00313 cmd = alloca(size);
00314 memset(cmd,0,size);
00315 snprintf(cmd,size,"/bin/mv -f %s %s",f->filename,f->realfilename);
00316 ast_safe_system(cmd);
00317 }
00318
00319 if (f->filename)
00320 free(f->filename);
00321 if (f->realfilename)
00322 free(f->realfilename);
00323 if (f->fmt->close) {
00324 void (*closefn)(struct ast_filestream *) = f->fmt->close;
00325 closefn(f);
00326 }
00327 if (f->f)
00328 fclose(f->f);
00329 if (f->vfs)
00330 ast_closestream(f->vfs);
00331 if (f->write_buffer) {
00332 ast_free(f->write_buffer);
00333 }
00334 if (f->orig_chan_name)
00335 free((void *) f->orig_chan_name);
00336 ast_module_unref(f->fmt->module);
00337 }
00338
00339 static struct ast_filestream *get_filestream(struct ast_format *fmt, FILE *bfile)
00340 {
00341 struct ast_filestream *s;
00342
00343 int l = sizeof(*s) + fmt->buf_size + fmt->desc_size;
00344 if ( (s = ao2_alloc(l, filestream_destructor)) == NULL)
00345 return NULL;
00346 s->fmt = fmt;
00347 s->f = bfile;
00348
00349 if (fmt->desc_size)
00350 s->_private = ((char *)(s + 1)) + fmt->buf_size;
00351 if (fmt->buf_size)
00352 s->buf = (char *)(s + 1);
00353 s->fr.src = fmt->name;
00354 return s;
00355 }
00356
00357
00358
00359
00360
00361 enum wrap_fn { WRAP_OPEN, WRAP_REWRITE };
00362
00363 static int fn_wrapper(struct ast_filestream *s, const char *comment, enum wrap_fn mode)
00364 {
00365 struct ast_format *f = s->fmt;
00366 int ret = -1;
00367 int (*openfn)(struct ast_filestream *s);
00368
00369 if (mode == WRAP_OPEN && (openfn = f->open) && openfn(s))
00370 ast_log(LOG_WARNING, "Unable to open format %s\n", f->name);
00371 else if (mode == WRAP_REWRITE && f->rewrite && f->rewrite(s, comment))
00372 ast_log(LOG_WARNING, "Unable to rewrite format %s\n", f->name);
00373 else {
00374
00375 ast_module_ref(f->module);
00376 ret = 0;
00377 }
00378 return ret;
00379 }
00380
00381 static int rewrite_wrapper(struct ast_filestream *s, const char *comment)
00382 {
00383 return fn_wrapper(s, comment, WRAP_REWRITE);
00384 }
00385
00386 static int open_wrapper(struct ast_filestream *s)
00387 {
00388 return fn_wrapper(s, NULL, WRAP_OPEN);
00389 }
00390
00391 enum file_action {
00392 ACTION_EXISTS = 1,
00393 ACTION_DELETE,
00394 ACTION_RENAME,
00395 ACTION_OPEN,
00396 ACTION_COPY
00397 };
00398
00399
00400
00401
00402
00403
00404
00405
00406
00407
00408 static int ast_filehelper(const char *filename, const void *arg2, const char *fmt, const enum file_action action)
00409 {
00410 struct ast_format *f;
00411 int res = (action == ACTION_EXISTS) ? 0 : -1;
00412
00413 AST_RWLIST_RDLOCK(&formats);
00414
00415 AST_RWLIST_TRAVERSE(&formats, f, list) {
00416 char *stringp, *ext = NULL;
00417
00418 if (fmt && !exts_compare(f->exts, fmt))
00419 continue;
00420
00421
00422
00423
00424
00425 stringp = ast_strdupa(f->exts);
00426 while ( (ext = strsep(&stringp, "|")) ) {
00427 struct stat st;
00428 char *fn = build_filename(filename, ext);
00429
00430 if (fn == NULL)
00431 continue;
00432
00433 if ( stat(fn, &st) ) {
00434 ast_free(fn);
00435 continue;
00436 }
00437
00438
00439
00440 if (action == ACTION_OPEN) {
00441 struct ast_channel *chan = (struct ast_channel *)arg2;
00442 FILE *bfile;
00443 struct ast_filestream *s;
00444
00445 if ( !(chan->writeformat & f->format) &&
00446 !((f->format & AST_FORMAT_AUDIO_MASK && fmt) ||
00447 (f->format & AST_FORMAT_VIDEO_MASK && fmt))) {
00448 ast_free(fn);
00449 continue;
00450 }
00451 if ( (bfile = fopen(fn, "r")) == NULL) {
00452 ast_free(fn);
00453 continue;
00454 }
00455 s = get_filestream(f, bfile);
00456 if (!s) {
00457 fclose(bfile);
00458 ast_free(fn);
00459 continue;
00460 }
00461 if (open_wrapper(s)) {
00462 ast_free(fn);
00463 ast_closestream(s);
00464 continue;
00465 }
00466 if (st.st_size == 0) {
00467 ast_log(LOG_WARNING, "File %s detected to have zero size.\n", fn);
00468 }
00469
00470 res = 1;
00471 s->lasttimeout = -1;
00472 s->fmt = f;
00473 s->trans = NULL;
00474 s->filename = NULL;
00475 if (s->fmt->format & AST_FORMAT_AUDIO_MASK) {
00476 if (chan->stream)
00477 ast_closestream(chan->stream);
00478 chan->stream = s;
00479 } else {
00480 if (chan->vstream)
00481 ast_closestream(chan->vstream);
00482 chan->vstream = s;
00483 }
00484 ast_free(fn);
00485 break;
00486 }
00487 switch (action) {
00488 case ACTION_OPEN:
00489 break;
00490
00491 case ACTION_EXISTS:
00492 res |= f->format;
00493 break;
00494
00495 case ACTION_DELETE:
00496 if ( (res = unlink(fn)) )
00497 ast_log(LOG_WARNING, "unlink(%s) failed: %s\n", fn, strerror(errno));
00498 break;
00499
00500 case ACTION_RENAME:
00501 case ACTION_COPY: {
00502 char *nfn = build_filename((const char *)arg2, ext);
00503 if (!nfn)
00504 ast_log(LOG_WARNING, "Out of memory\n");
00505 else {
00506 res = action == ACTION_COPY ? copy(fn, nfn) : rename(fn, nfn);
00507 if (res)
00508 ast_log(LOG_WARNING, "%s(%s,%s) failed: %s\n",
00509 action == ACTION_COPY ? "copy" : "rename",
00510 fn, nfn, strerror(errno));
00511 ast_free(nfn);
00512 }
00513 }
00514 break;
00515
00516 default:
00517 ast_log(LOG_WARNING, "Unknown helper %d\n", action);
00518 }
00519 ast_free(fn);
00520 }
00521 }
00522 AST_RWLIST_UNLOCK(&formats);
00523 return res;
00524 }
00525
00526 static int is_absolute_path(const char *filename)
00527 {
00528 return filename[0] == '/';
00529 }
00530
00531 static int fileexists_test(const char *filename, const char *fmt, const char *lang,
00532 char *buf, int buflen)
00533 {
00534 if (buf == NULL) {
00535 return -1;
00536 }
00537
00538 if (ast_language_is_prefix && !is_absolute_path(filename)) {
00539 if (lang) {
00540 snprintf(buf, buflen, "%s/%s", lang, filename);
00541 } else {
00542 snprintf(buf, buflen, "%s", filename);
00543 }
00544 } else {
00545 strcpy(buf, filename);
00546 if (lang) {
00547
00548 const char *c = strrchr(filename, '/');
00549 int offset = c ? c - filename + 1 : 0;
00550 snprintf(buf + offset, buflen - offset, "%s/%s", lang, filename + offset);
00551 }
00552 }
00553
00554 return ast_filehelper(buf, NULL, fmt, ACTION_EXISTS);
00555 }
00556
00557
00558
00559
00560
00561
00562
00563
00564
00565
00566
00567
00568 static int fileexists_core(const char *filename, const char *fmt, const char *preflang,
00569 char *buf, int buflen)
00570 {
00571 int res = -1;
00572 char *lang = NULL;
00573
00574 if (buf == NULL) {
00575 return -1;
00576 }
00577
00578
00579
00580
00581
00582
00583
00584
00585
00586 if (!ast_strlen_zero(preflang)) {
00587
00588 if ((res = fileexists_test(filename, fmt, preflang, buf, buflen)) > 0) {
00589 return res;
00590 } else {
00591
00592 char *postfix = NULL;
00593 postfix = lang = ast_strdupa(preflang);
00594
00595 strsep(&postfix, "_");
00596 if (postfix) {
00597 if ((res = fileexists_test(filename, fmt, lang, buf, buflen)) > 0) {
00598 return res;
00599 }
00600 }
00601 }
00602 }
00603
00604
00605 if ((res = fileexists_test(filename, fmt, NULL, buf, buflen)) > 0) {
00606 return res;
00607 }
00608
00609
00610 if ((ast_strlen_zero(preflang) || strcmp(preflang, DEFAULT_LANGUAGE)) && (ast_strlen_zero(lang) || strcmp(lang, DEFAULT_LANGUAGE))) {
00611 if ((res = fileexists_test(filename, fmt, DEFAULT_LANGUAGE, buf, buflen)) > 0) {
00612 return res;
00613 }
00614 }
00615
00616 return 0;
00617 }
00618
00619 struct ast_filestream *ast_openstream(struct ast_channel *chan, const char *filename, const char *preflang)
00620 {
00621 return ast_openstream_full(chan, filename, preflang, 0);
00622 }
00623
00624 struct ast_filestream *ast_openstream_full(struct ast_channel *chan, const char *filename, const char *preflang, int asis)
00625 {
00626
00627
00628
00629
00630
00631 int fmts, res, buflen;
00632 char *buf;
00633
00634 if (!asis) {
00635
00636 ast_stopstream(chan);
00637 if (chan->generator)
00638 ast_deactivate_generator(chan);
00639 }
00640 if (preflang == NULL)
00641 preflang = "";
00642 buflen = strlen(preflang) + strlen(filename) + 4;
00643 buf = alloca(buflen);
00644 if (buf == NULL)
00645 return NULL;
00646 fmts = fileexists_core(filename, NULL, preflang, buf, buflen);
00647 if (fmts > 0)
00648 fmts &= AST_FORMAT_AUDIO_MASK;
00649 if (fmts < 1) {
00650 ast_log(LOG_WARNING, "File %s does not exist in any format\n", filename);
00651 return NULL;
00652 }
00653 chan->oldwriteformat = chan->writeformat;
00654
00655 res = ast_set_write_format(chan, fmts);
00656 res = ast_filehelper(buf, chan, NULL, ACTION_OPEN);
00657 if (res >= 0)
00658 return chan->stream;
00659 return NULL;
00660 }
00661
00662 struct ast_filestream *ast_openvstream(struct ast_channel *chan, const char *filename, const char *preflang)
00663 {
00664
00665
00666
00667 unsigned int format;
00668 char *buf;
00669 int buflen;
00670
00671 if (preflang == NULL)
00672 preflang = "";
00673 buflen = strlen(preflang) + strlen(filename) + 4;
00674 buf = alloca(buflen);
00675 if (buf == NULL)
00676 return NULL;
00677
00678 for (format = AST_FORMAT_AUDIO_MASK + 1; format <= AST_FORMAT_VIDEO_MASK; format = format << 1) {
00679 int fd;
00680 const char *fmt;
00681
00682 if (!(chan->nativeformats & format))
00683 continue;
00684 fmt = ast_getformatname(format);
00685 if ( fileexists_core(filename, fmt, preflang, buf, buflen) < 1)
00686 continue;
00687 fd = ast_filehelper(buf, chan, fmt, ACTION_OPEN);
00688 if (fd >= 0)
00689 return chan->vstream;
00690 ast_log(LOG_WARNING, "File %s has video but couldn't be opened\n", filename);
00691 }
00692 return NULL;
00693 }
00694
00695 static struct ast_frame *read_frame(struct ast_filestream *s, int *whennext)
00696 {
00697 struct ast_frame *fr, *new_fr;
00698
00699 if (!s || !s->fmt) {
00700 return NULL;
00701 }
00702
00703 if (!(fr = s->fmt->read(s, whennext))) {
00704 return NULL;
00705 }
00706
00707 if (!(new_fr = ast_frisolate(fr))) {
00708 ast_frfree(fr);
00709 return NULL;
00710 }
00711
00712 if (new_fr != fr) {
00713 ast_frfree(fr);
00714 fr = new_fr;
00715 }
00716
00717 return fr;
00718 }
00719
00720 struct ast_frame *ast_readframe(struct ast_filestream *s)
00721 {
00722 int whennext = 0;
00723
00724 return read_frame(s, &whennext);
00725 }
00726
00727 enum fsread_res {
00728 FSREAD_FAILURE,
00729 FSREAD_SUCCESS_SCHED,
00730 FSREAD_SUCCESS_NOSCHED,
00731 };
00732
00733 static int ast_fsread_audio(const void *data);
00734
00735 static enum fsread_res ast_readaudio_callback(struct ast_filestream *s)
00736 {
00737 int whennext = 0;
00738
00739 while (!whennext) {
00740 struct ast_frame *fr;
00741
00742 if (s->orig_chan_name && strcasecmp(s->owner->name, s->orig_chan_name)) {
00743 goto return_failure;
00744 }
00745
00746 fr = read_frame(s, &whennext);
00747
00748 if (!fr || ast_write(s->owner, fr) ) {
00749 if (fr) {
00750 ast_log(LOG_WARNING, "Failed to write frame\n");
00751 ast_frfree(fr);
00752 }
00753 goto return_failure;
00754 }
00755
00756 if (fr) {
00757 ast_frfree(fr);
00758 }
00759 }
00760
00761 if (whennext != s->lasttimeout) {
00762 if (s->owner->timingfd > -1) {
00763 float samp_rate = (float) ast_format_rate(s->fmt->format);
00764 unsigned int rate;
00765
00766 rate = (unsigned int) roundf(samp_rate / ((float) whennext));
00767
00768 ast_settimeout(s->owner, rate, ast_fsread_audio, s);
00769 } else {
00770 s->owner->streamid = ast_sched_add(s->owner->sched,
00771 whennext / (ast_format_rate(s->fmt->format) / 1000), ast_fsread_audio, s);
00772 }
00773 s->lasttimeout = whennext;
00774 return FSREAD_SUCCESS_NOSCHED;
00775 }
00776 return FSREAD_SUCCESS_SCHED;
00777
00778 return_failure:
00779 s->owner->streamid = -1;
00780 ast_settimeout(s->owner, 0, NULL, NULL);
00781 return FSREAD_FAILURE;
00782 }
00783
00784 static int ast_fsread_audio(const void *data)
00785 {
00786 struct ast_filestream *fs = (struct ast_filestream *)data;
00787 enum fsread_res res;
00788
00789 res = ast_readaudio_callback(fs);
00790
00791 if (res == FSREAD_SUCCESS_SCHED)
00792 return 1;
00793
00794 return 0;
00795 }
00796
00797 static int ast_fsread_video(const void *data);
00798
00799 static enum fsread_res ast_readvideo_callback(struct ast_filestream *s)
00800 {
00801 int whennext = 0;
00802
00803 while (!whennext) {
00804 struct ast_frame *fr = read_frame(s, &whennext);
00805
00806 if (!fr || ast_write(s->owner, fr) ) {
00807 if (fr) {
00808 ast_log(LOG_WARNING, "Failed to write frame\n");
00809 ast_frfree(fr);
00810 }
00811 s->owner->vstreamid = -1;
00812 return FSREAD_FAILURE;
00813 }
00814
00815 if (fr) {
00816 ast_frfree(fr);
00817 }
00818 }
00819
00820 if (whennext != s->lasttimeout) {
00821 s->owner->vstreamid = ast_sched_add(s->owner->sched,
00822 whennext / (ast_format_rate(s->fmt->format) / 1000),
00823 ast_fsread_video, s);
00824 s->lasttimeout = whennext;
00825 return FSREAD_SUCCESS_NOSCHED;
00826 }
00827
00828 return FSREAD_SUCCESS_SCHED;
00829 }
00830
00831 static int ast_fsread_video(const void *data)
00832 {
00833 struct ast_filestream *fs = (struct ast_filestream *)data;
00834 enum fsread_res res;
00835
00836 res = ast_readvideo_callback(fs);
00837
00838 if (res == FSREAD_SUCCESS_SCHED)
00839 return 1;
00840
00841 return 0;
00842 }
00843
00844 int ast_applystream(struct ast_channel *chan, struct ast_filestream *s)
00845 {
00846 s->owner = chan;
00847 return 0;
00848 }
00849
00850 int ast_playstream(struct ast_filestream *s)
00851 {
00852 enum fsread_res res;
00853
00854 if (s->fmt->format & AST_FORMAT_AUDIO_MASK)
00855 res = ast_readaudio_callback(s);
00856 else
00857 res = ast_readvideo_callback(s);
00858
00859 return (res == FSREAD_FAILURE) ? -1 : 0;
00860 }
00861
00862 int ast_seekstream(struct ast_filestream *fs, off_t sample_offset, int whence)
00863 {
00864 return fs->fmt->seek(fs, sample_offset, whence);
00865 }
00866
00867 int ast_truncstream(struct ast_filestream *fs)
00868 {
00869 return fs->fmt->trunc(fs);
00870 }
00871
00872 off_t ast_tellstream(struct ast_filestream *fs)
00873 {
00874 return fs->fmt->tell(fs);
00875 }
00876
00877 int ast_stream_fastforward(struct ast_filestream *fs, off_t ms)
00878 {
00879 return ast_seekstream(fs, ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
00880 }
00881
00882 int ast_stream_rewind(struct ast_filestream *fs, off_t ms)
00883 {
00884 return ast_seekstream(fs, -ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
00885 }
00886
00887 int ast_closestream(struct ast_filestream *f)
00888 {
00889
00890
00891
00892
00893
00894
00895 if (f->owner) {
00896 if (f->fmt->format < AST_FORMAT_AUDIO_MASK) {
00897 f->owner->stream = NULL;
00898 AST_SCHED_DEL(f->owner->sched, f->owner->streamid);
00899 ast_settimeout(f->owner, 0, NULL, NULL);
00900 } else {
00901 f->owner->vstream = NULL;
00902 AST_SCHED_DEL(f->owner->sched, f->owner->vstreamid);
00903 }
00904 }
00905
00906 ao2_ref(f, -1);
00907 return 0;
00908 }
00909
00910
00911
00912
00913
00914 int ast_fileexists(const char *filename, const char *fmt, const char *preflang)
00915 {
00916 char *buf;
00917 int buflen;
00918
00919 if (preflang == NULL)
00920 preflang = "";
00921 buflen = strlen(preflang) + strlen(filename) + 4;
00922 buf = alloca(buflen);
00923 if (buf == NULL)
00924 return 0;
00925 return fileexists_core(filename, fmt, preflang, buf, buflen);
00926 }
00927
00928 int ast_filedelete(const char *filename, const char *fmt)
00929 {
00930 return ast_filehelper(filename, NULL, fmt, ACTION_DELETE);
00931 }
00932
00933 int ast_filerename(const char *filename, const char *filename2, const char *fmt)
00934 {
00935 return ast_filehelper(filename, filename2, fmt, ACTION_RENAME);
00936 }
00937
00938 int ast_filecopy(const char *filename, const char *filename2, const char *fmt)
00939 {
00940 return ast_filehelper(filename, filename2, fmt, ACTION_COPY);
00941 }
00942
00943 int ast_streamfile(struct ast_channel *chan, const char *filename, const char *preflang)
00944 {
00945 struct ast_filestream *fs;
00946 struct ast_filestream *vfs=NULL;
00947 char fmt[256];
00948 int seekattempt;
00949 int res;
00950
00951 fs = ast_openstream(chan, filename, preflang);
00952 if (!fs) {
00953 ast_log(LOG_WARNING, "Unable to open %s (format %s): %s\n", filename, ast_getformatname_multiple(fmt, sizeof(fmt), chan->nativeformats), strerror(errno));
00954 return -1;
00955 }
00956
00957
00958
00959
00960 seekattempt = fseek(fs->f, -1, SEEK_END);
00961 if (!seekattempt)
00962 ast_seekstream(fs, 0, SEEK_SET);
00963 else
00964 return 0;
00965
00966 vfs = ast_openvstream(chan, filename, preflang);
00967 if (vfs) {
00968 ast_debug(1, "Ooh, found a video stream, too, format %s\n", ast_getformatname(vfs->fmt->format));
00969 }
00970
00971 if (ast_test_flag(chan, AST_FLAG_MASQ_NOSTREAM))
00972 fs->orig_chan_name = ast_strdup(chan->name);
00973 if (ast_applystream(chan, fs))
00974 return -1;
00975 if (vfs && ast_applystream(chan, vfs))
00976 return -1;
00977 res = ast_playstream(fs);
00978 if (!res && vfs)
00979 res = ast_playstream(vfs);
00980 ast_verb(3, "<%s> Playing '%s.%s' (language '%s')\n", chan->name, filename, ast_getformatname(chan->writeformat), preflang ? preflang : "default");
00981
00982 return res;
00983 }
00984
00985 struct ast_filestream *ast_readfile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
00986 {
00987 FILE *bfile;
00988 struct ast_format *f;
00989 struct ast_filestream *fs = NULL;
00990 char *fn;
00991 int format_found = 0;
00992
00993 AST_RWLIST_RDLOCK(&formats);
00994
00995 AST_RWLIST_TRAVERSE(&formats, f, list) {
00996 fs = NULL;
00997 if (!exts_compare(f->exts, type))
00998 continue;
00999 else
01000 format_found = 1;
01001
01002 fn = build_filename(filename, type);
01003 errno = 0;
01004 bfile = fopen(fn, "r");
01005
01006 if (!bfile || (fs = get_filestream(f, bfile)) == NULL || open_wrapper(fs) ) {
01007 ast_log(LOG_WARNING, "Unable to open %s\n", fn);
01008 if (fs) {
01009 ast_closestream(fs);
01010 }
01011 fs = NULL;
01012 bfile = NULL;
01013 ast_free(fn);
01014 break;
01015 }
01016
01017 fs->trans = NULL;
01018 fs->fmt = f;
01019 fs->flags = flags;
01020 fs->mode = mode;
01021 fs->filename = ast_strdup(filename);
01022 fs->vfs = NULL;
01023 break;
01024 }
01025
01026 AST_RWLIST_UNLOCK(&formats);
01027 if (!format_found)
01028 ast_log(LOG_WARNING, "No such format '%s'\n", type);
01029
01030 return fs;
01031 }
01032
01033 struct ast_filestream *ast_writefile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
01034 {
01035 int fd, myflags = 0;
01036
01037 FILE *bfile = NULL;
01038 struct ast_format *f;
01039 struct ast_filestream *fs = NULL;
01040 char *buf = NULL;
01041 size_t size = 0;
01042 int format_found = 0;
01043
01044 AST_RWLIST_RDLOCK(&formats);
01045
01046
01047
01048 if (flags & O_APPEND) {
01049 flags &= ~O_APPEND;
01050 } else {
01051 myflags = O_TRUNC;
01052 }
01053
01054 myflags |= O_WRONLY | O_CREAT;
01055
01056
01057
01058
01059 AST_RWLIST_TRAVERSE(&formats, f, list) {
01060 char *fn, *orig_fn = NULL;
01061 if (fs)
01062 break;
01063
01064 if (!exts_compare(f->exts, type))
01065 continue;
01066 else
01067 format_found = 1;
01068
01069 fn = build_filename(filename, type);
01070 fd = open(fn, flags | myflags, mode);
01071 if (fd > -1) {
01072
01073 bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
01074 if (!bfile) {
01075 ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
01076 close(fd);
01077 fd = -1;
01078 }
01079 }
01080
01081 if (ast_opt_cache_record_files && (fd > -1)) {
01082 char *c;
01083
01084 fclose(bfile);
01085
01086
01087
01088
01089 orig_fn = ast_strdupa(fn);
01090 for (c = fn; *c; c++)
01091 if (*c == '/')
01092 *c = '_';
01093
01094 size = strlen(fn) + strlen(record_cache_dir) + 2;
01095 buf = alloca(size);
01096 strcpy(buf, record_cache_dir);
01097 strcat(buf, "/");
01098 strcat(buf, fn);
01099 ast_free(fn);
01100 fn = buf;
01101 fd = open(fn, flags | myflags, mode);
01102 if (fd > -1) {
01103
01104 bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
01105 if (!bfile) {
01106 ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
01107 close(fd);
01108 fd = -1;
01109 }
01110 }
01111 }
01112 if (fd > -1) {
01113 errno = 0;
01114 fs = get_filestream(f, bfile);
01115 if (!fs || rewrite_wrapper(fs, comment)) {
01116 ast_log(LOG_WARNING, "Unable to rewrite %s\n", fn);
01117 close(fd);
01118 if (orig_fn) {
01119 unlink(fn);
01120 unlink(orig_fn);
01121 }
01122 if (fs) {
01123 ast_closestream(fs);
01124 fs = NULL;
01125 }
01126 continue;
01127 }
01128 fs->trans = NULL;
01129 fs->fmt = f;
01130 fs->flags = flags;
01131 fs->mode = mode;
01132 if (orig_fn) {
01133 fs->realfilename = ast_strdup(orig_fn);
01134 fs->filename = ast_strdup(fn);
01135 } else {
01136 fs->realfilename = NULL;
01137 fs->filename = ast_strdup(filename);
01138 }
01139 fs->vfs = NULL;
01140
01141
01142 if ((fs->write_buffer = ast_malloc(32768))){
01143 setvbuf(fs->f, fs->write_buffer, _IOFBF, 32768);
01144 }
01145
01146 f->seek(fs, 0, SEEK_END);
01147 } else if (errno != EEXIST) {
01148 ast_log(LOG_WARNING, "Unable to open file %s: %s\n", fn, strerror(errno));
01149 if (orig_fn)
01150 unlink(orig_fn);
01151 }
01152
01153 if (!buf)
01154 ast_free(fn);
01155 }
01156
01157 AST_RWLIST_UNLOCK(&formats);
01158
01159 if (!format_found)
01160 ast_log(LOG_WARNING, "No such format '%s'\n", type);
01161
01162 return fs;
01163 }
01164
01165
01166
01167
01168 static int waitstream_core(struct ast_channel *c, const char *breakon,
01169 const char *forward, const char *reverse, int skip_ms,
01170 int audiofd, int cmdfd, const char *context)
01171 {
01172 const char *orig_chan_name = NULL;
01173 int err = 0;
01174
01175 if (!breakon)
01176 breakon = "";
01177 if (!forward)
01178 forward = "";
01179 if (!reverse)
01180 reverse = "";
01181
01182
01183 ast_set_flag(c, AST_FLAG_END_DTMF_ONLY);
01184
01185 if (ast_test_flag(c, AST_FLAG_MASQ_NOSTREAM))
01186 orig_chan_name = ast_strdupa(c->name);
01187
01188 while (c->stream) {
01189 int res;
01190 int ms;
01191
01192 if (orig_chan_name && strcasecmp(orig_chan_name, c->name)) {
01193 ast_stopstream(c);
01194 err = 1;
01195 break;
01196 }
01197
01198 ms = ast_sched_wait(c->sched);
01199
01200 if (ms < 0 && !c->timingfunc) {
01201 ast_stopstream(c);
01202 break;
01203 }
01204 if (ms < 0)
01205 ms = 1000;
01206 if (cmdfd < 0) {
01207 res = ast_waitfor(c, ms);
01208 if (res < 0) {
01209 ast_log(LOG_WARNING, "Select failed (%s)\n", strerror(errno));
01210 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01211 return res;
01212 }
01213 } else {
01214 int outfd;
01215 struct ast_channel *rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms);
01216 if (!rchan && (outfd < 0) && (ms)) {
01217
01218 if (errno == EINTR)
01219 continue;
01220 ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno));
01221 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01222 return -1;
01223 } else if (outfd > -1) {
01224
01225 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01226 return 1;
01227 }
01228
01229 res = rchan ? 1 : 0;
01230 }
01231 if (res > 0) {
01232 struct ast_frame *fr = ast_read(c);
01233 if (!fr) {
01234 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01235 return -1;
01236 }
01237 switch (fr->frametype) {
01238 case AST_FRAME_DTMF_END:
01239 if (context) {
01240 const char exten[2] = { fr->subclass, '\0' };
01241 if (ast_exists_extension(c, context, exten, 1, c->cid.cid_num)) {
01242 res = fr->subclass;
01243 ast_frfree(fr);
01244 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01245 return res;
01246 }
01247 } else {
01248 res = fr->subclass;
01249 if (strchr(forward, res)) {
01250 int eoftest;
01251 ast_stream_fastforward(c->stream, skip_ms);
01252 eoftest = fgetc(c->stream->f);
01253 if (feof(c->stream->f)) {
01254 ast_stream_rewind(c->stream, skip_ms);
01255 } else {
01256 ungetc(eoftest, c->stream->f);
01257 }
01258 } else if (strchr(reverse, res)) {
01259 ast_stream_rewind(c->stream, skip_ms);
01260 } else if (strchr(breakon, res)) {
01261 ast_frfree(fr);
01262 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01263 return res;
01264 }
01265 }
01266 break;
01267 case AST_FRAME_CONTROL:
01268 switch (fr->subclass) {
01269 case AST_CONTROL_HANGUP:
01270 case AST_CONTROL_BUSY:
01271 case AST_CONTROL_CONGESTION:
01272 ast_frfree(fr);
01273 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01274 return -1;
01275 case AST_CONTROL_RINGING:
01276 case AST_CONTROL_ANSWER:
01277 case AST_CONTROL_VIDUPDATE:
01278 case AST_CONTROL_SRCUPDATE:
01279 case AST_CONTROL_SRCCHANGE:
01280 case AST_CONTROL_HOLD:
01281 case AST_CONTROL_UNHOLD:
01282 case -1:
01283
01284 break;
01285 default:
01286 ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", fr->subclass);
01287 }
01288 break;
01289 case AST_FRAME_VOICE:
01290
01291 if (audiofd > -1) {
01292 if (write(audiofd, fr->data.ptr, fr->datalen) < 0) {
01293 ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno));
01294 }
01295 }
01296 default:
01297
01298 break;
01299 }
01300 ast_frfree(fr);
01301 }
01302 ast_sched_runq(c->sched);
01303 }
01304
01305 ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
01306
01307 return (err || c->_softhangup) ? -1 : 0;
01308 }
01309
01310 int ast_waitstream_fr(struct ast_channel *c, const char *breakon, const char *forward, const char *reverse, int ms)
01311 {
01312 return waitstream_core(c, breakon, forward, reverse, ms,
01313 -1 , -1 , NULL );
01314 }
01315
01316 int ast_waitstream(struct ast_channel *c, const char *breakon)
01317 {
01318 return waitstream_core(c, breakon, NULL, NULL, 0, -1, -1, NULL);
01319 }
01320
01321 int ast_waitstream_full(struct ast_channel *c, const char *breakon, int audiofd, int cmdfd)
01322 {
01323 return waitstream_core(c, breakon, NULL, NULL, 0,
01324 audiofd, cmdfd, NULL );
01325 }
01326
01327 int ast_waitstream_exten(struct ast_channel *c, const char *context)
01328 {
01329
01330
01331
01332 if (!context)
01333 context = c->context;
01334 return waitstream_core(c, NULL, NULL, NULL, 0,
01335 -1, -1, context);
01336 }
01337
01338
01339
01340
01341
01342
01343 int ast_stream_and_wait(struct ast_channel *chan, const char *file, const char *digits)
01344 {
01345 int res = 0;
01346 if (!ast_strlen_zero(file)) {
01347 res = ast_streamfile(chan, file, chan->language);
01348 if (!res) {
01349 res = ast_waitstream(chan, digits);
01350 }
01351 }
01352 return res;
01353 }
01354
01355 char *ast_format_str_reduce(char *fmts)
01356 {
01357 struct ast_format *f;
01358 struct ast_format *fmts_ptr[AST_MAX_FORMATS];
01359 char *fmts_str[AST_MAX_FORMATS];
01360 char *stringp, *type;
01361 char *orig = fmts;
01362 int i, j, x, first, found = 0;
01363 int len = strlen(fmts) + 1;
01364 int res;
01365
01366 if (AST_RWLIST_RDLOCK(&formats)) {
01367 ast_log(LOG_WARNING, "Unable to lock format list\n");
01368 return NULL;
01369 }
01370
01371 stringp = ast_strdupa(fmts);
01372
01373 for (x = 0; (type = strsep(&stringp, "|")) && x < AST_MAX_FORMATS; x++) {
01374 AST_RWLIST_TRAVERSE(&formats, f, list) {
01375 if (exts_compare(f->exts, type)) {
01376 found = 1;
01377 break;
01378 }
01379 }
01380
01381 fmts_str[x] = type;
01382 if (found) {
01383 fmts_ptr[x] = f;
01384 } else {
01385 fmts_ptr[x] = NULL;
01386 }
01387 }
01388 AST_RWLIST_UNLOCK(&formats);
01389
01390 first = 1;
01391 for (i = 0; i < x; i++) {
01392
01393 if (!fmts_ptr[i]) {
01394 ast_log(LOG_WARNING, "ignoring unknown format '%s'\n", fmts_str[i]);
01395 continue;
01396 }
01397
01398
01399 if (first) {
01400 res = snprintf(fmts, len, "%s", fmts_str[i]);
01401 fmts += res;
01402 len -= res;
01403 first = 0;
01404 continue;
01405 }
01406
01407 found = 0;
01408 for (j = 0; j < i; j++) {
01409
01410 if (fmts_ptr[j] == fmts_ptr[i]) {
01411 found = 1;
01412 break;
01413 }
01414 }
01415
01416 if (!found) {
01417 res = snprintf(fmts, len, "|%s", fmts_str[i]);
01418 fmts += res;
01419 len -= res;
01420 }
01421 }
01422
01423 if (first) {
01424 ast_log(LOG_WARNING, "no known formats found in format list (%s)\n", orig);
01425 return NULL;
01426 }
01427
01428 return orig;
01429 }
01430
01431 static char *handle_cli_core_show_file_formats(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
01432 {
01433 #define FORMAT "%-10s %-10s %-20s\n"
01434 #define FORMAT2 "%-10s %-10s %-20s\n"
01435 struct ast_format *f;
01436 int count_fmt = 0;
01437
01438 switch (cmd) {
01439 case CLI_INIT:
01440 e->command = "core show file formats";
01441 e->usage =
01442 "Usage: core show file formats\n"
01443 " Displays currently registered file formats (if any).\n";
01444 return NULL;
01445 case CLI_GENERATE:
01446 return NULL;
01447 }
01448
01449 if (a->argc != 4)
01450 return CLI_SHOWUSAGE;
01451
01452 ast_cli(a->fd, FORMAT, "Format", "Name", "Extensions");
01453 ast_cli(a->fd, FORMAT, "------", "----", "----------");
01454
01455 AST_RWLIST_RDLOCK(&formats);
01456 AST_RWLIST_TRAVERSE(&formats, f, list) {
01457 ast_cli(a->fd, FORMAT2, ast_getformatname(f->format), f->name, f->exts);
01458 count_fmt++;
01459 }
01460 AST_RWLIST_UNLOCK(&formats);
01461 ast_cli(a->fd, "%d file formats registered.\n", count_fmt);
01462 return CLI_SUCCESS;
01463 #undef FORMAT
01464 #undef FORMAT2
01465 }
01466
01467 struct ast_cli_entry cli_file[] = {
01468 AST_CLI_DEFINE(handle_cli_core_show_file_formats, "Displays file formats")
01469 };
01470
01471 int ast_file_init(void)
01472 {
01473 ast_cli_register_multiple(cli_file, sizeof(cli_file) / sizeof(struct ast_cli_entry));
01474 return 0;
01475 }