diff --git a/file.c b/file.c
new file mode 100755
index 0000000000000000000000000000000000000000..9ee50c5604432390410f48e5e35790cc656d7482
--- /dev/null
+++ b/file.c
@@ -0,0 +1,490 @@
+/*
+ * Asterisk -- A telephony toolkit for Linux.
+ *
+ * Generic File Format Support.
+ *
+ * Copyright (C) 1999, Adtran Inc. and Linux Support Services, LLC
+ *
+ * Mark Spencer <markster@linux-support.net>
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License
+ */
+
+#include <asterisk/frame.h>
+#include <asterisk/file.h>
+#include <asterisk/logger.h>
+#include <asterisk/channel.h>
+#include <asterisk/sched.h>
+#include <asterisk/options.h>
+#include <asterisk/translate.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <sys/stat.h>
+#include "asterisk.h"
+
+struct ast_format {
+ /* Name of format */
+ char name[80];
+ /* Extensions (separated by | if more than one)
+ this format can read. First is assumed for writing (e.g. .mp3) */
+ char exts[80];
+ /* Format of frames it uses/provides (one only) */
+ int format;
+ /* Open an input stream, and start playback */
+ struct ast_filestream * (*open)(int fd);
+ /* Open an output stream, of a given file descriptor and comment it appropriately if applicable */
+ struct ast_filestream * (*rewrite)(int fd, char *comment);
+ /* Apply a reading filestream to a channel */
+ int (*apply)(struct ast_channel *, struct ast_filestream *);
+ /* Write a frame to a channel */
+ int (*write)(struct ast_filestream *, struct ast_frame *);
+ /* Read the next frame from the filestream (if available) */
+ struct ast_frame * (*read)(struct ast_filestream *);
+ /* Close file, and destroy filestream structure */
+ void (*close)(struct ast_filestream *);
+ /* Retrieve file comment */
+ char * (*getcomment)(struct ast_filestream *);
+ /* Link */
+ struct ast_format *next;
+};
+
+struct ast_filestream {
+ /* Everybody reserves a block of AST_RESERVED_POINTERS pointers for us */
+ struct ast_format *fmt;
+ /* Transparently translate from another format -- just once */
+ struct ast_trans_pvt *trans;
+ struct ast_tranlator_pvt *tr;
+};
+
+static pthread_mutex_t formatlock = PTHREAD_MUTEX_INITIALIZER;
+
+static struct ast_format *formats = NULL;
+
+int ast_format_register(char *name, char *exts, int format,
+ struct ast_filestream * (*open)(int fd),
+ struct ast_filestream * (*rewrite)(int fd, char *comment),
+ int (*apply)(struct ast_channel *, struct ast_filestream *),
+ int (*write)(struct ast_filestream *, struct ast_frame *),
+ struct ast_frame * (*read)(struct ast_filestream *),
+ void (*close)(struct ast_filestream *),
+ char * (*getcomment)(struct ast_filestream *))
+{
+ struct ast_format *tmp;
+ if (pthread_mutex_lock(&formatlock)) {
+ ast_log(LOG_WARNING, "Unable to lock format list\n");
+ return -1;
+ }
+ tmp = formats;
+ while(tmp) {
+ if (!strcasecmp(name, tmp->name)) {
+ pthread_mutex_unlock(&formatlock);
+ ast_log(LOG_WARNING, "Tried to register '%s' format, already registered\n", name);
+ return -1;
+ }
+ tmp = tmp->next;
+ }
+ tmp = malloc(sizeof(struct ast_format));
+ if (!tmp) {
+ ast_log(LOG_WARNING, "Out of memory\n");
+ pthread_mutex_unlock(&formatlock);
+ return -1;
+ }
+ strncpy(tmp->name, name, sizeof(tmp->name));
+ strncpy(tmp->exts, exts, sizeof(tmp->exts));
+ tmp->open = open;
+ tmp->rewrite = rewrite;
+ tmp->apply = apply;
+ tmp->read = read;
+ tmp->write = write;
+ tmp->close = close;
+ tmp->format = format;
+ tmp->getcomment = getcomment;
+ tmp->next = formats;
+ formats = tmp;
+ pthread_mutex_unlock(&formatlock);
+ if (option_verbose > 1)
+ ast_verbose( VERBOSE_PREFIX_2 "Registered file format %s, extension(s) %s\n", name, exts);
+ return 0;
+}
+
+int ast_format_unregister(char *name)
+{
+ struct ast_format *tmp, *tmpl = NULL;
+ if (pthread_mutex_lock(&formatlock)) {
+ ast_log(LOG_WARNING, "Unable to lock format list\n");
+ return -1;
+ }
+ tmp = formats;
+ while(tmp) {
+ if (!strcasecmp(name, tmp->name)) {
+ if (tmpl)
+ tmpl->next = tmp->next;
+ else
+ formats = tmp->next;
+ free(tmp);
+ pthread_mutex_unlock(&formatlock);
+ if (option_verbose > 1)
+ ast_verbose( VERBOSE_PREFIX_2 "Unregistered format %s\n", name);
+ return 0;
+ }
+ tmp = tmp->next;
+ }
+ ast_log(LOG_WARNING, "Tried to unregister format %s, already unregistered\n", name);
+ return -1;
+}
+
+int ast_stopstream(struct ast_channel *tmp)
+{
+ if (tmp->trans)
+ tmp = tmp->trans;
+ /* Stop a running stream if there is one */
+ if (!tmp->stream)
+ return 0;
+ tmp->stream->fmt->close(tmp->stream);
+ if (tmp->master) {
+ ast_translator_destroy(tmp);
+ }
+ return 0;
+}
+
+int ast_closestream(struct ast_filestream *f)
+{
+ if (f->trans) {
+ ast_translator_free_path(f->trans);
+ }
+ /* Stop a running stream if there is one */
+ f->fmt->close(f);
+ return 0;
+}
+
+int ast_writestream(struct ast_filestream *fs, struct ast_frame *f)
+{
+ struct ast_frame_chain *fc, *f2;
+ int res = -1;
+ int count=0;
+ if (f->frametype != AST_FRAME_VOICE) {
+ ast_log(LOG_WARNING, "Tried to write non-voice frame\n");
+ return -1;
+ }
+ if ((fs->fmt->format & f->subclass) == f->subclass)
+ return fs->fmt->write(fs, f);
+ else {
+ /* XXX If they try to send us a type of frame that isn't the normal frame, and isn't
+ the one we've setup a translator for, we do the "wrong thing" XXX */
+ if (!fs->trans)
+ fs->trans = ast_translator_build_path(f->subclass, fs->fmt->format);
+ if (!fs->trans)
+ ast_log(LOG_WARNING, "Unable to translate to format %s, source format %d\n", fs->fmt->name, f->subclass);
+ else {
+ /* Build a chain of translated frames */
+ fc = ast_translate(fs->trans, f);
+ f2 = fc;
+ while(f2) {
+ res = fs->fmt->write(fs, f2->fr);
+ if (res) {
+ ast_log(LOG_WARNING, "Frame write failed\n");
+ break;
+ }
+ f2 = f2->next;
+ count++;
+ if (count > 1)
+ ast_log(LOG_DEBUG, "Count is %d\n", count);
+ }
+ if (fc)
+ ast_frchain(fc);
+ }
+ return res;
+ }
+}
+
+static char *build_filename(char *filename, char *ext)
+{
+ char *fn;
+ fn = malloc(strlen(AST_SOUNDS) + strlen(filename) + strlen(ext) + 10);
+ if (fn) {
+ if (filename[0] == '/')
+ sprintf(fn, "%s.%s", filename, ext);
+ else
+ sprintf(fn, "%s/%s.%s", AST_SOUNDS, filename, ext);
+ }
+ return fn;
+
+}
+
+#define ACTION_EXISTS 1
+#define ACTION_DELETE 2
+#define ACTION_RENAME 3
+#define ACTION_OPEN 4
+
+static int ast_filehelper(char *filename, char *filename2, char *fmt, int action)
+{
+ struct stat st;
+ struct ast_format *f;
+ struct ast_filestream *s;
+ int res=0, ret = 0;
+ char *ext=NULL, *exts, *fn, *nfn;
+ struct ast_channel *trans = (struct ast_channel *)filename2;
+
+ /* Start with negative response */
+ if (action == ACTION_EXISTS)
+ res = 0;
+ else
+ res = -1;
+ if (action == ACTION_OPEN)
+ ret = -1;
+ /* Check for a specific format */
+ if (pthread_mutex_lock(&formatlock)) {
+ ast_log(LOG_WARNING, "Unable to lock format list\n");
+ if (action == ACTION_EXISTS)
+ return 0;
+ else
+ return -1;
+ }
+ f = formats;
+ while(f) {
+ if (!fmt || !strcasecmp(f->name, fmt)) {
+ exts = strdup(f->exts);
+ /* Try each kind of extension */
+ ext = strtok(exts, "|");
+ do {
+ fn = build_filename(filename, ext);
+ if (fn) {
+ res = stat(fn, &st);
+ if (!res) {
+ switch(action) {
+ case ACTION_EXISTS:
+ ret |= f->format;
+ break;
+ case ACTION_DELETE:
+ res = unlink(fn);
+ if (res)
+ ast_log(LOG_WARNING, "unlink(%s) failed: %s\n", fn, strerror(errno));
+ break;
+ case ACTION_RENAME:
+ nfn = build_filename(filename2, ext);
+ if (nfn) {
+ res = rename(fn, nfn);
+ if (res)
+ ast_log(LOG_WARNING, "rename(%s,%s) failed: %s\n", fn, nfn, strerror(errno));
+ free(nfn);
+ } else
+ ast_log(LOG_WARNING, "Out of memory\n");
+ break;
+ case ACTION_OPEN:
+ if ((ret < 0) && ((trans->format & f->format) /* == trans->format */)) {
+ ret = open(fn, O_RDONLY);
+ if (ret >= 0) {
+ s = f->open(ret);
+ if (s) {
+ s->fmt = f;
+ s->trans = NULL;
+ trans->stream = s;
+ if (f->apply(trans, s)) {
+ f->close(s);
+ trans->stream = NULL;
+ ast_log(LOG_WARNING, "Unable to apply stream to channel %s\n", trans->name);
+ close(ret);
+ ret = 0;
+ }
+ } else {
+ close(ret);
+ ast_log(LOG_WARNING, "Unable to open fd on %s\n", filename);
+ }
+ } else
+ ast_log(LOG_WARNING, "Couldn't open file %s\n", fn);
+ }
+ break;
+ default:
+ ast_log(LOG_WARNING, "Unknown helper %d\n", action);
+ }
+ /* Conveniently this logic is the same for all */
+ if (res)
+ break;
+ }
+ free(fn);
+ }
+ ext = strtok(NULL, "|");
+ } while(ext);
+ free(exts);
+ }
+ f = f->next;
+ }
+ pthread_mutex_unlock(&formatlock);
+ if ((action == ACTION_EXISTS) || (action == ACTION_OPEN))
+ res = ret ? ret : -1;
+ return res;
+}
+
+int ast_fileexists(char *filename, char *fmt)
+{
+ return ast_filehelper(filename, NULL, fmt, ACTION_EXISTS);
+}
+
+int ast_filedelete(char *filename, char *fmt)
+{
+ return ast_filehelper(filename, NULL, fmt, ACTION_DELETE);
+}
+
+int ast_filerename(char *filename, char *filename2, char *fmt)
+{
+ return ast_filehelper(filename, filename2, fmt, ACTION_RENAME);
+}
+
+int ast_streamfile(struct ast_channel *chan, char *filename)
+{
+ /* This is a fairly complex routine. Essentially we should do
+ the following:
+
+ 1) Find which file handlers produce our type of format.
+ 2) Look for a filename which it can handle.
+ 3) If we find one, then great.
+ *4) If not, see what files are there
+ *5) See what we can actually support
+ *6) Choose the one with the least costly translator path and
+ set it up.
+
+ XXX * = unimplemented XXX
+ */
+ int fd = -1;
+ struct ast_channel *trans;
+ int fmts;
+ ast_stopstream(chan);
+ fmts = ast_fileexists(filename, NULL);
+ if (fmts < 1) {
+ ast_log(LOG_WARNING, "File %s does not exist in any format\n", filename);
+ return -1;
+ }
+ if (fmts & chan->format) {
+ /* No translation necessary -- we have a file in a format our channel can
+ handle */
+ trans = chan;
+ } else {
+ /* Find the best */
+ fmts = ast_translator_best_choice(chan->format, fmts);
+ if (fmts < 1) {
+ ast_log(LOG_WARNING, "Unable to find a translator method\n");
+ return -1;
+ }
+ trans = ast_translator_create(chan, fmts, AST_DIRECTION_OUT);
+ if (!trans) {
+ ast_log(LOG_WARNING, "Unable to create translator\n");
+ return -1;
+ }
+ }
+ fd = ast_filehelper(filename, (char *)trans, NULL, ACTION_OPEN);
+ if (fd >= 0) {
+#if 0
+ ast_verbose(VERBOSE_PREFIX_3 "Playing '%s'\n", filename);
+#endif
+ return 0;
+ }
+ ast_log(LOG_WARNING, "Unable to open %s (format %d): %s\n", filename, chan->format, strerror(errno));
+ if (chan != trans)
+ ast_translator_destroy(trans);
+ return -1;
+}
+
+
+struct ast_filestream *ast_writefile(char *filename, char *type, char *comment, int flags, int check, mode_t mode)
+{
+ int fd;
+ struct ast_format *f;
+ struct ast_filestream *fs=NULL;
+ char *fn;
+ char *ext;
+ if (pthread_mutex_lock(&formatlock)) {
+ ast_log(LOG_WARNING, "Unable to lock format list\n");
+ return NULL;
+ }
+ f = formats;
+ while(f) {
+ if (!strcasecmp(f->name, type)) {
+ /* XXX Implement check XXX */
+ ext = strdup(f->exts);
+ ext = strtok(ext, "|");
+ fn = build_filename(filename, ext);
+ fd = open(fn, flags | O_WRONLY | O_CREAT, mode);
+ if (fd >= 0) {
+ errno = 0;
+ if ((fs = f->rewrite(fd, comment))) {
+ fs->trans = NULL;
+ fs->fmt = f;
+ } else {
+ ast_log(LOG_WARNING, "Unable to rewrite %s\n", fn);
+ close(fd);
+ unlink(fn);
+ }
+ } else if (errno != EEXIST)
+ ast_log(LOG_WARNING, "Unable to open file %s: %s\n", fn, strerror(errno));
+ free(fn);
+ free(ext);
+ break;
+ }
+ f = f->next;
+ }
+ pthread_mutex_unlock(&formatlock);
+ if (!f)
+ ast_log(LOG_WARNING, "No such format '%s'\n", type);
+ return fs;
+}
+
+char ast_waitstream(struct ast_channel *c, char *breakon)
+{
+ int res;
+ struct ast_frame *fr;
+ if (c->trans)
+ c=c->trans;
+ while(c->stream) {
+ res = ast_sched_wait(c->sched);
+ if (res < 0) {
+ /* Okay, stop :) */
+ return 0;
+ }
+ res = ast_waitfor(c, res);
+ if (res < 0) {
+ ast_log(LOG_WARNING, "Select failed (%s)\n", strerror(errno));
+ return res;
+ } else
+ if (res > 0) {
+ fr = ast_read(c);
+ if (!fr) {
+#if 0
+ ast_log(LOG_DEBUG, "Got hung up\n");
+#endif
+ return -1;
+ }
+
+ switch(fr->frametype) {
+ case AST_FRAME_DTMF:
+ res = fr->subclass;
+ ast_frfree(fr);
+ if (strchr(breakon, res))
+ return res;
+ break;
+ case AST_FRAME_CONTROL:
+ switch(fr->subclass) {
+ case AST_CONTROL_HANGUP:
+ ast_frfree(fr);
+ return -1;
+ default:
+ ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", fr->subclass);
+ }
+ default:
+ /* Ignore */
+ ast_frfree(fr);
+ }
+ } else
+ ast_sched_runq(c->sched);
+
+
+ }
+ return 0;
+}
+