merge new_loader_completion branch, including (at least):

  - restructured build tree and makefiles to eliminate recursion problems
  - support for embedded modules
  - support for static builds
  - simpler cross-compilation support
  - simpler module/loader interface (no exported symbols)



git-svn-id: http://svn.digium.com/svn/asterisk/trunk@40722 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 0 insertions, 1167 deletions

diff --git a/file.c b/file.c
deleted file mode 100644
index 55bacb193..000000000
--- a/file.c
+++ /dev/null
@@ -1,1167 +0,0 @@
-/*
- * Asterisk -- An open source telephony toolkit.
- *
- * Copyright (C) 1999 - 2006, Digium, Inc.
- *
- * Mark Spencer <markster@digium.com>
- *
- * See http://www.asterisk.org for more information about
- * the Asterisk project. Please do not directly contact
- * any of the maintainers of this project for assistance;
- * the project provides a web site, mailing lists and IRC
- * channels for your use.
- *
- * This program is free software, distributed under the terms of
- * the GNU General Public License Version 2. See the LICENSE file
- * at the top of the source tree.
- */
-
-/*! \file
- *
- * \brief Generic File Format Support.
- *
- * \author Mark Spencer <markster@digium.com> 
- */
-
-#include "asterisk.h"
-
-ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
-
-#include <sys/types.h>
-#include <errno.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <dirent.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#include "asterisk/frame.h"
-#include "asterisk/file.h"
-#include "asterisk/cli.h"
-#include "asterisk/logger.h"
-#include "asterisk/channel.h"
-#include "asterisk/sched.h"
-#include "asterisk/options.h"
-#include "asterisk/translate.h"
-#include "asterisk/utils.h"
-#include "asterisk/lock.h"
-#include "asterisk/app.h"
-#include "asterisk/pbx.h"
-#include "asterisk/linkedlists.h"
-#define	MOD_LOADER
-#include "asterisk/module.h"
-
-/*
- * The following variable controls the layout of localized sound files.
- * If 0, use the historical layout with prefix just before the filename
- * (i.e. digits/en/1.gsm , digits/it/1.gsm or default to digits/1.gsm),
- * if 1 put the prefix at the beginning of the filename
- * (i.e. en/digits/1.gsm, it/digits/1.gsm or default to digits/1.gsm).
- * The latter permits a language to be entirely in one directory.
- */
-int ast_language_is_prefix;
-
-static AST_LIST_HEAD_STATIC(formats, ast_format);
-
-int ast_format_register(const struct ast_format *f)
-{
-	struct ast_format *tmp;
-
-	if (f->module == NULL) {
-		ast_log(LOG_WARNING, "Missing module pointer, you need to supply one\n");
-		return -1;
-	}
-	if (AST_LIST_LOCK(&formats)) {
-		ast_log(LOG_WARNING, "Unable to lock format list\n");
-		return -1;
-	}
-	AST_LIST_TRAVERSE(&formats, tmp, list) {
-		if (!strcasecmp(f->name, tmp->name)) {
-			AST_LIST_UNLOCK(&formats);
-			ast_log(LOG_WARNING, "Tried to register '%s' format, already registered\n", f->name);
-			return -1;
-		}
-	}
-	tmp = ast_calloc(1, sizeof(struct ast_format));
-	if (!tmp) {
-		AST_LIST_UNLOCK(&formats);
-		return -1;
-	}
-	*tmp = *f;
-	if (tmp->buf_size) {
-		/*
-		 * Align buf_size properly, rounding up to the machine-specific
-		 * alignment for pointers.
-		 */
-		struct _test_align { void *a, *b; } p;
-		int align = (char *)&p.b - (char *)&p.a;
-		tmp->buf_size = ((f->buf_size + align - 1)/align)*align;
-	}
-	
-	memset(&tmp->list, 0, sizeof(tmp->list));
-
-	AST_LIST_INSERT_HEAD(&formats, tmp, list);
-	AST_LIST_UNLOCK(&formats);
-	if (option_verbose > 1)
-		ast_verbose( VERBOSE_PREFIX_2 "Registered file format %s, extension(s) %s\n", f->name, f->exts);
-	return 0;
-}
-
-int ast_format_unregister(const char *name)
-{
-	struct ast_format *tmp;
-	int res = -1;
-
-	if (AST_LIST_LOCK(&formats)) {
-		ast_log(LOG_WARNING, "Unable to lock format list\n");
-		return -1;
-	}
-	AST_LIST_TRAVERSE_SAFE_BEGIN(&formats, tmp, list) {
-		if (!strcasecmp(name, tmp->name)) {
-			AST_LIST_REMOVE_CURRENT(&formats, list);
-			free(tmp);
-			res = 0;
-		}
-	}
-	AST_LIST_TRAVERSE_SAFE_END
-	AST_LIST_UNLOCK(&formats);
-
-	if (!res) {
-		if (option_verbose > 1)
-			ast_verbose( VERBOSE_PREFIX_2 "Unregistered format %s\n", name);
-	} else
-		ast_log(LOG_WARNING, "Tried to unregister format %s, already unregistered\n", name);
-
-	return res;
-}
-
-int ast_stopstream(struct ast_channel *tmp)
-{
-	/* Stop a running stream if there is one */
-	if (tmp->stream) {
-		ast_closestream(tmp->stream);
-		tmp->stream = NULL;
-		if (tmp->oldwriteformat && ast_set_write_format(tmp, tmp->oldwriteformat))
-			ast_log(LOG_WARNING, "Unable to restore format back to %d\n", tmp->oldwriteformat);
-	}
-	return 0;
-}
-
-int ast_writestream(struct ast_filestream *fs, struct ast_frame *f)
-{
-	int res = -1;
-	int alt = 0;
-	if (f->frametype == AST_FRAME_VIDEO) {
-		if (fs->fmt->format < AST_FORMAT_MAX_AUDIO) {
-			/* This is the audio portion.  Call the video one... */
-			if (!fs->vfs && fs->filename) {
-				const char *type = ast_getformatname(f->subclass & ~0x1);
-				fs->vfs = ast_writefile(fs->filename, type, NULL, fs->flags, 0, fs->mode);
-				ast_log(LOG_DEBUG, "Opened video output file\n");
-			}
-			if (fs->vfs)
-				return ast_writestream(fs->vfs, f);
-			/* else ignore */
-			return 0;				
-		} else {
-			/* Might / might not have mark set */
-			alt = 1;
-		}
-	} else if (f->frametype != AST_FRAME_VOICE) {
-		ast_log(LOG_WARNING, "Tried to write non-voice frame\n");
-		return -1;
-	}
-	if (((fs->fmt->format | alt) & f->subclass) == f->subclass) {
-		res =  fs->fmt->write(fs, f);
-		if (res < 0) 
-			ast_log(LOG_WARNING, "Natural write failed\n");
-		else if (res > 0)
-			ast_log(LOG_WARNING, "Huh??\n");
-	} 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 && f->subclass != fs->lastwriteformat) {
-			ast_translator_free_path(fs->trans);
-			fs->trans = NULL;
-		}
-		if (!fs->trans) 
-			fs->trans = ast_translator_build_path(fs->fmt->format, f->subclass);
-		if (!fs->trans)
-			ast_log(LOG_WARNING, "Unable to translate to format %s, source format %s\n",
-				fs->fmt->name, ast_getformatname(f->subclass));
-		else {
-			struct ast_frame *trf;
-			fs->lastwriteformat = f->subclass;
-			/* Get the translated frame but don't consume the original in case they're using it on another stream */
-			trf = ast_translate(fs->trans, f, 0);
-			if (trf) {
-				res = fs->fmt->write(fs, trf);
-				if (res) 
-					ast_log(LOG_WARNING, "Translated frame write failed\n");
-			} else
-				res = 0;
-		}
-	}
-	return res;
-}
-
-static int copy(const char *infile, const char *outfile)
-{
-	int ifd, ofd, len;
-	char buf[4096];	/* XXX make it lerger. */
-
-	if ((ifd = open(infile, O_RDONLY)) < 0) {
-		ast_log(LOG_WARNING, "Unable to open %s in read-only mode\n", infile);
-		return -1;
-	}
-	if ((ofd = open(outfile, O_WRONLY | O_TRUNC | O_CREAT, 0600)) < 0) {
-		ast_log(LOG_WARNING, "Unable to open %s in write-only mode\n", outfile);
-		close(ifd);
-		return -1;
-	}
-	while ( (len = read(ifd, buf, sizeof(buf)) ) ) {
-		int res;
-		if (len < 0) {
-			ast_log(LOG_WARNING, "Read failed on %s: %s\n", infile, strerror(errno));
-			break;
-		}
-		/* XXX handle partial writes */
-		res = write(ofd, buf, len);
-		if (res != len) {
-			ast_log(LOG_WARNING, "Write failed on %s (%d of %d): %s\n", outfile, res, len, strerror(errno));
-			len = -1; /* error marker */
-			break;
-		}
-	}
-	close(ifd);
-	close(ofd);
-	if (len < 0) {
-		unlink(outfile);
-		return -1; /* error */
-	}
-	return 0;	/* success */
-}
-
-/*!
- * \brief construct a filename. Absolute pathnames are preserved,
- * relative names are prefixed by the sounds/ directory.
- * The wav49 suffix is replaced by 'WAV'.
- * Returns a malloc'ed string to be freed by the caller.
- */
-static char *build_filename(const char *filename, const char *ext)
-{
-	char *fn = NULL;
-
-	if (!strcmp(ext, "wav49"))
-		ext = "WAV";
-
-	if (filename[0] == '/')
-		asprintf(&fn, "%s.%s", filename, ext);
-	else
-		asprintf(&fn, "%s/sounds/%s.%s",
-			ast_config_AST_DATA_DIR, filename, ext);
-	return fn;
-}
-
-/* compare type against the list 'exts' */
-/* XXX need a better algorithm */
-static int exts_compare(const char *exts, const char *type)
-{
-	char tmp[256];
-	char *stringp = tmp, *ext;
-
-	ast_copy_string(tmp, exts, sizeof(tmp));
-	while ((ext = strsep(&stringp, "|"))) {
-		if (!strcmp(ext, type))
-			return 1;
-	}
-
-	return 0;
-}
-
-static struct ast_filestream *get_filestream(struct ast_format *fmt, FILE *bfile)
-{
-	struct ast_filestream *s;
-
-	int l = sizeof(*s) + fmt->buf_size + fmt->desc_size;	/* total allocation size */
-	if ( (s = ast_calloc(1, l)) == NULL)
-		return NULL;
-	s->fmt = fmt;
-	s->f = bfile;
-
-	if (fmt->desc_size)
-		s->private = ((char *)(s+1)) + fmt->buf_size;
-	if (fmt->buf_size)
-		s->buf = (char *)(s+1);
-	s->fr.src = fmt->name;
-	return s;
-}
-
-/*
- * Default implementations of open and rewrite.
- * Only use them if you don't have expensive stuff to do.
- */
-enum wrap_fn { WRAP_OPEN, WRAP_REWRITE };
-
-static int fn_wrapper(struct ast_filestream *s, const char *comment, enum wrap_fn mode)
-{
-	struct ast_format *f = s->fmt;
-	int ret = -1;
-
-	if (mode == WRAP_OPEN && f->open && f->open(s))
-                ast_log(LOG_WARNING, "Unable to open format %s\n", f->name);
-	else if (mode == WRAP_REWRITE && f->rewrite && f->rewrite(s, comment))
-                ast_log(LOG_WARNING, "Unable to rewrite format %s\n", f->name);
-	else {
-		/* preliminary checks succeed. update usecount */
-		ast_atomic_fetchadd_int(&f->module->usecnt, +1);
-		ret = 0;
-		ast_update_use_count();
-	}
-        return ret;
-}
-
-static int rewrite_wrapper(struct ast_filestream *s, const char *comment)
-{
-	return fn_wrapper(s, comment, WRAP_REWRITE);
-}
-                
-static int open_wrapper(struct ast_filestream *s)
-{
-	return fn_wrapper(s, NULL, WRAP_OPEN);
-}
-
-enum file_action {
-	ACTION_EXISTS = 1, /* return matching format if file exists, 0 otherwise */
-	ACTION_DELETE,	/* delete file, return 0 on success, -1 on error */
-	ACTION_RENAME,	/* rename file. return 0 on success, -1 on error */
-	ACTION_OPEN,
-	ACTION_COPY	/* copy file. return 0 on success, -1 on error */
-};
-
-/*!
- * \brief perform various actions on a file. Second argument
- * arg2 depends on the command:
- *	unused for EXISTS and DELETE
- *	destination file name (const char *) for COPY and RENAME
- * 	struct ast_channel * for OPEN
- * if fmt is NULL, OPEN will return the first matching entry,
- * whereas other functions will run on all matching entries.
- */
-static int ast_filehelper(const char *filename, const void *arg2, const char *fmt, const enum file_action action)
-{
-	struct ast_format *f;
-	int res = (action == ACTION_EXISTS) ? 0 : -1;
-
-	if (AST_LIST_LOCK(&formats)) {
-		ast_log(LOG_WARNING, "Unable to lock format list\n");
-		return res;
-	}
-	/* Check for a specific format */
-	AST_LIST_TRAVERSE(&formats, f, list) {
-		char *stringp, *ext = NULL;
-
-		if (fmt && !exts_compare(f->exts, fmt))
-			continue;
-
-		/* Look for a file matching the supported extensions.
-		 * The file must exist, and for OPEN, must match
-		 * one of the formats supported by the channel.
-		 */
-		stringp = ast_strdupa(f->exts);	/* this is in the stack so does not need to be freed */
-		while ( (ext = strsep(&stringp, "|")) ) {
-			struct stat st;
-			char *fn = build_filename(filename, ext);
-
-			if (fn == NULL)
-				continue;
-
-			if ( stat(fn, &st) ) { /* file not existent */
-				free(fn);
-				continue;
-			}
-			/* for 'OPEN' we need to be sure that the format matches
-			 * what the channel can process
-			 */
-			if (action == ACTION_OPEN) {
-				struct ast_channel *chan = (struct ast_channel *)arg2;
-				FILE *bfile;
-				struct ast_filestream *s;
-
-				if ( !(chan->writeformat & f->format) &&
-				     !(f->format >= AST_FORMAT_MAX_AUDIO && fmt)) {
-					free(fn);
-					continue;	/* not a supported format */
-				}
-				if ( (bfile = fopen(fn, "r")) == NULL) {
-					free(fn);
-					continue;	/* cannot open file */
-				}
-				s = get_filestream(f, bfile);
-				if (!s) {
-					fclose(bfile);
-					free(fn);	/* cannot allocate descriptor */
-					continue;
-				}
-				if (open_wrapper(s)) {
-					fclose(bfile);
-					free(fn);
-					free(s);
-					continue;	/* cannot run open on file */
-				}
-				/* ok this is good for OPEN */
-				res = 1;	/* found */
-				s->lasttimeout = -1;
-				s->fmt = f;
-				s->trans = NULL;
-				s->filename = NULL;
-				if (s->fmt->format < AST_FORMAT_MAX_AUDIO)
-					chan->stream = s;
-				else
-					chan->vstream = s;
-				break;
-			}
-			switch (action) {
-			case ACTION_OPEN:
-				break;	/* will never get here */
-
-			case ACTION_EXISTS:	/* return the matching format */
-				res |= f->format;
-				break;
-
-			case ACTION_DELETE:
-				if ( (res = unlink(fn)) )
-					ast_log(LOG_WARNING, "unlink(%s) failed: %s\n", fn, strerror(errno));
-				break;
-
-			case ACTION_RENAME:
-			case ACTION_COPY: {
-				char *nfn = build_filename((const char *)arg2, ext);
-				if (!nfn)
-					ast_log(LOG_WARNING, "Out of memory\n");
-				else {
-					res = action == ACTION_COPY ? copy(fn, nfn) : rename(fn, nfn);
-					if (res)
-						ast_log(LOG_WARNING, "%s(%s,%s) failed: %s\n",
-							action == ACTION_COPY ? "copy" : "rename",
-							 fn, nfn, strerror(errno));
-					free(nfn);
-				}
-			    }
-				break;
-
-			default:
-				ast_log(LOG_WARNING, "Unknown helper %d\n", action);
-			}
-			free(fn);
-		}
-	}
-	AST_LIST_UNLOCK(&formats);
-	return res;
-}
-
-/*!
- * \brief helper routine to locate a file with a given format
- * and language preference.
- * Try preflang, preflang with stripped '_' suffix, or NULL.
- * In the standard asterisk, language goes just before the last component.
- * In an alternative configuration, the language should be a prefix
- * to the actual filename.
- *
- * The last parameter(s) point to a buffer of sufficient size,
- * which on success is filled with the matching filename.
- */
-static int fileexists_core(const char *filename, const char *fmt, const char *preflang,
-		char *buf, int buflen)
-{
-	int res = -1;
-	int langlen;	/* length of language string */
-	const char *c = strrchr(filename, '/');
-	int offset = c ? c - filename + 1 : 0;	/* points right after the last '/' */
-
-	if (preflang == NULL)
-		preflang = "";
-	langlen = strlen(preflang);
-	
-	if (buflen < langlen + strlen(filename) + 2) {
-		ast_log(LOG_WARNING, "buffer too small\n");
-		buf[0] = '\0'; /* set to empty */
-		buf = alloca(langlen + strlen(filename) + 2);	/* room for everything */
-	}
-	if (buf == NULL)
-		return 0;
-	buf[0] = '\0';
-	for (;;) {
-		if (ast_language_is_prefix) { /* new layout */
-			if (langlen) {
-				strcpy(buf, preflang);
-				buf[langlen] = '/';
-				strcpy(buf + langlen + 1, filename);
-			} else
-				strcpy(buf, filename);	/* first copy the full string */
-		} else { /* old layout */
-			strcpy(buf, filename);	/* first copy the full string */
-			if (langlen) {
-				/* insert the language and suffix if needed */
-				strcpy(buf + offset, preflang);
-				sprintf(buf + offset + langlen, "/%s", filename + offset);
-			}
-		}
-		res = ast_filehelper(buf, NULL, fmt, ACTION_EXISTS);
-		if (res > 0)		/* found format */
-			break;
-		if (langlen == 0)	/* no more formats */
-			break;
-		if (preflang[langlen] == '_') /* we are on the local suffix */
-			langlen = 0;	/* try again with no language */
-		else
-			langlen = (c = strchr(preflang, '_')) ? c - preflang : 0;
-	}
-	return res;
-}
-
-struct ast_filestream *ast_openstream(struct ast_channel *chan, const char *filename, const char *preflang)
-{
-	return ast_openstream_full(chan, filename, preflang, 0);
-}
-
-struct ast_filestream *ast_openstream_full(struct ast_channel *chan, const char *filename, const char *preflang, int asis)
-{
-	/* 
-	 * Use fileexists_core() to find a file in a compatible
-	 * language and format, set up a suitable translator,
-	 * and open the stream.
-	 */
-	int fmts, res, buflen;
-	char *buf;
-
-	if (!asis) {
-		/* do this first, otherwise we detect the wrong writeformat */
-		ast_stopstream(chan);
-		if (chan->generator)
-			ast_deactivate_generator(chan);
-	}
-	if (preflang == NULL)
-		preflang = "";
-	buflen = strlen(preflang) + strlen(filename) + 2;
-	buf = alloca(buflen);
-	if (buf == NULL)
-		return NULL;
-	fmts = fileexists_core(filename, NULL, preflang, buf, buflen);
-	if (fmts > 0)
-		fmts &= AST_FORMAT_AUDIO_MASK;
-	if (fmts < 1) {
-		ast_log(LOG_WARNING, "File %s does not exist in any format\n", filename);
-		return NULL;
-	}
-	chan->oldwriteformat = chan->writeformat;
-	/* Set the channel to a format we can work with */
-	res = ast_set_write_format(chan, fmts);
- 	res = ast_filehelper(buf, chan, NULL, ACTION_OPEN);
-	if (res >= 0)
-		return chan->stream;
-	return NULL;
-}
-
-struct ast_filestream *ast_openvstream(struct ast_channel *chan, const char *filename, const char *preflang)
-{
-	/* As above, but for video. But here we don't have translators
-	 * so we must enforce a format.
-	 */
-	unsigned int format;
-	char *buf;
-	int buflen;
-
-	if (preflang == NULL)
-		preflang = "";
-	buflen = strlen(preflang) + strlen(filename) + 2;
-	buf = alloca(buflen);
-	if (buf == NULL)
-		return NULL;
-
-	for (format = AST_FORMAT_MAX_AUDIO << 1; format <= AST_FORMAT_MAX_VIDEO; format = format << 1) {
-		int fd;
-		const char *fmt;
-
-		if (!(chan->nativeformats & format))
-			continue;
-		fmt = ast_getformatname(format);
-		if ( fileexists_core(filename, fmt, preflang, buf, buflen) < 1)	/* no valid format */
-			continue;
-	 	fd = ast_filehelper(buf, chan, fmt, ACTION_OPEN);
-		if (fd >= 0)
-			return chan->vstream;
-		ast_log(LOG_WARNING, "File %s has video but couldn't be opened\n", filename);
-	}
-	return NULL;
-}
-
-struct ast_frame *ast_readframe(struct ast_filestream *s)
-{
-	struct ast_frame *f = NULL;
-	int whennext = 0;	
-	if (s && s->fmt)
-		f = s->fmt->read(s, &whennext);
-	return f;
-}
-
-static int ast_readaudio_callback(void *data)
-{
-	struct ast_filestream *s = data;
-	int whennext = 0;
-
-	while(!whennext) {
-		struct ast_frame *fr = s->fmt->read(s, &whennext);
-		if (!fr /* stream complete */ || ast_write(s->owner, fr) /* error writing */) {
-			if (fr)
-				ast_log(LOG_WARNING, "Failed to write frame\n");
-			s->owner->streamid = -1;
-#ifdef HAVE_ZAPTEL
-			ast_settimeout(s->owner, 0, NULL, NULL);
-#endif			
-			return 0;
-		}
-	}
-	if (whennext != s->lasttimeout) {
-#ifdef HAVE_ZAPTEL
-		if (s->owner->timingfd > -1)
-			ast_settimeout(s->owner, whennext, ast_readaudio_callback, s);
-		else
-#endif		
-			s->owner->streamid = ast_sched_add(s->owner->sched, whennext/8, ast_readaudio_callback, s);
-		s->lasttimeout = whennext;
-		return 0;
-	}
-	return 1;
-}
-
-static int ast_readvideo_callback(void *data)
-{
-	struct ast_filestream *s = data;
-	int whennext = 0;
-
-	while (!whennext) {
-		struct ast_frame *fr = s->fmt->read(s, &whennext);
-		if (!fr || ast_write(s->owner, fr)) { /* no stream or error, as above */
-			if (fr)
-				ast_log(LOG_WARNING, "Failed to write frame\n");
-			s->owner->vstreamid = -1;
-			return 0;
-		}
-	}
-	if (whennext != s->lasttimeout) {
-		s->owner->vstreamid = ast_sched_add(s->owner->sched, whennext/8, ast_readvideo_callback, s);
-		s->lasttimeout = whennext;
-		return 0;
-	}
-	return 1;
-}
-
-int ast_applystream(struct ast_channel *chan, struct ast_filestream *s)
-{
-	s->owner = chan;
-	return 0;
-}
-
-int ast_playstream(struct ast_filestream *s)
-{
-	if (s->fmt->format < AST_FORMAT_MAX_AUDIO)
-		ast_readaudio_callback(s);
-	else
-		ast_readvideo_callback(s);
-	return 0;
-}
-
-int ast_seekstream(struct ast_filestream *fs, off_t sample_offset, int whence)
-{
-	return fs->fmt->seek(fs, sample_offset, whence);
-}
-
-int ast_truncstream(struct ast_filestream *fs)
-{
-	return fs->fmt->trunc(fs);
-}
-
-off_t ast_tellstream(struct ast_filestream *fs)
-{
-	return fs->fmt->tell(fs);
-}
-
-int ast_stream_fastforward(struct ast_filestream *fs, off_t ms)
-{
-	return ast_seekstream(fs, ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
-}
-
-int ast_stream_rewind(struct ast_filestream *fs, off_t ms)
-{
-	return ast_seekstream(fs, -ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
-}
-
-int ast_closestream(struct ast_filestream *f)
-{
-	char *cmd = NULL;
-	size_t size = 0;
-	/* Stop a running stream if there is one */
-	if (f->owner) {
-		if (f->fmt->format < AST_FORMAT_MAX_AUDIO) {
-			f->owner->stream = NULL;
-			if (f->owner->streamid > -1)
-				ast_sched_del(f->owner->sched, f->owner->streamid);
-			f->owner->streamid = -1;
-#ifdef HAVE_ZAPTEL
-			ast_settimeout(f->owner, 0, NULL, NULL);
-#endif			
-		} else {
-			f->owner->vstream = NULL;
-			if (f->owner->vstreamid > -1)
-				ast_sched_del(f->owner->sched, f->owner->vstreamid);
-			f->owner->vstreamid = -1;
-		}
-	}
-	/* destroy the translator on exit */
-	if (f->trans)
-		ast_translator_free_path(f->trans);
-
-	if (f->realfilename && f->filename) {
-			size = strlen(f->filename) + strlen(f->realfilename) + 15;
-			cmd = alloca(size);
-			memset(cmd,0,size);
-			snprintf(cmd,size,"/bin/mv -f %s %s",f->filename,f->realfilename);
-			ast_safe_system(cmd);
-	}
-
-	if (f->filename)
-		free(f->filename);
-	if (f->realfilename)
-		free(f->realfilename);
-	if (f->fmt->close)
-		f->fmt->close(f);
-	fclose(f->f);
-	if (f->vfs)
-		ast_closestream(f->vfs);
-	ast_atomic_fetchadd_int(&f->fmt->module->usecnt, -1);
-	ast_update_use_count();
-	free(f);
-	return 0;
-}
-
-
-/*
- * Look the various language-specific places where a file could exist.
- */
-int ast_fileexists(const char *filename, const char *fmt, const char *preflang)
-{
-	char *buf;
-	int buflen;
-
-	if (preflang == NULL)
-		preflang = "";
-	buflen = strlen(preflang) + strlen(filename) + 2;	/* room for everything */
-	buf = alloca(buflen);
-	if (buf == NULL)
-		return 0;
-	return fileexists_core(filename, fmt, preflang, buf, buflen);
-}
-
-int ast_filedelete(const char *filename, const char *fmt)
-{
-	return ast_filehelper(filename, NULL, fmt, ACTION_DELETE);
-}
-
-int ast_filerename(const char *filename, const char *filename2, const char *fmt)
-{
-	return ast_filehelper(filename, filename2, fmt, ACTION_RENAME);
-}
-
-int ast_filecopy(const char *filename, const char *filename2, const char *fmt)
-{
-	return ast_filehelper(filename, filename2, fmt, ACTION_COPY);
-}
-
-int ast_streamfile(struct ast_channel *chan, const char *filename, const char *preflang)
-{
-	struct ast_filestream *fs;
-	struct ast_filestream *vfs=NULL;
-	char fmt[256];
-
-	fs = ast_openstream(chan, filename, preflang);
-	if (fs)
-		vfs = ast_openvstream(chan, filename, preflang);
-	if (vfs)
-		ast_log(LOG_DEBUG, "Ooh, found a video stream, too, format %s\n", ast_getformatname(vfs->fmt->format));
-	if (fs){
-		if (ast_applystream(chan, fs))
-			return -1;
-		if (vfs && ast_applystream(chan, vfs))
-			return -1;
-		if (ast_playstream(fs))
-			return -1;
-		if (vfs && ast_playstream(vfs))
-			return -1;
-#if 1
-		if (option_verbose > 2)
-			ast_verbose(VERBOSE_PREFIX_3 "Playing '%s' (language '%s')\n", filename, preflang ? preflang : "default");
-#endif
-		return 0;
-	}
-	ast_log(LOG_WARNING, "Unable to open %s (format %s): %s\n", filename, ast_getformatname_multiple(fmt, sizeof(fmt), chan->nativeformats), strerror(errno));
-	return -1;
-}
-
-struct ast_filestream *ast_readfile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
-{
-	FILE *bfile;
-	struct ast_format *f;
-	struct ast_filestream *fs = NULL;
-	char *fn;
-
-	if (AST_LIST_LOCK(&formats)) {
-		ast_log(LOG_WARNING, "Unable to lock format list\n");
-		return NULL;
-	}
-
-	AST_LIST_TRAVERSE(&formats, f, list) {
-		fs = NULL;
-		if (!exts_compare(f->exts, type))
-			continue;
-
-		fn = build_filename(filename, type);
-		errno = 0;
-		bfile = fopen(fn, "r");
-		if (!bfile || (fs = get_filestream(f, bfile)) == NULL ||
-			open_wrapper(fs) ) {
-			ast_log(LOG_WARNING, "Unable to open %s\n", fn);
-			fclose(bfile);
-			free(fn);
-			if (fs)
-				free(fs);
-			continue;
-		}
-		/* found it */
-		fs->trans = NULL;
-		fs->fmt = f;
-		fs->flags = flags;
-		fs->mode = mode;
-		fs->filename = strdup(filename);
-		fs->vfs = NULL;
-		break;
-	}
-
-	AST_LIST_UNLOCK(&formats);
-	if (!fs) 
-		ast_log(LOG_WARNING, "No such format '%s'\n", type);
-
-	return fs;
-}
-
-struct ast_filestream *ast_writefile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
-{
-	int fd, myflags = 0;
-	/* compiler claims this variable can be used before initialization... */
-	FILE *bfile = NULL;
-	struct ast_format *f;
-	struct ast_filestream *fs = NULL;
-	char *buf = NULL;
-	size_t size = 0;
-	int format_found = 0;
-
-	if (AST_LIST_LOCK(&formats)) {
-		ast_log(LOG_WARNING, "Unable to lock format list\n");
-		return NULL;
-	}
-
-	/* set the O_TRUNC flag if and only if there is no O_APPEND specified */
-	/* We really can't use O_APPEND as it will break WAV header updates */
-	if (flags & O_APPEND) { 
-		flags &= ~O_APPEND;
-	} else {
-		myflags = O_TRUNC;
-	}
-	
-	myflags |= O_WRONLY | O_CREAT;
-
-	/* XXX need to fix this - we should just do the fopen,
-	 * not open followed by fdopen()
-	 */
-	AST_LIST_TRAVERSE(&formats, f, list) {
-		char *fn, *orig_fn = NULL;
-		if (fs)
-			break;
-
-		if (!exts_compare(f->exts, type))
-			continue;
-		else
-			format_found = 1;
-
-		fn = build_filename(filename, type);
-		fd = open(fn, flags | myflags, mode);
-		if (fd > -1) {
-			/* fdopen() the resulting file stream */
-			bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
-			if (!bfile) {
-				ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
-				close(fd);
-				fd = -1;
-			}
-		}
-		
-		if (ast_opt_cache_record_files && (fd > -1)) {
-			char *c;
-
-			fclose(bfile);	/* this also closes fd */
-			/*
-			  We touch orig_fn just as a place-holder so other things (like vmail) see the file is there.
-			  What we are really doing is writing to record_cache_dir until we are done then we will mv the file into place.
-			*/
-			orig_fn = ast_strdupa(fn);
-			for (c = fn; *c; c++)
-				if (*c == '/')
-					*c = '_';
-
-			size = strlen(fn) + strlen(record_cache_dir) + 2;
-			buf = alloca(size);
-			strcpy(buf, record_cache_dir);
-			strcat(buf, "/");
-			strcat(buf, fn);
-			free(fn);
-			fn = buf;
-			fd = open(fn, flags | myflags, mode);
-			if (fd > -1) {
-				/* fdopen() the resulting file stream */
-				bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
-				if (!bfile) {
-					ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
-					close(fd);
-					fd = -1;
-				}
-			}
-		}
-		if (fd > -1) {
-			errno = 0;
-			fs = get_filestream(f, bfile);
-			if (!fs || rewrite_wrapper(fs, comment)) {
-				ast_log(LOG_WARNING, "Unable to rewrite %s\n", fn);
-				close(fd);
-				if (orig_fn) {
-					unlink(fn);
-					unlink(orig_fn);
-				}
-				if (fs)
-					free(fs);
-			}
-			fs->trans = NULL;
-			fs->fmt = f;
-			fs->flags = flags;
-			fs->mode = mode;
-			if (orig_fn) {
-				fs->realfilename = strdup(orig_fn);
-				fs->filename = strdup(fn);
-			} else {
-				fs->realfilename = NULL;
-				fs->filename = strdup(filename);
-			}
-			fs->vfs = NULL;
-			/* If truncated, we'll be at the beginning; if not truncated, then append */
-			f->seek(fs, 0, SEEK_END);
-		} else if (errno != EEXIST) {
-			ast_log(LOG_WARNING, "Unable to open file %s: %s\n", fn, strerror(errno));
-			if (orig_fn)
-				unlink(orig_fn);
-		}
-		/* if buf != NULL then fn is already free and pointing to it */
-		if (!buf)
-			free(fn);
-	}
-
-	AST_LIST_UNLOCK(&formats);
-
-	if (!format_found)
-		ast_log(LOG_WARNING, "No such format '%s'\n", type);
-
-	return fs;
-}
-
-/*!
- * \brief the core of all waitstream() functions
- */
-static int waitstream_core(struct ast_channel *c, const char *breakon,
-	const char *forward, const char *rewind, int skip_ms,
-	int audiofd, int cmdfd,  const char *context)
-{
-	if (!breakon)
-		breakon = "";
-	if (!forward)
-		forward = "";
-	if (!rewind)
-		rewind = "";
-	
-	while (c->stream) {
-		int res;
-		int ms = ast_sched_wait(c->sched);
-		if (ms < 0 && !c->timingfunc) {
-			ast_stopstream(c);
-			break;
-		}
-		if (ms < 0)
-			ms = 1000;
-		if (!cmdfd) {
-			res = ast_waitfor(c, ms);
-			if (res < 0) {
-				ast_log(LOG_WARNING, "Select failed (%s)\n", strerror(errno));
-				return res;
-			}
-		} else {
-			int outfd;
-			struct ast_channel *rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms);
-			if (!rchan && (outfd < 0) && (ms)) {
-				/* Continue */
-				if (errno == EINTR)
-					continue;
-				ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno));
-				return -1;
-			} else if (outfd > -1) { /* this requires cmdfd set */
-				/* The FD we were watching has something waiting */
-				return 1;
-			}
-			/* if rchan is set, it is 'c' */
-			res = rchan ? 1 : 0; /* map into 'res' values */
-		}
-		if (res > 0) {
-			struct ast_frame *fr = ast_read(c);
-			if (!fr)
-				return -1;
-			switch(fr->frametype) {
-			case AST_FRAME_DTMF:
-				if (context) {
-					const char exten[2] = { fr->subclass, '\0' };
-					if (ast_exists_extension(c, context, exten, 1, c->cid.cid_num)) {
-						ast_frfree(fr);
-						return res;
-					}
-				} else {
-					res = fr->subclass;
-					if (strchr(forward,res)) {
-						ast_stream_fastforward(c->stream, skip_ms);
-					} else if (strchr(rewind,res)) {
-						ast_stream_rewind(c->stream, skip_ms);
-					} else if (strchr(breakon, res)) {
-						ast_frfree(fr);
-						return res;
-					}					
-				}
-				break;
-			case AST_FRAME_CONTROL:
-				switch(fr->subclass) {
-				case AST_CONTROL_HANGUP:
-					ast_frfree(fr);
-					return -1;
-				case AST_CONTROL_RINGING:
-				case AST_CONTROL_ANSWER:
-				case AST_CONTROL_VIDUPDATE:
-					/* Unimportant */
-					break;
-				default:
-					ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", fr->subclass);
-				}
-			case AST_FRAME_VOICE:
-				/* Write audio if appropriate */
-				if (audiofd > -1)
-					write(audiofd, fr->data, fr->datalen);
-			}
-			/* Ignore all others */
-			ast_frfree(fr);
-		}
-		ast_sched_runq(c->sched);
-	}
-	return (c->_softhangup ? -1 : 0);
-}
-
-int ast_waitstream_fr(struct ast_channel *c, const char *breakon, const char *forward, const char *rewind, int ms)
-{
-	return waitstream_core(c, breakon, forward, rewind, ms,
-		-1 /* no audiofd */, -1 /* no cmdfd */, NULL /* no context */);
-}
-
-int ast_waitstream(struct ast_channel *c, const char *breakon)
-{
-	return waitstream_core(c, breakon, NULL, NULL, 0, -1, -1, NULL);
-}
-
-int ast_waitstream_full(struct ast_channel *c, const char *breakon, int audiofd, int cmdfd)
-{
-	return waitstream_core(c, breakon, NULL, NULL, 0,
-		audiofd, cmdfd, NULL /* no context */);
-}
-
-int ast_waitstream_exten(struct ast_channel *c, const char *context)
-{
-	/* Waitstream, with return in the case of a valid 1 digit extension */
-	/* in the current or specified context being pressed */
-
-	if (!context)
-		context = c->context;
-	return waitstream_core(c, NULL, NULL, NULL, 0,
-		-1, -1, context);
-}
-
-/*
- * if the file name is non-empty, try to play it.
- * Return 0 if success, -1 if error, digit if interrupted by a digit.
- * If digits == "" then we can simply check for non-zero.
- */
-int ast_stream_and_wait(struct ast_channel *chan, const char *file,
-	const char *language, const char *digits)
-{
-        int res = 0;
-        if (!ast_strlen_zero(file)) {
-                res =  ast_streamfile(chan, file, language);
-                if (!res)
-                        res = ast_waitstream(chan, digits);
-        }
-        return res;
-} 
-
-static int show_file_formats(int fd, int argc, char *argv[])
-{
-#define FORMAT "%-10s %-10s %-20s\n"
-#define FORMAT2 "%-10s %-10s %-20s\n"
-	struct ast_format *f;
-	int count_fmt = 0;
-
-	if (argc != 3)
-		return RESULT_SHOWUSAGE;
-	ast_cli(fd, FORMAT, "Format", "Name", "Extensions");
-	        
-	if (AST_LIST_LOCK(&formats)) {
-		ast_log(LOG_WARNING, "Unable to lock format list\n");
-		return -1;
-	}
-
-	AST_LIST_TRAVERSE(&formats, f, list) {
-		ast_cli(fd, FORMAT2, ast_getformatname(f->format), f->name, f->exts);
-		count_fmt++;
-	}
-	AST_LIST_UNLOCK(&formats);
-	ast_cli(fd, "%d file formats registered.\n", count_fmt);
-	return RESULT_SUCCESS;
-#undef FORMAT
-#undef FORMAT2
-}
-
-struct ast_cli_entry show_file =
-{
-	{ "show", "file", "formats" },
-	show_file_formats,
-	"Displays file formats",
-	"Usage: show file formats\n"
-	"       displays currently registered file formats (if any)\n"
-};
-
-int ast_file_init(void)
-{
-	ast_cli_register(&show_file);
-	return 0;
-}