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/*
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* Asterisk - - An open source telephony toolkit .
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*
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* Copyright ( C ) 1999 - 2006 , Digium , Inc .
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*
* Mark Spencer < markster @ digium . com >
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*
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* 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 .
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*
* This program is free software , distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree .
*/
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/*! \file
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*
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* \ brief Generic File Format Support .
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*
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* \ author Mark Spencer < markster @ digium . com >
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*/
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/*** MODULEINFO
< support_level > core < / support_level >
* * */
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# include "asterisk.h"
ASTERISK_FILE_VERSION ( __FILE__ , " $Revision$ " )
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# include <dirent.h>
# include <sys/stat.h>
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# include <sys/wait.h>
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# include <math.h>
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# include "asterisk/_private.h" /* declare ast_file_init() */
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# include "asterisk/paths.h" /* use ast_config_AST_DATA_DIR */
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# include "asterisk/mod_format.h"
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# include "asterisk/cli.h"
# include "asterisk/channel.h"
# include "asterisk/sched.h"
# include "asterisk/translate.h"
# include "asterisk/utils.h"
# include "asterisk/lock.h"
# include "asterisk/app.h"
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# include "asterisk/pbx.h"
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# include "asterisk/linkedlists.h"
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# include "asterisk/module.h"
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# include "asterisk/astobj2.h"
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# include "asterisk/test.h"
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# include "asterisk/stasis.h"
# include "asterisk/json.h"
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# include "asterisk/stasis_system.h"
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/*! \brief
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* 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 .
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*
* This is settable in asterisk . conf .
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*/
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int ast_language_is_prefix = 1 ;
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static AST_RWLIST_HEAD_STATIC ( formats , ast_format_def ) ;
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STASIS_MESSAGE_TYPE_DEFN ( ast_format_register_type ) ;
STASIS_MESSAGE_TYPE_DEFN ( ast_format_unregister_type ) ;
static struct ast_json * json_array_from_list ( const char * list , const char * sep )
{
RAII_VAR ( struct ast_json * , array , ast_json_array_create ( ) , ast_json_unref ) ;
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char * stringp , * ext ;
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stringp = ast_strdupa ( list ) ; /* this is in the stack so does not need to be freed */
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if ( ! array | | ! stringp ) {
return NULL ;
}
while ( ( ext = strsep ( & stringp , sep ) ) ) {
if ( ast_json_array_append ( array , ast_json_string_create ( ext ) ) ) {
return NULL ;
}
}
return ast_json_ref ( array ) ;
}
static int publish_format_update ( const struct ast_format_def * f , struct stasis_message_type * type )
{
RAII_VAR ( struct stasis_message * , msg , NULL , ao2_cleanup ) ;
RAII_VAR ( struct ast_json_payload * , json_payload , NULL , ao2_cleanup ) ;
RAII_VAR ( struct ast_json * , json_object , NULL , ast_json_unref ) ;
json_object = ast_json_pack ( " {s: s, s: o} " ,
" format " , f - > name ,
" extensions " , json_array_from_list ( f - > exts , " | " ) ) ;
if ( ! json_object ) {
return - 1 ;
}
json_payload = ast_json_payload_create ( json_object ) ;
if ( ! json_payload ) {
return - 1 ;
}
msg = stasis_message_create ( type , json_payload ) ;
if ( ! msg ) {
return - 1 ;
}
stasis_publish ( ast_system_topic ( ) , msg ) ;
return 0 ;
}
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int __ast_format_def_register ( const struct ast_format_def * f , struct ast_module * mod )
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{
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struct ast_format_def * tmp ;
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AST_RWLIST_WRLOCK ( & formats ) ;
AST_RWLIST_TRAVERSE ( & formats , tmp , list ) {
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if ( ! strcasecmp ( f - > name , tmp - > name ) ) {
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AST_RWLIST_UNLOCK ( & formats ) ;
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ast_log ( LOG_WARNING , " Tried to register '%s' format, already registered \n " , f - > name ) ;
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return - 1 ;
}
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}
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if ( ! ( tmp = ast_calloc ( 1 , sizeof ( * tmp ) ) ) ) {
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AST_RWLIST_UNLOCK ( & formats ) ;
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return - 1 ;
}
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* tmp = * f ;
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tmp - > module = mod ;
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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 ;
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tmp - > buf_size = ( ( f - > buf_size + align - 1 ) / align ) * align ;
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}
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memset ( & tmp - > list , 0 , sizeof ( tmp - > list ) ) ;
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AST_RWLIST_INSERT_HEAD ( & formats , tmp , list ) ;
AST_RWLIST_UNLOCK ( & formats ) ;
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ast_verb ( 2 , " Registered file format %s, extension(s) %s \n " , f - > name , f - > exts ) ;
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publish_format_update ( f , ast_format_register_type ( ) ) ;
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return 0 ;
}
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int ast_format_def_unregister ( const char * name )
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{
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struct ast_format_def * tmp ;
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int res = - 1 ;
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AST_RWLIST_WRLOCK ( & formats ) ;
AST_RWLIST_TRAVERSE_SAFE_BEGIN ( & formats , tmp , list ) {
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if ( ! strcasecmp ( name , tmp - > name ) ) {
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AST_RWLIST_REMOVE_CURRENT ( list ) ;
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publish_format_update ( tmp , ast_format_unregister_type ( ) ) ;
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ast_free ( tmp ) ;
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res = 0 ;
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}
}
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AST_RWLIST_TRAVERSE_SAFE_END ;
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AST_RWLIST_UNLOCK ( & formats ) ;
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if ( ! res )
ast_verb ( 2 , " Unregistered format %s \n " , name ) ;
else
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ast_log ( LOG_WARNING , " Tried to unregister format %s, already unregistered \n " , name ) ;
return res ;
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}
int ast_stopstream ( struct ast_channel * tmp )
{
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ast_channel_lock ( tmp ) ;
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/* Stop a running stream if there is one */
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if ( ast_channel_stream ( tmp ) ) {
ast_closestream ( ast_channel_stream ( tmp ) ) ;
ast_channel_stream_set ( tmp , NULL ) ;
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if ( ast_channel_oldwriteformat ( tmp ) - > id & & ast_set_write_format ( tmp , ast_channel_oldwriteformat ( tmp ) ) )
ast_log ( LOG_WARNING , " Unable to restore format back to %s \n " , ast_getformatname ( ast_channel_oldwriteformat ( tmp ) ) ) ;
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}
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/* Stop the video stream too */
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if ( ast_channel_vstream ( tmp ) ! = NULL ) {
ast_closestream ( ast_channel_vstream ( tmp ) ) ;
ast_channel_vstream_set ( tmp , NULL ) ;
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}
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ast_channel_unlock ( tmp ) ;
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return 0 ;
}
int ast_writestream ( struct ast_filestream * fs , struct ast_frame * f )
{
int res = - 1 ;
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if ( f - > frametype = = AST_FRAME_VIDEO ) {
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if ( AST_FORMAT_GET_TYPE ( fs - > fmt - > format . id ) = = AST_FORMAT_TYPE_AUDIO ) {
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/* This is the audio portion. Call the video one... */
if ( ! fs - > vfs & & fs - > filename ) {
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const char * type = ast_getformatname ( & f - > subclass . format ) ;
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fs - > vfs = ast_writefile ( fs - > filename , type , NULL , fs - > flags , 0 , fs - > mode ) ;
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ast_debug ( 1 , " Opened video output file \n " ) ;
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}
if ( fs - > vfs )
return ast_writestream ( fs - > vfs , f ) ;
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/* else ignore */
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return 0 ;
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}
} else if ( f - > frametype ! = AST_FRAME_VOICE ) {
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ast_log ( LOG_WARNING , " Tried to write non-voice frame \n " ) ;
return - 1 ;
}
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if ( ast_format_cmp ( & f - > subclass . format , & fs - > fmt - > format ) ! = AST_FORMAT_CMP_NOT_EQUAL ) {
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res = fs - > fmt - > write ( fs , f ) ;
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if ( res < 0 )
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ast_log ( LOG_WARNING , " Natural write failed \n " ) ;
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else if ( res > 0 )
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ast_log ( LOG_WARNING , " Huh?? \n " ) ;
} else {
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/* 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 */
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if ( fs - > trans & & ( ast_format_cmp ( & f - > subclass . format , & fs - > lastwriteformat ) ! = AST_FORMAT_CMP_EQUAL ) ) {
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ast_translator_free_path ( fs - > trans ) ;
fs - > trans = NULL ;
}
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if ( ! fs - > trans )
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fs - > trans = ast_translator_build_path ( & fs - > fmt - > format , & f - > subclass . format ) ;
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if ( ! fs - > trans )
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ast_log ( LOG_WARNING , " Unable to translate to format %s, source format %s \n " ,
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fs - > fmt - > name , ast_getformatname ( & f - > subclass . format ) ) ;
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else {
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struct ast_frame * trf ;
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ast_format_copy ( & fs - > lastwriteformat , & f - > subclass . format ) ;
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/* Get the translated frame but don't consume the original in case they're using it on another stream */
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if ( ( trf = ast_translate ( fs - > trans , f , 0 ) ) ) {
struct ast_frame * cur ;
/* the translator may have returned multiple frames, so process them */
for ( cur = trf ; cur ; cur = AST_LIST_NEXT ( cur , frame_list ) ) {
if ( ( res = fs - > fmt - > write ( fs , trf ) ) ) {
ast_log ( LOG_WARNING , " Translated frame write failed \n " ) ;
break ;
}
}
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ast_frfree ( trf ) ;
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} else {
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res = 0 ;
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}
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}
}
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return res ;
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}
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static int copy ( const char * infile , const char * outfile )
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{
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int ifd , ofd , len ;
char buf [ 4096 ] ; /* XXX make it lerger. */
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if ( ( ifd = open ( infile , O_RDONLY ) ) < 0 ) {
ast_log ( LOG_WARNING , " Unable to open %s in read-only mode \n " , infile ) ;
return - 1 ;
}
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if ( ( ofd = open ( outfile , O_WRONLY | O_TRUNC | O_CREAT , AST_FILE_MODE ) ) < 0 ) {
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ast_log ( LOG_WARNING , " Unable to open %s in write-only mode \n " , outfile ) ;
close ( ifd ) ;
return - 1 ;
}
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while ( ( len = read ( ifd , buf , sizeof ( buf ) ) ) ) {
int res ;
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if ( len < 0 ) {
ast_log ( LOG_WARNING , " Read failed on %s: %s \n " , infile , strerror ( errno ) ) ;
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break ;
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}
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/* 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 ;
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}
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}
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close ( ifd ) ;
close ( ofd ) ;
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if ( len < 0 ) {
unlink ( outfile ) ;
return - 1 ; /* error */
}
return 0 ; /* success */
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}
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/*!
* \ 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 .
*/
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static char * build_filename ( const char * filename , const char * ext )
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{
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char * fn = NULL ;
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if ( ! strcmp ( ext , " wav49 " ) )
ext = " WAV " ;
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if ( filename [ 0 ] = = ' / ' ) {
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if ( ast_asprintf ( & fn , " %s.%s " , filename , ext ) < 0 ) {
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fn = NULL ;
}
} else {
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if ( ast_asprintf ( & fn , " %s/sounds/%s.%s " ,
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ast_config_AST_DATA_DIR , filename , ext ) < 0 ) {
fn = NULL ;
}
}
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return fn ;
}
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/* compare type against the list 'exts' */
/* XXX need a better algorithm */
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static int exts_compare ( const char * exts , const char * type )
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{
char tmp [ 256 ] ;
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char * stringp = tmp , * ext ;
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ast_copy_string ( tmp , exts , sizeof ( tmp ) ) ;
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while ( ( ext = strsep ( & stringp , " | " ) ) ) {
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if ( ! strcmp ( ext , type ) )
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return 1 ;
}
return 0 ;
}
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/*!
* \ internal
* \ brief Close the file stream by canceling any pending read / write callbacks
*/
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static void filestream_close ( struct ast_filestream * f )
{
enum ast_format_type format_type = AST_FORMAT_GET_TYPE ( f - > fmt - > format . id ) ;
if ( ! f - > owner ) {
return ;
}
/* Stop a running stream if there is one */
switch ( format_type )
{
case AST_FORMAT_TYPE_AUDIO :
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ast_channel_stream_set ( f - > owner , NULL ) ;
AST_SCHED_DEL_ACCESSOR ( ast_channel_sched ( f - > owner ) , f - > owner , ast_channel_streamid , ast_channel_streamid_set ) ;
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ast_settimeout ( f - > owner , 0 , NULL , NULL ) ;
break ;
case AST_FORMAT_TYPE_VIDEO :
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ast_channel_vstream_set ( f - > owner , NULL ) ;
AST_SCHED_DEL_ACCESSOR ( ast_channel_sched ( f - > owner ) , f - > owner , ast_channel_vstreamid , ast_channel_vstreamid_set ) ;
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break ;
default :
ast_log ( AST_LOG_WARNING , " Unable to schedule deletion of filestream with unsupported type %s \n " , f - > fmt - > name ) ;
break ;
}
}
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static void filestream_destructor ( void * arg )
{
struct ast_filestream * f = arg ;
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int status ;
int pid = - 1 ;
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/* Stop a running stream if there is one */
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filestream_close ( f ) ;
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/* destroy the translator on exit */
if ( f - > trans )
ast_translator_free_path ( f - > trans ) ;
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if ( f - > fmt - > close ) {
void ( * closefn ) ( struct ast_filestream * ) = f - > fmt - > close ;
closefn ( f ) ;
}
if ( f - > f ) {
fclose ( f - > f ) ;
}
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if ( f - > realfilename & & f - > filename ) {
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pid = ast_safe_fork ( 0 ) ;
if ( ! pid ) {
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execl ( " /bin/mv " , " mv " , " -f " , f - > filename , f - > realfilename , SENTINEL ) ;
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_exit ( 1 ) ;
}
else if ( pid > 0 ) {
/* Block the parent until the move is complete.*/
waitpid ( pid , & status , 0 ) ;
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}
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}
if ( f - > filename )
free ( f - > filename ) ;
if ( f - > realfilename )
free ( f - > realfilename ) ;
if ( f - > vfs )
ast_closestream ( f - > vfs ) ;
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if ( f - > write_buffer ) {
ast_free ( f - > write_buffer ) ;
}
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if ( f - > orig_chan_name )
free ( ( void * ) f - > orig_chan_name ) ;
ast_module_unref ( f - > fmt - > module ) ;
}
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static struct ast_filestream * get_filestream ( struct ast_format_def * fmt , FILE * bfile )
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{
struct ast_filestream * s ;
int l = sizeof ( * s ) + fmt - > buf_size + fmt - > desc_size ; /* total allocation size */
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if ( ( s = ao2_alloc ( l , filestream_destructor ) ) = = NULL )
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return NULL ;
s - > fmt = fmt ;
s - > f = bfile ;
if ( fmt - > desc_size )
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s - > _private = ( ( char * ) ( s + 1 ) ) + fmt - > buf_size ;
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if ( fmt - > buf_size )
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s - > buf = ( char * ) ( s + 1 ) ;
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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 )
{
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struct ast_format_def * f = s - > fmt ;
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int ret = - 1 ;
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int ( * openfn ) ( struct ast_filestream * s ) ;
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if ( mode = = WRAP_OPEN & & ( openfn = f - > open ) & & openfn ( s ) )
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ast_log ( LOG_WARNING , " Unable to open format %s \n " , f - > name ) ;
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else if ( mode = = WRAP_REWRITE & & f - > rewrite & & f - > rewrite ( s , comment ) )
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ast_log ( LOG_WARNING , " Unable to rewrite format %s \n " , f - > name ) ;
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else {
/* preliminary checks succeed. update usecount */
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ast_module_ref ( f - > module ) ;
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ret = 0 ;
}
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return ret ;
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}
static int rewrite_wrapper ( struct ast_filestream * s , const char * comment )
{
return fn_wrapper ( s , comment , WRAP_REWRITE ) ;
}
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static int open_wrapper ( struct ast_filestream * s )
{
return fn_wrapper ( s , NULL , WRAP_OPEN ) ;
}
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enum file_action {
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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 */
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ACTION_OPEN ,
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ACTION_COPY /* copy file. return 0 on success, -1 on error */
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} ;
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/*!
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* \ internal
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* \ brief perform various actions on a file . Second argument
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* \ note arg2 depends on the command :
* unused for DELETE
* optional ast_format_cap holding all the formats found for a file , for EXISTS .
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* destination file name ( const char * ) for COPY and RENAME
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* struct ast_channel * for OPEN
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* if fmt is NULL , OPEN will return the first matching entry ,
* whereas other functions will run on all matching entries .
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*/
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static int filehelper ( const char * filename , const void * arg2 , const char * fmt , const enum file_action action )
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{
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struct ast_format_def * f ;
int res = ( action = = ACTION_EXISTS ) ? 0 : - 1 ;
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AST_RWLIST_RDLOCK ( & formats ) ;
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/* Check for a specific format */
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AST_RWLIST_TRAVERSE ( & formats , f , list ) {
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char * stringp , * ext = NULL ;
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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 .
*/
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stringp = ast_strdupa ( f - > exts ) ; /* this is in the stack so does not need to be freed */
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while ( ( ext = strsep ( & stringp , " | " ) ) ) {
struct stat st ;
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char * fn = build_filename ( filename , ext ) ;
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if ( fn = = NULL )
continue ;
if ( stat ( fn , & st ) ) { /* file not existent */
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ast_free ( fn ) ;
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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 ;
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if ( ( ast_format_cmp ( ast_channel_writeformat ( chan ) , & f - > format ) = = AST_FORMAT_CMP_NOT_EQUAL ) & &
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! ( ( ( AST_FORMAT_GET_TYPE ( f - > format . id ) = = AST_FORMAT_TYPE_AUDIO ) & & fmt ) | |
( ( AST_FORMAT_GET_TYPE ( f - > format . id ) = = AST_FORMAT_TYPE_VIDEO ) & & fmt ) ) ) {
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ast_free ( fn ) ;
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continue ; /* not a supported format */
}
if ( ( bfile = fopen ( fn , " r " ) ) = = NULL ) {
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ast_free ( fn ) ;
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continue ; /* cannot open file */
}
s = get_filestream ( f , bfile ) ;
if ( ! s ) {
fclose ( bfile ) ;
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ast_free ( fn ) ; /* cannot allocate descriptor */
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continue ;
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}
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if ( open_wrapper ( s ) ) {
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ast_free ( fn ) ;
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ast_closestream ( s ) ;
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continue ; /* cannot run open on file */
}
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if ( st . st_size = = 0 ) {
ast_log ( LOG_WARNING , " File %s detected to have zero size. \n " , fn ) ;
}
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/* ok this is good for OPEN */
res = 1 ; /* found */
s - > lasttimeout = - 1 ;
s - > fmt = f ;
s - > trans = NULL ;
s - > filename = NULL ;
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if ( AST_FORMAT_GET_TYPE ( s - > fmt - > format . id ) = = AST_FORMAT_TYPE_AUDIO ) {
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if ( ast_channel_stream ( chan ) )
ast_closestream ( ast_channel_stream ( chan ) ) ;
ast_channel_stream_set ( chan , s ) ;
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} else {
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if ( ast_channel_vstream ( chan ) )
ast_closestream ( ast_channel_vstream ( chan ) ) ;
ast_channel_vstream_set ( chan , s ) ;
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}
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ast_free ( fn ) ;
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break ;
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}
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switch ( action ) {
case ACTION_OPEN :
break ; /* will never get here */
case ACTION_EXISTS : /* return the matching format */
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/* if arg2 is present, it is a format capabilities structure.
* Add this format to the set of formats this file can be played in */
if ( arg2 ) {
ast_format_cap_add ( ( struct ast_format_cap * ) arg2 , & f - > format ) ;
}
res = 1 ; /* file does exist and format it exists in is returned in arg2 */
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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 ) ) ;
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ast_free ( nfn ) ;
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}
}
break ;
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default :
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ast_log ( LOG_WARNING , " Unknown helper %u \n " , action ) ;
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}
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ast_free ( fn ) ;
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}
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}
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AST_RWLIST_UNLOCK ( & formats ) ;
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return res ;
}
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static int is_absolute_path ( const char * filename )
{
return filename [ 0 ] = = ' / ' ;
}
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/*!
* \ brief test if a file exists for a given format .
* \ note result_cap is OPTIONAL
* \ retval 1 , true and result_cap represents format capabilities file exists in .
* \ retval 0 , false
*/
static int fileexists_test ( const char * filename , const char * fmt , const char * lang ,
char * buf , int buflen , struct ast_format_cap * result_cap )
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{
if ( buf = = NULL ) {
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return 0 ;
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}
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if ( ast_language_is_prefix & & ! is_absolute_path ( filename ) ) { /* new layout */
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if ( lang ) {
snprintf ( buf , buflen , " %s/%s " , lang , filename ) ;
} else {
snprintf ( buf , buflen , " %s " , filename ) ;
}
} else { /* old layout */
strcpy ( buf , filename ) ; /* first copy the full string */
if ( lang ) {
/* insert the language and suffix if needed */
const char * c = strrchr ( filename , ' / ' ) ;
int offset = c ? c - filename + 1 : 0 ; /* points right after the last '/' */
snprintf ( buf + offset , buflen - offset , " %s/%s " , lang , filename + offset ) ;
}
}
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return filehelper ( buf , result_cap , fmt , ACTION_EXISTS ) ;
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}
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/*!
* \ brief helper routine to locate a file with a given format
* and language preference .
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*
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* \ note Try preflang , preflang with stripped ' _ ' suffices , or NULL .
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*
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* \ note The last parameter ( s ) point to a buffer of sufficient size ,
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* which on success is filled with the matching filename .
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*
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* \ param filename Name of the file .
* \ param fmt Format to look for the file in . OPTIONAL
* \ param preflang The perfered language
* \ param buf Returns the matching filename
* \ param buflen Size of the buf
* \ param result_cap OPTIONAL format capabilities result structure
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* returns what formats the file was found in .
*
* \ retval 1 , true . file exists and result format is set
* \ retval 0 , false . file does not exist .
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*/
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static int fileexists_core ( const char * filename , const char * fmt , const char * preflang ,
char * buf , int buflen , struct ast_format_cap * result_cap )
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{
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char * lang ;
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if ( buf = = NULL ) {
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return 0 ;
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}
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/* We try languages in the following order:
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* preflang ( may include dialect and style codes )
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* lang ( preflang without dialect - if any )
* < none >
* default ( unless the same as preflang or lang without dialect )
*/
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lang = ast_strdupa ( preflang ) ;
/* Try preferred language, including removing any style or dialect codes */
while ( ! ast_strlen_zero ( lang ) ) {
char * end ;
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if ( fileexists_test ( filename , fmt , lang , buf , buflen , result_cap ) ) {
return 1 ;
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}
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if ( ( end = strrchr ( lang , ' _ ' ) ) ! = NULL ) {
* end = ' \0 ' ;
continue ;
}
break ;
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}
/* Try without any language */
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if ( fileexists_test ( filename , fmt , NULL , buf , buflen , result_cap ) ) {
return 1 ;
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}
/* Finally try the default language unless it was already tried before */
if ( ( ast_strlen_zero ( preflang ) | | strcmp ( preflang , DEFAULT_LANGUAGE ) ) & & ( ast_strlen_zero ( lang ) | | strcmp ( lang , DEFAULT_LANGUAGE ) ) ) {
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if ( ( fileexists_test ( filename , fmt , DEFAULT_LANGUAGE , buf , buflen , result_cap ) ) > 0 ) {
return 1 ;
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}
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}
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return 0 ;
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}
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struct ast_filestream * ast_openstream ( struct ast_channel * chan , const char * filename , const char * preflang )
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{
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 )
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{
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/*
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* Use fileexists_core ( ) to find a file in a compatible
* language and format , set up a suitable translator ,
* and open the stream .
*/
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struct ast_format_cap * file_fmt_cap ;
int res ;
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int buflen ;
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char * buf ;
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if ( ! asis ) {
/* do this first, otherwise we detect the wrong writeformat */
ast_stopstream ( chan ) ;
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if ( ast_channel_generator ( chan ) )
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ast_deactivate_generator ( chan ) ;
}
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if ( preflang = = NULL )
preflang = " " ;
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buflen = strlen ( preflang ) + strlen ( filename ) + 4 ;
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buf = ast_alloca ( buflen ) ;
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if ( ! ( file_fmt_cap = ast_format_cap_alloc ( AST_FORMAT_CAP_FLAG_NOLOCK ) ) ) {
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return NULL ;
}
if ( ! fileexists_core ( filename , NULL , preflang , buf , buflen , file_fmt_cap ) | |
! ast_format_cap_has_type ( file_fmt_cap , AST_FORMAT_TYPE_AUDIO ) ) {
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ast_log ( LOG_WARNING , " File %s does not exist in any format \n " , filename ) ;
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file_fmt_cap = ast_format_cap_destroy ( file_fmt_cap ) ;
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return NULL ;
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}
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/* Set the channel to a format we can work with and save off the previous format. */
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ast_format_copy ( ast_channel_oldwriteformat ( chan ) , ast_channel_writeformat ( chan ) ) ;
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/* Set the channel to the best format that exists for the file. */
res = ast_set_write_format_from_cap ( chan , file_fmt_cap ) ;
/* don't need this anymore now that the channel's write format is set. */
file_fmt_cap = ast_format_cap_destroy ( file_fmt_cap ) ;
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if ( res = = - 1 ) { /* No format available that works with this channel */
return NULL ;
}
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res = filehelper ( buf , chan , NULL , ACTION_OPEN ) ;
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if ( res > = 0 )
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return ast_channel_stream ( chan ) ;
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return NULL ;
}
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struct ast_filestream * ast_openvstream ( struct ast_channel * chan , const char * filename , const char * preflang )
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{
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/* As above, but for video. But here we don't have translators
* so we must enforce a format .
*/
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struct ast_format tmp_fmt ;
struct ast_format_cap * tmp_cap ;
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char * buf ;
int buflen ;
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const char * fmt ;
int fd ;
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if ( preflang = = NULL )
preflang = " " ;
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buflen = strlen ( preflang ) + strlen ( filename ) + 4 ;
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buf = ast_alloca ( buflen ) ;
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/* is the channel capable of video without translation ?*/
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if ( ! ast_format_cap_has_type ( ast_channel_nativeformats ( chan ) , AST_FORMAT_TYPE_VIDEO ) ) {
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return NULL ;
}
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if ( ! ( tmp_cap = ast_format_cap_alloc ( AST_FORMAT_CAP_FLAG_NOLOCK ) ) ) {
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return NULL ;
}
/* Video is supported, so see what video formats exist for this file */
if ( ! fileexists_core ( filename , NULL , preflang , buf , buflen , tmp_cap ) ) {
tmp_cap = ast_format_cap_destroy ( tmp_cap ) ;
return NULL ;
}
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/* iterate over file formats and pick the first one compatible with the channel's native formats */
ast_format_cap_iter_start ( tmp_cap ) ;
while ( ! ast_format_cap_iter_next ( tmp_cap , & tmp_fmt ) ) {
fmt = ast_getformatname ( & tmp_fmt ) ;
if ( ( AST_FORMAT_GET_TYPE ( tmp_fmt . id ) ! = AST_FORMAT_TYPE_VIDEO ) | |
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! ast_format_cap_iscompatible ( ast_channel_nativeformats ( chan ) , & tmp_fmt ) ) {
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continue ;
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}
fd = filehelper ( buf , chan , fmt , ACTION_OPEN ) ;
if ( fd > = 0 ) {
ast_format_cap_iter_end ( tmp_cap ) ;
tmp_cap = ast_format_cap_destroy ( tmp_cap ) ;
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return ast_channel_vstream ( chan ) ;
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}
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ast_log ( LOG_WARNING , " File %s has video but couldn't be opened \n " , filename ) ;
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}
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ast_format_cap_iter_end ( tmp_cap ) ;
tmp_cap = ast_format_cap_destroy ( tmp_cap ) ;
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return NULL ;
}
Merged revisions 222878 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4
........
r222878 | russell | 2009-10-08 14:45:47 -0500 (Thu, 08 Oct 2009) | 44 lines
Make filestream frame handling safer by isolating frames before returning them.
This patch is related to a number of issues on the bug tracker that show
crashes related to freeing frames that came from a filestream. A number of
fixes have been made over time while trying to figure out these problems, but
there re still people seeing the crash. (Note that some of these bug reports
include information about other problems. I am specifically addressing
the filestream frame crash here.)
I'm still not clear on what the exact problem is. However, what is _very_
clear is that we have seen quite a few problems over time related to unexpected
behavior when we try to use embedded frames as an optimization. In some cases,
this optimization doesn't really provide much due to improvements made in other
areas.
In this case, the patch modifies filestream handling such that the embedded frame
will not be returned. ast_frisolate() is used to ensure that we end up with a
completely mallocd frame. In reality, though, we will not actually have to malloc
every time. For filestreams, the frame will almost always be allocated and freed
in the same thread. That means that the thread local frame cache will be used.
So, going this route doesn't hurt.
With this patch in place, some people have reported success in not seeing the
crash anymore.
(SWP-150)
(AST-208)
(ABE-1834)
(issue #15609)
Reported by: aragon
Patches:
filestream_frisolate-1.4.diff2.txt uploaded by russell (license 2)
Tested by: aragon, russell
(closes issue #15817)
Reported by: zerohalo
Tested by: zerohalo
(closes issue #15845)
Reported by: marhbere
Review: https://reviewboard.asterisk.org/r/386/
........
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@222880 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2009-10-08 19:52:03 +00:00
static struct ast_frame * read_frame ( struct ast_filestream * s , int * whennext )
2003-12-19 18:06:29 +00:00
{
Merged revisions 222878 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4
........
r222878 | russell | 2009-10-08 14:45:47 -0500 (Thu, 08 Oct 2009) | 44 lines
Make filestream frame handling safer by isolating frames before returning them.
This patch is related to a number of issues on the bug tracker that show
crashes related to freeing frames that came from a filestream. A number of
fixes have been made over time while trying to figure out these problems, but
there re still people seeing the crash. (Note that some of these bug reports
include information about other problems. I am specifically addressing
the filestream frame crash here.)
I'm still not clear on what the exact problem is. However, what is _very_
clear is that we have seen quite a few problems over time related to unexpected
behavior when we try to use embedded frames as an optimization. In some cases,
this optimization doesn't really provide much due to improvements made in other
areas.
In this case, the patch modifies filestream handling such that the embedded frame
will not be returned. ast_frisolate() is used to ensure that we end up with a
completely mallocd frame. In reality, though, we will not actually have to malloc
every time. For filestreams, the frame will almost always be allocated and freed
in the same thread. That means that the thread local frame cache will be used.
So, going this route doesn't hurt.
With this patch in place, some people have reported success in not seeing the
crash anymore.
(SWP-150)
(AST-208)
(ABE-1834)
(issue #15609)
Reported by: aragon
Patches:
filestream_frisolate-1.4.diff2.txt uploaded by russell (license 2)
Tested by: aragon, russell
(closes issue #15817)
Reported by: zerohalo
Tested by: zerohalo
(closes issue #15845)
Reported by: marhbere
Review: https://reviewboard.asterisk.org/r/386/
........
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@222880 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2009-10-08 19:52:03 +00:00
struct ast_frame * fr , * new_fr ;
if ( ! s | | ! s - > fmt ) {
return NULL ;
}
if ( ! ( fr = s - > fmt - > read ( s , whennext ) ) ) {
return NULL ;
}
if ( ! ( new_fr = ast_frisolate ( fr ) ) ) {
ast_frfree ( fr ) ;
return NULL ;
}
if ( new_fr ! = fr ) {
ast_frfree ( fr ) ;
fr = new_fr ;
2008-11-20 18:20:00 +00:00
}
Merged revisions 222878 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4
........
r222878 | russell | 2009-10-08 14:45:47 -0500 (Thu, 08 Oct 2009) | 44 lines
Make filestream frame handling safer by isolating frames before returning them.
This patch is related to a number of issues on the bug tracker that show
crashes related to freeing frames that came from a filestream. A number of
fixes have been made over time while trying to figure out these problems, but
there re still people seeing the crash. (Note that some of these bug reports
include information about other problems. I am specifically addressing
the filestream frame crash here.)
I'm still not clear on what the exact problem is. However, what is _very_
clear is that we have seen quite a few problems over time related to unexpected
behavior when we try to use embedded frames as an optimization. In some cases,
this optimization doesn't really provide much due to improvements made in other
areas.
In this case, the patch modifies filestream handling such that the embedded frame
will not be returned. ast_frisolate() is used to ensure that we end up with a
completely mallocd frame. In reality, though, we will not actually have to malloc
every time. For filestreams, the frame will almost always be allocated and freed
in the same thread. That means that the thread local frame cache will be used.
So, going this route doesn't hurt.
With this patch in place, some people have reported success in not seeing the
crash anymore.
(SWP-150)
(AST-208)
(ABE-1834)
(issue #15609)
Reported by: aragon
Patches:
filestream_frisolate-1.4.diff2.txt uploaded by russell (license 2)
Tested by: aragon, russell
(closes issue #15817)
Reported by: zerohalo
Tested by: zerohalo
(closes issue #15845)
Reported by: marhbere
Review: https://reviewboard.asterisk.org/r/386/
........
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@222880 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2009-10-08 19:52:03 +00:00
return fr ;
}
struct ast_frame * ast_readframe ( struct ast_filestream * s )
{
int whennext = 0 ;
return read_frame ( s , & whennext ) ;
2003-12-19 18:06:29 +00:00
}
2007-09-05 20:58:19 +00:00
enum fsread_res {
FSREAD_FAILURE ,
FSREAD_SUCCESS_SCHED ,
FSREAD_SUCCESS_NOSCHED ,
} ;
2007-09-21 14:40:10 +00:00
static int ast_fsread_audio ( const void * data ) ;
2007-09-05 20:58:19 +00:00
static enum fsread_res ast_readaudio_callback ( struct ast_filestream * s )
2003-02-06 22:11:43 +00:00
{
2003-06-28 22:50:47 +00:00
int whennext = 0 ;
2007-01-23 00:11:32 +00:00
while ( ! whennext ) {
2007-09-05 20:58:19 +00:00
struct ast_frame * fr ;
Merged revisions 222878 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4
........
r222878 | russell | 2009-10-08 14:45:47 -0500 (Thu, 08 Oct 2009) | 44 lines
Make filestream frame handling safer by isolating frames before returning them.
This patch is related to a number of issues on the bug tracker that show
crashes related to freeing frames that came from a filestream. A number of
fixes have been made over time while trying to figure out these problems, but
there re still people seeing the crash. (Note that some of these bug reports
include information about other problems. I am specifically addressing
the filestream frame crash here.)
I'm still not clear on what the exact problem is. However, what is _very_
clear is that we have seen quite a few problems over time related to unexpected
behavior when we try to use embedded frames as an optimization. In some cases,
this optimization doesn't really provide much due to improvements made in other
areas.
In this case, the patch modifies filestream handling such that the embedded frame
will not be returned. ast_frisolate() is used to ensure that we end up with a
completely mallocd frame. In reality, though, we will not actually have to malloc
every time. For filestreams, the frame will almost always be allocated and freed
in the same thread. That means that the thread local frame cache will be used.
So, going this route doesn't hurt.
With this patch in place, some people have reported success in not seeing the
crash anymore.
(SWP-150)
(AST-208)
(ABE-1834)
(issue #15609)
Reported by: aragon
Patches:
filestream_frisolate-1.4.diff2.txt uploaded by russell (license 2)
Tested by: aragon, russell
(closes issue #15817)
Reported by: zerohalo
Tested by: zerohalo
(closes issue #15845)
Reported by: marhbere
Review: https://reviewboard.asterisk.org/r/386/
........
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@222880 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2009-10-08 19:52:03 +00:00
2012-01-09 22:15:50 +00:00
if ( s - > orig_chan_name & & strcasecmp ( ast_channel_name ( s - > owner ) , s - > orig_chan_name ) ) {
2007-09-05 20:58:19 +00:00
goto return_failure ;
2008-12-22 16:07:59 +00:00
}
Merged revisions 222878 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4
........
r222878 | russell | 2009-10-08 14:45:47 -0500 (Thu, 08 Oct 2009) | 44 lines
Make filestream frame handling safer by isolating frames before returning them.
This patch is related to a number of issues on the bug tracker that show
crashes related to freeing frames that came from a filestream. A number of
fixes have been made over time while trying to figure out these problems, but
there re still people seeing the crash. (Note that some of these bug reports
include information about other problems. I am specifically addressing
the filestream frame crash here.)
I'm still not clear on what the exact problem is. However, what is _very_
clear is that we have seen quite a few problems over time related to unexpected
behavior when we try to use embedded frames as an optimization. In some cases,
this optimization doesn't really provide much due to improvements made in other
areas.
In this case, the patch modifies filestream handling such that the embedded frame
will not be returned. ast_frisolate() is used to ensure that we end up with a
completely mallocd frame. In reality, though, we will not actually have to malloc
every time. For filestreams, the frame will almost always be allocated and freed
in the same thread. That means that the thread local frame cache will be used.
So, going this route doesn't hurt.
With this patch in place, some people have reported success in not seeing the
crash anymore.
(SWP-150)
(AST-208)
(ABE-1834)
(issue #15609)
Reported by: aragon
Patches:
filestream_frisolate-1.4.diff2.txt uploaded by russell (license 2)
Tested by: aragon, russell
(closes issue #15817)
Reported by: zerohalo
Tested by: zerohalo
(closes issue #15845)
Reported by: marhbere
Review: https://reviewboard.asterisk.org/r/386/
........
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@222880 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2009-10-08 19:52:03 +00:00
fr = read_frame ( s , & whennext ) ;
2006-04-04 12:59:25 +00:00
if ( ! fr /* stream complete */ | | ast_write ( s - > owner , fr ) /* error writing */ ) {
Fix a problem where file playback would cause fds to remain open forever
The problem came from the fact that a frame read from a format interpreter
was not freed. Adding a call to ast_frfree fixed this. The explanation for
why this caused the problem is a bit complex, but here goes:
There was a problem in all versions of Asterisk where the embedded frame
of a filestream structure was referenced after the filestream was freed. This
was fixed by adding reference counting to the filestream structure. The refcount
would increase every time that a filestream's frame pointer was pointing to an
actual frame of data. When the frame was freed, the refcount would decrease. Once
the refcount reached 0, the filestream was freed, and as part of the operation,
the open files were closed as well.
Thus it becomes more clear why a missing ast_frfree would cause a reference leak
and cause the files to not be closed. You may ask then if there was a frame leak
before this patch. The answer to that is actually no! The filestream code was
"smart" enough to know that since the frame we received came from a format interpreter,
the frame had no malloced data and thus didn't need to be freed. Now, however, there
is cleanup that needs to be done when we finish with the frame, so we do need to
call ast_frfree on the frame to be sure that the refcount for the filestream is
decremented appropriately.
(closes issue #14384)
Reported by: fiddur
Patches:
14384.patch uploaded by putnopvut (license 60)
Tested by: fiddur, putnopvut
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@173354 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2009-02-04 15:30:12 +00:00
if ( fr ) {
2003-06-28 22:50:47 +00:00
ast_log ( LOG_WARNING , " Failed to write frame \n " ) ;
Fix a problem where file playback would cause fds to remain open forever
The problem came from the fact that a frame read from a format interpreter
was not freed. Adding a call to ast_frfree fixed this. The explanation for
why this caused the problem is a bit complex, but here goes:
There was a problem in all versions of Asterisk where the embedded frame
of a filestream structure was referenced after the filestream was freed. This
was fixed by adding reference counting to the filestream structure. The refcount
would increase every time that a filestream's frame pointer was pointing to an
actual frame of data. When the frame was freed, the refcount would decrease. Once
the refcount reached 0, the filestream was freed, and as part of the operation,
the open files were closed as well.
Thus it becomes more clear why a missing ast_frfree would cause a reference leak
and cause the files to not be closed. You may ask then if there was a frame leak
before this patch. The answer to that is actually no! The filestream code was
"smart" enough to know that since the frame we received came from a format interpreter,
the frame had no malloced data and thus didn't need to be freed. Now, however, there
is cleanup that needs to be done when we finish with the frame, so we do need to
call ast_frfree on the frame to be sure that the refcount for the filestream is
decremented appropriately.
(closes issue #14384)
Reported by: fiddur
Patches:
14384.patch uploaded by putnopvut (license 60)
Tested by: fiddur, putnopvut
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@173354 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2009-02-04 15:30:12 +00:00
ast_frfree ( fr ) ;
}
2007-09-05 20:58:19 +00:00
goto return_failure ;
2012-03-22 19:51:16 +00:00
}
Merged revisions 222878 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4
........
r222878 | russell | 2009-10-08 14:45:47 -0500 (Thu, 08 Oct 2009) | 44 lines
Make filestream frame handling safer by isolating frames before returning them.
This patch is related to a number of issues on the bug tracker that show
crashes related to freeing frames that came from a filestream. A number of
fixes have been made over time while trying to figure out these problems, but
there re still people seeing the crash. (Note that some of these bug reports
include information about other problems. I am specifically addressing
the filestream frame crash here.)
I'm still not clear on what the exact problem is. However, what is _very_
clear is that we have seen quite a few problems over time related to unexpected
behavior when we try to use embedded frames as an optimization. In some cases,
this optimization doesn't really provide much due to improvements made in other
areas.
In this case, the patch modifies filestream handling such that the embedded frame
will not be returned. ast_frisolate() is used to ensure that we end up with a
completely mallocd frame. In reality, though, we will not actually have to malloc
every time. For filestreams, the frame will almost always be allocated and freed
in the same thread. That means that the thread local frame cache will be used.
So, going this route doesn't hurt.
With this patch in place, some people have reported success in not seeing the
crash anymore.
(SWP-150)
(AST-208)
(ABE-1834)
(issue #15609)
Reported by: aragon
Patches:
filestream_frisolate-1.4.diff2.txt uploaded by russell (license 2)
Tested by: aragon, russell
(closes issue #15817)
Reported by: zerohalo
Tested by: zerohalo
(closes issue #15845)
Reported by: marhbere
Review: https://reviewboard.asterisk.org/r/386/
........
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@222880 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2009-10-08 19:52:03 +00:00
Fix a problem where file playback would cause fds to remain open forever
The problem came from the fact that a frame read from a format interpreter
was not freed. Adding a call to ast_frfree fixed this. The explanation for
why this caused the problem is a bit complex, but here goes:
There was a problem in all versions of Asterisk where the embedded frame
of a filestream structure was referenced after the filestream was freed. This
was fixed by adding reference counting to the filestream structure. The refcount
would increase every time that a filestream's frame pointer was pointing to an
actual frame of data. When the frame was freed, the refcount would decrease. Once
the refcount reached 0, the filestream was freed, and as part of the operation,
the open files were closed as well.
Thus it becomes more clear why a missing ast_frfree would cause a reference leak
and cause the files to not be closed. You may ask then if there was a frame leak
before this patch. The answer to that is actually no! The filestream code was
"smart" enough to know that since the frame we received came from a format interpreter,
the frame had no malloced data and thus didn't need to be freed. Now, however, there
is cleanup that needs to be done when we finish with the frame, so we do need to
call ast_frfree on the frame to be sure that the refcount for the filestream is
decremented appropriately.
(closes issue #14384)
Reported by: fiddur
Patches:
14384.patch uploaded by putnopvut (license 60)
Tested by: fiddur, putnopvut
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@173354 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2009-02-04 15:30:12 +00:00
if ( fr ) {
ast_frfree ( fr ) ;
2003-06-28 22:50:47 +00:00
}
}
Merged revisions 222878 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4
........
r222878 | russell | 2009-10-08 14:45:47 -0500 (Thu, 08 Oct 2009) | 44 lines
Make filestream frame handling safer by isolating frames before returning them.
This patch is related to a number of issues on the bug tracker that show
crashes related to freeing frames that came from a filestream. A number of
fixes have been made over time while trying to figure out these problems, but
there re still people seeing the crash. (Note that some of these bug reports
include information about other problems. I am specifically addressing
the filestream frame crash here.)
I'm still not clear on what the exact problem is. However, what is _very_
clear is that we have seen quite a few problems over time related to unexpected
behavior when we try to use embedded frames as an optimization. In some cases,
this optimization doesn't really provide much due to improvements made in other
areas.
In this case, the patch modifies filestream handling such that the embedded frame
will not be returned. ast_frisolate() is used to ensure that we end up with a
completely mallocd frame. In reality, though, we will not actually have to malloc
every time. For filestreams, the frame will almost always be allocated and freed
in the same thread. That means that the thread local frame cache will be used.
So, going this route doesn't hurt.
With this patch in place, some people have reported success in not seeing the
crash anymore.
(SWP-150)
(AST-208)
(ABE-1834)
(issue #15609)
Reported by: aragon
Patches:
filestream_frisolate-1.4.diff2.txt uploaded by russell (license 2)
Tested by: aragon, russell
(closes issue #15817)
Reported by: zerohalo
Tested by: zerohalo
(closes issue #15845)
Reported by: marhbere
Review: https://reviewboard.asterisk.org/r/386/
........
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@222880 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2009-10-08 19:52:03 +00:00
2003-06-28 22:50:47 +00:00
if ( whennext ! = s - > lasttimeout ) {
2012-02-20 23:43:27 +00:00
if ( ast_channel_timingfd ( s - > owner ) > - 1 ) {
2011-02-03 16:22:10 +00:00
float samp_rate = ( float ) ast_format_rate ( & s - > fmt - > format ) ;
2008-06-13 12:45:50 +00:00
unsigned int rate ;
rate = ( unsigned int ) roundf ( samp_rate / ( ( float ) whennext ) ) ;
2014-01-27 01:25:23 +00:00
ast_settimeout_full ( s - > owner , rate , ast_fsread_audio , s , 1 ) ;
2008-06-13 12:45:50 +00:00
} else {
2012-02-20 23:43:27 +00:00
ast_channel_streamid_set ( s - > owner , ast_sched_add ( ast_channel_sched ( s - > owner ) , whennext / ( ast_format_rate ( & s - > fmt - > format ) / 1000 ) , ast_fsread_audio , s ) ) ;
2008-06-13 12:45:50 +00:00
}
2003-06-28 22:50:47 +00:00
s - > lasttimeout = whennext ;
2007-09-05 20:58:19 +00:00
return FSREAD_SUCCESS_NOSCHED ;
2003-02-06 22:11:43 +00:00
}
2007-09-05 20:58:19 +00:00
return FSREAD_SUCCESS_SCHED ;
return_failure :
2012-02-20 23:43:27 +00:00
ast_channel_streamid_set ( s - > owner , - 1 ) ;
2007-09-05 20:58:19 +00:00
ast_settimeout ( s - > owner , 0 , NULL , NULL ) ;
return FSREAD_FAILURE ;
2003-06-28 22:50:47 +00:00
}
2007-09-21 14:40:10 +00:00
static int ast_fsread_audio ( const void * data )
2007-09-05 20:58:19 +00:00
{
2007-09-21 14:40:10 +00:00
struct ast_filestream * fs = ( struct ast_filestream * ) data ;
2007-09-05 20:58:19 +00:00
enum fsread_res res ;
res = ast_readaudio_callback ( fs ) ;
if ( res = = FSREAD_SUCCESS_SCHED )
return 1 ;
2012-03-22 19:51:16 +00:00
2007-09-05 20:58:19 +00:00
return 0 ;
}
2007-09-21 14:40:10 +00:00
static int ast_fsread_video ( const void * data ) ;
2007-09-05 20:58:19 +00:00
static enum fsread_res ast_readvideo_callback ( struct ast_filestream * s )
2003-06-29 03:24:39 +00:00
{
int whennext = 0 ;
2006-04-04 12:59:25 +00:00
while ( ! whennext ) {
Merged revisions 222878 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4
........
r222878 | russell | 2009-10-08 14:45:47 -0500 (Thu, 08 Oct 2009) | 44 lines
Make filestream frame handling safer by isolating frames before returning them.
This patch is related to a number of issues on the bug tracker that show
crashes related to freeing frames that came from a filestream. A number of
fixes have been made over time while trying to figure out these problems, but
there re still people seeing the crash. (Note that some of these bug reports
include information about other problems. I am specifically addressing
the filestream frame crash here.)
I'm still not clear on what the exact problem is. However, what is _very_
clear is that we have seen quite a few problems over time related to unexpected
behavior when we try to use embedded frames as an optimization. In some cases,
this optimization doesn't really provide much due to improvements made in other
areas.
In this case, the patch modifies filestream handling such that the embedded frame
will not be returned. ast_frisolate() is used to ensure that we end up with a
completely mallocd frame. In reality, though, we will not actually have to malloc
every time. For filestreams, the frame will almost always be allocated and freed
in the same thread. That means that the thread local frame cache will be used.
So, going this route doesn't hurt.
With this patch in place, some people have reported success in not seeing the
crash anymore.
(SWP-150)
(AST-208)
(ABE-1834)
(issue #15609)
Reported by: aragon
Patches:
filestream_frisolate-1.4.diff2.txt uploaded by russell (license 2)
Tested by: aragon, russell
(closes issue #15817)
Reported by: zerohalo
Tested by: zerohalo
(closes issue #15845)
Reported by: marhbere
Review: https://reviewboard.asterisk.org/r/386/
........
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@222880 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2009-10-08 19:52:03 +00:00
struct ast_frame * fr = read_frame ( s , & whennext ) ;
2009-04-15 20:17:33 +00:00
if ( ! fr /* stream complete */ | | ast_write ( s - > owner , fr ) /* error writing */ ) {
if ( fr ) {
2003-06-29 03:24:39 +00:00
ast_log ( LOG_WARNING , " Failed to write frame \n " ) ;
2009-04-15 20:17:33 +00:00
ast_frfree ( fr ) ;
}
2012-02-20 23:43:27 +00:00
ast_channel_vstreamid_set ( s - > owner , - 1 ) ;
2007-09-05 20:58:19 +00:00
return FSREAD_FAILURE ;
2003-06-29 03:24:39 +00:00
}
Merged revisions 222878 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4
........
r222878 | russell | 2009-10-08 14:45:47 -0500 (Thu, 08 Oct 2009) | 44 lines
Make filestream frame handling safer by isolating frames before returning them.
This patch is related to a number of issues on the bug tracker that show
crashes related to freeing frames that came from a filestream. A number of
fixes have been made over time while trying to figure out these problems, but
there re still people seeing the crash. (Note that some of these bug reports
include information about other problems. I am specifically addressing
the filestream frame crash here.)
I'm still not clear on what the exact problem is. However, what is _very_
clear is that we have seen quite a few problems over time related to unexpected
behavior when we try to use embedded frames as an optimization. In some cases,
this optimization doesn't really provide much due to improvements made in other
areas.
In this case, the patch modifies filestream handling such that the embedded frame
will not be returned. ast_frisolate() is used to ensure that we end up with a
completely mallocd frame. In reality, though, we will not actually have to malloc
every time. For filestreams, the frame will almost always be allocated and freed
in the same thread. That means that the thread local frame cache will be used.
So, going this route doesn't hurt.
With this patch in place, some people have reported success in not seeing the
crash anymore.
(SWP-150)
(AST-208)
(ABE-1834)
(issue #15609)
Reported by: aragon
Patches:
filestream_frisolate-1.4.diff2.txt uploaded by russell (license 2)
Tested by: aragon, russell
(closes issue #15817)
Reported by: zerohalo
Tested by: zerohalo
(closes issue #15845)
Reported by: marhbere
Review: https://reviewboard.asterisk.org/r/386/
........
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@222880 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2009-10-08 19:52:03 +00:00
2009-04-15 20:17:33 +00:00
if ( fr ) {
ast_frfree ( fr ) ;
}
2003-06-29 03:24:39 +00:00
}
2007-09-05 20:58:19 +00:00
2003-06-29 03:24:39 +00:00
if ( whennext ! = s - > lasttimeout ) {
2012-02-20 23:43:27 +00:00
ast_channel_vstreamid_set ( s - > owner , ast_sched_add ( ast_channel_sched ( s - > owner ) , whennext / ( ast_format_rate ( & s - > fmt - > format ) / 1000 ) , ast_fsread_video , s ) ) ;
2003-06-29 03:24:39 +00:00
s - > lasttimeout = whennext ;
2007-09-05 20:58:19 +00:00
return FSREAD_SUCCESS_NOSCHED ;
2003-06-29 03:24:39 +00:00
}
2007-09-05 20:58:19 +00:00
return FSREAD_SUCCESS_SCHED ;
}
2007-09-21 14:40:10 +00:00
static int ast_fsread_video ( const void * data )
2007-09-05 20:58:19 +00:00
{
2007-09-21 14:40:10 +00:00
struct ast_filestream * fs = ( struct ast_filestream * ) data ;
2007-09-05 20:58:19 +00:00
enum fsread_res res ;
res = ast_readvideo_callback ( fs ) ;
if ( res = = FSREAD_SUCCESS_SCHED )
return 1 ;
2012-03-22 19:51:16 +00:00
2007-09-05 20:58:19 +00:00
return 0 ;
2003-06-29 03:24:39 +00:00
}
2003-06-28 22:50:47 +00:00
int ast_applystream ( struct ast_channel * chan , struct ast_filestream * s )
{
s - > owner = chan ;
2003-02-06 22:11:43 +00:00
return 0 ;
}
int ast_playstream ( struct ast_filestream * s )
{
2007-09-05 20:58:19 +00:00
enum fsread_res res ;
2011-02-03 16:22:10 +00:00
if ( AST_FORMAT_GET_TYPE ( s - > fmt - > format . id ) = = AST_FORMAT_TYPE_AUDIO )
2007-09-05 20:58:19 +00:00
res = ast_readaudio_callback ( s ) ;
2003-06-29 03:24:39 +00:00
else
2007-09-05 20:58:19 +00:00
res = ast_readvideo_callback ( s ) ;
return ( res = = FSREAD_FAILURE ) ? - 1 : 0 ;
2003-02-06 22:11:43 +00:00
}
2006-02-20 23:35:12 +00:00
int ast_seekstream ( struct ast_filestream * fs , off_t sample_offset , int whence )
2003-02-06 22:11:43 +00:00
{
return fs - > fmt - > seek ( fs , sample_offset , whence ) ;
}
int ast_truncstream ( struct ast_filestream * fs )
{
return fs - > fmt - > trunc ( fs ) ;
}
2006-02-20 23:35:12 +00:00
off_t ast_tellstream ( struct ast_filestream * fs )
2003-02-06 22:11:43 +00:00
{
return fs - > fmt - > tell ( fs ) ;
}
2006-02-20 23:35:12 +00:00
int ast_stream_fastforward ( struct ast_filestream * fs , off_t ms )
2003-02-06 22:11:43 +00:00
{
2006-04-04 12:59:25 +00:00
return ast_seekstream ( fs , ms * DEFAULT_SAMPLES_PER_MS , SEEK_CUR ) ;
2003-02-06 22:11:43 +00:00
}
2006-02-20 23:35:12 +00:00
int ast_stream_rewind ( struct ast_filestream * fs , off_t ms )
2003-02-06 22:11:43 +00:00
{
2006-04-04 12:59:25 +00:00
return ast_seekstream ( fs , - ms * DEFAULT_SAMPLES_PER_MS , SEEK_CUR ) ;
2003-02-06 22:11:43 +00:00
}
int ast_closestream ( struct ast_filestream * f )
{
2009-09-20 17:55:49 +00:00
/* This used to destroy the filestream, but it now just decrements a refcount.
2011-11-11 21:57:46 +00:00
* We close the stream in order to quit queuing frames now , because we might
2009-09-20 17:55:49 +00:00
* change the writeformat , which could result in a subsequent write error , if
* the format is different . */
2013-07-03 17:58:45 +00:00
if ( f = = NULL ) {
return 0 ;
}
2011-11-11 21:57:46 +00:00
filestream_close ( f ) ;
2008-11-20 18:20:00 +00:00
ao2_ref ( f , - 1 ) ;
2003-02-06 22:11:43 +00:00
return 0 ;
}
2006-04-04 12:59:25 +00:00
/*
* Look the various language - specific places where a file could exist .
*/
2004-11-13 16:13:07 +00:00
int ast_fileexists ( const char * filename , const char * fmt , const char * preflang )
2003-02-06 22:11:43 +00:00
{
2006-04-04 12:59:25 +00:00
char * buf ;
int buflen ;
if ( preflang = = NULL )
preflang = " " ;
2008-02-27 20:37:32 +00:00
buflen = strlen ( preflang ) + strlen ( filename ) + 4 ; /* room for everything */
2012-07-31 20:21:43 +00:00
buf = ast_alloca ( buflen ) ;
2011-02-03 16:22:10 +00:00
return fileexists_core ( filename , fmt , preflang , buf , buflen , NULL ) ? 1 : 0 ;
2003-02-06 22:11:43 +00:00
}
2004-11-13 16:13:07 +00:00
int ast_filedelete ( const char * filename , const char * fmt )
2003-02-06 22:11:43 +00:00
{
2011-02-03 16:22:10 +00:00
return filehelper ( filename , NULL , fmt , ACTION_DELETE ) ;
2003-02-06 22:11:43 +00:00
}
2004-11-13 16:13:07 +00:00
int ast_filerename ( const char * filename , const char * filename2 , const char * fmt )
2003-02-06 22:11:43 +00:00
{
2011-02-03 16:22:10 +00:00
return filehelper ( filename , filename2 , fmt , ACTION_RENAME ) ;
2003-02-06 22:11:43 +00:00
}
2004-11-13 16:13:07 +00:00
int ast_filecopy ( const char * filename , const char * filename2 , const char * fmt )
2003-02-06 22:11:43 +00:00
{
2011-02-03 16:22:10 +00:00
return filehelper ( filename , filename2 , fmt , ACTION_COPY ) ;
2003-02-06 22:11:43 +00:00
}
2004-11-13 16:13:07 +00:00
int ast_streamfile ( struct ast_channel * chan , const char * filename , const char * preflang )
2003-02-06 22:11:43 +00:00
{
struct ast_filestream * fs ;
2006-01-07 17:54:22 +00:00
struct ast_filestream * vfs = NULL ;
char fmt [ 256 ] ;
2012-01-05 22:11:41 +00:00
off_t pos ;
2008-11-20 17:37:31 +00:00
int seekattempt ;
2008-11-25 00:19:55 +00:00
int res ;
2003-02-06 22:11:43 +00:00
fs = ast_openstream ( chan , filename , preflang ) ;
2008-11-24 21:27:26 +00:00
if ( ! fs ) {
2012-02-20 23:43:27 +00:00
ast_log ( LOG_WARNING , " Unable to open %s (format %s): %s \n " , filename , ast_getformatname_multiple ( fmt , sizeof ( fmt ) , ast_channel_nativeformats ( chan ) ) , strerror ( errno ) ) ;
2008-11-24 21:27:26 +00:00
return - 1 ;
}
2008-11-20 17:37:31 +00:00
/* check to see if there is any data present (not a zero length file),
* done this way because there is no where for ast_openstream_full to
* return the file had no data . */
2012-01-05 22:11:41 +00:00
pos = ftello ( fs - > f ) ;
seekattempt = fseeko ( fs - > f , - 1 , SEEK_END ) ;
if ( seekattempt ) {
if ( errno = = EINVAL ) {
/* Zero-length file, as opposed to a pipe */
return 0 ;
} else {
ast_seekstream ( fs , 0 , SEEK_SET ) ;
}
2010-10-06 13:50:33 +00:00
} else {
2012-01-05 22:11:41 +00:00
fseeko ( fs - > f , pos , SEEK_SET ) ;
2010-10-06 13:50:33 +00:00
}
2008-11-20 17:37:31 +00:00
2008-11-24 21:27:26 +00:00
vfs = ast_openvstream ( chan , filename , preflang ) ;
2006-10-03 15:53:07 +00:00
if ( vfs ) {
2011-02-03 16:22:10 +00:00
ast_debug ( 1 , " Ooh, found a video stream, too, format %s \n " , ast_getformatname ( & vfs - > fmt - > format ) ) ;
2006-10-03 15:53:07 +00:00
}
2007-01-16 17:39:39 +00:00
2012-03-13 18:20:34 +00:00
if ( ast_test_flag ( ast_channel_flags ( chan ) , AST_FLAG_MASQ_NOSTREAM ) )
2012-01-09 22:15:50 +00:00
fs - > orig_chan_name = ast_strdup ( ast_channel_name ( chan ) ) ;
2008-11-24 21:27:26 +00:00
if ( ast_applystream ( chan , fs ) )
return - 1 ;
if ( vfs & & ast_applystream ( chan , vfs ) )
return - 1 ;
res = ast_playstream ( fs ) ;
if ( ! res & & vfs )
res = ast_playstream ( vfs ) ;
2012-02-24 00:32:20 +00:00
ast_verb ( 3 , " <%s> Playing '%s.%s' (language '%s') \n " , ast_channel_name ( chan ) , filename , ast_getformatname ( ast_channel_writeformat ( chan ) ) , preflang ? preflang : " default " ) ;
2008-11-24 21:27:26 +00:00
return res ;
1999-12-02 20:24:59 +00:00
}
2004-11-13 16:13:07 +00:00
struct ast_filestream * ast_readfile ( const char * filename , const char * type , const char * comment , int flags , int check , mode_t mode )
2003-12-19 18:06:29 +00:00
{
2005-10-16 16:12:51 +00:00
FILE * bfile ;
2011-02-03 16:22:10 +00:00
struct ast_format_def * f ;
2005-07-05 14:37:24 +00:00
struct ast_filestream * fs = NULL ;
2003-12-19 18:06:29 +00:00
char * fn ;
2012-03-22 19:51:16 +00:00
int format_found = 0 ;
2005-07-05 14:37:24 +00:00
2007-01-26 22:55:06 +00:00
AST_RWLIST_RDLOCK ( & formats ) ;
2005-07-05 14:37:24 +00:00
2007-01-26 22:55:06 +00:00
AST_RWLIST_TRAVERSE ( & formats , f , list ) {
2006-04-04 12:59:25 +00:00
fs = NULL ;
2005-07-05 14:37:24 +00:00
if ( ! exts_compare ( f - > exts , type ) )
continue ;
2012-03-22 19:51:16 +00:00
else
2008-02-19 21:38:39 +00:00
format_found = 1 ;
2005-07-05 14:37:24 +00:00
fn = build_filename ( filename , type ) ;
2012-08-21 21:01:11 +00:00
if ( ! fn ) {
continue ;
}
2006-04-04 12:59:25 +00:00
errno = 0 ;
2005-10-16 16:12:51 +00:00
bfile = fopen ( fn , " r " ) ;
2008-02-19 21:38:39 +00:00
if ( ! bfile | | ( fs = get_filestream ( f , bfile ) ) = = NULL | | open_wrapper ( fs ) ) {
2006-04-04 12:59:25 +00:00
ast_log ( LOG_WARNING , " Unable to open %s \n " , fn ) ;
2009-01-07 22:36:34 +00:00
if ( fs ) {
ast_closestream ( fs ) ;
}
2008-09-12 16:29:01 +00:00
fs = NULL ;
2009-01-07 22:36:34 +00:00
bfile = NULL ;
2007-06-06 21:20:11 +00:00
ast_free ( fn ) ;
2012-03-22 19:51:16 +00:00
break ;
2006-04-04 12:59:25 +00:00
}
/* found it */
fs - > trans = NULL ;
fs - > fmt = f ;
fs - > flags = flags ;
fs - > mode = mode ;
2007-06-14 23:01:01 +00:00
fs - > filename = ast_strdup ( filename ) ;
2006-04-04 12:59:25 +00:00
fs - > vfs = NULL ;
2012-08-21 21:01:11 +00:00
ast_free ( fn ) ;
2006-04-04 12:59:25 +00:00
break ;
2003-12-19 18:06:29 +00:00
}
2005-07-05 14:37:24 +00:00
2007-01-26 22:55:06 +00:00
AST_RWLIST_UNLOCK ( & formats ) ;
2008-02-19 21:38:39 +00:00
if ( ! format_found )
2003-12-19 18:06:29 +00:00
ast_log ( LOG_WARNING , " No such format '%s' \n " , type ) ;
2005-07-05 14:37:24 +00:00
2003-12-19 18:06:29 +00:00
return fs ;
}
1999-12-02 20:24:59 +00:00
2004-11-13 16:13:07 +00:00
struct ast_filestream * ast_writefile ( const char * filename , const char * type , const char * comment , int flags , int check , mode_t mode )
1999-12-02 20:24:59 +00:00
{
2005-07-05 14:37:24 +00:00
int fd , myflags = 0 ;
2005-10-16 23:26:35 +00:00
/* compiler claims this variable can be used before initialization... */
FILE * bfile = NULL ;
2011-02-03 16:22:10 +00:00
struct ast_format_def * f ;
2005-07-05 14:37:24 +00:00
struct ast_filestream * fs = NULL ;
char * buf = NULL ;
2004-09-07 01:49:08 +00:00
size_t size = 0 ;
2006-06-14 02:21:47 +00:00
int format_found = 0 ;
2004-09-07 01:49:08 +00:00
2007-01-26 22:55:06 +00:00
AST_RWLIST_RDLOCK ( & formats ) ;
2005-07-05 14:37:24 +00:00
2003-02-06 22:11:43 +00:00
/* set the O_TRUNC flag if and only if there is no O_APPEND specified */
2006-04-04 12:59:25 +00:00
/* We really can't use O_APPEND as it will break WAV header updates */
2012-03-22 19:51:16 +00:00
if ( flags & O_APPEND ) {
2005-02-03 05:35:03 +00:00
flags & = ~ O_APPEND ;
} else {
2003-12-19 18:06:29 +00:00
myflags = O_TRUNC ;
2005-02-03 05:35:03 +00:00
}
2012-03-22 19:51:16 +00:00
2003-12-19 18:06:29 +00:00
myflags | = O_WRONLY | O_CREAT ;
2006-04-04 12:59:25 +00:00
/* XXX need to fix this - we should just do the fopen,
* not open followed by fdopen ( )
*/
2007-01-26 22:55:06 +00:00
AST_RWLIST_TRAVERSE ( & formats , f , list ) {
2006-04-04 12:59:25 +00:00
char * fn , * orig_fn = NULL ;
2006-01-09 21:30:46 +00:00
if ( fs )
break ;
2005-07-05 14:37:24 +00:00
if ( ! exts_compare ( f - > exts , type ) )
continue ;
2006-06-14 02:21:47 +00:00
else
format_found = 1 ;
2005-07-05 14:37:24 +00:00
fn = build_filename ( filename , type ) ;
2012-08-21 21:01:11 +00:00
if ( ! fn ) {
continue ;
}
2005-07-05 14:37:24 +00:00
fd = open ( fn , flags | myflags , mode ) ;
2005-10-16 16:12:51 +00:00
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 ;
}
}
2012-03-22 19:51:16 +00:00
2005-12-04 20:40:46 +00:00
if ( ast_opt_cache_record_files & & ( fd > - 1 ) ) {
2005-07-05 14:37:24 +00:00
char * c ;
2006-04-04 12:59:25 +00:00
fclose ( bfile ) ; /* this also closes fd */
2005-07-05 14:37:24 +00:00
/*
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 ;
2012-07-31 20:21:43 +00:00
buf = ast_alloca ( size ) ;
2005-10-16 23:26:35 +00:00
strcpy ( buf , record_cache_dir ) ;
strcat ( buf , " / " ) ;
strcat ( buf , fn ) ;
2007-06-06 21:20:11 +00:00
ast_free ( fn ) ;
2005-07-05 14:37:24 +00:00
fn = buf ;
2003-12-19 18:06:29 +00:00
fd = open ( fn , flags | myflags , mode ) ;
2005-10-16 16:12:51 +00:00
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 ;
}
}
2005-07-05 14:37:24 +00:00
}
2005-10-16 23:26:35 +00:00
if ( fd > - 1 ) {
2005-07-05 14:37:24 +00:00
errno = 0 ;
2006-04-04 12:59:25 +00:00
fs = get_filestream ( f , bfile ) ;
2011-01-26 01:27:39 +00:00
if ( fs ) {
if ( ( fs - > write_buffer = ast_malloc ( 32768 ) ) ) {
setvbuf ( fs - > f , fs - > write_buffer , _IOFBF , 32768 ) ;
}
}
2006-04-04 12:59:25 +00:00
if ( ! fs | | rewrite_wrapper ( fs , comment ) ) {
2005-07-05 14:37:24 +00:00
ast_log ( LOG_WARNING , " Unable to rewrite %s \n " , fn ) ;
close ( fd ) ;
if ( orig_fn ) {
unlink ( fn ) ;
2004-09-07 01:49:08 +00:00
unlink ( orig_fn ) ;
2005-07-05 14:37:24 +00:00
}
2009-01-07 22:36:34 +00:00
if ( fs ) {
ast_closestream ( fs ) ;
fs = NULL ;
}
2012-08-21 21:01:11 +00:00
if ( ! buf ) {
ast_free ( fn ) ;
}
2007-06-06 23:41:37 +00:00
continue ;
2006-04-04 12:59:25 +00:00
}
fs - > trans = NULL ;
fs - > fmt = f ;
fs - > flags = flags ;
fs - > mode = mode ;
if ( orig_fn ) {
2007-06-14 23:01:01 +00:00
fs - > realfilename = ast_strdup ( orig_fn ) ;
fs - > filename = ast_strdup ( fn ) ;
2006-04-04 12:59:25 +00:00
} else {
fs - > realfilename = NULL ;
2007-06-14 23:01:01 +00:00
fs - > filename = ast_strdup ( filename ) ;
2004-09-07 01:49:08 +00:00
}
2006-04-04 12:59:25 +00:00
fs - > vfs = NULL ;
/* If truncated, we'll be at the beginning; if not truncated, then append */
f - > seek ( fs , 0 , SEEK_END ) ;
2005-07-05 14:37:24 +00:00
} else if ( errno ! = EEXIST ) {
ast_log ( LOG_WARNING , " Unable to open file %s: %s \n " , fn , strerror ( errno ) ) ;
if ( orig_fn )
unlink ( orig_fn ) ;
1999-12-02 20:24:59 +00:00
}
2005-07-05 14:37:24 +00:00
/* if buf != NULL then fn is already free and pointing to it */
if ( ! buf )
2007-06-06 21:20:11 +00:00
ast_free ( fn ) ;
1999-12-02 20:24:59 +00:00
}
2005-07-05 14:37:24 +00:00
2007-01-26 22:55:06 +00:00
AST_RWLIST_UNLOCK ( & formats ) ;
2006-06-14 02:21:47 +00:00
if ( ! format_found )
1999-12-02 20:24:59 +00:00
ast_log ( LOG_WARNING , " No such format '%s' \n " , type ) ;
2005-07-05 14:37:24 +00:00
1999-12-02 20:24:59 +00:00
return fs ;
}
2013-01-22 15:16:20 +00:00
static void waitstream_control ( struct ast_channel * c ,
enum ast_waitstream_fr_cb_values type ,
ast_waitstream_fr_cb cb ,
int skip_ms )
{
switch ( type )
{
case AST_WAITSTREAM_CB_FASTFORWARD :
{
int eoftest ;
ast_stream_fastforward ( ast_channel_stream ( c ) , skip_ms ) ;
eoftest = fgetc ( ast_channel_stream ( c ) - > f ) ;
if ( feof ( ast_channel_stream ( c ) - > f ) ) {
ast_stream_rewind ( ast_channel_stream ( c ) , skip_ms ) ;
} else {
ungetc ( eoftest , ast_channel_stream ( c ) - > f ) ;
}
}
break ;
case AST_WAITSTREAM_CB_REWIND :
ast_stream_rewind ( ast_channel_stream ( c ) , skip_ms ) ;
break ;
default :
break ;
}
if ( cb ) {
long ms_len = ast_tellstream ( ast_channel_stream ( c ) ) / ( ast_format_rate ( & ast_channel_stream ( c ) - > fmt - > format ) / 1000 ) ;
cb ( c , ms_len , type ) ;
}
ast_test_suite_event_notify ( " PLAYBACK " , " Channel: %s \r \n "
" Control: %s \r \n "
" SkipMs: %d \r \n " ,
ast_channel_name ( c ) ,
( type = = AST_WAITSTREAM_CB_FASTFORWARD ) ? " FastForward " : " Rewind " ,
skip_ms ) ;
}
2006-04-04 12:59:25 +00:00
/*!
* \ brief the core of all waitstream ( ) functions
*/
2012-06-04 20:26:12 +00:00
static int waitstream_core ( struct ast_channel * c ,
const char * breakon ,
const char * forward ,
const char * reverse ,
int skip_ms ,
int audiofd ,
int cmdfd ,
const char * context ,
ast_waitstream_fr_cb cb )
2003-04-03 07:37:30 +00:00
{
2007-09-05 20:58:19 +00:00
const char * orig_chan_name = NULL ;
2012-06-04 20:26:12 +00:00
2007-09-05 20:58:19 +00:00
int err = 0 ;
2005-02-06 06:43:32 +00:00
if ( ! breakon )
2006-04-04 12:59:25 +00:00
breakon = " " ;
2005-02-06 06:43:32 +00:00
if ( ! forward )
2006-04-04 12:59:25 +00:00
forward = " " ;
2008-08-10 19:35:50 +00:00
if ( ! reverse )
reverse = " " ;
2007-08-10 14:17:42 +00:00
/* Switch the channel to end DTMF frame only. waitstream_core doesn't care about the start of DTMF. */
2012-03-13 18:20:34 +00:00
ast_set_flag ( ast_channel_flags ( c ) , AST_FLAG_END_DTMF_ONLY ) ;
2007-09-05 20:58:19 +00:00
2012-03-13 18:20:34 +00:00
if ( ast_test_flag ( ast_channel_flags ( c ) , AST_FLAG_MASQ_NOSTREAM ) )
2012-01-09 22:15:50 +00:00
orig_chan_name = ast_strdupa ( ast_channel_name ( c ) ) ;
2007-09-05 20:58:19 +00:00
2012-06-04 20:26:12 +00:00
if ( ast_channel_stream ( c ) & & cb ) {
long ms_len = ast_tellstream ( ast_channel_stream ( c ) ) / ( ast_format_rate ( & ast_channel_stream ( c ) - > fmt - > format ) / 1000 ) ;
cb ( c , ms_len , AST_WAITSTREAM_CB_START ) ;
}
2012-02-20 23:43:27 +00:00
while ( ast_channel_stream ( c ) ) {
2006-04-04 12:59:25 +00:00
int res ;
2007-09-05 20:58:19 +00:00
int ms ;
2012-01-09 22:15:50 +00:00
if ( orig_chan_name & & strcasecmp ( orig_chan_name , ast_channel_name ( c ) ) ) {
2007-09-05 20:58:19 +00:00
ast_stopstream ( c ) ;
err = 1 ;
break ;
}
2012-02-20 23:43:27 +00:00
ms = ast_sched_wait ( ast_channel_sched ( c ) ) ;
2007-09-05 20:58:19 +00:00
2012-03-13 18:20:34 +00:00
if ( ms < 0 & & ! ast_channel_timingfunc ( c ) ) {
2003-07-01 16:16:28 +00:00
ast_stopstream ( c ) ;
2003-02-23 06:00:11 +00:00
break ;
}
2003-06-29 21:54:58 +00:00
if ( ms < 0 )
ms = 1000 ;
2006-09-01 16:50:02 +00:00
if ( cmdfd < 0 ) {
2006-04-04 12:59:25 +00:00
res = ast_waitfor ( c , ms ) ;
if ( res < 0 ) {
ast_log ( LOG_WARNING , " Select failed (%s) \n " , strerror ( errno ) ) ;
2012-03-13 18:20:34 +00:00
ast_clear_flag ( ast_channel_flags ( c ) , AST_FLAG_END_DTMF_ONLY ) ;
2006-04-04 12:59:25 +00:00
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 ) ) ;
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ast_clear_flag ( ast_channel_flags ( c ) , AST_FLAG_END_DTMF_ONLY ) ;
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return - 1 ;
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} else if ( outfd > - 1 ) { /* this requires cmdfd set */
/* The FD we were watching has something waiting */
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ast_clear_flag ( ast_channel_flags ( c ) , AST_FLAG_END_DTMF_ONLY ) ;
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return 1 ;
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}
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/* 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 ) ;
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if ( ! fr ) {
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ast_clear_flag ( ast_channel_flags ( c ) , AST_FLAG_END_DTMF_ONLY ) ;
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return - 1 ;
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}
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switch ( fr - > frametype ) {
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case AST_FRAME_DTMF_END :
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if ( context ) {
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const char exten [ 2 ] = { fr - > subclass . integer , ' \0 ' } ;
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if ( ast_exists_extension ( c , context , exten , 1 ,
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S_COR ( ast_channel_caller ( c ) - > id . number . valid , ast_channel_caller ( c ) - > id . number . str , NULL ) ) ) {
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res = fr - > subclass . integer ;
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ast_frfree ( fr ) ;
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ast_clear_flag ( ast_channel_flags ( c ) , AST_FLAG_END_DTMF_ONLY ) ;
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return res ;
}
} else {
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res = fr - > subclass . integer ;
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if ( strchr ( forward , res ) ) {
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waitstream_control ( c , AST_WAITSTREAM_CB_FASTFORWARD , cb , skip_ms ) ;
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} else if ( strchr ( reverse , res ) ) {
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waitstream_control ( c , AST_WAITSTREAM_CB_REWIND , cb , skip_ms ) ;
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} else if ( strchr ( breakon , res ) ) {
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ast_test_suite_event_notify ( " PLAYBACK " , " Channel: %s \r \n "
" Control: %s \r \n " ,
ast_channel_name ( c ) ,
" Break " ) ;
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ast_frfree ( fr ) ;
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ast_clear_flag ( ast_channel_flags ( c ) , AST_FLAG_END_DTMF_ONLY ) ;
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return res ;
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}
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}
break ;
case AST_FRAME_CONTROL :
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switch ( fr - > subclass . integer ) {
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case AST_CONTROL_STREAM_STOP :
case AST_CONTROL_STREAM_SUSPEND :
case AST_CONTROL_STREAM_RESTART :
/* Fall-through and break out */
ast_test_suite_event_notify ( " PLAYBACK " , " Channel: %s \r \n "
" Control: %s \r \n " ,
ast_channel_name ( c ) ,
" Break " ) ;
res = fr - > subclass . integer ;
ast_frfree ( fr ) ;
ast_clear_flag ( ast_channel_flags ( c ) , AST_FLAG_END_DTMF_ONLY ) ;
return res ;
case AST_CONTROL_STREAM_REVERSE :
if ( ! skip_ms ) {
skip_ms = 3000 ;
}
waitstream_control ( c , AST_WAITSTREAM_CB_REWIND , cb , skip_ms ) ;
break ;
case AST_CONTROL_STREAM_FORWARD :
if ( ! skip_ms ) {
skip_ms = 3000 ;
}
waitstream_control ( c , AST_WAITSTREAM_CB_FASTFORWARD , cb , skip_ms ) ;
break ;
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case AST_CONTROL_HANGUP :
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case AST_CONTROL_BUSY :
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case AST_CONTROL_CONGESTION :
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ast_frfree ( fr ) ;
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ast_clear_flag ( ast_channel_flags ( c ) , AST_FLAG_END_DTMF_ONLY ) ;
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return - 1 ;
case AST_CONTROL_RINGING :
case AST_CONTROL_ANSWER :
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case AST_CONTROL_VIDUPDATE :
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case AST_CONTROL_SRCUPDATE :
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case AST_CONTROL_SRCCHANGE :
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case AST_CONTROL_HOLD :
case AST_CONTROL_UNHOLD :
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case AST_CONTROL_CONNECTED_LINE :
case AST_CONTROL_REDIRECTING :
case AST_CONTROL_AOC :
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case AST_CONTROL_UPDATE_RTP_PEER :
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case AST_CONTROL_PVT_CAUSE_CODE :
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case - 1 :
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/* Unimportant */
break ;
default :
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ast_log ( LOG_WARNING , " Unexpected control subclass '%d' \n " , fr - > subclass . integer ) ;
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}
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break ;
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case AST_FRAME_VOICE :
/* Write audio if appropriate */
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if ( audiofd > - 1 ) {
if ( write ( audiofd , fr - > data . ptr , fr - > datalen ) < 0 ) {
ast_log ( LOG_WARNING , " write() failed: %s \n " , strerror ( errno ) ) ;
}
}
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default :
/* Ignore all others */
break ;
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}
ast_frfree ( fr ) ;
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}
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ast_sched_runq ( ast_channel_sched ( c ) ) ;
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}
2007-08-10 14:17:42 +00:00
2012-03-13 18:20:34 +00:00
ast_clear_flag ( ast_channel_flags ( c ) , AST_FLAG_END_DTMF_ONLY ) ;
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return ( err | | ast_channel_softhangup_internal_flag ( c ) ) ? - 1 : 0 ;
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}
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2012-06-04 20:26:12 +00:00
int ast_waitstream_fr_w_cb ( struct ast_channel * c ,
const char * breakon ,
const char * forward ,
const char * reverse ,
int ms ,
ast_waitstream_fr_cb cb )
{
return waitstream_core ( c , breakon , forward , reverse , ms ,
- 1 /* no audiofd */ , - 1 /* no cmdfd */ , NULL /* no context */ , cb ) ;
}
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int ast_waitstream_fr ( struct ast_channel * c , const char * breakon , const char * forward , const char * reverse , int ms )
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{
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return waitstream_core ( c , breakon , forward , reverse , ms ,
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- 1 /* no audiofd */ , - 1 /* no cmdfd */ , NULL /* no context */ , NULL /* no callback */ ) ;
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}
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/*! \internal
* \ brief Clean up the return value of a waitstream call
*
* It ' s possible for a control frame to come in from an external source and break the
* playback . From a consumer of most ast_waitstream_ * function callers , this should
* appear like normal playback termination , i . e . , return 0 and not the value of the
* control frame .
*/
static int sanitize_waitstream_return ( int return_value )
{
switch ( return_value ) {
case AST_CONTROL_STREAM_STOP :
case AST_CONTROL_STREAM_SUSPEND :
case AST_CONTROL_STREAM_RESTART :
/* Fall through and set return_value to 0 */
return_value = 0 ;
break ;
default :
/* Do nothing */
break ;
}
return return_value ;
}
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int ast_waitstream ( struct ast_channel * c , const char * breakon )
{
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int res ;
res = waitstream_core ( c , breakon , NULL , NULL , 0 , - 1 , - 1 , NULL , NULL /* no callback */ ) ;
return sanitize_waitstream_return ( res ) ;
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}
int ast_waitstream_full ( struct ast_channel * c , const char * breakon , int audiofd , int cmdfd )
{
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int res ;
res = waitstream_core ( c , breakon , NULL , NULL , 0 ,
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audiofd , cmdfd , NULL /* no context */ , NULL /* no callback */ ) ;
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return sanitize_waitstream_return ( res ) ;
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}
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int ast_waitstream_exten ( struct ast_channel * c , const char * context )
{
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int res ;
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/* Waitstream, with return in the case of a valid 1 digit extension */
/* in the current or specified context being pressed */
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if ( ! context )
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context = ast_channel_context ( c ) ;
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res = waitstream_core ( c , NULL , NULL , NULL , 0 ,
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- 1 , - 1 , context , NULL /* no callback */ ) ;
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return sanitize_waitstream_return ( res ) ;
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}
2006-04-21 20:28:32 +00:00
/*
* 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 .
*/
2006-11-17 23:18:51 +00:00
int ast_stream_and_wait ( struct ast_channel * chan , const char * file , const char * digits )
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{
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int res = 0 ;
if ( ! ast_strlen_zero ( file ) ) {
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ast_test_suite_event_notify ( " PLAYBACK " , " Message: %s \r \n Channel: %s " , file , ast_channel_name ( chan ) ) ;
2012-01-24 20:12:09 +00:00
res = ast_streamfile ( chan , file , ast_channel_language ( chan ) ) ;
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if ( ! res ) {
res = ast_waitstream ( chan , digits ) ;
}
}
return res ;
2012-03-22 19:51:16 +00:00
}
2006-04-21 20:28:32 +00:00
2009-11-30 21:31:55 +00:00
char * ast_format_str_reduce ( char * fmts )
{
2011-02-03 16:22:10 +00:00
struct ast_format_def * f ;
struct ast_format_def * fmts_ptr [ AST_MAX_FORMATS ] ;
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char * fmts_str [ AST_MAX_FORMATS ] ;
char * stringp , * type ;
char * orig = fmts ;
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int i , j , x , first , found = 0 ;
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int len = strlen ( fmts ) + 1 ;
2010-01-08 19:32:11 +00:00
int res ;
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if ( AST_RWLIST_RDLOCK ( & formats ) ) {
ast_log ( LOG_WARNING , " Unable to lock format list \n " ) ;
return NULL ;
}
stringp = ast_strdupa ( fmts ) ;
for ( x = 0 ; ( type = strsep ( & stringp , " | " ) ) & & x < AST_MAX_FORMATS ; x + + ) {
AST_RWLIST_TRAVERSE ( & formats , f , list ) {
if ( exts_compare ( f - > exts , type ) ) {
found = 1 ;
break ;
}
}
fmts_str [ x ] = type ;
if ( found ) {
fmts_ptr [ x ] = f ;
} else {
fmts_ptr [ x ] = NULL ;
}
}
AST_RWLIST_UNLOCK ( & formats ) ;
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first = 1 ;
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for ( i = 0 ; i < x ; i + + ) {
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/* ignore invalid entries */
if ( ! fmts_ptr [ i ] ) {
ast_log ( LOG_WARNING , " ignoring unknown format '%s' \n " , fmts_str [ i ] ) ;
continue ;
}
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/* special handling for the first entry */
2009-12-01 15:47:36 +00:00
if ( first ) {
2010-01-08 19:32:11 +00:00
res = snprintf ( fmts , len , " %s " , fmts_str [ i ] ) ;
fmts + = res ;
len - = res ;
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first = 0 ;
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continue ;
}
found = 0 ;
for ( j = 0 ; j < i ; j + + ) {
/* this is a duplicate */
if ( fmts_ptr [ j ] = = fmts_ptr [ i ] ) {
found = 1 ;
break ;
}
}
if ( ! found ) {
2010-01-08 19:32:11 +00:00
res = snprintf ( fmts , len , " |%s " , fmts_str [ i ] ) ;
fmts + = res ;
len - = res ;
2009-11-30 21:31:55 +00:00
}
}
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if ( first ) {
ast_log ( LOG_WARNING , " no known formats found in format list (%s) \n " , orig ) ;
return NULL ;
}
2009-11-30 21:31:55 +00:00
return orig ;
}
2007-10-11 19:03:06 +00:00
static char * handle_cli_core_show_file_formats ( struct ast_cli_entry * e , int cmd , struct ast_cli_args * a )
2004-06-30 03:22:29 +00:00
{
# define FORMAT "%-10s %-10s %-20s\n"
# define FORMAT2 "%-10s %-10s %-20s\n"
2011-02-03 16:22:10 +00:00
struct ast_format_def * f ;
2005-08-23 15:43:47 +00:00
int count_fmt = 0 ;
2007-10-11 19:03:06 +00:00
switch ( cmd ) {
case CLI_INIT :
e - > command = " core show file formats " ;
e - > usage =
" Usage: core show file formats \n "
" Displays currently registered file formats (if any). \n " ;
return NULL ;
case CLI_GENERATE :
return NULL ;
}
if ( a - > argc ! = 4 )
return CLI_SHOWUSAGE ;
ast_cli ( a - > fd , FORMAT , " Format " , " Name " , " Extensions " ) ;
ast_cli ( a - > fd , FORMAT , " ------ " , " ---- " , " ---------- " ) ;
2004-06-30 03:22:29 +00:00
2007-01-26 22:55:06 +00:00
AST_RWLIST_RDLOCK ( & formats ) ;
AST_RWLIST_TRAVERSE ( & formats , f , list ) {
2011-02-03 16:22:10 +00:00
ast_cli ( a - > fd , FORMAT2 , ast_getformatname ( & f - > format ) , f - > name , f - > exts ) ;
2005-08-23 15:43:47 +00:00
count_fmt + + ;
2006-01-09 21:30:46 +00:00
}
2007-01-26 22:55:06 +00:00
AST_RWLIST_UNLOCK ( & formats ) ;
2007-10-11 19:03:06 +00:00
ast_cli ( a - > fd , " %d file formats registered. \n " , count_fmt ) ;
return CLI_SUCCESS ;
2005-07-15 16:13:26 +00:00
# undef FORMAT
# undef FORMAT2
2004-06-30 03:22:29 +00:00
}
2013-06-24 13:49:20 +00:00
const struct ast_format * ast_get_format_for_file_ext ( const char * file_ext )
{
struct ast_format_def * f ;
SCOPED_RDLOCK ( lock , & formats . lock ) ;
AST_RWLIST_TRAVERSE ( & formats , f , list ) {
if ( exts_compare ( f - > exts , file_ext ) ) {
return & f - > format ;
}
}
return NULL ;
}
2009-06-15 17:34:30 +00:00
static struct ast_cli_entry cli_file [ ] = {
2007-10-22 20:05:18 +00:00
AST_CLI_DEFINE ( handle_cli_core_show_file_formats , " Displays file formats " )
2004-06-30 03:22:29 +00:00
} ;
2012-12-11 22:03:23 +00:00
static void file_shutdown ( void )
{
ast_cli_unregister_multiple ( cli_file , ARRAY_LEN ( cli_file ) ) ;
2013-06-24 13:49:20 +00:00
STASIS_MESSAGE_TYPE_CLEANUP ( ast_format_register_type ) ;
STASIS_MESSAGE_TYPE_CLEANUP ( ast_format_unregister_type ) ;
2012-12-11 22:03:23 +00:00
}
2004-06-30 03:22:29 +00:00
int ast_file_init ( void )
{
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STASIS_MESSAGE_TYPE_INIT ( ast_format_register_type ) ;
STASIS_MESSAGE_TYPE_INIT ( ast_format_unregister_type ) ;
2008-12-05 10:31:25 +00:00
ast_cli_register_multiple ( cli_file , ARRAY_LEN ( cli_file ) ) ;
2012-12-11 22:03:23 +00:00
ast_register_atexit ( file_shutdown ) ;
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return 0 ;
}