File: /home/houseofayushjain/public_html/wp-content/plugins/seraphinite-accelerator/Cmn/Fs.php
<?php
namespace seraph_accel;
if( !defined( 'ABSPATH' ) )
exit;
class Fs
{
const MimeTypeDef = '';
const BufSizeDef = 4096;
static function StreamOutFileContent( $fileName, $mimeType = Fs::MimeTypeDef, $bHeadOnly = false, $bufSize = Fs::BufSizeDef, $asAttachment = false, $nTtl = 0, $bNotMdf = true )
{
$size = @filesize( $fileName );
$time = @filemtime( $fileName );
if( $size === false || $time === false )
{
http_response_code( 404 );
return;
}
if( empty( $mimeType ) )
$mimeType = Fs::GetMimeContentType( $fileName );
$begin = 0;
$end = $size;
$isRange = false;
if( isset( $_SERVER[ 'HTTP_RANGE' ] ) )
{
$range = str_replace( ' ', '', $_SERVER[ 'HTTP_RANGE' ] );
$pos = strpos( $range, 'bytes=' );
if( is_int( $pos ) )
{
$isRange = true;
$range = substr( $range, $pos + strlen( 'bytes=' ) );
$pos = strpos( $range, '-' );
if( is_int( $pos ) )
{
$begin = intval( substr( $range, 0, $pos ) );
$range = substr( $range, $pos + 1 );
if( strlen( $range ) )
$end = intval( $range );
}
else
$begin = intval( $range );
}
}
header( 'Content-Type: ' . $mimeType );
header( 'Cache-Control: public, ' . ( $nTtl ? ( 'max-age=' . $nTtl ) : 'must-revalidate, max-age=0' ) );
if( !$nTtl )
header( 'Pragma: no-cache' );
header( 'Accept-Ranges: bytes' );
header( 'Last-Modified: ' . gmdate( 'D, d M Y H:i:s', $time ) . ' GMT' );
if( $isRange )
header( 'Content-Range: bytes ' . $begin . '-' . $end . '/' . $size );
if( $asAttachment )
header( 'Content-Disposition: attachment;filename="' . basename( $fileName ) . '"' );
if( $bNotMdf && isset( $_SERVER[ 'HTTP_IF_MODIFIED_SINCE' ] ) )
{
if( strtotime( preg_replace( '@;.*$@', '', $_SERVER[ 'HTTP_IF_MODIFIED_SINCE' ] ) ) == $time )
{
http_response_code( 304 );
return;
}
}
$file = @fopen( $fileName, 'rb' );
if( !$file )
{
http_response_code( 599 );
return;
}
if( $isRange )
http_response_code( 206 );
else
http_response_code( 200 );
if( !$bHeadOnly )
{
header( 'Content-Length: ' . ( $end - $begin ) );
if( $isRange )
{
$cur = $begin;
if( $begin )
@fseek( $file, $begin, 0 );
$fileOut = @fopen( 'php://output', 'w' );
if( !$fileOut )
{
@fclose( $file );
http_response_code( 599 );
return;
}
while( !@feof( $file ) && $cur < $end && ( @connection_status() == 0 ) )
{
$nRead = min( $bufSize, $end - $cur );
@fwrite( $fileOut, @fread( $file, $nRead ) );
$cur += $nRead;
}
@fclose( $fileOut );
}
else
@readfile( $fileName );
}
@fclose( $file );
}
static function StreamCopy( $stmSrc, $stmDst, $bufSize = 4096 )
{
while( !@feof( $stmSrc ) )
{
$nRead = $bufSize;
$buf = @fread( $stmSrc, $nRead );
if( $buf === false )
return( Gen::E_INTERNAL );
if( @fwrite( $stmDst, $buf, $nRead ) === false )
return( Gen::E_INTERNAL );
}
return( Gen::S_OK );
}
static function CreateEmptyFile( $filePathName, $overwrite = true )
{
$f = @fopen( $filePathName, $overwrite ? 'wb' : 'xb' );
if( $f === false )
return( Gen::E_INTERNAL );
@fclose( $f );
return( Gen::S_OK );
}
static $mime_types = array(
'ai' => 'application/postscript',
'aif' => 'audio/x-aiff',
'aifc' => 'audio/x-aiff',
'aiff' => 'audio/x-aiff',
'asc' => 'text/plain',
'asf' => 'video/x-ms-asf',
'asx' => 'video/x-ms-asf',
'au' => 'audio/basic',
'avi' => 'video/x-msvideo',
'avif' => 'image/avif',
'bcpio' => 'application/x-bcpio',
'bmp' => 'image/bmp',
'bz2' => 'application/x-bzip2',
'cdf' => 'application/x-netcdf',
'chrt' => 'application/x-kchart',
'class' => 'application/octet-stream',
'cpio' => 'application/x-cpio',
'cpt' => 'application/mac-compactpro',
'csh' => 'application/x-csh',
'css' => 'text/css',
'dcr' => 'application/x-director',
'dir' => 'application/x-director',
'djv' => 'image/vnd.djvu',
'djvu' => 'image/vnd.djvu',
'dll' => 'application/octet-stream',
'dms' => 'application/octet-stream',
'doc' => 'application/msword',
'dvi' => 'application/x-dvi',
'dxr' => 'application/x-director',
'eps' => 'application/postscript',
'etx' => 'text/x-setext',
'exe' => 'application/octet-stream',
'ez' => 'application/andrew-inset',
'flv' => 'video/x-flv',
'gif' => 'image/gif',
'gtar' => 'application/x-gtar',
'gz' => 'application/x-gzip',
'hdf' => 'application/x-hdf',
'hqx' => 'application/mac-binhex40',
'htm' => 'text/html',
'html' => 'text/html',
'ice' => 'x-conference/x-cooltalk',
'ief' => 'image/ief',
'iges' => 'model/iges',
'igs' => 'model/iges',
'img' => 'application/octet-stream',
'iso' => 'application/octet-stream',
'jad' => 'text/vnd.sun.j2me.app-descriptor',
'jar' => 'application/x-java-archive',
'jnlp' => 'application/x-java-jnlp-file',
'jpe' => 'image/jpeg',
'jpeg' => 'image/jpeg',
'jpg' => 'image/jpeg',
'js' => 'application/javascript',
'json' => 'application/json',
'kar' => 'audio/midi',
'kil' => 'application/x-killustrator',
'kpr' => 'application/x-kpresenter',
'kpt' => 'application/x-kpresenter',
'ksp' => 'application/x-kspread',
'kwd' => 'application/x-kword',
'kwt' => 'application/x-kword',
'latex' => 'application/x-latex',
'lha' => 'application/octet-stream',
'lzh' => 'application/octet-stream',
'm3u' => 'audio/x-mpegurl',
'man' => 'application/x-troff-man',
'me' => 'application/x-troff-me',
'mesh' => 'model/mesh',
'mid' => 'audio/midi',
'midi' => 'audio/midi',
'mif' => 'application/vnd.mif',
'mov' => 'video/quicktime',
'movie' => 'video/x-sgi-movie',
'mp2' => 'audio/mpeg',
'mp3' => 'audio/mpeg',
'mpe' => 'video/mpeg',
'mpeg' => 'video/mpeg',
'mpg' => 'video/mpeg',
'mpga' => 'audio/mpeg',
'ms' => 'application/x-troff-ms',
'msh' => 'model/mesh',
'mxu' => 'video/vnd.mpegurl',
'nc' => 'application/x-netcdf',
'odb' => 'application/vnd.oasis.opendocument.database',
'odc' => 'application/vnd.oasis.opendocument.chart',
'odf' => 'application/vnd.oasis.opendocument.formula',
'odg' => 'application/vnd.oasis.opendocument.graphics',
'odi' => 'application/vnd.oasis.opendocument.image',
'odm' => 'application/vnd.oasis.opendocument.text-master',
'odp' => 'application/vnd.oasis.opendocument.presentation',
'ods' => 'application/vnd.oasis.opendocument.spreadsheet',
'odt' => 'application/vnd.oasis.opendocument.text',
'ogg' => 'application/ogg',
'otg' => 'application/vnd.oasis.opendocument.graphics-template',
'oth' => 'application/vnd.oasis.opendocument.text-web',
'otp' => 'application/vnd.oasis.opendocument.presentation-template',
'ots' => 'application/vnd.oasis.opendocument.spreadsheet-template',
'ott' => 'application/vnd.oasis.opendocument.text-template',
'pbm' => 'image/x-portable-bitmap',
'pdb' => 'chemical/x-pdb',
'pdf' => 'application/pdf',
'pgm' => 'image/x-portable-graymap',
'pgn' => 'application/x-chess-pgn',
'png' => 'image/png',
'pnm' => 'image/x-portable-anymap',
'ppm' => 'image/x-portable-pixmap',
'ppt' => 'application/vnd.ms-powerpoint',
'ps' => 'application/postscript',
'qt' => 'video/quicktime',
'ra' => 'audio/x-realaudio',
'ram' => 'audio/x-pn-realaudio',
'ras' => 'image/x-cmu-raster',
'rgb' => 'image/x-rgb',
'rm' => 'audio/x-pn-realaudio',
'roff' => 'application/x-troff',
'rpm' => 'application/x-rpm',
'rss' => 'application/rss+xml',
'rtf' => 'text/rtf',
'rtx' => 'text/richtext',
'sgm' => 'text/sgml',
'sgml' => 'text/sgml',
'sh' => 'application/x-sh',
'shar' => 'application/x-shar',
'silo' => 'model/mesh',
'sis' => 'application/vnd.symbian.install',
'sit' => 'application/x-stuffit',
'skd' => 'application/x-koan',
'skm' => 'application/x-koan',
'skp' => 'application/x-koan',
'skt' => 'application/x-koan',
'smi' => 'application/smil',
'smil' => 'application/smil',
'snd' => 'audio/basic',
'so' => 'application/octet-stream',
'spl' => 'application/x-futuresplash',
'src' => 'application/x-wais-source',
'stc' => 'application/vnd.sun.xml.calc.template',
'std' => 'application/vnd.sun.xml.draw.template',
'sti' => 'application/vnd.sun.xml.impress.template',
'stw' => 'application/vnd.sun.xml.writer.template',
'sv4cpio' => 'application/x-sv4cpio',
'sv4crc' => 'application/x-sv4crc',
'svg' => 'image/svg+xml',
'swf' => 'application/x-shockwave-flash',
'sxc' => 'application/vnd.sun.xml.calc',
'sxd' => 'application/vnd.sun.xml.draw',
'sxg' => 'application/vnd.sun.xml.writer.global',
'sxi' => 'application/vnd.sun.xml.impress',
'sxm' => 'application/vnd.sun.xml.math',
'sxw' => 'application/vnd.sun.xml.writer',
't' => 'application/x-troff',
'tar' => 'application/x-tar',
'tcl' => 'application/x-tcl',
'tex' => 'application/x-tex',
'texi' => 'application/x-texinfo',
'texinfo' => 'application/x-texinfo',
'tgz' => 'application/x-gzip',
'tif' => 'image/tiff',
'tiff' => 'image/tiff',
'torrent' => 'application/x-bittorrent',
'tr' => 'application/x-troff',
'tsv' => 'text/tab-separated-values',
'txt' => 'text/plain',
'ustar' => 'application/x-ustar',
'vcd' => 'application/x-cdlink',
'vrml' => 'model/vrml',
'wav' => 'audio/x-wav',
'wax' => 'audio/x-ms-wax',
'wbmp' => 'image/vnd.wap.wbmp',
'wbxml' => 'application/vnd.wap.wbxml',
'webp' => 'image/webp',
'wm' => 'video/x-ms-wm',
'wma' => 'audio/x-ms-wma',
'wml' => 'text/vnd.wap.wml',
'wmlc' => 'application/vnd.wap.wmlc',
'wmls' => 'text/vnd.wap.wmlscript',
'wmlsc' => 'application/vnd.wap.wmlscriptc',
'wmv' => 'video/x-ms-wmv',
'wmx' => 'video/x-ms-wmx',
'wrl' => 'model/vrml',
'wvx' => 'video/x-ms-wvx',
'xbm' => 'image/x-xbitmap',
'xht' => 'application/xhtml+xml',
'xhtml' => 'application/xhtml+xml',
'xls' => 'application/vnd.ms-excel',
'xpm' => 'image/x-xpixmap',
'xsl' => 'text/xml',
'xwd' => 'image/x-xwindowdump',
'xyz' => 'chemical/x-xyz',
'zip' => 'application/zip',
'bin' => 'application/octet-stream',
'xml' => 'text/xml',
);
static $mime_types_rev = array(
'font/eot' => 'eot',
'application/vnd.ms-fontobject' => 'eot',
'font/opentype' => 'otf',
'application/font-opentype' => 'otf',
'application/x-font-opentype' => 'otf',
'application/font-ttf' => 'ttf',
'application/x-font-ttf' => 'ttf',
'application/x-font-truetype' => 'ttf',
'font/woff' => 'woff',
'application/font-woff' => 'woff',
'application/x-font-woff' => 'woff',
'application/font-woff2' => 'woff2',
'application/x-font-woff2' => 'woff2',
'application/octet-stream' => 'bin',
'application/x-javascript' => 'js',
'text/javascript' => 'js',
);
static function GetMimeContentType( $filename )
{
static $aMime = null;
if( !$aMime )
$aMime = array_merge( self::$mime_types, array_flip( self::$mime_types_rev ) );
$mimeType = ($aMime[ strtolower( Gen::GetFileExt( $filename ) ) ]??null);
if( empty( $mimeType ) )
$mimeType = self::_GetMimeContentType( $filename );
if( empty( $mimeType ) )
$mimeType = 'application/octet-stream';
return( $mimeType );
}
static private function _GetMimeContentType( $filename )
{
if( function_exists( 'mime_content_type' ) )
return( @mime_content_type( $filename ) );
if( function_exists( 'finfo_file' ) && function_exists( 'finfo_open' ) && function_exists( 'finfo_close' ) )
{
$fileinfo = @finfo_open( FILEINFO_MIME );
$mime_type = @finfo_file( $fileinfo, $filename );
@finfo_close( $fileinfo );
return( $mime_type );
}
}
static function GetFileTypeFromMimeContentType( $mimeType, $def = null )
{
static $aMimeRev = null;
if( $aMimeRev === null )
$aMimeRev = array_merge( self::$mime_types_rev, array_flip( self::$mime_types ) );
return( ($aMimeRev[ $mimeType ]??$def) );
}
}