285 lines
10 KiB
PHP
285 lines
10 KiB
PHP
<?php
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/**
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* Methods to display or download any type of file
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*
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* PHP versions 4 and 5
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*
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
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*
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* Licensed under The MIT License
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @package cake
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* @subpackage cake.cake.libs.view
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* @since CakePHP(tm) v 1.2.0.5714
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* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
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*/
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App::import('View', 'View', false);
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class MediaView extends View {
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/**
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* Holds known mime type mappings
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*
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* @var array
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* @access public
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*/
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var $mimeType = array(
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'ai' => 'application/postscript', 'bcpio' => 'application/x-bcpio', 'bin' => 'application/octet-stream',
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'ccad' => 'application/clariscad', 'cdf' => 'application/x-netcdf', 'class' => 'application/octet-stream',
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'cpio' => 'application/x-cpio', 'cpt' => 'application/mac-compactpro', 'csh' => 'application/x-csh',
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'csv' => 'application/csv', 'dcr' => 'application/x-director', 'dir' => 'application/x-director',
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'dms' => 'application/octet-stream', 'doc' => 'application/msword', 'drw' => 'application/drafting',
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'dvi' => 'application/x-dvi', 'dwg' => 'application/acad', 'dxf' => 'application/dxf',
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'dxr' => 'application/x-director', 'eot' => 'application/vnd.ms-fontobject', 'eps' => 'application/postscript',
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'exe' => 'application/octet-stream', 'ez' => 'application/andrew-inset',
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'flv' => 'video/x-flv', 'gtar' => 'application/x-gtar', 'gz' => 'application/x-gzip',
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'bz2' => 'application/x-bzip', '7z' => 'application/x-7z-compressed', 'hdf' => 'application/x-hdf',
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'hqx' => 'application/mac-binhex40', 'ico' => 'image/vnd.microsoft.icon', 'ips' => 'application/x-ipscript',
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'ipx' => 'application/x-ipix', 'js' => 'application/x-javascript', 'latex' => 'application/x-latex',
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'lha' => 'application/octet-stream', 'lsp' => 'application/x-lisp', 'lzh' => 'application/octet-stream',
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'man' => 'application/x-troff-man', 'me' => 'application/x-troff-me', 'mif' => 'application/vnd.mif',
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'ms' => 'application/x-troff-ms', 'nc' => 'application/x-netcdf', 'oda' => 'application/oda',
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'otf' => 'font/otf', 'pdf' => 'application/pdf',
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'pgn' => 'application/x-chess-pgn', 'pot' => 'application/mspowerpoint', 'pps' => 'application/mspowerpoint',
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'ppt' => 'application/mspowerpoint', 'ppz' => 'application/mspowerpoint', 'pre' => 'application/x-freelance',
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'prt' => 'application/pro_eng', 'ps' => 'application/postscript', 'roff' => 'application/x-troff',
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'scm' => 'application/x-lotusscreencam', 'set' => 'application/set', 'sh' => 'application/x-sh',
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'shar' => 'application/x-shar', 'sit' => 'application/x-stuffit', 'skd' => 'application/x-koan',
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'skm' => 'application/x-koan', 'skp' => 'application/x-koan', 'skt' => 'application/x-koan',
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'smi' => 'application/smil', 'smil' => 'application/smil', 'sol' => 'application/solids',
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'spl' => 'application/x-futuresplash', 'src' => 'application/x-wais-source', 'step' => 'application/STEP',
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'stl' => 'application/SLA', 'stp' => 'application/STEP', 'sv4cpio' => 'application/x-sv4cpio',
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'sv4crc' => 'application/x-sv4crc', 'svg' => 'image/svg+xml', 'svgz' => 'image/svg+xml',
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'swf' => 'application/x-shockwave-flash', 't' => 'application/x-troff',
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'tar' => 'application/x-tar', 'tcl' => 'application/x-tcl', 'tex' => 'application/x-tex',
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'texi' => 'application/x-texinfo', 'texinfo' => 'application/x-texinfo', 'tr' => 'application/x-troff',
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'tsp' => 'application/dsptype', 'ttf' => 'font/ttf',
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'unv' => 'application/i-deas', 'ustar' => 'application/x-ustar',
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'vcd' => 'application/x-cdlink', 'vda' => 'application/vda', 'xlc' => 'application/vnd.ms-excel',
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'xll' => 'application/vnd.ms-excel', 'xlm' => 'application/vnd.ms-excel', 'xls' => 'application/vnd.ms-excel',
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'xlw' => 'application/vnd.ms-excel', 'zip' => 'application/zip', 'aif' => 'audio/x-aiff', 'aifc' => 'audio/x-aiff',
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'aiff' => 'audio/x-aiff', 'au' => 'audio/basic', 'kar' => 'audio/midi', 'mid' => 'audio/midi',
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'midi' => 'audio/midi', 'mp2' => 'audio/mpeg', 'mp3' => 'audio/mpeg', 'mpga' => 'audio/mpeg',
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'ra' => 'audio/x-realaudio', 'ram' => 'audio/x-pn-realaudio', 'rm' => 'audio/x-pn-realaudio',
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'rpm' => 'audio/x-pn-realaudio-plugin', 'snd' => 'audio/basic', 'tsi' => 'audio/TSP-audio', 'wav' => 'audio/x-wav',
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'asc' => 'text/plain', 'c' => 'text/plain', 'cc' => 'text/plain', 'css' => 'text/css', 'etx' => 'text/x-setext',
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'f' => 'text/plain', 'f90' => 'text/plain', 'h' => 'text/plain', 'hh' => 'text/plain', 'htm' => 'text/html',
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'html' => 'text/html', 'm' => 'text/plain', 'rtf' => 'text/rtf', 'rtx' => 'text/richtext', 'sgm' => 'text/sgml',
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'sgml' => 'text/sgml', 'tsv' => 'text/tab-separated-values', 'tpl' => 'text/template', 'txt' => 'text/plain',
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'xml' => 'text/xml', 'avi' => 'video/x-msvideo', 'fli' => 'video/x-fli', 'mov' => 'video/quicktime',
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'movie' => 'video/x-sgi-movie', 'mpe' => 'video/mpeg', 'mpeg' => 'video/mpeg', 'mpg' => 'video/mpeg',
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'qt' => 'video/quicktime', 'viv' => 'video/vnd.vivo', 'vivo' => 'video/vnd.vivo', 'gif' => 'image/gif',
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'ief' => 'image/ief', 'jpe' => 'image/jpeg', 'jpeg' => 'image/jpeg', 'jpg' => 'image/jpeg',
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'pbm' => 'image/x-portable-bitmap', 'pgm' => 'image/x-portable-graymap', 'png' => 'image/png',
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'pnm' => 'image/x-portable-anymap', 'ppm' => 'image/x-portable-pixmap', 'ras' => 'image/cmu-raster',
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'rgb' => 'image/x-rgb', 'tif' => 'image/tiff', 'tiff' => 'image/tiff', 'xbm' => 'image/x-xbitmap',
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'xpm' => 'image/x-xpixmap', 'xwd' => 'image/x-xwindowdump', 'ice' => 'x-conference/x-cooltalk',
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'iges' => 'model/iges', 'igs' => 'model/iges', 'mesh' => 'model/mesh', 'msh' => 'model/mesh',
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'silo' => 'model/mesh', 'vrml' => 'model/vrml', 'wrl' => 'model/vrml',
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'mime' => 'www/mime', 'pdb' => 'chemical/x-pdb', 'xyz' => 'chemical/x-pdb');
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/**
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* Holds headers sent to browser before rendering media
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*
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* @var array
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* @access protected
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*/
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var $_headers = array();
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/**
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* Constructor
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*
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* @param object $controller
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*/
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function __construct(&$controller) {
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parent::__construct($controller);
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}
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/**
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* Display or download the given file
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*
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* @return unknown
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*/
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function render() {
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$name = $download = $extension = $id = $modified = $path = $size = $cache = $mimeType = null;
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extract($this->viewVars, EXTR_OVERWRITE);
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if ($size) {
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$id = $id . '_' . $size;
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}
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if (is_dir($path)) {
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$path = $path . $id;
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} else {
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$path = APP . $path . $id;
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}
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if (!file_exists($path)) {
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header('Content-Type: text/html');
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$this->cakeError('error404');
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}
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if (is_null($name)) {
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$name = $id;
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}
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if (is_array($mimeType)) {
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$this->mimeType = array_merge($this->mimeType, $mimeType);
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}
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if (isset($extension) && isset($this->mimeType[$extension]) && connection_status() == 0) {
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$chunkSize = 8192;
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$buffer = '';
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$fileSize = @filesize($path);
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$handle = fopen($path, 'rb');
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if ($handle === false) {
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return false;
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}
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if (!empty($modified)) {
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$modified = gmdate('D, d M Y H:i:s', strtotime($modified, time())) . ' GMT';
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} else {
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$modified = gmdate('D, d M Y H:i:s') . ' GMT';
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}
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if ($download) {
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$contentTypes = array('application/octet-stream');
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$agent = env('HTTP_USER_AGENT');
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if (preg_match('%Opera(/| )([0-9].[0-9]{1,2})%', $agent)) {
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$contentTypes[0] = 'application/octetstream';
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} else if (preg_match('/MSIE ([0-9].[0-9]{1,2})/', $agent)) {
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$contentTypes[0] = 'application/force-download';
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array_merge($contentTypes, array(
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'application/octet-stream',
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'application/download'
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));
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}
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foreach($contentTypes as $contentType) {
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$this->_header('Content-Type: ' . $contentType);
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}
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$this->_header(array(
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'Content-Disposition: attachment; filename="' . $name . '.' . $extension . '";',
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'Expires: 0',
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'Accept-Ranges: bytes',
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'Cache-Control: private' => false,
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'Pragma: private'));
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$httpRange = env('HTTP_RANGE');
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if (isset($httpRange)) {
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list($toss, $range) = explode('=', $httpRange);
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$size = $fileSize - 1;
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$length = $fileSize - $range;
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$this->_header(array(
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'HTTP/1.1 206 Partial Content',
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'Content-Length: ' . $length,
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'Content-Range: bytes ' . $range . $size . '/' . $fileSize));
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fseek($handle, $range);
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} else {
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$this->_header('Content-Length: ' . $fileSize);
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}
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} else {
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$this->_header('Date: ' . gmdate('D, d M Y H:i:s', time()) . ' GMT');
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if ($cache) {
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if (!is_numeric($cache)) {
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$cache = strtotime($cache) - time();
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}
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$this->_header(array(
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'Cache-Control: max-age=' . $cache,
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'Expires: ' . gmdate('D, d M Y H:i:s', time() + $cache) . ' GMT',
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'Pragma: cache'));
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} else {
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$this->_header(array(
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'Cache-Control: must-revalidate, post-check=0, pre-check=0',
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'Pragma: no-cache'));
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}
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$this->_header(array(
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'Last-Modified: ' . $modified,
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'Content-Type: ' . $this->mimeType[$extension],
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'Content-Length: ' . $fileSize));
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}
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$this->_output();
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$this->_clearBuffer();
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while (!feof($handle)) {
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if (!$this->_isActive()) {
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fclose($handle);
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return false;
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}
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set_time_limit(0);
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$buffer = fread($handle, $chunkSize);
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echo $buffer;
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$this->_flushBuffer();
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}
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fclose($handle);
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return;
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}
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return false;
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}
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/**
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* Method to set headers
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* @param mixed $header
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* @param boolean $boolean
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* @access protected
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*/
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function _header($header, $boolean = true) {
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if (is_array($header)) {
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foreach ($header as $string => $boolean) {
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if (is_numeric($string)) {
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$this->_headers[] = array($boolean => true);
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} else {
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$this->_headers[] = array($string => $boolean);
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}
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}
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return;
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}
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$this->_headers[] = array($header => $boolean);
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return;
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}
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/**
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* Method to output headers
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* @access protected
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*/
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function _output() {
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foreach ($this->_headers as $key => $value) {
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$header = key($value);
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header($header, $value[$header]);
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}
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}
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/**
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* Returns true if connection is still active
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* @return boolean
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* @access protected
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*/
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function _isActive() {
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return connection_status() == 0 && !connection_aborted();
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}
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/**
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* Clears the contents of the topmost output buffer and discards them
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* @return boolean
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* @access protected
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*/
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function _clearBuffer() {
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return @ob_end_clean();
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}
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/**
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* Flushes the contents of the output buffer
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* @access protected
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*/
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function _flushBuffer() {
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@flush();
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@ob_flush();
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}
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}
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