cake/libs/view/media.php
| 1 | <?php |
|---|---|
| 2 | /** |
| 3 | * Methods to display or download any type of file |
| 4 | * |
| 5 | * PHP versions 4 and 5 |
| 6 | * |
| 7 | * CakePHP(tm) : Rapid Development Framework (http://cakephp.org) |
| 8 | * Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org) |
| 9 | * |
| 10 | * Licensed under The MIT License |
| 11 | * Redistributions of files must retain the above copyright notice. |
| 12 | * |
| 13 | * @copyright Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org) |
| 14 | * @link http://cakephp.org CakePHP(tm) Project |
| 15 | * @package cake |
| 16 | * @subpackage cake.cake.libs.view |
| 17 | * @since CakePHP(tm) v 1.2.0.5714 |
| 18 | * @license MIT License (http://www.opensource.org/licenses/mit-license.php) |
| 19 | */ |
| 20 | App::import('View', 'View', false); |
| 21 | |
| 22 | class MediaView extends View { |
| 23 | |
| 24 | /** |
| 25 | * Holds known mime type mappings |
| 26 | * |
| 27 | * @var array |
| 28 | * @access public |
| 29 | */ |
| 30 | var $mimeType = array( |
| 31 | 'ai' => 'application/postscript', 'bcpio' => 'application/x-bcpio', 'bin' => 'application/octet-stream', |
| 32 | 'ccad' => 'application/clariscad', 'cdf' => 'application/x-netcdf', 'class' => 'application/octet-stream', |
| 33 | 'cpio' => 'application/x-cpio', 'cpt' => 'application/mac-compactpro', 'csh' => 'application/x-csh', |
| 34 | 'csv' => 'application/csv', 'dcr' => 'application/x-director', 'dir' => 'application/x-director', |
| 35 | 'dms' => 'application/octet-stream', 'doc' => 'application/msword', 'drw' => 'application/drafting', |
| 36 | 'dvi' => 'application/x-dvi', 'dwg' => 'application/acad', 'dxf' => 'application/dxf', |
| 37 | 'dxr' => 'application/x-director', 'eot' => 'application/vnd.ms-fontobject', 'eps' => 'application/postscript', |
| 38 | 'exe' => 'application/octet-stream', 'ez' => 'application/andrew-inset', |
| 39 | 'flv' => 'video/x-flv', 'gtar' => 'application/x-gtar', 'gz' => 'application/x-gzip', |
| 40 | 'bz2' => 'application/x-bzip', '7z' => 'application/x-7z-compressed', 'hdf' => 'application/x-hdf', |
| 41 | 'hqx' => 'application/mac-binhex40', 'ico' => 'image/vnd.microsoft.icon', 'ips' => 'application/x-ipscript', |
| 42 | 'ipx' => 'application/x-ipix', 'js' => 'application/x-javascript', 'latex' => 'application/x-latex', |
| 43 | 'lha' => 'application/octet-stream', 'lsp' => 'application/x-lisp', 'lzh' => 'application/octet-stream', |
| 44 | 'man' => 'application/x-troff-man', 'me' => 'application/x-troff-me', 'mif' => 'application/vnd.mif', |
| 45 | 'ms' => 'application/x-troff-ms', 'nc' => 'application/x-netcdf', 'oda' => 'application/oda', |
| 46 | 'otf' => 'font/otf', 'pdf' => 'application/pdf', |
| 47 | 'pgn' => 'application/x-chess-pgn', 'pot' => 'application/mspowerpoint', 'pps' => 'application/mspowerpoint', |
| 48 | 'ppt' => 'application/mspowerpoint', 'ppz' => 'application/mspowerpoint', 'pre' => 'application/x-freelance', |
| 49 | 'prt' => 'application/pro_eng', 'ps' => 'application/postscript', 'roff' => 'application/x-troff', |
| 50 | 'scm' => 'application/x-lotusscreencam', 'set' => 'application/set', 'sh' => 'application/x-sh', |
| 51 | 'shar' => 'application/x-shar', 'sit' => 'application/x-stuffit', 'skd' => 'application/x-koan', |
| 52 | 'skm' => 'application/x-koan', 'skp' => 'application/x-koan', 'skt' => 'application/x-koan', |
| 53 | 'smi' => 'application/smil', 'smil' => 'application/smil', 'sol' => 'application/solids', |
| 54 | 'spl' => 'application/x-futuresplash', 'src' => 'application/x-wais-source', 'step' => 'application/STEP', |
| 55 | 'stl' => 'application/SLA', 'stp' => 'application/STEP', 'sv4cpio' => 'application/x-sv4cpio', |
| 56 | 'sv4crc' => 'application/x-sv4crc', 'svg' => 'image/svg+xml', 'svgz' => 'image/svg+xml', |
| 57 | 'swf' => 'application/x-shockwave-flash', 't' => 'application/x-troff', |
| 58 | 'tar' => 'application/x-tar', 'tcl' => 'application/x-tcl', 'tex' => 'application/x-tex', |
| 59 | 'texi' => 'application/x-texinfo', 'texinfo' => 'application/x-texinfo', 'tr' => 'application/x-troff', |
| 60 | 'tsp' => 'application/dsptype', 'ttf' => 'font/ttf', |
| 61 | 'unv' => 'application/i-deas', 'ustar' => 'application/x-ustar', |
| 62 | 'vcd' => 'application/x-cdlink', 'vda' => 'application/vda', 'xlc' => 'application/vnd.ms-excel', |
| 63 | 'xll' => 'application/vnd.ms-excel', 'xlm' => 'application/vnd.ms-excel', 'xls' => 'application/vnd.ms-excel', |
| 64 | 'xlw' => 'application/vnd.ms-excel', 'zip' => 'application/zip', 'aif' => 'audio/x-aiff', 'aifc' => 'audio/x-aiff', |
| 65 | 'aiff' => 'audio/x-aiff', 'au' => 'audio/basic', 'kar' => 'audio/midi', 'mid' => 'audio/midi', |
| 66 | 'midi' => 'audio/midi', 'mp2' => 'audio/mpeg', 'mp3' => 'audio/mpeg', 'mpga' => 'audio/mpeg', |
| 67 | 'ra' => 'audio/x-realaudio', 'ram' => 'audio/x-pn-realaudio', 'rm' => 'audio/x-pn-realaudio', |
| 68 | 'rpm' => 'audio/x-pn-realaudio-plugin', 'snd' => 'audio/basic', 'tsi' => 'audio/TSP-audio', 'wav' => 'audio/x-wav', |
| 69 | 'asc' => 'text/plain', 'c' => 'text/plain', 'cc' => 'text/plain', 'css' => 'text/css', 'etx' => 'text/x-setext', |
| 70 | 'f' => 'text/plain', 'f90' => 'text/plain', 'h' => 'text/plain', 'hh' => 'text/plain', 'htm' => 'text/html', |
| 71 | 'html' => 'text/html', 'm' => 'text/plain', 'rtf' => 'text/rtf', 'rtx' => 'text/richtext', 'sgm' => 'text/sgml', |
| 72 | 'sgml' => 'text/sgml', 'tsv' => 'text/tab-separated-values', 'tpl' => 'text/template', 'txt' => 'text/plain', |
| 73 | 'xml' => 'text/xml', 'avi' => 'video/x-msvideo', 'fli' => 'video/x-fli', 'mov' => 'video/quicktime', |
| 74 | 'movie' => 'video/x-sgi-movie', 'mpe' => 'video/mpeg', 'mpeg' => 'video/mpeg', 'mpg' => 'video/mpeg', |
| 75 | 'qt' => 'video/quicktime', 'viv' => 'video/vnd.vivo', 'vivo' => 'video/vnd.vivo', 'gif' => 'image/gif', |
| 76 | 'ief' => 'image/ief', 'jpe' => 'image/jpeg', 'jpeg' => 'image/jpeg', 'jpg' => 'image/jpeg', |
| 77 | 'pbm' => 'image/x-portable-bitmap', 'pgm' => 'image/x-portable-graymap', 'png' => 'image/png', |
| 78 | 'pnm' => 'image/x-portable-anymap', 'ppm' => 'image/x-portable-pixmap', 'ras' => 'image/cmu-raster', |
| 79 | 'rgb' => 'image/x-rgb', 'tif' => 'image/tiff', 'tiff' => 'image/tiff', 'xbm' => 'image/x-xbitmap', |
| 80 | 'xpm' => 'image/x-xpixmap', 'xwd' => 'image/x-xwindowdump', 'ice' => 'x-conference/x-cooltalk', |
| 81 | 'iges' => 'model/iges', 'igs' => 'model/iges', 'mesh' => 'model/mesh', 'msh' => 'model/mesh', |
| 82 | 'silo' => 'model/mesh', 'vrml' => 'model/vrml', 'wrl' => 'model/vrml', |
| 83 | 'mime' => 'www/mime', 'pdb' => 'chemical/x-pdb', 'xyz' => 'chemical/x-pdb'); |
| 84 | |
| 85 | /** |
| 86 | * Holds headers sent to browser before rendering media |
| 87 | * |
| 88 | * @var array |
| 89 | * @access protected |
| 90 | */ |
| 91 | var $_headers = array(); |
| 92 | |
| 93 | /** |
| 94 | * Constructor |
| 95 | * |
| 96 | * @param object $controller |
| 97 | */ |
| 98 | function __construct(&$controller) { |
| 99 | parent::__construct($controller); |
| 100 | } |
| 101 | |
| 102 | /** |
| 103 | * Display or download the given file |
| 104 | * |
| 105 | * @return unknown |
| 106 | */ |
| 107 | function render() { |
| 108 | $name = $download = $extension = $id = $modified = $path = $size = $cache = $mimeType = null; |
| 109 | extract($this->viewVars, EXTR_OVERWRITE); |
| 110 | |
| 111 | if ($size) { |
| 112 | $id = $id . '_' . $size; |
| 113 | } |
| 114 | |
| 115 | if (is_dir($path)) { |
| 116 | $path = $path . $id; |
| 117 | } else { |
| 118 | $path = APP . $path . $id; |
| 119 | } |
| 120 | |
| 121 | if (!file_exists($path)) { |
| 122 | header('Content-Type: text/html'); |
| 123 | $this->cakeError('error404'); |
| 124 | } |
| 125 | |
| 126 | if (is_null($name)) { |
| 127 | $name = $id; |
| 128 | } |
| 129 | |
| 130 | if (is_array($mimeType)) { |
| 131 | $this->mimeType = array_merge($this->mimeType, $mimeType); |
| 132 | } |
| 133 | |
| 134 | if (isset($extension) && isset($this->mimeType[$extension]) && connection_status() == 0) { |
| 135 | $chunkSize = 8192; |
| 136 | $buffer = ''; |
| 137 | $fileSize = @filesize($path); |
| 138 | $handle = fopen($path, 'rb'); |
| 139 | |
| 140 | if ($handle === false) { |
| 141 | return false; |
| 142 | } |
| 143 | if (!empty($modified)) { |
| 144 | $modified = gmdate('D, d M Y H:i:s', strtotime($modified, time())) . ' GMT'; |
| 145 | } else { |
| 146 | $modified = gmdate('D, d M Y H:i:s') . ' GMT'; |
| 147 | } |
| 148 | |
| 149 | if ($download) { |
| 150 | $contentTypes = array('application/octet-stream'); |
| 151 | $agent = env('HTTP_USER_AGENT'); |
| 152 | |
| 153 | if (preg_match('%Opera(/| )([0-9].[0-9]{1,2})%', $agent)) { |
| 154 | $contentTypes[0] = 'application/octetstream'; |
| 155 | } else if (preg_match('/MSIE ([0-9].[0-9]{1,2})/', $agent)) { |
| 156 | $contentTypes[0] = 'application/force-download'; |
| 157 | array_merge($contentTypes, array( |
| 158 | 'application/octet-stream', |
| 159 | 'application/download' |
| 160 | )); |
| 161 | } |
| 162 | foreach($contentTypes as $contentType) { |
| 163 | $this->_header('Content-Type: ' . $contentType); |
| 164 | } |
| 165 | $this->_header(array( |
| 166 | 'Content-Disposition: attachment; filename="' . $name . '.' . $extension . '";', |
| 167 | 'Expires: 0', |
| 168 | 'Accept-Ranges: bytes', |
| 169 | 'Cache-Control: private' => false, |
| 170 | 'Pragma: private')); |
| 171 | |
| 172 | $httpRange = env('HTTP_RANGE'); |
| 173 | if (isset($httpRange)) { |
| 174 | list($toss, $range) = explode('=', $httpRange); |
| 175 | |
| 176 | $size = $fileSize - 1; |
| 177 | $length = $fileSize - $range; |
| 178 | |
| 179 | $this->_header(array( |
| 180 | 'HTTP/1.1 206 Partial Content', |
| 181 | 'Content-Length: ' . $length, |
| 182 | 'Content-Range: bytes ' . $range . $size . '/' . $fileSize)); |
| 183 | |
| 184 | fseek($handle, $range); |
| 185 | } else { |
| 186 | $this->_header('Content-Length: ' . $fileSize); |
| 187 | } |
| 188 | } else { |
| 189 | $this->_header('Date: ' . gmdate('D, d M Y H:i:s', time()) . ' GMT'); |
| 190 | if ($cache) { |
| 191 | if (!is_numeric($cache)) { |
| 192 | $cache = strtotime($cache) - time(); |
| 193 | } |
| 194 | $this->_header(array( |
| 195 | 'Cache-Control: max-age=' . $cache, |
| 196 | 'Expires: ' . gmdate('D, d M Y H:i:s', time() + $cache) . ' GMT', |
| 197 | 'Pragma: cache')); |
| 198 | } else { |
| 199 | $this->_header(array( |
| 200 | 'Cache-Control: must-revalidate, post-check=0, pre-check=0', |
| 201 | 'Pragma: no-cache')); |
| 202 | } |
| 203 | $this->_header(array( |
| 204 | 'Last-Modified: ' . $modified, |
| 205 | 'Content-Type: ' . $this->mimeType[$extension], |
| 206 | 'Content-Length: ' . $fileSize)); |
| 207 | } |
| 208 | $this->_output(); |
| 209 | $this->_clearBuffer(); |
| 210 | |
| 211 | while (!feof($handle)) { |
| 212 | if (!$this->_isActive()) { |
| 213 | fclose($handle); |
| 214 | return false; |
| 215 | } |
| 216 | set_time_limit(0); |
| 217 | $buffer = fread($handle, $chunkSize); |
| 218 | echo $buffer; |
| 219 | $this->_flushBuffer(); |
| 220 | } |
| 221 | fclose($handle); |
| 222 | return; |
| 223 | } |
| 224 | return false; |
| 225 | } |
| 226 | |
| 227 | /** |
| 228 | * Method to set headers |
| 229 | * @param mixed $header |
| 230 | * @param boolean $boolean |
| 231 | * @access protected |
| 232 | */ |
| 233 | function _header($header, $boolean = true) { |
| 234 | if (is_array($header)) { |
| 235 | foreach ($header as $string => $boolean) { |
| 236 | if (is_numeric($string)) { |
| 237 | $this->_headers[] = array($boolean => true); |
| 238 | } else { |
| 239 | $this->_headers[] = array($string => $boolean); |
| 240 | } |
| 241 | } |
| 242 | return; |
| 243 | } |
| 244 | $this->_headers[] = array($header => $boolean); |
| 245 | return; |
| 246 | } |
| 247 | |
| 248 | /** |
| 249 | * Method to output headers |
| 250 | * @access protected |
| 251 | */ |
| 252 | function _output() { |
| 253 | foreach ($this->_headers as $key => $value) { |
| 254 | $header = key($value); |
| 255 | header($header, $value[$header]); |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | /** |
| 260 | * Returns true if connection is still active |
| 261 | * @return boolean |
| 262 | * @access protected |
| 263 | */ |
| 264 | function _isActive() { |
| 265 | return connection_status() == 0 && !connection_aborted(); |
| 266 | } |
| 267 | |
| 268 | /** |
| 269 | * Clears the contents of the topmost output buffer and discards them |
| 270 | * @return boolean |
| 271 | * @access protected |
| 272 | */ |
| 273 | function _clearBuffer() { |
| 274 | return @ob_end_clean(); |
| 275 | } |
| 276 | |
| 277 | /** |
| 278 | * Flushes the contents of the output buffer |
| 279 | * @access protected |
| 280 | */ |
| 281 | function _flushBuffer() { |
| 282 | @flush(); |
| 283 | @ob_flush(); |
| 284 | } |
| 285 | } |
| 286 | |
| 287 |
