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author Shoshi TAMAKI <shoshi@cr.ie.u-ryukyu.ac.jp>
date Sun, 24 Jul 2011 21:08:31 +0900
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-1:000000000000 0:261e66bd5a0c
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 }