mirror of
https://github.com/kamilwylegala/cakephp2-php8.git
synced 2024-11-15 03:18:26 +00:00
18f02bf5b3
After discussing it a bit, we've come to consensus that emitting errors or throwing exceptions are both pretty disruptive and annoying to deal with. Instead we'll revert to the previous 2.x behavior of doing nothing.
1517 lines
44 KiB
PHP
1517 lines
44 KiB
PHP
<?php
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/**
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* CakeResponse
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*
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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*
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* Licensed under The MIT License
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* For full copyright and license information, please see the LICENSE.txt
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @package Cake.Network
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* @since CakePHP(tm) v 2.0
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* @license http://www.opensource.org/licenses/mit-license.php MIT License
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*/
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App::uses('File', 'Utility');
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/**
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* CakeResponse is responsible for managing the response text, status and headers of a HTTP response.
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*
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* By default controllers will use this class to render their response. If you are going to use
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* a custom response class it should subclass this object in order to ensure compatibility.
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*
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* @package Cake.Network
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*/
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class CakeResponse {
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/**
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* Holds HTTP response statuses
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*
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* @var array
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*/
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protected $_statusCodes = array(
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100 => 'Continue',
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101 => 'Switching Protocols',
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200 => 'OK',
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201 => 'Created',
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202 => 'Accepted',
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203 => 'Non-Authoritative Information',
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204 => 'No Content',
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205 => 'Reset Content',
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206 => 'Partial Content',
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300 => 'Multiple Choices',
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301 => 'Moved Permanently',
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302 => 'Found',
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303 => 'See Other',
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304 => 'Not Modified',
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305 => 'Use Proxy',
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307 => 'Temporary Redirect',
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400 => 'Bad Request',
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401 => 'Unauthorized',
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402 => 'Payment Required',
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403 => 'Forbidden',
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404 => 'Not Found',
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405 => 'Method Not Allowed',
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406 => 'Not Acceptable',
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407 => 'Proxy Authentication Required',
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408 => 'Request Time-out',
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409 => 'Conflict',
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410 => 'Gone',
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411 => 'Length Required',
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412 => 'Precondition Failed',
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413 => 'Request Entity Too Large',
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414 => 'Request-URI Too Large',
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415 => 'Unsupported Media Type',
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416 => 'Requested range not satisfiable',
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417 => 'Expectation Failed',
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500 => 'Internal Server Error',
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501 => 'Not Implemented',
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502 => 'Bad Gateway',
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503 => 'Service Unavailable',
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504 => 'Gateway Time-out',
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505 => 'Unsupported Version'
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);
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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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*/
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protected $_mimeTypes = array(
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'html' => array('text/html', '*/*'),
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'json' => 'application/json',
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'xml' => array('application/xml', 'text/xml'),
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'rss' => 'application/rss+xml',
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'ai' => 'application/postscript',
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'bcpio' => 'application/x-bcpio',
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'bin' => 'application/octet-stream',
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'ccad' => 'application/clariscad',
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'cdf' => 'application/x-netcdf',
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'class' => 'application/octet-stream',
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'cpio' => 'application/x-cpio',
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'cpt' => 'application/mac-compactpro',
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'csh' => 'application/x-csh',
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'csv' => array('text/csv', 'application/vnd.ms-excel', 'text/plain'),
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'dcr' => 'application/x-director',
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'dir' => 'application/x-director',
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'dms' => 'application/octet-stream',
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'doc' => 'application/msword',
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'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
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'drw' => 'application/drafting',
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'dvi' => 'application/x-dvi',
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'dwg' => 'application/acad',
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'dxf' => 'application/dxf',
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'dxr' => 'application/x-director',
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'eot' => 'application/vnd.ms-fontobject',
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'eps' => 'application/postscript',
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'exe' => 'application/octet-stream',
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'ez' => 'application/andrew-inset',
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'flv' => 'video/x-flv',
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'gtar' => 'application/x-gtar',
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'gz' => 'application/x-gzip',
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'bz2' => 'application/x-bzip',
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'7z' => 'application/x-7z-compressed',
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'hdf' => 'application/x-hdf',
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'hqx' => 'application/mac-binhex40',
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'ico' => 'image/x-icon',
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'ips' => 'application/x-ipscript',
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'ipx' => 'application/x-ipix',
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'js' => 'application/javascript',
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'latex' => 'application/x-latex',
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'lha' => 'application/octet-stream',
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'lsp' => 'application/x-lisp',
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'lzh' => 'application/octet-stream',
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'man' => 'application/x-troff-man',
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'me' => 'application/x-troff-me',
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'mif' => 'application/vnd.mif',
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'ms' => 'application/x-troff-ms',
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'nc' => 'application/x-netcdf',
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'oda' => 'application/oda',
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'otf' => 'font/otf',
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'pdf' => 'application/pdf',
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'pgn' => 'application/x-chess-pgn',
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'pot' => 'application/vnd.ms-powerpoint',
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'pps' => 'application/vnd.ms-powerpoint',
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'ppt' => 'application/vnd.ms-powerpoint',
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'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
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'ppz' => 'application/vnd.ms-powerpoint',
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'pre' => 'application/x-freelance',
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'prt' => 'application/pro_eng',
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'ps' => 'application/postscript',
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'roff' => 'application/x-troff',
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'scm' => 'application/x-lotusscreencam',
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'set' => 'application/set',
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'sh' => 'application/x-sh',
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'shar' => 'application/x-shar',
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'sit' => 'application/x-stuffit',
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'skd' => 'application/x-koan',
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'skm' => 'application/x-koan',
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'skp' => 'application/x-koan',
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'skt' => 'application/x-koan',
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'smi' => 'application/smil',
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'smil' => 'application/smil',
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'sol' => 'application/solids',
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'spl' => 'application/x-futuresplash',
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'src' => 'application/x-wais-source',
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'step' => 'application/STEP',
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'stl' => 'application/SLA',
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'stp' => 'application/STEP',
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'sv4cpio' => 'application/x-sv4cpio',
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'sv4crc' => 'application/x-sv4crc',
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'svg' => 'image/svg+xml',
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'svgz' => 'image/svg+xml',
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'swf' => 'application/x-shockwave-flash',
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't' => 'application/x-troff',
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'tar' => 'application/x-tar',
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'tcl' => 'application/x-tcl',
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'tex' => 'application/x-tex',
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'texi' => 'application/x-texinfo',
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'texinfo' => 'application/x-texinfo',
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'tr' => 'application/x-troff',
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'tsp' => 'application/dsptype',
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'ttc' => 'font/ttf',
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'ttf' => 'font/ttf',
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'unv' => 'application/i-deas',
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'ustar' => 'application/x-ustar',
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'vcd' => 'application/x-cdlink',
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'vda' => 'application/vda',
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'xlc' => 'application/vnd.ms-excel',
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'xll' => 'application/vnd.ms-excel',
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'xlm' => 'application/vnd.ms-excel',
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'xls' => 'application/vnd.ms-excel',
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'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
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'xlw' => 'application/vnd.ms-excel',
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'zip' => 'application/zip',
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'aif' => 'audio/x-aiff',
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'aifc' => 'audio/x-aiff',
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'aiff' => 'audio/x-aiff',
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'au' => 'audio/basic',
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'kar' => 'audio/midi',
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'mid' => 'audio/midi',
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'midi' => 'audio/midi',
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'mp2' => 'audio/mpeg',
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'mp3' => 'audio/mpeg',
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'mpga' => 'audio/mpeg',
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'ogg' => 'audio/ogg',
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'oga' => 'audio/ogg',
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'spx' => 'audio/ogg',
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'ra' => 'audio/x-realaudio',
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'ram' => 'audio/x-pn-realaudio',
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'rm' => 'audio/x-pn-realaudio',
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'rpm' => 'audio/x-pn-realaudio-plugin',
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'snd' => 'audio/basic',
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'tsi' => 'audio/TSP-audio',
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'wav' => 'audio/x-wav',
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'aac' => 'audio/aac',
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'asc' => 'text/plain',
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'c' => 'text/plain',
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'cc' => 'text/plain',
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'css' => 'text/css',
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'etx' => 'text/x-setext',
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'f' => 'text/plain',
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'f90' => 'text/plain',
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'h' => 'text/plain',
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'hh' => 'text/plain',
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'htm' => array('text/html', '*/*'),
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'ics' => 'text/calendar',
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'm' => 'text/plain',
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'rtf' => 'text/rtf',
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'rtx' => 'text/richtext',
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'sgm' => 'text/sgml',
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'sgml' => 'text/sgml',
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'tsv' => 'text/tab-separated-values',
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'tpl' => 'text/template',
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'txt' => 'text/plain',
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'text' => 'text/plain',
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'avi' => 'video/x-msvideo',
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'fli' => 'video/x-fli',
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'mov' => 'video/quicktime',
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'movie' => 'video/x-sgi-movie',
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'mpe' => 'video/mpeg',
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'mpeg' => 'video/mpeg',
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'mpg' => 'video/mpeg',
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'qt' => 'video/quicktime',
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'viv' => 'video/vnd.vivo',
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'vivo' => 'video/vnd.vivo',
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'ogv' => 'video/ogg',
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'webm' => 'video/webm',
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'mp4' => 'video/mp4',
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'm4v' => 'video/mp4',
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'f4v' => 'video/mp4',
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'f4p' => 'video/mp4',
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'm4a' => 'audio/mp4',
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'f4a' => 'audio/mp4',
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'f4b' => 'audio/mp4',
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'gif' => 'image/gif',
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'ief' => 'image/ief',
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'jpg' => 'image/jpeg',
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'jpeg' => 'image/jpeg',
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'jpe' => 'image/jpeg',
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'pbm' => 'image/x-portable-bitmap',
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'pgm' => 'image/x-portable-graymap',
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'png' => 'image/png',
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'pnm' => 'image/x-portable-anymap',
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'ppm' => 'image/x-portable-pixmap',
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'ras' => 'image/cmu-raster',
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'rgb' => 'image/x-rgb',
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'tif' => 'image/tiff',
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'tiff' => 'image/tiff',
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'xbm' => 'image/x-xbitmap',
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'xpm' => 'image/x-xpixmap',
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'xwd' => 'image/x-xwindowdump',
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'ice' => 'x-conference/x-cooltalk',
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'iges' => 'model/iges',
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'igs' => 'model/iges',
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'mesh' => 'model/mesh',
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'msh' => 'model/mesh',
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'silo' => 'model/mesh',
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'vrml' => 'model/vrml',
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'wrl' => 'model/vrml',
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'mime' => 'www/mime',
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'pdb' => 'chemical/x-pdb',
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'xyz' => 'chemical/x-pdb',
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'javascript' => 'application/javascript',
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'form' => 'application/x-www-form-urlencoded',
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'file' => 'multipart/form-data',
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'xhtml' => array('application/xhtml+xml', 'application/xhtml', 'text/xhtml'),
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'xhtml-mobile' => 'application/vnd.wap.xhtml+xml',
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'atom' => 'application/atom+xml',
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'amf' => 'application/x-amf',
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'wap' => array('text/vnd.wap.wml', 'text/vnd.wap.wmlscript', 'image/vnd.wap.wbmp'),
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'wml' => 'text/vnd.wap.wml',
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'wmlscript' => 'text/vnd.wap.wmlscript',
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'wbmp' => 'image/vnd.wap.wbmp',
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'woff' => 'application/x-font-woff',
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'webp' => 'image/webp',
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'appcache' => 'text/cache-manifest',
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'manifest' => 'text/cache-manifest',
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'htc' => 'text/x-component',
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'rdf' => 'application/xml',
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'crx' => 'application/x-chrome-extension',
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'oex' => 'application/x-opera-extension',
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'xpi' => 'application/x-xpinstall',
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'safariextz' => 'application/octet-stream',
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'webapp' => 'application/x-web-app-manifest+json',
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'vcf' => 'text/x-vcard',
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'vtt' => 'text/vtt',
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'mkv' => 'video/x-matroska',
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'pkpass' => 'application/vnd.apple.pkpass'
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);
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/**
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* Protocol header to send to the client
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*
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* @var string
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*/
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protected $_protocol = 'HTTP/1.1';
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/**
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* Status code to send to the client
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*
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* @var int
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*/
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protected $_status = 200;
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/**
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* Content type to send. This can be an 'extension' that will be transformed using the $_mimetypes array
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* or a complete mime-type
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*
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* @var int
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*/
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protected $_contentType = 'text/html';
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/**
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* Buffer list of headers
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*
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* @var array
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*/
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protected $_headers = array();
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/**
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* Buffer string for response message
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*
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* @var string
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*/
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protected $_body = null;
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/**
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* File object for file to be read out as response
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*
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* @var File
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*/
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protected $_file = null;
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/**
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* File range. Used for requesting ranges of files.
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*
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* @var array
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*/
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protected $_fileRange = null;
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/**
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* The charset the response body is encoded with
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*
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* @var string
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*/
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protected $_charset = 'UTF-8';
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/**
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* Holds all the cache directives that will be converted
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* into headers when sending the request
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*
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* @var string
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*/
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protected $_cacheDirectives = array();
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/**
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* Holds cookies to be sent to the client
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*
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* @var array
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*/
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protected $_cookies = array();
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/**
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* Constructor
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*
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* @param array $options list of parameters to setup the response. Possible values are:
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* - body: the response text that should be sent to the client
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* - statusCodes: additional allowable response codes
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* - status: the HTTP status code to respond with
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* - type: a complete mime-type string or an extension mapped in this class
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* - charset: the charset for the response body
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*/
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public function __construct(array $options = array()) {
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if (isset($options['body'])) {
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$this->body($options['body']);
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}
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if (isset($options['statusCodes'])) {
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$this->httpCodes($options['statusCodes']);
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}
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if (isset($options['status'])) {
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$this->statusCode($options['status']);
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}
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if (isset($options['type'])) {
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$this->type($options['type']);
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}
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if (!isset($options['charset'])) {
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$options['charset'] = Configure::read('App.encoding');
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}
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$this->charset($options['charset']);
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}
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/**
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* Sends the complete response to the client including headers and message body.
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* Will echo out the content in the response body.
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*
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* @return void
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*/
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public function send() {
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if (isset($this->_headers['Location']) && $this->_status === 200) {
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$this->statusCode(302);
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}
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$codeMessage = $this->_statusCodes[$this->_status];
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$this->_setCookies();
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$this->_sendHeader("{$this->_protocol} {$this->_status} {$codeMessage}");
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$this->_setContent();
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$this->_setContentLength();
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$this->_setContentType();
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foreach ($this->_headers as $header => $values) {
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foreach ((array)$values as $value) {
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$this->_sendHeader($header, $value);
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}
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}
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if ($this->_file) {
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$this->_sendFile($this->_file, $this->_fileRange);
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$this->_file = $this->_fileRange = null;
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} else {
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$this->_sendContent($this->_body);
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}
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}
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/**
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* Sets the cookies that have been added via CakeResponse::cookie() before any
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* other output is sent to the client. Will set the cookies in the order they
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* have been set.
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*
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* @return void
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*/
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protected function _setCookies() {
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foreach ($this->_cookies as $name => $c) {
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setcookie(
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$name, $c['value'], $c['expire'], $c['path'],
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$c['domain'], $c['secure'], $c['httpOnly']
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);
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}
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}
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/**
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* Formats the Content-Type header based on the configured contentType and charset
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* the charset will only be set in the header if the response is of type text/*
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*
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* @return void
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*/
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protected function _setContentType() {
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if (in_array($this->_status, array(304, 204))) {
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return;
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}
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$whitelist = array(
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'application/javascript', 'application/json', 'application/xml', 'application/rss+xml'
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);
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$charset = false;
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if ($this->_charset &&
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(strpos($this->_contentType, 'text/') === 0 || in_array($this->_contentType, $whitelist))
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) {
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$charset = true;
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}
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if ($charset) {
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$this->header('Content-Type', "{$this->_contentType}; charset={$this->_charset}");
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} else {
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$this->header('Content-Type', "{$this->_contentType}");
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}
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}
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|
/**
|
|
* Sets the response body to an empty text if the status code is 204 or 304
|
|
*
|
|
* @return void
|
|
*/
|
|
protected function _setContent() {
|
|
if (in_array($this->_status, array(304, 204))) {
|
|
$this->body('');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Calculates the correct Content-Length and sets it as a header in the response
|
|
* Will not set the value if already set or if the output is compressed.
|
|
*
|
|
* @return void
|
|
*/
|
|
protected function _setContentLength() {
|
|
$shouldSetLength = !isset($this->_headers['Content-Length']) && !in_array($this->_status, range(301, 307));
|
|
if (isset($this->_headers['Content-Length']) && $this->_headers['Content-Length'] === false) {
|
|
unset($this->_headers['Content-Length']);
|
|
return;
|
|
}
|
|
if ($shouldSetLength && !$this->outputCompressed()) {
|
|
$offset = ob_get_level() ? ob_get_length() : 0;
|
|
if (ini_get('mbstring.func_overload') & 2 && function_exists('mb_strlen')) {
|
|
$this->length($offset + mb_strlen($this->_body, '8bit'));
|
|
} else {
|
|
$this->length($this->_headers['Content-Length'] = $offset + strlen($this->_body));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sends a header to the client.
|
|
*
|
|
* Will skip sending headers if headers have already been sent.
|
|
*
|
|
* @param string $name the header name
|
|
* @param string $value the header value
|
|
* @return void
|
|
*/
|
|
protected function _sendHeader($name, $value = null) {
|
|
if (headers_sent($filename, $linenum)) {
|
|
return;
|
|
}
|
|
if ($value === null) {
|
|
header($name);
|
|
} else {
|
|
header("{$name}: {$value}");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sends a content string to the client.
|
|
*
|
|
* @param string $content string to send as response body
|
|
* @return void
|
|
*/
|
|
protected function _sendContent($content) {
|
|
echo $content;
|
|
}
|
|
|
|
/**
|
|
* Buffers a header string to be sent
|
|
* Returns the complete list of buffered headers
|
|
*
|
|
* ### Single header
|
|
* e.g `header('Location', 'http://example.com');`
|
|
*
|
|
* ### Multiple headers
|
|
* e.g `header(array('Location' => 'http://example.com', 'X-Extra' => 'My header'));`
|
|
*
|
|
* ### String header
|
|
* e.g `header('WWW-Authenticate: Negotiate');`
|
|
*
|
|
* ### Array of string headers
|
|
* e.g `header(array('WWW-Authenticate: Negotiate', 'Content-type: application/pdf'));`
|
|
*
|
|
* Multiple calls for setting the same header name will have the same effect as setting the header once
|
|
* with the last value sent for it
|
|
* e.g `header('WWW-Authenticate: Negotiate'); header('WWW-Authenticate: Not-Negotiate');`
|
|
* will have the same effect as only doing `header('WWW-Authenticate: Not-Negotiate');`
|
|
*
|
|
* @param string|array $header An array of header strings or a single header string
|
|
* - an associative array of "header name" => "header value" is also accepted
|
|
* - an array of string headers is also accepted
|
|
* @param string|array $value The header value(s)
|
|
* @return array list of headers to be sent
|
|
*/
|
|
public function header($header = null, $value = null) {
|
|
if ($header === null) {
|
|
return $this->_headers;
|
|
}
|
|
$headers = is_array($header) ? $header : array($header => $value);
|
|
foreach ($headers as $header => $value) {
|
|
if (is_numeric($header)) {
|
|
list($header, $value) = array($value, null);
|
|
}
|
|
if ($value === null) {
|
|
list($header, $value) = explode(':', $header, 2);
|
|
}
|
|
$this->_headers[$header] = is_array($value) ? array_map('trim', $value) : trim($value);
|
|
}
|
|
return $this->_headers;
|
|
}
|
|
|
|
/**
|
|
* Accessor for the location header.
|
|
*
|
|
* Get/Set the Location header value.
|
|
*
|
|
* @param null|string $url Either null to get the current location, or a string to set one.
|
|
* @return string|null When setting the location null will be returned. When reading the location
|
|
* a string of the current location header value (if any) will be returned.
|
|
*/
|
|
public function location($url = null) {
|
|
if ($url === null) {
|
|
$headers = $this->header();
|
|
return isset($headers['Location']) ? $headers['Location'] : null;
|
|
}
|
|
$this->header('Location', $url);
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Buffers the response message to be sent
|
|
* if $content is null the current buffer is returned
|
|
*
|
|
* @param string $content the string message to be sent
|
|
* @return string current message buffer if $content param is passed as null
|
|
*/
|
|
public function body($content = null) {
|
|
if ($content === null) {
|
|
return $this->_body;
|
|
}
|
|
return $this->_body = $content;
|
|
}
|
|
|
|
/**
|
|
* Sets the HTTP status code to be sent
|
|
* if $code is null the current code is returned
|
|
*
|
|
* @param int $code the HTTP status code
|
|
* @return int current status code
|
|
* @throws CakeException When an unknown status code is reached.
|
|
*/
|
|
public function statusCode($code = null) {
|
|
if ($code === null) {
|
|
return $this->_status;
|
|
}
|
|
if (!isset($this->_statusCodes[$code])) {
|
|
throw new CakeException(__d('cake_dev', 'Unknown status code'));
|
|
}
|
|
return $this->_status = $code;
|
|
}
|
|
|
|
/**
|
|
* Queries & sets valid HTTP response codes & messages.
|
|
*
|
|
* @param int|array $code If $code is an integer, then the corresponding code/message is
|
|
* returned if it exists, null if it does not exist. If $code is an array, then the
|
|
* keys are used as codes and the values as messages to add to the default HTTP
|
|
* codes. The codes must be integers greater than 99 and less than 1000. Keep in
|
|
* mind that the HTTP specification outlines that status codes begin with a digit
|
|
* between 1 and 5, which defines the class of response the client is to expect.
|
|
* Example:
|
|
*
|
|
* httpCodes(404); // returns array(404 => 'Not Found')
|
|
*
|
|
* httpCodes(array(
|
|
* 381 => 'Unicorn Moved',
|
|
* 555 => 'Unexpected Minotaur'
|
|
* )); // sets these new values, and returns true
|
|
*
|
|
* httpCodes(array(
|
|
* 0 => 'Nothing Here',
|
|
* -1 => 'Reverse Infinity',
|
|
* 12345 => 'Universal Password',
|
|
* 'Hello' => 'World'
|
|
* )); // throws an exception due to invalid codes
|
|
*
|
|
* For more on HTTP status codes see: http://www.w3.org/Protocols/rfc2616/rfc2616-sec6.html#sec6.1
|
|
*
|
|
* @return mixed associative array of the HTTP codes as keys, and the message
|
|
* strings as values, or null of the given $code does not exist.
|
|
* @throws CakeException If an attempt is made to add an invalid status code
|
|
*/
|
|
public function httpCodes($code = null) {
|
|
if (empty($code)) {
|
|
return $this->_statusCodes;
|
|
}
|
|
if (is_array($code)) {
|
|
$codes = array_keys($code);
|
|
$min = min($codes);
|
|
if (!is_int($min) || $min < 100 || max($codes) > 999) {
|
|
throw new CakeException(__d('cake_dev', 'Invalid status code'));
|
|
}
|
|
$this->_statusCodes = $code + $this->_statusCodes;
|
|
return true;
|
|
}
|
|
if (!isset($this->_statusCodes[$code])) {
|
|
return null;
|
|
}
|
|
return array($code => $this->_statusCodes[$code]);
|
|
}
|
|
|
|
/**
|
|
* Sets the response content type. It can be either a file extension
|
|
* which will be mapped internally to a mime-type or a string representing a mime-type
|
|
* if $contentType is null the current content type is returned
|
|
* if $contentType is an associative array, content type definitions will be stored/replaced
|
|
*
|
|
* ### Setting the content type
|
|
*
|
|
* e.g `type('jpg');`
|
|
*
|
|
* ### Returning the current content type
|
|
*
|
|
* e.g `type();`
|
|
*
|
|
* ### Storing content type definitions
|
|
*
|
|
* e.g `type(array('keynote' => 'application/keynote', 'bat' => 'application/bat'));`
|
|
*
|
|
* ### Replacing a content type definition
|
|
*
|
|
* e.g `type(array('jpg' => 'text/plain'));`
|
|
*
|
|
* @param string $contentType Content type key.
|
|
* @return mixed current content type or false if supplied an invalid content type
|
|
*/
|
|
public function type($contentType = null) {
|
|
if ($contentType === null) {
|
|
return $this->_contentType;
|
|
}
|
|
if (is_array($contentType)) {
|
|
foreach ($contentType as $type => $definition) {
|
|
$this->_mimeTypes[$type] = $definition;
|
|
}
|
|
return $this->_contentType;
|
|
}
|
|
if (isset($this->_mimeTypes[$contentType])) {
|
|
$contentType = $this->_mimeTypes[$contentType];
|
|
$contentType = is_array($contentType) ? current($contentType) : $contentType;
|
|
}
|
|
if (strpos($contentType, '/') === false) {
|
|
return false;
|
|
}
|
|
return $this->_contentType = $contentType;
|
|
}
|
|
|
|
/**
|
|
* Returns the mime type definition for an alias
|
|
*
|
|
* e.g `getMimeType('pdf'); // returns 'application/pdf'`
|
|
*
|
|
* @param string $alias the content type alias to map
|
|
* @return mixed string mapped mime type or false if $alias is not mapped
|
|
*/
|
|
public function getMimeType($alias) {
|
|
if (isset($this->_mimeTypes[$alias])) {
|
|
return $this->_mimeTypes[$alias];
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Maps a content-type back to an alias
|
|
*
|
|
* e.g `mapType('application/pdf'); // returns 'pdf'`
|
|
*
|
|
* @param string|array $ctype Either a string content type to map, or an array of types.
|
|
* @return mixed Aliases for the types provided.
|
|
*/
|
|
public function mapType($ctype) {
|
|
if (is_array($ctype)) {
|
|
return array_map(array($this, 'mapType'), $ctype);
|
|
}
|
|
|
|
foreach ($this->_mimeTypes as $alias => $types) {
|
|
if (in_array($ctype, (array)$types)) {
|
|
return $alias;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Sets the response charset
|
|
* if $charset is null the current charset is returned
|
|
*
|
|
* @param string $charset Character set string.
|
|
* @return string current charset
|
|
*/
|
|
public function charset($charset = null) {
|
|
if ($charset === null) {
|
|
return $this->_charset;
|
|
}
|
|
return $this->_charset = $charset;
|
|
}
|
|
|
|
/**
|
|
* Sets the correct headers to instruct the client to not cache the response
|
|
*
|
|
* @return void
|
|
*/
|
|
public function disableCache() {
|
|
$this->header(array(
|
|
'Expires' => 'Mon, 26 Jul 1997 05:00:00 GMT',
|
|
'Last-Modified' => gmdate("D, d M Y H:i:s") . " GMT",
|
|
'Cache-Control' => 'no-store, no-cache, must-revalidate, post-check=0, pre-check=0'
|
|
));
|
|
}
|
|
|
|
/**
|
|
* Sets the correct headers to instruct the client to cache the response.
|
|
*
|
|
* @param string $since a valid time since the response text has not been modified
|
|
* @param string $time a valid time for cache expiry
|
|
* @return void
|
|
*/
|
|
public function cache($since, $time = '+1 day') {
|
|
if (!is_int($time)) {
|
|
$time = strtotime($time);
|
|
}
|
|
$this->header(array(
|
|
'Date' => gmdate("D, j M Y G:i:s ", time()) . 'GMT'
|
|
));
|
|
$this->modified($since);
|
|
$this->expires($time);
|
|
$this->sharable(true);
|
|
$this->maxAge($time - time());
|
|
}
|
|
|
|
/**
|
|
* Sets whether a response is eligible to be cached by intermediate proxies
|
|
* This method controls the `public` or `private` directive in the Cache-Control
|
|
* header
|
|
*
|
|
* @param bool $public If set to true, the Cache-Control header will be set as public
|
|
* if set to false, the response will be set to private
|
|
* if no value is provided, it will return whether the response is sharable or not
|
|
* @param int $time time in seconds after which the response should no longer be considered fresh
|
|
* @return bool
|
|
*/
|
|
public function sharable($public = null, $time = null) {
|
|
if ($public === null) {
|
|
$public = array_key_exists('public', $this->_cacheDirectives);
|
|
$private = array_key_exists('private', $this->_cacheDirectives);
|
|
$noCache = array_key_exists('no-cache', $this->_cacheDirectives);
|
|
if (!$public && !$private && !$noCache) {
|
|
return null;
|
|
}
|
|
$sharable = $public || ! ($private || $noCache);
|
|
return $sharable;
|
|
}
|
|
if ($public) {
|
|
$this->_cacheDirectives['public'] = true;
|
|
unset($this->_cacheDirectives['private']);
|
|
} else {
|
|
$this->_cacheDirectives['private'] = true;
|
|
unset($this->_cacheDirectives['public']);
|
|
}
|
|
|
|
$this->maxAge($time);
|
|
if (!$time) {
|
|
$this->_setCacheControl();
|
|
}
|
|
return (bool)$public;
|
|
}
|
|
|
|
/**
|
|
* Sets the Cache-Control s-maxage directive.
|
|
* The max-age is the number of seconds after which the response should no longer be considered
|
|
* a good candidate to be fetched from a shared cache (like in a proxy server).
|
|
* If called with no parameters, this function will return the current max-age value if any
|
|
*
|
|
* @param int $seconds if null, the method will return the current s-maxage value
|
|
* @return int
|
|
*/
|
|
public function sharedMaxAge($seconds = null) {
|
|
if ($seconds !== null) {
|
|
$this->_cacheDirectives['s-maxage'] = $seconds;
|
|
$this->_setCacheControl();
|
|
}
|
|
if (isset($this->_cacheDirectives['s-maxage'])) {
|
|
return $this->_cacheDirectives['s-maxage'];
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Sets the Cache-Control max-age directive.
|
|
* The max-age is the number of seconds after which the response should no longer be considered
|
|
* a good candidate to be fetched from the local (client) cache.
|
|
* If called with no parameters, this function will return the current max-age value if any
|
|
*
|
|
* @param int $seconds if null, the method will return the current max-age value
|
|
* @return int
|
|
*/
|
|
public function maxAge($seconds = null) {
|
|
if ($seconds !== null) {
|
|
$this->_cacheDirectives['max-age'] = $seconds;
|
|
$this->_setCacheControl();
|
|
}
|
|
if (isset($this->_cacheDirectives['max-age'])) {
|
|
return $this->_cacheDirectives['max-age'];
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Sets the Cache-Control must-revalidate directive.
|
|
* must-revalidate indicates that the response should not be served
|
|
* stale by a cache under any circumstance without first revalidating
|
|
* with the origin.
|
|
* If called with no parameters, this function will return whether must-revalidate is present.
|
|
*
|
|
* @param bool $enable If null returns whether directive is set, if boolean
|
|
* sets or unsets directive.
|
|
* @return bool
|
|
*/
|
|
public function mustRevalidate($enable = null) {
|
|
if ($enable !== null) {
|
|
if ($enable) {
|
|
$this->_cacheDirectives['must-revalidate'] = true;
|
|
} else {
|
|
unset($this->_cacheDirectives['must-revalidate']);
|
|
}
|
|
$this->_setCacheControl();
|
|
}
|
|
return array_key_exists('must-revalidate', $this->_cacheDirectives);
|
|
}
|
|
|
|
/**
|
|
* Helper method to generate a valid Cache-Control header from the options set
|
|
* in other methods
|
|
*
|
|
* @return void
|
|
*/
|
|
protected function _setCacheControl() {
|
|
$control = '';
|
|
foreach ($this->_cacheDirectives as $key => $val) {
|
|
$control .= $val === true ? $key : sprintf('%s=%s', $key, $val);
|
|
$control .= ', ';
|
|
}
|
|
$control = rtrim($control, ', ');
|
|
$this->header('Cache-Control', $control);
|
|
}
|
|
|
|
/**
|
|
* Sets the Expires header for the response by taking an expiration time
|
|
* If called with no parameters it will return the current Expires value
|
|
*
|
|
* ## Examples:
|
|
*
|
|
* `$response->expires('now')` Will Expire the response cache now
|
|
* `$response->expires(new DateTime('+1 day'))` Will set the expiration in next 24 hours
|
|
* `$response->expires()` Will return the current expiration header value
|
|
*
|
|
* @param string|DateTime $time Valid time string or DateTime object.
|
|
* @return string
|
|
*/
|
|
public function expires($time = null) {
|
|
if ($time !== null) {
|
|
$date = $this->_getUTCDate($time);
|
|
$this->_headers['Expires'] = $date->format('D, j M Y H:i:s') . ' GMT';
|
|
}
|
|
if (isset($this->_headers['Expires'])) {
|
|
return $this->_headers['Expires'];
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Sets the Last-Modified header for the response by taking a modification time
|
|
* If called with no parameters it will return the current Last-Modified value
|
|
*
|
|
* ## Examples:
|
|
*
|
|
* `$response->modified('now')` Will set the Last-Modified to the current time
|
|
* `$response->modified(new DateTime('+1 day'))` Will set the modification date in the past 24 hours
|
|
* `$response->modified()` Will return the current Last-Modified header value
|
|
*
|
|
* @param string|DateTime $time Valid time string or DateTime object.
|
|
* @return string
|
|
*/
|
|
public function modified($time = null) {
|
|
if ($time !== null) {
|
|
$date = $this->_getUTCDate($time);
|
|
$this->_headers['Last-Modified'] = $date->format('D, j M Y H:i:s') . ' GMT';
|
|
}
|
|
if (isset($this->_headers['Last-Modified'])) {
|
|
return $this->_headers['Last-Modified'];
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Sets the response as Not Modified by removing any body contents
|
|
* setting the status code to "304 Not Modified" and removing all
|
|
* conflicting headers
|
|
*
|
|
* @return void
|
|
*/
|
|
public function notModified() {
|
|
$this->statusCode(304);
|
|
$this->body('');
|
|
$remove = array(
|
|
'Allow',
|
|
'Content-Encoding',
|
|
'Content-Language',
|
|
'Content-Length',
|
|
'Content-MD5',
|
|
'Content-Type',
|
|
'Last-Modified'
|
|
);
|
|
foreach ($remove as $header) {
|
|
unset($this->_headers[$header]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the Vary header for the response, if an array is passed,
|
|
* values will be imploded into a comma separated string. If no
|
|
* parameters are passed, then an array with the current Vary header
|
|
* value is returned
|
|
*
|
|
* @param string|array $cacheVariances a single Vary string or an array
|
|
* containing the list for variances.
|
|
* @return array
|
|
*/
|
|
public function vary($cacheVariances = null) {
|
|
if ($cacheVariances !== null) {
|
|
$cacheVariances = (array)$cacheVariances;
|
|
$this->_headers['Vary'] = implode(', ', $cacheVariances);
|
|
}
|
|
if (isset($this->_headers['Vary'])) {
|
|
return explode(', ', $this->_headers['Vary']);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Sets the response Etag, Etags are a strong indicative that a response
|
|
* can be cached by a HTTP client. A bad way of generating Etags is
|
|
* creating a hash of the response output, instead generate a unique
|
|
* hash of the unique components that identifies a request, such as a
|
|
* modification time, a resource Id, and anything else you consider it
|
|
* makes it unique.
|
|
*
|
|
* Second parameter is used to instruct clients that the content has
|
|
* changed, but sematicallly, it can be used as the same thing. Think
|
|
* for instance of a page with a hit counter, two different page views
|
|
* are equivalent, but they differ by a few bytes. This leaves off to
|
|
* the Client the decision of using or not the cached page.
|
|
*
|
|
* If no parameters are passed, current Etag header is returned.
|
|
*
|
|
* @param string $tag Tag to set.
|
|
* @param bool $weak whether the response is semantically the same as
|
|
* other with the same hash or not
|
|
* @return string
|
|
*/
|
|
public function etag($tag = null, $weak = false) {
|
|
if ($tag !== null) {
|
|
$this->_headers['Etag'] = sprintf('%s"%s"', ($weak) ? 'W/' : null, $tag);
|
|
}
|
|
if (isset($this->_headers['Etag'])) {
|
|
return $this->_headers['Etag'];
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Returns a DateTime object initialized at the $time param and using UTC
|
|
* as timezone
|
|
*
|
|
* @param string|DateTime $time Valid time string or unix timestamp or DateTime object.
|
|
* @return DateTime
|
|
*/
|
|
protected function _getUTCDate($time = null) {
|
|
if ($time instanceof DateTime) {
|
|
$result = clone $time;
|
|
} elseif (is_int($time)) {
|
|
$result = new DateTime(date('Y-m-d H:i:s', $time));
|
|
} else {
|
|
$result = new DateTime($time);
|
|
}
|
|
$result->setTimeZone(new DateTimeZone('UTC'));
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Sets the correct output buffering handler to send a compressed response. Responses will
|
|
* be compressed with zlib, if the extension is available.
|
|
*
|
|
* @return bool false if client does not accept compressed responses or no handler is available, true otherwise
|
|
*/
|
|
public function compress() {
|
|
$compressionEnabled = ini_get("zlib.output_compression") !== '1' &&
|
|
extension_loaded("zlib") &&
|
|
(strpos(env('HTTP_ACCEPT_ENCODING'), 'gzip') !== false);
|
|
return $compressionEnabled && ob_start('ob_gzhandler');
|
|
}
|
|
|
|
/**
|
|
* Returns whether the resulting output will be compressed by PHP
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function outputCompressed() {
|
|
return strpos(env('HTTP_ACCEPT_ENCODING'), 'gzip') !== false
|
|
&& (ini_get("zlib.output_compression") === '1' || in_array('ob_gzhandler', ob_list_handlers()));
|
|
}
|
|
|
|
/**
|
|
* Sets the correct headers to instruct the browser to download the response as a file.
|
|
*
|
|
* @param string $filename the name of the file as the browser will download the response
|
|
* @return void
|
|
*/
|
|
public function download($filename) {
|
|
$this->header('Content-Disposition', 'attachment; filename="' . $filename . '"');
|
|
}
|
|
|
|
/**
|
|
* Sets the protocol to be used when sending the response. Defaults to HTTP/1.1
|
|
* If called with no arguments, it will return the current configured protocol
|
|
*
|
|
* @param string $protocol Protocol to be used for sending response.
|
|
* @return string protocol currently set
|
|
*/
|
|
public function protocol($protocol = null) {
|
|
if ($protocol !== null) {
|
|
$this->_protocol = $protocol;
|
|
}
|
|
return $this->_protocol;
|
|
}
|
|
|
|
/**
|
|
* Sets the Content-Length header for the response
|
|
* If called with no arguments returns the last Content-Length set
|
|
*
|
|
* @param int $bytes Number of bytes
|
|
* @return int|null
|
|
*/
|
|
public function length($bytes = null) {
|
|
if ($bytes !== null) {
|
|
$this->_headers['Content-Length'] = $bytes;
|
|
}
|
|
if (isset($this->_headers['Content-Length'])) {
|
|
return $this->_headers['Content-Length'];
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Checks whether a response has not been modified according to the 'If-None-Match'
|
|
* (Etags) and 'If-Modified-Since' (last modification date) request
|
|
* headers headers. If the response is detected to be not modified, it
|
|
* is marked as so accordingly so the client can be informed of that.
|
|
*
|
|
* In order to mark a response as not modified, you need to set at least
|
|
* the Last-Modified etag response header before calling this method. Otherwise
|
|
* a comparison will not be possible.
|
|
*
|
|
* @param CakeRequest $request Request object
|
|
* @return bool whether the response was marked as not modified or not.
|
|
*/
|
|
public function checkNotModified(CakeRequest $request) {
|
|
$etags = preg_split('/\s*,\s*/', $request->header('If-None-Match'), null, PREG_SPLIT_NO_EMPTY);
|
|
$modifiedSince = $request->header('If-Modified-Since');
|
|
if ($responseTag = $this->etag()) {
|
|
$etagMatches = in_array('*', $etags) || in_array($responseTag, $etags);
|
|
}
|
|
if ($modifiedSince) {
|
|
$timeMatches = strtotime($this->modified()) === strtotime($modifiedSince);
|
|
}
|
|
$checks = compact('etagMatches', 'timeMatches');
|
|
if (empty($checks)) {
|
|
return false;
|
|
}
|
|
$notModified = !in_array(false, $checks, true);
|
|
if ($notModified) {
|
|
$this->notModified();
|
|
}
|
|
return $notModified;
|
|
}
|
|
|
|
/**
|
|
* String conversion. Fetches the response body as a string.
|
|
* Does *not* send headers.
|
|
*
|
|
* @return string
|
|
*/
|
|
public function __toString() {
|
|
return (string)$this->_body;
|
|
}
|
|
|
|
/**
|
|
* Getter/Setter for cookie configs
|
|
*
|
|
* This method acts as a setter/getter depending on the type of the argument.
|
|
* If the method is called with no arguments, it returns all configurations.
|
|
*
|
|
* If the method is called with a string as argument, it returns either the
|
|
* given configuration if it is set, or null, if it's not set.
|
|
*
|
|
* If the method is called with an array as argument, it will set the cookie
|
|
* configuration to the cookie container.
|
|
*
|
|
* @param array $options Either null to get all cookies, string for a specific cookie
|
|
* or array to set cookie.
|
|
*
|
|
* ### Options (when setting a configuration)
|
|
* - name: The Cookie name
|
|
* - value: Value of the cookie
|
|
* - expire: Time the cookie expires in
|
|
* - path: Path the cookie applies to
|
|
* - domain: Domain the cookie is for.
|
|
* - secure: Is the cookie https?
|
|
* - httpOnly: Is the cookie available in the client?
|
|
*
|
|
* ## Examples
|
|
*
|
|
* ### Getting all cookies
|
|
*
|
|
* `$this->cookie()`
|
|
*
|
|
* ### Getting a certain cookie configuration
|
|
*
|
|
* `$this->cookie('MyCookie')`
|
|
*
|
|
* ### Setting a cookie configuration
|
|
*
|
|
* `$this->cookie((array) $options)`
|
|
*
|
|
* @return mixed
|
|
*/
|
|
public function cookie($options = null) {
|
|
if ($options === null) {
|
|
return $this->_cookies;
|
|
}
|
|
|
|
if (is_string($options)) {
|
|
if (!isset($this->_cookies[$options])) {
|
|
return null;
|
|
}
|
|
return $this->_cookies[$options];
|
|
}
|
|
|
|
$defaults = array(
|
|
'name' => 'CakeCookie[default]',
|
|
'value' => '',
|
|
'expire' => 0,
|
|
'path' => '/',
|
|
'domain' => '',
|
|
'secure' => false,
|
|
'httpOnly' => false
|
|
);
|
|
$options += $defaults;
|
|
|
|
$this->_cookies[$options['name']] = $options;
|
|
}
|
|
|
|
/**
|
|
* Setup access for origin and methods on cross origin requests
|
|
*
|
|
* This method allow multiple ways to setup the domains, see the examples
|
|
*
|
|
* ### Full URI
|
|
* e.g `cors($request, 'http://www.cakephp.org');`
|
|
*
|
|
* ### URI with wildcard
|
|
* e.g `cors($request, 'http://*.cakephp.org');`
|
|
*
|
|
* ### Ignoring the requested protocol
|
|
* e.g `cors($request, 'www.cakephp.org');`
|
|
*
|
|
* ### Any URI
|
|
* e.g `cors($request, '*');`
|
|
*
|
|
* ### Whitelist of URIs
|
|
* e.g `cors($request, array('http://www.cakephp.org', '*.google.com', 'https://myproject.github.io'));`
|
|
*
|
|
* @param CakeRequest $request Request object
|
|
* @param string|array $allowedDomains List of allowed domains, see method description for more details
|
|
* @param string|array $allowedMethods List of HTTP verbs allowed
|
|
* @param string|array $allowedHeaders List of HTTP headers allowed
|
|
* @return void
|
|
*/
|
|
public function cors(CakeRequest $request, $allowedDomains, $allowedMethods = array(), $allowedHeaders = array()) {
|
|
$origin = $request->header('Origin');
|
|
if (!$origin) {
|
|
return;
|
|
}
|
|
|
|
$allowedDomains = $this->_normalizeCorsDomains((array)$allowedDomains, $request->is('ssl'));
|
|
foreach ($allowedDomains as $domain) {
|
|
if (!preg_match($domain['preg'], $origin)) {
|
|
continue;
|
|
}
|
|
$this->header('Access-Control-Allow-Origin', $domain['original'] === '*' ? '*' : $origin);
|
|
$allowedMethods && $this->header('Access-Control-Allow-Methods', implode(', ', (array)$allowedMethods));
|
|
$allowedHeaders && $this->header('Access-Control-Allow-Headers', implode(', ', (array)$allowedHeaders));
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Normalize the origin to regular expressions and put in an array format
|
|
*
|
|
* @param array $domains Domains to normalize
|
|
* @param bool $requestIsSSL Whether it's a SSL request.
|
|
* @return array
|
|
*/
|
|
protected function _normalizeCorsDomains($domains, $requestIsSSL = false) {
|
|
$result = array();
|
|
foreach ($domains as $domain) {
|
|
if ($domain === '*') {
|
|
$result[] = array('preg' => '@.@', 'original' => '*');
|
|
continue;
|
|
}
|
|
|
|
$original = $preg = $domain;
|
|
if (strpos($domain, '://') === false) {
|
|
$preg = ($requestIsSSL ? 'https://' : 'http://') . $domain;
|
|
}
|
|
$preg = '@' . str_replace('*', '.*', $domain) . '@';
|
|
$result[] = compact('original', 'preg');
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Setup for display or download the given file.
|
|
*
|
|
* If $_SERVER['HTTP_RANGE'] is set a slice of the file will be
|
|
* returned instead of the entire file.
|
|
*
|
|
* ### Options keys
|
|
*
|
|
* - name: Alternate download name
|
|
* - download: If `true` sets download header and forces file to be downloaded rather than displayed in browser
|
|
*
|
|
* @param string $path Path to file. If the path is not an absolute path that resolves
|
|
* to a file, `APP` will be prepended to the path.
|
|
* @param array $options Options See above.
|
|
* @return void
|
|
* @throws NotFoundException
|
|
*/
|
|
public function file($path, $options = array()) {
|
|
$options += array(
|
|
'name' => null,
|
|
'download' => null
|
|
);
|
|
|
|
if (strpos($path, '..') !== false) {
|
|
throw new NotFoundException(__d(
|
|
'cake_dev',
|
|
'The requested file contains `..` and will not be read.'
|
|
));
|
|
}
|
|
|
|
if (!is_file($path)) {
|
|
$path = APP . $path;
|
|
}
|
|
|
|
$file = new File($path);
|
|
if (!$file->exists() || !$file->readable()) {
|
|
if (Configure::read('debug')) {
|
|
throw new NotFoundException(__d('cake_dev', 'The requested file %s was not found or not readable', $path));
|
|
}
|
|
throw new NotFoundException(__d('cake', 'The requested file was not found'));
|
|
}
|
|
|
|
$extension = strtolower($file->ext());
|
|
$download = $options['download'];
|
|
if ((!$extension || $this->type($extension) === false) && $download === null) {
|
|
$download = true;
|
|
}
|
|
|
|
$fileSize = $file->size();
|
|
if ($download) {
|
|
$agent = env('HTTP_USER_AGENT');
|
|
|
|
if (preg_match('%Opera(/| )([0-9].[0-9]{1,2})%', $agent)) {
|
|
$contentType = 'application/octet-stream';
|
|
} elseif (preg_match('/MSIE ([0-9].[0-9]{1,2})/', $agent)) {
|
|
$contentType = 'application/force-download';
|
|
}
|
|
|
|
if (!empty($contentType)) {
|
|
$this->type($contentType);
|
|
}
|
|
if ($options['name'] === null) {
|
|
$name = $file->name;
|
|
} else {
|
|
$name = $options['name'];
|
|
}
|
|
$this->download($name);
|
|
$this->header('Content-Transfer-Encoding', 'binary');
|
|
}
|
|
|
|
$this->header('Accept-Ranges', 'bytes');
|
|
$httpRange = env('HTTP_RANGE');
|
|
if (isset($httpRange)) {
|
|
$this->_fileRange($file, $httpRange);
|
|
} else {
|
|
$this->header('Content-Length', $fileSize);
|
|
}
|
|
|
|
$this->_clearBuffer();
|
|
$this->_file = $file;
|
|
}
|
|
|
|
/**
|
|
* Apply a file range to a file and set the end offset.
|
|
*
|
|
* If an invalid range is requested a 416 Status code will be used
|
|
* in the response.
|
|
*
|
|
* @param File $file The file to set a range on.
|
|
* @param string $httpRange The range to use.
|
|
* @return void
|
|
*/
|
|
protected function _fileRange($file, $httpRange) {
|
|
list(, $range) = explode('=', $httpRange);
|
|
list($start, $end) = explode('-', $range);
|
|
|
|
$fileSize = $file->size();
|
|
$lastByte = $fileSize - 1;
|
|
|
|
if ($start === '') {
|
|
$start = $fileSize - $end;
|
|
$end = $lastByte;
|
|
}
|
|
if ($end === '') {
|
|
$end = $lastByte;
|
|
}
|
|
|
|
if ($start > $end || $end > $lastByte || $start > $lastByte) {
|
|
$this->statusCode(416);
|
|
$this->header(array(
|
|
'Content-Range' => 'bytes 0-' . $lastByte . '/' . $fileSize
|
|
));
|
|
return;
|
|
}
|
|
|
|
$this->header(array(
|
|
'Content-Length' => $end - $start + 1,
|
|
'Content-Range' => 'bytes ' . $start . '-' . $end . '/' . $fileSize
|
|
));
|
|
|
|
$this->statusCode(206);
|
|
$this->_fileRange = array($start, $end);
|
|
}
|
|
|
|
/**
|
|
* Reads out a file, and echos the content to the client.
|
|
*
|
|
* @param File $file File object
|
|
* @param array $range The range to read out of the file.
|
|
* @return bool True is whole file is echoed successfully or false if client connection is lost in between
|
|
*/
|
|
protected function _sendFile($file, $range) {
|
|
$compress = $this->outputCompressed();
|
|
$file->open('rb');
|
|
|
|
$end = $start = false;
|
|
if ($range) {
|
|
list($start, $end) = $range;
|
|
}
|
|
if ($start !== false) {
|
|
$file->offset($start);
|
|
}
|
|
|
|
$bufferSize = 8192;
|
|
set_time_limit(0);
|
|
session_write_close();
|
|
while (!feof($file->handle)) {
|
|
if (!$this->_isActive()) {
|
|
$file->close();
|
|
return false;
|
|
}
|
|
$offset = $file->offset();
|
|
if ($end && $offset >= $end) {
|
|
break;
|
|
}
|
|
if ($end && $offset + $bufferSize >= $end) {
|
|
$bufferSize = $end - $offset + 1;
|
|
}
|
|
echo fread($file->handle, $bufferSize);
|
|
if (!$compress) {
|
|
$this->_flushBuffer();
|
|
}
|
|
}
|
|
$file->close();
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Returns true if connection is still active
|
|
*
|
|
* @return bool
|
|
*/
|
|
protected function _isActive() {
|
|
return connection_status() === CONNECTION_NORMAL && !connection_aborted();
|
|
}
|
|
|
|
/**
|
|
* Clears the contents of the topmost output buffer and discards them
|
|
*
|
|
* @return bool
|
|
*/
|
|
protected function _clearBuffer() {
|
|
//@codingStandardsIgnoreStart
|
|
return @ob_end_clean();
|
|
//@codingStandardsIgnoreEnd
|
|
}
|
|
|
|
/**
|
|
* Flushes the contents of the output buffer
|
|
*
|
|
* @return void
|
|
*/
|
|
protected function _flushBuffer() {
|
|
//@codingStandardsIgnoreStart
|
|
@flush();
|
|
if (ob_get_level()) {
|
|
@ob_flush();
|
|
}
|
|
//@codingStandardsIgnoreEnd
|
|
}
|
|
|
|
}
|