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<?php |
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/** |
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* Object to access the $_FILES array |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with this program; if not, write to the Free Software Foundation, Inc., |
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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* http://www.gnu.org/copyleft/gpl.html |
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* |
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* @file |
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*/ |
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/** |
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* Object to access the $_FILES array |
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* |
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* @ingroup HTTP |
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*/ |
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class WebRequestUpload { |
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protected $request; |
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protected $doesExist; |
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protected $fileInfo; |
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/** |
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* Constructor. Should only be called by WebRequest |
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* |
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* @param WebRequest $request The associated request |
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* @param string $key Key in $_FILES array (name of form field) |
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*/ |
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public function __construct( $request, $key ) { |
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$this->request = $request; |
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$this->doesExist = isset( $_FILES[$key] ); |
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if ( $this->doesExist ) { |
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$this->fileInfo = $_FILES[$key]; |
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} |
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} |
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/** |
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* Return whether a file with this name was uploaded. |
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* |
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* @return bool |
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*/ |
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public function exists() { |
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return $this->doesExist; |
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} |
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/** |
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* Return the original filename of the uploaded file |
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* |
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* @return string|null Filename or null if non-existent |
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*/ |
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public function getName() { |
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if ( !$this->exists() ) { |
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return null; |
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} |
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global $wgContLang; |
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$name = $this->fileInfo['name']; |
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# Safari sends filenames in HTML-encoded Unicode form D... |
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# Horrid and evil! Let's try to make some kind of sense of it. |
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$name = Sanitizer::decodeCharReferences( $name ); |
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$name = $wgContLang->normalize( $name ); |
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wfDebug( __METHOD__ . ": {$this->fileInfo['name']} normalized to '$name'\n" ); |
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return $name; |
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} |
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/** |
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* Return the file size of the uploaded file |
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* |
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* @return int File size or zero if non-existent |
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*/ |
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public function getSize() { |
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if ( !$this->exists() ) { |
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return 0; |
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} |
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return $this->fileInfo['size']; |
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} |
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/** |
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* Return the path to the temporary file |
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* |
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* @return string|null Path or null if non-existent |
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*/ |
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public function getTempName() { |
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if ( !$this->exists() ) { |
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return null; |
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} |
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return $this->fileInfo['tmp_name']; |
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} |
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/** |
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* Return the upload error. See link for explanation |
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* https://secure.php.net/manual/en/features.file-upload.errors.php |
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* |
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* @return int One of the UPLOAD_ constants, 0 if non-existent |
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*/ |
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public function getError() { |
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if ( !$this->exists() ) { |
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return 0; # UPLOAD_ERR_OK |
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} |
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return $this->fileInfo['error']; |
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} |
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/** |
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* Returns whether this upload failed because of overflow of a maximum set |
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* in php.ini |
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* |
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* @return bool |
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*/ |
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public function isIniSizeOverflow() { |
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if ( $this->getError() == UPLOAD_ERR_INI_SIZE ) { |
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# PHP indicated that upload_max_filesize is exceeded |
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return true; |
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} |
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$contentLength = $this->request->getHeader( 'Content-Length' ); |
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$maxPostSize = wfShorthandToInteger( |
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ini_get( 'post_max_size' ) ?: ini_get( 'hhvm.server.max_post_size' ), |
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0 |
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); |
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if ( $maxPostSize && $contentLength > $maxPostSize ) { |
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# post_max_size is exceeded |
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return true; |
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} |
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return false; |
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} |
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} |
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Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: