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<?php |
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/** |
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* phpillow CouchDB backend |
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* |
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* This file is part of phpillow. |
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* |
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* phpillow is free software; you can redistribute it and/or modify it under |
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* the terms of the GNU Lesser General Public License as published by the Free |
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* Software Foundation; version 3 of the License. |
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* |
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* phpillow is distributed in the hope that it will be useful, but WITHOUT ANY |
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for |
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* more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with phpillow; if not, write to the Free Software Foundation, Inc., 51 |
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* Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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* |
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* @package Core |
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* @version $Revision: 4 $ |
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* @license http://www.gnu.org/licenses/lgpl-3.0.txt LGPL |
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*/ |
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/** |
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* Validate given file as a valid image file |
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* |
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* @package Core |
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* @version $Revision: 4 $ |
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* @license http://www.gnu.org/licenses/lgpl-3.0.txt LGPL |
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*/ |
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class phpillowImageFileLocationValidator extends phpillowValidator |
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{ |
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/** |
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* Array containing a list of supported image formats. |
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* |
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* @var array |
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*/ |
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protected $supportedImageFormats = array( |
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IMAGETYPE_GIF, |
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IMAGETYPE_JPEG, |
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IMAGETYPE_PNG, |
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); |
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/** |
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* Validate input as string |
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* |
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* @param mixed $input |
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* @return string |
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*/ |
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public function validate( $input ) |
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{ |
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// Check if we got readaccess to the provided file name at all. |
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if ( !is_file( $input ) || !is_readable( $input ) ) |
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{ |
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throw new phpillowRuntimeException( 'Given image file not found: ' . $input ); |
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} |
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// Use getimagesize to determine the filetype of the image, and compare |
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// with whitelist of supported image formats. |
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$imageData = getimagesize( $input ); |
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if ( ( $imageData === false ) || |
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( !in_array( $imageData[2], $this->supportedImageFormats ) ) ) |
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{ |
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throw new phpillowValidationException( 'Unsupported image format provided.', array() ); |
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} |
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// If all checks passed, we assume that this is a proper image file. |
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return $input; |
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} |
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} |
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