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<?php defined('SYSPATH') or die('No direct access allowed.'); |
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/** |
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* Upload helper class for working with the global $_FILES |
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* array and Validation library. |
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* |
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* $Id: upload.php 3769 2008-12-15 00:48:56Z zombor $ |
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* |
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* @package Core |
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* @author Kohana Team |
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* @copyright (c) 2007-2008 Kohana Team |
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* @license http://kohanaphp.com/license.html |
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*/ |
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class upload_Core |
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{ |
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/** |
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* Save an uploaded file to a new location. |
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* |
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* @param mixed name of $_FILE input or array of upload data |
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* @param string new filename |
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* @param string new directory |
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* @param integer chmod mask |
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* @return string full path to new file |
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*/ |
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public static function save($file, $filename = null, $directory = null, $chmod = 0644) |
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{ |
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// Load file data from FILES if not passed as array |
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$file = is_array($file) ? $file : $_FILES[$file]; |
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if ($filename === null) { |
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// Use the default filename, with a timestamp pre-pended |
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$filename = time().$file['name']; |
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} |
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if (Kohana::config('upload.remove_spaces') === true) { |
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// Remove spaces from the filename |
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$filename = preg_replace('/\s+/', '_', $filename); |
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} |
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if ($directory === null) { |
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// Use the pre-configured upload directory |
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$directory = Kohana::config('upload.directory', true); |
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} |
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// Make sure the directory ends with a slash |
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$directory = rtrim($directory, '/').'/'; |
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if (! is_dir($directory) and Kohana::config('upload.create_directories') === true) { |
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// Create the upload directory |
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mkdir($directory, 0777, true); |
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} |
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if (! is_writable($directory)) { |
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throw new Kohana_Exception('upload.not_writable', $directory); |
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} |
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if (is_uploaded_file($file['tmp_name']) and move_uploaded_file($file['tmp_name'], $filename = $directory.$filename)) { |
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if ($chmod !== false) { |
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// Set permissions on filename |
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chmod($filename, $chmod); |
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} |
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// Return new file path |
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return $filename; |
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} |
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return false; |
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} |
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/* Validation Rules */ |
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/** |
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* Tests if input data is valid file type, even if no upload is present. |
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* |
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* @return bool |
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*/ |
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public static function valid($file) |
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{ |
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return (is_array($file) |
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and isset($file['error']) |
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and isset($file['name']) |
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and isset($file['type']) |
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and isset($file['tmp_name']) |
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and isset($file['size'])); |
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} |
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/** |
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* Tests if input data has valid upload data. |
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* |
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* @return bool |
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*/ |
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public static function required(array $file) |
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{ |
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return (isset($file['tmp_name']) |
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and isset($file['error']) |
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and is_uploaded_file($file['tmp_name']) |
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and (int) $file['error'] === UPLOAD_ERR_OK); |
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} |
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/** |
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* Validation rule to test if an uploaded file is allowed by extension. |
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* |
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* @param array allowed file extensions |
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* @return bool |
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*/ |
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public static function type(array $file, array $allowed_types) |
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{ |
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if ((int) $file['error'] !== UPLOAD_ERR_OK) { |
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return true; |
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} |
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// Get the default extension of the file |
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$extension = strtolower(substr(strrchr($file['name'], '.'), 1)); |
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// Get the mime types for the extension |
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$mime_types = Kohana::config('mimes.'.$extension); |
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// Make sure there is an extension, that the extension is allowed, and that mime types exist |
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return (! empty($extension) and in_array($extension, $allowed_types) and is_array($mime_types)); |
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} |
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/** |
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* Validation rule to test if an uploaded file is allowed by file size. |
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* File sizes are defined as: SB, where S is the size (1, 15, 300, etc) and |
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* B is the byte modifier: (B)ytes, (K)ilobytes, (M)egabytes, (G)igabytes. |
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* Eg: to limit the size to 1MB or less, you would use "1M". |
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* |
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* @param array maximum file size |
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* @return bool |
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*/ |
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public static function size(array $file, array $size) |
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{ |
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if ((int) $file['error'] !== UPLOAD_ERR_OK) { |
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return true; |
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} |
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// Only one size is allowed |
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$size = strtoupper($size[0]); |
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if (! preg_match('/[0-9]++[BKMG]/', $size)) { |
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return false; |
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} |
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// Make the size into a power of 1024 |
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switch (substr($size, -1)) { |
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case 'G': $size = intval($size) * pow(1024, 3); break; |
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case 'M': $size = intval($size) * pow(1024, 2); break; |
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case 'K': $size = intval($size) * pow(1024, 1); break; |
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default: $size = intval($size); break; |
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} |
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// Test that the file is under or equal to the max size |
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return ($file['size'] <= $size); |
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} |
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} // End upload |
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This check compares the return type specified in the
@returnannotation of a function or method doc comment with the types returned by the function and raises an issue if they mismatch.