86 lines
2.3 KiB
PHP
86 lines
2.3 KiB
PHP
<?php
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/**
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* This file is part of the Froxlor project.
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* Copyright (c) 2003-2009 the SysCP Team (see authors).
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* Copyright (c) 2010 the Froxlor Team (see authors).
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*
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* For the full copyright and license information, please view the COPYING
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* file that was distributed with this source code. You can also view the
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* COPYING file online at http://files.froxlor.org/misc/COPYING.txt
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*
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* @copyright (c) the authors
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* @author Florian Lippert <flo@syscp.org> (2003-2009)
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* @author Froxlor team <team@froxlor.org> (2010-)
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* @license GPLv2 http://files.froxlor.org/misc/COPYING.txt
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* @package Functions
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* @version $Id$
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*/
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/**
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* Validates the given string by matching against the pattern, prints an error on failure and exits
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*
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* @param string $str the string to be tested (user input)
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* @param string the $fieldname to be used in error messages
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* @param string $pattern the regular expression to be used for testing
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* @param string language id for the error
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* @return string the clean string
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*
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* If the default pattern is used and the string does not match, we try to replace the
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* 'bad' values and log the action.
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*
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*/
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function validate($str, $fieldname, $pattern = '', $lng = '', $emptydefault = array())
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{
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global $log;
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if(!is_array($emptydefault))
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{
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$emptydefault_array = array(
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$emptydefault
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);
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unset($emptydefault);
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$emptydefault = $emptydefault_array;
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unset($emptydefault_array);
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}
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// Check if the $str is one of the values which represent the default for an 'empty' value
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if(is_array($emptydefault)
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&& !empty($emptydefault)
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&& in_array($str, $emptydefault)
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&& isset($emptydefault[0]))
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{
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return $emptydefault[0];
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}
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if($pattern == '')
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{
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$pattern = '/^[^\r\n\t\f\0]*$/D';
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if(!preg_match($pattern, $str))
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{
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// Allows letters a-z, digits, space (\\040), hyphen (\\-), underscore (\\_) and backslash (\\\\),
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// everything else is removed from the string.
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$allowed = "/[^a-z0-9\\040\\.\\-\\_\\\\]/i";
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preg_replace($allowed, "", $str);
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$log->logAction(null, LOG_WARNING, "cleaned bad formatted string (" . $str . ")");
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}
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}
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if(preg_match($pattern, $str))
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{
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return $str;
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}
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if($lng == '')
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{
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$lng = 'stringformaterror';
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}
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standard_error($lng, $fieldname);
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exit;
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}
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