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BooleanRule.php
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CalendarRule.php
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CaptchaRule.php
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ColorRule.php
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CssIdentifierRule.php
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EmailRule.php
(6.36 KB)
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EqualsRule.php
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ExistsRule.php
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FilePathRule.php
(2.61 KB)
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FolderPathExistsRule.php
(2.28 KB)
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ModuleLayoutRule.php
(1.04 KB)
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NotequalsRule.php
(2.17 KB)
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NumberRule.php
(2.11 KB)
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OptionsRule.php
(2.8 KB)
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PasswordRule.php
(6.38 KB)
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RulesRule.php
(3.55 KB)
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SubformRule.php
(2.49 KB)
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TelRule.php
(3.13 KB)
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TimeRule.php
(5.04 KB)
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UrlRule.php
(4.38 KB)
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UserIdRule.php
(2.28 KB)
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UsernameRule.php
(2.22 KB)
Editing: FilePathRule.php
<?php /** * Joomla! Content Management System * * @copyright Copyright (C) 2005 - 2020 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE.txt */ namespace Joomla\CMS\Form\Rule; defined('JPATH_PLATFORM') or die; use Joomla\CMS\Filesystem\Path; use Joomla\CMS\Form\Form; use Joomla\CMS\Form\FormRule; use Joomla\Registry\Registry; /** * Form Rule class for the Joomla Platform. * * @since 3.9.21 */ class FilePathRule extends FormRule { /** * Method to test if the file path is valid * * @param \SimpleXMLElement $element The SimpleXMLElement object representing the `<field>` tag for the form field object. * @param mixed $value The form field value to validate. * @param string $group The field name group control value. This acts as an array container for the field. * For example if the field has name="foo" and the group value is set to "bar" then the * full field name would end up being "bar[foo]". * @param Registry $input An optional Registry object with the entire data set to validate against the entire form. * @param Form $form The form object for which the field is being tested. * * @return boolean True if the value is valid, false otherwise. * * @since 3.9.21 */ public function test(\SimpleXMLElement $element, $value, $group = null, Registry $input = null, Form $form = null) { $value = trim($value); // If the field is empty and not required, the field is valid. $required = ((string) $element['required'] == 'true' || (string) $element['required'] == 'required'); if (!$required && empty($value)) { return true; } // Get the exclude setting from the xml $exclude = (array) explode('|', (string) $element['exclude']); // Exclude current folder '.' to be safe from full path disclosure $exclude[] = '.'; // Check the exclude setting $path = preg_split('/[\/\\\\]/', $value); if (in_array(strtolower($path[0]), $exclude) || empty($path[0])) { return false; } // Prepend the root path $value = JPATH_ROOT . '/' . $value; // Check if $value is a valid path, which includes not allowing to break out of the current path try { Path::check($value); } catch (\Exception $e) { // When there is an exception in the check path this is not valid return false; } // When there are no exception this rule should pass. // See: https://github.com/joomla/joomla-cms/issues/30500#issuecomment-683290162 return true; } }
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