99 lines
3.5 KiB
PHP
99 lines
3.5 KiB
PHP
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<?php
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/**
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* @package Joomla.Platform
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* @subpackage Form
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*
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* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
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* @license GNU General Public License version 2 or later; see LICENSE
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*/
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defined('JPATH_PLATFORM') or die;
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/**
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* Form Rule class for the Joomla Platform.
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*
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* @package Joomla.Platform
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* @subpackage Form
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* @since 11.1
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*/
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class JFormRuleUrl extends JFormRule
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{
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/**
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* Method to test an external url for a valid parts.
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*
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* @param SimpleXMLElement $element The SimpleXMLElement object representing the <field /> tag for the form field object.
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* @param mixed $value The form field value to validate.
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* @param string $group The field name group control value. This acts as as an array container for the field.
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* For example if the field has name="foo" and the group value is set to "bar" then the
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* full field name would end up being "bar[foo]".
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* @param JRegistry $input An optional JRegistry object with the entire data set to validate against the entire form.
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* @param JForm $form The form object for which the field is being tested.
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*
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* @return boolean True if the value is valid, false otherwise.
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*
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* @since 11.1
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* @link http://www.w3.org/Addressing/URL/url-spec.txt
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* @see Jstring
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*/
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public function test(SimpleXMLElement $element, $value, $group = null, JRegistry $input = null, JForm $form = null)
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{
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// If the field is empty and not required, the field is valid.
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$required = ((string) $element['required'] == 'true' || (string) $element['required'] == 'required');
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if (!$required && empty($value))
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{
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return true;
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}
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$urlParts = JString::parse_url($value);
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// See http://www.w3.org/Addressing/URL/url-spec.txt
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// Use the full list or optionally specify a list of permitted schemes.
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if ($element['schemes'] == '')
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{
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$scheme = array('http', 'https', 'ftp', 'ftps', 'gopher', 'mailto', 'news', 'prospero', 'telnet', 'rlogin', 'tn3270', 'wais', 'url',
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'mid', 'cid', 'nntp', 'tel', 'urn', 'ldap', 'file', 'fax', 'modem', 'git');
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}
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else
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{
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$scheme = explode(',', $element['schemes']);
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}
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/*
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* This rule is only for full URLs with schemes because parse_url does not parse
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* accurately without a scheme.
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* @see http://php.net/manual/en/function.parse-url.php
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*/
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if ($urlParts && !array_key_exists('scheme', $urlParts))
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{
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return false;
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}
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$urlScheme = (string) $urlParts['scheme'];
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$urlScheme = strtolower($urlScheme);
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if (in_array($urlScheme, $scheme) == false)
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{
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return false;
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}
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// For some schemes here must be two slashes.
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if (($urlScheme == 'http' || $urlScheme == 'https' || $urlScheme == 'ftp' || $urlScheme == 'sftp' || $urlScheme == 'gopher'
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|| $urlScheme == 'wais' || $urlScheme == 'gopher' || $urlScheme == 'prospero' || $urlScheme == 'telnet' || $urlScheme == 'git')
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&& ((substr($value, strlen($urlScheme), 3)) !== '://'))
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{
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return false;
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}
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// The best we can do for the rest is make sure that the strings are valid UTF-8
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// and the port is an integer.
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if (array_key_exists('host', $urlParts) && !JString::valid((string) $urlParts['host']))
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{
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return false;
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}
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if (array_key_exists('port', $urlParts) && !is_int((int) $urlParts['port']))
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{
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return false;
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}
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if (array_key_exists('path', $urlParts) && !JString::valid((string) $urlParts['path']))
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{
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return false;
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}
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return true;
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}
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}
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