File xoops_lib\modules\protector\library\HTMLPurifier\AttrDef\HTML\LinkTypes.php

1:	<?php
2:
3:	/**
4:	* Validates a rel/rev link attribute against a directive of allowed values
5:	* @note We cannot use Enum because link types allow multiple
6:	* values.
7:	* @note Assumes link types are ASCII text
8:	*/
9:	class HTMLPurifier_AttrDef_HTML_LinkTypes extends HTMLPurifier_AttrDef
10:	{
11:
12:	/**
13:	* Name config attribute to pull.
14:	* @type string
15:	*/
16:	protected $name;
17:
18:	/**
19:	* @param string $name
20:	*/
21:	public function __construct($name)
22:	{
23:	$configLookup = array(
24:	'rel' => 'AllowedRel',
25:	'rev' => 'AllowedRev'
26:	);
27:	if (!isset($configLookup[$name])) {
28:	trigger_error(
29:	'Unrecognized attribute name for link ' .
30:	'relationship.',
31:	E_USER_ERROR
32:	);
33:	return;
34:	}
35:	$this->name = $configLookup[$name];
36:	}
37:
38:	/**
39:	* @param string $string
40:	* @param HTMLPurifier_Config $config
41:	* @param HTMLPurifier_Context $context
42:	* @return bool\|string
43:	*/
44:	public function validate($string, $config, $context)
45:	{
46:	$allowed = $config->get('Attr.' . $this->name);
47:	if (empty($allowed)) {
48:	return false;
49:	}
50:
51:	$string = $this->parseCDATA($string);
52:	$parts = explode(' ', $string);
53:
54:	// lookup to prevent duplicates
55:	$ret_lookup = array();
56:	foreach ($parts as $part) {
57:	$part = strtolower(trim($part));
58:	if (!isset($allowed[$part])) {
59:	continue;
60:	}
61:	$ret_lookup[$part] = true;
62:	}
63:
64:	if (empty($ret_lookup)) {
65:	return false;
66:	}
67:	$string = implode(' ', array_keys($ret_lookup));
68:	return $string;
69:	}
70:	}
71:
72:	// vim: et sw=4 sts=4
73: