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Diffstat (limited to 'inc/3rdparty/htmlpurifier/HTMLPurifier/AttrDef/HTML/LinkTypes.php')
-rw-r--r--inc/3rdparty/htmlpurifier/HTMLPurifier/AttrDef/HTML/LinkTypes.php72
1 files changed, 72 insertions, 0 deletions
diff --git a/inc/3rdparty/htmlpurifier/HTMLPurifier/AttrDef/HTML/LinkTypes.php b/inc/3rdparty/htmlpurifier/HTMLPurifier/AttrDef/HTML/LinkTypes.php
new file mode 100644
index 00000000..3f56934f
--- /dev/null
+++ b/inc/3rdparty/htmlpurifier/HTMLPurifier/AttrDef/HTML/LinkTypes.php
@@ -0,0 +1,72 @@
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 */
9class 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