diff options
Diffstat (limited to 'inc/3rdparty/htmlpurifier/HTMLPurifier/AttrDef/HTML/LinkTypes.php')
-rw-r--r-- | inc/3rdparty/htmlpurifier/HTMLPurifier/AttrDef/HTML/LinkTypes.php | 72 |
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 | */ | ||
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 | ||