1: <?php
2:
3: 4: 5: 6: 7: 8:
9: class HTMLPurifier_AttrDef_URI_IPv6 extends HTMLPurifier_AttrDef_URI_IPv4
10: {
11:
12: public function validate($aIP, $config, $context) {
13:
14: if (!$this->ip4) $this->_loadRegex();
15:
16: $original = $aIP;
17:
18: $hex = '[0-9a-fA-F]';
19: $blk = '(?:' . $hex . '{1,4})';
20: $pre = '(?:/(?:12[0-8]|1[0-1][0-9]|[1-9][0-9]|[0-9]))';
21:
22:
23: if (strpos($aIP, '/') !== false)
24: {
25: if (preg_match('#' . $pre . '$#s', $aIP, $find))
26: {
27: $aIP = substr($aIP, 0, 0-strlen($find[0]));
28: unset($find);
29: }
30: else
31: {
32: return false;
33: }
34: }
35:
36:
37: if (preg_match('#(?<=:'.')' . $this->ip4 . '$#s', $aIP, $find))
38: {
39: $aIP = substr($aIP, 0, 0-strlen($find[0]));
40: $ip = explode('.', $find[0]);
41: $ip = array_map('dechex', $ip);
42: $aIP .= $ip[0] . $ip[1] . ':' . $ip[2] . $ip[3];
43: unset($find, $ip);
44: }
45:
46:
47: $aIP = explode('::', $aIP);
48: $c = count($aIP);
49: if ($c > 2)
50: {
51: return false;
52: }
53: elseif ($c == 2)
54: {
55: list($first, $second) = $aIP;
56: $first = explode(':', $first);
57: $second = explode(':', $second);
58:
59: if (count($first) + count($second) > 8)
60: {
61: return false;
62: }
63:
64: while(count($first) < 8)
65: {
66: array_push($first, '0');
67: }
68:
69: array_splice($first, 8 - count($second), 8, $second);
70: $aIP = $first;
71: unset($first,$second);
72: }
73: else
74: {
75: $aIP = explode(':', $aIP[0]);
76: }
77: $c = count($aIP);
78:
79: if ($c != 8)
80: {
81: return false;
82: }
83:
84:
85: foreach ($aIP as $piece)
86: {
87: if (!preg_match('#^[0-9a-fA-F]{4}$#s', sprintf('%04s', $piece)))
88: {
89: return false;
90: }
91: }
92:
93: return $original;
94:
95: }
96:
97: }
98:
99:
100: