ILIAS  release_5-2 Revision v5.2.25-18-g3f80b82851
HTMLPurifier_AttrDef_URI_IPv6 Class Reference

Validates an IPv6 address. More...

+ Inheritance diagram for HTMLPurifier_AttrDef_URI_IPv6:
+ Collaboration diagram for HTMLPurifier_AttrDef_URI_IPv6:

Public Member Functions

 validate ($aIP, $config, $context)
 
- Public Member Functions inherited from HTMLPurifier_AttrDef_URI_IPv4
 validate ($aIP, $config, $context)
 
- Public Member Functions inherited from HTMLPurifier_AttrDef
 validate ($string, $config, $context)
 Validates and cleans passed string according to a definition. More...
 
 parseCDATA ($string)
 Convenience method that parses a string as if it were CDATA. More...
 
 make ($string)
 Factory method for creating this class from a string. More...
 

Additional Inherited Members

- Data Fields inherited from HTMLPurifier_AttrDef
 $minimized = false
 Tells us whether or not an HTML attribute is minimized. More...
 
 $required = false
 Tells us whether or not an HTML attribute is required. More...
 
- Protected Member Functions inherited from HTMLPurifier_AttrDef_URI_IPv4
 _loadRegex ()
 Lazy load function to prevent regex from being stuffed in cache. More...
 
- Protected Member Functions inherited from HTMLPurifier_AttrDef
 mungeRgb ($string)
 Removes spaces from rgb(0, 0, 0) so that shorthand CSS properties work properly. More...
 
 expandCSSEscape ($string)
 Parses a possibly escaped CSS string and returns the "pure" version of it. More...
 
- Protected Attributes inherited from HTMLPurifier_AttrDef_URI_IPv4
 $ip4
 IPv4 regex, protected so that IPv6 can reuse it. More...
 

Detailed Description

Validates an IPv6 address.

Author
Feyd @ forums.devnetwork.net (public domain)
Note
This function requires brackets to have been removed from address in URI.

Definition at line 9 of file IPv6.php.

Member Function Documentation

◆ validate()

HTMLPurifier_AttrDef_URI_IPv6::validate (   $aIP,
  $config,
  $context 
)
Parameters
string$aIP
HTMLPurifier_Config$config
HTMLPurifier_Context$context
Returns
bool|string

Definition at line 18 of file IPv6.php.

References HTMLPurifier_AttrDef_URI_IPv4\_loadRegex().

19  {
20  if (!$this->ip4) {
21  $this->_loadRegex();
22  }
23 
24  $original = $aIP;
25 
26  $hex = '[0-9a-fA-F]';
27  $blk = '(?:' . $hex . '{1,4})';
28  $pre = '(?:/(?:12[0-8]|1[0-1][0-9]|[1-9][0-9]|[0-9]))'; // /0 - /128
29 
30  // prefix check
31  if (strpos($aIP, '/') !== false) {
32  if (preg_match('#' . $pre . '$#s', $aIP, $find)) {
33  $aIP = substr($aIP, 0, 0 - strlen($find[0]));
34  unset($find);
35  } else {
36  return false;
37  }
38  }
39 
40  // IPv4-compatiblity check
41  if (preg_match('#(?<=:' . ')' . $this->ip4 . '$#s', $aIP, $find)) {
42  $aIP = substr($aIP, 0, 0 - strlen($find[0]));
43  $ip = explode('.', $find[0]);
44  $ip = array_map('dechex', $ip);
45  $aIP .= $ip[0] . $ip[1] . ':' . $ip[2] . $ip[3];
46  unset($find, $ip);
47  }
48 
49  // compression check
50  $aIP = explode('::', $aIP);
51  $c = count($aIP);
52  if ($c > 2) {
53  return false;
54  } elseif ($c == 2) {
55  list($first, $second) = $aIP;
56  $first = explode(':', $first);
57  $second = explode(':', $second);
58 
59  if (count($first) + count($second) > 8) {
60  return false;
61  }
62 
63  while (count($first) < 8) {
64  array_push($first, '0');
65  }
66 
67  array_splice($first, 8 - count($second), 8, $second);
68  $aIP = $first;
69  unset($first, $second);
70  } else {
71  $aIP = explode(':', $aIP[0]);
72  }
73  $c = count($aIP);
74 
75  if ($c != 8) {
76  return false;
77  }
78 
79  // All the pieces should be 16-bit hex strings. Are they?
80  foreach ($aIP as $piece) {
81  if (!preg_match('#^[0-9a-fA-F]{4}$#s', sprintf('%04s', $piece))) {
82  return false;
83  }
84  }
85  return $original;
86  }
_loadRegex()
Lazy load function to prevent regex from being stuffed in cache.
Definition: IPv4.php:38
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The documentation for this class was generated from the following file: