ILIAS  release_5-1 Revision 5.0.0-5477-g43f3e3fab5f
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)
 
 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

Reimplemented from HTMLPurifier_AttrDef_URI_IPv4.

Definition at line 18 of file IPv6.php.

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

References HTMLPurifier_AttrDef_URI_IPv4\_loadRegex().

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The documentation for this class was generated from the following file: