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authorNicolas LÅ“uillet <nicolas@loeuillet.org>2014-02-21 15:57:10 +0100
committerNicolas LÅ“uillet <nicolas@loeuillet.org>2014-02-21 15:57:10 +0100
commit99679d06884120c57f43b44e55e03595f1f87bed (patch)
treea3f2a1aa1afdaeca1386d0c6e8a75344fd2241fb /inc/3rdparty/htmlpurifier/HTMLPurifier/URISchemeRegistry.php
parent655214ab30ee84884dc408488b85586f36263fcb (diff)
parentd3b47e94705e17b3ba3529cbb1dc6efe69c5d2b7 (diff)
downloadwallabag-99679d06884120c57f43b44e55e03595f1f87bed.tar.gz
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Merge pull request #481 from wallabag/dev1.5.2
1.5.2
Diffstat (limited to 'inc/3rdparty/htmlpurifier/HTMLPurifier/URISchemeRegistry.php')
-rw-r--r--inc/3rdparty/htmlpurifier/HTMLPurifier/URISchemeRegistry.php81
1 files changed, 81 insertions, 0 deletions
diff --git a/inc/3rdparty/htmlpurifier/HTMLPurifier/URISchemeRegistry.php b/inc/3rdparty/htmlpurifier/HTMLPurifier/URISchemeRegistry.php
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1<?php
2
3/**
4 * Registry for retrieving specific URI scheme validator objects.
5 */
6class HTMLPurifier_URISchemeRegistry
7{
8
9 /**
10 * Retrieve sole instance of the registry.
11 * @param HTMLPurifier_URISchemeRegistry $prototype Optional prototype to overload sole instance with,
12 * or bool true to reset to default registry.
13 * @return HTMLPurifier_URISchemeRegistry
14 * @note Pass a registry object $prototype with a compatible interface and
15 * the function will copy it and return it all further times.
16 */
17 public static function instance($prototype = null)
18 {
19 static $instance = null;
20 if ($prototype !== null) {
21 $instance = $prototype;
22 } elseif ($instance === null || $prototype == true) {
23 $instance = new HTMLPurifier_URISchemeRegistry();
24 }
25 return $instance;
26 }
27
28 /**
29 * Cache of retrieved schemes.
30 * @type HTMLPurifier_URIScheme[]
31 */
32 protected $schemes = array();
33
34 /**
35 * Retrieves a scheme validator object
36 * @param string $scheme String scheme name like http or mailto
37 * @param HTMLPurifier_Config $config
38 * @param HTMLPurifier_Context $context
39 * @return HTMLPurifier_URIScheme
40 */
41 public function getScheme($scheme, $config, $context)
42 {
43 if (!$config) {
44 $config = HTMLPurifier_Config::createDefault();
45 }
46
47 // important, otherwise attacker could include arbitrary file
48 $allowed_schemes = $config->get('URI.AllowedSchemes');
49 if (!$config->get('URI.OverrideAllowedSchemes') &&
50 !isset($allowed_schemes[$scheme])
51 ) {
52 return;
53 }
54
55 if (isset($this->schemes[$scheme])) {
56 return $this->schemes[$scheme];
57 }
58 if (!isset($allowed_schemes[$scheme])) {
59 return;
60 }
61
62 $class = 'HTMLPurifier_URIScheme_' . $scheme;
63 if (!class_exists($class)) {
64 return;
65 }
66 $this->schemes[$scheme] = new $class();
67 return $this->schemes[$scheme];
68 }
69
70 /**
71 * Registers a custom scheme to the cache, bypassing reflection.
72 * @param string $scheme Scheme name
73 * @param HTMLPurifier_URIScheme $scheme_obj
74 */
75 public function register($scheme, $scheme_obj)
76 {
77 $this->schemes[$scheme] = $scheme_obj;
78 }
79}
80
81// vim: et sw=4 sts=4