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010efc9b AD |
1 | <?php |
2 | ||
3 | class HTMLPurifier_URIDefinition extends HTMLPurifier_Definition | |
4 | { | |
5 | ||
6 | public $type = 'URI'; | |
7 | protected $filters = array(); | |
8 | protected $postFilters = array(); | |
9 | protected $registeredFilters = array(); | |
10 | ||
11 | /** | |
12 | * HTMLPurifier_URI object of the base specified at %URI.Base | |
13 | */ | |
14 | public $base; | |
15 | ||
16 | /** | |
17 | * String host to consider "home" base, derived off of $base | |
18 | */ | |
19 | public $host; | |
20 | ||
21 | /** | |
22 | * Name of default scheme based on %URI.DefaultScheme and %URI.Base | |
23 | */ | |
24 | public $defaultScheme; | |
25 | ||
26 | public function __construct() { | |
27 | $this->registerFilter(new HTMLPurifier_URIFilter_DisableExternal()); | |
28 | $this->registerFilter(new HTMLPurifier_URIFilter_DisableExternalResources()); | |
29 | $this->registerFilter(new HTMLPurifier_URIFilter_HostBlacklist()); | |
010efc9b AD |
30 | $this->registerFilter(new HTMLPurifier_URIFilter_MakeAbsolute()); |
31 | $this->registerFilter(new HTMLPurifier_URIFilter_Munge()); | |
32 | } | |
33 | ||
34 | public function registerFilter($filter) { | |
35 | $this->registeredFilters[$filter->name] = $filter; | |
36 | } | |
37 | ||
38 | public function addFilter($filter, $config) { | |
39 | $r = $filter->prepare($config); | |
40 | if ($r === false) return; // null is ok, for backwards compat | |
41 | if ($filter->post) { | |
42 | $this->postFilters[$filter->name] = $filter; | |
43 | } else { | |
44 | $this->filters[$filter->name] = $filter; | |
45 | } | |
46 | } | |
47 | ||
48 | protected function doSetup($config) { | |
49 | $this->setupMemberVariables($config); | |
50 | $this->setupFilters($config); | |
51 | } | |
52 | ||
53 | protected function setupFilters($config) { | |
54 | foreach ($this->registeredFilters as $name => $filter) { | |
cb73535c AD |
55 | $conf = $config->get('URI.' . $name); |
56 | if ($conf !== false && $conf !== null) { | |
010efc9b | 57 | $this->addFilter($filter, $config); |
010efc9b AD |
58 | } |
59 | } | |
60 | unset($this->registeredFilters); | |
61 | } | |
62 | ||
63 | protected function setupMemberVariables($config) { | |
64 | $this->host = $config->get('URI.Host'); | |
65 | $base_uri = $config->get('URI.Base'); | |
66 | if (!is_null($base_uri)) { | |
67 | $parser = new HTMLPurifier_URIParser(); | |
68 | $this->base = $parser->parse($base_uri); | |
69 | $this->defaultScheme = $this->base->scheme; | |
70 | if (is_null($this->host)) $this->host = $this->base->host; | |
71 | } | |
72 | if (is_null($this->defaultScheme)) $this->defaultScheme = $config->get('URI.DefaultScheme'); | |
73 | } | |
74 | ||
010efc9b AD |
75 | public function filter(&$uri, $config, $context) { |
76 | foreach ($this->filters as $name => $f) { | |
77 | $result = $f->filter($uri, $config, $context); | |
78 | if (!$result) return false; | |
79 | } | |
80 | return true; | |
81 | } | |
82 | ||
83 | public function postFilter(&$uri, $config, $context) { | |
84 | foreach ($this->postFilters as $name => $f) { | |
85 | $result = $f->filter($uri, $config, $context); | |
86 | if (!$result) return false; | |
87 | } | |
88 | return true; | |
89 | } | |
90 | ||
91 | } | |
92 | ||
93 | // vim: et sw=4 sts=4 |