HTMLPurifier 4.4.0
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00001 <?php 00002 00003 class HTMLPurifier_URIDefinition extends HTMLPurifier_Definition 00004 { 00005 00006 public $type = 'URI'; 00007 protected $filters = array(); 00008 protected $postFilters = array(); 00009 protected $registeredFilters = array(); 00010 00014 public $base; 00015 00019 public $host; 00020 00024 public $defaultScheme; 00025 00026 public function __construct() { 00027 $this->registerFilter(new HTMLPurifier_URIFilter_DisableExternal()); 00028 $this->registerFilter(new HTMLPurifier_URIFilter_DisableExternalResources()); 00029 $this->registerFilter(new HTMLPurifier_URIFilter_HostBlacklist()); 00030 $this->registerFilter(new HTMLPurifier_URIFilter_SafeIframe()); 00031 $this->registerFilter(new HTMLPurifier_URIFilter_MakeAbsolute()); 00032 $this->registerFilter(new HTMLPurifier_URIFilter_Munge()); 00033 } 00034 00035 public function registerFilter($filter) { 00036 $this->registeredFilters[$filter->name] = $filter; 00037 } 00038 00039 public function addFilter($filter, $config) { 00040 $r = $filter->prepare($config); 00041 if ($r === false) return; // null is ok, for backwards compat 00042 if ($filter->post) { 00043 $this->postFilters[$filter->name] = $filter; 00044 } else { 00045 $this->filters[$filter->name] = $filter; 00046 } 00047 } 00048 00049 protected function doSetup($config) { 00050 $this->setupMemberVariables($config); 00051 $this->setupFilters($config); 00052 } 00053 00054 protected function setupFilters($config) { 00055 foreach ($this->registeredFilters as $name => $filter) { 00056 if ($filter->always_load) { 00057 $this->addFilter($filter, $config); 00058 } else { 00059 $conf = $config->get('URI.' . $name); 00060 if ($conf !== false && $conf !== null) { 00061 $this->addFilter($filter, $config); 00062 } 00063 } 00064 } 00065 unset($this->registeredFilters); 00066 } 00067 00068 protected function setupMemberVariables($config) { 00069 $this->host = $config->get('URI.Host'); 00070 $base_uri = $config->get('URI.Base'); 00071 if (!is_null($base_uri)) { 00072 $parser = new HTMLPurifier_URIParser(); 00073 $this->base = $parser->parse($base_uri); 00074 $this->defaultScheme = $this->base->scheme; 00075 if (is_null($this->host)) $this->host = $this->base->host; 00076 } 00077 if (is_null($this->defaultScheme)) $this->defaultScheme = $config->get('URI.DefaultScheme'); 00078 } 00079 00080 public function getDefaultScheme($config, $context) { 00081 return HTMLPurifier_URISchemeRegistry::instance()->getScheme($this->defaultScheme, $config, $context); 00082 } 00083 00084 public function filter(&$uri, $config, $context) { 00085 foreach ($this->filters as $name => $f) { 00086 $result = $f->filter($uri, $config, $context); 00087 if (!$result) return false; 00088 } 00089 return true; 00090 } 00091 00092 public function postFilter(&$uri, $config, $context) { 00093 foreach ($this->postFilters as $name => $f) { 00094 $result = $f->filter($uri, $config, $context); 00095 if (!$result) return false; 00096 } 00097 return true; 00098 } 00099 00100 } 00101 00102 // vim: et sw=4 sts=4