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113 lines
3.3 KiB
113 lines
3.3 KiB
4 years ago
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<?php
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class HTMLPurifier_URIDefinition extends HTMLPurifier_Definition
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{
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public $type = 'URI';
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protected $filters = array();
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protected $postFilters = array();
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protected $registeredFilters = array();
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/**
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* HTMLPurifier_URI object of the base specified at %URI.Base
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*/
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public $base;
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/**
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* String host to consider "home" base, derived off of $base
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*/
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public $host;
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/**
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* Name of default scheme based on %URI.DefaultScheme and %URI.Base
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*/
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public $defaultScheme;
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public function __construct()
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{
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$this->registerFilter(new HTMLPurifier_URIFilter_DisableExternal());
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$this->registerFilter(new HTMLPurifier_URIFilter_DisableExternalResources());
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$this->registerFilter(new HTMLPurifier_URIFilter_DisableResources());
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$this->registerFilter(new HTMLPurifier_URIFilter_HostBlacklist());
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$this->registerFilter(new HTMLPurifier_URIFilter_SafeIframe());
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$this->registerFilter(new HTMLPurifier_URIFilter_MakeAbsolute());
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$this->registerFilter(new HTMLPurifier_URIFilter_Munge());
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}
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public function registerFilter($filter)
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{
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$this->registeredFilters[$filter->name] = $filter;
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}
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public function addFilter($filter, $config)
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{
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$r = $filter->prepare($config);
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if ($r === false) return; // null is ok, for backwards compat
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if ($filter->post) {
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$this->postFilters[$filter->name] = $filter;
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} else {
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$this->filters[$filter->name] = $filter;
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}
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}
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protected function doSetup($config)
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{
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$this->setupMemberVariables($config);
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$this->setupFilters($config);
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}
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protected function setupFilters($config)
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{
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foreach ($this->registeredFilters as $name => $filter) {
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if ($filter->always_load) {
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$this->addFilter($filter, $config);
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} else {
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$conf = $config->get('URI.' . $name);
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if ($conf !== false && $conf !== null) {
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$this->addFilter($filter, $config);
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}
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}
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}
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unset($this->registeredFilters);
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}
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protected function setupMemberVariables($config)
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{
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$this->host = $config->get('URI.Host');
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$base_uri = $config->get('URI.Base');
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if (!is_null($base_uri)) {
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$parser = new HTMLPurifier_URIParser();
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$this->base = $parser->parse($base_uri);
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$this->defaultScheme = $this->base->scheme;
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if (is_null($this->host)) $this->host = $this->base->host;
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}
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if (is_null($this->defaultScheme)) $this->defaultScheme = $config->get('URI.DefaultScheme');
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}
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public function getDefaultScheme($config, $context)
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{
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return HTMLPurifier_URISchemeRegistry::instance()->getScheme($this->defaultScheme, $config, $context);
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}
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public function filter(&$uri, $config, $context)
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{
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foreach ($this->filters as $name => $f) {
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$result = $f->filter($uri, $config, $context);
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if (!$result) return false;
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}
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return true;
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}
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public function postFilter(&$uri, $config, $context)
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{
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foreach ($this->postFilters as $name => $f) {
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$result = $f->filter($uri, $config, $context);
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if (!$result) return false;
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}
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return true;
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}
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}
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// vim: et sw=4 sts=4
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