| 1: | <?php
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| 2: |
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| 3: | class HTMLPurifier_URIDefinition extends HTMLPurifier_Definition
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| 4: | {
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| 5: |
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| 6: | public $type = 'URI';
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| 7: | protected $filters = array();
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| 8: | protected $postFilters = array();
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| 9: | protected $registeredFilters = array();
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| 10: |
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| 11: | |
| 12: | |
| 13: |
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| 14: | public $base;
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| 15: |
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| 16: | |
| 17: | |
| 18: |
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| 19: | public $host;
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| 20: |
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| 21: | |
| 22: | |
| 23: |
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| 24: | public $defaultScheme;
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| 25: |
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| 26: | public function __construct()
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| 27: | {
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| 28: | $this->registerFilter(new HTMLPurifier_URIFilter_DisableExternal());
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| 29: | $this->registerFilter(new HTMLPurifier_URIFilter_DisableExternalResources());
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| 30: | $this->registerFilter(new HTMLPurifier_URIFilter_DisableResources());
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| 31: | $this->registerFilter(new HTMLPurifier_URIFilter_HostBlacklist());
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| 32: | $this->registerFilter(new HTMLPurifier_URIFilter_SafeIframe());
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| 33: | $this->registerFilter(new HTMLPurifier_URIFilter_MakeAbsolute());
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| 34: | $this->registerFilter(new HTMLPurifier_URIFilter_Munge());
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| 35: | }
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| 36: |
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| 37: | public function registerFilter($filter)
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| 38: | {
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| 39: | $this->registeredFilters[$filter->name] = $filter;
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| 40: | }
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| 41: |
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| 42: | public function addFilter($filter, $config)
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| 43: | {
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| 44: | $r = $filter->prepare($config);
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| 45: | if ($r === false) return;
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| 46: | if ($filter->post) {
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| 47: | $this->postFilters[$filter->name] = $filter;
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| 48: | } else {
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| 49: | $this->filters[$filter->name] = $filter;
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| 50: | }
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| 51: | }
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| 52: |
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| 53: | protected function doSetup($config)
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| 54: | {
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| 55: | $this->setupMemberVariables($config);
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| 56: | $this->setupFilters($config);
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| 57: | }
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| 58: |
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| 59: | protected function setupFilters($config)
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| 60: | {
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| 61: | foreach ($this->registeredFilters as $name => $filter) {
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| 62: | if ($filter->always_load) {
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| 63: | $this->addFilter($filter, $config);
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| 64: | } else {
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| 65: | $conf = $config->get('URI.' . $name);
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| 66: | if ($conf !== false && $conf !== null) {
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| 67: | $this->addFilter($filter, $config);
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| 68: | }
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| 69: | }
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| 70: | }
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| 71: | unset($this->registeredFilters);
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| 72: | }
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| 73: |
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| 74: | protected function setupMemberVariables($config)
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| 75: | {
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| 76: | $this->host = $config->get('URI.Host');
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| 77: | $base_uri = $config->get('URI.Base');
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| 78: | if (!is_null($base_uri)) {
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| 79: | $parser = new HTMLPurifier_URIParser();
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| 80: | $this->base = $parser->parse($base_uri);
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| 81: | $this->defaultScheme = $this->base->scheme;
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| 82: | if (is_null($this->host)) $this->host = $this->base->host;
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| 83: | }
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| 84: | if (is_null($this->defaultScheme)) $this->defaultScheme = $config->get('URI.DefaultScheme');
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| 85: | }
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| 86: |
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| 87: | public function getDefaultScheme($config, $context)
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| 88: | {
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| 89: | return HTMLPurifier_URISchemeRegistry::instance()->getScheme($this->defaultScheme, $config, $context);
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| 90: | }
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| 91: |
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| 92: | public function filter(&$uri, $config, $context)
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| 93: | {
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| 94: | foreach ($this->filters as $name => $f) {
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| 95: | $result = $f->filter($uri, $config, $context);
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| 96: | if (!$result) return false;
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| 97: | }
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| 98: | return true;
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| 99: | }
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| 100: |
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| 101: | public function postFilter(&$uri, $config, $context)
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| 102: | {
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| 103: | foreach ($this->postFilters as $name => $f) {
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| 104: | $result = $f->filter($uri, $config, $context);
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| 105: | if (!$result) return false;
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| 106: | }
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| 107: | return true;
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| 108: | }
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| 109: |
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| 110: | }
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| 111: |
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| 112: |
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| 113: | |