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<?php |
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/** |
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* -------------------------------------------------------------------------- |
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* Helper: squantoCleanupString |
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* -------------------------------------------------------------------------- |
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* |
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* Takes an input and cleans up a regular string from unwanted input |
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* |
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* @param string $value |
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* @return string |
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*/ |
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if(!function_exists('squantoCleanupString')) |
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{ |
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function squantoCleanupString( $value ) |
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{ |
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$value = strip_tags($value); |
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return trim($value); |
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} |
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} |
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/** |
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* -------------------------------------------------------------------------- |
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* Helper: squantoCleanupHTML |
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* -------------------------------------------------------------------------- |
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* |
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* Takes an input and cleans up unwanted / malicious HTML |
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* |
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* @param string $value |
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* @param string $whitelist - if false no tagstripping will occur - other than htmlpurifier |
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* @return string |
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*/ |
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if(!function_exists('squantoCleanupHTML')) |
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{ |
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function squantoCleanupHTML( $value, $whitelist = null ) |
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{ |
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if(is_null($whitelist)) |
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{ |
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$whitelist = '<code><span><div><label><a><br><p><b><i><del><strike><u><img><video><audio><iframe><object><embed><param><blockquote><mark><cite><small><ul><ol><li><hr><dl><dt><dd><sup><sub><big><pre><code><figure><figcaption><strong><em><table><tr><td><th><tbody><thead><tfoot><h1><h2><h3><h4><h5><h6>'; |
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} |
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// Strip entire blocks of malicious code |
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$value = preg_replace(array( |
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'@<script[^>]*?>.*?</script>@si', |
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'@onclick=[^ ].*? @si' |
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),'',$value); |
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// strip unwanted tags via whitelist... |
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if(false !== $whitelist) $value = strip_tags($value, $whitelist); |
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// cleanup HTML and any unwanted attributes |
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$config = \HTMLPurifier_Config::createDefault(); |
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$config->set('Cache.SerializerPath', config('squanto.htmlPurifierCache' )); |
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$purifier = new \HTMLPurifier($config); |
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$value = $purifier->purify( $value ); |
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/** |
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* htmlPurifier converts characters to their encode equivalents. This is something |
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* that we need to reverse after the htmlPurifier cleanup. |
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*/ |
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$value = str_replace('&', '&', $value); |
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return $value; |
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} |
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} |
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thinktomorrow /
squanto
