pkp/pkp-lib#7916 revert back symfony html sanitizer and bring back ht…

…ml purifier (#46)

OAIMetadataFormat_JATS.php

@@ -25,8 +25,6 @@
 use APP\core\Services;
 use PKP\core\PKPString;
 use PKP\plugins\Hook;
-use Symfony\Component\HtmlSanitizer\HtmlSanitizer;
-use Symfony\Component\HtmlSanitizer\HtmlSanitizerConfig;
 
 class OAIMetadataFormat_JATS extends OAIMetadataFormat {
 	/**
@@ -325,17 +323,21 @@ protected function _mungeMetadata($doc, $journal, $article, $section, $issue) {
 		}
 
 		// Set the article abstract.
-		static $sanitizer = null;
-		if (!$sanitizer) {
-			$sanitizer = new \PKP\core\PKPHtmlSanitizer('p');
+		static $purifier;
+		if (!$purifier) {
+			$config = \HTMLPurifier_Config::createDefault();
+			$config->set('HTML.Allowed', 'p');
+			$config->set('Cache.SerializerPath', 'cache');
+			$purifier = new \HTMLPurifier($config);
 		}
+
 		foreach ($articleMetaNode->getElementsByTagName('abstract') as $abstractNode) $articleMetaNode->removeChild($abstractNode);
 		foreach ((array) $publication->getData('abstract') as $locale => $abstract) {
 			if (empty($abstract)) continue;
 			$isPrimary = $locale == $article->getLocale();
 			$abstractDoc = new \DOMDocument;
 			if (strpos($abstract, '<p>')===null) $abstract = "<p>$abstract</p>";
-			$abstractDoc->loadXML(($isPrimary?'<abstract>':'<trans-abstract>') . $sanitizer->sanitize($abstract) . ($isPrimary?'</abstract>':'</trans-abstract>'));
+			$abstractDoc->loadXML(($isPrimary?'<abstract>':'<trans-abstract>') . $purifier->purify($abstract) . ($isPrimary?'</abstract>':'</trans-abstract>'));
 			$abstractNode = $this->_addChildInOrder($articleMetaNode, $doc->importNode($abstractDoc->documentElement, true));
 			if (!$isPrimary) $abstractNode->setAttribute('xml:lang', substr($locale,0,2));
 		}