mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/RSS
synced 2024-11-24 07:43:56 +00:00
100 lines
2.7 KiB
PHP
100 lines
2.7 KiB
PHP
<?php
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class RSSHooks {
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/**
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* Tell the parser how to handle <rss> elements
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* @param $parser Parser Object
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* @return bool
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*/
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static function onParserFirstCallInit( $parser ) {
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// Install parser hook for <rss> tags
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$parser->setHook( 'rss', [ __CLASS__, 'renderRss' ] );
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return true;
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}
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/**
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* Static function wrapping RSSParser to handle rendering of RSS elements
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* @param $input String: text inside the tags.
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* @param $args Array: value associative list of the element attributes and
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* their values.
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* @param $parser Parser
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* @param $frame PPFrame parser context
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* @return string
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*/
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static function renderRss( $input, array $args, Parser $parser, PPFrame $frame ) {
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global $wgRSSCacheAge, $wgRSSCacheCompare, $wgRSSNamespaces,
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$wgRSSUrlWhitelist,$wgRSSAllowedFeeds;
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if ( is_array( $wgRSSNamespaces ) && count( $wgRSSNamespaces ) ) {
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$ns = $parser->getTitle()->getNamespace();
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$checkNS = array_flip( $wgRSSNamespaces );
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if ( !isset( $checkNS[$ns] ) ) {
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return RSSUtils::RSSError( 'rss-ns-permission' );
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}
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}
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if ( isset( $wgRSSAllowedFeeds ) ) {
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return RSSUtils::RSSError( 'rss-deprecated-wgrssallowedfeeds-found' );
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}
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# disallow because there is no whitelist at all or an empty whitelist
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if ( !isset( $wgRSSUrlWhitelist )
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|| !is_array( $wgRSSUrlWhitelist )
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|| ( count( $wgRSSUrlWhitelist ) === 0 ) ) {
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return RSSUtils::RSSError( 'rss-empty-whitelist',
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$input
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);
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}
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# disallow the feed url because the url is not whitelisted; or
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# disallow because the wildcard joker is not present to allow any feed url
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# which can be dangerous
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if ( !( in_array( $input, $wgRSSUrlWhitelist ) )
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&& !( in_array( "*", $wgRSSUrlWhitelist ) ) ) {
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$listOfAllowed = $parser->getFunctionLang()->listToText( $wgRSSUrlWhitelist );
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$numberAllowed = $parser->getFunctionLang()->formatNum( count( $wgRSSUrlWhitelist ) );
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return RSSUtils::RSSError( 'rss-url-is-not-whitelisted',
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[ $input, $listOfAllowed, $numberAllowed ]
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);
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}
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if ( !Http::isValidURI( $input ) ) {
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return RSSUtils::RSSError( 'rss-invalid-url', htmlspecialchars( $input ) );
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}
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if ( $wgRSSCacheCompare ) {
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$timeout = $wgRSSCacheCompare;
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} else {
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$timeout = $wgRSSCacheAge;
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}
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$parser->getOutput()->updateCacheExpiry( $timeout );
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$rss = new RSSParser( $input, $args );
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$status = $rss->fetch();
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# Check for errors.
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if ( !$status->isGood() ) {
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return wfMessage( 'rss-error', htmlspecialchars( $input ), $status->getWikiText() )->text();
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}
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if ( !is_object( $rss->rss ) || !is_array( $rss->rss->items ) ) {
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return RSSUtils::RSSError( 'rss-empty', htmlspecialchars( $input ) );
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}
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return $rss->renderFeed( $parser, $frame );
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}
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}
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