1 files changed, 87 insertions, 0 deletions
diff --git a/www/wiki/extensions/CSS/CSS.class.php b/www/wiki/extensions/CSS/CSS.class.php
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+++ b/www/wiki/extensions/CSS/CSS.class.php
@@ -0,0 +1,87 @@
+<?php
+/**
+ * CSS extension - A parser-function for adding CSS to articles via file,
+ * article or inline rules.
+ *
+ * See https://www.mediawiki.org/wiki/Extension:CSS for installation and usage
+ * details.
+ *
+ * @file
+ * @ingroup Extensions
+ * @author Aran Dunkley [http://www.organicdesign.co.nz/nad User:Nad]
+ * @author Rusty Burchfield
+ * @copyright © 2007-2010 Aran Dunkley
+ * @copyright © 2011 Rusty Burchfield
+ * @license GPL-2.0-or-later
+ */
+
+class CSS {
+
+	/**
+	 * @param Parser $parser
+	 * @param string $css
+	 * @return string
+	 */
+	public static function CSSRender( &$parser, $css ) {
+		global $wgCSSPath, $wgStylePath, $wgCSSIdentifier;
+
+		$css = trim( $css );
+		$title = Title::newFromText( $css );
+		$rawProtection = "$wgCSSIdentifier=1";
+		$headItem = '<!-- Begin Extension:CSS -->';
+
+		if ( is_object( $title ) && $title->exists() ) {
+			# Article actually in the db
+			$params = "action=raw&ctype=text/css&$rawProtection";
+			$url = $title->getLocalURL( $params );
+			$headItem .= Html::linkedStyle( $url );
+		} elseif ( $css[0] == '/' ) {
+			# Regular file
+			$base = $wgCSSPath === false ? $wgStylePath : $wgCSSPath;
+			$url = wfAppendQuery( $base . $css, $rawProtection );
+
+			# Verify the expanded URL is still using the base URL
+			if ( strpos( wfExpandUrl( $url ), wfExpandUrl( $base ) ) === 0 ) {
+				$headItem .= Html::linkedStyle( $url );
+			} else {
+				$headItem .= '<!-- Invalid/malicious path  -->';
+			}
+		} else {
+			# sanitized user CSS
+			$css = Sanitizer::checkCss( $css );
+
+			# Encode data URI and append link tag
+			$dataPrefix = 'data:text/css;charset=UTF-8;base64,';
+			$url = $dataPrefix . base64_encode( $css );
+
+			$headItem .= Html::linkedStyle( $url );
+		}
+
+		$headItem .= '<!-- End Extension:CSS -->';
+		$parser->getOutput()->addHeadItem( $headItem );
+		return '';
+	}
+
+	/**
+	 * @param Parser $parser
+	 * @return bool true
+	 */
+	public static function onParserFirstCallInit( $parser ) {
+		$parser->setFunctionHook( 'css', 'CSS::CSSRender' );
+		return true;
+	}
+
+	/**
+	 * @param RawPage $rawPage
+	 * @param string $text
+	 * @return bool true
+	 */
+	public static function onRawPageViewBeforeOutput( &$rawPage, &$text ) {
+		global $wgCSSIdentifier;
+
+		if ( $rawPage->getRequest()->getBool( $wgCSSIdentifier ) ) {
+			$text = Sanitizer::checkCss( $text );
+		}
+		return true;
+	}
+}