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diff --git a/www/wiki/includes/utils/MWFileProps.php b/www/wiki/includes/utils/MWFileProps.php
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+++ b/www/wiki/includes/utils/MWFileProps.php
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+<?php
+/**
+ * MimeMagic helper functions for detecting and dealing with MIME types.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+
+/**
+ * MimeMagic helper wrapper
+ *
+ * @since 1.28
+ */
+class MWFileProps {
+	/** @var MimeMagic */
+	private $magic;
+
+	/**
+	 * @param MimeAnalyzer $magic
+	 */
+	public function __construct( MimeAnalyzer $magic ) {
+		$this->magic = $magic;
+	}
+
+	/**
+	 * Get an associative array containing information about
+	 * a file with the given storage path.
+	 *
+	 * Resulting array fields include:
+	 *   - fileExists
+	 *   - size (filesize in bytes)
+	 *   - mime (as major/minor)
+	 *   - media_type (value to be used with the MEDIATYPE_xxx constants)
+	 *   - metadata (handler specific)
+	 *   - sha1 (in base 36)
+	 *   - width
+	 *   - height
+	 *   - bits (bitrate)
+	 *   - file-mime
+	 *   - major_mime
+	 *   - minor_mime
+	 *
+	 * @param string $path Filesystem path to a file
+	 * @param string|bool $ext The file extension, or true to extract it from the filename.
+	 *             Set it to false to ignore the extension.
+	 * @return array
+	 * @since 1.28
+	 */
+	public function getPropsFromPath( $path, $ext ) {
+		$fsFile = new FSFile( $path );
+
+		$info = $this->newPlaceholderProps();
+		$info['fileExists'] = $fsFile->exists();
+		if ( $info['fileExists'] ) {
+			$info['size'] = $fsFile->getSize(); // bytes
+			$info['sha1'] = $fsFile->getSha1Base36();
+
+			# MIME type according to file contents
+			$info['file-mime'] = $this->magic->guessMimeType( $path, false );
+			# Logical MIME type
+			$ext = ( $ext === true ) ? FileBackend::extensionFromPath( $path ) : $ext;
+			$info['mime'] = $this->magic->improveTypeFromExtension( $info['file-mime'], $ext );
+
+			list( $info['major_mime'], $info['minor_mime'] ) = File::splitMime( $info['mime'] );
+			$info['media_type'] = $this->magic->getMediaType( $path, $info['mime'] );
+
+			# Height, width and metadata
+			$handler = MediaHandler::getHandler( $info['mime'] );
+			if ( $handler ) {
+				$info['metadata'] = $handler->getMetadata( $fsFile, $path );
+				/** @noinspection PhpMethodParametersCountMismatchInspection */
+				$gis = $handler->getImageSize( $fsFile, $path, $info['metadata'] );
+				if ( is_array( $gis ) ) {
+					$info = $this->extractImageSizeInfo( $gis ) + $info;
+				}
+			}
+		}
+
+		return $info;
+	}
+
+	/**
+	 * Exract image size information
+	 *
+	 * @param array $gis
+	 * @return array
+	 */
+	private function extractImageSizeInfo( array $gis ) {
+		$info = [];
+		# NOTE: $gis[2] contains a code for the image type. This is no longer used.
+		$info['width'] = $gis[0];
+		$info['height'] = $gis[1];
+		if ( isset( $gis['bits'] ) ) {
+			$info['bits'] = $gis['bits'];
+		} else {
+			$info['bits'] = 0;
+		}
+
+		return $info;
+	}
+
+	/**
+	 * Empty place holder props for non-existing files
+	 *
+	 * Resulting array fields include:
+	 *   - fileExists
+	 *   - size (filesize in bytes)
+	 *   - mime (as major/minor)
+	 *   - media_type (value to be used with the MEDIATYPE_xxx constants)
+	 *   - metadata (handler specific)
+	 *   - sha1 (in base 36)
+	 *   - width
+	 *   - height
+	 *   - bits (bitrate)
+	 *   - file-mime
+	 *   - major_mime
+	 *   - minor_mime
+	 *
+	 * @return array
+	 * @since 1.28
+	 */
+	public function newPlaceholderProps() {
+		return FSFile::placeholderProps() + [
+			'metadata' => '',
+			'width' => 0,
+			'height' => 0,
+			'bits' => 0,
+			'media_type' => MEDIATYPE_UNKNOWN
+		];
+	}
+}