- missed one file

services/bbb-web-api/src/java/org/bigbluebutton/api/Util.java

+package org.bigbluebutton.api;
+
+import java.util.regex.Pattern;
+
+public final class Util {
+
+	public static String cleanPresentationFilename(String name) {
+		String cleanFilename = Pattern.compile("[^0-9a-zA-Z_.]").matcher(name).replaceAll("-");
+		if (cleanFilename.startsWith(".")) {
+			return cleanFilename.substring(1);
+		} else {
+			return cleanFilename;
+		}
+	}
+}