| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.spark.launcher; |
| |
| import java.io.InputStream; |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectStreamClass; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| /** |
| * An object input stream that only allows classes used by the launcher protocol to be in the |
| * serialized stream. See SPARK-20922. |
| */ |
| class FilteredObjectInputStream extends ObjectInputStream { |
| |
| private static final List<String> ALLOWED_PACKAGES = Arrays.asList( |
| "org.apache.spark.launcher.", |
| "java.lang."); |
| |
| FilteredObjectInputStream(InputStream is) throws IOException { |
| super(is); |
| } |
| |
| @Override |
| protected Class<?> resolveClass(ObjectStreamClass desc) |
| throws IOException, ClassNotFoundException { |
| |
| boolean isValid = ALLOWED_PACKAGES.stream().anyMatch(p -> desc.getName().startsWith(p)); |
| if (!isValid) { |
| throw new IllegalArgumentException( |
| String.format("Unexpected class in stream: %s", desc.getName())); |
| } |
| return super.resolveClass(desc); |
| } |
| |
| } |