org.apache.dubbo.common.utils.SerializeClassChecker Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of dubbo Show documentation
Show all versions of dubbo Show documentation
The all in one project of dubbo
/*
* 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.dubbo.common.utils;
import org.apache.dubbo.common.beanutil.JavaBeanSerializeUtil;
import org.apache.dubbo.common.config.ConfigurationUtils;
import org.apache.dubbo.common.constants.CommonConstants;
import org.apache.dubbo.common.logger.ErrorTypeAwareLogger;
import org.apache.dubbo.common.logger.LoggerFactory;
import java.io.IOException;
import java.util.Arrays;
import java.util.Locale;
import java.util.Set;
import java.util.concurrent.atomic.AtomicLong;
import static org.apache.dubbo.common.constants.CommonConstants.CLASS_DESERIALIZE_ALLOWED_LIST;
import static org.apache.dubbo.common.constants.CommonConstants.CLASS_DESERIALIZE_BLOCKED_LIST;
import static org.apache.dubbo.common.constants.CommonConstants.CLASS_DESERIALIZE_BLOCK_ALL;
import static org.apache.dubbo.common.constants.CommonConstants.SERIALIZE_BLOCKED_LIST_FILE_PATH;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.COMMON_IO_EXCEPTION;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.PROTOCOL_UNSAFE_SERIALIZATION;
public class SerializeClassChecker {
private static final ErrorTypeAwareLogger logger = LoggerFactory.getErrorTypeAwareLogger(SerializeClassChecker.class);
private static volatile SerializeClassChecker INSTANCE = null;
private final boolean OPEN_CHECK_CLASS;
private final boolean BLOCK_ALL_CLASS_EXCEPT_ALLOW;
private final Set CLASS_DESERIALIZE_ALLOWED_SET = new ConcurrentHashSet<>();
private final Set CLASS_DESERIALIZE_BLOCKED_SET = new ConcurrentHashSet<>();
private final Object CACHE = new Object();
private final LFUCache CLASS_ALLOW_LFU_CACHE = new LFUCache<>();
private final LFUCache CLASS_BLOCK_LFU_CACHE = new LFUCache<>();
private final AtomicLong counter = new AtomicLong(0);
private SerializeClassChecker() {
String openCheckClass = ConfigurationUtils.getProperty(CommonConstants.CLASS_DESERIALIZE_OPEN_CHECK, "true");
OPEN_CHECK_CLASS = Boolean.parseBoolean(openCheckClass);
String blockAllClassExceptAllow = ConfigurationUtils.getProperty(CLASS_DESERIALIZE_BLOCK_ALL, "false");
BLOCK_ALL_CLASS_EXCEPT_ALLOW = Boolean.parseBoolean(blockAllClassExceptAllow);
String[] lines;
try {
ClassLoader classLoader = ClassUtils.getClassLoader(JavaBeanSerializeUtil.class);
if (classLoader != null) {
lines = IOUtils.readLines(classLoader.getResourceAsStream(SERIALIZE_BLOCKED_LIST_FILE_PATH));
} else {
lines = IOUtils.readLines(ClassLoader.getSystemResourceAsStream(SERIALIZE_BLOCKED_LIST_FILE_PATH));
}
for (String line : lines) {
line = line.trim();
if (StringUtils.isEmpty(line) || line.startsWith("#")) {
continue;
}
CLASS_DESERIALIZE_BLOCKED_SET.add(line);
}
} catch (IOException e) {
logger.error(COMMON_IO_EXCEPTION, "", "", "Failed to load blocked class list! Will ignore default blocked list.", e);
}
String allowedClassList = ConfigurationUtils.getProperty(CLASS_DESERIALIZE_ALLOWED_LIST, "").trim().toLowerCase(Locale.ROOT);
String blockedClassList = ConfigurationUtils.getProperty(CLASS_DESERIALIZE_BLOCKED_LIST, "").trim().toLowerCase(Locale.ROOT);
if (StringUtils.isNotEmpty(allowedClassList)) {
String[] classStrings = allowedClassList.trim().split(",");
CLASS_DESERIALIZE_ALLOWED_SET.addAll(Arrays.asList(classStrings));
}
if (StringUtils.isNotEmpty(blockedClassList)) {
String[] classStrings = blockedClassList.trim().split(",");
CLASS_DESERIALIZE_BLOCKED_SET.addAll(Arrays.asList(classStrings));
}
}
public static SerializeClassChecker getInstance() {
if (INSTANCE == null) {
synchronized (SerializeClassChecker.class) {
if (INSTANCE == null) {
INSTANCE = new SerializeClassChecker();
}
}
}
return INSTANCE;
}
/**
* For ut only
*/
@Deprecated
protected static void clearInstance() {
INSTANCE = null;
}
/**
* Check if a class is in block list, using prefix match
*
* @param name class name ( all are convert to lower case )
* @throws IllegalArgumentException if class is blocked
*/
public void validateClass(String name) {
if (!OPEN_CHECK_CLASS) {
return;
}
name = name.toLowerCase(Locale.ROOT);
if (CACHE == CLASS_ALLOW_LFU_CACHE.get(name)) {
return;
}
if (CACHE == CLASS_BLOCK_LFU_CACHE.get(name)) {
error(name);
}
for (String allowedPrefix : CLASS_DESERIALIZE_ALLOWED_SET) {
if (name.startsWith(allowedPrefix)) {
CLASS_ALLOW_LFU_CACHE.put(name, CACHE);
return;
}
}
for (String blockedPrefix : CLASS_DESERIALIZE_BLOCKED_SET) {
if (BLOCK_ALL_CLASS_EXCEPT_ALLOW || name.startsWith(blockedPrefix)) {
CLASS_BLOCK_LFU_CACHE.put(name, CACHE);
error(name);
}
}
CLASS_ALLOW_LFU_CACHE.put(name, CACHE);
}
private void error(String name) {
String notice = "Trigger the safety barrier! " +
"Catch not allowed serialize class. " +
"Class name: " + name + " . " +
"This means currently maybe being attacking by others." +
"If you are sure this is a mistake, " +
"please add this class name to `" + CLASS_DESERIALIZE_ALLOWED_LIST +
"` as a system environment property.";
if (counter.incrementAndGet() % 1000 == 0 || counter.get() < 100) {
logger.error(PROTOCOL_UNSAFE_SERIALIZATION, "", "", notice);
}
throw new IllegalArgumentException(notice);
}
}