最近想看看Tomcat的源码,按照网上的教程操作后, 发现test包下仍有报错, 是由于CookieFilter类找不到,于是请教百度,发现搜不到相关的处理方式,最后千辛万苦在Github上找到了这个类的代码, 贴出来大家可以拷到test/util中。
/*
* 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 util;
import java.util.Locale;
import java.util.StringTokenizer;
/**
* Processes a cookie header and attempts to obfuscate any cookie values that
* represent session IDs from other web applications. Since session cookie names
* are configurable, as are session ID lengths, this filter is not expected to
* be 100% effective.
*
* It is required that the examples web application is removed in security
* conscious environments as documented in the Security How-To. This filter is
* intended to reduce the impact of failing to follow that advice. A failure by
* this filter to obfuscate a session ID or similar value is not a security
* vulnerability. In such instances the vulnerability is the failure to remove
* the examples web application.
*/
public class CookieFilter {
private static final String OBFUSCATED = "[obfuscated]";
private CookieFilter() {
// Hide default constructor
}
public static String filter(String cookieHeader, String sessionId) {
StringBuilder sb = new StringBuilder(cookieHeader.length());
// Cookie name value pairs are ';' separated.
// Session IDs don't use ; in the value so don't worry about quoted
// values that contain ;
StringTokenizer st = new StringTokenizer(cookieHeader, ";");
boolean first = true;
while (st.hasMoreTokens()) {
if (first) {
first = false;
} else {
sb.append(';');
}
sb.append(filterNameValuePair(st.nextToken(), sessionId));
}
return sb.toString();
}
private static String filterNameValuePair(String input, String sessionId) {
int i = input.indexOf('=');
if (i == -1) {
return input;
}
String name = input.substring(0, i);
String value = input.substring(i + 1, input.length());
return name + "=" + filter(name, value, sessionId);
}
public static String filter(String cookieName, String cookieValue, String sessionId) {
if (cookieName.toLowerCase(Locale.ENGLISH).contains("jsessionid") &&
(sessionId == null || !cookieValue.contains(sessionId))) {
cookieValue = OBFUSCATED;
}
return cookieValue;
}
}
网友评论