/**
* 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.zookeeper.server.jersey.filters;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.zookeeper.server.jersey.cfg.Credentials;
import com.sun.jersey.core.util.Base64;
public class HTTPBasicAuth implements Filter {
private Credentials credentials;
public HTTPBasicAuth(Credentials c) {
credentials = c;
}
@Override
public void doFilter(ServletRequest req0, ServletResponse resp0,
FilterChain chain) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) req0;
HttpServletResponse response = (HttpServletResponse) resp0;
String authorization = request.getHeader("Authorization");
if (authorization != null) {
String c[] = parseAuthorization(authorization);
if (c != null && credentials.containsKey(c[0])
&& credentials.get(c[0]).equals(c[1])) {
chain.doFilter(request, response);
return;
}
}
response.setHeader("WWW-Authenticate", "Basic realm=\"Restricted\"");
response.sendError(401);
}
private String[] parseAuthorization(String authorization) {
String parts[] = authorization.split(" ");
if (parts.length == 2 && parts[0].equalsIgnoreCase("Basic")) {
String userPass = Base64.base64Decode(parts[1]);
int p = userPass.indexOf(":");
if (p != -1) {
return new String[] { userPass.substring(0, p),
userPass.substring(p + 1) };
}
}
return null;
}
@Override
public void init(FilterConfig arg0) throws ServletException {
}
@Override
public void destroy() {
}
}