| /** |
| * 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 backtype.storm.security.auth; |
| |
| import java.security.Principal; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| import javax.security.auth.Subject; |
| import javax.servlet.http.HttpServletRequest; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class DefaultHttpCredentialsPlugin implements IHttpCredentialsPlugin { |
| private static final Logger LOG = |
| LoggerFactory.getLogger(DefaultHttpCredentialsPlugin.class); |
| |
| /** |
| * No-op |
| * @param storm_conf Storm configuration |
| */ |
| @Override |
| public void prepare(Map storm_conf) { |
| // Do nothing. |
| } |
| |
| /** |
| * Gets the user name from the request principal. |
| * @param req the servlet request |
| * @return the authenticated user, or null if none is authenticated |
| */ |
| @Override |
| public String getUserName(HttpServletRequest req) { |
| Principal princ; |
| if (req != null && (princ = req.getUserPrincipal()) != null) { |
| String userName = princ.getName(); |
| if (userName != null && !userName.isEmpty()) { |
| LOG.debug("HTTP request had user ("+userName+")"); |
| return userName; |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Populates a given context with a new Subject derived from the |
| * credentials in a servlet request. |
| * @param context the context to be populated |
| * @param req the servlet request |
| * @return the context |
| */ |
| @Override |
| public ReqContext populateContext(ReqContext context, |
| HttpServletRequest req) { |
| String userName = getUserName(req); |
| |
| String doAsUser = req.getHeader("doAsUser"); |
| if(doAsUser == null) { |
| doAsUser = req.getParameter("doAsUser"); |
| } |
| |
| if(doAsUser != null) { |
| context.setRealPrincipal(new SingleUserPrincipal(userName)); |
| userName = doAsUser; |
| } |
| |
| Set<Principal> principals = new HashSet<>(); |
| if(userName != null) { |
| Principal p = new SingleUserPrincipal(userName); |
| principals.add(p); |
| } |
| Subject s = new Subject(true, principals, new HashSet(), new HashSet()); |
| context.setSubject(s); |
| |
| return context; |
| } |
| } |