| /** |
| * 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.hadoop.lib.wsrs; |
| |
| import com.sun.jersey.api.core.HttpContext; |
| import com.sun.jersey.core.spi.component.ComponentContext; |
| import com.sun.jersey.core.spi.component.ComponentScope; |
| import com.sun.jersey.server.impl.inject.AbstractHttpContextInjectable; |
| import com.sun.jersey.spi.inject.Injectable; |
| import com.sun.jersey.spi.inject.InjectableProvider; |
| import org.slf4j.MDC; |
| |
| import javax.ws.rs.core.Context; |
| import javax.ws.rs.ext.Provider; |
| import java.lang.reflect.Type; |
| import java.security.Principal; |
| import java.util.regex.Pattern; |
| |
| @Provider |
| public class UserProvider extends AbstractHttpContextInjectable<Principal> implements |
| InjectableProvider<Context, Type> { |
| |
| public static final String USER_NAME_PARAM = "user.name"; |
| |
| public static final Pattern USER_PATTERN = Pattern.compile("[_a-zA-Z0-9]+"); |
| |
| private static class UserParam extends StringParam { |
| |
| public UserParam(String user) { |
| super(USER_NAME_PARAM, user, USER_PATTERN); |
| } |
| } |
| |
| @Override |
| public Principal getValue(HttpContext httpContext) { |
| Principal principal = httpContext.getRequest().getUserPrincipal(); |
| if (principal == null) { |
| final String user = httpContext.getRequest().getQueryParameters().getFirst(USER_NAME_PARAM); |
| if (user != null) { |
| principal = new Principal() { |
| @Override |
| public String getName() { |
| return new UserParam(user).value(); |
| } |
| }; |
| } |
| } |
| if (principal != null) { |
| MDC.put("user", principal.getName()); |
| } |
| return principal; |
| } |
| |
| @Override |
| public ComponentScope getScope() { |
| return ComponentScope.PerRequest; |
| } |
| |
| @Override |
| public Injectable getInjectable(ComponentContext componentContext, Context context, Type type) { |
| return (type.equals(Principal.class)) ? this : null; |
| } |
| } |