| /** |
| * 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.security.authorize; |
| |
| import java.io.IOException; |
| import java.net.InetAddress; |
| import java.util.IdentityHashMap; |
| import java.util.Map; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.CommonConfigurationKeys; |
| import org.apache.hadoop.security.KerberosInfo; |
| import org.apache.hadoop.security.SecurityUtil; |
| import org.apache.hadoop.security.UserGroupInformation; |
| |
| /** |
| * An authorization manager which handles service-level authorization |
| * for incoming service requests. |
| */ |
| public class ServiceAuthorizationManager { |
| private static final String HADOOP_POLICY_FILE = "hadoop-policy.xml"; |
| private static final Log LOG = LogFactory |
| .getLog(ServiceAuthorizationManager.class); |
| |
| private static Map<Class<?>, AccessControlList> protocolToAcl = |
| new IdentityHashMap<Class<?>, AccessControlList>(); |
| |
| /** |
| * Configuration key for controlling service-level authorization for Hadoop. |
| * |
| * @deprecated Use |
| * {@link CommonConfigurationKeys#HADOOP_SECURITY_AUTHORIZATION} |
| * instead. |
| */ |
| @Deprecated |
| public static final String SERVICE_AUTHORIZATION_CONFIG = |
| "hadoop.security.authorization"; |
| |
| private static final Log AUDITLOG = |
| LogFactory.getLog("SecurityLogger."+ServiceAuthorizationManager.class.getName()); |
| |
| private static final String AUTHZ_SUCCESSFULL_FOR = "Authorization successfull for "; |
| private static final String AUTHZ_FAILED_FOR = "Authorization failed for "; |
| |
| /** |
| * Authorize the user to access the protocol being used. |
| * |
| * @param user user accessing the service |
| * @param protocol service being accessed |
| * @param conf configuration to use |
| * @param addr InetAddress of the client |
| * @throws AuthorizationException on authorization failure |
| */ |
| public static void authorize(UserGroupInformation user, |
| Class<?> protocol, |
| Configuration conf, |
| InetAddress addr |
| ) throws AuthorizationException { |
| AccessControlList acl = protocolToAcl.get(protocol); |
| if (acl == null) { |
| throw new AuthorizationException("Protocol " + protocol + |
| " is not known."); |
| } |
| |
| // get client principal key to verify (if available) |
| KerberosInfo krbInfo = protocol.getAnnotation(KerberosInfo.class); |
| String clientPrincipal = null; |
| if (krbInfo != null) { |
| String clientKey = krbInfo.clientPrincipal(); |
| if (clientKey != null && !clientKey.equals("")) { |
| try { |
| clientPrincipal = SecurityUtil.getServerPrincipal( |
| conf.get(clientKey), addr); |
| } catch (IOException e) { |
| throw (AuthorizationException) new AuthorizationException( |
| "Can't figure out Kerberos principal name for connection from " |
| + addr + " for user=" + user + " protocol=" + protocol) |
| .initCause(e); |
| } |
| } |
| } |
| if((clientPrincipal != null && !clientPrincipal.equals(user.getUserName())) || |
| !acl.isUserAllowed(user)) { |
| AUDITLOG.warn(AUTHZ_FAILED_FOR + user + " for protocol=" + protocol |
| + ", expected client Kerberos principal is " + clientPrincipal); |
| throw new AuthorizationException("User " + user + |
| " is not authorized for protocol " + protocol + |
| ", expected client Kerberos principal is " + clientPrincipal); |
| } |
| AUDITLOG.info(AUTHZ_SUCCESSFULL_FOR + user + " for protocol="+protocol); |
| } |
| |
| public static synchronized void refresh(Configuration conf, |
| PolicyProvider provider) { |
| // Get the system property 'hadoop.policy.file' |
| String policyFile = |
| System.getProperty("hadoop.policy.file", HADOOP_POLICY_FILE); |
| |
| // Make a copy of the original config, and load the policy file |
| Configuration policyConf = new Configuration(conf); |
| policyConf.addResource(policyFile); |
| |
| final Map<Class<?>, AccessControlList> newAcls = |
| new IdentityHashMap<Class<?>, AccessControlList>(); |
| |
| // Parse the config file |
| Service[] services = provider.getServices(); |
| if (services != null) { |
| for (Service service : services) { |
| AccessControlList acl = |
| new AccessControlList( |
| policyConf.get(service.getServiceKey(), |
| AccessControlList.WILDCARD_ACL_VALUE) |
| ); |
| newAcls.put(service.getProtocol(), acl); |
| } |
| } |
| |
| // Flip to the newly parsed permissions |
| protocolToAcl = newAcls; |
| } |
| } |