ConnectionPermission.java
上传用户:quxuerui
上传日期:2018-01-08
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文件大小:2k
- /**
- * 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.security.Permission;
- import org.apache.hadoop.ipc.VersionedProtocol;
- /**
- * {@link Permission} to initiate a connection to a given service.
- */
- public class ConnectionPermission extends Permission {
- private static final long serialVersionUID = 1L;
- private final Class<?> protocol;
- /**
- * {@link ConnectionPermission} for a given service.
- * @param protocol service to be accessed
- */
- public ConnectionPermission(Class<?> protocol) {
- super(protocol.getName());
- this.protocol = protocol;
- }
- @Override
- public boolean equals(Object obj) {
- if (obj instanceof ConnectionPermission) {
- return protocol == ((ConnectionPermission)obj).protocol;
- }
- return false;
- }
- @Override
- public String getActions() {
- return "ALLOW";
- }
- @Override
- public int hashCode() {
- return protocol.hashCode();
- }
- @Override
- public boolean implies(Permission permission) {
- if (permission instanceof ConnectionPermission) {
- ConnectionPermission that = (ConnectionPermission)permission;
- if (that.protocol.equals(VersionedProtocol.class)) {
- return true;
- }
- return this.protocol.equals(that.protocol);
- }
- return false;
- }
- public String toString() {
- return "ConnectionPermission(" + protocol.getName() + ")";
- }
- }