com.appeligo.search.entity.Permissions.java Source code

Introduction

Here is the source code for com.appeligo.search.entity.Permissions.java

Source

/*
 * 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 com.appeligo.search.entity;

import java.util.Arrays;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class Permissions {

    private static final Log log = LogFactory.getLog(Permissions.class);

    public static final ThreadLocal<User> currentUser = new ThreadLocal<User>();

    public static final User SUPERUSER = new User();

    static {
        try {
            SUPERUSER.setUserId(-1);
            SUPERUSER.setUsername("<superuser>");
        } catch (Throwable t) {
            t.printStackTrace();
        }
    }

    public static void setCurrentUser(User user) {
        if (user != null && currentUser.get() != null) {
            log.warn("Changing the user from " + currentUser.get() + " to " + user
                    + ". If you really want to do this, set the user to null first.\n"
                    + Arrays.toString(Thread.currentThread().getStackTrace()).replaceAll(", ", "\n"));
        }
        currentUser.set(user);
    }

    public static User getCurrentUser() {
        return currentUser.get();
    }

    public static void checkUser(User user) {
        if ((getCurrentUser() != SUPERUSER) && (getCurrentUser() != null) && (!getCurrentUser().equals(user))) {
            throw new SecurityException("Invalid user. User id " + user.getUserId()
                    + " does not match current user: " + getCurrentUser());
        }
    }
}