com.uunemo.security.NemoRealm.java Source code

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Here is the source code for com.uunemo.security.NemoRealm.java

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/*
 * 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.uunemo.security;

import java.util.HashSet;
import java.util.Set;

import javax.annotation.Resource;

import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.authc.credential.Sha256CredentialsMatcher;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import com.uunemo.beans.Permission;
import com.uunemo.beans.Role;
import com.uunemo.beans.User;
import com.uunemo.daos.UserDao;

/**
 * The Spring/Hibernate sample application's one and only configured Apache Shiro Realm.
 *
 * <p>Because a Realm is really just a security-specific DAO, we could have just made Hibernate calls directly
 * in the implementation and named it a 'HibernateRealm' or something similar.</p>
 *
 * <p>But we've decided to make the calls to the database using a UserDAO, since a DAO would be used in other areas
 * of a 'real' application in addition to here. We felt it better to use that same DAO to show code re-use.</p>
 */
@Component(value = "nemoRealm")
public class NemoRealm extends AuthorizingRealm {

    @Resource(name = "UserDao")
    protected UserDao userDAO;

    public NemoRealm() {

        setName("NemoRealm"); //This name must match the name in the User class's getPrincipals() method
        //        setCredentialsMatcher(new Sha256CredentialsMatcher());
    }

    //    @Autowired
    //    public void setUserDAO(UserDAO userDAO) {
    //        this.userDAO = userDAO;
    //    }

    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authcToken)
            throws AuthenticationException {
        UsernamePasswordToken token = (UsernamePasswordToken) authcToken;
        User user = (User) userDAO.findByEmail(token.getUsername());
        if (user != null) {
            return new SimpleAuthenticationInfo(user.getUsername(), user.getPassword(), getName());
            //           return new SimpleAuthenticationInfo(user.getUserid(), user.getPassword(), getName());
        } else {
            return null;
        }
    }

    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
        //       Integer userId = (Integer) principals.fromRealm(getName()).iterator().next();
        //        User user = userDAO.findById(userId);

        String email = (String) principals.fromRealm(getName()).iterator().next();
        User user = (User) userDAO.findByEmail(email);

        Set permissionSet = new HashSet<String>();
        if (user != null) {
            SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
            for (Role role : user.getRoles()) {
                info.addRole(role.getRoleName());
                permissionSet.clear();
                for (Permission permission : role.getPermissions()) {
                    permissionSet.add(permission.getPermissionName());
                }
                //?permissioninfo
                info.addStringPermissions(permissionSet);
            }
            return info;
        } else {
            return null;
        }
    }

}