graphene.security.noop.NoSecurityRealm.java Source code

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Here is the source code for graphene.security.noop.NoSecurityRealm.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 graphene.security.noop;

import graphene.model.idl.G_Permission;
import graphene.model.idl.G_Role;
import graphene.model.idl.G_User;
import graphene.model.idl.G_UserDataAccess;
import graphene.util.validator.ValidationUtils;

import org.apache.avro.AvroRemoteException;
import org.apache.shiro.authc.AccountException;
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.CredentialsMatcher;
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.apache.tapestry5.ioc.annotations.Inject;
import org.slf4j.Logger;

/**
 * A Realm is Shiro terminology for a specialized DAO type object that knows how
 * to deal with Users, Roles, and Permissions. In online examples this is
 * sometimes done by called a different DAO for each of those object types.
 * 
 * With Graphene, we already had a similar object called G_UserDataAccess, which
 * talks to the appropriate DAOs. (G_UserDataAccess also does much more, and
 * deals with workspaces and user groups, etc)
 * 
 * @author djue
 * 
 */
public class NoSecurityRealm extends AuthorizingRealm {
    @Inject
    private G_UserDataAccess userDataAccess;
    @Inject
    private Logger logger;
    private static String REALM_NAME = "grapheneRealm";

    public NoSecurityRealm() {
        setName(REALM_NAME);
        setCredentialsMatcher(new CredentialsMatcher() {
            @Override
            public boolean doCredentialsMatch(final AuthenticationToken token, final AuthenticationInfo info) {
                // This is why it's called the NoSecurityRealm, we're always
                // returning true.
                return true;
            }
        });
    }

    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(final AuthenticationToken authToken)
            throws AuthenticationException {
        final UsernamePasswordToken token = (UsernamePasswordToken) authToken;
        logger.debug("Getting authentication for " + token);
        G_User user = null;
        try {
            user = userDataAccess.getByUsername(token.getUsername());
        } catch (final AvroRemoteException e) {
            logger.error(e.getMessage());
        }
        if (ValidationUtils.isValid(user)) {
            // We are putting the previously stored hashed password in here.
            return new SimpleAuthenticationInfo(user.getUsername(), user.getHashedpassword(), getName());
        } else {
            return null;
        }
    }

    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(final PrincipalCollection principals) {
        final String username = (String) principals.fromRealm(getName()).iterator().next();
        logger.debug("Getting authorization for " + username);
        if (username == null) {
            throw new AccountException("Null usernames are not allowed by this realm.");
        }
        G_User user = null;
        try {
            user = userDataAccess.getByUsername(username);
        } catch (final AvroRemoteException e1) {
            e1.printStackTrace();
        }
        SimpleAuthorizationInfo info = null;
        if (user != null) {
            try {
                info = new SimpleAuthorizationInfo();
                for (final G_Role role : userDataAccess.getRolesByUser(user.getId())) {
                    info.addRole(role.getName());
                    logger.debug("User has role " + role.getName());
                    for (final G_Permission permission : userDataAccess.getPermissionsByRole(role)) {
                        info.addStringPermission(permission.getName());
                        logger.debug("Role has permission " + permission.getName());
                    }
                }
            } catch (final AvroRemoteException e) {
                logger.error(e.getMessage());
            }
        }
        return info;
    }
}