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ShiroAuthManager.java
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ShiroAuthManager.java
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/*
* Copyright (c) 2002-2016 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.server.security.enterprise.auth;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.ExpiredCredentialsException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.cache.ehcache.EhCacheManager;
import org.apache.shiro.mgt.DefaultSecurityManager;
import org.apache.shiro.mgt.SecurityManager;
import org.apache.shiro.subject.Subject;
import java.io.IOException;
import java.time.Clock;
import org.neo4j.graphdb.security.AuthorizationViolationException;
import org.neo4j.kernel.api.security.AuthSubject;
import org.neo4j.kernel.api.security.AuthenticationResult;
import org.neo4j.kernel.api.security.exception.IllegalCredentialsException;
import org.neo4j.server.security.auth.AuthenticationStrategy;
import org.neo4j.server.security.auth.BasicAuthManager;
import org.neo4j.server.security.auth.PasswordPolicy;
import org.neo4j.server.security.auth.RateLimitedAuthenticationStrategy;
import org.neo4j.server.security.auth.User;
import org.neo4j.server.security.auth.UserRepository;
public class ShiroAuthManager extends BasicAuthManager
{
private final SecurityManager securityManager;
private final EhCacheManager cacheManager;
private final FileUserRealm realm;
public ShiroAuthManager( UserRepository userRepository, PasswordPolicy passwordPolicy, AuthenticationStrategy authStrategy, boolean authEnabled )
{
super( userRepository, passwordPolicy, authStrategy, authEnabled );
realm = new FileUserRealm( userRepository );
// TODO: Maybe MemoryConstrainedCacheManager is good enough if we do not need timeToLiveSeconds? It would be one less dependency.
// Or we could try to reuse Hazelcast which is already a dependency, but we would need to write some glue code.
cacheManager = new EhCacheManager();
securityManager = new DefaultSecurityManager( realm );
}
public ShiroAuthManager( UserRepository users, PasswordPolicy passwordPolicy, AuthenticationStrategy authStrategy )
{
this( users, passwordPolicy, authStrategy, true );
}
public ShiroAuthManager( UserRepository users, PasswordPolicy passwordPolicy, Clock clock, boolean authEnabled )
{
this( users, passwordPolicy, new RateLimitedAuthenticationStrategy( clock, 3 ), authEnabled );
}
@Override
public void init() throws Throwable
{
super.init();
cacheManager.init();
realm.setCacheManager( cacheManager );
realm.init();
}
@Override
public void start() throws Throwable
{
users.start();
if ( authEnabled && realm.numberOfUsers() == 0 )
{
realm.newUser( "neo4j", DEFAULT_GROUP, "neo4j", true );
}
}
@Override
public void shutdown() throws Throwable
{
super.shutdown();
realm.setCacheManager( null );
cacheManager.destroy();
}
@Override
public User newUser( String username, String initialPassword, boolean requirePasswordChange ) throws IOException,
IllegalCredentialsException
{
assertAuthEnabled();
return realm.newUser( username, DEFAULT_GROUP, initialPassword, requirePasswordChange );
}
public User newUser( String username, String group, String initialPassword, boolean requirePasswordChange ) throws
IOException,
IllegalCredentialsException
{
assertAuthEnabled();
return realm.newUser( username, group, initialPassword, requirePasswordChange );
}
public AuthSubject login( String username, String password )
{
assertAuthEnabled();
Subject subject = new Subject.Builder(securityManager).buildSubject();
UsernamePasswordToken token = new UsernamePasswordToken( username, password );
AuthenticationResult result = AuthenticationResult.SUCCESS;
if ( !authStrategy.isAuthenticationPermitted( username ) )
{
result = AuthenticationResult.TOO_MANY_ATTEMPTS;
}
else
{
try
{
subject.login( token );
}
catch ( ExpiredCredentialsException e )
{
result = AuthenticationResult.PASSWORD_CHANGE_REQUIRED;
}
catch ( AuthenticationException e )
{
result = AuthenticationResult.FAILURE;
}
authStrategy.updateWithAuthenticationResult( result, username );
}
return new ShiroAuthSubject(this, subject, result);
}
@Override
public void setPassword( AuthSubject authSubject, String username, String password ) throws IOException,
IllegalCredentialsException
{
ShiroAuthSubject shiroAuthSubject = ShiroAuthSubject.castOrFail( authSubject );
if ( !shiroAuthSubject.doesUsernameMatch( username ) )
{
throw new AuthorizationViolationException( "Invalid attempt to change the password for user " + username );
}
passwordPolicy.validatePassword( authSubject, password,
pass -> realm.credentialsMatchesPassword( username, pass ) );
setUserPassword( username, password );
}
}