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BasicAuthManager.java
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BasicAuthManager.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 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.server.security.auth;
import java.io.IOException;
import java.time.Clock;
import java.util.Map;
import java.util.Set;
import org.neo4j.graphdb.security.AuthorizationViolationException;
import org.neo4j.kernel.api.exceptions.InvalidArgumentsException;
import org.neo4j.kernel.api.security.AuthManager;
import org.neo4j.kernel.api.security.AuthSubject;
import org.neo4j.kernel.api.security.AuthToken;
import org.neo4j.kernel.api.security.AuthenticationResult;
import org.neo4j.kernel.api.security.exception.InvalidAuthTokenException;
import org.neo4j.server.security.auth.exception.ConcurrentModificationException;
import static org.neo4j.server.security.auth.UserManager.INITIAL_USER_NAME;
/**
* Manages server authentication and authorization.
* <p>
* Through the BasicAuthManager you can create, update and delete userRepository, and authenticate using credentials.
* <p>>
* NOTE: AuthManager will manage the lifecycle of the given UserRepository,
* so the given UserRepository should not be added to another LifeSupport.
* </p>
*/
public class BasicAuthManager implements AuthManager, UserManager, UserManagerSupplier
{
protected final AuthenticationStrategy authStrategy;
protected final UserRepository userRepository;
protected final PasswordPolicy passwordPolicy;
private final UserRepository initialUserRepository;
public BasicAuthManager( UserRepository userRepository, PasswordPolicy passwordPolicy,
AuthenticationStrategy authStrategy, UserRepository initialUserRepository )
{
this.userRepository = userRepository;
this.passwordPolicy = passwordPolicy;
this.authStrategy = authStrategy;
this.initialUserRepository = initialUserRepository;
}
public BasicAuthManager( UserRepository userRepository, PasswordPolicy passwordPolicy, Clock clock,
UserRepository initialUserRepository )
{
this( userRepository, passwordPolicy, new RateLimitedAuthenticationStrategy( clock, 3 ), initialUserRepository );
}
@Override
public void init() throws Throwable
{
userRepository.init();
initialUserRepository.init();
}
@Override
public void start() throws Throwable
{
userRepository.start();
initialUserRepository.start();
if ( userRepository.numberOfUsers() == 0 )
{
User neo4j = newUser( INITIAL_USER_NAME, "neo4j", true );
if ( initialUserRepository.numberOfUsers() > 0 )
{
User user = initialUserRepository.getUserByName( INITIAL_USER_NAME );
if ( user != null )
{
userRepository.update( neo4j, user );
}
}
}
}
@Override
public void stop() throws Throwable
{
userRepository.stop();
initialUserRepository.stop();
}
@Override
public void shutdown() throws Throwable
{
userRepository.shutdown();
initialUserRepository.shutdown();
}
@Override
public BasicAuthSubject login( Map<String,Object> authToken ) throws InvalidAuthTokenException
{
String scheme = AuthToken.safeCast( AuthToken.SCHEME_KEY, authToken );
if ( !scheme.equals( AuthToken.BASIC_SCHEME ) )
{
throw new InvalidAuthTokenException( "Unsupported authentication scheme '" + scheme + "'." );
}
String username = AuthToken.safeCast( AuthToken.PRINCIPAL, authToken );
String password = AuthToken.safeCast( AuthToken.CREDENTIALS, authToken );
User user = userRepository.getUserByName( username );
AuthenticationResult result = AuthenticationResult.FAILURE;
if ( user != null )
{
result = authStrategy.authenticate( user, password );
if ( result == AuthenticationResult.SUCCESS && user.passwordChangeRequired() )
{
result = AuthenticationResult.PASSWORD_CHANGE_REQUIRED;
}
}
return new BasicAuthSubject( this, user, result );
}
@Override
public User newUser( String username, String initialPassword, boolean requirePasswordChange )
throws IOException, InvalidArgumentsException
{
userRepository.assertValidUsername( username );
passwordPolicy.validatePassword( initialPassword );
User user = new User.Builder()
.withName( username )
.withCredentials( Credential.forPassword( initialPassword ) )
.withRequiredPasswordChange( requirePasswordChange )
.build();
userRepository.create( user );
return user;
}
@Override
public boolean deleteUser( String username ) throws IOException, InvalidArgumentsException
{
User user = getUser( username );
return user != null && userRepository.delete( user );
}
@Override
public User getUser( String username ) throws InvalidArgumentsException
{
User user = userRepository.getUserByName( username );
if ( user == null )
{
throw new InvalidArgumentsException( "User '" + username + "' does not exist." );
}
return user;
}
@Override
public User silentlyGetUser( String username )
{
return userRepository.getUserByName( username );
}
public void setPassword( AuthSubject authSubject, String username, String password, boolean requirePasswordChange )
throws IOException, InvalidArgumentsException
{
BasicAuthSubject basicAuthSubject = BasicAuthSubject.castOrFail( authSubject );
if ( !basicAuthSubject.hasUsername( username ) )
{
throw new AuthorizationViolationException( "Invalid attempt to change the password for user " + username );
}
setUserPassword( username, password, requirePasswordChange );
}
@Override
public void setUserPassword( String username, String password, boolean requirePasswordChange )
throws IOException, InvalidArgumentsException
{
User existingUser = getUser( username );
passwordPolicy.validatePassword( password );
if ( existingUser.credentials().matchesPassword( password ) )
{
throw new InvalidArgumentsException( "Old password and new password cannot be the same." );
}
try
{
User updatedUser = existingUser.augment()
.withCredentials( Credential.forPassword( password ) )
.withRequiredPasswordChange( requirePasswordChange )
.build();
userRepository.update( existingUser, updatedUser );
} catch ( ConcurrentModificationException e )
{
// try again
setUserPassword( username, password, requirePasswordChange );
}
}
@Override
public Set<String> getAllUsernames()
{
return userRepository.getAllUsernames();
}
@Override
public UserManager getUserManager( AuthSubject authSubject )
{
return this;
}
@Override
public UserManager getUserManager()
{
return this;
}
}