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AuthProcedures.java
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AuthProcedures.java
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/*
* Copyright (c) 2002-2017 "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.util.ArrayList;
import java.util.List;
import java.util.Set;
import java.util.stream.Stream;
import org.neo4j.graphdb.security.AuthorizationViolationException;
import org.neo4j.kernel.api.exceptions.InvalidArgumentsException;
import org.neo4j.kernel.api.security.AuthSubject;
import org.neo4j.kernel.api.security.SecurityContext;
import org.neo4j.kernel.api.security.UserManager;
import org.neo4j.kernel.impl.security.User;
import org.neo4j.procedure.Context;
import org.neo4j.procedure.Description;
import org.neo4j.procedure.Name;
import org.neo4j.procedure.Procedure;
import static java.util.Collections.emptyList;
import static org.neo4j.procedure.Mode.DBMS;
@SuppressWarnings( {"unused", "WeakerAccess"} )
public class AuthProcedures
{
@Context
public SecurityContext securityContext;
@Context
public UserManager userManager;
@Description( "Create a new user." )
@Procedure( name = "dbms.security.createUser", mode = DBMS )
public void createUser(
@Name( "username" ) String username,
@Name( "password" ) String password,
@Name( value = "requirePasswordChange", defaultValue = "true" ) boolean requirePasswordChange )
throws InvalidArgumentsException, IOException
{
securityContext.assertCredentialsNotExpired();
userManager.newUser( username, password, requirePasswordChange );
}
@Description( "Delete the specified user." )
@Procedure( name = "dbms.security.deleteUser", mode = DBMS )
public void deleteUser( @Name( "username" ) String username ) throws InvalidArgumentsException, IOException
{
securityContext.assertCredentialsNotExpired();
if ( securityContext.subject().hasUsername( username ) )
{
throw new InvalidArgumentsException( "Deleting yourself (user '" + username + "') is not allowed." );
}
userManager.deleteUser( username );
}
@Deprecated
@Description( "Change the current user's password. Deprecated by dbms.security.changePassword." )
@Procedure( name = "dbms.changePassword", mode = DBMS, deprecatedBy = "dbms.security.changePassword" )
public void changePasswordDeprecated( @Name( "password" ) String password ) throws InvalidArgumentsException, IOException
{
changePassword( password );
}
@Description( "Change the current user's password." )
@Procedure( name = "dbms.security.changePassword", mode = DBMS )
public void changePassword( @Name( "password" ) String password ) throws InvalidArgumentsException, IOException
{
if ( securityContext.subject() == AuthSubject.ANONYMOUS )
{
throw new AuthorizationViolationException( "Anonymous cannot change password" );
}
userManager.setUserPassword( securityContext.subject().username(), password, false );
securityContext.subject().setPasswordChangeNoLongerRequired();
}
@Description( "Show the current user." )
@Procedure( name = "dbms.showCurrentUser", mode = DBMS )
public Stream<UserResult> showCurrentUser() throws InvalidArgumentsException, IOException
{
return Stream.of( userResultForName( securityContext.subject().username() ) );
}
@Deprecated
@Description( "Show the current user. Deprecated by dbms.showCurrentUser." )
@Procedure( name = "dbms.security.showCurrentUser", mode = DBMS, deprecatedBy = "dbms.showCurrentUser" )
public Stream<UserResult> showCurrentUserDeprecated() throws InvalidArgumentsException, IOException
{
return showCurrentUser();
}
@Description( "List all local users." )
@Procedure( name = "dbms.security.listUsers", mode = DBMS )
public Stream<UserResult> listUsers() throws InvalidArgumentsException, IOException
{
securityContext.assertCredentialsNotExpired();
Set<String> usernames = userManager.getAllUsernames();
if ( usernames.isEmpty() )
{
return showCurrentUser();
}
else
{
return usernames.stream().map( this::userResultForName );
}
}
private UserResult userResultForName( String username )
{
User user = userManager.silentlyGetUser( username );
Iterable<String> flags = user == null ? emptyList() : user.getFlags();
return new UserResult( username, flags );
}
public static class UserResult
{
public final String username;
public final List<String> flags;
UserResult( String username, Iterable<String> flags )
{
this.username = username;
this.flags = new ArrayList<>();
for ( String f : flags )
{
this.flags.add( f );
}
}
}
}