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SecurityContext.java
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SecurityContext.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.kernel.api.security;
/** Controls the capabilities of a KernelTransaction. */
public interface SecurityContext
{
AccessMode mode();
AuthSubject subject();
SecurityContext freeze();
SecurityContext withMode( AccessMode mode );
default String description()
{
return String.format( "user '%s' with %s", subject().username(), mode().name() );
}
default String defaultString( String name )
{
return String.format( "%s{ username=%s, accessMode=%s }", name, subject().username(), mode() );
}
/** Allows all operations. */
SecurityContext AUTH_DISABLED = new AuthDisabled(AccessMode.Static.FULL);
final class AuthDisabled implements SecurityContext
{
private final AccessMode mode;
private AuthDisabled( AccessMode mode )
{
this.mode = mode;
}
@Override
public AccessMode mode()
{
return mode;
}
@Override
public AuthSubject subject()
{
return AuthSubject.AUTH_DISABLED;
}
@Override
public String toString()
{
return defaultString( "auth-disabled" );
}
@Override
public String description()
{
return "AUTH_DISABLED with " + mode.name();
}
@Override
public SecurityContext freeze()
{
return this;
}
@Override
public SecurityContext withMode( AccessMode mode )
{
return new AuthDisabled( mode );
}
};
final class Frozen implements SecurityContext
{
private final AuthSubject subject;
private final AccessMode mode;
public Frozen( AuthSubject subject, AccessMode mode )
{
this.subject = subject;
this.mode = mode;
}
@Override
public AccessMode mode()
{
return mode;
}
@Override
public AuthSubject subject()
{
return subject;
}
@Override
public SecurityContext freeze()
{
return this;
}
@Override
public SecurityContext withMode( AccessMode mode )
{
return new Frozen( subject, mode );
}
}
}