/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed 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 io.undertow.attribute;
import io.undertow.security.api.SecurityContext;
import io.undertow.server.HttpServerExchange;
/**
* The remote user
*
* @author Stuart Douglas
*/
public class RemoteUserAttribute implements ExchangeAttribute {
public static final String REMOTE_USER_SHORT = "%u";
public static final String REMOTE_USER = "%{REMOTE_USER}";
public static final ExchangeAttribute INSTANCE = new RemoteUserAttribute();
private RemoteUserAttribute() {
}
@Override
public String readAttribute(final HttpServerExchange exchange) {
SecurityContext sc = exchange.getSecurityContext();
if (sc == null || !sc.isAuthenticated()) {
return null;
}
return sc.getAuthenticatedAccount().getPrincipal().getName();
}
@Override
public void writeAttribute(final HttpServerExchange exchange, final String newValue) throws ReadOnlyAttributeException {
throw new ReadOnlyAttributeException("Remote user", newValue);
}
public static final class Builder implements ExchangeAttributeBuilder {
@Override
public String name() {
return "Remote user";
}
@Override
public ExchangeAttribute build(final String token) {
if (token.equals(REMOTE_USER) || token.equals(REMOTE_USER_SHORT)) {
return RemoteUserAttribute.INSTANCE;
}
return null;
}
@Override
public int priority() {
return 0;
}
}
}