/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.isis.viewer.restfulobjects.server.authentication;
import java.util.Collections;
import java.util.List;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import com.google.common.base.Splitter;
import com.google.common.base.Strings;
import com.google.common.collect.Lists;
import org.apache.isis.core.commons.authentication.AuthenticationSession;
import org.apache.isis.core.runtime.authentication.standard.SimpleSession;
import org.apache.isis.core.webapp.auth.AuthenticationSessionStrategyAbstract;
/**
* Implements a home-grown protocol, whereby the user id and roles are passed
* using custom headers.
*
* <p>
* Does not bind the {@link AuthenticationSession} onto the {@link HttpSession}.
*/
public class AuthenticationSessionStrategyHeader extends AuthenticationSessionStrategyAbstract {
@Override
public AuthenticationSession lookupValid(final ServletRequest servletRequest, final ServletResponse servletResponse) {
final HttpServletRequest httpServletRequest = (HttpServletRequest) servletRequest;
final String user = httpServletRequest.getHeader("isis.user");
final List<String> roles = rolesFrom(httpServletRequest);
if (Strings.isNullOrEmpty(user)) {
return null;
}
return new SimpleSession(user, roles);
}
protected List<String> rolesFrom(final HttpServletRequest httpServletRequest) {
final String rolesStr = httpServletRequest.getHeader("isis.roles");
if (rolesStr == null) {
return Collections.emptyList();
}
return Lists.newArrayList(Splitter.on(",").split(rolesStr));
}
}