AuthenticationCallHandler.java

/*
 * RESTHeart - the Web API for MongoDB
 * Copyright (C) SoftInstigate Srl
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.restheart.security.handlers;

import io.undertow.security.api.SecurityContext;
import io.undertow.server.HttpHandler;
import io.undertow.server.HttpServerExchange;
import org.restheart.handlers.PipedHttpHandler;
import org.restheart.handlers.RequestContext;

/**
 * This is the PipedHttpHandler version of io.undertow.security.handlers.AuthenticationCallHandler
 * that is the final {@link HttpHandler} in the security chain, it's purpose is to act as a barrier at the end of the chain to
 * ensure authenticate is called after the mechanisms have been associated with the context and the constraint checked.
 *
 * @author Andrea Di Cesare {@literal <andrea@softinstigate.com>}
 */
public class AuthenticationCallHandler extends PipedHttpHandler {

    public AuthenticationCallHandler(final PipedHttpHandler next) {
        super(next);
    }
    
    /**
     * Only allow the request through if successfully authenticated or if authentication is not required.
     *
     * @throws java.lang.Exception
     * @see io.undertow.server.HttpHandler#handleRequest(io.undertow.server.HttpServerExchange)
     */
    @Override
    public void handleRequest(HttpServerExchange exchange, RequestContext context) throws Exception {
        if(exchange.isInIoThread()) {
            exchange.dispatch(this);
            return;
        }
        SecurityContext rcontext = exchange.getSecurityContext();
        if (rcontext.authenticate()) {
            if(!exchange.isComplete()) {
               next(exchange, context);
            }
        } else {
            exchange.endExchange();
        }
    }

}