com.muk.services.processor.BearerTokenAuthPrincipalProcessor.java Source code

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Here is the source code for com.muk.services.processor.BearerTokenAuthPrincipalProcessor.java

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/*******************************************************************************
 * Copyright (C)  2018  mizuuenikaze inc
 *
 *     This program 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 com.muk.services.processor;

import javax.security.auth.Subject;

import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpHeaders;

import com.muk.services.exchange.RestConstants;
import com.muk.services.security.BearerAuthenticationToken;

/**
 * Extracts bearer token from Auth header for camel
 */
public class BearerTokenAuthPrincipalProcessor implements Processor {

    @Override
    public void process(Exchange exchange) throws Exception {

        String bearerToken = RestConstants.Rest.anonymousToken;

        if (exchange.getIn().getHeaders().containsKey(HttpHeaders.AUTHORIZATION)) {
            bearerToken = StringUtils
                    .substringAfter(exchange.getIn().getHeader(HttpHeaders.AUTHORIZATION, String.class), "Bearer ");
        }

        // create an Authentication object
        // build a new bearer token type
        final BearerAuthenticationToken authToken = new BearerAuthenticationToken(bearerToken);

        // wrap it in a Subject
        final Subject subject = new Subject();
        subject.getPrincipals().add(authToken);

        // place the Subject in the In message
        exchange.getIn().setHeader(Exchange.AUTHENTICATION, subject);
    }
}