grails.plugin.springsecurity.web.authentication.preauth.x509.ClosureX509PrincipalExtractor.java Source code

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Here is the source code for grails.plugin.springsecurity.web.authentication.preauth.x509.ClosureX509PrincipalExtractor.java

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/* Copyright 2013-2015 SpringSource.
 *
 * 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 grails.plugin.springsecurity.web.authentication.preauth.x509;

import groovy.lang.Closure;

import java.security.cert.X509Certificate;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.MessageSource;
import org.springframework.context.support.MessageSourceAccessor;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.core.SpringSecurityMessageSource;
import org.springframework.security.web.authentication.preauth.x509.X509PrincipalExtractor;

/**
 * @author <a href='mailto:burt@burtbeckwith.com'>Burt Beckwith</a>
 */
public class ClosureX509PrincipalExtractor implements X509PrincipalExtractor {

    protected MessageSourceAccessor messages = SpringSecurityMessageSource.getAccessor();
    protected Logger log = LoggerFactory.getLogger(getClass());

    protected Closure<?> closure;

    public Object extractPrincipal(X509Certificate clientCert) {
        String subjectDN = clientCert.getSubjectDN().getName();

        log.debug("Subject DN is '{}'", subjectDN);

        Object username = closure.call(subjectDN);

        if (username == null) {
            throw new BadCredentialsException(messages.getMessage("SubjectDnX509PrincipalExtractor.noMatching",
                    new Object[] { subjectDN }, "No matching pattern was found in subject DN: {}"));
        }

        log.debug("Extracted Principal name is '{}'", username);

        return username;
    }

    /**
     * Dependency injection for the closure to use to extract the username.
     * @param closure the closure
     */
    public void setClosure(Closure<?> closure) {
        this.closure = closure;
    }

    /**
     * Dependency injection for the message source.
     * @param messageSource the message source
     */
    public void setMessageSource(MessageSource messageSource) {
        messages = new MessageSourceAccessor(messageSource);
    }
}