mitm.application.djigzo.james.matchers.IsRecipient.java Source code

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Here is the source code for mitm.application.djigzo.james.matchers.IsRecipient.java

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/*
 * Copyright (c) 2012, Martijn Brinkers, Djigzo.
 * 
 * This file is part of Djigzo email encryption.
 *
 * Djigzo is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License 
 * version 3, 19 November 2007 as published by the Free Software 
 * Foundation.
 *
 * Djigzo 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 Djigzo. If not, see <http://www.gnu.org/licenses/>
 *
 * Additional permission under GNU AGPL version 3 section 7
 * 
 * If you modify this Program, or any covered work, by linking or 
 * combining it with aspectjrt.jar, aspectjweaver.jar, tyrex-1.0.3.jar, 
 * freemarker.jar, dom4j.jar, mx4j-jmx.jar, mx4j-tools.jar, 
 * spice-classman-1.0.jar, spice-loggerstore-0.5.jar, spice-salt-0.8.jar, 
 * spice-xmlpolicy-1.0.jar, saaj-api-1.3.jar, saaj-impl-1.3.jar, 
 * wsdl4j-1.6.1.jar (or modified versions of these libraries), 
 * containing parts covered by the terms of Eclipse Public License, 
 * tyrex license, freemarker license, dom4j license, mx4j license,
 * Spice Software License, Common Development and Distribution License
 * (CDDL), Common Public License (CPL) the licensors of this Program grant 
 * you additional permission to convey the resulting work.
 */
package mitm.application.djigzo.james.matchers;

import java.util.Collection;
import java.util.LinkedList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.mail.MessagingException;

import mitm.application.djigzo.james.MailAddressUtils;

import org.apache.commons.lang.StringUtils;
import org.apache.mailet.Mail;
import org.apache.mailet.MailAddress;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Matcher that matches recipients against a regular expression.
 * 
 * This matcher is named IsRecipient and not RecipientIs because the James defaults matchers already contain a
 * matcher named RecipientIs.
 * 
 * @author Martijn Brinkers
 *
 */
public class IsRecipient extends AbstractDjigzoMatcher {
    private final static Logger logger = LoggerFactory.getLogger(IsRecipient.class);

    /*
     * The pattern against which the email address is matched
     */
    private Pattern pattern;

    @Override
    protected Logger getLogger() {
        return logger;
    }

    @Override
    public void init() {
        getLogger().info("Initializing matcher: " + getMatcherName());

        pattern = Pattern.compile(StringUtils.defaultString(StringUtils.trimToNull(getCondition())));
    }

    @Override
    public Collection<?> match(Mail mail) throws MessagingException {
        Collection<MailAddress> result = new LinkedList<MailAddress>();

        Collection<MailAddress> addresses = MailAddressUtils.getRecipients(mail);

        if (addresses != null) {
            for (MailAddress address : addresses) {
                Matcher matcher = pattern.matcher(address != null ? address.toString() : "");

                if (matcher.matches()) {
                    result.add(address);
                }
            }
        }

        return result;
    }
}