org.jasig.schedassist.impl.reminder.DefaultEmailAddressValidatorImpl.java Source code

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Here is the source code for org.jasig.schedassist.impl.reminder.DefaultEmailAddressValidatorImpl.java

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/**
 * Licensed to Jasig under one or more contributor license
 * agreements. See the NOTICE file distributed with this work
 * for additional information regarding copyright ownership.
 * Jasig 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.jasig.schedassist.impl.reminder;

import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;

import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jasig.schedassist.model.ICalendarAccount;

/**
 * Default {@link EmailAddressValidator} implementation.
 * Performs basic syntax validation, and stores a configurable set of restricted domains.
 * If the address' domain part 
 * 
 * @author Nicholas Blair
 */
public class DefaultEmailAddressValidatorImpl implements EmailAddressValidator {

    private Set<String> restrictedDomains = Collections.synchronizedSet(new HashSet<String>());
    private Log log = LogFactory.getLog(this.getClass());

    /**
     * 
     * @param propertyValue
     */
    public void setRestrictedDomains(String propertyValue) {
        String[] domains = org.springframework.util.StringUtils.commaDelimitedListToStringArray(propertyValue);
        restrictedDomains.addAll(Arrays.asList(domains));
    }

    /* (non-Javadoc)
     * @see org.jasig.schedassist.impl.reminder.EmailAddressValidator#canSendToEmailAddress(java.lang.String)
     */
    @Override
    public boolean canSendToEmailAddress(ICalendarAccount account) {
        if (account == null) {
            return false;
        }

        final String address = account.getEmailAddress();
        if (StringUtils.isBlank(address)) {
            return false;
        }

        try {
            InternetAddress emailAddr = new InternetAddress(address);
            emailAddr.validate();
            String[] parts = address.split("@");
            if (parts.length == 2) {
                if (!restrictedDomains.contains(parts[1])) {
                    return true;
                }
            }
        } catch (AddressException ex) {
            log.info("email address for " + account + " failed to valdidate", ex);
            return false;
        }

        return false;
    }

}