de.knurt.fam.template.controller.letter.EMailLetterAdapter.java Source code

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Here is the source code for de.knurt.fam.template.controller.letter.EMailLetterAdapter.java

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/*
 * Copyright 2009-2012 by KNURT Systeme (http://www.knurt.de)
 *
 * Licensed under the Creative Commons License Attribution-NonCommercial-ShareAlike 3.0 Unported;
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://creativecommons.org/licenses/by-nc-sa/3.0/
 *
 * 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 de.knurt.fam.template.controller.letter;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.mail.Email;
import org.apache.commons.mail.EmailAttachment;
import org.apache.commons.mail.EmailException;
import org.apache.commons.mail.MultiPartEmail;
import org.apache.commons.validator.EmailValidator;

import de.knurt.fam.core.aspects.logging.FamLog;
import de.knurt.fam.core.util.mail.UserMailSender;
import de.knurt.fam.template.model.TemplateResource;

/**
 * a simple util for sending pdf emails
 * 
 * @author Daniel Oltmanns <info@knurt.de>
 * @since 1.4.0 (06/21/2011)
 * 
 */

public class EMailLetterAdapter {

    private String from, to, subject, msg;

    protected String getFrom() {
        return from;
    }

    protected String getTo() {
        return to;
    }

    protected String getSubject() {
        return subject;
    }

    protected String getMsg() {
        return msg;
    }

    public EMailLetterAdapter(String from, String to, String subject, String msg) {
        this.from = from;
        this.to = to;
        this.subject = subject;
        this.msg = msg;

        if (this.from == null || !EmailValidator.getInstance().isValid(this.from)) {
            this.from = UserMailSender.getInstance().getFromMail();
        }
        if (this.subject == null || this.subject.trim().isEmpty()) {
            this.subject = "[FAM] no subject"; // INTLANG
        }
        if (this.msg == null || this.msg.trim().isEmpty()) {
            this.msg = "[FAM] no message"; // INTLANG
        }

    }

    protected EMailLetterAdapter(TemplateResource tr) {
        // set from
        from = tr.getRequest().getParameter("email_from");
        if (from == null || !EmailValidator.getInstance().isValid(from)) {
            from = UserMailSender.getInstance().getFromMail();
        }

        // to
        to = tr.getRequest().getParameter("email_recipient");

        // subject
        subject = tr.getRequest().getParameter("email_subject");
        if (subject == null || subject.trim().isEmpty()) {
            subject = "[FAM] no subject"; // INTLANG
        }

        // message
        msg = tr.getRequest().getParameter("email_message");
        if (msg == null || msg.trim().isEmpty()) {
            msg = "[FAM] no message"; // INTLANG
        }
    }

    protected boolean isValid() {
        return this.to != null && EmailValidator.getInstance().isValid(to);
    }

    /**
     * send the email and return an errormessage. if errormessage is empty,
     * sending succeeded.
     * 
     * @param post
     *            getting the input stream from
     * @param customid
     *            for the to send via email
     * @return an errormessage (may empty on success)
     */
    public String send(PostMethod post, String customid) {
        String errormessage = "";
        if (this.isValid()) {

            File file = null;
            try {
                file = this.getTmpFile(customid);

            } catch (IOException e) {
                FamLog.exception(e, 201106131728l);
                errormessage += "Fail: Create tmp file [201106131729].";
            }

            try {
                InputStream is = post.getResponseBodyAsStream();

                FileOutputStream fos = new FileOutputStream(file);
                BufferedOutputStream bos = new BufferedOutputStream(fos);

                int bite = 0;
                while ((bite = is.read()) >= 0) {
                    bos.write(bite);
                }
                bos.flush();
                bos.close();
            } catch (IOException e) {
                errormessage += "Fail: Write pdf to tmp file [201106141055].";
                FamLog.exception(e, 201106131733l);
            }

            Email mail = this.getEMail(file, this);
            if (mail == null) {
                errormessage += "Fail: Create e-mail object. Please check log files [201106141058].";
            }
            boolean succ = UserMailSender.sendWithoutUserBox(mail);
            if (!succ) {
                errormessage += "Fail: Send email through configured server. Please check log files [201106131756].";
            }

        } else {
            if (this.getTo() == null) {
                errormessage += "Fail: Find an recipient - form email_recipient sent? [201106131757]";
            } else {
                errormessage += "Invalid email address. Recheck email recipient.";
            }
        }
        return errormessage;
    }

    private DateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");

    private File getTmpFile(String customid) throws IOException {
        String fullpath = System.getProperty("java.io.tmpdir") + System.getProperty("file.separator")
                + this.df.format(new Date()) + "-" + customid + ".pdf";
        File result = new File(fullpath);
        result.createNewFile();
        result.setWritable(true);
        return result;
    }

    private Email getEMail(File file, EMailLetterAdapter mailIn) {
        // attachment
        EmailAttachment attachment = new EmailAttachment();
        attachment.setPath(file.getAbsolutePath());
        attachment.setDisposition(EmailAttachment.ATTACHMENT);
        attachment.setDescription("Attachment"); // INTLANG
        attachment.setName(file.getName()); // INTLANG

        // email message
        MultiPartEmail email = new MultiPartEmail();
        try {
            // basics
            email.addTo(mailIn.getTo());
            email.setFrom(mailIn.getFrom());
            email.setSubject(mailIn.getSubject());
            email.setMsg(mailIn.getMsg());

            // add attachment
            email.attach(attachment);
        } catch (EmailException e) {
            FamLog.exception(e, 201106131739l);
            email = null;
        }
        return email;
    }
}