/**
* Simple Email Servlet. 
* Internet Programming 2 - Course
* @author Martin Carlsson
*/
import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import com.oreilly.servlet.ParameterParser;
import com.oreilly.servlet.MailMessage;
import com.oreilly.servlet.ServletUtils;


public class EmailServlet extends HttpServlet {
    
    private static final String mailserver = "smtprelay1.telia.com";
    private static final String correctPassword = "xxx"; // I'm not telling:-)
    private String from, to, password, date = new Date().toString();
    private String cc, bcc, subject, message; 
    private String mimeVersion = "1.0", contentType = "text/plain; charset=ISO-8859-1", contentTransferEncoding = "8bit"; 
    private String warning = "Warning! This mail was from a Web form. Sender could be invalid!";
        
    public void doPost(HttpServletRequest req, HttpServletResponse res) throws IOException, ServletException {
        
        res.setContentType("text/plain");
        PrintWriter out = res.getWriter();
        
        Enumeration e = req.getParameterNames();
        while (e.hasMoreElements()) {
            String key = (String)e.nextElement();
            if(key.equals("from")) {
                from = req.getParameter(key);
            }
            if(key.equals("to")) {
                to = req.getParameter(key);
            }
            if(key.equals("cc")) {
                cc = req.getParameter(key);
            }
            if(key.equals("bcc")) {
                bcc = req.getParameter(key);
            }
            if(key.equals("subject")) {
                subject = req.getParameter(key);   
            }
            if(key.equals("message")) {
                message = req.getParameter(key);   
            }             
            if(key.equals("password")) {
                password = req.getParameter(key);   
            }  
        } 
        
        if(password.equals(correctPassword)) {
           try {    
                MailMessage msg = new MailMessage(mailserver);
                msg.setHeader("Mime-Version", mimeVersion);
                msg.setHeader("Content-Type", contentType);
                msg.setHeader("Content-Transfer-Encoding:",contentTransferEncoding);
                msg.from(from);
                msg.to(to);
                if(cc !=null && cc.length() != 0) {
                    msg.cc(cc);
                }
                if(bcc !=null  && bcc.length() != 0) {
                    msg.bcc(bcc);
                }
                msg.setSubject(subject);
                msg.setHeader("Date", date);
                PrintStream body = new PrintStream(msg.getPrintStream());
                body.println("\n\n" + message + "\n\n" + warning);
                msg.sendAndClose();
                out.println("Message sent!\n\n");
                sendMailCopy(out);
            }
            catch(IOException iOe) {
                out.println("There was a problem sending the email!\n\n" + iOe);
            }
        }
        else {
            out.println("Bad password, go back and try again!");
        }
    }
    
    public void sendMailCopy(PrintWriter out) {
        
        out.println("MIME-Version: " + mimeVersion);
        out.println("Content-Type: " + contentType);
        out.println("Content-Transfer-Encoding: " + contentTransferEncoding);
        out.println("From: " + from);
        out.println("To: " + to);
        out.println("Cc: " +cc);
        out.println("Bcc: " + bcc);
        out.println("Subject: " + subject);
        out.println("Date : " + date);
        out.println("\n\n" + message + "\n\n" + warning);
        
    }
} //End class EmailServlet