001/** 002 * 003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved. 004 * 005 * This library is free software; you can redistribute it and/or 006 * modify it under the terms of the GNU Lesser General Public 007 * License as published by the Free Software Foundation; either 008 * version 2.1 of the License, or (at your option) any later version. 009 * 010 * This library is distributed in the hope that it will be useful, 011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013 * Lesser General Public License for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public 016 * License along with this library. If not, see <http://www.gnu.org/licenses/>. 017 * 018 **/ 019package lucee.runtime.net.mail; 020 021import java.util.Properties; 022 023import javax.mail.Authenticator; 024import javax.mail.MessagingException; 025import javax.mail.Session; 026import javax.mail.Transport; 027 028import lucee.commons.lang.StringUtil; 029 030import org.apache.commons.mail.DefaultAuthenticator; 031 032/** 033 * SMTP Server verifier 034 */ 035public final class SMTPVerifier{ 036 037 /** 038 * verify mail server 039 * @param host 040 * @param username 041 * @param password 042 * @param port 043 * @return are the setting ok 044 * @throws SMTPException 045 */ 046 public static boolean verify(String host, String username,String password, int port) throws SMTPException { 047 try { 048 return _verify(host,username,password,port); 049 } 050 catch (MessagingException e) { 051 052 // check user 053 if(!StringUtil.isEmpty(username)) { 054 try { 055 _verify(host,null,null,port); 056 throw new SMTPExceptionImpl("can't connect to mail server, authentication settings are invalid"); 057 } catch (MessagingException e1) { 058 059 } 060 } 061 // check port 062 if(port>0 && port!=25) { 063 try { 064 _verify(host,null,null,25); 065 throw new SMTPExceptionImpl("can't connect to mail server, port definition is invalid"); 066 } 067 catch (MessagingException e1) {} 068 } 069 070 throw new SMTPExceptionImpl("can't connect to mail server"); 071 } 072 } 073 074 private static boolean _verify(String host, String username,String password, int port) throws MessagingException { 075 boolean hasAuth=!StringUtil.isEmpty(username); 076 077 Properties props=new Properties(); 078 props.put("mail.smtp.host", host ); 079 if(hasAuth)props.put("mail.smtp.auth", "true" ); 080 if(hasAuth)props.put("mail.smtp.user", username ); 081 if(hasAuth)props.put("mail.transport.connect-timeout", "30" ); 082 if(port>0)props.put("mail.smtp.port", String.valueOf(port) ); 083 084 085 Authenticator auth=null; 086 if(hasAuth)auth=new DefaultAuthenticator(username,password); 087 Session session = Session.getInstance( props, auth); 088 089 Transport transport = session.getTransport("smtp"); 090 if(hasAuth)transport.connect( host , username ,password ); 091 else transport.connect( ); 092 boolean rtn=transport.isConnected(); 093 transport.close(); 094 095 return rtn; 096 } 097}