com.groupbyinc.common.apache.commons.net.smtp.SMTPCommand Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.apache.commons.net.smtp;
/**
* SMTPCommand stores a set of constants for SMTP command codes. To interpret
* the meaning of the codes, familiarity with RFC 821 is assumed.
* The mnemonic constant names are transcriptions from the code descriptions
* of RFC 821. For those who think in terms of the actual SMTP commands,
* a set of constants such as {@link #HELO HELO } are provided
* where the constant name is the same as the SMTP command.
*/
public final class SMTPCommand
{
public static final int HELO = 0;
public static final int MAIL = 1;
public static final int RCPT = 2;
public static final int DATA = 3;
public static final int SEND = 4;
public static final int SOML = 5;
public static final int SAML = 6;
public static final int RSET = 7;
public static final int VRFY = 8;
public static final int EXPN = 9;
public static final int HELP = 10;
public static final int NOOP = 11;
public static final int TURN = 12;
public static final int QUIT = 13;
/**
* The authorization command
* @since 3.0
*/
public static final int AUTH = 14 ;
/**
* The extended hello command
* @since 3.0
*/
public static final int EHLO = 15 ;
private static final int _NEXT_ = EHLO + 1; // update as necessary when adding new entries
public static final int HELLO = HELO;
public static final int LOGIN = HELO;
public static final int MAIL_FROM = MAIL;
public static final int RECIPIENT = RCPT;
public static final int SEND_MESSAGE_DATA = DATA;
public static final int SEND_FROM = SEND;
public static final int SEND_OR_MAIL_FROM = SOML;
public static final int SEND_AND_MAIL_FROM = SAML;
public static final int RESET = RSET;
public static final int VERIFY = VRFY;
public static final int EXPAND = EXPN;
// public static final int HELP = HELP;
// public static final int NOOP = NOOP;
// public static final int TURN = TURN;
// public static final int QUIT = QUIT;
public static final int LOGOUT = QUIT;
// Cannot be instantiated
private SMTPCommand()
{}
private static final String[] _commands = {
"HELO", "MAIL FROM:", "RCPT TO:", "DATA", "SEND FROM:", "SOML FROM:",
"SAML FROM:", "RSET", "VRFY", "EXPN", "HELP", "NOOP", "TURN", "QUIT",
"AUTH", "EHLO"
};
static {
if (_commands.length != _NEXT_) {
throw new RuntimeException("Error in array definition");
}
}
/***
* Retrieve the SMTP protocol command string corresponding to a specified
* command code.
*
* @param command The command code.
* @return The SMTP protcol command string corresponding to a specified
* command code.
***/
public static final String getCommand(int command)
{
return _commands[command];
}
}