1 package org.apache.commons.net.smtp;
2
3 /* ====================================================================
4 * The Apache Software License, Version 1.1
5 *
6 * Copyright (c) 2001 The Apache Software Foundation. All rights
7 * reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
19 * distribution.
20 *
21 * 3. The end-user documentation included with the redistribution,
22 * if any, must include the following acknowledgment:
23 * "This product includes software developed by the
24 * Apache Software Foundation (http://www.apache.org/)."
25 * Alternately, this acknowledgment may appear in the software itself,
26 * if and wherever such third-party acknowledgments normally appear.
27 *
28 * 4. The names "Apache" and "Apache Software Foundation" and
29 * "Apache Commons" must not be used to endorse or promote products
30 * derived from this software without prior written permission. For
31 * written permission, please contact apache@apache.org.
32 *
33 * 5. Products derived from this software may not be called "Apache",
34 * nor may "Apache" appear in their name, without
35 * prior written permission of the Apache Software Foundation.
36 *
37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
40 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
48 * SUCH DAMAGE.
49 * ====================================================================
50 *
51 * This software consists of voluntary contributions made by many
52 * individuals on behalf of the Apache Software Foundation. For more
53 * information on the Apache Software Foundation, please see
54 * <http://www.apache.org/>.
55 */
56
57 /****
58 * SMTPCommand stores a set of constants for SMTP command codes. To interpret
59 * the meaning of the codes, familiarity with RFC 821 is assumed.
60 * The mnemonic constant names are transcriptions from the code descriptions
61 * of RFC 821. For those who think in terms of the actual SMTP commands,
62 * a set of constants such as <a href="#HELO"> HELO </a> are provided
63 * where the constant name is the same as the SMTP command.
64 * <p>
65 * <p>
66 * @author Daniel F. Savarese
67 ***/
68
69 public final class SMTPCommand
70 {
71
72
73 public static final int HELO = 0;
74 public static final int MAIL = 1;
75 public static final int RCPT = 2;
76 public static final int DATA = 3;
77 public static final int SEND = 4;
78 public static final int SOML = 5;
79 public static final int SAML = 6;
80 public static final int RSET = 7;
81 public static final int VRFY = 8;
82 public static final int EXPN = 9;
83 public static final int HELP = 10;
84 public static final int NOOP = 11;
85 public static final int TURN = 12;
86 public static final int QUIT = 13;
87
88 public static final int HELLO = HELO;
89 public static final int LOGIN = HELO;
90 public static final int MAIL_FROM = MAIL;
91 public static final int RECIPIENT = RCPT;
92 public static final int SEND_MESSAGE_DATA = DATA;
93 public static final int SEND_FROM = SEND;
94 public static final int SEND_OR_MAIL_FROM = SOML;
95 public static final int SEND_AND_MAIL_FROM = SAML;
96 public static final int RESET = RSET;
97 public static final int VERIFY = VRFY;
98 public static final int EXPAND = EXPN;
99 // public static final int HELP = HELP;
100 // public static final int NOOP = NOOP;
101 // public static final int TURN = TURN;
102 // public static final int QUIT = QUIT;
103 public static final int LOGOUT = QUIT;
104
105 // Cannot be instantiated
106 private SMTPCommand()
107 {}
108
109 static final String[] _commands = {
110 "HELO", "MAIL FROM:", "RCPT TO:", "DATA", "SEND FROM:", "SOML FROM:",
111 "SAML FROM:", "RSET", "VRFY", "EXPN", "HELP", "NOOP", "TURN", "QUIT"
112 };
113
114
115 /****
116 * Retrieve the SMTP protocol command string corresponding to a specified
117 * command code.
118 * <p>
119 * @param The command code.
120 * @return The SMTP protcol command string corresponding to a specified
121 * command code.
122 ***/
123 public static final String getCommand(int command)
124 {
125 return _commands[command];
126 }
127
128 }
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