001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018 package org.apache.commons.net.nntp;
019
020 /***
021 * NNTPReply stores a set of constants for NNTP reply codes. To interpret
022 * the meaning of the codes, familiarity with RFC 977 is assumed.
023 * The mnemonic constant names are transcriptions from the code descriptions
024 * of RFC 977. For those who think in terms of the actual reply code values,
025 * a set of CODE_NUM constants are provided where NUM is the numerical value
026 * of the code.
027 * <p>
028 * <p>
029 * @author Daniel F. Savarese
030 ***/
031
032 public final class NNTPReply
033 {
034
035 public static final int CODE_100 = 100;
036 public static final int CODE_199 = 199;
037 public static final int CODE_200 = 200;
038 public static final int CODE_201 = 201;
039 public static final int CODE_202 = 202;
040 public static final int CODE_205 = 205;
041 public static final int CODE_211 = 211;
042 public static final int CODE_215 = 215;
043 public static final int CODE_220 = 220;
044 public static final int CODE_221 = 221;
045 public static final int CODE_222 = 222;
046 public static final int CODE_223 = 223;
047 public static final int CODE_230 = 230;
048 public static final int CODE_231 = 231;
049 public static final int CODE_235 = 235;
050 public static final int CODE_240 = 240;
051 public static final int CODE_281 = 281;
052 public static final int CODE_335 = 335;
053 public static final int CODE_340 = 340;
054 public static final int CODE_381 = 381;
055 public static final int CODE_400 = 400;
056 public static final int CODE_408 = 408;
057 public static final int CODE_411 = 411;
058 public static final int CODE_412 = 412;
059 public static final int CODE_420 = 420;
060 public static final int CODE_421 = 421;
061 public static final int CODE_422 = 422;
062 public static final int CODE_423 = 423;
063 public static final int CODE_430 = 430;
064 public static final int CODE_435 = 435;
065 public static final int CODE_436 = 436;
066 public static final int CODE_437 = 437;
067 public static final int CODE_440 = 440;
068 public static final int CODE_441 = 441;
069 public static final int CODE_482 = 482;
070 public static final int CODE_500 = 500;
071 public static final int CODE_501 = 501;
072 public static final int CODE_502 = 502;
073 public static final int CODE_503 = 503;
074
075 public static final int HELP_TEXT_FOLLOWS = CODE_100;
076 public static final int DEBUG_OUTPUT = CODE_199;
077 public static final int SERVER_READY_POSTING_ALLOWED = CODE_200;
078 public static final int SERVER_READY_POSTING_NOT_ALLOWED = CODE_201;
079 public static final int SLAVE_STATUS_NOTED = CODE_202;
080 public static final int CLOSING_CONNECTION = CODE_205;
081 public static final int GROUP_SELECTED = CODE_211;
082 public static final int ARTICLE_RETRIEVED_HEAD_AND_BODY_FOLLOW = CODE_220;
083 public static final int ARTICLE_RETRIEVED_HEAD_FOLLOWS = CODE_221;
084 public static final int ARTICLE_RETRIEVED_BODY_FOLLOWS = CODE_222;
085 public static final int
086 ARTICLE_RETRIEVED_REQUEST_TEXT_SEPARATELY = CODE_223;
087 public static final int ARTICLE_LIST_BY_MESSAGE_ID_FOLLOWS = CODE_230;
088 public static final int NEW_NEWSGROUP_LIST_FOLLOWS = CODE_231;
089 public static final int ARTICLE_TRANSFERRED_OK = CODE_235;
090 public static final int ARTICLE_POSTED_OK = CODE_240;
091 public static final int AUTHENTICATION_ACCEPTED = CODE_281;
092 public static final int SEND_ARTICLE_TO_TRANSFER = CODE_335;
093 public static final int SEND_ARTICLE_TO_POST = CODE_340;
094 public static final int MORE_AUTH_INFO_REQUIRED = CODE_381;
095 public static final int SERVICE_DISCONTINUED = CODE_400;
096 public static final int NO_SUCH_NEWSGROUP = CODE_411;
097 public static final int AUTHENTICATION_REQUIRED = CODE_408;
098 public static final int NO_NEWSGROUP_SELECTED = CODE_412;
099 public static final int NO_CURRENT_ARTICLE_SELECTED = CODE_420;
100 public static final int NO_NEXT_ARTICLE = CODE_421;
101 public static final int NO_PREVIOUS_ARTICLE = CODE_422;
102 public static final int NO_SUCH_ARTICLE_NUMBER = CODE_423;
103 public static final int NO_SUCH_ARTICLE_FOUND = CODE_430;
104 public static final int ARTICLE_NOT_WANTED = CODE_435;
105 public static final int TRANSFER_FAILED = CODE_436;
106 public static final int ARTICLE_REJECTED = CODE_437;
107 public static final int POSTING_NOT_ALLOWED = CODE_440;
108 public static final int POSTING_FAILED = CODE_441;
109 public static final int AUTHENTICATION_REJECTED = CODE_482;
110 public static final int COMMAND_NOT_RECOGNIZED = CODE_500;
111 public static final int COMMAND_SYNTAX_ERROR = CODE_501;
112 public static final int PERMISSION_DENIED = CODE_502;
113 public static final int PROGRAM_FAULT = CODE_503;
114
115 // Cannot be instantiated
116
117 private NNTPReply()
118 {}
119
120 /***
121 * Determine if a reply code is an informational response. All
122 * codes beginning with a 1 are positive informational responses.
123 * Informational responses are used to provide human readable
124 * information such as help text.
125 * <p>
126 * @param reply The reply code to test.
127 * @return True if a reply code is an informational response, false
128 * if not.
129 ***/
130 public static boolean isInformational(int reply)
131 {
132 return (reply >= 100 && reply < 200);
133 }
134
135 /***
136 * Determine if a reply code is a positive completion response. All
137 * codes beginning with a 2 are positive completion responses.
138 * The NNTP server will send a positive completion response on the final
139 * successful completion of a command.
140 * <p>
141 * @param reply The reply code to test.
142 * @return True if a reply code is a postive completion response, false
143 * if not.
144 ***/
145 public static boolean isPositiveCompletion(int reply)
146 {
147 return (reply >= 200 && reply < 300);
148 }
149
150 /***
151 * Determine if a reply code is a positive intermediate response. All
152 * codes beginning with a 3 are positive intermediate responses.
153 * The NNTP server will send a positive intermediate response on the
154 * successful completion of one part of a multi-part command or
155 * sequence of commands. For example, after a successful POST command,
156 * a positive intermediate response will be sent to indicate that the
157 * server is ready to receive the article to be posted.
158 * <p>
159 * @param reply The reply code to test.
160 * @return True if a reply code is a postive intermediate response, false
161 * if not.
162 ***/
163 public static boolean isPositiveIntermediate(int reply)
164 {
165 return (reply >= 300 && reply < 400);
166 }
167
168 /***
169 * Determine if a reply code is a negative transient response. All
170 * codes beginning with a 4 are negative transient responses.
171 * The NNTP server will send a negative transient response on the
172 * failure of a correctly formatted command that could not be performed
173 * for some reason. For example, retrieving an article that does not
174 * exist will result in a negative transient response.
175 * <p>
176 * @param reply The reply code to test.
177 * @return True if a reply code is a negative transient response, false
178 * if not.
179 ***/
180 public static boolean isNegativeTransient(int reply)
181 {
182 return (reply >= 400 && reply < 500);
183 }
184
185 /***
186 * Determine if a reply code is a negative permanent response. All
187 * codes beginning with a 5 are negative permanent responses.
188 * The NNTP server will send a negative permanent response when
189 * it does not implement a command, a command is incorrectly formatted,
190 * or a serious program error occurs.
191 * <p>
192 * @param reply The reply code to test.
193 * @return True if a reply code is a negative permanent response, false
194 * if not.
195 ***/
196 public static boolean isNegativePermanent(int reply)
197 {
198 return (reply >= 500 && reply < 600);
199 }
200
201 }
202
203 /* Emacs configuration
204 * Local variables: **
205 * mode: java **
206 * c-basic-offset: 4 **
207 * indent-tabs-mode: nil **
208 * End: **
209 */