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  /*
   * 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.ftp;

FTPReply stores a set of constants for FTP reply codes. To interpret the meaning of the codes, familiarity with RFC 959 is assumed. The mnemonic constant names are transcriptions from the code descriptions of RFC 959.

TODO replace with an enum

 
 
 public final class FTPReply
 {
 
     public static final int RESTART_MARKER = 110;
     public static final int SERVICE_NOT_READY = 120;
     public static final int DATA_CONNECTION_ALREADY_OPEN = 125;
     public static final int FILE_STATUS_OK = 150;
     public static final int COMMAND_OK = 200;
     public static final int COMMAND_IS_SUPERFLUOUS = 202;
     public static final int SYSTEM_STATUS = 211;
     public static final int DIRECTORY_STATUS = 212;
     public static final int FILE_STATUS = 213;
     public static final int HELP_MESSAGE = 214;
     public static final int NAME_SYSTEM_TYPE = 215;
     public static final int SERVICE_READY = 220;
     public static final int SERVICE_CLOSING_CONTROL_CONNECTION = 221;
     public static final int DATA_CONNECTION_OPEN = 225;
     public static final int CLOSING_DATA_CONNECTION = 226;
     public static final int ENTERING_PASSIVE_MODE = 227;
    

Since:
2.2
 
     public static final int ENTERING_EPSV_MODE = 229;
     public static final int USER_LOGGED_IN = 230;
     public static final int FILE_ACTION_OK = 250;
     public static final int PATHNAME_CREATED = 257;
     public static final int NEED_PASSWORD = 331;
     public static final int NEED_ACCOUNT = 332;
     public static final int FILE_ACTION_PENDING = 350;
     public static final int SERVICE_NOT_AVAILABLE = 421;
     public static final int CANNOT_OPEN_DATA_CONNECTION = 425;
     public static final int TRANSFER_ABORTED = 426;
     public static final int FILE_ACTION_NOT_TAKEN = 450;
     public static final int ACTION_ABORTED = 451;
     public static final int INSUFFICIENT_STORAGE = 452;
     public static final int UNRECOGNIZED_COMMAND = 500;
     public static final int SYNTAX_ERROR_IN_ARGUMENTS = 501;
     public static final int COMMAND_NOT_IMPLEMENTED = 502;
     public static final int BAD_COMMAND_SEQUENCE = 503;
     public static final int COMMAND_NOT_IMPLEMENTED_FOR_PARAMETER = 504;
     public static final int NOT_LOGGED_IN = 530;
     public static final int NEED_ACCOUNT_FOR_STORING_FILES = 532;
     public static final int FILE_UNAVAILABLE = 550;
     public static final int PAGE_TYPE_UNKNOWN = 551;
     public static final int STORAGE_ALLOCATION_EXCEEDED = 552;
     public static final int FILE_NAME_NOT_ALLOWED = 553;
 
     // FTPS Reply Codes
 
    

Since:
2.0
 
     public static final int SECURITY_DATA_EXCHANGE_COMPLETE = 234;
    

Since:
2.0
 
     public static final int SECURITY_DATA_EXCHANGE_SUCCESSFULLY = 235;
    

Since:
2.0
 
     public static final int SECURITY_MECHANISM_IS_OK = 334;
    

Since:
2.0
 
     public static final int SECURITY_DATA_IS_ACCEPTABLE = 335;
    

Since:
2.0
 
     public static final int UNAVAILABLE_RESOURCE = 431;
    

Since:
2.2
 
     public static final int BAD_TLS_NEGOTIATION_OR_DATA_ENCRYPTION_REQUIRED = 522;
    

Since:
2.0
 
     public static final int DENIED_FOR_POLICY_REASONS = 533;
    

Since:
2.0
 
     public static final int REQUEST_DENIED = 534;
    

Since:
2.0
 
     public static final int FAILED_SECURITY_CHECK = 535;
    

Since:
2.0
 
     public static final int REQUESTED_PROT_LEVEL_NOT_SUPPORTED = 536;
 
     // IPv6 error codes
     // Note this is also used as an FTPS error code reply
     

Since:
2.2
 
    public static final int EXTENDED_PORT_FAILURE = 522;
    // Cannot be instantiated
    private FTPReply()
    {}

    
Determine if a reply code is a positive preliminary response. All codes beginning with a 1 are positive preliminary responses. Postitive preliminary responses are used to indicate tentative success. No further commands can be issued to the FTP server after a positive preliminary response until a follow up response is received from the server.

Parameters:
reply The reply code to test.
Returns:
True if a reply code is a postive preliminary response, false if not.
    public static boolean isPositivePreliminary(int reply)
    {
        return (reply >= 100 && reply < 200);
    }

    
Determine if a reply code is a positive completion response. All codes beginning with a 2 are positive completion responses. The FTP server will send a positive completion response on the final successful completion of a command.

Parameters:
reply The reply code to test.
Returns:
True if a reply code is a postive completion response, false if not.
    public static boolean isPositiveCompletion(int reply)
    {
        return (reply >= 200 && reply < 300);
    }

    
Determine if a reply code is a positive intermediate response. All codes beginning with a 3 are positive intermediate responses. The FTP server will send a positive intermediate response on the successful completion of one part of a multi-part sequence of commands. For example, after a successful USER command, a positive intermediate response will be sent to indicate that the server is ready for the PASS command.

Parameters:
reply The reply code to test.
Returns:
True if a reply code is a postive intermediate response, false if not.
    public static boolean isPositiveIntermediate(int reply)
    {
        return (reply >= 300 && reply < 400);
    }

    
Determine if a reply code is a negative transient response. All codes beginning with a 4 are negative transient responses. The FTP server will send a negative transient response on the failure of a command that can be reattempted with success.

Parameters:
reply The reply code to test.
Returns:
True if a reply code is a negative transient response, false if not.
    public static boolean isNegativeTransient(int reply)
    {
        return (reply >= 400 && reply < 500);
    }

    
Determine if a reply code is a negative permanent response. All codes beginning with a 5 are negative permanent responses. The FTP server will send a negative permanent response on the failure of a command that cannot be reattempted with success.

Parameters:
reply The reply code to test.
Returns:
True if a reply code is a negative permanent response, false if not.
    public static boolean isNegativePermanent(int reply)
    {
        return (reply >= 500 && reply < 600);
    }

    
Determine if a reply code is a protected response.

Parameters:
reply The reply code to test.
Returns:
True if a reply code is a protected response, false if not.
Since:
3.0
    public static boolean isProtectedReplyCode(int reply)
    {
        // actually, only 3 protected reply codes are
        // defined in RFC 2228: 631, 632 and 633.
        return (reply >= 600 && reply < 700);
    }
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