    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 *      https://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
    018package org.apache.commons.net.ftp;
    019
    020/**
    021 * 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
    022 * names are transcriptions from the code descriptions of RFC 959.
    023 * <p>
    024 * TODO replace with an enum
    025 * </p>
    026 */
    027public final class FTPReply {
    028
    029    /** Reply code {@value}. */
    030    public static final int RESTART_MARKER = 110;
    031
    032    /** Reply code {@value}. */
    033    public static final int SERVICE_NOT_READY = 120;
    034
    035    /** Reply code {@value}. */
    036    public static final int DATA_CONNECTION_ALREADY_OPEN = 125;
    037
    038    /** Reply code {@value}. */
    039    public static final int FILE_STATUS_OK = 150;
    040
    041    /** Reply code {@value}. */
    042    public static final int COMMAND_OK = 200;
    043
    044    /** Reply code {@value}. */
    045    public static final int COMMAND_IS_SUPERFLUOUS = 202;
    046
    047    /** Reply code {@value}. */
    048    public static final int SYSTEM_STATUS = 211;
    049
    050    /** Reply code {@value}. */
    051    public static final int DIRECTORY_STATUS = 212;
    052
    053    /** Reply code {@value}. */
    054    public static final int FILE_STATUS = 213;
    055
    056    /** Reply code {@value}. */
    057    public static final int HELP_MESSAGE = 214;
    058
    059    /** Reply code {@value}. */
    060    public static final int NAME_SYSTEM_TYPE = 215;
    061
    062    /** Reply code {@value}. */
    063    public static final int SERVICE_READY = 220;
    064
    065    /** Reply code {@value}. */
    066    public static final int SERVICE_CLOSING_CONTROL_CONNECTION = 221;
    067
    068    /** Reply code {@value}. */
    069    public static final int DATA_CONNECTION_OPEN = 225;
    070
    071    /** Reply code {@value}. */
    072    public static final int CLOSING_DATA_CONNECTION = 226;
    073
    074    /** Reply code {@value}. */
    075    public static final int ENTERING_PASSIVE_MODE = 227;
    076
    077    /**
    078     * Reply code {@value}.
    079     *
    080     * @since 2.2
    081     */
    082    public static final int ENTERING_EPSV_MODE = 229;
    083
    084    /** Reply code {@value}. */
    085    public static final int USER_LOGGED_IN = 230;
    086
    087    /** Reply code {@value}. */
    088    public static final int FILE_ACTION_OK = 250;
    089
    090    /** Reply code {@value}. */
    091    public static final int PATHNAME_CREATED = 257;
    092
    093    /** Reply code {@value}. */
    094    public static final int NEED_PASSWORD = 331;
    095
    096    /** Reply code {@value}. */
    097    public static final int NEED_ACCOUNT = 332;
    098
    099    /** Reply code {@value}. */
    100    public static final int FILE_ACTION_PENDING = 350;
    101
    102    /** Reply code {@value}. */
    103    public static final int SERVICE_NOT_AVAILABLE = 421;
    104
    105    /** Reply code {@value}. */
    106    public static final int CANNOT_OPEN_DATA_CONNECTION = 425;
    107
    108    /** Reply code {@value}. */
    109    public static final int TRANSFER_ABORTED = 426;
    110
    111    /** Reply code {@value}. */
    112    public static final int FILE_ACTION_NOT_TAKEN = 450;
    113
    114    /** Reply code {@value}. */
    115    public static final int ACTION_ABORTED = 451;
    116
    117    /** Reply code {@value}. */
    118    public static final int INSUFFICIENT_STORAGE = 452;
    119
    120    /** Reply code {@value}. */
    121    public static final int UNRECOGNIZED_COMMAND = 500;
    122
    123    /** Reply code {@value}. */
    124    public static final int SYNTAX_ERROR_IN_ARGUMENTS = 501;
    125
    126    /** Reply code {@value}. */
    127    public static final int COMMAND_NOT_IMPLEMENTED = 502;
    128
    129    /** Reply code {@value}. */
    130    public static final int BAD_COMMAND_SEQUENCE = 503;
    131
    132    /** Reply code {@value}. */
    133    public static final int COMMAND_NOT_IMPLEMENTED_FOR_PARAMETER = 504;
    134
    135    /** Reply code {@value}. */
    136    public static final int NOT_LOGGED_IN = 530;
    137
    138    /** Reply code {@value}. */
    139    public static final int NEED_ACCOUNT_FOR_STORING_FILES = 532;
    140
    141    /** Reply code {@value}. */
    142    public static final int FILE_UNAVAILABLE = 550;
    143
    144    /** Reply code {@value}. */
    145    public static final int PAGE_TYPE_UNKNOWN = 551;
    146
    147    /** Reply code {@value}. */
    148    public static final int STORAGE_ALLOCATION_EXCEEDED = 552;
    149
    150    /** Reply code {@value}. */
    151    public static final int FILE_NAME_NOT_ALLOWED = 553;
    152
    153    // FTPS Reply Codes
    154
    155    /**
    156     * FTPS reply code {@value}
    157     *
    158     * @since 2.0
    159     */
    160    public static final int SECURITY_DATA_EXCHANGE_COMPLETE = 234;
    161
    162    /**
    163     * FTPS reply code {@value}
    164     *
    165     * @since 2.0
    166     */
    167    public static final int SECURITY_DATA_EXCHANGE_SUCCESSFULLY = 235;
    168
    169    /**
    170     * FTPS reply code {@value}
    171     *
    172     * @since 2.0
    173     */
    174    public static final int SECURITY_MECHANISM_IS_OK = 334;
    175
    176    /**
    177     * FTPS reply code {@value}
    178     *
    179     * @since 2.0
    180     */
    181    public static final int SECURITY_DATA_IS_ACCEPTABLE = 335;
    182
    183    /**
    184     * FTPS reply code {@value}
    185     *
    186     * @since 2.0
    187     */
    188    public static final int UNAVAILABLE_RESOURCE = 431;
    189
    190    /**
    191     * FTPS reply code {@value}
    192     *
    193     * @since 2.0
    194     */
    195    public static final int BAD_TLS_NEGOTIATION_OR_DATA_ENCRYPTION_REQUIRED = 522;
    196
    197    /**
    198     * FTPS reply code {@value}
    199     *
    200     * @since 2.0
    201     */
    202    public static final int DENIED_FOR_POLICY_REASONS = 533;
    203
    204    /**
    205     * FTPS reply code {@value}
    206     *
    207     * @since 2.0
    208     */
    209    public static final int REQUEST_DENIED = 534;
    210
    211    /**
    212     * FTPS reply code {@value}
    213     *
    214     * @since 2.0
    215     */
    216    public static final int FAILED_SECURITY_CHECK = 535;
    217
    218    /**
    219     * FTPS reply code {@value}
    220     *
    221     * @since 2.0
    222     */
    223    public static final int REQUESTED_PROT_LEVEL_NOT_SUPPORTED = 536;
    224
    225    /**
    226     * IPv6 error codes.
    227     * <p>
    228     * Note this is also used as an FTPS error code reply
    229     * </p>
    230     *
    231     * @since 2.2
    232     */
    233    public static final int EXTENDED_PORT_FAILURE = 522;
    234
    235    /**
    236     * Tests 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
    237     * negative permanent response on the failure of a command that cannot be reattempted with success.
    238     *
    239     * @param reply The reply code to test.
    240     * @return True if a reply code is a negative permanent response, false if not.
    241     */
    242    public static boolean isNegativePermanent(final int reply) {
    243        return reply >= 500 && reply < 600;
    244    }
    245
    246    /**
    247     * Tests 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
    248     * negative transient response on the failure of a command that can be reattempted with success.
    249     *
    250     * @param reply The reply code to test.
    251     * @return True if a reply code is a negative transient response, false if not.
    252     */
    253    public static boolean isNegativeTransient(final int reply) {
    254        return reply >= 400 && reply < 500;
    255    }
    256
    257    /**
    258     * Tests 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
    259     * positive completion response on the final successful completion of a command.
    260     *
    261     * @param reply The reply code to test.
    262     * @return True if a reply code is a positive completion response, false if not.
    263     */
    264    public static boolean isPositiveCompletion(final int reply) {
    265        return reply >= 200 && reply < 300;
    266    }
    267
    268    /**
    269     * Tests if a reply code is a positive intermediate response. All codes beginning with a 3 are positive intermediate responses. The FTP server will send
    270     * a positive intermediate response on the successful completion of one part of a multipart sequence of commands. For example, after a successful USER
    271     * command, a positive intermediate response will be sent to indicate that the server is ready for the PASS command.
    272     *
    273     * @param reply The reply code to test.
    274     * @return True if a reply code is a positive intermediate response, false if not.
    275     */
    276    public static boolean isPositiveIntermediate(final int reply) {
    277        return reply >= 300 && reply < 400;
    278    }
    279
    280    /**
    281     * Tests if a reply code is a positive preliminary response. All codes beginning with a 1 are positive preliminary responses. Postitive preliminary
    282     * responses are used to indicate tentative success. No further commands can be issued to the FTP server after a positive preliminary response until a
    283     * follow-up response is received from the server.
    284     *
    285     * @param reply The reply code to test.
    286     * @return True if a reply code is a positive preliminary response, false if not.
    287     */
    288    public static boolean isPositivePreliminary(final int reply) {
    289        return reply >= 100 && reply < 200;
    290    }
    291
    292    /**
    293     * Tests if a reply code is a protected response.
    294     *
    295     * @param reply The reply code to test.
    296     * @return True if a reply code is a protected response, false if not.
    297     * @since 3.0
    298     */
    299    public static boolean isProtectedReplyCode(final int reply) {
    300        // actually, only 3 protected reply codes are
    301        // defined in RFC 2228: 631, 632 and 633.
    302        return reply >= 600 && reply < 700;
    303    }
    304
    305    /** Cannot be instantiated. */
    306    private FTPReply() {
    307    }
    308
    309}