commons-net.jar Source Code

commons-net.jar is the bytecode of Apache Commons Net library, which implements the client side of many basic Internet protocols.

Apache Commons Net Source Code files are provided in the binary packge (commons-net-3.8.0-bin.zip). You can download it at Apache Commons Net Website.

The source code of commons-net-3.8.0.jar is provided below:

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org/apache/commons/net/ftp/parser/MacOsPeterFTPEntryParser.java

/*
 * 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.parser;
import java.text.ParseException;

import org.apache.commons.net.ftp.FTPClientConfig;
import org.apache.commons.net.ftp.FTPFile;

/**
 * Implementation FTPFileEntryParser and FTPFileListParser for pre MacOS-X Systems.
 *
 * @see org.apache.commons.net.ftp.FTPFileEntryParser FTPFileEntryParser (for usage instructions)
 * @since 3.1
 */
public class MacOsPeterFTPEntryParser extends ConfigurableFTPFileEntryParserImpl
{

    static final String DEFAULT_DATE_FORMAT
        = "MMM d yyyy"; //Nov 9 2001

    static final String DEFAULT_RECENT_DATE_FORMAT
        = "MMM d HH:mm"; //Nov 9 20:06

    /**
     * this is the regular expression used by this parser.
     *
     * Permissions:
     *    r   the file is readable
     *    w   the file is writable
     *    x   the file is executable
     *    -   the indicated permission is not granted
     *    L   mandatory locking occurs during access (the set-group-ID bit is
     *        on and the group execution bit is off)
     *    s   the set-user-ID or set-group-ID bit is on, and the corresponding
     *        user or group execution bit is also on
     *    S   undefined bit-state (the set-user-ID bit is on and the user
     *        execution bit is off)
     *    t   the 1000 (octal) bit, or sticky bit, is on [see chmod(1)], and
     *        execution is on
     *    T   the 1000 bit is turned on, and execution is off (undefined bit-
     *        state)
     *    e   z/OS external link bit
     */
    private static final String REGEX =
        "([bcdelfmpSs-])" // type (1)
        + "(((r|-)(w|-)([xsStTL-]))((r|-)(w|-)([xsStTL-]))((r|-)(w|-)([xsStTL-])))\\+?\\s+" // permission
        + "("
        +   "(folder\\s+)"
        + "|"
        +   "((\\d+)\\s+(\\d+)\\s+)" // resource size & data size
        + ")"
        + "(\\d+)\\s+"              // size
        /*
         * numeric or standard format date:
         *   yyyy-mm-dd (expecting hh:mm to follow)
         *   MMM [d]d
         *   [d]d MMM
         *   N.B. use non-space for MMM to allow for languages such as German which use
         *   diacritics (e.g. umlaut) in some abbreviations.
        */
        + "((?:\\d+[-/]\\d+[-/]\\d+)|(?:\\S{3}\\s+\\d{1,2})|(?:\\d{1,2}\\s+\\S{3}))\\s+"
        /*
           year (for non-recent standard format) - yyyy
           or time (for numeric or recent standard format) [h]h:mm
        */
        + "(\\d+(?::\\d+)?)\\s+"

        + "(\\S*)(\\s*.*)"; // the rest


    /**
     * The default constructor for a UnixFTPEntryParser object.
     *
     * @throws IllegalArgumentException
     * Thrown if the regular expression is unparseable.  Should not be seen
     * under normal conditions.  It it is seen, this is a sign that
     * <code>REGEX</code> is  not a valid regular expression.
     */
    public MacOsPeterFTPEntryParser()
    {
        this(null);
    }

    /**
     * This constructor allows the creation of a UnixFTPEntryParser object with
     * something other than the default configuration.
     *
     * @param config The {@link FTPClientConfig configuration} object used to
     * configure this parser.
     * @throws IllegalArgumentException
     * Thrown if the regular expression is unparseable.  Should not be seen
     * under normal conditions.  It it is seen, this is a sign that
     * <code>REGEX</code> is  not a valid regular expression.
     * @since 1.4
     */
    public MacOsPeterFTPEntryParser(final FTPClientConfig config)
    {
        super(REGEX);
        configure(config);
    }

    /**
     * Parses a line of a unix (standard) FTP server file listing and converts
     * it into a usable format in the form of an <code> FTPFile </code>
     * instance.  If the file listing line doesn't describe a file,
     * <code> null </code> is returned, otherwise a <code> FTPFile </code>
     * instance representing the files in the directory is returned.
     *
     * @param entry A line of text from the file listing
     * @return An FTPFile instance corresponding to the supplied entry
     */
    @Override
    public FTPFile parseFTPEntry(final String entry) {
        final FTPFile file = new FTPFile();
        file.setRawListing(entry);
        final int type;
        boolean isDevice = false;

        if (matches(entry))
        {
            final String typeStr = group(1);
            final String hardLinkCount = "0";
            final String usr = null;
            final String grp = null;
            final String filesize = group(20);
            final String datestr = group(21) + " " + group(22);
            String name = group(23);
            final String endtoken = group(24);

            try
            {
                file.setTimestamp(super.parseTimestamp(datestr));
            }
            catch (final ParseException e)
            {
                 // intentionally do nothing
            }

            // A 'whiteout' file is an ARTIFICIAL entry in any of several types of
            // 'translucent' filesystems, of which a 'union' filesystem is one.

            // bcdelfmpSs-
            switch (typeStr.charAt(0))
            {
            case 'd':
                type = FTPFile.DIRECTORY_TYPE;
                break;
            case 'e': // NET-39 => z/OS external link
                type = FTPFile.SYMBOLIC_LINK_TYPE;
                break;
            case 'l':
                type = FTPFile.SYMBOLIC_LINK_TYPE;
                break;
            case 'b':
            case 'c':
                isDevice = true;
                type = FTPFile.FILE_TYPE; // TODO change this if DEVICE_TYPE implemented
                break;
            case 'f':
            case '-':
                type = FTPFile.FILE_TYPE;
                break;
            default: // e.g. ? and w = whiteout
                type = FTPFile.UNKNOWN_TYPE;
            }

            file.setType(type);

            int g = 4;
            for (int access = 0; access < 3; access++, g += 4)
            {
                // Use != '-' to avoid having to check for suid and sticky bits
                file.setPermission(access, FTPFile.READ_PERMISSION,
                                   (!group(g).equals("-")));
                file.setPermission(access, FTPFile.WRITE_PERMISSION,
                                   (!group(g + 1).equals("-")));

                final String execPerm = group(g + 2);
                if (!execPerm.equals("-") && !Character.isUpperCase(execPerm.charAt(0)))
                {
                    file.setPermission(access, FTPFile.EXECUTE_PERMISSION, true);
                }
                else
                {
                    file.setPermission(access, FTPFile.EXECUTE_PERMISSION, false);
                }
            }

            if (!isDevice)
            {
                try
                {
                    file.setHardLinkCount(Integer.parseInt(hardLinkCount));
                }
                catch (final NumberFormatException e)
                {
                    // intentionally do nothing
                }
            }

            file.setUser(usr);
            file.setGroup(grp);

            try
            {
                file.setSize(Long.parseLong(filesize));
            }
            catch (final NumberFormatException e)
            {
                // intentionally do nothing
            }

            if (null == endtoken)
            {
                file.setName(name);
            }
            else
            {
                // oddball cases like symbolic links, file names
                // with spaces in them.
                name += endtoken;
                if (type == FTPFile.SYMBOLIC_LINK_TYPE)
                {

                    final int end = name.indexOf(" -> ");
                    // Give up if no link indicator is present
                    if (end == -1)
                    {
                        file.setName(name);
                    }
                    else
                    {
                        file.setName(name.substring(0, end));
                        file.setLink(name.substring(end + 4));
                    }

                }
                else
                {
                    file.setName(name);
                }
            }
            return file;
        }
        return null;
    }

    /**
     * Defines a default configuration to be used when this class is
     * instantiated without a {@link  FTPClientConfig  FTPClientConfig}
     * parameter being specified.
     * @return the default configuration for this parser.
     */
    @Override
    protected FTPClientConfig getDefaultConfiguration() {
        return new FTPClientConfig(
                FTPClientConfig.SYST_UNIX,
                DEFAULT_DATE_FORMAT,
                DEFAULT_RECENT_DATE_FORMAT);
    }

}

org/apache/commons/net/ftp/parser/MacOsPeterFTPEntryParser.java

 

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