Module jcifs
Package org.codelibs.jcifs.smb1.util

Class Encdec

java.lang.Object
org.codelibs.jcifs.smb1.util.Encdec
public class Encdec extends Object
Encoding and decoding utility class for SMB1 protocol. Provides methods for encoding/decoding various data types in different byte orders.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final long
    MILLISECONDS_BETWEEN_1970_AND_1601
    Milliseconds between January 1, 1970 and January 1, 1601 (Windows epoch).
    static final long
    SEC_BETWEEEN_1904_AND_1970
    Seconds between January 1, 1904 and January 1, 1970 (Mac epoch).
    static final int
    TIME_1601_NANOS_64BE
    Time encoding type: 1601 epoch, 64-bit nanoseconds, big-endian.
    static final int
    TIME_1601_NANOS_64LE
    Time encoding type: 1601 epoch, 64-bit nanoseconds, little-endian.
    static final int
    TIME_1904_SEC_32BE
    Time encoding type: 1904 epoch, 32-bit seconds, big-endian.
    static final int
    TIME_1904_SEC_32LE
    Time encoding type: 1904 epoch, 32-bit seconds, little-endian.
    static final int
    TIME_1970_MILLIS_64BE
    Time encoding type: 1970 epoch, 64-bit milliseconds, big-endian.
    static final int
    TIME_1970_MILLIS_64LE
    Time encoding type: 1970 epoch, 64-bit milliseconds, little-endian.
    static final int
    TIME_1970_SEC_32BE
    Time encoding type: 1970 epoch, 32-bit seconds, big-endian.
    static final int
    TIME_1970_SEC_32LE
    Time encoding type: 1970 epoch, 32-bit seconds, little-endian.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Encdec()
    Default constructor for Encdec.

  • Method Summary

    Modifier and Type
    Method
    Description
    static double
    dec_doublebe(byte[] src, int si)
    Decodes a double value from big-endian byte order.
    static double
    dec_doublele(byte[] src, int si)
    Decodes a double value from little-endian byte order.
    static float
    dec_floatbe(byte[] src, int si)
    Decodes a float value from big-endian byte order.
    static float
    dec_floatle(byte[] src, int si)
    Decodes a float value from little-endian byte order.
    static Date
    dec_time(byte[] src, int si, int enc)
    Decodes a Date value according to the specified time encoding type.
    static String
    dec_ucs2le(byte[] src, int si, int slim, char[] buf)
    Decodes a UCS-2 little-endian encoded string from a byte array.
    static short
    dec_uint16be(byte[] src, int si)
    Decodes a 16-bit unsigned integer from big-endian byte order.
    static short
    dec_uint16le(byte[] src, int si)
    Decodes a 16-bit unsigned integer from little-endian byte order.
    static int
    dec_uint32be(byte[] src, int si)
    Decodes a 32-bit unsigned integer from big-endian byte order.
    static int
    dec_uint32le(byte[] src, int si)
    Decodes a 32-bit unsigned integer from little-endian byte order.
    static long
    dec_uint64be(byte[] src, int si)
    Decodes a 64-bit unsigned integer from big-endian byte order.
    static long
    dec_uint64le(byte[] src, int si)
    Decodes a 64-bit unsigned integer from little-endian byte order.
    static String
    dec_utf8(byte[] src, int si, int slim)
    Decodes a UTF-8 encoded string from a byte array.
    static int
    enc_doublebe(double d, byte[] dst, int di)
    Encodes a double value in big-endian byte order.
    static int
    enc_doublele(double d, byte[] dst, int di)
    Encodes a double value in little-endian byte order.
    static int
    enc_floatbe(float f, byte[] dst, int di)
    Encodes a float value in big-endian byte order.
    static int
    enc_floatle(float f, byte[] dst, int di)
    Encodes a float value in little-endian byte order.
    static int
    enc_time(Date date, byte[] dst, int di, int enc)
    Encodes a Date value according to the specified time encoding type.
    static int
    enc_uint16be(short s, byte[] dst, int di)
    Encodes a 16-bit unsigned integer in big-endian byte order.
    static int
    enc_uint16le(short s, byte[] dst, int di)
    Encodes a 16-bit unsigned integer in little-endian byte order.
    static int
    enc_uint32be(int i, byte[] dst, int di)
    Encodes a 32-bit unsigned integer in big-endian byte order.
    static int
    enc_uint32le(int i, byte[] dst, int di)
    Encodes a 32-bit unsigned integer in little-endian byte order.
    static int
    enc_uint64be(long l, byte[] dst, int di)
    Encodes a 64-bit unsigned integer in big-endian byte order.
    static int
    enc_uint64le(long l, byte[] dst, int di)
    Encodes a 64-bit unsigned integer in little-endian byte order.
    static int
    enc_utf8(String str, byte[] dst, int di, int dlim)
    Encodes a String as UTF-8 bytes.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • MILLISECONDS_BETWEEN_1970_AND_1601

      public static final long MILLISECONDS_BETWEEN_1970_AND_1601
      Milliseconds between January 1, 1970 and January 1, 1601 (Windows epoch).
      See Also:

    • SEC_BETWEEEN_1904_AND_1970

      public static final long SEC_BETWEEEN_1904_AND_1970
      Seconds between January 1, 1904 and January 1, 1970 (Mac epoch).
      See Also:

    • TIME_1970_SEC_32BE

      public static final int TIME_1970_SEC_32BE
      Time encoding type: 1970 epoch, 32-bit seconds, big-endian.
      See Also:

    • TIME_1970_SEC_32LE

      public static final int TIME_1970_SEC_32LE
      Time encoding type: 1970 epoch, 32-bit seconds, little-endian.
      See Also:

    • TIME_1904_SEC_32BE

      public static final int TIME_1904_SEC_32BE
      Time encoding type: 1904 epoch, 32-bit seconds, big-endian.
      See Also:

    • TIME_1904_SEC_32LE

      public static final int TIME_1904_SEC_32LE
      Time encoding type: 1904 epoch, 32-bit seconds, little-endian.
      See Also:

    • TIME_1601_NANOS_64LE

      public static final int TIME_1601_NANOS_64LE
      Time encoding type: 1601 epoch, 64-bit nanoseconds, little-endian.
      See Also:

    • TIME_1601_NANOS_64BE

      public static final int TIME_1601_NANOS_64BE
      Time encoding type: 1601 epoch, 64-bit nanoseconds, big-endian.
      See Also:

    • TIME_1970_MILLIS_64BE

      public static final int TIME_1970_MILLIS_64BE
      Time encoding type: 1970 epoch, 64-bit milliseconds, big-endian.
      See Also:

    • TIME_1970_MILLIS_64LE

      public static final int TIME_1970_MILLIS_64LE
      Time encoding type: 1970 epoch, 64-bit milliseconds, little-endian.
      See Also:

  • Constructor Details

    • Encdec

      public Encdec()
      Default constructor for Encdec. This is a utility class with static methods.

  • Method Details

    • enc_uint16be

      public static int enc_uint16be(short s, byte[] dst, int di)
      Encodes a 16-bit unsigned integer in big-endian byte order.
      Parameters:
      s - the short value to encode
      dst - the destination byte array
      di - the starting index in the destination array
      Returns:
      the number of bytes written (2)

    • enc_uint32be

      public static int enc_uint32be(int i, byte[] dst, int di)
      Encodes a 32-bit unsigned integer in big-endian byte order.
      Parameters:
      i - the integer value to encode
      dst - the destination byte array
      di - the starting index in the destination array
      Returns:
      the number of bytes written (4)

    • enc_uint16le

      public static int enc_uint16le(short s, byte[] dst, int di)
      Encodes a 16-bit unsigned integer in little-endian byte order.
      Parameters:
      s - the short value to encode
      dst - the destination byte array
      di - the starting index in the destination array
      Returns:
      the number of bytes written (2)

    • enc_uint32le

      public static int enc_uint32le(int i, byte[] dst, int di)
      Encodes a 32-bit unsigned integer in little-endian byte order.
      Parameters:
      i - the integer value to encode
      dst - the destination byte array
      di - the starting index in the destination array
      Returns:
      the number of bytes written (4)

    • dec_uint16be

      public static short dec_uint16be(byte[] src, int si)
      Decodes a 16-bit unsigned integer from big-endian byte order.
      Parameters:
      src - the source byte array
      si - the starting index in the source array
      Returns:
      the decoded short value

    • dec_uint32be

      public static int dec_uint32be(byte[] src, int si)
      Decodes a 32-bit unsigned integer from big-endian byte order.
      Parameters:
      src - the source byte array
      si - the starting index in the source array
      Returns:
      the decoded integer value

    • dec_uint16le

      public static short dec_uint16le(byte[] src, int si)
      Decodes a 16-bit unsigned integer from little-endian byte order.
      Parameters:
      src - the source byte array
      si - the starting index in the source array
      Returns:
      the decoded short value

    • dec_uint32le

      public static int dec_uint32le(byte[] src, int si)
      Decodes a 32-bit unsigned integer from little-endian byte order.
      Parameters:
      src - the source byte array
      si - the starting index in the source array
      Returns:
      the decoded integer value

    • enc_uint64be

      public static int enc_uint64be(long l, byte[] dst, int di)
      Encodes a 64-bit unsigned integer in big-endian byte order.
      Parameters:
      l - the long value to encode
      dst - the destination byte array
      di - the starting index in the destination array
      Returns:
      the number of bytes written (8)

    • enc_uint64le

      public static int enc_uint64le(long l, byte[] dst, int di)
      Encodes a 64-bit unsigned integer in little-endian byte order.
      Parameters:
      l - the long value to encode
      dst - the destination byte array
      di - the starting index in the destination array
      Returns:
      the number of bytes written (8)

    • dec_uint64be

      public static long dec_uint64be(byte[] src, int si)
      Decodes a 64-bit unsigned integer from big-endian byte order.
      Parameters:
      src - the source byte array
      si - the starting index in the source array
      Returns:
      the decoded long value

    • dec_uint64le

      public static long dec_uint64le(byte[] src, int si)
      Decodes a 64-bit unsigned integer from little-endian byte order.
      Parameters:
      src - the source byte array
      si - the starting index in the source array
      Returns:
      the decoded long value

    • enc_floatle

      public static int enc_floatle(float f, byte[] dst, int di)
      Encodes a float value in little-endian byte order.
      Parameters:
      f - the float value to encode
      dst - the destination byte array
      di - the starting index in the destination array
      Returns:
      the number of bytes written (4)

    • enc_floatbe

      public static int enc_floatbe(float f, byte[] dst, int di)
      Encodes a float value in big-endian byte order.
      Parameters:
      f - the float value to encode
      dst - the destination byte array
      di - the starting index in the destination array
      Returns:
      the number of bytes written (4)

    • dec_floatle

      public static float dec_floatle(byte[] src, int si)
      Decodes a float value from little-endian byte order.
      Parameters:
      src - the source byte array
      si - the starting index in the source array
      Returns:
      the decoded float value

    • dec_floatbe

      public static float dec_floatbe(byte[] src, int si)
      Decodes a float value from big-endian byte order.
      Parameters:
      src - the source byte array
      si - the starting index in the source array
      Returns:
      the decoded float value

    • enc_doublele

      public static int enc_doublele(double d, byte[] dst, int di)
      Encodes a double value in little-endian byte order.
      Parameters:
      d - the double value to encode
      dst - the destination byte array
      di - the starting index in the destination array
      Returns:
      the number of bytes written (8)

    • enc_doublebe

      public static int enc_doublebe(double d, byte[] dst, int di)
      Encodes a double value in big-endian byte order.
      Parameters:
      d - the double value to encode
      dst - the destination byte array
      di - the starting index in the destination array
      Returns:
      the number of bytes written (8)

    • dec_doublele

      public static double dec_doublele(byte[] src, int si)
      Decodes a double value from little-endian byte order.
      Parameters:
      src - the source byte array
      si - the starting index in the source array
      Returns:
      the decoded double value

    • dec_doublebe

      public static double dec_doublebe(byte[] src, int si)
      Decodes a double value from big-endian byte order.
      Parameters:
      src - the source byte array
      si - the starting index in the source array
      Returns:
      the decoded double value

    • enc_time

      public static int enc_time(Date date, byte[] dst, int di, int enc)
      Encodes a Date value according to the specified time encoding type.
      Parameters:
      date - the Date to encode
      dst - the destination byte array
      di - the starting index in the destination array
      enc - the time encoding type (e.g., TIME_1970_SEC_32BE)
      Returns:
      the number of bytes written

    • dec_time

      public static Date dec_time(byte[] src, int si, int enc)
      Decodes a Date value according to the specified time encoding type.
      Parameters:
      src - the source byte array
      si - the starting index in the source array
      enc - the time encoding type (e.g., TIME_1970_SEC_32BE)
      Returns:
      the decoded Date value

    • enc_utf8

      public static int enc_utf8(String str, byte[] dst, int di, int dlim) throws IOException
      Encodes a String as UTF-8 bytes.
      Parameters:
      str - the String to encode
      dst - the destination byte array
      di - the starting index in the destination array
      dlim - the maximum index in the destination array
      Returns:
      the number of bytes written
      Throws:
      IOException - if an encoding error occurs

    • dec_utf8

      public static String dec_utf8(byte[] src, int si, int slim) throws IOException
      Decodes a UTF-8 encoded string from a byte array.
      Parameters:
      src - the source byte array
      si - the starting index in the source array
      slim - the limit index in the source array
      Returns:
      the decoded String
      Throws:
      IOException - if a decoding error occurs

    • dec_ucs2le

      public static String dec_ucs2le(byte[] src, int si, int slim, char[] buf) throws IOException
      Decodes a UCS-2 little-endian encoded string from a byte array.
      Parameters:
      src - the source byte array
      si - the starting index in the source array
      slim - the limit index in the source array
      buf - the character buffer for decoding
      Returns:
      the decoded String
      Throws:
      IOException - if a decoding error occurs