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The UnboundID LDAP SDK for Java is a fast, comprehensive, and easy-to-use
Java API for communicating with LDAP directory servers and performing
related tasks like reading and writing LDIF, encoding and decoding data
using base64 and ASN.1 BER, and performing secure communication. This
package contains the Standard Edition of the LDAP SDK, which is a
complete, general-purpose library for communicating with LDAPv3 directory
servers.
/*
* Copyright 2008-2021 Ping Identity Corporation
* All Rights Reserved.
*/
/*
* Copyright 2008-2021 Ping Identity Corporation
*
* Licensed 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.
*/
/*
* Copyright (C) 2008-2021 Ping Identity Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License (GPLv2 only)
* or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see .
*/
package com.unboundid.asn1;
import com.unboundid.util.Debug;
import com.unboundid.util.NotMutable;
import com.unboundid.util.NotNull;
import com.unboundid.util.ThreadSafety;
import com.unboundid.util.ThreadSafetyLevel;
import static com.unboundid.asn1.ASN1Messages.*;
/**
* This class provides an ASN.1 integer element that is backed by a Java
* {@code long}, which is a signed 64-bit value and can represent any integer
* between -9223372036854775808 and 9223372036854775807. If you need support
* for integer values of arbitrary size, see the {@link ASN1BigInteger} class as
* an alternative.
*/
@NotMutable()
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class ASN1Long
extends ASN1Element
{
/**
* The serial version UID for this serializable class.
*/
private static final long serialVersionUID = -3445506299288414013L;
// The long value for this element.
private final long longValue;
/**
* Creates a new ASN.1 long element with the default BER type and the
* provided long value.
*
* @param longValue The long value to use for this element.
*/
public ASN1Long(final long longValue)
{
super(ASN1Constants.UNIVERSAL_INTEGER_TYPE, encodeLongValue(longValue));
this.longValue = longValue;
}
/**
* Creates a new ASN.1 long element with the specified BER type and the
* provided long value.
*
* @param type The BER type to use for this element.
* @param longValue The long value to use for this element.
*/
public ASN1Long(final byte type, final long longValue)
{
super(type, encodeLongValue(longValue));
this.longValue = longValue;
}
/**
* Creates a new ASN.1 long element with the specified BER type and the
* provided long and pre-encoded values.
*
* @param type The BER type to use for this element.
* @param longValue The long value to use for this element.
* @param value The pre-encoded value to use for this element.
*/
private ASN1Long(final byte type, final long longValue,
@NotNull final byte[] value)
{
super(type, value);
this.longValue = longValue;
}
/**
* Encodes the provided long value to a byte array suitable for use as the
* value of a long element.
*
* @param longValue The long value to be encoded.
*
* @return A byte array containing the encoded value.
*/
@NotNull()
static byte[] encodeLongValue(final long longValue)
{
if (longValue < 0)
{
if ((longValue & 0xFFFF_FFFF_FFFF_FF80L) == 0xFFFF_FFFF_FFFF_FF80L)
{
return new byte[]
{
(byte) (longValue & 0xFFL)
};
}
else if ((longValue & 0xFFFF_FFFF_FFFF_8000L) == 0xFFFF_FFFF_FFFF_8000L)
{
return new byte[]
{
(byte) ((longValue >> 8) & 0xFFL),
(byte) (longValue & 0xFFL)
};
}
else if ((longValue & 0xFFFF_FFFF_FF80_0000L) == 0xFFFF_FFFF_FF80_0000L)
{
return new byte[]
{
(byte) ((longValue >> 16) & 0xFFL),
(byte) ((longValue >> 8) & 0xFFL),
(byte) (longValue & 0xFFL)
};
}
else if ((longValue & 0xFFFF_FFFF_8000_0000L) == 0xFFFF_FFFF_8000_0000L)
{
return new byte[]
{
(byte) ((longValue >> 24) & 0xFFL),
(byte) ((longValue >> 16) & 0xFFL),
(byte) ((longValue >> 8) & 0xFFL),
(byte) (longValue & 0xFFL)
};
}
else if ((longValue & 0xFFFF_FF80_0000_0000L) == 0xFFFF_FF80_0000_0000L)
{
return new byte[]
{
(byte) ((longValue >> 32) & 0xFFL),
(byte) ((longValue >> 24) & 0xFFL),
(byte) ((longValue >> 16) & 0xFFL),
(byte) ((longValue >> 8) & 0xFFL),
(byte) (longValue & 0xFFL)
};
}
else if ((longValue & 0xFFFF_8000_0000_0000L) == 0xFFFF_8000_0000_0000L)
{
return new byte[]
{
(byte) ((longValue >> 40) & 0xFFL),
(byte) ((longValue >> 32) & 0xFFL),
(byte) ((longValue >> 24) & 0xFFL),
(byte) ((longValue >> 16) & 0xFFL),
(byte) ((longValue >> 8) & 0xFFL),
(byte) (longValue & 0xFFL)
};
}
else if ((longValue & 0xFF80_0000_0000_0000L) == 0xFF80_0000_0000_0000L)
{
return new byte[]
{
(byte) ((longValue >> 48) & 0xFFL),
(byte) ((longValue >> 40) & 0xFFL),
(byte) ((longValue >> 32) & 0xFFL),
(byte) ((longValue >> 24) & 0xFFL),
(byte) ((longValue >> 16) & 0xFFL),
(byte) ((longValue >> 8) & 0xFFL),
(byte) (longValue & 0xFFL)
};
}
else
{
return new byte[]
{
(byte) ((longValue >> 56) & 0xFFL),
(byte) ((longValue >> 48) & 0xFFL),
(byte) ((longValue >> 40) & 0xFFL),
(byte) ((longValue >> 32) & 0xFFL),
(byte) ((longValue >> 24) & 0xFFL),
(byte) ((longValue >> 16) & 0xFFL),
(byte) ((longValue >> 8) & 0xFFL),
(byte) (longValue & 0xFFL)
};
}
}
else
{
if ((longValue & 0x0000_0000_0000_007FL) == longValue)
{
return new byte[]
{
(byte) (longValue & 0x7FL)
};
}
else if ((longValue & 0x0000_0000_0000_7FFFL) == longValue)
{
return new byte[]
{
(byte) ((longValue >> 8) & 0x7FL),
(byte) (longValue & 0xFFL)
};
}
else if ((longValue & 0x0000_0000_007F_FFFFL) == longValue)
{
return new byte[]
{
(byte) ((longValue >> 16) & 0x7FL),
(byte) ((longValue >> 8) & 0xFFL),
(byte) (longValue & 0xFFL)
};
}
else if ((longValue & 0x0000_0000_7FFF_FFFFL) == longValue)
{
return new byte[]
{
(byte) ((longValue >> 24) & 0x7FL),
(byte) ((longValue >> 16) & 0xFFL),
(byte) ((longValue >> 8) & 0xFFL),
(byte) (longValue & 0xFFL)
};
}
else if ((longValue & 0x0000_007F_FFFF_FFFFL) == longValue)
{
return new byte[]
{
(byte) ((longValue >> 32) & 0x7FL),
(byte) ((longValue >> 24) & 0xFFL),
(byte) ((longValue >> 16) & 0xFFL),
(byte) ((longValue >> 8) & 0xFFL),
(byte) (longValue & 0xFFL)
};
}
else if ((longValue & 0x0000_7FFF_FFFF_FFFFL) == longValue)
{
return new byte[]
{
(byte) ((longValue >> 40) & 0x7FL),
(byte) ((longValue >> 32) & 0xFFL),
(byte) ((longValue >> 24) & 0xFFL),
(byte) ((longValue >> 16) & 0xFFL),
(byte) ((longValue >> 8) & 0xFFL),
(byte) (longValue & 0xFFL)
};
}
else if ((longValue & 0x007F_FFFF_FFFF_FFFFL) == longValue)
{
return new byte[]
{
(byte) ((longValue >> 48) & 0x7FL),
(byte) ((longValue >> 40) & 0xFFL),
(byte) ((longValue >> 32) & 0xFFL),
(byte) ((longValue >> 24) & 0xFFL),
(byte) ((longValue >> 16) & 0xFFL),
(byte) ((longValue >> 8) & 0xFFL),
(byte) (longValue & 0xFFL)
};
}
else
{
return new byte[]
{
(byte) ((longValue >> 56) & 0x7FL),
(byte) ((longValue >> 48) & 0xFFL),
(byte) ((longValue >> 40) & 0xFFL),
(byte) ((longValue >> 32) & 0xFFL),
(byte) ((longValue >> 24) & 0xFFL),
(byte) ((longValue >> 16) & 0xFFL),
(byte) ((longValue >> 8) & 0xFFL),
(byte) (longValue & 0xFFL)
};
}
}
}
/**
* Retrieves the long value for this element.
*
* @return The long value for this element.
*/
public long longValue()
{
return longValue;
}
/**
* Decodes the contents of the provided byte array as a long element.
*
* @param elementBytes The byte array to decode as an ASN.1 long element.
*
* @return The decoded ASN.1 long element.
*
* @throws ASN1Exception If the provided array cannot be decoded as a long
* element.
*/
@NotNull()
public static ASN1Long decodeAsLong(@NotNull final byte[] elementBytes)
throws ASN1Exception
{
try
{
int valueStartPos = 2;
int length = (elementBytes[1] & 0x7F);
if (length != elementBytes[1])
{
final int numLengthBytes = length;
length = 0;
for (int i=0; i < numLengthBytes; i++)
{
length <<= 8;
length |= (elementBytes[valueStartPos++] & 0xFF);
}
}
if ((elementBytes.length - valueStartPos) != length)
{
throw new ASN1Exception(ERR_ELEMENT_LENGTH_MISMATCH.get(length,
(elementBytes.length - valueStartPos)));
}
final byte[] value = new byte[length];
System.arraycopy(elementBytes, valueStartPos, value, 0, length);
long longValue;
switch (value.length)
{
case 1:
longValue = (value[0] & 0xFFL);
if ((value[0] & 0x80L) != 0x00L)
{
longValue |= 0xFFFF_FFFF_FFFF_FF00L;
}
break;
case 2:
longValue = ((value[0] & 0xFFL) << 8) | (value[1] & 0xFFL);
if ((value[0] & 0x80L) != 0x00L)
{
longValue |= 0xFFFF_FFFF_FFFF_0000L;
}
break;
case 3:
longValue = ((value[0] & 0xFFL) << 16) | ((value[1] & 0xFFL) << 8) |
(value[2] & 0xFFL);
if ((value[0] & 0x80L) != 0x00L)
{
longValue |= 0xFFFF_FFFF_FF00_0000L;
}
break;
case 4:
longValue = ((value[0] & 0xFFL) << 24) | ((value[1] & 0xFFL) << 16) |
((value[2] & 0xFFL) << 8) | (value[3] & 0xFFL);
if ((value[0] & 0x80L) != 0x00L)
{
longValue |= 0xFFFF_FFFF_0000_0000L;
}
break;
case 5:
longValue = ((value[0] & 0xFFL) << 32) | ((value[1] & 0xFFL) << 24) |
((value[2] & 0xFFL) << 16) | ((value[3] & 0xFFL) << 8) |
(value[4] & 0xFFL);
if ((value[0] & 0x80L) != 0x00L)
{
longValue |= 0xFFFF_FF00_0000_0000L;
}
break;
case 6:
longValue = ((value[0] & 0xFFL) << 40) | ((value[1] & 0xFFL) << 32) |
((value[2] & 0xFFL) << 24) | ((value[3] & 0xFFL) << 16) |
((value[4] & 0xFFL) << 8) | (value[5] & 0xFFL);
if ((value[0] & 0x80L) != 0x00L)
{
longValue |= 0xFFFF_0000_0000_0000L;
}
break;
case 7:
longValue = ((value[0] & 0xFFL) << 48) | ((value[1] & 0xFFL) << 40) |
((value[2] & 0xFFL) << 32) | ((value[3] & 0xFFL) << 24) |
((value[4] & 0xFFL) << 16) | ((value[5] & 0xFFL) << 8) |
(value[6] & 0xFFL);
if ((value[0] & 0x80L) != 0x00L)
{
longValue |= 0xFF00_0000_0000_0000L;
}
break;
case 8:
longValue = ((value[0] & 0xFFL) << 56) | ((value[1] & 0xFFL) << 48) |
((value[2] & 0xFFL) << 40) | ((value[3] & 0xFFL) << 32) |
((value[4] & 0xFFL) << 24) | ((value[5] & 0xFFL) << 16) |
((value[6] & 0xFFL) << 8) | (value[7] & 0xFFL);
break;
default:
throw new ASN1Exception(ERR_LONG_INVALID_LENGTH.get(value.length));
}
return new ASN1Long(elementBytes[0], longValue, value);
}
catch (final ASN1Exception ae)
{
Debug.debugException(ae);
throw ae;
}
catch (final Exception e)
{
Debug.debugException(e);
throw new ASN1Exception(ERR_ELEMENT_DECODE_EXCEPTION.get(e), e);
}
}
/**
* Decodes the provided ASN.1 element as a long element.
*
* @param element The ASN.1 element to be decoded.
*
* @return The decoded ASN.1 long element.
*
* @throws ASN1Exception If the provided element cannot be decoded as a long
* element.
*/
@NotNull()
public static ASN1Long decodeAsLong(@NotNull final ASN1Element element)
throws ASN1Exception
{
long longValue;
final byte[] value = element.getValue();
switch (value.length)
{
case 1:
longValue = (value[0] & 0xFFL);
if ((value[0] & 0x80L) != 0x00L)
{
longValue |= 0xFFFF_FFFF_FFFF_FF00L;
}
break;
case 2:
longValue = ((value[0] & 0xFFL) << 8) | (value[1] & 0xFFL);
if ((value[0] & 0x80L) != 0x00L)
{
longValue |= 0xFFFF_FFFF_FFFF_0000L;
}
break;
case 3:
longValue = ((value[0] & 0xFFL) << 16) | ((value[1] & 0xFFL) << 8) |
(value[2] & 0xFFL);
if ((value[0] & 0x80L) != 0x00L)
{
longValue |= 0xFFFF_FFFF_FF00_0000L;
}
break;
case 4:
longValue = ((value[0] & 0xFFL) << 24) | ((value[1] & 0xFFL) << 16) |
((value[2] & 0xFFL) << 8) | (value[3] & 0xFFL);
if ((value[0] & 0x80L) != 0x00L)
{
longValue |= 0xFFFF_FFFF_0000_0000L;
}
break;
case 5:
longValue = ((value[0] & 0xFFL) << 32) | ((value[1] & 0xFFL) << 24) |
((value[2] & 0xFFL) << 16) | ((value[3] & 0xFFL) << 8) |
(value[4] & 0xFFL);
if ((value[0] & 0x80L) != 0x00L)
{
longValue |= 0xFFFF_FF00_0000_0000L;
}
break;
case 6:
longValue = ((value[0] & 0xFFL) << 40) | ((value[1] & 0xFFL) << 32) |
((value[2] & 0xFFL) << 24) | ((value[3] & 0xFFL) << 16) |
((value[4] & 0xFFL) << 8) | (value[5] & 0xFFL);
if ((value[0] & 0x80L) != 0x00L)
{
longValue |= 0xFFFF_0000_0000_0000L;
}
break;
case 7:
longValue = ((value[0] & 0xFFL) << 48) | ((value[1] & 0xFFL) << 40) |
((value[2] & 0xFFL) << 32) | ((value[3] & 0xFFL) << 24) |
((value[4] & 0xFFL) << 16) | ((value[5] & 0xFFL) << 8) |
(value[6] & 0xFFL);
if ((value[0] & 0x80L) != 0x00L)
{
longValue |= 0xFF00_0000_0000_0000L;
}
break;
case 8:
longValue = ((value[0] & 0xFFL) << 56) | ((value[1] & 0xFFL) << 48) |
((value[2] & 0xFFL) << 40) | ((value[3] & 0xFFL) << 32) |
((value[4] & 0xFFL) << 24) | ((value[5] & 0xFFL) << 16) |
((value[6] & 0xFFL) << 8) | (value[7] & 0xFFL);
break;
default:
throw new ASN1Exception(ERR_LONG_INVALID_LENGTH.get(value.length));
}
return new ASN1Long(element.getType(), longValue, value);
}
/**
* {@inheritDoc}
*/
@Override()
public void toString(@NotNull final StringBuilder buffer)
{
buffer.append(longValue);
}
}