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/*
* Copyright 2022-2024 Ping Identity Corporation
* All Rights Reserved.
*/
/*
* Copyright 2022-2024 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) 2022-2024 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.ldap.sdk.unboundidds.logs.v2.syntax;
import java.text.DecimalFormat;
import com.unboundid.util.ByteStringBuffer;
import com.unboundid.util.Debug;
import com.unboundid.util.NotNull;
import com.unboundid.util.ThreadSafety;
import com.unboundid.util.ThreadSafetyLevel;
import com.unboundid.util.json.JSONBuffer;
import static com.unboundid.ldap.sdk.unboundidds.logs.v2.syntax.
LogSyntaxMessages.*;
/**
* This class defines a log field syntax for values that are floating-point
* numbers. This syntax does not support redacting or tokenizing individual
* components within the numbers. Redacted floating-point values will have a
* string representation of "-999999.999999". Tokenized floating-point string
* values will have a string representation of "-999999." followed by six digits
* that correspond to a token value generated from the actual value.
*
*
* NOTE: This class, and other classes within the
* {@code com.unboundid.ldap.sdk.unboundidds} package structure, are only
* supported for use against Ping Identity, UnboundID, and
* Nokia/Alcatel-Lucent 8661 server products. These classes provide support
* for proprietary functionality or for external specifications that are not
* considered stable or mature enough to be guaranteed to work in an
* interoperable way with other types of LDAP servers.
*
*/
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class FloatingPointLogFieldSyntax
extends LogFieldSyntax
{
/**
* The name for this syntax.
*/
@NotNull public static final String SYNTAX_NAME = "floating-point";
/**
* The string representation that will be used for a floating-point value that
* is completely redacted.
*/
@NotNull private static final String REDACTED_FLOATING_POINT_STRING =
"-999999.999999";
/**
* A singleton instance of this log field syntax.
*/
@NotNull private static final FloatingPointLogFieldSyntax INSTANCE =
new FloatingPointLogFieldSyntax();
// Thread-local decimal formatters to use for formatting string
// representations.
@NotNull private final ThreadLocal threadLocalFormatters;
/**
* Creates a new instance of this log field syntax implementation.
*/
private FloatingPointLogFieldSyntax()
{
super(100);
threadLocalFormatters = new ThreadLocal<>();
}
/**
* Retrieves a singleton instance of this log field syntax.
*
* @return A singleton instance of this log field syntax.
*/
@NotNull()
public static FloatingPointLogFieldSyntax getInstance()
{
return INSTANCE;
}
/**
* {@inheritDoc}
*/
@Override()
@NotNull()
public String getSyntaxName()
{
return SYNTAX_NAME;
}
/**
* Appends a sanitized string representation of the provided float to the
* given buffer.
*
* @param value The value to be appended.
* @param buffer The buffer to which the string representation should be
* appended. It must not be {@code null}.
*/
public void valueToSanitizedString(final float value,
@NotNull final ByteStringBuffer buffer)
{
buffer.append(getDecimalFormatter().format(value));
}
/**
* Appends a sanitized string representation of the provided double to the
* given buffer.
*
* @param value The value to be appended.
* @param buffer The buffer to which the string representation should be
* appended. It must not be {@code null}.
*/
public void valueToSanitizedString(final double value,
@NotNull final ByteStringBuffer buffer)
{
buffer.append(getDecimalFormatter().format(value));
}
/**
* {@inheritDoc}
*/
@Override()
public void valueToSanitizedString(@NotNull final Double value,
@NotNull final ByteStringBuffer buffer)
{
buffer.append(getDecimalFormatter().format(value));
}
/**
* Retrieves a decimal formatter to use for formatting the string
* representations of floating-point values.
*
* @return A decimal formatter to use for formatting the string
* representations of floating-point values.
*/
@NotNull()
private DecimalFormat getDecimalFormatter()
{
DecimalFormat formatter = threadLocalFormatters.get();
if (formatter == null)
{
formatter = new DecimalFormat("0.000");
threadLocalFormatters.set(formatter);
}
return formatter;
}
/**
* {@inheritDoc}
*/
@Override()
public void logSanitizedFieldToTextFormattedLog(
@NotNull final String fieldName,
@NotNull final Double fieldValue,
@NotNull final ByteStringBuffer buffer)
{
buffer.append(' ');
buffer.append(fieldName);
buffer.append('=');
buffer.append(getDecimalFormatter().format(fieldValue));
}
/**
* {@inheritDoc}
*/
@Override()
public void logSanitizedFieldToJSONFormattedLog(
@NotNull final String fieldName,
@NotNull final Double fieldValue,
@NotNull final JSONBuffer buffer)
{
buffer.appendNumber(fieldName, getDecimalFormatter().format(fieldValue));
}
/**
* {@inheritDoc}
*/
@Override()
public void logSanitizedValueToJSONFormattedLog(
@NotNull final Double value,
@NotNull final JSONBuffer buffer)
{
buffer.appendNumber(getDecimalFormatter().format(value));
}
/**
* {@inheritDoc}
*/
@Override()
@NotNull()
public Double parseValue(@NotNull final String valueString)
throws RedactedValueException, TokenizedValueException,
LogSyntaxException
{
try
{
return Double.parseDouble(valueString);
}
catch (final Exception e)
{
Debug.debugException(e);
if (valueStringIncludesRedactedComponent(valueString))
{
throw new RedactedValueException(
ERR_FP_LOG_SYNTAX_CANNOT_PARSE_REDACTED.get(), e);
}
else if (valueStringIncludesTokenizedComponent(valueString))
{
throw new TokenizedValueException(
ERR_FP_LOG_SYNTAX_CANNOT_PARSE_TOKENIZED.get(), e);
}
else
{
throw new LogSyntaxException(
ERR_FP_LOG_SYNTAX_CANNOT_PARSE.get(), e);
}
}
}
/**
* {@inheritDoc}
*/
@Override()
public boolean valueStringIsCompletelyRedacted(
@NotNull final String valueString)
{
return valueString.equals(REDACTED_STRING) ||
valueString.equals(REDACTED_FLOATING_POINT_STRING);
}
/**
* {@inheritDoc}
*/
@Override()
public boolean completelyRedactedValueConformsToSyntax()
{
return true;
}
/**
* {@inheritDoc}
*/
@Override()
public void redactEntireValue(@NotNull final ByteStringBuffer buffer)
{
buffer.append(REDACTED_FLOATING_POINT_STRING);
}
/**
* {@inheritDoc}
*/
@Override()
public void logCompletelyRedactedFieldToTextFormattedLog(
@NotNull final String fieldName,
@NotNull final ByteStringBuffer buffer)
{
buffer.append(' ');
buffer.append(fieldName);
buffer.append('=');
buffer.append(REDACTED_FLOATING_POINT_STRING);
}
/**
* {@inheritDoc}
*/
@Override()
public void logCompletelyRedactedFieldToJSONFormattedLog(
@NotNull final String fieldName,
@NotNull final JSONBuffer buffer)
{
buffer.appendNumber(fieldName, REDACTED_FLOATING_POINT_STRING);
}
/**
* {@inheritDoc}
*/
@Override()
public void logCompletelyRedactedValueToJSONFormattedLog(
@NotNull final JSONBuffer buffer)
{
buffer.appendNumber(REDACTED_FLOATING_POINT_STRING);
}
/**
* {@inheritDoc}
*/
@Override()
public boolean supportsRedactedComponents()
{
return false;
}
/**
* {@inheritDoc}
*/
@Override()
public boolean valueStringIncludesRedactedComponent(
@NotNull final String valueString)
{
return valueStringIsCompletelyRedacted(valueString);
}
/**
* {@inheritDoc}
*/
@Override()
public boolean valueWithRedactedComponentsConformsToSyntax()
{
return true;
}
/**
* {@inheritDoc}
*/
@Override()
public void logRedactedComponentsFieldToTextFormattedLog(
@NotNull final String fieldName,
@NotNull final Double fieldValue,
@NotNull final ByteStringBuffer buffer)
{
logCompletelyRedactedFieldToTextFormattedLog(fieldName, buffer);
}
/**
* {@inheritDoc}
*/
@Override()
public void logRedactedComponentsFieldToJSONFormattedLog(
@NotNull final String fieldName,
@NotNull final Double fieldValue,
@NotNull final JSONBuffer buffer)
{
logCompletelyRedactedFieldToJSONFormattedLog(fieldName, buffer);
}
/**
* {@inheritDoc}
*/
@Override()
public void logRedactedComponentsValueToJSONFormattedLog(
@NotNull final Double value,
@NotNull final JSONBuffer buffer)
{
logCompletelyRedactedValueToJSONFormattedLog(buffer);
}
/**
* {@inheritDoc}
*/
@Override()
public boolean valueStringIsCompletelyTokenized(
@NotNull final String valueString)
{
if (super.valueStringIsCompletelyTokenized(valueString))
{
return true;
}
return ((valueString.length() == 14) &&
valueString.startsWith("-999999.") &&
(! valueString.equals(REDACTED_FLOATING_POINT_STRING)));
}
/**
* {@inheritDoc}
*/
@Override()
public boolean completelyTokenizedValueConformsToSyntax()
{
return true;
}
/**
* {@inheritDoc}
*/
@Override()
public void tokenizeEntireValue(@NotNull final Double value,
@NotNull final byte[] pepper,
@NotNull final ByteStringBuffer buffer)
{
// Get the bytes that comprise the bitwise encoding of the provided value.
final long valueBitsLong = Double.doubleToLongBits(value);
final byte[] valueBytes =
{
(byte) ((valueBitsLong >> 56) & 0xFFL),
(byte) ((valueBitsLong >> 48) & 0xFFL),
(byte) ((valueBitsLong >> 40) & 0xFFL),
(byte) ((valueBitsLong >> 32) & 0xFFL),
(byte) ((valueBitsLong >> 24) & 0xFFL),
(byte) ((valueBitsLong >> 16) & 0xFFL),
(byte) ((valueBitsLong >> 8) & 0xFFL),
(byte) (valueBitsLong & 0xFFL)
};
// Concatenate the value bytes and the pepper and compute a SHA-256 digest
// of the result.
final byte[] tokenDigest;
final ByteStringBuffer tempBuffer = getTemporaryBuffer();
try
{
tempBuffer.append(valueBytes);
tempBuffer.append(pepper);
tokenDigest = sha256(tempBuffer);
}
finally
{
releaseTemporaryBuffer(tempBuffer);
}
// Use the first four bytes of the token digest to generate a positive
// integer whose string representation is exactly ten digits long. To do
// this, AND the first byte with 0x7F (which will make it positive) and OR
// the first byte with 0x40 (which will ensure that the value will be
// greater than or equal to 1073741824, and we already know that int
// values cannot exceed 2147483647, so that means it will be exactly ten
// digits).
final int fractionalDigitsInt =
(((tokenDigest[0] & 0x7F) | 0x40) << 24) |
((tokenDigest[1] & 0xFF) << 16) |
((tokenDigest[2] & 0xFF) << 8) |
(tokenDigest[3] & 0xFF);
// Take the last six digits of the string representation of the generated
// integer.
String fractionalDigits = String.valueOf(fractionalDigitsInt).substring(4);
// Make sure that the resulting six-digit string is not "999999", so that
// the tokenized value won't be confused with a redacted value.
if (fractionalDigits.equals("999999"))
{
fractionalDigits = "000000";
}
// Finally, generate the tokenized representation. It will be "-999999."
// followed by the fractional digits generated above.
buffer.append("-999999.");
buffer.append(fractionalDigits);
}
/**
* {@inheritDoc}
*/
@Override()
public void logCompletelyTokenizedFieldToTextFormattedLog(
@NotNull final String fieldName,
@NotNull final Double fieldValue,
@NotNull final byte[] pepper,
@NotNull final ByteStringBuffer buffer)
{
buffer.append(' ');
buffer.append(fieldName);
buffer.append('=');
tokenizeEntireValue(fieldValue, pepper, buffer);
}
/**
* {@inheritDoc}
*/
@Override()
public void logCompletelyTokenizedFieldToJSONFormattedLog(
@NotNull final String fieldName,
@NotNull final Double fieldValue,
@NotNull final byte[] pepper,
@NotNull final JSONBuffer buffer)
{
buffer.appendNumber(fieldName, tokenizeEntireValue(fieldValue, pepper));
}
/**
* {@inheritDoc}
*/
@Override()
public void logCompletelyTokenizedValueToJSONFormattedLog(
@NotNull final Double value,
@NotNull final byte[] pepper,
@NotNull final JSONBuffer buffer)
{
buffer.appendNumber(tokenizeEntireValue(value, pepper));
}
/**
* {@inheritDoc}
*/
@Override()
public boolean supportsTokenizedComponents()
{
return false;
}
/**
* {@inheritDoc}
*/
@Override()
public boolean valueStringIncludesTokenizedComponent(
@NotNull final String valueString)
{
return valueStringIsCompletelyTokenized(valueString);
}
/**
* {@inheritDoc}
*/
@Override()
public boolean valueWithTokenizedComponentsConformsToSyntax()
{
return true;
}
/**
* {@inheritDoc}
*/
@Override()
public void logTokenizedComponentsFieldToTextFormattedLog(
@NotNull final String fieldName,
@NotNull final Double fieldValue,
@NotNull final byte[] pepper,
@NotNull final ByteStringBuffer buffer)
{
logCompletelyTokenizedFieldToTextFormattedLog(fieldName, fieldValue, pepper,
buffer);
}
/**
* {@inheritDoc}
*/
@Override()
public void logTokenizedComponentsFieldToJSONFormattedLog(
@NotNull final String fieldName,
@NotNull final Double fieldValue,
@NotNull final byte[] pepper,
@NotNull final JSONBuffer buffer)
{
logCompletelyTokenizedFieldToJSONFormattedLog(fieldName, fieldValue, pepper,
buffer);
}
/**
* {@inheritDoc}
*/
@Override()
public void logTokenizedComponentsValueToJSONFormattedLog(
@NotNull final Double value,
@NotNull final byte[] pepper,
@NotNull final JSONBuffer buffer)
{
logCompletelyTokenizedValueToJSONFormattedLog(value, pepper, buffer);
}
}
