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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.

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/*
 * Copyright 2009-2022 Ping Identity Corporation
 * All Rights Reserved.
 */
/*
 * Copyright 2009-2022 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) 2009-2022 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.protocol;



import com.unboundid.asn1.ASN1Buffer;
import com.unboundid.asn1.ASN1BufferSequence;
import com.unboundid.asn1.ASN1Element;
import com.unboundid.asn1.ASN1OctetString;
import com.unboundid.asn1.ASN1Sequence;
import com.unboundid.asn1.ASN1StreamReader;
import com.unboundid.asn1.ASN1StreamReaderSequence;
import com.unboundid.ldap.sdk.Control;
import com.unboundid.ldap.sdk.ExtendedRequest;
import com.unboundid.ldap.sdk.LDAPException;
import com.unboundid.ldap.sdk.ResultCode;
import com.unboundid.util.Debug;
import com.unboundid.util.InternalUseOnly;
import com.unboundid.util.NotMutable;
import com.unboundid.util.NotNull;
import com.unboundid.util.Nullable;
import com.unboundid.util.StaticUtils;
import com.unboundid.util.ThreadSafety;
import com.unboundid.util.ThreadSafetyLevel;
import com.unboundid.util.Validator;

import static com.unboundid.ldap.protocol.ProtocolMessages.*;



/**
 * This class provides an implementation of an LDAP extended request protocol
 * op.
 */
@InternalUseOnly()
@NotMutable()
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class ExtendedRequestProtocolOp
       implements ProtocolOp
{
  /**
   * The BER type for the OID element.
   */
  public static final byte TYPE_OID = (byte) 0x80;



  /**
   * The BER type for the value element.
   */
  public static final byte TYPE_VALUE = (byte) 0x81;



  /**
   * The serial version UID for this serializable class.
   */
  private static final long serialVersionUID = -5343424210200494377L;



  // The value for this extended request.
  @Nullable private final ASN1OctetString value;

  // The OID for this extended request.
  @NotNull private final String oid;



  /**
   * Creates a new extended request protocol op with the provided information.
   *
   * @param  oid    The OID for this extended request.
   * @param  value  The value for this extended request, or {@code null} if
   *                there should not be a value.
   */
  public ExtendedRequestProtocolOp(@NotNull final String oid,
                                   @Nullable final ASN1OctetString value)
  {
    this.oid = oid;

    if (value == null)
    {
      this.value = null;
    }
    else
    {
      this.value = new ASN1OctetString(TYPE_VALUE, value.getValue());
    }
  }



  /**
   * Creates a new extended request protocol op from the provided extended
   * request object.
   *
   * @param  request  The extended request object to use to create this protocol
   *                  op.
   */
  public ExtendedRequestProtocolOp(@NotNull final ExtendedRequest request)
  {
    oid   = request.getOID();
    value = request.getValue();
  }



  /**
   * Creates a new extended request protocol op read from the provided ASN.1
   * stream reader.
   *
   * @param  reader  The ASN.1 stream reader from which to read the extended
   *                 request protocol op.
   *
   * @throws  LDAPException  If a problem occurs while reading or parsing the
   *                         extended request.
   */
  ExtendedRequestProtocolOp(@NotNull final ASN1StreamReader reader)
       throws LDAPException
  {
    try
    {
      final ASN1StreamReaderSequence opSequence = reader.beginSequence();
      oid = reader.readString();
      Validator.ensureNotNull(oid);

      if (opSequence.hasMoreElements())
      {
        value = new ASN1OctetString(TYPE_VALUE, reader.readBytes());
      }
      else
      {
        value = null;
      }
    }
    catch (final Exception e)
    {
      Debug.debugException(e);

      throw new LDAPException(ResultCode.DECODING_ERROR,
           ERR_EXTENDED_REQUEST_CANNOT_DECODE.get(
                StaticUtils.getExceptionMessage(e)),
           e);
    }
  }



  /**
   * Retrieves the OID for this extended request.
   *
   * @return  The OID for this extended request.
   */
  @NotNull()
  public String getOID()
  {
    return oid;
  }



  /**
   * Retrieves the value for this extended request, if any.
   *
   * @return  The value for this extended request, or {@code null} if there is
   *          no value.
   */
  @Nullable()
  public ASN1OctetString getValue()
  {
    return value;
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  public byte getProtocolOpType()
  {
    return LDAPMessage.PROTOCOL_OP_TYPE_EXTENDED_REQUEST;
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  @NotNull()
  public ASN1Element encodeProtocolOp()
  {
    if (value ==  null)
    {
      return new ASN1Sequence(LDAPMessage.PROTOCOL_OP_TYPE_EXTENDED_REQUEST,
           new ASN1OctetString(TYPE_OID, oid));
    }
    else
    {
      return new ASN1Sequence(LDAPMessage.PROTOCOL_OP_TYPE_EXTENDED_REQUEST,
           new ASN1OctetString(TYPE_OID, oid),
           value);
    }
  }



  /**
   * Decodes the provided ASN.1 element as an extended request protocol op.
   *
   * @param  element  The ASN.1 element to be decoded.
   *
   * @return  The decoded extended request protocol op.
   *
   * @throws  LDAPException  If the provided ASN.1 element cannot be decoded as
   *                         an extended request protocol op.
   */
  @NotNull()
  public static ExtendedRequestProtocolOp decodeProtocolOp(
                     @NotNull final ASN1Element element)
         throws LDAPException
  {
    try
    {
      final ASN1Element[] elements =
           ASN1Sequence.decodeAsSequence(element).elements();
      final String oid =
           ASN1OctetString.decodeAsOctetString(elements[0]).stringValue();

      final ASN1OctetString value;
      if (elements.length == 1)
      {
        value = null;
      }
      else
      {
        value = ASN1OctetString.decodeAsOctetString(elements[1]);
      }

      return new ExtendedRequestProtocolOp(oid, value);
    }
    catch (final Exception e)
    {
      Debug.debugException(e);
      throw new LDAPException(ResultCode.DECODING_ERROR,
           ERR_EXTENDED_REQUEST_CANNOT_DECODE.get(
                StaticUtils.getExceptionMessage(e)),
           e);
    }
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  public void writeTo(@NotNull final ASN1Buffer buffer)
  {
    final ASN1BufferSequence opSequence =
         buffer.beginSequence(LDAPMessage.PROTOCOL_OP_TYPE_EXTENDED_REQUEST);
    buffer.addOctetString(TYPE_OID, oid);

    if (value != null)
    {
      buffer.addOctetString(TYPE_VALUE, value.getValue());
    }
    opSequence.end();
  }



  /**
   * Creates an extended request from this protocol op.
   *
   * @param  controls  The set of controls to include in the extended request.
   *                   It may be empty or {@code null} if no controls should be
   *                   included.
   *
   * @return  The extended request that was created.
   */
  @NotNull()
  public ExtendedRequest toExtendedRequest(@Nullable final Control... controls)
  {
    return new ExtendedRequest(oid, value, controls);
  }



  /**
   * Retrieves a string representation of this protocol op.
   *
   * @return  A string representation of this protocol op.
   */
  @Override()
  @NotNull()
  public String toString()
  {
    final StringBuilder buffer = new StringBuilder();
    toString(buffer);
    return buffer.toString();
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  public void toString(@NotNull final StringBuilder buffer)
  {
    buffer.append("ExtendedRequestProtocolOp(oid='");
    buffer.append(oid);
    buffer.append("')");
  }
}




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