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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 Commercial Edition of the LDAP SDK, which includes all of the general-purpose functionality contained in the Standard Edition, plus additional functionality specific to UnboundID server products.
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/*
 * Copyright 2012-2016 UnboundID Corp.
 * All Rights Reserved.
 */
/*
 * Copyright (C) 2015-2016 UnboundID Corp.
 *
 * 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.extensions;



import com.unboundid.asn1.ASN1Element;
import com.unboundid.asn1.ASN1OctetString;
import com.unboundid.asn1.ASN1Sequence;
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.NotMutable;
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.sdk.unboundidds.extensions.ExtOpMessages.*;



/**
 * 
 *   NOTE:  This class is part of the Commercial Edition of the UnboundID
 *   LDAP SDK for Java.  It is not available for use in applications that
 *   include only the Standard Edition of the LDAP SDK, and is not supported for
 *   use in conjunction with non-UnboundID products.
 * 
 * This class provides an implementation of an extended request which may be
 * used to validate a TOTP password for a user.  Note that this should not be
 * used as an alternative to authentication because it does not perform password
 * policy processing.  Rather, this extended operation should be used only to
 * obtain additional assurance about the identity of a user that has already
 * been authenticated through some other means.
 * 


 * The extended request has an OID of 1.3.6.1.4.1.30221.2.6.15 and a value with
 * the following encoding:
 *  *   ValidateTOTPPasswordRequest ::= SEQUENCE {
 *        userDN           [0] LDAPDN,
 *        totpPassword     [1] OCTET STRING,
 *        ... }
 * 
 */
@NotMutable()
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class ValidateTOTPPasswordExtendedRequest
       extends ExtendedRequest
{
  /**
   * The OID (1.3.6.1.4.1.30221.2.6.15) for the validate TOTP password extended
   * request.
   */
  public static final String VALIDATE_TOTP_PASSWORD_REQUEST_OID =
       "1.3.6.1.4.1.30221.2.6.15";



  /**
   * The BER type for the user DN value element.
   */
  private static final byte TYPE_USER_DN = (byte) 0x80;



  /**
   * The BER type for the TOTP password value element.
   */
  private static final byte TYPE_TOTP_PASSWORD = (byte) 0x81;



  /**
   * The serial version UID for this serializable class.
   */
  private static final long serialVersionUID = -4610279612454559569L;



  // The DN of the user for whom to validate the TOTP password.
  private final String userDN;

  // The TOTP password to validate.
  private final String totpPassword;




  /**
   * Creates a new validate TOTP password extended request with the provided
   * information.
   *
   * @param  userDN        The DN of the user for whom to validate the TOTP
   *                       password.
   * @param  totpPassword  The TOTP password to validate.
   * @param  controls      The set of controls to include in the request.
   */
  public ValidateTOTPPasswordExtendedRequest(final String userDN,
                                             final String totpPassword,
                                             final Control... controls)
  {
    super(VALIDATE_TOTP_PASSWORD_REQUEST_OID,
         encodeValue(userDN, totpPassword), controls);

    Validator.ensureNotNull(userDN);
    Validator.ensureNotNull(totpPassword);

    this.userDN       = userDN;
    this.totpPassword = totpPassword;
  }



  /**
   * Creates a new validate TOTP password extended request from the provided
   * generic extended request.
   *
   * @param  extendedRequest  The generic extended request to parse as a
   *                          validate TOTP extended request.
   *
   * @throws  LDAPException  If a problem is encountered while attempting to
   *                         parse the provided extended request.
   */
  public ValidateTOTPPasswordExtendedRequest(
              final ExtendedRequest extendedRequest)
         throws LDAPException
  {
    super(extendedRequest);

    final ASN1OctetString value = extendedRequest.getValue();
    if (value == null)
    {
      throw new LDAPException(ResultCode.DECODING_ERROR,
           ERR_VALIDATE_TOTP_REQUEST_MISSING_VALUE.get());
    }

    try
    {
      final ASN1Element[] elements =
           ASN1Sequence.decodeAsSequence(value.getValue()).elements();
      userDN = ASN1OctetString.decodeAsOctetString(elements[0]).stringValue();
      totpPassword =
           ASN1OctetString.decodeAsOctetString(elements[1]).stringValue();
    }
    catch (final Exception e)
    {
      Debug.debugException(e);
      throw new LDAPException(ResultCode.DECODING_ERROR,
           ERR_VALIDATE_TOTP_REQUEST_MALFORMED_VALUE.get(
                StaticUtils.getExceptionMessage(e)),
           e);
    }
  }



  /**
   * Encodes the provided information into a value suitable for use as the value
   * for this extended request.
   *
   * @param  userDN        The DN of the user for whom to validate the TOTP
   *                       password.
   * @param  totpPassword  The TOTP password to validate.
   *
   * @return  The ASN.1 octet string containing the encoded value.
   */
  private static ASN1OctetString encodeValue(final String userDN,
                                             final String totpPassword)
  {
    return new ASN1OctetString(new ASN1Sequence(
         new ASN1OctetString(TYPE_USER_DN, userDN),
         new ASN1OctetString(TYPE_TOTP_PASSWORD, totpPassword)).encode());
  }



  /**
   * Retrieves the DN of the user for whom to validate the TOTP password.
   *
   * @return  The DN of the user for whom to validate the TOTP password.
   */
  public String getUserDN()
  {
    return userDN;
  }



  /**
   * Retrieves the TOTP password to validate.
   *
   * @return  The TOTP password to validate.
   */
  public String getTOTPPassword()
  {
    return totpPassword;
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  public ValidateTOTPPasswordExtendedRequest duplicate()
  {
    return duplicate(getControls());
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  public ValidateTOTPPasswordExtendedRequest duplicate(
              final Control[] controls)
  {
    final ValidateTOTPPasswordExtendedRequest r =
         new ValidateTOTPPasswordExtendedRequest(userDN, totpPassword,
              controls);
    r.setResponseTimeoutMillis(getResponseTimeoutMillis(null));
    return r;
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  public String getExtendedRequestName()
  {
    return INFO_EXTENDED_REQUEST_NAME_VALIDATE_TOTP.get();
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  public void toString(final StringBuilder buffer)
  {
    buffer.append("ValidateTOTPPasswordExtendedRequest(userDN='");
    buffer.append(userDN);
    buffer.append('\'');

    final Control[] controls = getControls();
    if (controls.length > 0)
    {
      buffer.append(", controls={");
      for (int i=0; i < controls.length; i++)
      {
        if (i > 0)
        {
          buffer.append(", ");
        }

        buffer.append(controls[i]);
      }
      buffer.append('}');
    }

    buffer.append(')');
  }
}