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				|  |  | -/* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
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				|  |  | - *
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				|  |  | - * Licensed under the Apache License, Version 2.0 (the "License");
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				|  |  | - * you may not use this file except in compliance with the License.
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				|  |  | - * You may obtain a copy of the License at
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				|  |  | - *
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				|  |  | - *     http://www.apache.org/licenses/LICENSE-2.0
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				|  |  | - *
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				|  |  | - * Unless required by applicable law or agreed to in writing, software
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				|  |  | - * distributed under the License is distributed on an "AS IS" BASIS,
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				|  |  | - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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				|  |  | - * See the License for the specific language governing permissions and
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				|  |  | - * limitations under the License.
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				|  |  | - */
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				|  |  | -
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				|  |  | -package org.acegisecurity.providers.ldap.authenticator.controls;
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				|  |  | -
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				|  |  | -import netscape.ldap.ber.stream.BERChoice;
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				|  |  | -import netscape.ldap.ber.stream.BERElement;
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				|  |  | -import netscape.ldap.ber.stream.BEREnumerated;
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				|  |  | -import netscape.ldap.ber.stream.BERInteger;
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				|  |  | -
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				|  |  | -//import com.novell.ldap.asn1.LBERDecoder;
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				|  |  | -//import com.novell.ldap.asn1.ASN1Sequence;
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				|  |  | -//import com.novell.ldap.asn1.ASN1Tagged;
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				|  |  | -//import com.novell.ldap.asn1.ASN1OctetString;
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				|  |  | -import netscape.ldap.ber.stream.BERSequence;
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				|  |  | -import netscape.ldap.ber.stream.BERTag;
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				|  |  | -import netscape.ldap.ber.stream.BERTagDecoder;
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				|  |  | -
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				|  |  | -import org.acegisecurity.ldap.LdapDataAccessException;
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				|  |  | -
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				|  |  | -import org.apache.commons.logging.Log;
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				|  |  | -import org.apache.commons.logging.LogFactory;
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				|  |  | -
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				|  |  | -import java.io.ByteArrayInputStream;
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				|  |  | -import java.io.IOException;
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				|  |  | -import java.io.InputStream;
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				|  |  | -
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				|  |  | -
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				|  |  | -/**
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				|  |  | - * Represent the response control received when a <tt>PasswordPolicyControl</tt> is used when binding to a
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				|  |  | - * directory. Currently tested with the OpenLDAP 2.3.19 implementation of the LDAP Password Policy Draft.  It extends
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				|  |  | - * the request control with the control specific data. This is accomplished by the properties timeBeforeExpiration,
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				|  |  | - * graceLoginsRemaining and errorCodes. getEncodedValue returns the unchanged value of the response control as a byte
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				|  |  | - * array.
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				|  |  | - *
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				|  |  | - * @author Stefan Zoerner
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				|  |  | - * @author Luke Taylor
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				|  |  | - * @version $Id$
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				|  |  | - *
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				|  |  | - * @see PasswordPolicyControl
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				|  |  | - * @see <a href="http://www.ibm.com/developerworks/tivoli/library/t-ldap-controls/">Stefan Zoerner's IBM developerworks
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				|  |  | - *      article on LDAP controls.</a>
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				|  |  | - */
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				|  |  | -public class PasswordPolicyResponseControl extends PasswordPolicyControl {
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				|  |  | -    //~ Static fields/initializers =====================================================================================
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				|  |  | -
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				|  |  | -    private static final Log logger = LogFactory.getLog(PasswordPolicyResponseControl.class);
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				|  |  | -    public static final int ERROR_NONE = -1;
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				|  |  | -    public static final int ERROR_PASSWORD_EXPIRED = 0;
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				|  |  | -    public static final int ERROR_ACCOUNT_LOCKED = 1;
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				|  |  | -    public static final int WARNINGS_DEFAULT = -1;
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				|  |  | -    private static final String[] errorText = {
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				|  |  | -            "password expired", "account locked", "change after reset", "password mod not allowed",
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				|  |  | -            "must supply old password", "invalid password syntax", "password too short", "password too young",
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				|  |  | -            "password in history"
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				|  |  | -        };
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				|  |  | -
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				|  |  | -    //~ Instance fields ================================================================================================
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				|  |  | -
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				|  |  | -    private byte[] encodedValue;
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				|  |  | -    private int errorCode = ERROR_NONE;
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				|  |  | -    private int graceLoginsRemaining = WARNINGS_DEFAULT;
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				|  |  | -    private int timeBeforeExpiration = WARNINGS_DEFAULT;
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				|  |  | -
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				|  |  | -    //~ Constructors ===================================================================================================
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				|  |  | -
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				|  |  | -    public PasswordPolicyResponseControl(byte[] encodedValue) {
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				|  |  | -        this.encodedValue = encodedValue;
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				|  |  | -
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				|  |  | -        //PPolicyDecoder decoder = new JLdapDecoder();
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				|  |  | -        PPolicyDecoder decoder = new NetscapeDecoder();
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				|  |  | -
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				|  |  | -        try {
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				|  |  | -            decoder.decode();
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				|  |  | -        } catch (IOException e) {
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				|  |  | -            throw new LdapDataAccessException("Failed to parse control value", e);
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				|  |  | -        }
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				|  |  | -    }
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				|  |  | -
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				|  |  | -    //~ Methods ========================================================================================================
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				|  |  | -
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				|  |  | -    /**
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				|  |  | -     * Returns the unchanged value of the response control.  Returns the unchanged value of the response
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				|  |  | -     * control as byte array.
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				|  |  | -     *
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				|  |  | -     * @return DOCUMENT ME!
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				|  |  | -     */
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				|  |  | -    public byte[] getEncodedValue() {
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				|  |  | -        return encodedValue;
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				|  |  | -    }
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				|  |  | -
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				|  |  | -    /**
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				|  |  | -     * Returns the error code, or ERROR_NONE, if no error is present.
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				|  |  | -     *
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				|  |  | -     * @return the error code (0-8), or ERROR_NONE
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				|  |  | -     */
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				|  |  | -    public int getErrorCode() {
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				|  |  | -        return errorCode;
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				|  |  | -    }
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				|  |  | -
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				|  |  | -    /**
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				|  |  | -     * Decodes the Ber encoded control data. The ASN.1 value of the control data is:<pre>
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				|  |  | -     *    PasswordPolicyResponseValue ::= SEQUENCE {       warning [0] CHOICE {
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				|  |  | -     *           timeBeforeExpiration [0] INTEGER (0 .. maxInt),
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				|  |  | -     *           graceAuthNsRemaining [1] INTEGER (0 .. maxInt) } OPTIONAL,       error   [1] ENUMERATED {
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				|  |  | -     *           passwordExpired             (0),          accountLocked               (1),
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				|  |  | -     *           changeAfterReset            (2),          passwordModNotAllowed       (3),
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				|  |  | -     *           mustSupplyOldPassword       (4),          insufficientPasswordQuality (5),
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				|  |  | -     *           passwordTooShort            (6),          passwordTooYoung            (7),
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				|  |  | -     *           passwordInHistory           (8) } OPTIONAL }</pre>
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				|  |  | -     *
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				|  |  | -     * @return DOCUMENT ME!
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				|  |  | -     */
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				|  |  | -    /**
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				|  |  | -     * Returns the graceLoginsRemaining.
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				|  |  | -     *
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				|  |  | -     * @return Returns the graceLoginsRemaining.
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				|  |  | -     */
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				|  |  | -    public int getGraceLoginsRemaining() {
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				|  |  | -        return graceLoginsRemaining;
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				|  |  | -    }
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				|  |  | -
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				|  |  | -    /**
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				|  |  | -     * Returns the timeBeforeExpiration.
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				|  |  | -     *
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				|  |  | -     * @return Returns the time before expiration in seconds
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				|  |  | -     */
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				|  |  | -    public int getTimeBeforeExpiration() {
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				|  |  | -        return timeBeforeExpiration;
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				|  |  | -    }
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				|  |  | -
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				|  |  | -    /**
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				|  |  | -     * Checks whether an error is present.
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				|  |  | -     *
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				|  |  | -     * @return true, if an error is present
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				|  |  | -     */
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				|  |  | -    public boolean hasError() {
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				|  |  | -        return this.getErrorCode() != ERROR_NONE;
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				|  |  | -    }
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				|  |  | -
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				|  |  | -    /**
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				|  |  | -     * Checks whether a warning is present.
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				|  |  | -     *
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				|  |  | -     * @return true, if a warning is present
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				|  |  | -     */
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				|  |  | -    public boolean hasWarning() {
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				|  |  | -        return (graceLoginsRemaining != WARNINGS_DEFAULT) || (timeBeforeExpiration != WARNINGS_DEFAULT);
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				|  |  | -    }
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				|  |  | -
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				|  |  | -    public boolean isExpired() {
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				|  |  | -        return errorCode == ERROR_PASSWORD_EXPIRED;
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				|  |  | -    }
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				|  |  | -
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				|  |  | -    /**
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				|  |  | -     * Determines whether an account locked error has been returned.
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				|  |  | -     *
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				|  |  | -     * @return true if the account is locked.
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				|  |  | -     */
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				|  |  | -    public boolean isLocked() {
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				|  |  | -        return errorCode == ERROR_ACCOUNT_LOCKED;
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				|  |  | -    }
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				|  |  | -
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				|  |  | -    /**
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				|  |  | -     * Create a textual representation containing error and warning messages, if any are present.
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				|  |  | -     *
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				|  |  | -     * @return error and warning messages
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				|  |  | -     */
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				|  |  | -    public String toString() {
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				|  |  | -        StringBuffer sb = new StringBuffer("PasswordPolicyResponseControl");
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				|  |  | -
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				|  |  | -        if (hasError()) {
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				|  |  | -            sb.append(", error: ").append(errorText[errorCode]);
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				|  |  | -        }
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				|  |  | -
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				|  |  | -        if (graceLoginsRemaining != WARNINGS_DEFAULT) {
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				|  |  | -            sb.append(", warning: ").append(graceLoginsRemaining).append(" grace logins remain");
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				|  |  | -        }
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				|  |  | -
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				|  |  | -        if (timeBeforeExpiration != WARNINGS_DEFAULT) {
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				|  |  | -            sb.append(", warning: time before expiration is ").append(timeBeforeExpiration);
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				|  |  | -        }
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				|  |  | -
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				|  |  | -        if (!hasError() && !hasWarning()) {
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				|  |  | -            sb.append(" (no error, no warning)");
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				|  |  | -        }
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				|  |  | -
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				|  |  | -        return sb.toString();
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				|  |  | -    }
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				|  |  | -
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				|  |  | -    //~ Inner Interfaces ===============================================================================================
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				|  |  | -
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				|  |  | -    private interface PPolicyDecoder {
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				|  |  | -        void decode() throws IOException;
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				|  |  | -    }
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				|  |  | -
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				|  |  | -    //~ Inner Classes ==================================================================================================
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				|  |  | -
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				|  |  | -    /**
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				|  |  | -     * Decoder based on Netscape ldapsdk library
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				|  |  | -     */
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				|  |  | -    private class NetscapeDecoder implements PPolicyDecoder {
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				|  |  | -        public void decode() throws IOException {
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				|  |  | -            int[] bread = {0};
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				|  |  | -            BERSequence seq = (BERSequence) BERElement.getElement(new SpecificTagDecoder(),
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				|  |  | -                    new ByteArrayInputStream(encodedValue), bread);
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				|  |  | -
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				|  |  | -            int size = seq.size();
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				|  |  | -
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				|  |  | -            if (logger.isDebugEnabled()) {
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				|  |  | -                logger.debug("PasswordPolicyResponse, ASN.1 sequence has " + size + " elements");
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				|  |  | -            }
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				|  |  | -
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				|  |  | -            for (int i = 0; i < seq.size(); i++) {
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				|  |  | -                BERTag elt = (BERTag) seq.elementAt(i);
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				|  |  | -
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				|  |  | -                int tag = elt.getTag() & 0x1F;
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				|  |  | -
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				|  |  | -                if (tag == 0) {
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				|  |  | -                    BERChoice warning = (BERChoice) elt.getValue();
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				|  |  | -
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				|  |  | -                    BERTag content = (BERTag) warning.getValue();
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				|  |  | -                    int value = ((BERInteger) content.getValue()).getValue();
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				|  |  | -
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				|  |  | -                    if ((content.getTag() & 0x1F) == 0) {
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				|  |  | -                        timeBeforeExpiration = value;
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				|  |  | -                    } else {
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				|  |  | -                        graceLoginsRemaining = value;
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				|  |  | -                    }
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				|  |  | -                } else if (tag == 1) {
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				|  |  | -                    BEREnumerated error = (BEREnumerated) elt.getValue();
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				|  |  | -                    errorCode = error.getValue();
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				|  |  | -                }
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				|  |  | -            }
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				|  |  | -        }
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				|  |  | -
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				|  |  | -        class SpecificTagDecoder extends BERTagDecoder {
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				|  |  | -            /** Allows us to remember which of the two options we're decoding */
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				|  |  | -            private Boolean inChoice = null;
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				|  |  | -
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				|  |  | -            public BERElement getElement(BERTagDecoder decoder, int tag, InputStream stream, int[] bytesRead,
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				|  |  | -                boolean[] implicit) throws IOException {
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				|  |  | -                tag &= 0x1F;
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				|  |  | -                implicit[0] = false;
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				|  |  | -
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				|  |  | -                if (tag == 0) {
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				|  |  | -                    // Either the choice or the time before expiry within it
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				|  |  | -                    if (inChoice == null) {
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				|  |  | -                        setInChoice(true);
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				|  |  | -
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				|  |  | -                        // Read the choice length from the stream (ignored)
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				|  |  | -                        BERElement.readLengthOctets(stream, bytesRead);
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				|  |  | -
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				|  |  | -                        int[] componentLength = new int[1];
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				|  |  | -                        BERElement choice = new BERChoice(decoder, stream, componentLength);
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				|  |  | -                        bytesRead[0] += componentLength[0];
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				|  |  | -
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				|  |  | -                        // inChoice = null;
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				|  |  | -                        return choice;
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				|  |  | -                    } else {
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				|  |  | -                        // Must be time before expiry
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				|  |  | -                        return new BERInteger(stream, bytesRead);
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				|  |  | -                    }
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				|  |  | -                } else if (tag == 1) {
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				|  |  | -                    // Either the graceLogins or the error enumeration.
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				|  |  | -                    if (inChoice == null) {
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				|  |  | -                        // The enumeration
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				|  |  | -                        setInChoice(false);
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				|  |  | -
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				|  |  | -                        return new BEREnumerated(stream, bytesRead);
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				|  |  | -                    } else {
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				|  |  | -                        if (inChoice.booleanValue()) {
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				|  |  | -                            // graceLogins
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				|  |  | -                            return new BERInteger(stream, bytesRead);
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				|  |  | -                        }
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				|  |  | -                    }
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				|  |  | -                }
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				|  |  | -
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				|  |  | -                throw new LdapDataAccessException("Unexpected tag " + tag);
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				|  |  | -            }
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				|  |  | -
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				|  |  | -            private void setInChoice(boolean inChoice) {
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				|  |  | -                this.inChoice = new Boolean(inChoice);
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				|  |  | -            }
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				|  |  | -        }
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				|  |  | -    }
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				|  |  | -
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				|  |  | -/** Decoder based on the OpenLDAP/Novell JLDAP library */
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				|  |  | -
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				|  |  | -//    private class JLdapDecoder implements PPolicyDecoder {
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				|  |  | -//
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				|  |  | -//        public void decode() throws IOException {
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				|  |  | -//
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				|  |  | -//            LBERDecoder decoder = new LBERDecoder();
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				|  |  | -//
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				|  |  | -//            ASN1Sequence seq = (ASN1Sequence)decoder.decode(encodedValue);
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				|  |  | -//
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				|  |  | -//            if(seq == null) {
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				|  |  | -//
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				|  |  | -//            }
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				|  |  | -//
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				|  |  | -//            int size = seq.size();
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				|  |  | -//
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				|  |  | -//            if(logger.isDebugEnabled()) {
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				|  |  | -//                logger.debug("PasswordPolicyResponse, ASN.1 sequence has " +
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				|  |  | -//                        size + " elements");
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				|  |  | -//            }
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				|  |  | -//
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				|  |  | -//            for(int i=0; i < size; i++) {
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				|  |  | -//
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				|  |  | -//                ASN1Tagged taggedObject = (ASN1Tagged)seq.get(i);
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				|  |  | -//
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				|  |  | -//                int tag = taggedObject.getIdentifier().getTag();
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				|  |  | -//
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				|  |  | -//                ASN1OctetString value = (ASN1OctetString)taggedObject.taggedValue();
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				|  |  | -//                byte[] content = value.byteValue();
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				|  |  | -//
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				|  |  | -//                if(tag == 0) {
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				|  |  | -//                    parseWarning(content, decoder);
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				|  |  | -//
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				|  |  | -//                } else if(tag == 1) {
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				|  |  | -//                    // Error: set the code to the value
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				|  |  | -//                    errorCode = content[0];
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				|  |  | -//                }
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				|  |  | -//            }
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				|  |  | -//        }
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				|  |  | -//
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				|  |  | -//        private void parseWarning(byte[] content, LBERDecoder decoder) {
 | 
	
		
			
				|  |  | -//            // It's the warning (choice). Parse the number and set either the
 | 
	
		
			
				|  |  | -//            // expiry time or number of logins remaining.
 | 
	
		
			
				|  |  | -//            ASN1Tagged taggedObject = (ASN1Tagged)decoder.decode(content);
 | 
	
		
			
				|  |  | -//            int contentTag = taggedObject.getIdentifier().getTag();
 | 
	
		
			
				|  |  | -//            content = ((ASN1OctetString)taggedObject.taggedValue()).byteValue();
 | 
	
		
			
				|  |  | -//            int number;
 | 
	
		
			
				|  |  | -//
 | 
	
		
			
				|  |  | -//            try {
 | 
	
		
			
				|  |  | -//                number = ((Long)decoder.decodeNumeric(new ByteArrayInputStream(content), content.length)).intValue();
 | 
	
		
			
				|  |  | -//            } catch(IOException e) {
 | 
	
		
			
				|  |  | -//                throw new LdapDataAccessException("Failed to parse number ", e);
 | 
	
		
			
				|  |  | -//            }
 | 
	
		
			
				|  |  | -//
 | 
	
		
			
				|  |  | -//            if(contentTag == 0) {
 | 
	
		
			
				|  |  | -//                timeBeforeExpiration = number;
 | 
	
		
			
				|  |  | -//            } else if (contentTag == 1) {
 | 
	
		
			
				|  |  | -//                graceLoginsRemaining = number;
 | 
	
		
			
				|  |  | -//            }
 | 
	
		
			
				|  |  | -//        }
 | 
	
		
			
				|  |  | -//    }
 | 
	
		
			
				|  |  | -}
 |