/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying * information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Portions Copyright 2006 Sun Microsystems, Inc.
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*/
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package org.opends.server.extensions;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.StringTokenizer;
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import java.util.concurrent.locks.ReentrantLock;
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import org.opends.server.api.ConfigurableComponent;
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import org.opends.server.api.PasswordGenerator;
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import org.opends.server.config.ConfigAttribute;
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import org.opends.server.config.ConfigEntry;
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import org.opends.server.config.ConfigException;
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import org.opends.server.config.StringConfigAttribute;
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import org.opends.server.core.DirectoryException;
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import org.opends.server.core.DirectoryServer;
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import org.opends.server.core.InitializationException;
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import org.opends.server.protocols.asn1.ASN1OctetString;
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import org.opends.server.types.ConfigChangeResult;
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import org.opends.server.types.DN;
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import org.opends.server.types.Entry;
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import org.opends.server.types.NamedCharacterSet;
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import org.opends.server.types.ResultCode;
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import static org.opends.server.config.ConfigConstants.*;
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import static org.opends.server.loggers.Debug.*;
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import static org.opends.server.messages.ExtensionsMessages.*;
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import static org.opends.server.messages.MessageHandler.*;
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import static org.opends.server.util.StaticUtils.*;
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/**
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* This class provides an implementation of a Directory Server password
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* generator that will create random passwords based on fixed-length strings
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* built from one or more character sets.
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*/
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public class RandomPasswordGenerator
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extends PasswordGenerator
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implements ConfigurableComponent
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{
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/**
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* The fully-qualified name of this class for debugging purposes.
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*/
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private static final String CLASS_NAME =
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"org.opends.server.extensions.RandomPasswordGenerator";
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// The encoded list of character sets defined for this password generator.
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private List<String> encodedCharacterSets;
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// The DN of the configuration entry for this password generator.
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private DN configEntryDN;
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// The total length of the password that will be generated.
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private int totalLength;
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// The numbers of characters of each type that should be used to generate the
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// passwords.
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private int[] characterCounts;
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// The character sets that should be used to generate the passwords.
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private NamedCharacterSet[] characterSets;
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// The lock to use to ensure that the character sets and counts are not
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// altered while a password is being generated.
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private ReentrantLock generatorLock;
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// The character set format string for this password generator.
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private String formatString;
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/**
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* Initializes this password generator based on the information in the
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* provided configuration entry.
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*
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* @param configEntry The configuration entry that contains the information
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* to use to initialize this password generator.
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*
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* @throws ConfigException If an unrecoverable problem arises in the
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* process of performing the initialization.
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*
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* @throws InitializationException If a problem occurs during initialization
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* that is not related to the server
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* configuration.
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*/
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public void initializePasswordGenerator(ConfigEntry configEntry)
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throws ConfigException, InitializationException
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{
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assert debugEnter(CLASS_NAME, "initializePasswordGenerator",
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String.valueOf(configEntry));
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this.configEntryDN = configEntry.getDN();
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// Get the character sets for use in generating the password. At least one
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// must have been provided.
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HashMap<String,NamedCharacterSet> charsets =
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new HashMap<String,NamedCharacterSet>();
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int msgID = MSGID_RANDOMPWGEN_DESCRIPTION_CHARSET;
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StringConfigAttribute charsetStub =
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new StringConfigAttribute(ATTR_PASSWORD_CHARSET, getMessage(msgID),
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true, true, false);
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try
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{
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StringConfigAttribute charsetAttr =
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(StringConfigAttribute) configEntry.getConfigAttribute(charsetStub);
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if (charsetAttr == null)
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{
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msgID = MSGID_RANDOMPWGEN_NO_CHARSETS;
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String message = getMessage(msgID, String.valueOf(configEntryDN));
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throw new ConfigException(msgID, message);
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}
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else
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{
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encodedCharacterSets = charsetAttr.activeValues();
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for (NamedCharacterSet s :
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NamedCharacterSet.decodeCharacterSets(encodedCharacterSets))
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{
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if (charsets.containsKey(s.getName()))
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{
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msgID = MSGID_RANDOMPWGEN_CHARSET_NAME_CONFLICT;
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String message = getMessage(msgID, String.valueOf(configEntryDN),
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s.getName());
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throw new ConfigException(msgID, message);
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}
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else
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{
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charsets.put(s.getName(), s);
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}
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}
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}
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}
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catch (ConfigException ce)
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{
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throw ce;
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}
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catch (Exception e)
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{
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assert debugException(CLASS_NAME, "initializePasswordGenerator", e);
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msgID = MSGID_RANDOMPWGEN_CANNOT_DETERMINE_CHARSETS;
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String message = getMessage(msgID, stackTraceToSingleLineString(e));
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throw new InitializationException(msgID, message, e);
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}
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// Get the value that describes which character set(s) and how many
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// characters from each should be used.
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msgID = MSGID_RANDOMPWGEN_DESCRIPTION_PWFORMAT;
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StringConfigAttribute pwFormatStub =
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new StringConfigAttribute(ATTR_PASSWORD_FORMAT, getMessage(msgID),
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true, false, false);
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try
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{
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StringConfigAttribute pwFormatAttr =
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(StringConfigAttribute) configEntry.getConfigAttribute(pwFormatStub);
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if (pwFormatAttr == null)
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{
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msgID = MSGID_RANDOMPWGEN_NO_PWFORMAT;
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String message = getMessage(msgID);
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throw new ConfigException(msgID, message);
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}
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else
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{
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formatString = pwFormatAttr.activeValue();
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StringTokenizer tokenizer = new StringTokenizer(formatString, ", ");
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ArrayList<NamedCharacterSet> setList =
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new ArrayList<NamedCharacterSet>();
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ArrayList<Integer> countList = new ArrayList<Integer>();
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while (tokenizer.hasMoreTokens())
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{
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String token = tokenizer.nextToken();
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try
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{
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int colonPos = token.indexOf(':');
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String name = token.substring(0, colonPos);
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int count = Integer.parseInt(token.substring(colonPos+1));
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NamedCharacterSet charset = charsets.get(name);
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if (charset == null)
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{
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msgID = MSGID_RANDOMPWGEN_UNKNOWN_CHARSET;
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String message = getMessage(msgID, String.valueOf(formatString),
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String.valueOf(name));
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throw new ConfigException(msgID, message);
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}
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else
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{
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setList.add(charset);
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countList.add(count);
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}
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}
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catch (ConfigException ce)
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{
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throw ce;
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}
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catch (Exception e)
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{
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assert debugException(CLASS_NAME, "initializePasswordGenerator", e);
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msgID = MSGID_RANDOMPWGEN_INVALID_PWFORMAT;
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String message = getMessage(msgID, String.valueOf(formatString));
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throw new ConfigException(msgID, message, e);
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}
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}
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characterSets = new NamedCharacterSet[setList.size()];
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characterCounts = new int[characterSets.length];
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totalLength = 0;
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for (int i=0; i < characterSets.length; i++)
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{
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characterSets[i] = setList.get(i);
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characterCounts[i] = countList.get(i);
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totalLength += characterCounts[i];
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}
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}
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}
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catch (ConfigException ce)
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{
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throw ce;
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}
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catch (Exception e)
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{
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assert debugException(CLASS_NAME, "initializePasswordGenerator", e);
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msgID = MSGID_RANDOMPWGEN_CANNOT_DETERMINE_PWFORMAT;
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String message = getMessage(msgID, stackTraceToSingleLineString(e));
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throw new InitializationException(msgID, message, e);
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}
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DirectoryServer.registerConfigurableComponent(this);
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}
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/**
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* Performs any finalization work that may be necessary when this password
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* generator is taken out of service.
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*/
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public void finalizePasswordGenerator()
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{
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assert debugEnter(CLASS_NAME, "finalizePasswordGenerator");
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DirectoryServer.deregisterConfigurableComponent(this);
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}
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/**
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* Generates a password for the user whose account is contained in the
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* specified entry.
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*
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* @param userEntry The entry for the user for whom the password is to be
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* generated.
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*
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* @return The password that has been generated for the user.
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*
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* @throws DirectoryException If a problem occurs while attempting to
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* generate the password.
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*/
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public ASN1OctetString generatePassword(Entry userEntry)
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throws DirectoryException
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{
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assert debugEnter(CLASS_NAME, "generatePassword",
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String.valueOf(userEntry));
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StringBuilder buffer = new StringBuilder(totalLength);
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generatorLock.lock();
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try
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{
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for (int i=0; i < characterSets.length; i++)
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{
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characterSets[i].getRandomCharacters(buffer, characterCounts[i]);
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}
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}
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finally
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{
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generatorLock.unlock();
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}
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return new ASN1OctetString(buffer.toString());
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}
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/**
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* Retrieves the DN of the configuration entry with which this component is
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* associated.
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*
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* @return The DN of the configuration entry with which this component is
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* associated.
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*/
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public DN getConfigurableComponentEntryDN()
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{
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assert debugEnter(CLASS_NAME, "getConfigurableComponentEntryDN");
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return configEntryDN;
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}
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/**
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* Retrieves the set of configuration attributes that are associated with this
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* configurable component.
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*
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* @return The set of configuration attributes that are associated with this
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* configurable component.
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*/
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public List<ConfigAttribute> getConfigurationAttributes()
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{
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assert debugEnter(CLASS_NAME, "getConfigurationAttributes");
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LinkedList<ConfigAttribute> attrList = new LinkedList<ConfigAttribute>();
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ArrayList<String> charsetValues = new ArrayList<String>();
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for (int i=0; i < characterSets.length; i++)
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{
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String encodedValue = characterSets[i].encode();
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if (! charsetValues.contains(encodedValue))
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{
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charsetValues.add(encodedValue);
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}
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}
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int msgID = MSGID_RANDOMPWGEN_DESCRIPTION_CHARSET;
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attrList.add(new StringConfigAttribute(ATTR_PASSWORD_CHARSET,
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getMessage(msgID), true, true, false,
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charsetValues));
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msgID = MSGID_RANDOMPWGEN_DESCRIPTION_PWFORMAT;
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attrList.add(new StringConfigAttribute(ATTR_PASSWORD_FORMAT,
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getMessage(msgID), true, false,
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false, formatString));
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return attrList;
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}
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/**
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* Indicates whether the provided configuration entry has an acceptable
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* configuration for this component. If it does not, then detailed
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* information about the problem(s) should be added to the provided list.
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*
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* @param configEntry The configuration entry for which to make the
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* determination.
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* @param unacceptableReasons A list that can be used to hold messages about
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* why the provided entry does not have an
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* acceptable configuration.
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*
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* @return <CODE>true</CODE> if the provided entry has an acceptable
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* configuration for this component, or <CODE>false</CODE> if not.
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*/
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public boolean hasAcceptableConfiguration(ConfigEntry configEntry,
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List<String> unacceptableReasons)
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{
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assert debugEnter(CLASS_NAME, "hasAcceptableConfiguration",
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String.valueOf(configEntry), "java.util.List<String>");
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// Get the character sets for use in generating the password. At least one
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// must have been provided.
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HashMap<String,NamedCharacterSet> charsets =
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new HashMap<String,NamedCharacterSet>();
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int msgID = MSGID_RANDOMPWGEN_DESCRIPTION_CHARSET;
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StringConfigAttribute charsetStub =
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new StringConfigAttribute(ATTR_PASSWORD_CHARSET, getMessage(msgID),
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true, true, false);
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try
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{
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StringConfigAttribute charsetAttr =
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(StringConfigAttribute) configEntry.getConfigAttribute(charsetStub);
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if (charsetAttr == null)
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{
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msgID = MSGID_RANDOMPWGEN_NO_CHARSETS;
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String message = getMessage(msgID, String.valueOf(configEntryDN));
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unacceptableReasons.add(message);
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return false;
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}
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else
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{
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for (NamedCharacterSet s :
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NamedCharacterSet.decodeCharacterSets(charsetAttr.activeValues()))
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{
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if (charsets.containsKey(s.getName()))
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{
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msgID = MSGID_RANDOMPWGEN_CHARSET_NAME_CONFLICT;
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String message = getMessage(msgID, String.valueOf(configEntryDN),
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s.getName());
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unacceptableReasons.add(message);
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return false;
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}
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else
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{
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charsets.put(s.getName(), s);
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}
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}
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}
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}
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catch (ConfigException ce)
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{
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unacceptableReasons.add(ce.getMessage());
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return false;
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}
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catch (Exception e)
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{
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assert debugException(CLASS_NAME, "hasAcceptableConfiguration", e);
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msgID = MSGID_RANDOMPWGEN_CANNOT_DETERMINE_CHARSETS;
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String message = getMessage(msgID, stackTraceToSingleLineString(e));
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unacceptableReasons.add(message);
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return false;
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}
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// Get the value that describes which character set(s) and how many
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// characters from each should be used.
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msgID = MSGID_RANDOMPWGEN_DESCRIPTION_PWFORMAT;
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StringConfigAttribute pwFormatStub =
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new StringConfigAttribute(ATTR_PASSWORD_FORMAT, getMessage(msgID),
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true, false, false);
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try
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{
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StringConfigAttribute pwFormatAttr =
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(StringConfigAttribute) configEntry.getConfigAttribute(pwFormatStub);
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if (pwFormatAttr == null)
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{
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unacceptableReasons.add(getMessage(MSGID_RANDOMPWGEN_NO_PWFORMAT));
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return false;
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}
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else
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{
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String formatString = pwFormatAttr.activeValue();
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StringTokenizer tokenizer = new StringTokenizer(formatString, ", ");
|
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while (tokenizer.hasMoreTokens())
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{
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String token = tokenizer.nextToken();
|
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try
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{
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int colonPos = token.indexOf(':');
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String name = token.substring(0, colonPos);
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int count = Integer.parseInt(token.substring(colonPos+1));
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NamedCharacterSet charset = charsets.get(name);
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if (charset == null)
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{
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msgID = MSGID_RANDOMPWGEN_UNKNOWN_CHARSET;
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String message = getMessage(msgID, String.valueOf(formatString),
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String.valueOf(name));
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unacceptableReasons.add(message);
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return false;
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}
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}
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catch (Exception e)
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{
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assert debugException(CLASS_NAME, "hasAcceptableConfiguration", e);
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msgID = MSGID_RANDOMPWGEN_INVALID_PWFORMAT;
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String message = getMessage(msgID, String.valueOf(formatString));
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unacceptableReasons.add(message);
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return false;
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}
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}
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}
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}
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catch (ConfigException ce)
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{
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unacceptableReasons.add(ce.getMessage());
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return false;
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}
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catch (Exception e)
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{
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assert debugException(CLASS_NAME, "hasAcceptableConfiguration", e);
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msgID = MSGID_RANDOMPWGEN_CANNOT_DETERMINE_PWFORMAT;
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String message = getMessage(msgID, stackTraceToSingleLineString(e));
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unacceptableReasons.add(message);
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return false;
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}
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|
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// If we've gotten here, then everything looks OK.
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return true;
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}
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/**
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* Makes a best-effort attempt to apply the configuration contained in the
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* provided entry. Information about the result of this processing should be
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* added to the provided message list. Information should always be added to
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* this list if a configuration change could not be applied. If detailed
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* results are requested, then information about the changes applied
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* successfully (and optionally about parameters that were not changed) should
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* also be included.
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*
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* @param configEntry The entry containing the new configuration to
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* apply for this component.
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* @param detailedResults Indicates whether detailed information about the
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* processing should be added to the list.
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*
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* @return Information about the result of the configuration update.
|
*/
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public ConfigChangeResult applyNewConfiguration(ConfigEntry configEntry,
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boolean detailedResults)
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{
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assert debugEnter(CLASS_NAME, "applyNewConfiguration",
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String.valueOf(configEntry),
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String.valueOf(detailedResults));
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|
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ResultCode resultCode = ResultCode.SUCCESS;
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boolean adminActionRequired = false;
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ArrayList<String> messages = new ArrayList<String>();
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|
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// Get the character sets for use in generating the password. At least one
|
// must have been provided.
|
List<String> newEncodedCharacterSets = null;
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HashMap<String,NamedCharacterSet> charsets =
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new HashMap<String,NamedCharacterSet>();
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int msgID = MSGID_RANDOMPWGEN_DESCRIPTION_CHARSET;
|
StringConfigAttribute charsetStub =
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new StringConfigAttribute(ATTR_PASSWORD_CHARSET, getMessage(msgID),
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true, true, false);
|
try
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{
|
StringConfigAttribute charsetAttr =
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(StringConfigAttribute) configEntry.getConfigAttribute(charsetStub);
|
if (charsetAttr == null)
|
{
|
msgID = MSGID_RANDOMPWGEN_NO_CHARSETS;
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messages.add(getMessage(msgID, String.valueOf(configEntryDN)));
|
|
if (resultCode == ResultCode.SUCCESS)
|
{
|
resultCode = ResultCode.OBJECTCLASS_VIOLATION;
|
}
|
}
|
else
|
{
|
newEncodedCharacterSets = charsetAttr.activeValues();
|
for (NamedCharacterSet s :
|
NamedCharacterSet.decodeCharacterSets(encodedCharacterSets))
|
{
|
if (charsets.containsKey(s.getName()))
|
{
|
msgID = MSGID_RANDOMPWGEN_CHARSET_NAME_CONFLICT;
|
messages.add(getMessage(msgID, String.valueOf(configEntryDN),
|
s.getName()));
|
|
if (resultCode == ResultCode.SUCCESS)
|
{
|
resultCode = ResultCode.CONSTRAINT_VIOLATION;
|
}
|
}
|
else
|
{
|
charsets.put(s.getName(), s);
|
}
|
}
|
}
|
}
|
catch (ConfigException ce)
|
{
|
messages.add(ce.getMessage());
|
|
if (resultCode == ResultCode.SUCCESS)
|
{
|
resultCode = ResultCode.INVALID_ATTRIBUTE_SYNTAX;
|
}
|
}
|
catch (Exception e)
|
{
|
assert debugException(CLASS_NAME, "initializePasswordGenerator", e);
|
|
msgID = MSGID_RANDOMPWGEN_CANNOT_DETERMINE_CHARSETS;
|
messages.add(getMessage(msgID, stackTraceToSingleLineString(e)));
|
|
if (resultCode == ResultCode.SUCCESS)
|
{
|
resultCode = DirectoryServer.getServerErrorResultCode();
|
}
|
}
|
|
|
// Get the value that describes which character set(s) and how many
|
// characters from each should be used.
|
ArrayList<NamedCharacterSet> newSetList =
|
new ArrayList<NamedCharacterSet>();
|
ArrayList<Integer> newCountList = new ArrayList<Integer>();
|
String newFormatString = null;
|
|
msgID = MSGID_RANDOMPWGEN_DESCRIPTION_PWFORMAT;
|
StringConfigAttribute pwFormatStub =
|
new StringConfigAttribute(ATTR_PASSWORD_FORMAT, getMessage(msgID),
|
true, false, false);
|
try
|
{
|
StringConfigAttribute pwFormatAttr =
|
(StringConfigAttribute) configEntry.getConfigAttribute(pwFormatStub);
|
if (pwFormatAttr == null)
|
{
|
msgID = MSGID_RANDOMPWGEN_NO_PWFORMAT;
|
messages.add(getMessage(MSGID_RANDOMPWGEN_NO_PWFORMAT));
|
|
if (resultCode == ResultCode.SUCCESS)
|
{
|
resultCode = ResultCode.OBJECTCLASS_VIOLATION;
|
}
|
}
|
else
|
{
|
newFormatString = pwFormatAttr.activeValue();
|
StringTokenizer tokenizer = new StringTokenizer(newFormatString, ", ");
|
|
|
while (tokenizer.hasMoreTokens())
|
{
|
String token = tokenizer.nextToken();
|
|
try
|
{
|
int colonPos = token.indexOf(':');
|
String name = token.substring(0, colonPos);
|
int count = Integer.parseInt(token.substring(colonPos+1));
|
|
NamedCharacterSet charset = charsets.get(name);
|
if (charset == null)
|
{
|
msgID = MSGID_RANDOMPWGEN_UNKNOWN_CHARSET;
|
messages.add(getMessage(msgID, String.valueOf(newFormatString),
|
String.valueOf(name)));
|
|
if (resultCode == ResultCode.SUCCESS)
|
{
|
resultCode = ResultCode.CONSTRAINT_VIOLATION;
|
}
|
}
|
else
|
{
|
newSetList.add(charset);
|
newCountList.add(count);
|
}
|
}
|
catch (Exception e)
|
{
|
assert debugException(CLASS_NAME, "initializePasswordGenerator", e);
|
|
msgID = MSGID_RANDOMPWGEN_INVALID_PWFORMAT;
|
messages.add(getMessage(msgID, String.valueOf(newFormatString)));
|
|
if (resultCode == ResultCode.SUCCESS)
|
{
|
resultCode = DirectoryServer.getServerErrorResultCode();
|
}
|
}
|
}
|
}
|
}
|
catch (ConfigException ce)
|
{
|
messages.add(ce.getMessage());
|
|
if (resultCode == ResultCode.SUCCESS)
|
{
|
resultCode = DirectoryServer.getServerErrorResultCode();
|
}
|
}
|
catch (Exception e)
|
{
|
assert debugException(CLASS_NAME, "initializePasswordGenerator", e);
|
|
msgID = MSGID_RANDOMPWGEN_CANNOT_DETERMINE_PWFORMAT;
|
messages.add(getMessage(msgID, stackTraceToSingleLineString(e)));
|
|
if (resultCode == ResultCode.SUCCESS)
|
{
|
resultCode = DirectoryServer.getServerErrorResultCode();
|
}
|
}
|
|
|
// If everything looks OK, then apply the changes.
|
if (resultCode == ResultCode.SUCCESS)
|
{
|
generatorLock.lock();
|
|
try
|
{
|
encodedCharacterSets = newEncodedCharacterSets;
|
formatString = newFormatString;
|
|
characterSets = new NamedCharacterSet[newSetList.size()];
|
characterCounts = new int[characterSets.length];
|
|
totalLength = 0;
|
for (int i=0; i < characterCounts.length; i++)
|
{
|
characterSets[i] = newSetList.get(i);
|
characterCounts[i] = newCountList.get(i);
|
totalLength += characterCounts[i];
|
}
|
}
|
finally
|
{
|
generatorLock.unlock();
|
}
|
}
|
|
|
return new ConfigChangeResult(resultCode, adminActionRequired, messages);
|
}
|
}
|
