/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
* or http://forgerock.org/license/CDDLv1.0.html.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at legal-notices/CDDLv1_0.txt.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information:
* Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
*
* Copyright 2006-2008 Sun Microsystems, Inc.
* Portions Copyright 2012-2015 ForgeRock AS
*/
package org.opends.server.schema;
import static org.opends.messages.SchemaMessages.*;
import static org.opends.server.schema.SchemaConstants.*;
import static org.opends.server.util.StaticUtils.*;
import org.forgerock.i18n.LocalizableMessage;
import org.forgerock.i18n.slf4j.LocalizedLogger;
import org.forgerock.opendj.ldap.ByteSequence;
import org.forgerock.opendj.ldap.ResultCode;
import org.forgerock.opendj.ldap.schema.Schema;
import org.forgerock.opendj.ldap.schema.Syntax;
import org.opends.server.admin.std.server.AttributeSyntaxCfg;
import org.opends.server.api.AttributeSyntax;
import org.opends.server.types.DirectoryException;
/**
* This class defines an attribute syntax used for storing values that have been
* encoded using a password storage scheme. The format for attribute values
* with this syntax is the concatenation of the following elements in the given
* order:
* <BR>
* <UL>
* <LI>An opening curly brace ("{
private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();
") character.</LI>
* <LI>The name of the storage scheme used to encode the value.</LI>
* <LI>A closing curly brace ("}") character.</LI>
* <LI>The encoded value.</LI>
* </UL>
*/
public class UserPasswordSyntax
extends AttributeSyntax<AttributeSyntaxCfg>
{
private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();
/**
* Creates a new instance of this syntax. Note that the only thing that
* should be done here is to invoke the default constructor for the
* superclass. All initialization should be performed in the
* <CODE>initializeSyntax</CODE> method.
*/
public UserPasswordSyntax()
{
super();
}
/** {@inheritDoc} */
@Override
public Syntax getSDKSyntax(Schema schema)
{
return schema.getSyntax(SchemaConstants.SYNTAX_USER_PASSWORD_OID);
}
/**
* Retrieves the common name for this attribute syntax.
*
* @return The common name for this attribute syntax.
*/
@Override
public String getName()
{
return SYNTAX_USER_PASSWORD_NAME;
}
/**
* Retrieves the OID for this attribute syntax.
*
* @return The OID for this attribute syntax.
*/
@Override
public String getOID()
{
return SYNTAX_USER_PASSWORD_OID;
}
/**
* Retrieves a description for this attribute syntax.
*
* @return A description for this attribute syntax.
*/
@Override
public String getDescription()
{
return SYNTAX_USER_PASSWORD_DESCRIPTION;
}
/**
* Decodes the provided user password value into its component parts.
*
* @param userPasswordValue The user password value to be decoded.
*
* @return A two-element string array whose elements are the storage scheme
* name (in all lowercase characters) and the encoded value, in that
* order.
*
* @throws DirectoryException If a problem is encountered while attempting
* to decode the value.
*/
public static String[] decodeUserPassword(String userPasswordValue)
throws DirectoryException
{
// Make sure that there actually is a value to decode.
if (userPasswordValue == null || userPasswordValue.length() == 0)
{
LocalizableMessage message = ERR_ATTR_SYNTAX_USERPW_NO_VALUE.get();
throw new DirectoryException(
ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
}
// The first character of an encoded value must be an opening curly brace.
if (userPasswordValue.charAt(0) != '{')
{
LocalizableMessage message = ERR_ATTR_SYNTAX_USERPW_NO_OPENING_BRACE.get();
throw new DirectoryException(
ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
}
// There must be a corresponding closing brace.
int closePos = userPasswordValue.indexOf('}');
if (closePos < 0)
{
LocalizableMessage message = ERR_ATTR_SYNTAX_USERPW_NO_CLOSING_BRACE.get();
throw new DirectoryException(
ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
}
// Get the storage scheme name and encoded value.
String schemeName = userPasswordValue.substring(1, closePos);
String encodedValue = userPasswordValue.substring(closePos+1);
if (schemeName.length() == 0)
{
LocalizableMessage message = ERR_ATTR_SYNTAX_USERPW_NO_SCHEME.get();
throw new DirectoryException(
ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
}
return new String[] { toLowerCase(schemeName), encodedValue };
}
/**
* Indicates whether the provided value is encoded using the user password
* syntax.
*
* @param value The value for which to make the determination.
*
* @return <CODE>true</CODE> if the value appears to be encoded using the
* user password syntax, or <CODE>false</CODE> if not.
*/
public static boolean isEncoded(ByteSequence value)
{
// If the value is null or empty, then it's not.
if (value == null || value.length() == 0)
{
return false;
}
// If the value doesn't start with an opening curly brace, then it's not.
if (value.byteAt(0) != '{')
{
return false;
}
// There must be a corresponding closing curly brace, and there must be at
// least one character inside the brace.
int closingBracePos = -1;
for (int i=1; i < value.length(); i++)
{
if (value.byteAt(i) == '}')
{
closingBracePos = i;
break;
}
}
return closingBracePos >= 0
&& closingBracePos != 1
// The closing curly brace must not be the last character of the password.
&& closingBracePos != value.length() - 1;
}
}