/*
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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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* Copyright 2006-2008 Sun Microsystems, Inc.
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*/
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package org.opends.server.api;
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import org.opends.messages.Message;
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import java.util.List;
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import org.opends.server.admin.std.server.SASLMechanismHandlerCfg;
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import org.opends.server.config.ConfigException;
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import org.opends.server.core.BindOperation;
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import org.opends.server.types.InitializationException;
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/**
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* This class defines the set of methods and structures that must be
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* implemented by a Directory Server module that implements the
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* functionality required for one or more SASL mechanisms.
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*
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* @param <T> The type of configuration handled by this SASL
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* mechanism handler.
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*/
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@org.opends.server.types.PublicAPI(
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stability=org.opends.server.types.StabilityLevel.VOLATILE,
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mayInstantiate=false,
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mayExtend=true,
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mayInvoke=false)
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public abstract class SASLMechanismHandler
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<T extends SASLMechanismHandlerCfg>
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{
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/**
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* Initializes this SASL mechanism handler based on the information
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* in the provided configuration entry. It should also register
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* itself with the Directory Server for the particular kinds of SASL
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* mechanisms that it will process.
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*
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* @param configuration The configuration to use to initialize
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* this SASL mechanism handler.
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*
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* @throws ConfigException If an unrecoverable problem arises in
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* the process of performing the
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* initialization.
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*
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* @throws InitializationException If a problem occurs during
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* initialization that is not
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* related to the server
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* configuration.
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*/
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public abstract void initializeSASLMechanismHandler(T configuration)
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throws ConfigException, InitializationException;
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/**
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* Indicates whether the provided configuration is acceptable for
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* this SASL mechanism handler. It should be possible to call this
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* method on an uninitialized SASL mechanism handler instance in
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* order to determine whether the SASL mechanism handler would be
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* able to use the provided configuration.
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* <BR><BR>
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* Note that implementations which use a subclass of the provided
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* configuration class will likely need to cast the configuration
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* to the appropriate subclass type.
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*
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* @param configuration The SASL mechanism handler
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* configuration for which to make the
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* determination.
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* @param unacceptableReasons A list that may be used to hold the
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* reasons that the provided
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* configuration is not acceptable.
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*
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* @return {@code true} if the provided configuration is acceptable
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* for this SASL mechanism handler, or {@code false} if
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* not.
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*/
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public boolean isConfigurationAcceptable(
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SASLMechanismHandlerCfg configuration,
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List<Message> unacceptableReasons)
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{
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// This default implementation does not perform any special
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// validation. It should be overridden by SASL mechanism handler
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// implementations that wish to perform more detailed validation.
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return true;
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}
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/**
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* Performs any finalization that may be necessary for this SASL
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* mechanism handler. By default, no finalization is performed.
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*/
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public void finalizeSASLMechanismHandler()
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{
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// No implementation is required by default.
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}
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/**
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* Processes the SASL bind operation. SASL mechanism
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* implementations must ensure that the following actions are taken
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* during the processing of this method:
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* <UL>
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* <LI>The {@code BindOperation.setResultCode} method must be used
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* to set the appropriate result code.</LI>
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* <LI>If the SASL processing gets far enough to be able to map
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* the request to a user entry (regardless of whether the
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* authentication is ultimately successful), then this method
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* must call the {@code BindOperation.setSASLAuthUserEntry}
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* method to provide it with the entry for the user that
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* attempted to authenticate.</LI>
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* <LI>If the bind processing was successful, then the
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* {@code BindOperation.setAuthenticationInfo} method must be
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* used to set the authentication info for the bind
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* operation.</LI>
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* <LI>If the bind processing was not successful, then the
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* {@code BindOperation.setAuthFailureReason} method should be
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* used to provide a message explaining why the authentication
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* failed.</LI>
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* </UL>
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*
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* @param bindOperation The SASL bind operation to be processed.
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*/
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public abstract void processSASLBind(BindOperation bindOperation);
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/**
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* Indicates whether the specified SASL mechanism is password-based
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* or uses some other form of credentials (e.g., an SSL client
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* certificate or Kerberos ticket).
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*
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* @param mechanism The name of the mechanism for which to make
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* the determination. This will only be invoked
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* with names of mechanisms for which this
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* handler has previously registered.
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*
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* @return {@code true} if this SASL mechanism is password-based,
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* or {@code false} if it uses some other form of
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* credentials.
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*/
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public abstract boolean isPasswordBased(String mechanism);
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/**
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* Indicates whether the specified SASL mechanism should be
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* considered secure (i.e., it does not expose the authentication
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* credentials in a manner that is useful to a third-party observer,
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* and other aspects of the authentication are generally secure).
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*
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* @param mechanism The name of the mechanism for which to make
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* the determination. This will only be invoked
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* with names of mechanisms for which this
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* handler has previously registered.
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*
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* @return {@code true} if this SASL mechanism should be considered
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* secure, or {@code false} if not.
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*/
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public abstract boolean isSecure(String mechanism);
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}
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