/*
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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 legal-notices/CDDLv1_0.txt
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* or http://forgerock.org/license/CDDLv1.0.html.
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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 legal-notices/CDDLv1_0.txt.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* 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 2008-2009 Sun Microsystems, Inc.
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* Portions Copyright 2011-2015 ForgeRock AS.
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*/
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package org.opends.server.extensions;
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import static org.opends.messages.ExtensionMessages.*;
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import static org.opends.server.util.ServerConstants.*;
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import static org.opends.server.util.StaticUtils.*;
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import java.security.PrivilegedActionException;
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import java.security.PrivilegedExceptionAction;
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import java.util.HashMap;
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import java.util.List;
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import java.util.concurrent.locks.Lock;
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import javax.security.auth.Subject;
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import javax.security.auth.callback.*;
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import javax.security.auth.login.LoginContext;
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import javax.security.sasl.*;
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import org.ietf.jgss.GSSException;
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import org.forgerock.i18n.LocalizableMessage;
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import org.opends.server.api.AuthenticationPolicyState;
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import org.opends.server.api.ClientConnection;
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import org.opends.server.api.IdentityMapper;
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import org.opends.server.core.AccessControlConfigManager;
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import org.opends.server.core.BindOperation;
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import org.opends.server.core.DirectoryServer;
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import org.opends.server.core.PasswordPolicyState;
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import org.forgerock.i18n.slf4j.LocalizedLogger;
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import org.opends.server.protocols.internal.InternalClientConnection;
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import org.opends.server.protocols.ldap.LDAPClientConnection;
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import org.opends.server.types.*;
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import org.forgerock.opendj.ldap.ResultCode;
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import org.forgerock.opendj.ldap.ByteString;
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/**
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* This class defines the SASL context needed to process GSSAPI and DIGEST-MD5
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* bind requests from clients.
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*/
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public class SASLContext implements CallbackHandler,
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PrivilegedExceptionAction<Boolean>
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{
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private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();
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/**
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* Instantiate a GSSAPI/DIGEST-MD5 SASL context using the specified
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* parameters.
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*
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* @param saslProps
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* The properties to use in creating the SASL server.
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* @param serverFQDN
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* The fully qualified domain name to use in creating the SASL
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* server.
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* @param mechanism
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* The SASL mechanism name.
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* @param identityMapper
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* The identity mapper to use in mapping identities.
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* @return A fully instantiated SASL context to use in processing a SASL bind
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* for the GSSAPI or DIGEST-MD5 mechanisms.
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* @throws SaslException
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* If the SASL server can not be instantiated.
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*/
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public static SASLContext createSASLContext(
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final HashMap<String, String> saslProps, final String serverFQDN,
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final String mechanism, final IdentityMapper<?> identityMapper)
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throws SaslException
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{
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return (new SASLContext(saslProps, serverFQDN, mechanism, identityMapper));
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}
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// The SASL server to use in the authentication.
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private SaslServer saslServer;
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// The identity mapper to use when mapping identities.
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private final IdentityMapper<?> identityMapper;
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// The property set to use when creating the SASL server.
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private final HashMap<String, String> saslProps;
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// The fully qualified domain name to use when creating the SASL server.
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private final String serverFQDN;
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// The SASL mechanism name.
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private final String mechanism;
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// The authorization entry used in the authentication.
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private Entry authEntry;
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// The authorization entry used in the authentication.
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private Entry authzEntry;
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// The user name used in the authentication taken from the name callback.
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private String userName;
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// Error message used by callbacks.
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private LocalizableMessage cbMsg;
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// Error code used by callbacks.
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private ResultCode cbResultCode;
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// The current bind operation used by the callbacks.
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private BindOperation bindOp;
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// Used to check if negotiated QOP is confidentiality or integrity.
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private static final String confidentiality = "auth-conf";
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private static final String integrity = "auth-int";
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/**
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* Create a SASL context using the specified parameters. A SASL server will be
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* instantiated only for the DIGEST-MD5 mechanism. The GSSAPI mechanism must
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* instantiate the SASL server as the login context in a separate step.
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*
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* @param saslProps
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* The properties to use in creating the SASL server.
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* @param serverFQDN
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* The fully qualified domain name to use in creating the SASL
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* server.
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* @param mechanism
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* The SASL mechanism name.
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* @param identityMapper
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* The identity mapper to use in mapping identities.
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* @throws SaslException
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* If the SASL server can not be instantiated.
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*/
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private SASLContext(final HashMap<String, String> saslProps,
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final String serverFQDN, final String mechanism,
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final IdentityMapper<?> identityMapper) throws SaslException
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{
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this.identityMapper = identityMapper;
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this.mechanism = mechanism;
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this.saslProps = saslProps;
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this.serverFQDN = serverFQDN;
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if (mechanism.equals(SASL_MECHANISM_DIGEST_MD5))
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{
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initSASLServer();
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}
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}
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/**
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* Process the specified callback array.
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*
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* @param callbacks
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* An array of callbacks that need processing.
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* @throws UnsupportedCallbackException
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* If a callback is not supported.
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*/
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@Override
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public void handle(final Callback[] callbacks)
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throws UnsupportedCallbackException
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{
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for (final Callback callback : callbacks)
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{
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if (callback instanceof NameCallback)
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{
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nameCallback((NameCallback) callback);
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}
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else if (callback instanceof PasswordCallback)
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{
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passwordCallback((PasswordCallback) callback);
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}
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else if (callback instanceof RealmCallback)
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{
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realmCallback((RealmCallback) callback);
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}
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else if (callback instanceof AuthorizeCallback)
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{
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authorizeCallback((AuthorizeCallback) callback);
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}
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else
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{
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final LocalizableMessage message = INFO_SASL_UNSUPPORTED_CALLBACK.get(mechanism, callback);
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throw new UnsupportedCallbackException(callback, message.toString());
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}
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}
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}
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/**
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* The method performs all GSSAPI processing. It is run as the context of the
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* login context performed by the GSSAPI mechanism handler. See comments for
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* processing overview.
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*
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* @return {@code true} if the authentication processing was successful.
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*/
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@Override
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public Boolean run()
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{
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final ClientConnection clientConn = bindOp.getClientConnection();
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// If the SASL server is null then this is the first handshake and the
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// server needs to be initialized before any processing can be performed.
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// If the SASL server cannot be created then all processing is abandoned
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// and INVALID_CREDENTIALS is returned to the client.
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if (saslServer == null)
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{
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try
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{
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initSASLServer();
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}
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catch (final SaslException ex)
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{
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logger.traceException(ex);
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final GSSException gex = (GSSException) ex.getCause();
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final LocalizableMessage msg;
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if (gex != null)
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{
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msg = ERR_SASL_CONTEXT_CREATE_ERROR.get(SASL_MECHANISM_GSSAPI,
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GSSAPISASLMechanismHandler.getGSSExceptionMessage(gex));
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}
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else
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{
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msg = ERR_SASL_CONTEXT_CREATE_ERROR.get(SASL_MECHANISM_GSSAPI,
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getExceptionMessage(ex));
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}
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clientConn.setSASLAuthStateInfo(null);
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bindOp.setAuthFailureReason(msg);
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bindOp.setResultCode(ResultCode.INVALID_CREDENTIALS);
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return false;
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}
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}
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final ByteString clientCredentials = bindOp.getSASLCredentials();
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clientConn.setSASLAuthStateInfo(null);
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try
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{
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final ByteString responseAuthStr = evaluateResponse(clientCredentials);
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// If the bind has not been completed,then
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// more handshake is needed and SASL_BIND_IN_PROGRESS is returned back
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// to the client.
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if (isBindComplete())
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{
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bindOp.setResultCode(ResultCode.SUCCESS);
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bindOp.setSASLAuthUserEntry(authEntry);
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final AuthenticationInfo authInfo = new AuthenticationInfo(authEntry,
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authzEntry, mechanism, clientCredentials,
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DirectoryServer.isRootDN(authEntry.getName()));
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bindOp.setAuthenticationInfo(authInfo);
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// If confidentiality/integrity has been negotiated then
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// create a SASL security provider and save it in the client
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// connection. If confidentiality/integrity has not been
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// negotiated, dispose of the SASL server.
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if (isConfidentialIntegrity())
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{
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final SASLByteChannel saslByteChannel = SASLByteChannel
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.getSASLByteChannel(clientConn, mechanism, this);
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final LDAPClientConnection ldapConn =
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(LDAPClientConnection) clientConn;
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ldapConn.setSASLPendingProvider(saslByteChannel);
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}
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else
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{
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dispose();
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clientConn.setSASLAuthStateInfo(null);
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}
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}
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else
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{
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bindOp.setServerSASLCredentials(responseAuthStr);
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clientConn.setSASLAuthStateInfo(this);
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bindOp.setResultCode(ResultCode.SASL_BIND_IN_PROGRESS);
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}
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}
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catch (final SaslException e)
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{
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logger.traceException(e);
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final LocalizableMessage msg = ERR_SASL_PROTOCOL_ERROR.get(mechanism,
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getExceptionMessage(e));
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handleError(msg);
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return false;
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}
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return true;
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}
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/**
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* Dispose of the SASL server instance.
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*/
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void dispose()
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{
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try
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{
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saslServer.dispose();
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}
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catch (final SaslException e)
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{
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logger.traceException(e);
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}
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}
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/**
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* Evaluate the final stage of a DIGEST-MD5 SASL bind using the specified bind
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* operation.
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*
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* @param bindOp
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* The bind operation to use in processing.
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*/
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void evaluateFinalStage(final BindOperation bindOp)
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{
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this.bindOp = bindOp;
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final ByteString clientCredentials = bindOp.getSASLCredentials();
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if ((clientCredentials == null) || (clientCredentials.length() == 0))
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{
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final LocalizableMessage msg = ERR_SASL_NO_CREDENTIALS.get(mechanism, mechanism);
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handleError(msg);
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return;
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}
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final ClientConnection clientConn = bindOp.getClientConnection();
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clientConn.setSASLAuthStateInfo(null);
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try
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{
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final ByteString responseAuthStr = evaluateResponse(clientCredentials);
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bindOp.setResultCode(ResultCode.SUCCESS);
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bindOp.setServerSASLCredentials(responseAuthStr);
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bindOp.setSASLAuthUserEntry(authEntry);
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final AuthenticationInfo authInfo = new AuthenticationInfo(authEntry,
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authzEntry, mechanism, clientCredentials,
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DirectoryServer.isRootDN(authEntry.getName()));
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bindOp.setAuthenticationInfo(authInfo);
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// If confidentiality/integrity has been negotiated, then create a
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// SASL security provider and save it in the client connection for
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// use in later processing.
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if (isConfidentialIntegrity())
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{
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final SASLByteChannel saslByteChannel = SASLByteChannel
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.getSASLByteChannel(clientConn, mechanism, this);
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final LDAPClientConnection ldapConn = (LDAPClientConnection) clientConn;
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ldapConn.setSASLPendingProvider(saslByteChannel);
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}
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else
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{
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dispose();
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clientConn.setSASLAuthStateInfo(null);
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}
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}
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catch (final SaslException e)
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{
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logger.traceException(e);
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final LocalizableMessage msg = ERR_SASL_PROTOCOL_ERROR.get(mechanism,
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getExceptionMessage(e));
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handleError(msg);
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}
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}
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/**
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* Process the initial stage of a DIGEST-MD5 SASL bind using the specified
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* bind operation.
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*
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* @param bindOp
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* The bind operation to use in processing.
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*/
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void evaluateInitialStage(final BindOperation bindOp)
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{
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this.bindOp = bindOp;
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final ClientConnection clientConn = bindOp.getClientConnection();
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try
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{
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final ByteString challenge = evaluateResponse(ByteString.empty());
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bindOp.setResultCode(ResultCode.SASL_BIND_IN_PROGRESS);
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bindOp.setServerSASLCredentials(challenge);
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clientConn.setSASLAuthStateInfo(this);
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}
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catch (final SaslException e)
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{
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logger.traceException(e);
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final LocalizableMessage msg = ERR_SASL_PROTOCOL_ERROR.get(mechanism,
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getExceptionMessage(e));
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handleError(msg);
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}
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}
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/**
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* Returns the negotiated maximum size of protected data which can be received
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* from the client.
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*
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* @return The negotiated maximum size of protected data which can be received
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* from the client.
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*/
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int getMaxReceiveBufferSize()
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{
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String str = (String) saslServer.getNegotiatedProperty(Sasl.MAX_BUFFER);
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if (str != null)
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{
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try
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{
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return Integer.parseInt(str);
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}
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catch (NumberFormatException e)
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{
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logger.traceException(e);
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}
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}
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// Default buffer size if not specified according to Java SASL
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// documentation.
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return 65536;
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}
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/**
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* Returns the negotiated maximum size of raw data which can be sent to the
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* client.
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*
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* @return The negotiated maximum size of raw data which can be sent to the
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* client.
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*/
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int getMaxRawSendBufferSize()
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{
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String str = (String) saslServer.getNegotiatedProperty(Sasl.RAW_SEND_SIZE);
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if (str != null)
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{
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try
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{
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return Integer.parseInt(str);
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}
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catch (NumberFormatException e)
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{
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logger.traceException(e);
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}
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}
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// Default buffer size if not specified according to Java SASL
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// documentation.
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return 65536;
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}
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/**
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* Return the Security Strength Factor of the cipher if the QOP property is
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* confidentiality, or, 1 if it is integrity.
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*
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* @return The SSF of the cipher used during confidentiality or integrity
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* processing.
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*/
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int getSSF()
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{
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int ssf = 0;
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final String qop = (String) saslServer.getNegotiatedProperty(Sasl.QOP);
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if (integrity.equalsIgnoreCase(qop))
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{
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ssf = 1;
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}
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else if (confidentiality.equalsIgnoreCase(qop))
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{
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final String negStrength = (String) saslServer
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.getNegotiatedProperty(Sasl.STRENGTH);
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if ("low".equalsIgnoreCase(negStrength))
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{
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ssf = 40;
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}
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else if ("medium".equalsIgnoreCase(negStrength))
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{
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ssf = 56;
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}
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else if ("high".equalsIgnoreCase(negStrength))
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{
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ssf = 128;
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}
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/* Treat anything else as if not security is provided and keep the
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server running
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*/
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}
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return ssf;
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}
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|
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/**
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* Return {@code true} if the bind has been completed. If the context is
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* supporting confidentiality or integrity, the security provider will need to
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* check if the context has completed the handshake with the client and is
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* ready to process confidentiality or integrity messages.
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*
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* @return {@code true} if the handshaking is complete.
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*/
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boolean isBindComplete()
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{
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return saslServer.isComplete();
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}
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|
|
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/**
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* Perform the authentication as the specified login context. The specified
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* bind operation needs to be saved so the callbacks have access to it. Only
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* used by the GSSAPI mechanism.
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*
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* @param loginContext
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* The login context to perform the authentication as.
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* @param bindOp
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* The bind operation needed by the callbacks to process the
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* authentication.
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*/
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void performAuthentication(final LoginContext loginContext,
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final BindOperation bindOp)
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{
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this.bindOp = bindOp;
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try
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{
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Subject.doAs(loginContext.getSubject(), this);
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}
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catch (final PrivilegedActionException e)
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{
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logger.traceException(e);
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final LocalizableMessage msg = ERR_SASL_PROTOCOL_ERROR.get(mechanism,
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getExceptionMessage(e));
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handleError(msg);
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}
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}
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|
|
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/**
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* Unwrap the specified byte array using the provided offset and length
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* values. Used only when the SASL server has negotiated confidentiality or
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* integrity processing.
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*
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* @param bytes
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* The byte array to unwrap.
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* @param offset
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* The offset in the array.
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* @param len
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* The length from the offset of the number of bytes to unwrap.
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* @return A byte array containing the clear or unwrapped bytes.
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* @throws SaslException
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* If the bytes cannot be unwrapped.
|
*/
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byte[] unwrap(final byte[] bytes, final int offset, final int len)
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throws SaslException
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{
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return saslServer.unwrap(bytes, offset, len);
|
}
|
|
|
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/**
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* Wrap the specified clear byte array using the provided offset and length
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* values. Used only when the SASL server has negotiated
|
* confidentiality/integrity processing.
|
*
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* @param clearBytes
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* The clear byte array to wrap.
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* @param offset
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* The offset into the clear byte array..
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* @param len
|
* The length from the offset of the number of bytes to wrap.
|
* @return A byte array containing the wrapped bytes.
|
* @throws SaslException
|
* If the clear bytes cannot be wrapped.
|
*/
|
byte[] wrap(final byte[] clearBytes, final int offset, final int len)
|
throws SaslException
|
{
|
return saslServer.wrap(clearBytes, offset, len);
|
}
|
|
|
|
/**
|
* This callback is used to process the authorize callback. It is used during
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* both GSSAPI and DIGEST-MD5 processing. When processing the GSSAPI
|
* mechanism, this is the only callback invoked. When processing the
|
* DIGEST-MD5 mechanism, it is the last callback invoked after the name and
|
* password callbacks respectively.
|
*
|
* @param callback
|
* The authorize callback instance to process.
|
*/
|
private void authorizeCallback(final AuthorizeCallback callback)
|
{
|
final String responseAuthzID = callback.getAuthorizationID();
|
|
// If the authEntry is null, then we are processing a GSSAPI SASL bind,
|
// and first need to try to map the authentication ID to an user entry.
|
// The authEntry is never null, when processing a DIGEST-MD5 SASL bind.
|
if (authEntry == null)
|
{
|
final String authid = callback.getAuthenticationID();
|
try
|
{
|
authEntry = identityMapper.getEntryForID(authid);
|
if (authEntry == null)
|
{
|
setCallbackMsg(ERR_SASL_AUTHENTRY_NO_MAPPED_ENTRY.get(authid));
|
callback.setAuthorized(false);
|
return;
|
}
|
}
|
catch (final DirectoryException de)
|
{
|
logger.traceException(de);
|
setCallbackMsg(ERR_SASL_CANNOT_MAP_AUTHENTRY.get(authid,
|
de.getMessage()));
|
callback.setAuthorized(false);
|
return;
|
}
|
userName = authid;
|
}
|
|
if (responseAuthzID.length() == 0)
|
{
|
setCallbackMsg(ERR_SASLDIGESTMD5_EMPTY_AUTHZID.get());
|
callback.setAuthorized(false);
|
}
|
else if (!responseAuthzID.equals(userName))
|
{
|
final String lowerAuthzID = toLowerCase(responseAuthzID);
|
|
// Process the callback differently depending on if the authzid
|
// string begins with the string "dn:" or not.
|
if (lowerAuthzID.startsWith("dn:"))
|
{
|
authzDNCheck(callback);
|
}
|
else
|
{
|
authzIDCheck(callback);
|
}
|
}
|
else
|
{
|
authzEntry = authEntry;
|
callback.setAuthorized(true);
|
}
|
}
|
|
|
|
/**
|
* Process the specified authorize callback. This method is called if the
|
* callback's authorization ID begins with the string "dn:".
|
*
|
* @param callback
|
* The authorize callback to process.
|
*/
|
private void authzDNCheck(final AuthorizeCallback callback)
|
{
|
final String responseAuthzID = callback.getAuthorizationID();
|
DN authzDN;
|
callback.setAuthorized(true);
|
|
try
|
{
|
authzDN = DN.valueOf(responseAuthzID.substring(3));
|
}
|
catch (final DirectoryException e)
|
{
|
logger.traceException(e);
|
setCallbackMsg(ERR_SASL_AUTHZID_INVALID_DN.get(responseAuthzID,
|
e.getMessageObject()));
|
callback.setAuthorized(false);
|
return;
|
}
|
|
final DN actualAuthzDN = DirectoryServer.getActualRootBindDN(authzDN);
|
if (actualAuthzDN != null)
|
{
|
authzDN = actualAuthzDN;
|
}
|
|
if (!authzDN.equals(authEntry.getName()))
|
{
|
if (authzDN.isRootDN())
|
{
|
authzEntry = null;
|
}
|
else
|
{
|
try
|
{
|
authzEntry = DirectoryServer.getEntry(authzDN);
|
if (authzEntry == null)
|
{
|
setCallbackMsg(ERR_SASL_AUTHZID_NO_SUCH_ENTRY.get(authzDN));
|
callback.setAuthorized(false);
|
return;
|
}
|
}
|
catch (final DirectoryException e)
|
{
|
logger.traceException(e);
|
setCallbackMsg(ERR_SASL_AUTHZID_CANNOT_GET_ENTRY.get(authzDN, e.getMessageObject()));
|
callback.setAuthorized(false);
|
return;
|
}
|
}
|
final AuthenticationInfo authInfo = new AuthenticationInfo(authEntry,
|
DirectoryServer.isRootDN(authEntry.getName()));
|
if (!hasPrivilege(authInfo))
|
{
|
callback.setAuthorized(false);
|
}
|
else
|
{
|
callback.setAuthorized(hasPermission(authInfo));
|
}
|
}
|
}
|
|
|
|
/**
|
* Process the specified authorize callback. This method is called if the
|
* callback's authorization ID does not begin with the string "dn:".
|
*
|
* @param callback
|
* The authorize callback to process.
|
*/
|
private void authzIDCheck(final AuthorizeCallback callback)
|
{
|
final String authzid = callback.getAuthorizationID();
|
final String lowerAuthzID = toLowerCase(authzid);
|
String idStr;
|
callback.setAuthorized(true);
|
|
if (lowerAuthzID.startsWith("u:"))
|
{
|
idStr = authzid.substring(2);
|
}
|
else
|
{
|
idStr = authzid;
|
}
|
|
if (idStr.length() == 0)
|
{
|
authzEntry = null;
|
}
|
else
|
{
|
try
|
{
|
authzEntry = identityMapper.getEntryForID(idStr);
|
if (authzEntry == null)
|
{
|
setCallbackMsg(ERR_SASL_AUTHZID_NO_MAPPED_ENTRY.get(authzid));
|
callback.setAuthorized(false);
|
return;
|
}
|
}
|
catch (final DirectoryException e)
|
{
|
logger.traceException(e);
|
setCallbackMsg(ERR_SASL_AUTHZID_NO_MAPPED_ENTRY.get(authzid));
|
callback.setAuthorized(false);
|
return;
|
}
|
}
|
|
if ((authzEntry == null) || (!authzEntry.getName().
|
equals(authEntry.getName())))
|
{
|
// Create temporary authorization information and run it both
|
// through the privilege and then the access control subsystems.
|
final AuthenticationInfo authInfo = new AuthenticationInfo(authEntry,
|
DirectoryServer.isRootDN(authEntry.getName()));
|
if (!hasPrivilege(authInfo))
|
{
|
callback.setAuthorized(false);
|
}
|
else
|
{
|
callback.setAuthorized(hasPermission(authInfo));
|
}
|
}
|
}
|
|
|
|
/**
|
* Helper routine to call the SASL server evaluateResponse method with the
|
* specified ByteString.
|
*
|
* @param response A ByteString containing the response to pass to the
|
* SASL server.
|
* @return A ByteString containing the result of the evaluation.
|
* @throws SaslException
|
* If the SASL server cannot evaluate the byte array.
|
*/
|
private ByteString evaluateResponse(ByteString response) throws SaslException
|
{
|
if (response == null)
|
{
|
response = ByteString.empty();
|
}
|
|
final byte[] evalResponse = saslServer.evaluateResponse(response
|
.toByteArray());
|
if (evalResponse == null)
|
{
|
return ByteString.empty();
|
}
|
else
|
{
|
return ByteString.wrap(evalResponse);
|
}
|
}
|
|
|
|
/**
|
* Try to get a entry from the directory using the specified DN. Used only for
|
* DIGEST-MD5 SASL mechanism.
|
*
|
* @param userDN
|
* The DN of the entry to retrieve from the server.
|
*/
|
private void getAuthEntry(final DN userDN)
|
{
|
final Lock readLock = LockManager.lockRead(userDN);
|
if (readLock == null)
|
{
|
setCallbackMsg(INFO_SASL_CANNOT_LOCK_ENTRY.get(userDN));
|
return;
|
}
|
|
try
|
{
|
authEntry = DirectoryServer.getEntry(userDN);
|
}
|
catch (final DirectoryException e)
|
{
|
logger.traceException(e);
|
setCallbackMsg(ERR_SASL_CANNOT_GET_ENTRY_BY_DN.get(
|
userDN, SASL_MECHANISM_DIGEST_MD5, e.getMessageObject()));
|
}
|
finally
|
{
|
LockManager.unlock(userDN, readLock);
|
}
|
}
|
|
|
|
/**
|
* This method is used to process an exception that is thrown during bind
|
* processing. It will try to determine if the exception is a result of
|
* callback processing, and if it is, will try to use a more informative
|
* failure message set by the callback. If the exception is a result of a
|
* error during the the SASL server processing, the callback message will be
|
* null, and the method will use the specified message parameter as the
|
* failure reason. This is a more cryptic exception message hard-coded in the
|
* SASL server internals. The method also disposes of the SASL server, clears
|
* the authentication state and sets the result code to INVALID_CREDENTIALs
|
*
|
* @param msg
|
* The message to use if the callback message is not null.
|
*/
|
private void handleError(final LocalizableMessage msg)
|
{
|
dispose();
|
final ClientConnection clientConn = bindOp.getClientConnection();
|
clientConn.setSASLAuthStateInfo(null);
|
|
// Check if the callback message is null and use that message if not.
|
if (cbResultCode != null)
|
{
|
bindOp.setResultCode(cbResultCode);
|
}
|
else
|
{
|
bindOp.setResultCode(ResultCode.INVALID_CREDENTIALS);
|
}
|
|
if (cbMsg != null)
|
{
|
bindOp.setAuthFailureReason(cbMsg);
|
}
|
else
|
{
|
bindOp.setAuthFailureReason(msg);
|
}
|
}
|
|
|
|
/**
|
* Checks the specified authentication information parameter against the
|
* access control subsystem to see if it has the "proxy" right.
|
*
|
* @param authInfo
|
* The authentication information to check access on.
|
* @return {@code true} if the authentication information has proxy access.
|
*/
|
private boolean hasPermission(final AuthenticationInfo authInfo)
|
{
|
boolean ret = true;
|
Entry e = authzEntry;
|
|
// If the authz entry is null, use the entry associated with the NULL DN.
|
if (e == null)
|
{
|
try
|
{
|
e = DirectoryServer.getEntry(DN.rootDN());
|
}
|
catch (final DirectoryException ex)
|
{
|
return false;
|
}
|
}
|
|
if (!AccessControlConfigManager.getInstance().getAccessControlHandler()
|
.mayProxy(authInfo.getAuthenticationEntry(), e, bindOp))
|
{
|
setCallbackMsg(ERR_SASL_AUTHZID_INSUFFICIENT_ACCESS.get(authEntry.getName()));
|
ret = false;
|
}
|
|
return ret;
|
}
|
|
|
|
/**
|
* Checks the specified authentication information parameter against the
|
* privilege subsystem to see if it has PROXIED_AUTH privileges.
|
*
|
* @param authInfo
|
* The authentication information to use in the check.
|
* @return {@code true} if the authentication information has PROXIED_AUTH
|
* privileges.
|
*/
|
private boolean hasPrivilege(final AuthenticationInfo authInfo)
|
{
|
boolean ret = true;
|
final InternalClientConnection tempConn = new InternalClientConnection(
|
authInfo);
|
if (!tempConn.hasPrivilege(Privilege.PROXIED_AUTH, bindOp))
|
{
|
setCallbackMsg(ERR_SASL_AUTHZID_INSUFFICIENT_PRIVILEGES.get(authEntry.getName()));
|
ret = false;
|
}
|
return ret;
|
}
|
|
|
|
/**
|
* Initialize the SASL server using parameters specified in the constructor.
|
*/
|
private void initSASLServer() throws SaslException
|
{
|
saslServer = Sasl.createSaslServer(mechanism, SASL_DEFAULT_PROTOCOL,
|
serverFQDN, saslProps, this);
|
if (saslServer == null)
|
{
|
final LocalizableMessage msg = ERR_SASL_CREATE_SASL_SERVER_FAILED.get(mechanism,
|
serverFQDN);
|
throw new SaslException(msg.toString());
|
}
|
}
|
|
|
|
/**
|
* Return true if the SASL server has negotiated with the client to support
|
* confidentiality or integrity.
|
*
|
* @return {@code true} if the context supports confidentiality or integrity.
|
*/
|
private boolean isConfidentialIntegrity()
|
{
|
boolean ret = false;
|
final String qop = (String) saslServer.getNegotiatedProperty(Sasl.QOP);
|
if (qop.equalsIgnoreCase(confidentiality)
|
|| qop.equalsIgnoreCase(integrity))
|
{
|
ret = true;
|
}
|
return ret;
|
}
|
|
|
|
/**
|
* Process the specified name callback. Used only for DIGEST-MD5 SASL
|
* mechanism.
|
*
|
* @param nameCallback
|
* The name callback to process.
|
*/
|
private void nameCallback(final NameCallback nameCallback)
|
{
|
userName = nameCallback.getDefaultName();
|
final String lowerUserName = toLowerCase(userName);
|
|
// Process the user name differently if it starts with the string "dn:".
|
if (lowerUserName.startsWith("dn:"))
|
{
|
DN userDN;
|
try
|
{
|
userDN = DN.valueOf(userName.substring(3));
|
}
|
catch (final DirectoryException e)
|
{
|
logger.traceException(e);
|
setCallbackMsg(ERR_SASL_CANNOT_DECODE_USERNAME_AS_DN.get(mechanism,
|
userName, e.getMessageObject()));
|
return;
|
}
|
|
if (userDN.isRootDN())
|
{
|
setCallbackMsg(ERR_SASL_USERNAME_IS_NULL_DN.get(mechanism));
|
return;
|
}
|
|
final DN rootDN = DirectoryServer.getActualRootBindDN(userDN);
|
if (rootDN != null)
|
{
|
userDN = rootDN;
|
}
|
getAuthEntry(userDN);
|
}
|
else
|
{
|
// The entry name is not a DN, try to map it using the identity
|
// mapper.
|
String entryID = userName;
|
if (lowerUserName.startsWith("u:"))
|
{
|
if (lowerUserName.equals("u:"))
|
{
|
setCallbackMsg(ERR_SASL_ZERO_LENGTH_USERNAME
|
.get(mechanism, mechanism));
|
return;
|
}
|
entryID = userName.substring(2);
|
}
|
try
|
{
|
authEntry = identityMapper.getEntryForID(entryID);
|
}
|
catch (final DirectoryException e)
|
{
|
logger.traceException(e);
|
setCallbackMsg(ERR_SASLDIGESTMD5_CANNOT_MAP_USERNAME.get(userName, e.getMessageObject()));
|
}
|
}
|
/*
|
At this point, the authEntry should not be null.
|
If it is, it's an error, but the password callback will catch it.
|
There is no way to stop the processing from the name callback.
|
*/
|
}
|
|
|
|
/**
|
* Process the specified password callback. Used only for the DIGEST-MD5 SASL
|
* mechanism. The password callback is processed after the name callback.
|
*
|
* @param passwordCallback
|
* The password callback to process.
|
*/
|
private void passwordCallback(final PasswordCallback passwordCallback)
|
{
|
// If there is no authEntry this is an error.
|
if (authEntry == null)
|
{
|
setCallbackMsg(ERR_SASL_NO_MATCHING_ENTRIES.get(userName));
|
return;
|
}
|
|
// Try to get a clear password to use.
|
List<ByteString> clearPasswords;
|
try
|
{
|
final AuthenticationPolicyState authState = AuthenticationPolicyState
|
.forUser(authEntry, false);
|
|
if (!authState.isPasswordPolicy())
|
{
|
final LocalizableMessage message = ERR_SASL_ACCOUNT_NOT_LOCAL.get(mechanism,authEntry.getName());
|
setCallbackMsg(ResultCode.INAPPROPRIATE_AUTHENTICATION, message);
|
return;
|
}
|
|
final PasswordPolicyState pwPolicyState = (PasswordPolicyState) authState;
|
|
clearPasswords = pwPolicyState.getClearPasswords();
|
if ((clearPasswords == null) || clearPasswords.isEmpty())
|
{
|
setCallbackMsg(ERR_SASL_NO_REVERSIBLE_PASSWORDS.get(mechanism, authEntry.getName()));
|
return;
|
}
|
}
|
catch (final Exception e)
|
{
|
logger.traceException(e);
|
setCallbackMsg(ERR_SASL_CANNOT_GET_REVERSIBLE_PASSWORDS.get(authEntry.getName(), mechanism, e));
|
return;
|
}
|
|
// Use the first password.
|
final char[] password = clearPasswords.get(0).toString().toCharArray();
|
passwordCallback.setPassword(password);
|
}
|
|
|
|
/**
|
* This callback is used to process realm information. It is not used.
|
*
|
* @param callback
|
* The realm callback instance to process.
|
*/
|
private void realmCallback(final RealmCallback callback)
|
{
|
}
|
|
|
|
/**
|
* Sets the callback message to the specified message.
|
*
|
* @param cbMsg
|
* The message to set the callback message to.
|
*/
|
private void setCallbackMsg(final LocalizableMessage cbMsg)
|
{
|
setCallbackMsg(ResultCode.INVALID_CREDENTIALS, cbMsg);
|
}
|
|
|
|
/**
|
* Sets the callback message to the specified message.
|
*
|
* @param cbResultCode
|
* The result code.
|
* @param cbMsg
|
* The message.
|
*/
|
private void setCallbackMsg(final ResultCode cbResultCode,
|
final LocalizableMessage cbMsg)
|
{
|
this.cbResultCode = cbResultCode;
|
this.cbMsg = cbMsg;
|
}
|
}
|
