Interface SaslClientFactory

public interface SaslClientFactory

An interface for creating instances of SaslClient. A class that implements this interface must be thread-safe and handle multiple simultaneous requests. It must also have a public constructor that accepts no arguments.

This interface is not normally accessed directly by a client, which will use the Sasl static methods to create a client instance instead. However, a particular environment may provide and install a new or different SaslClientFactory.

See Also:
SaslClient, Sasl

Method Summary

createSaslClient(String[] mechanisms, String authorizationID, String protocol, String serverName, Map props, CallbackHandler cbh)
Creates a SaslClient using the parameters supplied.
getMechanismNames(Map props)
Returns an array of names of mechanisms that match the specified mechanism selection policies.

Method Details


public SaslClient createSaslClient(String[] mechanisms,
                                   String authorizationID,
                                   String protocol,
                                   String serverName,
                                   Map props,
                                   CallbackHandler cbh)
            throws SaslException
Creates a SaslClient using the parameters supplied.
mechanisms - the non-null list of mechanism names to try. Each is the IANA-registered name of a SASL mechanism (e.g. "GSSAPI", "CRAM-MD5").
authorizationID - the possibly null protocol-dependent identification to be used for authorization. If null or empty, the server derives an authorization ID from the client's authentication credentials. When the SASL authentication completes successfully, the specified entity is granted access.
protocol - the non-null string name of the protocol for which the authentication is being performed (e.g. "ldap").
serverName - the non-null fully qualified host name of the server to authenticate to.
props - the possibly null set of properties used to select the SASL mechanism and to configure the authentication exchange of the selected mechanism. See the Sasl class for a list of standard properties. Other, possibly mechanism-specific, properties can be included. Properties not relevant to the selected mechanism are ignored.
cbh - the possibly null callback handler to used by the SASL mechanisms to get further information from the application/library to complete the authentication. For example, a SASL mechanism might require the authentication ID, password and realm from the caller. The authentication ID is requested by using a NameCallback. The password is requested by using a PasswordCallback. The realm is requested by using a RealmChoiceCallback if there is a list of realms to choose from, and by using a RealmCallback if the realm must be entered.
a possibly null SaslClient created using the parameters supplied. If null, this factory cannot produce a SaslClient using the parameters supplied.
SaslException - if a SaslClient instance cannot be created because of an error.


public String[] getMechanismNames(Map props)
Returns an array of names of mechanisms that match the specified mechanism selection policies.
props - the possibly null set of properties used to specify the security policy of the SASL mechanisms. For example, if props contains the Sasl.POLICY_NOPLAINTEXT property with the value "true", then the factory must not return any SASL mechanisms that are susceptible to simple plain passive attacks. See the Sasl class for a complete list of policy properties. Non-policy related properties, if present in props, are ignored.
a non-null array containing IANA-registered SASL mechanism names. Copyright (C) 2003, 2005, Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.