| /* ClientFactory.java -- |
| Copyright (C) 2003, 2006 Free Software Foundation, Inc. |
| |
| This file is a 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 of the License, 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; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin St, 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. */ |
| |
| |
| package gnu.javax.crypto.sasl; |
| |
| import gnu.java.security.Registry; |
| import gnu.javax.crypto.sasl.anonymous.AnonymousClient; |
| import gnu.javax.crypto.sasl.crammd5.CramMD5Client; |
| import gnu.javax.crypto.sasl.plain.PlainClient; |
| import gnu.javax.crypto.sasl.srp.SRPClient; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import javax.security.auth.callback.CallbackHandler; |
| import javax.security.sasl.Sasl; |
| import javax.security.sasl.SaslClient; |
| import javax.security.sasl.SaslClientFactory; |
| import javax.security.sasl.SaslException; |
| |
| /** |
| * The implementation of {@link SaslClientFactory}. |
| */ |
| public class ClientFactory |
| implements SaslClientFactory |
| { |
| // implicit 0-arguments constructor |
| |
| public static final Set getNames() |
| { |
| return Collections.unmodifiableSet(new HashSet(Arrays.asList(getNamesInternal(null)))); |
| } |
| |
| private static final String[] getNamesInternal(Map props) |
| { |
| String[] all = new String[] { |
| Registry.SASL_SRP_MECHANISM, |
| Registry.SASL_CRAM_MD5_MECHANISM, |
| Registry.SASL_PLAIN_MECHANISM, |
| Registry.SASL_ANONYMOUS_MECHANISM }; |
| if (props == null) |
| return all; |
| if (hasPolicy(Sasl.POLICY_PASS_CREDENTIALS, props)) |
| return new String[0]; |
| List result = new ArrayList(all.length); |
| for (int i = 0; i < all.length;) |
| result.add(all[i++]); |
| if (hasPolicy(Sasl.POLICY_NOPLAINTEXT, props)) |
| result.remove(Registry.SASL_PLAIN_MECHANISM); |
| if (hasPolicy(Sasl.POLICY_NOACTIVE, props)) |
| { |
| result.remove(Registry.SASL_CRAM_MD5_MECHANISM); |
| result.remove(Registry.SASL_PLAIN_MECHANISM); |
| } |
| if (hasPolicy(Sasl.POLICY_NODICTIONARY, props)) |
| { |
| result.remove(Registry.SASL_CRAM_MD5_MECHANISM); |
| result.remove(Registry.SASL_PLAIN_MECHANISM); |
| } |
| if (hasPolicy(Sasl.POLICY_NOANONYMOUS, props)) |
| { |
| result.remove(Registry.SASL_ANONYMOUS_MECHANISM); |
| } |
| if (hasPolicy(Sasl.POLICY_FORWARD_SECRECY, props)) |
| { |
| result.remove(Registry.SASL_CRAM_MD5_MECHANISM); |
| result.remove(Registry.SASL_ANONYMOUS_MECHANISM); |
| result.remove(Registry.SASL_PLAIN_MECHANISM); |
| } |
| return (String[]) result.toArray(new String[0]); |
| } |
| |
| public static final ClientMechanism getInstance(String mechanism) |
| { |
| if (mechanism == null) |
| return null; |
| mechanism = mechanism.trim().toUpperCase(); |
| if (mechanism.equals(Registry.SASL_SRP_MECHANISM)) |
| return new SRPClient(); |
| if (mechanism.equals(Registry.SASL_CRAM_MD5_MECHANISM)) |
| return new CramMD5Client(); |
| if (mechanism.equals(Registry.SASL_PLAIN_MECHANISM)) |
| return new PlainClient(); |
| if (mechanism.equals(Registry.SASL_ANONYMOUS_MECHANISM)) |
| return new AnonymousClient(); |
| return null; |
| } |
| |
| public SaslClient createSaslClient(String[] mechanisms, |
| String authorisationID, String protocol, |
| String serverName, Map props, |
| CallbackHandler cbh) throws SaslException |
| { |
| ClientMechanism result = null; |
| String mechanism; |
| for (int i = 0; i < mechanisms.length; i++) |
| { |
| mechanism = mechanisms[i]; |
| result = getInstance(mechanism); |
| if (result != null) |
| break; |
| } |
| if (result != null) |
| { |
| HashMap attributes = new HashMap(); |
| if (props != null) |
| attributes.putAll(props); |
| attributes.put(Registry.SASL_AUTHORISATION_ID, authorisationID); |
| attributes.put(Registry.SASL_PROTOCOL, protocol); |
| attributes.put(Registry.SASL_SERVER_NAME, serverName); |
| attributes.put(Registry.SASL_CALLBACK_HANDLER, cbh); |
| result.init(attributes); |
| return result; |
| } |
| throw new SaslException("No supported mechanism found in given mechanism list"); |
| } |
| |
| public String[] getMechanismNames(Map props) |
| { |
| return getNamesInternal(props); |
| } |
| |
| private static boolean hasPolicy(String propertyName, Map props) |
| { |
| return "true".equalsIgnoreCase(String.valueOf(props.get(propertyName))); |
| } |
| } |