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+/* ServerFactory.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.AnonymousServer;
+import gnu.javax.crypto.sasl.crammd5.CramMD5Server;
+import gnu.javax.crypto.sasl.plain.PlainServer;
+import gnu.javax.crypto.sasl.srp.SRPServer;
+
+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.SaslException;
+import javax.security.sasl.SaslServer;
+import javax.security.sasl.SaslServerFactory;
+
+/**
+ * The implementation of the {@link SaslServerFactory}.
+ */
+public class ServerFactory
+ implements SaslServerFactory
+{
+ // 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 };
+ List result = new ArrayList(4);
+ int i;
+ for (i = 0; i < all.length;)
+ result.add(all[i++]);
+ if (props == null)
+ return (String[]) result.toArray(new String[0]); // all
+ if (hasPolicy(Sasl.POLICY_PASS_CREDENTIALS, props)) // none
+ return new String[0];
+ 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 ServerMechanism getInstance(String mechanism)
+ {
+ if (mechanism == null)
+ return null;
+ mechanism = mechanism.trim().toUpperCase();
+ if (mechanism.equals(Registry.SASL_SRP_MECHANISM))
+ return new SRPServer();
+ if (mechanism.equals(Registry.SASL_CRAM_MD5_MECHANISM))
+ return new CramMD5Server();
+ if (mechanism.equals(Registry.SASL_PLAIN_MECHANISM))
+ return new PlainServer();
+ if (mechanism.equals(Registry.SASL_ANONYMOUS_MECHANISM))
+ return new AnonymousServer();
+ return null;
+ }
+
+ public SaslServer createSaslServer(String mechanism, String protocol,
+ String serverName, Map props,
+ CallbackHandler cbh) throws SaslException
+ {
+ ServerMechanism result = getInstance(mechanism);
+ if (result != null)
+ {
+ HashMap attributes = new HashMap();
+ if (props != null)
+ attributes.putAll(props);
+ 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;
+ }
+
+ public String[] getMechanismNames(Map props)
+ {
+ return getNamesInternal(props);
+ }
+
+ private static boolean hasPolicy(String propertyName, Map props)
+ {
+ return "true".equalsIgnoreCase(String.valueOf(props.get(propertyName)));
+ }
+}