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Diffstat (limited to 'libjava/classpath/gnu/javax/crypto/sasl/ClientFactory.java')
| -rw-r--r-- | libjava/classpath/gnu/javax/crypto/sasl/ClientFactory.java | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/javax/crypto/sasl/ClientFactory.java b/libjava/classpath/gnu/javax/crypto/sasl/ClientFactory.java new file mode 100644 index 00000000000..ef184632cc4 --- /dev/null +++ b/libjava/classpath/gnu/javax/crypto/sasl/ClientFactory.java @@ -0,0 +1,210 @@ +/* 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.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.HashMap; + +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 +{ + + // Constants and variables + // ------------------------------------------------------------------------- + + // Constructor(s) + // ------------------------------------------------------------------------- + + // implicit 0-arguments constructor + + // Class methods + // ------------------------------------------------------------------------- + + 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; + } + + // Instance methods + // ------------------------------------------------------------------------- + + 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))); + } +}
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