1 files changed, 99 insertions, 0 deletions
diff --git a/qpid/dotnet/Qpid.Sasl/DefaultClientFactory.cs b/qpid/dotnet/Qpid.Sasl/DefaultClientFactory.cs
new file mode 100644
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+++ b/qpid/dotnet/Qpid.Sasl/DefaultClientFactory.cs
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+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+
+using System;
+using System.Collections;
+
+using Apache.Qpid.Sasl.Mechanisms;
+
+namespace Apache.Qpid.Sasl
+{
+   public class DefaultClientFactory : ISaslClientFactory
+   {
+      private static readonly string[] SUPPORTED = new string[] {
+               DigestSaslClient.Mechanism,
+               CramMD5SaslClient.Mechanism,
+               CramMD5HexSaslClient.Mechanism,
+               PlainSaslClient.Mechanism, 
+               AnonymousSaslClient.Mechanism,
+               ExternalSaslClient.Mechanism,
+            };
+
+      public string[] GetSupportedMechanisms(IDictionary props)
+      {
+         if ( props == null )
+            throw new ArgumentNullException("props");
+
+         ArrayList vetoed = new ArrayList();
+
+         if ( props.Contains(SaslProperties.PolicyNoPlainText) ||
+             props.Contains(SaslProperties.PolicyNoDictionary) ||
+             props.Contains(SaslProperties.PolicyNoActive) ||
+             props.Contains(SaslProperties.PolicyForwardSecrecy) ||
+             props.Contains(SaslProperties.PolicyPassCredentials) )
+         {
+            vetoed.Add(CramMD5SaslClient.Mechanism);
+            vetoed.Add(CramMD5HexSaslClient.Mechanism);
+            vetoed.Add(PlainSaslClient.Mechanism);
+            vetoed.Add(AnonymousSaslClient.Mechanism);
+            vetoed.Add(ExternalSaslClient.Mechanism);
+         } 
+         if ( props.Contains(SaslProperties.PolicyNoAnonymous) )
+         {
+            vetoed.Add(AnonymousSaslClient.Mechanism);
+         }
+
+         ArrayList available = new ArrayList();
+         foreach ( string mech in SUPPORTED )
+         {
+            if ( !vetoed.Contains(mech) )
+               available.Add(mech);
+         }
+         return (string[])available.ToArray(typeof(string));
+      }
+
+      public ISaslClient CreateClient(
+         string[] mechanisms, string authorizationId,
+         string protocol, string serverName, 
+         IDictionary props, ISaslCallbackHandler handler
+         )
+      {
+         IList mechs = mechanisms;
+         if ( mechs.Contains(ExternalSaslClient.Mechanism) )
+            return new ExternalSaslClient(authorizationId, props, handler);
+         if ( mechs.Contains(DigestSaslClient.Mechanism) )
+            return new DigestSaslClient(authorizationId, serverName, protocol, props, handler);
+         if ( mechs.Contains(CramMD5SaslClient.Mechanism) )
+            return new CramMD5SaslClient(authorizationId, props, handler);
+         if ( mechs.Contains(CramMD5HexSaslClient.Mechanism) )
+            return new CramMD5HexSaslClient(authorizationId, props, handler);
+         if ( mechs.Contains(PlainSaslClient.Mechanism) )
+            return new PlainSaslClient(authorizationId, props, handler);
+         if ( mechs.Contains(AnonymousSaslClient.Mechanism) )
+            return new AnonymousSaslClient(authorizationId, props, handler);
+         // unknown mechanism
+         return null;
+      }
+   } // class DefaultClientFactory
+
+} // namespace Apache.Qpid.Sasl
+
+