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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 System.Text;
using Qpid.Sasl.Mechanisms;
namespace Qpid.Sasl
{
public class DefaultClientFactory : ISaslClientFactory
{
private static readonly string[] SUPPORTED = new string[] {
DigestSaslClient.Mechanism,
CramMD5SaslClient.Mechanism,
PlainSaslClient.Mechanism,
AnonymousSaslClient.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(PlainSaslClient.Mechanism);
vetoed.Add(AnonymousSaslClient.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
)
{
foreach ( string mech in mechanisms )
{
switch ( mech )
{
case PlainSaslClient.Mechanism:
return new PlainSaslClient(authorizationId, props, handler);
case CramMD5SaslClient.Mechanism:
return new CramMD5SaslClient(authorizationId, props, handler);
case AnonymousSaslClient.Mechanism:
return new AnonymousSaslClient(authorizationId, props, handler);
case DigestSaslClient.Mechanism:
return new DigestSaslClient(authorizationId, serverName, protocol, props, handler);
}
}
// unknown mechanism
return null;
}
} // class DefaultClientFactory
} // namespace Qpid.Sasl
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