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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.
*
*/
package org.apache.qpid.transport;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static org.apache.qpid.transport.Connection.State.OPEN;
import javax.security.sasl.Sasl;
import javax.security.sasl.SaslException;
import javax.security.sasl.SaslServer;
import java.util.Collections;
import java.util.List;
import java.util.Map;
/**
* ServerDelegate
*/
public class ServerDelegate extends ConnectionDelegate
{
protected static final Logger _logger = LoggerFactory.getLogger(ServerDelegate.class);
private List<Object> _locales;
private List<Object> _mechanisms;
private Map<String, Object> _clientProperties;
public ServerDelegate()
{
this(null, Collections.emptyList(), Collections.singletonList((Object)"utf8"));
}
protected ServerDelegate(Map<String, Object> clientProperties, List<Object> mechanisms, List<Object> locales)
{
_clientProperties = clientProperties;
_mechanisms = mechanisms;
_locales = locales;
}
public void init(Connection conn, ProtocolHeader hdr)
{
conn.send(new ProtocolHeader(1, 0, 10));
conn.connectionStart(_clientProperties, _mechanisms, _locales);
}
@Override
public void connectionStartOk(Connection conn, ConnectionStartOk ok)
{
conn.setLocale(ok.getLocale());
String mechanism = ok.getMechanism();
if (mechanism == null || mechanism.length() == 0)
{
tuneAuthorizedConnection(conn);
return;
}
try
{
SaslServer ss = createSaslServer(conn, mechanism);
if (ss == null)
{
conn.connectionClose(ConnectionCloseCode.CONNECTION_FORCED,
"null SASL mechanism: " + mechanism);
return;
}
conn.setSaslServer(ss);
secure(conn, ok.getResponse());
}
catch (SaslException e)
{
connectionAuthFailed(conn, e);
}
}
protected SaslServer createSaslServer(Connection conn, String mechanism)
throws SaslException
{
SaslServer ss = Sasl.createSaslServer(mechanism, "AMQP", "localhost", null, null);
return ss;
}
protected void secure(final SaslServer ss, final Connection conn, final byte[] response)
{
try
{
byte[] challenge = ss.evaluateResponse(response);
if (ss.isComplete())
{
ss.dispose();
tuneAuthorizedConnection(conn);
}
else
{
connectionAuthContinue(conn, challenge);
}
}
catch (SaslException e)
{
connectionAuthFailed(conn, e);
}
}
protected void connectionAuthFailed(final Connection conn, Exception e)
{
conn.exception(e);
conn.connectionClose(ConnectionCloseCode.CONNECTION_FORCED, e.getMessage());
}
protected void connectionAuthContinue(final Connection conn, byte[] challenge)
{
conn.connectionSecure(challenge);
}
protected void tuneAuthorizedConnection(final Connection conn)
{
conn.connectionTune
(getChannelMax(),
org.apache.qpid.transport.network.ConnectionBinding.MAX_FRAME_SIZE,
0, getHeartbeatMax());
}
protected void secure(final Connection conn, final byte[] response)
{
final SaslServer ss = conn.getSaslServer();
secure(ss, conn, response);
}
protected int getHeartbeatMax()
{
return 0xFFFF;
}
protected int getChannelMax()
{
return 0xFFFF;
}
@Override
public void connectionSecureOk(Connection conn, ConnectionSecureOk ok)
{
secure(conn, ok.getResponse());
}
@Override
public void connectionTuneOk(Connection conn, ConnectionTuneOk ok)
{
}
@Override
public void connectionOpen(Connection conn, ConnectionOpen open)
{
conn.connectionOpenOk(Collections.emptyList());
conn.setState(OPEN);
}
protected Session getSession(Connection conn, SessionDelegate delegate, SessionAttach atc)
{
return new Session(conn, delegate, new Binary(atc.getName()), 0);
}
public Session getSession(Connection conn, SessionAttach atc)
{
return new Session(conn, new Binary(atc.getName()), 0);
}
@Override
public void sessionAttach(Connection conn, SessionAttach atc)
{
Session ssn = getSession(conn, atc);
conn.map(ssn, atc.getChannel());
conn.registerSession(ssn);
ssn.sessionAttached(atc.getName());
ssn.setState(Session.State.OPEN);
}
protected void setConnectionTuneOkChannelMax(final Connection conn, final int okChannelMax)
{
//0 means no implied limit, except available server resources
//(or that forced by protocol limitations [0xFFFF])
conn.setChannelMax(okChannelMax == 0 ? Connection.MAX_CHANNEL_MAX : okChannelMax);
}
}
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