/*
* 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.vysper.xmpp.modules.core.sasl;
import java.util.concurrent.atomic.AtomicInteger;
import org.apache.vysper.xmpp.server.SessionContext;
/**
* used to count authentication retries.
* after the count is down to zero
*
* @author The Apache MINA Project (dev@mina.apache.org)
*/
public class AuthorizationRetriesCounter {
public static final String SESSION_ATTRIBUTE_ABORTION_COUNTER = "authorizationRetriesCounter";
public static AuthorizationRetriesCounter getFromSession(SessionContext sessionContext) {
AuthorizationRetriesCounter counter = (AuthorizationRetriesCounter) sessionContext
.getAttribute(SESSION_ATTRIBUTE_ABORTION_COUNTER);
synchronized (sessionContext) {
if (counter == null) {
int retries = sessionContext.getServerRuntimeContext().getServerFeatures().getAuthenticationRetries();
counter = new AuthorizationRetriesCounter(retries);
sessionContext.putAttribute(SESSION_ATTRIBUTE_ABORTION_COUNTER, counter);
}
}
return counter;
}
public static void removeFromSession(SessionContext sessionContext) {
sessionContext.putAttribute(SESSION_ATTRIBUTE_ABORTION_COUNTER, null);
}
AtomicInteger counter;
public AuthorizationRetriesCounter(int counter) {
if (counter <= 0)
throw new IllegalArgumentException("counter must be positive");
this.counter = new AtomicInteger(counter);
}
public boolean hasTriesLeft() {
return counter.intValue() > 0;
}
/**
*
* @return TRUE has tries left, FALSE has no tries left, should lead to session termination
*/
public boolean countFailedTry() {
if (!hasTriesLeft())
return false;
return counter.decrementAndGet() > 0;
}
public int getTriesLeft() {
return counter.intValue();
}
}