/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
*
* (C) Copyright IBM Corp. 1999 All Rights Reserved.
* Copyright 1997 The Open Group Research Institute. All rights reserved.
*/
/**
* This class provides an efficient caching mechanism to store the timestamp of client authenticators.
* The cache minimizes the memory usage by doing self-cleanup of expired items in the cache.
*
* @author Yanni Zhang
*/
// These 3 fields are now useless, keep for serialization compatibility
/**
* Constructs a ReplayCache for a client principal in specified <code>CacheTable</code>.
* @param p client principal name.
* @param ct CacheTable.
*/
principal = p;
}
/**
* Puts the authenticator timestamp into the cache in descending order.
* @param t <code>AuthTime</code>
*/
if (this.size() == 0) {
addFirst(t);
}
else {
// in most cases, newly received authenticator has
// larger timestamp.
addFirst(t);
}
addFirst(t);
}
}
else {
//unless client clock being re-adjusted.
break;
//we always put the bigger timestamp at the front.
}
break;
}
}
}
}
}
// let us cleanup while we are here
int index = -1;
//search expired timestamps.
break;
}
}
if (index > -1) {
do {
//remove expired timestamps from the list.
removeLast();
}
if (DEBUG) {
printList();
}
}
/**
* Prints out the debug message.
*/
private void printList() {
}
}
}