/* * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * 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. */package sun.security.pkcs11;import java.lang.ref.*;import java.util.*;import java.util.concurrent.atomic.AtomicInteger;import java.security.*;import sun.security.pkcs11.wrapper.*;/** * A session object. Sessions are obtained via the SessionManager, * see there for details. Most code will only ever need one method in * this class, the id() method to obtain the session id. * * @author Andreas Sterbenz * @since 1.5 */final class Session implements Comparable<Session> { // time after which to close idle sessions, in milliseconds (3 minutes) private final static long MAX_IDLE_TIME = 3 * 60 * 1000; // token instance final Token token; // session id private final long id; // number of objects created within this session private final AtomicInteger createdObjects; // time this session was last used // not synchronized/volatile for performance, so may be unreliable // this could lead to idle sessions being closed early, but that is harmless private long lastAccess; private final SessionRef sessionRef; Session(Token token, long id) { this.token = token; this.id = id; createdObjects = new AtomicInteger(); id(); sessionRef = new SessionRef(this, id, token); } public int compareTo(Session other) { if (this.lastAccess == other.lastAccess) { return 0; } else { return (this.lastAccess < other.lastAccess) ? -1 : 1; } } boolean isLive(long currentTime) { return currentTime - lastAccess < MAX_IDLE_TIME; } long idInternal() { return id; } long id() { if (token.isPresent(this) == false) { throw new ProviderException("Token has been removed"); } lastAccess = System.currentTimeMillis(); return id; } void addObject() { int n = createdObjects.incrementAndGet(); // XXX update statistics in session manager if n == 1 } void removeObject() { int n = createdObjects.decrementAndGet(); if (n == 0) { token.sessionManager.demoteObjSession(this); } else if (n < 0) { throw new ProviderException("Internal error: objects created " + n); } } boolean hasObjects() { return createdObjects.get() != 0; } void close() { if (hasObjects()) { throw new ProviderException( "Internal error: close session with active objects"); } sessionRef.dispose(); }}/* * NOTE: Use PhantomReference here and not WeakReference * otherwise the sessions maybe closed before other objects * which are still being finalized. */final class SessionRef extends PhantomReference<Session> implements Comparable<SessionRef> { private static ReferenceQueue<Session> refQueue = new ReferenceQueue<Session>(); private static Set<SessionRef> refList = Collections.synchronizedSortedSet(new TreeSet<SessionRef>()); static ReferenceQueue<Session> referenceQueue() { return refQueue; } static int totalCount() { return refList.size(); } private static void drainRefQueueBounded() { while (true) { SessionRef next = (SessionRef) refQueue.poll(); if (next == null) break; next.dispose(); } } // handle to the native session private long id; private Token token; SessionRef(Session session, long id, Token token) { super(session, refQueue); this.id = id; this.token = token; refList.add(this); // TBD: run at some interval and not every time? drainRefQueueBounded(); } void dispose() { refList.remove(this); try { token.p11.C_CloseSession(id); } catch (PKCS11Exception e1) { // ignore } catch (ProviderException e2) { // ignore } finally { this.clear(); } } public int compareTo(SessionRef other) { if (this.id == other.id) { return 0; } else { return (this.id < other.id) ? -1 : 1; } }}
/*
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* 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.
*/
package sun.security.pkcs11;
import java.lang.ref.*;
import java.util.*;
import java.util.concurrent.atomic.AtomicInteger;
import java.security.*;
import sun.security.pkcs11.wrapper.*;
/**
* A session object. Sessions are obtained via the SessionManager,
* see there for details. Most code will only ever need one method in
* this class, the id() method to obtain the session id.
*
* @author Andreas Sterbenz
* @since 1.5
*/
final class Session implements Comparable<Session> {
// time after which to close idle sessions, in milliseconds (3 minutes)
private final static long MAX_IDLE_TIME = 3 * 60 * 1000;
// token instance
final Token token;
// session id
private final long id;
// number of objects created within this session
private final AtomicInteger createdObjects;
// time this session was last used
// not synchronized/volatile for performance, so may be unreliable
// this could lead to idle sessions being closed early, but that is harmless
private long lastAccess;
private final SessionRef sessionRef;
Session(Token token, long id) {
this.token = token;
this.id = id;
createdObjects = new AtomicInteger();
id();
sessionRef = new SessionRef(this, id, token);
}
public int compareTo(Session other) {
if (this.lastAccess == other.lastAccess) {
return 0;
} else {
return (this.lastAccess < other.lastAccess) ? -1 : 1;
}
}
boolean isLive(long currentTime) {
return currentTime - lastAccess < MAX_IDLE_TIME;
}
long idInternal() {
return id;
}
long id() {
if (token.isPresent(this) == false) {
throw new ProviderException("Token has been removed");
}
lastAccess = System.currentTimeMillis();
return id;
}
void addObject() {
int n = createdObjects.incrementAndGet();
// XXX update statistics in session manager if n == 1
}
void removeObject() {
int n = createdObjects.decrementAndGet();
if (n == 0) {
token.sessionManager.demoteObjSession(this);
} else if (n < 0) {
throw new ProviderException("Internal error: objects created " + n);
}
}
boolean hasObjects() {
return createdObjects.get() != 0;
}
void close() {
if (hasObjects()) {
throw new ProviderException(
"Internal error: close session with active objects");
}
sessionRef.dispose();
}
}
/*
* NOTE: Use PhantomReference here and not WeakReference
* otherwise the sessions maybe closed before other objects
* which are still being finalized.
*/
final class SessionRef extends PhantomReference<Session>
implements Comparable<SessionRef> {
private static ReferenceQueue<Session> refQueue =
new ReferenceQueue<Session>();
private static Set<SessionRef> refList =
Collections.synchronizedSortedSet(new TreeSet<SessionRef>());
static ReferenceQueue<Session> referenceQueue() {
return refQueue;
}
static int totalCount() {
return refList.size();
}
private static void drainRefQueueBounded() {
while (true) {
SessionRef next = (SessionRef) refQueue.poll();
if (next == null) break;
next.dispose();
}
}
// handle to the native session
private long id;
private Token token;
SessionRef(Session session, long id, Token token) {
super(session, refQueue);
this.id = id;
this.token = token;
refList.add(this);
// TBD: run at some interval and not every time?
drainRefQueueBounded();
}
void dispose() {
refList.remove(this);
try {
token.p11.C_CloseSession(id);
} catch (PKCS11Exception e1) {
// ignore
} catch (ProviderException e2) {
// ignore
} finally {
this.clear();
}
}
public int compareTo(SessionRef other) {
if (this.id == other.id) {
return 0;
} else {
return (this.id < other.id) ? -1 : 1;
}
}
}