From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- .../gnu/javax/crypto/sasl/srp/ServerStore.java | 177 +++++++++++++++++++++ 1 file changed, 177 insertions(+) create mode 100644 libjava/classpath/gnu/javax/crypto/sasl/srp/ServerStore.java (limited to 'libjava/classpath/gnu/javax/crypto/sasl/srp/ServerStore.java') diff --git a/libjava/classpath/gnu/javax/crypto/sasl/srp/ServerStore.java b/libjava/classpath/gnu/javax/crypto/sasl/srp/ServerStore.java new file mode 100644 index 000000000..d98747324 --- /dev/null +++ b/libjava/classpath/gnu/javax/crypto/sasl/srp/ServerStore.java @@ -0,0 +1,177 @@ +/* ServerStore.java -- + Copyright (C) 2003, 2006 Free Software Foundation, Inc. + +This file is a part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or (at +your option) any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 +USA + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.javax.crypto.sasl.srp; + +import gnu.java.lang.CPStringBuilder; + +import java.util.HashMap; + +/** + * The server-side implementation of the SRP security context store. + */ +public class ServerStore +{ + /** The underlying singleton. */ + private static ServerStore singleton = null; + /** The map of sid --> Security Context record. */ + private static final HashMap sid2ssc = new HashMap(); + /** The map of sid --> Session timing record. */ + private static final HashMap sid2ttl = new HashMap(); + /** A synchronisation lock. */ + private static final Object lock = new Object(); + /** A counter to generate legible SIDs. */ + private static int counter = 0; + + /** Private constructor to enforce Singleton pattern. */ + private ServerStore() + { + super(); + + // TODO: add a cleaning timer thread + } + + /** + * Returns the classloader Singleton. + * + * @return the classloader Singleton instance. + */ + static synchronized final ServerStore instance() + { + if (singleton == null) + singleton = new ServerStore(); + return singleton; + } + + /** + * Returns a legible new session identifier. + * + * @return a new session identifier. + */ + static synchronized final byte[] getNewSessionID() + { + final String sid = String.valueOf(++counter); + return new CPStringBuilder("SID-") + .append("0000000000".substring(0, 10 - sid.length())).append(sid) + .toString().getBytes(); + } + + /** + * Returns a boolean flag indicating if the designated session is still alive + * or not. + * + * @param sid the identifier of the session to check. + * @return true if the designated session is still alive. + * false otherwise. + */ + boolean isAlive(final byte[] sid) + { + boolean result = false; + if (sid != null && sid.length != 0) + { + synchronized (lock) + { + final String key = new String(sid); + final StoreEntry ctx = (StoreEntry) sid2ttl.get(key); + if (ctx != null) + { + result = ctx.isAlive(); + if (! result) // invalidate it en-passant + { + sid2ssc.remove(key); + sid2ttl.remove(key); + } + } + } + } + return result; + } + + /** + * Records a mapping between a session identifier and the Security Context of + * the designated SRP server mechanism instance. + * + * @param ttl the session's Time-To-Live indicator (in seconds). + * @param ctx the server's security context. + */ + void cacheSession(final int ttl, final SecurityContext ctx) + { + synchronized (lock) + { + final String key = new String(ctx.getSID()); + sid2ssc.put(key, ctx); + sid2ttl.put(key, new StoreEntry(ttl)); + } + } + + /** + * Updates the mapping between the designated session identifier and the + * designated server's SASL Security Context. In the process, computes and + * return the underlying mechanism server's evidence that shall be returned to + * the client in a session re-use exchange. + * + * @param sid the identifier of the session to restore. + * @return an SRP server's security context. + */ + SecurityContext restoreSession(final byte[] sid) + { + final String key = new String(sid); + final SecurityContext result; + synchronized (lock) + { + result = (SecurityContext) sid2ssc.remove(key); + sid2ttl.remove(key); + } + return result; + } + + /** + * Removes all information related to the designated session ID. + * + * @param sid the identifier of the seesion to invalidate. + */ + void invalidateSession(final byte[] sid) + { + final String key = new String(sid); + synchronized (lock) + { + sid2ssc.remove(key); + sid2ttl.remove(key); + } + } +} -- cgit v1.2.3