--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/com/sun/security/sasl/gsskerb/GssKrb5Base.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,131 @@
+/*
+ * Copyright 2003-2004 Sun Microsystems, Inc.  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.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+
+package com.sun.security.sasl.gsskerb;
+
+import java.io.IOException;
+import java.util.Map;
+import java.util.logging.Logger;
+import java.util.logging.Level;
+import javax.security.sasl.*;
+import com.sun.security.sasl.util.AbstractSaslImpl;
+import org.ietf.jgss.*;
+
+abstract class GssKrb5Base extends AbstractSaslImpl {
+
+    private static final String KRB5_OID_STR = "1.2.840.113554.1.2.2";
+    protected static Oid KRB5_OID;
+    protected static final byte[] EMPTY = new byte[0];
+
+    static {
+        try {
+            KRB5_OID = new Oid(KRB5_OID_STR);
+        } catch (GSSException ignore) {}
+    }
+
+    protected GSSContext secCtx = null;
+    protected MessageProp msgProp;              // QOP and privacy for unwrap
+    protected static final int JGSS_QOP = 0;    // unrelated to SASL QOP mask
+
+    protected GssKrb5Base(Map props, String className) throws SaslException {
+        super(props, className);
+    }
+
+    /**
+     * Retrieves this mechanism's name.
+     *
+     * @return  The string "GSSAPI".
+     */
+    public String getMechanismName() {
+        return "GSSAPI";
+    }
+
+    public byte[] unwrap(byte[] incoming, int start, int len)
+        throws SaslException {
+        if (!completed) {
+            throw new IllegalStateException("GSSAPI authentication not completed");
+        }
+
+        // integrity will be true if either privacy or integrity negotiated
+        if (!integrity) {
+            throw new IllegalStateException("No security layer negotiated");
+        }
+
+        try {
+            byte[] answer = secCtx.unwrap(incoming, start, len, msgProp);
+            if (logger.isLoggable(Level.FINEST)) {
+                traceOutput(myClassName, "KRB501:Unwrap", "incoming: ",
+                    incoming, start, len);
+                traceOutput(myClassName, "KRB502:Unwrap", "unwrapped: ",
+                    answer, 0, answer.length);
+            }
+            return answer;
+        } catch (GSSException e) {
+            throw new SaslException("Problems unwrapping SASL buffer", e);
+        }
+    }
+
+    public byte[] wrap(byte[] outgoing, int start, int len) throws SaslException {
+        if (!completed) {
+            throw new IllegalStateException("GSSAPI authentication not completed");
+        }
+
+        // integrity will be true if either privacy or integrity negotiated
+        if (!integrity) {
+            throw new IllegalStateException("No security layer negotiated");
+        }
+
+        // Generate GSS token
+        try {
+            byte[] answer = secCtx.wrap(outgoing, start, len, msgProp);
+            if (logger.isLoggable(Level.FINEST)) {
+                traceOutput(myClassName, "KRB503:Wrap", "outgoing: ",
+                    outgoing, start, len);
+                traceOutput(myClassName, "KRB504:Wrap", "wrapped: ",
+                    answer, 0, answer.length);
+            }
+            return answer;
+
+        } catch (GSSException e) {
+            throw new SaslException("Problem performing GSS wrap", e);
+        }
+    }
+
+    public void dispose() throws SaslException {
+        if (secCtx != null) {
+            try {
+                secCtx.dispose();
+            } catch (GSSException e) {
+                throw new SaslException("Problem disposing GSS context", e);
+            }
+            secCtx = null;
+        }
+    }
+
+    protected void finalize() throws Throwable {
+        dispose();
+    }
+}