85 lines
3.2 KiB
Java
85 lines
3.2 KiB
Java
/*
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* Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.net.www.protocol.http;
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import java.io.IOException;
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import java.lang.reflect.Constructor;
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import sun.util.logging.PlatformLogger;
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/**
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* This abstract class is a bridge to connect NegotiteAuthentication and
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* NegotiatorImpl, so that JAAS and JGSS calls can be made
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*/
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public abstract class Negotiator {
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static Negotiator getNegotiator(HttpCallerInfo hci) {
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// These lines are equivalent to
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// return new NegotiatorImpl(hci);
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// The current implementation will make sure NegotiatorImpl is not
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// directly referenced when compiling, thus smooth the way of building
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// the J2SE platform where HttpURLConnection is a bootstrap class.
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//
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// Makes NegotiatorImpl, and the security classes it references, a
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// runtime dependency rather than a static one.
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Class<?> clazz;
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Constructor<?> c;
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try {
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clazz = Class.forName("sun.net.www.protocol.http.spnego.NegotiatorImpl", true, null);
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c = clazz.getConstructor(HttpCallerInfo.class);
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} catch (ClassNotFoundException cnfe) {
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finest(cnfe);
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return null;
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} catch (ReflectiveOperationException roe) {
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// if the class is there then something seriously wrong if
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// the constructor is not.
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throw new AssertionError(roe);
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}
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try {
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return (Negotiator) (c.newInstance(hci));
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} catch (ReflectiveOperationException roe) {
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finest(roe);
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Throwable t = roe.getCause();
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if (t != null && t instanceof Exception)
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finest((Exception)t);
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return null;
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}
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}
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public abstract byte[] firstToken() throws IOException;
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public abstract byte[] nextToken(byte[] in) throws IOException;
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private static void finest(Exception e) {
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PlatformLogger logger = HttpURLConnection.getHttpLogger();
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if (logger.isLoggable(PlatformLogger.Level.FINEST)) {
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logger.finest("NegotiateAuthentication: " + e);
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}
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}
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}
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