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| 1 | +/* | |
| 2 | + * Copyright (c) 1996, 2002, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | +package java.rmi.server; | |
| 26 | + | |
| 27 | +import java.rmi.*; | |
| 28 | +import sun.rmi.server.UnicastServerRef; | |
| 29 | +import sun.rmi.runtime.Log; | |
| 30 | + | |
| 31 | +/** | |
| 32 | + * The <code>RemoteServer</code> class is the common superclass to server | |
| 33 | + * implementations and provides the framework to support a wide range | |
| 34 | + * of remote reference semantics. Specifically, the functions needed | |
| 35 | + * to create and export remote objects (i.e. to make them remotely | |
| 36 | + * available) are provided abstractly by <code>RemoteServer</code> and | |
| 37 | + * concretely by its subclass(es). | |
| 38 | + * | |
| 39 | + * @author Ann Wollrath | |
| 40 | + * @since JDK1.1 | |
| 41 | + */ | |
| 42 | +public abstract class RemoteServer extends RemoteObject | |
| 43 | +{ | |
| 44 | + /* indicate compatibility with JDK 1.1.x version of class */ | |
| 45 | + private static final long serialVersionUID = -4100238210092549637L; | |
| 46 | + | |
| 47 | + /** | |
| 48 | + * Constructs a <code>RemoteServer</code>. | |
| 49 | + * @since JDK1.1 | |
| 50 | + */ | |
| 51 | + protected RemoteServer() { | |
| 52 | + super(); | |
| 53 | + } | |
| 54 | + | |
| 55 | + /** | |
| 56 | + * Constructs a <code>RemoteServer</code> with the given reference type. | |
| 57 | + * | |
| 58 | + * @param ref the remote reference | |
| 59 | + * @since JDK1.1 | |
| 60 | + */ | |
| 61 | + protected RemoteServer(RemoteRef ref) { | |
| 62 | + super(ref); | |
| 63 | + } | |
| 64 | + | |
| 65 | + /** | |
| 66 | + * Returns a string representation of the client host for the | |
| 67 | + * remote method invocation being processed in the current thread. | |
| 68 | + * | |
| 69 | + * @return a string representation of the client host | |
| 70 | + * | |
| 71 | + * @throws ServerNotActiveException if no remote method invocation | |
| 72 | + * is being processed in the current thread | |
| 73 | + * | |
| 74 | + * @since JDK1.1 | |
| 75 | + */ | |
| 76 | + public static String getClientHost() throws ServerNotActiveException { | |
| 77 | + return sun.rmi.transport.tcp.TCPTransport.getClientHost(); | |
| 78 | + } | |
| 79 | + | |
| 80 | + /** | |
| 81 | + * Log RMI calls to the output stream <code>out</code>. If | |
| 82 | + * <code>out</code> is <code>null</code>, call logging is turned off. | |
| 83 | + * | |
| 84 | + * <p>If there is a security manager, its | |
| 85 | + * <code>checkPermission</code> method will be invoked with a | |
| 86 | + * <code>java.util.logging.LoggingPermission("control")</code> | |
| 87 | + * permission; this could result in a <code>SecurityException</code>. | |
| 88 | + * | |
| 89 | + * @param out the output stream to which RMI calls should be logged | |
| 90 | + * @throws SecurityException if there is a security manager and | |
| 91 | + * the invocation of its <code>checkPermission</code> method | |
| 92 | + * fails | |
| 93 | + * @see #getLog | |
| 94 | + * @since JDK1.1 | |
| 95 | + */ | |
| 96 | + public static void setLog(java.io.OutputStream out) | |
| 97 | + { | |
| 98 | + logNull = (out == null); | |
| 99 | + UnicastServerRef.callLog.setOutputStream(out); | |
| 100 | + } | |
| 101 | + | |
| 102 | + /** | |
| 103 | + * Returns stream for the RMI call log. | |
| 104 | + * @return the call log | |
| 105 | + * @see #setLog | |
| 106 | + * @since JDK1.1 | |
| 107 | + */ | |
| 108 | + public static java.io.PrintStream getLog() | |
| 109 | + { | |
| 110 | + return (logNull ? null : UnicastServerRef.callLog.getPrintStream()); | |
| 111 | + } | |
| 112 | + | |
| 113 | + // initialize log status | |
| 114 | + private static boolean logNull = !UnicastServerRef.logCalls; | |
| 115 | +} | |