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89 lines
3.5 KiB
Java
89 lines
3.5 KiB
Java
/*
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* Copyright (c) 2018, 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.util;
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import java.io.IOException;
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import java.lang.reflect.Constructor;
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import java.net.InetSocketAddress;
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import java.security.AccessController;
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import java.security.PrivilegedAction;
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import sun.security.util.SecurityProperties;
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public final class SocketExceptions {
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private SocketExceptions() {}
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private static final boolean enhancedExceptionText =
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SecurityProperties.includedInExceptions("hostInfo");
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/**
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* Utility which takes an exception and returns either the same exception
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* or a new exception of the same type with the same stack trace
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* and detail message enhanced with addressing information from the
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* given InetSocketAddress.
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*
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* If the system/security property "jdk.includeInExceptions" is not
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* set or does not contain the category hostInfo,
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* then the original exception is returned.
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*
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* Only specific IOException subtypes are supported.
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*/
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public static IOException of(IOException e, InetSocketAddress address) {
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if (!enhancedExceptionText || address == null)
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return e;
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int port = address.getPort();
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String host = address.getHostString();
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StringBuilder sb = new StringBuilder();
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sb.append(e.getMessage());
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sb.append(": ");
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sb.append(host);
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sb.append(':');
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sb.append(Integer.toString(port));
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String enhancedMsg = sb.toString();
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return create(e, enhancedMsg);
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}
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// return a new instance of the same type with the given detail
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// msg, or if the type doesn't support detail msgs, return given
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// instance.
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private static IOException create(IOException e, String msg) {
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return AccessController.doPrivileged(new PrivilegedAction<IOException>() {
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public IOException run() {
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try {
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Class<?> clazz = e.getClass();
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Constructor<?> ctor = clazz.getConstructor(String.class);
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IOException e1 = (IOException)(ctor.newInstance(msg));
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e1.setStackTrace(e.getStackTrace());
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return e1;
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} catch (Exception e0) {
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// Some eg AsynchronousCloseException have no detail msg
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return e;
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}
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}
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});
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}
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}
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