author | michaelm |
Tue, 29 Oct 2019 19:23:09 +0000 | |
branch | unixdomainchannels |
changeset 58847 | 692de65ab293 |
parent 58801 | 119ac9128c1b |
permissions | -rw-r--r-- |
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/* |
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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.nio.channels.UnixDomainSocketAddress; |
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import java.net.SocketAddress; |
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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, SocketAddress addr) { |
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if (addr instanceof UnixDomainSocketAddress) |
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return ofUnixDomain(e, (UnixDomainSocketAddress)addr); |
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if (!(addr instanceof InetSocketAddress)) |
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return e; |
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InetSocketAddress address = (InetSocketAddress)addr; |
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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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private static IOException ofUnixDomain(IOException e, UnixDomainSocketAddress addr) { |
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if (!enhancedExceptionText || addr == null) |
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return e; |
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String path = addr.getPath(); |
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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(path); |
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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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} |