1 /* 2 * Copyright (c) 2014, 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 26 package sun.net; 27 28 import java.net.*; 29 import jdk.net.*; 30 import java.io.IOException; 31 import java.io.FileDescriptor; 32 import java.security.PrivilegedAction; 33 import java.security.AccessController; 34 import java.lang.reflect.Field; 35 import java.util.Set; 36 import java.util.HashSet; 37 import java.util.HashMap; 38 import java.util.Collections; 39 40 /** 41 * Contains the native implementation for extended socket options 42 * together with some other static utilities 43 */ 44 public class ExtendedOptionsImpl { 45 46 static { 47 AccessController.doPrivileged((PrivilegedAction<Void>)() -> { 48 System.loadLibrary("net"); 49 return null; 50 }); 51 init(); 52 } 53 54 private ExtendedOptionsImpl() {} 55 56 public static void checkSetOptionPermission(SocketOption<?> option) { 57 SecurityManager sm = System.getSecurityManager(); 58 if (sm == null) { 59 return; 60 } 61 String check = "setOption." + option.name(); 62 sm.checkPermission(new NetworkPermission(check)); 63 } 64 65 public static void checkGetOptionPermission(SocketOption<?> option) { 66 SecurityManager sm = System.getSecurityManager(); 67 if (sm == null) { 68 return; 69 } 70 String check = "getOption." + option.name(); 71 sm.checkPermission(new NetworkPermission(check)); 72 } 73 74 public static void checkValueType(Object value, Class<?> type) { 75 if (!type.isAssignableFrom(value.getClass())) { 76 String s = "Found: " + value.getClass().toString() + " Expected: " 77 + type.toString(); 78 throw new IllegalArgumentException(s); 79 } 80 } 81 82 private static native void init(); 83 84 /* 85 * Extension native implementations 86 * 87 * SO_FLOW_SLA 88 */ 89 public static native void setFlowOption(FileDescriptor fd, SocketFlow f); 90 public static native void getFlowOption(FileDescriptor fd, SocketFlow f); 91 public static native boolean flowSupported(); 92 }