|
| 1 | +/* |
| 2 | + * Copyright 2016 The Netty Project |
| 3 | + * |
| 4 | + * The Netty Project licenses this file to you under the Apache License, |
| 5 | + * version 2.0 (the "License"); you may not use this file except in compliance |
| 6 | + * with the License. You may obtain a copy of the License at: |
| 7 | + * |
| 8 | + * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | + * |
| 10 | + * Unless required by applicable law or agreed to in writing, software |
| 11 | + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 12 | + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 13 | + * License for the specific language governing permissions and limitations |
| 14 | + * under the License. |
| 15 | + */ |
| 16 | +package io.netty.util.internal; |
| 17 | + |
| 18 | +import java.io.IOException; |
| 19 | +import java.net.InetAddress; |
| 20 | +import java.net.InetSocketAddress; |
| 21 | +import java.net.NetworkInterface; |
| 22 | +import java.net.ServerSocket; |
| 23 | +import java.net.Socket; |
| 24 | +import java.net.SocketAddress; |
| 25 | +import java.net.SocketException; |
| 26 | +import java.net.SocketPermission; |
| 27 | +import java.net.UnknownHostException; |
| 28 | +import java.nio.channels.DatagramChannel; |
| 29 | +import java.nio.channels.ServerSocketChannel; |
| 30 | +import java.nio.channels.SocketChannel; |
| 31 | +import java.security.AccessController; |
| 32 | +import java.security.PrivilegedAction; |
| 33 | +import java.security.PrivilegedActionException; |
| 34 | +import java.security.PrivilegedExceptionAction; |
| 35 | +import java.util.Enumeration; |
| 36 | + |
| 37 | +/** |
| 38 | + * Provides socket operations with privileges enabled. This is necessary for applications that use the |
| 39 | + * {@link SecurityManager} to restrict {@link SocketPermission} to their application. By asserting that these |
| 40 | + * operations are privileged, the operations can proceed even if some code in the calling chain lacks the appropriate |
| 41 | + * {@link SocketPermission}. |
| 42 | + */ |
| 43 | +public final class SocketUtils2 { |
| 44 | + |
| 45 | + private SocketUtils2() { |
| 46 | + } |
| 47 | + |
| 48 | + public static void connect(final Socket socket, final SocketAddress remoteAddress, final int timeout) |
| 49 | + throws IOException { |
| 50 | + try { |
| 51 | + AccessController.doPrivileged(new PrivilegedExceptionAction<Void>() { |
| 52 | + @Override |
| 53 | + public Void run() throws IOException { |
| 54 | + socket.connect(remoteAddress, timeout); |
| 55 | + return null; |
| 56 | + } |
| 57 | + }); |
| 58 | + } catch (PrivilegedActionException e) { |
| 59 | + throw (IOException) e.getCause(); |
| 60 | + } |
| 61 | + } |
| 62 | + |
| 63 | + public static void bind(final Socket socket, final SocketAddress bindpoint) throws IOException { |
| 64 | + try { |
| 65 | + AccessController.doPrivileged(new PrivilegedExceptionAction<Void>() { |
| 66 | + @Override |
| 67 | + public Void run() throws IOException { |
| 68 | + socket.bind(bindpoint); |
| 69 | + return null; |
| 70 | + } |
| 71 | + }); |
| 72 | + } catch (PrivilegedActionException e) { |
| 73 | + throw (IOException) e.getCause(); |
| 74 | + } |
| 75 | + } |
| 76 | + |
| 77 | + public static boolean connect(final SocketChannel socketChannel, final SocketAddress remoteAddress) |
| 78 | + throws IOException { |
| 79 | + try { |
| 80 | + return AccessController.doPrivileged(new PrivilegedExceptionAction<Boolean>() { |
| 81 | + @Override |
| 82 | + public Boolean run() throws IOException { |
| 83 | + return socketChannel.connect(remoteAddress); |
| 84 | + } |
| 85 | + }); |
| 86 | + } catch (PrivilegedActionException e) { |
| 87 | + throw (IOException) e.getCause(); |
| 88 | + } |
| 89 | + } |
| 90 | + |
| 91 | + public static void bind(final SocketChannel socketChannel, final SocketAddress address) throws IOException { |
| 92 | + try { |
| 93 | + AccessController.doPrivileged(new PrivilegedExceptionAction<Void>() { |
| 94 | + @Override |
| 95 | + public Void run() throws IOException { |
| 96 | + socketChannel.bind(address); |
| 97 | + return null; |
| 98 | + } |
| 99 | + }); |
| 100 | + } catch (PrivilegedActionException e) { |
| 101 | + throw (IOException) e.getCause(); |
| 102 | + } |
| 103 | + } |
| 104 | + |
| 105 | + public static SocketChannel accept(final ServerSocketChannel serverSocketChannel) throws IOException { |
| 106 | + try { |
| 107 | + return AccessController.doPrivileged(new PrivilegedExceptionAction<SocketChannel>() { |
| 108 | + @Override |
| 109 | + public SocketChannel run() throws IOException { |
| 110 | + return serverSocketChannel.accept(); |
| 111 | + } |
| 112 | + }); |
| 113 | + } catch (PrivilegedActionException e) { |
| 114 | + throw (IOException) e.getCause(); |
| 115 | + } |
| 116 | + } |
| 117 | + |
| 118 | + public static void bind(final DatagramChannel networkChannel, final SocketAddress address) throws IOException { |
| 119 | + try { |
| 120 | + AccessController.doPrivileged(new PrivilegedExceptionAction<Void>() { |
| 121 | + @Override |
| 122 | + public Void run() throws IOException { |
| 123 | + networkChannel.bind(address); |
| 124 | + return null; |
| 125 | + } |
| 126 | + }); |
| 127 | + } catch (PrivilegedActionException e) { |
| 128 | + throw (IOException) e.getCause(); |
| 129 | + } |
| 130 | + } |
| 131 | + |
| 132 | + public static SocketAddress localSocketAddress(final ServerSocket socket) { |
| 133 | + return AccessController.doPrivileged(new PrivilegedAction<SocketAddress>() { |
| 134 | + @Override |
| 135 | + public SocketAddress run() { |
| 136 | + return socket.getLocalSocketAddress(); |
| 137 | + } |
| 138 | + }); |
| 139 | + } |
| 140 | + |
| 141 | + public static InetAddress addressByName(final String hostname) throws UnknownHostException { |
| 142 | + try { |
| 143 | + return AccessController.doPrivileged(new PrivilegedExceptionAction<InetAddress>() { |
| 144 | + @Override |
| 145 | + public InetAddress run() throws UnknownHostException { |
| 146 | + return InetAddress.getByName(hostname); |
| 147 | + } |
| 148 | + }); |
| 149 | + } catch (PrivilegedActionException e) { |
| 150 | + throw (UnknownHostException) e.getCause(); |
| 151 | + } |
| 152 | + } |
| 153 | + |
| 154 | + public static InetAddress[] allAddressesByName(final String hostname) throws UnknownHostException { |
| 155 | + try { |
| 156 | + return AccessController.doPrivileged(new PrivilegedExceptionAction<InetAddress[]>() { |
| 157 | + @Override |
| 158 | + public InetAddress[] run() throws UnknownHostException { |
| 159 | + return InetAddress.getAllByName(hostname); |
| 160 | + } |
| 161 | + }); |
| 162 | + } catch (PrivilegedActionException e) { |
| 163 | + throw (UnknownHostException) e.getCause(); |
| 164 | + } |
| 165 | + } |
| 166 | + |
| 167 | + public static InetSocketAddress socketAddress(final String hostname, final int port) { |
| 168 | + return AccessController.doPrivileged(new PrivilegedAction<InetSocketAddress>() { |
| 169 | + @Override |
| 170 | + public InetSocketAddress run() { |
| 171 | + return new InetSocketAddress(hostname, port); |
| 172 | + } |
| 173 | + }); |
| 174 | + } |
| 175 | + |
| 176 | + public static Enumeration<InetAddress> addressesFromNetworkInterface(final NetworkInterface intf) { |
| 177 | + return AccessController.doPrivileged(new PrivilegedAction<Enumeration<InetAddress>>() { |
| 178 | + @Override |
| 179 | + public Enumeration<InetAddress> run() { |
| 180 | + return intf.getInetAddresses(); |
| 181 | + } |
| 182 | + }); |
| 183 | + } |
| 184 | + |
| 185 | + public static InetAddress loopbackAddress() { |
| 186 | + return AccessController.doPrivileged(new PrivilegedAction<InetAddress>() { |
| 187 | + @Override |
| 188 | + public InetAddress run() { |
| 189 | + if (PlatformDependent.javaVersion() >= 7) { |
| 190 | + return InetAddress.getLoopbackAddress(); |
| 191 | + } |
| 192 | + try { |
| 193 | + return InetAddress.getByName(null); |
| 194 | + } catch (UnknownHostException e) { |
| 195 | + throw new IllegalStateException(e); |
| 196 | + } |
| 197 | + } |
| 198 | + }); |
| 199 | + } |
| 200 | + |
| 201 | + public static byte[] hardwareAddressFromNetworkInterface(final NetworkInterface intf) throws SocketException { |
| 202 | + try { |
| 203 | + return AccessController.doPrivileged(new PrivilegedExceptionAction<byte[]>() { |
| 204 | + @Override |
| 205 | + public byte[] run() throws SocketException { |
| 206 | + return intf.getHardwareAddress(); |
| 207 | + } |
| 208 | + }); |
| 209 | + } catch (PrivilegedActionException e) { |
| 210 | + throw (SocketException) e.getCause(); |
| 211 | + } |
| 212 | + } |
| 213 | +} |
0 commit comments