155 lines
6.0 KiB
Java
155 lines
6.0 KiB
Java
/*
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* Copyright 2016 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.util.internal;
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import java.io.IOException;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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import java.net.NetworkInterface;
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import java.net.ServerSocket;
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import java.net.Socket;
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import java.net.SocketAddress;
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import java.net.SocketException;
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import java.net.SocketPermission;
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import java.net.UnknownHostException;
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import java.nio.channels.DatagramChannel;
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import java.nio.channels.ServerSocketChannel;
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import java.nio.channels.SocketChannel;
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import java.security.AccessController;
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import java.security.PrivilegedAction;
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import java.security.PrivilegedActionException;
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import java.security.PrivilegedExceptionAction;
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import java.util.Enumeration;
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/**
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* Provides socket operations with privileges enabled. This is necessary for applications that use the
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* {@link SecurityManager} to restrict {@link SocketPermission} to their application. By asserting that these
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* operations are privileged, the operations can proceed even if some code in the calling chain lacks the appropriate
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* {@link SocketPermission}.
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*/
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public final class SocketUtils {
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private SocketUtils() {
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}
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public static void connect(final Socket socket, final SocketAddress remoteAddress, final int timeout)
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throws IOException {
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try {
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AccessController.doPrivileged((PrivilegedExceptionAction<Void>) () -> {
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socket.connect(remoteAddress, timeout);
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return null;
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});
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} catch (PrivilegedActionException e) {
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throw (IOException) e.getCause();
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}
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}
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public static void bind(final Socket socket, final SocketAddress bindpoint) throws IOException {
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try {
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AccessController.doPrivileged((PrivilegedExceptionAction<Void>) () -> {
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socket.bind(bindpoint);
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return null;
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});
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} catch (PrivilegedActionException e) {
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throw (IOException) e.getCause();
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}
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}
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public static boolean connect(final SocketChannel socketChannel, final SocketAddress remoteAddress)
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throws IOException {
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try {
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return AccessController.doPrivileged((PrivilegedExceptionAction<Boolean>) () ->
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socketChannel.connect(remoteAddress));
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} catch (PrivilegedActionException e) {
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throw (IOException) e.getCause();
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}
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}
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public static void bind(final SocketChannel socketChannel, final SocketAddress address) throws IOException {
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try {
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AccessController.doPrivileged((PrivilegedExceptionAction<Void>) () -> {
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socketChannel.bind(address);
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return null;
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});
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} catch (PrivilegedActionException e) {
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throw (IOException) e.getCause();
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}
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}
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public static SocketChannel accept(final ServerSocketChannel serverSocketChannel) throws IOException {
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try {
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return AccessController.doPrivileged(
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(PrivilegedExceptionAction<SocketChannel>) serverSocketChannel::accept);
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} catch (PrivilegedActionException e) {
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throw (IOException) e.getCause();
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}
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}
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public static void bind(final DatagramChannel networkChannel, final SocketAddress address) throws IOException {
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try {
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AccessController.doPrivileged((PrivilegedExceptionAction<Void>) () -> {
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networkChannel.bind(address);
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return null;
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});
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} catch (PrivilegedActionException e) {
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throw (IOException) e.getCause();
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}
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}
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public static SocketAddress localSocketAddress(final ServerSocket socket) {
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return AccessController.doPrivileged((PrivilegedAction<SocketAddress>) socket::getLocalSocketAddress);
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}
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public static InetAddress addressByName(final String hostname) throws UnknownHostException {
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try {
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return AccessController.doPrivileged((PrivilegedExceptionAction<InetAddress>) () ->
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InetAddress.getByName(hostname));
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} catch (PrivilegedActionException e) {
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throw (UnknownHostException) e.getCause();
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}
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}
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public static InetAddress[] allAddressesByName(final String hostname) throws UnknownHostException {
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try {
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return AccessController.doPrivileged((PrivilegedExceptionAction<InetAddress[]>) () ->
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InetAddress.getAllByName(hostname));
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} catch (PrivilegedActionException e) {
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throw (UnknownHostException) e.getCause();
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}
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}
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public static InetSocketAddress socketAddress(final String hostname, final int port) {
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return AccessController.doPrivileged((PrivilegedAction<InetSocketAddress>) () ->
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new InetSocketAddress(hostname, port));
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}
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public static Enumeration<InetAddress> addressesFromNetworkInterface(final NetworkInterface intf) {
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return AccessController.doPrivileged((PrivilegedAction<Enumeration<InetAddress>>) intf::getInetAddresses);
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}
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public static InetAddress loopbackAddress() {
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return AccessController.doPrivileged((PrivilegedAction<InetAddress>) InetAddress::getLoopbackAddress);
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}
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public static byte[] hardwareAddressFromNetworkInterface(final NetworkInterface intf) throws SocketException {
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try {
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return AccessController.doPrivileged((PrivilegedExceptionAction<byte[]>) intf::getHardwareAddress);
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} catch (PrivilegedActionException e) {
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throw (SocketException) e.getCause();
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}
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}
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}
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