1 /*
2 * Copyright (c) 2007, 2016, 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 package java.net;
26
27 import java.io.IOException;
28 import java.io.FileDescriptor;
29 import java.util.Set;
30 import java.util.HashSet;
31 import sun.net.ext.ExtendedSocketOptions;
32
33 /*
34 * On Unix systems we simply delegate to native methods.
35 *
36 * @author Chris Hegarty
37 */
38
39 class PlainSocketImpl extends AbstractPlainSocketImpl
40 {
41 static {
42 initProto();
43 }
44
45 /**
46 * Constructs an empty instance.
47 */
48 PlainSocketImpl() { }
49
50 /**
51 * Constructs an instance with the given file descriptor.
52 */
53 PlainSocketImpl(FileDescriptor fd) {
54 this.fd = fd;
55 }
56
57 static final ExtendedSocketOptions extendedOptions =
58 ExtendedSocketOptions.getInstance();
59
60 protected <T> void setOption(SocketOption<T> name, T value) throws IOException {
61 if (!extendedOptions.isOptionSupported(name)) {
62 if (!name.equals(StandardSocketOptions.SO_REUSEPORT)) {
63 super.setOption(name, value);
64 } else {
65 if (supportedOptions().contains(name)) {
66 super.setOption(name, value);
67 } else {
68 throw new UnsupportedOperationException("unsupported option");
69 }
70 }
71 } else {
72 if (isClosedOrPending()) {
73 throw new SocketException("Socket closed");
74 }
75 extendedOptions.setOption(fd, name, value);
76 }
77 }
78
79 @SuppressWarnings("unchecked")
80 protected <T> T getOption(SocketOption<T> name) throws IOException {
81 if (!extendedOptions.isOptionSupported(name)) {
82 if (!name.equals(StandardSocketOptions.SO_REUSEPORT)) {
83 return super.getOption(name);
84 } else {
85 if (supportedOptions().contains(name)) {
86 return super.getOption(name);
87 } else {
88 throw new UnsupportedOperationException("unsupported option");
89 }
90 }
91 } else {
92 if (isClosedOrPending()) {
93 throw new SocketException("Socket closed");
94 }
95 return (T) extendedOptions.getOption(fd, name);
96 }
97 }
98
99 protected Set<SocketOption<?>> supportedOptions() {
100 HashSet<SocketOption<?>> options = new HashSet<>(super.supportedOptions());
101 addExtSocketOptions(extendedOptions.options(), options);
102 return options;
103 }
104
105 private void addExtSocketOptions(Set<SocketOption<?>> extOptions,
106 Set<SocketOption<?>> options) {
107 for (SocketOption<?> option : extOptions) {
108 if (option.name().equals("SO_FLOW_SLA")) {
109 // SO_FLOW_SLA is Solaris specific option whis is not applicable
110 // for ServerSockets.
111 // getSocket() will always return null for server socket
112 if (getSocket() != null) {
113 options.add(option);
114 }
115 }
116 options.add(option);
117 }
118 }
119 protected void socketSetOption(int opt, boolean b, Object val) throws SocketException {
120 if (opt == SocketOptions.SO_REUSEPORT &&
121 !supportedOptions().contains(StandardSocketOptions.SO_REUSEPORT)) {
122 throw new UnsupportedOperationException("unsupported option");
123 }
124 try {
125 socketSetOption0(opt, b, val);
126 } catch (SocketException se) {
127 if (socket == null || !socket.isConnected())
128 throw se;
129 }
130 }
131
132 native void socketCreate(boolean isServer) throws IOException;
133
134 native void socketConnect(InetAddress address, int port, int timeout)
135 throws IOException;
136
137 native void socketBind(InetAddress address, int port)
138 throws IOException;
139
140 native void socketListen(int count) throws IOException;
141
142 native void socketAccept(SocketImpl s) throws IOException;
143
144 native int socketAvailable() throws IOException;
145
146 native void socketClose0(boolean useDeferredClose) throws IOException;
147
148 native void socketShutdown(int howto) throws IOException;
149
150 static native void initProto();
151
152 native void socketSetOption0(int cmd, boolean on, Object value)
153 throws SocketException;
154
155 native int socketGetOption(int opt, Object iaContainerObj) throws SocketException;
156
157 native void socketSendUrgentData(int data) throws IOException;
158 }