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 java.util.Collections;
32 import jdk.net.*;
33
34 import static sun.net.ExtendedOptionsImpl.*;
35
36 /*
37 * On Unix systems we simply delegate to native methods.
38 *
39 * @author Chris Hegarty
40 */
41
42 class PlainSocketImpl extends AbstractPlainSocketImpl
43 {
44 static {
45 initProto();
46 }
47
48 /**
49 * Constructs an empty instance.
50 */
51 PlainSocketImpl() { }
52
53 /**
54 * Constructs an instance with the given file descriptor.
55 */
56 PlainSocketImpl(FileDescriptor fd) {
57 this.fd = fd;
58 }
59
60 protected <T> void setOption(SocketOption<T> name, T value) throws IOException {
61 if (!name.equals(ExtendedSocketOptions.SO_FLOW_SLA)) {
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 (getSocket() == null || !flowSupported()) {
73 throw new UnsupportedOperationException("unsupported option");
74 }
75 if (isClosedOrPending()) {
76 throw new SocketException("Socket closed");
77 }
78 checkSetOptionPermission(name);
79 checkValueType(value, SocketFlow.class);
80 setFlowOption(getFileDescriptor(), (SocketFlow)value);
81 }
82 }
83
84 @SuppressWarnings("unchecked")
85 protected <T> T getOption(SocketOption<T> name) throws IOException {
86 if (!name.equals(ExtendedSocketOptions.SO_FLOW_SLA)) {
87 if (!name.equals(StandardSocketOptions.SO_REUSEPORT)) {
88 return super.getOption(name);
89 } else {
90 if (supportedOptions().contains(name)) {
91 return super.getOption(name);
92 } else {
93 throw new UnsupportedOperationException("unsupported option");
94 }
95 }
96 }
97 if (getSocket() == null || !flowSupported()) {
98 throw new UnsupportedOperationException("unsupported option");
99 }
100 if (isClosedOrPending()) {
101 throw new SocketException("Socket closed");
102 }
103 checkGetOptionPermission(name);
104 SocketFlow flow = SocketFlow.create();
105 getFlowOption(getFileDescriptor(), flow);
106 return (T)flow;
107 }
108
109 protected Set<SocketOption<?>> supportedOptions() {
110 HashSet<SocketOption<?>> options = new HashSet<>(
111 super.supportedOptions());
112
113 if (getSocket() != null && flowSupported()) {
114 options.add(ExtendedSocketOptions.SO_FLOW_SLA);
115 }
116 return options;
117 }
118
119 protected void socketSetOption(int opt, boolean b, Object val) throws SocketException {
120 if (opt == SocketOptions.SO_REUSEPORT && !supportedOptions().contains(StandardSocketOptions.SO_REUSEPORT)) {
121 throw new UnsupportedOperationException("unsupported option");
122 }
123 try {
124 socketSetOption0(opt, b, val);
125 } catch (SocketException se) {
126 if (socket == null || !socket.isConnected())
127 throw se;
128 }
129 }
130
131 native void socketCreate(boolean isServer) throws IOException;
132
133 native void socketConnect(InetAddress address, int port, int timeout)
134 throws IOException;
135
136 native void socketBind(InetAddress address, int port)
137 throws IOException;
138
139 native void socketListen(int count) throws IOException;
140
141 native void socketAccept(SocketImpl s) throws IOException;
142
143 native int socketAvailable() throws IOException;
144
145 native void socketClose0(boolean useDeferredClose) throws IOException;
146
147 native void socketShutdown(int howto) throws IOException;
148
149 static native void initProto();
150
151 native void socketSetOption0(int cmd, boolean on, Object value)
152 throws SocketException;
153
154 native int socketGetOption(int opt, Object iaContainerObj) throws SocketException;
155
156 native void socketSendUrgentData(int data) throws IOException;
157 }