1/*
2 * Copyright (c) 2008, 2016, Oracle and/or its affiliates. All rights reserved.
3 *
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.  Oracle designates this
9 * particular file as subject to the "Classpath" exception as provided
10 * by Oracle in the LICENSE file that accompanied this code.
11 *
12 * This code is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
15 * version 2 for more details (a copy is included in the LICENSE file that
16 * accompanied this code).
17 *
18 * You should have received a copy of the GNU General Public License version
19 * 2 along with this work; if not, write to the Free Software Foundation,
20 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
21 *
22 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
23 * or visit www.oracle.com if you need additional information or have any
24 * questions.
25 *
26 */
27@@END_COPYRIGHT@@
28
29#include <stdio.h>
30#ifdef _WIN32
31#include <winsock2.h>
32#include <ws2tcpip.h>
33#else
34#include <sys/types.h>
35#include <sys/socket.h>
36#include <netinet/in.h>
37#include <netinet/tcp.h>
38#endif
39
40/* Defines SO_REUSEPORT */
41#if !defined(SO_REUSEPORT)
42#ifdef _WIN32
43#define SO_REUSEPORT 0
44#elif __linux__
45#define SO_REUSEPORT 15
46#elif __solaris__
47#define SO_REUSEPORT 0x100e
48#elif defined(AIX) || defined(MACOSX)
49#define SO_REUSEPORT 0x0200
50#else
51#define SO_REUSEPORT 0
52#endif
53#endif
54
55/* On Solaris, "sun" is defined as a macro. Undefine to make package
56   declaration valid */
57#undef sun
58
59/* To be able to name the Java constants the same as the C constants without
60   having the preprocessor rewrite those identifiers, add PREFIX_ to all
61   identifiers matching a C constant. The PREFIX_ is filtered out in the
62   makefile. */
63
64@@START_HERE@@
65
66package sun.nio.ch;
67import java.net.SocketOption;
68import java.net.StandardSocketOptions;
69import java.net.ProtocolFamily;
70import java.net.StandardProtocolFamily;
71import java.util.Map;
72import java.util.HashMap;
73class SocketOptionRegistry {
74
75    private SocketOptionRegistry() { }
76
77    private static class RegistryKey {
78        private final SocketOption<?> name;
79        private final ProtocolFamily family;
80        RegistryKey(SocketOption<?> name, ProtocolFamily family) {
81            this.name = name;
82            this.family = family;
83        }
84        public int hashCode() {
85            return name.hashCode() + family.hashCode();
86        }
87        public boolean equals(Object ob) {
88            if (ob == null) return false;
89            if (!(ob instanceof RegistryKey)) return false;
90            RegistryKey other = (RegistryKey)ob;
91            if (this.name != other.name) return false;
92            if (this.family != other.family) return false;
93            return true;
94        }
95    }
96
97    private static class LazyInitialization {
98
99        static final Map<RegistryKey,OptionKey> options = options();
100
101        private static Map<RegistryKey,OptionKey> options() {
102            Map<RegistryKey,OptionKey> map =
103                new HashMap<RegistryKey,OptionKey>();
104            map.put(new RegistryKey(StandardSocketOptions.PREFIX_SO_BROADCAST,
105                Net.UNSPEC), new OptionKey(SOL_SOCKET, SO_BROADCAST));
106            map.put(new RegistryKey(StandardSocketOptions.PREFIX_SO_KEEPALIVE,
107                Net.UNSPEC), new OptionKey(SOL_SOCKET, SO_KEEPALIVE));
108            map.put(new RegistryKey(StandardSocketOptions.PREFIX_SO_LINGER,
109                Net.UNSPEC), new OptionKey(SOL_SOCKET, SO_LINGER));
110            map.put(new RegistryKey(StandardSocketOptions.PREFIX_SO_SNDBUF,
111                Net.UNSPEC), new OptionKey(SOL_SOCKET, SO_SNDBUF));
112            map.put(new RegistryKey(StandardSocketOptions.PREFIX_SO_RCVBUF,
113                Net.UNSPEC), new OptionKey(SOL_SOCKET, SO_RCVBUF));
114            map.put(new RegistryKey(StandardSocketOptions.PREFIX_SO_REUSEADDR,
115                Net.UNSPEC), new OptionKey(SOL_SOCKET, SO_REUSEADDR));
116            map.put(new RegistryKey(StandardSocketOptions.PREFIX_SO_REUSEPORT,
117                Net.UNSPEC), new OptionKey(SOL_SOCKET, SO_REUSEPORT));
118            // IPPROTO_TCP is 6
119            map.put(new RegistryKey(StandardSocketOptions.PREFIX_TCP_NODELAY,
120                Net.UNSPEC), new OptionKey(6, TCP_NODELAY));
121
122            // IPPROTO_IP is 0
123            map.put(new RegistryKey(StandardSocketOptions.PREFIX_IP_TOS,
124                StandardProtocolFamily.INET), new OptionKey(0, IP_TOS));
125            map.put(new RegistryKey(StandardSocketOptions.PREFIX_IP_MULTICAST_IF,
126                StandardProtocolFamily.INET), new OptionKey(0, IP_MULTICAST_IF));
127            map.put(new RegistryKey(StandardSocketOptions.PREFIX_IP_MULTICAST_TTL,
128                StandardProtocolFamily.INET), new OptionKey(0, IP_MULTICAST_TTL));
129            map.put(new RegistryKey(StandardSocketOptions.PREFIX_IP_MULTICAST_LOOP,
130                StandardProtocolFamily.INET), new OptionKey(0, IP_MULTICAST_LOOP));
131
132#ifdef AF_INET6
133            // IPPROTO_IPV6 is 41
134            map.put(new RegistryKey(StandardSocketOptions.PREFIX_IP_TOS,
135                StandardProtocolFamily.INET6), new OptionKey(41, IPV6_TCLASS));
136            map.put(new RegistryKey(StandardSocketOptions.PREFIX_IP_MULTICAST_IF,
137                StandardProtocolFamily.INET6), new OptionKey(41, IPV6_MULTICAST_IF));
138            map.put(new RegistryKey(StandardSocketOptions.PREFIX_IP_MULTICAST_TTL,
139                StandardProtocolFamily.INET6), new OptionKey(41, IPV6_MULTICAST_HOPS));
140            map.put(new RegistryKey(StandardSocketOptions.PREFIX_IP_MULTICAST_LOOP,
141                StandardProtocolFamily.INET6), new OptionKey(41, IPV6_MULTICAST_LOOP));
142#endif
143
144            map.put(new RegistryKey(ExtendedSocketOption.PREFIX_SO_OOBINLINE,
145                Net.UNSPEC), new OptionKey(SOL_SOCKET, SO_OOBINLINE));
146            return map;
147        }
148    }
149
150    public static OptionKey findOption(SocketOption<?> name, ProtocolFamily family) {
151        RegistryKey key = new RegistryKey(name, family);
152        return LazyInitialization.options.get(key);
153    }
154}
155