/*

 * Copyright (c) 2008, 2016, Oracle and/or its affiliates. All rights reserved.

 *

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

@@END_COPYRIGHT@@

#include <stdio.h>

#ifdef _WIN32

#include <winsock2.h>

#include <ws2tcpip.h>

#else

#include <sys/types.h>

#include <sys/socket.h>

#include <netinet/in.h>

#include <netinet/tcp.h>

#endif

/* Defines SO_REUSEPORT */

#if !defined(SO_REUSEPORT)

#ifdef _WIN32

#define SO_REUSEPORT 0

#elif __linux__

#define SO_REUSEPORT 15

#elif __solaris__

#define SO_REUSEPORT 0x100e

#elif defined(AIX) || defined(MACOSX)

#define SO_REUSEPORT 0x0200

#else

#define SO_REUSEPORT 0

#endif

#endif

/* On Solaris, "sun" is defined as a macro. Undefine to make package

   declaration valid */

#undef sun

/* To be able to name the Java constants the same as the C constants without

   having the preprocessor rewrite those identifiers, add PREFIX_ to all

   identifiers matching a C constant. The PREFIX_ is filtered out in the

   makefile. */

@@START_HERE@@

package sun.nio.ch;

import java.net.SocketOption;

import java.net.StandardSocketOptions;

import java.net.ProtocolFamily;

import java.net.StandardProtocolFamily;

import java.util.Map;

import java.util.HashMap;

class SocketOptionRegistry {

    private SocketOptionRegistry() { }

    private static class RegistryKey {

        private final SocketOption<?> name;

        private final ProtocolFamily family;

        RegistryKey(SocketOption<?> name, ProtocolFamily family) {

            this.name = name;

            this.family = family;

        }

        public int hashCode() {

            return name.hashCode() + family.hashCode();

        }

        public boolean equals(Object ob) {

            if (ob == null) return false;

            if (!(ob instanceof RegistryKey)) return false;

            RegistryKey other = (RegistryKey)ob;

            if (this.name != other.name) return false;

            if (this.family != other.family) return false;

            return true;

        }

    }

    private static class LazyInitialization {

        static final Map<RegistryKey,OptionKey> options = options();

        private static Map<RegistryKey,OptionKey> options() {

            Map<RegistryKey,OptionKey> map =

                new HashMap<RegistryKey,OptionKey>();

            map.put(new RegistryKey(StandardSocketOptions.PREFIX_SO_BROADCAST,

                Net.UNSPEC), new OptionKey(SOL_SOCKET, SO_BROADCAST));

            map.put(new RegistryKey(StandardSocketOptions.PREFIX_SO_KEEPALIVE,

                Net.UNSPEC), new OptionKey(SOL_SOCKET, SO_KEEPALIVE));

            map.put(new RegistryKey(StandardSocketOptions.PREFIX_SO_LINGER,

                Net.UNSPEC), new OptionKey(SOL_SOCKET, SO_LINGER));

            map.put(new RegistryKey(StandardSocketOptions.PREFIX_SO_SNDBUF,

                Net.UNSPEC), new OptionKey(SOL_SOCKET, SO_SNDBUF));

            map.put(new RegistryKey(StandardSocketOptions.PREFIX_SO_RCVBUF,

                Net.UNSPEC), new OptionKey(SOL_SOCKET, SO_RCVBUF));

            map.put(new RegistryKey(StandardSocketOptions.PREFIX_SO_REUSEADDR,

                Net.UNSPEC), new OptionKey(SOL_SOCKET, SO_REUSEADDR));

            map.put(new RegistryKey(StandardSocketOptions.PREFIX_SO_REUSEPORT,

                Net.UNSPEC), new OptionKey(SOL_SOCKET, SO_REUSEPORT));

            // IPPROTO_TCP is 6

            map.put(new RegistryKey(StandardSocketOptions.PREFIX_TCP_NODELAY,

                Net.UNSPEC), new OptionKey(6, TCP_NODELAY));

            // IPPROTO_IP is 0

            map.put(new RegistryKey(StandardSocketOptions.PREFIX_IP_TOS,

                StandardProtocolFamily.INET), new OptionKey(0, IP_TOS));

            map.put(new RegistryKey(StandardSocketOptions.PREFIX_IP_MULTICAST_IF,

                StandardProtocolFamily.INET), new OptionKey(0, IP_MULTICAST_IF));

            map.put(new RegistryKey(StandardSocketOptions.PREFIX_IP_MULTICAST_TTL,

                StandardProtocolFamily.INET), new OptionKey(0, IP_MULTICAST_TTL));

            map.put(new RegistryKey(StandardSocketOptions.PREFIX_IP_MULTICAST_LOOP,

                StandardProtocolFamily.INET), new OptionKey(0, IP_MULTICAST_LOOP));

#ifdef AF_INET6

            // IPPROTO_IPV6 is 41

            map.put(new RegistryKey(StandardSocketOptions.PREFIX_IP_TOS,

                StandardProtocolFamily.INET6), new OptionKey(41, IPV6_TCLASS));

            map.put(new RegistryKey(StandardSocketOptions.PREFIX_IP_MULTICAST_IF,

                StandardProtocolFamily.INET6), new OptionKey(41, IPV6_MULTICAST_IF));

            map.put(new RegistryKey(StandardSocketOptions.PREFIX_IP_MULTICAST_TTL,

                StandardProtocolFamily.INET6), new OptionKey(41, IPV6_MULTICAST_HOPS));

            map.put(new RegistryKey(StandardSocketOptions.PREFIX_IP_MULTICAST_LOOP,

                StandardProtocolFamily.INET6), new OptionKey(41, IPV6_MULTICAST_LOOP));

#endif

            map.put(new RegistryKey(ExtendedSocketOption.PREFIX_SO_OOBINLINE,

                Net.UNSPEC), new OptionKey(SOL_SOCKET, SO_OOBINLINE));

            return map;

        }

    }

    public static OptionKey findOption(SocketOption<?> name, ProtocolFamily family) {

        RegistryKey key = new RegistryKey(name, family);

        return LazyInitialization.options.get(key);

    }

}