210 lines
5.7 KiB
Java
210 lines
5.7 KiB
Java
/*
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* Copyright 2015 Christian Basler
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package ch.dissem.bitmessage.entity.valueobject;
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import ch.dissem.bitmessage.entity.Streamable;
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import ch.dissem.bitmessage.utils.Encode;
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import ch.dissem.bitmessage.utils.UnixTime;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.net.InetAddress;
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import java.net.UnknownHostException;
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import java.util.Arrays;
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/**
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* A node's address. It's written in IPv6 format.
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*/
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public class NetworkAddress implements Streamable {
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private long time;
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/**
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* Stream number for this node
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*/
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private long stream;
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/**
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* same service(s) listed in version
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*/
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private long services;
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/**
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* IPv6 address. IPv4 addresses are written into the message as a 16 byte IPv4-mapped IPv6 address
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* (12 bytes 00 00 00 00 00 00 00 00 00 00 FF FF, followed by the 4 bytes of the IPv4 address).
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*/
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private byte[] ipv6;
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private int port;
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private NetworkAddress(Builder builder) {
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time = builder.time;
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stream = builder.stream;
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services = builder.services;
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ipv6 = builder.ipv6;
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port = builder.port;
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}
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public byte[] getIPv6() {
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return ipv6;
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}
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public int getPort() {
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return port;
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}
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public long getServices() {
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return services;
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}
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public long getStream() {
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return stream;
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}
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public long getTime() {
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return time;
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}
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public void setTime(long time) {
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this.time = time;
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}
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public InetAddress toInetAddress() {
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try {
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return InetAddress.getByAddress(ipv6);
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} catch (UnknownHostException e) {
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throw new RuntimeException(e);
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}
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) return true;
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if (o == null || getClass() != o.getClass()) return false;
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NetworkAddress that = (NetworkAddress) o;
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return port == that.port && Arrays.equals(ipv6, that.ipv6);
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}
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@Override
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public int hashCode() {
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int result = ipv6 != null ? Arrays.hashCode(ipv6) : 0;
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result = 31 * result + port;
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return result;
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}
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@Override
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public String toString() {
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return "[" + toInetAddress() + "]:" + port;
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}
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@Override
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public void write(OutputStream stream) throws IOException {
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write(stream, false);
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}
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public void write(OutputStream stream, boolean light) throws IOException {
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if (!light) {
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Encode.int64(time, stream);
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Encode.int32(this.stream, stream);
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}
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Encode.int64(services, stream);
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stream.write(ipv6);
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Encode.int16(port, stream);
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}
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public static final class Builder {
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private long time;
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private long stream;
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private long services = 1;
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private byte[] ipv6;
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private int port;
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public Builder() {
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}
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public Builder time(final long time) {
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this.time = time;
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return this;
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}
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public Builder stream(final long stream) {
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this.stream = stream;
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return this;
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}
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public Builder services(final long services) {
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this.services = services;
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return this;
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}
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public Builder ip(InetAddress inetAddress) {
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byte[] addr = inetAddress.getAddress();
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if (addr.length == 16) {
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this.ipv6 = addr;
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} else if (addr.length == 4) {
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this.ipv6 = new byte[16];
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this.ipv6[10] = (byte) 0xff;
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this.ipv6[11] = (byte) 0xff;
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System.arraycopy(addr, 0, this.ipv6, 12, 4);
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} else {
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throw new IllegalArgumentException("Weird address " + inetAddress);
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}
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return this;
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}
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public Builder ipv6(byte[] ipv6) {
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this.ipv6 = ipv6;
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return this;
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}
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public Builder ipv6(int p00, int p01, int p02, int p03,
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int p04, int p05, int p06, int p07,
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int p08, int p09, int p10, int p11,
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int p12, int p13, int p14, int p15) {
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this.ipv6 = new byte[]{
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(byte) p00, (byte) p01, (byte) p02, (byte) p03,
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(byte) p04, (byte) p05, (byte) p06, (byte) p07,
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(byte) p08, (byte) p09, (byte) p10, (byte) p11,
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(byte) p12, (byte) p13, (byte) p14, (byte) p15
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};
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return this;
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}
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public Builder ipv4(int p00, int p01, int p02, int p03) {
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this.ipv6 = new byte[]{
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(byte) 0, (byte) 0, (byte) 0x00, (byte) 0x00,
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(byte) 0, (byte) 0, (byte) 0x00, (byte) 0x00,
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(byte) 0, (byte) 0, (byte) 0xff, (byte) 0xff,
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(byte) p00, (byte) p01, (byte) p02, (byte) p03
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};
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return this;
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}
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public Builder port(final int port) {
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this.port = port;
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return this;
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}
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public NetworkAddress build() {
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if (time == 0) {
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time = UnixTime.now();
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}
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return new NetworkAddress(this);
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}
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}
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}
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