298 lines
11 KiB
Java
298 lines
11 KiB
Java
package net.ME1312.SubServers.Client.Bukkit.Network;
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import net.ME1312.SubServers.Client.Bukkit.Library.Exception.IllegalPacketException;
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import net.ME1312.SubServers.Client.Bukkit.Library.Util;
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import net.ME1312.SubServers.Client.Bukkit.Library.Version.Version;
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import net.ME1312.SubServers.Client.Bukkit.Network.Packet.*;
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import net.ME1312.SubServers.Client.Bukkit.SubPlugin;
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import org.bukkit.Bukkit;
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import org.json.JSONException;
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import org.json.JSONObject;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.PrintWriter;
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import java.lang.reflect.InvocationTargetException;
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import java.net.InetAddress;
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import java.net.Socket;
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import java.net.SocketException;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.LinkedList;
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import java.util.List;
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/**
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* SubData Direct Client Class
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*/
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public final class SubDataClient {
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private static HashMap<Class<? extends PacketOut>, String> pOut = new HashMap<Class<? extends PacketOut>, String>();
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private static HashMap<String, List<PacketIn>> pIn = new HashMap<String, List<PacketIn>>();
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private static boolean defaults = false;
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private PrintWriter writer;
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private Socket socket;
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private String name;
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private SubPlugin plugin;
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private LinkedList<PacketOut> queue;
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/**
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* SubServers Client Instance
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*
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* @param plugin SubPlugin
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* @param address Address
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* @param port Port
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* @throws IOException
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*/
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public SubDataClient(SubPlugin plugin, String name, InetAddress address, int port) throws IOException {
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if (Util.isNull(plugin, name, address, port)) throw new NullPointerException();
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socket = new Socket(address, port);
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this.plugin = plugin;
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this.name = name;
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this.writer = new PrintWriter(socket.getOutputStream(), true);
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this.queue = new LinkedList<PacketOut>();
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if (!defaults) loadDefaults();
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loop();
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Bukkit.getScheduler().runTaskLater(plugin, () -> sendPacket(new PacketAuthorization(plugin)), 10);
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}
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private void loadDefaults() {
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defaults = true;
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registerPacket(new PacketAuthorization(plugin), "Authorization");
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registerPacket(new PacketCommandServer(), "SubCommandServer");
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registerPacket(new PacketCreateServer(), "SubCreateServer");
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registerPacket(new PacketDownloadHostInfo(), "SubDownloadHostInfo");
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registerPacket(new PacketDownloadLang(plugin), "SubDownloadLang");
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registerPacket(new PacketDownloadPlayerList(), "SubDownloadPlayerList");
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registerPacket(new PacketDownloadServerInfo(), "SubDownloadServerInfo");
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registerPacket(new PacketDownloadServerList(), "SubDownloadServerList");
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registerPacket(new PacketInRunEvent(), "SubRunEvent");
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registerPacket(new PacketInReset(), "SubReset");
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registerPacket(new PacketLinkServer(plugin), "SubLinkServer");
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registerPacket(new PacketStartServer(), "SubStartServer");
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registerPacket(new PacketStopServer(), "SubStopServer");
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registerPacket(new PacketTeleportPlayer(), "SubTeleportPlayer");
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registerPacket(PacketAuthorization.class, "Authorization");
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registerPacket(PacketCommandServer.class, "SubCommandServer");
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registerPacket(PacketCreateServer.class, "SubCreateServer");
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registerPacket(PacketDownloadHostInfo.class, "SubDownloadHostInfo");
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registerPacket(PacketDownloadLang.class, "SubDownloadLang");
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registerPacket(PacketDownloadPlayerList.class, "SubDownloadPlayerList");
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registerPacket(PacketDownloadServerInfo.class, "SubDownloadServerInfo");
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registerPacket(PacketDownloadServerList.class, "SubDownloadServerList");
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registerPacket(PacketLinkServer.class, "SubLinkServer");
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registerPacket(PacketStartServer.class, "SubStartServer");
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registerPacket(PacketStopServer.class, "SubStopServer");
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registerPacket(PacketTeleportPlayer.class, "SubTeleportPlayer");
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}
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private void loop() {
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Bukkit.getScheduler().runTaskAsynchronously(plugin, () -> {
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try {
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BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
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String input;
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while ((input = in.readLine()) != null) {
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try {
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JSONObject json = new JSONObject(input);
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for (PacketIn packet : decodePacket(json)) {
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try {
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Bukkit.getScheduler().runTask(plugin, () -> packet.execute((json.keySet().contains("c"))?json.getJSONObject("c"):null));
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} catch (Exception e) {
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new InvocationTargetException(e, "Exception while executing PacketIn").printStackTrace();
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}
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}
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} catch (IllegalPacketException e) {
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e.printStackTrace();
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} catch (JSONException e) {
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new IllegalPacketException("Unknown Packet Format: " + input).printStackTrace();
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}
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}
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try {
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destroy(true);
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} catch (IOException e1) {
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e1.printStackTrace();
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}
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} catch (Exception e) {
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if (!(e instanceof SocketException)) e.printStackTrace();
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try {
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destroy(true);
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} catch (IOException e1) {
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e1.printStackTrace();
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}
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}
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});
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}
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/**
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* Gets the Assigned Server Name
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*
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* @return Server Name
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*/
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public String getName() {
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return name;
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}
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/**
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* Gets the Server Socket
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*
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* @return Server Socket
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*/
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public Socket getClient() {
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return socket;
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}
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/**
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* Register PacketIn to the Network
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*
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* @param packet PacketIn to register
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* @param handle Handle to Bind
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*/
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public static void registerPacket(PacketIn packet, String handle) {
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if (Util.isNull(packet, handle)) throw new NullPointerException();
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List<PacketIn> list = (pIn.keySet().contains(handle))?pIn.get(handle):new ArrayList<PacketIn>();
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if (!list.contains(packet)) list.add(packet);
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pIn.put(handle, list);
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}
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/**
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* Unregister PacketIn from the Network
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*
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* @param packet PacketIn to unregister
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*/
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public static void unregisterPacket(PacketIn packet) {
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if (Util.isNull(packet)) throw new NullPointerException();
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for (String handle : pIn.keySet()) if (pIn.get(handle).contains(packet)) pIn.get(handle).remove(packet);
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}
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/**
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* Register PacketOut to the Network
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*
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* @param packet PacketOut to register
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* @param handle Handle to bind
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*/
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public static void registerPacket(Class<? extends PacketOut> packet, String handle) {
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if (Util.isNull(packet, handle)) throw new NullPointerException();
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pOut.put(packet, handle);
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}
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/**
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* Unregister PacketOut to the Network
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*
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* @param packet PacketOut to unregister
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*/
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public static void unregisterPacket(Class<? extends PacketOut> packet) {
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if (Util.isNull(packet)) throw new NullPointerException();
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pOut.remove(packet);
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}
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/**
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* Grab PacketIn Instances via handle
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*
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* @param handle Handle
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* @return PacketIn
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*/
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public static List<? extends PacketIn> getPacket(String handle) {
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if (Util.isNull(handle)) throw new NullPointerException();
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return new ArrayList<PacketIn>(pIn.get(handle));
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}
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/**
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* Send Packet to Client
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*
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* @param packet Packet to send
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*/
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public void sendPacket(PacketOut packet) {
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if (Util.isNull(packet)) throw new NullPointerException();
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if (socket == null) {
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queue.add(packet);
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} else {
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try {
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writer.println(encodePacket(packet));
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} catch (IllegalPacketException e) {
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e.printStackTrace();
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}
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}
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}
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/**
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* JSON Encode PacketOut
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*
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* @param packet PacketOut
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* @return JSON Formatted Packet
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* @throws IllegalPacketException
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*/
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private static JSONObject encodePacket(PacketOut packet) throws IllegalPacketException {
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JSONObject json = new JSONObject();
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if (!pOut.keySet().contains(packet.getClass())) throw new IllegalPacketException("Unknown PacketOut Channel: " + packet.getClass().getCanonicalName());
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if (packet.getVersion().toString() == null) throw new NullPointerException("PacketOut Version cannot be null: " + packet.getClass().getCanonicalName());
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JSONObject contents = packet.generate();
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json.put("h", pOut.get(packet.getClass()));
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json.put("v", packet.getVersion().toString());
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if (contents != null) json.put("c", contents);
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return json;
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}
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/**
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* JSON Decode PacketIn
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*
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* @param json JSON to Decode
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* @return PacketIn
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* @throws IllegalPacketException
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* @throws InvocationTargetException
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*/
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private static List<PacketIn> decodePacket(JSONObject json) throws IllegalPacketException, InvocationTargetException {
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if (!json.keySet().contains("h") || !json.keySet().contains("v")) throw new IllegalPacketException("Unknown Packet Format: " + json.toString());
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if (!pIn.keySet().contains(json.getString("h"))) throw new IllegalPacketException("Unknown PacketIn Channel: " + json.getString("h"));
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List<PacketIn> list = new ArrayList<PacketIn>();
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for (PacketIn packet : pIn.get(json.getString("h"))) {
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if (new Version(json.getString("v")).equals(packet.getVersion())) {
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list.add(packet);
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} else {
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new IllegalPacketException("Packet Version Mismatch in " + json.getString("h") + ": " + json.getString("v") + " -> " + packet.getVersion().toString()).printStackTrace();
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}
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}
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return list;
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}
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/**
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* Drops All Connections and Stops the SubData Listener
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*
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* @throws IOException
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*/
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public void destroy(boolean reconnect) throws IOException {
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if (Util.isNull(reconnect)) throw new NullPointerException();
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if (socket != null) {
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final Socket socket = this.socket;
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this.socket = null;
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if (!socket.isClosed()) socket.close();
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Bukkit.getLogger().info("SubServers > The SubData Connection was closed");
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if (reconnect) {
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Bukkit.getLogger().info("SubServers > Attempting to reconnect in 10 seconds");
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Bukkit.getScheduler().runTaskLaterAsynchronously(plugin, new Runnable() {
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@Override
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public void run() {
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try {
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plugin.subdata = new SubDataClient(plugin, name, socket.getInetAddress(), socket.getPort());
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while (queue.size() != 0) {
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sendPacket(queue.get(0));
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queue.remove(0);
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}
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} catch (IOException e) {
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Bukkit.getLogger().info("SubServers > Connection was unsuccessful, retrying in 10 seconds");
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Bukkit.getScheduler().runTaskLater(plugin, this, 30 * 20);
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}
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}
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}, 30 * 20);
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}
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plugin.subdata = null;
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}
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}
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}
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