Paper/src/main/java/net/minecraft/server/MinecraftServer.java

package net.minecraft.server;

import java.awt.GraphicsEnvironment;
import java.io.File;
import java.io.IOException;
import java.net.InetAddress;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;

// CraftBukkit start
import java.net.UnknownHostException;
import joptsimple.OptionSet;
import org.bukkit.command.ConsoleCommandSender;
import org.bukkit.craftbukkit.CraftServer;
import org.bukkit.craftbukkit.scheduler.CraftScheduler;
import org.bukkit.event.Event;
import org.bukkit.event.world.WorldEvent;
//CraftBukkit end

public class MinecraftServer implements ICommandListener, Runnable {

    public static Logger a = Logger.getLogger("Minecraft");
    public static HashMap b = new HashMap();
    public NetworkListenThread c;
    public PropertyManager d;
    //public WorldServer e;
    public ServerConfigurationManager f;
    private boolean o = true;
    public boolean g = false;
    int h = 0;
    public String i;
    public int j;
    private List p = new ArrayList();
    private List q = Collections.synchronizedList(new ArrayList());
    public EntityTracker k;
    public boolean l;
    public boolean m;
    public boolean n;
    public List<WorldServer> worlds = new ArrayList<WorldServer>();

    // Craftbukkit start - adds argument OptionSet
    public MinecraftServer(OptionSet options) {
        new ThreadSleepForever(this);
        // CraftBukkit start
        this.options = options;
    }
    public CraftServer server;
    public OptionSet options;
    public ConsoleCommandSender console = new ConsoleCommandSender();

    private boolean d() throws UnknownHostException {
        // CraftBukkit end -- added throws UnknownHostException
        ThreadCommandReader threadcommandreader = new ThreadCommandReader(this);

        threadcommandreader.setDaemon(true);
        threadcommandreader.start();
        ConsoleLogManager.a();
        a.info("Starting minecraft server version Beta 1.2_01");
        if (Runtime.getRuntime().maxMemory() / 1024L / 1024L < 512L) {
            a.warning("**** NOT ENOUGH RAM!");
            a.warning("To start the server with more ram, launch it as \"java -Xmx1024M -Xms1024M -jar minecraft_server.jar\"");
        }

        a.info("Loading properties");
        this.d = new PropertyManager(new File("server.properties"));
        String s = this.d.a("server-ip", "");

        this.l = this.d.a("online-mode", true);
        this.m = this.d.a("spawn-animals", true);
        this.n = this.d.a("pvp", true);
        InetAddress inetaddress = null;

        if (s.length() > 0) {
            inetaddress = InetAddress.getByName(s);
        }

        int i = this.d.a("server-port", 25565);

        a.info("Starting Minecraft server on " + (s.length() == 0 ? "*" : s) + ":" + i);

        try {
            this.c = new NetworkListenThread(this, inetaddress, i);
            // CraftBukkit: Be more generic; IOException -> Throwable
        } catch (Throwable ioexception) {
            a.warning("**** FAILED TO BIND TO PORT!");
            a.log(Level.WARNING, "The exception was: " + ioexception.toString());
            a.warning("Perhaps a server is already running on that port?");
            return false;
        }

        if (!this.l) {
            a.warning("**** SERVER IS RUNNING IN OFFLINE/INSECURE MODE!");
            a.warning("The server will make no attempt to authenticate usernames. Beware.");
            a.warning("While this makes the game possible to play without internet access, it also opens up the ability for hackers to connect with any username they choose.");
            a.warning("To change this, set \"online-mode\" to \"true\" in the server.settings file.");
        }

        this.f = new ServerConfigurationManager(this);
        this.k = new EntityTracker(this);
        String s1 = this.d.a("level-name", "world");

        a.info("Preparing level \"" + s1 + "\"");
        this.c(s1);
        a.info("Done! For help, type \"help\" or \"?\"");
        return true;
    }

    private void c(String s) {
        a.info("Preparing start region");

        // Craftbukkit start
        WorldServer world = new WorldServer(this, new File("."), s, this.d.a("hellworld", false) ? -1 : 0);
        world.a(new WorldManager(this, world));
        world.k = this.d.a("spawn-monsters", true) ? 1 : 0;
        world.a(this.d.a("spawn-monsters", true), this.m);
        this.f.a(world);
        worlds.add(world);
        // Craftbukkit end

        short short1 = 196;
        long i = System.currentTimeMillis();

        for (int j = -short1; j <= short1 && this.o; j += 16) {
            for (int k = -short1; k <= short1 && this.o; k += 16) {
                long l = System.currentTimeMillis();

                if (l < i) {
                    i = l;
                }

                if (l > i + 1000L) {
                    int i1 = (short1 * 2 + 1) * (short1 * 2 + 1);
                    int j1 = (j + short1) * (short1 * 2 + 1) + k + 1;

                    this.a("Preparing spawn area", j1 * 100 / i1);
                    i = l;
                }

                // Craftbukkit start
                for (WorldServer worldserver : worlds) {
                    world.A.d(world.spawnX + j >> 4, world.spawnZ + k >> 4);

                    while (world.d() && this.o) {
                        ;
                    }
                }
                // Craftbukkit end
            }
        }

        this.e();
    }

    private void a(String s, int i) {
        this.i = s;
        this.j = i;
        a.info(s + ": " + i + "%");
    }

    private void e() {
        this.i = null;
        this.j = 0;

        server.loadPlugins(); // CraftBukkit
    }

    private void f() {
        a.info("Saving chunks");

        // Craftbukkit start
        for (WorldServer world : worlds) {
            world.a(true, (IProgressUpdate) null);
            
            Event worldSaved = new WorldEvent( Event.Type.WORLD_SAVED, world.getWorld() );
            server.getPluginManager().callEvent( worldSaved );
        }
        // Craftbukkit end
    }

    private void g() {
        a.info("Stopping server");
        // CraftBukkit
        if(server != null) {
            server.disablePlugins();
        }

        if (this.f != null) {
            this.f.d();
        }

        if (this.worlds.size() > 0) { // Craftbukkit
            this.f();
        }
    }

    public void a() {
        this.o = false;
    }

    public void run() {
        try {
            if (this.d()) {
                long i = System.currentTimeMillis();
                long j = 0L;

                while (this.o) {
                    long k = System.currentTimeMillis();
                    long l = k - i;

                    if (l > 2000L) {
                        a.warning("Can\'t keep up! Did the system time change, or is the server overloaded?");
                        l = 2000L;
                    }

                    if (l < 0L) {
                        a.warning("Time ran backwards! Did the system time change?");
                        l = 0L;
                    }

                    j += l;
                    i = k;

                    while (j > 50L) {
                        j -= 50L;
                        this.h();
                    }

                    Thread.sleep(1L);
                }
            } else {
                while (this.o) {
                    this.b();

                    try {
                        Thread.sleep(10L);
                    } catch (InterruptedException interruptedexception) {
                        interruptedexception.printStackTrace();
                    }
                }
            }
        } catch (Exception exception) {
            exception.printStackTrace();
            a.log(Level.SEVERE, "Unexpected exception", exception);

            while (this.o) {
                this.b();

                try {
                    Thread.sleep(10L);
                } catch (InterruptedException interruptedexception1) {
                    interruptedexception1.printStackTrace();
                }
            }
        } finally {
            try {
                this.g();
                this.g = true;
            } finally {
                System.exit(0);
            }
        }
    }

    private void h() {
        ArrayList arraylist = new ArrayList();
        Iterator iterator = b.keySet().iterator();

        while (iterator.hasNext()) {
            String s = (String) iterator.next();
            int i = ((Integer) b.get(s)).intValue();

            if (i > 0) {
                b.put(s, Integer.valueOf(i - 1));
            } else {
                arraylist.add(s);
            }
        }

        int j;

        for (j = 0; j < arraylist.size(); ++j) {
            b.remove(arraylist.get(j));
        }

        AxisAlignedBB.a();
        Vec3D.a();
        ++this.h;

        // Craftbukkit start
        if (this.h % 20 == 0) {
            for (int i = 0; i < this.f.b.size(); ++i) {
                EntityPlayer entityplayer = (EntityPlayer) this.f.b.get(i);
                entityplayer.a.b((Packet) (new Packet4UpdateTime(entityplayer.world.e)));
            }
        }

        ((CraftScheduler) server.getScheduler()).mainThreadHeartbeat(this.h);
        
        for (WorldServer world : worlds) {
            world.f();

            while (world.d()) {
                ;
            }
            
            world.c();
        }
        // Craftbukkit end

        this.c.a();
        this.f.b();
        this.k.a();

        for (j = 0; j < this.p.size(); ++j) {
            ((IUpdatePlayerListBox) this.p.get(j)).a();
        }

        try {
            this.b();
        } catch (Exception exception) {
            a.log(Level.WARNING, "Unexpected exception while parsing console command", exception);
        }
    }

    public void a(String s, ICommandListener icommandlistener) {
        this.q.add(new ServerCommand(s, icommandlistener));
    }

    public void b() {
        while (this.q.size() > 0) {
            ServerCommand servercommand = (ServerCommand) this.q.remove(0);
            String s = servercommand.a;
            ICommandListener icommandlistener = servercommand.b;
            String s1 = icommandlistener.c();

            // Craftbukkit start
            if (server.dispatchCommand(console, s)) {
                continue;
            }
            // Craftbukkit end

            if (!s.toLowerCase().startsWith("help") && !s.toLowerCase().startsWith("?")) {
                if (s.toLowerCase().startsWith("list")) {
                    icommandlistener.b("Connected players: " + this.f.c());
                } else if (s.toLowerCase().startsWith("stop")) {
                    this.a(s1, "Stopping the server..");
                    this.o = false;
                } else if (s.toLowerCase().startsWith("save-all")) {
                    this.a(s1, "Forcing save..");

                    // Craftbukkit start
                    for (WorldServer world : worlds) {
                        world.a(true, (IProgressUpdate) null);
                        
                        Event worldSaved = new WorldEvent( Event.Type.WORLD_SAVED, world.getWorld() );
                        server.getPluginManager().callEvent( worldSaved );
                    }
                    
                    this.f.d();
                    // Craftbukkit end

                    this.a(s1, "Save complete.");
                } else if (s.toLowerCase().startsWith("save-off")) {
                    this.a(s1, "Disabling level saving..");

                    // Craftbukkit start
                    for (WorldServer world : worlds) {
                        world.C = true;
                    }
                    // Craftbukkit end
                } else if (s.toLowerCase().startsWith("save-on")) {
                    this.a(s1, "Enabling level saving..");

                    // Craftbukkit start
                    for (WorldServer world : worlds) {
                        world.C = false;
                    }
                    // Craftbukkit end
                } else {
                    String s2;

                    if (s.toLowerCase().startsWith("op ")) {
                        s2 = s.substring(s.indexOf(" ")).trim();
                        this.f.e(s2);
                        this.a(s1, "Opping " + s2);
                        this.f.a(s2, "§eYou are now op!");
                    } else if (s.toLowerCase().startsWith("deop ")) {
                        s2 = s.substring(s.indexOf(" ")).trim();
                        this.f.f(s2);
                        this.f.a(s2, "§eYou are no longer op!");
                        this.a(s1, "De-opping " + s2);
                    } else if (s.toLowerCase().startsWith("ban-ip ")) {
                        s2 = s.substring(s.indexOf(" ")).trim();
                        this.f.c(s2);
                        this.a(s1, "Banning ip " + s2);
                    } else if (s.toLowerCase().startsWith("pardon-ip ")) {
                        s2 = s.substring(s.indexOf(" ")).trim();
                        this.f.d(s2);
                        this.a(s1, "Pardoning ip " + s2);
                    } else {
                        EntityPlayer entityplayer;

                        if (s.toLowerCase().startsWith("ban ")) {
                            s2 = s.substring(s.indexOf(" ")).trim();
                            this.f.a(s2);
                            this.a(s1, "Banning " + s2);
                            entityplayer = this.f.h(s2);
                            if (entityplayer != null) {
                                entityplayer.a.a("Banned by admin");
                            }
                        } else if (s.toLowerCase().startsWith("pardon ")) {
                            s2 = s.substring(s.indexOf(" ")).trim();
                            this.f.b(s2);
                            this.a(s1, "Pardoning " + s2);
                        } else if (s.toLowerCase().startsWith("kick ")) {
                            s2 = s.substring(s.indexOf(" ")).trim();
                            entityplayer = null;

                            for (int i = 0; i < this.f.b.size(); ++i) {
                                EntityPlayer entityplayer1 = (EntityPlayer) this.f.b.get(i);

                                if (entityplayer1.name.equalsIgnoreCase(s2)) {
                                    entityplayer = entityplayer1;
                                }
                            }

                            if (entityplayer != null) {
                                entityplayer.a.a("Kicked by admin");
                                this.a(s1, "Kicking " + entityplayer.name);
                            } else {
                                icommandlistener.b("Can\'t find user " + s2 + ". No kick.");
                            }
                        } else {
                            String[] astring;
                            EntityPlayer entityplayer2;

                            if (s.toLowerCase().startsWith("tp ")) {
                                astring = s.split(" ");
                                if (astring.length == 3) {
                                    entityplayer = this.f.h(astring[1]);
                                    entityplayer2 = this.f.h(astring[2]);
                                    if (entityplayer == null) {
                                        icommandlistener.b("Can\'t find user " + astring[1] + ". No tp.");
                                    } else if (entityplayer2 == null) {
                                        icommandlistener.b("Can\'t find user " + astring[2] + ". No tp.");
                                    } else {
                                        entityplayer.a.a(entityplayer2.locX, entityplayer2.locY, entityplayer2.locZ, entityplayer2.yaw, entityplayer2.pitch);
                                        this.a(s1, "Teleporting " + astring[1] + " to " + astring[2] + ".");
                                    }
                                } else {
                                    icommandlistener.b("Syntax error, please provice a source and a target.");
                                }
                            } else if (s.toLowerCase().startsWith("give ")) {
                                astring = s.split(" ");
                                if (astring.length != 3 && astring.length != 4) {
                                    return;
                                }

                                String s3 = astring[1];

                                entityplayer2 = this.f.h(s3);
                                if (entityplayer2 != null) {
                                    try {
                                        int j = Integer.parseInt(astring[2]);

                                        if (Item.byId[j] != null) {
                                            this.a(s1, "Giving " + entityplayer2.name + " some " + j);
                                            int k = 1;

                                            if (astring.length > 3) {
                                                k = this.b(astring[3], 1);
                                            }

                                            if (k < 1) {
                                                k = 1;
                                            }

                                            if (k > 64) {
                                                k = 64;
                                            }

                                            entityplayer2.b(new ItemStack(j, k, 0));
                                        } else {
                                            icommandlistener.b("There\'s no item with id " + j);
                                        }
                                    } catch (NumberFormatException numberformatexception) {
                                        icommandlistener.b("There\'s no item with id " + astring[2]);
                                    }
                                } else {
                                    icommandlistener.b("Can\'t find user " + s3);
                                }
                            } else if (s.toLowerCase().startsWith("say ")) {
                                s = s.substring(s.indexOf(" ")).trim();
                                a.info("[" + s1 + "] " + s);
                                this.f.a((Packet) (new Packet3Chat("§d[Server] " + s)));
                            } else if (s.toLowerCase().startsWith("tell ")) {
                                astring = s.split(" ");
                                if (astring.length >= 3) {
                                    s = s.substring(s.indexOf(" ")).trim();
                                    s = s.substring(s.indexOf(" ")).trim();
                                    a.info("[" + s1 + "->" + astring[1] + "] " + s);
                                    s = "§7" + s1 + " whispers " + s;
                                    a.info(s);
                                    if (!this.f.a(astring[1], (Packet) (new Packet3Chat(s)))) {
                                        icommandlistener.b("There\'s no player by that name online.");
                                    }
                                }
                            } else {
                                a.info("Unknown console command. Type \"help\" for help.");
                            }
                        }
                    }
                }
            } else {
                icommandlistener.b("To run the server without a gui, start it like this:");
                icommandlistener.b("   java -Xmx1024M -Xms1024M -jar minecraft_server.jar nogui");
                icommandlistener.b("Console commands:");
                icommandlistener.b("   help  or  ?               shows this message");
                icommandlistener.b("   kick <player>             removes a player from the server");
                icommandlistener.b("   ban <player>              bans a player from the server");
                icommandlistener.b("   pardon <player>           pardons a banned player so that they can connect again");
                icommandlistener.b("   ban-ip <ip>               bans an IP address from the server");
                icommandlistener.b("   pardon-ip <ip>            pardons a banned IP address so that they can connect again");
                icommandlistener.b("   op <player>               turns a player into an op");
                icommandlistener.b("   deop <player>             removes op status from a player");
                icommandlistener.b("   tp <player1> <player2>    moves one player to the same location as another player");
                icommandlistener.b("   give <player> <id> [num]  gives a player a resource");
                icommandlistener.b("   tell <player> <message>   sends a private message to a player");
                icommandlistener.b("   stop                      gracefully stops the server");
                icommandlistener.b("   save-all                  forces a server-wide level save");
                icommandlistener.b("   save-off                  disables terrain saving (useful for backup scripts)");
                icommandlistener.b("   save-on                   re-enables terrain saving");
                icommandlistener.b("   list                      lists all currently connected players");
                icommandlistener.b("   say <message>             broadcasts a message to all players");
            }
        }
    }

    private void a(String s, String s1) {
        String s2 = s + ": " + s1;

        this.f.i("§7(" + s2 + ")");
        a.info(s2);
    }

    private int b(String s, int i) {
        try {
            return Integer.parseInt(s);
        } catch (NumberFormatException numberformatexception) {
            return i;
        }
    }

    public void a(IUpdatePlayerListBox iupdateplayerlistbox) {
        this.p.add(iupdateplayerlistbox);
    }

    // Craftbukkit start - replaces main(String args[])
    public static void main(final OptionSet options) {
        try {
            MinecraftServer minecraftserver = new MinecraftServer(options);

            // CraftBukkit - remove gui

            (new ThreadServerApplication("Server thread", minecraftserver)).start();
        } catch (Exception exception) {
            a.log(Level.SEVERE, "Failed to start the minecraft server", exception);
        }
    }

    public File a(String s) {
        return new File(s);
    }

    public void b(String s) {
        a.info(s);
    }

    public String c() {
        return "CONSOLE";
    }

    public static boolean a(MinecraftServer minecraftserver) {
        return minecraftserver.o;
    }
}