Created basic ban functionality (IP bans not yet supported)

src/main/java/com/redstoner/bungeeBans/BanJoinListener.java

@@ -0,0 +1,57 @@
+package com.redstoner.bungeeBans;
+
+import com.mojang.api.profiles.Profile;
+import com.redstoner.bungeeBans.json.Ban;
+import net.md_5.bungee.api.ChatColor;
+import net.md_5.bungee.api.chat.ComponentBuilder;
+import net.md_5.bungee.api.connection.PendingConnection;
+import net.md_5.bungee.api.event.PreLoginEvent;
+import net.md_5.bungee.api.plugin.Listener;
+import net.md_5.bungee.event.EventHandler;
+import net.md_5.bungee.event.EventPriority;
+
+public class BanJoinListener<T extends Ban> implements Listener {
+	private BanManager<T> bm;
+
+	BanJoinListener(BanManager<T> bm) {
+		this.bm = bm;
+	}
+
+	@EventHandler (priority = EventPriority.HIGHEST)
+	public void onJoin(PreLoginEvent event) {
+		event.setCancelled(true);
+
+		PendingConnection conn = event.getConnection();
+		String            name = conn.getName();
+
+		Profile[] profiles = Util.findProfilesByNames(name);
+
+		if (profiles.length != 1) {
+			event.setCancelReason(
+					new ComponentBuilder(ChatColor.RED + "Server error occured while joining: ")
+							.append(ChatColor.AQUA + "The mojang API does not know your UUID!")
+							.create()
+			);
+
+			return;
+		}
+
+		T ban = bm.getBan(Util.dashUUID(profiles[0].getId()));
+
+		if (ban != null) {
+			event.setCancelReason(
+					new ComponentBuilder(ChatColor.RED + "You were banned by ")
+							.append(ChatColor.AQUA + ban.getSource())
+							.append(ChatColor.RED + " for ")
+							.append(ChatColor.AQUA + ban.getReason())
+							.append(ChatColor.RED + " on ")
+							.append(ChatColor.AQUA + ban.getCreated())
+							.append(ChatColor.RED + " until ")
+							.append(ChatColor.AQUA + ban.getExpires())
+							.create()
+			);
+		} else {
+			event.setCancelled(false);
+		}
+	}
+}

src/main/java/com/redstoner/bungeeBans/BanManager.java

@@ -0,0 +1,66 @@
+package com.redstoner.bungeeBans;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonSyntaxException;
+import com.redstoner.bungeeBans.json.Ban;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class BanManager<T extends Ban> {
+	private Gson gson = new Gson();
+	private File file;
+
+	private Class<T> type;
+
+	private List<T> bans = new ArrayList<>();
+
+	BanManager(File file, Class<T> type) {
+		this.file = file;
+		this.type = type;
+	}
+
+	public void loadBans() throws JsonSyntaxException, IOException {
+		String json = new String(Files.readAllBytes(file.toPath()));
+
+		try {
+			@SuppressWarnings ("unchecked")
+			T[] bans = gson.fromJson(json, (Class<T[]>) java.lang.reflect.Array.newInstance(type, 0).getClass());
+			if (bans != null) this.bans.addAll(Arrays.asList(bans));
+		} catch (ClassCastException e) {
+			//IGNORE
+			e.printStackTrace();
+		}
+	}
+
+	public void saveBans() throws IOException {
+		String json = gson.toJson(bans);
+
+		FileOutputStream outputStream = new FileOutputStream(file);
+		outputStream.write(json.getBytes());
+		outputStream.close();
+	}
+
+	public void addBan(T ban) {
+		this.bans.add(ban);
+	}
+
+	public void removeBan(T ban) {
+		this.bans.remove(ban);
+	}
+
+	public T getBan(String identifier) {
+		for (T ban : bans) {
+			if (ban.getIdentifier().equals(identifier)) {
+				return ban;
+			}
+		}
+
+		return null;
+	}
+}

src/main/java/com/redstoner/bungeeBans/Main.java

@@ -0,0 +1,91 @@
+package com.redstoner.bungeeBans;
+
+import com.redstoner.bungeeBans.commands.BanCommand;
+import com.redstoner.bungeeBans.commands.GetBanCommand;
+import com.redstoner.bungeeBans.commands.UnbanCommand;
+import com.redstoner.bungeeBans.json.PlayerBan;
+import net.md_5.bungee.api.plugin.Plugin;
+import net.md_5.bungee.api.plugin.PluginManager;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+
+public class Main extends Plugin {
+	private File bansFile = new File("banned-players.json");
+
+	private BanManager<PlayerBan> playerBanManager = new BanManager<>(bansFile, PlayerBan.class);
+
+	private boolean shouldSave = true;
+
+	@Override
+	public void onEnable() {
+		try {
+			getLogger().info("Loading bans...");
+
+			playerBanManager.loadBans();
+
+			getLogger().info("Loaded bans!");
+		} catch (FileNotFoundException e) {
+			getLogger().warning("Bans file does not exist! Creating!");
+
+			try {
+				if (bansFile.createNewFile()) {
+					getLogger().info("File created! Retrying load...");
+					onEnable();
+					return;
+				} else {
+					getLogger().severe("File could not be created! Disabling!");
+				}
+			} catch (IOException e2) {
+				getLogger().severe("File could not be created! Disabling!");
+				getLogger().severe(e2.getMessage());
+				e2.printStackTrace();
+			}
+
+			disable();
+			return;
+		} catch (Exception e) {
+			getLogger().severe("Failed to load bans: " + e.getMessage());
+			e.printStackTrace();
+
+			disable();
+			return;
+		}
+
+		PluginManager pm = getProxy().getPluginManager();
+
+		pm.registerCommand(this, new BanCommand(playerBanManager, this));
+		pm.registerCommand(this, new UnbanCommand(playerBanManager));
+		pm.registerCommand(this, new GetBanCommand(playerBanManager));
+
+		pm.registerListener(this, new BanJoinListener<>(playerBanManager));
+	}
+
+	@Override
+	public void onDisable() {
+		if (shouldSave) {
+			try {
+				playerBanManager.saveBans();
+				getLogger().info("Saved bans to file!");
+			} catch (IOException e) {
+				getLogger().severe("Failed to save bans: " + e.getMessage());
+				e.printStackTrace();
+			}
+		}
+	}
+
+	private void disable() {
+		getLogger().severe("Disabling plugin!");
+
+		shouldSave = false;
+		this.onDisable();
+
+		PluginManager pm = getProxy().getPluginManager();
+
+		pm.unregisterListeners(this);
+		pm.unregisterCommands(this);
+	}
+
+
+}

src/main/java/com/redstoner/bungeeBans/Util.java

@@ -0,0 +1,23 @@
+package com.redstoner.bungeeBans;
+
+import com.mojang.api.profiles.HttpProfileRepository;
+import com.mojang.api.profiles.Profile;
+
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
+
+public class Util {
+	private static final HttpProfileRepository profileRepo = new HttpProfileRepository("minecraft");
+
+	public static String dashUUID(String uuid) {
+		return uuid.replaceFirst("([0-9a-fA-F]{8})([0-9a-fA-F]{4})([0-9a-fA-F]{4})([0-9a-fA-F]{4})([0-9a-fA-F]+)", "$1-$2-$3-$4-$5");
+	}
+
+	public static String getNow() {
+		return ZonedDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss Z"));
+	}
+
+	public static Profile[] findProfilesByNames(String... names) {
+		return profileRepo.findProfilesByNames(names);
+	}
+}

src/main/java/com/redstoner/bungeeBans/commands/BanCommand.java

@@ -0,0 +1,102 @@
+package com.redstoner.bungeeBans.commands;
+
+import com.mojang.api.profiles.Profile;
+import com.redstoner.bungeeBans.BanManager;
+import com.redstoner.bungeeBans.Main;
+import com.redstoner.bungeeBans.Util;
+import com.redstoner.bungeeBans.json.PlayerBan;
+import net.md_5.bungee.api.ChatColor;
+import net.md_5.bungee.api.CommandSender;
+import net.md_5.bungee.api.chat.ComponentBuilder;
+import net.md_5.bungee.api.chat.TextComponent;
+import net.md_5.bungee.api.connection.ProxiedPlayer;
+import net.md_5.bungee.api.plugin.Command;
+
+import java.io.IOException;
+import java.util.Arrays;
+
+public class BanCommand extends Command {
+	private BanManager<PlayerBan> bm;
+	private Main                  plugin;
+
+	public BanCommand(BanManager<PlayerBan> bm, Main plugin) {
+		super("ban", "bungeeBans.ban");
+
+		this.bm = bm;
+		this.plugin = plugin;
+	}
+
+	@Override
+	public void execute(CommandSender sender, String[] args) {
+		String reason = "Banned by an operator.";
+
+		switch (args.length) {
+			case 0:
+				sender.sendMessage(
+						new ComponentBuilder("Usage: ")
+								.append(ChatColor.AQUA + "/ban ")
+								.append(ChatColor.GOLD + "<username> ")
+								.append(ChatColor.YELLOW + "[reason]")
+								.create()
+				);
+			case 1:
+				break;
+			default:
+				reason = String.join(" ", Arrays.copyOfRange(args, 1, args.length));
+				break;
+		}
+
+		Profile[] profiles = Util.findProfilesByNames(args[0]);
+
+		if (profiles.length != 1) {
+			sender.sendMessage(new TextComponent(ChatColor.RED + "Invalid name!"));
+			return;
+		}
+
+		String uuid    = Util.dashUUID(profiles[0].getId());
+		String name    = profiles[0].getName();
+		String expires = "forever"; //TODO: expiry option
+
+		if (bm.getBan(uuid) != null) {
+			sender.sendMessage(new TextComponent(ChatColor.RED + "That player is already banned!"));
+			return;
+		}
+
+		PlayerBan ban = new PlayerBan(uuid, name, Util.getNow(), sender.getName(), expires, reason);
+		bm.addBan(ban);
+
+		try {
+			bm.saveBans();
+			sender.sendMessage(new TextComponent(ChatColor.GREEN + "Saved bans to file!"));
+		} catch (IOException e) {
+			sender.sendMessage(new TextComponent(ChatColor.RED + "Failed to save bans to file!"));
+			e.printStackTrace();
+
+			bm.removeBan(ban);
+			return;
+		}
+
+		ProxiedPlayer proxiedPlayer = plugin.getProxy().getPlayer(name);
+
+		if (proxiedPlayer != null) {
+			proxiedPlayer.disconnect(
+					new ComponentBuilder(ChatColor.RED + "You were banned by ")
+							.append(ChatColor.AQUA + sender.getName())
+							.append(ChatColor.RED + " for ")
+							.append(ChatColor.YELLOW + reason)
+							.create()
+			);
+		}
+
+
+		sender.sendMessage(
+				new ComponentBuilder(ChatColor.GREEN + "Banned player ")
+						.append(ChatColor.AQUA + name)
+						.append(ChatColor.GREEN + " with uuid ")
+						.append(ChatColor.AQUA + uuid)
+						.append(ChatColor.GREEN + " and reason ")
+						.append(ChatColor.AQUA + reason)
+						.create()
+		);
+	}
+}

src/main/java/com/redstoner/bungeeBans/commands/GetBanCommand.java

@@ -0,0 +1,66 @@
+package com.redstoner.bungeeBans.commands;
+
+import com.mojang.api.profiles.Profile;
+import com.redstoner.bungeeBans.BanManager;
+import com.redstoner.bungeeBans.Util;
+import com.redstoner.bungeeBans.json.PlayerBan;
+import net.md_5.bungee.api.ChatColor;
+import net.md_5.bungee.api.CommandSender;
+import net.md_5.bungee.api.chat.ComponentBuilder;
+import net.md_5.bungee.api.chat.TextComponent;
+import net.md_5.bungee.api.plugin.Command;
+
+public class GetBanCommand extends Command {
+	private BanManager<PlayerBan> bm;
+
+	public GetBanCommand(BanManager<PlayerBan> bm) {
+		super("getban", "bungeebans.getban");
+
+		this.bm = bm;
+	}
+
+	@Override
+	public void execute(CommandSender sender, String[] args) {
+		if (args.length != 1) {
+			sender.sendMessage(
+					new ComponentBuilder(ChatColor.RED + "Invalid command! ")
+							.append("Usage: ")
+							.append(ChatColor.AQUA + "/getban ")
+							.append(ChatColor.GOLD + "<username> ")
+							.create()
+			);
+
+			return;
+		}
+
+		Profile[] profiles = Util.findProfilesByNames(args[0]);
+
+		if (profiles.length != 1) {
+			sender.sendMessage(new TextComponent(ChatColor.RED + "Invalid name!"));
+			return;
+		}
+
+		String uuid = Util.dashUUID(profiles[0].getId());
+		String name = profiles[0].getName();
+
+		PlayerBan ban = bm.getBan(uuid);
+
+		if (ban == null) {
+			sender.sendMessage(new TextComponent(ChatColor.RED + "That player is not banned!"));
+			return;
+		}
+
+		sender.sendMessage(
+				new ComponentBuilder(ChatColor.GREEN + "Player ")
+						.append(ChatColor.AQUA + name)
+						.append(ChatColor.GREEN + " with uuid ")
+						.append(ChatColor.AQUA + uuid)
+						.append(ChatColor.GREEN + " is banned for ")
+						.append(ChatColor.AQUA + ban.getReason())
+						.append(ChatColor.GREEN + " until ")
+						.append(ChatColor.AQUA + ban.getExpires())
+						.create()
+		);
+
+	}
+}

src/main/java/com/redstoner/bungeeBans/commands/UnbanCommand.java

@@ -0,0 +1,80 @@
+package com.redstoner.bungeeBans.commands;
+
+import com.mojang.api.profiles.HttpProfileRepository;
+import com.mojang.api.profiles.Profile;
+import com.redstoner.bungeeBans.BanManager;
+import com.redstoner.bungeeBans.Util;
+import com.redstoner.bungeeBans.json.PlayerBan;
+import net.md_5.bungee.api.ChatColor;
+import net.md_5.bungee.api.CommandSender;
+import net.md_5.bungee.api.chat.ComponentBuilder;
+import net.md_5.bungee.api.chat.TextComponent;
+import net.md_5.bungee.api.plugin.Command;
+
+import java.io.IOException;
+
+public class UnbanCommand extends Command {
+	HttpProfileRepository profileRepo = new HttpProfileRepository("minecraft");
+
+	private BanManager<PlayerBan> bm;
+
+	public UnbanCommand(BanManager<PlayerBan> bm) {
+		super("unban", "bungeebans.unban", "pardon");
+
+		this.bm = bm;
+	}
+
+	@Override
+	public void execute(CommandSender sender, String[] args) {
+		if (args.length != 1) {
+			sender.sendMessage(
+					new ComponentBuilder(ChatColor.RED + "Invalid command! ")
+							.append("Usage: ")
+							.append(ChatColor.AQUA + "/unban ")
+							.append(ChatColor.GOLD + "<username> ")
+							.create()
+			);
+
+			return;
+		}
+
+		Profile[] profiles = profileRepo.findProfilesByNames(args[0]);
+
+		if (profiles.length != 1) {
+			sender.sendMessage(new TextComponent(ChatColor.RED + "Invalid name!"));
+			return;
+		}
+
+		String uuid = Util.dashUUID(profiles[0].getId());
+		String name = profiles[0].getName();
+
+		PlayerBan ban = bm.getBan(uuid);
+
+		if (ban == null) {
+			sender.sendMessage(new TextComponent(ChatColor.RED + "That player is not banned!"));
+			return;
+		}
+
+		bm.removeBan(ban);
+
+		try {
+			bm.saveBans();
+			sender.sendMessage(new TextComponent(ChatColor.GREEN + "Saved bans to file!"));
+		} catch (IOException e) {
+			sender.sendMessage(new TextComponent(ChatColor.RED + "Failed to save bans to file!"));
+			e.printStackTrace();
+
+			bm.addBan(ban);
+			return;
+		}
+
+		sender.sendMessage(
+				new ComponentBuilder(ChatColor.GREEN + "Unbanned player ")
+						.append(ChatColor.AQUA + name)
+						.append(ChatColor.GREEN + " with uuid ")
+						.append(ChatColor.AQUA + uuid)
+						.create()
+		);
+
+	}
+}

src/main/java/com/redstoner/bungeeBans/json/Ban.java

@@ -0,0 +1,49 @@
+package com.redstoner.bungeeBans.json;
+
+public abstract class Ban {
+	private String created;
+	private String source;
+	private String expires;
+	private String reason;
+
+	protected Ban(String created, String source, String expires, String reason) {
+		this.created = created;
+		this.source = source;
+		this.expires = expires;
+		this.reason = reason;
+	}
+
+	public abstract String getIdentifier();
+
+	public String getCreated() {
+		return created;
+	}
+
+	public void setCreated(String created) {
+		this.created = created;
+	}
+
+	public String getSource() {
+		return source;
+	}
+
+	public void setSource(String source) {
+		this.source = source;
+	}
+
+	public String getExpires() {
+		return expires;
+	}
+
+	public void setExpires(String expires) {
+		this.expires = expires;
+	}
+
+	public String getReason() {
+		return reason;
+	}
+
+	public void setReason(String reason) {
+		this.reason = reason;
+	}
+}

src/main/java/com/redstoner/bungeeBans/json/IPBan.java

@@ -0,0 +1,25 @@
+package com.redstoner.bungeeBans.json;
+
+public class IPBan extends Ban {
+	private String ip;
+
+
+	public IPBan(String ip, String created, String source, String expires, String reason) {
+		super(created, source, expires, reason);
+
+		this.ip = ip;
+	}
+
+	@Override
+	public String getIdentifier() {
+		return ip;
+	}
+
+	public String getIp() {
+		return ip;
+	}
+
+	public void setIp(String ip) {
+		this.ip = ip;
+	}
+}

src/main/java/com/redstoner/bungeeBans/json/PlayerBan.java

@@ -0,0 +1,35 @@
+package com.redstoner.bungeeBans.json;
+
+public class PlayerBan extends Ban {
+	private String uuid;
+	private String name;
+
+
+	public PlayerBan(String uuid, String name, String created, String source, String expires, String reason) {
+		super(created, source, expires, reason);
+
+		this.uuid = uuid;
+		this.name = name;
+	}
+
+	@Override
+	public String getIdentifier() {
+		return uuid;
+	}
+
+	public String getUuid() {
+		return uuid;
+	}
+
+	public void setUuid(String uuid) {
+		this.uuid = uuid;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+}

src/main/resources/plugin.yml

@@ -0,0 +1,4 @@
+name: BungeeBans
+main: com.redstoner.bungeeBans.Main
+version: 1.0
+author: psrcek