reorganize stuff

CommandWhitelistBukkit/src/main/java/eu/endermite/commandwhitelist/bukkit/CommandWhitelistBukkit.java

@@ -0,0 +1,114 @@
+package eu.endermite.commandwhitelist.bukkit;
+
+import eu.endermite.commandwhitelist.bukkit.listeners.PacketCommandPreProcessListener;
+import eu.endermite.commandwhitelist.bukkit.listeners.PlayerCommandPreProcessListener;
+import eu.endermite.commandwhitelist.bukkit.listeners.PlayerCommandSendListener;
+import eu.endermite.commandwhitelist.bukkit.listeners.TabCompleteBlockerListener;
+import eu.endermite.commandwhitelist.common.CWGroup;
+import eu.endermite.commandwhitelist.common.ConfigCache;
+import eu.endermite.commandwhitelist.bukkit.command.MainCommand;
+import eu.endermite.commandwhitelist.bukkit.metrics.BukkitMetrics;
+import net.kyori.adventure.platform.bukkit.BukkitAudiences;
+import net.kyori.adventure.text.minimessage.MiniMessage;
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.Plugin;
+import org.bukkit.plugin.java.JavaPlugin;
+
+import java.io.File;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+
+public class CommandWhitelistBukkit extends JavaPlugin {
+
+    private static CommandWhitelistBukkit commandWhitelist;
+    private static ConfigCache configCache;
+    private static BukkitAudiences audiences;
+
+    @Override
+    public void onEnable() {
+
+        commandWhitelist = this;
+        audiences = BukkitAudiences.create(this);
+
+        reloadPluginConfig();
+
+        Plugin protocollib = getServer().getPluginManager().getPlugin("ProtocolLib");
+
+        if (!getConfigCache().useProtocolLib || protocollib == null || !protocollib.isEnabled()) {
+            getServer().getPluginManager().registerEvents(new PlayerCommandPreProcessListener(), this);
+            getServer().getPluginManager().registerEvents(new PlayerCommandSendListener(), this);
+        } else {
+            PacketCommandPreProcessListener.protocol(this);
+            getLogger().info(ChatColor.AQUA + "Using ProtocolLib for command filter!");
+        }
+        getServer().getPluginManager().registerEvents(new TabCompleteBlockerListener(), this);
+
+        getCommand("commandwhitelist").setExecutor(new MainCommand());
+
+        int pluginId = 8705;
+        new BukkitMetrics(this, pluginId);
+    }
+
+    private void reloadPluginConfig() {
+        File configFile = new File("plugins/CommandWhitelist/config.yml");
+        configCache = new ConfigCache(configFile, true);
+
+    }
+
+    public void reloadPluginConfig(CommandSender sender) {
+        getServer().getScheduler().runTaskAsynchronously(this, () -> {
+            reloadPluginConfig();
+            for (Player p : Bukkit.getOnlinePlayers()) {
+                p.updateCommands();
+            }
+            audiences.sender(sender).sendMessage(MiniMessage.markdown().parse(configCache.prefix + configCache.config_reloaded));
+        });
+    }
+
+    public static CommandWhitelistBukkit getPlugin() {
+        return commandWhitelist;
+    }
+
+    public static ConfigCache getConfigCache() {
+        return configCache;
+    }
+
+    public static BukkitAudiences getAudiences() {
+        return audiences;
+    }
+
+    /**
+     * @param player Bukkit Player
+     * @return commands available to the player
+     */
+    public static HashSet<String> getCommands(org.bukkit.entity.Player player, HashMap<String, CWGroup> groups) {
+        HashSet<String> commandList = new HashSet<>();
+        for (Map.Entry<String, CWGroup> s : groups.entrySet()) {
+            if (s.getKey().equalsIgnoreCase("default"))
+                commandList.addAll(s.getValue().getCommands());
+            else if (player.hasPermission("commandwhitelist.group." + s.getKey()))
+                commandList.addAll(s.getValue().getCommands());
+        }
+        return commandList;
+    }
+
+    /**
+     * @param player Bukkit Player
+     * @return subcommands unavailable for the player
+     */
+    public static HashSet<String> getSuggestions(org.bukkit.entity.Player player, HashMap<String, CWGroup> groups) {
+        HashSet<String> suggestionList = new HashSet<>();
+        for (Map.Entry<String, CWGroup> s : groups.entrySet()) {
+            if (s.getKey().equalsIgnoreCase("default"))
+                suggestionList.addAll(s.getValue().getSubCommands());
+            if (player.hasPermission("commandwhitelist.group." + s.getKey()))
+                continue;
+            suggestionList.addAll(s.getValue().getSubCommands());
+        }
+        return suggestionList;
+    }
+}

CommandWhitelistBukkit/src/main/java/eu/endermite/commandwhitelist/bukkit/command/BukkitCommandHandler.java

@@ -0,0 +1,42 @@
+package eu.endermite.commandwhitelist.bukkit.command;
+
+import eu.endermite.commandwhitelist.common.CWGroup;
+
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+
+public class BukkitCommandHandler {
+
+    /**
+     * @param player Bukkit Player
+     * @return commands available to the player
+     */
+    public static HashSet<String> getCommands(org.bukkit.entity.Player player, HashMap<String, CWGroup> groups) {
+        HashSet<String> commandList = new HashSet<>();
+        for (Map.Entry<String, CWGroup> s : groups.entrySet()) {
+            if (s.getKey().equalsIgnoreCase("default"))
+                commandList.addAll(s.getValue().getCommands());
+            else if (player.hasPermission("commandwhitelist.group." + s.getKey()))
+                commandList.addAll(s.getValue().getCommands());
+        }
+        return commandList;
+    }
+
+    /**
+     * @param player Bukkit Player
+     * @return subcommands unavailable for the player
+     */
+    public static HashSet<String> getSuggestions(org.bukkit.entity.Player player, HashMap<String, CWGroup> groups) {
+        HashSet<String> suggestionList = new HashSet<>();
+        for (Map.Entry<String, CWGroup> s : groups.entrySet()) {
+            if (s.getKey().equalsIgnoreCase("default"))
+                suggestionList.addAll(s.getValue().getSubCommands());
+            if (player.hasPermission("commandwhitelist.group." + s.getKey()))
+                continue;
+            suggestionList.addAll(s.getValue().getSubCommands());
+        }
+        return suggestionList;
+    }
+
+}

CommandWhitelistBukkit/src/main/java/eu/endermite/commandwhitelist/bukkit/command/MainCommand.java

@@ -0,0 +1,66 @@
+package eu.endermite.commandwhitelist.bukkit.command;
+
+import eu.endermite.commandwhitelist.common.commands.CWCommand;
+import eu.endermite.commandwhitelist.bukkit.CommandWhitelistBukkit;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.minimessage.MiniMessage;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+
+public class MainCommand implements CommandExecutor {
+
+    @Override
+    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
+        if (args.length == 0) {
+            // send help
+            return true;
+        }
+
+        try {
+            CWCommand.CommandType commandType = CWCommand.CommandType.valueOf(args[0]);
+            switch (commandType) {
+                case RELOAD:
+                    if (!sender.hasPermission("commandwhitelist.reload")) {
+                        CommandWhitelistBukkit.getAudiences().sender(sender).sendMessage(MiniMessage.markdown().parse(CommandWhitelistBukkit.getConfigCache().prefix + CommandWhitelistBukkit.getConfigCache().no_permission));
+                        return true;
+                    }
+                    CommandWhitelistBukkit.getPlugin().reloadPluginConfig(sender);
+                    return true;
+                case ADD:
+                    if (!sender.hasPermission("commandwhitelist.admin")) {
+                        CommandWhitelistBukkit.getAudiences().sender(sender).sendMessage(MiniMessage.markdown().parse(CommandWhitelistBukkit.getConfigCache().prefix + CommandWhitelistBukkit.getConfigCache().no_permission));
+                        return true;
+                    }
+                    if (args.length == 3) {
+                        if (CWCommand.addToWhitelist(CommandWhitelistBukkit.getConfigCache(), args[2], args[1]))
+                            CommandWhitelistBukkit.getAudiences().sender(sender).sendMessage(MiniMessage.markdown().parse(CommandWhitelistBukkit.getConfigCache().prefix + CommandWhitelistBukkit.getConfigCache().added_to_whitelist));
+                        else
+                            CommandWhitelistBukkit.getAudiences().sender(sender).sendMessage(MiniMessage.markdown().parse(CommandWhitelistBukkit.getConfigCache().prefix + CommandWhitelistBukkit.getConfigCache().group_doesnt_exist));
+                    } else
+                        CommandWhitelistBukkit.getAudiences().sender(sender).sendMessage(Component.text("/cw add <group> <command>"));
+                    return true;
+                case REMOVE:
+                    if (!sender.hasPermission("commandwhitelist.admin")) {
+                        CommandWhitelistBukkit.getAudiences().sender(sender).sendMessage(MiniMessage.markdown().parse(CommandWhitelistBukkit.getConfigCache().prefix + CommandWhitelistBukkit.getConfigCache().no_permission));
+                        return true;
+                    }
+                    if (args.length == 3) {
+                        if (CWCommand.removeFromWhitelist(CommandWhitelistBukkit.getConfigCache(), args[2], args[1]))
+                            CommandWhitelistBukkit.getAudiences().sender(sender).sendMessage(MiniMessage.markdown().parse(CommandWhitelistBukkit.getConfigCache().prefix + CommandWhitelistBukkit.getConfigCache().removed_from_whitelist));
+                        else
+                            CommandWhitelistBukkit.getAudiences().sender(sender).sendMessage(MiniMessage.markdown().parse(CommandWhitelistBukkit.getConfigCache().prefix + CommandWhitelistBukkit.getConfigCache().group_doesnt_exist));
+                    } else
+                        CommandWhitelistBukkit.getAudiences().sender(sender).sendMessage(Component.text("/cw remove <group> <command>"));
+                    return true;
+                case HELP:
+                default:
+                    // send help
+            }
+
+        } catch (IllegalArgumentException e) {
+            // send help
+        }
+        return true;
+    }
+}

CommandWhitelistBukkit/src/main/java/eu/endermite/commandwhitelist/bukkit/listeners/PacketCommandPreProcessListener.java

@@ -0,0 +1,60 @@
+package eu.endermite.commandwhitelist.bukkit.listeners;
+
+import com.comphenix.protocol.PacketType;
+import com.comphenix.protocol.ProtocolLibrary;
+import com.comphenix.protocol.ProtocolManager;
+import com.comphenix.protocol.events.ListenerPriority;
+import com.comphenix.protocol.events.PacketAdapter;
+import com.comphenix.protocol.events.PacketContainer;
+import com.comphenix.protocol.events.PacketEvent;
+import eu.endermite.commandwhitelist.common.CommandUtil;
+import eu.endermite.commandwhitelist.common.ConfigCache;
+import eu.endermite.commandwhitelist.bukkit.CommandWhitelistBukkit;
+import net.kyori.adventure.text.minimessage.MiniMessage;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.Plugin;
+import java.util.HashSet;
+
+public class PacketCommandPreProcessListener {
+
+    public static void protocol(CommandWhitelistBukkit plugin) {
+        ProtocolManager protocolManager = ProtocolLibrary.getProtocolManager();
+        commandExecListener(protocolManager, plugin);
+    }
+
+    public static void commandExecListener(ProtocolManager protocolManager, Plugin plugin) {
+        protocolManager.addPacketListener(new PacketAdapter(plugin, ListenerPriority.HIGHEST, PacketType.Play.Client.CHAT) {
+            @Override
+            public void onPacketReceiving(PacketEvent event) {
+                PacketContainer packet = event.getPacket();
+                String string = packet.getStrings().read(0);
+                if (!string.startsWith("/"))
+                    return;
+                Player player = event.getPlayer();
+                if (player.hasPermission("commandwhitelist.bypass"))
+                    return;
+
+                ConfigCache configCache = CommandWhitelistBukkit.getConfigCache();
+
+                String label = CommandUtil.getCommandLabel(string.toLowerCase());
+                HashSet<String> commands = CommandWhitelistBukkit.getCommands(player, configCache.getGroupList());
+                if (!commands.contains(label)) {
+                    event.setCancelled(true);
+                    ConfigCache config = CommandWhitelistBukkit.getConfigCache();
+                    CommandWhitelistBukkit.getAudiences().player(player).sendMessage(MiniMessage.markdown().parse(config.prefix + config.command_denied));
+                    return;
+                }
+
+                HashSet<String> bannedSubCommands = CommandWhitelistBukkit.getSuggestions(player, configCache.getGroupList());
+                for (String bannedSubCommand : bannedSubCommands) {
+                    if (string.toLowerCase().substring(1).startsWith(bannedSubCommand)) {
+                        event.setCancelled(true);
+                        ConfigCache config = CommandWhitelistBukkit.getConfigCache();
+                        CommandWhitelistBukkit.getAudiences().player(player).sendMessage(MiniMessage.markdown().parse(config.prefix + config.subcommand_denied));
+                        return;
+                    }
+                }
+            }
+        });
+    }
+}

CommandWhitelistBukkit/src/main/java/eu/endermite/commandwhitelist/bukkit/listeners/PlayerCommandPreProcessListener.java

@@ -0,0 +1,45 @@
+package eu.endermite.commandwhitelist.bukkit.listeners;
+
+import eu.endermite.commandwhitelist.common.CommandUtil;
+import eu.endermite.commandwhitelist.bukkit.CommandWhitelistBukkit;
+import eu.endermite.commandwhitelist.common.ConfigCache;
+import net.kyori.adventure.platform.bukkit.BukkitAudiences;
+import net.kyori.adventure.text.minimessage.MiniMessage;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import java.util.HashSet;
+
+public class PlayerCommandPreProcessListener implements Listener {
+    @EventHandler(priority = EventPriority.HIGHEST)
+    public void PlayerCommandSendEvent(org.bukkit.event.player.PlayerCommandPreprocessEvent event) {
+        Player player = event.getPlayer();
+        if (player.hasPermission("commandwhitelist.bypass"))
+            return;
+        String label = CommandUtil.getCommandLabel(event.getMessage().toLowerCase());
+
+        ConfigCache configCache = CommandWhitelistBukkit.getConfigCache();
+        BukkitAudiences audiences = CommandWhitelistBukkit.getAudiences();
+
+        HashSet<String> commands = CommandWhitelistBukkit.getCommands(player, configCache.getGroupList());
+        if (!commands.contains(label)) {
+            event.setCancelled(true);
+            ConfigCache config = CommandWhitelistBukkit.getConfigCache();
+            audiences.player(player).sendMessage(MiniMessage.markdown().parse(config.prefix + config.command_denied));
+            return;
+        }
+
+        HashSet<String> bannedSubCommands = CommandWhitelistBukkit.getSuggestions(player, configCache.getGroupList());
+        for (String bannedSubCommand : bannedSubCommands) {
+            if (event.getMessage().toLowerCase().substring(1).startsWith(bannedSubCommand)) {
+                event.setCancelled(true);
+                ConfigCache config = CommandWhitelistBukkit.getConfigCache();
+                audiences.player(player).sendMessage(MiniMessage.markdown().parse(config.prefix + config.subcommand_denied));
+                return;
+            }
+        }
+
+
+    }
+}

CommandWhitelistBukkit/src/main/java/eu/endermite/commandwhitelist/bukkit/listeners/PlayerCommandSendListener.java

@@ -0,0 +1,19 @@
+package eu.endermite.commandwhitelist.bukkit.listeners;
+
+import eu.endermite.commandwhitelist.bukkit.CommandWhitelistBukkit;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import java.util.*;
+
+public class PlayerCommandSendListener implements Listener {
+    @EventHandler(priority = EventPriority.HIGHEST)
+    public void PlayerCommandSendEvent(org.bukkit.event.player.PlayerCommandSendEvent event) {
+        Player player = event.getPlayer();
+        if (player.hasPermission("commandwhitelist.bypass"))
+            return;
+        HashSet<String> commandList = CommandWhitelistBukkit.getCommands(player, CommandWhitelistBukkit.getConfigCache().getGroupList());
+        event.getCommands().removeIf((cmd) -> !commandList.contains(cmd));
+    }
+}

CommandWhitelistBukkit/src/main/java/eu/endermite/commandwhitelist/bukkit/listeners/TabCompleteBlockerListener.java

@@ -0,0 +1,24 @@
+package eu.endermite.commandwhitelist.bukkit.listeners;
+
+import eu.endermite.commandwhitelist.bukkit.CommandWhitelistBukkit;
+import eu.endermite.commandwhitelist.common.CommandUtil;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+
+public class TabCompleteBlockerListener implements Listener {
+    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
+    public void onCommandTabComplete(org.bukkit.event.server.TabCompleteEvent event) {
+        if (!(event.getSender() instanceof Player))
+            return;
+        Player player = (Player) event.getSender();
+        event.setCompletions(
+                CommandUtil.filterSuggestions(
+                    event.getBuffer(),
+                    event.getCompletions(),
+                    CommandWhitelistBukkit.getSuggestions(player, CommandWhitelistBukkit.getConfigCache().getGroupList())
+                )
+        );
+    }
+}

CommandWhitelistBukkit/src/main/java/eu/endermite/commandwhitelist/bukkit/metrics/BukkitMetrics.java

@@ -0,0 +1,366 @@
+package eu.endermite.commandwhitelist.bukkit.metrics;
+
+import com.google.gson.JsonArray;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import org.bukkit.Bukkit;
+import org.bukkit.configuration.file.YamlConfiguration;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.Plugin;
+import org.bukkit.plugin.RegisteredServiceProvider;
+import org.bukkit.plugin.ServicePriority;
+import javax.net.ssl.HttpsURLConnection;
+import java.io.*;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.net.URL;
+import java.nio.charset.StandardCharsets;
+import java.util.Collection;
+import java.util.Timer;
+import java.util.TimerTask;
+import java.util.UUID;
+import java.util.logging.Level;
+import java.util.zip.GZIPOutputStream;
+
+/**
+ * bStats collects some data for plugin authors.
+ * <p>
+ * Check out https://bStats.org/ to learn more about bStats!
+ */
+@SuppressWarnings({"WeakerAccess", "unused"})
+public class BukkitMetrics {
+
+    static {
+        // You can use the property to disable the check in your test environment
+        if (System.getProperty("bstats.relocatecheck") == null || !System.getProperty("bstats.relocatecheck").equals("false")) {
+            // Maven's Relocate is clever and changes strings, too. So we have to use this little "trick" ... :D
+            final String defaultPackage = new String(
+                    new byte[]{'o', 'r', 'g', '.', 'b', 's', 't', 'a', 't', 's', '.', 'b', 'u', 'k', 'k', 'i', 't'});
+            final String examplePackage = new String(new byte[]{'y', 'o', 'u', 'r', '.', 'p', 'a', 'c', 'k', 'a', 'g', 'e'});
+            // We want to make sure nobody just copy & pastes the example and use the wrong package names
+            if (BukkitMetrics.class.getPackage().getName().equals(defaultPackage) || BukkitMetrics.class.getPackage().getName().equals(examplePackage)) {
+                throw new IllegalStateException("bStats Metrics class has not been relocated correctly!");
+            }
+        }
+    }
+
+    // The version of this bStats class
+    public static final int B_STATS_VERSION = 1;
+
+    // The url to which the data is sent
+    private static final String URL = "https://bStats.org/submitData/bukkit";
+
+    // Is bStats enabled on this server?
+    private boolean enabled;
+
+    // Should failed requests be logged?
+    private static boolean logFailedRequests;
+
+    // Should the sent data be logged?
+    private static boolean logSentData;
+
+    // Should the response text be logged?
+    private static boolean logResponseStatusText;
+
+    // The uuid of the server
+    private static String serverUUID;
+
+    // The plugin
+    private final Plugin plugin;
+
+    // The plugin id
+    private final int pluginId;
+
+    /**
+     * Class constructor.
+     *
+     * @param plugin The plugin which stats should be submitted.
+     * @param pluginId The id of the plugin.
+     *                 It can be found at <a href="https://bstats.org/what-is-my-plugin-id">What is my plugin id?</a>
+     */
+    public BukkitMetrics(Plugin plugin, int pluginId) {
+        if (plugin == null) {
+            throw new IllegalArgumentException("Plugin cannot be null!");
+        }
+        this.plugin = plugin;
+        this.pluginId = pluginId;
+
+        // Get the config file
+        File bStatsFolder = new File(plugin.getDataFolder().getParentFile(), "bStats");
+        File configFile = new File(bStatsFolder, "config.yml");
+        YamlConfiguration config = YamlConfiguration.loadConfiguration(configFile);
+
+        // Check if the config file exists
+        if (!config.isSet("serverUuid")) {
+
+            // Add default values
+            config.addDefault("enabled", true);
+            // Every server gets it's unique random id.
+            config.addDefault("serverUuid", UUID.randomUUID().toString());
+            // Should failed request be logged?
+            config.addDefault("logFailedRequests", false);
+            // Should the sent data be logged?
+            config.addDefault("logSentData", false);
+            // Should the response text be logged?
+            config.addDefault("logResponseStatusText", false);
+
+            // Inform the server owners about bStats
+            config.options().header(
+                    "bStats collects some data for plugin authors like how many servers are using their plugins.\n" +
+                            "To honor their work, you should not disable it.\n" +
+                            "This has nearly no effect on the server performance!\n" +
+                            "Check out https://bStats.org/ to learn more :)"
+            ).copyDefaults(true);
+            try {
+                config.save(configFile);
+            } catch (IOException ignored) { }
+        }
+
+        // Load the data
+        serverUUID = config.getString("serverUuid");
+        logFailedRequests = config.getBoolean("logFailedRequests", false);
+        enabled = config.getBoolean("enabled", true);
+        logSentData = config.getBoolean("logSentData", false);
+        logResponseStatusText = config.getBoolean("logResponseStatusText", false);
+        if (enabled) {
+            boolean found = false;
+            // Search for all other bStats Metrics classes to see if we are the first one
+            for (Class<?> service : Bukkit.getServicesManager().getKnownServices()) {
+                try {
+                    service.getField("B_STATS_VERSION"); // Our identifier :)
+                    found = true; // We aren't the first
+                    break;
+                } catch (NoSuchFieldException ignored) { }
+            }
+            // Register our service
+            Bukkit.getServicesManager().register(BukkitMetrics.class, this, plugin, ServicePriority.Normal);
+            if (!found) {
+                // We are the first!
+                startSubmitting();
+            }
+        }
+    }
+
+    /**
+     * Checks if bStats is enabled.
+     *
+     * @return Whether bStats is enabled or not.
+     */
+    public boolean isEnabled() {
+        return enabled;
+    }
+
+    /**
+     * Starts the Scheduler which submits our data every 30 minutes.
+     */
+    private void startSubmitting() {
+        final Timer timer = new Timer(true); // We use a timer cause the Bukkit scheduler is affected by server lags
+        timer.scheduleAtFixedRate(new TimerTask() {
+            @Override
+            public void run() {
+                if (!plugin.isEnabled()) { // Plugin was disabled
+                    timer.cancel();
+                    return;
+                }
+                // Nevertheless we want our code to run in the Bukkit main thread, so we have to use the Bukkit scheduler
+                // Don't be afraid! The connection to the bStats server is still async, only the stats collection is sync ;)
+                Bukkit.getScheduler().runTask(plugin, () -> submitData());
+            }
+        }, 1000 * 60 * 5, 1000 * 60 * 30);
+        // Submit the data every 30 minutes, first time after 5 minutes to give other plugins enough time to start
+        // WARNING: Changing the frequency has no effect but your plugin WILL be blocked/deleted!
+        // WARNING: Just don't do it!
+    }
+
+    /**
+     * Gets the plugin specific data.
+     * This method is called using Reflection.
+     *
+     * @return The plugin specific data.
+     */
+    public JsonObject getPluginData() {
+        JsonObject data = new JsonObject();
+
+        String pluginName = plugin.getDescription().getName();
+        String pluginVersion = plugin.getDescription().getVersion();
+
+        data.addProperty("pluginName", pluginName); // Append the name of the plugin
+        data.addProperty("id", pluginId); // Append the id of the plugin
+        data.addProperty("pluginVersion", pluginVersion); // Append the version of the plugin
+        data.add("customCharts", new JsonArray());
+
+        return data;
+    }
+
+    /**
+     * Gets the server specific data.
+     *
+     * @return The server specific data.
+     */
+    private JsonObject getServerData() {
+        // Minecraft specific data
+        int playerAmount;
+        try {
+            // Around MC 1.8 the return type was changed to a collection from an array,
+            // This fixes java.lang.NoSuchMethodError: org.bukkit.Bukkit.getOnlinePlayers()Ljava/util/Collection;
+            Method onlinePlayersMethod = Class.forName("org.bukkit.Server").getMethod("getOnlinePlayers");
+            playerAmount = onlinePlayersMethod.getReturnType().equals(Collection.class)
+                    ? ((Collection<?>) onlinePlayersMethod.invoke(Bukkit.getServer())).size()
+                    : ((Player[]) onlinePlayersMethod.invoke(Bukkit.getServer())).length;
+        } catch (Exception e) {
+            playerAmount = Bukkit.getOnlinePlayers().size(); // Just use the new method if the Reflection failed
+        }
+        int onlineMode = Bukkit.getOnlineMode() ? 1 : 0;
+        String bukkitVersion = Bukkit.getVersion();
+        String bukkitName = Bukkit.getName();
+
+        // OS/Java specific data
+        String javaVersion = System.getProperty("java.version");
+        String osName = System.getProperty("os.name");
+        String osArch = System.getProperty("os.arch");
+        String osVersion = System.getProperty("os.version");
+        int coreCount = Runtime.getRuntime().availableProcessors();
+
+        JsonObject data = new JsonObject();
+
+        data.addProperty("serverUUID", serverUUID);
+
+        data.addProperty("playerAmount", playerAmount);
+        data.addProperty("onlineMode", onlineMode);
+        data.addProperty("bukkitVersion", bukkitVersion);
+        data.addProperty("bukkitName", bukkitName);
+
+        data.addProperty("javaVersion", javaVersion);
+        data.addProperty("osName", osName);
+        data.addProperty("osArch", osArch);
+        data.addProperty("osVersion", osVersion);
+        data.addProperty("coreCount", coreCount);
+
+        return data;
+    }
+
+    /**
+     * Collects the data and sends it afterwards.
+     */
+    private void submitData() {
+        final JsonObject data = getServerData();
+
+        JsonArray pluginData = new JsonArray();
+        // Search for all other bStats Metrics classes to get their plugin data
+        for (Class<?> service : Bukkit.getServicesManager().getKnownServices()) {
+            try {
+                service.getField("B_STATS_VERSION"); // Our identifier :)
+
+                for (RegisteredServiceProvider<?> provider : Bukkit.getServicesManager().getRegistrations(service)) {
+                    try {
+                        Object plugin = provider.getService().getMethod("getPluginData").invoke(provider.getProvider());
+                        if (plugin instanceof JsonObject) {
+                            pluginData.add((JsonObject) plugin);
+                        } else { // old bstats version compatibility
+                            try {
+                                Class<?> jsonObjectJsonSimple = Class.forName("org.json.simple.JSONObject");
+                                if (plugin.getClass().isAssignableFrom(jsonObjectJsonSimple)) {
+                                    Method jsonStringGetter = jsonObjectJsonSimple.getDeclaredMethod("toJSONString");
+                                    jsonStringGetter.setAccessible(true);
+                                    String jsonString = (String) jsonStringGetter.invoke(plugin);
+                                    JsonObject object = new JsonParser().parse(jsonString).getAsJsonObject();
+                                    pluginData.add(object);
+                                }
+                            } catch (ClassNotFoundException e) {
+                                // minecraft version 1.14+
+                                if (logFailedRequests) {
+                                    this.plugin.getLogger().log(Level.SEVERE, "Encountered unexpected exception ", e);
+                                }
+                            }
+                        }
+                    } catch (NullPointerException | NoSuchMethodException | IllegalAccessException | InvocationTargetException ignored) {
+                    }
+                }
+            } catch (NoSuchFieldException ignored) { }
+        }
+
+        data.add("plugins", pluginData);
+
+        // Create a new thread for the connection to the bStats server
+        new Thread(() -> {
+            try {
+                // Send the data
+                sendData(plugin, data);
+            } catch (Exception e) {
+                // Something went wrong! :(
+                if (logFailedRequests) {
+                    plugin.getLogger().log(Level.WARNING, "Could not submit plugin stats of " + plugin.getName(), e);
+                }
+            }
+        }).start();
+    }
+
+    /**
+     * Sends the data to the bStats server.
+     *
+     * @param plugin Any plugin. It's just used to get a logger instance.
+     * @param data The data to send.
+     * @throws Exception If the request failed.
+     */
+    private static void sendData(Plugin plugin, JsonObject data) throws Exception {
+        if (data == null) {
+            throw new IllegalArgumentException("Data cannot be null!");
+        }
+        if (Bukkit.isPrimaryThread()) {
+            throw new IllegalAccessException("This method must not be called from the main thread!");
+        }
+        if (logSentData) {
+            plugin.getLogger().info("Sending data to bStats: " + data);
+        }
+        HttpsURLConnection connection = (HttpsURLConnection) new URL(URL).openConnection();
+
+        // Compress the data to save bandwidth
+        byte[] compressedData = compress(data.toString());
+
+        // Add headers
+        connection.setRequestMethod("POST");
+        connection.addRequestProperty("Accept", "application/json");
+        connection.addRequestProperty("Connection", "close");
+        connection.addRequestProperty("Content-Encoding", "gzip"); // We gzip our request
+        connection.addRequestProperty("Content-Length", String.valueOf(compressedData.length));
+        connection.setRequestProperty("Content-Type", "application/json"); // We send our data in JSON format
+        connection.setRequestProperty("User-Agent", "MC-Server/" + B_STATS_VERSION);
+
+        // Send data
+        connection.setDoOutput(true);
+        try (DataOutputStream outputStream = new DataOutputStream(connection.getOutputStream())) {
+            outputStream.write(compressedData);
+        }
+
+        StringBuilder builder = new StringBuilder();
+        try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(connection.getInputStream()))) {
+            String line;
+            while ((line = bufferedReader.readLine()) != null) {
+                builder.append(line);
+            }
+        }
+
+        if (logResponseStatusText) {
+            plugin.getLogger().info("Sent data to bStats and received response: " + builder);
+        }
+    }
+
+    /**
+     * Gzips the given String.
+     *
+     * @param str The string to gzip.
+     * @return The gzipped String.
+     * @throws IOException If the compression failed.
+     */
+    private static byte[] compress(final String str) throws IOException {
+        if (str == null) {
+            return null;
+        }
+        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+        try(GZIPOutputStream gzip = new GZIPOutputStream(outputStream)) {
+            gzip.write(str.getBytes(StandardCharsets.UTF_8));
+        }
+        return outputStream.toByteArray();
+    }
+
+}