Add src/net/ardakaz/exec/Exec.java

src/net/ardakaz/exec/Exec.java

@@ -0,0 +1,127 @@
+package net.ardakaz.exec;
+
+import java.io.File;
+import java.io.IOException;
+import java.lang.reflect.Field;
+import java.util.Iterator;
+import me.clip.placeholderapi.PlaceholderAPI;
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandMap;
+import org.bukkit.command.CommandSender;
+import org.bukkit.command.SimpleCommandMap;
+import org.bukkit.command.defaults.BukkitCommand;
+import org.bukkit.configuration.file.FileConfiguration;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.java.JavaPlugin;
+
+public class Exec extends JavaPlugin {
+   private File configFile;
+   private FileConfiguration config;
+
+   public void onEnable() {
+      this.loadConfig();
+      this.registerCommands();
+   }
+
+   private void registerCommands() {
+      try {
+         Field bukkitCommandMap = Bukkit.getServer().getClass().getDeclaredField("commandMap");
+         bukkitCommandMap.setAccessible(true);
+         CommandMap commandMap = (CommandMap)bukkitCommandMap.get(Bukkit.getServer());
+         if (commandMap instanceof SimpleCommandMap) {
+            Field knownCommandsField = SimpleCommandMap.class.getDeclaredField("knownCommands");
+            knownCommandsField.setAccessible(true);
+            FileConfiguration config = this.getConfig();
+            if (config.contains("commands")) {
+               Iterator var6 = config.getConfigurationSection("commands").getKeys(false).iterator();
+
+               while(var6.hasNext()) {
+                  String cmd = (String)var6.next();
+                  final String script = config.getString("commands." + cmd + ".script");
+                  String description = config.getString("commands." + cmd + ".description", "");
+                  final String permission = config.getString("commands." + cmd + ".permission", "");
+                  String usage = config.getString("commands." + cmd + ".usage", "");
+                  BukkitCommand dynamicCommand = new BukkitCommand(cmd) {
+                     public boolean execute(CommandSender sender, String label, String[] args) {
+                        return (Exec.this.new ExecCommand(script, permission)).onCommand(sender, this, label, args);
+                     }
+                  };
+                  dynamicCommand.setDescription(description);
+                  dynamicCommand.setPermission(permission);
+                  dynamicCommand.setUsage(usage);
+                  commandMap.register(cmd, dynamicCommand);
+               }
+            }
+         }
+
+         Iterator var14 = Bukkit.getOnlinePlayers().iterator();
+
+         while(var14.hasNext()) {
+            Player player = (Player)var14.next();
+            player.updateCommands();
+         }
+      } catch (Exception var12) {
+         var12.printStackTrace();
+      }
+
+   }
+
+   private void loadConfig() {
+      if (!this.getDataFolder().exists()) {
+         this.getDataFolder().mkdirs();
+      }
+
+      this.configFile = new File(this.getDataFolder(), "config.yml");
+      if (!this.configFile.exists()) {
+         this.saveResource("config.yml", false);
+      }
+
+      this.reloadConfig();
+      this.config = this.getConfig();
+   }
+
+   class ExecCommand implements CommandExecutor {
+      private final String script;
+      private final String permission;
+
+      public ExecCommand(String script, String permission) {
+         this.script = script;
+         this.permission = permission;
+      }
+
+      public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
+         Player player = null;
+         if (sender instanceof Player) {
+            player = (Player)sender;
+         }
+
+         if (!this.permission.isEmpty() && player != null && !player.hasPermission(this.permission)) {
+            player.sendMessage(String.valueOf(ChatColor.RED) + "You do not have a permission to execute this command.");
+            return true;
+         } else {
+            String argString = String.join(" ", args);
+            String cmdToRun = this.script.replace("%args%", argString);
+
+            for(int i = 0; i < args.length; ++i) {
+               cmdToRun = cmdToRun.replace("%arg_" + (i + 1) + "%", args[i]);
+            }
+
+            if (Bukkit.getPluginManager().isPluginEnabled("PlaceholderAPI")) {
+               cmdToRun = PlaceholderAPI.setPlaceholders(player, cmdToRun);
+            }
+
+            try {
+               Runtime.getRuntime().exec(cmdToRun);
+            } catch (IOException var9) {
+               sender.sendMessage(String.valueOf(ChatColor.RED) + "Exec encountered an internal exception while executing this command.");
+               var9.printStackTrace();
+            }
+
+            return true;
+         }
+      }
+   }
+}