RCON Support (#96)

* Added RCON dotnet submodule

* RCON Manager

* RCON works

* Switched inter-thread passing from tasks callbacks to BlockingCollection

* Cleanup

* Config based rcon port and password

* RCON is disabled by default in config

* Added SanAndreasUnity.RCON namespace to CommandInterpreter

* Pass command to main thread first and report progress afterwards

* Minor cleanup

* Removed InvalidOperationException as it was never possible

* Moved OnLoaderFinished code in RCONManager

* Added RCONManager script to prefab

* Added meta files

.gitmodules

@@ -4,3 +4,6 @@
 [submodule "Assets/UnityStandardAssets"]
 	path = Assets/UnityStandardAssets
 	url = https://github.com/GTA-ASM/UnityStandardAssets
+[submodule "Assets/RCONdotnet"]
+	path = Assets/RCONdotnet
+	url = https://github.com/undbsd/rcon-dotnet

Assets/Prefabs/GameManager.prefab

@@ -24,6 +24,7 @@ GameObject:
   - component: {fileID: 1318502437576191535}
   - component: {fileID: 7442340376164908290}
   - component: {fileID: 8446601354455743255}
+  - component: {fileID: 5853763562556677784}
   m_Layer: 0
   m_Name: GameManager
   m_TagString: Untagged
@@ -299,3 +300,15 @@ MonoBehaviour:
     type: 3}
   messagesContainer: {fileID: 0}
   messagePoolSize: 10
+--- !u!114 &5853763562556677784
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1297494511425690}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: c77317cdc437f244b8d409c229aa2e95, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 

Assets/RCONdotnet

@@ -0,0 +1 @@
+Subproject commit b5e93d94fd0a3b46dd19e3d62cf427f72f58ed40

Assets/RCONdotnet.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: be08b0c2aac61f94f8676008c1f1a546
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Resources/config.json

@@ -10,7 +10,7 @@
   "sv_max_connections": 32,
   "sv_port": 14242,
 
-  "game_dir" : "",
+  "game_dir": "",
 
   "archive_paths": [
     "${game_dir}/models/gta3.img",
@@ -35,10 +35,13 @@
   "water_path": "${game_dir}/data/water.dat",
   "car_colors_path": "${game_dir}/data/carcols.dat",
   "anim_groups_paths": [
-    "${game_dir}/data/animgrp.dat",
+    "${game_dir}/data/animgrp.dat"
   ],
   "weapons_path": "${game_dir}/data/weapon.dat",
 
   "dontLoadTextures": false,
-  
+
+  "RCON_enabled": false,
+  "RCON_password": "super_secret_password",
+  "RCON_port": 25575
 }

Assets/Scripts/RCON.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 381eb0e589457424db93a1587f86f9eb
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/RCON/CommandInterpreter.cs

@@ -0,0 +1,36 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace SanAndreasUnity.RCON
+{
+    public class CommandInterpreter
+    {
+        public static String Interpret(String command)
+        {
+            string[] words = command.Split(' ');
+
+            if (command == "heartbeat")
+            {
+                // Implement heartbeat ping
+                return "Heartbeat was sent to master server";
+            }
+
+            if (command == "help")
+            {
+                return "The available commands for now are heartbeat, announce and help";
+            }
+
+            if (words[0] == "announce")
+            {
+                String announcement = String.Join(" ", words, 1, words.Length - 1);
+                SanAndreasUnity.Chat.ChatManager.SendChatMessageToAllPlayersAsServer(announcement);
+                return "Server : " + announcement;
+            }
+
+            return "Unknown command";
+        }
+    }
+
+}

Assets/Scripts/RCON/CommandInterpreter.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 9cf8ca8374941dd4aaa862202a1a2b7b
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/RCON/RCONManager.cs

@@ -0,0 +1,100 @@
+using Rcon;
+using Rcon.Events;
+using SanAndreasUnity.Net;
+using SanAndreasUnity.Utilities;
+using System;
+using System.Collections.Concurrent;
+using System.ComponentModel;
+using System.Threading.Tasks;
+using UnityEngine;
+
+namespace SanAndreasUnity.RCON
+{
+    public class RCONManager : MonoBehaviour
+    {
+        // Todo : set these from config
+        private static String password;
+        private static int portNumber;
+
+        // Objects used to pass commands and responses between threads
+        private static BlockingCollection<String> mainToSec = new BlockingCollection<String>(1);
+        private static BlockingCollection<String> secToMain = new BlockingCollection<String>(1);
+
+        private static BackgroundWorker workerInstance = null;
+
+        public static void StartServer()
+        {
+            password = Config.Get<string>("RCON_password");
+            portNumber = Config.Get<int>("RCON_port");
+
+            if (workerInstance != null)
+                return;
+
+            workerInstance = new BackgroundWorker();
+
+            workerInstance.DoWork += new DoWorkEventHandler( worker_doWork );
+            workerInstance.ProgressChanged += new ProgressChangedEventHandler( worker_progressChanged );
+            workerInstance.WorkerReportsProgress = true;
+            // workerInstance.WorkerSupportsCancellation = true;
+
+            workerInstance.RunWorkerAsync(); // Call the background worker
+        }
+
+        #region Code that runs in the RCON Server Thread
+        private static void worker_doWork(object sender, DoWorkEventArgs e)
+        {
+            using (RconServer server = new RconServer(password, portNumber))
+            {
+                server.OnClientCommandReceived += Server_OnClientCommandReceived;
+                server.OnClientConnected += Server_OnClientConnected;
+                server.OnClientAuthenticated += Server_OnClientAuthenticated;
+                server.OnClientDisconnected += Server_OnClientDisconnected;
+                server.Start();
+            }
+        }
+        static void Server_OnClientAuthenticated(object sender, ClientAuthenticatedEventArgs e)
+        {
+            // Console.WriteLine("{0} authenticated", e.Client.Client.LocalEndPoint);
+        }
+        static void Server_OnClientDisconnected(object sender, ClientDisconnectedEventArgs e)
+        {
+            // Console.WriteLine("{0} disconnected", e.EndPoint);
+        }
+        static void Server_OnClientConnected(object sender, ClientConnectedEventArgs e)
+        {
+            // Console.WriteLine("{0} connected", e.Client.Client.LocalEndPoint);
+        }
+        static string Server_OnClientCommandReceived(object sender, ClientSentCommandEventArgs e)
+        {
+            secToMain.Add(e.Command); // Pass the command to the main thread
+
+            workerInstance.ReportProgress(0); //Report our progress to the main thread
+
+            String commandResult = "Command didn't process correctly"; // default value
+
+            commandResult = mainToSec.Take();
+
+            return commandResult;
+        }
+        #endregion
+
+        // Runs in main thread
+        private static void worker_progressChanged(object sender, ProgressChangedEventArgs e)
+        {
+            String command = "unknown";
+
+            command = secToMain.Take();
+
+            mainToSec.Add(CommandInterpreter.Interpret(command));
+        }
+
+        void OnLoaderFinished()
+        {
+            if (NetStatus.IsServer)
+            {
+                if (Config.Get<bool>("RCON_enabled"))
+                    StartServer();
+            }
+        }
+    }
+}

Assets/Scripts/RCON/RCONManager.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: c77317cdc437f244b8d409c229aa2e95
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: