Setup the server code in the configuration

app/assets/js/configmanager.js

@@ -39,6 +39,24 @@ exports.setDataDirectory = function(dataDirectory){
     config.settings.launcher.dataDirectory = dataDirectory
 }
 
+/**
+ * Get the launcher's server code if set. This will be used to load hidden servers.
+ *
+ * @returns {string} The server code that has been put into the launcher
+ */
+exports.getServerCode = function(def = false){
+    return !def ? config.settings.launcher.serverCode : DEFAULT_CONFIG.settings.launcher.serverCode
+}
+
+/**
+ * Set the new server code
+ *
+ * @param {string} serverCode The new server code.
+ */
+exports.setServerCode = function(serverCode){
+    config.settings.launcher.serverCode = serverCode
+}
+
 const configPath = path.join(exports.getLauncherDirectory(), 'config.json')
 const configPathLEGACY = path.join(dataPath, 'config.json')
 const firstLaunch = !fs.existsSync(configPath) && !fs.existsSync(configPathLEGACY)
@@ -91,7 +109,8 @@ const DEFAULT_CONFIG = {
         },
         launcher: {
             allowPrerelease: false,
-            dataDirectory: dataPath
+            dataDirectory: dataPath,
+            serverCode: null
         }
     },
     newsCache: {

app/assets/js/scripts/settings.js

@@ -136,6 +136,8 @@ function initSettingsValues(){
                         v.value = gFn()
                     } else if (cVal === 'DataDirectory'){
                         v.value = gFn()
+                    } else if (cVal === 'ServerCode'){
+                        v.value = gFn()
                     } else if(cVal === 'JVMOptions'){
                         v.value = gFn().join(' ')
                     } else {

app/settings.ejs

@@ -270,7 +270,7 @@
                 <div class="settingsServerCodeTitle">Server Code</div>
                 <div class="settingsServerCodeContent">
                     <div class="settingsServerCodeActions">
-                        <input class="settingsServerCodeVal" id="settingsJavaExecVal" type="text" value="" cValue="ServerCode">
+                        <input class="settingsServerCodeVal" type="text" value="" cValue="ServerCode">
                     </div>
                 </div>
                 <div class="settingsServerCodeDesc">Any server code here (if valid) will grant you access to certain modpacks or servers that are set up to use the code.</div>