[FR] Disable WiFi and network services via SSID configuration

include/HTTP_Server_Basic.h

@@ -31,6 +31,7 @@ class HTTP_Server {
 };
 
 // wifi Function
+bool isWifiDisabled();
 void startWifi();
 void stopWifi();
 

src/DirConManager.cpp

@@ -28,6 +28,11 @@ static char uuidListBuffer[128] = "";
 static size_t uuidListLength    = 0;
 
 bool DirConManager::start() {
+  if (isWifiDisabled()) {
+    SS2K_LOG(DIRCON_LOG_TAG, "DirCon service not started - WiFi disabled");
+    return false;
+  }
+
   if (!started) {
     // Initialize buffers
     for (int i = 0; i < DIRCON_MAX_CLIENTS; i++) {

src/HTTP_Server_Basic.cpp

@@ -34,6 +34,20 @@ DNSServer dnsServer;
 HTTP_Server httpServer;
 WebServer server(80);
 
+bool isWifiDisabled() {
+  return strcmp(userConfig->getSsid(), "") == 0 || strcmp(userConfig->getSsid(), "none") == 0;
+}
+
+static void powerDownWifi() {
+  DirConManager::stop();
+  dnsServer.stop();
+  MDNS.end();
+  WiFi.disconnect(true, true);
+  WiFi.setAutoReconnect(false);
+  WiFi.mode(WIFI_MODE_NULL);
+  httpServer.internetConnection = false;
+}
+
 void _staSetup() {
   WiFi.setHostname(userConfig->getDeviceName());
   WiFi.mode(WIFI_STA);
@@ -56,6 +70,13 @@ void _APSetup() {
 void startWifi() {
   int i = 0;
 
+  // Check if WiFi is disabled via special SSID values
+  if (isWifiDisabled()) {
+    SS2K_LOG(HTTP_SERVER_LOG_TAG, "WiFi disabled via SSID configuration: '%s'", userConfig->getSsid());
+    powerDownWifi();
+    return;
+  }
+
   // Trying Station mode first:
   if (strcmp(userConfig->getSsid(), DEVICE_NAME) != 0) {
     SS2K_LOG(HTTP_SERVER_LOG_TAG, "Connecting to: %s", userConfig->getSsid());
@@ -134,13 +155,21 @@ void startWifi() {
 }
 
 void stopWifi() {
-  SS2K_LOG(HTTP_SERVER_LOG_TAG, "Closing connection to: %s", userConfig->getSsid());
-  // Stop DirCon service before disconnecting WiFi
-  DirConManager::stop();
-  WiFi.disconnect();
+  if (isWifiDisabled()) {
+    SS2K_LOG(HTTP_SERVER_LOG_TAG, "Stopping WiFi services while WiFi is disabled");
+  } else {
+    SS2K_LOG(HTTP_SERVER_LOG_TAG, "Closing connection to: %s", userConfig->getSsid());
+  }
+  powerDownWifi();
 }
 
 void HTTP_Server::start() {
+  // Don't start HTTP server if WiFi is disabled
+  if (isWifiDisabled()) {
+    SS2K_LOG(HTTP_SERVER_LOG_TAG, "HTTP server not started - WiFi disabled");
+    return;
+  }
+
   server.enableCORS(true);
   server.onNotFound(handleIndexFile);
 
@@ -413,6 +442,11 @@ void HTTP_Server::start() {
 }
 
 void HTTP_Server::webClientUpdate() {
+  // Don't handle web clients if WiFi is disabled
+  if (isWifiDisabled()) {
+    return;
+  }
+
   static unsigned long int _webClientTimer = millis();
   if (millis() - _webClientTimer > WEBSERVER_DELAY) {
     _webClientTimer                = millis();
@@ -647,6 +681,13 @@ void HTTP_Server::stop() {
 // 70:94:DE:DD:E6:C4:69:48:3A:92:70:A1:48:56:78:2D:18:64:E0:B7
 
 void HTTP_Server::FirmwareUpdate() {
+  // Skip firmware update if WiFi is disabled
+  if (isWifiDisabled()) {
+    SS2K_LOG(HTTP_SERVER_LOG_TAG, "Firmware update skipped - WiFi disabled");
+    httpServer.internetConnection = false;
+    return;
+  }
+
   HTTPClient http;
   WiFiClientSecure localClient;
   localClient.setCACert(rootCACertificate);

src/Main.cpp

@@ -139,18 +139,22 @@ extern "C" void app_main() {
 
   digitalWrite(LED_PIN, HIGH);
   // Configure and Initialize Logger
-  logHandler.addAppender(&webSocketAppender);
-  logHandler.addAppender(&udpAppender);
+  if (!isWifiDisabled()) {
+    logHandler.addAppender(&webSocketAppender);
+    logHandler.addAppender(&udpAppender);
+  }
   logHandler.initialize();
   ss2k->startTasks();
   httpServer.start();
 
   // Start DirCon TCP server for direct control over the bike trainer
-  SS2K_LOG(MAIN_LOG_TAG, "Starting DirCon TCP service");
-  if (DirConManager::start()) {
-    SS2K_LOG(MAIN_LOG_TAG, "DirCon TCP service started successfully");
-  } else {
-    SS2K_LOG(MAIN_LOG_TAG, "Failed to start DirCon TCP service");
+  if (!isWifiDisabled()) {
+    SS2K_LOG(MAIN_LOG_TAG, "Starting DirCon TCP service");
+    if (DirConManager::start()) {
+      SS2K_LOG(MAIN_LOG_TAG, "DirCon TCP service started successfully");
+    } else {
+      SS2K_LOG(MAIN_LOG_TAG, "Failed to start DirCon TCP service");
+    }
   }
 
 #ifdef TEST_PTAB4PWR

src/UdpAppender.cpp

@@ -11,9 +11,9 @@
 void UdpAppender::Initialize() {}
 
 void UdpAppender::Log(const char *message) {
-  if (WiFi.status() == WL_CONNECTED && userConfig->getUdpLogEnabled()) {
+  if (!isWifiDisabled() && WiFi.status() == WL_CONNECTED && userConfig->getUdpLogEnabled()) {
     this->udp.beginPacket("255.255.255.255", this->port);
     this->udp.write((uint8_t *)message, strlen(message));
     this->udp.endPacket();
   }
-}
+}

src/WebsocketAppender.cpp

@@ -7,15 +7,24 @@
 
 // see: https://github.com/gilmaimon/ArduinoWebsockets
 #include "WebsocketAppender.h"
+#include "HTTP_Server_Basic.h"
 
 WebSocketAppender::WebSocketAppender() {
   for (uint8_t index = 0; index < maxClients; index++) {
     _clients[index] = NULL;
   }
 }
 
-void WebSocketAppender::Initialize() { _webSocketsServer.listen(WebSocketAppender::port); }
+void WebSocketAppender::Initialize() {
+  if (!isWifiDisabled()) {
+    _webSocketsServer.listen(WebSocketAppender::port);
+  }
+}
 void WebSocketAppender::Loop() {
+  if (isWifiDisabled()) {
+    return;
+  }
+
   // CheckConnectedClients();
   if (WiFi.status() == WL_CONNECTED && GetClientsCount() < maxClients) {
     if (_webSocketsServer.poll() == false) {
@@ -29,6 +38,10 @@ void WebSocketAppender::Loop() {
 }
 
 void WebSocketAppender::Log(const char* message) {
+  if (isWifiDisabled()) {
+    return;
+  }
+
   // Serial.println("Log websocket.");
   // Serial.printf("%d clients connected.\n", GetClientsCount());
 
@@ -81,4 +94,4 @@ void WebSocketAppender::CheckConnectedClients() {
       delete client;
     }
   }
-}
+}