changes for soft ap + captive portal

src/graphics/Screen.cpp

@@ -852,16 +852,22 @@ void DebugInfo::drawFrameWiFi(OLEDDisplay *display, OLEDDisplayUiState *state, i
     // The coordinates define the left starting point of the text
     display->setTextAlignment(TEXT_ALIGN_LEFT);
 
-    if ( WiFi.status() !=  WL_CONNECTED ) {
+    if (radioConfig.preferences.wifi_ap_mode) {
+        display->drawString(x, y, String("WiFi - Software AP"));
+    } else if ( WiFi.status() !=  WL_CONNECTED ) {
         display->drawString(x, y, String("WiFi - Not Connected"));
     } else {
         display->drawString(x, y, String("WiFi - Connected"));
     }
 
-    display->drawString(x, y + FONT_HEIGHT * 1, WiFi.localIP().toString().c_str());
+    if (radioConfig.preferences.wifi_ap_mode) {
+        display->drawString(x, y + FONT_HEIGHT * 1, "IP " + String(WiFi.softAPIP().toString().c_str()));
+    } else {
+        display->drawString(x, y + FONT_HEIGHT * 1, "IP " + String(WiFi.localIP().toString().c_str()));
+    }
 
-    display->drawString(x, y + FONT_HEIGHT * 2, wifiName);
-    display->drawString(x, y + FONT_HEIGHT * 3, wifiPsw);
+    display->drawString(x, y + FONT_HEIGHT * 2, "SSID " + String(wifiName));
+    display->drawString(x, y + FONT_HEIGHT * 3, "PWD  " + String(wifiPsw));
  
     /* Display a heartbeat pixel that blinks every time the frame is redrawn */
 #ifdef SHOW_REDRAWS

src/main.cpp

@@ -423,6 +423,7 @@ void loop()
 
     // TODO: This should go into a thread handled by FreeRTOS.
     handleWebResponse();
+    handleDNSResponse();
 
     delay(msecstosleep);
 }

src/meshwifi/meshhttp.cpp

@@ -25,6 +25,7 @@ void initWebServer() {
     webserver.onNotFound(handleNotFound);
     //webserver.on("/", handleJSONChatHistory);
     //webserver.on("/json/chat/history", handleJSONChatHistory);
+    webserver.on("/hotspot-detect.html", handleHotspot);
     webserver.on("/", []() {
     webserver.send(200, "text/plain", "Everything is awesome!");
     });
@@ -69,13 +70,24 @@ void handleNotFound() {
     for (uint8_t i = 0; i < webserver.args(); i++) {
         message += " " + webserver.argName(i) + ": " + webserver.arg(i) + "\n";
     }
-
+    Serial.println(message);
     webserver.send(404, "text/plain", message);
     /*
     */
 }
 
+/*
+    This supports the Apple Captive Network Assistant (CNA) Portal
+*/
+void handleHotspot() {
+    DEBUG_MSG("Hotspot Request\n");
 
+    String out = "";
+    //out += "Success\n";
+    out += "<meta http-equiv=\"refresh\" content=\"0;url=http://meshtastic.org/\" />\n";
+    webserver.send ( 200, "text/html", out );
+    return;
+}
 
 void notifyWebUI() {
     DEBUG_MSG("************ Got a message! ************\n");

src/meshwifi/meshhttp.h

@@ -14,3 +14,4 @@ void handleJSONChatHistory();
 
 void notifyWebUI();
 
+void handleHotspot();

src/meshwifi/meshwifi.cpp

@@ -1,10 +1,13 @@
 #include "meshwifi.h"
 #include <WiFi.h>
+#include <DNSServer.h>
 #include "configuration.h"
 #include "main.h"
 #include "NodeDB.h"
 #include "meshwifi/meshhttp.h"
 
+DNSServer dnsServer;
+
 bool isWifiAvailable() 
 {
     const char *wifiName = radioConfig.preferences.wifi_ssid;
@@ -45,21 +48,39 @@ void initWifi()
         return;
     }
 
-    //strcpy(radioConfig.preferences.wifi_ssid, WiFi_SSID_NAME);
-    //strcpy(radioConfig.preferences.wifi_password, WiFi_SSID_PASSWORD);
     if (radioConfig.has_preferences) {
         const char *wifiName = radioConfig.preferences.wifi_ssid;
+        const char *wifiPsw = radioConfig.preferences.wifi_password;
 
-        if (*wifiName) {
-            const char *wifiPsw = radioConfig.preferences.wifi_password;
+        if (1) {
+            radioConfig.preferences.wifi_ap_mode = 1;
+            strcpy(radioConfig.preferences.wifi_ssid, "MeshTest2");
+            strcpy(radioConfig.preferences.wifi_password, "12345678");
+        } else {
+            radioConfig.preferences.wifi_ap_mode = 0;
+            strcpy(radioConfig.preferences.wifi_ssid, "meshtastic");
+            strcpy(radioConfig.preferences.wifi_password, "meshtastic!");
+        }
+
+
+        if (*wifiName && *wifiPsw) {
             if (radioConfig.preferences.wifi_ap_mode) {
+            
+                IPAddress apIP(192, 168, 42, 1);
+                WiFi.onEvent(WiFiEvent);
+
+                WiFi.softAPConfig(apIP, apIP, IPAddress(255, 255, 255, 0));
                 DEBUG_MSG("STARTING WIFI AP: ssid=%s, ok=%d\n", wifiName, WiFi.softAP(wifiName, wifiPsw));
+                DEBUG_MSG("MY IP ADDRESS: %s\n", WiFi.softAPIP().toString().c_str());
+
+                dnsServer.start(53, "*", apIP);
+
+
             } else {
                 WiFi.mode(WIFI_MODE_STA);
                 WiFi.onEvent(WiFiEvent);
                 //esp_wifi_set_ps(WIFI_PS_NONE); // Disable power saving
 
-
                 DEBUG_MSG("JOINING WIFI: ssid=%s\n", wifiName);
                 if (WiFi.begin(wifiName, wifiPsw) == WL_CONNECTED) {
                     DEBUG_MSG("MY IP ADDRESS: %s\n", WiFi.localIP().toString().c_str());
@@ -127,6 +148,11 @@ void WiFiEvent(WiFiEvent_t event)
             break;
         case SYSTEM_EVENT_AP_START:
             DEBUG_MSG("WiFi access point started\n");
+            Serial.println(WiFi.softAPIP());
+
+            // Start web server
+            initWebServer();
+            
             break;
         case SYSTEM_EVENT_AP_STOP:
             DEBUG_MSG("WiFi access point stopped\n");
@@ -163,4 +189,10 @@ void WiFiEvent(WiFiEvent_t event)
             break;
         default: break;
     }
+}
+
+void handleDNSResponse() {
+    if (radioConfig.preferences.wifi_ap_mode) {
+        dnsServer.processNextRequest();
+    }
 }

src/meshwifi/meshwifi.h

@@ -3,6 +3,7 @@
 #include <Arduino.h>
 #include <functional>
 #include <WiFi.h>
+#include <DNSServer.h>
 
 void initWifi();
 
@@ -10,4 +11,6 @@ void deinitWifi();
 
 void WiFiEvent(WiFiEvent_t event);
 
-bool isWifiAvailable();
+bool isWifiAvailable();
+
+void handleDNSResponse();

src/nimble/BluetoothUtil.cpp

@@ -526,8 +526,10 @@ void setBluetoothEnable(bool on)
                 initWifi();
             }
         } else {
+            // shutdown wifi
+            deinitWifi();
+
             // We have to totally teardown our bluetooth objects to prevent leaks
-            deinitWifi(); // shutdown wifi
             deinitBLE();
 
             Serial.printf("Shutdown BT: %u heap size\n", ESP.getFreeHeap());