MQTT & OTA Fingerprint setting capitalization fix (#1952)

* MQTT Fingerprint setting capitalization fix

* otafp -> otaFP

code/espurna/mqtt.ino

@@ -102,7 +102,7 @@ SecureClientConfig _mqtt_sc_config {
         return getSetting("mqttScCheck", MQTT_SECURE_CLIENT_CHECK).toInt();
     },
     []() -> String {
-        return getSetting("mqttfp", MQTT_SSL_FINGERPRINT);
+        return getSetting("mqttFP", MQTT_SSL_FINGERPRINT);
     },
     true
 };
@@ -118,7 +118,7 @@ SecureClientConfig _mqtt_sc_config {
         return _mqtt_client_trusted_root_ca;
     },
     []() -> String {
-        return getSetting("mqttfp", MQTT_SSL_FINGERPRINT);
+        return getSetting("mqttFP", MQTT_SSL_FINGERPRINT);
     },
     []() -> uint16_t {
         return getSetting("mqttScMFLN", MQTT_SECURE_CLIENT_MFLN).toInt();

code/espurna/ota_asynctcp.ino

@@ -101,7 +101,7 @@ void _otaClientOnConnect(void *arg, AsyncClient *client) {
         int check = getSetting("otaScCheck", OTA_SECURE_CLIENT_CHECK).toInt();
         if ((check == SECURE_CLIENT_CHECK_FINGERPRINT) && (443 == _ota_url->port)) {
             uint8_t fp[20] = {0};
-            sslFingerPrintArray(getSetting("otafp", OTA_FINGERPRINT).c_str(), fp);
+            sslFingerPrintArray(getSetting("otaFP", OTA_FINGERPRINT).c_str(), fp);
             SSL * ssl = _ota_client->getSSL();
             if (ssl_match_fingerprint(ssl, fp) != SSL_OK) {
                 DEBUG_MSG_P(PSTR("[OTA] Warning: certificate fingerpint doesn't match\n"));
@@ -214,6 +214,9 @@ void _otaClientMqttCallback(unsigned int type, const char * topic, const char *
 
 void otaClientSetup() {
 
+    // Backwards compatibility
+    moveSetting("otafp", "otaFP");
+
     #if TERMINAL_SUPPORT
         _otaClientInitCommands();
     #endif

code/espurna/ota_httpupdate.ino

@@ -111,9 +111,9 @@ void _otaClientFromHttps(const String& url) {
     }
 
     if (check == SECURE_CLIENT_CHECK_FINGERPRINT) {
-        String fp_string = getSetting("otafp", OTA_FINGERPRINT);
+        String fp_string = getSetting("otaFP", OTA_FINGERPRINT);
         if (!fp_string.length()) {
-            DEBUG_MSG_P(PSTR("[OTA] Requested fingerprint auth, but 'otafp' is not set\n"));
+            DEBUG_MSG_P(PSTR("[OTA] Requested fingerprint auth, but 'otaFP' is not set\n"));
             return;
         }
 
@@ -166,7 +166,7 @@ void _otaClientFromHttps(const String& url) {
 
     String fp_string;
     if (check == SECURE_CLIENT_CHECK_FINGERPRINT) {
-        fp_string = getSetting("otafp", OTA_FINGERPRINT);
+        fp_string = getSetting("otaFP", OTA_FINGERPRINT);
         if (!fp_string.length() || !sslCheckFingerPrint(fp_string.c_str())) {
             DEBUG_MSG_P(PSTR("[OTA] Wrong fingerprint\n"));
             return;
@@ -250,6 +250,9 @@ void _otaClientMqttCallback(unsigned int type, const char * topic, const char *
 
 void otaClientSetup() {
 
+    // Backwards compatibility
+    moveSetting("otafp", "otaFP");
+
     #if TERMINAL_SUPPORT
         _otaClientInitCommands();
     #endif