Catch wrong datatype on POST to REST-API (/api/ctrl)

src/web/RestApi.h

@@ -63,6 +63,7 @@ class RestApi {
         void ctrlRequest(JsonObject obj) {
             DynamicJsonDocument json(128);
             JsonObject dummy = json.as<JsonObject>();
+
                 if(obj[F("path")] == "ctrl")
                     setCtrl(obj, dummy, "*");
                 else if(obj[F("path")] == "setup")
@@ -155,12 +156,14 @@ class RestApi {
             DynamicJsonDocument json(1000);
 
             DeserializationError err = deserializeJson(json, reinterpret_cast<const char*>(mTmpBuf), mTmpSize);
-            JsonObject obj = json.as<JsonObject>();
-
             AsyncJsonResponse* response = new AsyncJsonResponse(false, 200);
             JsonObject root = response->getRoot();
+            if (json.is<JsonObject>()) {
+                JsonObject obj = json.as<JsonObject>();
+
+
                 root[F("success")] = (err) ? false : true;
-            if(!err) {
+
                     String path = request->url().substring(5);
                     if(path == "ctrl")
                         root[F("success")] = setCtrl(obj, root, request->client()->remoteIP().toString().c_str());
@@ -170,16 +173,18 @@ class RestApi {
                         root[F("success")] = false;
                         root[F("error")]   = F(PATH_NOT_FOUND) + path;
                     }
+
             } else {
+
                 switch (err.code()) {
-                    case DeserializationError::Ok: break;
+                    case DeserializationError::Ok: root[F("error")] = F(INVALID_DATATYPE); break;
                     case DeserializationError::IncompleteInput: root[F("error")] = F(INCOMPLETE_INPUT); break;
                     case DeserializationError::InvalidInput:    root[F("error")] = F(INVALID_INPUT);    break;
                     case DeserializationError::NoMemory:        root[F("error")] = F(NOT_ENOUGH_MEM);   break;
                     default:                                    root[F("error")] = F(DESER_FAILED);     break;
                 }
-            }
 
+            }
             response->setLength();
             request->send(response);
             delete[] mTmpBuf;

src/web/lang.h

@@ -42,6 +42,12 @@
     #define INVALID_INPUT "Invalid input"
 #endif
 
+#ifdef LANG_DE
+    #define INVALID_DATATYPE "Ungültiger Datentyp"
+#else /*LANG_EN*/
+    #define INVALID_DATATYPE "Invalid datatype"
+#endif
+
 #ifdef LANG_DE
     #define NOT_ENOUGH_MEM "nicht genügend Speicher"
 #else /*LANG_EN*/