Hi,
I want to build a website running on an OpenWRT Client that POSTs a JSON-String to a backend on the server.
This backend should read the JSON-String, run c-code with the parameters from the JSON and return the result of the c-code via JSON-String to the webpage.

|   WEBPAGE        |        BACKEND        |        c-PROGRAMM

(1) post JSOn -> (2) parse and call --> (3) run and return
                                                                         |
                             (4) parse to JSON         <---
                                              |
   (5) receive JSON         <---

I can see that Luci is working with JSON-Strings, perhaps I could use something of that.

Can anyone please help me how I could realize that?