[Replacement for 2493] EUS: Save the post data in a file on the filesystem

app/modules/enduser_setup.c

@@ -755,12 +755,20 @@ static int enduser_setup_write_file_with_extra_configuration_data(char *form_bod
     return 1;
   }
 
-  // write all key pairs as KEY="VALUE"\n
+  // write all key pairs as KEY="VALUE"\n into a Lua table, example:
+  // local p = {}
+  // p.wifi_ssid="ssid"
+  // p.wifi_password="password"
+  // p.device_name="foo-node"
+  // return p
+  vfs_write(p_file, "local p = {}\n", 13);
   int idx = 0;
   for( idx = 0; idx < kp->keypairs_nb*2; idx=idx+2){
     char* to_write = kp->keypairs[idx];
     size_t length = c_strlen(to_write);
 
+    vfs_write(p_file, "p.", 2);
+
     vfs_write(p_file, to_write, length);
 
     vfs_write(p_file, "=\"", 2);
@@ -771,6 +779,7 @@ static int enduser_setup_write_file_with_extra_configuration_data(char *form_bod
 
     vfs_write(p_file, "\"\n", 2);
   }
+  vfs_write(p_file, "return p\n", 9);
 
   vfs_close(p_file);
   enduser_setup_free_keypairs(kp);

docs/modules/enduser-setup.md

@@ -38,20 +38,22 @@ Then the `eus_params.lua` file will contain the following:
 
 ```lua
 -- those wifi_* are the base parameters that are saved anyway
-wifi_ssid="ssid"
-wifi_password="password"
+local p = {}
+p.wifi_ssid="ssid"
+p.wifi_password="password"
 -- your own parameters:
-timeout_delay="xxx"
-device_name="yyy"
+p.timeout_delay="xxx"
+p.device_name="yyy"
+return p
 ```
 
 ### How to use the eus_params.lua file
 
 Simply include the file by using the `dofile` function:
 ```lua
-dofile('eus_params.lua')
--- now use the parameters as a global var
-print("Wifi device_name: " .. device_name)
+p = dofile('eus_params.lua')
+-- now use the parameters in the Lua table
+print("Wifi device_name: " .. p.device_name)
 ```
 
 ### HTTP endpoints: