ulfius_add_endpoint_by_val for files in folder

[nicolasb565]

Hi,

I am wondering if there is a way to use ulfius_add_endpoint_by_val for all files inside a folder. For example this would be useful for assets like jpeg files. Can we use wildcard or regex?

Thanks!

[babelouest]

Hi @nicolasb565 ,

Unfortunately, ulfius_add_endpoint_by_val doesn't work with files in a folder, it requires a callback that will execute the code.

Also, you can't pass a regexp in the url_format parameter, but the * parameter is allowed as mentioned in the documentation:

on an url_format that ends with '*', the rest of the url will not be tested

If you must use ulfius to provide static files, instead of using an apache or NGINX server instead, you can create a callback function that will behave like a static file reader though.
For that, you can use inspiration from the example callback folder, like the simple static file or the static file compressed output callbacks.

Be careful, they may be overkill as is if your needs are more simple than that.

In your case, a simple endpoint could start like this:

ulfius_add_endpoint_by_val(&instance, "GET", "file", "*", 0, &callback_file, NULL);

int callback_file (const struct _u_request * request, struct _u_response * response, void * user_data) {
  char path[1025] = {0}, ;
  strcpy(path, "/path/to/directory/");
  strcat(path, request->http_url, 1024-strlen("/path/to/directory/"));

  FILE * f = fopen (path, "rb"); // be careful to check for directory traversal bugs
  //...
}