Tower middleware to sanitize paths.
Any sort of path traversal techniques
used to access the underlying filesystem will be removed from the request's paths. For example, a request with /../../passwd
will become /passwd before being passed to inner services.
use http::{Request, Response, StatusCode};
use hyper::Body;
use std::{iter::once, convert::Infallible};
use tower::{ServiceBuilder, Service, ServiceExt};
use tower_sanitize_path::SanitizePathLayer;
# #[tokio::main]
# async fn main() -> Result<(), Box<dyn std::error::Error>> {
async fn handle(req: Request<Body>) -> Result<Response<Body>, Infallible> {
// `req.uri().path()` will not be usable to traverse the filesystem
# Ok(Response::new(Body::empty()))
}
let mut service = ServiceBuilder::new()
// sanitize the paths
.layer(SanitizePathLayer)
.service_fn(handle);
// call the service
let request = Request::builder()
// `handle` will see `/secret`
.uri("/../../secret")
.body(Body::empty())?;
service.ready().await?.call(request).await?;
#
# Ok(())
# }