volga 0.9.1

Easy & Fast Web Framework for Rust
Documentation 
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//! HTTP to HTTPS redirection middleware

use crate::{HttpBody, error::Error, status};
use futures_util::future::BoxFuture;

use hyper::{
    Request, Response, Uri, body::Incoming, header::HOST, http::uri::Scheme, service::Service,
};

#[cfg(debug_assertions)]
use crate::temp_redirect;

#[cfg(not(debug_assertions))]
use crate::permanent_redirect;

/// Represents a middleware that redirects all HTTP requests to HTTPS
pub(super) struct HttpsRedirectionMiddleware {
    https_port: u16,
}

impl HttpsRedirectionMiddleware {
    pub(super) fn new(https_port: u16) -> Self {
        Self { https_port }
    }
}

impl Service<Request<Incoming>> for HttpsRedirectionMiddleware {
    type Response = Response<HttpBody>;
    type Error = Error;
    type Future = BoxFuture<'static, Result<Self::Response, Self::Error>>;

    #[inline]
    fn call(&self, request: Request<Incoming>) -> Self::Future {
        let https_port = self.https_port;
        Box::pin(async move {
            let (parts, _) = request.into_parts();
            let mut uri_parts = parts.uri.into_parts();

            uri_parts.scheme = Some(Scheme::HTTPS);
            if uri_parts.path_and_query.is_none() {
                uri_parts.path_and_query = Some("/".parse().unwrap());
            }

            if let Some(host) = parts.headers.get(&HOST).and_then(|host| host.to_str().ok()) {
                let (host, _) = host.rsplit_once(':').unwrap_or((host, ""));

                uri_parts.authority = Some(
                    format!("{host}:{https_port}")
                        .parse()
                        .map_err(HttpsRedirectionError::invalid_uri)?,
                );

                let uri =
                    Uri::from_parts(uri_parts).map_err(HttpsRedirectionError::invalid_uri_parts)?;

                // Link caching can cause unstable behavior in development environments.
                // So use temporary redirects rather than permanent redirects for debug mode
                #[cfg(debug_assertions)]
                let response = temp_redirect!(uri.to_string());
                #[cfg(not(debug_assertions))]
                let response = permanent_redirect!(uri.to_string());

                response.map(Into::into)
            } else {
                status!(404).map(Into::into)
            }
        })
    }
}

struct HttpsRedirectionError;

impl HttpsRedirectionError {
    #[inline]
    fn invalid_uri(error: hyper::http::uri::InvalidUri) -> Error {
        Error::server_error(error)
    }

    #[inline]
    fn invalid_uri_parts(error: hyper::http::uri::InvalidUriParts) -> Error {
        Error::server_error(error)
    }
}