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use std::borrow::Cow;
use http::{header, uri::Scheme, Uri};
use crate::{web::Redirect, Endpoint, IntoResponse, Middleware, Request, Response, Result};
#[derive(Default)]
pub struct ForceHttps {
https_port: Option<u16>,
}
impl ForceHttps {
pub fn new() -> Self {
Default::default()
}
#[must_use]
pub fn https_port(self, port: u16) -> Self {
Self {
https_port: Some(port),
}
}
}
impl<E> Middleware<E> for ForceHttps
where
E: Endpoint,
{
type Output = ForceHttpsEndpoint<E>;
fn transform(&self, ep: E) -> Self::Output {
ForceHttpsEndpoint {
inner: ep,
https_port: self.https_port,
}
}
}
pub struct ForceHttpsEndpoint<E> {
inner: E,
https_port: Option<u16>,
}
#[async_trait::async_trait]
impl<E> Endpoint for ForceHttpsEndpoint<E>
where
E: Endpoint,
{
type Output = Response;
async fn call(&self, mut req: Request) -> Result<Self::Output> {
if req.scheme() == &Scheme::HTTP {
if let Some(host) = req.headers().get(header::HOST).cloned() {
if let Ok(host) = host.to_str() {
let host = redirect_host(host, self.https_port);
let uri_parts = std::mem::take(req.uri_mut()).into_parts();
let mut builder = Uri::builder().scheme(Scheme::HTTPS).authority(&*host);
if let Some(path_and_query) = uri_parts.path_and_query {
builder = builder.path_and_query(path_and_query);
}
if let Ok(uri) = builder.build() {
return Ok(Redirect::permanent(uri).into_response());
}
}
}
}
self.inner.call(req).await.map(IntoResponse::into_response)
}
}
fn redirect_host(host: &str, https_port: Option<u16>) -> Cow<'_, str> {
match (host.split_once(':'), https_port) {
(Some((host, _)), Some(port)) => Cow::Owned(format!("{}:{}", host, port)),
(None, Some(port)) => Cow::Owned(format!("{}:{}", host, port)),
(_, None) => Cow::Borrowed(host),
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_redirect_host() {
assert_eq!(redirect_host("example.com", Some(1234)), "example.com:1234");
assert_eq!(
redirect_host("example.com:5678", Some(1234)),
"example.com:1234"
);
assert_eq!(redirect_host("example.com", Some(1234)), "example.com:1234");
assert_eq!(redirect_host("example.com:1234", None), "example.com:1234");
assert_eq!(redirect_host("example.com", None), "example.com");
}
}