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use crate::cookies::CookieData;
use futures::future::BoxFuture;
use http::header::HeaderValue;
use crate::{
middleware::{Middleware, Next},
Context, Response,
};
#[derive(Clone, Default, Debug)]
pub struct CookiesMiddleware {}
impl CookiesMiddleware {
pub fn new() -> Self {
Self {}
}
}
impl<Data: Send + Sync + 'static> Middleware<Data> for CookiesMiddleware {
fn handle<'a>(
&'a self,
mut cx: Context<Data>,
next: Next<'a, Data>,
) -> BoxFuture<'a, Response> {
box_async! {
let cookie_data = cx
.extensions_mut()
.remove()
.unwrap_or_else(|| CookieData::from_headers(cx.headers()));
let cookie_jar = cookie_data.content.clone();
cx.extensions_mut().insert(cookie_data);
let mut res = next.run(cx).await;
let headers = res.headers_mut();
for cookie in cookie_jar.read().unwrap().delta() {
let hv = HeaderValue::from_str(cookie.encoded().to_string().as_str());
if let Ok(val) = hv {
headers.append(http::header::SET_COOKIE, val);
} else {
return http::Response::builder()
.status(http::status::StatusCode::INTERNAL_SERVER_ERROR)
.header("Content-Type", "text/plain; charset=utf-8")
.body(http_service::Body::empty())
.unwrap();
}
}
res
}
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::{cookies::ContextExt, Context};
use cookie::Cookie;
use futures::executor::block_on;
use http_service::Body;
use http_service_mock::make_server;
static COOKIE_NAME: &str = "testCookie";
#[allow(unused_mut)]
async fn retrieve_cookie(mut cx: Context<()>) -> String {
format!("{}", cx.get_cookie(COOKIE_NAME).unwrap().unwrap().value())
}
#[allow(unused_mut)]
async fn set_cookie(mut cx: Context<()>) {
cx.set_cookie(Cookie::new(COOKIE_NAME, "NewCookieValue"))
.unwrap();
}
#[allow(unused_mut)]
async fn remove_cookie(mut cx: Context<()>) {
cx.remove_cookie(Cookie::named(COOKIE_NAME)).unwrap();
}
#[allow(unused_mut)]
async fn set_multiple_cookie(mut cx: Context<()>) {
cx.set_cookie(Cookie::new("C1", "V1")).unwrap();
cx.set_cookie(Cookie::new("C2", "V2")).unwrap();
}
fn app() -> crate::App<()> {
let mut app = crate::App::new();
app.middleware(CookiesMiddleware::new());
app.at("/get").get(retrieve_cookie);
app.at("/set").get(set_cookie);
app.at("/remove").get(remove_cookie);
app.at("/multi").get(set_multiple_cookie);
app
}
fn make_request(endpoint: &str) -> Response {
let app = app();
let mut server = make_server(app.into_http_service()).unwrap();
let req = http::Request::get(endpoint)
.header(http::header::COOKIE, "testCookie=RequestCookieValue")
.body(Body::empty())
.unwrap();
let res = server.simulate(req).unwrap();
res
}
#[test]
fn successfully_retrieve_request_cookie() {
let res = make_request("/get");
assert_eq!(res.status(), 200);
let body = block_on(res.into_body().into_vec()).unwrap();
assert_eq!(&*body, &*b"RequestCookieValue");
}
#[test]
fn successfully_set_cookie() {
let res = make_request("/set");
assert_eq!(res.status(), 200);
let test_cookie_header = res.headers().get(http::header::SET_COOKIE).unwrap();
assert_eq!(
test_cookie_header.to_str().unwrap(),
"testCookie=NewCookieValue"
);
}
#[test]
fn successfully_remove_cookie() {
let res = make_request("/remove");
assert_eq!(res.status(), 200);
let test_cookie_header = res.headers().get(http::header::SET_COOKIE).unwrap();
assert!(test_cookie_header
.to_str()
.unwrap()
.starts_with("testCookie=;"));
let cookie = Cookie::parse_encoded(test_cookie_header.to_str().unwrap()).unwrap();
assert_eq!(cookie.name(), COOKIE_NAME);
assert_eq!(cookie.value(), "");
assert_eq!(cookie.http_only(), None);
assert_eq!(cookie.max_age().unwrap().num_nanoseconds(), Some(0));
}
#[test]
fn successfully_set_multiple_cookies() {
let res = make_request("/multi");
assert_eq!(res.status(), 200);
let cookie_header = res.headers().get_all(http::header::SET_COOKIE);
let mut iter = cookie_header.iter();
let cookie1 = iter.next().unwrap();
let cookie2 = iter.next().unwrap();
if cookie1.to_str().unwrap().starts_with("C1") {
assert_eq!(cookie1, "C1=V1");
assert_eq!(cookie2, "C2=V2");
} else {
assert_eq!(cookie2, "C1=V1");
assert_eq!(cookie1, "C2=V2");
}
assert!(iter.next().is_none());
}
}