1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171

use std::rc::Rc;

use actix_utils::future::{ready, Ready};
use actix_web::{
    body::{EitherBody, MessageBody},
    dev::{Service, ServiceRequest, ServiceResponse, Transform},
    Error, HttpMessage, Result,
};
use futures_util::future::{FutureExt as _, LocalBoxFuture};

use crate::{identity::IdentityItem, IdentityPolicy};

/// Request identity middleware
///
/// ```
/// use actix_web::App;
/// use actix_identity::{CookieIdentityPolicy, IdentityService};
///
/// // create cookie identity backend
/// let policy = CookieIdentityPolicy::new(&[0; 32])
///            .name("auth-cookie")
///            .secure(false);
///
/// let app = App::new()
///     // wrap policy into identity middleware
///     .wrap(IdentityService::new(policy));
/// ```
pub struct IdentityService<T> {
    backend: Rc<T>,
}

impl<T> IdentityService<T> {
    /// Create new identity service with specified backend.
    pub fn new(backend: T) -> Self {
        IdentityService {
            backend: Rc::new(backend),
        }
    }
}

impl<S, T, B> Transform<S, ServiceRequest> for IdentityService<T>
where
    S: Service<ServiceRequest, Response = ServiceResponse<B>, Error = Error> + 'static,
    S::Future: 'static,
    T: IdentityPolicy,
    B: MessageBody + 'static,
{
    type Response = ServiceResponse<EitherBody<B>>;
    type Error = Error;
    type InitError = ();
    type Transform = IdentityServiceMiddleware<S, T>;
    type Future = Ready<Result<Self::Transform, Self::InitError>>;

    fn new_transform(&self, service: S) -> Self::Future {
        ready(Ok(IdentityServiceMiddleware {
            backend: self.backend.clone(),
            service: Rc::new(service),
        }))
    }
}

pub struct IdentityServiceMiddleware<S, T> {
    pub(crate) service: Rc<S>,
    pub(crate) backend: Rc<T>,
}

impl<S, T> Clone for IdentityServiceMiddleware<S, T> {
    fn clone(&self) -> Self {
        Self {
            backend: Rc::clone(&self.backend),
            service: Rc::clone(&self.service),
        }
    }
}

impl<S, T, B> Service<ServiceRequest> for IdentityServiceMiddleware<S, T>
where
    S: Service<ServiceRequest, Response = ServiceResponse<B>, Error = Error> + 'static,
    S::Future: 'static,
    T: IdentityPolicy,
    B: MessageBody + 'static,
{
    type Response = ServiceResponse<EitherBody<B>>;
    type Error = Error;
    type Future = LocalBoxFuture<'static, Result<Self::Response, Self::Error>>;

    actix_service::forward_ready!(service);

    fn call(&self, mut req: ServiceRequest) -> Self::Future {
        let srv = Rc::clone(&self.service);
        let backend = Rc::clone(&self.backend);
        let fut = self.backend.from_request(&mut req);

        async move {
            match fut.await {
                Ok(id) => {
                    req.extensions_mut()
                        .insert(IdentityItem { id, changed: false });

                    let mut res = srv.call(req).await?;
                    let id = res.request().extensions_mut().remove::<IdentityItem>();

                    if let Some(id) = id {
                        match backend.to_response(id.id, id.changed, &mut res).await {
                            Ok(_) => Ok(res.map_into_left_body()),
                            Err(err) => Ok(res.error_response(err).map_into_right_body()),
                        }
                    } else {
                        Ok(res.map_into_left_body())
                    }
                }
                Err(err) => Ok(req.error_response(err).map_into_right_body()),
            }
        }
        .boxed_local()
    }
}

#[cfg(test)]
mod tests {
    use std::{rc::Rc, time::Duration};

    use actix_service::into_service;
    use actix_web::{dev, error, test, Error, Result};

    use super::*;

    #[actix_web::test]
    async fn test_borrowed_mut_error() {
        use actix_utils::future::{ok, Ready};
        use futures_util::future::lazy;

        struct Ident;
        impl IdentityPolicy for Ident {
            type Future = Ready<Result<Option<String>, Error>>;
            type ResponseFuture = Ready<Result<(), Error>>;

            fn from_request(&self, _: &mut dev::ServiceRequest) -> Self::Future {
                ok(Some("test".to_string()))
            }

            fn to_response<B>(
                &self,
                _: Option<String>,
                _: bool,
                _: &mut dev::ServiceResponse<B>,
            ) -> Self::ResponseFuture {
                ok(())
            }
        }

        let srv = crate::middleware::IdentityServiceMiddleware {
            backend: Rc::new(Ident),
            service: Rc::new(into_service(|_: dev::ServiceRequest| async move {
                actix_web::rt::time::sleep(Duration::from_secs(100)).await;
                Err::<dev::ServiceResponse, _>(error::ErrorBadRequest("error"))
            })),
        };

        let srv2 = srv.clone();
        let req = test::TestRequest::default().to_srv_request();

        actix_web::rt::spawn(async move {
            let _ = srv2.call(req).await;
        });

        actix_web::rt::time::sleep(Duration::from_millis(50)).await;

        let _ = lazy(|cx| srv.poll_ready(cx)).await;
    }
}