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</pre></div><pre class="rust"><code><span class="kw">use </span>actix_session::Session;
<span class="kw">use </span>actix_utils::future::{ready, Ready};
<span class="kw">use </span>actix_web::{
cookie::time::OffsetDateTime,
dev::{Extensions, Payload},
http::StatusCode,
Error, FromRequest, HttpMessage, HttpRequest, HttpResponse,
};
<span class="kw">use crate</span>::{
config::LogoutBehaviour,
error::{
GetIdentityError, LoginError, LostIdentityError, MissingIdentityError, SessionExpiryError,
},
};
<span class="doccomment">/// A verified user identity. It can be used as a request extractor.
///
/// The lifecycle of a user identity is tied to the lifecycle of the underlying session. If the
/// session is destroyed (e.g. the session expired), the user identity will be forgotten, de-facto
/// forcing a user log out.
///
/// # Examples
/// ```
/// use actix_web::{
/// get, post, Responder, HttpRequest, HttpMessage, HttpResponse
/// };
/// use actix_identity::Identity;
///
/// #[get("/")]
/// async fn index(user: Option<Identity>) -> impl Responder {
/// if let Some(user) = user {
/// format!("Welcome! {}", user.id().unwrap())
/// } else {
/// "Welcome Anonymous!".to_owned()
/// }
/// }
///
/// #[post("/login")]
/// async fn login(request: HttpRequest) -> impl Responder {
/// Identity::login(&request.extensions(), "User1".into());
/// HttpResponse::Ok()
/// }
///
/// #[post("/logout")]
/// async fn logout(user: Identity) -> impl Responder {
/// user.logout();
/// HttpResponse::Ok()
/// }
/// ```
///
/// # Extractor Behaviour
/// What happens if you try to extract an `Identity` out of a request that does not have a valid
/// identity attached? The API will return a `401 UNAUTHORIZED` to the caller.
///
/// If you want to customise this behaviour, consider extracting `Option<Identity>` or
/// `Result<Identity, actix_web::Error>` instead of a bare `Identity`: you will then be fully in
/// control of the error path.
///
/// ## Examples
/// ```
/// use actix_web::{http::header::LOCATION, get, HttpResponse, Responder};
/// use actix_identity::Identity;
///
/// #[get("/")]
/// async fn index(user: Option<Identity>) -> impl Responder {
/// if let Some(user) = user {
/// HttpResponse::Ok().finish()
/// } else {
/// // Redirect to login page if unauthenticated
/// HttpResponse::TemporaryRedirect()
/// .insert_header((LOCATION, "/login"))
/// .finish()
/// }
/// }
/// ```
</span><span class="kw">pub struct </span>Identity(IdentityInner);
<span class="attr">#[derive(Clone)]
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>IdentityInner {
<span class="kw">pub</span>(<span class="kw">crate</span>) session: Session,
<span class="kw">pub</span>(<span class="kw">crate</span>) logout_behaviour: LogoutBehaviour,
<span class="kw">pub</span>(<span class="kw">crate</span>) is_login_deadline_enabled: bool,
<span class="kw">pub</span>(<span class="kw">crate</span>) is_visit_deadline_enabled: bool,
}
<span class="kw">impl </span>IdentityInner {
<span class="kw">fn </span>extract(ext: <span class="kw-2">&</span>Extensions) -> <span class="self">Self </span>{
ext.get::<<span class="self">Self</span>>()
.expect(
<span class="string">"No `IdentityInner` instance was found in the extensions attached to the \
incoming request. This usually means that `IdentityMiddleware` has not been \
registered as an application middleware via `App::wrap`. `Identity` cannot be used \
unless the identity machine is properly mounted: register `IdentityMiddleware` as \
a middleware for your application to fix this panic. If the problem persists, \
please file an issue on GitHub."</span>,
)
.to_owned()
}
<span class="doccomment">/// Retrieve the user id attached to the current session.
</span><span class="kw">fn </span>get_identity(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><String, GetIdentityError> {
<span class="self">self</span>.session
.get::<String>(ID_KEY)<span class="question-mark">?
</span>.ok_or_else(|| MissingIdentityError.into())
}
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">const </span>ID_KEY: <span class="kw-2">&</span>str = <span class="string">"actix_identity.user_id"</span>;
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">const </span>LAST_VISIT_UNIX_TIMESTAMP_KEY: <span class="kw-2">&</span>str = <span class="string">"actix_identity.last_visited_at"</span>;
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">const </span>LOGIN_UNIX_TIMESTAMP_KEY: <span class="kw-2">&</span>str = <span class="string">"actix_identity.logged_in_at"</span>;
<span class="kw">impl </span>Identity {
<span class="doccomment">/// Return the user id associated to the current session.
///
/// # Examples
/// ```
/// use actix_web::{get, Responder};
/// use actix_identity::Identity;
///
/// #[get("/")]
/// async fn index(user: Option<Identity>) -> impl Responder {
/// if let Some(user) = user {
/// format!("Welcome! {}", user.id().unwrap())
/// } else {
/// "Welcome Anonymous!".to_owned()
/// }
/// }
/// ```
</span><span class="kw">pub fn </span>id(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><String, GetIdentityError> {
<span class="self">self</span>.<span class="number">0
</span>.session
.get(ID_KEY)<span class="question-mark">?
</span>.ok_or_else(|| LostIdentityError.into())
}
<span class="doccomment">/// Attach a valid user identity to the current session.
///
/// This method should be called after you have successfully authenticated the user. After
/// `login` has been called, the user will be able to access all routes that require a valid
/// [`Identity`].
///
/// # Examples
/// ```
/// use actix_web::{post, Responder, HttpRequest, HttpMessage, HttpResponse};
/// use actix_identity::Identity;
///
/// #[post("/login")]
/// async fn login(request: HttpRequest) -> impl Responder {
/// Identity::login(&request.extensions(), "User1".into());
/// HttpResponse::Ok()
/// }
/// ```
</span><span class="kw">pub fn </span>login(ext: <span class="kw-2">&</span>Extensions, id: String) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, LoginError> {
<span class="kw">let </span>inner = IdentityInner::extract(ext);
inner.session.insert(ID_KEY, id)<span class="question-mark">?</span>;
<span class="kw">let </span>now = OffsetDateTime::now_utc().unix_timestamp();
<span class="kw">if </span>inner.is_login_deadline_enabled {
inner.session.insert(LOGIN_UNIX_TIMESTAMP_KEY, now)<span class="question-mark">?</span>;
}
<span class="kw">if </span>inner.is_visit_deadline_enabled {
inner.session.insert(LAST_VISIT_UNIX_TIMESTAMP_KEY, now)<span class="question-mark">?</span>;
}
inner.session.renew();
<span class="prelude-val">Ok</span>(<span class="self">Self</span>(inner))
}
<span class="doccomment">/// Remove the user identity from the current session.
///
/// After `logout` has been called, the user will no longer be able to access routes that
/// require a valid [`Identity`].
///
/// The behaviour on logout is determined by [`IdentityMiddlewareBuilder::logout_behaviour`].
///
/// # Examples
/// ```
/// use actix_web::{post, Responder, HttpResponse};
/// use actix_identity::Identity;
///
/// #[post("/logout")]
/// async fn logout(user: Identity) -> impl Responder {
/// user.logout();
/// HttpResponse::Ok()
/// }
/// ```
///
/// [`IdentityMiddlewareBuilder::logout_behaviour`]: crate::config::IdentityMiddlewareBuilder::logout_behaviour
</span><span class="kw">pub fn </span>logout(<span class="self">self</span>) {
<span class="kw">match </span><span class="self">self</span>.<span class="number">0</span>.logout_behaviour {
LogoutBehaviour::PurgeSession => {
<span class="self">self</span>.<span class="number">0</span>.session.purge();
}
LogoutBehaviour::DeleteIdentityKeys => {
<span class="self">self</span>.<span class="number">0</span>.session.remove(ID_KEY);
<span class="kw">if </span><span class="self">self</span>.<span class="number">0</span>.is_login_deadline_enabled {
<span class="self">self</span>.<span class="number">0</span>.session.remove(LOGIN_UNIX_TIMESTAMP_KEY);
}
<span class="kw">if </span><span class="self">self</span>.<span class="number">0</span>.is_visit_deadline_enabled {
<span class="self">self</span>.<span class="number">0</span>.session.remove(LAST_VISIT_UNIX_TIMESTAMP_KEY);
}
}
}
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>extract(ext: <span class="kw-2">&</span>Extensions) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, GetIdentityError> {
<span class="kw">let </span>inner = IdentityInner::extract(ext);
inner.get_identity()<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(<span class="self">Self</span>(inner))
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>logged_at(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><OffsetDateTime>, GetIdentityError> {
<span class="prelude-val">Ok</span>(<span class="self">self
</span>.<span class="number">0
</span>.session
.get(LOGIN_UNIX_TIMESTAMP_KEY)<span class="question-mark">?
</span>.map(OffsetDateTime::from_unix_timestamp)
.transpose()
.map_err(SessionExpiryError)<span class="question-mark">?</span>)
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>last_visited_at(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><OffsetDateTime>, GetIdentityError> {
<span class="prelude-val">Ok</span>(<span class="self">self
</span>.<span class="number">0
</span>.session
.get(LAST_VISIT_UNIX_TIMESTAMP_KEY)<span class="question-mark">?
</span>.map(OffsetDateTime::from_unix_timestamp)
.transpose()
.map_err(SessionExpiryError)<span class="question-mark">?</span>)
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>set_last_visited_at(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><(), LoginError> {
<span class="kw">let </span>now = OffsetDateTime::now_utc().unix_timestamp();
<span class="self">self</span>.<span class="number">0</span>.session.insert(LAST_VISIT_UNIX_TIMESTAMP_KEY, now)<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(())
}
}
<span class="doccomment">/// Extractor implementation for [`Identity`].
///
/// # Examples
/// ```
/// use actix_web::{get, Responder};
/// use actix_identity::Identity;
///
/// #[get("/")]
/// async fn index(user: Option<Identity>) -> impl Responder {
/// if let Some(user) = user {
/// format!("Welcome! {}", user.id().unwrap())
/// } else {
/// "Welcome Anonymous!".to_owned()
/// }
/// }
/// ```
</span><span class="kw">impl </span>FromRequest <span class="kw">for </span>Identity {
<span class="kw">type </span>Error = Error;
<span class="kw">type </span>Future = Ready<<span class="prelude-ty">Result</span><<span class="self">Self</span>, <span class="self">Self</span>::Error>>;
<span class="attr">#[inline]
</span><span class="kw">fn </span>from_request(req: <span class="kw-2">&</span>HttpRequest, <span class="kw">_</span>: <span class="kw-2">&mut </span>Payload) -> <span class="self">Self</span>::Future {
ready(Identity::extract(<span class="kw-2">&</span>req.extensions()).map_err(|err| {
<span class="kw">let </span>res = actix_web::error::InternalError::from_response(
err,
HttpResponse::new(StatusCode::UNAUTHORIZED),
);
actix_web::Error::from(res)
}))
}
}
</code></pre></div></section></main></body></html>