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</pre><pre class="rust"><code><span class="kw">use</span> <span class="ident">std::rc::Rc</span>;
<span class="kw">use</span> <span class="ident">actix_session::SessionExt</span>;
<span class="kw">use</span> <span class="ident">actix_utils::future</span>::{<span class="ident">ready</span>, <span class="ident">Ready</span>};
<span class="kw">use</span> <span class="ident">actix_web</span>::{
<span class="ident">body::MessageBody</span>,
<span class="ident">cookie::time</span>::{<span class="ident">format_description::well_known::Rfc3339</span>, <span class="ident">OffsetDateTime</span>},
<span class="ident">dev</span>::{<span class="ident">Service</span>, <span class="ident">ServiceRequest</span>, <span class="ident">ServiceResponse</span>, <span class="ident">Transform</span>},
<span class="ident">Error</span>, <span class="ident">HttpMessage</span> <span class="kw">as</span> <span class="kw">_</span>, <span class="prelude-ty">Result</span>,
};
<span class="kw">use</span> <span class="ident">futures_core::future::LocalBoxFuture</span>;
<span class="kw">use</span> <span class="kw">crate</span>::{
<span class="ident">config</span>::{<span class="ident">Configuration</span>, <span class="ident">IdentityMiddlewareBuilder</span>},
<span class="ident">identity::IdentityInner</span>,
<span class="ident">Identity</span>,
};
<span class="doccomment">/// Identity management middleware.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use actix_web::{cookie::Key, App, HttpServer};</span>
<span class="doccomment">/// use actix_session::storage::RedisSessionStore;</span>
<span class="doccomment">/// use actix_identity::{Identity, IdentityMiddleware};</span>
<span class="doccomment">/// use actix_session::{Session, SessionMiddleware};</span>
<span class="doccomment">///</span>
<span class="doccomment">/// #[actix_web::main]</span>
<span class="doccomment">/// async fn main() {</span>
<span class="doccomment">/// let secret_key = Key::generate();</span>
<span class="doccomment">/// let redis_store = RedisSessionStore::new("redis://127.0.0.1:6379").await.unwrap();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// HttpServer::new(move || {</span>
<span class="doccomment">/// App::new()</span>
<span class="doccomment">/// // Install the identity framework first.</span>
<span class="doccomment">/// .wrap(IdentityMiddleware::default())</span>
<span class="doccomment">/// // The identity system is built on top of sessions.</span>
<span class="doccomment">/// // You must install the session middleware to leverage `actix-identity`.</span>
<span class="doccomment">/// .wrap(SessionMiddleware::new(redis_store.clone(), secret_key.clone()))</span>
<span class="doccomment">/// })</span>
<span class="doccomment">/// # ;</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Default</span>, <span class="ident">Clone</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">IdentityMiddleware</span> {
<span class="ident">configuration</span>: <span class="ident">Rc</span><span class="op"><</span><span class="ident">Configuration</span><span class="op">></span>,
}
<span class="kw">impl</span> <span class="ident">IdentityMiddleware</span> {
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">configuration</span>: <span class="ident">Configuration</span>) -> <span class="self">Self</span> {
<span class="self">Self</span> {
<span class="ident">configuration</span>: <span class="ident">Rc::new</span>(<span class="ident">configuration</span>),
}
}
<span class="doccomment">/// A fluent API to configure [`IdentityMiddleware`].</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">builder</span>() -> <span class="ident">IdentityMiddlewareBuilder</span> {
<span class="ident">IdentityMiddlewareBuilder::new</span>()
}
}
<span class="kw">impl</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">B</span><span class="op">></span> <span class="ident">Transform</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">ServiceRequest</span><span class="op">></span> <span class="kw">for</span> <span class="ident">IdentityMiddleware</span>
<span class="kw">where</span>
<span class="ident">S</span>: <span class="ident">Service</span><span class="op"><</span><span class="ident">ServiceRequest</span>, <span class="ident">Response</span> <span class="op">=</span> <span class="ident">ServiceResponse</span><span class="op"><</span><span class="ident">B</span><span class="op">></span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">Error</span><span class="op">></span> <span class="op">+</span> <span class="lifetime">'static</span>,
<span class="ident">S::Future</span>: <span class="lifetime">'static</span>,
<span class="ident">B</span>: <span class="ident">MessageBody</span> <span class="op">+</span> <span class="lifetime">'static</span>,
{
<span class="kw">type</span> <span class="ident">Response</span> <span class="op">=</span> <span class="ident">ServiceResponse</span><span class="op"><</span><span class="ident">B</span><span class="op">></span>;
<span class="kw">type</span> <span class="ident">Error</span> <span class="op">=</span> <span class="ident">Error</span>;
<span class="kw">type</span> <span class="ident">Transform</span> <span class="op">=</span> <span class="ident">InnerIdentityMiddleware</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>;
<span class="kw">type</span> <span class="ident">InitError</span> <span class="op">=</span> ();
<span class="kw">type</span> <span class="ident">Future</span> <span class="op">=</span> <span class="ident">Ready</span><span class="op"><</span><span class="prelude-ty">Result</span><span class="op"><</span><span class="ident"><span class="self">Self</span>::Transform</span>, <span class="ident"><span class="self">Self</span>::InitError</span><span class="op">></span><span class="op">></span>;
<span class="kw">fn</span> <span class="ident">new_transform</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">service</span>: <span class="ident">S</span>) -> <span class="ident"><span class="self">Self</span>::Future</span> {
<span class="ident">ready</span>(<span class="prelude-val">Ok</span>(<span class="ident">InnerIdentityMiddleware</span> {
<span class="ident">service</span>: <span class="ident">Rc::new</span>(<span class="ident">service</span>),
<span class="ident">configuration</span>: <span class="ident">Rc::clone</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">configuration</span>),
}))
}
}
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">InnerIdentityMiddleware</span><span class="op"><</span><span class="ident">S</span><span class="op">></span> {
<span class="ident">service</span>: <span class="ident">Rc</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>,
<span class="ident">configuration</span>: <span class="ident">Rc</span><span class="op"><</span><span class="ident">Configuration</span><span class="op">></span>,
}
<span class="kw">impl</span><span class="op"><</span><span class="ident">S</span><span class="op">></span> <span class="ident">Clone</span> <span class="kw">for</span> <span class="ident">InnerIdentityMiddleware</span><span class="op"><</span><span class="ident">S</span><span class="op">></span> {
<span class="kw">fn</span> <span class="ident">clone</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span> {
<span class="self">Self</span> {
<span class="ident">service</span>: <span class="ident">Rc::clone</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">service</span>),
<span class="ident">configuration</span>: <span class="ident">Rc::clone</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">configuration</span>),
}
}
}
<span class="kw">impl</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">B</span><span class="op">></span> <span class="ident">Service</span><span class="op"><</span><span class="ident">ServiceRequest</span><span class="op">></span> <span class="kw">for</span> <span class="ident">InnerIdentityMiddleware</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>
<span class="kw">where</span>
<span class="ident">S</span>: <span class="ident">Service</span><span class="op"><</span><span class="ident">ServiceRequest</span>, <span class="ident">Response</span> <span class="op">=</span> <span class="ident">ServiceResponse</span><span class="op"><</span><span class="ident">B</span><span class="op">></span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">Error</span><span class="op">></span> <span class="op">+</span> <span class="lifetime">'static</span>,
<span class="ident">S::Future</span>: <span class="lifetime">'static</span>,
<span class="ident">B</span>: <span class="ident">MessageBody</span> <span class="op">+</span> <span class="lifetime">'static</span>,
{
<span class="kw">type</span> <span class="ident">Response</span> <span class="op">=</span> <span class="ident">ServiceResponse</span><span class="op"><</span><span class="ident">B</span><span class="op">></span>;
<span class="kw">type</span> <span class="ident">Error</span> <span class="op">=</span> <span class="ident">Error</span>;
<span class="kw">type</span> <span class="ident">Future</span> <span class="op">=</span> <span class="ident">LocalBoxFuture</span><span class="op"><</span><span class="lifetime">'static</span>, <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident"><span class="self">Self</span>::Response</span>, <span class="ident"><span class="self">Self</span>::Error</span><span class="op">></span><span class="op">></span>;
<span class="macro">actix_service::forward_ready!</span>(<span class="ident">service</span>);
<span class="kw">fn</span> <span class="ident">call</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">req</span>: <span class="ident">ServiceRequest</span>) -> <span class="ident"><span class="self">Self</span>::Future</span> {
<span class="kw">let</span> <span class="ident">srv</span> <span class="op">=</span> <span class="ident">Rc::clone</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">service</span>);
<span class="kw">let</span> <span class="ident">configuration</span> <span class="op">=</span> <span class="ident">Rc::clone</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">configuration</span>);
<span class="ident">Box::pin</span>(<span class="kw">async</span> <span class="kw">move</span> {
<span class="kw">let</span> <span class="ident">identity_inner</span> <span class="op">=</span> <span class="ident">IdentityInner</span> {
<span class="ident">session</span>: <span class="ident">req</span>.<span class="ident">get_session</span>(),
<span class="ident">logout_behaviour</span>: <span class="ident">configuration</span>.<span class="ident">on_logout</span>.<span class="ident">clone</span>(),
<span class="ident">is_login_deadline_enabled</span>: <span class="ident">configuration</span>.<span class="ident">login_deadline</span>.<span class="ident">is_some</span>(),
<span class="ident">is_visit_deadline_enabled</span>: <span class="ident">configuration</span>.<span class="ident">visit_deadline</span>.<span class="ident">is_some</span>(),
};
<span class="ident">req</span>.<span class="ident">extensions_mut</span>().<span class="ident">insert</span>(<span class="ident">identity_inner</span>);
<span class="ident">enforce_policies</span>(<span class="kw-2">&</span><span class="ident">req</span>, <span class="kw-2">&</span><span class="ident">configuration</span>);
<span class="ident">srv</span>.<span class="ident">call</span>(<span class="ident">req</span>).<span class="kw">await</span>
})
}
}
<span class="comment">// easier to scan with returns where they are</span>
<span class="comment">// especially if the function body were to evolve in the future</span>
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">clippy::needless_return</span>)]</span>
<span class="kw">fn</span> <span class="ident">enforce_policies</span>(<span class="ident">req</span>: <span class="kw-2">&</span><span class="ident">ServiceRequest</span>, <span class="ident">configuration</span>: <span class="kw-2">&</span><span class="ident">Configuration</span>) {
<span class="kw">let</span> <span class="ident">must_extract_identity</span> <span class="op">=</span>
<span class="ident">configuration</span>.<span class="ident">login_deadline</span>.<span class="ident">is_some</span>() <span class="op">|</span><span class="op">|</span> <span class="ident">configuration</span>.<span class="ident">visit_deadline</span>.<span class="ident">is_some</span>();
<span class="kw">if</span> <span class="op">!</span><span class="ident">must_extract_identity</span> {
<span class="kw">return</span>;
}
<span class="kw">let</span> <span class="ident">identity</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">Identity::extract</span>(<span class="kw-2">&</span><span class="ident">req</span>.<span class="ident">extensions</span>()) {
<span class="prelude-val">Ok</span>(<span class="ident">identity</span>) => <span class="ident">identity</span>,
<span class="prelude-val">Err</span>(<span class="ident">err</span>) => {
<span class="macro">tracing::debug!</span>(
<span class="ident">error</span>.<span class="ident">display</span> <span class="op">=</span> <span class="op">%</span><span class="ident">err</span>,
<span class="ident">error</span>.<span class="ident">debug</span> <span class="op">=</span> <span class="question-mark">?</span><span class="ident">err</span>,
<span class="string">"Failed to extract an `Identity` from the incoming request."</span>
);
<span class="kw">return</span>;
}
};
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">login_deadline</span>) <span class="op">=</span> <span class="ident">configuration</span>.<span class="ident">login_deadline</span> {
<span class="kw">if</span> <span class="macro">matches!</span>(
<span class="ident">enforce_login_deadline</span>(<span class="kw-2">&</span><span class="ident">identity</span>, <span class="ident">login_deadline</span>),
<span class="ident">PolicyDecision::LogOut</span>
) {
<span class="ident">identity</span>.<span class="ident">logout</span>();
<span class="kw">return</span>;
}
}
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">visit_deadline</span>) <span class="op">=</span> <span class="ident">configuration</span>.<span class="ident">visit_deadline</span> {
<span class="kw">if</span> <span class="macro">matches!</span>(
<span class="ident">enforce_visit_deadline</span>(<span class="kw-2">&</span><span class="ident">identity</span>, <span class="ident">visit_deadline</span>),
<span class="ident">PolicyDecision::LogOut</span>
) {
<span class="ident">identity</span>.<span class="ident">logout</span>();
<span class="kw">return</span>;
} <span class="kw">else</span> {
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=</span> <span class="ident">identity</span>.<span class="ident">set_last_visited_at</span>() {
<span class="macro">tracing::warn!</span>(
<span class="ident">error</span>.<span class="ident">display</span> <span class="op">=</span> <span class="op">%</span><span class="ident">err</span>,
<span class="ident">error</span>.<span class="ident">debug</span> <span class="op">=</span> <span class="question-mark">?</span><span class="ident">err</span>,
<span class="string">"Failed to set the last visited timestamp on `Identity` for an incoming request."</span>
);
}
}
}
}
<span class="kw">fn</span> <span class="ident">enforce_login_deadline</span>(
<span class="ident">identity</span>: <span class="kw-2">&</span><span class="ident">Identity</span>,
<span class="ident">login_deadline</span>: <span class="ident">std::time::Duration</span>,
) -> <span class="ident">PolicyDecision</span> {
<span class="kw">match</span> <span class="ident">identity</span>.<span class="ident">logged_at</span>() {
<span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>) => {
<span class="macro">tracing::info!</span>(
<span class="string">"Login deadline is enabled, but there is no login timestamp in the session \
state attached to the incoming request. Logging the user out."</span>
);
<span class="ident">PolicyDecision::LogOut</span>
}
<span class="prelude-val">Err</span>(<span class="ident">err</span>) => {
<span class="macro">tracing::info!</span>(
<span class="ident">error</span>.<span class="ident">display</span> <span class="op">=</span> <span class="op">%</span><span class="ident">err</span>,
<span class="ident">error</span>.<span class="ident">debug</span> <span class="op">=</span> <span class="question-mark">?</span><span class="ident">err</span>,
<span class="string">"Login deadline is enabled but we failed to extract the login timestamp from the \
session state attached to the incoming request. Logging the user out."</span>
);
<span class="ident">PolicyDecision::LogOut</span>
}
<span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(<span class="ident">logged_in_at</span>)) => {
<span class="kw">let</span> <span class="ident">elapsed</span> <span class="op">=</span> <span class="ident">OffsetDateTime::now_utc</span>() <span class="op">-</span> <span class="ident">logged_in_at</span>;
<span class="kw">if</span> <span class="ident">elapsed</span> <span class="op">></span> <span class="ident">login_deadline</span> {
<span class="macro">tracing::info!</span>(
<span class="ident">user</span>.<span class="ident">logged_in_at</span> <span class="op">=</span> <span class="op">%</span><span class="ident">logged_in_at</span>.<span class="ident">format</span>(<span class="kw-2">&</span><span class="ident">Rfc3339</span>).<span class="ident">unwrap_or_default</span>(),
<span class="ident">identity</span>.<span class="ident">login_deadline_seconds</span> <span class="op">=</span> <span class="ident">login_deadline</span>.<span class="ident">as_secs</span>(),
<span class="ident">identity</span>.<span class="ident">elapsed_since_login_seconds</span> <span class="op">=</span> <span class="ident">elapsed</span>.<span class="ident">whole_seconds</span>(),
<span class="string">"Login deadline is enabled and too much time has passed since the user logged \
in. Logging the user out."</span>
);
<span class="ident">PolicyDecision::LogOut</span>
} <span class="kw">else</span> {
<span class="ident">PolicyDecision::StayLoggedIn</span>
}
}
}
}
<span class="kw">fn</span> <span class="ident">enforce_visit_deadline</span>(
<span class="ident">identity</span>: <span class="kw-2">&</span><span class="ident">Identity</span>,
<span class="ident">visit_deadline</span>: <span class="ident">std::time::Duration</span>,
) -> <span class="ident">PolicyDecision</span> {
<span class="kw">match</span> <span class="ident">identity</span>.<span class="ident">last_visited_at</span>() {
<span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>) => {
<span class="macro">tracing::info!</span>(
<span class="string">"Last visit deadline is enabled, but there is no last visit timestamp in the \
session state attached to the incoming request. Logging the user out."</span>
);
<span class="ident">PolicyDecision::LogOut</span>
}
<span class="prelude-val">Err</span>(<span class="ident">err</span>) => {
<span class="macro">tracing::info!</span>(
<span class="ident">error</span>.<span class="ident">display</span> <span class="op">=</span> <span class="op">%</span><span class="ident">err</span>,
<span class="ident">error</span>.<span class="ident">debug</span> <span class="op">=</span> <span class="question-mark">?</span><span class="ident">err</span>,
<span class="string">"Last visit deadline is enabled but we failed to extract the last visit timestamp \
from the session state attached to the incoming request. Logging the user out."</span>
);
<span class="ident">PolicyDecision::LogOut</span>
}
<span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(<span class="ident">last_visited_at</span>)) => {
<span class="kw">let</span> <span class="ident">elapsed</span> <span class="op">=</span> <span class="ident">OffsetDateTime::now_utc</span>() <span class="op">-</span> <span class="ident">last_visited_at</span>;
<span class="kw">if</span> <span class="ident">elapsed</span> <span class="op">></span> <span class="ident">visit_deadline</span> {
<span class="macro">tracing::info!</span>(
<span class="ident">user</span>.<span class="ident">last_visited_at</span> <span class="op">=</span> <span class="op">%</span><span class="ident">last_visited_at</span>.<span class="ident">format</span>(<span class="kw-2">&</span><span class="ident">Rfc3339</span>).<span class="ident">unwrap_or_default</span>(),
<span class="ident">identity</span>.<span class="ident">visit_deadline_seconds</span> <span class="op">=</span> <span class="ident">visit_deadline</span>.<span class="ident">as_secs</span>(),
<span class="ident">identity</span>.<span class="ident">elapsed_since_last_visit_seconds</span> <span class="op">=</span> <span class="ident">elapsed</span>.<span class="ident">whole_seconds</span>(),
<span class="string">"Last visit deadline is enabled and too much time has passed since the last \
time the user visited. Logging the user out."</span>
);
<span class="ident">PolicyDecision::LogOut</span>
} <span class="kw">else</span> {
<span class="ident">PolicyDecision::StayLoggedIn</span>
}
}
}
}
<span class="kw">enum</span> <span class="ident">PolicyDecision</span> {
<span class="ident">StayLoggedIn</span>,
<span class="ident">LogOut</span>,
}
</code></pre></div>
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