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</pre><pre class="rust"><code><span class="doccomment">//! Opinionated request identity service for Actix Web apps.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! [`IdentityService`] middleware can be used with different policies types to store</span>
<span class="doccomment">//! identity information.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! A cookie based policy is provided. [`CookieIdentityPolicy`] uses cookies as identity storage.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! To access current request identity, use the [`Identity`] extractor.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ```</span>
<span class="doccomment">//! use actix_web::*;</span>
<span class="doccomment">//! use actix_identity::{Identity, CookieIdentityPolicy, IdentityService};</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! #[get(&quot;/&quot;)]</span>
<span class="doccomment">//! async fn index(id: Identity) -&gt; String {</span>
<span class="doccomment">//! // access request identity</span>
<span class="doccomment">//! if let Some(id) = id.identity() {</span>
<span class="doccomment">//! format!(&quot;Welcome! {}&quot;, id)</span>
<span class="doccomment">//! } else {</span>
<span class="doccomment">//! &quot;Welcome Anonymous!&quot;.to_owned()</span>
<span class="doccomment">//! }</span>
<span class="doccomment">//! }</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! #[post(&quot;/login&quot;)]</span>
<span class="doccomment">//! async fn login(id: Identity) -&gt; HttpResponse {</span>
<span class="doccomment">//! id.remember(&quot;User1&quot;.to_owned()); // &lt;- remember identity</span>
<span class="doccomment">//! HttpResponse::Ok().finish()</span>
<span class="doccomment">//! }</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! #[post(&quot;/logout&quot;)]</span>
<span class="doccomment">//! async fn logout(id: Identity) -&gt; HttpResponse {</span>
<span class="doccomment">//! id.forget(); // &lt;- remove identity</span>
<span class="doccomment">//! HttpResponse::Ok().finish()</span>
<span class="doccomment">//! }</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! // create cookie identity backend</span>
<span class="doccomment">//! let policy = CookieIdentityPolicy::new(&amp;[0; 32])</span>
<span class="doccomment">//! .name(&quot;auth-cookie&quot;)</span>
<span class="doccomment">//! .secure(false);</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! let app = App::new()</span>
<span class="doccomment">//! // wrap policy into middleware identity middleware</span>
<span class="doccomment">//! .wrap(IdentityService::new(policy))</span>
<span class="doccomment">//! .service(services![index, login, logout]);</span>
<span class="doccomment">//! ```</span>
<span class="attribute">#![<span class="ident">deny</span>(<span class="ident">rust_2018_idioms</span>, <span class="ident">nonstandard_style</span>)]</span>
<span class="attribute">#![<span class="ident">warn</span>(<span class="ident">future_incompatible</span>)]</span>
<span class="kw">use</span> <span class="ident">std::future::Future</span>;
<span class="kw">use</span> <span class="ident">actix_web</span>::{
<span class="ident">dev</span>::{<span class="ident">ServiceRequest</span>, <span class="ident">ServiceResponse</span>},
<span class="ident">Error</span>, <span class="ident">HttpMessage</span>, <span class="prelude-ty">Result</span>,
};
<span class="kw">mod</span> <span class="ident">cookie</span>;
<span class="kw">mod</span> <span class="ident">identity</span>;
<span class="kw">mod</span> <span class="ident">middleware</span>;
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident"><span class="self">self</span>::cookie::CookieIdentityPolicy</span>;
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident"><span class="self">self</span>::identity::Identity</span>;
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident"><span class="self">self</span>::middleware::IdentityService</span>;
<span class="doccomment">/// Identity policy.</span>
<span class="kw">pub</span> <span class="kw">trait</span> <span class="ident">IdentityPolicy</span>: <span class="ident">Sized</span> <span class="op">+</span> <span class="lifetime">&#39;static</span> {
<span class="doccomment">/// The return type of the middleware</span>
<span class="kw">type</span> <span class="ident">Future</span>: <span class="ident">Future</span><span class="op">&lt;</span><span class="ident">Output</span> <span class="op">=</span> <span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">String</span><span class="op">&gt;</span>, <span class="ident">Error</span><span class="op">&gt;</span><span class="op">&gt;</span>;
<span class="doccomment">/// The return type of the middleware</span>
<span class="kw">type</span> <span class="ident">ResponseFuture</span>: <span class="ident">Future</span><span class="op">&lt;</span><span class="ident">Output</span> <span class="op">=</span> <span class="prelude-ty">Result</span><span class="op">&lt;</span>(), <span class="ident">Error</span><span class="op">&gt;</span><span class="op">&gt;</span>;
<span class="doccomment">/// Parse the session from request and load data from a service identity.</span>
<span class="kw">fn</span> <span class="ident">from_request</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">req</span>: <span class="kw-2">&amp;mut</span> <span class="ident">ServiceRequest</span>) -&gt; <span class="ident"><span class="self">Self</span>::Future</span>;
<span class="doccomment">/// Write changes to response</span>
<span class="kw">fn</span> <span class="ident">to_response</span><span class="op">&lt;</span><span class="ident">B</span><span class="op">&gt;</span>(
<span class="kw-2">&amp;</span><span class="self">self</span>,
<span class="ident">identity</span>: <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">String</span><span class="op">&gt;</span>,
<span class="ident">changed</span>: <span class="ident">bool</span>,
<span class="ident">response</span>: <span class="kw-2">&amp;mut</span> <span class="ident">ServiceResponse</span><span class="op">&lt;</span><span class="ident">B</span><span class="op">&gt;</span>,
) -&gt; <span class="ident"><span class="self">Self</span>::ResponseFuture</span>;
}
<span class="doccomment">/// Helper trait that allows to get Identity.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// It could be used in middleware but identity policy must be set before any other middleware that</span>
<span class="doccomment">/// needs identity. RequestIdentity is implemented both for `ServiceRequest` and `HttpRequest`.</span>
<span class="kw">pub</span> <span class="kw">trait</span> <span class="ident">RequestIdentity</span> {
<span class="kw">fn</span> <span class="ident">get_identity</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">String</span><span class="op">&gt;</span>;
}
<span class="kw">impl</span><span class="op">&lt;</span><span class="ident">T</span><span class="op">&gt;</span> <span class="ident">RequestIdentity</span> <span class="kw">for</span> <span class="ident">T</span>
<span class="kw">where</span>
<span class="ident">T</span>: <span class="ident">HttpMessage</span>,
{
<span class="kw">fn</span> <span class="ident">get_identity</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">String</span><span class="op">&gt;</span> {
<span class="ident">Identity::get_identity</span>(<span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">extensions</span>())
}
}
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span>
<span class="kw">mod</span> <span class="ident">tests</span> {
<span class="kw">use</span> <span class="ident">std::time::SystemTime</span>;
<span class="kw">use</span> <span class="ident">actix_web</span>::{
<span class="ident">body</span>::{<span class="ident">BoxBody</span>, <span class="ident">EitherBody</span>},
<span class="ident">dev::ServiceResponse</span>,
<span class="ident">test</span>, <span class="ident">web</span>, <span class="ident">App</span>, <span class="ident">Error</span>,
};
<span class="kw">use</span> <span class="kw">super</span>::<span class="kw-2">*</span>;
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">const</span> <span class="ident">COOKIE_KEY_MASTER</span>: [<span class="ident">u8</span>; <span class="number">32</span>] <span class="op">=</span> [<span class="number">0</span>; <span class="number">32</span>];
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">const</span> <span class="ident">COOKIE_NAME</span>: <span class="kw-2">&amp;</span><span class="ident">str</span> <span class="op">=</span> <span class="string">&quot;actix_auth&quot;</span>;
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">const</span> <span class="ident">COOKIE_LOGIN</span>: <span class="kw-2">&amp;</span><span class="ident">str</span> <span class="op">=</span> <span class="string">&quot;test&quot;</span>;
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">clippy::enum_variant_names</span>)]</span>
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">enum</span> <span class="ident">LoginTimestampCheck</span> {
<span class="ident">NoTimestamp</span>,
<span class="ident">NewTimestamp</span>,
<span class="ident">OldTimestamp</span>(<span class="ident">SystemTime</span>),
}
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">clippy::enum_variant_names</span>)]</span>
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">enum</span> <span class="ident">VisitTimeStampCheck</span> {
<span class="ident">NoTimestamp</span>,
<span class="ident">NewTimestamp</span>,
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">async</span> <span class="kw">fn</span> <span class="ident">create_identity_server</span><span class="op">&lt;</span>
<span class="ident">F</span>: <span class="ident">Fn</span>(<span class="ident">CookieIdentityPolicy</span>) -&gt; <span class="ident">CookieIdentityPolicy</span> <span class="op">+</span> <span class="ident">Sync</span> <span class="op">+</span> <span class="ident">Send</span> <span class="op">+</span> <span class="ident">Clone</span> <span class="op">+</span> <span class="lifetime">&#39;static</span>,
<span class="op">&gt;</span>(
<span class="ident">f</span>: <span class="ident">F</span>,
) -&gt; <span class="kw">impl</span> <span class="ident">actix_service::Service</span><span class="op">&lt;</span>
<span class="ident">actix_http::Request</span>,
<span class="ident">Response</span> <span class="op">=</span> <span class="ident">ServiceResponse</span><span class="op">&lt;</span><span class="ident">EitherBody</span><span class="op">&lt;</span><span class="ident">BoxBody</span><span class="op">&gt;</span><span class="op">&gt;</span>,
<span class="ident">Error</span> <span class="op">=</span> <span class="ident">Error</span>,
<span class="op">&gt;</span> {
<span class="ident">test::init_service</span>(
<span class="ident">App::new</span>()
.<span class="ident">wrap</span>(<span class="ident">IdentityService::new</span>(<span class="ident">f</span>(<span class="ident">CookieIdentityPolicy::new</span>(
<span class="kw-2">&amp;</span><span class="ident">COOKIE_KEY_MASTER</span>,
)
.<span class="ident">secure</span>(<span class="bool-val">false</span>)
.<span class="ident">name</span>(<span class="ident">COOKIE_NAME</span>))))
.<span class="ident">service</span>(<span class="ident">web::resource</span>(<span class="string">&quot;/&quot;</span>).<span class="ident">to</span>(<span class="op">|</span><span class="ident">id</span>: <span class="ident">Identity</span><span class="op">|</span> <span class="kw">async</span> <span class="kw">move</span> {
<span class="kw">let</span> <span class="ident">identity</span> <span class="op">=</span> <span class="ident">id</span>.<span class="ident">identity</span>();
<span class="kw">if</span> <span class="ident">identity</span>.<span class="ident">is_none</span>() {
<span class="ident">id</span>.<span class="ident">remember</span>(<span class="ident">COOKIE_LOGIN</span>.<span class="ident">to_string</span>())
}
<span class="ident">web::Json</span>(<span class="ident">identity</span>)
})),
)
.<span class="kw">await</span>
}
}
</code></pre></div>
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