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</pre><pre class="rust"><code><span class="kw">use</span> <span class="ident">std</span>::{<span class="ident">collections::HashSet</span>, <span class="ident">convert::TryFrom</span>, <span class="ident">convert::TryInto</span>, <span class="ident">fmt</span>, <span class="ident">rc::Rc</span>};
<span class="kw">use</span> <span class="ident">actix_web</span>::{
<span class="ident">dev::RequestHead</span>,
<span class="ident">error::Result</span>,
<span class="ident">http</span>::{
<span class="ident">header</span>::{<span class="self">self</span>, <span class="ident">HeaderName</span>, <span class="ident">HeaderValue</span>},
<span class="ident">Method</span>,
},
};
<span class="kw">use</span> <span class="ident">once_cell::sync::Lazy</span>;
<span class="kw">use</span> <span class="ident">smallvec::SmallVec</span>;
<span class="kw">use</span> <span class="kw">crate</span>::{<span class="ident">AllOrSome</span>, <span class="ident">CorsError</span>};
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>)]</span>
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct</span> <span class="ident">OriginFn</span> {
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">boxed_fn</span>: <span class="ident">Rc</span><span class="op"><</span><span class="kw">dyn</span> <span class="ident">Fn</span>(<span class="kw-2">&</span><span class="ident">HeaderValue</span>, <span class="kw-2">&</span><span class="ident">RequestHead</span>) -> <span class="ident">bool</span><span class="op">></span>,
}
<span class="kw">impl</span> <span class="ident">Default</span> <span class="kw">for</span> <span class="ident">OriginFn</span> {
<span class="doccomment">/// Dummy default for use in tiny_vec. Do not use.</span>
<span class="kw">fn</span> <span class="ident">default</span>() -> <span class="self">Self</span> {
<span class="kw">let</span> <span class="ident">boxed_fn</span>: <span class="ident">Rc</span><span class="op"><</span><span class="kw">dyn</span> <span class="ident">Fn</span>(<span class="kw-2">&</span><span class="kw">_</span>, <span class="kw-2">&</span><span class="kw">_</span>) -> <span class="kw">_</span><span class="op">></span> <span class="op">=</span> <span class="ident">Rc::new</span>(<span class="op">|</span><span class="ident">_origin</span>, <span class="ident">_req_head</span><span class="op">|</span> <span class="bool-val">false</span>);
<span class="self">Self</span> { <span class="ident">boxed_fn</span> }
}
}
<span class="kw">impl</span> <span class="ident">fmt::Debug</span> <span class="kw">for</span> <span class="ident">OriginFn</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&mut</span> <span class="ident">fmt::Formatter</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span>) -> <span class="ident">fmt::Result</span> {
<span class="ident">f</span>.<span class="ident">write_str</span>(<span class="string">"origin_fn"</span>)
}
}
<span class="doccomment">/// Try to parse header value as HTTP method.</span>
<span class="kw">fn</span> <span class="ident">header_value_try_into_method</span>(<span class="ident">hdr</span>: <span class="kw-2">&</span><span class="ident">HeaderValue</span>) -> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Method</span><span class="op">></span> {
<span class="ident">hdr</span>.<span class="ident">to_str</span>()
.<span class="ident">ok</span>()
.<span class="ident">and_then</span>(<span class="op">|</span><span class="ident">meth</span><span class="op">|</span> <span class="ident">Method::try_from</span>(<span class="ident">meth</span>).<span class="ident">ok</span>())
}
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">Clone</span>)]</span>
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct</span> <span class="ident">Inner</span> {
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">allowed_origins</span>: <span class="ident">AllOrSome</span><span class="op"><</span><span class="ident">HashSet</span><span class="op"><</span><span class="ident">HeaderValue</span><span class="op">></span><span class="op">></span>,
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">allowed_origins_fns</span>: <span class="ident">SmallVec</span><span class="op"><</span>[<span class="ident">OriginFn</span>; <span class="number">4</span>]<span class="op">></span>,
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">allowed_methods</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="ident">Method</span><span class="op">></span>,
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">allowed_methods_baked</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">HeaderValue</span><span class="op">></span>,
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">allowed_headers</span>: <span class="ident">AllOrSome</span><span class="op"><</span><span class="ident">HashSet</span><span class="op"><</span><span class="ident">HeaderName</span><span class="op">></span><span class="op">></span>,
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">allowed_headers_baked</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">HeaderValue</span><span class="op">></span>,
<span class="doccomment">/// `All` will echo back `Access-Control-Request-Header` list.</span>
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">expose_headers</span>: <span class="ident">AllOrSome</span><span class="op"><</span><span class="ident">HashSet</span><span class="op"><</span><span class="ident">HeaderName</span><span class="op">></span><span class="op">></span>,
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">expose_headers_baked</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">HeaderValue</span><span class="op">></span>,
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">max_age</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span>,
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">preflight</span>: <span class="ident">bool</span>,
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">send_wildcard</span>: <span class="ident">bool</span>,
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">supports_credentials</span>: <span class="ident">bool</span>,
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">vary_header</span>: <span class="ident">bool</span>,
}
<span class="kw">static</span> <span class="ident">EMPTY_ORIGIN_SET</span>: <span class="ident">Lazy</span><span class="op"><</span><span class="ident">HashSet</span><span class="op"><</span><span class="ident">HeaderValue</span><span class="op">></span><span class="op">></span> <span class="op">=</span> <span class="ident">Lazy::new</span>(<span class="ident">HashSet::new</span>);
<span class="kw">impl</span> <span class="ident">Inner</span> {
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">validate_origin</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">req</span>: <span class="kw-2">&</span><span class="ident">RequestHead</span>) -> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">CorsError</span><span class="op">></span> {
<span class="comment">// return early if all origins are allowed or get ref to allowed origins set</span>
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">clippy::mutable_key_type</span>)]</span>
<span class="kw">let</span> <span class="ident">allowed_origins</span> <span class="op">=</span> <span class="kw">match</span> <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">allowed_origins</span> {
<span class="ident">AllOrSome::All</span> <span class="kw">if</span> <span class="self">self</span>.<span class="ident">allowed_origins_fns</span>.<span class="ident">is_empty</span>() => <span class="kw">return</span> <span class="prelude-val">Ok</span>(()),
<span class="ident">AllOrSome::Some</span>(<span class="ident">allowed_origins</span>) => <span class="ident">allowed_origins</span>,
<span class="comment">// only function origin validators are defined</span>
<span class="kw">_</span> => <span class="kw-2">&</span><span class="ident">EMPTY_ORIGIN_SET</span>,
};
<span class="comment">// get origin header and try to parse as string</span>
<span class="kw">match</span> <span class="ident">req</span>.<span class="ident">headers</span>().<span class="ident">get</span>(<span class="ident">header::ORIGIN</span>) {
<span class="comment">// origin header exists and is a string</span>
<span class="prelude-val">Some</span>(<span class="ident">origin</span>) => {
<span class="kw">if</span> <span class="ident">allowed_origins</span>.<span class="ident">contains</span>(<span class="ident">origin</span>) <span class="op">|</span><span class="op">|</span> <span class="self">self</span>.<span class="ident">validate_origin_fns</span>(<span class="ident">origin</span>, <span class="ident">req</span>) {
<span class="prelude-val">Ok</span>(())
} <span class="kw">else</span> {
<span class="prelude-val">Err</span>(<span class="ident">CorsError::OriginNotAllowed</span>)
}
}
<span class="comment">// origin header is missing</span>
<span class="comment">// note: with our implementation, the origin header is required for OPTIONS request or</span>
<span class="comment">// else this would be unreachable</span>
<span class="prelude-val">None</span> => <span class="prelude-val">Err</span>(<span class="ident">CorsError::MissingOrigin</span>),
}
}
<span class="doccomment">/// Accepts origin if _ANY_ functions return true. Only called when Origin exists.</span>
<span class="kw">fn</span> <span class="ident">validate_origin_fns</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">origin</span>: <span class="kw-2">&</span><span class="ident">HeaderValue</span>, <span class="ident">req</span>: <span class="kw-2">&</span><span class="ident">RequestHead</span>) -> <span class="ident">bool</span> {
<span class="self">self</span>.<span class="ident">allowed_origins_fns</span>
.<span class="ident">iter</span>()
.<span class="ident">any</span>(<span class="op">|</span><span class="ident">origin_fn</span><span class="op">|</span> (<span class="ident">origin_fn</span>.<span class="ident">boxed_fn</span>)(<span class="ident">origin</span>, <span class="ident">req</span>))
}
<span class="doccomment">/// Only called if origin exists and always after it's validated.</span>
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">access_control_allow_origin</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">req</span>: <span class="kw-2">&</span><span class="ident">RequestHead</span>) -> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">HeaderValue</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">origin</span> <span class="op">=</span> <span class="ident">req</span>.<span class="ident">headers</span>().<span class="ident">get</span>(<span class="ident">header::ORIGIN</span>);
<span class="kw">match</span> <span class="self">self</span>.<span class="ident">allowed_origins</span> {
<span class="ident">AllOrSome::All</span> => {
<span class="kw">if</span> <span class="self">self</span>.<span class="ident">send_wildcard</span> {
<span class="prelude-val">Some</span>(<span class="ident">HeaderValue::from_static</span>(<span class="string">"*"</span>))
} <span class="kw">else</span> {
<span class="comment">// see note below about why `.cloned()` is correct</span>
<span class="ident">origin</span>.<span class="ident">cloned</span>()
}
}
<span class="ident">AllOrSome::Some</span>(<span class="kw">_</span>) => {
<span class="comment">// since origin (if it exists) is known to be allowed if this method is called</span>
<span class="comment">// then cloning the option is all that is required to be used as an echoed back</span>
<span class="comment">// header value (or omitted if None)</span>
<span class="ident">origin</span>.<span class="ident">cloned</span>()
}
}
}
<span class="doccomment">/// Use in preflight checks and therefore operates on header list in</span>
<span class="doccomment">/// `Access-Control-Request-Headers` not the actual header set.</span>
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">validate_allowed_method</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">req</span>: <span class="kw-2">&</span><span class="ident">RequestHead</span>) -> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">CorsError</span><span class="op">></span> {
<span class="comment">// extract access control header and try to parse as method</span>
<span class="kw">let</span> <span class="ident">request_method</span> <span class="op">=</span> <span class="ident">req</span>
.<span class="ident">headers</span>()
.<span class="ident">get</span>(<span class="ident">header::ACCESS_CONTROL_REQUEST_METHOD</span>)
.<span class="ident">map</span>(<span class="ident">header_value_try_into_method</span>);
<span class="kw">match</span> <span class="ident">request_method</span> {
<span class="comment">// method valid and allowed</span>
<span class="prelude-val">Some</span>(<span class="prelude-val">Some</span>(<span class="ident">method</span>)) <span class="kw">if</span> <span class="self">self</span>.<span class="ident">allowed_methods</span>.<span class="ident">contains</span>(<span class="kw-2">&</span><span class="ident">method</span>) => <span class="prelude-val">Ok</span>(()),
<span class="comment">// method valid but not allowed</span>
<span class="prelude-val">Some</span>(<span class="prelude-val">Some</span>(<span class="kw">_</span>)) => <span class="prelude-val">Err</span>(<span class="ident">CorsError::MethodNotAllowed</span>),
<span class="comment">// method invalid</span>
<span class="prelude-val">Some</span>(<span class="kw">_</span>) => <span class="prelude-val">Err</span>(<span class="ident">CorsError::BadRequestMethod</span>),
<span class="comment">// method missing</span>
<span class="prelude-val">None</span> => <span class="prelude-val">Err</span>(<span class="ident">CorsError::MissingRequestMethod</span>),
}
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">validate_allowed_headers</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">req</span>: <span class="kw-2">&</span><span class="ident">RequestHead</span>) -> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">CorsError</span><span class="op">></span> {
<span class="comment">// return early if all headers are allowed or get ref to allowed origins set</span>
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">clippy::mutable_key_type</span>)]</span>
<span class="kw">let</span> <span class="ident">allowed_headers</span> <span class="op">=</span> <span class="kw">match</span> <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">allowed_headers</span> {
<span class="ident">AllOrSome::All</span> => <span class="kw">return</span> <span class="prelude-val">Ok</span>(()),
<span class="ident">AllOrSome::Some</span>(<span class="ident">allowed_headers</span>) => <span class="ident">allowed_headers</span>,
};
<span class="comment">// extract access control header as string</span>
<span class="comment">// header format should be comma separated header names</span>
<span class="kw">let</span> <span class="ident">request_headers</span> <span class="op">=</span> <span class="ident">req</span>
.<span class="ident">headers</span>()
.<span class="ident">get</span>(<span class="ident">header::ACCESS_CONTROL_REQUEST_HEADERS</span>)
.<span class="ident">map</span>(<span class="op">|</span><span class="ident">hdr</span><span class="op">|</span> <span class="ident">hdr</span>.<span class="ident">to_str</span>());
<span class="kw">match</span> <span class="ident">request_headers</span> {
<span class="comment">// header list is valid string</span>
<span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>(<span class="ident">headers</span>)) => {
<span class="comment">// the set is ephemeral we take care not to mutate the</span>
<span class="comment">// inserted keys so this lint exception is acceptable</span>
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">clippy::mutable_key_type</span>)]</span>
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">request_headers</span> <span class="op">=</span> <span class="ident">HashSet::with_capacity</span>(<span class="number">8</span>);
<span class="comment">// try to convert each header name in the comma-separated list</span>
<span class="kw">for</span> <span class="ident">hdr</span> <span class="kw">in</span> <span class="ident">headers</span>.<span class="ident">split</span>(<span class="string">','</span>) {
<span class="kw">match</span> <span class="ident">hdr</span>.<span class="ident">trim</span>().<span class="ident">try_into</span>() {
<span class="prelude-val">Ok</span>(<span class="ident">hdr</span>) => <span class="ident">request_headers</span>.<span class="ident">insert</span>(<span class="ident">hdr</span>),
<span class="prelude-val">Err</span>(<span class="kw">_</span>) => <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CorsError::BadRequestHeaders</span>),
};
}
<span class="comment">// header list must contain 1 or more header name</span>
<span class="kw">if</span> <span class="ident">request_headers</span>.<span class="ident">is_empty</span>() {
<span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CorsError::BadRequestHeaders</span>);
}
<span class="comment">// request header list must be a subset of allowed headers</span>
<span class="kw">if</span> <span class="op">!</span><span class="ident">request_headers</span>.<span class="ident">is_subset</span>(<span class="ident">allowed_headers</span>) {
<span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CorsError::HeadersNotAllowed</span>);
}
<span class="prelude-val">Ok</span>(())
}
<span class="comment">// header list is not a string</span>
<span class="prelude-val">Some</span>(<span class="prelude-val">Err</span>(<span class="kw">_</span>)) => <span class="prelude-val">Err</span>(<span class="ident">CorsError::BadRequestHeaders</span>),
<span class="comment">// header list missing</span>
<span class="prelude-val">None</span> => <span class="prelude-val">Ok</span>(()),
}
}
}
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span>
<span class="kw">mod</span> <span class="ident">test</span> {
<span class="kw">use</span> <span class="ident">std::rc::Rc</span>;
<span class="kw">use</span> <span class="ident">actix_web</span>::{
<span class="ident">dev::Transform</span>,
<span class="ident">http</span>::{
<span class="ident">header</span>::{<span class="self">self</span>, <span class="ident">HeaderValue</span>},
<span class="ident">Method</span>, <span class="ident">StatusCode</span>,
},
<span class="ident">test</span>::{<span class="self">self</span>, <span class="ident">TestRequest</span>},
};
<span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::Cors</span>;
<span class="kw">fn</span> <span class="ident">val_as_str</span>(<span class="ident">val</span>: <span class="kw-2">&</span><span class="ident">HeaderValue</span>) -> <span class="kw-2">&</span><span class="ident">str</span> {
<span class="ident">val</span>.<span class="ident">to_str</span>().<span class="ident">unwrap</span>()
}
<span class="attribute">#[<span class="ident">actix_rt::test</span>]</span>
<span class="kw">async</span> <span class="kw">fn</span> <span class="ident">test_validate_not_allowed_origin</span>() {
<span class="kw">let</span> <span class="ident">cors</span> <span class="op">=</span> <span class="ident">Cors::default</span>()
.<span class="ident">allowed_origin</span>(<span class="string">"https://www.example.com"</span>)
.<span class="ident">new_transform</span>(<span class="ident">test::ok_service</span>())
.<span class="kw">await</span>
.<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="ident">req</span> <span class="op">=</span> <span class="ident">TestRequest::get</span>()
.<span class="ident">insert_header</span>((<span class="ident">header::ORIGIN</span>, <span class="string">"https://www.unknown.com"</span>))
.<span class="ident">insert_header</span>((<span class="ident">header::ACCESS_CONTROL_REQUEST_HEADERS</span>, <span class="string">"DNT"</span>))
.<span class="ident">to_srv_request</span>();
<span class="macro">assert!</span>(<span class="ident">cors</span>.<span class="ident">inner</span>.<span class="ident">validate_origin</span>(<span class="ident">req</span>.<span class="ident">head</span>()).<span class="ident">is_err</span>());
<span class="macro">assert!</span>(<span class="ident">cors</span>.<span class="ident">inner</span>.<span class="ident">validate_allowed_method</span>(<span class="ident">req</span>.<span class="ident">head</span>()).<span class="ident">is_err</span>());
<span class="macro">assert!</span>(<span class="ident">cors</span>.<span class="ident">inner</span>.<span class="ident">validate_allowed_headers</span>(<span class="ident">req</span>.<span class="ident">head</span>()).<span class="ident">is_err</span>());
}
<span class="attribute">#[<span class="ident">actix_rt::test</span>]</span>
<span class="kw">async</span> <span class="kw">fn</span> <span class="ident">test_preflight</span>() {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">cors</span> <span class="op">=</span> <span class="ident">Cors::default</span>()
.<span class="ident">allow_any_origin</span>()
.<span class="ident">send_wildcard</span>()
.<span class="ident">max_age</span>(<span class="number">3600</span>)
.<span class="ident">allowed_methods</span>(<span class="macro">vec!</span>[<span class="ident">Method::GET</span>, <span class="ident">Method::OPTIONS</span>, <span class="ident">Method::POST</span>])
.<span class="ident">allowed_headers</span>(<span class="macro">vec!</span>[<span class="ident">header::AUTHORIZATION</span>, <span class="ident">header::ACCEPT</span>])
.<span class="ident">allowed_header</span>(<span class="ident">header::CONTENT_TYPE</span>)
.<span class="ident">new_transform</span>(<span class="ident">test::ok_service</span>())
.<span class="kw">await</span>
.<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="ident">req</span> <span class="op">=</span> <span class="ident">TestRequest::default</span>()
.<span class="ident">method</span>(<span class="ident">Method::OPTIONS</span>)
.<span class="ident">insert_header</span>((<span class="string">"Origin"</span>, <span class="string">"https://www.example.com"</span>))
.<span class="ident">insert_header</span>((<span class="ident">header::ACCESS_CONTROL_REQUEST_HEADERS</span>, <span class="string">"X-Not-Allowed"</span>))
.<span class="ident">to_srv_request</span>();
<span class="macro">assert!</span>(<span class="ident">cors</span>.<span class="ident">inner</span>.<span class="ident">validate_allowed_method</span>(<span class="ident">req</span>.<span class="ident">head</span>()).<span class="ident">is_err</span>());
<span class="macro">assert!</span>(<span class="ident">cors</span>.<span class="ident">inner</span>.<span class="ident">validate_allowed_headers</span>(<span class="ident">req</span>.<span class="ident">head</span>()).<span class="ident">is_err</span>());
<span class="kw">let</span> <span class="ident">resp</span> <span class="op">=</span> <span class="ident">test::call_service</span>(<span class="kw-2">&</span><span class="ident">cors</span>, <span class="ident">req</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(<span class="ident">resp</span>.<span class="ident">status</span>(), <span class="ident">StatusCode::BAD_REQUEST</span>);
<span class="kw">let</span> <span class="ident">req</span> <span class="op">=</span> <span class="ident">TestRequest::default</span>()
.<span class="ident">method</span>(<span class="ident">Method::OPTIONS</span>)
.<span class="ident">insert_header</span>((<span class="string">"Origin"</span>, <span class="string">"https://www.example.com"</span>))
.<span class="ident">insert_header</span>((<span class="ident">header::ACCESS_CONTROL_REQUEST_METHOD</span>, <span class="string">"put"</span>))
.<span class="ident">to_srv_request</span>();
<span class="macro">assert!</span>(<span class="ident">cors</span>.<span class="ident">inner</span>.<span class="ident">validate_allowed_method</span>(<span class="ident">req</span>.<span class="ident">head</span>()).<span class="ident">is_err</span>());
<span class="macro">assert!</span>(<span class="ident">cors</span>.<span class="ident">inner</span>.<span class="ident">validate_allowed_headers</span>(<span class="ident">req</span>.<span class="ident">head</span>()).<span class="ident">is_ok</span>());
<span class="kw">let</span> <span class="ident">req</span> <span class="op">=</span> <span class="ident">TestRequest::default</span>()
.<span class="ident">method</span>(<span class="ident">Method::OPTIONS</span>)
.<span class="ident">insert_header</span>((<span class="string">"Origin"</span>, <span class="string">"https://www.example.com"</span>))
.<span class="ident">insert_header</span>((<span class="ident">header::ACCESS_CONTROL_REQUEST_METHOD</span>, <span class="string">"POST"</span>))
.<span class="ident">insert_header</span>((
<span class="ident">header::ACCESS_CONTROL_REQUEST_HEADERS</span>,
<span class="string">"AUTHORIZATION,ACCEPT"</span>,
))
.<span class="ident">to_srv_request</span>();
<span class="kw">let</span> <span class="ident">resp</span> <span class="op">=</span> <span class="ident">test::call_service</span>(<span class="kw-2">&</span><span class="ident">cors</span>, <span class="ident">req</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(
<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="string">b"*"</span>[..]),
<span class="ident">resp</span>.<span class="ident">headers</span>()
.<span class="ident">get</span>(<span class="ident">header::ACCESS_CONTROL_ALLOW_ORIGIN</span>)
.<span class="ident">map</span>(<span class="ident">HeaderValue::as_bytes</span>)
);
<span class="macro">assert_eq!</span>(
<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="string">b"3600"</span>[..]),
<span class="ident">resp</span>.<span class="ident">headers</span>()
.<span class="ident">get</span>(<span class="ident">header::ACCESS_CONTROL_MAX_AGE</span>)
.<span class="ident">map</span>(<span class="ident">HeaderValue::as_bytes</span>)
);
<span class="kw">let</span> <span class="ident">hdr</span> <span class="op">=</span> <span class="ident">resp</span>
.<span class="ident">headers</span>()
.<span class="ident">get</span>(<span class="ident">header::ACCESS_CONTROL_ALLOW_HEADERS</span>)
.<span class="ident">map</span>(<span class="ident">val_as_str</span>)
.<span class="ident">unwrap</span>();
<span class="macro">assert!</span>(<span class="ident">hdr</span>.<span class="ident">contains</span>(<span class="string">"authorization"</span>));
<span class="macro">assert!</span>(<span class="ident">hdr</span>.<span class="ident">contains</span>(<span class="string">"accept"</span>));
<span class="macro">assert!</span>(<span class="ident">hdr</span>.<span class="ident">contains</span>(<span class="string">"content-type"</span>));
<span class="kw">let</span> <span class="ident">methods</span> <span class="op">=</span> <span class="ident">resp</span>
.<span class="ident">headers</span>()
.<span class="ident">get</span>(<span class="ident">header::ACCESS_CONTROL_ALLOW_METHODS</span>)
.<span class="ident">unwrap</span>()
.<span class="ident">to_str</span>()
.<span class="ident">unwrap</span>();
<span class="macro">assert!</span>(<span class="ident">methods</span>.<span class="ident">contains</span>(<span class="string">"POST"</span>));
<span class="macro">assert!</span>(<span class="ident">methods</span>.<span class="ident">contains</span>(<span class="string">"GET"</span>));
<span class="macro">assert!</span>(<span class="ident">methods</span>.<span class="ident">contains</span>(<span class="string">"OPTIONS"</span>));
<span class="ident">Rc::get_mut</span>(<span class="kw-2">&mut</span> <span class="ident">cors</span>.<span class="ident">inner</span>).<span class="ident">unwrap</span>().<span class="ident">preflight</span> <span class="op">=</span> <span class="bool-val">false</span>;
<span class="kw">let</span> <span class="ident">req</span> <span class="op">=</span> <span class="ident">TestRequest::default</span>()
.<span class="ident">method</span>(<span class="ident">Method::OPTIONS</span>)
.<span class="ident">insert_header</span>((<span class="string">"Origin"</span>, <span class="string">"https://www.example.com"</span>))
.<span class="ident">insert_header</span>((<span class="ident">header::ACCESS_CONTROL_REQUEST_METHOD</span>, <span class="string">"POST"</span>))
.<span class="ident">insert_header</span>((
<span class="ident">header::ACCESS_CONTROL_REQUEST_HEADERS</span>,
<span class="string">"AUTHORIZATION,ACCEPT"</span>,
))
.<span class="ident">to_srv_request</span>();
<span class="kw">let</span> <span class="ident">resp</span> <span class="op">=</span> <span class="ident">test::call_service</span>(<span class="kw-2">&</span><span class="ident">cors</span>, <span class="ident">req</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(<span class="ident">resp</span>.<span class="ident">status</span>(), <span class="ident">StatusCode::OK</span>);
}
}
</code></pre></div>
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