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</pre><pre class="rust ">
<span class="kw">use</span> <span class="ident">http</span>::<span class="ident">header</span>::{<span class="self">self</span>, <span class="ident">HeaderName</span>};
<span class="kw">use</span> <span class="ident">server</span>::<span class="ident">Request</span>;
<span class="kw">const</span> <span class="ident">X_FORWARDED_FOR</span>: <span class="kw-2">&</span>[<span class="ident">u8</span>] <span class="op">=</span> <span class="string">b"x-forwarded-for"</span>;
<span class="kw">const</span> <span class="ident">X_FORWARDED_HOST</span>: <span class="kw-2">&</span>[<span class="ident">u8</span>] <span class="op">=</span> <span class="string">b"x-forwarded-host"</span>;
<span class="kw">const</span> <span class="ident">X_FORWARDED_PROTO</span>: <span class="kw-2">&</span>[<span class="ident">u8</span>] <span class="op">=</span> <span class="string">b"x-forwarded-proto"</span>;
<span class="doccomment">/// `HttpRequest` connection information</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Default</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ConnectionInfo</span> {
<span class="ident">scheme</span>: <span class="ident">String</span>,
<span class="ident">host</span>: <span class="ident">String</span>,
<span class="ident">remote</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>,
<span class="ident">peer</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>,
}
<span class="kw">impl</span> <span class="ident">ConnectionInfo</span> {
<span class="doccomment">/// Create *ConnectionInfo* instance for a request.</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"cargo-clippy"</span>, <span class="ident">allow</span>(<span class="ident">cyclomatic_complexity</span>))]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">update</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">req</span>: <span class="kw-2">&</span><span class="ident">Request</span>) {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">host</span> <span class="op">=</span> <span class="prelude-val">None</span>;
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">scheme</span> <span class="op">=</span> <span class="prelude-val">None</span>;
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">remote</span> <span class="op">=</span> <span class="prelude-val">None</span>;
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">peer</span> <span class="op">=</span> <span class="prelude-val">None</span>;
<span class="comment">// load forwarded header</span>
<span class="kw">for</span> <span class="ident">hdr</span> <span class="kw">in</span> <span class="ident">req</span>.<span class="ident">headers</span>().<span class="ident">get_all</span>(<span class="ident">header</span>::<span class="ident">FORWARDED</span>) {
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>(<span class="ident">val</span>) <span class="op">=</span> <span class="ident">hdr</span>.<span class="ident">to_str</span>() {
<span class="kw">for</span> <span class="ident">pair</span> <span class="kw">in</span> <span class="ident">val</span>.<span class="ident">split</span>(<span class="string">';'</span>) {
<span class="kw">for</span> <span class="ident">el</span> <span class="kw">in</span> <span class="ident">pair</span>.<span class="ident">split</span>(<span class="string">','</span>) {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">items</span> <span class="op">=</span> <span class="ident">el</span>.<span class="ident">trim</span>().<span class="ident">splitn</span>(<span class="number">2</span>, <span class="string">'='</span>);
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">name</span>) <span class="op">=</span> <span class="ident">items</span>.<span class="ident">next</span>() {
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">val</span>) <span class="op">=</span> <span class="ident">items</span>.<span class="ident">next</span>() {
<span class="kw">match</span> <span class="kw-2">&</span><span class="ident">name</span>.<span class="ident">to_lowercase</span>() <span class="kw">as</span> <span class="kw-2">&</span><span class="ident">str</span> {
<span class="string">"for"</span> <span class="op">=></span> <span class="kw">if</span> <span class="ident">remote</span>.<span class="ident">is_none</span>() {
<span class="ident">remote</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">val</span>.<span class="ident">trim</span>());
},
<span class="string">"proto"</span> <span class="op">=></span> <span class="kw">if</span> <span class="ident">scheme</span>.<span class="ident">is_none</span>() {
<span class="ident">scheme</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">val</span>.<span class="ident">trim</span>());
},
<span class="string">"host"</span> <span class="op">=></span> <span class="kw">if</span> <span class="ident">host</span>.<span class="ident">is_none</span>() {
<span class="ident">host</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">val</span>.<span class="ident">trim</span>());
},
<span class="kw">_</span> <span class="op">=></span> (),
}
}
}
}
}
}
}
<span class="comment">// scheme</span>
<span class="kw">if</span> <span class="ident">scheme</span>.<span class="ident">is_none</span>() {
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">h</span>) <span class="op">=</span> <span class="ident">req</span>
.<span class="ident">headers</span>()
.<span class="ident">get</span>(<span class="ident">HeaderName</span>::<span class="ident">from_lowercase</span>(<span class="ident">X_FORWARDED_PROTO</span>).<span class="ident">unwrap</span>())
{
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>(<span class="ident">h</span>) <span class="op">=</span> <span class="ident">h</span>.<span class="ident">to_str</span>() {
<span class="ident">scheme</span> <span class="op">=</span> <span class="ident">h</span>.<span class="ident">split</span>(<span class="string">','</span>).<span class="ident">next</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">v</span><span class="op">|</span> <span class="ident">v</span>.<span class="ident">trim</span>());
}
}
<span class="kw">if</span> <span class="ident">scheme</span>.<span class="ident">is_none</span>() {
<span class="ident">scheme</span> <span class="op">=</span> <span class="ident">req</span>.<span class="ident">uri</span>().<span class="ident">scheme_part</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">a</span><span class="op">|</span> <span class="ident">a</span>.<span class="ident">as_str</span>());
<span class="kw">if</span> <span class="ident">scheme</span>.<span class="ident">is_none</span>() <span class="op">&&</span> <span class="ident">req</span>.<span class="ident">server_settings</span>().<span class="ident">secure</span>() {
<span class="ident">scheme</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="string">"https"</span>)
}
}
}
<span class="comment">// host</span>
<span class="kw">if</span> <span class="ident">host</span>.<span class="ident">is_none</span>() {
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">h</span>) <span class="op">=</span> <span class="ident">req</span>
.<span class="ident">headers</span>()
.<span class="ident">get</span>(<span class="ident">HeaderName</span>::<span class="ident">from_lowercase</span>(<span class="ident">X_FORWARDED_HOST</span>).<span class="ident">unwrap</span>())
{
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>(<span class="ident">h</span>) <span class="op">=</span> <span class="ident">h</span>.<span class="ident">to_str</span>() {
<span class="ident">host</span> <span class="op">=</span> <span class="ident">h</span>.<span class="ident">split</span>(<span class="string">','</span>).<span class="ident">next</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">v</span><span class="op">|</span> <span class="ident">v</span>.<span class="ident">trim</span>());
}
}
<span class="kw">if</span> <span class="ident">host</span>.<span class="ident">is_none</span>() {
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">h</span>) <span class="op">=</span> <span class="ident">req</span>.<span class="ident">headers</span>().<span class="ident">get</span>(<span class="ident">header</span>::<span class="ident">HOST</span>) {
<span class="ident">host</span> <span class="op">=</span> <span class="ident">h</span>.<span class="ident">to_str</span>().<span class="ident">ok</span>();
}
<span class="kw">if</span> <span class="ident">host</span>.<span class="ident">is_none</span>() {
<span class="ident">host</span> <span class="op">=</span> <span class="ident">req</span>.<span class="ident">uri</span>().<span class="ident">authority_part</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">a</span><span class="op">|</span> <span class="ident">a</span>.<span class="ident">as_str</span>());
<span class="kw">if</span> <span class="ident">host</span>.<span class="ident">is_none</span>() {
<span class="ident">host</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">req</span>.<span class="ident">server_settings</span>().<span class="ident">host</span>());
}
}
}
}
<span class="comment">// remote addr</span>
<span class="kw">if</span> <span class="ident">remote</span>.<span class="ident">is_none</span>() {
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">h</span>) <span class="op">=</span> <span class="ident">req</span>
.<span class="ident">headers</span>()
.<span class="ident">get</span>(<span class="ident">HeaderName</span>::<span class="ident">from_lowercase</span>(<span class="ident">X_FORWARDED_FOR</span>).<span class="ident">unwrap</span>())
{
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>(<span class="ident">h</span>) <span class="op">=</span> <span class="ident">h</span>.<span class="ident">to_str</span>() {
<span class="ident">remote</span> <span class="op">=</span> <span class="ident">h</span>.<span class="ident">split</span>(<span class="string">','</span>).<span class="ident">next</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">v</span><span class="op">|</span> <span class="ident">v</span>.<span class="ident">trim</span>());
}
}
<span class="kw">if</span> <span class="ident">remote</span>.<span class="ident">is_none</span>() {
<span class="comment">// get peeraddr from socketaddr</span>
<span class="ident">peer</span> <span class="op">=</span> <span class="ident">req</span>.<span class="ident">peer_addr</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">addr</span><span class="op">|</span> <span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}"</span>, <span class="ident">addr</span>));
}
}
<span class="self">self</span>.<span class="ident">scheme</span> <span class="op">=</span> <span class="ident">scheme</span>.<span class="ident">unwrap_or</span>(<span class="string">"http"</span>).<span class="ident">to_owned</span>();
<span class="self">self</span>.<span class="ident">host</span> <span class="op">=</span> <span class="ident">host</span>.<span class="ident">unwrap_or</span>(<span class="string">"localhost"</span>).<span class="ident">to_owned</span>();
<span class="self">self</span>.<span class="ident">remote</span> <span class="op">=</span> <span class="ident">remote</span>.<span class="ident">map</span>(<span class="op">|</span><span class="ident">s</span><span class="op">|</span> <span class="ident">s</span>.<span class="ident">to_owned</span>());
<span class="self">self</span>.<span class="ident">peer</span> <span class="op">=</span> <span class="ident">peer</span>;
}
<span class="doccomment">/// Scheme of the request.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Scheme is resolved through the following headers, in this order:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// - Forwarded</span>
<span class="doccomment">/// - X-Forwarded-Proto</span>
<span class="doccomment">/// - Uri</span>
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">scheme</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">str</span> {
<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">scheme</span>
}
<span class="doccomment">/// Hostname of the request.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Hostname is resolved through the following headers, in this order:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// - Forwarded</span>
<span class="doccomment">/// - X-Forwarded-Host</span>
<span class="doccomment">/// - Host</span>
<span class="doccomment">/// - Uri</span>
<span class="doccomment">/// - Server hostname</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">host</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">str</span> {
<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">host</span>
}
<span class="doccomment">/// Remote IP of client initiated HTTP request.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The IP is resolved through the following headers, in this order:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// - Forwarded</span>
<span class="doccomment">/// - X-Forwarded-For</span>
<span class="doccomment">/// - peer name of opened socket</span>
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">remote</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">str</span><span class="op">></span> {
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="kw-2">ref</span> <span class="ident">r</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">remote</span> {
<span class="prelude-val">Some</span>(<span class="ident">r</span>)
} <span class="kw">else</span> <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="kw-2">ref</span> <span class="ident">peer</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">peer</span> {
<span class="prelude-val">Some</span>(<span class="ident">peer</span>)
} <span class="kw">else</span> {
<span class="prelude-val">None</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="kw">super</span>::<span class="kw-2">*</span>;
<span class="kw">use</span> <span class="ident">test</span>::<span class="ident">TestRequest</span>;
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_forwarded</span>() {
<span class="kw">let</span> <span class="ident">req</span> <span class="op">=</span> <span class="ident">TestRequest</span>::<span class="ident">default</span>().<span class="ident">request</span>();
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">info</span> <span class="op">=</span> <span class="ident">ConnectionInfo</span>::<span class="ident">default</span>();
<span class="ident">info</span>.<span class="ident">update</span>(<span class="kw-2">&</span><span class="ident">req</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">info</span>.<span class="ident">scheme</span>(), <span class="string">"http"</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">info</span>.<span class="ident">host</span>(), <span class="string">"localhost:8080"</span>);
<span class="kw">let</span> <span class="ident">req</span> <span class="op">=</span> <span class="ident">TestRequest</span>::<span class="ident">default</span>()
.<span class="ident">header</span>(
<span class="ident">header</span>::<span class="ident">FORWARDED</span>,
<span class="string">"for=192.0.2.60; proto=https; by=203.0.113.43; host=rust-lang.org"</span>,
)
.<span class="ident">request</span>();
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">info</span> <span class="op">=</span> <span class="ident">ConnectionInfo</span>::<span class="ident">default</span>();
<span class="ident">info</span>.<span class="ident">update</span>(<span class="kw-2">&</span><span class="ident">req</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">info</span>.<span class="ident">scheme</span>(), <span class="string">"https"</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">info</span>.<span class="ident">host</span>(), <span class="string">"rust-lang.org"</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">info</span>.<span class="ident">remote</span>(), <span class="prelude-val">Some</span>(<span class="string">"192.0.2.60"</span>));
<span class="kw">let</span> <span class="ident">req</span> <span class="op">=</span> <span class="ident">TestRequest</span>::<span class="ident">default</span>()
.<span class="ident">header</span>(<span class="ident">header</span>::<span class="ident">HOST</span>, <span class="string">"rust-lang.org"</span>)
.<span class="ident">request</span>();
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">info</span> <span class="op">=</span> <span class="ident">ConnectionInfo</span>::<span class="ident">default</span>();
<span class="ident">info</span>.<span class="ident">update</span>(<span class="kw-2">&</span><span class="ident">req</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">info</span>.<span class="ident">scheme</span>(), <span class="string">"http"</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">info</span>.<span class="ident">host</span>(), <span class="string">"rust-lang.org"</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">info</span>.<span class="ident">remote</span>(), <span class="prelude-val">None</span>);
<span class="kw">let</span> <span class="ident">req</span> <span class="op">=</span> <span class="ident">TestRequest</span>::<span class="ident">default</span>()
.<span class="ident">header</span>(<span class="ident">X_FORWARDED_FOR</span>, <span class="string">"192.0.2.60"</span>)
.<span class="ident">request</span>();
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">info</span> <span class="op">=</span> <span class="ident">ConnectionInfo</span>::<span class="ident">default</span>();
<span class="ident">info</span>.<span class="ident">update</span>(<span class="kw-2">&</span><span class="ident">req</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">info</span>.<span class="ident">remote</span>(), <span class="prelude-val">Some</span>(<span class="string">"192.0.2.60"</span>));
<span class="kw">let</span> <span class="ident">req</span> <span class="op">=</span> <span class="ident">TestRequest</span>::<span class="ident">default</span>()
.<span class="ident">header</span>(<span class="ident">X_FORWARDED_HOST</span>, <span class="string">"192.0.2.60"</span>)
.<span class="ident">request</span>();
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">info</span> <span class="op">=</span> <span class="ident">ConnectionInfo</span>::<span class="ident">default</span>();
<span class="ident">info</span>.<span class="ident">update</span>(<span class="kw-2">&</span><span class="ident">req</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">info</span>.<span class="ident">host</span>(), <span class="string">"192.0.2.60"</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">info</span>.<span class="ident">remote</span>(), <span class="prelude-val">None</span>);
<span class="kw">let</span> <span class="ident">req</span> <span class="op">=</span> <span class="ident">TestRequest</span>::<span class="ident">default</span>()
.<span class="ident">header</span>(<span class="ident">X_FORWARDED_PROTO</span>, <span class="string">"https"</span>)
.<span class="ident">request</span>();
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">info</span> <span class="op">=</span> <span class="ident">ConnectionInfo</span>::<span class="ident">default</span>();
<span class="ident">info</span>.<span class="ident">update</span>(<span class="kw-2">&</span><span class="ident">req</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">info</span>.<span class="ident">scheme</span>(), <span class="string">"https"</span>);
}
}
</pre>
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