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</pre></div><pre class="rust"><code><span class="doccomment">//! Challenge for the "Basic" HTTP Authentication Scheme.
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</span><span class="kw">use </span>std::{borrow::Cow, fmt, str};
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<span class="kw">use </span>actix_web::{
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http::header::{HeaderValue, InvalidHeaderValue, TryIntoHeaderValue},
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web::{BufMut, Bytes, BytesMut},
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};
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<span class="kw">use </span><span class="kw">super</span>::Challenge;
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<span class="kw">use </span><span class="kw">crate</span>::utils;
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<span class="doccomment">/// Challenge for [`WWW-Authenticate`] header with HTTP Basic auth scheme,
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/// described in [RFC 7617](https://tools.ietf.org/html/rfc7617)
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///
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/// # Examples
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/// ```
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/// # use actix_web::{web, App, HttpRequest, HttpResponse, HttpServer};
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/// use actix_web_httpauth::headers::www_authenticate::basic::Basic;
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/// use actix_web_httpauth::headers::www_authenticate::WwwAuthenticate;
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///
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/// fn index(_req: HttpRequest) -> HttpResponse {
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/// let challenge = Basic::with_realm("Restricted area");
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///
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/// HttpResponse::Unauthorized()
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/// .insert_header(WwwAuthenticate(challenge))
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/// .finish()
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/// }
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/// ```
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///
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/// [`WWW-Authenticate`]: ../struct.WwwAuthenticate.html
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</span><span class="attr">#[derive(Eq, PartialEq, Ord, PartialOrd, Hash, Debug, Default, Clone)]
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</span><span class="kw">pub struct </span>Basic {
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<span class="comment">// "realm" parameter is optional now: https://tools.ietf.org/html/rfc7235#appendix-A
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</span><span class="kw">pub</span>(<span class="kw">crate</span>) realm: <span class="prelude-ty">Option</span><Cow<<span class="lifetime">'static</span>, str>>,
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}
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<span class="kw">impl </span>Basic {
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<span class="doccomment">/// Creates new `Basic` challenge with an empty `realm` field.
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///
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/// # Examples
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/// ```
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/// # use actix_web_httpauth::headers::www_authenticate::basic::Basic;
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/// let challenge = Basic::new();
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/// ```
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</span><span class="kw">pub fn </span>new() -> Basic {
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Default::default()
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}
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<span class="doccomment">/// Creates new `Basic` challenge from the provided `realm` field value.
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///
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/// # Examples
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///
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/// ```
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/// # use actix_web_httpauth::headers::www_authenticate::basic::Basic;
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/// let challenge = Basic::with_realm("Restricted area");
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/// ```
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///
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/// ```
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/// # use actix_web_httpauth::headers::www_authenticate::basic::Basic;
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/// let my_realm = "Earth realm".to_string();
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/// let challenge = Basic::with_realm(my_realm);
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/// ```
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</span><span class="kw">pub fn </span>with_realm<T>(value: T) -> Basic
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<span class="kw">where
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</span>T: Into<Cow<<span class="lifetime">'static</span>, str>>,
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{
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Basic {
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realm: <span class="prelude-val">Some</span>(value.into()),
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}
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}
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}
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<span class="attr">#[doc(hidden)]
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</span><span class="kw">impl </span>Challenge <span class="kw">for </span>Basic {
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<span class="kw">fn </span>to_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> Bytes {
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<span class="comment">// 5 is for `"Basic"`, 9 is for `"realm=\"\""`
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</span><span class="kw">let </span>length = <span class="number">5 </span>+ <span class="self">self</span>.realm.as_ref().map_or(<span class="number">0</span>, |realm| realm.len() + <span class="number">9</span>);
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<span class="kw">let </span><span class="kw-2">mut </span>buffer = BytesMut::with_capacity(length);
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buffer.put(<span class="kw-2">&</span><span class="string">b"Basic"</span>[..]);
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<span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">ref </span>realm) = <span class="self">self</span>.realm {
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buffer.put(<span class="kw-2">&</span><span class="string">b" realm=\""</span>[..]);
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utils::put_quoted(<span class="kw-2">&mut </span>buffer, realm);
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buffer.put_u8(<span class="string">b'"'</span>);
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}
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buffer.freeze()
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}
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}
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<span class="kw">impl </span>fmt::Display <span class="kw">for </span>Basic {
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<span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> <span class="prelude-ty">Result</span><(), fmt::Error> {
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<span class="kw">let </span>bytes = <span class="self">self</span>.to_bytes();
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<span class="kw">let </span>repr = str::from_utf8(<span class="kw-2">&</span>bytes)
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<span class="comment">// Should not happen since challenges are crafted manually
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// from a `&'static str` or `String`
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</span>.map_err(|<span class="kw">_</span>| fmt::Error)<span class="question-mark">?</span>;
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f.write_str(repr)
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}
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}
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<span class="kw">impl </span>TryIntoHeaderValue <span class="kw">for </span>Basic {
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<span class="kw">type </span>Error = InvalidHeaderValue;
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<span class="kw">fn </span>try_into_value(<span class="self">self</span>) -> <span class="prelude-ty">Result</span><HeaderValue, <span class="self">Self</span>::Error> {
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HeaderValue::from_maybe_shared(<span class="self">self</span>.to_bytes())
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}
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}
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<span class="attr">#[cfg(test)]
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</span><span class="kw">mod </span>tests {
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<span class="kw">use super</span>::<span class="kw-2">*</span>;
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<span class="attr">#[test]
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</span><span class="kw">fn </span>test_plain_into_header_value() {
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<span class="kw">let </span>challenge = Basic { realm: <span class="prelude-val">None </span>};
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<span class="kw">let </span>value = challenge.try_into_value();
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<span class="macro">assert!</span>(value.is_ok());
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<span class="kw">let </span>value = value.unwrap();
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<span class="macro">assert_eq!</span>(value, <span class="string">"Basic"</span>);
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}
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<span class="attr">#[test]
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</span><span class="kw">fn </span>test_with_realm_into_header_value() {
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<span class="kw">let </span>challenge = Basic {
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realm: <span class="prelude-val">Some</span>(<span class="string">"Restricted area"</span>.into()),
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};
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<span class="kw">let </span>value = challenge.try_into_value();
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<span class="macro">assert!</span>(value.is_ok());
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<span class="kw">let </span>value = value.unwrap();
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<span class="macro">assert_eq!</span>(value, <span class="string">"Basic realm=\"Restricted area\""</span>);
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}
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}
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</code></pre></div></section></main></body></html> |