<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `actix-web-httpauth/src/headers/www_authenticate/challenge/basic.rs`."><title>basic.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../../../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../../../../static.files/rustdoc-bf502f66ec635d5d.css"><meta name="rustdoc-vars" data-root-path="../../../../../" data-static-root-path="../../../../../static.files/" data-current-crate="actix_web_httpauth" data-themes="" data-resource-suffix="" data-rustdoc-version="1.77.0-nightly (e51e98dde 2023-12-31)" data-channel="nightly" data-search-js="search-c17e98913a53b3b7.js" data-settings-js="settings-4313503d2e1961c2.js" ><script src="../../../../../static.files/storage-f2adc0d6ca4d09fb.js"></script><script defer src="../../../../../static.files/src-script-e66d777a5a92e9b2.js"></script><script defer src="../../../../../src-files.js"></script><script defer src="../../../../../static.files/main-0b2e2def73e61cbe.js"></script><noscript><link rel="stylesheet" href="../../../../../static.files/noscript-04d5337699b92874.css"></noscript><link rel="icon" href="https://actix.rs/favicon.ico"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="src-sidebar-title"> <h2>Files</h2></div></nav><div class="sidebar-resizer"></div> <main><nav class="sub"><form class="search-form"><span></span><div id="sidebar-button" tabindex="-1"><a href="../../../../../actix_web_httpauth/all.html" title="show sidebar"></a></div><input class="search-input" name="search" aria-label="Run search in the documentation" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" tabindex="-1"><a href="../../../../../help.html" title="help">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><div data-nosnippet><pre class="src-line-numbers"><a href="#1" id="1">1</a> <a href="#2" id="2">2</a> <a href="#3" id="3">3</a> <a href="#4" id="4">4</a> <a href="#5" id="5">5</a> <a href="#6" id="6">6</a> <a href="#7" id="7">7</a> <a href="#8" id="8">8</a> <a href="#9" id="9">9</a> <a href="#10" id="10">10</a> <a href="#11" id="11">11</a> <a href="#12" id="12">12</a> <a href="#13" id="13">13</a> <a href="#14" id="14">14</a> <a href="#15" id="15">15</a> <a href="#16" id="16">16</a> <a href="#17" id="17">17</a> <a href="#18" id="18">18</a> <a href="#19" id="19">19</a> <a href="#20" id="20">20</a> <a href="#21" id="21">21</a> <a href="#22" id="22">22</a> <a href="#23" id="23">23</a> <a href="#24" id="24">24</a> <a href="#25" id="25">25</a> <a href="#26" id="26">26</a> <a href="#27" id="27">27</a> <a href="#28" id="28">28</a> <a href="#29" id="29">29</a> <a href="#30" id="30">30</a> <a href="#31" id="31">31</a> <a href="#32" id="32">32</a> <a href="#33" id="33">33</a> <a href="#34" id="34">34</a> <a href="#35" id="35">35</a> <a href="#36" id="36">36</a> <a href="#37" id="37">37</a> <a href="#38" id="38">38</a> <a href="#39" id="39">39</a> <a href="#40" id="40">40</a> <a href="#41" id="41">41</a> <a href="#42" id="42">42</a> <a href="#43" id="43">43</a> <a href="#44" id="44">44</a> <a href="#45" id="45">45</a> <a href="#46" id="46">46</a> <a href="#47" id="47">47</a> <a href="#48" id="48">48</a> <a href="#49" id="49">49</a> <a href="#50" id="50">50</a> <a href="#51" id="51">51</a> <a href="#52" id="52">52</a> <a href="#53" id="53">53</a> <a href="#54" id="54">54</a> <a href="#55" id="55">55</a> <a href="#56" id="56">56</a> <a href="#57" id="57">57</a> <a href="#58" id="58">58</a> <a href="#59" id="59">59</a> <a href="#60" id="60">60</a> <a href="#61" id="61">61</a> <a href="#62" id="62">62</a> <a href="#63" id="63">63</a> <a href="#64" id="64">64</a> <a href="#65" id="65">65</a> <a href="#66" id="66">66</a> <a href="#67" id="67">67</a> <a href="#68" id="68">68</a> <a href="#69" id="69">69</a> <a href="#70" id="70">70</a> <a href="#71" id="71">71</a> <a href="#72" id="72">72</a> <a href="#73" id="73">73</a> <a href="#74" id="74">74</a> <a href="#75" id="75">75</a> <a href="#76" id="76">76</a> <a href="#77" id="77">77</a> <a href="#78" id="78">78</a> <a href="#79" id="79">79</a> <a href="#80" id="80">80</a> <a href="#81" id="81">81</a> <a href="#82" id="82">82</a> <a href="#83" id="83">83</a> <a href="#84" id="84">84</a> <a href="#85" id="85">85</a> <a href="#86" id="86">86</a> <a href="#87" id="87">87</a> <a href="#88" id="88">88</a> <a href="#89" id="89">89</a> <a href="#90" id="90">90</a> <a href="#91" id="91">91</a> <a href="#92" id="92">92</a> <a href="#93" id="93">93</a> <a href="#94" id="94">94</a> <a href="#95" id="95">95</a> <a href="#96" id="96">96</a> <a href="#97" id="97">97</a> <a href="#98" id="98">98</a> <a href="#99" id="99">99</a> <a href="#100" id="100">100</a> <a href="#101" id="101">101</a> <a href="#102" id="102">102</a> <a href="#103" id="103">103</a> <a href="#104" id="104">104</a> <a href="#105" id="105">105</a> <a href="#106" id="106">106</a> <a href="#107" id="107">107</a> <a href="#108" id="108">108</a> <a href="#109" id="109">109</a> <a href="#110" id="110">110</a> <a href="#111" id="111">111</a> <a href="#112" id="112">112</a> <a href="#113" id="113">113</a> <a href="#114" id="114">114</a> <a href="#115" id="115">115</a> <a href="#116" id="116">116</a> <a href="#117" id="117">117</a> <a href="#118" id="118">118</a> <a href="#119" id="119">119</a> <a href="#120" id="120">120</a> <a href="#121" id="121">121</a> <a href="#122" id="122">122</a> <a href="#123" id="123">123</a> <a href="#124" id="124">124</a> <a href="#125" id="125">125</a> <a href="#126" id="126">126</a> <a href="#127" id="127">127</a> <a href="#128" id="128">128</a> <a href="#129" id="129">129</a> <a href="#130" id="130">130</a> <a href="#131" id="131">131</a> <a href="#132" id="132">132</a> <a href="#133" id="133">133</a> <a href="#134" id="134">134</a> <a href="#135" id="135">135</a> <a href="#136" id="136">136</a> </pre></div><pre class="rust"><code><span class="doccomment">//! Challenge for the "Basic" HTTP Authentication Scheme. </span><span class="kw">use </span>std::{borrow::Cow, fmt, str}; <span class="kw">use </span>actix_web::{ http::header::{HeaderValue, InvalidHeaderValue, TryIntoHeaderValue}, web::{BufMut, Bytes, BytesMut}, }; <span class="kw">use </span><span class="kw">super</span>::Challenge; <span class="kw">use </span><span class="kw">crate</span>::utils; <span class="doccomment">/// Challenge for [`WWW-Authenticate`] header with HTTP Basic auth scheme, /// described in [RFC 7617](https://tools.ietf.org/html/rfc7617) /// /// # Examples /// ``` /// # use actix_web::{web, App, HttpRequest, HttpResponse, HttpServer}; /// use actix_web_httpauth::headers::www_authenticate::basic::Basic; /// use actix_web_httpauth::headers::www_authenticate::WwwAuthenticate; /// /// fn index(_req: HttpRequest) -> HttpResponse { /// let challenge = Basic::with_realm("Restricted area"); /// /// HttpResponse::Unauthorized() /// .insert_header(WwwAuthenticate(challenge)) /// .finish() /// } /// ``` /// /// [`WWW-Authenticate`]: ../struct.WwwAuthenticate.html </span><span class="attr">#[derive(Eq, PartialEq, Ord, PartialOrd, Hash, Debug, Default, Clone)] </span><span class="kw">pub struct </span>Basic { <span class="comment">// "realm" parameter is optional now: https://tools.ietf.org/html/rfc7235#appendix-A </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>>, } <span class="kw">impl </span>Basic { <span class="doccomment">/// Creates new `Basic` challenge with an empty `realm` field. /// /// # Examples /// ``` /// # use actix_web_httpauth::headers::www_authenticate::basic::Basic; /// let challenge = Basic::new(); /// ``` </span><span class="kw">pub fn </span>new() -> Basic { Default::default() } <span class="doccomment">/// Creates new `Basic` challenge from the provided `realm` field value. /// /// # Examples /// /// ``` /// # use actix_web_httpauth::headers::www_authenticate::basic::Basic; /// let challenge = Basic::with_realm("Restricted area"); /// ``` /// /// ``` /// # use actix_web_httpauth::headers::www_authenticate::basic::Basic; /// let my_realm = "Earth realm".to_string(); /// let challenge = Basic::with_realm(my_realm); /// ``` </span><span class="kw">pub fn </span>with_realm<T>(value: T) -> Basic <span class="kw">where </span>T: Into<Cow<<span class="lifetime">'static</span>, str>>, { Basic { realm: <span class="prelude-val">Some</span>(value.into()), } } } <span class="attr">#[doc(hidden)] </span><span class="kw">impl </span>Challenge <span class="kw">for </span>Basic { <span class="kw">fn </span>to_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> Bytes { <span class="comment">// 5 is for `"Basic"`, 9 is for `"realm=\"\""` </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>); <span class="kw">let </span><span class="kw-2">mut </span>buffer = BytesMut::with_capacity(length); buffer.put(<span class="kw-2">&</span><span class="string">b"Basic"</span>[..]); <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 { buffer.put(<span class="kw-2">&</span><span class="string">b" realm=\""</span>[..]); utils::put_quoted(<span class="kw-2">&mut </span>buffer, realm); buffer.put_u8(<span class="string">b'"'</span>); } buffer.freeze() } } <span class="kw">impl </span>fmt::Display <span class="kw">for </span>Basic { <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> { <span class="kw">let </span>bytes = <span class="self">self</span>.to_bytes(); <span class="kw">let </span>repr = str::from_utf8(<span class="kw-2">&</span>bytes) <span class="comment">// Should not happen since challenges are crafted manually // from a `&'static str` or `String` </span>.map_err(|<span class="kw">_</span>| fmt::Error)<span class="question-mark">?</span>; f.write_str(repr) } } <span class="kw">impl </span>TryIntoHeaderValue <span class="kw">for </span>Basic { <span class="kw">type </span>Error = InvalidHeaderValue; <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> { HeaderValue::from_maybe_shared(<span class="self">self</span>.to_bytes()) } } <span class="attr">#[cfg(test)] </span><span class="kw">mod </span>tests { <span class="kw">use super</span>::<span class="kw-2">*</span>; <span class="attr">#[test] </span><span class="kw">fn </span>test_plain_into_header_value() { <span class="kw">let </span>challenge = Basic { realm: <span class="prelude-val">None </span>}; <span class="kw">let </span>value = challenge.try_into_value(); <span class="macro">assert!</span>(value.is_ok()); <span class="kw">let </span>value = value.unwrap(); <span class="macro">assert_eq!</span>(value, <span class="string">"Basic"</span>); } <span class="attr">#[test] </span><span class="kw">fn </span>test_with_realm_into_header_value() { <span class="kw">let </span>challenge = Basic { realm: <span class="prelude-val">Some</span>(<span class="string">"Restricted area"</span>.into()), }; <span class="kw">let </span>value = challenge.try_into_value(); <span class="macro">assert!</span>(value.is_ok()); <span class="kw">let </span>value = value.unwrap(); <span class="macro">assert_eq!</span>(value, <span class="string">"Basic realm=\"Restricted area\""</span>); } } </code></pre></div></section></main></body></html>