| <!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 `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/rustls-0.19.1/src/server/handy.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>handy.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../main.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../rustls/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../rustls/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="kw">use </span><span class="kw">crate</span>::error::TLSError; |
| <span class="kw">use </span><span class="kw">crate</span>::key; |
| <span class="kw">use </span><span class="kw">crate</span>::server; |
| <span class="kw">use </span><span class="kw">crate</span>::server::ClientHello; |
| <span class="kw">use </span><span class="kw">crate</span>::sign; |
| <span class="kw">use </span>webpki; |
| |
| <span class="kw">use </span>std::collections; |
| <span class="kw">use </span>std::sync::{Arc, Mutex}; |
| |
| <span class="doccomment">/// Something which never stores sessions. |
| </span><span class="kw">pub struct </span>NoServerSessionStorage {} |
| |
| <span class="kw">impl </span>server::StoresServerSessions <span class="kw">for </span>NoServerSessionStorage { |
| <span class="kw">fn </span>put(<span class="kw-2">&</span><span class="self">self</span>, _id: Vec<u8>, _sec: Vec<u8>) -> bool { |
| <span class="bool-val">false |
| </span>} |
| <span class="kw">fn </span>get(<span class="kw-2">&</span><span class="self">self</span>, _id: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Option</span><Vec<u8>> { |
| <span class="prelude-val">None |
| </span>} |
| <span class="kw">fn </span>take(<span class="kw-2">&</span><span class="self">self</span>, _id: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Option</span><Vec<u8>> { |
| <span class="prelude-val">None |
| </span>} |
| } |
| |
| <span class="doccomment">/// An implementor of `StoresServerSessions` that stores everything |
| /// in memory. If enforces a limit on the number of stored sessions |
| /// to bound memory usage. |
| </span><span class="kw">pub struct </span>ServerSessionMemoryCache { |
| cache: Mutex<collections::HashMap<Vec<u8>, Vec<u8>>>, |
| max_entries: usize, |
| } |
| |
| <span class="kw">impl </span>ServerSessionMemoryCache { |
| <span class="doccomment">/// Make a new ServerSessionMemoryCache. `size` is the maximum |
| /// number of stored sessions. |
| </span><span class="kw">pub fn </span>new(size: usize) -> Arc<ServerSessionMemoryCache> { |
| <span class="macro">debug_assert!</span>(size > <span class="number">0</span>); |
| Arc::new(ServerSessionMemoryCache { |
| cache: Mutex::new(collections::HashMap::new()), |
| max_entries: size, |
| }) |
| } |
| |
| <span class="kw">fn </span>limit_size(<span class="kw-2">&</span><span class="self">self</span>) { |
| <span class="kw">let </span><span class="kw-2">mut </span>cache = <span class="self">self</span>.cache.lock().unwrap(); |
| <span class="kw">while </span>cache.len() > <span class="self">self</span>.max_entries { |
| <span class="kw">let </span>k = cache.keys().next().unwrap().clone(); |
| cache.remove(<span class="kw-2">&</span>k); |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>server::StoresServerSessions <span class="kw">for </span>ServerSessionMemoryCache { |
| <span class="kw">fn </span>put(<span class="kw-2">&</span><span class="self">self</span>, key: Vec<u8>, value: Vec<u8>) -> bool { |
| <span class="self">self</span>.cache |
| .lock() |
| .unwrap() |
| .insert(key, value); |
| <span class="self">self</span>.limit_size(); |
| <span class="bool-val">true |
| </span>} |
| |
| <span class="kw">fn </span>get(<span class="kw-2">&</span><span class="self">self</span>, key: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Option</span><Vec<u8>> { |
| <span class="self">self</span>.cache |
| .lock() |
| .unwrap() |
| .get(key) |
| .cloned() |
| } |
| |
| <span class="kw">fn </span>take(<span class="kw-2">&</span><span class="self">self</span>, key: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Option</span><Vec<u8>> { |
| <span class="self">self</span>.cache.lock().unwrap().remove(key) |
| } |
| } |
| |
| <span class="doccomment">/// Something which never produces tickets. |
| </span><span class="kw">pub struct </span>NeverProducesTickets {} |
| |
| <span class="kw">impl </span>server::ProducesTickets <span class="kw">for </span>NeverProducesTickets { |
| <span class="kw">fn </span>enabled(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="bool-val">false |
| </span>} |
| <span class="kw">fn </span>get_lifetime(<span class="kw-2">&</span><span class="self">self</span>) -> u32 { |
| <span class="number">0 |
| </span>} |
| <span class="kw">fn </span>encrypt(<span class="kw-2">&</span><span class="self">self</span>, _bytes: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Option</span><Vec<u8>> { |
| <span class="prelude-val">None |
| </span>} |
| <span class="kw">fn </span>decrypt(<span class="kw-2">&</span><span class="self">self</span>, _bytes: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Option</span><Vec<u8>> { |
| <span class="prelude-val">None |
| </span>} |
| } |
| |
| <span class="doccomment">/// Something which never resolves a certificate. |
| </span><span class="kw">pub struct </span>FailResolveChain {} |
| |
| <span class="kw">impl </span>server::ResolvesServerCert <span class="kw">for </span>FailResolveChain { |
| <span class="kw">fn </span>resolve(<span class="kw-2">&</span><span class="self">self</span>, _client_hello: ClientHello) -> <span class="prelude-ty">Option</span><sign::CertifiedKey> { |
| <span class="prelude-val">None |
| </span>} |
| } |
| |
| <span class="doccomment">/// Something which always resolves to the same cert chain. |
| </span><span class="kw">pub struct </span>AlwaysResolvesChain(sign::CertifiedKey); |
| |
| <span class="kw">impl </span>AlwaysResolvesChain { |
| <span class="doccomment">/// Creates an `AlwaysResolvesChain`, auto-detecting the underlying private |
| /// key type and encoding. |
| </span><span class="kw">pub fn </span>new( |
| chain: Vec<key::Certificate>, |
| priv_key: <span class="kw-2">&</span>key::PrivateKey, |
| ) -> <span class="prelude-ty">Result</span><AlwaysResolvesChain, TLSError> { |
| <span class="kw">let </span>key = sign::any_supported_type(priv_key) |
| .map_err(|<span class="kw">_</span>| TLSError::General(<span class="string">"invalid private key"</span>.into()))<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(AlwaysResolvesChain(sign::CertifiedKey::new( |
| chain, |
| Arc::new(key), |
| ))) |
| } |
| |
| <span class="doccomment">/// Creates an `AlwaysResolvesChain`, auto-detecting the underlying private |
| /// key type and encoding. |
| /// |
| /// If non-empty, the given OCSP response and SCTs are attached. |
| </span><span class="kw">pub fn </span>new_with_extras( |
| chain: Vec<key::Certificate>, |
| priv_key: <span class="kw-2">&</span>key::PrivateKey, |
| ocsp: Vec<u8>, |
| scts: Vec<u8>, |
| ) -> <span class="prelude-ty">Result</span><AlwaysResolvesChain, TLSError> { |
| <span class="kw">let </span><span class="kw-2">mut </span>r = AlwaysResolvesChain::new(chain, priv_key)<span class="question-mark">?</span>; |
| <span class="kw">if </span>!ocsp.is_empty() { |
| r.<span class="number">0</span>.ocsp = <span class="prelude-val">Some</span>(ocsp); |
| } |
| <span class="kw">if </span>!scts.is_empty() { |
| r.<span class="number">0</span>.sct_list = <span class="prelude-val">Some</span>(scts); |
| } |
| <span class="prelude-val">Ok</span>(r) |
| } |
| } |
| |
| <span class="kw">impl </span>server::ResolvesServerCert <span class="kw">for </span>AlwaysResolvesChain { |
| <span class="kw">fn </span>resolve(<span class="kw-2">&</span><span class="self">self</span>, _client_hello: ClientHello) -> <span class="prelude-ty">Option</span><sign::CertifiedKey> { |
| <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="number">0</span>.clone()) |
| } |
| } |
| |
| <span class="doccomment">/// Something that resolves do different cert chains/keys based |
| /// on client-supplied server name (via SNI). |
| </span><span class="kw">pub struct </span>ResolvesServerCertUsingSNI { |
| by_name: collections::HashMap<String, sign::CertifiedKey>, |
| } |
| |
| <span class="kw">impl </span>ResolvesServerCertUsingSNI { |
| <span class="doccomment">/// Create a new and empty (ie, knows no certificates) resolver. |
| </span><span class="kw">pub fn </span>new() -> ResolvesServerCertUsingSNI { |
| ResolvesServerCertUsingSNI { |
| by_name: collections::HashMap::new(), |
| } |
| } |
| |
| <span class="doccomment">/// Add a new `sign::CertifiedKey` to be used for the given SNI `name`. |
| /// |
| /// This function fails if `name` is not a valid DNS name, or if |
| /// it's not valid for the supplied certificate, or if the certificate |
| /// chain is syntactically faulty. |
| </span><span class="kw">pub fn </span>add(<span class="kw-2">&mut </span><span class="self">self</span>, name: <span class="kw-2">&</span>str, ck: sign::CertifiedKey) -> <span class="prelude-ty">Result</span><(), TLSError> { |
| <span class="kw">let </span>checked_name = webpki::DNSNameRef::try_from_ascii_str(name) |
| .map_err(|<span class="kw">_</span>| TLSError::General(<span class="string">"Bad DNS name"</span>.into()))<span class="question-mark">?</span>; |
| |
| ck.cross_check_end_entity_cert(<span class="prelude-val">Some</span>(checked_name))<span class="question-mark">?</span>; |
| <span class="self">self</span>.by_name.insert(name.into(), ck); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">impl </span>server::ResolvesServerCert <span class="kw">for </span>ResolvesServerCertUsingSNI { |
| <span class="kw">fn </span>resolve(<span class="kw-2">&</span><span class="self">self</span>, client_hello: ClientHello) -> <span class="prelude-ty">Option</span><sign::CertifiedKey> { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(name) = client_hello.server_name() { |
| <span class="self">self</span>.by_name.get(name.into()).cloned() |
| } <span class="kw">else </span>{ |
| <span class="comment">// This kind of resolver requires SNI |
| </span><span class="prelude-val">None |
| </span>} |
| } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>test { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| <span class="kw">use </span><span class="kw">crate</span>::server::ProducesTickets; |
| <span class="kw">use </span><span class="kw">crate</span>::server::ResolvesServerCert; |
| <span class="kw">use </span><span class="kw">crate</span>::StoresServerSessions; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_noserversessionstorage_drops_put() { |
| <span class="kw">let </span>c = NoServerSessionStorage {}; |
| <span class="macro">assert_eq!</span>(c.put(<span class="macro">vec!</span>[<span class="number">0x01</span>], <span class="macro">vec!</span>[<span class="number">0x02</span>]), <span class="bool-val">false</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_noserversessionstorage_denies_gets() { |
| <span class="kw">let </span>c = NoServerSessionStorage {}; |
| c.put(<span class="macro">vec!</span>[<span class="number">0x01</span>], <span class="macro">vec!</span>[<span class="number">0x02</span>]); |
| <span class="macro">assert_eq!</span>(c.get(<span class="kw-2">&</span>[]), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(c.get(<span class="kw-2">&</span>[<span class="number">0x01</span>]), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(c.get(<span class="kw-2">&</span>[<span class="number">0x02</span>]), <span class="prelude-val">None</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_noserversessionstorage_denies_takes() { |
| <span class="kw">let </span>c = NoServerSessionStorage {}; |
| <span class="macro">assert_eq!</span>(c.take(<span class="kw-2">&</span>[]), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(c.take(<span class="kw-2">&</span>[<span class="number">0x01</span>]), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(c.take(<span class="kw-2">&</span>[<span class="number">0x02</span>]), <span class="prelude-val">None</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_serversessionmemorycache_accepts_put() { |
| <span class="kw">let </span>c = ServerSessionMemoryCache::new(<span class="number">4</span>); |
| <span class="macro">assert_eq!</span>(c.put(<span class="macro">vec!</span>[<span class="number">0x01</span>], <span class="macro">vec!</span>[<span class="number">0x02</span>]), <span class="bool-val">true</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_serversessionmemorycache_persists_put() { |
| <span class="kw">let </span>c = ServerSessionMemoryCache::new(<span class="number">4</span>); |
| <span class="macro">assert_eq!</span>(c.put(<span class="macro">vec!</span>[<span class="number">0x01</span>], <span class="macro">vec!</span>[<span class="number">0x02</span>]), <span class="bool-val">true</span>); |
| <span class="macro">assert_eq!</span>(c.get(<span class="kw-2">&</span>[<span class="number">0x01</span>]), <span class="prelude-val">Some</span>(<span class="macro">vec!</span>[<span class="number">0x02</span>])); |
| <span class="macro">assert_eq!</span>(c.get(<span class="kw-2">&</span>[<span class="number">0x01</span>]), <span class="prelude-val">Some</span>(<span class="macro">vec!</span>[<span class="number">0x02</span>])); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_serversessionmemorycache_overwrites_put() { |
| <span class="kw">let </span>c = ServerSessionMemoryCache::new(<span class="number">4</span>); |
| <span class="macro">assert_eq!</span>(c.put(<span class="macro">vec!</span>[<span class="number">0x01</span>], <span class="macro">vec!</span>[<span class="number">0x02</span>]), <span class="bool-val">true</span>); |
| <span class="macro">assert_eq!</span>(c.put(<span class="macro">vec!</span>[<span class="number">0x01</span>], <span class="macro">vec!</span>[<span class="number">0x04</span>]), <span class="bool-val">true</span>); |
| <span class="macro">assert_eq!</span>(c.get(<span class="kw-2">&</span>[<span class="number">0x01</span>]), <span class="prelude-val">Some</span>(<span class="macro">vec!</span>[<span class="number">0x04</span>])); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_serversessionmemorycache_drops_to_maintain_size_invariant() { |
| <span class="kw">let </span>c = ServerSessionMemoryCache::new(<span class="number">4</span>); |
| <span class="macro">assert_eq!</span>(c.put(<span class="macro">vec!</span>[<span class="number">0x01</span>], <span class="macro">vec!</span>[<span class="number">0x02</span>]), <span class="bool-val">true</span>); |
| <span class="macro">assert_eq!</span>(c.put(<span class="macro">vec!</span>[<span class="number">0x03</span>], <span class="macro">vec!</span>[<span class="number">0x04</span>]), <span class="bool-val">true</span>); |
| <span class="macro">assert_eq!</span>(c.put(<span class="macro">vec!</span>[<span class="number">0x05</span>], <span class="macro">vec!</span>[<span class="number">0x06</span>]), <span class="bool-val">true</span>); |
| <span class="macro">assert_eq!</span>(c.put(<span class="macro">vec!</span>[<span class="number">0x07</span>], <span class="macro">vec!</span>[<span class="number">0x08</span>]), <span class="bool-val">true</span>); |
| <span class="macro">assert_eq!</span>(c.put(<span class="macro">vec!</span>[<span class="number">0x09</span>], <span class="macro">vec!</span>[<span class="number">0x0a</span>]), <span class="bool-val">true</span>); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>count = <span class="number">0</span>; |
| <span class="kw">if </span>c.get(<span class="kw-2">&</span>[<span class="number">0x01</span>]).is_some() { |
| count += <span class="number">1</span>; |
| } |
| <span class="kw">if </span>c.get(<span class="kw-2">&</span>[<span class="number">0x03</span>]).is_some() { |
| count += <span class="number">1</span>; |
| } |
| <span class="kw">if </span>c.get(<span class="kw-2">&</span>[<span class="number">0x05</span>]).is_some() { |
| count += <span class="number">1</span>; |
| } |
| <span class="kw">if </span>c.get(<span class="kw-2">&</span>[<span class="number">0x07</span>]).is_some() { |
| count += <span class="number">1</span>; |
| } |
| <span class="kw">if </span>c.get(<span class="kw-2">&</span>[<span class="number">0x09</span>]).is_some() { |
| count += <span class="number">1</span>; |
| } |
| |
| <span class="macro">assert_eq!</span>(count, <span class="number">4</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_neverproducestickets_does_nothing() { |
| <span class="kw">let </span>npt = NeverProducesTickets {}; |
| <span class="macro">assert_eq!</span>(<span class="bool-val">false</span>, npt.enabled()); |
| <span class="macro">assert_eq!</span>(<span class="number">0</span>, npt.get_lifetime()); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, npt.encrypt(<span class="kw-2">&</span>[])); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, npt.decrypt(<span class="kw-2">&</span>[])); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_failresolvechain_does_nothing() { |
| <span class="kw">let </span>frc = FailResolveChain {}; |
| <span class="macro">assert!</span>( |
| frc.resolve(ClientHello::new(<span class="prelude-val">None</span>, <span class="kw-2">&</span>[], <span class="prelude-val">None</span>)) |
| .is_none() |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_resolvesservercertusingsni_requires_sni() { |
| <span class="kw">let </span>rscsni = ResolvesServerCertUsingSNI::new(); |
| <span class="macro">assert!</span>( |
| rscsni |
| .resolve(ClientHello::new(<span class="prelude-val">None</span>, <span class="kw-2">&</span>[], <span class="prelude-val">None</span>)) |
| .is_none() |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_resolvesservercertusingsni_handles_unknown_name() { |
| <span class="kw">let </span>rscsni = ResolvesServerCertUsingSNI::new(); |
| <span class="kw">let </span>name = webpki::DNSNameRef::try_from_ascii_str(<span class="string">"hello.com"</span>).unwrap(); |
| <span class="macro">assert!</span>( |
| rscsni |
| .resolve(ClientHello::new(<span class="prelude-val">Some</span>(name), <span class="kw-2">&</span>[], <span class="prelude-val">None</span>)) |
| .is_none() |
| ); |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="rustls" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |