| <!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/msgs/persist.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>persist.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>::msgs::base::{PayloadU8, PayloadU16}; |
| <span class="kw">use </span><span class="kw">crate</span>::msgs::codec::{Codec, Reader}; |
| <span class="kw">use </span><span class="kw">crate</span>::msgs::enums::{CipherSuite, ProtocolVersion}; |
| <span class="kw">use </span><span class="kw">crate</span>::msgs::handshake::CertificatePayload; |
| <span class="kw">use </span><span class="kw">crate</span>::msgs::handshake::SessionID; |
| |
| <span class="kw">use </span>webpki; |
| |
| <span class="kw">use </span>std::cmp; |
| <span class="kw">use </span>std::mem; |
| |
| <span class="comment">// These are the keys and values we store in session storage. |
| |
| // --- Client types --- |
| </span><span class="doccomment">/// Keys for session resumption and tickets. |
| /// Matching value is a `ClientSessionValue`. |
| </span><span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>ClientSessionKey { |
| kind: <span class="kw-2">&</span><span class="lifetime">'static </span>[u8], |
| dns_name: PayloadU8, |
| } |
| |
| <span class="kw">impl </span>Codec <span class="kw">for </span>ClientSessionKey { |
| <span class="kw">fn </span>encode(<span class="kw-2">&</span><span class="self">self</span>, bytes: <span class="kw-2">&mut </span>Vec<u8>) { |
| bytes.extend_from_slice(<span class="self">self</span>.kind); |
| <span class="self">self</span>.dns_name.encode(bytes); |
| } |
| |
| <span class="comment">// Don't need to read these. |
| </span><span class="kw">fn </span>read(_r: <span class="kw-2">&mut </span>Reader) -> <span class="prelude-ty">Option</span><ClientSessionKey> { |
| <span class="prelude-val">None |
| </span>} |
| } |
| |
| <span class="kw">impl </span>ClientSessionKey { |
| <span class="kw">pub fn </span>session_for_dns_name(dns_name: webpki::DNSNameRef) -> ClientSessionKey { |
| <span class="kw">let </span>dns_name_str: <span class="kw-2">&</span>str = dns_name.into(); |
| ClientSessionKey { |
| kind: <span class="string">b"session"</span>, |
| dns_name: PayloadU8::new(dns_name_str.as_bytes().to_vec()), |
| } |
| } |
| |
| <span class="kw">pub fn </span>hint_for_dns_name(dns_name: webpki::DNSNameRef) -> ClientSessionKey { |
| <span class="kw">let </span>dns_name_str: <span class="kw-2">&</span>str = dns_name.into(); |
| ClientSessionKey { |
| kind: <span class="string">b"kx-hint"</span>, |
| dns_name: PayloadU8::new(dns_name_str.as_bytes().to_vec()), |
| } |
| } |
| } |
| |
| <span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>ClientSessionValue { |
| <span class="kw">pub </span>version: ProtocolVersion, |
| <span class="kw">pub </span>cipher_suite: CipherSuite, |
| <span class="kw">pub </span>session_id: SessionID, |
| <span class="kw">pub </span>ticket: PayloadU16, |
| <span class="kw">pub </span>master_secret: PayloadU8, |
| <span class="kw">pub </span>epoch: u64, |
| <span class="kw">pub </span>lifetime: u32, |
| <span class="kw">pub </span>age_add: u32, |
| <span class="kw">pub </span>extended_ms: bool, |
| <span class="kw">pub </span>max_early_data_size: u32, |
| <span class="kw">pub </span>server_cert_chain: CertificatePayload, |
| } |
| |
| <span class="kw">impl </span>Codec <span class="kw">for </span>ClientSessionValue { |
| <span class="kw">fn </span>encode(<span class="kw-2">&</span><span class="self">self</span>, bytes: <span class="kw-2">&mut </span>Vec<u8>) { |
| <span class="self">self</span>.version.encode(bytes); |
| <span class="self">self</span>.cipher_suite.encode(bytes); |
| <span class="self">self</span>.session_id.encode(bytes); |
| <span class="self">self</span>.ticket.encode(bytes); |
| <span class="self">self</span>.master_secret.encode(bytes); |
| <span class="self">self</span>.epoch.encode(bytes); |
| <span class="self">self</span>.lifetime.encode(bytes); |
| <span class="self">self</span>.age_add.encode(bytes); |
| (<span class="kw">if </span><span class="self">self</span>.extended_ms { <span class="number">1u8 </span>} <span class="kw">else </span>{ <span class="number">0u8 </span>}).encode(bytes); |
| <span class="self">self</span>.max_early_data_size.encode(bytes); |
| <span class="self">self</span>.server_cert_chain.encode(bytes); |
| } |
| |
| <span class="kw">fn </span>read(r: <span class="kw-2">&mut </span>Reader) -> <span class="prelude-ty">Option</span><ClientSessionValue> { |
| <span class="kw">let </span>v = ProtocolVersion::read(r)<span class="question-mark">?</span>; |
| <span class="kw">let </span>cs = CipherSuite::read(r)<span class="question-mark">?</span>; |
| <span class="kw">let </span>sid = SessionID::read(r)<span class="question-mark">?</span>; |
| <span class="kw">let </span>ticket = PayloadU16::read(r)<span class="question-mark">?</span>; |
| <span class="kw">let </span>ms = PayloadU8::read(r)<span class="question-mark">?</span>; |
| <span class="kw">let </span>epoch = u64::read(r)<span class="question-mark">?</span>; |
| <span class="kw">let </span>lifetime = u32::read(r)<span class="question-mark">?</span>; |
| <span class="kw">let </span>age_add = u32::read(r)<span class="question-mark">?</span>; |
| <span class="kw">let </span>extended_ms = u8::read(r)<span class="question-mark">?</span>; |
| <span class="kw">let </span>max_early_data_size = u32::read(r)<span class="question-mark">?</span>; |
| <span class="kw">let </span>server_cert_chain = CertificatePayload::read(r)<span class="question-mark">?</span>; |
| |
| <span class="prelude-val">Some</span>(ClientSessionValue { |
| version: v, |
| cipher_suite: cs, |
| session_id: sid, |
| ticket, |
| master_secret: ms, |
| epoch, |
| lifetime, |
| age_add, |
| extended_ms: extended_ms == <span class="number">1u8</span>, |
| max_early_data_size, |
| server_cert_chain, |
| }) |
| } |
| } |
| |
| <span class="kw">static </span>MAX_TICKET_LIFETIME: u32 = <span class="number">7 </span>* <span class="number">24 </span>* <span class="number">60 </span>* <span class="number">60</span>; |
| |
| <span class="kw">impl </span>ClientSessionValue { |
| <span class="kw">pub fn </span>new( |
| v: ProtocolVersion, |
| cs: CipherSuite, |
| sessid: <span class="kw-2">&</span>SessionID, |
| ticket: Vec<u8>, |
| ms: Vec<u8>, |
| server_cert_chain: <span class="kw-2">&</span>CertificatePayload, |
| ) -> ClientSessionValue { |
| ClientSessionValue { |
| version: v, |
| cipher_suite: cs, |
| session_id: <span class="kw-2">*</span>sessid, |
| ticket: PayloadU16::new(ticket), |
| master_secret: PayloadU8::new(ms), |
| epoch: <span class="number">0</span>, |
| lifetime: <span class="number">0</span>, |
| age_add: <span class="number">0</span>, |
| extended_ms: <span class="bool-val">false</span>, |
| max_early_data_size: <span class="number">0</span>, |
| server_cert_chain: server_cert_chain.clone(), |
| } |
| } |
| |
| <span class="kw">pub fn </span>set_extended_ms_used(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="self">self</span>.extended_ms = <span class="bool-val">true</span>; |
| } |
| |
| <span class="kw">pub fn </span>set_times(<span class="kw-2">&mut </span><span class="self">self</span>, receipt_time_secs: u64, lifetime_secs: u32, age_add: u32) { |
| <span class="self">self</span>.epoch = receipt_time_secs; |
| <span class="self">self</span>.lifetime = cmp::min(lifetime_secs, MAX_TICKET_LIFETIME); |
| <span class="self">self</span>.age_add = age_add; |
| } |
| |
| <span class="kw">pub fn </span>has_expired(<span class="kw-2">&</span><span class="self">self</span>, time_now: u64) -> bool { |
| <span class="self">self</span>.lifetime != <span class="number">0 </span>&& <span class="self">self</span>.epoch + u64::from(<span class="self">self</span>.lifetime) < time_now |
| } |
| |
| <span class="kw">pub fn </span>get_obfuscated_ticket_age(<span class="kw-2">&</span><span class="self">self</span>, time_now: u64) -> u32 { |
| <span class="kw">let </span>age_secs = time_now.saturating_sub(<span class="self">self</span>.epoch); |
| <span class="kw">let </span>age_millis = age_secs <span class="kw">as </span>u32 * <span class="number">1000</span>; |
| age_millis.wrapping_add(<span class="self">self</span>.age_add) |
| } |
| |
| <span class="kw">pub fn </span>take_ticket(<span class="kw-2">&mut </span><span class="self">self</span>) -> Vec<u8> { |
| <span class="kw">let </span>new_ticket = PayloadU16::new(Vec::new()); |
| <span class="kw">let </span>old_ticket = mem::replace(<span class="kw-2">&mut </span><span class="self">self</span>.ticket, new_ticket); |
| old_ticket.<span class="number">0 |
| </span>} |
| |
| <span class="kw">pub fn </span>set_max_early_data_size(<span class="kw-2">&mut </span><span class="self">self</span>, sz: u32) { |
| <span class="self">self</span>.max_early_data_size = sz; |
| } |
| } |
| |
| <span class="comment">// --- Server types --- |
| </span><span class="kw">pub type </span>ServerSessionKey = SessionID; |
| |
| <span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>ServerSessionValue { |
| <span class="kw">pub </span>sni: <span class="prelude-ty">Option</span><webpki::DNSName>, |
| <span class="kw">pub </span>version: ProtocolVersion, |
| <span class="kw">pub </span>cipher_suite: CipherSuite, |
| <span class="kw">pub </span>master_secret: PayloadU8, |
| <span class="kw">pub </span>extended_ms: bool, |
| <span class="kw">pub </span>client_cert_chain: <span class="prelude-ty">Option</span><CertificatePayload>, |
| <span class="kw">pub </span>alpn: <span class="prelude-ty">Option</span><PayloadU8>, |
| <span class="kw">pub </span>application_data: PayloadU16, |
| } |
| |
| <span class="kw">impl </span>Codec <span class="kw">for </span>ServerSessionValue { |
| <span class="kw">fn </span>encode(<span class="kw-2">&</span><span class="self">self</span>, bytes: <span class="kw-2">&mut </span>Vec<u8>) { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">ref </span>sni) = <span class="self">self</span>.sni { |
| <span class="number">1u8</span>.encode(bytes); |
| <span class="kw">let </span>sni_bytes: <span class="kw-2">&</span>str = sni.as_ref().into(); |
| PayloadU8::new(Vec::from(sni_bytes)).encode(bytes); |
| } <span class="kw">else </span>{ |
| <span class="number">0u8</span>.encode(bytes); |
| } |
| <span class="self">self</span>.version.encode(bytes); |
| <span class="self">self</span>.cipher_suite.encode(bytes); |
| <span class="self">self</span>.master_secret.encode(bytes); |
| (<span class="kw">if </span><span class="self">self</span>.extended_ms { <span class="number">1u8 </span>} <span class="kw">else </span>{ <span class="number">0u8 </span>}).encode(bytes); |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">ref </span>chain) = <span class="self">self</span>.client_cert_chain { |
| <span class="number">1u8</span>.encode(bytes); |
| chain.encode(bytes); |
| } <span class="kw">else </span>{ |
| <span class="number">0u8</span>.encode(bytes); |
| } |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">ref </span>alpn) = <span class="self">self</span>.alpn { |
| <span class="number">1u8</span>.encode(bytes); |
| alpn.encode(bytes); |
| } <span class="kw">else </span>{ |
| <span class="number">0u8</span>.encode(bytes); |
| } |
| <span class="self">self</span>.application_data.encode(bytes); |
| } |
| |
| <span class="kw">fn </span>read(r: <span class="kw-2">&mut </span>Reader) -> <span class="prelude-ty">Option</span><ServerSessionValue> { |
| <span class="kw">let </span>has_sni = u8::read(r)<span class="question-mark">?</span>; |
| <span class="kw">let </span>sni = <span class="kw">if </span>has_sni == <span class="number">1 </span>{ |
| <span class="kw">let </span>dns_name = PayloadU8::read(r)<span class="question-mark">?</span>; |
| <span class="kw">let </span>dns_name = webpki::DNSNameRef::try_from_ascii(<span class="kw-2">&</span>dns_name.<span class="number">0</span>).ok()<span class="question-mark">?</span>; |
| <span class="prelude-val">Some</span>(dns_name.into()) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>}; |
| <span class="kw">let </span>v = ProtocolVersion::read(r)<span class="question-mark">?</span>; |
| <span class="kw">let </span>cs = CipherSuite::read(r)<span class="question-mark">?</span>; |
| <span class="kw">let </span>ms = PayloadU8::read(r)<span class="question-mark">?</span>; |
| <span class="kw">let </span>ems = u8::read(r)<span class="question-mark">?</span>; |
| <span class="kw">let </span>has_ccert = u8::read(r)<span class="question-mark">? </span>== <span class="number">1</span>; |
| <span class="kw">let </span>ccert = <span class="kw">if </span>has_ccert { |
| <span class="prelude-val">Some</span>(CertificatePayload::read(r)<span class="question-mark">?</span>) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>}; |
| <span class="kw">let </span>has_alpn = u8::read(r)<span class="question-mark">? </span>== <span class="number">1</span>; |
| <span class="kw">let </span>alpn = <span class="kw">if </span>has_alpn { |
| <span class="prelude-val">Some</span>(PayloadU8::read(r)<span class="question-mark">?</span>) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>}; |
| <span class="kw">let </span>application_data = PayloadU16::read(r)<span class="question-mark">?</span>; |
| |
| <span class="prelude-val">Some</span>(ServerSessionValue { |
| sni, |
| version: v, |
| cipher_suite: cs, |
| master_secret: ms, |
| extended_ms: ems == <span class="number">1u8</span>, |
| client_cert_chain: ccert, |
| alpn, |
| application_data, |
| }) |
| } |
| } |
| |
| <span class="kw">impl </span>ServerSessionValue { |
| <span class="kw">pub fn </span>new( |
| sni: <span class="prelude-ty">Option</span><<span class="kw-2">&</span>webpki::DNSName>, |
| v: ProtocolVersion, |
| cs: CipherSuite, |
| ms: Vec<u8>, |
| cert_chain: <span class="kw-2">&</span><span class="prelude-ty">Option</span><CertificatePayload>, |
| alpn: <span class="prelude-ty">Option</span><Vec<u8>>, |
| application_data: Vec<u8>, |
| ) -> ServerSessionValue { |
| ServerSessionValue { |
| sni: sni.cloned(), |
| version: v, |
| cipher_suite: cs, |
| master_secret: PayloadU8::new(ms), |
| extended_ms: <span class="bool-val">false</span>, |
| client_cert_chain: cert_chain.clone(), |
| alpn: alpn.map(PayloadU8::new), |
| application_data: PayloadU16::new(application_data), |
| } |
| } |
| |
| <span class="kw">pub fn </span>set_extended_ms_used(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="self">self</span>.extended_ms = <span class="bool-val">true</span>; |
| } |
| } |
| </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> |