| <!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/check.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>check.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="attribute">#[cfg(feature = <span class="string">"logging"</span>)] |
| </span><span class="kw">use </span><span class="kw">crate</span>::log::warn; |
| <span class="kw">use </span><span class="kw">crate</span>::msgs::enums::{ContentType, HandshakeType}; |
| <span class="kw">use </span><span class="kw">crate</span>::msgs::message::{Message, MessagePayload}; |
| |
| <span class="doccomment">/// For a Message $m, and a HandshakePayload enum member $payload_type, |
| /// return Ok(payload) if $m is both a handshake message and one that |
| /// has the given $payload_type. If not, return Err(TLSError) quoting |
| /// $handshake_type as the expected handshake type. |
| </span><span class="macro">macro_rules! </span>require_handshake_msg( |
| ( <span class="macro-nonterminal">$m</span>:expr, <span class="macro-nonterminal">$handshake_type</span>:path, <span class="macro-nonterminal">$payload_type</span>:path ) => ( |
| <span class="kw">match </span><span class="macro-nonterminal">$m</span>.payload { |
| MessagePayload::Handshake(<span class="kw-2">ref </span>hsp) => <span class="kw">match </span>hsp.payload { |
| <span class="macro-nonterminal">$payload_type</span>(<span class="kw-2">ref </span>hm) => <span class="prelude-val">Ok</span>(hm), |
| <span class="kw">_ </span>=> <span class="prelude-val">Err</span>(TLSError::InappropriateHandshakeMessage { |
| expect_types: <span class="macro">vec!</span>[ <span class="macro-nonterminal">$handshake_type </span>], |
| got_type: hsp.typ}) |
| } |
| <span class="kw">_ </span>=> <span class="prelude-val">Err</span>(TLSError::InappropriateMessage { |
| expect_types: <span class="macro">vec!</span>[ ContentType::Handshake ], |
| got_type: <span class="macro-nonterminal">$m</span>.typ}) |
| } |
| ) |
| ); |
| |
| <span class="doccomment">/// Like require_handshake_msg, but moves the payload out of $m. |
| </span><span class="macro">macro_rules! </span>require_handshake_msg_mut( |
| ( <span class="macro-nonterminal">$m</span>:expr, <span class="macro-nonterminal">$handshake_type</span>:path, <span class="macro-nonterminal">$payload_type</span>:path ) => ( |
| <span class="kw">match </span><span class="macro-nonterminal">$m</span>.payload { |
| MessagePayload::Handshake(hsp) => <span class="kw">match </span>hsp.payload { |
| <span class="macro-nonterminal">$payload_type</span>(hm) => <span class="prelude-val">Ok</span>(hm), |
| <span class="kw">_ </span>=> <span class="prelude-val">Err</span>(TLSError::InappropriateHandshakeMessage { |
| expect_types: <span class="macro">vec!</span>[ <span class="macro-nonterminal">$handshake_type </span>], |
| got_type: hsp.typ}) |
| } |
| <span class="kw">_ </span>=> <span class="prelude-val">Err</span>(TLSError::InappropriateMessage { |
| expect_types: <span class="macro">vec!</span>[ ContentType::Handshake ], |
| got_type: <span class="macro-nonterminal">$m</span>.typ}) |
| } |
| ) |
| ); |
| |
| <span class="doccomment">/// Validate the message `m`: return an error if: |
| /// |
| /// - the type of m does not appear in `content_types`. |
| /// - if m is a handshake message, the handshake message type does |
| /// not appear in `handshake_types`. |
| </span><span class="kw">pub fn </span>check_message( |
| m: <span class="kw-2">&</span>Message, |
| content_types: <span class="kw-2">&</span>[ContentType], |
| handshake_types: <span class="kw-2">&</span>[HandshakeType], |
| ) -> <span class="prelude-ty">Result</span><(), TLSError> { |
| <span class="kw">if </span>!content_types.contains(<span class="kw-2">&</span>m.typ) { |
| <span class="macro">warn!</span>( |
| <span class="string">"Received a {:?} message while expecting {:?}"</span>, |
| m.typ, content_types |
| ); |
| <span class="kw">return </span><span class="prelude-val">Err</span>(TLSError::InappropriateMessage { |
| expect_types: content_types.to_vec(), |
| got_type: m.typ, |
| }); |
| } |
| |
| <span class="kw">if let </span>MessagePayload::Handshake(<span class="kw-2">ref </span>hsp) = m.payload { |
| <span class="kw">if </span>!handshake_types.is_empty() && !handshake_types.contains(<span class="kw-2">&</span>hsp.typ) { |
| <span class="macro">warn!</span>( |
| <span class="string">"Received a {:?} handshake message while expecting {:?}"</span>, |
| hsp.typ, handshake_types |
| ); |
| <span class="kw">return </span><span class="prelude-val">Err</span>(TLSError::InappropriateHandshakeMessage { |
| expect_types: handshake_types.to_vec(), |
| got_type: hsp.typ, |
| }); |
| } |
| } |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| </code></pre></div> |
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