| <!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/webpki-0.21.4/src/name.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>name.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="../../webpki/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="../../webpki/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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| <span id="1078">1078</span> |
| <span id="1079">1079</span> |
| <span id="1080">1080</span> |
| <span id="1081">1081</span> |
| <span id="1082">1082</span> |
| <span id="1083">1083</span> |
| <span id="1084">1084</span> |
| <span id="1085">1085</span> |
| <span id="1086">1086</span> |
| <span id="1087">1087</span> |
| <span id="1088">1088</span> |
| <span id="1089">1089</span> |
| <span id="1090">1090</span> |
| <span id="1091">1091</span> |
| <span id="1092">1092</span> |
| <span id="1093">1093</span> |
| <span id="1094">1094</span> |
| <span id="1095">1095</span> |
| <span id="1096">1096</span> |
| <span id="1097">1097</span> |
| <span id="1098">1098</span> |
| <span id="1099">1099</span> |
| <span id="1100">1100</span> |
| <span id="1101">1101</span> |
| <span id="1102">1102</span> |
| <span id="1103">1103</span> |
| <span id="1104">1104</span> |
| <span id="1105">1105</span> |
| <span id="1106">1106</span> |
| <span id="1107">1107</span> |
| <span id="1108">1108</span> |
| <span id="1109">1109</span> |
| </pre><pre class="rust"><code><span class="comment">// Copyright 2015 Brian Smith. |
| // |
| // Permission to use, copy, modify, and/or distribute this software for any |
| // purpose with or without fee is hereby granted, provided that the above |
| // copyright notice and this permission notice appear in all copies. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES |
| // WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| // MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR |
| // ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| // WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| // ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| // OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| |
| </span><span class="kw">use crate</span>::{ |
| cert::{Cert, EndEntityOrCA}, |
| der, Error, |
| }; |
| <span class="kw">use </span>core; |
| |
| <span class="doccomment">/// A DNS Name suitable for use in the TLS Server Name Indication (SNI) |
| /// extension and/or for use as the reference hostname for which to verify a |
| /// certificate. |
| /// |
| /// A `DNSName` is guaranteed to be syntactically valid. The validity rules are |
| /// specified in [RFC 5280 Section 7.2], except that underscores are also |
| /// allowed. |
| /// |
| /// `DNSName` stores a copy of the input it was constructed from in a `String` |
| /// and so it is only available when the `std` default feature is enabled. |
| /// |
| /// `Eq`, `PartialEq`, etc. are not implemented because name comparison |
| /// frequently should be done case-insensitively and/or with other caveats that |
| /// depend on the specific circumstances in which the comparison is done. |
| /// |
| /// [RFC 5280 Section 7.2]: https://tools.ietf.org/html/rfc5280#section-7.2 |
| </span><span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| #[derive(Clone, Debug, Eq, PartialEq, Hash)] |
| </span><span class="kw">pub struct </span>DNSName(String); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">impl </span>DNSName { |
| <span class="doccomment">/// Returns a `DNSNameRef` that refers to this `DNSName`. |
| </span><span class="kw">pub fn </span>as_ref(<span class="kw-2">&</span><span class="self">self</span>) -> DNSNameRef { DNSNameRef(<span class="self">self</span>.<span class="number">0</span>.as_bytes()) } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">impl </span>AsRef<str> <span class="kw">for </span>DNSName { |
| <span class="kw">fn </span>as_ref(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>str { <span class="self">self</span>.<span class="number">0</span>.as_ref() } |
| } |
| |
| <span class="comment">// Deprecated |
| </span><span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">impl </span>From<DNSNameRef<<span class="lifetime">'_</span>>> <span class="kw">for </span>DNSName { |
| <span class="kw">fn </span>from(dns_name: DNSNameRef) -> <span class="self">Self </span>{ dns_name.to_owned() } |
| } |
| |
| <span class="doccomment">/// A reference to a DNS Name suitable for use in the TLS Server Name Indication |
| /// (SNI) extension and/or for use as the reference hostname for which to verify |
| /// a certificate. |
| /// |
| /// A `DNSNameRef` is guaranteed to be syntactically valid. The validity rules |
| /// are specified in [RFC 5280 Section 7.2], except that underscores are also |
| /// allowed. |
| /// |
| /// `Eq`, `PartialEq`, etc. are not implemented because name comparison |
| /// frequently should be done case-insensitively and/or with other caveats that |
| /// depend on the specific circumstances in which the comparison is done. |
| /// |
| /// [RFC 5280 Section 7.2]: https://tools.ietf.org/html/rfc5280#section-7.2 |
| </span><span class="attribute">#[derive(Clone, Copy)] |
| </span><span class="kw">pub struct </span>DNSNameRef<<span class="lifetime">'a</span>>(<span class="kw-2">&</span><span class="lifetime">'a </span>[u8]); |
| |
| <span class="doccomment">/// An error indicating that a `DNSNameRef` could not built because the input |
| /// is not a syntactically-valid DNS Name. |
| </span><span class="attribute">#[derive(Clone, Copy, Debug, Eq, PartialEq)] |
| </span><span class="kw">pub struct </span>InvalidDNSNameError; |
| |
| <span class="kw">impl </span>core::fmt::Display <span class="kw">for </span>InvalidDNSNameError { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>core::fmt::Formatter) -> core::fmt::Result { <span class="macro">write!</span>(f, <span class="string">"{:?}"</span>, <span class="self">self</span>) } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">impl </span>::std::error::Error <span class="kw">for </span>InvalidDNSNameError {} |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> DNSNameRef<<span class="lifetime">'a</span>> { |
| <span class="doccomment">/// Constructs a `DNSNameRef` from the given input if the input is a |
| /// syntactically-valid DNS name. |
| </span><span class="kw">pub fn </span>try_from_ascii(dns_name: <span class="kw-2">&</span><span class="lifetime">'a </span>[u8]) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, InvalidDNSNameError> { |
| <span class="kw">if </span>!is_valid_reference_dns_id(untrusted::Input::from(dns_name)) { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(InvalidDNSNameError); |
| } |
| |
| <span class="prelude-val">Ok</span>(<span class="self">Self</span>(dns_name)) |
| } |
| |
| <span class="doccomment">/// Constructs a `DNSNameRef` from the given input if the input is a |
| /// syntactically-valid DNS name. |
| </span><span class="kw">pub fn </span>try_from_ascii_str(dns_name: <span class="kw-2">&</span><span class="lifetime">'a </span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, InvalidDNSNameError> { |
| <span class="self">Self</span>::try_from_ascii(dns_name.as_bytes()) |
| } |
| |
| <span class="doccomment">/// Constructs a `DNSName` from this `DNSNameRef` |
| </span><span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">pub fn </span>to_owned(<span class="kw-2">&</span><span class="self">self</span>) -> DNSName { |
| <span class="comment">// DNSNameRef is already guaranteed to be valid ASCII, which is a |
| // subset of UTF-8. |
| </span><span class="kw">let </span>s: <span class="kw-2">&</span>str = <span class="self">self</span>.clone().into(); |
| DNSName(s.to_ascii_lowercase()) |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">impl </span>core::fmt::Debug <span class="kw">for </span>DNSNameRef<<span class="lifetime">'_</span>> { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>core::fmt::Formatter) -> <span class="prelude-ty">Result</span><(), core::fmt::Error> { |
| <span class="kw">let </span>lowercase = <span class="self">self</span>.clone().to_owned(); |
| f.debug_tuple(<span class="string">"DNSNameRef"</span>).field(<span class="kw-2">&</span>lowercase.<span class="number">0</span>).finish() |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> From<DNSNameRef<<span class="lifetime">'a</span>>> <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span>str { |
| <span class="kw">fn </span>from(DNSNameRef(d): DNSNameRef<<span class="lifetime">'a</span>>) -> <span class="self">Self </span>{ |
| <span class="comment">// The unwrap won't fail because DNSNameRefs are guaranteed to be ASCII |
| // and ASCII is a subset of UTF-8. |
| </span>core::str::from_utf8(d).unwrap() |
| } |
| } |
| |
| <span class="kw">pub fn </span>verify_cert_dns_name( |
| cert: <span class="kw-2">&</span><span class="kw">super</span>::EndEntityCert, DNSNameRef(dns_name): DNSNameRef, |
| ) -> <span class="prelude-ty">Result</span><(), Error> { |
| <span class="kw">let </span>cert = <span class="kw-2">&</span>cert.inner; |
| <span class="kw">let </span>dns_name = untrusted::Input::from(dns_name); |
| iterate_names( |
| cert.subject, |
| cert.subject_alt_name, |
| <span class="prelude-val">Err</span>(Error::CertNotValidForName), |
| <span class="kw-2">&</span>|name| { |
| <span class="kw">match </span>name { |
| GeneralName::DNSName(presented_id) => |
| <span class="kw">match </span>presented_dns_id_matches_reference_dns_id(presented_id, dns_name) { |
| <span class="prelude-val">Some</span>(<span class="bool-val">true</span>) => { |
| <span class="kw">return </span>NameIteration::Stop(<span class="prelude-val">Ok</span>(())); |
| }, |
| <span class="prelude-val">Some</span>(<span class="bool-val">false</span>) => (), |
| <span class="prelude-val">None </span>=> { |
| <span class="kw">return </span>NameIteration::Stop(<span class="prelude-val">Err</span>(Error::BadDER)); |
| }, |
| }, |
| <span class="kw">_ </span>=> (), |
| } |
| NameIteration::KeepGoing |
| }, |
| ) |
| } |
| |
| <span class="comment">// https://tools.ietf.org/html/rfc5280#section-4.2.1.10 |
| </span><span class="kw">pub fn </span>check_name_constraints( |
| input: <span class="prelude-ty">Option</span><<span class="kw-2">&mut </span>untrusted::Reader>, subordinate_certs: <span class="kw-2">&</span>Cert, |
| ) -> <span class="prelude-ty">Result</span><(), Error> { |
| <span class="kw">let </span>input = <span class="kw">match </span>input { |
| <span class="prelude-val">Some</span>(input) => input, |
| <span class="prelude-val">None </span>=> { |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(()); |
| }, |
| }; |
| |
| <span class="kw">fn </span>parse_subtrees<<span class="lifetime">'b</span>>( |
| inner: <span class="kw-2">&mut </span>untrusted::Reader<<span class="lifetime">'b</span>>, subtrees_tag: der::Tag, |
| ) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><untrusted::Input<<span class="lifetime">'b</span>>>, Error> { |
| <span class="kw">if </span>!inner.peek(subtrees_tag <span class="kw">as </span>u8) { |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>); |
| } |
| <span class="kw">let </span>subtrees = der::nested(inner, subtrees_tag, Error::BadDER, |tagged| { |
| der::expect_tag_and_get_value(tagged, der::Tag::Sequence) |
| })<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(subtrees)) |
| } |
| |
| <span class="kw">let </span>permitted_subtrees = parse_subtrees(input, der::Tag::ContextSpecificConstructed0)<span class="question-mark">?</span>; |
| <span class="kw">let </span>excluded_subtrees = parse_subtrees(input, der::Tag::ContextSpecificConstructed1)<span class="question-mark">?</span>; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>child = subordinate_certs; |
| <span class="kw">loop </span>{ |
| iterate_names(child.subject, child.subject_alt_name, <span class="prelude-val">Ok</span>(()), <span class="kw-2">&</span>|name| { |
| check_presented_id_conforms_to_constraints(name, permitted_subtrees, excluded_subtrees) |
| })<span class="question-mark">?</span>; |
| |
| child = <span class="kw">match </span>child.ee_or_ca { |
| EndEntityOrCA::CA(child_cert) => child_cert, |
| EndEntityOrCA::EndEntity => { |
| <span class="kw">break</span>; |
| }, |
| }; |
| } |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>check_presented_id_conforms_to_constraints( |
| name: GeneralName, permitted_subtrees: <span class="prelude-ty">Option</span><untrusted::Input>, |
| excluded_subtrees: <span class="prelude-ty">Option</span><untrusted::Input>, |
| ) -> NameIteration { |
| <span class="kw">match </span>check_presented_id_conforms_to_constraints_in_subtree( |
| name, |
| Subtrees::PermittedSubtrees, |
| permitted_subtrees, |
| ) { |
| stop @ NameIteration::Stop(..) => { |
| <span class="kw">return </span>stop; |
| }, |
| NameIteration::KeepGoing => (), |
| }; |
| |
| check_presented_id_conforms_to_constraints_in_subtree( |
| name, |
| Subtrees::ExcludedSubtrees, |
| excluded_subtrees, |
| ) |
| } |
| |
| <span class="attribute">#[derive(Clone, Copy)] |
| </span><span class="kw">enum </span>Subtrees { |
| PermittedSubtrees, |
| ExcludedSubtrees, |
| } |
| |
| <span class="kw">fn </span>check_presented_id_conforms_to_constraints_in_subtree( |
| name: GeneralName, subtrees: Subtrees, constraints: <span class="prelude-ty">Option</span><untrusted::Input>, |
| ) -> NameIteration { |
| <span class="kw">let </span><span class="kw-2">mut </span>constraints = <span class="kw">match </span>constraints { |
| <span class="prelude-val">Some</span>(constraints) => untrusted::Reader::new(constraints), |
| <span class="prelude-val">None </span>=> { |
| <span class="kw">return </span>NameIteration::KeepGoing; |
| }, |
| }; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>has_permitted_subtrees_match = <span class="bool-val">false</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>has_permitted_subtrees_mismatch = <span class="bool-val">false</span>; |
| |
| <span class="kw">loop </span>{ |
| <span class="comment">// http://tools.ietf.org/html/rfc5280#section-4.2.1.10: "Within this |
| // profile, the minimum and maximum fields are not used with any name |
| // forms, thus, the minimum MUST be zero, and maximum MUST be absent." |
| // |
| // Since the default value isn't allowed to be encoded according to the |
| // DER encoding rules for DEFAULT, this is equivalent to saying that |
| // neither minimum or maximum must be encoded. |
| </span><span class="kw">fn </span>general_subtree<<span class="lifetime">'b</span>>( |
| input: <span class="kw-2">&mut </span>untrusted::Reader<<span class="lifetime">'b</span>>, |
| ) -> <span class="prelude-ty">Result</span><GeneralName<<span class="lifetime">'b</span>>, Error> { |
| <span class="kw">let </span>general_subtree = der::expect_tag_and_get_value(input, der::Tag::Sequence)<span class="question-mark">?</span>; |
| general_subtree.read_all(Error::BadDER, |subtree| general_name(subtree)) |
| } |
| |
| <span class="kw">let </span>base = <span class="kw">match </span>general_subtree(<span class="kw-2">&mut </span>constraints) { |
| <span class="prelude-val">Ok</span>(base) => base, |
| <span class="prelude-val">Err</span>(err) => { |
| <span class="kw">return </span>NameIteration::Stop(<span class="prelude-val">Err</span>(err)); |
| }, |
| }; |
| |
| <span class="kw">let </span>matches = <span class="kw">match </span>(name, base) { |
| (GeneralName::DNSName(name), GeneralName::DNSName(base)) => |
| presented_dns_id_matches_dns_id_constraint(name, base).ok_or(Error::BadDER), |
| |
| (GeneralName::DirectoryName(name), GeneralName::DirectoryName(base)) => |
| presented_directory_name_matches_constraint(name, base, subtrees), |
| |
| (GeneralName::IPAddress(name), GeneralName::IPAddress(base)) => |
| presented_ip_address_matches_constraint(name, base), |
| |
| <span class="comment">// RFC 4280 says "If a name constraints extension that is marked as |
| // critical imposes constraints on a particular name form, and an |
| // instance of that name form appears in the subject field or |
| // subjectAltName extension of a subsequent certificate, then the |
| // application MUST either process the constraint or reject the |
| // certificate." Later, the CABForum agreed to support non-critical |
| // constraints, so it is important to reject the cert without |
| // considering whether the name constraint it critical. |
| </span>(GeneralName::Unsupported(name_tag), GeneralName::Unsupported(base_tag)) |
| <span class="kw">if </span>name_tag == base_tag => |
| <span class="prelude-val">Err</span>(Error::NameConstraintViolation), |
| |
| <span class="kw">_ </span>=> <span class="prelude-val">Ok</span>(<span class="bool-val">false</span>), |
| }; |
| |
| <span class="kw">match </span>(subtrees, matches) { |
| (Subtrees::PermittedSubtrees, <span class="prelude-val">Ok</span>(<span class="bool-val">true</span>)) => { |
| has_permitted_subtrees_match = <span class="bool-val">true</span>; |
| }, |
| |
| (Subtrees::PermittedSubtrees, <span class="prelude-val">Ok</span>(<span class="bool-val">false</span>)) => { |
| has_permitted_subtrees_mismatch = <span class="bool-val">true</span>; |
| }, |
| |
| (Subtrees::ExcludedSubtrees, <span class="prelude-val">Ok</span>(<span class="bool-val">true</span>)) => { |
| <span class="kw">return </span>NameIteration::Stop(<span class="prelude-val">Err</span>(Error::NameConstraintViolation)); |
| }, |
| |
| (Subtrees::ExcludedSubtrees, <span class="prelude-val">Ok</span>(<span class="bool-val">false</span>)) => (), |
| |
| (<span class="kw">_</span>, <span class="prelude-val">Err</span>(err)) => { |
| <span class="kw">return </span>NameIteration::Stop(<span class="prelude-val">Err</span>(err)); |
| }, |
| } |
| |
| <span class="kw">if </span>constraints.at_end() { |
| <span class="kw">break</span>; |
| } |
| } |
| |
| <span class="kw">if </span>has_permitted_subtrees_mismatch && !has_permitted_subtrees_match { |
| <span class="comment">// If there was any entry of the given type in permittedSubtrees, then |
| // it required that at least one of them must match. Since none of them |
| // did, we have a failure. |
| </span>NameIteration::Stop(<span class="prelude-val">Err</span>(Error::NameConstraintViolation)) |
| } <span class="kw">else </span>{ |
| NameIteration::KeepGoing |
| } |
| } |
| |
| <span class="comment">// TODO: document this. |
| </span><span class="kw">fn </span>presented_directory_name_matches_constraint( |
| name: untrusted::Input, constraint: untrusted::Input, subtrees: Subtrees, |
| ) -> <span class="prelude-ty">Result</span><bool, Error> { |
| <span class="kw">match </span>subtrees { |
| Subtrees::PermittedSubtrees => <span class="prelude-val">Ok</span>(name == constraint), |
| Subtrees::ExcludedSubtrees => <span class="prelude-val">Ok</span>(<span class="bool-val">true</span>), |
| } |
| } |
| |
| <span class="comment">// https://tools.ietf.org/html/rfc5280#section-4.2.1.10 says: |
| // |
| // For IPv4 addresses, the iPAddress field of GeneralName MUST contain |
| // eight (8) octets, encoded in the style of RFC 4632 (CIDR) to represent |
| // an address range [RFC4632]. For IPv6 addresses, the iPAddress field |
| // MUST contain 32 octets similarly encoded. For example, a name |
| // constraint for "class C" subnet 192.0.2.0 is represented as the |
| // octets C0 00 02 00 FF FF FF 00, representing the CIDR notation |
| // 192.0.2.0/24 (mask 255.255.255.0). |
| </span><span class="kw">fn </span>presented_ip_address_matches_constraint( |
| name: untrusted::Input, constraint: untrusted::Input, |
| ) -> <span class="prelude-ty">Result</span><bool, Error> { |
| <span class="kw">if </span>name.len() != <span class="number">4 </span>&& name.len() != <span class="number">16 </span>{ |
| <span class="kw">return </span><span class="prelude-val">Err</span>(Error::BadDER); |
| } |
| <span class="kw">if </span>constraint.len() != <span class="number">8 </span>&& constraint.len() != <span class="number">32 </span>{ |
| <span class="kw">return </span><span class="prelude-val">Err</span>(Error::BadDER); |
| } |
| |
| <span class="comment">// an IPv4 address never matches an IPv6 constraint, and vice versa. |
| </span><span class="kw">if </span>name.len() * <span class="number">2 </span>!= constraint.len() { |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="bool-val">false</span>); |
| } |
| |
| <span class="kw">let </span>(constraint_address, constraint_mask) = constraint.read_all(Error::BadDER, |value| { |
| <span class="kw">let </span>address = value.read_bytes(constraint.len() / <span class="number">2</span>).unwrap(); |
| <span class="kw">let </span>mask = value.read_bytes(constraint.len() / <span class="number">2</span>).unwrap(); |
| <span class="prelude-val">Ok</span>((address, mask)) |
| })<span class="question-mark">?</span>; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>name = untrusted::Reader::new(name); |
| <span class="kw">let </span><span class="kw-2">mut </span>constraint_address = untrusted::Reader::new(constraint_address); |
| <span class="kw">let </span><span class="kw-2">mut </span>constraint_mask = untrusted::Reader::new(constraint_mask); |
| <span class="kw">loop </span>{ |
| <span class="kw">let </span>name_byte = name.read_byte().unwrap(); |
| <span class="kw">let </span>constraint_address_byte = constraint_address.read_byte().unwrap(); |
| <span class="kw">let </span>constraint_mask_byte = constraint_mask.read_byte().unwrap(); |
| <span class="kw">if </span>((name_byte ^ constraint_address_byte) & constraint_mask_byte) != <span class="number">0 </span>{ |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="bool-val">false</span>); |
| } |
| <span class="kw">if </span>name.at_end() { |
| <span class="kw">break</span>; |
| } |
| } |
| |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="bool-val">true</span>); |
| } |
| |
| <span class="attribute">#[derive(Clone, Copy)] |
| </span><span class="kw">enum </span>NameIteration { |
| KeepGoing, |
| Stop(<span class="prelude-ty">Result</span><(), Error>), |
| } |
| |
| <span class="kw">fn </span>iterate_names( |
| subject: untrusted::Input, subject_alt_name: <span class="prelude-ty">Option</span><untrusted::Input>, |
| result_if_never_stopped_early: <span class="prelude-ty">Result</span><(), Error>, f: <span class="kw-2">&</span><span class="kw">dyn </span>Fn(GeneralName) -> NameIteration, |
| ) -> <span class="prelude-ty">Result</span><(), Error> { |
| <span class="kw">match </span>subject_alt_name { |
| <span class="prelude-val">Some</span>(subject_alt_name) => { |
| <span class="kw">let </span><span class="kw-2">mut </span>subject_alt_name = untrusted::Reader::new(subject_alt_name); |
| <span class="comment">// https://bugzilla.mozilla.org/show_bug.cgi?id=1143085: An empty |
| // subjectAltName is not legal, but some certificates have an empty |
| // subjectAltName. Since we don't support CN-IDs, the certificate |
| // will be rejected either way, but checking `at_end` before |
| // attempting to parse the first entry allows us to return a better |
| // error code. |
| </span><span class="kw">while </span>!subject_alt_name.at_end() { |
| <span class="kw">let </span>name = general_name(<span class="kw-2">&mut </span>subject_alt_name)<span class="question-mark">?</span>; |
| <span class="kw">match </span>f(name) { |
| NameIteration::Stop(result) => { |
| <span class="kw">return </span>result; |
| }, |
| NameIteration::KeepGoing => (), |
| } |
| } |
| }, |
| <span class="prelude-val">None </span>=> (), |
| } |
| |
| <span class="kw">match </span>f(GeneralName::DirectoryName(subject)) { |
| NameIteration::Stop(result) => result, |
| NameIteration::KeepGoing => result_if_never_stopped_early, |
| } |
| } |
| |
| <span class="comment">// It is *not* valid to derive `Eq`, `PartialEq, etc. for this type. In |
| // particular, for the types of `GeneralName`s that we don't understand, we |
| // don't even store the value. Also, the meaning of a `GeneralName` in a name |
| // constraint is different than the meaning of the identically-represented |
| // `GeneralName` in other contexts. |
| </span><span class="attribute">#[derive(Clone, Copy)] |
| </span><span class="kw">enum </span>GeneralName<<span class="lifetime">'a</span>> { |
| DNSName(untrusted::Input<<span class="lifetime">'a</span>>), |
| DirectoryName(untrusted::Input<<span class="lifetime">'a</span>>), |
| IPAddress(untrusted::Input<<span class="lifetime">'a</span>>), |
| |
| <span class="comment">// The value is the `tag & ~(der::CONTEXT_SPECIFIC | der::CONSTRUCTED)` so |
| // that the name constraint checking matches tags regardless of whether |
| // those bits are set. |
| </span>Unsupported(u8), |
| } |
| |
| <span class="kw">fn </span>general_name<<span class="lifetime">'a</span>>(input: <span class="kw-2">&mut </span>untrusted::Reader<<span class="lifetime">'a</span>>) -> <span class="prelude-ty">Result</span><GeneralName<<span class="lifetime">'a</span>>, Error> { |
| <span class="kw">use </span>ring::io::der::{CONSTRUCTED, CONTEXT_SPECIFIC}; |
| <span class="kw">const </span>OTHER_NAME_TAG: u8 = CONTEXT_SPECIFIC | CONSTRUCTED | <span class="number">0</span>; |
| <span class="kw">const </span>RFC822_NAME_TAG: u8 = CONTEXT_SPECIFIC | <span class="number">1</span>; |
| <span class="kw">const </span>DNS_NAME_TAG: u8 = CONTEXT_SPECIFIC | <span class="number">2</span>; |
| <span class="kw">const </span>X400_ADDRESS_TAG: u8 = CONTEXT_SPECIFIC | CONSTRUCTED | <span class="number">3</span>; |
| <span class="kw">const </span>DIRECTORY_NAME_TAG: u8 = CONTEXT_SPECIFIC | CONSTRUCTED | <span class="number">4</span>; |
| <span class="kw">const </span>EDI_PARTY_NAME_TAG: u8 = CONTEXT_SPECIFIC | CONSTRUCTED | <span class="number">5</span>; |
| <span class="kw">const </span>UNIFORM_RESOURCE_IDENTIFIER_TAG: u8 = CONTEXT_SPECIFIC | <span class="number">6</span>; |
| <span class="kw">const </span>IP_ADDRESS_TAG: u8 = CONTEXT_SPECIFIC | <span class="number">7</span>; |
| <span class="kw">const </span>REGISTERED_ID_TAG: u8 = CONTEXT_SPECIFIC | <span class="number">8</span>; |
| |
| <span class="kw">let </span>(tag, value) = der::read_tag_and_get_value(input)<span class="question-mark">?</span>; |
| <span class="kw">let </span>name = <span class="kw">match </span>tag { |
| DNS_NAME_TAG => GeneralName::DNSName(value), |
| DIRECTORY_NAME_TAG => GeneralName::DirectoryName(value), |
| IP_ADDRESS_TAG => GeneralName::IPAddress(value), |
| |
| OTHER_NAME_TAG |
| | RFC822_NAME_TAG |
| | X400_ADDRESS_TAG |
| | EDI_PARTY_NAME_TAG |
| | UNIFORM_RESOURCE_IDENTIFIER_TAG |
| | REGISTERED_ID_TAG => GeneralName::Unsupported(tag & !(CONTEXT_SPECIFIC | CONSTRUCTED)), |
| |
| <span class="kw">_ </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(Error::BadDER), |
| }; |
| <span class="prelude-val">Ok</span>(name) |
| } |
| |
| <span class="kw">fn </span>presented_dns_id_matches_reference_dns_id( |
| presented_dns_id: untrusted::Input, reference_dns_id: untrusted::Input, |
| ) -> <span class="prelude-ty">Option</span><bool> { |
| presented_dns_id_matches_reference_dns_id_internal( |
| presented_dns_id, |
| IDRole::ReferenceID, |
| reference_dns_id, |
| ) |
| } |
| |
| <span class="kw">fn </span>presented_dns_id_matches_dns_id_constraint( |
| presented_dns_id: untrusted::Input, reference_dns_id: untrusted::Input, |
| ) -> <span class="prelude-ty">Option</span><bool> { |
| presented_dns_id_matches_reference_dns_id_internal( |
| presented_dns_id, |
| IDRole::NameConstraint, |
| reference_dns_id, |
| ) |
| } |
| |
| <span class="comment">// We do not distinguish between a syntactically-invalid presented_dns_id and |
| // one that is syntactically valid but does not match reference_dns_id; in both |
| // cases, the result is false. |
| // |
| // We assume that both presented_dns_id and reference_dns_id are encoded in |
| // such a way that US-ASCII (7-bit) characters are encoded in one byte and no |
| // encoding of a non-US-ASCII character contains a code point in the range |
| // 0-127. For example, UTF-8 is OK but UTF-16 is not. |
| // |
| // RFC6125 says that a wildcard label may be of the form <x>*<y>.<DNSID>, where |
| // <x> and/or <y> may be empty. However, NSS requires <y> to be empty, and we |
| // follow NSS's stricter policy by accepting wildcards only of the form |
| // <x>*.<DNSID>, where <x> may be empty. |
| // |
| // An relative presented DNS ID matches both an absolute reference ID and a |
| // relative reference ID. Absolute presented DNS IDs are not supported: |
| // |
| // Presented ID Reference ID Result |
| // ------------------------------------- |
| // example.com example.com Match |
| // example.com. example.com Mismatch |
| // example.com example.com. Match |
| // example.com. example.com. Mismatch |
| // |
| // There are more subtleties documented inline in the code. |
| // |
| // Name constraints /////////////////////////////////////////////////////////// |
| // |
| // This is all RFC 5280 has to say about DNSName constraints: |
| // |
| // DNS name restrictions are expressed as host.example.com. Any DNS |
| // name that can be constructed by simply adding zero or more labels to |
| // the left-hand side of the name satisfies the name constraint. For |
| // example, www.host.example.com would satisfy the constraint but |
| // host1.example.com would not. |
| // |
| // This lack of specificity has lead to a lot of uncertainty regarding |
| // subdomain matching. In particular, the following questions have been |
| // raised and answered: |
| // |
| // Q: Does a presented identifier equal (case insensitive) to the name |
| // constraint match the constraint? For example, does the presented |
| // ID "host.example.com" match a "host.example.com" constraint? |
| // A: Yes. RFC5280 says "by simply adding zero or more labels" and this |
| // is the case of adding zero labels. |
| // |
| // Q: When the name constraint does not start with ".", do subdomain |
| // presented identifiers match it? For example, does the presented |
| // ID "www.host.example.com" match a "host.example.com" constraint? |
| // A: Yes. RFC5280 says "by simply adding zero or more labels" and this |
| // is the case of adding more than zero labels. The example is the |
| // one from RFC 5280. |
| // |
| // Q: When the name constraint does not start with ".", does a |
| // non-subdomain prefix match it? For example, does "bigfoo.bar.com" |
| // match "foo.bar.com"? [4] |
| // A: No. We interpret RFC 5280's language of "adding zero or more labels" |
| // to mean that whole labels must be prefixed. |
| // |
| // (Note that the above three scenarios are the same as the RFC 6265 |
| // domain matching rules [0].) |
| // |
| // Q: Is a name constraint that starts with "." valid, and if so, what |
| // semantics does it have? For example, does a presented ID of |
| // "www.example.com" match a constraint of ".example.com"? Does a |
| // presented ID of "example.com" match a constraint of ".example.com"? |
| // A: This implementation, NSS[1], and SChannel[2] all support a |
| // leading ".", but OpenSSL[3] does not yet. Amongst the |
| // implementations that support it, a leading "." is legal and means |
| // the same thing as when the "." is omitted, EXCEPT that a |
| // presented identifier equal (case insensitive) to the name |
| // constraint is not matched; i.e. presented DNSName identifiers |
| // must be subdomains. Some CAs in Mozilla's CA program (e.g. HARICA) |
| // have name constraints with the leading "." in their root |
| // certificates. The name constraints imposed on DCISS by Mozilla also |
| // have the it, so supporting this is a requirement for backward |
| // compatibility, even if it is not yet standardized. So, for example, a |
| // presented ID of "www.example.com" matches a constraint of |
| // ".example.com" but a presented ID of "example.com" does not. |
| // |
| // Q: Is there a way to prevent subdomain matches? |
| // A: Yes. |
| // |
| // Some people have proposed that dNSName constraints that do not |
| // start with a "." should be restricted to exact (case insensitive) |
| // matches. However, such a change of semantics from what RFC5280 |
| // specifies would be a non-backward-compatible change in the case of |
| // permittedSubtrees constraints, and it would be a security issue for |
| // excludedSubtrees constraints. |
| // |
| // However, it can be done with a combination of permittedSubtrees and |
| // excludedSubtrees, e.g. "example.com" in permittedSubtrees and |
| // ".example.com" in excludedSubtrees. |
| // |
| // Q: Are name constraints allowed to be specified as absolute names? |
| // For example, does a presented ID of "example.com" match a name |
| // constraint of "example.com." and vice versa. |
| // A: Absolute names are not supported as presented IDs or name |
| // constraints. Only reference IDs may be absolute. |
| // |
| // Q: Is "" a valid DNSName constraint? If so, what does it mean? |
| // A: Yes. Any valid presented DNSName can be formed "by simply adding zero |
| // or more labels to the left-hand side" of "". In particular, an |
| // excludedSubtrees DNSName constraint of "" forbids all DNSNames. |
| // |
| // Q: Is "." a valid DNSName constraint? If so, what does it mean? |
| // A: No, because absolute names are not allowed (see above). |
| // |
| // [0] RFC 6265 (Cookies) Domain Matching rules: |
| // http://tools.ietf.org/html/rfc6265#section-5.1.3 |
| // [1] NSS source code: |
| // https://mxr.mozilla.org/nss/source/lib/certdb/genname.c?rev=2a7348f013cb#1209 |
| // [2] Description of SChannel's behavior from Microsoft: |
| // http://www.imc.org/ietf-pkix/mail-archive/msg04668.html |
| // [3] Proposal to add such support to OpenSSL: |
| // http://www.mail-archive.com/openssl-dev%40openssl.org/msg36204.html |
| // https://rt.openssl.org/Ticket/Display.html?id=3562 |
| // [4] Feedback on the lack of clarify in the definition that never got |
| // incorporated into the spec: |
| // https://www.ietf.org/mail-archive/web/pkix/current/msg21192.html |
| </span><span class="kw">fn </span>presented_dns_id_matches_reference_dns_id_internal( |
| presented_dns_id: untrusted::Input, reference_dns_id_role: IDRole, |
| reference_dns_id: untrusted::Input, |
| ) -> <span class="prelude-ty">Option</span><bool> { |
| <span class="kw">if </span>!is_valid_dns_id(presented_dns_id, IDRole::PresentedID, AllowWildcards::Yes) { |
| <span class="kw">return </span><span class="prelude-val">None</span>; |
| } |
| |
| <span class="kw">if </span>!is_valid_dns_id(reference_dns_id, reference_dns_id_role, AllowWildcards::No) { |
| <span class="kw">return </span><span class="prelude-val">None</span>; |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>presented = untrusted::Reader::new(presented_dns_id); |
| <span class="kw">let </span><span class="kw-2">mut </span>reference = untrusted::Reader::new(reference_dns_id); |
| |
| <span class="kw">match </span>reference_dns_id_role { |
| IDRole::ReferenceID => (), |
| |
| IDRole::NameConstraint <span class="kw">if </span>presented_dns_id.len() > reference_dns_id.len() => { |
| <span class="kw">if </span>reference_dns_id.len() == <span class="number">0 </span>{ |
| <span class="comment">// An empty constraint matches everything. |
| </span><span class="kw">return </span><span class="prelude-val">Some</span>(<span class="bool-val">true</span>); |
| } |
| |
| <span class="comment">// If the reference ID starts with a dot then skip the prefix of |
| // the presented ID and start the comparison at the position of |
| // that dot. Examples: |
| // |
| // Matches Doesn't Match |
| // ----------------------------------------------------------- |
| // original presented ID: www.example.com badexample.com |
| // skipped: www ba |
| // presented ID w/o prefix: .example.com dexample.com |
| // reference ID: .example.com .example.com |
| // |
| // If the reference ID does not start with a dot then we skip |
| // the prefix of the presented ID but also verify that the |
| // prefix ends with a dot. Examples: |
| // |
| // Matches Doesn't Match |
| // ----------------------------------------------------------- |
| // original presented ID: www.example.com badexample.com |
| // skipped: www ba |
| // must be '.': . d |
| // presented ID w/o prefix: example.com example.com |
| // reference ID: example.com example.com |
| // |
| </span><span class="kw">if </span>reference.peek(<span class="string">b'.'</span>) { |
| <span class="kw">if </span>presented |
| .skip(presented_dns_id.len() - reference_dns_id.len()) |
| .is_err() |
| { |
| <span class="macro">unreachable!</span>(); |
| } |
| } <span class="kw">else </span>{ |
| <span class="kw">if </span>presented |
| .skip(presented_dns_id.len() - reference_dns_id.len() - <span class="number">1</span>) |
| .is_err() |
| { |
| <span class="macro">unreachable!</span>(); |
| } |
| <span class="kw">if </span>presented.read_byte() != <span class="prelude-val">Ok</span>(<span class="string">b'.'</span>) { |
| <span class="kw">return </span><span class="prelude-val">Some</span>(<span class="bool-val">false</span>); |
| } |
| } |
| }, |
| |
| IDRole::NameConstraint => (), |
| |
| IDRole::PresentedID => <span class="macro">unreachable!</span>(), |
| } |
| |
| <span class="comment">// Only allow wildcard labels that consist only of '*'. |
| </span><span class="kw">if </span>presented.peek(<span class="string">b'*'</span>) { |
| <span class="kw">if </span>presented.skip(<span class="number">1</span>).is_err() { |
| <span class="macro">unreachable!</span>(); |
| } |
| |
| <span class="kw">loop </span>{ |
| <span class="kw">if </span>reference.read_byte().is_err() { |
| <span class="kw">return </span><span class="prelude-val">Some</span>(<span class="bool-val">false</span>); |
| } |
| <span class="kw">if </span>reference.peek(<span class="string">b'.'</span>) { |
| <span class="kw">break</span>; |
| } |
| } |
| } |
| |
| <span class="kw">loop </span>{ |
| <span class="kw">let </span>presented_byte = <span class="kw">match </span>(presented.read_byte(), reference.read_byte()) { |
| (<span class="prelude-val">Ok</span>(p), <span class="prelude-val">Ok</span>(r)) <span class="kw">if </span>ascii_lower(p) == ascii_lower(r) => p, |
| <span class="kw">_ </span>=> { |
| <span class="kw">return </span><span class="prelude-val">Some</span>(<span class="bool-val">false</span>); |
| }, |
| }; |
| |
| <span class="kw">if </span>presented.at_end() { |
| <span class="comment">// Don't allow presented IDs to be absolute. |
| </span><span class="kw">if </span>presented_byte == <span class="string">b'.' </span>{ |
| <span class="kw">return </span><span class="prelude-val">None</span>; |
| } |
| <span class="kw">break</span>; |
| } |
| } |
| |
| <span class="comment">// Allow a relative presented DNS ID to match an absolute reference DNS ID, |
| // unless we're matching a name constraint. |
| </span><span class="kw">if </span>!reference.at_end() { |
| <span class="kw">if </span>reference_dns_id_role != IDRole::NameConstraint { |
| <span class="kw">match </span>reference.read_byte() { |
| <span class="prelude-val">Ok</span>(<span class="string">b'.'</span>) => (), |
| <span class="kw">_ </span>=> { |
| <span class="kw">return </span><span class="prelude-val">Some</span>(<span class="bool-val">false</span>); |
| }, |
| }; |
| } |
| <span class="kw">if </span>!reference.at_end() { |
| <span class="kw">return </span><span class="prelude-val">Some</span>(<span class="bool-val">false</span>); |
| } |
| } |
| |
| <span class="macro">assert!</span>(presented.at_end()); |
| <span class="macro">assert!</span>(reference.at_end()); |
| |
| <span class="kw">return </span><span class="prelude-val">Some</span>(<span class="bool-val">true</span>); |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>ascii_lower(b: u8) -> u8 { |
| <span class="kw">match </span>b { |
| <span class="string">b'A'</span>..=<span class="string">b'Z' </span>=> b + <span class="string">b'a' </span>- <span class="string">b'A'</span>, |
| <span class="kw">_ </span>=> b, |
| } |
| } |
| |
| <span class="attribute">#[derive(PartialEq)] |
| </span><span class="kw">enum </span>AllowWildcards { |
| No, |
| Yes, |
| } |
| |
| <span class="attribute">#[derive(Clone, Copy, PartialEq)] |
| </span><span class="kw">enum </span>IDRole { |
| ReferenceID, |
| PresentedID, |
| NameConstraint, |
| } |
| |
| <span class="kw">fn </span>is_valid_reference_dns_id(hostname: untrusted::Input) -> bool { |
| is_valid_dns_id(hostname, IDRole::ReferenceID, AllowWildcards::No) |
| } |
| |
| <span class="comment">// https://tools.ietf.org/html/rfc5280#section-4.2.1.6: |
| // |
| // When the subjectAltName extension contains a domain name system |
| // label, the domain name MUST be stored in the dNSName (an IA5String). |
| // The name MUST be in the "preferred name syntax", as specified by |
| // Section 3.5 of [RFC1034] and as modified by Section 2.1 of |
| // [RFC1123]. |
| // |
| // https://bugzilla.mozilla.org/show_bug.cgi?id=1136616: As an exception to the |
| // requirement above, underscores are also allowed in names for compatibility. |
| </span><span class="kw">fn </span>is_valid_dns_id( |
| hostname: untrusted::Input, id_role: IDRole, allow_wildcards: AllowWildcards, |
| ) -> bool { |
| <span class="comment">// https://blogs.msdn.microsoft.com/oldnewthing/20120412-00/?p=7873/ |
| </span><span class="kw">if </span>hostname.len() > <span class="number">253 </span>{ |
| <span class="kw">return </span><span class="bool-val">false</span>; |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>input = untrusted::Reader::new(hostname); |
| |
| <span class="kw">if </span>id_role == IDRole::NameConstraint && input.at_end() { |
| <span class="kw">return </span><span class="bool-val">true</span>; |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>dot_count = <span class="number">0</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>label_length = <span class="number">0</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>label_is_all_numeric = <span class="bool-val">false</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>label_ends_with_hyphen = <span class="bool-val">false</span>; |
| |
| <span class="comment">// Only presented IDs are allowed to have wildcard labels. And, like |
| // Chromium, be stricter than RFC 6125 requires by insisting that a |
| // wildcard label consist only of '*'. |
| </span><span class="kw">let </span>is_wildcard = allow_wildcards == AllowWildcards::Yes && input.peek(<span class="string">b'*'</span>); |
| <span class="kw">let </span><span class="kw-2">mut </span>is_first_byte = !is_wildcard; |
| <span class="kw">if </span>is_wildcard { |
| <span class="kw">if </span>input.read_byte() != <span class="prelude-val">Ok</span>(<span class="string">b'*'</span>) || input.read_byte() != <span class="prelude-val">Ok</span>(<span class="string">b'.'</span>) { |
| <span class="kw">return </span><span class="bool-val">false</span>; |
| } |
| dot_count += <span class="number">1</span>; |
| } |
| |
| <span class="kw">loop </span>{ |
| <span class="kw">const </span>MAX_LABEL_LENGTH: usize = <span class="number">63</span>; |
| |
| <span class="kw">match </span>input.read_byte() { |
| <span class="prelude-val">Ok</span>(<span class="string">b'-'</span>) => { |
| <span class="kw">if </span>label_length == <span class="number">0 </span>{ |
| <span class="kw">return </span><span class="bool-val">false</span>; <span class="comment">// Labels must not start with a hyphen. |
| </span>} |
| label_is_all_numeric = <span class="bool-val">false</span>; |
| label_ends_with_hyphen = <span class="bool-val">true</span>; |
| label_length += <span class="number">1</span>; |
| <span class="kw">if </span>label_length > MAX_LABEL_LENGTH { |
| <span class="kw">return </span><span class="bool-val">false</span>; |
| } |
| }, |
| |
| <span class="prelude-val">Ok</span>(<span class="string">b'0'</span>..=<span class="string">b'9'</span>) => { |
| <span class="kw">if </span>label_length == <span class="number">0 </span>{ |
| label_is_all_numeric = <span class="bool-val">true</span>; |
| } |
| label_ends_with_hyphen = <span class="bool-val">false</span>; |
| label_length += <span class="number">1</span>; |
| <span class="kw">if </span>label_length > MAX_LABEL_LENGTH { |
| <span class="kw">return </span><span class="bool-val">false</span>; |
| } |
| }, |
| |
| <span class="prelude-val">Ok</span>(<span class="string">b'a'</span>..=<span class="string">b'z'</span>) | <span class="prelude-val">Ok</span>(<span class="string">b'A'</span>..=<span class="string">b'Z'</span>) | <span class="prelude-val">Ok</span>(<span class="string">b'_'</span>) => { |
| label_is_all_numeric = <span class="bool-val">false</span>; |
| label_ends_with_hyphen = <span class="bool-val">false</span>; |
| label_length += <span class="number">1</span>; |
| <span class="kw">if </span>label_length > MAX_LABEL_LENGTH { |
| <span class="kw">return </span><span class="bool-val">false</span>; |
| } |
| }, |
| |
| <span class="prelude-val">Ok</span>(<span class="string">b'.'</span>) => { |
| dot_count += <span class="number">1</span>; |
| <span class="kw">if </span>label_length == <span class="number">0 </span>&& (id_role != IDRole::NameConstraint || !is_first_byte) { |
| <span class="kw">return </span><span class="bool-val">false</span>; |
| } |
| <span class="kw">if </span>label_ends_with_hyphen { |
| <span class="kw">return </span><span class="bool-val">false</span>; <span class="comment">// Labels must not end with a hyphen. |
| </span>} |
| label_length = <span class="number">0</span>; |
| }, |
| |
| <span class="kw">_ </span>=> { |
| <span class="kw">return </span><span class="bool-val">false</span>; |
| }, |
| } |
| is_first_byte = <span class="bool-val">false</span>; |
| |
| <span class="kw">if </span>input.at_end() { |
| <span class="kw">break</span>; |
| } |
| } |
| |
| <span class="comment">// Only reference IDs, not presented IDs or name constraints, may be |
| // absolute. |
| </span><span class="kw">if </span>label_length == <span class="number">0 </span>&& id_role != IDRole::ReferenceID { |
| <span class="kw">return </span><span class="bool-val">false</span>; |
| } |
| |
| <span class="kw">if </span>label_ends_with_hyphen { |
| <span class="kw">return </span><span class="bool-val">false</span>; <span class="comment">// Labels must not end with a hyphen. |
| </span>} |
| |
| <span class="kw">if </span>label_is_all_numeric { |
| <span class="kw">return </span><span class="bool-val">false</span>; <span class="comment">// Last label must not be all numeric. |
| </span>} |
| |
| <span class="kw">if </span>is_wildcard { |
| <span class="comment">// If the DNS ID ends with a dot, the last dot signifies an absolute ID. |
| </span><span class="kw">let </span>label_count = <span class="kw">if </span>label_length == <span class="number">0 </span>{ |
| dot_count |
| } <span class="kw">else </span>{ |
| dot_count + <span class="number">1 |
| </span>}; |
| |
| <span class="comment">// Like NSS, require at least two labels to follow the wildcard label. |
| // TODO: Allow the TrustDomain to control this on a per-eTLD+1 basis, |
| // similar to Chromium. Even then, it might be better to still enforce |
| // that there are at least two labels after the wildcard. |
| </span><span class="kw">if </span>label_count < <span class="number">3 </span>{ |
| <span class="kw">return </span><span class="bool-val">false</span>; |
| } |
| } |
| |
| <span class="bool-val">true |
| </span>} |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>tests { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| |
| <span class="kw">const </span>PRESENTED_MATCHES_REFERENCE: <span class="kw-2">&</span>[(<span class="kw-2">&</span>[u8], <span class="kw-2">&</span>[u8], <span class="prelude-ty">Option</span><bool>)] = <span class="kw-2">&</span>[ |
| (<span class="string">b""</span>, <span class="string">b"a"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"a"</span>, <span class="string">b"a"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"b"</span>, <span class="string">b"a"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">false</span>)), |
| (<span class="string">b"*.b.a"</span>, <span class="string">b"c.b.a"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"*.b.a"</span>, <span class="string">b"b.a"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">false</span>)), |
| (<span class="string">b"*.b.a"</span>, <span class="string">b"b.a."</span>, <span class="prelude-val">Some</span>(<span class="bool-val">false</span>)), |
| <span class="comment">// Wildcard not in leftmost label |
| </span>(<span class="string">b"d.c.b.a"</span>, <span class="string">b"d.c.b.a"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"d.*.b.a"</span>, <span class="string">b"d.c.b.a"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"d.c*.b.a"</span>, <span class="string">b"d.c.b.a"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"d.c*.b.a"</span>, <span class="string">b"d.cc.b.a"</span>, <span class="prelude-val">None</span>), |
| <span class="comment">// case sensitivity |
| </span>( |
| <span class="string">b"abcdefghijklmnopqrstuvwxyz"</span>, |
| <span class="string">b"ABCDEFGHIJKLMNOPQRSTUVWXYZ"</span>, |
| <span class="prelude-val">Some</span>(<span class="bool-val">true</span>), |
| ), |
| ( |
| <span class="string">b"ABCDEFGHIJKLMNOPQRSTUVWXYZ"</span>, |
| <span class="string">b"abcdefghijklmnopqrstuvwxyz"</span>, |
| <span class="prelude-val">Some</span>(<span class="bool-val">true</span>), |
| ), |
| (<span class="string">b"aBc"</span>, <span class="string">b"Abc"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| <span class="comment">// digits |
| </span>(<span class="string">b"a1"</span>, <span class="string">b"a1"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| <span class="comment">// A trailing dot indicates an absolute name, and absolute names can match |
| // relative names, and vice-versa. |
| </span>(<span class="string">b"example"</span>, <span class="string">b"example"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"example."</span>, <span class="string">b"example."</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"example"</span>, <span class="string">b"example."</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"example."</span>, <span class="string">b"example"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"example.com"</span>, <span class="string">b"example.com"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"example.com."</span>, <span class="string">b"example.com."</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"example.com"</span>, <span class="string">b"example.com."</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"example.com."</span>, <span class="string">b"example.com"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"example.com.."</span>, <span class="string">b"example.com."</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"example.com.."</span>, <span class="string">b"example.com"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"example.com..."</span>, <span class="string">b"example.com."</span>, <span class="prelude-val">None</span>), |
| <span class="comment">// xn-- IDN prefix |
| </span>(<span class="string">b"x*.b.a"</span>, <span class="string">b"xa.b.a"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"x*.b.a"</span>, <span class="string">b"xna.b.a"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"x*.b.a"</span>, <span class="string">b"xn-a.b.a"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"x*.b.a"</span>, <span class="string">b"xn--a.b.a"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"xn*.b.a"</span>, <span class="string">b"xn--a.b.a"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"xn-*.b.a"</span>, <span class="string">b"xn--a.b.a"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"xn--*.b.a"</span>, <span class="string">b"xn--a.b.a"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"xn*.b.a"</span>, <span class="string">b"xn--a.b.a"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"xn-*.b.a"</span>, <span class="string">b"xn--a.b.a"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"xn--*.b.a"</span>, <span class="string">b"xn--a.b.a"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"xn---*.b.a"</span>, <span class="string">b"xn--a.b.a"</span>, <span class="prelude-val">None</span>), |
| <span class="comment">// "*" cannot expand to nothing. |
| </span>(<span class="string">b"c*.b.a"</span>, <span class="string">b"c.b.a"</span>, <span class="prelude-val">None</span>), |
| <span class="comment">// -------------------------------------------------------------------------- |
| // The rest of these are test cases adapted from Chromium's |
| // x509_certificate_unittest.cc. The parameter order is the opposite in |
| // Chromium's tests. Also, they some tests were modified to fit into this |
| // framework or due to intentional differences between mozilla::pkix and |
| // Chromium. |
| </span>(<span class="string">b"foo.com"</span>, <span class="string">b"foo.com"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"f"</span>, <span class="string">b"f"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"i"</span>, <span class="string">b"h"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">false</span>)), |
| (<span class="string">b"*.foo.com"</span>, <span class="string">b"bar.foo.com"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"*.test.fr"</span>, <span class="string">b"www.test.fr"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"*.test.FR"</span>, <span class="string">b"wwW.tESt.fr"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b".uk"</span>, <span class="string">b"f.uk"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"?.bar.foo.com"</span>, <span class="string">b"w.bar.foo.com"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"(www|ftp).foo.com"</span>, <span class="string">b"www.foo.com"</span>, <span class="prelude-val">None</span>), <span class="comment">// regex! |
| </span>(<span class="string">b"www.foo.com\0"</span>, <span class="string">b"www.foo.com"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"www.foo.com\0*.foo.com"</span>, <span class="string">b"www.foo.com"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"ww.house.example"</span>, <span class="string">b"www.house.example"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">false</span>)), |
| (<span class="string">b"www.test.org"</span>, <span class="string">b"test.org"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">false</span>)), |
| (<span class="string">b"*.test.org"</span>, <span class="string">b"test.org"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">false</span>)), |
| (<span class="string">b"*.org"</span>, <span class="string">b"test.org"</span>, <span class="prelude-val">None</span>), |
| <span class="comment">// '*' must be the only character in the wildcard label |
| </span>(<span class="string">b"w*.bar.foo.com"</span>, <span class="string">b"w.bar.foo.com"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"ww*ww.bar.foo.com"</span>, <span class="string">b"www.bar.foo.com"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"ww*ww.bar.foo.com"</span>, <span class="string">b"wwww.bar.foo.com"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"w*w.bar.foo.com"</span>, <span class="string">b"wwww.bar.foo.com"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"w*w.bar.foo.c0m"</span>, <span class="string">b"wwww.bar.foo.com"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"wa*.bar.foo.com"</span>, <span class="string">b"WALLY.bar.foo.com"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"*Ly.bar.foo.com"</span>, <span class="string">b"wally.bar.foo.com"</span>, <span class="prelude-val">None</span>), |
| <span class="comment">// Chromium does URL decoding of the reference ID, but we don't, and we also |
| // require that the reference ID is valid, so we can't test these two. |
| // (b"www.foo.com", b"ww%57.foo.com", Some(true)), |
| // (b"www&.foo.com", b"www%26.foo.com", Some(true)), |
| </span>(<span class="string">b"*.test.de"</span>, <span class="string">b"www.test.co.jp"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">false</span>)), |
| (<span class="string">b"*.jp"</span>, <span class="string">b"www.test.co.jp"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"www.test.co.uk"</span>, <span class="string">b"www.test.co.jp"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">false</span>)), |
| (<span class="string">b"www.*.co.jp"</span>, <span class="string">b"www.test.co.jp"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"www.bar.foo.com"</span>, <span class="string">b"www.bar.foo.com"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"*.foo.com"</span>, <span class="string">b"www.bar.foo.com"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">false</span>)), |
| (<span class="string">b"*.*.foo.com"</span>, <span class="string">b"www.bar.foo.com"</span>, <span class="prelude-val">None</span>), |
| <span class="comment">// Our matcher requires the reference ID to be a valid DNS name, so we cannot |
| // test this case. |
| // (b"*.*.bar.foo.com", b"*..bar.foo.com", Some(false)), |
| </span>(<span class="string">b"www.bath.org"</span>, <span class="string">b"www.bath.org"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| <span class="comment">// Our matcher requires the reference ID to be a valid DNS name, so we cannot |
| // test these cases. |
| // DNS_ID_MISMATCH("www.bath.org", ""), |
| // (b"www.bath.org", b"20.30.40.50", Some(false)), |
| // (b"www.bath.org", b"66.77.88.99", Some(false)), |
| |
| // IDN tests |
| </span>( |
| <span class="string">b"xn--poema-9qae5a.com.br"</span>, |
| <span class="string">b"xn--poema-9qae5a.com.br"</span>, |
| <span class="prelude-val">Some</span>(<span class="bool-val">true</span>), |
| ), |
| ( |
| <span class="string">b"*.xn--poema-9qae5a.com.br"</span>, |
| <span class="string">b"www.xn--poema-9qae5a.com.br"</span>, |
| <span class="prelude-val">Some</span>(<span class="bool-val">true</span>), |
| ), |
| ( |
| <span class="string">b"*.xn--poema-9qae5a.com.br"</span>, |
| <span class="string">b"xn--poema-9qae5a.com.br"</span>, |
| <span class="prelude-val">Some</span>(<span class="bool-val">false</span>), |
| ), |
| (<span class="string">b"xn--poema-*.com.br"</span>, <span class="string">b"xn--poema-9qae5a.com.br"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"xn--*-9qae5a.com.br"</span>, <span class="string">b"xn--poema-9qae5a.com.br"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"*--poema-9qae5a.com.br"</span>, <span class="string">b"xn--poema-9qae5a.com.br"</span>, <span class="prelude-val">None</span>), |
| <span class="comment">// The following are adapted from the examples quoted from |
| // http://tools.ietf.org/html/rfc6125#section-6.4.3 |
| // (e.g., *.example.com would match foo.example.com but |
| // not bar.foo.example.com or example.com). |
| </span>(<span class="string">b"*.example.com"</span>, <span class="string">b"foo.example.com"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"*.example.com"</span>, <span class="string">b"bar.foo.example.com"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">false</span>)), |
| (<span class="string">b"*.example.com"</span>, <span class="string">b"example.com"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">false</span>)), |
| (<span class="string">b"baz*.example.net"</span>, <span class="string">b"baz1.example.net"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"*baz.example.net"</span>, <span class="string">b"foobaz.example.net"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"b*z.example.net"</span>, <span class="string">b"buzz.example.net"</span>, <span class="prelude-val">None</span>), |
| <span class="comment">// Wildcards should not be valid for public registry controlled domains, |
| // and unknown/unrecognized domains, at least three domain components must |
| // be present. For mozilla::pkix and NSS, there must always be at least two |
| // labels after the wildcard label. |
| </span>(<span class="string">b"*.test.example"</span>, <span class="string">b"www.test.example"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"*.example.co.uk"</span>, <span class="string">b"test.example.co.uk"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"*.example"</span>, <span class="string">b"test.example"</span>, <span class="prelude-val">None</span>), |
| <span class="comment">// The result is different than Chromium, because Chromium takes into account |
| // the additional knowledge it has that "co.uk" is a TLD. mozilla::pkix does |
| // not know that. |
| </span>(<span class="string">b"*.co.uk"</span>, <span class="string">b"example.co.uk"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"*.com"</span>, <span class="string">b"foo.com"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"*.us"</span>, <span class="string">b"foo.us"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"*"</span>, <span class="string">b"foo"</span>, <span class="prelude-val">None</span>), |
| <span class="comment">// IDN variants of wildcards and registry controlled domains. |
| </span>( |
| <span class="string">b"*.xn--poema-9qae5a.com.br"</span>, |
| <span class="string">b"www.xn--poema-9qae5a.com.br"</span>, |
| <span class="prelude-val">Some</span>(<span class="bool-val">true</span>), |
| ), |
| ( |
| <span class="string">b"*.example.xn--mgbaam7a8h"</span>, |
| <span class="string">b"test.example.xn--mgbaam7a8h"</span>, |
| <span class="prelude-val">Some</span>(<span class="bool-val">true</span>), |
| ), |
| <span class="comment">// RFC6126 allows this, and NSS accepts it, but Chromium disallows it. |
| // TODO: File bug against Chromium. |
| </span>(<span class="string">b"*.com.br"</span>, <span class="string">b"xn--poema-9qae5a.com.br"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"*.xn--mgbaam7a8h"</span>, <span class="string">b"example.xn--mgbaam7a8h"</span>, <span class="prelude-val">None</span>), |
| <span class="comment">// Wildcards should be permissible for 'private' registry-controlled |
| // domains. (In mozilla::pkix, we do not know if it is a private registry- |
| // controlled domain or not.) |
| </span>(<span class="string">b"*.appspot.com"</span>, <span class="string">b"www.appspot.com"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"*.s3.amazonaws.com"</span>, <span class="string">b"foo.s3.amazonaws.com"</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| <span class="comment">// Multiple wildcards are not valid. |
| </span>(<span class="string">b"*.*.com"</span>, <span class="string">b"foo.example.com"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"*.bar.*.com"</span>, <span class="string">b"foo.bar.example.com"</span>, <span class="prelude-val">None</span>), |
| <span class="comment">// Absolute vs relative DNS name tests. Although not explicitly specified |
| // in RFC 6125, absolute reference names (those ending in a .) should |
| // match either absolute or relative presented names. |
| // TODO: File errata against RFC 6125 about this. |
| </span>(<span class="string">b"foo.com."</span>, <span class="string">b"foo.com"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"foo.com"</span>, <span class="string">b"foo.com."</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"foo.com."</span>, <span class="string">b"foo.com."</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"f."</span>, <span class="string">b"f"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"f"</span>, <span class="string">b"f."</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"f."</span>, <span class="string">b"f."</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"*.bar.foo.com."</span>, <span class="string">b"www-3.bar.foo.com"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"*.bar.foo.com"</span>, <span class="string">b"www-3.bar.foo.com."</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>)), |
| (<span class="string">b"*.bar.foo.com."</span>, <span class="string">b"www-3.bar.foo.com."</span>, <span class="prelude-val">None</span>), |
| <span class="comment">// We require the reference ID to be a valid DNS name, so we cannot test this |
| // case. |
| // (b".", b".", Some(false)), |
| </span>(<span class="string">b"*.com."</span>, <span class="string">b"example.com"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"*.com"</span>, <span class="string">b"example.com."</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"*.com."</span>, <span class="string">b"example.com."</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"*."</span>, <span class="string">b"foo."</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"*."</span>, <span class="string">b"foo"</span>, <span class="prelude-val">None</span>), |
| <span class="comment">// The result is different than Chromium because we don't know that co.uk is |
| // a TLD. |
| </span>(<span class="string">b"*.co.uk."</span>, <span class="string">b"foo.co.uk"</span>, <span class="prelude-val">None</span>), |
| (<span class="string">b"*.co.uk."</span>, <span class="string">b"foo.co.uk."</span>, <span class="prelude-val">None</span>), |
| ]; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>presented_matches_reference_test() { |
| <span class="kw">for </span><span class="kw-2">&</span>(presented, reference, expected_result) <span class="kw">in </span>PRESENTED_MATCHES_REFERENCE { |
| <span class="kw">use </span>std::string::String; |
| |
| <span class="kw">let </span>actual_result = presented_dns_id_matches_reference_dns_id( |
| untrusted::Input::from(presented), |
| untrusted::Input::from(reference), |
| ); |
| <span class="macro">assert_eq!</span>( |
| actual_result, |
| expected_result, |
| <span class="string">"presented_dns_id_matches_reference_dns_id(\"{}\", IDRole::ReferenceID, \"{}\")"</span>, |
| String::from_utf8_lossy(presented), |
| String::from_utf8_lossy(reference) |
| ); |
| } |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="webpki" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |