1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
//! ref: composer/src/Composer/Util/TlsHelper.php
use shirabe_external_packages::composer::ca_bundle::ca_bundle::CaBundle;
use shirabe_external_packages::composer::pcre::Preg;
use shirabe_php_shim::{
PhpMixed, ltrim, preg_quote, str_replace, strtolower, substr, substr_count,
};
/// Extracted certificate names. Mirrors PHP's `array{cn: string, san: string[]}`.
#[derive(Debug, Clone)]
pub struct CertificateNames {
pub cn: String,
pub san: Vec<String>,
}
/// Match hostname against a certificate.
///
/// @deprecated Use composer/ca-bundle and composer/composer 2.2 if you still need PHP 5
/// compatibility, this class will be removed in Composer 3.0
#[derive(Debug)]
pub struct TlsHelper;
impl TlsHelper {
/// Match hostname against a certificate. Sets `cn` to the common name of the
/// certificate iff a match is found.
pub fn check_certificate_host(
certificate: &PhpMixed,
hostname: &str,
cn: &mut Option<String>,
) -> bool {
let names = Self::get_certificate_names(certificate);
let Some(names) = names else {
return false;
};
let mut combined_names = names.san.clone();
combined_names.push(names.cn.clone());
let hostname = strtolower(hostname);
for cert_name in &combined_names {
let matcher = Self::cert_name_matcher(cert_name);
if let Some(matcher) = matcher
&& matcher(&hostname)
{
*cn = Some(names.cn.clone());
return true;
}
}
false
}
/// Extract DNS names out of an X.509 certificate.
pub fn get_certificate_names(certificate: &PhpMixed) -> Option<CertificateNames> {
let info: Option<&PhpMixed> = if certificate.as_array().is_some() {
Some(certificate)
} else if CaBundle::is_openssl_parse_safe() {
// TODO(phase-c): openssl_x509_parse on a PEM string certificate.
todo!("openssl_x509_parse for non-array certificates")
} else {
None
};
let info = info?.as_array()?;
let common_name = info
.get("subject")
.and_then(|s| s.as_array())
.and_then(|s| s.get("commonName"))
.and_then(|c| c.as_string());
let common_name = strtolower(common_name?);
let mut subject_alt_names: Vec<String> = Vec::new();
if let Some(san) = info
.get("extensions")
.and_then(|e| e.as_array())
.and_then(|e| e.get("subjectAltName"))
.and_then(|s| s.as_string())
{
let split = Preg::split("{\\s*,\\s*}", san);
subject_alt_names = split
.into_iter()
.filter_map(|name| {
if name.starts_with("DNS:") {
Some(strtolower(<rim(&substr(&name, 4, None), None)))
} else {
None
}
})
.collect();
}
Some(CertificateNames {
cn: common_name,
san: subject_alt_names,
})
}
/// Get the certificate pin.
pub fn get_certificate_fingerprint(_certificate: &str) -> String {
todo!("openssl public key extraction and sha1 fingerprint")
}
/// Test if it is safe to use the PHP function openssl_x509_parse().
pub fn is_openssl_parse_safe() -> bool {
CaBundle::is_openssl_parse_safe()
}
/// Convert certificate name into matching function.
fn cert_name_matcher(cert_name: &str) -> Option<Box<dyn Fn(&str) -> bool>> {
let wildcards = substr_count(cert_name, "*");
if wildcards == 0 {
// Literal match.
let cert_name = cert_name.to_string();
return Some(Box::new(move |hostname: &str| hostname == cert_name));
}
if wildcards == 1 {
let components: Vec<&str> = cert_name.split('.').collect();
if components.len() < 3 {
// Must have 3+ components
return None;
}
let first_component = components[0];
// Wildcard must be the last character.
if !first_component.ends_with('*') {
return None;
}
let mut wildcard_regex = preg_quote(cert_name, None);
wildcard_regex = str_replace("\\*", "[a-z0-9-]+", &wildcard_regex);
let wildcard_regex = format!("{{^{}$}}", wildcard_regex);
return Some(Box::new(move |hostname: &str| {
Preg::is_match(&wildcard_regex, hostname)
}));
}
None
}
}
|
