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use asn1_rs::Set;
use oid_registry::{
OID_PKCS1_SHA256WITHRSA, OID_PKCS9_CHALLENGE_PASSWORD, OID_SIG_ECDSA_WITH_SHA256,
OID_X509_COMMON_NAME,
};
use x509_parser::prelude::*;
const CSR_DATA_EMPTY_ATTRIB: &[u8] = include_bytes!("../assets/csr-empty-attributes.csr");
const CSR_DATA: &[u8] = include_bytes!("../assets/test.csr");
const CSR_CHALLENGE_PASSWORD: &[u8] = include_bytes!("../assets/csr-challenge-password.pem");
#[test]
fn read_csr_empty_attrib() {
let (rem, csr) =
X509CertificationRequest::from_der(CSR_DATA_EMPTY_ATTRIB).expect("could not parse CSR");
assert!(rem.is_empty());
let cri = &csr.certification_request_info;
assert_eq!(cri.version, X509Version(0));
assert_eq!(cri.attributes().len(), 0);
assert_eq!(csr.signature_algorithm.algorithm, OID_PKCS1_SHA256WITHRSA);
}
#[test]
fn read_csr_with_san() {
let der = pem::parse_x509_pem(CSR_DATA).unwrap().1;
let (rem, csr) =
X509CertificationRequest::from_der(&der.contents).expect("could not parse CSR");
assert!(rem.is_empty());
let cri = &csr.certification_request_info;
assert_eq!(cri.version, X509Version(0));
assert_eq!(cri.attributes().len(), 1);
assert_eq!(csr.signature_algorithm.algorithm, OID_SIG_ECDSA_WITH_SHA256);
let mut rdns = cri.subject.iter();
let rdn = rdns.next().unwrap();
let first = rdn.iter().next().unwrap();
assert_eq!(first.attr_type(), &OID_X509_COMMON_NAME);
assert_eq!(first.as_str().unwrap(), "test.rusticata.fr");
let expected: &[u8] = &[
4, 195, 245, 126, 177, 113, 192, 146, 215, 136, 181, 58, 82, 138, 142, 61, 253, 245, 185,
192, 166, 216, 218, 145, 219, 42, 169, 112, 122, 58, 91, 184, 150, 37, 237, 245, 59, 54,
44, 210, 44, 207, 218, 167, 148, 189, 210, 159, 207, 103, 233, 1, 187, 134, 137, 24, 240,
188, 223, 135, 215, 71, 80, 64, 65,
];
assert_eq!(cri.subject_pki.subject_public_key.data, expected);
let mut extensions = csr.requested_extensions().unwrap();
match extensions.next().unwrap() {
ParsedExtension::SubjectAlternativeName(san) => {
let name = san.general_names.first().unwrap();
assert!(matches!(name, GeneralName::DNSName("test.rusticata.fr")));
}
_ => unreachable!(),
}
}
#[test]
fn read_csr_with_challenge_password() {
let der = pem::parse_x509_pem(CSR_CHALLENGE_PASSWORD).unwrap().1;
let (rem, csr) = X509CertificationRequest::from_der(&der.contents)
.expect("Could not parse CSR with challenge password");
assert!(rem.is_empty());
let cri = &csr.certification_request_info;
assert_eq!(cri.version, X509Version(0));
assert_eq!(cri.attributes().len(), 2);
let challenge_password_attr = csr
.certification_request_info
.find_attribute(&OID_PKCS9_CHALLENGE_PASSWORD)
.expect("Challenge password not found in CSR");
// 1. Check: Parse value
let (rem, challenge_password_from_value) =
Set::from_der_and_then(challenge_password_attr.value, String::from_der)
.expect("Error parsing challenge password attribute");
assert_eq!(challenge_password_from_value, "A challenge password");
assert!(rem.is_empty());
// 2. Check: Get value directly from parsed attribute
if let ParsedCriAttribute::ChallengePassword(challenge_password_from_parsed_attribute) =
challenge_password_attr.parsed_attribute()
{
assert_eq!(
challenge_password_from_parsed_attribute.0,
"A challenge password"
);
} else {
panic!("Parsed attribute is not a challenge password");
}
// Make sure we can read requested extensions
let extensions = csr
.requested_extensions()
.expect("Didn't find requested extensions in CSR");
let mut found_san = false;
for extension in extensions {
if let ParsedExtension::SubjectAlternativeName(san) = extension {
let name = san.general_names.get(2).unwrap();
assert!(matches!(name, GeneralName::DNSName("localhost")));
found_san = true;
}
}
assert!(found_san);
}
#[cfg(feature = "verify")]
#[test]
fn read_csr_verify() {
let der = pem::parse_x509_pem(CSR_DATA).unwrap().1;
let (_, csr) = X509CertificationRequest::from_der(&der.contents).expect("could not parse CSR");
csr.verify_signature().unwrap();
let mut der = pem::parse_x509_pem(CSR_DATA).unwrap().1;
assert_eq!(&der.contents[28..37], b"rusticata");
for (i, b) in b"foobarbaz".iter().enumerate() {
der.contents[28 + i] = *b;
}
assert_eq!(&der.contents[28..37], b"foobarbaz");
let (_, csr) = X509CertificationRequest::from_der(&der.contents).expect("could not parse CSR");
csr.verify_signature().unwrap_err();
}
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