Unverified Commit cc8eced7 authored by Geoff Thomas's avatar Geoff Thomas
Browse files

Add support for CRL extensions and the Authority Information Access extension

parent 99bce5b3

openssl/src/x509/mod.rs

+41 −0
Original line number Diff line number Diff line
@@ -1746,6 +1746,17 @@ unsafe impl ExtensionType for CertificateIssuer { 
    type Output = Stack<GeneralName>;

}



/// The CRL extension identifying how to access information and services for the issuer of the CRL

pub enum AuthorityInformationAccess {}



// SAFETY: AuthorityInformationAccess is defined to be a stack of AccessDescription in the RFC

// and in OpenSSL.

unsafe impl ExtensionType for AuthorityInformationAccess {

    const NID: Nid = Nid::from_raw(ffi::NID_info_access);



    type Output = Stack<AccessDescription>;

}



foreign_type_and_impl_send_sync! {

    type CType = ffi::X509_CRL;

    fn drop = ffi::X509_CRL_free;
@@ -1915,6 +1926,36 @@ impl X509CrlRef { 
    {

        unsafe { cvt_n(ffi::X509_CRL_verify(self.as_ptr(), key.as_ptr())).map(|n| n != 0) }

    }



    /// Get the criticality and value of an extension.

    ///

    /// This returns None if the extension is not present or occurs multiple times.

    #[corresponds(X509_CRL_get_ext_d2i)]

    pub fn extension<T: ExtensionType>(&self) -> Result<Option<(bool, T::Output)>, ErrorStack> {

        let mut critical = -1;

        let out = unsafe {

            // SAFETY: self.as_ptr() is a valid pointer to an X509_CRL.

            let ext = ffi::X509_CRL_get_ext_d2i(

                self.as_ptr(),

                T::NID.as_raw(),

                &mut critical as *mut _,

                ptr::null_mut(),

            );

            // SAFETY: Extensions's contract promises that the type returned by

            // OpenSSL here is T::Output.

            T::Output::from_ptr_opt(ext as *mut _)

        };

        match (critical, out) {

            (0, Some(out)) => Ok(Some((false, out))),

            (1, Some(out)) => Ok(Some((true, out))),

            // -1 means the extension wasn't found, -2 means multiple were found.

            (-1 | -2, _) => Ok(None),

            // A critical value of 0 or 1 suggests success, but a null pointer

            // was returned so something went wrong.

            (0 | 1, None) => Err(ErrorStack::get()),

            (c_int::MIN..=-2 | 2.., _) => panic!("OpenSSL should only return -2, -1, 0, or 1 for an extension's criticality but it returned {}", critical),

        }

    }

}



/// The result of peer certificate verification.

openssl/src/x509/tests.rs

+12 −1
Original line number Diff line number Diff line
@@ -34,7 +34,7 @@ use hex::{self, FromHex}; 
#[cfg(any(ossl102, libressl261))]

use libc::time_t;



use super::{CertificateIssuer, ReasonCode};

use super::{AuthorityInformationAccess, CertificateIssuer, ReasonCode};



fn pkey() -> PKey<Private> {

    let rsa = Rsa::generate(2048).unwrap();
@@ -701,6 +701,17 @@ fn test_crl_entry_extensions() { 
    let crl = include_bytes!("../../test/entry_extensions.crl");

    let crl = X509Crl::from_pem(crl).unwrap();



    let (critical, access_info) = crl

        .extension::<AuthorityInformationAccess>()

        .unwrap()

        .expect("Authority Information Access extension should be present");

    assert!(!critical, "Authority Information Access extension is not critical");

    assert_eq!(access_info.len(), 1, "Authority Information Access should have one entry");

    assert_eq!(access_info[0].method().to_string(), "CA Issuers");

    assert_eq!(

        access_info[0].location().uri(),

        Some("http://www.example.com/ca.crt")

    );

    let revoked_certs = crl.get_revoked().unwrap();

    let entry = &revoked_certs[0];

openssl/test/entry_extensions.crl

+9 −8
Original line number Diff line number Diff line 
-----BEGIN X509 CRL-----

MIIBXDCCAQICAQEwCgYIKoZIzj0EAwIwETEPMA0GA1UEAwwGQ1JMIENBFw0yMzAz

MjgwOTQ5MThaFw0yMzA0MDQwOTUwMDdaMIGAMH4CFE+Y95/1pOqa6c9fUEJ8c04k

xu2PFw0yMzAzMjgwOTQ3MzNaMFcwLwYDVR0dAQH/BCUwI6QhMB8xCzAJBgNVBAYT

AkdCMRAwDgYDVQQDDAdUZXN0IENBMAoGA1UdFQQDCgEBMBgGA1UdGAQRGA8yMDIz

MDMyODA5NDQ0MFqgPTA7MB8GA1UdIwQYMBaAFNX1GZ0RWuC+4gz1wuy5H32T2W+R

MAoGA1UdFAQDAgEUMAwGA1UdHAQFMAOEAf8wCgYIKoZIzj0EAwIDSAAwRQIgbl7x

W+WVAb+zlvKcJLmHVuC+gbqR4jqwGIHHgQl2J8kCIQCo/sAF5sDqy/cL+fbzBeUe

YoY2h6lIkj9ENwU8ZCt03w==

MIIBojCCAUkCAQEwCgYIKoZIzj0EAwIwHTEbMBkGA1UEAwwSY3J5cHRvZ3JhcGh5

LmlvIENBFw0yMzA3MjUxNDA1MzlaFw0yMzA4MDExNDA1MzlaMIGAMH4CFE+Y95/1

pOqa6c9fUEJ8c04kxu2PFw0yMzA3MjUxNDA1MzlaMFcwLwYDVR0dAQH/BCUwI6Qh

MB8xCzAJBgNVBAYTAkdCMRAwDgYDVQQDDAdUZXN0IENBMAoGA1UdFQQDCgEBMBgG

A1UdGAQRGA8yMDIzMDcyNTE0MDUzOVqgeDB2MB8GA1UdIwQYMBaAFK6qKNgsGefh

XexO9WsIwiQ/73R8MAoGA1UdFAQDAgEUMAwGA1UdHAQFMAOEAf8wOQYIKwYBBQUH

AQEELTArMCkGCCsGAQUFBzAChh1odHRwOi8vd3d3LmV4YW1wbGUuY29tL2NhLmNy

dDAKBggqhkjOPQQDAgNHADBEAiB22SXxFnQUB41uxfyCvg2dAs2nFiR0r8jft/cd

G8zcKAIgeYkNOzRn4lyopK6J94rhm8jIIuJRj3Ns9XcH+91N370=

-----END X509 CRL-----