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Add X509::get_ext_by_obj
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This function allows retrieving extensions from X509 certificates using
ASN1 Object IDs.
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wiktor-k committed Feb 13, 2024
1 parent 84906e4 commit 7dc6281
Showing 1 changed file with 32 additions and 0 deletions.
32 changes: 32 additions & 0 deletions openssl/src/x509/mod.rs
Original file line number Diff line number Diff line change
Expand Up @@ -449,6 +449,38 @@ impl X509Ref {
}
}

/// Returns this certificate's extensions for the given [Asn1Object].
///
/// # Examples
///
/// ```
/// use openssl::asn1::Asn1Object;
/// use openssl::x509::X509;
///
/// let cert = X509::from_pem(include_bytes!("../../test/extensions.pem")).unwrap();
/// let obj = Asn1Object::from_str(&"1.3.6.1.4.1.41482.5.3").unwrap();
/// let extension = cert.get_ext_by_obj(&obj).unwrap().unwrap();
/// let value = extension.data().as_slice();
/// assert_eq!(value, [4, 3, 5, 2, 7]);
/// ```
#[corresponds(X509_get_ext_by_OBJ)]
pub fn get_ext_by_obj(
&self,
obj: &Asn1ObjectRef,
) -> Result<Option<&X509ExtensionRef>, ErrorStack> {
unsafe {
let loc = ffi::X509_get_ext_by_OBJ(self.as_ptr(), obj.as_ptr(), -1);
Ok(if loc >= 0 {
Some(X509ExtensionRef::from_ptr(cvt_p(ffi::X509_get_ext(
self.as_ptr(),
loc,
))?))
} else {
None
})
}
}

/// Returns this certificate's subject alternative name entries, if they exist.
#[corresponds(X509_get_ext_d2i)]
pub fn subject_alt_names(&self) -> Option<Stack<GeneralName>> {
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