OwnedTrustAnchor: subject is a DistinguishedName

Store the subject field as the DistinguishedName type, and also return
&DistinguishedName from subject().

rustls/src/anchors.rs

@@ -1,12 +1,12 @@
-use crate::key;
 #[cfg(feature = "logging")]
 use crate::log::{debug, trace};
+use crate::{key, DistinguishedName};
 use crate::{CertificateError, Error};
 
 /// A trust anchor, commonly known as a "Root Certificate."
 #[derive(Debug, Clone)]
 pub struct OwnedTrustAnchor {
-    subject: Vec<u8>,
+    subject: DistinguishedName,
     spki: Vec<u8>,
     name_constraints: Option<Vec<u8>>,
 }
@@ -15,7 +15,7 @@ impl OwnedTrustAnchor {
     /// Get a `webpki::TrustAnchor` by borrowing the owned elements.
     pub(crate) fn to_trust_anchor(&self) -> webpki::TrustAnchor {
         webpki::TrustAnchor {
-            subject: &self.subject,
+            subject: self.subject.as_ref(),
             spki: &self.spki,
             name_constraints: self.name_constraints.as_deref(),
         }
@@ -41,7 +41,7 @@ impl OwnedTrustAnchor {
         name_constraints: Option<impl Into<Vec<u8>>>,
     ) -> Self {
         Self {
-            subject: subject.into(),
+            subject: DistinguishedName::from(subject.into()),
             spki: spki.into(),
             name_constraints: name_constraints.map(|x| x.into()),
         }
@@ -55,7 +55,7 @@ impl OwnedTrustAnchor {
     /// use x509_parser::prelude::FromDer;
     /// println!("{}", x509_parser::x509::X509Name::from_der(anchor.subject())?.1);
     /// ```
-    pub fn subject(&self) -> &[u8] {
+    pub fn subject(&self) -> &DistinguishedName {
         &self.subject
     }
 }

rustls/src/server/tls12.rs

@@ -40,8 +40,8 @@ mod client_hello {
     use crate::msgs::handshake::{ClientExtension, SessionID};
     use crate::msgs::handshake::{ClientHelloPayload, ServerHelloPayload};
     use crate::msgs::handshake::{ServerExtension, ServerKeyExchangePayload};
+    use crate::sign;
     use crate::verify::DigitallySignedStruct;
-    use crate::{sign, DistinguishedName};
 
     use super::*;
 
@@ -450,9 +450,7 @@ mod client_hello {
         let names = config
             .verifier
             .client_auth_root_subjects()
-            .iter()
-            .map(|n| DistinguishedName::from(n.clone()))
-            .collect::<Vec<_>>();
+            .to_vec();
 
         let cr = CertificateRequestPayload {
             certtypes: vec![

rustls/src/server/tls13.rs

@@ -41,6 +41,7 @@ pub(super) use client_hello::CompleteClientHelloHandling;
 
 mod client_hello {
     use crate::enums::SignatureScheme;
+    use crate::kx;
     use crate::msgs::base::{Payload, PayloadU8};
     use crate::msgs::ccs::ChangeCipherSpecPayload;
     use crate::msgs::enums::NamedGroup;
@@ -65,7 +66,6 @@ mod client_hello {
         KeyScheduleEarly, KeyScheduleHandshake, KeySchedulePreHandshake,
     };
     use crate::verify::DigitallySignedStruct;
-    use crate::{kx, DistinguishedName};
 
     use super::*;
 
@@ -699,9 +699,7 @@ mod client_hello {
         let names = config
             .verifier
             .client_auth_root_subjects()
-            .iter()
-            .map(|n| DistinguishedName::from(n.clone()))
-            .collect::<Vec<_>>();
+            .to_vec();
 
         if !names.is_empty() {
             cr.extensions

rustls/src/verify.rs

@@ -551,7 +551,7 @@ impl AllowAnyAuthenticatedClient {
             subjects: roots
                 .roots
                 .iter()
-                .map(|r| DistinguishedName::from(r.subject().to_vec()))
+                .map(|r| r.subject().clone())
                 .collect::<Vec<_>>(),
             roots,
         }
@@ -615,7 +615,7 @@ impl AllowAnyAnonymousOrAuthenticatedClient {
                 subjects: roots
                     .roots
                     .iter()
-                    .map(|r| DistinguishedName::from(r.subject().to_vec()))
+                    .map(|r| r.subject().clone())
                     .collect::<Vec<_>>(),
                 roots,
             },

rustls/tests/client_cert_verifier.rs

@@ -53,7 +53,7 @@ fn client_verifier_works() {
             subjects: get_client_root_store(*kt)
                 .roots
                 .iter()
-                .map(|r| DistinguishedName::from(r.subject().to_vec()))
+                .map(|r| r.subject().clone())
                 .collect(),
             mandatory: true,
             offered_schemes: None,
@@ -81,7 +81,7 @@ fn client_verifier_no_schemes() {
             subjects: get_client_root_store(*kt)
                 .roots
                 .iter()
-                .map(|r| DistinguishedName::from(r.subject().to_vec()))
+                .map(|r| r.subject().clone())
                 .collect(),
             mandatory: true,
             offered_schemes: Some(vec![]),
@@ -114,7 +114,7 @@ fn client_verifier_no_auth_yes_root() {
             subjects: get_client_root_store(*kt)
                 .roots
                 .iter()
-                .map(|r| DistinguishedName::from(r.subject().to_vec()))
+                .map(|r| r.subject().clone())
                 .collect(),
             mandatory: true,
             offered_schemes: None,
@@ -151,7 +151,7 @@ fn client_verifier_fails_properly() {
             subjects: get_client_root_store(*kt)
                 .roots
                 .iter()
-                .map(|r| DistinguishedName::from(r.subject().to_vec()))
+                .map(|r| r.subject().clone())
                 .collect(),
             mandatory: true,
             offered_schemes: None,