From 786ee180cd88787849dec390c8946c3de8b6d97c Mon Sep 17 00:00:00 2001
From: Rushil Mehra <rmehra@cloudflare.com>
Date: Tue, 13 Aug 2024 17:35:43 -0700
Subject: [PATCH] Expose X509NameRef::print_ex

---
 boring/src/x509/mod.rs | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/boring/src/x509/mod.rs b/boring/src/x509/mod.rs
index a90a4934..b234bd2b 100644
--- a/boring/src/x509/mod.rs
+++ b/boring/src/x509/mod.rs
@@ -26,7 +26,7 @@ use crate::asn1::{
     Asn1BitStringRef, Asn1IntegerRef, Asn1Object, Asn1ObjectRef, Asn1StringRef, Asn1TimeRef,
     Asn1Type,
 };
-use crate::bio::MemBioSlice;
+use crate::bio::{MemBio, MemBioSlice};
 use crate::conf::ConfRef;
 use crate::error::ErrorStack;
 use crate::ex_data::Index;
@@ -1044,6 +1044,20 @@ impl X509NameRef {
         }
     }
 
+    /// Returns an owned String representing the X509 name configurable via incoming flags.
+    ///
+    /// This function will return `None` if the underlying string contains invalid utf-8.
+    #[corresponds(X509_NAME_print_ex)]
+    pub fn print_ex(&self, flags: i32) -> Option<String> {
+        unsafe {
+            let bio = MemBio::new().ok()?;
+            ffi::X509_NAME_print_ex(bio.as_ptr(), self.as_ptr(), 0, flags as _);
+            let buf = bio.get_buf().to_vec();
+            let res = String::from_utf8(buf);
+            res.ok()
+        }
+    }
+
     to_der! {
         /// Serializes the certificate into a DER-encoded X509 name structure.
         ///