Provide X509_get0_serialNumber()

tested in a bulk by sthen
ok jsing

3 files changed, 10 insertions, 2 deletions

diff --git a/src/lib/libcrypto/Symbols.list b/src/lib/libcrypto/Symbols.list
index dc11ea497f..191e967e34 100644
--- a/src/lib/libcrypto/Symbols.list
+++ b/src/lib/libcrypto/Symbols.list
@@ -3016,6 +3016,7 @@ X509_get_ext_d2i
 X509_get_issuer_name
 X509_get_pubkey
 X509_get_pubkey_parameters
+X509_get0_serialNumber
 X509_get_serialNumber
 X509_get_signature_nid
 X509_get_signature_type
diff --git a/src/lib/libcrypto/x509/x509.h b/src/lib/libcrypto/x509/x509.h
index e6b205b7fc..25af8314b2 100644
--- a/src/lib/libcrypto/x509/x509.h
+++ b/src/lib/libcrypto/x509/x509.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: x509.h,v 1.70 2018/08/24 19:55:58 tb Exp $ */
+/* $OpenBSD: x509.h,v 1.71 2018/08/24 19:59:32 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -979,6 +979,7 @@ int 		X509_set_version(X509 *x, long version);
 long            X509_get_version(const X509 *x);
 int             X509_set_serialNumber(X509 *x, ASN1_INTEGER *serial);
 ASN1_INTEGER *  X509_get_serialNumber(X509 *x);
+const ASN1_INTEGER *X509_get0_serialNumber(const X509 *x);
 int             X509_set_issuer_name(X509 *x, X509_NAME *name);
 X509_NAME *     X509_get_issuer_name(const X509 *a);
 int             X509_set_subject_name(X509 *x, X509_NAME *name);
diff --git a/src/lib/libcrypto/x509/x509_cmp.c b/src/lib/libcrypto/x509/x509_cmp.c
index 6819c3b1f7..2141f871e5 100644
--- a/src/lib/libcrypto/x509/x509_cmp.c
+++ b/src/lib/libcrypto/x509/x509_cmp.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: x509_cmp.c,v 1.33 2018/05/18 19:24:08 tb Exp $ */
+/* $OpenBSD: x509_cmp.c,v 1.34 2018/08/24 19:59:32 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -176,6 +176,12 @@ X509_get_serialNumber(X509 *a)
         return (a->cert_info->serialNumber);
 }
 
+const ASN1_INTEGER *
+X509_get0_serialNumber(const X509 *a)
+{
+        return (a->cert_info->serialNumber);
+}
+
 unsigned long
 X509_subject_name_hash(X509 *x)
 {