From 5d59ae970232332300c3000304bffba78ec1d017 Mon Sep 17 00:00:00 2001
From: tb <tb@openbsd.org>
Date: Tue, 20 Feb 2018 17:38:15 +0000
Subject: [PATCH] Provide DH_{clear,set,test}_flags().

ok jsing
---
 lib/libcrypto/Symbols.list |  3 +++
 lib/libcrypto/dh/dh.h      |  5 ++++-
 lib/libcrypto/dh/dh_lib.c  | 20 +++++++++++++++++++-
 3 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/lib/libcrypto/Symbols.list b/lib/libcrypto/Symbols.list
index 2252220278c..5a5df4702b8 100644
--- a/lib/libcrypto/Symbols.list
+++ b/lib/libcrypto/Symbols.list
@@ -755,6 +755,7 @@ DES_xcbc_encrypt
 DH_OpenSSL
 DH_check
 DH_check_pub_key
+DH_clear_flags
 DH_compute_key
 DH_free
 DH_generate_key
@@ -771,8 +772,10 @@ DH_set0_key
 DH_set0_pqg
 DH_set_default_method
 DH_set_ex_data
+DH_set_flags
 DH_set_method
 DH_size
+DH_test_flags
 DH_up_ref
 DHparams_dup
 DHparams_it
diff --git a/lib/libcrypto/dh/dh.h b/lib/libcrypto/dh/dh.h
index f1c51850eb5..39e8d093e56 100644
--- a/lib/libcrypto/dh/dh.h
+++ b/lib/libcrypto/dh/dh.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: dh.h,v 1.21 2018/02/18 14:58:12 tb Exp $ */
+/* $OpenBSD: dh.h,v 1.22 2018/02/20 17:38:15 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -193,6 +193,9 @@ void DH_get0_pqg(const DH *dh, const BIGNUM **p, const BIGNUM **q,
 int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g);
 void DH_get0_key(const DH *dh, const BIGNUM **pub_key, const BIGNUM **priv_key);
 int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key);
+void DH_clear_flags(DH *dh, int flags);
+int DH_test_flags(const DH *dh, int flags);
+void DH_set_flags(DH *dh, int flags);
 
 /* Deprecated version */
 #ifndef OPENSSL_NO_DEPRECATED
diff --git a/lib/libcrypto/dh/dh_lib.c b/lib/libcrypto/dh/dh_lib.c
index bb2ca426a0c..e5e8b9146b9 100644
--- a/lib/libcrypto/dh/dh_lib.c
+++ b/lib/libcrypto/dh/dh_lib.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: dh_lib.c,v 1.25 2018/02/18 14:58:12 tb Exp $ */
+/* $OpenBSD: dh_lib.c,v 1.26 2018/02/20 17:38:15 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -300,3 +300,21 @@ DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key)
 
 	return 1;
 }
+
+void
+DH_clear_flags(DH *dh, int flags)
+{
+	dh->flags &= ~flags;
+}
+
+int
+DH_test_flags(const DH *dh, int flags)
+{
+	return dh->flags & flags;
+}
+
+void
+DH_set_flags(DH *dh, int flags)
+{
+	dh->flags |= flags;
+}
-- 
2.20.1