Prepare to provide UI_null()

xmlsec needs this, nothing else. Our linkers link libxmlsec1-openssl,
only warns and since nothing uses this library in ports, this wasn't
noticed for a long time.

Reported by Thomas Mitterfellner

ok jsing

1 files changed, 18 insertions, 0 deletions

diff --git a/src/lib/libcrypto/ui/ui_null.c b/src/lib/libcrypto/ui/ui_null.c
new file mode 100644
index 0000000000..7bb7a90b2f
--- /dev/null
+++ b/src/lib/libcrypto/ui/ui_null.c
@@ -0,0 +1,18 @@
+/*      $OpenBSD: ui_null.c,v 1.1 2022/12/17 21:59:39 tb Exp $ */
+
+/*
+ * Written by Theo Buehler. Public domain.
+ */
+
+#include "ui_local.h"
+
+static const UI_METHOD ui_null = {
+        .name = "OpenSSL NULL UI",
+};
+
+const UI_METHOD *
+UI_null(void)
+{
+        return &ui_null;
+}
+LCRYPTO_ALIAS(UI_null)