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-- Copyright 2018 Google LLC
--
-- Licensed under the Apache License, Version 2.0 (the "License"); you may not
-- use this file except in compliance with the License. You may obtain a copy of
-- the License at
--
-- https://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-- WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-- License for the specific language governing permissions and limitations under
-- the License.
module BTLS.BoringSSL.Obj
( objNID2SN
) where
import Foreign (nullPtr)
import Foreign.C (CString, peekCString)
#include <openssl/obj.h>
{#fun pure OBJ_nid2sn as objNID2SN
{`Int'} -> `Maybe String' peekCStringOrNull*#}
peekCStringOrNull :: CString -> IO (Maybe String)
peekCStringOrNull ptr
| ptr == nullPtr = return Nothing
| otherwise = Just <$> peekCString ptr
|
