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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.
{-# OPTIONS_GHC -Wno-missing-methods #-}
module BTLS.BoringSSL.Digest
( evpMD5, evpSHA1, evpSHA224, evpSHA256, evpSHA384, evpSHA512
, mallocEVPMDCtx
, evpDigestInitEx, evpDigestUpdate, evpDigestFinalEx
, evpMaxMDSize
, evpMDType
) where
import Data.ByteString (ByteString)
import Foreign
(FinalizerPtr, ForeignPtr, Ptr, Storable(alignment, sizeOf), withForeignPtr)
import Foreign.C.Types
{#import BTLS.BoringSSL.Base#}
import BTLS.Buffer (unsafeUseAsCBuffer)
import BTLS.CreateWithFinalizer (createWithFinalizer)
import BTLS.Result
#include <openssl/digest.h>
{#fun pure EVP_md5 as evpMD5 {} -> `Ptr EVPMD'#}
{#fun pure EVP_sha1 as evpSHA1 {} -> `Ptr EVPMD'#}
{#fun pure EVP_sha224 as evpSHA224 {} -> `Ptr EVPMD'#}
{#fun pure EVP_sha256 as evpSHA256 {} -> `Ptr EVPMD'#}
{#fun pure EVP_sha384 as evpSHA384 {} -> `Ptr EVPMD'#}
{#fun pure EVP_sha512 as evpSHA512 {} -> `Ptr EVPMD'#}
-- | Memory-safe allocator for 'EVPMDCtx'.
mallocEVPMDCtx :: IO (ForeignPtr EVPMDCtx)
mallocEVPMDCtx =
createWithFinalizer {#call EVP_MD_CTX_init as ^#} btlsFinalizeEVPMDCtxPtr
foreign import ccall "&btlsFinalizeEVPMDCtx"
btlsFinalizeEVPMDCtxPtr :: FinalizerPtr EVPMDCtx
{#fun EVP_DigestInit_ex as evpDigestInitEx
{withForeignPtr* `ForeignPtr EVPMDCtx', `Ptr EVPMD', `Ptr Engine'}
-> `()' requireSuccess*-#}
{#fun EVP_DigestUpdate as evpDigestUpdate
{withForeignPtr* `ForeignPtr EVPMDCtx', unsafeUseAsCBuffer* `ByteString'&}
-> `()' alwaysSucceeds*-#}
{#fun EVP_DigestFinal_ex as evpDigestFinalEx
{withForeignPtr* `ForeignPtr EVPMDCtx', id `Ptr CUChar', id `Ptr CUInt'}
-> `()' alwaysSucceeds*-#}
evpMaxMDSize :: Int
evpMaxMDSize = {#const EVP_MAX_MD_SIZE#}
{#fun pure EVP_MD_type as evpMDType {`Ptr EVPMD'} -> `Int'#}
instance Storable EVPMDCtx where
sizeOf _ = {#sizeof EVP_MD_CTX#}
alignment _ = {#alignof EVP_MD_CTX#}
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