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{-# OPTIONS_GHC -fno-warn-orphans #-}
{-# LANGUAGE OverloadedStrings #-}
{- Copyright 2016 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module Serialization where
import Types
import Raaz.Core.Encode
import qualified Data.ByteString as B
import qualified Data.ByteString.UTF8 as BU8
import qualified Data.Text as T
import Data.Word
-- | A SecretKeySource is serialized in the form "keytype value".
-- For example "gpg C910D9222512E3C7", or "file path".
instance Encodable SecretKeySource where
toByteString (GpgKey (KeyId b)) =
"gpg" <> B.singleton sepChar <> BU8.fromString (T.unpack b)
toByteString (KeyFile f) =
"file" <> B.singleton sepChar <> BU8.fromString f
fromByteString b = case B.break (== sepChar) b of
(t, rest)
| B.null rest -> Nothing
| otherwise ->
let i = B.drop 1 rest
in case t of
"gpg" -> Just $ GpgKey (KeyId (T.pack (BU8.toString i)))
"file" -> Just $ KeyFile (BU8.toString i)
_ -> Nothing
instance Encodable Name where
toByteString (Name n) = n
fromByteString = Just . Name
instance Encodable StorableObjectIdent where
toByteString (StorableObjectIdent i) = i
fromByteString = Just . StorableObjectIdent
instance Encodable StorableObject where
toByteString (StorableObject b) = b
fromByteString = Just . StorableObject
-- | A share is serialized without its share number. This prevents
-- an attacker from partitioning their shares by share number.
instance Encodable Share where
toByteString (Share _n o) = toByteString o
fromByteString _ = Nothing
sepChar :: Word8
sepChar = 32
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