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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 Data.Monoid
import Data.Word
-- | A KeyId is serialized in the form "keytype value".
-- For example "gpg C910D9222512E3C7"
instance Encodable KeyId where
toByteString (KeyId (KeyType t) i) =
t <> B.singleton sepChar <> i
fromByteString b = case B.break (== sepChar) b of
(t, n)
| B.null n -> Nothing
| otherwise -> Just $
KeyId (KeyType t) (B.drop 1 n)
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 shard is serialized without its shard number. This prevents
-- an attacker from partitioning their shards by shard number.
instance Encodable Shard where
toByteString (Shard _n o) = toByteString o
fromByteString _ = Nothing
sepChar :: Word8
sepChar = 32
|
