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{-# LANGUAGE DeriveGeneric #-}
module ZeroBin (
Expiration(..),
pasteEc,
share
) where
import Data.ByteString (ByteString)
import Data.ByteString.Base64 (encode)
import Data.Maybe (fromJust)
import GHC.Generics (Generic)
import ZeroBin.SJCL (encrypt, Content)
import ZeroBin.Utils (makePassword)
import qualified Data.Aeson as JSON
import qualified Data.ByteString.Char8 as C
import qualified Data.ByteString.Lazy as L
import qualified Network.HTTP.Conduit as HTTP
pasteEc :: String
pasteEc = "https://paste.ec"
data Response = Response {
status :: String
, message :: Maybe String
, paste :: Maybe String
} deriving (Generic, Show)
instance JSON.FromJSON Response
data Expiration
= Once
| Day
| Week
| Month
| Never
instance Show Expiration where
show Once = "burn_after_reading"
show Day = "1_day"
show Week = "1_week"
show Month = "1_month"
show Never = "never"
post :: Expiration -> Content -> IO Response
post ex ct = do
req' <- HTTP.parseUrl $ pasteEc ++ "/paste/create"
let req = HTTP.urlEncodedBody
[ (C.pack "expiration" , C.pack $ show ex)
, (C.pack "content" , L.toStrict $ JSON.encode ct)
] (req' { HTTP.secure = True })
manager <- HTTP.newManager HTTP.tlsManagerSettings
response <- HTTP.httpLbs req manager
return . fromJust . JSON.decode $ HTTP.responseBody response
share :: Expiration -> ByteString -> IO (Either String String)
share ex txt = do
pwd <- makePassword 33
c <- encrypt pwd (encode txt)
resp <- post ex c
case status resp of
"ok" -> return . Right $
pasteEc ++ "/paste/" ++ (fromJust . paste) resp ++ "#" ++ pwd
_ -> return . Left $
(fromJust . message) resp
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