urbit/pkg/hs/urbit-king/lib/Urbit/Arvo/Event.hs
2020-12-10 17:56:56 -08:00

374 lines
10 KiB
Haskell

{-# LANGUAGE StrictData #-}
-- This is required due to the use of 'Void' in a constructor slot in
-- combination with 'deriveNoun' which generates an unreachable pattern.
{-# OPTIONS_GHC -Wno-overlapping-patterns #-}
{-|
Event Types and Noun Conversion
-}
module Urbit.Arvo.Event where
import Urbit.Prelude hiding (Term)
import Control.Monad.Fail (fail)
import Urbit.Arvo.Common (KingId(..), ServId(..))
import Urbit.Arvo.Common (Desk, Mime)
import Urbit.Arvo.Common (Header(..), HttpEvent)
import Urbit.Arvo.Common (AmesDest, Ipv4, Ipv6, Port, Turf)
import Urbit.Arvo.Common (ReOrg(..), reorgThroughNoun)
import qualified Crypto.Sign.Ed25519 as Ed
import qualified Data.ByteString as BS
import qualified Data.ByteString.Char8 as C
import qualified Network.HTTP.Types.Method as H
-- Misc Types ------------------------------------------------------------------
type Rift = Atom -- Continuity number
type Life = Word -- Number of Azimoth key revs.
type Bloq = Atom -- TODO
type Oath = Atom -- Signature
-- Parsed URLs -----------------------------------------------------------------
type Host = Each Turf Ipv4
type Hart = (Bool, Maybe Atom, Host)
type Pork = (Maybe Knot, [Cord])
type Quay = [(Cord, Cord)]
data PUrl = PUrl Hart Pork Quay
deriving (Eq, Ord, Show)
deriveNoun ''PUrl
-- Dawn Records ----------------------------------------------------------------
padByteString :: BS.ByteString -> Int -> BS.ByteString
padByteString bs length | remaining > 0 = bs <> (BS.replicate remaining 0)
| otherwise = bs
where remaining = (length - (BS.length bs))
-- A Pass is the Atom concatenation of 'b', the public encryption key, and the
-- public authentication key. (see +pass-from-eth.)
data Pass = Pass { passSign :: Ed.PublicKey, passCrypt :: Ed.PublicKey }
deriving (Eq, Ord, Show)
passToBS :: Pass -> BS.ByteString
passToBS Pass{..} = C.singleton 'b' <>
(Ed.unPublicKey passSign) <>
(Ed.unPublicKey passCrypt)
instance ToNoun Pass where
toNoun = Atom . bytesAtom . passToBS
instance FromNoun Pass where
parseNoun n = named "Pass" $ do
MkBytes unpadded <- parseNoun n
let bs = padByteString unpadded 65
when ((C.head bs) /= 'b') $ do
fail "Expecting 'b' prefix in public key structure"
let removedPrefix = C.tail bs
let passSign = Ed.PublicKey (take 32 removedPrefix)
let passCrypt = Ed.PublicKey (drop 32 removedPrefix)
unless ((length $ Ed.unPublicKey passSign) == 32) $
error "Sign pubkey not 32 bytes"
unless ((length $ Ed.unPublicKey passCrypt) == 32) $
error "Crypt pubkey not 32 bytes"
pure $ Pass{..}
-- A Ring isn't the secret keys: it's the ByteString input which generates both
-- the public key and the secret key. A Ring is the concatenation of 'B', the
-- encryption key derivation seed, and the authentication key derivation
-- seed. These aren't actually private keys, but public/private keypairs which
-- can be derived from these seeds.
data Ring = Ring { ringSign :: BS.ByteString, ringCrypt :: BS.ByteString }
deriving (Eq)
instance ToNoun Ring where
toNoun Ring{..} =
Atom $ bytesAtom (C.singleton 'B' <> ringSign <> ringCrypt)
instance FromNoun Ring where
parseNoun n = named "Ring" $ do
MkBytes unpadded <- parseNoun n
let bs = padByteString unpadded 65
when ((C.head bs) /= 'B') $ do
fail "Expecting 'B' prefix in public key structure"
let removedPrefix = C.tail bs
let ringSign = (take 32 removedPrefix)
let ringCrypt = (drop 32 removedPrefix)
unless ((length ringSign) == 32) $
error "Sign seed not 32 bytes"
unless ((length ringCrypt) == 32) $
error "Crypt seed not 32 bytes"
pure $ Ring ringSign ringCrypt
instance Show Ring where
show r = "(Ring <<seed>> <<seed>>)"
data Seed = Seed
{ sShip :: Ship
, sLife :: Life
, sRing :: Ring
, sOath :: (Maybe Oath)
}
deriving (Eq, Show)
type Public = (Life, HoonMap Life Pass)
data Dnses = Dnses { dPri::Cord, dSec::Cord, dTer::Cord }
deriving (Eq, Ord, Show)
type EthAddr = Atom --Bytes -- 20 bytes
type ContNum = Word
data EthPoint = EthPoint
{ epOwn :: (EthAddr, EthAddr, EthAddr, EthAddr)
, epNet :: Maybe (Life, Pass, ContNum, (Bool, Ship), Maybe Ship)
, epKid :: Maybe (EthAddr, HoonSet Ship)
}
deriving (Eq, Show)
data Dawn = MkDawn
{ dSeed :: Seed
, dSponsor :: [(Ship, EthPoint)]
, dCzar :: HoonMap Ship (Rift, Life, Pass)
, dTurf :: [Turf]
, dBloq :: Bloq
, dNode :: (Maybe PUrl)
}
deriving (Eq, Show)
deriveNoun ''Dnses
deriveNoun ''EthPoint
deriveNoun ''Seed
deriveNoun ''Dawn
-- HTTP ------------------------------------------------------------------------
type ServerId = Atom
data Address
= AIpv4 Ipv4
| AIpv6 Ipv6
| AAmes Ship
deriving (Eq, Ord, Show)
data HttpRequest = HttpRequest
{ reqMeth :: H.StdMethod
, reqUrl :: Cord
, reqHead :: [Header]
, reqBody :: Maybe File
}
deriving (Eq, Ord, Show)
data HttpServerReq = HttpServerReq
{ hsrSecure :: Bool
, hsrAddress :: Address
, hsrRequest :: HttpRequest
}
deriving (Eq, Ord, Show)
data HttpClientEv
= HttpClientEvReceive (KingId, ()) ServerId HttpEvent
| HttpClientEvBorn (KingId, ()) ()
| HttpClientEvCrud Path Noun
deriving (Eq, Ord, Show)
data HttpServerEv
= HttpServerEvRequest (ServId, UD, UD, ()) HttpServerReq
| HttpServerEvCancelRequest (ServId, UD, UD, ()) ()
| HttpServerEvRequestLocal (ServId, UD, UD, ()) HttpServerReq
| HttpServerEvLive (ServId, ()) Port (Maybe Port)
| HttpServerEvBorn (KingId, ()) ()
| HttpServerEvCrud Path Noun
deriving (Eq, Ord, Show)
deriveNoun ''Address
deriveNoun ''HttpClientEv
deriveNoun ''HttpRequest
deriveNoun ''HttpServerEv
deriveNoun ''HttpServerReq
-- Ames ------------------------------------------------------------------------
data AmesEv
= AmesEvHear () AmesDest Bytes
| AmesEvHole () AmesDest Bytes
| AmesEvCrud Path Noun
deriving (Eq, Ord, Show)
deriveNoun ''AmesEv
-- Arvo Events -----------------------------------------------------------------
newtype Entropy = Entropy { entropyBits :: Word512 }
deriving newtype (Eq, Ord, FromNoun, ToNoun)
instance Show Entropy where
show = const "\"ENTROPY (secret)\""
data ArvoEv
= ArvoEvWhom () Ship
| ArvoEvWack () Entropy
| ArvoEvCrud Path Noun
deriving (Eq, Ord, Show)
deriveNoun ''ArvoEv
-- Boat Events -----------------------------------------------------------------
data BoatEv
= BoatEvBoat () ()
| BoatEvCrud Path Noun
deriving (Eq, Ord, Show)
deriveNoun ''BoatEv
-- Timer Events ----------------------------------------------------------------
data BehnEv
= BehnEvWake () ()
| BehnEvBorn (KingId, ()) ()
| BehnEvCrud Path Noun
deriving (Eq, Ord, Show)
deriveNoun ''BehnEv
-- Newt Events -----------------------------------------------------------------
data NewtEv
= NewtEvBorn (KingId, ()) ()
| NewtEvCrud Path Noun
deriving (Eq, Ord, Show)
deriveNoun ''NewtEv
-- FileSystem Events -----------------------------------------------------------
data SyncEv
= SyncEvInto (Nullable (KingId, ())) Desk Bool [(Path, Maybe Mime)]
| SyncEvCrud Path Noun
deriving (Eq, Ord, Show)
deriveNoun ''SyncEv
-- Terminal Events -------------------------------------------------------------
data LegacyBootEvent
= Fake Ship
| Dawn Dawn
deriving (Eq, Show)
data ArrowKey = D | L | R | U
deriving (Eq, Ord, Show)
data Belt
= Aro ArrowKey
| Bac ()
| Ctl Cord
| Del ()
| Met Cord
| Ret ()
| Txt Tour
deriving (Eq, Ord, Show)
data TermEv
= TermEvBelt (UD, ()) Belt
| TermEvBlew (UD, ()) Word Word
| TermEvBoot (UD, ()) Bool LegacyBootEvent
| TermEvHail (UD, ()) ()
| TermEvCrud Path Noun
deriving (Eq, Show)
deriveNoun ''LegacyBootEvent
deriveNoun ''ArrowKey
deriveNoun ''Belt
deriveNoun ''TermEv
-- Events for Device Drivers ---------------------------------------------------
data BlipEv
= BlipEvAmes AmesEv
| BlipEvArvo ArvoEv
| BlipEvBehn BehnEv
| BlipEvBoat BoatEv
| BlipEvHttpClient HttpClientEv
| BlipEvHttpServer HttpServerEv
| BlipEvNewt NewtEv
| BlipEvSync SyncEv
| BlipEvTerm TermEv
deriving (Eq, Show)
deriveNoun ''BlipEv
-- The Main Event Type ---------------------------------------------------------
data Ev
= EvBlip BlipEv
deriving (Eq, Show)
instance ToNoun Ev where
toNoun = toNoun . \case
EvBlip v@BlipEvAmes{} -> reorgThroughNoun ("ames", v)
EvBlip v@BlipEvArvo{} -> reorgThroughNoun ("", v)
EvBlip v@BlipEvBehn{} -> reorgThroughNoun ("behn", v)
EvBlip v@BlipEvBoat{} -> reorgThroughNoun ("clay", v)
EvBlip v@BlipEvHttpClient{} -> reorgThroughNoun ("iris", v)
EvBlip v@BlipEvHttpServer{} -> reorgThroughNoun ("eyre", v)
EvBlip v@BlipEvNewt{} -> reorgThroughNoun ("ames", v)
EvBlip v@BlipEvSync{} -> reorgThroughNoun ("clay", v)
EvBlip v@BlipEvTerm{} -> reorgThroughNoun ("dill", v)
-- XX We really should check the first path element, but since this is used only
-- in the event browser, which otherwise is broken, I don't care right now.
instance FromNoun Ev where
parseNoun = parseNoun >=> \case
ReOrg _ s t p v -> fmap EvBlip $ parseNoun $ toNoun (s,t,p,v)
-- Short Event Names -----------------------------------------------------------
{-
In the case of the user hitting enter, the cause is technically a
terminal event, but we don't display any name because the cause is
really the user.
-}
getSpinnerNameForEvent :: Ev -> Maybe Text
getSpinnerNameForEvent = \case
EvBlip b -> case b of
BlipEvAmes _ -> Just "ames"
BlipEvArvo _ -> Just "arvo"
BlipEvBehn _ -> Just "behn"
BlipEvBoat _ -> Just "boat"
BlipEvHttpClient _ -> Just "iris"
BlipEvHttpServer _ -> Just "eyre"
BlipEvNewt _ -> Just "newt"
BlipEvSync _ -> Just "clay"
BlipEvTerm t | isRet t -> Nothing
BlipEvTerm t -> Just "term"
where
isRet (TermEvBelt _ (Ret ())) = True
isRet _ = False
summarizeEvent :: Ev -> Text
summarizeEvent ev =
fromNoun (toNoun ev) & \case
Nothing -> "//invalid %event"
Just (pax :: [Cord], tag :: Cord, val :: Noun) ->
"/" <> intercalate "/" (unCord <$> pax) <> " %" <> unCord tag