{-# LANGUAGE GeneralizedNewtypeDeriving #-}
{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}

module Network.TLS.Handshake.Common13 (
    makeFinished,
    checkFinished,
    makeServerKeyShare,
    makeClientKeyShare,
    fromServerKeyShare,
    makeCertVerify,
    checkCertVerify,
    makePSKBinder,
    replacePSKBinder,
    sendChangeCipherSpec13,
    handshakeDone13,
    makeCertRequest,
    createTLS13TicketInfo,
    ageToObfuscatedAge,
    isAgeValid,
    getAge,
    checkFreshness,
    getCurrentTimeFromBase,
    getSessionData13,
    isHashSignatureValid13,
    safeNonNegative32,
    RecvHandshake13M,
    runRecvHandshake13,
    recvHandshake13,
    recvHandshake13hash,
    CipherChoice (..),
    makeCipherChoice,
    initEarlySecret,
    calculateEarlySecret,
    calculateHandshakeSecret,
    calculateApplicationSecret,
    calculateResumptionSecret,
    derivePSK,
    checkKeyShareKeyLength,
    setRTT,
) where

import qualified Data.ByteArray as BA
import qualified Data.ByteString as B
import Data.UnixTime
import Foreign.C.Types (CTime (..))
import Network.TLS.Cipher
import Network.TLS.Context.Internal
import Network.TLS.Crypto
import qualified Network.TLS.Crypto.IES as IES

import Network.TLS.Extension
import Network.TLS.Handshake.Certificate (extractCAname)
import Network.TLS.Handshake.Common (unexpected)
import Network.TLS.Handshake.Key
import Network.TLS.Handshake.Process (processHandshake13)
import Network.TLS.Handshake.Signature
import Network.TLS.Handshake.State
import Network.TLS.Handshake.State13
import Network.TLS.IO
import Network.TLS.Imports
import Network.TLS.KeySchedule
import Network.TLS.MAC
import Network.TLS.Parameters
import Network.TLS.State
import Network.TLS.Struct
import Network.TLS.Struct13
import Network.TLS.Types
import Network.TLS.Wire

import Control.Concurrent.MVar
import Control.Monad.State.Strict

----------------------------------------------------------------

makeFinished :: MonadIO m => Context -> Hash -> ByteString -> m Handshake13
makeFinished :: forall (m :: * -> *).
MonadIO m =>
Context -> Hash -> ByteString -> m Handshake13
makeFinished Context
ctx Hash
usedHash ByteString
baseKey = do
    ByteString
verifyData <- Hash -> ByteString -> ByteString -> ByteString
makeVerifyData Hash
usedHash ByteString
baseKey (ByteString -> ByteString) -> m ByteString -> m ByteString
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> Context -> m ByteString
forall (m :: * -> *). MonadIO m => Context -> m ByteString
transcriptHash Context
ctx
    IO () -> m ()
forall a. IO a -> m a
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO () -> m ()) -> IO () -> m ()
forall a b. (a -> b) -> a -> b
$ Context -> TLSSt () -> IO ()
forall a. Context -> TLSSt a -> IO a
usingState_ Context
ctx (TLSSt () -> IO ()) -> TLSSt () -> IO ()
forall a b. (a -> b) -> a -> b
$ ByteString -> TLSSt ()
setVerifyDataForSend ByteString
verifyData
    Handshake13 -> m Handshake13
forall a. a -> m a
forall (f :: * -> *) a. Applicative f => a -> f a
pure (Handshake13 -> m Handshake13) -> Handshake13 -> m Handshake13
forall a b. (a -> b) -> a -> b
$ ByteString -> Handshake13
Finished13 ByteString
verifyData

checkFinished
    :: MonadIO m => Context -> Hash -> ByteString -> ByteString -> ByteString -> m ()
checkFinished :: forall (m :: * -> *).
MonadIO m =>
Context -> Hash -> ByteString -> ByteString -> ByteString -> m ()
checkFinished Context
ctx Hash
usedHash ByteString
baseKey ByteString
hashValue ByteString
verifyData = do
    let verifyData' :: ByteString
verifyData' = Hash -> ByteString -> ByteString -> ByteString
makeVerifyData Hash
usedHash ByteString
baseKey ByteString
hashValue
    Bool -> m () -> m ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
when (ByteString -> Int
B.length ByteString
verifyData Int -> Int -> Bool
forall a. Eq a => a -> a -> Bool
/= ByteString -> Int
B.length ByteString
verifyData') (m () -> m ()) -> m () -> m ()
forall a b. (a -> b) -> a -> b
$
        TLSError -> m ()
forall (m :: * -> *) a. MonadIO m => TLSError -> m a
throwCore (TLSError -> m ()) -> TLSError -> m ()
forall a b. (a -> b) -> a -> b
$
            String -> AlertDescription -> TLSError
Error_Protocol String
"broken Finished" AlertDescription
DecodeError
    Bool -> m () -> m ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
unless (ByteString
verifyData' ByteString -> ByteString -> Bool
forall a. Eq a => a -> a -> Bool
== ByteString
verifyData) (m () -> m ()) -> m () -> m ()
forall a b. (a -> b) -> a -> b
$ String -> m ()
forall (m :: * -> *) a. MonadIO m => String -> m a
decryptError String
"cannot verify finished"
    IO () -> m ()
forall a. IO a -> m a
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO () -> m ()) -> IO () -> m ()
forall a b. (a -> b) -> a -> b
$ Context -> TLSSt () -> IO ()
forall a. Context -> TLSSt a -> IO a
usingState_ Context
ctx (TLSSt () -> IO ()) -> TLSSt () -> IO ()
forall a b. (a -> b) -> a -> b
$ ByteString -> TLSSt ()
setVerifyDataForRecv ByteString
verifyData

makeVerifyData :: Hash -> ByteString -> ByteString -> ByteString
makeVerifyData :: Hash -> ByteString -> ByteString -> ByteString
makeVerifyData Hash
usedHash ByteString
baseKey = Hash -> ByteString -> ByteString -> ByteString
hmac Hash
usedHash ByteString
finishedKey
  where
    hashSize :: Int
hashSize = Hash -> Int
hashDigestSize Hash
usedHash
    finishedKey :: ByteString
finishedKey = Hash -> ByteString -> ByteString -> ByteString -> Int -> ByteString
hkdfExpandLabel Hash
usedHash ByteString
baseKey ByteString
"finished" ByteString
"" Int
hashSize

----------------------------------------------------------------

makeServerKeyShare :: Context -> KeyShareEntry -> IO (ByteString, KeyShareEntry)
makeServerKeyShare :: Context -> KeyShareEntry -> IO (ByteString, KeyShareEntry)
makeServerKeyShare Context
ctx (KeyShareEntry Group
grp ByteString
wcpub) = case Either CryptoError GroupPublic
ecpub of
    Left CryptoError
e -> TLSError -> IO (ByteString, KeyShareEntry)
forall (m :: * -> *) a. MonadIO m => TLSError -> m a
throwCore (TLSError -> IO (ByteString, KeyShareEntry))
-> TLSError -> IO (ByteString, KeyShareEntry)
forall a b. (a -> b) -> a -> b
$ String -> AlertDescription -> TLSError
Error_Protocol (CryptoError -> String
forall a. Show a => a -> String
show CryptoError
e) AlertDescription
IllegalParameter
    Right GroupPublic
cpub -> do
        Maybe (GroupPublic, GroupKey)
ecdhePair <- Context -> GroupPublic -> IO (Maybe (GroupPublic, GroupKey))
generateECDHEShared Context
ctx GroupPublic
cpub
        case Maybe (GroupPublic, GroupKey)
ecdhePair of
            Maybe (GroupPublic, GroupKey)
Nothing -> TLSError -> IO (ByteString, KeyShareEntry)
forall (m :: * -> *) a. MonadIO m => TLSError -> m a
throwCore (TLSError -> IO (ByteString, KeyShareEntry))
-> TLSError -> IO (ByteString, KeyShareEntry)
forall a b. (a -> b) -> a -> b
$ String -> AlertDescription -> TLSError
Error_Protocol String
msgInvalidPublic AlertDescription
IllegalParameter
            Just (GroupPublic
spub, GroupKey
share) ->
                let wspub :: ByteString
wspub = GroupPublic -> ByteString
IES.encodeGroupPublic GroupPublic
spub
                    serverKeyShare :: KeyShareEntry
serverKeyShare = Group -> ByteString -> KeyShareEntry
KeyShareEntry Group
grp ByteString
wspub
                 in (ByteString, KeyShareEntry) -> IO (ByteString, KeyShareEntry)
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (GroupKey -> ByteString
forall bin bout.
(ByteArrayAccess bin, ByteArray bout) =>
bin -> bout
BA.convert GroupKey
share, KeyShareEntry
serverKeyShare)
  where
    ecpub :: Either CryptoError GroupPublic
ecpub = Group -> ByteString -> Either CryptoError GroupPublic
IES.decodeGroupPublic Group
grp ByteString
wcpub
    msgInvalidPublic :: String
msgInvalidPublic = String
"invalid client " String -> String -> String
forall a. [a] -> [a] -> [a]
++ Group -> String
forall a. Show a => a -> String
show Group
grp String -> String -> String
forall a. [a] -> [a] -> [a]
++ String
" public key"

makeClientKeyShare :: Context -> Group -> IO (IES.GroupPrivate, KeyShareEntry)
makeClientKeyShare :: Context -> Group -> IO (GroupPrivate, KeyShareEntry)
makeClientKeyShare Context
ctx Group
grp = do
    (GroupPrivate
cpri, GroupPublic
cpub) <- Context -> Group -> IO (GroupPrivate, GroupPublic)
generateECDHE Context
ctx Group
grp
    let wcpub :: ByteString
wcpub = GroupPublic -> ByteString
IES.encodeGroupPublic GroupPublic
cpub
        clientKeyShare :: KeyShareEntry
clientKeyShare = Group -> ByteString -> KeyShareEntry
KeyShareEntry Group
grp ByteString
wcpub
    (GroupPrivate, KeyShareEntry) -> IO (GroupPrivate, KeyShareEntry)
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (GroupPrivate
cpri, KeyShareEntry
clientKeyShare)

fromServerKeyShare :: KeyShareEntry -> IES.GroupPrivate -> IO ByteString
fromServerKeyShare :: KeyShareEntry -> GroupPrivate -> IO ByteString
fromServerKeyShare (KeyShareEntry Group
grp ByteString
wspub) GroupPrivate
cpri = case Either CryptoError GroupPublic
espub of
    Left CryptoError
e -> TLSError -> IO ByteString
forall (m :: * -> *) a. MonadIO m => TLSError -> m a
throwCore (TLSError -> IO ByteString) -> TLSError -> IO ByteString
forall a b. (a -> b) -> a -> b
$ String -> AlertDescription -> TLSError
Error_Protocol (CryptoError -> String
forall a. Show a => a -> String
show CryptoError
e) AlertDescription
IllegalParameter
    Right GroupPublic
spub -> case GroupPublic -> GroupPrivate -> Maybe GroupKey
IES.groupGetShared GroupPublic
spub GroupPrivate
cpri of
        Just GroupKey
shared -> ByteString -> IO ByteString
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (ByteString -> IO ByteString) -> ByteString -> IO ByteString
forall a b. (a -> b) -> a -> b
$ GroupKey -> ByteString
forall bin bout.
(ByteArrayAccess bin, ByteArray bout) =>
bin -> bout
BA.convert GroupKey
shared
        Maybe GroupKey
Nothing ->
            TLSError -> IO ByteString
forall (m :: * -> *) a. MonadIO m => TLSError -> m a
throwCore (TLSError -> IO ByteString) -> TLSError -> IO ByteString
forall a b. (a -> b) -> a -> b
$
                String -> AlertDescription -> TLSError
Error_Protocol String
"cannot generate a shared secret on (EC)DH" AlertDescription
IllegalParameter
  where
    espub :: Either CryptoError GroupPublic
espub = Group -> ByteString -> Either CryptoError GroupPublic
IES.decodeGroupPublic Group
grp ByteString
wspub

----------------------------------------------------------------

serverContextString :: ByteString
serverContextString :: ByteString
serverContextString = ByteString
"TLS 1.3, server CertificateVerify"

clientContextString :: ByteString
clientContextString :: ByteString
clientContextString = ByteString
"TLS 1.3, client CertificateVerify"

makeCertVerify
    :: MonadIO m
    => Context
    -> PubKey
    -> HashAndSignatureAlgorithm
    -> ByteString
    -> m Handshake13
makeCertVerify :: forall (m :: * -> *).
MonadIO m =>
Context
-> PubKey
-> HashAndSignatureAlgorithm
-> ByteString
-> m Handshake13
makeCertVerify Context
ctx PubKey
pub HashAndSignatureAlgorithm
hs ByteString
hashValue = do
    Role
role <- IO Role -> m Role
forall a. IO a -> m a
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO Role -> m Role) -> IO Role -> m Role
forall a b. (a -> b) -> a -> b
$ Context -> TLSSt Role -> IO Role
forall a. Context -> TLSSt a -> IO a
usingState_ Context
ctx TLSSt Role
getRole
    let ctxStr :: ByteString
ctxStr
            | Role
role Role -> Role -> Bool
forall a. Eq a => a -> a -> Bool
== Role
ClientRole = ByteString
clientContextString
            | Bool
otherwise = ByteString
serverContextString
        target :: ByteString
target = ByteString -> ByteString -> ByteString
makeTarget ByteString
ctxStr ByteString
hashValue
    HashAndSignatureAlgorithm -> ByteString -> Handshake13
CertVerify13 HashAndSignatureAlgorithm
hs (ByteString -> Handshake13) -> m ByteString -> m Handshake13
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> Context
-> PubKey
-> HashAndSignatureAlgorithm
-> ByteString
-> m ByteString
forall (m :: * -> *).
MonadIO m =>
Context
-> PubKey
-> HashAndSignatureAlgorithm
-> ByteString
-> m ByteString
sign Context
ctx PubKey
pub HashAndSignatureAlgorithm
hs ByteString
target

checkCertVerify
    :: MonadIO m
    => Context
    -> PubKey
    -> HashAndSignatureAlgorithm
    -> Signature
    -> ByteString
    -> m Bool
checkCertVerify :: forall (m :: * -> *).
MonadIO m =>
Context
-> PubKey
-> HashAndSignatureAlgorithm
-> ByteString
-> ByteString
-> m Bool
checkCertVerify Context
ctx PubKey
pub HashAndSignatureAlgorithm
hs ByteString
signature ByteString
hashValue
    | PubKey
pub PubKey -> HashAndSignatureAlgorithm -> Bool
`signatureCompatible13` HashAndSignatureAlgorithm
hs = IO Bool -> m Bool
forall a. IO a -> m a
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO Bool -> m Bool) -> IO Bool -> m Bool
forall a b. (a -> b) -> a -> b
$ do
        Role
role <- Context -> TLSSt Role -> IO Role
forall a. Context -> TLSSt a -> IO a
usingState_ Context
ctx TLSSt Role
getRole
        let ctxStr :: ByteString
ctxStr
                | Role
role Role -> Role -> Bool
forall a. Eq a => a -> a -> Bool
== Role
ClientRole = ByteString
serverContextString -- opposite context
                | Bool
otherwise = ByteString
clientContextString
            target :: ByteString
target = ByteString -> ByteString -> ByteString
makeTarget ByteString
ctxStr ByteString
hashValue
            sigParams :: SignatureParams
sigParams = PubKey -> HashAndSignatureAlgorithm -> SignatureParams
signatureParams PubKey
pub HashAndSignatureAlgorithm
hs
        HashAndSignatureAlgorithm -> IO ()
checkHashSignatureValid13 HashAndSignatureAlgorithm
hs
        Context -> HashAndSignatureAlgorithm -> IO ()
checkSupportedHashSignature Context
ctx HashAndSignatureAlgorithm
hs
        Context -> SignatureParams -> ByteString -> ByteString -> IO Bool
verifyPublic Context
ctx SignatureParams
sigParams ByteString
target ByteString
signature
    | Bool
otherwise = Bool -> m Bool
forall a. a -> m a
forall (m :: * -> *) a. Monad m => a -> m a
return Bool
False

makeTarget :: ByteString -> ByteString -> ByteString
makeTarget :: ByteString -> ByteString -> ByteString
makeTarget ByteString
contextString ByteString
hashValue = Put -> ByteString
runPut (Put -> ByteString) -> Put -> ByteString
forall a b. (a -> b) -> a -> b
$ do
    ByteString -> Put
putBytes (ByteString -> Put) -> ByteString -> Put
forall a b. (a -> b) -> a -> b
$ Int -> CompressionID -> ByteString
B.replicate Int
64 CompressionID
32
    ByteString -> Put
putBytes ByteString
contextString
    Putter CompressionID
putWord8 CompressionID
0
    ByteString -> Put
putBytes ByteString
hashValue

sign
    :: MonadIO m
    => Context
    -> PubKey
    -> HashAndSignatureAlgorithm
    -> ByteString
    -> m Signature
sign :: forall (m :: * -> *).
MonadIO m =>
Context
-> PubKey
-> HashAndSignatureAlgorithm
-> ByteString
-> m ByteString
sign Context
ctx PubKey
pub HashAndSignatureAlgorithm
hs ByteString
target = IO ByteString -> m ByteString
forall a. IO a -> m a
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO ByteString -> m ByteString) -> IO ByteString -> m ByteString
forall a b. (a -> b) -> a -> b
$ do
    Role
role <- Context -> TLSSt Role -> IO Role
forall a. Context -> TLSSt a -> IO a
usingState_ Context
ctx TLSSt Role
getRole
    let sigParams :: SignatureParams
sigParams = PubKey -> HashAndSignatureAlgorithm -> SignatureParams
signatureParams PubKey
pub HashAndSignatureAlgorithm
hs
    Context -> Role -> SignatureParams -> ByteString -> IO ByteString
signPrivate Context
ctx Role
role SignatureParams
sigParams ByteString
target

----------------------------------------------------------------

makePSKBinder
    :: Context
    -> BaseSecret EarlySecret
    -> Hash
    -> Int
    -> Maybe ByteString
    -> IO ByteString
makePSKBinder :: Context
-> BaseSecret EarlySecret
-> Hash
-> Int
-> Maybe ByteString
-> IO ByteString
makePSKBinder Context
ctx (BaseSecret ByteString
sec) Hash
usedHash Int
truncLen Maybe ByteString
mch = do
    [ByteString]
rmsgs0 <- Context -> HandshakeM [ByteString] -> IO [ByteString]
forall (m :: * -> *) a. MonadIO m => Context -> HandshakeM a -> m a
usingHState Context
ctx HandshakeM [ByteString]
getHandshakeMessagesRev -- fixme
    let rmsgs :: [ByteString]
rmsgs = case Maybe ByteString
mch of
            Just ByteString
ch -> ByteString -> ByteString
trunc ByteString
ch ByteString -> [ByteString] -> [ByteString]
forall a. a -> [a] -> [a]
: [ByteString]
rmsgs0
            Maybe ByteString
Nothing -> ByteString -> ByteString
trunc ([ByteString] -> ByteString
forall a. HasCallStack => [a] -> a
head [ByteString]
rmsgs0) ByteString -> [ByteString] -> [ByteString]
forall a. a -> [a] -> [a]
: [ByteString] -> [ByteString]
forall a. HasCallStack => [a] -> [a]
tail [ByteString]
rmsgs0
        hChTruncated :: ByteString
hChTruncated = Hash -> ByteString -> ByteString
hash Hash
usedHash (ByteString -> ByteString) -> ByteString -> ByteString
forall a b. (a -> b) -> a -> b
$ [ByteString] -> ByteString
B.concat ([ByteString] -> ByteString) -> [ByteString] -> ByteString
forall a b. (a -> b) -> a -> b
$ [ByteString] -> [ByteString]
forall a. [a] -> [a]
reverse [ByteString]
rmsgs
        binderKey :: ByteString
binderKey = Hash -> ByteString -> ByteString -> ByteString -> ByteString
deriveSecret Hash
usedHash ByteString
sec ByteString
"res binder" (Hash -> ByteString -> ByteString
hash Hash
usedHash ByteString
"")
    ByteString -> IO ByteString
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (ByteString -> IO ByteString) -> ByteString -> IO ByteString
forall a b. (a -> b) -> a -> b
$ Hash -> ByteString -> ByteString -> ByteString
makeVerifyData Hash
usedHash ByteString
binderKey ByteString
hChTruncated
  where
    trunc :: ByteString -> ByteString
trunc ByteString
x = Int -> ByteString -> ByteString
B.take Int
takeLen ByteString
x
      where
        totalLen :: Int
totalLen = ByteString -> Int
B.length ByteString
x
        takeLen :: Int
takeLen = Int
totalLen Int -> Int -> Int
forall a. Num a => a -> a -> a
- Int
truncLen

replacePSKBinder :: ByteString -> [ByteString] -> ByteString
replacePSKBinder :: ByteString -> [ByteString] -> ByteString
replacePSKBinder ByteString
pskz [ByteString]
bds = ByteString
tLidentities ByteString -> ByteString -> ByteString
forall a. Semigroup a => a -> a -> a
<> ByteString
binders
  where
    tLidentities :: ByteString
tLidentities = Int -> ByteString -> ByteString
B.take (ByteString -> Int
B.length ByteString
pskz Int -> Int -> Int
forall a. Num a => a -> a -> a
- ByteString -> Int
B.length ByteString
binders) ByteString
pskz
    -- See instance Extension PreSharedKey
    binders :: ByteString
binders = Put -> ByteString
runPut (Put -> ByteString) -> Put -> ByteString
forall a b. (a -> b) -> a -> b
$ ByteString -> Put
putOpaque16 (ByteString -> Put) -> ByteString -> Put
forall a b. (a -> b) -> a -> b
$ Put -> ByteString
runPut ((ByteString -> Put) -> [ByteString] -> Put
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
(a -> m b) -> t a -> m ()
mapM_ ByteString -> Put
putBinder [ByteString]
bds)
    putBinder :: ByteString -> Put
putBinder = ByteString -> Put
putOpaque8

----------------------------------------------------------------

sendChangeCipherSpec13 :: Monoid b => Context -> PacketFlightM b ()
sendChangeCipherSpec13 :: forall b. Monoid b => Context -> PacketFlightM b ()
sendChangeCipherSpec13 Context
ctx = do
    Bool
sent <- Context -> HandshakeM Bool -> PacketFlightM b Bool
forall (m :: * -> *) a. MonadIO m => Context -> HandshakeM a -> m a
usingHState Context
ctx (HandshakeM Bool -> PacketFlightM b Bool)
-> HandshakeM Bool -> PacketFlightM b Bool
forall a b. (a -> b) -> a -> b
$ do
        Bool
b <- HandshakeM Bool
getCCS13Sent
        Bool -> HandshakeM () -> HandshakeM ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
unless Bool
b (HandshakeM () -> HandshakeM ()) -> HandshakeM () -> HandshakeM ()
forall a b. (a -> b) -> a -> b
$ Bool -> HandshakeM ()
setCCS13Sent Bool
True
        Bool -> HandshakeM Bool
forall a. a -> HandshakeM a
forall (m :: * -> *) a. Monad m => a -> m a
return Bool
b
    Bool -> PacketFlightM b () -> PacketFlightM b ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
unless Bool
sent (PacketFlightM b () -> PacketFlightM b ())
-> PacketFlightM b () -> PacketFlightM b ()
forall a b. (a -> b) -> a -> b
$ Context -> Packet13 -> PacketFlightM b ()
forall b. Monoid b => Context -> Packet13 -> PacketFlightM b ()
loadPacket13 Context
ctx Packet13
ChangeCipherSpec13

----------------------------------------------------------------

-- | TLS13 handshake wrap up & clean up.  Contrary to @handshakeDone@, this
-- does not handle session, which is managed separately for TLS 1.3.  This does
-- not reset byte counters because renegotiation is not allowed.  And a few more
-- state attributes are preserved, necessary for TLS13 handshake modes, session
-- tickets and post-handshake authentication.
handshakeDone13 :: Context -> IO ()
handshakeDone13 :: Context -> IO ()
handshakeDone13 Context
ctx = do
    -- forget most handshake data
    MVar (Maybe HandshakeState)
-> (Maybe HandshakeState -> IO (Maybe HandshakeState)) -> IO ()
forall a. MVar a -> (a -> IO a) -> IO ()
modifyMVar_ (Context -> MVar (Maybe HandshakeState)
ctxHandshakeState Context
ctx) ((Maybe HandshakeState -> IO (Maybe HandshakeState)) -> IO ())
-> (Maybe HandshakeState -> IO (Maybe HandshakeState)) -> IO ()
forall a b. (a -> b) -> a -> b
$ \case
        Maybe HandshakeState
Nothing -> Maybe HandshakeState -> IO (Maybe HandshakeState)
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Maybe HandshakeState
forall a. Maybe a
Nothing
        Just HandshakeState
hshake ->
            Maybe HandshakeState -> IO (Maybe HandshakeState)
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Maybe HandshakeState -> IO (Maybe HandshakeState))
-> Maybe HandshakeState -> IO (Maybe HandshakeState)
forall a b. (a -> b) -> a -> b
$
                HandshakeState -> Maybe HandshakeState
forall a. a -> Maybe a
Just
                    (Version -> ClientRandom -> HandshakeState
newEmptyHandshake (HandshakeState -> Version
hstClientVersion HandshakeState
hshake) (HandshakeState -> ClientRandom
hstClientRandom HandshakeState
hshake))
                        { hstServerRandom = hstServerRandom hshake
                        , hstMainSecret = hstMainSecret hshake
                        , hstSupportedGroup = hstSupportedGroup hshake
                        , hstHandshakeDigest = hstHandshakeDigest hshake
                        , hstTLS13HandshakeMode = hstTLS13HandshakeMode hshake
                        , hstTLS13RTT0Status = hstTLS13RTT0Status hshake
                        , hstTLS13ResumptionSecret = hstTLS13ResumptionSecret hshake
                        }
    -- forget handshake data stored in TLS state
    Context -> TLSSt () -> IO ()
forall a. Context -> TLSSt a -> IO a
usingState_ Context
ctx (TLSSt () -> IO ()) -> TLSSt () -> IO ()
forall a b. (a -> b) -> a -> b
$ do
        Maybe KeyShare -> TLSSt ()
setTLS13KeyShare Maybe KeyShare
forall a. Maybe a
Nothing
        Maybe PreSharedKey -> TLSSt ()
setTLS13PreSharedKey Maybe PreSharedKey
forall a. Maybe a
Nothing
    -- mark the secure connection up and running.
    Context -> Established -> IO ()
setEstablished Context
ctx Established
Established

----------------------------------------------------------------

makeCertRequest :: ServerParams -> Context -> CertReqContext -> Handshake13
makeCertRequest :: ServerParams -> Context -> ByteString -> Handshake13
makeCertRequest ServerParams
sparams Context
ctx ByteString
certReqCtx =
    let sigAlgs :: ByteString
sigAlgs =
            SignatureAlgorithms -> ByteString
forall a. Extension a => a -> ByteString
extensionEncode (SignatureAlgorithms -> ByteString)
-> SignatureAlgorithms -> ByteString
forall a b. (a -> b) -> a -> b
$
                [HashAndSignatureAlgorithm] -> SignatureAlgorithms
SignatureAlgorithms ([HashAndSignatureAlgorithm] -> SignatureAlgorithms)
-> [HashAndSignatureAlgorithm] -> SignatureAlgorithms
forall a b. (a -> b) -> a -> b
$
                    Supported -> [HashAndSignatureAlgorithm]
supportedHashSignatures (Supported -> [HashAndSignatureAlgorithm])
-> Supported -> [HashAndSignatureAlgorithm]
forall a b. (a -> b) -> a -> b
$
                        Context -> Supported
ctxSupported Context
ctx
        caDns :: [DistinguishedName]
caDns = (SignedCertificate -> DistinguishedName)
-> [SignedCertificate] -> [DistinguishedName]
forall a b. (a -> b) -> [a] -> [b]
map SignedCertificate -> DistinguishedName
extractCAname ([SignedCertificate] -> [DistinguishedName])
-> [SignedCertificate] -> [DistinguishedName]
forall a b. (a -> b) -> a -> b
$ ServerParams -> [SignedCertificate]
serverCACertificates ServerParams
sparams
        caDnsEncoded :: ByteString
caDnsEncoded = CertificateAuthorities -> ByteString
forall a. Extension a => a -> ByteString
extensionEncode (CertificateAuthorities -> ByteString)
-> CertificateAuthorities -> ByteString
forall a b. (a -> b) -> a -> b
$ [DistinguishedName] -> CertificateAuthorities
CertificateAuthorities [DistinguishedName]
caDns
        caExtension :: [ExtensionRaw]
caExtension
            | [DistinguishedName] -> Bool
forall a. [a] -> Bool
forall (t :: * -> *) a. Foldable t => t a -> Bool
null [DistinguishedName]
caDns = []
            | Bool
otherwise = [ExtensionID -> ByteString -> ExtensionRaw
ExtensionRaw ExtensionID
EID_CertificateAuthorities ByteString
caDnsEncoded]
        crexts :: [ExtensionRaw]
crexts = ExtensionID -> ByteString -> ExtensionRaw
ExtensionRaw ExtensionID
EID_SignatureAlgorithms ByteString
sigAlgs ExtensionRaw -> [ExtensionRaw] -> [ExtensionRaw]
forall a. a -> [a] -> [a]
: [ExtensionRaw]
caExtension
     in ByteString -> [ExtensionRaw] -> Handshake13
CertRequest13 ByteString
certReqCtx [ExtensionRaw]
crexts

----------------------------------------------------------------

createTLS13TicketInfo
    :: Second -> Either Context Second -> Maybe Millisecond -> IO TLS13TicketInfo
createTLS13TicketInfo :: Second
-> Either Context Second -> Maybe Millisecond -> IO TLS13TicketInfo
createTLS13TicketInfo Second
life Either Context Second
ecw Maybe Millisecond
mrtt = do
    -- Left:  serverSendTime
    -- Right: clientReceiveTime
    Millisecond
bTime <- IO Millisecond
getCurrentTimeFromBase
    Second
add <- case Either Context Second
ecw of
        Left Context
ctx -> (Second -> CompressionID -> Second)
-> Second -> ByteString -> Second
forall a. (a -> CompressionID -> a) -> a -> ByteString -> a
B.foldl' Second -> CompressionID -> Second
forall {a} {a}. (Integral a, Num a) => a -> a -> a
(*+) Second
0 (ByteString -> Second) -> IO ByteString -> IO Second
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> Context -> Int -> IO ByteString
getStateRNG Context
ctx Int
4
        Right Second
ad -> Second -> IO Second
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Second
ad
    TLS13TicketInfo -> IO TLS13TicketInfo
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (TLS13TicketInfo -> IO TLS13TicketInfo)
-> TLS13TicketInfo -> IO TLS13TicketInfo
forall a b. (a -> b) -> a -> b
$
        TLS13TicketInfo
            { lifetime :: Second
lifetime = Second
life
            , ageAdd :: Second
ageAdd = Second
add
            , txrxTime :: Millisecond
txrxTime = Millisecond
bTime
            , estimatedRTT :: Maybe Millisecond
estimatedRTT = Maybe Millisecond
mrtt
            }
  where
    a
x *+ :: a -> a -> a
*+ a
y = a
x a -> a -> a
forall a. Num a => a -> a -> a
* a
256 a -> a -> a
forall a. Num a => a -> a -> a
+ a -> a
forall a b. (Integral a, Num b) => a -> b
fromIntegral a
y

ageToObfuscatedAge :: Second -> TLS13TicketInfo -> Second
ageToObfuscatedAge :: Second -> TLS13TicketInfo -> Second
ageToObfuscatedAge Second
age TLS13TicketInfo{Maybe Millisecond
Second
Millisecond
lifetime :: TLS13TicketInfo -> Second
ageAdd :: TLS13TicketInfo -> Second
txrxTime :: TLS13TicketInfo -> Millisecond
estimatedRTT :: TLS13TicketInfo -> Maybe Millisecond
lifetime :: Second
ageAdd :: Second
txrxTime :: Millisecond
estimatedRTT :: Maybe Millisecond
..} = Second
obfage
  where
    obfage :: Second
obfage = Second
age Second -> Second -> Second
forall a. Num a => a -> a -> a
+ Second
ageAdd

obfuscatedAgeToAge :: Second -> TLS13TicketInfo -> Second
obfuscatedAgeToAge :: Second -> TLS13TicketInfo -> Second
obfuscatedAgeToAge Second
obfage TLS13TicketInfo{Maybe Millisecond
Second
Millisecond
lifetime :: TLS13TicketInfo -> Second
ageAdd :: TLS13TicketInfo -> Second
txrxTime :: TLS13TicketInfo -> Millisecond
estimatedRTT :: TLS13TicketInfo -> Maybe Millisecond
lifetime :: Second
ageAdd :: Second
txrxTime :: Millisecond
estimatedRTT :: Maybe Millisecond
..} = Second
age
  where
    age :: Second
age = Second
obfage Second -> Second -> Second
forall a. Num a => a -> a -> a
- Second
ageAdd

isAgeValid :: Second -> TLS13TicketInfo -> Bool
isAgeValid :: Second -> TLS13TicketInfo -> Bool
isAgeValid Second
age TLS13TicketInfo{Maybe Millisecond
Second
Millisecond
lifetime :: TLS13TicketInfo -> Second
ageAdd :: TLS13TicketInfo -> Second
txrxTime :: TLS13TicketInfo -> Millisecond
estimatedRTT :: TLS13TicketInfo -> Maybe Millisecond
lifetime :: Second
ageAdd :: Second
txrxTime :: Millisecond
estimatedRTT :: Maybe Millisecond
..} = Second
age Second -> Second -> Bool
forall a. Ord a => a -> a -> Bool
<= Second
lifetime Second -> Second -> Second
forall a. Num a => a -> a -> a
* Second
1000

getAge :: TLS13TicketInfo -> IO Second
getAge :: TLS13TicketInfo -> IO Second
getAge TLS13TicketInfo{Maybe Millisecond
Second
Millisecond
lifetime :: TLS13TicketInfo -> Second
ageAdd :: TLS13TicketInfo -> Second
txrxTime :: TLS13TicketInfo -> Millisecond
estimatedRTT :: TLS13TicketInfo -> Maybe Millisecond
lifetime :: Second
ageAdd :: Second
txrxTime :: Millisecond
estimatedRTT :: Maybe Millisecond
..} = do
    let clientReceiveTime :: Millisecond
clientReceiveTime = Millisecond
txrxTime
    Millisecond
clientSendTime <- IO Millisecond
getCurrentTimeFromBase
    Second -> IO Second
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Second -> IO Second) -> Second -> IO Second
forall a b. (a -> b) -> a -> b
$ Millisecond -> Second
forall a b. (Integral a, Num b) => a -> b
fromIntegral (Millisecond
clientSendTime Millisecond -> Millisecond -> Millisecond
forall a. Num a => a -> a -> a
- Millisecond
clientReceiveTime) -- milliseconds

checkFreshness :: TLS13TicketInfo -> Second -> IO Bool
checkFreshness :: TLS13TicketInfo -> Second -> IO Bool
checkFreshness tinfo :: TLS13TicketInfo
tinfo@TLS13TicketInfo{Maybe Millisecond
Second
Millisecond
lifetime :: TLS13TicketInfo -> Second
ageAdd :: TLS13TicketInfo -> Second
txrxTime :: TLS13TicketInfo -> Millisecond
estimatedRTT :: TLS13TicketInfo -> Maybe Millisecond
lifetime :: Second
ageAdd :: Second
txrxTime :: Millisecond
estimatedRTT :: Maybe Millisecond
..} Second
obfAge = do
    Millisecond
serverReceiveTime <- IO Millisecond
getCurrentTimeFromBase
    let freshness :: Millisecond
freshness =
            if Millisecond
expectedArrivalTime Millisecond -> Millisecond -> Bool
forall a. Ord a => a -> a -> Bool
> Millisecond
serverReceiveTime
                then Millisecond
expectedArrivalTime Millisecond -> Millisecond -> Millisecond
forall a. Num a => a -> a -> a
- Millisecond
serverReceiveTime
                else Millisecond
serverReceiveTime Millisecond -> Millisecond -> Millisecond
forall a. Num a => a -> a -> a
- Millisecond
expectedArrivalTime
    -- Some implementations round age up to second.
    -- We take max of 2000 and rtt in the case where rtt is too small.
    let tolerance :: Millisecond
tolerance = Millisecond -> Millisecond -> Millisecond
forall a. Ord a => a -> a -> a
max Millisecond
2000 Millisecond
rtt
        isFresh :: Bool
isFresh = Millisecond
freshness Millisecond -> Millisecond -> Bool
forall a. Ord a => a -> a -> Bool
< Millisecond
tolerance
    Bool -> IO Bool
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Bool -> IO Bool) -> Bool -> IO Bool
forall a b. (a -> b) -> a -> b
$ Bool
isAlive Bool -> Bool -> Bool
&& Bool
isFresh
  where
    serverSendTime :: Millisecond
serverSendTime = Millisecond
txrxTime
    rtt :: Millisecond
rtt = Maybe Millisecond -> Millisecond
forall a. HasCallStack => Maybe a -> a
fromJust Maybe Millisecond
estimatedRTT
    age :: Second
age = Second -> TLS13TicketInfo -> Second
obfuscatedAgeToAge Second
obfAge TLS13TicketInfo
tinfo
    expectedArrivalTime :: Millisecond
expectedArrivalTime = Millisecond
serverSendTime Millisecond -> Millisecond -> Millisecond
forall a. Num a => a -> a -> a
+ Millisecond
rtt Millisecond -> Millisecond -> Millisecond
forall a. Num a => a -> a -> a
+ Second -> Millisecond
forall a b. (Integral a, Num b) => a -> b
fromIntegral Second
age
    isAlive :: Bool
isAlive = Second -> TLS13TicketInfo -> Bool
isAgeValid Second
age TLS13TicketInfo
tinfo

getCurrentTimeFromBase :: IO Millisecond
getCurrentTimeFromBase :: IO Millisecond
getCurrentTimeFromBase = UnixTime -> Millisecond
millisecondsFromBase (UnixTime -> Millisecond) -> IO UnixTime -> IO Millisecond
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> IO UnixTime
getUnixTime

millisecondsFromBase :: UnixTime -> Millisecond
millisecondsFromBase :: UnixTime -> Millisecond
millisecondsFromBase (UnixTime (CTime Int64
s) Int32
us) =
    Int64 -> Millisecond
forall a b. (Integral a, Num b) => a -> b
fromIntegral ((Int64
s Int64 -> Int64 -> Int64
forall a. Num a => a -> a -> a
- Int64
base) Int64 -> Int64 -> Int64
forall a. Num a => a -> a -> a
* Int64
1000) Millisecond -> Millisecond -> Millisecond
forall a. Num a => a -> a -> a
+ Int32 -> Millisecond
forall a b. (Integral a, Num b) => a -> b
fromIntegral (Int32
us Int32 -> Int32 -> Int32
forall a. Integral a => a -> a -> a
`div` Int32
1000)
  where
    base :: Int64
base = Int64
1483228800

-- UnixTime (CTime base) _= parseUnixTimeGMT webDateFormat "Sun, 01 Jan 2017 00:00:00 GMT"

----------------------------------------------------------------

getSessionData13
    :: Context -> Cipher -> TLS13TicketInfo -> Int -> ByteString -> IO SessionData
getSessionData13 :: Context
-> Cipher -> TLS13TicketInfo -> Int -> ByteString -> IO SessionData
getSessionData13 Context
ctx Cipher
usedCipher TLS13TicketInfo
tinfo Int
maxSize ByteString
psk = do
    Version
ver <- Context -> TLSSt Version -> IO Version
forall a. Context -> TLSSt a -> IO a
usingState_ Context
ctx TLSSt Version
getVersion
    Maybe ByteString
malpn <- Context -> TLSSt (Maybe ByteString) -> IO (Maybe ByteString)
forall a. Context -> TLSSt a -> IO a
usingState_ Context
ctx TLSSt (Maybe ByteString)
getNegotiatedProtocol
    Maybe String
sni <- Context -> TLSSt (Maybe String) -> IO (Maybe String)
forall a. Context -> TLSSt a -> IO a
usingState_ Context
ctx TLSSt (Maybe String)
getClientSNI
    Maybe Group
mgrp <- Context -> HandshakeM (Maybe Group) -> IO (Maybe Group)
forall (m :: * -> *) a. MonadIO m => Context -> HandshakeM a -> m a
usingHState Context
ctx HandshakeM (Maybe Group)
getSupportedGroup
    SessionData -> IO SessionData
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return
        SessionData
            { sessionVersion :: Version
sessionVersion = Version
ver
            , sessionCipher :: CipherID
sessionCipher = Cipher -> CipherID
cipherID Cipher
usedCipher
            , sessionCompression :: CompressionID
sessionCompression = CompressionID
0
            , sessionClientSNI :: Maybe String
sessionClientSNI = Maybe String
sni
            , sessionSecret :: ByteString
sessionSecret = ByteString
psk
            , sessionGroup :: Maybe Group
sessionGroup = Maybe Group
mgrp
            , sessionTicketInfo :: Maybe TLS13TicketInfo
sessionTicketInfo = TLS13TicketInfo -> Maybe TLS13TicketInfo
forall a. a -> Maybe a
Just TLS13TicketInfo
tinfo
            , sessionALPN :: Maybe ByteString
sessionALPN = Maybe ByteString
malpn
            , sessionMaxEarlyDataSize :: Int
sessionMaxEarlyDataSize = Int
maxSize
            , sessionFlags :: [SessionFlag]
sessionFlags = []
            }

----------------------------------------------------------------

-- Word32 is used in TLS 1.3 protocol.
-- Int is used for API for Haskell TLS because it is natural.
-- If Int is 64 bits, users can specify bigger number than Word32.
-- If Int is 32 bits, 2^31 or larger may be converted into minus numbers.
safeNonNegative32 :: (Num a, Ord a, FiniteBits a) => a -> a
safeNonNegative32 :: forall a. (Num a, Ord a, FiniteBits a) => a -> a
safeNonNegative32 a
x
    | a
x a -> a -> Bool
forall a. Ord a => a -> a -> Bool
<= a
0 = a
0
    | a -> Int
forall b. FiniteBits b => b -> Int
finiteBitSize a
x Int -> Int -> Bool
forall a. Ord a => a -> a -> Bool
<= Int
32 = a
x
    | Bool
otherwise = a
x a -> a -> a
forall a. Ord a => a -> a -> a
`min` Second -> a
forall a b. (Integral a, Num b) => a -> b
fromIntegral (Second
forall a. Bounded a => a
maxBound :: Word32)

----------------------------------------------------------------

newtype RecvHandshake13M m a = RecvHandshake13M (StateT [Handshake13] m a)
    deriving ((forall a b.
 (a -> b) -> RecvHandshake13M m a -> RecvHandshake13M m b)
-> (forall a b. a -> RecvHandshake13M m b -> RecvHandshake13M m a)
-> Functor (RecvHandshake13M m)
forall a b. a -> RecvHandshake13M m b -> RecvHandshake13M m a
forall a b.
(a -> b) -> RecvHandshake13M m a -> RecvHandshake13M m b
forall (m :: * -> *) a b.
Functor m =>
a -> RecvHandshake13M m b -> RecvHandshake13M m a
forall (m :: * -> *) a b.
Functor m =>
(a -> b) -> RecvHandshake13M m a -> RecvHandshake13M m b
forall (f :: * -> *).
(forall a b. (a -> b) -> f a -> f b)
-> (forall a b. a -> f b -> f a) -> Functor f
$cfmap :: forall (m :: * -> *) a b.
Functor m =>
(a -> b) -> RecvHandshake13M m a -> RecvHandshake13M m b
fmap :: forall a b.
(a -> b) -> RecvHandshake13M m a -> RecvHandshake13M m b
$c<$ :: forall (m :: * -> *) a b.
Functor m =>
a -> RecvHandshake13M m b -> RecvHandshake13M m a
<$ :: forall a b. a -> RecvHandshake13M m b -> RecvHandshake13M m a
Functor, Functor (RecvHandshake13M m)
Functor (RecvHandshake13M m) =>
(forall a. a -> RecvHandshake13M m a)
-> (forall a b.
    RecvHandshake13M m (a -> b)
    -> RecvHandshake13M m a -> RecvHandshake13M m b)
-> (forall a b c.
    (a -> b -> c)
    -> RecvHandshake13M m a
    -> RecvHandshake13M m b
    -> RecvHandshake13M m c)
-> (forall a b.
    RecvHandshake13M m a
    -> RecvHandshake13M m b -> RecvHandshake13M m b)
-> (forall a b.
    RecvHandshake13M m a
    -> RecvHandshake13M m b -> RecvHandshake13M m a)
-> Applicative (RecvHandshake13M m)
forall a. a -> RecvHandshake13M m a
forall a b.
RecvHandshake13M m a
-> RecvHandshake13M m b -> RecvHandshake13M m a
forall a b.
RecvHandshake13M m a
-> RecvHandshake13M m b -> RecvHandshake13M m b
forall a b.
RecvHandshake13M m (a -> b)
-> RecvHandshake13M m a -> RecvHandshake13M m b
forall a b c.
(a -> b -> c)
-> RecvHandshake13M m a
-> RecvHandshake13M m b
-> RecvHandshake13M m c
forall (m :: * -> *). Monad m => Functor (RecvHandshake13M m)
forall (m :: * -> *) a. Monad m => a -> RecvHandshake13M m a
forall (m :: * -> *) a b.
Monad m =>
RecvHandshake13M m a
-> RecvHandshake13M m b -> RecvHandshake13M m a
forall (m :: * -> *) a b.
Monad m =>
RecvHandshake13M m a
-> RecvHandshake13M m b -> RecvHandshake13M m b
forall (m :: * -> *) a b.
Monad m =>
RecvHandshake13M m (a -> b)
-> RecvHandshake13M m a -> RecvHandshake13M m b
forall (m :: * -> *) a b c.
Monad m =>
(a -> b -> c)
-> RecvHandshake13M m a
-> RecvHandshake13M m b
-> RecvHandshake13M m c
forall (f :: * -> *).
Functor f =>
(forall a. a -> f a)
-> (forall a b. f (a -> b) -> f a -> f b)
-> (forall a b c. (a -> b -> c) -> f a -> f b -> f c)
-> (forall a b. f a -> f b -> f b)
-> (forall a b. f a -> f b -> f a)
-> Applicative f
$cpure :: forall (m :: * -> *) a. Monad m => a -> RecvHandshake13M m a
pure :: forall a. a -> RecvHandshake13M m a
$c<*> :: forall (m :: * -> *) a b.
Monad m =>
RecvHandshake13M m (a -> b)
-> RecvHandshake13M m a -> RecvHandshake13M m b
<*> :: forall a b.
RecvHandshake13M m (a -> b)
-> RecvHandshake13M m a -> RecvHandshake13M m b
$cliftA2 :: forall (m :: * -> *) a b c.
Monad m =>
(a -> b -> c)
-> RecvHandshake13M m a
-> RecvHandshake13M m b
-> RecvHandshake13M m c
liftA2 :: forall a b c.
(a -> b -> c)
-> RecvHandshake13M m a
-> RecvHandshake13M m b
-> RecvHandshake13M m c
$c*> :: forall (m :: * -> *) a b.
Monad m =>
RecvHandshake13M m a
-> RecvHandshake13M m b -> RecvHandshake13M m b
*> :: forall a b.
RecvHandshake13M m a
-> RecvHandshake13M m b -> RecvHandshake13M m b
$c<* :: forall (m :: * -> *) a b.
Monad m =>
RecvHandshake13M m a
-> RecvHandshake13M m b -> RecvHandshake13M m a
<* :: forall a b.
RecvHandshake13M m a
-> RecvHandshake13M m b -> RecvHandshake13M m a
Applicative, Applicative (RecvHandshake13M m)
Applicative (RecvHandshake13M m) =>
(forall a b.
 RecvHandshake13M m a
 -> (a -> RecvHandshake13M m b) -> RecvHandshake13M m b)
-> (forall a b.
    RecvHandshake13M m a
    -> RecvHandshake13M m b -> RecvHandshake13M m b)
-> (forall a. a -> RecvHandshake13M m a)
-> Monad (RecvHandshake13M m)
forall a. a -> RecvHandshake13M m a
forall a b.
RecvHandshake13M m a
-> RecvHandshake13M m b -> RecvHandshake13M m b
forall a b.
RecvHandshake13M m a
-> (a -> RecvHandshake13M m b) -> RecvHandshake13M m b
forall (m :: * -> *). Monad m => Applicative (RecvHandshake13M m)
forall (m :: * -> *) a. Monad m => a -> RecvHandshake13M m a
forall (m :: * -> *) a b.
Monad m =>
RecvHandshake13M m a
-> RecvHandshake13M m b -> RecvHandshake13M m b
forall (m :: * -> *) a b.
Monad m =>
RecvHandshake13M m a
-> (a -> RecvHandshake13M m b) -> RecvHandshake13M m b
forall (m :: * -> *).
Applicative m =>
(forall a b. m a -> (a -> m b) -> m b)
-> (forall a b. m a -> m b -> m b)
-> (forall a. a -> m a)
-> Monad m
$c>>= :: forall (m :: * -> *) a b.
Monad m =>
RecvHandshake13M m a
-> (a -> RecvHandshake13M m b) -> RecvHandshake13M m b
>>= :: forall a b.
RecvHandshake13M m a
-> (a -> RecvHandshake13M m b) -> RecvHandshake13M m b
$c>> :: forall (m :: * -> *) a b.
Monad m =>
RecvHandshake13M m a
-> RecvHandshake13M m b -> RecvHandshake13M m b
>> :: forall a b.
RecvHandshake13M m a
-> RecvHandshake13M m b -> RecvHandshake13M m b
$creturn :: forall (m :: * -> *) a. Monad m => a -> RecvHandshake13M m a
return :: forall a. a -> RecvHandshake13M m a
Monad, Monad (RecvHandshake13M m)
Monad (RecvHandshake13M m) =>
(forall a. IO a -> RecvHandshake13M m a)
-> MonadIO (RecvHandshake13M m)
forall a. IO a -> RecvHandshake13M m a
forall (m :: * -> *).
Monad m =>
(forall a. IO a -> m a) -> MonadIO m
forall (m :: * -> *). MonadIO m => Monad (RecvHandshake13M m)
forall (m :: * -> *) a. MonadIO m => IO a -> RecvHandshake13M m a
$cliftIO :: forall (m :: * -> *) a. MonadIO m => IO a -> RecvHandshake13M m a
liftIO :: forall a. IO a -> RecvHandshake13M m a
MonadIO)

recvHandshake13
    :: MonadIO m
    => Context
    -> (Handshake13 -> RecvHandshake13M m a)
    -> RecvHandshake13M m a
recvHandshake13 :: forall (m :: * -> *) a.
MonadIO m =>
Context
-> (Handshake13 -> RecvHandshake13M m a) -> RecvHandshake13M m a
recvHandshake13 Context
ctx Handshake13 -> RecvHandshake13M m a
f = Context -> RecvHandshake13M m Handshake13
forall (m :: * -> *).
MonadIO m =>
Context -> RecvHandshake13M m Handshake13
getHandshake13 Context
ctx RecvHandshake13M m Handshake13
-> (Handshake13 -> RecvHandshake13M m a) -> RecvHandshake13M m a
forall a b.
RecvHandshake13M m a
-> (a -> RecvHandshake13M m b) -> RecvHandshake13M m b
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= Handshake13 -> RecvHandshake13M m a
f

recvHandshake13hash
    :: MonadIO m
    => Context
    -> (ByteString -> Handshake13 -> RecvHandshake13M m a)
    -> RecvHandshake13M m a
recvHandshake13hash :: forall (m :: * -> *) a.
MonadIO m =>
Context
-> (ByteString -> Handshake13 -> RecvHandshake13M m a)
-> RecvHandshake13M m a
recvHandshake13hash Context
ctx ByteString -> Handshake13 -> RecvHandshake13M m a
f = do
    ByteString
d <- Context -> RecvHandshake13M m ByteString
forall (m :: * -> *). MonadIO m => Context -> m ByteString
transcriptHash Context
ctx
    Context -> RecvHandshake13M m Handshake13
forall (m :: * -> *).
MonadIO m =>
Context -> RecvHandshake13M m Handshake13
getHandshake13 Context
ctx RecvHandshake13M m Handshake13
-> (Handshake13 -> RecvHandshake13M m a) -> RecvHandshake13M m a
forall a b.
RecvHandshake13M m a
-> (a -> RecvHandshake13M m b) -> RecvHandshake13M m b
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= ByteString -> Handshake13 -> RecvHandshake13M m a
f ByteString
d

getHandshake13 :: MonadIO m => Context -> RecvHandshake13M m Handshake13
getHandshake13 :: forall (m :: * -> *).
MonadIO m =>
Context -> RecvHandshake13M m Handshake13
getHandshake13 Context
ctx = StateT [Handshake13] m Handshake13
-> RecvHandshake13M m Handshake13
forall (m :: * -> *) a.
StateT [Handshake13] m a -> RecvHandshake13M m a
RecvHandshake13M (StateT [Handshake13] m Handshake13
 -> RecvHandshake13M m Handshake13)
-> StateT [Handshake13] m Handshake13
-> RecvHandshake13M m Handshake13
forall a b. (a -> b) -> a -> b
$ do
    [Handshake13]
currentState <- StateT [Handshake13] m [Handshake13]
forall s (m :: * -> *). MonadState s m => m s
get
    case [Handshake13]
currentState of
        (Handshake13
h : [Handshake13]
hs) -> Handshake13 -> [Handshake13] -> StateT [Handshake13] m Handshake13
forall {m :: * -> *} {s}.
(MonadIO m, MonadState s m) =>
Handshake13 -> s -> m Handshake13
found Handshake13
h [Handshake13]
hs
        [] -> StateT [Handshake13] m Handshake13
recvLoop
  where
    found :: Handshake13 -> s -> m Handshake13
found Handshake13
h s
hs = IO () -> m ()
forall a. IO a -> m a
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (Context -> Handshake13 -> IO ()
processHandshake13 Context
ctx Handshake13
h) m () -> m () -> m ()
forall a b. m a -> m b -> m b
forall (m :: * -> *) a b. Monad m => m a -> m b -> m b
>> s -> m ()
forall s (m :: * -> *). MonadState s m => s -> m ()
put s
hs m () -> m Handshake13 -> m Handshake13
forall a b. m a -> m b -> m b
forall (m :: * -> *) a b. Monad m => m a -> m b -> m b
>> Handshake13 -> m Handshake13
forall a. a -> m a
forall (m :: * -> *) a. Monad m => a -> m a
return Handshake13
h
    recvLoop :: StateT [Handshake13] m Handshake13
recvLoop = do
        Either TLSError Packet13
epkt <- IO (Either TLSError Packet13)
-> StateT [Handshake13] m (Either TLSError Packet13)
forall a. IO a -> StateT [Handshake13] m a
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (Context -> IO (Either TLSError Packet13)
recvPacket13 Context
ctx)
        case Either TLSError Packet13
epkt of
            Right (Handshake13 []) -> String -> StateT [Handshake13] m Handshake13
forall a. HasCallStack => String -> a
error String
"invalid recvPacket13 result"
            Right (Handshake13 (Handshake13
h : [Handshake13]
hs)) -> Handshake13 -> [Handshake13] -> StateT [Handshake13] m Handshake13
forall {m :: * -> *} {s}.
(MonadIO m, MonadState s m) =>
Handshake13 -> s -> m Handshake13
found Handshake13
h [Handshake13]
hs
            Right Packet13
ChangeCipherSpec13 -> StateT [Handshake13] m Handshake13
recvLoop
            Right Packet13
x -> String -> Maybe String -> StateT [Handshake13] m Handshake13
forall (m :: * -> *) a. MonadIO m => String -> Maybe String -> m a
unexpected (Packet13 -> String
forall a. Show a => a -> String
show Packet13
x) (String -> Maybe String
forall a. a -> Maybe a
Just String
"handshake 13")
            Left TLSError
err -> TLSError -> StateT [Handshake13] m Handshake13
forall (m :: * -> *) a. MonadIO m => TLSError -> m a
throwCore TLSError
err

runRecvHandshake13 :: MonadIO m => RecvHandshake13M m a -> m a
runRecvHandshake13 :: forall (m :: * -> *) a. MonadIO m => RecvHandshake13M m a -> m a
runRecvHandshake13 (RecvHandshake13M StateT [Handshake13] m a
f) = do
    (a
result, [Handshake13]
new) <- StateT [Handshake13] m a -> [Handshake13] -> m (a, [Handshake13])
forall s (m :: * -> *) a. StateT s m a -> s -> m (a, s)
runStateT StateT [Handshake13] m a
f []
    Bool -> m () -> m ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
unless ([Handshake13] -> Bool
forall a. [a] -> Bool
forall (t :: * -> *) a. Foldable t => t a -> Bool
null [Handshake13]
new) (m () -> m ()) -> m () -> m ()
forall a b. (a -> b) -> a -> b
$ String -> Maybe String -> m ()
forall (m :: * -> *) a. MonadIO m => String -> Maybe String -> m a
unexpected String
"spurious handshake 13" Maybe String
forall a. Maybe a
Nothing
    a -> m a
forall a. a -> m a
forall (m :: * -> *) a. Monad m => a -> m a
return a
result

----------------------------------------------------------------

-- some hash/signature combinations have been deprecated in TLS13 and should
-- not be used
checkHashSignatureValid13 :: HashAndSignatureAlgorithm -> IO ()
checkHashSignatureValid13 :: HashAndSignatureAlgorithm -> IO ()
checkHashSignatureValid13 HashAndSignatureAlgorithm
hs =
    Bool -> IO () -> IO ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
unless (HashAndSignatureAlgorithm -> Bool
isHashSignatureValid13 HashAndSignatureAlgorithm
hs) (IO () -> IO ()) -> IO () -> IO ()
forall a b. (a -> b) -> a -> b
$
        let msg :: String
msg = String
"invalid TLS13 hash and signature algorithm: " String -> String -> String
forall a. [a] -> [a] -> [a]
++ HashAndSignatureAlgorithm -> String
forall a. Show a => a -> String
show HashAndSignatureAlgorithm
hs
         in TLSError -> IO ()
forall (m :: * -> *) a. MonadIO m => TLSError -> m a
throwCore (TLSError -> IO ()) -> TLSError -> IO ()
forall a b. (a -> b) -> a -> b
$ String -> AlertDescription -> TLSError
Error_Protocol String
msg AlertDescription
IllegalParameter

isHashSignatureValid13 :: HashAndSignatureAlgorithm -> Bool
isHashSignatureValid13 :: HashAndSignatureAlgorithm -> Bool
isHashSignatureValid13 (HashAlgorithm
HashIntrinsic, SignatureAlgorithm
s) =
    SignatureAlgorithm
s
        SignatureAlgorithm -> [SignatureAlgorithm] -> Bool
forall a. Eq a => a -> [a] -> Bool
forall (t :: * -> *) a. (Foldable t, Eq a) => a -> t a -> Bool
`elem` [ SignatureAlgorithm
SignatureRSApssRSAeSHA256
               , SignatureAlgorithm
SignatureRSApssRSAeSHA384
               , SignatureAlgorithm
SignatureRSApssRSAeSHA512
               , SignatureAlgorithm
SignatureEd25519
               , SignatureAlgorithm
SignatureEd448
               , SignatureAlgorithm
SignatureRSApsspssSHA256
               , SignatureAlgorithm
SignatureRSApsspssSHA384
               , SignatureAlgorithm
SignatureRSApsspssSHA512
               ]
isHashSignatureValid13 (HashAlgorithm
h, SignatureAlgorithm
SignatureECDSA) =
    HashAlgorithm
h HashAlgorithm -> [HashAlgorithm] -> Bool
forall a. Eq a => a -> [a] -> Bool
forall (t :: * -> *) a. (Foldable t, Eq a) => a -> t a -> Bool
`elem` [HashAlgorithm
HashSHA256, HashAlgorithm
HashSHA384, HashAlgorithm
HashSHA512]
isHashSignatureValid13 HashAndSignatureAlgorithm
_ = Bool
False

----------------------------------------------------------------

calculateEarlySecret
    :: Context
    -> CipherChoice
    -> Either ByteString (BaseSecret EarlySecret)
    -> Bool
    -> IO (SecretPair EarlySecret)
calculateEarlySecret :: Context
-> CipherChoice
-> Either ByteString (BaseSecret EarlySecret)
-> Bool
-> IO (SecretPair EarlySecret)
calculateEarlySecret Context
ctx CipherChoice
choice Either ByteString (BaseSecret EarlySecret)
maux Bool
initialized = do
    ByteString
hCh <-
        if Bool
initialized
            then Context -> IO ByteString
forall (m :: * -> *). MonadIO m => Context -> m ByteString
transcriptHash Context
ctx
            else do
                [ByteString]
hmsgs <- Context -> HandshakeM [ByteString] -> IO [ByteString]
forall (m :: * -> *) a. MonadIO m => Context -> HandshakeM a -> m a
usingHState Context
ctx HandshakeM [ByteString]
getHandshakeMessages
                ByteString -> IO ByteString
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (ByteString -> IO ByteString) -> ByteString -> IO ByteString
forall a b. (a -> b) -> a -> b
$ Hash -> ByteString -> ByteString
hash Hash
usedHash (ByteString -> ByteString) -> ByteString -> ByteString
forall a b. (a -> b) -> a -> b
$ [ByteString] -> ByteString
B.concat [ByteString]
hmsgs
    let earlySecret :: ByteString
earlySecret = case Either ByteString (BaseSecret EarlySecret)
maux of
            Right (BaseSecret ByteString
sec) -> ByteString
sec
            Left ByteString
psk -> Hash -> ByteString -> ByteString -> ByteString
hkdfExtract Hash
usedHash ByteString
zero ByteString
psk
        clientEarlySecret :: ByteString
clientEarlySecret = Hash -> ByteString -> ByteString -> ByteString -> ByteString
deriveSecret Hash
usedHash ByteString
earlySecret ByteString
"c e traffic" ByteString
hCh
        cets :: ClientTrafficSecret EarlySecret
cets = ByteString -> ClientTrafficSecret EarlySecret
forall a. ByteString -> ClientTrafficSecret a
ClientTrafficSecret ByteString
clientEarlySecret :: ClientTrafficSecret EarlySecret
    Context -> ClientTrafficSecret EarlySecret -> IO ()
forall a. LogLabel a => Context -> a -> IO ()
logKey Context
ctx ClientTrafficSecret EarlySecret
cets
    SecretPair EarlySecret -> IO (SecretPair EarlySecret)
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (SecretPair EarlySecret -> IO (SecretPair EarlySecret))
-> SecretPair EarlySecret -> IO (SecretPair EarlySecret)
forall a b. (a -> b) -> a -> b
$ BaseSecret EarlySecret
-> ClientTrafficSecret EarlySecret -> SecretPair EarlySecret
forall a. BaseSecret a -> ClientTrafficSecret a -> SecretPair a
SecretPair (ByteString -> BaseSecret EarlySecret
forall a. ByteString -> BaseSecret a
BaseSecret ByteString
earlySecret) ClientTrafficSecret EarlySecret
cets
  where
    usedHash :: Hash
usedHash = CipherChoice -> Hash
cHash CipherChoice
choice
    zero :: ByteString
zero = CipherChoice -> ByteString
cZero CipherChoice
choice

initEarlySecret :: CipherChoice -> Maybe ByteString -> BaseSecret EarlySecret
initEarlySecret :: CipherChoice -> Maybe ByteString -> BaseSecret EarlySecret
initEarlySecret CipherChoice
choice Maybe ByteString
mpsk = ByteString -> BaseSecret EarlySecret
forall a. ByteString -> BaseSecret a
BaseSecret ByteString
sec
  where
    sec :: ByteString
sec = Hash -> ByteString -> ByteString -> ByteString
hkdfExtract Hash
usedHash ByteString
zero ByteString
zeroOrPSK
    usedHash :: Hash
usedHash = CipherChoice -> Hash
cHash CipherChoice
choice
    zero :: ByteString
zero = CipherChoice -> ByteString
cZero CipherChoice
choice
    zeroOrPSK :: ByteString
zeroOrPSK = ByteString -> Maybe ByteString -> ByteString
forall a. a -> Maybe a -> a
fromMaybe ByteString
zero Maybe ByteString
mpsk

calculateHandshakeSecret
    :: Context
    -> CipherChoice
    -> BaseSecret EarlySecret
    -> ByteString
    -> IO (SecretTriple HandshakeSecret)
calculateHandshakeSecret :: Context
-> CipherChoice
-> BaseSecret EarlySecret
-> ByteString
-> IO (SecretTriple HandshakeSecret)
calculateHandshakeSecret Context
ctx CipherChoice
choice (BaseSecret ByteString
sec) ByteString
ecdhe = do
    ByteString
hChSh <- Context -> IO ByteString
forall (m :: * -> *). MonadIO m => Context -> m ByteString
transcriptHash Context
ctx
    let handshakeSecret :: ByteString
handshakeSecret =
            Hash -> ByteString -> ByteString -> ByteString
hkdfExtract
                Hash
usedHash
                (Hash -> ByteString -> ByteString -> ByteString -> ByteString
deriveSecret Hash
usedHash ByteString
sec ByteString
"derived" (Hash -> ByteString -> ByteString
hash Hash
usedHash ByteString
""))
                ByteString
ecdhe
    let clientHandshakeSecret :: ByteString
clientHandshakeSecret = Hash -> ByteString -> ByteString -> ByteString -> ByteString
deriveSecret Hash
usedHash ByteString
handshakeSecret ByteString
"c hs traffic" ByteString
hChSh
        serverHandshakeSecret :: ByteString
serverHandshakeSecret = Hash -> ByteString -> ByteString -> ByteString -> ByteString
deriveSecret Hash
usedHash ByteString
handshakeSecret ByteString
"s hs traffic" ByteString
hChSh
    let shts :: ServerTrafficSecret HandshakeSecret
shts =
            ByteString -> ServerTrafficSecret HandshakeSecret
forall a. ByteString -> ServerTrafficSecret a
ServerTrafficSecret ByteString
serverHandshakeSecret :: ServerTrafficSecret HandshakeSecret
        chts :: ClientTrafficSecret HandshakeSecret
chts =
            ByteString -> ClientTrafficSecret HandshakeSecret
forall a. ByteString -> ClientTrafficSecret a
ClientTrafficSecret ByteString
clientHandshakeSecret :: ClientTrafficSecret HandshakeSecret
    Context -> ServerTrafficSecret HandshakeSecret -> IO ()
forall a. LogLabel a => Context -> a -> IO ()
logKey Context
ctx ServerTrafficSecret HandshakeSecret
shts
    Context -> ClientTrafficSecret HandshakeSecret -> IO ()
forall a. LogLabel a => Context -> a -> IO ()
logKey Context
ctx ClientTrafficSecret HandshakeSecret
chts
    SecretTriple HandshakeSecret -> IO (SecretTriple HandshakeSecret)
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (SecretTriple HandshakeSecret -> IO (SecretTriple HandshakeSecret))
-> SecretTriple HandshakeSecret
-> IO (SecretTriple HandshakeSecret)
forall a b. (a -> b) -> a -> b
$ BaseSecret HandshakeSecret
-> ClientTrafficSecret HandshakeSecret
-> ServerTrafficSecret HandshakeSecret
-> SecretTriple HandshakeSecret
forall a.
BaseSecret a
-> ClientTrafficSecret a -> ServerTrafficSecret a -> SecretTriple a
SecretTriple (ByteString -> BaseSecret HandshakeSecret
forall a. ByteString -> BaseSecret a
BaseSecret ByteString
handshakeSecret) ClientTrafficSecret HandshakeSecret
chts ServerTrafficSecret HandshakeSecret
shts
  where
    usedHash :: Hash
usedHash = CipherChoice -> Hash
cHash CipherChoice
choice

calculateApplicationSecret
    :: Context
    -> CipherChoice
    -> BaseSecret HandshakeSecret
    -> ByteString
    -> IO (SecretTriple ApplicationSecret)
calculateApplicationSecret :: Context
-> CipherChoice
-> BaseSecret HandshakeSecret
-> ByteString
-> IO (SecretTriple ApplicationSecret)
calculateApplicationSecret Context
ctx CipherChoice
choice (BaseSecret ByteString
sec) ByteString
hChSf = do
    let applicationSecret :: ByteString
applicationSecret =
            Hash -> ByteString -> ByteString -> ByteString
hkdfExtract
                Hash
usedHash
                (Hash -> ByteString -> ByteString -> ByteString -> ByteString
deriveSecret Hash
usedHash ByteString
sec ByteString
"derived" (Hash -> ByteString -> ByteString
hash Hash
usedHash ByteString
""))
                ByteString
zero
    let clientApplicationSecret0 :: ByteString
clientApplicationSecret0 = Hash -> ByteString -> ByteString -> ByteString -> ByteString
deriveSecret Hash
usedHash ByteString
applicationSecret ByteString
"c ap traffic" ByteString
hChSf
        serverApplicationSecret0 :: ByteString
serverApplicationSecret0 = Hash -> ByteString -> ByteString -> ByteString -> ByteString
deriveSecret Hash
usedHash ByteString
applicationSecret ByteString
"s ap traffic" ByteString
hChSf
        exporterSecret :: ByteString
exporterSecret = Hash -> ByteString -> ByteString -> ByteString -> ByteString
deriveSecret Hash
usedHash ByteString
applicationSecret ByteString
"exp master" ByteString
hChSf
    Context -> TLSSt () -> IO ()
forall a. Context -> TLSSt a -> IO a
usingState_ Context
ctx (TLSSt () -> IO ()) -> TLSSt () -> IO ()
forall a b. (a -> b) -> a -> b
$ ByteString -> TLSSt ()
setTLS13ExporterSecret ByteString
exporterSecret
    let sts0 :: ServerTrafficSecret ApplicationSecret
sts0 =
            ByteString -> ServerTrafficSecret ApplicationSecret
forall a. ByteString -> ServerTrafficSecret a
ServerTrafficSecret ByteString
serverApplicationSecret0
                :: ServerTrafficSecret ApplicationSecret
    let cts0 :: ClientTrafficSecret ApplicationSecret
cts0 =
            ByteString -> ClientTrafficSecret ApplicationSecret
forall a. ByteString -> ClientTrafficSecret a
ClientTrafficSecret ByteString
clientApplicationSecret0
                :: ClientTrafficSecret ApplicationSecret
    Context -> ServerTrafficSecret ApplicationSecret -> IO ()
forall a. LogLabel a => Context -> a -> IO ()
logKey Context
ctx ServerTrafficSecret ApplicationSecret
sts0
    Context -> ClientTrafficSecret ApplicationSecret -> IO ()
forall a. LogLabel a => Context -> a -> IO ()
logKey Context
ctx ClientTrafficSecret ApplicationSecret
cts0
    SecretTriple ApplicationSecret
-> IO (SecretTriple ApplicationSecret)
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (SecretTriple ApplicationSecret
 -> IO (SecretTriple ApplicationSecret))
-> SecretTriple ApplicationSecret
-> IO (SecretTriple ApplicationSecret)
forall a b. (a -> b) -> a -> b
$ BaseSecret ApplicationSecret
-> ClientTrafficSecret ApplicationSecret
-> ServerTrafficSecret ApplicationSecret
-> SecretTriple ApplicationSecret
forall a.
BaseSecret a
-> ClientTrafficSecret a -> ServerTrafficSecret a -> SecretTriple a
SecretTriple (ByteString -> BaseSecret ApplicationSecret
forall a. ByteString -> BaseSecret a
BaseSecret ByteString
applicationSecret) ClientTrafficSecret ApplicationSecret
cts0 ServerTrafficSecret ApplicationSecret
sts0
  where
    usedHash :: Hash
usedHash = CipherChoice -> Hash
cHash CipherChoice
choice
    zero :: ByteString
zero = CipherChoice -> ByteString
cZero CipherChoice
choice

calculateResumptionSecret
    :: Context
    -> CipherChoice
    -> BaseSecret ApplicationSecret
    -> IO (BaseSecret ResumptionSecret)
calculateResumptionSecret :: Context
-> CipherChoice
-> BaseSecret ApplicationSecret
-> IO (BaseSecret ResumptionSecret)
calculateResumptionSecret Context
ctx CipherChoice
choice (BaseSecret ByteString
sec) = do
    ByteString
hChCf <- Context -> IO ByteString
forall (m :: * -> *). MonadIO m => Context -> m ByteString
transcriptHash Context
ctx
    let resumptionSecret :: ByteString
resumptionSecret = Hash -> ByteString -> ByteString -> ByteString -> ByteString
deriveSecret Hash
usedHash ByteString
sec ByteString
"res master" ByteString
hChCf
    BaseSecret ResumptionSecret -> IO (BaseSecret ResumptionSecret)
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (BaseSecret ResumptionSecret -> IO (BaseSecret ResumptionSecret))
-> BaseSecret ResumptionSecret -> IO (BaseSecret ResumptionSecret)
forall a b. (a -> b) -> a -> b
$ ByteString -> BaseSecret ResumptionSecret
forall a. ByteString -> BaseSecret a
BaseSecret ByteString
resumptionSecret
  where
    usedHash :: Hash
usedHash = CipherChoice -> Hash
cHash CipherChoice
choice

derivePSK
    :: CipherChoice -> BaseSecret ResumptionSecret -> ByteString -> ByteString
derivePSK :: CipherChoice
-> BaseSecret ResumptionSecret -> ByteString -> ByteString
derivePSK CipherChoice
choice (BaseSecret ByteString
sec) ByteString
nonce =
    Hash -> ByteString -> ByteString -> ByteString -> Int -> ByteString
hkdfExpandLabel Hash
usedHash ByteString
sec ByteString
"resumption" ByteString
nonce Int
hashSize
  where
    usedHash :: Hash
usedHash = CipherChoice -> Hash
cHash CipherChoice
choice
    hashSize :: Int
hashSize = Hash -> Int
hashDigestSize Hash
usedHash

----------------------------------------------------------------

checkKeyShareKeyLength :: KeyShareEntry -> Bool
checkKeyShareKeyLength :: KeyShareEntry -> Bool
checkKeyShareKeyLength KeyShareEntry
ks = Group -> Int
keyShareKeyLength Group
grp Int -> Int -> Bool
forall a. Eq a => a -> a -> Bool
== ByteString -> Int
B.length ByteString
key
  where
    grp :: Group
grp = KeyShareEntry -> Group
keyShareEntryGroup KeyShareEntry
ks
    key :: ByteString
key = KeyShareEntry -> ByteString
keyShareEntryKeyExchange KeyShareEntry
ks

keyShareKeyLength :: Group -> Int
keyShareKeyLength :: Group -> Int
keyShareKeyLength Group
P256 = Int
65 -- 32 * 2 + 1
keyShareKeyLength Group
P384 = Int
97 -- 48 * 2 + 1
keyShareKeyLength Group
P521 = Int
133 -- 66 * 2 + 1
keyShareKeyLength Group
X25519 = Int
32
keyShareKeyLength Group
X448 = Int
56
keyShareKeyLength Group
FFDHE2048 = Int
256
keyShareKeyLength Group
FFDHE3072 = Int
384
keyShareKeyLength Group
FFDHE4096 = Int
512
keyShareKeyLength Group
FFDHE6144 = Int
768
keyShareKeyLength Group
FFDHE8192 = Int
1024
keyShareKeyLength Group
_ = String -> Int
forall a. HasCallStack => String -> a
error String
"keyShareKeyLength"

setRTT :: Context -> Millisecond -> IO ()
setRTT :: Context -> Millisecond -> IO ()
setRTT Context
ctx Millisecond
chSentTime = do
    Millisecond
shRecvTime <- IO Millisecond
getCurrentTimeFromBase
    let rtt' :: Millisecond
rtt' = Millisecond
shRecvTime Millisecond -> Millisecond -> Millisecond
forall a. Num a => a -> a -> a
- Millisecond
chSentTime
        rtt :: Millisecond
rtt = if Millisecond
rtt' Millisecond -> Millisecond -> Bool
forall a. Eq a => a -> a -> Bool
== Millisecond
0 then Millisecond
10 else Millisecond
rtt'
    Context -> (TLS13State -> TLS13State) -> IO ()
modifyTLS13State Context
ctx ((TLS13State -> TLS13State) -> IO ())
-> (TLS13State -> TLS13State) -> IO ()
forall a b. (a -> b) -> a -> b
$ \TLS13State
st -> TLS13State
st{tls13stRTT = rtt}