X-Git-Url: http://git.cielonegro.org/gitweb.cgi?p=Lucu.git;a=blobdiff_plain;f=Network%2FHTTP%2FLucu%2FInteraction.hs;h=7c43f96c5e7a12bcf3145771a7ea6b4976fed17e;hp=ac5c1d6285aa33d936d4ae23135cb09b4ef8e125;hb=246d66d6d3130e03834a6c3badc38711a1879aae;hpb=ea2b7838f1b3d9d4923a220a601be2e04cc559d7 diff --git a/Network/HTTP/Lucu/Interaction.hs b/Network/HTTP/Lucu/Interaction.hs index ac5c1d6..7c43f96 100644 --- a/Network/HTTP/Lucu/Interaction.hs +++ b/Network/HTTP/Lucu/Interaction.hs @@ -1,139 +1,250 @@ {-# LANGUAGE - OverloadedStrings + CPP + , DeriveDataTypeable + , ExistentialQuantification + , OverloadedStrings , RecordWildCards , UnicodeSyntax #-} module Network.HTTP.Lucu.Interaction ( Interaction(..) + , SomeInteraction(..) + , EndOfInteraction(..) + + , SyntacticallyInvalidInteraction(..) + , mkSyntacticallyInvalidInteraction + + , SemanticallyInvalidInteraction(..) + , mkSemanticallyInvalidInteraction + + , NormalInteraction(..) , InteractionState(..) + , ReceiveBodyRequest(..) + , mkNormalInteraction + , InteractionQueue - , newInteractionQueue - , newInteraction - , defaultPageContentType + , mkInteractionQueue - , setResponseStatus + , getCurrentDate ) where import Blaze.ByteString.Builder (Builder) +import Control.Applicative import Control.Concurrent.STM import Data.Ascii (Ascii) -import qualified Data.ByteString as BS +import Data.ByteString (ByteString) +import Data.Convertible.Base +import Data.Monoid.Unicode +import Data.Proxy import Data.Sequence (Seq) -import qualified Data.Sequence as S -import Data.Text (Text) +import Data.Time +import Data.Time.Format.HTTP +import Data.Typeable import Network.Socket import Network.HTTP.Lucu.Config +import Network.HTTP.Lucu.DefaultPage import Network.HTTP.Lucu.Headers -import Network.HTTP.Lucu.HttpVersion import Network.HTTP.Lucu.Preprocess import Network.HTTP.Lucu.Request import Network.HTTP.Lucu.Response +import Network.HTTP.Lucu.Utils +#if defined(HAVE_SSL) import OpenSSL.X509 - -data Interaction = Interaction { - itrConfig ∷ !Config - , itrLocalPort ∷ !PortNumber - , itrRemoteAddr ∷ !SockAddr - , itrRemoteCert ∷ !(Maybe X509) - , itrResourcePath ∷ !(Maybe [Text]) - , itrRequest ∷ !(Maybe Request) - - , itrExpectedContinue ∷ !(Maybe Bool) - , itrReqBodyLength ∷ !(Maybe RequestBodyLength) - - , itrReqBodyWanted ∷ !(TVar Int) - , itrReqBodyWasteAll ∷ !(TVar Bool) - , itrReqChunkIsOver ∷ !(TVar Bool) - , itrReceivedBody ∷ !(TVar (Seq BS.ByteString)) - , itrReceivedBodyLen ∷ !(TVar Int) - - , itrResponse ∷ !(TVar Response) - , itrWillChunkBody ∷ !(TVar Bool) - , itrWillDiscardBody ∷ !(TVar Bool) - , itrWillClose ∷ !(TVar Bool) - , itrBodyToSend ∷ !(TMVar Builder) - , itrSentNoBodySoFar ∷ !(TVar Bool) - - , itrState ∷ !(TVar InteractionState) - } +#endif +import Prelude.Unicode + +class Typeable i ⇒ Interaction i where + toInteraction ∷ i → SomeInteraction + toInteraction = SomeInteraction + + fromInteraction ∷ SomeInteraction → Maybe i + fromInteraction (SomeInteraction i) = cast i + +data SomeInteraction + = ∀i. Interaction i ⇒ SomeInteraction !i + deriving Typeable + +instance Interaction SomeInteraction where + toInteraction = id + fromInteraction = Just + +-- |'EndOfInteraction' is an 'Interaction' indicating the end of +-- (possibly pipelined) requests. The connection has already been +-- closed so no need to reply anything. +data EndOfInteraction = EndOfInteraction + deriving Typeable +instance Interaction EndOfInteraction + +-- |'SyntacticallyInvalidInteraction' is an 'Interaction' without even +-- a syntactically valid 'Request'. The response code will always be +-- 'BadRequest'. +data SyntacticallyInvalidInteraction + = SYI { + syiResponse ∷ !Response + , syiBodyToSend ∷ !Builder + } + deriving Typeable +instance Interaction SyntacticallyInvalidInteraction + +mkSyntacticallyInvalidInteraction ∷ Config + → IO SyntacticallyInvalidInteraction +mkSyntacticallyInvalidInteraction conf@(Config {..}) + = do date ← getCurrentDate + let res = setHeader "Server" cnfServerSoftware $ + setHeader "Date" date $ + setHeader "Content-Type" defaultPageContentType $ + emptyResponse BadRequest + body = defaultPageForResponse conf Nothing res + return SYI { + syiResponse = res + , syiBodyToSend = body + } + +-- |'SemanticallyInvalidInteraction' is an 'Interaction' without a +-- semantically valid 'Request'. The response code will always satisfy +-- 'isError'. +data SemanticallyInvalidInteraction + = SEI { + seiRequest ∷ !Request + , seiExpectedContinue ∷ !Bool + , seiReqBodyLength ∷ !(Maybe RequestBodyLength) + + , seiResponse ∷ !Response + , seiWillChunkBody ∷ !Bool + , seiWillClose ∷ !Bool + , seiBodyToSend ∷ !Builder + } + deriving Typeable +instance Interaction SemanticallyInvalidInteraction + +mkSemanticallyInvalidInteraction ∷ Config + → AugmentedRequest + → IO SemanticallyInvalidInteraction +mkSemanticallyInvalidInteraction config@(Config {..}) (AugmentedRequest {..}) + = do date ← getCurrentDate + let res = setHeader "Server" cnfServerSoftware $ + setHeader "Date" date $ + setHeader "Content-Type" defaultPageContentType $ + ( if arWillChunkBody + then setHeader "Transfer-Encoding" "chunked" + else id + ) $ + ( if arWillClose + then setHeader "Connection" "close" + else id + ) $ + emptyResponse arInitialStatus + body = defaultPageForResponse config (Just arRequest) res + return SEI { + seiRequest = arRequest + , seiExpectedContinue = arExpectedContinue + , seiReqBodyLength = arReqBodyLength + + , seiResponse = res + , seiWillChunkBody = arWillChunkBody + , seiWillClose = arWillClose + , seiBodyToSend = body + } + +-- |'NormalInteraction' is an 'Interaction' with a semantically +-- correct 'Request'. +data NormalInteraction + = NI { + niConfig ∷ !Config + , niRemoteAddr ∷ !SockAddr +#if defined(HAVE_SSL) + , niRemoteCert ∷ !(Maybe X509) +#endif + , niRequest ∷ !Request + , niResourcePath ∷ !Path + , niExpectedContinue ∷ !Bool + , niReqBodyLength ∷ !(Maybe RequestBodyLength) + + , niReceiveBodyReq ∷ !(TMVar ReceiveBodyRequest) + , niReceivedBody ∷ !(TMVar ByteString) + + , niResponse ∷ !(TVar Response) + , niSendContinue ∷ !(TMVar Bool) + , niWillChunkBody ∷ !Bool + , niWillClose ∷ !(TVar Bool) + , niResponseHasCType ∷ !(TVar Bool) + -- FIXME: use TBChan Builder (in stm-chans package) + , niBodyToSend ∷ !(TMVar Builder) + + , niState ∷ !(TVar InteractionState) + } + deriving Typeable +instance Interaction NormalInteraction + +data ReceiveBodyRequest + = ReceiveBody !Int -- ^ Maximum number of octets to receive. + | WasteAll + deriving (Show, Eq) -- |The interaction state of Resource monad. 'ExaminingRequest' is the -- initial state. -data InteractionState = ExaminingRequest - | GettingBody - | DecidingHeader - | DecidingBody - | Done - deriving (Show, Eq, Ord, Enum) - -type InteractionQueue = TVar (Seq Interaction) - -newInteractionQueue ∷ IO InteractionQueue -newInteractionQueue = newTVarIO S.empty - -defaultPageContentType ∷ Ascii -defaultPageContentType = "application/xhtml+xml" - -newInteraction ∷ Config - → PortNumber - → SockAddr - → Maybe X509 - → Either StatusCode Request - → IO Interaction -newInteraction conf@(Config {..}) port addr cert request - = do let ar = preprocess cnfServerHost port request - res = Response { - resVersion = HttpVersion 1 1 - , resStatus = arInitialStatus ar - , resHeaders = singleton "Content-Type" defaultPageContentType - } - - reqBodyWanted ← newTVarIO 0 - reqBodyWasteAll ← newTVarIO False - reqChunkIsOver ← newTVarIO False - receivedBody ← newTVarIO S.empty - receivedBodyLen ← newTVarIO 0 - - response ← newTVarIO res - willChunkBody ← newTVarIO False - willDiscardBody ← newTVarIO False - willClose ← newTVarIO False - bodyToSend ← newEmptyTMVarIO - sentNoBodySoFar ← newTVarIO True - - state ← newTVarIO ExaminingRequest - - return Interaction { - itrConfig = conf - , itrLocalPort = port - , itrRemoteAddr = addr - , itrRemoteCert = cert - , itrResourcePath = Nothing - , itrRequest = arRequest ar - - , itrExpectedContinue = arExpectedContinue ar - , itrReqBodyLength = arReqBodyLength ar - - , itrReqBodyWanted = reqBodyWanted - , itrReqBodyWasteAll = reqBodyWasteAll - , itrReqChunkIsOver = reqChunkIsOver - , itrReceivedBody = receivedBody - , itrReceivedBodyLen = receivedBodyLen - - , itrResponse = response - , itrWillChunkBody = willChunkBody - , itrWillDiscardBody = willDiscardBody - , itrWillClose = willClose - , itrBodyToSend = bodyToSend - , itrSentNoBodySoFar = sentNoBodySoFar - - , itrState = state - } - -setResponseStatus ∷ Interaction → StatusCode → STM () -setResponseStatus (Interaction {..}) sc - = do res ← readTVar itrResponse - let res' = res { - resStatus = sc - } - writeTVar itrResponse res' +data InteractionState + = ExaminingRequest + | ReceivingBody + | DecidingHeader + | SendingBody + | Done + deriving (Show, Eq, Ord, Enum) + +mkNormalInteraction ∷ Config + → SockAddr +#if defined(HAVE_SSL) + → Maybe X509 +#endif + → AugmentedRequest + → Path + → IO NormalInteraction +#if defined(HAVE_SSL) +mkNormalInteraction config remoteAddr remoteCert (AugmentedRequest {..}) rsrcPath +#else +mkNormalInteraction config remoteAddr (AugmentedRequest {..}) rsrcPath +#endif + = do receiveBodyReq ← newEmptyTMVarIO + receivedBody ← newEmptyTMVarIO + + response ← newTVarIO $ emptyResponse arInitialStatus + sendContinue ← newEmptyTMVarIO + willClose ← newTVarIO arWillClose + responseHasCType ← newTVarIO False + bodyToSend ← newEmptyTMVarIO + + state ← newTVarIO ExaminingRequest + + return NI { + niConfig = config + , niRemoteAddr = remoteAddr +#if defined(HAVE_SSL) + , niRemoteCert = remoteCert +#endif + , niRequest = arRequest + , niResourcePath = rsrcPath + , niExpectedContinue = arExpectedContinue + , niReqBodyLength = arReqBodyLength + + , niReceiveBodyReq = receiveBodyReq + , niReceivedBody = receivedBody + + , niResponse = response + , niSendContinue = sendContinue + , niWillChunkBody = arWillChunkBody + , niWillClose = willClose + , niResponseHasCType = responseHasCType + , niBodyToSend = bodyToSend + + , niState = state + } + +type InteractionQueue = TVar (Seq SomeInteraction) + +mkInteractionQueue ∷ IO InteractionQueue +{-# INLINE mkInteractionQueue #-} +mkInteractionQueue = newTVarIO (∅) + +getCurrentDate ∷ IO Ascii +{-# INLINE getCurrentDate #-} +getCurrentDate = flip proxy http ∘ cs <$> getCurrentTime