#-}
module Network.HTTP.Lucu.Postprocess
( postprocess
- , completeUnconditionalHeaders
)
where
import Control.Applicative
import Control.Monad
import Control.Monad.Unicode
import Data.Ascii (Ascii, CIAscii, AsciiBuilder)
-import qualified Data.Ascii as A
+import Data.Convertible.Base
+import Data.Maybe
import Data.Monoid.Unicode
-import Data.Time
-import qualified Data.Time.HTTP as HTTP
import GHC.Conc (unsafeIOToSTM)
import Network.HTTP.Lucu.Abortion
import Network.HTTP.Lucu.Config
import Network.HTTP.Lucu.DefaultPage
import Network.HTTP.Lucu.Headers
-import Network.HTTP.Lucu.HttpVersion
import Network.HTTP.Lucu.Interaction
import Network.HTTP.Lucu.Request
import Network.HTTP.Lucu.Response
import Prelude.Unicode
-postprocess ∷ Interaction → STM ()
-postprocess itr@(Interaction {..})
- = do abortOnCertainConditions itr
+postprocess ∷ NormalInteraction → STM ()
+postprocess ni@(NI {..})
+ = do void $ tryPutTMVar niSendContinue False
+ abortOnCertainConditions ni
+ postprocessWithRequest ni
+ completeUnconditionalHeaders ni
- case itrRequest of
- Just req → postprocessWithRequest itr req
- Nothing → return ()
-
- updateResIO itr $ completeUnconditionalHeaders itrConfig
-
-abortOnCertainConditions ∷ Interaction → STM ()
-abortOnCertainConditions (Interaction {..})
- = readTVar itrResponse ≫= go
+abortOnCertainConditions ∷ NormalInteraction → STM ()
+abortOnCertainConditions (NI {..})
+ = readTVar niResponse ≫= go
where
go ∷ Response → STM ()
go res@(Response {..})
, isError
])
$ abort'
- $ A.toAsciiBuilder "Inappropriate status code for a response: "
- ⊕ printStatusCode resStatus
+ $ cs ("Inappropriate status code for a response: " ∷ Ascii)
+ ⊕ cs resStatus
- when ( resStatus â\89¡ MethodNotAllowed ∧
+ when ( resStatus â\89\88 MethodNotAllowed ∧
hasHeader "Allow" res )
$ abort'
- $ A.toAsciiBuilder "The status was "
- ⊕ printStatusCode resStatus
- ⊕ A.toAsciiBuilder " but no \"Allow\" header."
+ $ cs ("The status was " ∷ Ascii)
+ ⊕ cs resStatus
+ ⊕ cs (" but no \"Allow\" header." ∷ Ascii)
- when ( resStatus â\89¢ NotModified ∧
- isRedirection resStatus ∧
+ when ( resStatus â\89\89 NotModified ∧
+ isRedirection resStatus ∧
hasHeader "Location" res )
$ abort'
- $ A.toAsciiBuilder "The status code was "
- ⊕ printStatusCode resStatus
- ⊕ A.toAsciiBuilder " but no Location header."
+ $ cs ("The status code was " ∷ Ascii)
+ ⊕ cs resStatus
+ ⊕ cs (" but no Location header." ∷ Ascii)
abort' ∷ AsciiBuilder → STM ()
- abort' = abortSTM InternalServerError []
- ∘ Just
- ∘ A.toText
- ∘ A.fromAsciiBuilder
-
-postprocessWithRequest ∷ Interaction → Request → STM ()
-postprocessWithRequest itr@(Interaction {..}) (Request {..})
- = do willDiscardBody ← readTVar itrWillDiscardBody
- canHaveBody ← if willDiscardBody then
- return False
- else
- resCanHaveBody <$> readTVar itrResponse
+ abort' = throwSTM
+ ∘ mkAbortion' InternalServerError
+ ∘ cs
- updateRes itr
+postprocessWithRequest ∷ NormalInteraction → STM ()
+postprocessWithRequest ni@(NI {..})
+ = do updateRes ni
$ deleteHeader "Content-Length"
∘ deleteHeader "Transfer-Encoding"
+ canHaveBody ← resCanHaveBody <$> readTVar niResponse
if canHaveBody then
- do when (reqVersion ≡ HttpVersion 1 1)
- $ do writeHeader itr "Transfer-Encoding" (Just "chunked")
- writeTVar itrWillChunkBody True
- writeDefaultPageIfNeeded itr
+ do when niWillChunkBody
+ $ writeHeader ni "Transfer-Encoding" (Just "chunked")
+ when (reqMethod niRequest ≢ HEAD)
+ $ writeDefaultPageIfNeeded ni
else
- do writeTVar itrWillDiscardBody True
- -- These headers make sense for HEAD requests even
- -- when there won't be a response entity body.
- when (reqMethod ≢ HEAD)
- $ updateRes itr
- $ deleteHeader "Content-Type"
- ∘ deleteHeader "Etag"
- ∘ deleteHeader "Last-Modified"
-
- hasConnClose ← (≡ Just "close") <$> readCIHeader itr "Connection"
- willClose ← readTVar itrWillClose
+ -- These headers make sense for HEAD requests even when
+ -- there won't be a response entity body.
+ when (reqMethod niRequest ≢ HEAD)
+ $ updateRes ni
+ $ deleteHeader "Content-Type"
+ ∘ deleteHeader "Etag"
+ ∘ deleteHeader "Last-Modified"
+
+ hasConnClose ← (≡ Just "close") <$> readCIHeader ni "Connection"
+ willClose ← readTVar niWillClose
when (hasConnClose ∧ (¬) willClose)
- $ writeTVar itrWillClose True
+ $ writeTVar niWillClose True
when ((¬) hasConnClose ∧ willClose)
- $ writeHeader itr "Connection" (Just "close")
+ $ writeHeader ni "Connection" (Just "close")
-writeDefaultPageIfNeeded ∷ Interaction → STM ()
-writeDefaultPageIfNeeded itr@(Interaction {..})
- = do resHasCType ← readTVar itrResponseHasCType
+writeDefaultPageIfNeeded ∷ NormalInteraction → STM ()
+writeDefaultPageIfNeeded ni@(NI {..})
+ = do resHasCType ← readTVar niResponseHasCType
unless resHasCType
- $ do writeHeader itr "Content-Type" (Just defaultPageContentType)
- writeHeader itr "Content-Encoding" Nothing
- res ← readTVar itrResponse
- let page = getDefaultPage itrConfig itrRequest res
- putTMVar itrBodyToSend page
-
-writeHeader ∷ Interaction → CIAscii → Maybe Ascii → STM ()
+ $ do writeHeader ni "Content-Type" $ Just defaultPageContentType
+ writeHeader ni "Content-Encoding" Nothing
+ res ← readTVar niResponse
+ let body = defaultPageForResponse niConfig (Just niRequest) res
+ putTMVar niBodyToSend body
+
+completeUnconditionalHeaders ∷ NormalInteraction → STM ()
+completeUnconditionalHeaders ni@(NI {..})
+ = do srv ← readHeader ni "Server"
+ when (isNothing srv) $
+ writeHeader ni "Server" $ Just $ cnfServerSoftware niConfig
+
+ date ← readHeader ni "Date"
+ when (isNothing date) $
+ do date' ← unsafeIOToSTM getCurrentDate
+ writeHeader ni "Date" $ Just date'
+
+writeHeader ∷ NormalInteraction → CIAscii → Maybe Ascii → STM ()
{-# INLINE writeHeader #-}
-writeHeader itr k v
+writeHeader ni k v
= case v of
- Just v' → updateRes itr $ setHeader k v'
- Nothing → updateRes itr $ deleteHeader k
+ Just v' → updateRes ni $ setHeader k v'
+ Nothing → updateRes ni $ deleteHeader k
-readCIHeader ∷ Interaction → CIAscii → STM (Maybe CIAscii)
+readHeader ∷ NormalInteraction → CIAscii → STM (Maybe Ascii)
+{-# INLINE readHeader #-}
+readHeader (NI {..}) k
+ = getHeader k <$> readTVar niResponse
+
+readCIHeader ∷ NormalInteraction → CIAscii → STM (Maybe CIAscii)
{-# INLINE readCIHeader #-}
-readCIHeader (Interaction {..}) k
- = getCIHeader k <$> readTVar itrResponse
+readCIHeader (NI {..}) k
+ = getCIHeader k <$> readTVar niResponse
-updateRes ∷ Interaction → (Response → Response) → STM ()
+updateRes ∷ NormalInteraction → (Response → Response) → STM ()
{-# INLINE updateRes #-}
-updateRes (Interaction {..}) f
- = do old ← readTVar itrResponse
- writeTVar itrResponse (f old)
-
-updateResIO ∷ Interaction → (Response → IO Response) → STM ()
-{-# INLINE updateResIO #-}
-updateResIO (Interaction {..}) f
- = do old ← readTVar itrResponse
- new ← unsafeIOToSTM $ f old
- writeTVar itrResponse new
-
-completeUnconditionalHeaders ∷ Config → Response → IO Response
-completeUnconditionalHeaders conf = (compDate =≪) ∘ compServer
- where
- compServer res'
- = case getHeader "Server" res' of
- Nothing → return $ setHeader "Server" (cnfServerSoftware conf) res'
- Just _ → return res'
-
- compDate res'
- = case getHeader "Date" res' of
- Nothing → do date ← getCurrentDate
- return $ setHeader "Date" date res'
- Just _ → return res'
-
-getCurrentDate ∷ IO Ascii
-getCurrentDate = HTTP.toAscii <$> getCurrentTime
+updateRes (NI {..}) f
+ = do old ← readTVar niResponse
+ writeTVar niResponse $ f old
projects / Lucu.git / blobdiff