{-# LANGUAGE
- BangPatterns
+ DoAndIfThenElse
, OverloadedStrings
+ , RecordWildCards
, UnicodeSyntax
#-}
module Network.HTTP.Lucu.Postprocess
)
where
import Control.Applicative
-import Control.Concurrent.STM
-import Control.Monad
+import Control.Concurrent.STM
+import Control.Monad
import Control.Monad.Unicode
import Data.Ascii (Ascii, CIAscii)
import qualified Data.Ascii as A
-import qualified Data.ByteString as Strict (ByteString)
-import qualified Data.ByteString.Char8 as C8 hiding (ByteString)
-import Data.IORef
-import Data.Maybe
-import Data.Time
+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.Headers
-import Network.HTTP.Lucu.HttpVersion
-import Network.HTTP.Lucu.Interaction
-import Network.HTTP.Lucu.Request
-import Network.HTTP.Lucu.Response
+import GHC.Conc (unsafeIOToSTM)
+import Network.HTTP.Lucu.Abortion
+import Network.HTTP.Lucu.Config
+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
-import System.IO.Unsafe
{-
+ TODO: Tanslate this memo into English. It doesn't make sense to
+ non-Japanese speakers.
* Response が未設定なら、200 OK にする。
-}
postprocess ∷ Interaction → STM ()
-postprocess !itr
- = do reqM ← readItr itr itrRequest id
- res ← readItr itr itrResponse id
+postprocess (Interaction {..})
+ = do res ← readTVar itrResponse
let sc = resStatus res
unless (any (\ p → p sc) [isSuccessful, isRedirection, isError])
- $ abortSTM InternalServerError []
- $ Just ("The status code is not good for a final status: "
- ++ show sc)
-
- when (sc ≡ MethodNotAllowed ∧ getHeader (C8.pack "Allow") res ≡ Nothing)
- $ abortSTM InternalServerError []
- $ Just ("The status was " ++ show sc ++ " but no Allow header.")
-
- when (sc /= NotModified ∧ isRedirection sc ∧ getHeader (C8.pack "Location") res ≡ Nothing)
- $ abortSTM InternalServerError []
- $ Just ("The status code was " ++ show sc ++ " but no Location header.")
-
- when (reqM /= Nothing) relyOnRequest
+ $ abortSTM InternalServerError []
+ $ Just
+ $ A.toText
+ $ A.fromAsciiBuilder
+ $ A.toAsciiBuilder "The status code is not good for a final status of a response: "
+ ⊕ printStatusCode sc
+
+ when (sc ≡ MethodNotAllowed ∧ getHeader "Allow" res ≡ Nothing)
+ $ abortSTM InternalServerError []
+ $ Just
+ $ A.toText
+ $ A.fromAsciiBuilder
+ $ A.toAsciiBuilder "The status was "
+ ⊕ printStatusCode sc
+ ⊕ A.toAsciiBuilder " but no Allow header."
+
+ when (sc ≢ NotModified ∧ isRedirection sc ∧ getHeader "Location" res ≡ Nothing)
+ $ abortSTM InternalServerError []
+ $ Just
+ $ A.toText
+ $ A.fromAsciiBuilder
+ $ A.toAsciiBuilder "The status code was "
+ ⊕ printStatusCode sc
+ ⊕ A.toAsciiBuilder " but no Location header."
+
+ case itrRequest of
+ Just req → postprocessWithRequest sc req
+ Nothing → return ()
-- itrResponse の内容は relyOnRequest によって變へられてゐる可
-- 能性が高い。
- do oldRes ← readItr itr itrResponse id
+ do oldRes ← readTVar itrResponse
newRes ← unsafeIOToSTM
- $ completeUnconditionalHeaders (itrConfig itr) oldRes
- writeItr itr itrResponse newRes
+ $ completeUnconditionalHeaders itrConfig oldRes
+ writeTVar itrResponse newRes
where
- relyOnRequest ∷ STM ()
- relyOnRequest
- = do status ← readItr itr itrResponse resStatus
- req ← readItr itr itrRequest fromJust
-
- let reqVer = reqVersion req
- canHaveBody = if reqMethod req ≡ HEAD then
+ postprocessWithRequest ∷ StatusCode → Request → STM ()
+ postprocessWithRequest sc (Request {..})
+ = do let canHaveBody = if reqMethod ≡ HEAD then
False
else
- not (isInformational status ∨
- status ≡ NoContent ∨
- status ≡ ResetContent ∨
- status ≡ NotModified )
+ (¬) (isInformational sc ∨
+ sc ≡ NoContent ∨
+ sc ≡ ResetContent ∨
+ sc ≡ NotModified )
updateRes $ deleteHeader "Content-Length"
updateRes $ deleteHeader "Transfer-Encoding"
$ updateRes $ setHeader "Content-Type" defaultPageContentType
if canHaveBody then
- when (reqVer ≡ HttpVersion 1 1)
- $ do updateRes $ setHeader "Transfer-Encoding" "chunked"
- writeItr itr itrWillChunkBody True
- else
+ when (reqVersion ≡ HttpVersion 1 1)
+ $ do updateRes $ setHeader "Transfer-Encoding" "chunked"
+ writeTVar itrWillChunkBody True
+ else
-- body 関連のヘッダを削除。但し HEAD なら Content-* は殘す
- when (reqMethod req /= HEAD)
- $ do updateRes $ deleteHeader "Content-Type"
- updateRes $ deleteHeader "Etag"
- updateRes $ deleteHeader "Last-Modified"
+ when (reqMethod ≢ HEAD)
+ $ do updateRes $ deleteHeader "Content-Type"
+ updateRes $ deleteHeader "Etag"
+ updateRes $ deleteHeader "Last-Modified"
- conn ← readHeader "Connection"
+ conn ← readCIHeader "Connection"
case conn of
Nothing → return ()
- Just value → when (A.toCIAscii value ≡ "close")
- $ writeItr itr itrWillClose True
+ Just value → when (value ≡ "close")
+ $ writeTVar itrWillClose True
- willClose ← readItr itr itrWillClose id
+ willClose ← readTVar itrWillClose
when willClose
- $ updateRes $ setHeader "Connection" "close"
+ $ updateRes $ setHeader "Connection" "close"
- when (reqMethod req ≡ HEAD ∨ not canHaveBody)
- $ writeTVar (itrWillDiscardBody itr) True
+ when (reqMethod ≡ HEAD ∨ not canHaveBody)
+ $ writeTVar itrWillDiscardBody True
readHeader ∷ CIAscii → STM (Maybe Ascii)
- readHeader = readItr itr itrResponse ∘ getHeader
+ {-# INLINE readHeader #-}
+ readHeader k = getHeader k <$> readTVar itrResponse
+
+ readCIHeader ∷ CIAscii → STM (Maybe CIAscii)
+ {-# INLINE readCIHeader #-}
+ readCIHeader k = getCIHeader k <$> readTVar itrResponse
updateRes ∷ (Response → Response) → STM ()
- updateRes = updateItr itr itrResponse
+ {-# INLINE updateRes #-}
+ updateRes f
+ = do old ← readTVar itrResponse
+ writeTVar itrResponse (f old)
completeUnconditionalHeaders ∷ Config → Response → IO Response
completeUnconditionalHeaders conf = (compDate =≪) ∘ compServer
Just _ → return res'
getCurrentDate ∷ IO Ascii
-getCurrentDate = HTTP.format <$> getCurrentTime
+getCurrentDate = HTTP.toAscii <$> getCurrentTime
projects / Lucu.git / blobdiff