X-Git-Url: http://git.cielonegro.org/gitweb.cgi?a=blobdiff_plain;f=Network%2FHTTP%2FLucu%2FRequestReader.hs;h=e3032ce583ea8afdae6c0802462ac283dcea2dbb;hb=2d25d34513dc4f6bf62e53e2af2f4a4ef39cc6dc;hp=567b98b6961c75206994a8eb94c4e036e71c9a94;hpb=1e48e402adec79653203dc19a1800efa7b1c467b;p=Lucu.git diff --git a/Network/HTTP/Lucu/RequestReader.hs b/Network/HTTP/Lucu/RequestReader.hs index 567b98b..e3032ce 100644 --- a/Network/HTTP/Lucu/RequestReader.hs +++ b/Network/HTTP/Lucu/RequestReader.hs @@ -31,7 +31,8 @@ import GHC.Conc (unsafeIOToSTM) requestReader :: Config -> ResTree -> Handle -> HostName -> InteractionQueue -> IO () requestReader cnf tree h host tQueue - = do catch (acceptRequest B.empty) $ \ exc -> + = do catch (do input <- B.hGetContents h + acceptRequest input) $ \ exc -> case exc of IOException _ -> return () AsyncException ThreadKilled -> return () @@ -39,7 +40,7 @@ requestReader cnf tree h host tQueue _ -> print exc where acceptRequest :: ByteString -> IO () - acceptRequest soFar + acceptRequest input -- キューに最大パイプライン深度以上のリクエストが溜まってゐる -- 時は、それが限度以下になるまで待つ。 = do atomically $ do queue <- readTVar tQueue @@ -49,27 +50,19 @@ requestReader cnf tree h host tQueue -- リクエストを讀む。パースできない場合は直ちに 400 Bad -- Request 應答を設定し、それを出力してから切斷するやう -- に ResponseWriter に通知する。 - hWaitForInput h (-1) - chunk <- B.hGetNonBlocking h 1024 - - let input = B.append soFar chunk case parse requestP input of (Success req , input') -> acceptParsableRequest req input' - (IllegalInput, _ ) -> acceptNonparsableRequest - (ReachedEOF , _ ) -> if B.length input >= 1024 * 1024 then - -- ヘッダ長過ぎ - acceptNonparsableRequest - else - acceptRequest input - - - acceptNonparsableRequest :: IO () - acceptNonparsableRequest - = do itr <- newInteraction host Nothing + (IllegalInput, _ ) -> acceptNonparsableRequest BadRequest + (ReachedEOF , _ ) -> acceptNonparsableRequest BadRequest + + acceptNonparsableRequest :: StatusCode -> IO () + acceptNonparsableRequest status + = do itr <- newInteraction cnf host Nothing let res = Response { resVersion = HttpVersion 1 1 - , resStatus = BadRequest + , resStatus = status , resHeaders = [] + } atomically $ do writeItr itr itrResponse $ Just res writeItr itr itrWillClose True @@ -79,33 +72,33 @@ requestReader cnf tree h host tQueue enqueue itr acceptParsableRequest :: Request -> ByteString -> IO () - acceptParsableRequest req soFar - = do itr <- newInteraction host (Just req) + acceptParsableRequest req input + = do itr <- newInteraction cnf host (Just req) action <- atomically $ do preprocess itr isErr <- readItrF itr itrResponse (isError . resStatus) if isErr == Just True then - acceptSemanticallyInvalidRequest itr soFar + acceptSemanticallyInvalidRequest itr input else case findResource tree $ (reqURI . fromJust . itrRequest) itr of Nothing -- Resource が無かった - -> acceptRequestForNonexistentResource itr soFar + -> acceptRequestForNonexistentResource itr input Just rsrcDef -- あった - -> acceptRequestForExistentResource itr soFar rsrcDef + -> acceptRequestForExistentResource itr input rsrcDef action acceptSemanticallyInvalidRequest :: Interaction -> ByteString -> STM (IO ()) - acceptSemanticallyInvalidRequest itr soFar + acceptSemanticallyInvalidRequest itr input = do writeItr itr itrState Done writeDefaultPage itr postprocess itr enqueue itr - return $ acceptRequest soFar + return $ acceptRequest input acceptRequestForNonexistentResource :: Interaction -> ByteString -> STM (IO ()) - acceptRequestForNonexistentResource itr soFar + acceptRequestForNonexistentResource itr input = do let res = Response { resVersion = HttpVersion 1 1 , resStatus = NotFound @@ -116,10 +109,10 @@ requestReader cnf tree h host tQueue writeDefaultPage itr postprocess itr enqueue itr - return $ acceptRequest soFar + return $ acceptRequest input acceptRequestForExistentResource :: Interaction -> ByteString -> ResourceDef -> STM (IO ()) - acceptRequestForExistentResource itr soFar rsrcDef + acceptRequestForExistentResource itr input rsrcDef = do requestHasBody <- readItr itr itrRequestHasBody id writeItr itr itrState (if requestHasBody then ExaminingHeader @@ -127,12 +120,69 @@ requestReader cnf tree h host tQueue enqueue itr return $ do runResource rsrcDef itr if requestHasBody then - observeRequest itr soFar + observeRequest itr input else - acceptRequest soFar + acceptRequest input observeRequest :: Interaction -> ByteString -> IO () - observeRequest itr soFar = fail "FIXME: Not Implemented" + observeRequest itr input + = do isChunked <- atomically $ readItr itr itrRequestIsChunked id + if isChunked then + observeChunkedRequest itr input + else + observeNonChunkedRequest itr input + + observeChunkedRequest :: Interaction -> ByteString -> IO () + observeChunkedRequest itr input + = fail "FIXME: not implemented" + + observeNonChunkedRequest :: Interaction -> ByteString -> IO () + observeNonChunkedRequest itr input + = do action + <- atomically $ + do wantedM <- readItr itr itrReqBodyWanted id + if wantedM == Nothing then + do wasteAll <- readItr itr itrReqBodyWasteAll id + if wasteAll then + -- 破棄要求が來た + do remainingM <- readItr itr itrReqChunkRemaining id + + let (_, input') = if remainingM == Nothing then + (B.takeWhile (\ _ -> True) input, B.empty) + else + B.splitAt (fromIntegral $ fromJust remainingM) input + + writeItr itr itrReqChunkRemaining $ Just 0 + writeItr itr itrReqChunkIsOver True + writeItr itr itrReqBodyWanted Nothing + writeItr itr itrReceivedBody B.empty + + return $ acceptRequest input' + else + -- 要求がまだ来ない + retry + else + -- 受信要求が來た + do remainingM <- readItr itr itrReqChunkRemaining id + + let wanted = fromJust wantedM + expectedChunkLen = fromIntegral $ maybe wanted (min wanted) remainingM + (chunk, input') = B.splitAt expectedChunkLen input + newRemaining = fmap + (\ x -> x - (fromIntegral $ B.length chunk)) + remainingM + isOver = B.length chunk < expectedChunkLen + + writeItr itr itrReqChunkRemaining newRemaining + writeItr itr itrReqChunkIsOver isOver + writeItr itr itrReqBodyWanted Nothing + writeItr itr itrReceivedBody chunk + + if isOver then + return $ acceptRequest input' + else + return $ observeNonChunkedRequest itr input' + action enqueue :: Interaction -> STM () enqueue itr = do queue <- readTVar tQueue