+{-# LANGUAGE
+ BangPatterns
+ , UnboxedTuples
+ , UnicodeSyntax
+ #-}
module Network.HTTP.Lucu.RequestReader
- ( requestReader -- Config -> ResTree -> Handle -> HostName -> InteractionQueue -> IO ()
+ ( requestReader
)
where
import Control.Monad
import qualified Data.ByteString.Lazy.Char8 as B
import Data.ByteString.Lazy.Char8 (ByteString)
-import Data.Map as M
-import Data.Map (Map)
import Data.Maybe
import qualified Data.Sequence as S
-import Data.Sequence (Seq, (<|), ViewR(..))
-import Network
+import Data.Sequence ((<|))
+import GHC.Conc (unsafeIOToSTM)
+import Network.Socket
import Network.HTTP.Lucu.Config
+import Network.HTTP.Lucu.Chunk
import Network.HTTP.Lucu.DefaultPage
-import Network.HTTP.Lucu.HttpVersion
+import Network.HTTP.Lucu.HandleLike
import Network.HTTP.Lucu.Interaction
import Network.HTTP.Lucu.Parser
import Network.HTTP.Lucu.Postprocess
import Network.HTTP.Lucu.Preprocess
import Network.HTTP.Lucu.Request
import Network.HTTP.Lucu.Response
-import Network.HTTP.Lucu.Resource
+import Network.HTTP.Lucu.Resource.Tree
import Prelude hiding (catch)
-import System.IO
-
-import GHC.Conc (unsafeIOToSTM)
-
-requestReader :: Config -> ResTree -> Handle -> HostName -> InteractionQueue -> IO ()
-requestReader cnf tree h host tQueue
- = do catch (acceptRequest B.empty) $ \ exc ->
- case exc of
- IOException _ -> return ()
- AsyncException ThreadKilled -> return ()
- BlockedIndefinitely -> putStrLn "requestReader: blocked indefinitely"
- _ -> print exc
+import System.IO (stderr)
+
+requestReader :: HandleLike h => Config -> ResTree -> [FallbackHandler] -> h -> PortNumber -> SockAddr -> InteractionQueue -> IO ()
+requestReader !cnf !tree !fbs !h !port !addr !tQueue
+ = do input <- hGetLBS h
+ acceptRequest input
+ `catches`
+ [ Handler (( \ _ -> return () ) :: IOException -> IO ())
+ , Handler ( \ ThreadKilled -> return () )
+ , Handler ( \ BlockedIndefinitelyOnSTM -> hPutStrLn stderr "requestReader: blocked indefinitely" )
+ , Handler (( \ e -> hPutStrLn stderr (show e) ) :: SomeException -> IO ())
+ ]
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
+ = {-# SCC "acceptRequest" #-}
+ do atomically $ do queue <- readTVar tQueue
when (S.length queue >= cnfMaxPipelineDepth cnf)
retry
-- 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 BadRequest
- (ReachedEOF , _ ) -> if B.length input >= 1024 * 1024 then
- -- ヘッダ長過ぎ
- acceptNonparsableRequest RequestEntityTooLarge
- else
- acceptRequest input
+ (# Success req , input' #) -> acceptParsableRequest req input'
+ (# 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 = status
- , resHeaders = []
- }
- atomically $ do writeItr itr itrResponse $ Just res
+ = {-# SCC "acceptNonparsableRequest" #-}
+ do itr <- newInteraction cnf port addr Nothing Nothing
+ atomically $ do updateItr itr itrResponse
+ $ \ res -> res {
+ resStatus = status
+ }
writeItr itr itrWillClose True
writeItr itr itrState Done
writeDefaultPage itr
enqueue itr
acceptParsableRequest :: Request -> ByteString -> IO ()
- acceptParsableRequest req soFar
- = do itr <- newInteraction cnf host (Just req)
+ acceptParsableRequest req input
+ = {-# SCC "acceptParsableRequest" #-}
+ do cert <- hGetPeerCert h
+ itr <- newInteraction cnf port addr cert (Just req)
action
<- atomically $
do preprocess itr
- isErr <- readItrF itr itrResponse (isError . resStatus)
- if isErr == Just True then
- acceptSemanticallyInvalidRequest itr soFar
+ isErr <- readItr itr itrResponse (isError . resStatus)
+ if isErr then
+ acceptSemanticallyInvalidRequest itr input
else
- case findResource tree $ (reqURI . fromJust . itrRequest) itr of
- Nothing -- Resource が無かった
- -> acceptRequestForNonexistentResource itr soFar
+ do rsrcM <- unsafeIOToSTM $ findResource tree fbs $ reqURI req
+ case rsrcM of
+ Nothing -- Resource が無かった
+ -> acceptRequestForNonexistentResource itr input
- Just rsrcDef -- あった
- -> acceptRequestForExistentResource itr soFar rsrcDef
+ Just (rsrcPath, rsrcDef) -- あった
+ -> acceptRequestForExistentResource itr input rsrcPath rsrcDef
action
acceptSemanticallyInvalidRequest :: Interaction -> ByteString -> STM (IO ())
- acceptSemanticallyInvalidRequest itr soFar
- = do writeItr itr itrState Done
+ acceptSemanticallyInvalidRequest itr input
+ = {-# SCC "acceptSemanticallyInvalidRequest" #-}
+ 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
- = do let res = Response {
- resVersion = HttpVersion 1 1
- , resStatus = NotFound
- , resHeaders = []
- }
- writeItr itr itrResponse $ Just res
+ acceptRequestForNonexistentResource itr input
+ = {-# SCC "acceptRequestForNonexistentResource" #-}
+ do updateItr itr itrResponse
+ $ \res -> res {
+ resStatus = NotFound
+ }
writeItr itr itrState Done
writeDefaultPage itr
postprocess itr
enqueue itr
- return $ acceptRequest soFar
-
- acceptRequestForExistentResource :: Interaction -> ByteString -> ResourceDef -> STM (IO ())
- acceptRequestForExistentResource itr soFar rsrcDef
- = do requestHasBody <- readItr itr itrRequestHasBody id
- writeItr itr itrState (if requestHasBody
- then ExaminingHeader
- else DecidingHeader)
+ return $ acceptRequest input
+
+ acceptRequestForExistentResource :: Interaction -> ByteString -> [String] -> ResourceDef -> STM (IO ())
+ acceptRequestForExistentResource oldItr input rsrcPath rsrcDef
+ = {-# SCC "acceptRequestForExistentResource" #-}
+ do let itr = oldItr { itrResourcePath = Just rsrcPath }
+ requestHasBody <- readItr itr itrRequestHasBody id
enqueue itr
- return $ do runResource rsrcDef 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
- = do isChunked <- atomically $ readItr itr itrRequestIsChunked id
+ observeRequest itr input
+ = {-# SCC "observeRequest" #-}
+ do isChunked <- atomically $ readItr itr itrRequestIsChunked id
if isChunked then
- observeChunkedRequest itr soFar
+ observeChunkedRequest itr input
else
- observeNonChunkedRequest itr soFar
+ observeNonChunkedRequest itr input
observeChunkedRequest :: Interaction -> ByteString -> IO ()
- observeChunkedRequest itr soFar
- = fail "FIXME: not implemented"
+ observeChunkedRequest itr input
+ = {-# SCC "observeChunkedRequest" #-}
+ do action
+ <- atomically $
+ do isOver <- readItr itr itrReqChunkIsOver id
+ if isOver then
+ return $ acceptRequest input
+ else
+ 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
+ if fmap (> 0) remainingM == Just True then
+ -- 現在のチャンクをまだ
+ -- 讀み終へてゐない
+ do let (_, input') = B.splitAt (fromIntegral
+ $ fromJust remainingM) input
+ (# footerR, input'' #) = parse chunkFooterP input'
+
+ if footerR == Success () then
+ -- チャンクフッタを正常に讀めた
+ do writeItr itr itrReqChunkRemaining $ Just 0
+
+ return $ observeChunkedRequest itr input''
+ else
+ return $ chunkWasMalformed itr
+ else
+ -- 次のチャンクを讀み始める
+ seekNextChunk itr input
+ else
+ -- 要求がまだ來ない
+ retry
+ else
+ -- 受信要求が來た
+ do remainingM <- readItr itr itrReqChunkRemaining id
+ if fmap (> 0) remainingM == Just True then
+ -- 現在のチャンクをまだ讀み
+ -- 終へてゐない
+ do let wanted = fromJust wantedM
+ remaining = fromJust remainingM
+ bytesToRead = fromIntegral $ min wanted remaining
+ (chunk, input') = B.splitAt bytesToRead input
+ actualReadBytes = fromIntegral $ B.length chunk
+ newWanted = case wanted - actualReadBytes of
+ 0 -> Nothing
+ n -> Just n
+ newRemaining = Just $ remaining - actualReadBytes
+ updateStates
+ = do writeItr itr itrReqChunkRemaining newRemaining
+ writeItr itr itrReqBodyWanted newWanted
+ updateItr itr itrReceivedBody $ flip B.append chunk
+
+ if newRemaining == Just 0 then
+ -- チャンクフッタを讀む
+ case parse chunkFooterP input' of
+ (# Success _, input'' #)
+ -> do updateStates
+ return $ observeChunkedRequest itr input''
+ (# _, _ #)
+ -> return $ chunkWasMalformed itr
+ else
+ -- まだチャンクの終はりに達してゐない
+ do updateStates
+ return $ observeChunkedRequest itr input'
+ else
+ -- 次のチャンクを讀み始める
+ seekNextChunk itr input
+ action
+
+ seekNextChunk :: Interaction -> ByteString -> STM (IO ())
+ seekNextChunk itr input
+ = {-# SCC "seekNextChunk" #-}
+ case parse chunkHeaderP input of
+ -- 最終チャンク (中身が空)
+ (# Success 0, input' #)
+ -> case parse chunkTrailerP input' of
+ (# Success _, input'' #)
+ -> do writeItr itr itrReqChunkLength $ Nothing
+ writeItr itr itrReqChunkRemaining $ Nothing
+ writeItr itr itrReqChunkIsOver True
+
+ return $ acceptRequest input''
+ (# _, _ #)
+ -> return $ chunkWasMalformed itr
+ -- 最終でないチャンク
+ (# Success len, input' #)
+ -> do writeItr itr itrReqChunkLength $ Just len
+ writeItr itr itrReqChunkRemaining $ Just len
+
+ return $ observeChunkedRequest itr input'
+ -- チャンクヘッダがをかしい
+ (# _, _ #)
+ -> return $ chunkWasMalformed itr
+
+ chunkWasMalformed :: Interaction -> IO ()
+ chunkWasMalformed itr
+ = {-# SCC "chunkWasMalformed" #-}
+ atomically $ do updateItr itr itrResponse
+ $ \ res -> res {
+ resStatus = BadRequest
+ }
+ writeItr itr itrWillClose True
+ writeItr itr itrState Done
+ writeDefaultPage itr
+ postprocess itr
observeNonChunkedRequest :: Interaction -> ByteString -> IO ()
- observeNonChunkedRequest itr soFar
- = fail "FIXME: not implemented"
-{-
- = do action
+ observeNonChunkedRequest itr input
+ = {-# SCC "observeNonChunkedRequest" #-}
+ do action
<- atomically $
do wantedM <- readItr itr itrReqBodyWanted id
if wantedM == Nothing then
do wasteAll <- readItr itr itrReqBodyWasteAll id
if wasteAll then
- return $ wasteAllReqBody itr soFar
+ -- 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
+
+ return $ acceptRequest input'
else
+ -- 要求がまだ来ない
retry
else
- -- 受信要求が來た。
- if B.empty soFar then
- return $ receiveNonChunkedReqBody itr
- else
- do remaining <- readItr itr itrReqChunkRemaining fromJust
-
- let wanted = fromJust wanted
- (chunk, input') = B.splitAt (min wanted remaining) soFar
- newRemaining = remaining - B.length chunk
- isOver = newRemaining == 0
-
- writeItr itr itrReqChunkRemaining newRemaining
- writeItr itr itrReqChunkIsOver isOver
- writeItr itr itrReqBodyWanted (if isOver then
- Nothing
- else
- Just wanted)
- writeItr itr itrReceivedBody chunk
-
- if isOver then
- return $ acceptRequest input'
- else
- return $ observeNonChunkedRequest itr input'
- action
+ -- 受信要求が來た
+ do remainingM <- readItr itr itrReqChunkRemaining id
- receiveNonChunkedReqBody :: Interaction -> IO ()
- receiveNonChunkedReqBody itr
- = do wanted <- atomically $ readItr itr itrReqBodyWanted fromJust
- remaining <- atomically $ readItr itr itrReqChunkRemaining fromJust
-
- hWaitForInput h (-1)
- chunk <- B.hGetNonBlocking h (min wanted remaining)
-
- let newRemaining = remaining - B.length chunk
- isOver = newRemaining == 0
-
- atomically $ do writeItr itr itrReqChunkRemaining newRemaining
- writeItr itr itrReqChunkIsOver isOver
- writeItr itr itrReqBodyWanted (if isOver then
- Nothing
- else
- Just wanted)
- writeItr itr itrReceivedBody chunk
-
- if isOver then
- return $ acceptRequest B.empty
- else
- return $ observeNonChunkedRequest itr B.empty
+ let wanted = fromJust wantedM
+ bytesToRead = fromIntegral $ maybe wanted (min wanted) remainingM
+ (chunk, input') = B.splitAt bytesToRead input
+ newRemaining = fmap
+ (\ x -> x - (fromIntegral $ B.length chunk))
+ remainingM
+ isOver = B.length chunk < bytesToRead || newRemaining == Just 0
+ writeItr itr itrReqChunkRemaining newRemaining
+ writeItr itr itrReqChunkIsOver isOver
+ writeItr itr itrReqBodyWanted Nothing
+ writeItr itr itrReceivedBody chunk
- wasteAllReqBody :: Interaction -> ByteString -> IO ()
- wasteAllReqBody itr soFar
- =
-
--}
+ if isOver then
+ return $ acceptRequest input'
+ else
+ return $ observeNonChunkedRequest itr input'
+ action
enqueue :: Interaction -> STM ()
- enqueue itr = do queue <- readTVar tQueue
+ enqueue itr = {-# SCC "enqueue" #-}
+ do queue <- readTVar tQueue
writeTVar tQueue (itr <| queue)
\ No newline at end of file
projects / Lucu.git / blobdiff