{-# LANGUAGE
- BangPatterns
+ DoAndIfThenElse
+ , OverloadedStrings
+ , RecordWildCards
+ , UnicodeSyntax
#-}
module Network.HTTP.Lucu.Preprocess
( preprocess
)
where
-
-import Control.Concurrent.STM
-import Control.Monad
-import qualified Data.ByteString as Strict (ByteString)
-import qualified Data.ByteString.Char8 as C8 hiding (ByteString)
-import Data.Char
-import Data.Maybe
-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 Network.URI
+import Control.Applicative
+import Control.Concurrent.STM
+import Control.Monad
+import Data.Ascii (Ascii)
+import qualified Data.Ascii as A
+import Data.ByteString (ByteString)
+import qualified Data.ByteString.Char8 as C8
+import Data.Char
+import Data.Maybe
+import Data.Text (Text)
+import qualified Data.Text as T
+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 Network.URI
+import Prelude.Unicode
{-
+ TODO: Tanslate this memo into English. It doesn't make sense to
+ non-Japanese speakers.
* URI にホスト名が存在しない時、
[1] HTTP/1.0 ならば Config を使って補完
Request にする。
* willDiscardBody その他の變數を設定する。
-
-}
-preprocess :: Interaction -> STM ()
-preprocess !itr
- = do req <- readItr itr itrRequest fromJust
+preprocess ∷ Interaction → STM ()
+preprocess itr@(Interaction {..})
+ = do req ← fromJust <$> readTVar itrRequest
let reqVer = reqVersion req
- if reqVer /= HttpVersion 1 0 &&
- reqVer /= HttpVersion 1 1 then
+ if reqVer ≢ HttpVersion 1 0 ∧
+ reqVer ≢ HttpVersion 1 1 then
- do setStatus HttpVersionNotSupported
- writeItr itr itrWillClose True
+ do setStatus itr HttpVersionNotSupported
+ writeTVar itrWillClose True
- else
+ else
-- HTTP/1.0 では Keep-Alive できない
- do when (reqVer == HttpVersion 1 0)
- $ writeItr itr itrWillClose True
+ do when (reqVer ≡ HttpVersion 1 0)
+ $ writeTVar itrWillClose True
-- ホスト部の補完
- completeAuthority req
+ completeAuthority itr req
case reqMethod req of
- GET -> return ()
- HEAD -> writeItr itr itrWillDiscardBody True
- POST -> writeItr itr itrRequestHasBody True
- PUT -> writeItr itr itrRequestHasBody True
- DELETE -> return ()
- _ -> setStatus NotImplemented
+ GET → return ()
+ HEAD → writeTVar itrWillDiscardBody True
+ POST → writeTVar itrRequestHasBody True
+ PUT → writeTVar itrRequestHasBody True
+ DELETE → return ()
+ _ → setStatus itr NotImplemented
- preprocessHeader req
- where
- setStatus :: StatusCode -> STM ()
- setStatus !status
- = updateItr itr itrResponse
- $! \ res -> res {
- resStatus = status
- }
-
- completeAuthority :: Request -> STM ()
- completeAuthority !req
- = when (uriAuthority (reqURI req) == Nothing)
- $ if reqVersion req == HttpVersion 1 0 then
- -- HTTP/1.0 なので Config から補完
- do let conf = itrConfig itr
- host = cnfServerHost conf
- port = itrLocalPort itr
- portStr
- = case port of
- 80 -> ""
- n -> ':' : show n
- updateAuthority host (C8.pack portStr)
- else
- case getHeader (C8.pack "Host") req of
- Just str -> let (host, portStr) = parseHost str
- in updateAuthority host portStr
- Nothing -> setStatus BadRequest
-
-
- parseHost :: Strict.ByteString -> (Strict.ByteString, Strict.ByteString)
- parseHost = C8.break (== ':')
-
-
- updateAuthority :: Strict.ByteString -> Strict.ByteString -> STM ()
- updateAuthority !host !portStr
- = updateItr itr itrRequest
- $! \ (Just req) -> Just req {
- reqURI = let uri = reqURI req
- in uri {
- uriAuthority = Just URIAuth {
- uriUserInfo = ""
- , uriRegName = C8.unpack host
- , uriPort = C8.unpack portStr
- }
- }
- }
-
-
- preprocessHeader :: Request -> STM ()
- preprocessHeader !req
- = do case getHeader (C8.pack "Expect") req of
- Nothing -> return ()
- Just value -> if value `noCaseEq` C8.pack "100-continue" then
- writeItr itr itrExpectedContinue True
- else
- setStatus ExpectationFailed
-
- case getHeader (C8.pack "Transfer-Encoding") req of
- Nothing -> return ()
- Just value -> unless (value `noCaseEq` C8.pack "identity")
- $ if value `noCaseEq` C8.pack "chunked" then
- writeItr itr itrRequestIsChunked True
- else
- setStatus NotImplemented
-
- case getHeader (C8.pack "Content-Length") req of
- Nothing -> return ()
- Just value -> if C8.all isDigit value then
- do let Just (len, _) = C8.readInt value
- writeItr itr itrReqChunkLength $ Just len
- writeItr itr itrReqChunkRemaining $ Just len
- else
- setStatus BadRequest
-
- case getHeader (C8.pack "Connection") req of
- Nothing -> return ()
- Just value -> when (value `noCaseEq` C8.pack "close")
- $ writeItr itr itrWillClose True
+ preprocessHeader itr req
+
+setStatus ∷ Interaction → StatusCode → STM ()
+setStatus (Interaction {..}) sc
+ = do res ← readTVar itrResponse
+ let res' = res {
+ resStatus = sc
+ }
+ writeTVar itrResponse res'
+
+completeAuthority ∷ Interaction → Request → STM ()
+completeAuthority itr@(Interaction {..}) req
+ = when (isNothing $ uriAuthority $ reqURI req)
+ $ if reqVersion req == HttpVersion 1 0 then
+ -- HTTP/1.0 なので Config から補完
+ do let host = cnfServerHost itrConfig
+ portStr = case itrLocalPort of
+ 80 → ""
+ n → ':' : show n
+ updateAuthority host $ A.unsafeFromString portStr
+ else
+ case getHeader "Host" req of
+ Just str → let (host, portStr) = parseHost str
+ in
+ updateAuthority host portStr
+ Nothing → setStatus itr BadRequest
+
+parseHost ∷ Ascii → (Text, Ascii)
+parseHost = C8.break (≡ ':')
+
+updateAuthority ∷ Text → Ascii → STM ()
+updateAuthority host portStr
+ = do Just req ← readTVar itrRequest
+ let uri = reqURI req
+ uri' = uri {
+ uriAuthority = Just URIAuth {
+ uriUserInfo = ""
+ , uriRegName = T.unpack host
+ , uriPort = A.toString portStr
+ }
+ }
+ req' = req { reqURI = uri' }
+ writeTVar itrRequest $ Just req'
+
+preprocessHeader ∷ Interaction → Request → STM ()
+preprocessHeader (Interaction {..}) req
+ = do case getCIHeader "Expect" req of
+ Nothing → return ()
+ Just value → if value ≡ "100-continue" then
+ writeTVar itrExpectedContinue True
+ else
+ setStatus ExpectationFailed
+
+ case getCIHeader "Transfer-Encoding" req of
+ Nothing → return ()
+ Just value → unless (value ≡ "identity")
+ $ if value ≡ "chunked" then
+ writeTVar itrRequestIsChunked True
+ else
+ setStatus NotImplemented
+
+ case getHeader "Content-Length" req of
+ Nothing → return ()
+ Just value → if C8.all isDigit value then
+ do let Just (len, _) = C8.readInt value
+ writeTVar itrReqChunkLength $ Just len
+ writeTVar itrReqChunkRemaining $ Just len
+ else
+ setStatus BadRequest
+
+ case getCIHeader "Connection" req of
+ Nothing → return ()
+ Just value → when (value ≡ "close")
+ $ writeTVar itrWillClose True
projects / Lucu.git / blobdiff