--- #prune
+{-# OPTIONS_HADDOCK prune #-}
-- |This is the Resource Monad; monadic actions to define the behavior
-- of each resources. The 'Resource' Monad is a kind of 'Prelude.IO'
module Network.HTTP.Lucu.Resource
(
- -- * Monad
- Resource
+ -- * Types
+ Resource
+ , FormData(..)
, runRes -- private
-- * Actions
, getConfig
, getRemoteAddr
, getRemoteAddr'
+ , getRemoteHost
+ , getRemoteCertificate
, getRequest
, getMethod
, getRequestURI
, getAcceptEncoding
, isEncodingAcceptable
, getContentType
+ , getAuthorization
-- ** Finding an entity
, setContentType
, setLocation
, setContentEncoding
+ , setWWWAuthenticate
-- ** Writing a response body
import Control.Concurrent.STM
import Control.Monad.Reader
-import Data.Bits
-import Data.ByteString.Base (ByteString, LazyByteString(..))
-import qualified Data.ByteString.Char8 as C8
-import qualified Data.ByteString.Lazy.Char8 as L8
+import qualified Data.ByteString as Strict (ByteString)
+import qualified Data.ByteString.Lazy as Lazy (ByteString)
+import qualified Data.ByteString.Char8 as C8 hiding (ByteString)
+import qualified Data.ByteString.Lazy.Char8 as L8 hiding (ByteString)
import Data.Char
import Data.List
import Data.Maybe
+import Data.Time
+import qualified Data.Time.HTTP as HTTP
import Network.HTTP.Lucu.Abortion
+import Network.HTTP.Lucu.Authorization
import Network.HTTP.Lucu.Config
import Network.HTTP.Lucu.ContentCoding
import Network.HTTP.Lucu.DefaultPage
import Network.HTTP.Lucu.MultipartForm
import Network.HTTP.Lucu.Parser
import Network.HTTP.Lucu.Postprocess
-import Network.HTTP.Lucu.RFC1123DateTime
import Network.HTTP.Lucu.Request
import Network.HTTP.Lucu.Response
import Network.HTTP.Lucu.MIMEType
import Network.HTTP.Lucu.Utils
-import Network.Socket
-import Network.URI
-import System.Time
+import Network.Socket hiding (accept)
+import Network.URI hiding (path)
+import OpenSSL.X509
-- |The 'Resource' monad. This monad implements
-- 'Control.Monad.Trans.MonadIO' so it can do any 'Prelude.IO'
-- you want a 'Network.Socket.SockAddr' instead of 'Prelude.String',
-- use 'getRemoteAddr'.
getRemoteAddr' :: Resource String
-getRemoteAddr' = do addr <- getRemoteAddr
- case addr of
- -- Network.Socket は IPv6 を考慮してゐないやうだ…
- (SockAddrInet _ v4addr)
- -> let b1 = (v4addr `shiftR` 24) .&. 0xFF
- b2 = (v4addr `shiftR` 16) .&. 0xFF
- b3 = (v4addr `shiftR` 8) .&. 0xFF
- b4 = v4addr .&. 0xFF
- in
- return $ concat $ intersperse "." $ map show [b1, b2, b3, b4]
- (SockAddrUnix path)
- -> return path
+getRemoteAddr' = do addr <- getRemoteAddr
+ (Just str, _) <- liftIO $! getNameInfo [NI_NUMERICHOST] True False addr
+ return str
+-- |Resolve an address to the remote host.
+getRemoteHost :: Resource String
+getRemoteHost = do addr <- getRemoteAddr
+ (Just str, _) <- liftIO $! getNameInfo [] True False addr
+ return str
+
+-- | Return the X.509 certificate of the client, or 'Nothing' if:
+--
+-- * This request didn't came through an SSL stream.
+--
+-- * The client didn't send us its certificate.
+--
+-- * The 'OpenSSL.Session.VerificationMode' of
+-- 'OpenSSL.Session.SSLContext' in
+-- 'Network.HTTP.Lucu.Config.SSLConfig' has not been set to
+-- 'OpenSSL.Session.VerifyPeer'.
+getRemoteCertificate :: Resource (Maybe X509)
+getRemoteCertificate = do itr <- getInteraction
+ return $! itrRemoteCert itr
-- |Get the 'Network.HTTP.Lucu.Request.Request' value which represents
-- the request header. In general you don't have to use this action.
return $! fromJust $! itrResourcePath itr
--- |This is an analogy of CGI PATH_INFO. Its result is always @[]@ if
--- the 'Network.HTTP.Lucu.Resource.Tree.ResourceDef' is not
--- greedy. See 'getResourcePath'.
+-- |This is an analogy of CGI PATH_INFO. The result is
+-- URI-unescaped. It is always @[]@ if the
+-- 'Network.HTTP.Lucu.Resource.Tree.ResourceDef' is not greedy. See
+-- 'getResourcePath'.
getPathInfo :: Resource [String]
getPathInfo = do rsrcPath <- getResourcePath
- reqURI <- getRequestURI
- let reqPathStr = uriPath reqURI
- reqPath = [x | x <- splitBy (== '/') reqPathStr, x /= ""]
+ uri <- getRequestURI
+ let reqPathStr = uriPath uri
+ reqPath = [unEscapeString x | x <- splitBy (== '/') reqPathStr, x /= ""]
-- rsrcPath と reqPath の共通する先頭部分を reqPath か
-- ら全部取り除くと、それは PATH_INFO のやうなものにな
-- る。rsrcPath は全部一致してゐるに決まってゐる（でな
-- rsrcPath の長さの分だけ削除すれば良い。
return $! drop (length rsrcPath) reqPath
--- | Assume the query part of request URI as
--- application\/x-www-form-urlencoded, and parse it. This action
--- doesn't parse the request body. See 'inputForm'.
-getQueryForm :: Resource [(String, String)]
-getQueryForm = do reqURI <- getRequestURI
- return $! parseWWWFormURLEncoded $ uriQuery reqURI
+-- |Assume the query part of request URI as
+-- application\/x-www-form-urlencoded, and parse it to pairs of
+-- @(name, formData)@. This action doesn't parse the request body. See
+-- 'inputForm'.
+getQueryForm :: Resource [(String, FormData)]
+getQueryForm = liftM parse' getRequestURI
+ where
+ parse' = map toPairWithFormData .
+ parseWWWFormURLEncoded .
+ snd .
+ splitAt 1 .
+ uriQuery
+
+toPairWithFormData :: (String, String) -> (String, FormData)
+toPairWithFormData (name, value)
+ = let fd = FormData {
+ fdFileName = Nothing
+ , fdContent = L8.pack value
+ }
+ in (name, fd)
-- |Get a value of given request header. Comparison of header name is
-- case-insensitive. Note that this action is not intended to be used
-- so frequently: there should be actions like 'getContentType' for
-- every common headers.
-getHeader :: ByteString -> Resource (Maybe ByteString)
+getHeader :: Strict.ByteString -> Resource (Maybe Strict.ByteString)
getHeader name = name `seq`
do req <- getRequest
return $! H.getHeader name req
Nothing
-> return []
Just accept
- -> case parse mimeTypeListP (LPS [accept]) of
+ -> case parse mimeTypeListP (L8.fromChunks [accept]) of
(# Success xs, _ #) -> return xs
(# _ , _ #) -> abort BadRequest []
(Just $ "Unparsable Accept: " ++ C8.unpack accept)
case ver of
HttpVersion 1 0 -> return [("identity", Nothing)]
HttpVersion 1 1 -> return [("*" , Nothing)]
+ _ -> undefined
Just value
-> if C8.null value then
-- identity のみが許される。
return [("identity", Nothing)]
else
- case parse acceptEncodingListP (LPS [value]) of
+ case parse acceptEncodingListP (L8.fromChunks [value]) of
(# Success x, _ #) -> return $ reverse $ sortBy orderAcceptEncodings x
(# _ , _ #) -> abort BadRequest []
(Just $ "Unparsable Accept-Encoding: " ++ C8.unpack value)
Nothing
-> return Nothing
Just cType
- -> case parse mimeTypeP (LPS [cType]) of
+ -> case parse mimeTypeP (L8.fromChunks [cType]) of
(# Success t, _ #) -> return $ Just t
(# _ , _ #) -> abort BadRequest []
(Just $ "Unparsable Content-Type: " ++ C8.unpack cType)
+-- |Get the header \"Authorization\" as
+-- 'Network.HTTP.Lucu.Authorization.AuthCredential'.
+getAuthorization :: Resource (Maybe AuthCredential)
+getAuthorization
+ = do authM <- getHeader (C8.pack "Authorization")
+ case authM of
+ Nothing
+ -> return Nothing
+ Just auth
+ -> case parse authCredentialP (L8.fromChunks [auth]) of
+ (# Success a, _ #) -> return $ Just a
+ (# _ , _ #) -> return Nothing
+
+
{- ExaminingRequest 時に使用するアクション群 -}
-- |Tell the system that the 'Resource' found an entity for the
-- request URI. If this is a GET or HEAD request, a found entity means
-- a datum to be replied. If this is a PUT or DELETE request, it means
--- a datum which was stored for the URI up to now. It is an error to
+-- a datum which was stored for the URI until now. It is an error to
-- compute 'foundEntity' if this is a POST request.
--
-- Computation of 'foundEntity' performs \"If-Match\" test or
--
-- If this is a GET or HEAD request, 'foundEntity' automatically puts
-- \"ETag\" and \"Last-Modified\" headers into the response.
-foundEntity :: ETag -> ClockTime -> Resource ()
+foundEntity :: ETag -> UTCTime -> Resource ()
foundEntity tag timeStamp
= tag `seq` timeStamp `seq`
do driftTo ExaminingRequest
method <- getMethod
when (method == GET || method == HEAD)
- $ setHeader' (C8.pack "Last-Modified") (C8.pack $ formatHTTPDateTime timeStamp)
+ $ setHeader' (C8.pack "Last-Modified") (C8.pack $ HTTP.format timeStamp)
when (method == POST)
$ abort InternalServerError []
- (Just "Illegal computation of foundEntity for POST request.")
+ (Just "Illegal computation of foundEntity for a POST request.")
foundETag tag
driftTo GettingBody
Just value -> if value == C8.pack "*" then
return ()
else
- case parse eTagListP (LPS [value]) of
+ case parse eTagListP (L8.fromChunks [value]) of
(# Success tags, _ #)
-- tags の中に一致するものが無ければ
-- PreconditionFailed で終了。
Just value -> if value == C8.pack "*" then
abort statusForNoneMatch [] $! Just ("The entity tag matches: *")
else
- case parse eTagListP (LPS [value]) of
+ case parse eTagListP (L8.fromChunks [value]) of
(# Success tags, _ #)
-> when (any (== tag) tags)
$ abort statusForNoneMatch [] $! Just ("The entity tag matches: " ++ C8.unpack value)
--
-- This action is not preferred. You should use 'foundEntity' whenever
-- possible.
-foundTimeStamp :: ClockTime -> Resource ()
+foundTimeStamp :: UTCTime -> Resource ()
foundTimeStamp timeStamp
= timeStamp `seq`
do driftTo ExaminingRequest
method <- getMethod
when (method == GET || method == HEAD)
- $ setHeader' (C8.pack "Last-Modified") (C8.pack $ formatHTTPDateTime timeStamp)
+ $ setHeader' (C8.pack "Last-Modified") (C8.pack $ HTTP.format timeStamp)
when (method == POST)
$ abort InternalServerError []
(Just "Illegal computation of foundTimeStamp for POST request.")
-- If-Modified-Since があればそれを見る。
ifModSince <- getHeader (C8.pack "If-Modified-Since")
case ifModSince of
- Just str -> case parseHTTPDateTime (LPS [str]) of
+ Just str -> case HTTP.parse (C8.unpack str) of
Just lastTime
-> when (timeStamp <= lastTime)
$ abort statusForIfModSince []
-- If-Unmodified-Since があればそれを見る。
ifUnmodSince <- getHeader (C8.pack "If-Unmodified-Since")
case ifUnmodSince of
- Just str -> case parseHTTPDateTime (LPS [str]) of
+ Just str -> case HTTP.parse (C8.unpack str) of
Just lastTime
-> when (timeStamp > lastTime)
$ abort PreconditionFailed []
-- | This is mostly the same as 'input' but is more
--- efficient. 'inputLBS' returns a
--- 'Data.ByteString.Base.LazyByteString' but it's not really lazy:
--- reading from the socket just happens at the computation of
--- 'inputLBS', not at the evaluation of the
--- 'Data.ByteString.Base.LazyByteString'. The same goes for
+-- efficient. 'inputLBS' returns a 'Data.ByteString.Lazy.ByteString'
+-- but it's not really lazy: reading from the socket just happens at
+-- the computation of 'inputLBS', not at the evaluation of the
+-- 'Data.ByteString.Lazy.ByteString'. The same goes for
-- 'inputChunkLBS'.
-inputLBS :: Int -> Resource LazyByteString
+inputLBS :: Int -> Resource Lazy.ByteString
inputLBS limit
= limit `seq`
do driftTo GettingBody
return L8.empty
return chunk
where
- askForInput :: Interaction -> Resource LazyByteString
+ askForInput :: Interaction -> Resource Lazy.ByteString
askForInput itr
= itr `seq`
- do let defaultLimit = cnfMaxEntityLength $ itrConfig itr
- actualLimit = if limit <= 0 then
- defaultLimit
- else
- limit
+ do let confLimit = cnfMaxEntityLength $ itrConfig itr
+ actualLimit = if limit <= 0 then
+ confLimit
+ else
+ limit
when (actualLimit <= 0)
$ fail ("inputLBS: limit must be positive: " ++ show actualLimit)
-- Reader にリクエスト
-- | This is mostly the same as 'inputChunk' but is more
-- efficient. See 'inputLBS'.
-inputChunkLBS :: Int -> Resource LazyByteString
+inputChunkLBS :: Int -> Resource Lazy.ByteString
inputChunkLBS limit
= limit `seq`
do driftTo GettingBody
return L8.empty
return chunk
where
- askForInput :: Interaction -> Resource LazyByteString
+ askForInput :: Interaction -> Resource Lazy.ByteString
askForInput itr
= itr `seq`
- do let defaultLimit = cnfMaxEntityLength $! itrConfig itr
- actualLimit = if limit < 0 then
- defaultLimit
+ do let confLimit = cnfMaxEntityLength $! itrConfig itr
+ actualLimit = if limit < 0 then
+ confLimit
else
limit
when (actualLimit <= 0)
-- makes 'Resource' abort with status \"415 Unsupported Media
-- Type\". If the request has no \"Content-Type\", it aborts with
-- \"400 Bad Request\".
-inputForm :: Int -> Resource [(String, String)]
+inputForm :: Int -> Resource [(String, FormData)]
inputForm limit
= limit `seq`
do cTypeM <- getContentType
++ show cType)
where
readWWWFormURLEncoded
- = do src <- input limit
- return $ parseWWWFormURLEncoded src
+ = liftM (map toPairWithFormData . parseWWWFormURLEncoded) (input limit)
readMultipartFormData params
= do case find ((== "boundary") . map toLower . fst) params of
Just (_, boundary)
-> do src <- inputLBS limit
case parse (multipartFormP boundary) src of
- (# Success pairs, _ #) -> return pairs
+ (# Success formList, _ #)
+ -> return formList
(# _, _ #)
-> abort BadRequest [] (Just "Unparsable multipart/form-data")
-- 20 bytes long. In this case the client shall only accept the first
-- 10 bytes of response body and thinks that the residual 10 bytes is
-- a part of header of the next response.
-setHeader :: ByteString -> ByteString -> Resource ()
+setHeader :: Strict.ByteString -> Strict.ByteString -> Resource ()
setHeader name value
= name `seq` value `seq`
driftTo DecidingHeader >> setHeader' name value
-setHeader' :: ByteString -> ByteString -> Resource ()
+setHeader' :: Strict.ByteString -> Strict.ByteString -> Resource ()
setHeader' name value
= name `seq` value `seq`
do itr <- getInteraction
let tr = case ver of
HttpVersion 1 0 -> unnormalizeCoding
HttpVersion 1 1 -> id
+ _ -> undefined
setHeader (C8.pack "Content-Encoding") (C8.pack $ joinWith ", " $ map tr codings)
+-- |Computation of @'setWWWAuthenticate' challenge@ sets the response
+-- header \"WWW-Authenticate\" to @challenge@.
+setWWWAuthenticate :: AuthChallenge -> Resource ()
+setWWWAuthenticate challenge
+ = setHeader (C8.pack "WWW-Authenticate") (C8.pack $ show challenge)
+
{- DecidingBody 時に使用するアクション群 -}
{-# INLINE output #-}
-- | This is mostly the same as 'output' but is more efficient.
-outputLBS :: LazyByteString -> Resource ()
+outputLBS :: Lazy.ByteString -> Resource ()
outputLBS str = do outputChunkLBS str
driftTo Done
{-# INLINE outputLBS #-}
{-# INLINE outputChunk #-}
-- | This is mostly the same as 'outputChunk' but is more efficient.
-outputChunkLBS :: LazyByteString -> Resource ()
-outputChunkLBS str
- = str `seq`
+outputChunkLBS :: Lazy.ByteString -> Resource ()
+outputChunkLBS wholeChunk
+ = wholeChunk `seq`
do driftTo DecidingBody
itr <- getInteraction
readItr itr itrWillDiscardBody id
unless (discardBody)
- $ sendChunks str limit
+ $ sendChunks wholeChunk limit
- unless (L8.null str)
+ unless (L8.null wholeChunk)
$ liftIO $ atomically $
writeItr itr itrBodyIsNull False
where
-- チャンクの大きさは Config で制限されてゐる。もし例へば
- -- "/dev/zero" を L8.readFile して作った LazyByteString をそのまま
+ -- "/dev/zero" を L8.readFile して作った Lazy.ByteString をそのまま
-- ResponseWriter に渡したりすると大變な事が起こる。何故なら
-- ResponseWriter は Transfer-Encoding: chunked の時、ヘッダを書
-- く爲にチャンクの大きさを測る。
- sendChunks :: LazyByteString -> Int -> Resource ()
+ sendChunks :: Lazy.ByteString -> Int -> Resource ()
sendChunks str limit
| L8.null str = return ()
| otherwise = do let (chunk, remaining) = L8.splitAt (fromIntegral limit) str
projects / Lucu.git / blobdiff