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{-# LANGUAGE CPP #-}
{-# OPTIONS_GHC -fno-warn-orphans #-}
{-
Copyright (C) 2008 John MacFarlane <jgm@berkeley.edu>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-}
{- Re-exports Happstack functions needed by gitit, including
replacements for Happstack functions that don't handle UTF-8 properly, and
new functions for setting headers and zipping contents and for looking up IP
addresses.
-}
module Network.Gitit.Server
( module Happstack.Server
, withExpiresHeaders
, setContentType
, setFilename
, lookupIPAddr
, getHost
, compressedResponseFilter
)
where
import Happstack.Server
import Happstack.Server.Compression (compressedResponseFilter)
import Network.Socket (getAddrInfo, defaultHints, addrAddress)
import Control.Monad.Reader
import Data.ByteString.UTF8 as U hiding (lines)
withExpiresHeaders :: ServerMonad m => m Response -> m Response
withExpiresHeaders = liftM (setHeader "Cache-Control" "max-age=21600")
setContentType :: String -> Response -> Response
setContentType = setHeader "Content-Type"
setFilename :: String -> Response -> Response
setFilename = setHeader "Content-Disposition" . \fname -> "attachment; filename=\"" ++ fname ++ "\""
-- IP lookup
lookupIPAddr :: String -> IO (Maybe String)
lookupIPAddr hostname = do
addrs <- getAddrInfo (Just defaultHints) (Just hostname) Nothing
if null addrs
then return Nothing
else return $ Just $ takeWhile (/=':') $ show $ addrAddress $ case addrs of -- head addrs
[] -> error "lookupIPAddr, no addrs"
(x:_) -> x
getHost :: ServerMonad m => m (Maybe String)
getHost = liftM (maybe Nothing (Just . U.toString)) $ getHeaderM "Host"
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