mighttpd2-3.4.5: src/Server.hs
{-# LANGUAGE OverloadedStrings, CPP, BangPatterns #-}
module Server (server, defaultDomain, defaultPort) where
import Control.Concurrent (runInUnboundThread)
import Control.Exception (try)
import Control.Monad (unless, when)
import qualified Data.ByteString.Char8 as BS
#ifdef HTTP_OVER_TLS
import Data.Char (isSpace)
import Data.List (dropWhile, dropWhileEnd, break)
#endif
import Data.Streaming.Network (bindPortTCP)
import Network.Socket (Socket, close)
import qualified Network.HTTP.Client as H
import Network.Wai.Application.Classic hiding ((</>))
import Network.Wai.Handler.Warp
import Network.Wai.Logger
import System.Exit (ExitCode(..), exitSuccess)
import System.IO
import System.IO.Error (ioeGetErrorString)
import System.Posix (exitImmediately, Handler(..), getProcessID, setFileMode)
import System.Posix.Signals (sigCHLD)
import Program.Mighty
import WaiApp
import qualified Network.Wai.Middleware.Push.Referer as P
#ifdef HTTP_OVER_TLS
import Control.Concurrent.Async (concurrently)
import Control.Monad (void)
import Network.Wai.Handler.WarpTLS
import Network.TLS.SessionManager
#else
data TLSSettings = TLSSettings
#endif
----------------------------------------------------------------
defaultDomain :: Domain
defaultDomain = "localhost"
defaultPort :: Int
defaultPort = 80
openFileNumber :: Integer
openFileNumber = 10000
logBufferSize :: Int
logBufferSize = 4 * 1024 * 10
managerNumber :: Int
managerNumber = 1024 -- FIXME
----------------------------------------------------------------
type LogRemover = IO ()
----------------------------------------------------------------
server :: Option -> Reporter -> RouteDB -> IO ()
server opt rpt route = reportDo rpt $ do
unlimit openFileNumber
svc <- openService opt
unless debug writePidFile
rdr <- newRouteDBRef route
tlsSetting <- getTlsSetting opt
setGroupUser (opt_user opt) (opt_group opt)
logCheck logtype
(zdater,_) <- clockDateCacher
ap <- initLogger FromSocket logtype zdater
let lgr = apacheLogger ap
remover = logRemover ap
pushlgr = serverpushLogger ap
mgr <- getManager opt
setHandlers opt rpt svc remover rdr
report rpt "Mighty started"
runInUnboundThread $ mighty opt rpt svc lgr pushlgr mgr rdr tlsSetting
report rpt "Mighty retired"
finReporter rpt
remover
exitSuccess
where
debug = opt_debug_mode opt
port = opt_port opt
pidfile
| port == 80 = opt_pid_file opt
| otherwise = opt_pid_file opt ++ show port
writePidFile = do
pid <- getProcessID
writeFile pidfile $ show pid ++ "\n"
setFileMode pidfile 0o644
logspec = FileLogSpec {
log_file = opt_log_file opt
, log_file_size = fromIntegral $ opt_log_file_size opt
, log_backup_number = opt_log_backup_number opt
}
logtype
| not (opt_logging opt) = LogNone
| debug = LogStdout logBufferSize
| otherwise = LogFile logspec logBufferSize
setHandlers :: Option -> Reporter -> Service -> LogRemover -> RouteDBRef -> IO ()
setHandlers opt rpt svc remover rdr = do
setHandler sigStop stopHandler
setHandler sigRetire retireHandler
setHandler sigInfo infoHandler
setHandler sigReload reloadHandler
setHandler sigCHLD Ignore -- for CGI
where
stopHandler = Catch $ do
report rpt "Mighty finished"
finReporter rpt
closeService svc
remover
exitImmediately ExitSuccess
retireHandler = Catch $ do
report rpt "Mighty retiring"
closeService svc -- this lets warp break
infoHandler = Catch $ report rpt "obsolted"
reloadHandler = Catch $ do
ifRouteFileIsValid rpt opt $ \newroute -> do
writeRouteDBRef rdr newroute
report rpt "Mighty reloaded"
getTlsSetting :: Option -> IO TLSSettings
getTlsSetting _opt =
#ifdef HTTP_OVER_TLS
case opt_service _opt of
0 -> return defaultTlsSettings -- this is dummy
_ -> do cert <- BS.readFile $ opt_tls_cert_file _opt
let strip = dropWhileEnd isSpace . dropWhile isSpace
split "" = []
split s = case break (',' ==) s of
("",r) -> split (tail r)
(s',"") -> [s']
(s',r) -> s' : split (tail r)
chain_files = map strip $ split $ opt_tls_chain_files _opt
chains <- mapM BS.readFile chain_files
key <- BS.readFile $ opt_tls_key_file _opt
let settings0 = tlsSettingsChainMemory cert chains key
settings = settings0 {
tlsSessionManagerConfig = Just defaultConfig { dbMaxSize = 1000 }
}
return settings
#else
return TLSSettings
#endif
----------------------------------------------------------------
ifRouteFileIsValid :: Reporter -> Option -> (RouteDB -> IO ()) -> IO ()
ifRouteFileIsValid rpt opt act = case opt_routing_file opt of
Nothing -> return ()
Just rfile -> try (parseRoute rfile defaultDomain defaultPort) >>= either reportError act
where
reportError = report rpt . BS.pack . ioeGetErrorString
----------------------------------------------------------------
mighty :: Option -> Reporter -> Service
-> ApacheLogger -> ServerPushLogger
-> ConnPool -> RouteDBRef
-> TLSSettings
-> IO ()
mighty opt rpt svc lgr pushlgr mgr rdr _tlsSetting
= reportDo rpt $ case svc of
HttpOnly s -> runSettingsSocket setting s app
#ifdef HTTP_OVER_TLS
HttpsOnly s -> runTLSSocket _tlsSetting setting s app
HttpAndHttps s1 s2 -> void $ concurrently
(runSettingsSocket setting s1 app)
(runTLSSocket _tlsSetting setting s2 app)
#else
_ -> error "never reach"
#endif
where
app = P.pushOnReferer P.defaultSettings
(fileCgiApp cspec filespec cgispec revproxyspec rdr)
debug = opt_debug_mode opt
-- We don't use setInstallShutdownHandler because we may use
-- two sockets for HTTP and HTTPS.
setting = setPort (opt_port opt) -- just in case
$ setHost (fromString (opt_host opt)) -- just in case
$ setOnException (if debug then printStdout else warpHandler rpt)
$ setTimeout (opt_connection_timeout opt) -- seconds
$ setFdCacheDuration (opt_fd_cache_duration opt)
$ setFileInfoCacheDuration 10
$ setServerName serverName
$ setLogger lgr
$ setServerPushLogger pushlgr
defaultSettings
serverName = BS.pack $ opt_server_name opt
cspec = ClassicAppSpec {
softwareName = serverName
, statusFileDir = fromString $ opt_status_file_dir opt
}
filespec = FileAppSpec {
indexFile = fromString $ opt_index_file opt
, isHTML = \x -> ".html" `isSuffixOf` x || ".htm" `isSuffixOf` x
}
cgispec = CgiAppSpec {
indexCgi = "index.cgi"
}
revproxyspec = RevProxyAppSpec {
revProxyManager = mgr
}
----------------------------------------------------------------
data Service = HttpOnly Socket | HttpsOnly Socket | HttpAndHttps Socket Socket
----------------------------------------------------------------
openService :: Option -> IO Service
openService opt
| service == 1 = do
s <- bindPortTCP httpsPort hostpref
debugMessage $ urlForHTTPS httpsPort
return $ HttpsOnly s
| service == 2 = do
s1 <- bindPortTCP httpPort hostpref
s2 <- bindPortTCP httpsPort hostpref
debugMessage $ urlForHTTP httpPort
debugMessage $ urlForHTTPS httpsPort
return $ HttpAndHttps s1 s2
| otherwise = do
s <- bindPortTCP httpPort hostpref
debugMessage $ urlForHTTP httpPort
return $ HttpOnly s
where
httpPort = opt_port opt
httpsPort = opt_tls_port opt
hostpref = fromString $ opt_host opt
service = opt_service opt
debug = opt_debug_mode opt
debugMessage msg = when debug $ do
putStrLn msg
hFlush stdout
urlForHTTP 80 = "http://localhost/"
urlForHTTP p = "http://localhost:" ++ show p ++ "/"
urlForHTTPS 443 = "https://localhost/"
urlForHTTPS p = "https://localhost:" ++ show p ++ "/"
----------------------------------------------------------------
closeService :: Service -> IO ()
closeService (HttpOnly s) = close s
closeService (HttpsOnly s) = close s
closeService (HttpAndHttps s1 s2) = close s1 >> close s2
----------------------------------------------------------------
type ConnPool = H.Manager
getManager :: Option -> IO ConnPool
getManager opt = H.newManager H.defaultManagerSettings {
H.managerConnCount = managerNumber
, H.managerResponseTimeout = responseTimeout
}
where
responseTimeout
| opt_proxy_timeout opt == 0 = H.managerResponseTimeout H.defaultManagerSettings
| otherwise = H.responseTimeoutMicro (opt_proxy_timeout opt * 1000000) -- micro seconds