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{-# LANGUAGE BangPatterns #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
module Main where
import qualified Data.ByteString.Base16 as BS16
import qualified Data.ByteString.Char8 as C8
import Data.IORef
import qualified Data.Map.Strict as M
import Data.X509.CertificateStore
import Network.Run.TCP
import Network.TLS
import Network.TLS.Internal
import System.Console.GetOpt
import System.Environment (getArgs)
import System.Exit
import System.IO
import System.X509
import Common
import Imports
import Server
data Options = Options
{ optDebugLog :: Bool
, optClientAuth :: Bool
, optShow :: Bool
, optKeyLogFile :: Maybe FilePath
, optTrustedAnchor :: Maybe FilePath
, optGroups :: [Group]
, optCertFile :: FilePath
, optKeyFile :: FilePath
}
deriving (Show)
defaultOptions :: Options
defaultOptions =
Options
{ optDebugLog = False
, optClientAuth = False
, optShow = False
, optKeyLogFile = Nothing
, optTrustedAnchor = Nothing
, -- excluding FFDHE8192 for retry
optGroups = FFDHE8192 `delete` supportedGroups defaultSupported
, optCertFile = "servercert.pem"
, optKeyFile = "serverkey.pem"
}
options :: [OptDescr (Options -> Options)]
options =
[ Option
['a']
["client-auth"]
(NoArg (\o -> o{optClientAuth = True}))
"require client authentication"
, Option
['d']
["debug"]
(NoArg (\o -> o{optDebugLog = True}))
"print debug info"
, Option
['v']
["show-content"]
(NoArg (\o -> o{optShow = True}))
"print downloaded content"
, Option
['l']
["key-log-file"]
(ReqArg (\file o -> o{optKeyLogFile = Just file}) "<file>")
"a file to store negotiated secrets"
, Option
['g']
["groups"]
(ReqArg (\gs o -> o{optGroups = readGroups gs}) "<groups>")
"groups for key exchange"
, Option
['c']
["cert"]
(ReqArg (\fl o -> o{optCertFile = fl}) "<file>")
"certificate file"
, Option
['k']
["key"]
(ReqArg (\fl o -> o{optKeyFile = fl}) "<file>")
"key file"
, Option
['t']
["trusted-anchor"]
(ReqArg (\fl o -> o{optTrustedAnchor = Just fl}) "<file>")
"trusted anchor file"
]
usage :: String
usage = "Usage: server [OPTION] addr port"
showUsageAndExit :: String -> IO a
showUsageAndExit msg = do
putStrLn msg
putStrLn $ usageInfo usage options
exitFailure
serverOpts :: [String] -> IO (Options, [String])
serverOpts argv =
case getOpt Permute options argv of
(o, n, []) -> return (foldl (flip id) defaultOptions o, n)
(_, _, errs) -> showUsageAndExit $ concat errs
main :: IO ()
main = do
hSetBuffering stdout NoBuffering
args <- getArgs
(Options{..}, ips) <- serverOpts args
(host, port) <- case ips of
[h, p] -> return (h, p)
_ -> showUsageAndExit "cannot recognize <addr> and <port>\n"
when (null optGroups) $ do
putStrLn "Error: unsupported groups"
exitFailure
smgr <- newSessionManager
Right cred@(!_cc, !_priv) <- credentialLoadX509 optCertFile optKeyFile
mstore <-
if optClientAuth
then do
mstore' <- case optTrustedAnchor of
Nothing -> Just <$> getSystemCertificateStore
Just file -> readCertificateStore file
when (isNothing mstore') $ showUsageAndExit "cannot set trusted anchor"
return mstore'
else return Nothing
let keyLog = getLogger optKeyLogFile
creds = Credentials [cred]
makeCipherShowPretty
runTCPServer (Just host) port $ \sock -> do
let sparams = getServerParams creds optGroups smgr keyLog mstore
ctx <- contextNew sock sparams
when optDebugLog $
contextHookSetLogging
ctx
defaultLogging
{ loggingPacketSent = putStrLn . ("<< " ++)
, loggingPacketRecv = putStrLn . (">> " ++)
}
when (optDebugLog || optShow) $ putStrLn "------------------------"
handshake ctx
when optDebugLog $
getInfo ctx >>= printHandshakeInfo
server ctx optShow
bye ctx
getServerParams
:: Credentials
-> [Group]
-> SessionManager
-> (String -> IO ())
-> Maybe CertificateStore
-> ServerParams
getServerParams creds groups sm keyLog mstore =
defaultParamsServer
{ serverSupported = supported
, serverShared = shared
, serverHooks = hooks
, serverDebug = debug
, serverEarlyDataSize = 2048
, serverWantClientCert = isJust mstore
}
where
shared =
defaultShared
{ sharedCredentials = creds
, sharedSessionManager = sm
, sharedCAStore = case mstore of
Just store -> store
Nothing -> sharedCAStore defaultShared
}
supported =
defaultSupported
{ supportedGroups = groups
}
hooks =
defaultServerHooks
{ onALPNClientSuggest = Just chooseALPN
, onClientCertificate = case mstore of
Nothing -> onClientCertificate defaultServerHooks
Just _ ->
validateClientCertificate (sharedCAStore shared) (sharedValidationCache shared)
}
debug = defaultDebugParams{debugKeyLogger = keyLog}
chooseALPN :: [ByteString] -> IO ByteString
chooseALPN protos
| "http/1.1" `elem` protos = return "http/1.1"
| otherwise = return ""
newSessionManager :: IO SessionManager
newSessionManager = do
ref <- newIORef M.empty
return $
noSessionManager
{ sessionResume = \key -> do
C8.putStrLn $ "sessionResume: " <> BS16.encode key
M.lookup key <$> readIORef ref
, sessionResumeOnlyOnce = \key -> do
C8.putStrLn $ "sessionResumeOnlyOnce: " <> BS16.encode key
M.lookup key <$> readIORef ref
, sessionEstablish = \key val -> do
C8.putStrLn $ "sessionEstablish: " <> BS16.encode key
atomicModifyIORef' ref $ \m -> (M.insert key val m, Nothing)
, sessionInvalidate = \key -> do
C8.putStrLn $ "sessionEstablish: " <> BS16.encode key
atomicModifyIORef' ref $ \m -> (M.delete key m, ())
, sessionUseTicket = False
}
|
