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August 23, 2017 20:02
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{-# LANGUAGE NoImplicitPrelude #-} | |
{-# LANGUAGE OverloadedStrings #-} | |
{-# LANGUAGE RecordWildCards #-} | |
{-# LANGUAGE StrictData #-} | |
module Constellation.Node.Main where | |
import ClassyPrelude hiding (getArgs, log) | |
import Control.Concurrent (forkIO) | |
import Control.Logging | |
( LogLevel(LevelDebug, LevelInfo, LevelWarn, LevelError) | |
, setLogLevel, withStderrLogging, log', errorL' | |
) | |
import Data.Text.Format (Shown(Shown)) | |
import GHC.Conc (getNumProcessors) | |
import Network.Socket | |
( Family(AF_UNIX), SocketType(Stream), SockAddr(SockAddrUnix) | |
, socket, bind, listen, maxListenQueue, close | |
) | |
import System.Directory (doesFileExist, removeFile) | |
import System.Environment (getArgs) | |
import qualified Data.Text as T | |
import qualified Network.Wai.Handler.Warp as Warp | |
import Constellation.Enclave | |
(newEnclave', enclaveEncryptPayload, enclaveDecryptPayload) | |
import Constellation.Enclave.Key (mustLoadKeyPairs, mustLoadPublicKeys) | |
import Constellation.Enclave.Keygen.Main (generateKeyPair) | |
import Constellation.Node (newNode, runNode) | |
import Constellation.Node.Storage.BerkeleyDb (berkeleyDbStorage) | |
import Constellation.Node.Storage.Directory (directoryStorage) | |
import Constellation.Node.Storage.LevelDb (levelDbStorage) | |
import Constellation.Node.Storage.Memory (memoryStorage) | |
import Constellation.Node.Storage.Sqlite (sqliteStorage) | |
import Constellation.Node.Types | |
( Node(nodeStorage) | |
, Crypt(Crypt, encryptPayload, decryptPayload) | |
, Storage(closeStorage) | |
) | |
import Constellation.Node.Config (Config(..), extractConfig) | |
import Constellation.Util.AtExit (registerAtExit, withAtExit) | |
import Constellation.Util.Logging (debugf', logf', warnf) | |
import qualified Constellation.Node.Api as NodeApi | |
version :: Text | |
version = "0.1.0" | |
defaultMain :: IO () | |
defaultMain = do | |
args <- getArgs | |
(cfg, _) <- extractConfig args | |
if cfgJustShowVersion cfg | |
then putStrLn ("Constellation Node " ++ version) | |
else case cfgJustGenerateKeys cfg of | |
[] -> withStderrLogging $ run cfg | |
ks -> mapM_ generateKeyPair ks | |
run :: Config -> IO () | |
run cfg@Config{..} = do | |
let logLevel = case cfgVerbosity of | |
0 -> LevelError | |
1 -> LevelWarn | |
2 -> LevelInfo | |
3 -> LevelDebug | |
_ -> LevelDebug | |
logf' "Log level is {}" [show logLevel] | |
setLogLevel logLevel | |
debugf' "Configuration: {}" [show cfg] | |
ncpus <- getNumProcessors | |
logf' "Utilizing {} core(s)" [ncpus] | |
setNumCapabilities ncpus | |
-- validating passwords file | |
checkForAFile pwds | |
pwds <- case cfgPasswords of | |
Just passPath -> (map (Just . T.unpack) . lines) <$> | |
readFileUtf8 passPath | |
Nothing -> return $ replicate (length cfgPublicKeys) Nothing | |
when (length cfgPublicKeys /= length cfgPrivateKeys) $ | |
errorL' "The same amount of public keys and private keys must be specified" | |
when (length cfgPublicKeys /= length pwds) $ | |
errorL' "The same amount of passwords must be included in the passwords file as the number of private keys. (If a private key has no password, include a blank line.)" | |
when (cfgPort == 0) $ | |
errorL' "A listening port must be specified with 'port' in the configuration file or --port at runtime" | |
let kps = zip3 cfgPublicKeys cfgPrivateKeys pwds | |
logf' "Constructing Enclave using keypairs {}" | |
[show $ zip cfgPublicKeys cfgPrivateKeys] | |
ks <- mustLoadKeyPairs kps | |
e <- newEnclave' ks | |
let crypt = Crypt | |
{ encryptPayload = enclaveEncryptPayload e | |
, decryptPayload = enclaveDecryptPayload e | |
} | |
ast <- mustLoadPublicKeys cfgAlwaysSendTo | |
logf' "Initializing storage {}" [cfgStorage] | |
let experimentalStorageCaveat s = warnf "The {} storage engine is experimental. It may be removed or changed at any time. Please see the discussion at https://github.com/jpmorganchase/constellation/issues/37" [s :: Text] | |
storage <- case break (== ':') cfgStorage of | |
("bdb", ':':path) -> berkeleyDbStorage path | |
("dir", ':':path) -> directoryStorage path | |
("leveldb", ':':path) -> experimentalStorageCaveat "LevelDB" | |
>> levelDbStorage path | |
("memory", _ ) -> memoryStorage | |
("sqlite", ':':path) -> experimentalStorageCaveat "SQLite" | |
>> sqliteStorage path | |
_ -> berkeleyDbStorage cfgStorage -- Default | |
nvar <- newTVarIO =<< | |
newNode crypt storage cfgUrl (map fst ks) ast cfgOtherNodes | |
_ <- forkIO $ do | |
let mwl = if null cfgIpWhitelist | |
then Nothing | |
else Just $ NodeApi.whitelist cfgIpWhitelist | |
logf' "Public API listening on 0.0.0.0 port {} with whitelist: {}" | |
( cfgPort | |
, Shown $ if isNothing mwl then ["Disabled"] else cfgIpWhitelist | |
) | |
Warp.run cfgPort $ NodeApi.app mwl NodeApi.Public nvar | |
_ <- case cfgSocket of | |
Just sockPath -> void $ forkIO $ do | |
logf' "Internal API listening on {}" [sockPath] | |
resetSocket sockPath | |
sock <- socket AF_UNIX Stream 0 | |
bind sock $ SockAddrUnix sockPath | |
listen sock maxListenQueue | |
Warp.runSettingsSocket Warp.defaultSettings sock $ | |
NodeApi.app Nothing NodeApi.Private nvar | |
close sock | |
Nothing -> return () | |
registerAtExit $ do | |
log' "Shutting down... (Interrupting this will cause the next startup to take longer)" | |
case cfgSocket of | |
Just sockPath -> resetSocket sockPath | |
Nothing -> return () | |
readTVarIO nvar >>= closeStorage . nodeStorage | |
log' "Node started" | |
withAtExit $ runNode nvar | |
resetSocket :: FilePath -> IO () | |
resetSocket sockPath = doesFileExist sockPath >>= \exists -> | |
when exists $ removeFile sockPath | |
checkForAFile :: FilePath -> IO () | |
checkForAFile path = do | |
validFile <- doesFileExist filePath | |
if validFile | |
then putStrLn $ filePath ++ " is a file that exists" | |
else putStrLn $ filePath ++ " is not a file that exists" |
Author
smatthewenglish
commented
Aug 23, 2017
Your checkForAFile
method needs to take a filePath
argument.
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