mateamt/app/Main.hs

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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE TypeFamilies #-}
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{-# LANGUAGE FlexibleContexts #-}
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module Main where
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import Prelude as P
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import Servant
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import Servant.Server.Experimental.Auth
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import Data.Set as S (empty)
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import qualified Data.Map.Lazy as M
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import Data.ByteString.Lazy as BL hiding (putStrLn)
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import Data.ByteString.Char8 as B8 hiding (putStrLn)
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import qualified Data.Text as T
import Data.String
import Data.YAML
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import Data.Version (showVersion)
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import Data.CaseInsensitive (CI)
import qualified Data.CaseInsensitive as CI
import Data.IP
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import Database.PostgreSQL.Simple
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import Database.PostgreSQL.Simple.Migration
import Database.PostgreSQL.Simple.Util
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import Network.Wai
import Network.Wai.Logger
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import Network.Wai.Handler.Warp
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import Network.Wai.Middleware.Throttle
import Network.Socket (SockAddr(..), defaultPort)
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import Control.Monad.Reader
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import Control.Concurrent.STM (atomically)
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import Control.Concurrent.STM.TVar
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import Options.Applicative
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import System.Clock (TimeSpec(..))
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-- internal imports
import API
import Model as M
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import AppTypes
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import Types
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import Control
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import Janitor
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-- import Middleware
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import Paths_mateamt (version)
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main :: IO ()
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main = do
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(Options confLoc) <- execParser opts
raw <- BL.readFile (T.unpack confLoc)
case decode1 raw of
Left (loc, msg) ->
error (T.unpack $ confLoc <> ":" <>
fromString (prettyPosWithSource loc raw " error") <>
fromString msg
)
Right
(ServerConfig
db_host
db_port
db_name
db_user
db_passwd
sym
lport
lhost
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-- max_conn_per_client
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block_registration
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) -> do
conn <- connectPostgreSQL (
"host='" <> fromString (T.unpack db_host) <> "' " <>
"port=" <> fromString (show db_port) <> " " <>
"dbname='" <> fromString (T.unpack db_name) <> "' " <>
"user='" <> fromString (T.unpack db_user) <> "' " <>
"password='" <> fromString (T.unpack db_passwd) <> "'"
)
store <- newTVarIO S.empty
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-- tracker <- newTVarIO M.empty
migrationsExist <- existsTable conn "schema_migrations"
when (not migrationsExist) $ do
withTransaction conn $
void $ do
runMigration $
MigrationContext MigrationInitialization True conn
execute_ conn initAvatar
execute_ conn initUser
execute_ conn initProduct
execute_ conn initToken
execute_ conn initAuthData
execute_ conn initAmount
execute_ conn initJournal
execute_ conn initRole
execute_ conn initUserToRole
runInsertInitialRole
-- TODO: check for Migrations
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forkCleanProcess conn store
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withStdoutLogger $ \ilog -> do
let settings = setPort (fromIntegral lport) $
setHost (fromString $ T.unpack lhost) $
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-- setOnOpen (addToTracker tracker max_conn_per_client) $
-- setOnClose (removeFromTracker tracker) $
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setLogger ilog defaultSettings
initState = ReadState
{ rsConnection = conn
, rsTicketStore = store
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, rsCurrencySymbol = sym
, rsSoftwareVersion = T.pack (showVersion version)
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}
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expirationSpec = TimeSpec 5 0 -- five seconds
th <- initCustomThrottler (defaultThrottleSettings expirationSpec)
(\req ->
let headers = requestHeaders req
in case lookup "x-forwarded-for" headers of
Just addrs ->
let addr = fst (B8.break (== ',') addrs)
in Right $ Address $ toSockAddr (read (B8.unpack addr), defaultPort)
Nothing -> Right $ Address $ remoteHost req
)
runSettings settings (throttle th (app block_registration initState))
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where
opts = info (options <**> helper)
( fullDesc
<> progDesc "Run the \"mateamt\" API-Server."
<> header "mateamt - Your friendly mate distribution office"
)
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app :: Bool -> ReadState -> Application
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-- app conn = serveWithContext userApi genAuthServerContext (users conn)
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app block_registration initState =
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serveWithContext mateApi (genAuthServerContext (rsConnection initState)) $
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hoistServerWithContext
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mateApi
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authProxy
(`runReaderT` initState)
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( authGet :<|>
authSend :<|>
authLogout :<|>
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authManageList :<|>
authManageNewAuth :<|>
authManageDeleteAuth :<|>
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(
if block_registration
then
const $ throwError $ err406
{ errBody = "User registration is not allowed."
}
else
userNew
) :<|>
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userGet :<|>
userUpdate :<|>
userList :<|>
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userRecharge :<|>
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userTransfer :<|>
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productNew :<|>
productOverview :<|>
productStockRefill :<|>
productStockUpdate :<|>
productList :<|>
productShortList :<|>
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buy :<|>
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journalShow :<|>
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journalCheck :<|>
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avatarGet :<|>
avatarInsert :<|>
avatarUpdate :<|>
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avatarList :<|>
metaGet
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)
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mateApi :: Proxy MateAPI
mateApi = Proxy
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authProxy :: Proxy '[ AuthHandler Request (Maybe (Int, AuthMethod)) ]
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authProxy = Proxy
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genAuthServerContext
:: Connection
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-> Context '[ AuthHandler Request (Maybe (Int, AuthMethod)) ]
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genAuthServerContext conn = authHandler conn Servant.:. EmptyContext
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type instance AuthServerData (AuthProtect "header-auth") = Maybe (Int, AuthMethod)
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authHandler :: Connection -> AuthHandler Request (Maybe (Int, AuthMethod))
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authHandler conn = mkAuthHandler handler
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where
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handler :: Request -> Handler (Maybe (Int, AuthMethod))
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handler req = do
let headers = requestHeaders req
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case lookup "Authentication" headers of
Just hh ->
validateToken hh conn
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_ ->
return Nothing