Support SCRAM-SHA-256
This commit is contained in:
Fumiaki Kinoshita
parent
995087e9a0
commit
90afe88784
1 changed files with 81 additions and 48 deletions
|
|
@ -11,7 +11,7 @@ module Database.MongoDB.Query (
|
|||
-- * Database
|
||||
Database, allDatabases, useDb, thisDatabase,
|
||||
-- ** Authentication
|
||||
Username, Password, auth, authMongoCR, authSCRAMSHA1,
|
||||
Username, Password, auth, authMongoCR, authSCRAMSHA1, authSCRAMSHA256,
|
||||
-- * Collection
|
||||
Collection, allCollections,
|
||||
-- ** Selection
|
||||
|
|
@ -61,8 +61,10 @@ import Control.Monad
|
|||
)
|
||||
import Control.Monad.Reader (MonadReader, ReaderT, ask, asks, local, runReaderT)
|
||||
import Control.Monad.Trans (MonadIO, liftIO, lift)
|
||||
import Control.Monad.Trans.Except
|
||||
import qualified Crypto.Hash.MD5 as MD5
|
||||
import qualified Crypto.Hash.SHA1 as SHA1
|
||||
import qualified Crypto.Hash.SHA256 as SHA256
|
||||
import qualified Crypto.MAC.HMAC as HMAC
|
||||
import qualified Crypto.Nonce as Nonce
|
||||
import Data.Binary.Put (runPut)
|
||||
|
|
@ -285,62 +287,93 @@ authMongoCR usr pss = do
|
|||
n <- at "nonce" <$> runCommand ["getnonce" =: (1 :: Int)]
|
||||
true1 "ok" <$> runCommand ["authenticate" =: (1 :: Int), "user" =: usr, "nonce" =: n, "key" =: pwKey n usr pss]
|
||||
|
||||
data HashAlgorithm = SHA1 | SHA256 deriving Show
|
||||
|
||||
hash :: HashAlgorithm -> B.ByteString -> B.ByteString
|
||||
hash SHA1 = SHA1.hash
|
||||
hash SHA256 = SHA256.hash
|
||||
|
||||
authSCRAMSHA1 :: MonadIO m => Username -> Password -> Action m Bool
|
||||
authSCRAMSHA1 = authSCRAMWith SHA1
|
||||
|
||||
authSCRAMSHA256 :: MonadIO m => Username -> Password -> Action m Bool
|
||||
authSCRAMSHA256 = authSCRAMWith SHA256
|
||||
|
||||
toAuthResult :: Functor m => ExceptT String (Action m) () -> Action m Bool
|
||||
toAuthResult = fmap (either (const False) (const True)) . runExceptT
|
||||
|
||||
-- | It should technically perform SASLprep, but the implementation is currently id
|
||||
saslprep :: Text -> Text
|
||||
saslprep = id
|
||||
|
||||
authSCRAMWith :: MonadIO m => HashAlgorithm -> Username -> Password -> Action m Bool
|
||||
-- ^ Authenticate with the current database, using the SCRAM-SHA-1 authentication mechanism (default in MongoDB server >= 3.0)
|
||||
authSCRAMSHA1 un pw = do
|
||||
let hmac = HMAC.hmac SHA1.hash 64
|
||||
authSCRAMWith algo un pw = toAuthResult $ do
|
||||
let hmac = HMAC.hmac (hash algo) 64
|
||||
nonce <- liftIO (Nonce.withGenerator Nonce.nonce128 <&> B64.encode)
|
||||
let firstBare = B.concat [B.pack $ "n=" ++ T.unpack un ++ ",r=", nonce]
|
||||
let client1 = ["saslStart" =: (1 :: Int), "mechanism" =: ("SCRAM-SHA-1" :: String), "payload" =: (B.unpack . B64.encode $ B.concat [B.pack "n,,", firstBare]), "autoAuthorize" =: (1 :: Int)]
|
||||
server1 <- runCommand client1
|
||||
let client1 =
|
||||
[ "saslStart" =: (1 :: Int)
|
||||
, "mechanism" =: case algo of
|
||||
SHA1 -> "SCRAM-SHA-1" :: String
|
||||
SHA256 -> "SCRAM-SHA-256"
|
||||
, "payload" =: (B.unpack . B64.encode $ B.concat [B.pack "n,,", firstBare])
|
||||
, "autoAuthorize" =: (1 :: Int)
|
||||
]
|
||||
server1 <- lift $ runCommand client1
|
||||
|
||||
shortcircuit (true1 "ok" server1) $ do
|
||||
let serverPayload1 = B64.decodeLenient . B.pack . at "payload" $ server1
|
||||
let serverData1 = parseSCRAM serverPayload1
|
||||
let iterations = read . B.unpack $ Map.findWithDefault "1" "i" serverData1
|
||||
let salt = B64.decodeLenient $ Map.findWithDefault "" "s" serverData1
|
||||
let snonce = Map.findWithDefault "" "r" serverData1
|
||||
shortcircuit (true1 "ok" server1) (show server1)
|
||||
let serverPayload1 = B64.decodeLenient . B.pack . at "payload" $ server1
|
||||
let serverData1 = parseSCRAM serverPayload1
|
||||
let iterations = read . B.unpack $ Map.findWithDefault "1" "i" serverData1
|
||||
let salt = B64.decodeLenient $ Map.findWithDefault "" "s" serverData1
|
||||
let snonce = Map.findWithDefault "" "r" serverData1
|
||||
|
||||
shortcircuit (B.isInfixOf nonce snonce) $ do
|
||||
let withoutProof = B.concat [B.pack "c=biws,r=", snonce]
|
||||
let digestS = B.pack $ T.unpack un ++ ":mongo:" ++ T.unpack pw
|
||||
let digest = B16.encode $ MD5.hash digestS
|
||||
let saltedPass = scramHI digest salt iterations
|
||||
let clientKey = hmac saltedPass (B.pack "Client Key")
|
||||
let storedKey = SHA1.hash clientKey
|
||||
let authMsg = B.concat [firstBare, B.pack ",", serverPayload1, B.pack ",", withoutProof]
|
||||
let clientSig = hmac storedKey authMsg
|
||||
let pval = B64.encode . BS.pack $ BS.zipWith xor clientKey clientSig
|
||||
let clientFinal = B.concat [withoutProof, B.pack ",p=", pval]
|
||||
let serverKey = hmac saltedPass (B.pack "Server Key")
|
||||
let serverSig = B64.encode $ hmac serverKey authMsg
|
||||
let client2 = ["saslContinue" =: (1 :: Int), "conversationId" =: (at "conversationId" server1 :: Int), "payload" =: B.unpack (B64.encode clientFinal)]
|
||||
server2 <- runCommand client2
|
||||
shortcircuit (B.isInfixOf nonce snonce) "nonce"
|
||||
let withoutProof = B.concat [B.pack "c=biws,r=", snonce]
|
||||
let digest = case algo of
|
||||
SHA1 -> B16.encode $ MD5.hash $ B.pack $ T.unpack un ++ ":mongo:" ++ T.unpack pw
|
||||
SHA256 -> B.pack $ T.unpack $ saslprep pw
|
||||
let saltedPass = scramHI algo digest salt iterations
|
||||
let clientKey = hmac saltedPass (B.pack "Client Key")
|
||||
let storedKey = hash algo clientKey
|
||||
let authMsg = B.concat [firstBare, B.pack ",", serverPayload1, B.pack ",", withoutProof]
|
||||
let clientSig = hmac storedKey authMsg
|
||||
let pval = B64.encode . BS.pack $ BS.zipWith xor clientKey clientSig
|
||||
let clientFinal = B.concat [withoutProof, B.pack ",p=", pval]
|
||||
|
||||
shortcircuit (true1 "ok" server2) $ do
|
||||
let serverPayload2 = B64.decodeLenient . B.pack $ at "payload" server2
|
||||
let serverData2 = parseSCRAM serverPayload2
|
||||
let serverSigComp = Map.findWithDefault "" "v" serverData2
|
||||
let client2 =
|
||||
[ "saslContinue" =: (1 :: Int)
|
||||
, "conversationId" =: (at "conversationId" server1 :: Int)
|
||||
, "payload" =: B.unpack (B64.encode clientFinal)
|
||||
]
|
||||
server2 <- lift $ runCommand client2
|
||||
shortcircuit (true1 "ok" server2) (show server2)
|
||||
|
||||
shortcircuit (serverSig == serverSigComp) $ do
|
||||
let done = true1 "done" server2
|
||||
if done
|
||||
then return True
|
||||
else do
|
||||
let client2Step2 = [ "saslContinue" =: (1 :: Int)
|
||||
, "conversationId" =: (at "conversationId" server1 :: Int)
|
||||
, "payload" =: String ""]
|
||||
server3 <- runCommand client2Step2
|
||||
shortcircuit (true1 "ok" server3) $ do
|
||||
return True
|
||||
let serverKey = hmac saltedPass (B.pack "Server Key")
|
||||
let serverSig = B64.encode $ hmac serverKey authMsg
|
||||
let serverPayload2 = B64.decodeLenient . B.pack $ at "payload" server2
|
||||
let serverData2 = parseSCRAM serverPayload2
|
||||
let serverSigComp = Map.findWithDefault "" "v" serverData2
|
||||
|
||||
shortcircuit (serverSig == serverSigComp) "server signature does not match"
|
||||
if true1 "done" server2
|
||||
then return ()
|
||||
else do
|
||||
let client2Step2 = [ "saslContinue" =: (1 :: Int)
|
||||
, "conversationId" =: (at "conversationId" server1 :: Int)
|
||||
, "payload" =: String ""]
|
||||
server3 <- lift $ runCommand client2Step2
|
||||
shortcircuit (true1 "ok" server3) "server3"
|
||||
|
||||
shortcircuit :: Monad m => Bool -> String -> ExceptT String m ()
|
||||
shortcircuit True _ = pure ()
|
||||
shortcircuit False reason = throwE (show reason)
|
||||
|
||||
scramHI :: HashAlgorithm -> B.ByteString -> B.ByteString -> Int -> B.ByteString
|
||||
scramHI algo digest salt iters = snd $ foldl com (u1, u1) [1..(iters-1)]
|
||||
where
|
||||
shortcircuit True f = f
|
||||
shortcircuit False _ = return False
|
||||
|
||||
scramHI :: B.ByteString -> B.ByteString -> Int -> B.ByteString
|
||||
scramHI digest salt iters = snd $ foldl com (u1, u1) [1..(iters-1)]
|
||||
where
|
||||
hmacd = HMAC.hmac SHA1.hash 64 digest
|
||||
hmacd = HMAC.hmac (hash algo) 64 digest
|
||||
u1 = hmacd (B.concat [salt, BS.pack [0, 0, 0, 1]])
|
||||
com (u,uc) _ = let u' = hmacd u in (u', BS.pack $ BS.zipWith xor uc u')
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue