packages feed

liboath-hs (empty) → 0.0.1.0

raw patch · 9 files changed

+1084/−0 lines, 9 filesdep +basedep +bytestringdep +inline-csetup-changed

Dependencies added: base, bytestring, inline-c, liboath-hs, safe-exceptions, time

Files

+ LICENSE view
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+ README.md view
@@ -0,0 +1,13 @@+# liboath-hs++[![Build+Status](https://travis-ci.org/parsonsmatt/liboath-hs.svg?branch=master)](https://travis-ci.org/parsonsmatt/liboath-hs)++This package contains Haskell bindings for the [OATH Toolkit](http://www.nongnu.org/oath-toolkit/index.html) C library.++The bindings are developed on an as-needed basis. If you need something, please+submit an issue or pull request and I'll be happy to help.++You should probably just use+[`one-time-password`](https://hackage.haskell.org/package/one-time-password)+instead, though.
+ Setup.hs view
@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain
+ app/Main.hs view
@@ -0,0 +1,20 @@+module Main where++import Control.Monad (when)+import qualified Foreign.Marshal.Alloc as Alloc+import System.Environment (getArgs)+import qualified Foreign.C.String as C+import qualified Data.ByteString.Char8 as BS8+import qualified Foreign.C.Types as C+import Data.Time.Clock.POSIX+import Data.Function (fix)+import Foreign.Storable (peek)++import LibOath++-- this is basically just copying over the main function from oathtool.c+main :: IO ()+main = do+    (input : _) <- getArgs++    either print BS8.putStrLn =<< generateTOTPFromSecret (BS8.pack input)
+ liboath-hs.cabal view
@@ -0,0 +1,52 @@+name:                liboath-hs+version:             0.0.1.0+synopsis:            Bindings to liboath+description:         See README for details.+homepage:            https://github.com/parsonsmatt/liboath-hs#readme+license:             GPL-3+license-file:        LICENSE+author:              Matt Parsons+maintainer:          parsonsmatt@gmail.com+copyright:           2017 Matt Parsons+category:            Security+build-type:          Simple+extra-source-files:  README.md+cabal-version:       >=1.10++library+  hs-source-dirs:      src+  exposed-modules:     LibOath+                     , LibOath.Internal+  build-depends:       base            >= 4.7     && < 5+                     , inline-c        >= 0.5.6.1 && < 0.6.1.0+                     , safe-exceptions+                     , bytestring+                     , time+  default-language:    Haskell2010+  c-sources:           src/LibOath/Internal.c+  includes:            oath.h+  extra-libraries:     oath+  cc-options:          -Wall+  pkgconfig-depends:   liboath >= 2.0++executable oathtool-hs+  hs-source-dirs:      app+  main-is:             Main.hs+  build-depends:       base+                     , liboath-hs+                     , time+                     , bytestring+  default-language:    Haskell2010++test-suite liboath-hs-test+  type:                exitcode-stdio-1.0+  hs-source-dirs:      test+  main-is:             Spec.hs+  build-depends:       base+                     , liboath-hs+  ghc-options:         -threaded -rtsopts -with-rtsopts=-N+  default-language:    Haskell2010++source-repository head+  type:     git+  location: https://github.com/parsonsmatt/liboath-hs
+ src/LibOath.hs view
@@ -0,0 +1,107 @@+{-# LANGUAGE PatternSynonyms #-}++{-|+Module      : LibOath+Description : This function exports a safe interface to the liboath library.+Copyright   : (c) Matt Parsons, 2017+License     : GPL-3+Maintainer  : parsonsmatt@gmail.com+Stability   : experimental+Portability : POSIX++This module exports a safe and idiomatic interface to liboath. It is designed to+be imported qualified.+-}+module LibOath+    ( module LibOath+    , Error(..)+    , pattern Base32+    , Base32(unBase32)+    ) where++import           Control.Exception.Safe+import           Control.Monad          (join)+import           Data.ByteString        (ByteString)+import qualified Data.ByteString        as BS+import           Data.Time.Clock.POSIX  (getPOSIXTime)+import qualified Foreign.C.String       as C+import qualified Foreign.Marshal.Alloc  as Alloc+import           Foreign.Storable       (peek)+import qualified Language.C.Inline      as C++import           LibOath.Internal++-- | Unwrap an 'Action', returning 'Either' an 'Error' caused by initialization+-- failure of+run :: Action a -> IO (Either Error a)+run = bracket initialize finalize . handle+  where+    initialize =+        fmap fromCInt oath_init+    finalize _ =+        fromCInt <$> oath_done+    handle action OK =+        Right <$> unAction action+    handle _ err =+        pure (Left err)++generateTOTPFromSecret :: ByteString -> IO (Either Error ByteString)+generateTOTPFromSecret bs = fmap join . run $ do+    eerrb32 <- decodeBase32 bs+    case eerrb32 of+        Left err  -> pure (Left err)+        Right b32 -> generateTOTP b32+++-- | This function takes the given 'ByteString' and decodes into a 'Base32'+-- representation.+decodeBase32 :: ByteString -> Action (Either Error Base32)+decodeBase32 bs = Action $ do+    BS.useAsCString bs $ \cStr -> do+        secretPtr <- Alloc.malloc+        secretLenPtr <- Alloc.malloc+        oath_base32_decode cStr (fromIntegral (BS.length bs)) secretPtr secretLenPtr+            `whenOKM` do+                secretLen <- peek secretLenPtr+                secret <- peek secretPtr+                newBS <- BS.packCStringLen (secret, fromIntegral secretLen)+                pure (UnsafeBase32 newBS)++-- | This function generates a TOTP for the given 'Base32' with the default+-- configuration.+generateTOTP :: Base32 -> Action (Either Error ByteString)+generateTOTP (Base32 bs) = Action $ do+    BS.useAsCString bs $ \secret -> do+        let secretLen = fromIntegral (BS.length bs)+        -- assuming totp given+        -- this is going to+        now <- fromIntegral . floor <$> getPOSIXTime+        -- assume all defaults+        -- TODO: extract this to an options+        let whenTime = now+            t0 = 0+            timeStepSize = 0+            digits = 6+            window = 0+            iter = 1+        otpPtr <- C.newCString (replicate (fromIntegral digits + 1) ' ')+        oath_totp_generate+            secret secretLen+            (whenTime + iter * timeStepSize)+            (fromIntegral (case timeStepSize of C.CTime i -> i))+            t0+            digits+            otpPtr+            `whenOKM` do+                BS.packCString otpPtr++whenOK :: C.CInt -> IO a -> IO (Either Error a)+whenOK rc action =+    case fromCInt rc of+        OK  -> Right <$> action+        err -> pure (Left err)++whenOKM :: IO C.CInt -> IO a -> IO (Either Error a)+whenOKM mrc action = do+    rc <- mrc+    whenOK rc action
+ src/LibOath/Internal.c view
@@ -0,0 +1,51 @@++#include <liboath/oath.h>++int inline_c_LibOath_Internal_0_e5c09df3584bfac5d1724487f17015d119521c92() {+return ( oath_init() );+}+++int inline_c_LibOath_Internal_1_a3a650f2b04aa545b11a0331d5430727896128b7() {+return ( oath_done() );+}+++const char * inline_c_LibOath_Internal_2_b20401b6ccdbfbd806467ae7a5ebccec429550d0(char * minVersion_inline_c_0) {+return ( oath_check_version(minVersion_inline_c_0) );+}+++const char * inline_c_LibOath_Internal_3_ffc6a8a5085d32853b6c7f73038d1c1e3ea3fbb2(int err_inline_c_0) {+return ( oath_strerror(err_inline_c_0) );+}+++int inline_c_LibOath_Internal_4_74b0c50ca158dbc53ba2bcc21bfdf32cc5634402(const char * in__inline_c_0, size_t inlen_inline_c_1, char ** out_inline_c_2, size_t * outlen_inline_c_3) {+return (+        oath_base32_decode(in__inline_c_0, inlen_inline_c_1, out_inline_c_2, outlen_inline_c_3)+    );+}+++int inline_c_LibOath_Internal_5_f3a3187368ef4f44055396679d0405c91018a031(const char * in__inline_c_0, size_t inlen_inline_c_1, char ** out_inline_c_2, size_t * outlen_inline_c_3) {+return (+        oath_base32_encode(in__inline_c_0, inlen_inline_c_1, out_inline_c_2, outlen_inline_c_3)+    );+}+++int inline_c_LibOath_Internal_6_aa953bedae5657c3a6df617e2a429a2b85f05ddf(const char * secret_inline_c_0, size_t secretLen_inline_c_1, time_t now_inline_c_2, unsigned timeStepSize_inline_c_3, time_t startOffset_inline_c_4, unsigned digits_inline_c_5, char * outputOtp_inline_c_6) {+return (+        oath_totp_generate(+            secret_inline_c_0,+            secretLen_inline_c_1,+            now_inline_c_2,+            timeStepSize_inline_c_3,+            startOffset_inline_c_4,+            digits_inline_c_5,+            outputOtp_inline_c_6+        )+    );+}+
+ src/LibOath/Internal.hs view
@@ -0,0 +1,163 @@+{-# LANGUAGE PatternSynonyms #-}+{-# LANGUAGE GeneralizedNewtypeDeriving #-}+{-# LANGUAGE QuasiQuotes     #-}+{-# LANGUAGE TemplateHaskell #-}+++{-|+Module      : LibOath.Internal+Description : Exports the C code functions. Use at your own risk!+Copyright   : (c) Matt Parsons, 2017+License     : GPL-3+Maintainer  : parsonsmatt@gmail.com+Stability   : experimental+Portability : POSIX++This module contains the C functions called via "inline-c". Import these to use at your own risk.++The functions are undocumented here. They are mirrored from <http://www.nongnu.org/oath-toolkit/liboath-api/liboath-oath.html the library documentation>.++-}+module LibOath.Internal where++import Data.Monoid ((<>))+import Data.ByteString (ByteString)+import Control.Monad.IO.Class (MonadIO)+import           Data.Maybe        (fromMaybe)+import qualified Foreign.C.String  as C+import           Foreign.Ptr       (Ptr)+import           GHC.Stack         (HasCallStack)+import qualified Language.C.Inline as C++C.context (C.baseCtx <> C.bsCtx)++C.include "<liboath/oath.h>"++-- Haskell utilities++-- | The type of @liboath@ actions. This is a wrapper over 'IO' that we use+-- to help use the library safely. The library needs to be initialized and+-- finalized. The 'run' method provided in 'LibOath' handles unwrapping+-- this type safely.+newtype Action a = Action { unAction :: IO a }+  deriving (Functor, Applicative, Monad, MonadIO)++-- | The type of errors returned by the @liboath@ library. Technically+-- speaking, this is the Haskell representation of the @oath_rc@ type+-- defined in @liboath/oath.h.in@, which is why it includes the 'OK'+-- constructor. The 'OK' constructor will never be returned in an error+-- case.+data Error+  = OK -- ^ This will never be returned as an error.+  | CryptoError+  | InvalidDigits+  | PrintfError+  | InvalidHex+  | TooSmallBuffer+  | InvalidOtp+  | ReplayedOtp+  | BadPassword+  | InvalidCounter+  | InvalidTimestamp+  | NoSuchFile+  | UnknownUser+  | FileSeekError+  | FileCreateError+  | FileLockError+  | FileRenameError+  | FileUnlinkError+  | TimeError+  | StrcmpError+  | InvalidBase32+  | Base32Overflow+  | MallocError+  | FileFlushError+  | FileSyncError+  | FileCloseError+  | UnknownError+  deriving (Eq, Show)++-- | A type representing 'Base32' encoded 'ByteString's.+newtype Base32 = UnsafeBase32 { unBase32 :: ByteString }+  deriving (Eq, Ord, Show)++pattern Base32 a = UnsafeBase32 a++-- | This function should only be called with the return value of @liboath@+-- library calls.+fromCInt :: C.CInt -> Error+fromCInt i = case i of+  0   -> OK+  -1  -> CryptoError+  -2  -> InvalidDigits+  -3  -> PrintfError+  -4  -> InvalidHex+  -5  -> TooSmallBuffer+  -6  -> InvalidOtp+  -7  -> ReplayedOtp+  -8  -> BadPassword+  -9  -> InvalidCounter+  -10 -> InvalidTimestamp+  -11 -> NoSuchFile+  -12 -> UnknownUser+  -13 -> FileSeekError+  -14 -> FileCreateError+  -15 -> FileLockError+  -16 -> FileRenameError+  -17 -> FileUnlinkError+  -18 -> TimeError+  -19 -> StrcmpError+  -20 -> InvalidBase32+  -21 -> Base32Overflow+  -22 -> MallocError+  -23 -> FileFlushError+  -24 -> FileSyncError+  -25 -> FileCloseError+  _   -> UnknownError++++-- C Bindings++_OATH_OK :: C.CInt+_OATH_OK = 0++oath_init :: IO C.CInt+oath_init = [C.exp|int { oath_init() }|]++oath_done :: IO C.CInt+oath_done = [C.exp|int { oath_done() }|]++oath_check_version :: ByteString -> IO C.CString+oath_check_version minVersion =+    [C.exp|const char * { oath_check_version($bs-ptr:minVersion) }|]++oath_strerror :: C.CInt -> IO C.CString+oath_strerror err = [C.exp|const char * { oath_strerror($(int err)) }|]++oath_base32_decode :: C.CString -> C.CSize -> Ptr C.CString -> Ptr C.CSize -> IO C.CInt+oath_base32_decode in_ inlen out outlen =+    [C.exp|int {+        oath_base32_decode($(const char * in_), $(size_t inlen), $(char ** out), $(size_t * outlen))+    }|]++oath_base32_encode :: C.CString -> C.CSize -> Ptr C.CString -> Ptr C.CSize -> IO C.CInt+oath_base32_encode in_ inlen out outlen =+    [C.exp|int {+        oath_base32_encode($(const char * in_), $(size_t inlen), $(char ** out), $(size_t * outlen))+    }|]++oath_totp_generate+    :: C.CString -> C.CSize -> C.CTime -> C.CUInt -> C.CTime -> C.CUInt -> C.CString -> IO C.CInt+oath_totp_generate secret secretLen now timeStepSize startOffset digits outputOtp =+    [C.exp|int {+        oath_totp_generate(+            $(const char * secret),+            $(size_t secretLen),+            $(time_t now),+            $(unsigned int timeStepSize),+            $(time_t startOffset),+            $(unsigned int digits),+            $(char * outputOtp)+        )+    }|]
+ test/Spec.hs view
@@ -0,0 +1,2 @@+main :: IO ()+main = putStrLn "Test suite not yet implemented"