asn1-parse-0.9.5/Data/0000755000000000000000000000000013503676037012550 5ustar0000000000000000asn1-parse-0.9.5/Data/ASN1/0000755000000000000000000000000013503676037013252 5ustar0000000000000000asn1-parse-0.9.5/Data/ASN1/Parse.hs0000644000000000000000000001223013503676037014656 0ustar0000000000000000-- | -- Module : Data.ASN1.Parse -- License : BSD-style -- Maintainer : Vincent Hanquez -- Stability : experimental -- Portability : unknown -- -- A parser combinator for ASN1 Stream. {-# LANGUAGE GeneralizedNewtypeDeriving #-} {-# LANGUAGE CPP #-} module Data.ASN1.Parse ( ParseASN1 -- * run , runParseASN1State , runParseASN1 , throwParseError -- * combinators , onNextContainer , onNextContainerMaybe , getNextContainer , getNextContainerMaybe , getNext , getNextMaybe , hasNext , getObject , getMany ) where import Data.ASN1.Types import Data.ASN1.Stream import Control.Applicative import Control.Arrow (first) import Control.Monad (liftM2) #if MIN_VERSION_base(4,9,0) import Control.Monad.Fail #endif newtype ParseASN1 a = P { runP :: [ASN1] -> Either String (a, [ASN1]) } instance Functor ParseASN1 where fmap f m = P (either Left (Right . first f) . runP m) instance Applicative ParseASN1 where pure a = P $ \s -> Right (a, s) (<*>) mf ma = P $ \s -> case runP mf s of Left err -> Left err Right (f, s2) -> case runP ma s2 of Left err -> Left err Right (a, s3) -> Right (f a, s3) instance Monad ParseASN1 where return a = pure a (>>=) m1 m2 = P $ \s -> case runP m1 s of Left err -> Left err Right (a, s2) -> runP (m2 a) s2 instance Alternative ParseASN1 where empty = P $ \_ -> Left "empty Alternative" (<|>) m1 m2 = P $ \s -> case runP m1 s of Left _ -> runP m2 s Right (a, s2) -> Right (a, s2) #if MIN_VERSION_base(4,9,0) instance MonadFail ParseASN1 where fail = throwParseError #endif get :: ParseASN1 [ASN1] get = P $ \stream -> Right (stream, stream) put :: [ASN1] -> ParseASN1 () put stream = P $ \_ -> Right ((), stream) -- | throw a parse error throwParseError :: String -> ParseASN1 a throwParseError s = P $ \_ -> Left s -- | run the parse monad over a stream and returns the result and the remaining ASN1 Stream. runParseASN1State :: ParseASN1 a -> [ASN1] -> Either String (a,[ASN1]) runParseASN1State f s = runP f s -- | run the parse monad over a stream and returns the result. -- -- If there's still some asn1 object in the state after calling f, -- an error will be raised. runParseASN1 :: ParseASN1 a -> [ASN1] -> Either String a runParseASN1 f s = case runP f s of Left err -> Left err Right (o, []) -> Right o Right (_, er) -> Left ("runParseASN1: remaining state " ++ show er) -- | get next object getObject :: ASN1Object a => ParseASN1 a getObject = do l <- get case fromASN1 l of Left err -> throwParseError err Right (a,l2) -> put l2 >> return a -- | get next element from the stream getNext :: ParseASN1 ASN1 getNext = do list <- get case list of [] -> throwParseError "empty" (h:l) -> put l >> return h -- | get many elements until there's nothing left getMany :: ParseASN1 a -> ParseASN1 [a] getMany getOne = do next <- hasNext if next then liftM2 (:) getOne (getMany getOne) else return [] -- | get next element from the stream maybe getNextMaybe :: (ASN1 -> Maybe a) -> ParseASN1 (Maybe a) getNextMaybe f = do list <- get case list of [] -> return Nothing (h:l) -> let r = f h in do case r of Nothing -> put list Just _ -> put l return r -- | get next container of specified type and return all its elements getNextContainer :: ASN1ConstructionType -> ParseASN1 [ASN1] getNextContainer ty = do list <- get case list of [] -> throwParseError "empty" (h:l) | h == Start ty -> do let (l1, l2) = getConstructedEnd 0 l put l2 >> return l1 | otherwise -> throwParseError "not an expected container" -- | run a function of the next elements of a container of specified type onNextContainer :: ASN1ConstructionType -> ParseASN1 a -> ParseASN1 a onNextContainer ty f = getNextContainer ty >>= either throwParseError return . runParseASN1 f -- | just like getNextContainer, except it doesn't throw an error if the container doesn't exists. getNextContainerMaybe :: ASN1ConstructionType -> ParseASN1 (Maybe [ASN1]) getNextContainerMaybe ty = do list <- get case list of [] -> return Nothing (h:l) | h == Start ty -> do let (l1, l2) = getConstructedEnd 0 l put l2 >> return (Just l1) | otherwise -> return Nothing -- | just like onNextContainer, except it doesn't throw an error if the container doesn't exists. onNextContainerMaybe :: ASN1ConstructionType -> ParseASN1 a -> ParseASN1 (Maybe a) onNextContainerMaybe ty f = do n <- getNextContainerMaybe ty case n of Just l -> either throwParseError (return . Just) $ runParseASN1 f l Nothing -> return Nothing -- | returns if there's more elements in the stream. hasNext :: ParseASN1 Bool hasNext = not . null <$> get asn1-parse-0.9.5/LICENSE0000644000000000000000000000273113503676037012707 0ustar0000000000000000Copyright (c) 2010-2013 Vincent Hanquez All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the author nor the names of his contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. asn1-parse-0.9.5/Setup.hs0000644000000000000000000000005613503676037013334 0ustar0000000000000000import Distribution.Simple main = defaultMain asn1-parse-0.9.5/asn1-parse.cabal0000644000000000000000000000172013544200263014622 0ustar0000000000000000Name: asn1-parse Version: 0.9.5 Description: Simple monadic parser for ASN1 stream types, when ASN1 pattern matching is not convenient. License: BSD3 License-file: LICENSE Copyright: Vincent Hanquez Author: Vincent Hanquez Maintainer: Vincent Hanquez Synopsis: Simple monadic parser for ASN1 stream types. Build-Type: Simple Category: Data stability: experimental Cabal-Version: >=1.6 Homepage: https://github.com/vincenthz/hs-asn1 Library Build-Depends: base >= 3 && < 5 , bytestring , asn1-types >= 0.3 && < 0.4 , asn1-encoding >= 0.9 Exposed-modules: Data.ASN1.Parse ghc-options: -Wall source-repository head type: git location: https://github.com/vincenthz/hs-asn1 subdir: parse