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| pycrypto |
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| {-# LANGUAGE DeriveAnyClass #-} | ||
| {-# LANGUAGE DeriveGeneric #-} | ||
| {-# LANGUAGE GADTs #-} | ||
| {-# LANGUAGE OverloadedStrings #-} | ||
| {-# LANGUAGE ScopedTypeVariables #-} | ||
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| module License | ||
| (readLicense) where | ||
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| import Paths_toodles | ||
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| import Control.Exception | ||
| import Data.Aeson | ||
| import Data.Aeson.Encode.Pretty | ||
| import qualified Data.ByteString.Base64.Lazy as B64 | ||
| import qualified Data.ByteString.Lazy.Char8 as LB | ||
| import Data.Maybe | ||
| import Data.Text (Text) | ||
| import qualified Data.Text as T | ||
| import Data.Time.Clock.POSIX | ||
| import GHC.Generics | ||
| import System.Directory | ||
| import System.Process | ||
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| data UserTier | ||
| = BadLicense | ||
| | NoLiscense | ||
| | Individual | ||
| | Commercial | ||
| deriving (Show, Eq, Ord, Generic, ToJSON, FromJSON) | ||
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| data License = License { | ||
| payload :: ToodlesLicense, | ||
| encoded :: Text, | ||
| payloadSignature :: Text | ||
| } deriving (Generic, FromJSON, ToJSON, Show) | ||
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| data ToodlesLicense = ToodlesLicense | ||
| { validStart :: Integer | ||
| , validEnd :: Integer | ||
| , email :: Text | ||
| , reference :: Text | ||
| , product :: Text | ||
| } deriving (Generic, FromJSON, ToJSON, Show) | ||
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| readLicense :: FilePath -> FilePath -> IO (Either String UserTier) | ||
| readLicense publicKeyPath licensePath = do | ||
| licenseExists <- doesFileExist licensePath | ||
| putStrLn licensePath | ||
| if not licenseExists then | ||
| return $ Right NoLiscense | ||
| else do | ||
| parsedContents <- eitherDecodeFileStrict licensePath | ||
| either (return . Left) (isLicenseValid publicKeyPath) parsedContents | ||
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| isLicenseValid :: FilePath -> License -> IO (Either String UserTier) | ||
| isLicenseValid publicKeyPath (License _ encodedPayload sig) = do | ||
| dataDir <- getDataDir | ||
| now <- ((* 1000) . round) `fmap` getPOSIXTime | ||
| let args = | ||
| [ dataDir ++ "/verify.py" | ||
| , publicKeyPath | ||
| , T.unpack sig | ||
| , T.unpack encodedPayload | ||
| ] | ||
| decodedPayload = | ||
| decode (B64.decodeLenient . LB.pack $ T.unpack encodedPayload) | ||
| result <- | ||
| catch | ||
| (readProcess "python" args "") | ||
| (\(e :: IOException) -> | ||
| return $ displayException e) | ||
| return $ | ||
| let validated = ("True" == (T.strip $ T.pack result)) | ||
| in if validated && (maybe 0 validEnd decodedPayload >= now) | ||
| then Right Commercial | ||
| else Left "Invalid license file" |
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| Original file line number | Diff line number | Diff line change |
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| -----BEGIN PUBLIC KEY----- | ||
| MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvrVba8B99vGOUvHUSNSv | ||
| T6idquIYp3CdhRww2VckyrVwqCeFNePm6EDhHAsG4SVd94HQDpZdJd/Oohrqlt1I | ||
| UccaPse4W3J9nMJx82H9BK91VuFWLKvPAEbeQn+uStRsSeAPeIBVo+y4i5cYPqdV | ||
| eN6me2r79/cNwD21auTGTsTLJzY+RaiRA+pnmJuXvxhMjyER/GUn6hikJWrSF+6e | ||
| 9txokiJR9r2hCv2JQqYHWp/moF/nd/25aTrGEgiWz+RGY15P4UUk1Ju1DmNUQA4/ | ||
| RmOe1XnXw0X8aoKhuhTjZw5COsq5uHTq7tqC/CemQpldsETqj19XYO3TNi7ojmfa | ||
| EQIDAQAB | ||
| -----END PUBLIC KEY----- |
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| #!/usr/bin/env python | ||
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| import sys | ||
| from Crypto.PublicKey import RSA | ||
| from Crypto.Signature import PKCS1_v1_5 | ||
| from Crypto.Hash import SHA512 | ||
| from base64 import b64decode, b64encode | ||
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| def verify_sign(public_key_loc, signature, data): | ||
| pub_key = open(public_key_loc, "r").read() | ||
| rsakey = RSA.importKey(pub_key) | ||
| signer = PKCS1_v1_5.new(rsakey) | ||
| digest = SHA512.new() | ||
| digest.update(data) | ||
| if signer.verify(digest, b64decode(signature)): | ||
| return True | ||
| return False | ||
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| if __name__ == "__main__": | ||
| print(verify_sign(sys.argv[1], sys.argv[2], sys.argv[3])) | ||
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