x509-util-1.6.1: src/Certificate.hs
{-# LANGUAGE DeriveDataTypeable, OverloadedStrings #-}
import Data.Either
import qualified Data.ByteString.Lazy as L
import qualified Data.ByteString.Lazy.Char8 as LC
import qualified Data.ByteString as B
import Data.X509
import qualified Data.X509 as X509
import Data.List (find)
import Data.PEM (pemParseBS, pemContent, pemName)
import System.Console.GetOpt
import System.Environment
import Control.Monad
import Control.Applicative ((<$>))
import Data.Maybe
import System.Exit
import System.X509
import Data.X509.CertificateStore
import Data.X509.Validation
import Data.Hourglass
-- for signing/verifying certificate
import Crypto.Hash
import qualified Crypto.PubKey.RSA as RSA
import qualified Crypto.PubKey.RSA.PKCS15 as RSA
import qualified Crypto.PubKey.DSA as DSA
import Data.ASN1.Encoding
import Data.ASN1.BinaryEncoding
import Data.ASN1.Types
import Data.ASN1.BitArray
import Data.X509.Memory
import Text.Printf
import Numeric
formatValidity (start,end) = p start ++ " to " ++ p end
where p t = timePrint ("YYYY-MM-DD H:MI:S" :: String) t
hexdump :: B.ByteString -> String
hexdump bs = concatMap hex $ B.unpack bs
where hex n
| n > 0xa = showHex n ""
| otherwise = "0" ++ showHex n ""
hexdump' = hexdump
showDN (X509.DistinguishedName dn) = mapM_ toStr dn
where toStr (oid, cs@(ASN1CharacterString e t)) =
putStrLn (" " ++ key ++ ": " ++ value)
where key = show oid
value = case asn1CharacterToString cs of
Nothing -> show e ++ " " ++ show t ++ " (decoding to string failed)"
Just s -> show s ++ " (encoding : " ++ show e ++ ")"
showExts es@(Extensions Nothing) = do
return ()
showExts es@(Extensions (Just exts)) = do
mapM_ showExt exts
putStrLn "known extensions decoded: "
showKnownExtension "basic-constraint" (X509.extensionGetE es :: Maybe (Either String X509.ExtBasicConstraints))
showKnownExtension "key-usage" (X509.extensionGetE es :: Maybe (Either String X509.ExtKeyUsage))
showKnownExtension "extended-key-usage" (X509.extensionGetE es :: Maybe (Either String X509.ExtExtendedKeyUsage))
showKnownExtension "subject-key-id" (X509.extensionGetE es :: Maybe (Either String X509.ExtSubjectKeyId))
showKnownExtension "subject-alt-name" (X509.extensionGetE es :: Maybe (Either String X509.ExtSubjectAltName))
showKnownExtension "authority-key-id" (X509.extensionGetE es :: Maybe (Either String X509.ExtAuthorityKeyId))
where
showExt (ExtensionRaw oid critical asn1) = do
putStrLn (" OID: " ++ show oid ++ " critical: " ++ show critical)
showASN1 8 asn1
showKnownExtension _ Nothing = return ()
showKnownExtension n (Just (Left e)) = putStrLn (" " ++ n ++ ": ERROR: " ++ show e)
showKnownExtension _ (Just (Right e)) = putStrLn (" " ++ show e)
showCertSmall :: SignedCertificate -> IO ()
showCertSmall signedCert = do
putStrLn "subject: "
showDN $ X509.certSubjectDN cert
putStrLn ("valid: " ++ formatValidity (X509.certValidity cert))
case X509.certPubKey cert of
X509.PubKeyRSA pubkey -> printf "public key: RSA (%d bits)\n" (RSA.public_size pubkey * 8)
X509.PubKeyDSA pubkey -> printf "public key: DSA\n"
X509.PubKeyUnknown oid ws -> printf "public key: unknown: %s\n" (show oid)
pk -> printf "public key: %s\n" (show pk)
where
signed = X509.getSigned signedCert
--sigalg = X509.signedAlg signed
--sigbits = X509.signedSignature signed
cert = X509.signedObject signed
showCert :: SignedCertificate -> IO ()
showCert signedCert = do
putStrLn ("version: " ++ show (X509.certVersion cert))
putStrLn ("serial: " ++ show (X509.certSerial cert))
putStrLn ("sigalg: " ++ show (X509.certSignatureAlg cert))
putStrLn "issuer:"
showDN $ X509.certIssuerDN cert
putStrLn "subject:"
showDN $ X509.certSubjectDN cert
putStrLn ("valid: " ++ formatValidity (X509.certValidity cert))
case X509.certPubKey cert of
X509.PubKeyRSA pubkey -> do
putStrLn "public key RSA:"
printf " len : %d bits\n" (RSA.public_size pubkey * 8)
printf " modulus: %x\n" (RSA.public_n pubkey)
printf " e : %x\n" (RSA.public_e pubkey)
X509.PubKeyDSA pubkey -> do
let params = DSA.public_params pubkey
putStrLn "public key DSA:"
printf " pub : %x\n" (DSA.public_y pubkey)
printf " p : %d\n" (DSA.params_p params)
printf " q : %x\n" (DSA.params_q params)
printf " g : %x\n" (DSA.params_g params)
X509.PubKeyUnknown oid ws -> do
printf "public key unknown: %s\n" (show oid)
printf " raw bytes: %s\n" (show ws)
pk ->
printf "public key: %s\n" (show pk)
case X509.certExtensions cert of
(Extensions Nothing) -> return ()
(Extensions (Just es)) -> putStrLn "extensions:" >> showExts (X509.certExtensions cert)
putStrLn ("sigAlg: " ++ show sigalg)
putStrLn ("sig: " ++ show sigbits)
where
signed = X509.getSigned signedCert
sigalg = X509.signedAlg signed
sigbits = X509.signedSignature signed
cert = X509.signedObject signed
showRSAKey :: RSA.PrivateKey -> String
showRSAKey privkey = unlines
[ "len-modulus: " ++ (show $ RSA.public_size pubkey)
, "modulus: " ++ (show $ RSA.public_n pubkey)
, "public exponent: " ++ (show $ RSA.public_e pubkey)
, "private exponent: " ++ (show $ RSA.private_d privkey)
, "p1: " ++ (show $ RSA.private_p privkey)
, "p2: " ++ (show $ RSA.private_q privkey)
, "exp1: " ++ (show $ RSA.private_dP privkey)
, "exp2: " ++ (show $ RSA.private_dQ privkey)
, "coefficient: " ++ (show $ RSA.private_qinv privkey)
]
where pubkey = RSA.private_pub privkey
showDSAKey :: DSA.PrivateKey -> String
showDSAKey (DSA.PrivateKey params privnum) = unlines
[ "priv " ++ (printf "%x" $ privnum)
, "p: " ++ (printf "%x" $ DSA.params_p params)
, "q: " ++ (printf "%x" $ DSA.params_q params)
, "g: " ++ (printf "%x" $ DSA.params_g params)
]
showASN1 :: Int -> [ASN1] -> IO ()
showASN1 at = prettyPrint at
where
indent n = putStr (replicate n ' ')
prettyPrint n [] = return ()
prettyPrint n (x@(Start _) : xs) = indent n >> p x >> putStrLn "" >> prettyPrint (n+1) xs
prettyPrint n (x@(End _) : xs) = indent (n-1) >> p x >> putStrLn "" >> prettyPrint (n-1) xs
prettyPrint n (x : xs) = indent n >> p x >> putStrLn "" >> prettyPrint n xs
p (Boolean b) = putStr ("bool: " ++ show b)
p (IntVal i) = putStr ("int: " ++ showHex i "")
p (BitString bits) = putStr ("bitstring: " ++ (hexdump $ bitArrayGetData bits))
p (OctetString bs) = putStr ("octetstring: " ++ hexdump bs)
p (Null) = putStr "null"
p (OID is) = putStr ("OID: " ++ show is)
p (Real d) = putStr "real"
p (Enumerated _) = putStr "enum"
p (Start Sequence) = putStr "{"
p (End Sequence) = putStr "}"
p (Start Set) = putStr "["
p (End Set) = putStr "]"
p (Start (Container x y)) = putStr ("< " ++ show x ++ " " ++ show y)
p (End (Container x y)) = putStr ("> " ++ show x ++ " " ++ show y)
p (ASN1String cs) = putCS cs
p (ASN1Time TimeUTC time tz) = putStr ("utctime: " ++ show time)
p (ASN1Time TimeGeneralized time tz) = putStr ("generalizedtime: " ++ show time)
p (Other tc tn x) = putStr ("other(" ++ show tc ++ "," ++ show tn ++ ")")
putCS (ASN1CharacterString UTF8 t) = putStr ("utf8string:" ++ show t)
putCS (ASN1CharacterString Numeric bs) = putStr "numericstring:"
putCS (ASN1CharacterString Printable t) = putStr ("printablestring: " ++ show t)
putCS (ASN1CharacterString T61 bs) = putStr ("t61string:" ++ show bs)
putCS (ASN1CharacterString VideoTex bs) = putStr "videotexstring:"
putCS (ASN1CharacterString IA5 bs) = putStr ("ia5string:" ++ show bs)
putCS (ASN1CharacterString Graphic bs) = putStr "graphicstring:"
putCS (ASN1CharacterString Visible bs) = putStr "visiblestring:"
putCS (ASN1CharacterString General bs) = putStr "generalstring:"
putCS (ASN1CharacterString UTF32 t) = putStr ("universalstring:" ++ show t)
putCS (ASN1CharacterString Character bs) = putStr "characterstring:"
putCS (ASN1CharacterString BMP t) = putStr ("bmpstring: " ++ show t)
data X509Opts =
DumpedRaw
| DumpedText
| ShowHash
| Validate
| ValidationHost String
| Help
deriving (Show,Eq)
readPEMFile file = do
content <- B.readFile file
return $ either error id $ pemParseBS content
readSignedObject file = do
content <- B.readFile file
return $ either error (map (X509.decodeSignedObject . pemContent)) $ pemParseBS content
doCertMain opts files = do
when (Help `elem` opts) $ do
putStrLn $ usageInfo "usage: x509-util cert [options] <certificates>" optionsCert
exitSuccess
objs <- readSignedObject (head files)
forM_ objs $ \o ->
case o of
Left err -> error ("decoding Certificate failed: " ++ show err)
Right signed -> do
showCert signed
when (ShowHash `elem` opts) $ hashCert signed
when (Validate `elem` opts) $ do
let cc = CertificateChain (rights objs)
store <- getSystemCertificateStore
failed <- validate HashSHA1 defaultHooks validationChecks store (exceptionValidationCache [])
(maybe ("", "") (\f -> (f,"")) fqhn) cc
if failed /= []
then putStrLn ("validation failed: " ++ show failed)
else putStrLn "validation success"
where
hashCert signedCert = do
putStrLn ("subject(MD5) old: " ++ hexdump' (X509.hashDN_old subject))
putStrLn ("issuer(MD5) old: " ++ hexdump' (X509.hashDN_old issuer))
putStrLn ("subject(SHA1): " ++ hexdump' (X509.hashDN subject))
putStrLn ("issuer(SHA1): " ++ hexdump' (X509.hashDN issuer))
where
subject = X509.certSubjectDN cert
issuer = X509.certIssuerDN cert
cert = X509.signedObject $ X509.getSigned signedCert
validationChecks = defaultChecks { checkExhaustive = True, checkFQHN = isJust fqhn }
fqhn = foldl accHost Nothing opts
accHost Nothing (ValidationHost h) = Just h
accHost a _ = a
doCRLMain opts files = do
readSignedObject (head files) >>= \objs -> forM_ objs $ \o ->
case o of
Left err -> error ("decoding CRL failed: " ++ show err)
Right signed -> do
putStrLn $ show $ getCRL signed
doASN1Main files = do
pem <- readPEMFile (head files)
forM_ pem $ \p ->
case decodeASN1' BER $ pemContent p of
Left err -> error ("decoding ASN1 failed: " ++ show err)
Right asn1 -> showASN1 0 asn1
doKeyMain files = do
pems <- readPEMFile (head files)
forM_ pems $ \pem -> do
let content = either (error . show) id $ decodeASN1' BER (pemContent pem)
privkey = pemToKey [] pem
case privkey of
[Just (X509.PrivKeyRSA k)] ->
putStrLn "RSA KEY" >> putStrLn (showRSAKey k)
[Just (X509.PrivKeyDSA k)] ->
putStrLn "DSA KEY" >> putStrLn (showDSAKey k)
_ -> error "private key unknown"
doSystemMain _ = do
store <- getSystemCertificateStore
let certs = listCertificates store
mapM_ showCertSmall certs
putStrLn $ replicate 72 '='
putStrLn $ show (length certs) ++ " certificates loaded"
optionsCert =
[ Option [] ["hash"] (NoArg ShowHash) "output certificate hash"
, Option ['v'] ["validate"] (NoArg Validate) "validate certificate"
, Option [] ["validation-host"] (ReqArg ValidationHost "host") "validation host use for validation"
, Option ['h'] ["help"] (NoArg Help) "show help"
]
certMain = getoptMain optionsCert $ \o n -> doCertMain o n
crlMain = getoptMain [] $ \o n -> doCRLMain o n
keyMain = getoptMain [] $ \o n -> doKeyMain n
asn1Main = getoptMain [] $ \o n -> doASN1Main n
systemMain = getoptMain [] $ \o n -> doSystemMain n
getoptMain :: [OptDescr a] -> ([a] -> [String] -> IO ()) -> [String] -> IO ()
getoptMain opts f as =
case getOpt Permute opts as of
(o,n,[]) -> f o n
(_,_,err) -> error (show err)
usage = do
putStrLn "usage: x509-util <cmd>"
putStrLn " key : process public key"
putStrLn " cert: process X509 certificate"
putStrLn " crl : process CRL certificate"
putStrLn " asn1: show file asn1"
putStrLn " system: show system certificates"
main = do
args <- getArgs
case args of
[] -> usage
"x509":as -> certMain as
"cert":as -> certMain as
"key":as -> keyMain as
"crl":as -> crlMain as
"asn1":as -> asn1Main as
"system":as -> systemMain as
_ -> usage