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|
{-# LANGUAGE CPP #-}
{-# LANGUAGE TupleSections #-}
{-# LANGUAGE ViewPatterns #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE DeriveFunctor #-}
{-# LANGUAGE DoAndIfThenElse #-}
{-# LANGUAGE NoPatternGuards #-}
module KeyRing
( runKeyRing
, StreamInfo(..)
, Access(..)
, KeyFilter(..)
, KeyRingOperation(..)
, KikiResult(..)
, KikiCondition(..)
, KikiReportAction(..)
, errorString
, reportString
, KeyRingRuntime(..)
, InputFile(..)
, FileType(..)
, importPublic
, importSecret
, subkeysOnly
, PacketUpdate(..)
, noManip
, KeyDB
, KeyData(..)
, SubKey(..)
, packet
, isKey
, derRSA
, derToBase32
, backsig
, filterMatches
, flattenKeys
, flattenTop
, guardAuthentic
, Hosts.Hosts
, isCryptoCoinKey
, keyflags
, locations
, matchpr
, parseSpec
, parseUID
, pkcs8
, RSAPublicKey(..)
, rsaKeyFromPacket
, secretToPublic
, selectPublicKey
, selectSecretKey
, UserIDRecord(..)
, usage
, usageString
, walletImportFormat
, writePEM
) where
import System.Environment
import Control.Monad
import Data.Maybe
import Data.Either
import Data.Char
import Data.Ord
import Data.List
import Data.OpenPGP
import Data.Functor
import Data.Monoid
import Data.Tuple ( swap )
import Data.Bits ( (.|.) )
import Control.Applicative ( Applicative, pure, liftA2, (<*>) )
import System.Directory ( getHomeDirectory, doesFileExist, createDirectoryIfMissing )
import Control.Arrow ( first, second )
import Data.OpenPGP.Util (verify,fingerprint,decryptSecretKey,pgpSign)
import Data.ByteString.Lazy ( ByteString )
import Text.Show.Pretty as PP ( ppShow )
import Data.Binary {- decode, decodeOrFail -}
import ControlMaybe ( handleIO_ )
import Data.ASN1.Types ( toASN1, ASN1Object, fromASN1
, ASN1(Start,End,IntVal,OID,BitString), ASN1ConstructionType(Sequence) )
import Data.ASN1.BitArray ( BitArray(..), toBitArray )
import Data.ASN1.Encoding ( encodeASN1, encodeASN1', decodeASN1, decodeASN1' )
import Data.ASN1.BinaryEncoding ( DER(..) )
import Data.Time.Clock.POSIX ( getPOSIXTime )
import qualified Data.Map as Map
import qualified Data.ByteString.Lazy as L ( unpack, pack, null, readFile, writeFile
, ByteString, toChunks )
import qualified Data.ByteString as S ( ByteString, unpack, splitAt, concat, cons, spanEnd, hGetContents, readFile)
import qualified Crypto.Types.PubKey.ECC as ECC
import qualified Codec.Binary.Base32 as Base32
import qualified Codec.Binary.Base64 as Base64
import qualified Crypto.Hash.SHA1 as SHA1
import qualified Data.Text as T ( Text, unpack, pack,
strip, reverse, drop, break, dropAround )
import qualified System.Posix.Types as Posix
import System.Posix.Files ( modificationTime, getFileStatus
, setFileCreationMask, setFileTimes )
import System.FilePath ( takeDirectory )
import System.IO (hPutStrLn,withFile,IOMode(..))
import Data.IORef
import System.Posix.IO ( fdToHandle )
import qualified Data.Traversable as Traversable ( mapM )
import Data.Traversable ( sequenceA )
#if ! MIN_VERSION_base(4,6,0)
import GHC.Exts ( Down(..) )
#endif
import Network.Socket -- (SockAddr)
import qualified Data.ByteString.Lazy.Char8 as Char8
import qualified Hosts
import qualified CryptoCoins
import Base58
import FunctorToMaybe
import DotLock
import ProcessUtils (systemEnv, ExitCode(ExitFailure, ExitSuccess) )
-- DER-encoded elliptic curve ids
-- nistp256_id = 0x2a8648ce3d030107
secp256k1_id :: Integer
secp256k1_id = 0x2b8104000a
-- "\x2a\x86\x48\xce\x3d\x03\x01\x07"
{- OID Curve description Curve name
----------------------------------------------------------------
1.2.840.10045.3.1.7 NIST Curve P-256 [FIPS 186-2] "NIST P-256"
1.3.132.0.34 NIST Curve P-384 [FIPS 186-2] "NIST P-384"
1.3.132.0.35 NIST Curve P-521 [FIPS 186-2] "NIST P-521"
Implementations MUST implement "NIST P-256", "NIST P-384" and "NIST
P-521". The hexadecimal representation used in the public and
private key encodings are:
Curve Name Len Hexadecimal representation of the OID
----------------------------------------------------------------
"NIST P-256" 8 0x2A, 0x86, 0x48, 0xCE, 0x3D, 0x03, 0x01, 0x07
"NIST P-384" 6 0x05, 0x2B, 0x81, 0x04, 0x00, 0x22
"NIST P-521" 6 0x05, 0x2B, 0x81, 0x04, 0x00, 0x23
-}
data HomeDir =
HomeDir { homevar :: String
, appdir :: String
, optfile_alts :: [String]
}
home :: HomeDir
home = HomeDir
{ homevar = "GNUPGHOME"
, appdir = ".gnupg"
, optfile_alts = ["keys.conf","gpg.conf-2","gpg.conf"]
}
-- TODO: Pipe Fd Fd
data InputFile = HomeSec
| HomePub
| ArgFile FilePath
| FileDesc Posix.Fd
deriving (Eq,Ord)
-- type UsageTag = String
type Initializer = String
type PassWordFile = InputFile
-- TODO: This should become a simple enum.
-- The parameter to PEMFile will be subsumed by
-- the KF_Match fill/spill KeyFilter styles. The parameter
-- to KeyRingFile will be subsumbed by kPassphrases
data FileType = KeyRingFile (Maybe PassWordFile)
| PEMFile
| WalletFile -- (Maybe UsageTag)
| Hosts
data Access = AutoAccess -- ^ secret or public as appropriate based on existing content
| Sec -- ^ secret information
| Pub -- ^ public information
data KeyFilter = KF_None -- ^ No keys will be imported.
| KF_Match String -- ^ Only the key that matches the spec will be imported.
| KF_Subkeys -- ^ Subkeys will be imported if their owner key is
-- already in the ring. TODO: Even if their signatures
-- are bad?
| KF_Authentic -- ^ Keys are imported if they belong to an authenticated
-- identity (signed or self-authenticating).
| KF_All -- ^ All keys will be imported.
data StreamInfo = StreamInfo
{ access :: Access
, typ :: FileType
, fill :: KeyFilter
, spill :: KeyFilter -- ^ TODO: currently only respected for PEMFile.
-- Note that this is currently treated as a boolean
-- flag. KF_None means the file is not spillable
-- and anything else means that it is.
, initializer :: Maybe String }
spillable :: StreamInfo -> Bool
spillable (spill -> KF_None) = False
spillable _ = True
isMutable :: StreamInfo -> Bool
isMutable (fill -> KF_None) = False
isMutable _ = True
isring :: FileType -> Bool
isring (KeyRingFile {}) = True
isring _ = False
ispem :: FileType -> Bool
ispem (PEMFile {}) = True
ispem _ = False
pwfile :: FileType -> Maybe PassWordFile
pwfile (KeyRingFile f) = f
pwfile _ = Nothing
iswallet :: FileType -> Bool
iswallet (WalletFile {}) = True
iswallet _ = False
usageFromFilter :: MonadPlus m => KeyFilter -> m String
usageFromFilter (KF_Match usage) = return usage
usageFromFilter _ = mzero
data KeyRingRuntime = KeyRingRuntime
{ rtPubring :: FilePath
, rtSecring :: FilePath
, rtGrip :: Maybe String
, rtWorkingKey :: Maybe Packet
, rtKeyDB :: KeyDB
, rtRingAccess :: Map.Map FilePath Access
}
-- | TODO: Packet Update should have deletion action
-- and any other kind of roster-entry level
-- action.
data PacketUpdate = InducerSignature String [SignatureSubpacket]
noManip :: KeyRingRuntime -> KeyData -> [PacketUpdate]
noManip _ _ = []
data KeyRingOperation = KeyRingOperation
{ kFiles :: Map.Map InputFile StreamInfo
, kManip :: KeyRingRuntime -> KeyData -> [PacketUpdate]--[KeyRingAddress PacketUpdate]
-- TODO: change kManip to [Transform]
, homeSpec :: Maybe String
}
resolveInputFile :: InputFileContext -> InputFile -> [FilePath]
resolveInputFile ctx = resolve
where
resolve HomeSec = return (homesecPath ctx)
resolve HomePub = return (homepubPath ctx)
resolve (ArgFile f) = return f
resolve _ = []
filesToLock ::
KeyRingOperation -> InputFileContext -> [FilePath]
filesToLock k ctx = do
(f,stream) <- Map.toList (kFiles k)
case fill stream of
KF_None -> []
_ -> resolveInputFile ctx f
-- kret :: a -> KeyRingOperation a
-- kret x = KeyRingOperation Map.empty Nothing (KeyRingAction x)
data RSAPublicKey = RSAKey MPI MPI deriving (Eq,Show)
data PKCS8_RSAPublicKey = RSAKey8 MPI MPI deriving Show
pkcs8 :: RSAPublicKey -> PKCS8_RSAPublicKey
pkcs8 (RSAKey n e) = RSAKey8 n e
instance ASN1Object RSAPublicKey where
-- PKCS #1 RSA Public Key
toASN1 (RSAKey (MPI n) (MPI e))
= \xs -> Start Sequence
: IntVal n
: IntVal e
: End Sequence
: xs
fromASN1 _ =
Left "fromASN1: RSAPublicKey: unexpected format"
instance ASN1Object PKCS8_RSAPublicKey where
-- PKCS #8 Public key data
toASN1 (RSAKey8 (MPI n) (MPI e))
= \xs -> Start Sequence
: Start Sequence
: OID [1,2,840,113549,1,1,1]
: End Sequence
: BitString (toBitArray bs 0)
: End Sequence
: xs
where
pubkey = [ Start Sequence, IntVal n, IntVal e, End Sequence ]
bs = encodeASN1' DER pubkey
fromASN1 (Start Sequence:IntVal modulus:IntVal pubexp:End Sequence:xs) =
Right (RSAKey8 (MPI modulus) (MPI pubexp) , xs)
fromASN1 (Start Sequence:Start Sequence:OID [1,2,840,113549,1,1,1]:End Sequence:BitString b:End Sequence:xs) =
case decodeASN1' DER bs of
Right as -> fromASN1 as
Left e -> Left ("fromASN1: RSAPublicKey: "++show e)
where
BitArray _ bs = b
fromASN1 _ =
Left "fromASN1: RSAPublicKey: unexpected format"
{-
RSAPrivateKey ::= SEQUENCE {
version Version,
modulus INTEGER, -- n
publicExponent INTEGER, -- e
privateExponent INTEGER, -- d
prime1 INTEGER, -- p
prime2 INTEGER, -- q
exponent1 INTEGER, -- d mod (p1) -- ?? d mod (p-1)
exponent2 INTEGER, -- d mod (q-1)
coefficient INTEGER, -- (inverse of q) mod p
otherPrimeInfos OtherPrimeInfos OPTIONAL
}
-}
data RSAPrivateKey = RSAPrivateKey
{ rsaN :: MPI
, rsaE :: MPI
, rsaD :: MPI
, rsaP :: MPI
, rsaQ :: MPI
, rsaDmodP1 :: MPI
, rsaDmodQminus1 :: MPI
, rsaCoefficient :: MPI
}
deriving Show
instance ASN1Object RSAPrivateKey where
toASN1 rsa@(RSAPrivateKey {})
= \xs -> Start Sequence
: IntVal 0
: mpiVal rsaN
: mpiVal rsaE
: mpiVal rsaD
: mpiVal rsaP
: mpiVal rsaQ
: mpiVal rsaDmodP1
: mpiVal rsaDmodQminus1
: mpiVal rsaCoefficient
: End Sequence
: xs
where mpiVal f = IntVal x where MPI x = f rsa
fromASN1 ( Start Sequence
: IntVal _ -- version
: IntVal n
: IntVal e
: IntVal d
: IntVal p
: IntVal q
: IntVal dmodp1
: IntVal dmodqminus1
: IntVal coefficient
: ys) =
Right ( privkey, tail $ dropWhile notend ys)
where
notend (End Sequence) = False
notend _ = True
privkey = RSAPrivateKey
{ rsaN = MPI n
, rsaE = MPI e
, rsaD = MPI d
, rsaP = MPI p
, rsaQ = MPI q
, rsaDmodP1 = MPI dmodp1
, rsaDmodQminus1 = MPI dmodqminus1
, rsaCoefficient = MPI coefficient
}
fromASN1 _ =
Left "fromASN1: RSAPrivateKey: unexpected format"
data KikiCondition a = KikiSuccess a
| FailedToLock [FilePath]
| BadPassphrase
| FailedToMakeSignature
| CantFindHome
| AmbiguousKeySpec FilePath
| CannotImportMasterKey
| NoWorkingKey
deriving ( Functor, Show )
instance FunctorToMaybe KikiCondition where
functorToMaybe (KikiSuccess a) = Just a
functorToMaybe _ = Nothing
instance Applicative KikiCondition where
pure a = KikiSuccess a
f <*> a =
case functorToEither f of
Right f -> case functorToEither a of
Right a -> pure (f a)
Left err -> err
Left err -> err
data KikiReportAction =
NewPacket String
| MissingPacket String
| ExportedSubkey
| GeneratedSubkeyFile
| NewWalletKey String
| YieldSignature
| YieldSecretKeyPacket String
| UnableToUpdateExpiredSignature
| WarnFailedToMakeSignature
| FailedExternal Int
| ExternallyGeneratedFile
| UnableToExport KeyAlgorithm String
| FailedFileWrite
| HostsDiff ByteString
deriving Show
uncamel :: String -> String
uncamel str = unwords $ firstWord ++ (toLower .: otherWords) ++ args
where
(.:) = fmap . fmap
( firstWord ,
otherWords ) = splitAt 1 ws
ws = camel >>= groupBy (\_ c -> isLower c)
( camel, args) = splitAt 1 $ words str
reportString :: KikiReportAction -> String
reportString x = uncamel $ show x
errorString :: KikiCondition a -> String
errorString (KikiSuccess {}) = "success"
errorString e = uncamel . show $ fmap (const ()) e
data KikiResult a = KikiResult
{ kikiCondition :: KikiCondition a
, kikiReport :: [ (FilePath, KikiReportAction) ]
}
keyPacket :: KeyData -> Packet
keyPacket (KeyData k _ _ _) = packet k
subkeyMappedPacket :: SubKey -> MappedPacket
subkeyMappedPacket (SubKey k _ ) = k
usage :: SignatureSubpacket -> Maybe String
usage (NotationDataPacket
{ human_readable = True
, notation_name = "usage@"
, notation_value = u
}) = Just u
usage _ = Nothing
makeInducerSig
:: Packet
-> Packet -> Packet -> [SignatureSubpacket] -> SignatureOver
-- torsig g topk wkun uid timestamp extras = todo
makeInducerSig topk wkun uid extras
= CertificationSignature (secretToPublic topk)
uid
(sigpackets 0x13
subpackets
subpackets_unh)
where
subpackets = -- implicit: [ SignatureCreationTimePacket (fromIntegral timestamp) ]
tsign
++ extras
subpackets_unh = [IssuerPacket (fingerprint wkun)]
tsign = if keykey wkun == keykey topk
then [] -- tsign doesnt make sense for self-signatures
else [ TrustSignaturePacket 1 120
, RegularExpressionPacket regex]
-- <[^>]+[@.]asdf\.nowhere>$
regex = "<[^>]+[@.]"++hostname++">$"
-- regex = username ++ "@" ++ hostname
-- username = "[a-zA-Z0-9.][-a-zA-Z0-9.]*\\$?" :: String
hostname = subdomain' pu ++ "\\." ++ topdomain' pu
pu = parseUID uidstr where UserIDPacket uidstr = uid
subdomain' = escape . T.unpack . uid_subdomain
topdomain' = escape . T.unpack . uid_topdomain
escape s = concatMap echar s
where
echar '|' = "\\|"
echar '*' = "\\*"
echar '+' = "\\+"
echar '?' = "\\?"
echar '.' = "\\."
echar '^' = "\\^"
echar '$' = "\\$"
echar '\\' = "\\\\"
echar '[' = "\\["
echar ']' = "\\]"
echar c = [c]
keyflags :: SignatureSubpacket -> Maybe PGPKeyFlags
keyflags flgs@(KeyFlagsPacket {}) =
Just . toEnum $
( bit 0x1 certify_keys
.|. bit 0x2 sign_data
.|. bit 0x4 encrypt_communication
.|. bit 0x8 encrypt_storage ) :: Maybe PGPKeyFlags
-- other flags:
-- split_key
-- authentication (ssh-client)
-- group_key
where
bit v f = if f flgs then v else 0
keyflags _ = Nothing
data PGPKeyFlags =
Special
| Vouch -- Signkey
| Sign
| VouchSign
| Communication
| VouchCommunication
| SignCommunication
| VouchSignCommunication
| Storage
| VouchStorage
| SignStorage
| VouchSignStorage
| Encrypt
| VouchEncrypt
| SignEncrypt
| VouchSignEncrypt
deriving (Eq,Show,Read,Enum)
usageString :: PGPKeyFlags -> String
usageString flgs =
case flgs of
Special -> "special"
Vouch -> "vouch" -- signkey
Sign -> "sign"
VouchSign -> "vouch-sign"
Communication -> "communication"
VouchCommunication -> "vouch-communication"
SignCommunication -> "sign-communication"
VouchSignCommunication -> "vouch-sign-communication"
Storage -> "storage"
VouchStorage -> "vouch-storage"
SignStorage -> "sign-storage"
VouchSignStorage -> "vouch-sign-storage"
Encrypt -> "encrypt"
VouchEncrypt -> "vouch-encrypt"
SignEncrypt -> "sign-encrypt"
VouchSignEncrypt -> "vouch-sign-encrypt"
-- matchpr computes the fingerprint of the given key truncated to
-- be the same lenght as the given fingerprint for comparison.
matchpr :: String -> Packet -> String
matchpr fp k = reverse $ zipWith const (reverse (fingerprint k)) fp
keyFlags :: t -> [Packet] -> [SignatureSubpacket]
keyFlags wkun uids = keyFlags0 wkun (filter isSignaturePacket uids)
keyFlags0 :: t -> [Packet] -> [SignatureSubpacket]
keyFlags0 wkun uidsigs = concat
[ keyflags
, preferredsym
, preferredhash
, preferredcomp
, features ]
where
subs = concatMap hashed_subpackets uidsigs
keyflags = filterOr isflags subs $
KeyFlagsPacket { certify_keys = True
, sign_data = True
, encrypt_communication = False
, encrypt_storage = False
, split_key = False
, authentication = False
, group_key = False
}
preferredsym = filterOr ispreferedsym subs $
PreferredSymmetricAlgorithmsPacket
[ AES256
, AES192
, AES128
, CAST5
, TripleDES
]
preferredhash = filterOr ispreferedhash subs $
PreferredHashAlgorithmsPacket
[ SHA256
, SHA1
, SHA384
, SHA512
, SHA224
]
preferredcomp = filterOr ispreferedcomp subs $
PreferredCompressionAlgorithmsPacket
[ ZLIB
, BZip2
, ZIP
]
features = filterOr isfeatures subs $
FeaturesPacket { supports_mdc = True
}
filterOr pred xs def = if null rs then [def] else rs where rs=filter pred xs
isflags (KeyFlagsPacket {}) = True
isflags _ = False
ispreferedsym (PreferredSymmetricAlgorithmsPacket {}) = True
ispreferedsym _ = False
ispreferedhash (PreferredHashAlgorithmsPacket {}) = True
ispreferedhash _ = False
ispreferedcomp (PreferredCompressionAlgorithmsPacket {}) = True
ispreferedcomp _ = False
isfeatures (FeaturesPacket {}) = True
isfeatures _ = False
matchSpec :: KeySpec -> (t, KeyData) -> Bool
matchSpec (KeyGrip grip) (_,KeyData p _ _ _)
| matchpr grip (packet p)==grip = True
| otherwise = False
matchSpec (KeyTag key tag) (_,KeyData _ sigs _ _) = not . null $ filter match ps
where
ps = map (packet .fst) sigs
match p = isSignaturePacket p
&& has_tag tag p
&& has_issuer key p
has_issuer key p = isJust $ do
issuer <- signature_issuer p
guard $ matchpr issuer key == issuer
has_tag tag p = tag `elem` mapMaybe usage (hashed_subpackets p)
|| tag `elem` map usageString (mapMaybe keyflags (hashed_subpackets p))
matchSpec (KeyUidMatch pat) (_,KeyData _ _ uids _) = not $ null us
where
us = filter (isInfixOf pat) $ Map.keys uids
data UserIDRecord = UserIDRecord {
uid_full :: String,
uid_realname :: T.Text,
uid_user :: T.Text,
uid_subdomain :: T.Text,
uid_topdomain :: T.Text
}
deriving Show
parseUID :: String -> UserIDRecord
parseUID str = UserIDRecord {
uid_full = str,
uid_realname = realname,
uid_user = user,
uid_subdomain = subdomain,
uid_topdomain = topdomain
}
where
text = T.pack str
(T.strip-> realname, T.dropAround isBracket-> email)
= T.break (=='<') text
(user, T.drop 1-> hostname) = T.break (=='@') email
( T.reverse -> topdomain,
T.reverse . T.drop 1 -> subdomain)
= T.break (=='.') . T.reverse $ hostname
isBracket :: Char -> Bool
isBracket '<' = True
isBracket '>' = True
isBracket _ = False
data KeySpec =
KeyGrip String
| KeyTag Packet String
| KeyUidMatch String
deriving Show
-- | Parse a key specification.
-- The first argument is a grip for the default working key.
parseSpec :: String -> String -> (KeySpec,Maybe String)
parseSpec grip spec = (topspec,subspec)
where
(topspec0,subspec0) = unprefix '/' spec
(toptyp,top) = unprefix ':' topspec0
(subtyp,sub) = unprefix ':' subspec0
topspec = case () of
_ | null top && or [ subtyp=="fp"
, null subtyp && is40digitHex sub
]
-> KeyGrip sub
_ | null top && null grip -> KeyUidMatch sub
_ | null top -> KeyGrip grip
_ | toptyp=="fp" || (null toptyp && is40digitHex top)
-> KeyGrip top
_ | toptyp=="u" -> KeyUidMatch top
_ -> KeyUidMatch top
subspec = case subtyp of
"t" -> Just sub
"fp" | top=="" -> Nothing
"" | top=="" && is40digitHex sub -> Nothing
"" -> listToMaybe sub >> Just sub
is40digitHex xs = ys == xs && length ys==40
where
ys = filter ishex xs
ishex c | '0' <= c && c <= '9' = True
| 'A' <= c && c <= 'F' = True
| 'a' <= c && c <= 'f' = True
ishex c = False
-- | Split a string into two at the first occurance of the given
-- delimiter. If the delimeter does not occur, then the first
-- item of the returned pair is empty and the second item is the
-- input string.
unprefix c spec = if null (snd p) then swap p else (fst p, tail (snd p))
where p = break (==c) spec
filterMatches :: KeySpec -> [(KeyKey,KeyData)] -> [(KeyKey,KeyData)]
filterMatches spec ks = filter (matchSpec spec) ks
filterNewSubs :: FilePath -> (KeySpec,Maybe String) -> KeyData -> KeyData
filterNewSubs fname spec (KeyData p sigs uids subs) = KeyData p sigs uids subs'
where
matchAll = KeyGrip ""
subkeySpec (KeyGrip grip,Nothing) = (matchAll, KeyGrip grip)
subkeySpec (topspec,Just mtag) = (topspec , KeyTag (packet p) mtag)
match spec mps
= not . null
. snd
. seek_key spec
. map packet
$ mps
old sub = isJust (Map.lookup fname $ locations $ subkeyMappedPacket sub)
oldOrMatch spec sub = old sub
|| match spec (flattenSub "" True sub)
subs' = Map.filter (if match topspec $ flattenTop "" True (KeyData p sigs uids Map.empty)
then oldOrMatch subspec
else old)
subs
where
(topspec,subspec) = subkeySpec spec
selectSecretKey :: (KeySpec,Maybe String) -> KeyDB -> Maybe Packet
selectSecretKey (spec,mtag) db = selectKey0 False (spec,mtag) db
selectPublicKey :: (KeySpec,Maybe String) -> KeyDB -> Maybe Packet
selectPublicKey (spec,mtag) db = selectKey0 True (spec,mtag) db
selectKey0 :: Bool -> (KeySpec,Maybe String) -> KeyDB -> Maybe Packet
selectKey0 wantPublic (spec,mtag) db = do
let Message ps = flattenKeys wantPublic db
ys = snd $ seek_key spec ps
flip (maybe (listToMaybe ys)) mtag $ \tag -> do
let (subspec,ys1) = (KeyTag y tag,ys1) where y:ys1 = ys
zs = snd $ seek_key subspec ys1
listToMaybe zs
{-
selectAll :: Bool -> (KeySpec,Maybe String) -> KeyDB -> [(Packet,Maybe Packet)]
selectAll wantPublic (spec,mtag) db = do
let Message ps = flattenKeys wantPublic db
ys = snd $ seek_key spec ps
y <- take 1 ys
case mtag of
Nothing -> return (y,Nothing)
Just tag ->
let search ys1 = do
let zs = snd $ seek_key (KeyTag y tag) ys1
z <- take 1 zs
(y,Just z):search (drop 1 zs)
in search (drop 1 ys)
-}
seek_key :: KeySpec -> [Packet] -> ([Packet],[Packet])
seek_key (KeyGrip grip) sec = (pre, subs)
where
(pre,subs) = break pred sec
pred p@(SecretKeyPacket {}) = matchpr grip p == grip
pred p@(PublicKeyPacket {}) = matchpr grip p == grip
pred _ = False
seek_key (KeyTag key tag) ps
| null bs = (ps, [])
| null qs =
let (as', bs') = seek_key (KeyTag key tag) (tail bs) in
(as ++ (head bs : as'), bs')
| otherwise = (reverse (tail qs), head qs : reverse rs ++ bs)
where
(as,bs) = break (\p -> isSignaturePacket p
&& has_tag tag p
&& isJust (signature_issuer p)
&& matchpr (fromJust $ signature_issuer p) key == fromJust (signature_issuer p) )
ps
(rs,qs) = break isKey (reverse as)
has_tag tag p = tag `elem` mapMaybe usage (hashed_subpackets p)
|| tag `elem` map usageString (mapMaybe keyflags (hashed_subpackets p))
seek_key (KeyUidMatch pat) ps
| null bs = (ps, [])
| null qs = let (as', bs') = seek_key (KeyUidMatch pat) (tail bs) in
(as ++ (head bs : as'), bs')
| otherwise = (reverse (tail qs), head qs : reverse rs ++ bs)
where
(as,bs) = break (isInfixOf pat . uidStr) ps
(rs,qs) = break isKey (reverse as)
uidStr (UserIDPacket s) = s
uidStr _ = ""
data InputFileContext = InputFileContext
{ homesecPath :: FilePath
, homepubPath :: FilePath
}
readInputFileS :: InputFileContext -> InputFile -> IO S.ByteString
readInputFileS ctx (FileDesc fd) = fdToHandle fd >>= S.hGetContents
readInputFileS ctx inp = do
let fname = resolveInputFile ctx inp
fmap S.concat $ mapM S.readFile fname
cachedContents :: InputFileContext -> InputFile -> IO (IO S.ByteString)
cachedContents ctx fd = do
ref <- newIORef Nothing
return $ get ref fd
where
trimCR bs = fst $ S.spanEnd (\x -> x==10 || x==13) bs
get ref fd = do
pw <- readIORef ref
flip (flip maybe return) pw $ do
pw <- fmap trimCR $ readInputFileS ctx fd
writeIORef ref (Just pw)
return pw
importPEMKey ::
(MappedPacket -> IO (KikiCondition Packet))
-> KikiCondition
(Map.Map KeyKey KeyData, [(FilePath, KikiReportAction)])
-> ([Char], Maybe [Char], [KeyKey], t)
-> IO (KikiCondition (Map.Map KeyKey KeyData, [(FilePath, KikiReportAction)]))
importPEMKey doDecrypt db' tup = do
try db' $ \(db',report0) -> do
r <- doImport doDecrypt
db'
tup
try r $ \(db'',report) -> do
return $ KikiSuccess (db'', report0 ++ report)
mergeHostFiles :: KeyRingOperation -> KeyDB -> InputFileContext
-> IO
(KikiCondition
( ( Map.Map [Char8.ByteString] KeyData
, ( [Hosts.Hosts]
, [Hosts.Hosts]
, Hosts.Hosts
, [(SockAddr, ([Char8.ByteString], [Char8.ByteString]))]
, [SockAddr]))
, [(FilePath,KikiReportAction)]))
mergeHostFiles krd db ctx = do
let hns = files ishosts
ishosts Hosts = True
ishosts _ = False
files istyp = do
(f,stream) <- Map.toList (kFiles krd)
guard (istyp $ typ stream)
resolveInputFile ctx f
hostdbs0 <- mapM (fmap Hosts.decode . L.readFile) hns
let gpgnames = map getHostnames $ Map.elems db
os = do
(addr,(ns,_)) <- gpgnames
n <- ns
return (addr,n)
setOnions hosts = foldl' (flip $ uncurry Hosts.assignName) hosts os
-- we ensure .onion names are set properly
hostdbs = map setOnions hostdbs0
outgoing_names = do
(addr,(_,gns)) <- gpgnames
guard . not $ null gns
guard $ all (null . Hosts.namesForAddress addr) hostdbs0
return addr
-- putStrLn $ "hostdbs = " ++ show hostdbs
-- 1. let U = union all the host dbs
-- preserving whitespace and comments of the first
let u0 = foldl' Hosts.plus Hosts.empty hostdbs
-- we filter U to be only finger-dresses
u1 = Hosts.filterAddrs (hasFingerDress db) u0
-- let nf h = map Char8.unpack $ Hosts.namesForAddress (fromJust $ Hosts.inet_pton "fdf4:ed98:29c7:6226:9bde:a5b4:d564:3321") h
{-
putStrLn $ "_ = {\n" ++ show (head hostdbs) ++ "}"
putStrLn $ "--> " ++ show (nf (head hostdbs))
putStrLn $ "u0 = {\n" ++ show u0 ++ "}"
putStrLn $ "--> " ++ show (nf u0)
putStrLn $ "u1 = {\n" ++ show u1 ++ "}"
putStrLn $ "--> " ++ show (nf u1)
-}
-- 2. replace gpg annotations with those in U
-- forM use_db
db' <- Traversable.mapM (setHostnames (`notElem` outgoing_names) u1) db
return $ KikiSuccess ((db',(hostdbs0,hostdbs,u1,gpgnames,outgoing_names)),[])
writeHostsFiles
:: KeyRingOperation -> InputFileContext
-> ([Hosts.Hosts],
[Hosts.Hosts],
Hosts.Hosts,
[(SockAddr, (t1, [Char8.ByteString]))],
[SockAddr])
-> IO [(FilePath, KikiReportAction)]
writeHostsFiles krd ctx (hostdbs0,hostdbs,u1,gpgnames,outgoing_names) = do
let hns = files isMutableHosts
isMutableHosts (fill -> KF_None) = False
isMutableHosts (typ -> Hosts) = True
isMutableHosts _ = False
files istyp = do
(f,stream) <- Map.toList (kFiles krd)
guard (istyp stream)
resolveInputFile ctx f
-- 3. add hostnames from gpg for addresses not in U
let u = foldl' f u1 ans
ans = reverse $ do
(addr,(_,ns)) <- gpgnames
guard $ addr `elem` outgoing_names -- . null $ Hosts.namesForAddress addr u0
n <- ns
return (addr,n)
f h (addr,n) = Hosts.assignNewName addr n h
-- 4. for each host db H, union H with U and write it out as H'
-- only if there is a non-empty diff
rss <- forM (zip hns $ zip hostdbs0 hostdbs) $ \(fname,(h0,h1)) -> do
let h = h1 `Hosts.plus` u
d = Hosts.diff h0 h
rs = map ((fname,) . HostsDiff) d
unless (null d) $ L.writeFile fname $ Hosts.encode h
return rs
return $ concat rss
buildKeyDB :: (MappedPacket -> IO (KikiCondition Packet))
-> InputFileContext -> Maybe String -> KeyRingOperation
-> IO (KikiCondition ((KeyDB
,Maybe String
,Maybe MappedPacket
,([Hosts.Hosts],
[Hosts.Hosts],
Hosts.Hosts,
[(SockAddr, (KeyKey, KeyKey))],
[SockAddr])
,Map.Map FilePath Access
)
,[(FilePath,KikiReportAction)]))
buildKeyDB doDecrypt ctx grip0 keyring = do
let
files isring = do
(f,stream) <- Map.toList (kFiles keyring)
guard (isring $ typ stream)
resolveInputFile ctx f
filesAccs isring = do
(f,stream) <- Map.toList (kFiles keyring)
guard (isring $ typ stream)
n <- resolveInputFile ctx f
return (n, access stream)
readp (n,acc) = fmap readp0 $ readPacketsFromFile n
where
readp0 ps = ((n,acc'),ps)
where acc' = case acc of
AutoAccess ->
case ps of
Message ((PublicKeyPacket {}):_) -> Pub
Message ((SecretKeyPacket {}):_) -> Sec
_ -> AutoAccess
acc -> acc
readw wk n = fmap (n,) (readPacketsFromWallet wk n)
importWalletKey wk db' (top,fname,sub,tag) = do
try db' $ \(db',report0) -> do
r <- doImportG doDecrypt
db'
(fmap keykey $ maybeToList wk)
tag
fname
sub
try r $ \(db'',report) -> do
return $ KikiSuccess (db'', report0 ++ report)
-- KeyRings (todo: KikiCondition reporting?)
(db_rings,mwk,grip,accs) <- do
ms <- mapM readp (filesAccs isring)
let grip = grip0 `mplus` (fingerprint <$> fstkey)
where
fstkey = listToMaybe $ mapMaybe isSecringKey ms
where isSecringKey ((fn,_),Message ps)
| fn==homesecPath ctx = listToMaybe ps
isSecringKey _ = Nothing
db_rings = foldl' (\db ((fname,_),ps) -> merge db fname ps) Map.empty ms
wk = listToMaybe $ do
fp <- maybeToList grip
elm <- Map.toList db_rings
guard $ matchSpec (KeyGrip fp) elm
return $ keyMappedPacket (snd elm)
accs = map fst ms
return (db_rings,wk,grip,Map.fromList accs)
let wk = fmap packet mwk
-- Wallets
wms <- mapM (readw wk) (files iswallet)
let wallet_keys = do
maybeToList wk
(fname,xs) <- wms
(_,sub,(_,m)) <- xs
(tag,top) <- Map.toList m
return (top,fname,sub,tag)
db <- foldM (importWalletKey wk) (KikiSuccess (db_rings,[])) wallet_keys
try db $ \(db,reportWallets) -> do
-- PEM files
let pems = do
(n,stream) <- Map.toList $ kFiles keyring
grip <- maybeToList grip
n <- resolveInputFile ctx n
guard $ spillable stream && ispem (typ stream)
let us = mapMaybe usageFromFilter [fill stream,spill stream]
usage <- take 1 us
guard $ all (==usage) $ drop 1 us
-- TODO: KikiCondition for spill/fill usage mismatch?
let (topspec,subspec) = parseSpec grip usage
ms = map fst $ filterMatches topspec (Map.toList db)
cmd = initializer stream
return (n,subspec,ms,cmd)
imports <- filterM (\(n,_,_,_) -> doesFileExist n) pems
db <- foldM (importPEMKey doDecrypt) (KikiSuccess (db,[])) imports
try db $ \(db,reportPEMs) -> do
r <- mergeHostFiles keyring db ctx
try r $ \((db,hs),reportHosts) -> do
return $ KikiSuccess ( (db, grip, mwk, hs, accs), reportWallets ++ reportPEMs )
torhash :: Packet -> String
torhash key = fromMaybe "" $ derToBase32 <$> derRSA key
derToBase32 :: ByteString -> String
derToBase32 = map toLower . Base32.encode . S.unpack . SHA1.hashlazy
derRSA :: Packet -> Maybe ByteString
derRSA rsa = do
k <- rsaKeyFromPacket rsa
return $ encodeASN1 DER (toASN1 k [])
try :: Monad m => KikiCondition a -> (a -> m (KikiCondition b)) -> m (KikiCondition b)
try x body =
case functorToEither x of
Left e -> return e
Right x -> body x
readKeyFromFile :: Bool -> String -> FilePath -> IO Message
readKeyFromFile False "PEM" fname = do
-- warn $ fname ++ ": reading ..."
-- Note: The key's timestamp is included in it's fingerprint.
-- Therefore, we should attempt to preserve it.
timestamp <- handleIO_ (error $ fname++": modificaiton time?") $
modificationTime <$> getFileStatus fname
input <- L.readFile fname
let dta = extractPEM "RSA PRIVATE KEY" input
-- Char8.putStrLn $ "dta = " <> dta
let rsa = do
e <- decodeASN1 DER . L.pack <$> Base64.decode (Char8.unpack dta)
asn1 <- either (const Nothing) Just e
k <- either (const Nothing) (Just . fst) (fromASN1 asn1)
let _ = k :: RSAPrivateKey
return k
-- putStrLn $ "rsa = "++ show rsa
return . Message $ do
rsa <- maybeToList rsa
return $ SecretKeyPacket
{ version = 4
, timestamp = toEnum (fromEnum timestamp)
, key_algorithm = RSA
, key = [ -- public fields...
('n',rsaN rsa)
,('e',rsaE rsa)
-- secret fields
,('d',rsaD rsa)
,('p',rsaQ rsa) -- Note: p & q swapped
,('q',rsaP rsa) -- Note: p & q swapped
,('u',rsaCoefficient rsa)
]
-- , ecc_curve = def
, s2k_useage = 0
, s2k = S2K 100 ""
, symmetric_algorithm = Unencrypted
, encrypted_data = ""
, is_subkey = True
}
readKeyFromFile is_public fmt filename = error ("unimplemented key type: "++fmt)
extractPEM :: ByteString -> ByteString -> ByteString
extractPEM typ pem = dta
where
dta = case ys of
_:dta_lines -> Char8.concat dta_lines
[] -> ""
xs = dropWhile (/="-----BEGIN " <> typ <> "-----") (Char8.lines pem)
ys = takeWhile (/="-----END " <> typ <> "-----") xs
doImport
:: Ord k =>
(MappedPacket -> IO (KikiCondition Packet))
-> Map.Map k KeyData
-> ([Char], Maybe [Char], [k], t)
-> IO (KikiCondition (Map.Map k KeyData, [(FilePath,KikiReportAction)]))
doImport doDecrypt db (fname,subspec,ms,_) = do
let fetchkey = readKeyFromFile False "PEM" fname
flip (maybe $ return CannotImportMasterKey)
subspec $ \tag -> do
Message parsedkey <- fetchkey
flip (maybe $ return $ KikiSuccess (db,[]))
(listToMaybe parsedkey) $ \key -> do
let (m0,tailms) = splitAt 1 ms
if (not (null tailms) || null m0)
then return $ AmbiguousKeySpec fname
else doImportG doDecrypt db m0 tag fname key
doImportG
:: Ord k =>
(MappedPacket -> IO (KikiCondition Packet))
-> Map.Map k KeyData
-> [k]
-> [Char]
-> [Char]
-> Packet
-> IO (KikiCondition (Map.Map k KeyData, [(FilePath,KikiReportAction)]))
doImportG doDecrypt db m0 tag fname key = do
let kk = head m0
Just (KeyData top topsigs uids subs) = Map.lookup kk db
subkk = keykey key
(is_new, subkey) = maybe (True, SubKey (mappedPacket fname key)
[])
( (False,) . addOrigin )
(Map.lookup subkk subs)
where
addOrigin (SubKey mp sigs) =
let mp' = mp
{ locations = Map.insert fname
(origin (packet mp) (-1))
(locations mp) }
in SubKey mp' sigs
subs' = Map.insert subkk subkey subs
istor = do
guard (tag == "tor")
return $ "Anonymous <root@" ++ take 16 (torhash key) ++ ".onion>"
uids' <- flip (maybe $ return $ KikiSuccess (uids,[])) istor $ \idstr -> do
let has_torid = do
-- TODO: check for omitted real name field
(sigtrusts,om) <- Map.lookup idstr uids
listToMaybe $ do
s <- (signatures $ Message (packet top:UserIDPacket idstr:map (packet . fst) sigtrusts))
signatures_over $ verify (Message [packet top]) s
flip (flip maybe $ const $ return $ KikiSuccess (uids,[])) has_torid $ do
wkun <- doDecrypt top
try wkun $ \wkun -> do
let keyflags = keyFlags wkun (map packet $ flattenAllUids fname True uids)
uid = UserIDPacket idstr
-- sig_ov = fst $ torsig g (packet top) wkun uid timestamp keyflags
tor_ov = makeInducerSig (packet top) wkun uid keyflags
sig_ov <- pgpSign (Message [wkun])
tor_ov
SHA1
(fingerprint wkun)
flip (maybe $ return $ KikiSuccess (uids,[(fname, WarnFailedToMakeSignature)]))
(sig_ov >>= listToMaybe . signatures_over)
$ \sig -> do
let om = Map.singleton fname (origin sig (-1))
trust = Map.empty
return $ KikiSuccess
( Map.insert idstr ([( (mappedPacket fname sig) {locations=om}
, trust)],om) uids
, [] )
try uids' $ \(uids',report) -> do
let SubKey subkey_p subsigs = subkey
wk = packet top
(xs',minsig,ys') = findTag tag wk key subsigs
doInsert mbsig db = do
sig' <- makeSig doDecrypt top fname subkey_p tag mbsig
try sig' $ \(sig',report) -> do
report <- return $ fmap (fname,) report ++ [(fname, YieldSignature)]
let subs' = Map.insert subkk
(SubKey subkey_p $ xs'++[sig']++ys')
subs
return $ KikiSuccess ( Map.insert kk (KeyData top topsigs uids' subs') db
, report )
report <- let f = if is_new then (++[(fname,YieldSecretKeyPacket s)])
else id
s = show (fmap fst minsig,fingerprint key)
in return (f report)
case minsig of
Nothing -> doInsert Nothing db -- we need to create a new sig
Just (True,sig) -> -- we can deduce is_new == False
-- we may need to add a tor id
return $ KikiSuccess ( Map.insert kk (KeyData top topsigs uids' subs') db
, report )
Just (False,sig) -> doInsert (Just sig) db -- We have a sig, but is missing usage@ tag
isCryptoCoinKey :: Packet -> Bool
isCryptoCoinKey p =
and [ isKey p
, key_algorithm p == ECDSA
, lookup 'c' (key p) == Just (MPI secp256k1_id)
]
getCryptoCoinTag :: Packet -> Maybe CryptoCoins.CoinNetwork
getCryptoCoinTag p | isSignaturePacket p = do
-- CryptoCoins.secret
let sps = hashed_subpackets p ++ unhashed_subpackets p
u <- listToMaybe $ mapMaybe usage sps
CryptoCoins.lookupNetwork CryptoCoins.network_name u
getCryptoCoinTag _ = Nothing
coinKeysOwnedBy :: KeyDB -> Maybe Packet -> [(CryptoCoins.CoinNetwork,MappedPacket)]
coinKeysOwnedBy db wk = do
wk <- maybeToList wk
let kk = keykey wk
KeyData top topsigs uids subs <- maybeToList $ Map.lookup kk db
(subkk,SubKey mp sigs) <- Map.toList subs
let sub = packet mp
guard $ isCryptoCoinKey sub
tag <- take 1 $ mapMaybe (getCryptoCoinTag . packet . fst) sigs
return (tag,mp)
walletImportFormat :: Word8 -> Packet -> String
walletImportFormat idbyte k = secret_base58_foo
where
-- isSecret (SecretKeyPacket {}) = True
-- isSecret _ = False
secret_base58_foo = base58_encode seckey
Just d = lookup 'd' (key k)
(_,bigendian) = S.splitAt 2 (S.concat $ L.toChunks $ encode d)
seckey = S.cons idbyte bigendian
writeWalletKeys :: KeyRingOperation -> KeyDB -> Maybe Packet -> IO (KikiCondition [(FilePath,KikiReportAction)])
writeWalletKeys krd db wk = do
let cs = db `coinKeysOwnedBy` wk
-- export wallet keys
isMutableWallet (fill -> KF_None) = False
isMutableWallet (typ -> WalletFile {}) = True
isMutableWallet _ = False
files pred = do
(f,stream) <- Map.toList (kFiles krd)
guard (pred stream)
resolveInputFile (InputFileContext "" "") f
let writeWallet report n = do
let cs' = do
(nw,mp) <- cs
-- let fns = Map.keys (locations mp)
-- trace ("COIN KEY: "++show fns) $ return ()
guard . not $ Map.member n (locations mp)
let wip = walletImportFormat (CryptoCoins.private_byte_id nw) (packet mp)
return (CryptoCoins.network_name nw,wip)
handleIO_ (return report) $ do
withFile n AppendMode $ \fh -> do
rs <- forM cs' $ \(net,wip) -> do
hPutStrLn fh wip
return (n, NewWalletKey net)
return (report ++ rs)
report <- foldM writeWallet [] (files isMutableWallet)
return $ KikiSuccess report
ifSecret :: Packet -> t -> t -> t
ifSecret (SecretKeyPacket {}) t f = t
ifSecret _ t f = f
showPacket :: Packet -> String
showPacket p | isKey p = (if is_subkey p
then showPacket0 p
else ifSecret p "----Secret-----" "----Public-----")
++ " "++show (key_algorithm p)++" "++fingerprint p
| isUserID p = showPacket0 p ++ " " ++ show (uidkey p)
| otherwise = showPacket0 p
showPacket0 p = concat . take 1 $ words (show p)
-- | returns Just True so as to indicate that
-- the public portions of keys will be imported
importPublic :: Maybe Bool
importPublic = Just True
-- | returns False True so as to indicate that
-- the public portions of keys will be imported
importSecret :: Maybe Bool
importSecret = Just False
-- | returns Nothing to indicate that no new master
-- keys will be imported.
subkeysOnly :: Maybe Bool
subkeysOnly = Nothing
-- TODO: Do we need to memoize this?
guardAuthentic :: KeyRingRuntime -> KeyData -> Maybe ()
guardAuthentic rt keydata = guard (isauth rt keydata)
isauth :: KeyRingRuntime -> KeyData -> Bool
isauth rt keydata = dont_have keydata && maybe False (`has_good_sig` keydata) wk
where wk = workingKey (rtGrip rt) (rtKeyDB rt)
dont_have (KeyData p _ _ _) = not . Map.member (rtPubring rt)
$ locations p
has_good_sig wk (KeyData k sigs uids subs) = any goodsig $ Map.toList uids
where
goodsig (uidstr,(sigs,_)) = not . null $ do
sig0 <- fmap (packet . fst) sigs
pre_ov <- signatures (Message [packet k, UserIDPacket uidstr, sig0])
signatures_over $ verify (Message [wk]) pre_ov
workingKey grip use_db = listToMaybe $ do
fp <- maybeToList grip
elm <- Map.toList use_db
guard $ matchSpec (KeyGrip fp) elm
return $ keyPacket (snd elm)
writeRingKeys :: KeyRingOperation -> KeyRingRuntime
{-
-> KeyDB -> Maybe Packet
-> FilePath -> FilePath
-}
-> IO (KikiCondition [(FilePath,KikiReportAction)])
writeRingKeys krd rt {- db wk secring pubring -} = do
let isring (KeyRingFile {}) = True
isring _ = False
db = rtKeyDB rt
secring = rtSecring rt
pubring = rtPubring rt
ctx = InputFileContext secring pubring
let s = do
(f,f0,stream) <- do
(f0,stream) <- Map.toList (kFiles krd)
guard (isring $ typ stream)
f <- resolveInputFile ctx f0
return (f,f0,stream)
let x = do
let wantedForFill :: Access -> KeyFilter -> KeyData -> Maybe Bool
wantedForFill acc KF_None = importByExistingMaster
-- Note the KF_None case is almost irrelevent as it will be
-- filtered later when isMutable returns False.
-- We use importByExistingMaster in order to generate
-- MissingPacket warnings. To disable those warnings, use
-- const Nothing instead.
wantedForFill acc (KF_Match {}) = importByExistingMaster
wantedForFill acc KF_Subkeys = importByExistingMaster
wantedForFill acc KF_Authentic = \kd -> do guardAuthentic rt kd
importByAccess acc kd
wantedForFill acc KF_All = importByAccess acc
importByAccess Pub kd = importPublic
importByAccess Sec kd = importSecret
importByAccess AutoAccess kd =
mplus (importByExistingMaster kd)
(error $ f ++ ": write public or secret key to file?")
importByExistingMaster kd@(KeyData p _ _ _) =
fmap originallyPublic $ Map.lookup f $ locations p
d <- sortByHint f keyMappedPacket (Map.elems db)
acc <- maybeToList $ Map.lookup f (rtRingAccess rt)
only_public <- maybeToList $ wantedForFill acc (fill stream) d
case fill stream of
KF_Match usage -> do grip <- maybeToList $ rtGrip rt
flattenTop f only_public
$ filterNewSubs f (parseSpec grip usage) d
_ -> flattenTop f only_public d
new_packets = filter isnew x
where isnew p = isNothing (Map.lookup f $ locations p)
guard (not $ null new_packets)
return ((f,isMutable stream),(new_packets,x))
let (towrites,report) = (\f -> foldl f ([],[]) s) $
\(ws,report) ((f,mutable),(new_packets,x)) ->
if mutable
then
let rs = flip map new_packets
$ \c -> (f, NewPacket $ showPacket (packet c))
in (ws++[(f,x)],report++rs)
else
let rs = flip map new_packets
$ \c -> (f,MissingPacket (showPacket (packet c)))
in (ws,report++rs)
forM_ towrites $ \(f,x) -> do
let m = Message $ map packet x
-- warn $ "writing "++f
L.writeFile f (encode m)
return $ KikiSuccess report
{-
getSubkeysForExport kk subspec db = do
kd <- maybeToList $ Map.lookup kk db
subkeysForExport subspec kd
-}
subkeysForExport :: Maybe String -> KeyData -> [MappedPacket]
subkeysForExport subspec (KeyData key _ _ subkeys) = do
let subs tag = do
e <- Map.elems subkeys
guard $ doSearch key tag e
return $ subkeyMappedPacket e
maybe [key] subs subspec
where
doSearch key tag (SubKey sub_mp sigtrusts) =
let (_,v,_) = findTag tag
(packet key)
(packet sub_mp)
sigtrusts
in fmap fst v==Just True
writePEM :: String -> String -> String
writePEM typ dta = pem
where
pem = unlines . concat $
[ ["-----BEGIN " <> typ <> "-----"]
, split64s dta
, ["-----END " <> typ <> "-----"] ]
split64s "" = []
split64s dta = line : split64s rest where (line,rest) = splitAt 64 dta
-- 64 byte lines
rsaPrivateKeyFromPacket :: Packet -> Maybe RSAPrivateKey
rsaPrivateKeyFromPacket pkt@(SecretKeyPacket {}) = do
-- public fields...
n <- lookup 'n' $ key pkt
e <- lookup 'e' $ key pkt
-- secret fields
MPI d <- lookup 'd' $ key pkt
MPI q <- lookup 'p' $ key pkt -- Note: p & q swapped
MPI p <- lookup 'q' $ key pkt -- Note: p & q swapped
-- Note: Here we fail if 'u' key is missing.
-- Ideally, it would be better to compute (inverse q) mod p
-- see Algebra.Structures.EuclideanDomain.extendedEuclidAlg
-- (package constructive-algebra)
coefficient <- lookup 'u' $ key pkt
let dmodp1 = MPI $ d `mod` (p - 1)
dmodqminus1 = MPI $ d `mod` (q - 1)
return $ RSAPrivateKey
{ rsaN = n
, rsaE = e
, rsaD = MPI d
, rsaP = MPI p
, rsaQ = MPI q
, rsaDmodP1 = dmodp1
, rsaDmodQminus1 = dmodqminus1
, rsaCoefficient = coefficient }
rsaPrivateKeyFromPacket _ = Nothing
writeKeyToFile ::
Bool -> String -> FilePath -> Packet -> IO [(FilePath, KikiReportAction)]
writeKeyToFile False "PEM" fname packet =
case key_algorithm packet of
RSA -> do
flip (maybe (return []))
(rsaPrivateKeyFromPacket packet) -- RSAPrivateKey
$ \rsa -> do
let asn1 = toASN1 rsa []
bs = encodeASN1 DER asn1
dta = Base64.encode (L.unpack bs)
output = writePEM "RSA PRIVATE KEY" dta
stamp = toEnum . fromEnum $ timestamp packet
createDirectoryIfMissing True (takeDirectory fname)
handleIO_ (return [(fname, FailedFileWrite)]) $ do
saved_mask <- setFileCreationMask 0o077
writeFile fname output
-- Note: The key's timestamp is included in it's fingerprint.
-- Therefore, we should attempt to preserve it.
setFileTimes fname stamp stamp
setFileCreationMask saved_mask
return [(fname, ExportedSubkey)]
algo -> return [(fname, UnableToExport algo $ fingerprint packet)]
writePEMKeys :: (MappedPacket -> IO (KikiCondition Packet))
-> KeyDB
-> [(FilePath,Maybe String,[MappedPacket],Maybe Initializer)]
-> IO (KikiCondition [(FilePath,KikiReportAction)])
writePEMKeys doDecrypt db exports = do
ds <- mapM decryptKeys exports
let ds' = map functorToEither ds
if null (lefts ds')
then do
rs <- mapM (uncurry $ writeKeyToFile False "PEM")
(rights ds')
return $ KikiSuccess (concat rs)
else do
return (head $ lefts ds')
where
decryptKeys (fname,subspec,[p],_) = do
pun <- doDecrypt p
try pun $ \pun -> do
return $ KikiSuccess (fname,pun)
makeMemoizingDecrypter :: KeyRingOperation -> InputFileContext
-> IO (MappedPacket -> IO (KikiCondition Packet))
makeMemoizingDecrypter operation ctx = do
pws <-
-- TODO: head will throw an exception if a File Descriptor operation
-- file is present. We probably should change OriginMap to use InputFile
-- instead of FilePath.
Traversable.mapM (cachedContents ctx . fromJust . pwfile . typ)
(Map.mapKeys (head . resolveInputFile ctx)
$ Map.filter (isJust . pwfile . typ) $ kFiles operation)
unkeysRef <- newIORef Map.empty
return $ doDecrypt unkeysRef pws
where
doDecrypt :: IORef (Map.Map KeyKey Packet)
-> Map.Map FilePath (IO S.ByteString)
-> MappedPacket
-> IO (KikiCondition Packet)
doDecrypt unkeysRef pws mp = do
unkeys <- readIORef unkeysRef
let wk = packet mp
kk = keykey wk
fs = Map.keys $ locations mp
decryptIt [] = return BadPassphrase
decryptIt (getpw:getpws) = do
pw <- getpw
let wkun = fromMaybe wk $ decryptSecretKey pw wk
case symmetric_algorithm wkun of
Unencrypted -> do
writeIORef unkeysRef (Map.insert kk wkun unkeys)
return $ KikiSuccess wkun
_ -> decryptIt getpws
getpws = mapMaybe (`Map.lookup` pws) fs
case symmetric_algorithm wk of
Unencrypted -> return (KikiSuccess wk)
_ -> maybe (decryptIt getpws)
(return . KikiSuccess)
$ Map.lookup kk unkeys
performManipulations ::
(MappedPacket -> IO (KikiCondition Packet))
-> KeyRingOperation
-> KeyRingRuntime
-> Maybe MappedPacket
-> IO (KikiCondition (KeyRingRuntime,[(FilePath,KikiReportAction)]))
performManipulations doDecrypt operation rt wk = do
let db = rtKeyDB rt
performAll kd = foldM perform (KikiSuccess kd) $ kManip operation rt kd
r <- Traversable.mapM performAll db
try (sequenceA r) $ \db -> do
return $ KikiSuccess (rt { rtKeyDB = db },[])
where
perform kd (InducerSignature uid subpaks) = do
try kd $ \kd -> do
flip (maybe $ return NoWorkingKey) wk $ \wk' -> do
wkun' <- doDecrypt wk'
try wkun' $ \wkun -> do
let flgs = if keykey (keyPacket kd) == keykey wkun
then keyFlags0 (keyPacket kd) (map (\(x,_,_)->x) selfsigs)
else []
sigOver = makeInducerSig (keyPacket kd)
wkun
(UserIDPacket uid)
$ flgs ++ subpaks
om = Map.singleton "--autosign" (origin p (-1)) where p = UserIDPacket uid
toMappedPacket om p = (mappedPacket "" p) {locations=om}
selfsigs = filter (\(sig,v,whosign) -> isJust (v >> Just wkun >>= guard
. (== keykey whosign)
. keykey)) vs
keys = map keyPacket $ Map.elems (rtKeyDB rt)
overs sig = signatures $ Message (keys++[keyPacket kd,UserIDPacket uid,sig])
vs :: [ ( Packet -- signature
, Maybe SignatureOver -- Nothing means non-verified
, Packet ) -- key who signed
]
vs = do
x <- maybeToList $ Map.lookup uid (rentryUids kd)
sig <- map (packet . fst) (fst x)
o <- overs sig
k <- keys
let ov = verify (Message [k]) $ o
signatures_over ov
return (sig,Just ov,k)
additional new_sig = do
new_sig <- maybeToList new_sig
guard (null $ selfsigs)
signatures_over new_sig
sigr <- pgpSign (Message [wkun]) sigOver SHA1 (fingerprint wkun)
let f ::([SigAndTrust],OriginMap) -> ([SigAndTrust],OriginMap)
f x = ( map ( (,Map.empty) . toMappedPacket om) (additional sigr) ++ fst x
, om `Map.union` snd x )
return $ KikiSuccess $ kd { rentryUids = Map.adjust f uid (rentryUids kd) }
initializeMissingPEMFiles ::
KeyRingOperation
-> InputFileContext -> Maybe String
-> (MappedPacket -> IO (KikiCondition Packet))
-> KeyDB
-> IO (KikiCondition ( (KeyDB,[( FilePath
, Maybe String
, [MappedPacket]
, Maybe Initializer)])
, [(FilePath,KikiReportAction)]))
initializeMissingPEMFiles operation ctx grip decrypt db = do
nonexistents <-
filterM (fmap not . doesFileExist . fst)
$ do (f,t) <- Map.toList (kFiles operation)
f <- resolveInputFile ctx f
return (f,t)
let (missing,notmissing) = partition (\(_,_,ns,_)->null (ns >>= snd)) $ do
(fname,stream) <- nonexistents
guard $ isMutable stream
guard $ ispem (typ stream)
usage <- usageFromFilter (fill stream) -- TODO: Error if no result?
let (topspec,subspec) = parseSpec (fromMaybe "" grip) usage
-- ms will contain duplicates if a top key has multiple matching
-- subkeys. This is intentional.
-- ms = map (keykey . fst) $ selectAll True (topspec,subspec) db
-- ms = filterMatches topspec $ Map.toList db
ns = do
(kk,kd) <- filterMatches topspec $ Map.toList db
return (kk , subkeysForExport subspec kd)
return (fname,subspec,ns,initializer stream)
(exports0,ambiguous) = partition (\(_,_,ns,_)->null $ drop 1 $ (ns>>=snd))
notmissing
exports = map (\(f,subspec,ns,cmd) -> (f,subspec,ns >>= snd,cmd)) exports0
ambiguity (f,topspec,subspec,_) = do
return $ AmbiguousKeySpec f
ifnotnull (x:xs) f g = f x
ifnotnull _ f g = g
ifnotnull ambiguous ambiguity $ do
-- create nonexistent files via external commands
do
let cmds = mapMaybe getcmd missing
where
getcmd (fname,subspec,ms,mcmd) = do
cmd <- mcmd
return (fname,subspec,ms,cmd)
rs <- forM cmds $ \tup@(fname,subspec,ms,cmd) -> do
e <- systemEnv [ ("file",fname)
, ("usage",fromMaybe "" subspec) ]
cmd
case e of
ExitFailure num -> return (tup,FailedExternal num)
ExitSuccess -> return (tup,ExternallyGeneratedFile)
v <- foldM (importPEMKey decrypt)
(KikiSuccess (db,[])) $ do
((f,subspec,ms,cmd),r) <- rs
guard $ case r of
ExternallyGeneratedFile -> True
_ -> False
return (f,subspec,map fst ms,cmd)
try v $ \(db,import_rs) -> do
return $ KikiSuccess ((db,exports), map (\((f,_,_,_),r)->(f,r)) rs
++ import_rs)
{-
interpretManip :: KeyData -> KeyRingAddress PacketUpdate -> IO KeyData
interpretManip kd (KeyRingAddress kk sk (InducerSignature ps)) = error "todo"
interpretManip kd manip = return kd
-}
runKeyRing :: KeyRingOperation -> IO (KikiResult KeyRingRuntime)
runKeyRing operation = do
homedir <- getHomeDir (homeSpec operation)
let try' :: KikiCondition a -> (a -> IO (KikiResult b)) -> IO (KikiResult b)
-- FIXME: try' should probably accept a list of KikiReportActions.
-- This would be useful for reporting on disk writes that have already
-- succeded prior to this termination.
try' v body =
case functorToEither v of
Left e -> return $ KikiResult e []
Right wkun -> body wkun
try' homedir $ \(homedir,secring,pubring,grip0) -> do
let ctx = InputFileContext secring pubring
tolocks = filesToLock operation ctx
secring <- return Nothing
pubring <- return Nothing
lks <- forM tolocks $ \f -> do
lk <- dotlock_create f 0
v <- flip (maybe $ return Nothing) lk $ \lk -> do
e <- dotlock_take lk (-1)
if e==0 then return $ Just lk
else dotlock_destroy lk >> return Nothing
return (v,f)
let (lked, map snd -> failed_locks) = partition (isJust . fst) lks
ret <-
if not $ null failed_locks
then return $ KikiResult (FailedToLock failed_locks) []
else do
-- memoizing decrypter
-- TODO: Unspilled keyrings should be usable for decrypting
-- and signing.
decrypt <- makeMemoizingDecrypter operation ctx
-- merge all keyrings, PEM files, and wallets
bresult <- buildKeyDB decrypt ctx grip0 operation
try' bresult $ \((db,grip,wk,hs,accs),report_imports) -> do
externals_ret <- initializeMissingPEMFiles operation
ctx
grip
decrypt
db
try' externals_ret $ \((db,exports),report_externals) -> do
let rt = KeyRingRuntime
{ rtPubring = homepubPath ctx
, rtSecring = homesecPath ctx
, rtGrip = grip
, rtWorkingKey = fmap packet wk
, rtKeyDB = db
, rtRingAccess = accs
}
r <- performManipulations decrypt
operation
rt
wk
try' r $ \(rt,report_manips) -> do
r <- writeWalletKeys operation (rtKeyDB rt) (fmap packet wk)
try' r $ \report_wallets -> do
r <- writeRingKeys operation rt -- db wk secring pubring
try' r $ \report_rings -> do
r <- writePEMKeys decrypt (rtKeyDB rt) exports
try' r $ \report_pems -> do
import_hosts <- writeHostsFiles operation ctx hs
return $ KikiResult (KikiSuccess rt)
$ concat [ report_imports
, report_externals
, report_manips
, report_wallets
, report_rings
, report_pems ]
forM_ lked $ \(Just lk, fname) -> dotlock_release lk
return ret
parseOptionFile :: FilePath -> IO [String]
parseOptionFile fname = do
xs <- fmap lines (readFile fname)
let ys = filter notComment xs
notComment ('#':_) = False
notComment cs = not (all isSpace cs)
return ys
-- | returns ( home directory
-- , path to secret ring
-- , path to public ring
-- , fingerprint of working key
-- )
getHomeDir :: Maybe FilePath -> IO (KikiCondition (FilePath,FilePath,FilePath,Maybe String))
getHomeDir protohome = do
homedir <- envhomedir protohome
flip (maybe (return CantFindHome))
homedir $ \homedir -> do
-- putStrLn $ "homedir = " ++show homedir
let secring = homedir ++ "/" ++ "secring.gpg"
pubring = homedir ++ "/" ++ "pubring.gpg"
-- putStrLn $ "secring = " ++ show secring
workingkey <- getWorkingKey homedir
return $ KikiSuccess (homedir,secring,pubring,workingkey)
where
envhomedir opt = do
gnupghome <- fmap (mfilter (/="")) $ lookupEnv (homevar home)
homed <- fmap (mfilter (/="") . Just) getHomeDirectory
let homegnupg = (++('/':(appdir home))) <$> homed
let val = (opt `mplus` gnupghome `mplus` homegnupg)
return $ val
-- TODO: rename this to getGrip
getWorkingKey homedir = do
let o = Nothing
h = Just homedir
ofile <- fmap listToMaybe . flip (maybe (return [])) h $ \h ->
let optfiles = map (second ((h++"/")++))
(maybe optfile_alts' (:[]) o')
optfile_alts' = zip (False:repeat True) (optfile_alts home)
o' = fmap (False,) o
in filterM (doesFileExist . snd) optfiles
args <- flip (maybe $ return []) ofile $
\(forgive,fname) -> parseOptionFile fname
let config = map (topair . words) args
where topair (x:xs) = (x,xs)
return $ lookup "default-key" config >>= listToMaybe
#if MIN_VERSION_base(4,6,0)
#else
lookupEnv :: String -> IO (Maybe String)
lookupEnv var =
handleIO_ (return Nothing) $ fmap Just (getEnv var)
#endif
isKey :: Packet -> Bool
isKey (PublicKeyPacket {}) = True
isKey (SecretKeyPacket {}) = True
isKey _ = False
isUserID :: Packet -> Bool
isUserID (UserIDPacket {}) = True
isUserID _ = False
isTrust :: Packet -> Bool
isTrust (TrustPacket {}) = True
isTrust _ = False
sigpackets ::
Monad m =>
Word8 -> [SignatureSubpacket] -> [SignatureSubpacket] -> m Packet
sigpackets typ hashed unhashed = return $
signaturePacket
4 -- version
typ -- 0x18 subkey binding sig, or 0x19 back-signature
RSA
SHA1
hashed
unhashed
0 -- Word16 -- Left 16 bits of the signed hash value
[] -- [MPI]
secretToPublic :: Packet -> Packet
secretToPublic pkt@(SecretKeyPacket {}) =
PublicKeyPacket { version = version pkt
, timestamp = timestamp pkt
, key_algorithm = key_algorithm pkt
-- , ecc_curve = ecc_curve pkt
, key = let seckey = key pkt
pubs = public_key_fields (key_algorithm pkt)
in filter (\(k,v) -> k `elem` pubs) seckey
, is_subkey = is_subkey pkt
, v3_days_of_validity = Nothing
}
secretToPublic pkt = pkt
slurpWIPKeys :: Posix.EpochTime -> L.ByteString -> ( [(Word8,Packet)], [L.ByteString])
slurpWIPKeys stamp "" = ([],[])
slurpWIPKeys stamp cs =
let (b58,xs) = Char8.span (`elem` base58chars) cs
mb = decode_btc_key stamp (Char8.unpack b58)
in if L.null b58
then let (ys,xs') = Char8.break (`elem` base58chars) cs
(ks,js) = slurpWIPKeys stamp xs'
in (ks,ys:js)
else let (ks,js) = slurpWIPKeys stamp xs
in maybe (ks,b58:js) (\(net,Message [k])->((net,k):ks,js)) mb
decode_btc_key ::
Enum timestamp => timestamp -> String -> Maybe (Word8, Message)
decode_btc_key timestamp str = do
(network_id,us) <- base58_decode str
return . (network_id,) $ Message $ do
let d = foldl' (\a b->a*256+b) 0 (map fromIntegral us :: [Integer])
{-
xy = secp256k1_G `pmul` d
x = getx xy
y = gety xy
-- y² = x³ + 7 (mod p)
y' = sqrtModP' (applyCurve secp256k1_curve x) (getp secp256k1_curve)
y'' = sqrtModPList (applyCurve secp256k1_curve x) (getp secp256k1_curve)
-}
secp256k1 = ECC.getCurveByName ECC.SEC_p256k1
ECC.Point x y = ECC.ecc_g $ ECC.common_curve secp256k1
-- pub = cannonical_eckey x y
-- hash = S.cons network_id . RIPEMD160.hash . SHA256.hash . S.pack $ pub
-- address = base58_encode hash
-- pubstr = concatMap (printf "%02x") $ pub
-- _ = pubstr :: String
return $ {- trace (unlines ["pub="++show pubstr
,"add="++show address
,"y ="++show y
,"y' ="++show y'
,"y''="++show y'']) -}
SecretKeyPacket
{ version = 4
, timestamp = toEnum (fromEnum timestamp)
, key_algorithm = ECDSA
, key = [ -- public fields...
('c',MPI secp256k1_id) -- secp256k1 (bitcoin curve)
,('l',MPI 256)
,('x',MPI x)
,('y',MPI y)
-- secret fields
,('d',MPI d)
]
, s2k_useage = 0
, s2k = S2K 100 ""
, symmetric_algorithm = Unencrypted
, encrypted_data = ""
, is_subkey = True
}
rsaKeyFromPacket :: Packet -> Maybe RSAPublicKey
rsaKeyFromPacket p | isKey p = do
n <- lookup 'n' $ key p
e <- lookup 'e' $ key p
return $ RSAKey n e
rsaKeyFromPacket _ = Nothing
readPacketsFromWallet ::
Maybe Packet
-> FilePath
-> IO [(Packet,Packet,(Packet,Map.Map FilePath Packet))]
readPacketsFromWallet wk fname = do
timestamp <- handleIO_ (error $ fname++": modificaiton time?") $
modificationTime <$> getFileStatus fname
input <- L.readFile fname
let (ks,_) = slurpWIPKeys timestamp input
unless (null ks) $ do
-- decrypt wk
-- create sigs
-- return key/sig pairs
return ()
return $ do
wk <- maybeToList wk
guard (not $ null ks)
let prep (tagbyte,k) = (wk,k,(k,Map.singleton tag wk))
where tag = CryptoCoins.nameFromSecretByte tagbyte
(wk,MarkerPacket,(MarkerPacket,Map.empty))
:map prep ks
readPacketsFromFile :: FilePath -> IO Message
readPacketsFromFile fname = do
-- warn $ fname ++ ": reading..."
input <- L.readFile fname
#if MIN_VERSION_binary(0,7,0)
return $
case decodeOrFail input of
Right (_,_,msg ) -> msg
Left (_,_,_) -> trace (fname++": read fail") $ Message []
#else
return $ decode input
#endif
now :: IO Integer
now = floor <$> Data.Time.Clock.POSIX.getPOSIXTime
signature_time :: SignatureOver -> Word32
signature_time ov = case if null cs then ds else cs of
[] -> minBound
xs -> maximum xs
where
ps = signatures_over ov
ss = filter isSignaturePacket ps
cs = concatMap (concatMap creationTime . hashed_subpackets) ss
ds = concatMap (concatMap creationTime . unhashed_subpackets) ss
creationTime (SignatureCreationTimePacket t) = [t]
creationTime _ = []
splitAtMinBy :: (t -> t -> Ordering) -> [t] -> ([t], [t])
splitAtMinBy comp xs = minimumBy comp' xxs
where
xxs = zip (inits xs) (tails xs)
comp' (_,as) (_,bs) = compM (listToMaybe as) (listToMaybe bs)
compM (Just a) (Just b) = comp a b
compM Nothing mb = GT
compM _ _ = LT
findTag ::
String
-> Packet
-> Packet
-> [(MappedPacket, b)]
-> ([(MappedPacket, b)],
Maybe (Bool, (MappedPacket, b)),
[(MappedPacket, b)])
findTag tag wk subkey subsigs = (xs',minsig,ys')
where
vs = map (\sig ->
(sig, do
sig <- Just (packet . fst $ sig)
guard (isSignaturePacket sig)
guard $ flip isSuffixOf
(fingerprint wk)
. fromMaybe "%bad%"
. signature_issuer
$ sig
listToMaybe $
map (signature_time . verify (Message [wk]))
(signatures $ Message [wk,subkey,sig])))
subsigs
(xs,ys) = splitAtMinBy (comparing (Down . snd)) vs
xs' = map fst xs
ys' = map fst $ if isNothing minsig then ys else drop 1 ys
minsig = do
(sig,ov) <- listToMaybe ys
ov
let hs = filter (\p->isNotation p && notation_name p=="usage@")
(hashed_subpackets . packet . fst $ sig)
ks = map notation_value hs
isNotation (NotationDataPacket {}) = True
isNotation _ = False
return (tag `elem` ks, sig)
makeSig ::
(MappedPacket -> IO (KikiCondition Packet))
-> MappedPacket
-> [Char]
-> MappedPacket
-> [Char]
-> Maybe (MappedPacket, Map.Map k a)
-> IO (KikiCondition ((MappedPacket, Map.Map k a), [KikiReportAction]))
makeSig doDecrypt top fname subkey_p tag mbsig = do
let wk = packet top
wkun <- doDecrypt top
try wkun $ \wkun -> do
let grip = fingerprint wk
addOrigin new_sig =
flip (maybe $ return FailedToMakeSignature)
(new_sig >>= listToMaybe . signatures_over)
$ \new_sig -> do
let mp' = mappedPacket fname new_sig
return $ KikiSuccess (mp', Map.empty)
parsedkey = [packet subkey_p]
hashed0 =
[ KeyFlagsPacket
{ certify_keys = False
, sign_data = False
, encrypt_communication = False
, encrypt_storage = False
, split_key = False
, authentication = True
, group_key = False }
, NotationDataPacket
{ human_readable = True
, notation_name = "usage@"
, notation_value = tag
}
-- implicitly added:
-- , SignatureCreationTimePacket (fromIntegral timestamp)
]
subgrip = fingerprint (head parsedkey)
back_sig <- pgpSign (Message parsedkey)
(SubkeySignature wk
(head parsedkey)
(sigpackets 0x19
hashed0
[IssuerPacket subgrip]))
(if key_algorithm (head parsedkey)==ECDSA
then SHA256
else SHA1)
subgrip
let iss = IssuerPacket (fingerprint wk)
cons_iss back_sig = iss : map EmbeddedSignaturePacket (signatures_over back_sig)
unhashed0 = maybe [iss] cons_iss back_sig
new_sig <- pgpSign (Message [wkun])
(SubkeySignature wk
(head parsedkey)
(sigpackets 0x18
hashed0
unhashed0))
SHA1
grip
let newSig = do
r <- addOrigin new_sig
return $ fmap (,[]) r
flip (maybe newSig) mbsig $ \(mp,trustmap) -> do
let sig = packet mp
isCreation (SignatureCreationTimePacket {}) = True
isCreation _ = False
isExpiration (SignatureExpirationTimePacket {}) = True
isExpiration _ = False
(cs,ps) = partition isCreation (hashed_subpackets sig)
(es,qs) = partition isExpiration ps
stamp = listToMaybe . sortBy (comparing Down) $
map unwrap cs where unwrap (SignatureCreationTimePacket x) = x
exp = listToMaybe $ sort $
map unwrap es where unwrap (SignatureExpirationTimePacket x) = x
expires = liftA2 (+) stamp exp
timestamp <- now
if fmap ( (< timestamp) . fromIntegral) expires == Just True then
return $ KikiSuccess ((mp,trustmap), [ UnableToUpdateExpiredSignature ] )
else do
let times = (:) (SignatureExpirationTimePacket (fromIntegral timestamp))
$ maybeToList $ do
e <- expires
return $ SignatureExpirationTimePacket (e - fromIntegral timestamp)
notation = NotationDataPacket
{ notation_name = "usage@"
, notation_value = tag
, human_readable = True }
sig' = sig { hashed_subpackets = times ++ [notation] ++ qs }
new_sig <- pgpSign (Message [wkun])
(SubkeySignature wk
(packet subkey_p)
[sig'] )
SHA1
(fingerprint wk)
newsig <- addOrigin new_sig
return $ fmap (,[]) newsig
data OriginFlags = OriginFlags {
originallyPublic :: Bool,
originalNum :: Int
}
deriving Show
type OriginMap = Map.Map FilePath OriginFlags
data MappedPacket = MappedPacket
{ packet :: Packet
, usage_tag :: Maybe String
, locations :: OriginMap
}
type TrustMap = Map.Map FilePath Packet
type SigAndTrust = ( MappedPacket
, TrustMap ) -- trust packets
type KeyKey = [ByteString]
data SubKey = SubKey MappedPacket [SigAndTrust]
-- | This is a roster entry, it's poorly named
-- but we are keeping the name around until
-- we're sure we wont be cutting and pasting
-- code with master any more
data KeyData = KeyData { keyMappedPacket :: MappedPacket -- main key
, rentrySigAndTrusts :: [SigAndTrust] -- sigs on main key
, rentryUids :: (Map.Map String ([SigAndTrust],OriginMap)) -- uids
, rentrySubKeys :: (Map.Map KeyKey SubKey) -- subkeys
}
type KeyDB = Map.Map KeyKey KeyData
origin :: Packet -> Int -> OriginFlags
origin p n = OriginFlags ispub n
where
ispub = case p of
SecretKeyPacket {} -> False
_ -> True
mappedPacket :: FilePath -> Packet -> MappedPacket
mappedPacket filename p = MappedPacket
{ packet = p
, usage_tag = Nothing
, locations = Map.singleton filename (origin p (-1))
}
keykey :: Packet -> KeyKey
keykey key =
-- Note: The key's timestamp is included in it's fingerprint.
-- Therefore, the same key with a different timestamp is
-- considered distinct using this keykey implementation.
fingerprint_material (key {timestamp=0}) -- TODO: smaller key?
uidkey :: Packet -> String
uidkey (UserIDPacket str) = str
merge :: KeyDB -> FilePath -> Message -> KeyDB
merge db filename (Message ps) = merge_ db filename qs
where
qs = scanPackets filename ps
scanPackets :: FilePath -> [Packet] -> [(Packet,Packet,(Packet,Map.Map FilePath Packet))]
scanPackets filename [] = []
scanPackets filename (p:ps) = scanl doit (doit (MarkerPacket,MarkerPacket,ret MarkerPacket) p) ps
where
ret p = (p,Map.empty)
doit (top,sub,prev) p =
case p of
_ | isKey p && not (is_subkey p) -> (p,MarkerPacket,ret p)
_ | isKey p && is_subkey p -> (top,p,ret p)
_ | isUserID p -> (top,p,ret p)
_ | isTrust p -> (top,sub,updateTrust top sub prev p)
_ -> (top,sub,ret p)
updateTrust top (PublicKeyPacket {}) (pre,t) p = (pre,Map.insert filename p t) -- public
updateTrust (PublicKeyPacket {}) _ (pre,t) p = (pre,Map.insert filename p t) -- public
updateTrust _ _ (pre,t) p = (pre,Map.insert filename p t) -- secret
{-
onionName :: KeyData -> (SockAddr,L.ByteString)
onionName kd = (addr,name)
where
(addr,(name:_,_)) = getHostnames kd
-}
merge_ :: KeyDB -> FilePath -> [(Packet,Packet,(Packet,Map.Map FilePath Packet))]
-> KeyDB
merge_ db filename qs = foldl mergeit db (zip [0..] qs)
where
keycomp (SecretKeyPacket {}) (PublicKeyPacket {}) = LT
keycomp (PublicKeyPacket {}) (SecretKeyPacket {}) = GT
keycomp a b | keykey a==keykey b = EQ
keycomp a b = error $ unlines ["Unable to merge keys:"
, fingerprint a
, PP.ppShow a
, fingerprint b
, PP.ppShow b
]
asMapped n p = let m = mappedPacket filename p
in m { locations = fmap (\x->x {originalNum=n}) (locations m) }
asSigAndTrust n (p,tm) = (asMapped n p,tm)
emptyUids = Map.empty
-- mergeit db (_,_,TrustPacket {}) = db -- Filter TrustPackets
mergeit :: KeyDB -> (Int,(Packet,Packet,(Packet,Map.Map FilePath Packet))) -> KeyDB
mergeit db (n,(top,sub,ptt@(p,trustmap))) | isKey top = Map.alter update (keykey top) db
where
-- NOTE:
-- if a keyring file has both a public key packet and a secret key packet
-- for the same key, then only one of them will survive, which ever is
-- later in the file.
--
-- This is due to the use of statements like
-- (Map.insert filename (origin p n) (locations key))
--
update v | isKey p && not (is_subkey p)
= case v of
Nothing -> Just $ KeyData (asMapped n p) [] emptyUids Map.empty
Just (KeyData key sigs uids subkeys) | keykey (packet key) == keykey p
-> Just $ KeyData ( (asMapped n (minimumBy keycomp [packet key,p]))
{ locations = Map.insert filename (origin p n) (locations key) } )
sigs
uids
subkeys
_ -> error . concat $ ["Unexpected master key merge error: "
,show (fingerprint top, fingerprint p)]
update (Just (KeyData key sigs uids subkeys)) | isKey p && is_subkey p
= Just $ KeyData key sigs uids (Map.alter (mergeSubkey n p) (keykey p) subkeys)
update (Just (KeyData key sigs uids subkeys)) | isUserID p
= Just $ KeyData key sigs (Map.alter (mergeUid n ptt) (uidkey p) uids)
subkeys
update (Just (KeyData key sigs uids subkeys))
= case sub of
MarkerPacket -> Just $ KeyData key (mergeSig n ptt sigs) uids subkeys
UserIDPacket {} -> Just $ KeyData key
sigs
(Map.alter (mergeUidSig n ptt) (uidkey sub) uids)
subkeys
_ | isKey sub -> Just $ KeyData key
sigs
uids
(Map.alter (mergeSubSig n ptt) (keykey sub) subkeys)
_ -> error $ "Unexpected PGP packet 1: "++(words (show p) >>= take 1)
update _ = error $ "Unexpected PGP packet 2: "++(words (show p) >>= take 1)
mergeit _ (_,(_,_,p)) = error $ "Unexpected PGP packet 3: "++whatP p
mergeSubkey :: Int -> Packet -> Maybe SubKey -> Maybe SubKey
mergeSubkey n p Nothing = Just $ SubKey (asMapped n p) []
mergeSubkey n p (Just (SubKey key sigs)) = Just $
SubKey ((asMapped n (minimumBy subcomp [packet key,p]))
{ locations = Map.insert filename (origin p n) (locations key) })
sigs
where
-- Compare master keys, LT is prefered for merging
-- Compare subkeys, LT is prefered for merging
subcomp (SecretKeyPacket {}) (PublicKeyPacket {}) = LT
subcomp (PublicKeyPacket {}) (SecretKeyPacket {}) = GT
subcomp a b | keykey a==keykey b = EQ
subcomp a b = error $ unlines ["Unable to merge subs:"
, fingerprint a
, PP.ppShow a
, fingerprint b
, PP.ppShow b
]
-- subcomp_m a b = subcomp (packet a) (packet b)
mergeUid :: Int ->(Packet,a) -> Maybe ([SigAndTrust],OriginMap) -> Maybe ([SigAndTrust],OriginMap)
mergeUid n (UserIDPacket s,_) Nothing = Just ([],Map.singleton filename (origin MarkerPacket n))
mergeUid n (UserIDPacket s,_) (Just (sigs,m)) = Just (sigs, Map.insert filename (origin MarkerPacket n) m)
mergeUid n p _ = error $ "Unable to merge into UID record: " ++whatP p
whatP (a,_) = concat . take 1 . words . show $ a
mergeSig :: Int -> (Packet,TrustMap) -> [SigAndTrust] -> [SigAndTrust]
mergeSig n sig sigs =
let (xs,ys) = break (isSameSig sig) sigs
in if null ys
then sigs++[first (asMapped n) sig]
else let y:ys'=ys
in xs ++ (mergeSameSig n sig y : ys')
isSameSig (a,_) (MappedPacket {packet=b},_) | isSignaturePacket a && isSignaturePacket b =
a { unhashed_subpackets=[] } == b { unhashed_subpackets = [] }
isSameSig (a,_) (MappedPacket {packet=b},_) = a==b
mergeSameSig :: Int -> (Packet,TrustMap) -> (MappedPacket,TrustMap) -> (MappedPacket, TrustMap)
mergeSameSig n (a,ta) (m@(MappedPacket{packet=b,locations=locs}),tb) | isSignaturePacket a && isSignaturePacket b =
( m { packet = (b { unhashed_subpackets =
foldl mergeItem (unhashed_subpackets b) (unhashed_subpackets a) })
, locations = Map.insert filename (origin a n) locs }
, tb `Map.union` ta )
where
-- TODO: when merging items, we should delete invalidated origins
-- from the orgin map.
mergeItem ys x = if x `elem` ys then ys else ys++[x]
mergeSameSig n a b = b -- trace ("discarding dup "++show a) b
mergeUidSig n sig (Just (sigs,m)) = Just (mergeSig n sig sigs, m)
mergeUidSig n sig Nothing = Just ([asSigAndTrust n sig],Map.empty)
mergeSubSig n sig (Just (SubKey key sigs)) = Just $ SubKey key (mergeSig n sig sigs)
mergeSubSig n sig Nothing = error $
"Unable to merge subkey signature: "++(words (show sig) >>= take 1)
unsig :: FilePath -> Bool -> SigAndTrust -> [MappedPacket]
unsig fname isPublic (sig,trustmap) =
sig : map (asMapped (-1)) ( take 1 . Map.elems $ Map.filterWithKey f trustmap)
where
f n _ = n==fname -- && trace ("fname=n="++show n) True
asMapped n p = let m = mappedPacket fname p
in m { locations = fmap (\x->x {originalNum=n}) (locations m) }
concatSort ::
FilePath -> ([a] -> MappedPacket) -> (b -> [a]) -> [b] -> [a]
concatSort fname getp f = concat . sortByHint fname getp . map f
sortByHint :: FilePath -> (a -> MappedPacket) -> [a] -> [a]
sortByHint fname f = sortBy (comparing gethint)
where
gethint = maybe defnum originalNum . Map.lookup fname . locations . f
defnum = -1
flattenKeys :: Bool -> KeyDB -> Message
flattenKeys isPublic db = Message $ concatMap (map packet . flattenTop "" isPublic . snd) (prefilter . Map.assocs $ db)
where
prefilter = if isPublic then id else filter isSecret
where
isSecret (_,(KeyData
(MappedPacket { packet=(SecretKeyPacket {})})
_
_
_)) = True
isSecret _ = False
flattenTop :: FilePath -> Bool -> KeyData -> [MappedPacket]
flattenTop fname ispub (KeyData key sigs uids subkeys) =
unk ispub key :
( flattenAllUids fname ispub uids
++ concatSort fname head (flattenSub fname ispub) (Map.elems subkeys))
flattenSub :: FilePath -> Bool -> SubKey -> [MappedPacket]
flattenSub fname ispub (SubKey key sigs) = unk ispub key: concatSort fname head (unsig fname ispub) sigs
unk :: Bool -> MappedPacket -> MappedPacket
unk isPublic = if isPublic then toPacket secretToPublic else id
where toPacket f mp@(MappedPacket {packet=p}) = mp {packet=(f p)}
flattenAllUids :: FilePath -> Bool -> Map.Map String ([SigAndTrust],OriginMap) -> [MappedPacket]
flattenAllUids fname ispub uids =
concatSort fname head (flattenUid fname ispub) (Map.assocs uids)
flattenUid :: FilePath -> Bool -> (String,([SigAndTrust],OriginMap)) -> [MappedPacket]
flattenUid fname ispub (str,(sigs,om)) =
(mappedPacket "" $ UserIDPacket str) {locations=om} : concatSort fname head (unsig fname ispub) sigs
getHostnames :: KeyData -> (SockAddr, ([L.ByteString],[L.ByteString]))
getHostnames (KeyData topmp _ uids subs) = (addr,(onames,othernames))
where
othernames = do
mp <- flattenAllUids "" True uids
let p = packet mp
guard $ isSignaturePacket p
uh <- unhashed_subpackets p
case uh of
NotationDataPacket True "hostname@" v
-> return $ Char8.pack v
_ -> mzero
addr = fingerdress topk
-- name = fromMaybe "" $ listToMaybe onames -- TODO: more than one tor key?
topk = packet topmp
torkeys = do
SubKey k sigs <- Map.elems subs
let subk = packet k
let sigs' = do
torsig <- filter (has_tag "tor") $ map (packet . fst) sigs
sig <- (signatures $ Message [topk,subk,torsig])
let v = verify (Message [topk]) sig
-- Require parent's signature
guard (not . null $ signatures_over v)
let unhashed = unhashed_subpackets torsig
subsigs = mapMaybe backsig unhashed
-- This should consist only of 0x19 values
-- subtypes = map signature_type subsigs
sig' <- signatures . Message $ [topk,subk]++subsigs
let v' = verify (Message [subk]) sig'
-- Require subkey's signature
guard . not . null $ signatures_over v'
return torsig
guard (not $ null sigs')
return subk
has_tag tag p = isSignaturePacket p
&& or [ tag `elem` mapMaybe usage (hashed_subpackets p)
, tag `elem` map usageString (mapMaybe keyflags (hashed_subpackets p)) ]
-- subkeyPacket (SubKey k _ ) = k
onames :: [L.ByteString]
onames = map ( (<> ".onion")
. Char8.pack
. take 16
. torhash )
torkeys
hasFingerDress :: KeyDB -> SockAddr -> Bool
hasFingerDress db addr | socketFamily addr/=AF_INET6 = False
hasFingerDress db addr = pre=="fd" && isJust (selectPublicKey (KeyGrip g',Nothing) db)
where
(pre,g) = splitAt 2 $ filter (/=':') $ Hosts.inet_ntop addr
g' = map toUpper g
-- We return into IO in case we want to make a signature here.
setHostnames :: (SockAddr -> Bool) -> Hosts.Hosts -> KeyData -> IO KeyData
setHostnames pred hosts kd@(KeyData topmp topsigs uids subs) =
-- TODO: we are removing the origin from the UID OriginMap,
-- when we should be removing origins from the locations
-- field of the sig's MappedPacket records.
-- Call getHostnames and compare to see if no-op.
if not (pred addr) || names0 == names \\ onions
then {- trace (unlines [ "setHostnames NO-OP: gpg: "++show (map Char8.unpack onions, map Char8.unpack names0)
, " file: "++show (map Char8.unpack names)
, " pred: "++show (pred addr)]) -}
(return kd)
else do
-- We should be sure to remove origins so that the data is written
-- (but only if something changed).
-- Filter all hostnames present in uids
-- Write notations into first uid
{-
trace (unlines [ "setHostnames ACTION: gpg: "++show (map Char8.unpack onions, map Char8.unpack names0)
, " file: "++show (map Char8.unpack names) ]) $ do
-}
return $ KeyData topmp topsigs uids1 subs
where
topk = packet topmp
addr = fingerdress topk
names :: [Char8.ByteString]
names = Hosts.namesForAddress addr hosts
(_,(onions,names0)) = getHostnames kd
notations = map (NotationDataPacket True "hostname@" . Char8.unpack) (names \\ onions)
isName (NotationDataPacket True "hostname@" _) = True
isName _ = False
uids0 = fmap zapIfHasName uids
fstuid = head $ do
p <- map packet $ flattenAllUids "" True uids
guard $ isUserID p
return $ uidkey p
uids1 = Map.adjust addnames fstuid uids0
addnames (sigs,om) = (fmap f ss ++ ts, om ) -- XXX: removed om=Map.empty, preserve UserId origin
where
(ss,ts) = splitAt 1 sigs
f (sig,tm) = if isSignaturePacket (packet sig) then (sig { packet = p', locations=Map.empty }, tm)
else (sig, tm)
where p' = (packet sig) { unhashed_subpackets=uh }
uh = unhashed_subpackets (packet sig) ++ notations
zapIfHasName (sigs,om) = if or bs then (sigs',om) -- XXX: removed om=Map.empty to preserve UserID origin
else (sigs,om)
where
(bs, sigs') = unzip $ map unhash sigs
unhash (sig,tm) = ( not (null ns)
, ( sig { packet = p', locations = Map.empty }
, tm ) )
where
psig = packet sig
p' = if isSignaturePacket psig then psig { unhashed_subpackets = ps }
else psig
uh = unhashed_subpackets psig
(ns,ps) = partition isName uh
fingerdress :: Packet -> SockAddr
fingerdress topk = fromMaybe zero $ Hosts.inet_pton addr_str
where
zero = SockAddrInet 0 0
addr_str = colons $ "fd" ++ drop 10 (map toLower $ fingerprint topk)
colons (a:b:c:d:xs@(_:_)) = [a,b,c,d,':'] ++ colons xs
colons xs = xs
backsig :: SignatureSubpacket -> Maybe Packet
backsig (EmbeddedSignaturePacket s) = Just s
backsig _ = Nothing
socketFamily :: SockAddr -> Family
socketFamily (SockAddrInet _ _) = AF_INET
socketFamily (SockAddrInet6 {}) = AF_INET6
socketFamily (SockAddrUnix _) = AF_UNIX
|