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|
{-# LANGUAGE CPP #-}
{-# LANGUAGE DeriveFunctor #-}
{-# LANGUAGE DoAndIfThenElse #-}
{-# LANGUAGE ForeignFunctionInterface #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE PatternGuards #-}
{-# LANGUAGE TupleSections #-}
{-# LANGUAGE ViewPatterns #-}
module KeyRing.BuildKeyDB where
import qualified Codec.Binary.Base32 as Base32
import qualified Codec.Binary.Base64 as Base64
import Control.Applicative (liftA2)
import Control.Arrow (first, second)
import Control.Exception (catch)
import Control.Monad
import ControlMaybe (handleIO_)
import Data.ASN1.BinaryEncoding (DER (..))
import Data.ASN1.Encoding (decodeASN1, encodeASN1)
import Data.ASN1.Types (fromASN1, toASN1)
import Data.Binary
import Data.Bits ((.&.), (.|.))
import Data.Bits (Bits)
import qualified Data.ByteString as S (ByteString, breakSubstring,
concat, drop, hGetContents,
hPutStr, length, null,
readFile, spanEnd, unpack)
import Data.ByteString.Lazy (ByteString)
import qualified Data.ByteString.Lazy as L (ByteString, concat, empty,
fromChunks, hGetContents,
null, readFile, toChunks)
import Data.Char
import Data.List
import qualified Data.Map as Map
import Data.Maybe
import Data.Monoid
import Data.OpenPGP
import Data.OpenPGP.Util (GenerateKeyParams (..),
decryptSecretKey, fingerprint,
generateKey, pgpSign, verify)
import Data.Ord
import Data.Text.Encoding (encodeUtf8)
import Data.Time.Clock (UTCTime)
import Data.Time.Clock.POSIX (utcTimeToPOSIXSeconds)
import System.Directory (doesFileExist)
import System.IO.Error (isDoesNotExistError)
import Text.Show.Pretty as PP (ppShow)
#if !defined(VERSION_cryptonite)
import qualified Crypto.Hash.SHA1 as SHA1
import qualified Crypto.Types.PubKey.ECC as ECC
#else
import qualified Crypto.Hash as Vincent
import qualified Crypto.PubKey.ECC.Types as ECC
import Data.ByteArray (convert)
#endif
import qualified Codec.Compression.GZip as GZip
import qualified Crypto.PubKey.RSA as RSA
import qualified Data.Text as T (break, drop, dropAround,
length, pack, reverse, strip,
unpack)
import qualified Data.X509 as X509
import System.Posix.Files (getFdStatus, getFileStatus,
modificationTime)
import qualified System.Posix.Types as Posix
#if MIN_VERSION_x509(1,5,0)
import Data.Hourglass
#endif
#if MIN_VERSION_unix(2,7,0)
import Foreign.C.Types (CTime (..))
#else
import Foreign.C.Error (throwErrnoIfMinus1_)
import Foreign.C.Types (CInt (..), CLong, CTime (..))
import Foreign.Marshal.Array (withArray)
import Foreign.Ptr
import Foreign.Storable
#endif
import Data.IORef
import Data.Traversable (sequenceA)
import qualified Data.Traversable as Traversable
import System.IO (stderr)
import System.Posix.IO (fdToHandle)
#if ! MIN_VERSION_base(4,6,0)
import GHC.Exts (Down (..))
#endif
#if MIN_VERSION_binary(0,7,0)
#endif
import Compat ()
import qualified Data.ByteString.Lazy.Char8 as Char8
import Network.Socket
import Base58
import qualified CryptoCoins
import FunctorToMaybe
import qualified Hosts
import PEM
import ScanningParser
import TimeUtil
import KeyRing.Types
-- | buildKeyDB
--
-- merge all keyrings, PEM files, and wallets into process memory.
--
buildKeyDB :: InputFileContext -> Maybe String -> KeyRingOperation
-> IO (KikiCondition (({- db -} KeyDB
,{- grip -} Maybe String
,{- wk -} Maybe MappedPacket
,{- hs -} ({- hostdbs0 -}[Hosts.Hosts],
{- hostdbs -}[Hosts.Hosts],
{- u1 -}Hosts.Hosts,
{- gpgnames -}[(SockAddr, (KeyKey, KeyKey))],
{- outgoing_names -}[SockAddr])
,{- accs -} Map.Map InputFile Access
,{- doDecrypt -} MappedPacket -> IO (KikiCondition Packet)
,{- unspilled -} Map.Map InputFile Message
)
,{- report_imports -} [(FilePath,KikiReportAction)]))
buildKeyDB ctx grip0 keyring = do
let
files istyp = do
(f,stream) <- Map.toList (opFiles keyring)
guard (istyp $ typ stream)
resolveInputFile ctx f
ringMap0 = Map.filter (isring . typ) $ opFiles keyring
(genMap,ringMap) = Map.partitionWithKey isgen ringMap0
where
isgen (Generate _ _) _ = True
isgen _ _ = False
readp :: InputFile -> StreamInfo -> IO (StreamInfo, Message)
readp f stream = fmap readp0 $ readPacketsFromFile ctx f
where
readp0 ps = (stream { access = acc' }, ps)
where acc' = case access stream of
AutoAccess ->
case ps of
Message ((PublicKeyPacket {}):_) -> Pub
Message ((SecretKeyPacket {}):_) -> Sec
_ -> AutoAccess
acc -> acc
readw wk n = fmap (n,) (readPacketsFromWallet wk (ArgFile n))
-- KeyRings (todo: KikiCondition reporting?)
(spilled,mwk,grip,accs,keys,unspilled) <- do
#if MIN_VERSION_containers(0,5,0)
ringPackets <- Map.traverseWithKey readp ringMap
#else
ringPackets <- Traversable.traverse (uncurry readp) $ Map.mapWithKey (,) ringMap
#endif
let _ = ringPackets :: Map.Map InputFile (StreamInfo, Message)
let grip = grip0 `mplus` (fingerprint <$> fstkey)
where
fstkey = do
(_,Message ps) <- Map.lookup HomeSec ringPackets
listToMaybe ps
-- | spilled
-- ring packets with info available for export
-- | unspilled
-- the rest
(spilled,unspilled) = Map.partition (spillable . fst) ringPackets
-- | keys
-- process ringPackets, and get a map of fingerprint info to
-- to a packet, remembering it's original file, access.
keys :: Map.Map KeyKey MappedPacket
keys = Map.foldl slurpkeys Map.empty
$ Map.mapWithKey filterSecrets ringPackets
where
filterSecrets f (_,Message ps) =
filter (isSecretKey . packet)
$ zipWith (mappedPacketWithHint fname) ps [1..]
where fname = resolveForReport (Just ctx) f
slurpkeys m ps = m `Map.union` Map.fromList ps'
where ps' = zip (map (keykey . packet) ps) ps
-- | mwk
-- first master key matching the provided grip
-- (the m is for "MappedPacket", wk for working key)
mwk :: Maybe MappedPacket
mwk = listToMaybe $ do
fp <- maybeToList grip
let matchfp mp = not (is_subkey p) && matchpr fp p == fp
where p = packet mp
Map.elems $ Map.filter matchfp keys
-- | accs
-- file access(Sec | Pub) lookup table
accs :: Map.Map InputFile Access
accs = fmap (access . fst) ringPackets
return (spilled,mwk,grip,accs,keys,fmap snd unspilled)
doDecrypt <- makeMemoizingDecrypter keyring ctx keys
let wk = fmap packet mwk
rt0 = KeyRingRuntime { rtPubring = homepubPath ctx
, rtSecring = homesecPath ctx
, rtGrip = grip
, rtWorkingKey = wk
, rtRingAccess = accs
, rtKeyDB = Map.empty
, rtPassphrases = doDecrypt
}
-- autosigns and deletes
transformed0 <- do
let trans :: InputFile -> (StreamInfo,Message) -> IO (KikiCondition (KikiReport,KeyDB))
trans f (info,ps) = do
let manip = combineTransforms (transforms info)
rt1 = rt0 { rtKeyDB = merge Map.empty f ps }
acc = Just Sec /= Map.lookup f accs
r <- performManipulations doDecrypt rt1 mwk manip
try r $ \(rt2,report) -> do
return $ KikiSuccess (report,rtKeyDB rt2)
#if MIN_VERSION_containers(0,5,0)
fmap sequenceA $ Map.traverseWithKey trans spilled
#else
fmap sequenceA $ Traversable.traverse (uncurry trans) $ Map.mapWithKey (,) spilled
#endif
try transformed0 $ \transformed -> do
let -- | db_rings - all keyrings combined into one
db_rings :: Map.Map KeyKey KeyData
db_rings = Map.foldlWithKey' mergeIt Map.empty transformed
where
mergeIt db f (_,dbtrans) = Map.unionWith mergeKeyData db dbtrans
-- | reportTrans
-- events, indexed by file
reportTrans :: [(FilePath, KikiReportAction)]
reportTrans = concat $ Map.elems $ fmap fst transformed
-- Wallets
let importWalletKey wk db' (top,fname,sub,tag) = do
try db' $ \(db',report0) -> do
r <- doImportG doDecrypt
db'
(fmap keykey $ maybeToList wk)
[mkUsage tag]
fname
sub
try r $ \(db'',report) -> do
return $ KikiSuccess (db'', report0 ++ report)
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 $ opFiles keyring
grip <- maybeToList grip
n <- resolveInputFile ctx n
guard $ spillable stream && isSecretKeyFile (typ stream)
let us = mapMaybe usageFromFilter [fill stream,spill stream]
usage <- take 1 us
guard $ all (==usage) $ drop 1 us
-- TODO: KikiCondition reporting for spill/fill usage mismatch?
-- TODO: parseSpec3
let (topspec,subspec) = parseSpec grip usage
ms = map fst $ filterMatches topspec (Map.toList db)
cmd = initializer stream
return (n,subspec,ms,stream, cmd)
imports <- filterM (\(n,_,_,_,_) -> doesFileExist n) pems
db <- foldM (importSecretKey doDecrypt) (KikiSuccess (db,[])) imports
try db $ \(db,reportPEMs) -> do
-- generate keys
let gens = mapMaybe g $ Map.toList genMap
where g (Generate _ params,v) = Just (params,v)
g _ = Nothing
db <- generateInternals doDecrypt mwk db gens
try db $ \(db,reportGens) -> do
r <- mergeHostFiles keyring db ctx
try r $ \((db,hs),reportHosts) -> do
return $ KikiSuccess ( (db, grip, mwk, hs, accs, doDecrypt, unspilled)
, reportTrans ++ reportWallets ++ reportPEMs ++ reportGens ++ reportHosts )
resolveInputFile :: InputFileContext -> InputFile -> [FilePath]
resolveInputFile ctx = resolve
where
resolve HomeSec = return (homesecPath ctx)
resolve HomePub = return (homepubPath ctx)
resolve (ArgFile f) = return f
resolve _ = []
isring :: FileType -> Bool
isring (KeyRingFile {}) = True
isring _ = False
readPacketsFromFile :: InputFileContext -> InputFile -> IO Message
readPacketsFromFile ctx fname = do
-- warn $ fname ++ ": reading..."
input <- readInputFileL ctx fname
#if MIN_VERSION_binary(0,7,0)
return $
case decodeOrFail input of
Right (_,_,msg ) -> msg
Left (_,_,_) ->
-- FIXME
-- trace (fname++": read fail") $
Message []
#else
return $ decode input
#endif
readPacketsFromWallet ::
Maybe Packet
-> InputFile
-> IO [(Packet,Packet,(Packet,Map.Map FilePath Packet))]
readPacketsFromWallet wk fname = do
let ctx = InputFileContext "" ""
timestamp <- getInputFileTime ctx fname
input <- readInputFileL ctx 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
spillable :: StreamInfo -> Bool
spillable (spill -> KF_None) = False
spillable _ = True
isSecretKey :: Packet -> Bool
isSecretKey (SecretKeyPacket {}) = True
isSecretKey _ = False
mappedPacketWithHint :: FilePath -> Packet -> Int -> MappedPacket
mappedPacketWithHint filename p hint = MappedPacket
{ packet = p
, locations = Map.singleton filename (origin p hint)
}
resolveForReport :: Maybe InputFileContext -> InputFile -> FilePath
resolveForReport mctx (Pipe fdr fdw) = resolveForReport mctx (ArgFile str)
where str = case (fdr,fdw) of
(0,1) -> "-"
_ -> "&pipe" ++ show (fdr,fdw)
resolveForReport mctx (FileDesc fd) = resolveForReport mctx (ArgFile str)
where str = "&" ++ show fd
resolveForReport mctx f = concat $ resolveInputFile ctx f
where ctx = fromMaybe (InputFileContext "&secret" "&public") mctx
keykey :: Packet -> KeyKey
keykey key =
-- Note: The key's timestamp is normally included in it's fingerprint.
-- This is undesirable for kiki because it causes the same
-- key to be imported multiple times and show as apparently
-- distinct keys with different fingerprints.
-- Thus, we will remove the timestamp.
fingerprint_material (key {timestamp=0}) -- TODO: smaller key?
-- matchpr computes the fingerprint of the given key truncated to
-- be the same lenght as the given fingerprint for comparison.
--
-- matchpr fp = Data.List.Extra.takeEnd (length fp)
--
matchpr :: String -> Packet -> String
matchpr fp k = reverse $ zipWith const (reverse (fingerprint k)) fp
makeMemoizingDecrypter :: KeyRingOperation -> InputFileContext
-> Map.Map KeyKey MappedPacket
-> IO (MappedPacket -> IO (KikiCondition Packet))
makeMemoizingDecrypter operation ctx keys =
if null chains then do
-- (*) Notice we do not pass ctx to resolveForReport.
-- This is because the merge function does not currently use a context
-- and the pws map keys must match the MappedPacket locations.
-- TODO: Perhaps these should both be of type InputFile rather than
-- FilePath?
-- pws :: Map.Map FilePath (IO S.ByteString)
{-
pws <-
Traversable.mapM (cachedContents ctx . fromJust . pwfile . typ)
(Map.mapKeys (resolveForReport Nothing) -- see note (*) note above
$ Map.filter (isJust . pwfile . typ) $ opFiles operation)
-}
let prompt = Just "Enter possibly multi-line passphrase (Press CTRL-D when finished):\n"
pws2 <-
Traversable.mapM (cachedContents prompt ctx)
$ Map.fromList $ mapMaybe
(\spec -> (,passSpecPassFile spec) `fmap` do
guard $ isNothing $ passSpecKeySpec spec
passSpecRingFile spec)
passspecs
defpw <- do
Traversable.mapM (cachedContents prompt ctx . passSpecPassFile)
$ listToMaybe $ filter (\sp -> isNothing (passSpecRingFile sp)
&& isNothing (passSpecKeySpec sp))
$ opPassphrases operation
unkeysRef <- newIORef (Map.empty :: Map.Map KeyKey Packet)
return $ doDecrypt unkeysRef ({- pws `Map.union` -} pws2) defpw
else let PassphraseMemoizer f = head chains
in return f
where
(chains,passspecs) = partition isChain $ opPassphrases operation
where isChain (PassphraseMemoizer {}) = True
isChain _ = False
doDecrypt :: IORef (Map.Map KeyKey Packet)
-> Map.Map FilePath (IO S.ByteString)
-> Maybe (IO S.ByteString)
-> MappedPacket
-> IO (KikiCondition Packet)
doDecrypt unkeysRef pws defpw mp0 = do
unkeys <- readIORef unkeysRef
let mp = fromMaybe mp0 $ do
k <- Map.lookup kk keys
return $ mergeKeyPacket "decrypt" mp0 k
wk = packet mp0
kk = keykey wk
fs = Map.keys $ locations mp
decryptIt [] = return BadPassphrase
decryptIt (getpw:getpws) = do
-- TODO: This function should use mergeKeyPacket to
-- combine the packet with it's unspilled version before
-- attempting to decrypt it.
pw <- getpw
let wkun = fromMaybe wk $ decryptSecretKey pw (packet mp)
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 ++ maybeToList defpw
case symmetric_algorithm wk of
Unencrypted -> return (KikiSuccess wk)
_ -> maybe (decryptIt getpws)
(return . KikiSuccess)
$ Map.lookup kk unkeys
-- | combineTransforms
-- remove rundant transforms, and compile the rest to PacketUpdate(s)
--
-- eqivalent to:
-- > combineTransforms = group (sort trans) >>= take 1 >>= resolveTransform t rt kd
combineTransforms :: [Transform] -> KeyRingRuntime -> KeyData -> [PacketUpdate]
combineTransforms trans rt kd = updates
where
updates = -- kManip operation rt kd ++
concatMap (\t -> resolveTransform t rt kd) sanitized
sanitized = group (sort trans) >>= take 1
merge :: KeyDB -> InputFile -> Message -> KeyDB
merge db inputfile (Message ps) = merge_ db filename qs
where
filename = resolveForReport Nothing inputfile
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
performManipulations ::
(MappedPacket -> IO (KikiCondition Packet))
-> KeyRingRuntime
-> Maybe MappedPacket
-> (KeyRingRuntime -> KeyData -> [PacketUpdate])
-> IO (KikiCondition (KeyRingRuntime,KikiReport))
performManipulations doDecrypt rt wk manip = do
let db = rtKeyDB rt
performAll kd = foldM perform (KikiSuccess (kd, [])) $ manip rt kd
r <- Traversable.mapM performAll db
try (sequenceA r) $ \db -> do
return $
KikiSuccess (rt {rtKeyDB = fmap fst db}, concatMap snd $ Map.elems db)
where
perform
:: KikiCondition (KeyData, KikiReport)
-> PacketUpdate
-> IO (KikiCondition (KeyData, KikiReport))
perform kd (InducerSignature uid subpaks) = do
try kd $ \(kd, report) -> 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 (keyUids 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)
-- XXX: Shouldn't this signature generation show up in the KikiReport ?
return $
KikiSuccess $
(kd {keyUids = Map.adjust f uid (keyUids kd)}, report)
perform kd (SubKeyDeletion topk subk) = do
try kd $ \(kd, report) -> do
let kk = keykey $ packet $ keyMappedPacket kd
kd'
| kk /= topk = kd
| otherwise =
kd {keySubKeys = Map.filterWithKey pred $ keySubKeys kd}
pred k _ = k /= subk
ps =
concat $
maybeToList $ do
SubKey mp sigs <- Map.lookup subk (keySubKeys kd)
return $
packet mp :
concatMap (\(p, ts) -> packet p : Map.elems ts) sigs
ctx = InputFileContext (rtSecring rt) (rtPubring rt)
rings = [HomeSec, HomePub] >>= resolveInputFile ctx
return $
KikiSuccess
( kd'
, report ++
[(f, DeletedPacket $ showPacket p) | f <- rings, p <- ps])
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
mergeKeyData :: KeyData -> KeyData -> KeyData
mergeKeyData (KeyData atop asigs auids asubs)
(KeyData btop bsigs buids bsubs)
= KeyData top sigs uids subs
where
mergeMapped a b =
MappedPacket { packet = packet a
, locations = Map.union (locations a) (locations b)
}
top = mergeMapped atop btop
sigs = foldl' (flip mergeSig) asigs bsigs
uids = Map.unionWith mergeUIDSigs auids buids
subs = Map.unionWith mergeSub asubs bsubs
mergeSub :: SubKey -> SubKey -> SubKey
mergeSub (SubKey a as) (SubKey b bs) =
SubKey (mergeMapped a b)
(foldl' (flip mergeSig) as bs)
mergeUIDSigs :: ([SigAndTrust],OriginMap) -> ([SigAndTrust],OriginMap)
-> ([SigAndTrust],OriginMap)
mergeUIDSigs (as,am) (bs,bm) = (foldl' (flip mergeSig) as bs, Map.union am bm)
doImportG
:: (MappedPacket -> IO (KikiCondition Packet))
-> Map.Map KeyKey KeyData
-> [KeyKey] -- m0, only head is used
-> [SignatureSubpacket] -- tags
-> FilePath
-> Packet
-> IO (KikiCondition (Map.Map KeyKey KeyData, [(FilePath,KikiReportAction)]))
doImportG doDecrypt db m0 tags fname key = do
let kk = head m0
Just kd@(KeyData top topsigs uids subs) = Map.lookup kk db
kdr <- insertSubkey doDecrypt kk kd tags fname key
try kdr $ \(kd',rrs) -> return $ KikiSuccess (Map.insert kk kd' db, rrs)
mkUsage :: String -> SignatureSubpacket
mkUsage tag
| Just flags <- lookup tag specials =
KeyFlagsPacket
{ certify_keys = fromEnum flags .&. 0x1 /= 0
, sign_data = fromEnum flags .&. 0x2 /= 0
, encrypt_communication = fromEnum flags .&. 0x4 /= 0
, encrypt_storage = fromEnum flags .&. 0x8 /= 0
, split_key = False
, authentication = False
, group_key = False
}
where
flagsets = [Special .. VouchSignEncrypt]
specials = map (\f -> (usageString f, f)) flagsets
mkUsage tag = NotationDataPacket
{ human_readable = True
, notation_name = "usage@"
, notation_value = tag
}
iswallet :: FileType -> Bool
iswallet (WalletFile {}) = True
iswallet _ = False
isSecretKeyFile :: FileType -> Bool
isSecretKeyFile PEMFile = True
isSecretKeyFile DNSPresentation = True
isSecretKeyFile _ = False
usageFromFilter :: MonadPlus m => KeyFilter -> m String
usageFromFilter (KF_Match usage) = return usage
usageFromFilter _ = mzero
-- | Parse a key specification.
-- The first argument is a grip for the default working key.
parseSpec :: String -> String -> (KeySpec,Maybe String)
parseSpec wkgrip spec =
if not slashed
then
case prespec of
AnyMatch -> (KeyGrip "", Nothing)
EmptyMatch -> error "Bad key spec."
WorkingKeyMatch -> (KeyGrip wkgrip, Nothing)
SubstringMatch (Just KeyTypeField) tag -> (KeyGrip wkgrip, Just tag)
SubstringMatch Nothing str -> (KeyGrip wkgrip, Just str)
SubstringMatch (Just UserIDField) ustr -> (KeyUidMatch ustr, Nothing)
FingerprintMatch fp -> (KeyGrip fp, Nothing)
else
case (prespec,postspec) of
(FingerprintMatch fp, SubstringMatch st t)
| st /= Just UserIDField -> (KeyGrip fp, Just t)
(SubstringMatch mt u, _)
| postspec `elem` [AnyMatch,EmptyMatch]
&& mt /= Just KeyTypeField -> (KeyUidMatch u, Nothing)
(SubstringMatch mt u, SubstringMatch st t)
| mt /= Just KeyTypeField
&& st /= Just UserIDField -> (KeyUidMatch u, Just t)
(FingerprintMatch _,FingerprintMatch _) -> error "todo: support fp:/fp: spec"
(_,FingerprintMatch fp) -> error "todo: support /fp: spec"
(FingerprintMatch fp,_) -> error "todo: support fp:/ spec"
_ -> error "Bad key spec."
where
(preslash,slashon) = break (=='/') spec
slashed = not $ null $ take 1 slashon
postslash = drop 1 slashon
prespec = parseSingleSpec preslash
postspec = parseSingleSpec postslash
{-
- BUGGY
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
_ -> Nothing
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 . snd) ks
importSecretKey ::
(MappedPacket -> IO (KikiCondition Packet))
-> KikiCondition
(Map.Map KeyKey KeyData, [(FilePath, KikiReportAction)])
-> (FilePath, Maybe [Char], [KeyKey], StreamInfo, t)
-> IO (KikiCondition (Map.Map KeyKey KeyData, [(FilePath, KikiReportAction)]))
importSecretKey doDecrypt db' tup = do
try db' $ \(db',report0) -> do
r <- doImport doDecrypt
db'
tup
try r $ \(db'',report) -> do
return $ KikiSuccess (db'', report0 ++ report)
generateInternals ::
(MappedPacket -> IO (KikiCondition Packet))
-> Maybe MappedPacket
-> Map.Map KeyKey KeyData
-> [(GenerateKeyParams,StreamInfo)]
-> IO (KikiCondition (Map.Map KeyKey KeyData, [(FilePath, KikiReportAction)]))
generateInternals doDecrypt mwk db gens = do
case fmap packet mwk >>= \wk -> Map.lookup (keykey wk) db of
Just kd0 -> do
kd <- foldM (generateSubkey doDecrypt) (KikiSuccess (kd0,[])) gens
try kd $ \(kd,reportGens) -> do
let kk = keykey $ packet $ fromJust mwk
return $ KikiSuccess (Map.insert kk kd db,reportGens)
Nothing -> return $ KikiSuccess (db,[])
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 (opFiles krd)
guard (istyp $ typ stream)
return f
readInputFileL' ctx f =
readInputFileL ctx f
`catch` \e -> do when (not $ isDoesNotExistError e) $ do
return () -- todo report problem
return L.empty
hostdbs0 <- mapM (fmap Hosts.decode . readInputFileL' ctx) 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)),[])
readInputFileL :: InputFileContext -> InputFile -> IO L.ByteString
readInputFileL ctx (Pipe fd _) = fdToHandle fd >>= L.hGetContents
readInputFileL ctx (FileDesc fd) = fdToHandle fd >>= L.hGetContents
readInputFileL ctx inp = do
let fname = resolveInputFile ctx inp
fmap L.concat $ mapM L.readFile fname
getInputFileTime :: InputFileContext -> InputFile -> IO CTime
getInputFileTime ctx (Pipe fdr fdw) = do
mt <- handleIO_ (return Nothing) $ Just <$> modificationTime <$> getFdStatus fdr
maybe tryw return mt
where
tryw = do
handleIO_ (error $ (resolveForReport Nothing $ Pipe fdr fdw) ++": modificaiton time?")
$ modificationTime <$> getFdStatus fdw
getInputFileTime ctx (FileDesc fd) = do
handleIO_ (error $ "&"++show fd++": modificaiton time?") $
modificationTime <$> getFdStatus fd
getInputFileTime ctx (resolveInputFile ctx -> [fname]) = do
handleIO_ (error $ fname++": modificaiton time?") $
modificationTime <$> getFileStatus fname
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
origin :: Packet -> Int -> OriginFlags
origin p n = OriginFlags ispub n
where
ispub = case p of
SecretKeyPacket {} -> False
_ -> True
cachedContents :: Maybe S.ByteString -> InputFileContext -> InputFile -> IO (IO S.ByteString)
cachedContents maybePrompt ctx fd = do
ref <- newIORef Nothing
return $ get maybePrompt ref fd
where
trimCR bs = fst $ S.spanEnd (\x -> x==10 || x==13) bs
get maybePrompt ref fd = do
pw <- readIORef ref
flip (flip maybe return) pw $ do
if fd == FileDesc 0 then case maybePrompt of
Just prompt -> S.hPutStr stderr prompt
Nothing -> return ()
else return ()
pw <- fmap trimCR $ readInputFileS ctx fd
writeIORef ref (Just pw)
return pw
mergeKeyPacket :: String -> MappedPacket -> MappedPacket -> MappedPacket
mergeKeyPacket what key p =
key { packet = minimumBy (keyCompare what) [packet key,packet p]
, locations = Map.union (locations key) (locations p)
}
-- | resolveTransform
resolveTransform :: Transform -> KeyRingRuntime -> KeyData -> [PacketUpdate]
resolveTransform Autosign rt kd@(KeyData k ksigs umap submap) = ops
where
ops = map (\u -> InducerSignature u []) us
us = filter torStyle $ Map.keys umap
torStyle str = and [ uid_topdomain parsed == "onion"
, uid_realname parsed `elem` ["","Anonymous"]
, uid_user parsed == "root"
, fmap (match . fst) (lookup (packet k) torbindings)
== Just True ]
where parsed = parseUID str
match = (==subdom) . take (fromIntegral len)
subdom0 = L.fromChunks [encodeUtf8 (uid_subdomain parsed)]
subdom = Char8.unpack subdom0
len = T.length (uid_subdomain parsed)
torbindings = getTorKeys (map packet $ flattenTop "" True kd)
getTorKeys pub = do
xs <- groupBindings pub
(_,(top,sub),us,_,_) <- xs
guard ("tor" `elem` us)
let torhash = fromMaybe "" $ derToBase32 <$> derRSA sub
return (top,(torhash,sub))
groupBindings pub = gs
where (_,bindings) = getBindings pub
bindings' = accBindings bindings
code (c,(m,s),_,_,_) = (fingerprint_material m,-c)
ownerkey (_,(a,_),_,_,_) = a
sameMaster (ownerkey->a) (ownerkey->b)
= fingerprint_material a==fingerprint_material b
gs = groupBy sameMaster (sortBy (comparing code) bindings')
-- (2 of 3) resolveTransform :: Transform -> KeyRingRuntime -> KeyData -> [PacketUpdate]
resolveTransform (DeleteSubkeyByFingerprint fp) rt kd@(KeyData k ksigs umap submap) = fmap (SubKeyDeletion topk) subk
where
topk = keykey $ packet k -- key to master of key to be deleted
subk = do
(k,sub) <- Map.toList submap
guard (map toUpper fp == fingerprint (packet (subkeyMappedPacket sub)))
return k
-- (3 of 3) resolveTransform :: Transform -> KeyRingRuntime -> KeyData -> [PacketUpdate]
resolveTransform (DeleteSubkeyByUsage tag) rt kd@(KeyData k ksigs umap submap) = fmap (SubKeyDeletion topk) subk
where
topk = keykey $ packet k -- key to master of key to be deleted
subk = do
(k,SubKey p sigs) <- Map.toList submap
take 1 $ filter (has_tag tag) $ map (packet . fst) sigs
return k
merge_ :: KeyDB -> FilePath -> [(Packet,Packet,(Packet,Map.Map FilePath Packet))]
-> KeyDB
merge_ db filename qs = foldl mergeit db (zip [0..] qs)
where
-- mergeit db (_,_,TrustPacket {}) = db -- Filter TrustPackets
mergeit :: KeyDB -> (Int,(Packet,Packet,(Packet,Map.Map FilePath Packet))) -> KeyDB
mergeit db adding@(n,(top,sub,ptt@(p,trustmap))) | isKey top = Map.alter update (keykey top) db
where
update Nothing = Just $ KeyData (mappedPacketWithHint filename p n) [] Map.empty Map.empty
update (Just kd) = dbInsertPacket kd filename adding
mergeit _ (_,(_,_,p)) = error $ "Unexpected PGP packet 3: "++whatP p
whatP (a,_) = concat . take 1 . words . show $ a
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
keyPacket :: KeyData -> Packet
keyPacket (KeyData k _ _ _) = packet k
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
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]
insertSubkey :: (MappedPacket -> IO (KikiCondition Packet)) -> t -> KeyData -> [SignatureSubpacket] -> [Char] -> Packet -> IO (KikiCondition (KeyData, [([Char], KikiReportAction)]))
insertSubkey doDecrypt kk (KeyData top topsigs uids subs) tags fname key = do
let 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 ("tor" `elem` mapMaybe usage tags)
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 tags wk key subsigs
doInsert mbsig = do
-- NEW SUBKEY BINDING SIGNATURE
sig' <- makeSig doDecrypt top fname subkey_p tags 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 ( KeyData top topsigs uids' subs'
, 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 -- 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 ( KeyData top topsigs uids' subs'
, report )
Just (False,sig) -> doInsert (Just sig) -- We have a sig, but is missing usage@ tag
mappedPacket :: FilePath -> Packet -> MappedPacket
mappedPacket filename p = MappedPacket
{ packet = p
, locations = Map.singleton filename (origin p (-1))
}
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 :: Show a => a -> [Char]
showPacket0 p = concat . take 1 $ words (show p)
mergeSig :: SigAndTrust -> [SigAndTrust] -> [SigAndTrust]
mergeSig sig sigs =
let (xs,ys) = break (isSameSig (first packet sig)) sigs
in if null ys
then sigs++[sig] -- [first (flip (mappedPacketWithHint fname) n) sig]
else let y:ys'=ys
in xs ++ (mergeSameSig sig y : ys')
where
isSameSig (a,_) (MappedPacket {packet=b},_) | isSignaturePacket a && isSignaturePacket b =
a { unhashed_subpackets=[] } == b { unhashed_subpackets = [] }
isSameSig (a,_) (MappedPacket {packet=b},_) = a==b
mergeSameSig :: (MappedPacket,TrustMap) -> (MappedPacket,TrustMap) -> (MappedPacket, TrustMap)
mergeSameSig (a,ta) (m@(MappedPacket{packet=b,locations=locs}),tb)
| isSignaturePacket (packet a) && isSignaturePacket b =
( m { packet = b { unhashed_subpackets =
union (unhashed_subpackets b) (unhashed_subpackets $ packet a)
}
, locations = Map.union (locations a) locs } -- Map.insert fname (origin a n) locs }
-- TODO: when merging items, we should delete invalidated origins
-- from the orgin map.
, tb `Map.union` ta )
mergeSameSig a b = b -- trace ("discarding dup "++show a) b
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"
parseSingleSpec :: String -> SingleKeySpec
parseSingleSpec "*" = AnyMatch
parseSingleSpec "-" = WorkingKeyMatch
parseSingleSpec "" = EmptyMatch
parseSingleSpec ('t':':':tag) = SubstringMatch (Just KeyTypeField) tag
parseSingleSpec ('u':':':tag) = SubstringMatch (Just UserIDField) tag
parseSingleSpec ('c':':':tag) = SubstringMatch (Just GroupIDField) tag
parseSingleSpec ('f':'p':':':fp) = FingerprintMatch fp
parseSingleSpec str
| is40digitHex str = FingerprintMatch str
| otherwise = SubstringMatch Nothing str
is40digitHex :: [Char] -> Bool
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
matchSpec :: KeySpec -> 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
doImport
:: (MappedPacket -> IO (KikiCondition Packet))
-> Map.Map KeyKey KeyData
-> (FilePath, Maybe [Char], [KeyKey], StreamInfo, t)
-> IO (KikiCondition (Map.Map KeyKey KeyData, [(FilePath,KikiReportAction)]))
doImport doDecrypt db (fname,subspec,ms,typ -> typ,_) = do
flip (maybe $ return CannotImportMasterKey)
subspec $ \tag -> do
(certs,keys) <- case typ of
PEMFile -> do
ps <- readSecretPEMFile (ArgFile fname)
let (mapMaybe spemCert -> certs,mapMaybe spemPacket-> keys)
= partition (isJust . spemCert) ps
return (certs,keys)
DNSPresentation -> do
p <- readSecretDNSFile (ArgFile fname)
return ([],[p])
-- TODO Probably we need to move to a new design where signature
-- packets are merged into the database in one phase with null
-- signatures, and then the signatures are made in the next phase.
-- This would let us merge annotations (like certificates) from
-- seperate files.
foldM (importKey tag certs) (KikiSuccess (db,[])) keys
where
importKey tag certs prior key = do
try prior $ \(db,report) -> do
let (m0,tailms) = splitAt 1 ms
if (not (null tailms) || null m0)
then return $ AmbiguousKeySpec fname
else do
let kk = keykey key
cs = filter (\c -> kk==keykey (pcertKey c)) certs
blobs = map mkCertNotation $ nub $ map pcertBlob cs
mkCertNotation bs = NotationDataPacket
{ human_readable = False
, notation_name = "x509cert@"
, notation_value = Char8.unpack bs }
datedKey = key { timestamp = fromTime $ minimum dates }
dates = fromTime (timestamp key) : map pcertTimestamp certs
r <- doImportG doDecrypt db m0 (mkUsage tag:blobs) fname datedKey
try r $ \(db',report') -> do
return $ KikiSuccess (db',report++report')
generateSubkey ::
(MappedPacket -> IO (KikiCondition Packet)) -- decrypt[
-> KikiCondition (KeyData, [(FilePath, KikiReportAction)]) -- db
-> (GenerateKeyParams, StreamInfo)
-> IO (KikiCondition (KeyData, [(FilePath, KikiReportAction)]))
generateSubkey doDecrypt kd' (genparam,StreamInfo { spill = KF_Match tag }) = do
try kd' $ \(kd,report0) -> do
let subs = do
SubKey p sigs <- Map.elems $ keySubKeys kd
filter (has_tag tag) $ map (packet . fst) sigs
if null subs
then do
newkey <- generateKey genparam
kdr <- insertSubkey doDecrypt (keykey (keyPacket kd)) kd [mkUsage tag] "" newkey
try kdr $ \(newkd,report) -> do
return $ KikiSuccess (newkd, report ++ [("", NewPacket $ showPacket newkey)])
else do
return $ KikiSuccess (kd,report0)
generateSubkey _ kd _ = return kd
-- |
-- Returns (ip6 fingerprint address,(onion names,other host names))
--
-- Requires a validly cross-signed tor key for each onion name returned.
-- (Signature checks are performed.)
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
topk = packet topmp
torkeys = getSubkeys CrossSigned topk subs "tor"
-- 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) || gotNonOnions == namesWithoutGotOnions
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
(_, (gotOnions, gotNonOnions)) = getHostnames kd
namesWithoutGotOnions = names \\ gotOnions
notations = map (NotationDataPacket True "hostname@" . Char8.unpack) namesWithoutGotOnions
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
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
}
-- 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
-}
readInputFileS :: InputFileContext -> InputFile -> IO S.ByteString
readInputFileS ctx (Pipe fd _) = fdToHandle fd >>= S.hGetContents
readInputFileS ctx (FileDesc fd) = fdToHandle fd >>= S.hGetContents
readInputFileS ctx inp = do
let fname = resolveInputFile ctx inp
fmap S.concat $ mapM S.readFile fname
keyCompare :: String -> Packet -> Packet -> Ordering
keyCompare what (SecretKeyPacket {}) (PublicKeyPacket {}) = LT
keyCompare what (PublicKeyPacket {}) (SecretKeyPacket {}) = GT
keyCompare what a b | keykey a==keykey b = EQ
keyCompare what a b = error $ unlines ["Unable to merge "++what++":"
, fingerprint a
, PP.ppShow a
, fingerprint b
, PP.ppShow b
]
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
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))
derToBase32 :: ByteString -> String
#if !defined(VERSION_cryptonite)
derToBase32 = map toLower . Base32.encode . S.unpack . SHA1.hashlazy
#else
derToBase32 = map toLower . Base32.encode . S.unpack . sha1
where
sha1 :: L.ByteString -> S.ByteString
sha1 x = convert (Vincent.hashlazy x :: Vincent.Digest Vincent.SHA1)
#endif
derRSA :: Packet -> Maybe ByteString
derRSA rsa = do
k <- rsaKeyFromPacket rsa
return $ encodeASN1 DER (toASN1 k [])
getBindings ::
[Packet]
->
( [([Packet],[SignatureOver])] -- other signatures with key sets
-- that were used for the verifications
, [(Word8,
(Packet, Packet), -- (topkey,subkey)
[String], -- usage flags
[SignatureSubpacket], -- hashed data
[Packet])] -- binding signatures
)
getBindings pkts = (sigs,bindings)
where
(sigs,concat->bindings) = unzip $ do
let (keys,_) = partition isKey pkts
keys <- disjoint_fp keys
let (bs,sigs) = verifyBindings keys pkts
return . ((keys,sigs),) $ do
b <- bs -- trace ("sigs = "++show (map (map signature_issuer . signatures_over) sigs)) bs
i <- map signature_issuer (signatures_over b)
i <- maybeToList i
who <- maybeToList $ find_key fingerprint (Message keys) i
let (code,claimants) =
case () of
_ | who == topkey b -> (1,[])
_ | who == subkey b -> (2,[])
_ -> (0,[who])
let hashed = signatures_over b >>= hashed_subpackets
kind = guard (code==1) >> hashed >>= maybeToList . usage
return (code,(topkey b,subkey b), kind, hashed,claimants)
-- Returned data is simmilar to getBindings but the Word8 codes
-- are ORed together.
accBindings ::
Bits t =>
[(t, (Packet, Packet), [a], [a1], [a2])]
-> [(t, (Packet, Packet), [a], [a1], [a2])]
accBindings bs = as
where
gs = groupBy samePair . sortBy (comparing bindingPair) $ bs
as = map (foldl1 combine) gs
bindingPair (_,p,_,_,_) = pub2 p
where
pub2 (a,b) = (pub a, pub b)
pub a = fingerprint_material a
samePair a b = bindingPair a == bindingPair b
combine (ac,p,akind,ahashed,aclaimaints)
(bc,_,bkind,bhashed,bclaimaints)
= (ac .|. bc,p,akind++bkind,ahashed++bhashed,aclaimaints++bclaimaints)
subkeyMappedPacket :: SubKey -> MappedPacket
subkeyMappedPacket (SubKey k _ ) = k
has_tag :: String -> Packet -> Bool
has_tag tag p = isSignaturePacket p
&& or [ tag `elem` mapMaybe usage (hashed_subpackets p)
, tag `elem` map usageString (mapMaybe keyflags (hashed_subpackets p)) ]
dbInsertPacket :: KeyData -> FilePath -> (Int,(Packet,Packet,(Packet,Map.Map FilePath Packet))) -> Maybe KeyData
dbInsertPacket kd filename (n,(top,sub,ptt@(p,trustmap))) = update (Just kd)
where
asMapped n p = mappedPacketWithHint filename p n
asSigAndTrust n (p,tm) = (asMapped n p,tm)
-- 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 :: Maybe KeyData -> Maybe KeyData
update v | isKey p && not (is_subkey p)
= case v of
Nothing -> Just $ KeyData (asMapped n p) [] Map.empty Map.empty
Just (KeyData key sigs uids subkeys) | keykey (packet key) == keykey p
-> Just $ KeyData (mergeKeyPacket "master keys" key $ asMapped n p)
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 (first (flip (mappedPacketWithHint filename) 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)
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 (mergeKeyPacket "subs" key $ asMapped n p)
sigs
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
mergeUidSig n sig (Just (sigs,m)) = Just (mergeSig (first (flip (mappedPacketWithHint filename) 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 (first (flip (mappedPacketWithHint filename) n) sig) sigs)
mergeSubSig n sig Nothing = error $
"Unable to merge subkey signature: "++(words (show sig) >>= take 1)
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
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]
usage :: SignatureSubpacket -> Maybe String
usage (NotationDataPacket
{ human_readable = True
, notation_name = "usage@"
, notation_value = u
}) = Just u
usage _ = Nothing
torhash :: Packet -> String
torhash key = fromMaybe "" $ derToBase32 <$> derRSA key
keyFlags :: t -> [Packet] -> [SignatureSubpacket]
keyFlags wkun uids = keyFlags0 wkun (filter isSignaturePacket uids)
flattenAllUids :: FilePath -> Bool -> Map.Map String ([SigAndTrust],OriginMap) -> [MappedPacket]
flattenAllUids fname ispub uids =
concatSort fname head (flattenUid fname ispub) (Map.assocs uids)
-- | Given list of subpackets, a master key, one of its subkeys and a
-- list of signatures on that subkey, yields:
--
-- * preceding list of signatures
--
-- * The most recent valid signature made by the master key along with a
-- flag that indicates whether or not all of the supplied subpackets occur in
-- it or, if no valid signature from the working key is present, Nothing.
--
-- * following list of signatures
--
findTag ::
[SignatureSubpacket]
-> Packet
-> Packet
-> [(MappedPacket, b)]
-> ([(MappedPacket, b)],
Maybe (Bool, (MappedPacket, b)),
[(MappedPacket, b)])
findTag tag topk subkey subsigs = (xs',minsig,ys')
where
vs = map (\sig ->
(sig, do
sig <- Just (packet . fst $ sig)
guard (isSignaturePacket sig)
guard $ flip isSuffixOf
(fingerprint topk)
. fromMaybe "%bad%"
. signature_issuer
$ sig
listToMaybe $
map (signature_time . verify (Message [topk]))
(signatures $ Message [topk,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 hshed = hashed_subpackets $ packet $ fst sig
return ( null $ tag \\ hshed, sig)
makeSig ::
(MappedPacket -> IO (KikiCondition Packet))
-> MappedPacket
-> [Char]
-> MappedPacket
-> [SignatureSubpacket]
-> Maybe (MappedPacket, Map.Map k a)
-> IO (KikiCondition ((MappedPacket, Map.Map k a), [KikiReportAction]))
makeSig doDecrypt top fname subkey_p tags 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
| any isFlagsPacket tags = tags
| otherwise =
KeyFlagsPacket
{ certify_keys = False
, sign_data = False
, encrypt_communication = False
, encrypt_storage = False
, split_key = False
, authentication = True
, group_key = False
} :
tags
-- implicitly added:
-- , SignatureCreationTimePacket (fromIntegral timestamp)
isFlagsPacket (KeyFlagsPacket {}) = True
isFlagsPacket _ = False
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)
sig' = sig {hashed_subpackets = times ++ (qs `union` tags)}
new_sig <-
pgpSign
(Message [wkun])
(SubkeySignature wk (packet subkey_p) [sig'])
SHA1
(fingerprint wk)
newsig <- addOrigin new_sig
return $ fmap (, []) newsig
ifSecret :: Packet -> t -> t -> t
ifSecret (SecretKeyPacket {}) t f = t
ifSecret _ t f = f
uidkey :: Packet -> String
uidkey (UserIDPacket str) = str
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
readSecretPEMFile :: InputFile -> IO [SecretPEMData]
readSecretPEMFile fname = do
-- warn $ fname ++ ": reading ..."
let ctx = InputFileContext "" ""
-- Note: The key's timestamp is included in it's fingerprint.
-- Therefore, we should attempt to preserve it.
stamp <- getInputFileTime ctx fname
input <- readInputFileL ctx fname
let edta = scanAndParse (fmap Left dateParser <> fmap Right (pkcs1 <> cert)) $ Char8.lines input
pkcs1 = fmap (parseRSAPrivateKey . pemBlob)
$ pemParser $ Just "RSA PRIVATE KEY"
cert = fmap (fmap PEMCertificate . parseCertBlob False . pemBlob)
$ pemParser $ Just "CERTIFICATE"
parseRSAPrivateKey dta = do
let e = decodeASN1 DER dta
asn1 <- either (const $ mzero) return e
rsa <- either (const mzero) (return . fst) (fromASN1 asn1)
let _ = rsa :: RSAPrivateKey
return $ PEMPacket $ rsaToPGP stamp rsa
dta = catMaybes $ map snd $ scanl mergeDate (stamp,Nothing) edta
mergeDate (_,obj) (Left tm) = (fromTime tm,obj)
mergeDate (tm,_) (Right (Just (PEMPacket key))) = (tm,Just $ PEMPacket key')
where key' = if tm < fromTime (timestamp key)
then key { timestamp = fromTime tm }
else key
mergeDate (tm,_) (Right mb) = (tm,mb)
return $ dta
readSecretDNSFile :: InputFile -> IO Packet
readSecretDNSFile fname = do
let ctx = InputFileContext "" ""
stamp <- getInputFileTime ctx fname
input <- readInputFileL ctx fname
let kvs = map ( second (Char8.dropWhile isSpace . Char8.drop 1)
. Char8.break (==':'))
$ Char8.lines input
alg = maybe RSA parseAlg $ lookup "Algorithm" kvs
parseAlg spec = case Char8.words spec of
nstr:_ -> case read (Char8.unpack nstr) :: Int of
2 -> DH
3 -> DSA -- SHA1
5 -> RSA -- SHA1
6 -> DSA -- NSEC3-SHA1 (RFC5155)
7 -> RSA -- RSASHA1-NSEC3-SHA1 (RFC5155)
8 -> RSA -- SHA256
10 -> RSA -- SHA512 (RFC5702)
-- 12 -> GOST
13 -> ECDSA -- P-256 SHA256 (RFC6605)
14 -> ECDSA -- P-384 SHA384 (RFC6605)
_ -> RSA
case alg of
RSA -> return $ rsaToPGP stamp $ fromJust $ extractRSAKeyFields kvs
spemPacket :: SecretPEMData -> Maybe Packet
spemPacket (PEMPacket p) = Just p
spemPacket _ = Nothing
spemCert :: SecretPEMData -> Maybe ParsedCert
spemCert (PEMCertificate p) = Just p
spemCert _ = Nothing
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
getSubkeys :: SubkeyStatus -> Packet -> Map.Map KeyKey SubKey -> String -> [Packet]
getSubkeys ck topk subs tag = do
SubKey k sigs <- Map.elems subs
let subk = packet k
let sigs' = do
-- require tag
torsig <- filter (has_tag tag) $ map (packet . fst) sigs
-- require parent's signature
when (ck > Unsigned) $ do
sig <- (signatures $ Message [topk,subk,torsig])
let v = verify (Message [topk]) sig
-- Require parent's signature
guard (not . null $ signatures_over v)
-- require child's back signature
when (ck == CrossSigned ) $ do
let unhashed = unhashed_subpackets torsig
subsigs = mapMaybe backsig unhashed
-- This should consist only of 0x19 values
-- subtypes = map signature_type subsigs
-- subtyp <- subtypes
-- guard (subtyp == 0x19)
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
socketFamily :: SockAddr -> Family
socketFamily (SockAddrInet _ _) = AF_INET
socketFamily (SockAddrInet6 {}) = AF_INET6
socketFamily (SockAddrUnix _) = AF_UNIX
selectPublicKey :: (KeySpec,Maybe String) -> KeyDB -> Maybe Packet
selectPublicKey (spec,mtag) db = selectKey0 True (spec,mtag) db
isBracket :: Char -> Bool
isBracket '<' = True
isBracket '>' = True
isBracket _ = False
unk :: Bool -> MappedPacket -> MappedPacket
unk isPublic = if isPublic then toPacket secretToPublic else id
where toPacket f mp@(MappedPacket {packet=p}) = mp {packet=(f p)}
concatSort ::
FilePath -> ([a] -> MappedPacket) -> (b -> [a]) -> [b] -> [a]
concatSort fname getp f = concat . sortByHint fname getp . map f
flattenSub :: FilePath -> Bool -> SubKey -> [MappedPacket]
flattenSub fname ispub (SubKey key sigs) = unk ispub key: concatSort fname head (unsig fname ispub) sigs
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
disjoint_fp :: [Packet] -> [[Packet]]
disjoint_fp ks = {- concatMap group2 $ -} transpose grouped
where
grouped = groupBy samepr . sortBy (comparing smallpr) $ ks
samepr a b = smallpr a == smallpr b
{-
-- useful for testing
group2 :: [a] -> [[a]]
group2 (x:y:ys) = [x,y]:group2 ys
group2 [x] = [[x]]
group2 [] = []
-}
verifyBindings :: [Packet] -> [Packet] -> ([SignatureOver], [SignatureOver])
verifyBindings keys nonkeys = (top ++ filter isSubkeySignature embedded,othersigs)
where
verified = do
sig <- signatures (Message nonkeys)
let v = verify (Message keys) sig
guard (not . null $ signatures_over v)
return v
(top,othersigs) = partition isSubkeySignature verified
embedded = do
sub <- top
let sigover = signatures_over sub
unhashed = sigover >>= unhashed_subpackets
subsigs = mapMaybe backsig unhashed
-- This should consist only of 0x19 values
-- subtypes = map signature_type subsigs
-- trace ("subtypes = "++show subtypes) (return ())
-- trace ("issuers: "++show (map signature_issuer subsigs)) (return ())
sig <- signatures (Message ([topkey sub,subkey sub]++subsigs))
let v = verify (Message [subkey sub]) sig
guard (not . null $ signatures_over v)
return v
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
-- | Get the time stamp of a signature.
--
-- Warning: This function checks unhashed_subpackets if no timestamp occurs in
-- the hashed section. TODO: change this?
--
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
parseCertBlob :: Bool -> ByteString -> Maybe ParsedCert
parseCertBlob comp bs = do
asn1 <- either (const Nothing) Just
$ decodeASN1 DER bs
let asn1' = drop 2 asn1
cert <- either (const Nothing) (Just . fst) (fromASN1 asn1')
let _ = cert :: X509.Certificate
notBefore :: UTCTime
#if MIN_VERSION_x509(1,5,0)
notBefore = toUTC ( timeFromElapsedP (timeGetElapsedP vincentTime) :: CTime) -- nanoToUTCTime nano
where (vincentTime,_) = X509.certValidity cert
#else
(notBefore,_) = X509.certValidity cert
#endif
case X509.certPubKey cert of
X509.PubKeyRSA key -> do
let withoutkey =
let ekey = toStrict $ encodeASN1 DER (toASN1 key [])
(pre,post) = S.breakSubstring ekey $ toStrict bs
post' = S.drop (S.length ekey) post
len :: Word16
len = if S.null post then maxBound
else fromIntegral $ S.length pre
in if len < 4096
then encode len <> GZip.compress (Char8.fromChunks [pre,post'])
else bs
return
ParsedCert { pcertKey = packetFromPublicRSAKey notBefore
(MPI $ RSA.public_n key)
(MPI $ RSA.public_e key)
, pcertTimestamp = notBefore
, pcertBlob = if comp then withoutkey
else bs
}
_ -> Nothing
rsaToPGP :: TimeUtil.IsUTC a => a -> RSAPrivateKey -> Packet
rsaToPGP stamp rsa = SecretKeyPacket
{ version = 4
, timestamp = fromTime stamp -- toEnum (fromEnum stamp)
, 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
}
extractRSAKeyFields :: [(ByteString,ByteString)] -> Maybe RSAPrivateKey
extractRSAKeyFields kvs = do
let kvs' = mapMaybe (\(k,v) -> (k,) <$> parseField v) kvs
n <- lookup "Modulus" kvs'
e <- lookup "PublicExponent" kvs'
d <- lookup "PrivateExponent" kvs'
p <- lookup "Prime1" kvs' -- p
q <- lookup "Prime2" kvs' -- q
dmodp1 <- lookup "Exponent1" kvs' -- dP = d `mod` (p - 1)
dmodqminus1 <- lookup "Exponent2" kvs' -- dQ = d `mod` (q - 1)
u <- lookup "Coefficient" kvs'
{-
case (d,p,dmodp1) of
(MPI dd, MPI pp, MPI x) | x == dd `mod` (pp-1) -> return ()
_ -> error "dmodp fail!"
case (d,q,dmodqminus1) of
(MPI dd, MPI qq, MPI x) | x == dd `mod` (qq-1) -> return ()
_ -> error "dmodq fail!"
-}
return $ RSAPrivateKey
{ rsaN = n
, rsaE = e
, rsaD = d
, rsaP = p
, rsaQ = q
, rsaDmodP1 = dmodp1
, rsaDmodQminus1 = dmodqminus1
, rsaCoefficient = u }
where
parseField blob = MPI <$> m
where m = bigendian <$> Base64.decode (Char8.unpack blob)
bigendian bs = snd $ foldl' (\(c,a) w8 -> (c-1, a + 256^c * fromIntegral w8)) (nlen-1,0) bs
where
nlen = length bs
backsig :: SignatureSubpacket -> Maybe Packet
backsig (EmbeddedSignaturePacket s) = Just s
backsig _ = Nothing
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
case ys of
y:ys1 -> listToMaybe $ snd $ seek_key (KeyTag y tag) ys1
[] -> Nothing
sortByHint :: FilePath -> (a -> MappedPacket) -> [a] -> [a]
sortByHint fname f = sortBy (comparing gethint)
where
gethint = maybe defnum originalNum . Map.lookup fname . locations . f
defnum = -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) }
smallpr :: Packet -> [Char]
smallpr k = drop 24 $ fingerprint k
isSubkeySignature :: SignatureOver -> Bool
isSubkeySignature (SubkeySignature {}) = True
isSubkeySignature _ = False
toStrict :: L.ByteString -> S.ByteString
toStrict = foldr1 (<>) . L.toChunks
packetFromPublicRSAKey :: UTCTime -> MPI -> MPI -> Packet
packetFromPublicRSAKey notBefore n e =
PublicKeyPacket { version = 4
, timestamp = round $ utcTimeToPOSIXSeconds notBefore
, key_algorithm = RSA
, key = [('n',n),('e',e)]
, is_subkey = True
, v3_days_of_validity = Nothing
}
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
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 _ = ""
|