1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
{- Credentials storage
-
- Copyright 2012 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
{-# LANGUAGE CPP #-}
module Creds where
import Common.Annex
import Annex.Perms
import Utility.FileMode
import Crypto
import Types.Remote (RemoteConfig, RemoteConfigKey)
import Remote.Helper.Encryptable (remoteCipher, embedCreds)
import Utility.Env (setEnv)
import System.Environment
import qualified Data.ByteString.Lazy.Char8 as L
import qualified Data.Map as M
import Utility.Base64
type Creds = String -- can be any data
type CredPair = (String, String) -- login, password
{- A CredPair can be stored in a file, or in the environment, or perhaps
- in a remote's configuration. -}
data CredPairStorage = CredPairStorage
{ credPairFile :: FilePath
, credPairEnvironment :: (String, String)
, credPairRemoteKey :: Maybe RemoteConfigKey
}
{- Stores creds in a remote's configuration, if the remote allows
- that. Otherwise, caches them locally. -}
setRemoteCredPair :: RemoteConfig -> CredPairStorage -> Annex RemoteConfig
setRemoteCredPair c storage = go =<< getRemoteCredPair c storage
where
go (Just creds)
| embedCreds c = case credPairRemoteKey storage of
Nothing -> localcache creds
Just key -> storeconfig creds key =<< remoteCipher c
| otherwise = localcache creds
go Nothing = return c
localcache creds = do
writeCacheCredPair creds storage
return c
storeconfig creds key (Just cipher) = do
s <- liftIO $ encrypt (GpgOpts []) cipher
(feedBytes $ L.pack $ encodeCredPair creds)
(readBytes $ return . L.unpack)
return $ M.insert key (toB64 s) c
storeconfig creds key Nothing =
return $ M.insert key (toB64 $ encodeCredPair creds) c
{- Gets a remote's credpair, from the environment if set, otherwise
- from the cache in gitAnnexCredsDir, or failing that, from the
- value in RemoteConfig. -}
getRemoteCredPairFor :: String -> RemoteConfig -> CredPairStorage -> Annex (Maybe CredPair)
getRemoteCredPairFor this c storage = maybe missing (return . Just) =<< getRemoteCredPair c storage
where
(loginvar, passwordvar) = credPairEnvironment storage
missing = do
warning $ unwords
[ "Set both", loginvar
, "and", passwordvar
, "to use", this
]
return Nothing
getRemoteCredPair :: RemoteConfig -> CredPairStorage -> Annex (Maybe CredPair)
getRemoteCredPair c storage = maybe fromcache (return . Just) =<< fromenv
where
fromenv = liftIO $ getEnvCredPair storage
fromcache = maybe fromconfig (return . Just) =<< readCacheCredPair storage
fromconfig = case credPairRemoteKey storage of
Just key -> do
mcipher <- remoteCipher c
case (M.lookup key c, mcipher) of
(Nothing, _) -> return Nothing
(Just enccreds, Just cipher) -> do
creds <- liftIO $ decrypt cipher
(feedBytes $ L.pack $ fromB64 enccreds)
(readBytes $ return . L.unpack)
fromcreds creds
(Just bcreds, Nothing) ->
fromcreds $ fromB64 bcreds
Nothing -> return Nothing
fromcreds creds = case decodeCredPair creds of
Just credpair -> do
writeCacheCredPair credpair storage
return $ Just credpair
_ -> error "bad creds"
{- Gets a CredPair from the environment. -}
getEnvCredPair :: CredPairStorage -> IO (Maybe CredPair)
getEnvCredPair storage = liftM2 (,)
<$> get uenv
<*> get penv
where
(uenv, penv) = credPairEnvironment storage
get = catchMaybeIO . getEnv
{- Stores a CredPair in the environment. -}
setEnvCredPair :: CredPair -> CredPairStorage -> IO ()
#ifndef __WINDOWS__
setEnvCredPair (l, p) storage = do
set uenv l
set penv p
where
(uenv, penv) = credPairEnvironment storage
set var val = void $ setEnv var val True
#else
setEnvCredPair _ _ = error "setEnvCredPair TODO"
#endif
writeCacheCredPair :: CredPair -> CredPairStorage -> Annex ()
writeCacheCredPair credpair storage =
writeCacheCreds (encodeCredPair credpair) (credPairFile storage)
{- Stores the creds in a file inside gitAnnexCredsDir that only the user
- can read. -}
writeCacheCreds :: Creds -> FilePath -> Annex ()
writeCacheCreds creds file = do
d <- fromRepo gitAnnexCredsDir
createAnnexDirectory d
liftIO $ writeFileProtected (d </> file) creds
readCacheCredPair :: CredPairStorage -> Annex (Maybe CredPair)
readCacheCredPair storage = maybe Nothing decodeCredPair
<$> readCacheCreds (credPairFile storage)
readCacheCreds :: FilePath -> Annex (Maybe Creds)
readCacheCreds file = do
d <- fromRepo gitAnnexCredsDir
let f = d </> file
liftIO $ catchMaybeIO $ readFile f
encodeCredPair :: CredPair -> Creds
encodeCredPair (l, p) = unlines [l, p]
decodeCredPair :: Creds -> Maybe CredPair
decodeCredPair creds = case lines creds of
l:p:[] -> Just (l, p)
_ -> Nothing
|
