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
|
{- A remote that provides hooks to run shell commands.
-
- Copyright 2011 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Remote.Hook (remote) where
import qualified Data.Map as M
import Common.Annex
import Types.Remote
import Types.Key
import Types.Creds
import qualified Git
import Config
import Config.Cost
import Annex.UUID
import Remote.Helper.Special
import Utility.Env
type Action = String
type HookName = String
remote :: RemoteType
remote = RemoteType {
typename = "hook",
enumerate = findSpecialRemotes "hooktype",
generate = gen,
setup = hookSetup
}
gen :: Git.Repo -> UUID -> RemoteConfig -> RemoteGitConfig -> Annex (Maybe Remote)
gen r u c gc = do
cst <- remoteCost gc expensiveRemoteCost
return $ Just $ specialRemote c
(simplyPrepare $ store hooktype)
(simplyPrepare $ retrieve hooktype)
(simplyPrepare $ remove hooktype)
(simplyPrepare $ checkKey r hooktype)
Remote {
uuid = u,
cost = cst,
name = Git.repoDescribe r,
storeKey = storeKeyDummy,
retrieveKeyFile = retreiveKeyFileDummy,
retrieveKeyFileCheap = retrieveCheap hooktype,
removeKey = removeKeyDummy,
checkPresent = checkPresentDummy,
checkPresentCheap = False,
whereisKey = Nothing,
remoteFsck = Nothing,
repairRepo = Nothing,
config = c,
localpath = Nothing,
repo = r,
gitconfig = gc,
readonly = False,
availability = GloballyAvailable,
remotetype = remote,
mkUnavailable = gen r u c $
gc { remoteAnnexHookType = Just "!dne!" },
getInfo = return [("hooktype", hooktype)],
claimUrl = Nothing,
checkUrl = const $ return Nothing
}
where
hooktype = fromMaybe (error "missing hooktype") $ remoteAnnexHookType gc
hookSetup :: Maybe UUID -> Maybe CredPair -> RemoteConfig -> Annex (RemoteConfig, UUID)
hookSetup mu _ c = do
u <- maybe (liftIO genUUID) return mu
let hooktype = fromMaybe (error "Specify hooktype=") $
M.lookup "hooktype" c
(c', _encsetup) <- encryptionSetup c
gitConfigSpecialRemote u c' "hooktype" hooktype
return (c', u)
hookEnv :: Action -> Key -> Maybe FilePath -> IO (Maybe [(String, String)])
hookEnv action k f = Just <$> mergeenv (fileenv f ++ keyenv)
where
mergeenv l = addEntries l <$> getEnvironment
envvar s v = ("ANNEX_" ++ s, v)
keyenv = catMaybes
[ Just $ envvar "KEY" (key2file k)
, Just $ envvar "ACTION" action
, envvar "HASH_1" <$> headMaybe hashbits
, envvar "HASH_2" <$> headMaybe (drop 1 hashbits)
]
fileenv Nothing = []
fileenv (Just file) = [envvar "FILE" file]
hashbits = map takeDirectory $ splitPath $ hashDirMixed k
lookupHook :: HookName -> Action -> Annex (Maybe String)
lookupHook hookname action = do
command <- getConfig (annexConfig hook) ""
if null command
then do
fallback <- getConfig (annexConfig hookfallback) ""
if null fallback
then do
warning $ "missing configuration for " ++ hook ++ " or " ++ hookfallback
return Nothing
else return $ Just fallback
else return $ Just command
where
hook = hookname ++ "-" ++ action ++ "-hook"
hookfallback = hookname ++ "-hook"
runHook :: HookName -> Action -> Key -> Maybe FilePath -> Annex Bool -> Annex Bool
runHook hook action k f a = maybe (return False) run =<< lookupHook hook action
where
run command = do
showOutput -- make way for hook output
ifM (liftIO $ boolSystemEnv "sh" [Param "-c", Param command] =<< hookEnv action k f)
( a
, do
warning $ hook ++ " hook exited nonzero!"
return False
)
store :: HookName -> Storer
store h = fileStorer $ \k src _p ->
runHook h "store" k (Just src) $ return True
retrieve :: HookName -> Retriever
retrieve h = fileRetriever $ \d k _p ->
unlessM (runHook h "retrieve" k (Just d) $ return True) $
error "failed to retrieve content"
retrieveCheap :: HookName -> Key -> FilePath -> Annex Bool
retrieveCheap _ _ _ = return False
remove :: HookName -> Remover
remove h k = runHook h "remove" k Nothing $ return True
checkKey :: Git.Repo -> HookName -> CheckPresent
checkKey r h k = do
showAction $ "checking " ++ Git.repoDescribe r
v <- lookupHook h action
liftIO $ check v
where
action = "checkpresent"
findkey s = key2file k `elem` lines s
check Nothing = error $ action ++ " hook misconfigured"
check (Just hook) = do
environ <- hookEnv action k Nothing
findkey <$> readProcessEnv "sh" ["-c", hook] environ
|
