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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
{- git-annex remotes
-
- Copyright 2011 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Remote (
Remote,
uuid,
name,
storeKey,
retrieveKeyFile,
removeKey,
hasKey,
hasKeyCheap,
remoteTypes,
remoteList,
enabledRemoteList,
remoteMap,
uuidDescriptions,
byName,
prettyPrintUUIDs,
remotesWithUUID,
remotesWithoutUUID,
keyLocations,
keyPossibilities,
keyPossibilitiesTrusted,
nameToUUID,
showTriedRemotes,
showLocations,
forceTrust,
logStatus
) where
import qualified Data.Map as M
import Text.JSON
import Text.JSON.Generic
import Common.Annex
import Types.Remote
import qualified Annex
import Annex.UUID
import Logs.UUID
import Logs.Trust
import Logs.Location
import Remote.List
{- Map of UUIDs of Remotes and their names. -}
remoteMap :: Annex (M.Map UUID String)
remoteMap = M.fromList . map (\r -> (uuid r, name r)) .
filter (\r -> uuid r /= NoUUID) <$> remoteList
{- Map of UUIDs and their descriptions.
- The names of Remotes are added to suppliment any description that has
- been set for a repository. -}
uuidDescriptions :: Annex (M.Map UUID String)
uuidDescriptions = M.unionWith addName <$> uuidMap <*> remoteMap
addName :: String -> String -> String
addName desc n
| desc == n = desc
| null desc = n
| otherwise = n ++ " (" ++ desc ++ ")"
{- When a name is specified, looks up the remote matching that name.
- (Or it can be a UUID.) Only finds currently configured git remotes. -}
byName :: Maybe String -> Annex (Maybe Remote)
byName Nothing = return Nothing
byName (Just n) = do
res <- byName' n
case res of
Left e -> error e
Right r -> return $ Just r
byName' :: String -> Annex (Either String Remote)
byName' "" = return $ Left "no remote specified"
byName' n = do
match <- filter matching <$> remoteList
if null match
then return $ Left $ "there is no git remote named \"" ++ n ++ "\""
else return $ Right $ Prelude.head match
where
matching r = n == name r || toUUID n == uuid r
{- Looks up a remote by name (or by UUID, or even by description),
- and returns its UUID. Finds even remotes that are not configured in
- .git/config. -}
nameToUUID :: String -> Annex UUID
nameToUUID "." = getUUID -- special case for current repo
nameToUUID "" = error "no remote specified"
nameToUUID n = byName' n >>= go
where
go (Right r) = return $ uuid r
go (Left e) = fromMaybe (error e) <$> bydescription
bydescription = do
m <- uuidMap
case M.lookup n $ transform swap m of
Just u -> return $ Just u
Nothing -> return $ byuuid m
byuuid m = M.lookup (toUUID n) $ transform double m
transform a = M.fromList . map a . M.toList
swap (a, b) = (b, a)
double (a, _) = (a, a)
{- Pretty-prints a list of UUIDs of remotes, for human display.
-
- Shows descriptions from the uuid log, falling back to remote names,
- as some remotes may not be in the uuid log.
-
- When JSON is enabled, also generates a machine-readable description
- of the UUIDs. -}
prettyPrintUUIDs :: String -> [UUID] -> Annex String
prettyPrintUUIDs desc uuids = do
hereu <- getUUID
m <- uuidDescriptions
maybeShowJSON [(desc, map (jsonify m hereu) uuids)]
return $ unwords $ map (\u -> "\t" ++ prettify m hereu u ++ "\n") uuids
where
finddescription m u = M.findWithDefault "" u m
prettify m hereu u
| not (null d) = fromUUID u ++ " -- " ++ d
| otherwise = fromUUID u
where
ishere = hereu == u
n = finddescription m u
d
| null n && ishere = "here"
| ishere = addName n "here"
| otherwise = n
jsonify m hereu u = toJSObject
[ ("uuid", toJSON $ fromUUID u)
, ("description", toJSON $ finddescription m u)
, ("here", toJSON $ hereu == u)
]
{- Filters a list of remotes to ones that have the listed uuids. -}
remotesWithUUID :: [Remote] -> [UUID] -> [Remote]
remotesWithUUID rs us = filter (\r -> uuid r `elem` us) rs
{- Filters a list of remotes to ones that do not have the listed uuids. -}
remotesWithoutUUID :: [Remote] -> [UUID] -> [Remote]
remotesWithoutUUID rs us = filter (\r -> uuid r `notElem` us) rs
{- List of repository UUIDs that the location log indicates may have a key.
- Dead repositories are excluded. -}
keyLocations :: Key -> Annex [UUID]
keyLocations key = snd <$> (trustPartition DeadTrusted =<< loggedLocations key)
{- Cost ordered lists of remotes that the location log indicates
- may have a key.
-}
keyPossibilities :: Key -> Annex [Remote]
keyPossibilities key = fst <$> keyPossibilities' key []
{- Cost ordered lists of remotes that the location log indicates
- may have a key.
-
- Also returns a list of UUIDs that are trusted to have the key
- (some may not have configured remotes).
-}
keyPossibilitiesTrusted :: Key -> Annex ([Remote], [UUID])
keyPossibilitiesTrusted key = keyPossibilities' key =<< trustGet Trusted
keyPossibilities' :: Key -> [UUID] -> Annex ([Remote], [UUID])
keyPossibilities' key trusted = do
u <- getUUID
-- uuids of all remotes that are recorded to have the key
validuuids <- filter (/= u) <$> keyLocations key
-- note that validuuids is assumed to not have dups
let validtrusteduuids = validuuids `intersect` trusted
-- remotes that match uuids that have the key
allremotes <- enabledRemoteList
let validremotes = remotesWithUUID allremotes validuuids
return (sort validremotes, validtrusteduuids)
{- Displays known locations of a key. -}
showLocations :: Key -> [UUID] -> Annex ()
showLocations key exclude = do
u <- getUUID
uuids <- keyLocations key
untrusteduuids <- trustGet UnTrusted
let uuidswanted = filteruuids uuids (u:exclude++untrusteduuids)
let uuidsskipped = filteruuids uuids (u:exclude++uuidswanted)
ppuuidswanted <- Remote.prettyPrintUUIDs "wanted" uuidswanted
ppuuidsskipped <- Remote.prettyPrintUUIDs "skipped" uuidsskipped
showLongNote $ message ppuuidswanted ppuuidsskipped
where
filteruuids l x = filter (`notElem` x) l
message [] [] = "No other repository is known to contain the file."
message rs [] = "Try making some of these repositories available:\n" ++ rs
message [] us = "Also these untrusted repositories may contain the file:\n" ++ us
message rs us = message rs [] ++ message [] us
showTriedRemotes :: [Remote] -> Annex ()
showTriedRemotes [] = return ()
showTriedRemotes remotes =
showLongNote $ "Unable to access these remotes: " ++
(join ", " $ map name remotes)
forceTrust :: TrustLevel -> String -> Annex ()
forceTrust level remotename = do
u <- nameToUUID remotename
Annex.changeState $ \s ->
s { Annex.forcetrust = M.insert u level (Annex.forcetrust s) }
{- Used to log a change in a remote's having a key. The change is logged
- in the local repo, not on the remote. The process of transferring the
- key to the remote, or removing the key from it *may* log the change
- on the remote, but this cannot always be relied on. -}
logStatus :: Remote -> Key -> Bool -> Annex ()
logStatus remote key present = logChange key (uuid remote) status
where
status = if present then InfoPresent else InfoMissing
|
