d9b4bf4224
I anticipate lots of external special remote programs will neglect implementing this. Still, it's the right thing to do to assume that some of them may write files out of order. Probably most external special remotes will not be used with a proxy. When someone is using one with a proxy, they can always get it fixed to send ORDERED.
368 lines
11 KiB
Haskell
368 lines
11 KiB
Haskell
{- Amazon Glacier remotes.
|
|
-
|
|
- Copyright 2012-2021 Joey Hess <id@joeyh.name>
|
|
-
|
|
- Licensed under the GNU AGPL version 3 or higher.
|
|
-}
|
|
|
|
{-# LANGUAGE RankNTypes #-}
|
|
|
|
module Remote.Glacier (remote, jobList, checkSaneGlacierCommand) where
|
|
|
|
import qualified Data.Map as M
|
|
import qualified Data.Text as T
|
|
import qualified Data.ByteString as S
|
|
import qualified Data.ByteString.Lazy as L
|
|
|
|
import Annex.Common
|
|
import Types.Remote
|
|
import qualified Git
|
|
import Config
|
|
import Config.Cost
|
|
import Annex.SpecialRemote.Config
|
|
import Remote.Helper.Special
|
|
import Remote.Helper.ExportImport
|
|
import qualified Remote.Helper.AWS as AWS
|
|
import Creds
|
|
import Utility.Metered
|
|
import Annex.UUID
|
|
import Utility.Env
|
|
import Types.ProposedAccepted
|
|
import Utility.Hash (IncrementalVerifier)
|
|
|
|
type Vault = String
|
|
type Archive = FilePath
|
|
|
|
remote :: RemoteType
|
|
remote = specialRemoteType $ RemoteType
|
|
{ typename = "glacier"
|
|
, enumerate = const (findSpecialRemotes "glacier")
|
|
, generate = gen
|
|
, configParser = mkRemoteConfigParser
|
|
[ optionalStringParser datacenterField
|
|
(FieldDesc "S3 datacenter to use")
|
|
, optionalStringParser vaultField
|
|
(FieldDesc "name to use for vault")
|
|
, optionalStringParser fileprefixField
|
|
(FieldDesc "prefix to add to filenames in the vault")
|
|
, optionalStringParser AWS.s3credsField HiddenField
|
|
]
|
|
, setup = glacierSetup
|
|
, exportSupported = exportUnsupported
|
|
, importSupported = importUnsupported
|
|
, thirdPartyPopulated = False
|
|
}
|
|
|
|
datacenterField :: RemoteConfigField
|
|
datacenterField = Accepted "datacenter"
|
|
|
|
vaultField :: RemoteConfigField
|
|
vaultField = Accepted "vault"
|
|
|
|
fileprefixField :: RemoteConfigField
|
|
fileprefixField = Accepted "fileprefix"
|
|
|
|
gen :: Git.Repo -> UUID -> RemoteConfig -> RemoteGitConfig -> RemoteStateHandle -> Annex (Maybe Remote)
|
|
gen r u rc gc rs = do
|
|
c <- parsedRemoteConfig remote rc
|
|
cst <- remoteCost gc c veryExpensiveRemoteCost
|
|
return (new c cst)
|
|
where
|
|
new c cst = Just $ specialRemote' specialcfg c
|
|
(store this)
|
|
(retrieve this)
|
|
(remove this)
|
|
(checkKey this)
|
|
this
|
|
where
|
|
this = Remote
|
|
{ uuid = u
|
|
, cost = cst
|
|
, name = Git.repoDescribe r
|
|
, storeKey = storeKeyDummy
|
|
, retrieveKeyFile = retrieveKeyFileDummy
|
|
, retrieveKeyFileInOrder = pure True
|
|
, retrieveKeyFileCheap = Nothing
|
|
-- glacier-cli does not follow redirects and does
|
|
-- not support file://, as far as we know, but
|
|
-- there's no guarantee that will continue to be
|
|
-- the case, so require verifiable keys.
|
|
, retrievalSecurityPolicy = mkRetrievalVerifiableKeysSecure gc
|
|
, removeKey = removeKeyDummy
|
|
, lockContent = Nothing
|
|
, checkPresent = checkPresentDummy
|
|
, checkPresentCheap = False
|
|
, exportActions = exportUnsupported
|
|
, importActions = importUnsupported
|
|
, whereisKey = Nothing
|
|
, remoteFsck = Nothing
|
|
, repairRepo = Nothing
|
|
, config = c
|
|
, getRepo = return r
|
|
, gitconfig = gc
|
|
, localpath = Nothing
|
|
, readonly = False
|
|
, appendonly = False
|
|
, untrustworthy = False
|
|
, availability = pure GloballyAvailable
|
|
, remotetype = remote
|
|
, mkUnavailable = return Nothing
|
|
, getInfo = includeCredsInfo c (AWS.creds u) $
|
|
[ ("glacier vault", getVault c) ]
|
|
, claimUrl = Nothing
|
|
, checkUrl = Nothing
|
|
, remoteStateHandle = rs
|
|
}
|
|
specialcfg = (specialRemoteCfg c)
|
|
-- Disabled until jobList gets support for chunks.
|
|
{ chunkConfig = NoChunks
|
|
}
|
|
|
|
glacierSetup :: SetupStage -> Maybe UUID -> Maybe CredPair -> RemoteConfig -> RemoteGitConfig -> Annex (RemoteConfig, UUID)
|
|
glacierSetup ss mu mcreds c gc = do
|
|
u <- maybe (liftIO genUUID) return mu
|
|
glacierSetup' ss u mcreds c gc
|
|
glacierSetup' :: SetupStage -> UUID -> Maybe CredPair -> RemoteConfig -> RemoteGitConfig -> Annex (RemoteConfig, UUID)
|
|
glacierSetup' ss u mcreds c gc = do
|
|
(c', encsetup) <- encryptionSetup (c `M.union` defaults) gc
|
|
pc <- either giveup return . parseRemoteConfig c'
|
|
=<< configParser remote c'
|
|
c'' <- setRemoteCredPair ss encsetup pc gc (AWS.creds u) mcreds
|
|
pc' <- either giveup return . parseRemoteConfig c''
|
|
=<< configParser remote c''
|
|
case ss of
|
|
Init -> genVault pc' gc u
|
|
_ -> return ()
|
|
gitConfigSpecialRemote u c'' [("glacier", "true")]
|
|
return (c'', u)
|
|
where
|
|
remotename = fromJust (lookupName c)
|
|
defvault = remotename ++ "-" ++ fromUUID u
|
|
defaults = M.fromList
|
|
[ (datacenterField, Proposed $ T.unpack $ AWS.defaultRegion AWS.Glacier)
|
|
, (vaultField, Proposed defvault)
|
|
]
|
|
|
|
store :: Remote -> Storer
|
|
store r k b p = do
|
|
checkNonEmpty k
|
|
byteStorer (store' r) k b p
|
|
|
|
checkNonEmpty :: Key -> Annex ()
|
|
checkNonEmpty k
|
|
| fromKey keySize k == Just 0 =
|
|
giveup "Cannot store empty files in Glacier."
|
|
| otherwise = return ()
|
|
|
|
store' :: Remote -> Key -> L.ByteString -> MeterUpdate -> Annex ()
|
|
store' r k b p = go =<< glacierEnv c gc u
|
|
where
|
|
c = config r
|
|
gc = gitconfig r
|
|
u = uuid r
|
|
params = glacierParams c
|
|
[ Param "archive"
|
|
, Param "upload"
|
|
, Param "--name", Param $ archive r k
|
|
, Param $ getVault $ config r
|
|
, Param "-"
|
|
]
|
|
go Nothing = giveup "Glacier not usable."
|
|
go (Just e) =
|
|
let cmd = (proc "glacier" (toCommand params)) { env = Just e }
|
|
{ std_in = CreatePipe }
|
|
in liftIO $ withCreateProcess cmd (go' cmd)
|
|
go' cmd (Just hin) _ _ pid = do
|
|
meteredWrite p (S.hPut hin) b
|
|
hClose hin
|
|
forceSuccessProcess cmd pid
|
|
go' _ _ _ _ _ = error "internal"
|
|
|
|
retrieve :: forall a. Remote -> Key -> MeterUpdate -> RawFilePath -> Maybe IncrementalVerifier -> (ContentSource -> Annex a) -> Annex a
|
|
retrieve = byteRetriever . retrieve'
|
|
|
|
retrieve' :: forall a. Remote -> Key -> (L.ByteString -> Annex a) -> Annex a
|
|
retrieve' r k sink = go =<< glacierEnv c gc u
|
|
where
|
|
c = config r
|
|
gc = gitconfig r
|
|
u = uuid r
|
|
params = glacierParams c
|
|
[ Param "archive"
|
|
, Param "retrieve"
|
|
, Param "-o-"
|
|
, Param $ getVault $ config r
|
|
, Param $ archive r k
|
|
]
|
|
go Nothing = giveup "cannot retrieve from glacier"
|
|
go (Just environ) = do
|
|
let p = (proc "glacier" (toCommand params))
|
|
{ env = Just environ
|
|
, std_out = CreatePipe
|
|
}
|
|
bracketIO (createProcess p) cleanupProcess (go' p)
|
|
go' p (_, Just h, _, pid) = do
|
|
let cleanup = liftIO $ do
|
|
hClose h
|
|
forceSuccessProcess p pid
|
|
flip finally cleanup $ do
|
|
-- Glacier cannot store empty files, so if
|
|
-- the output is empty, the content is not
|
|
-- available yet.
|
|
whenM (liftIO $ hIsEOF h) $
|
|
giveup "Content is not available from glacier yet. Recommend you wait up to 4 hours, and then run this command again."
|
|
sink =<< liftIO (L.hGetContents h)
|
|
go' _ _ = error "internal"
|
|
|
|
remove :: Remote -> Remover
|
|
remove r _proof k = unlessM go $
|
|
giveup "removal from glacier failed"
|
|
where
|
|
go = glacierAction r
|
|
[ Param "archive"
|
|
, Param "delete"
|
|
, Param $ getVault $ config r
|
|
, Param $ archive r k
|
|
]
|
|
|
|
checkKey :: Remote -> CheckPresent
|
|
checkKey r k = go =<< glacierEnv (config r) (gitconfig r) (uuid r)
|
|
where
|
|
go Nothing = giveup "cannot check glacier"
|
|
go (Just e) = do
|
|
{- glacier checkpresent outputs the archive name to stdout if
|
|
- it's present. -}
|
|
s <- liftIO $ readProcessEnv "glacier" (toCommand params) (Just e)
|
|
let probablypresent = serializeKey k `elem` lines s
|
|
if probablypresent
|
|
then giveup untrusted
|
|
else return False
|
|
|
|
params = glacierParams (config r)
|
|
[ Param "archive"
|
|
, Param "checkpresent"
|
|
, Param $ getVault $ config r
|
|
, Param "--quiet"
|
|
, Param $ archive r k
|
|
]
|
|
|
|
untrusted = unlines
|
|
[ "Glacier's inventory says it has a copy."
|
|
, "However, the inventory could be out of date, if it was recently removed."
|
|
]
|
|
|
|
glacierAction :: Remote -> [CommandParam] -> Annex Bool
|
|
glacierAction r = runGlacier (config r) (gitconfig r) (uuid r)
|
|
|
|
runGlacier :: ParsedRemoteConfig -> RemoteGitConfig -> UUID -> [CommandParam] -> Annex Bool
|
|
runGlacier c gc u params = go =<< glacierEnv c gc u
|
|
where
|
|
go Nothing = return False
|
|
go (Just e) = liftIO $
|
|
boolSystemEnv "glacier" (glacierParams c params) (Just e)
|
|
|
|
glacierParams :: ParsedRemoteConfig -> [CommandParam] -> [CommandParam]
|
|
glacierParams c params = datacenter:params
|
|
where
|
|
datacenter = Param $ "--region=" ++
|
|
fromMaybe (giveup "Missing datacenter configuration")
|
|
(getRemoteConfigValue datacenterField c)
|
|
|
|
glacierEnv :: ParsedRemoteConfig -> RemoteGitConfig -> UUID -> Annex (Maybe [(String, String)])
|
|
glacierEnv c gc u = do
|
|
liftIO checkSaneGlacierCommand
|
|
go =<< getRemoteCredPairFor "glacier" c gc creds
|
|
where
|
|
go Nothing = return Nothing
|
|
go (Just (user, pass)) = do
|
|
e <- liftIO getEnvironment
|
|
return $ Just $ addEntries [(uk, user), (pk, pass)] e
|
|
|
|
creds = AWS.creds u
|
|
(uk, pk) = credPairEnvironment creds
|
|
|
|
getVault :: ParsedRemoteConfig -> Vault
|
|
getVault = fromMaybe (giveup "Missing vault configuration")
|
|
. getRemoteConfigValue vaultField
|
|
|
|
archive :: Remote -> Key -> Archive
|
|
archive r k = fileprefix ++ serializeKey k
|
|
where
|
|
fileprefix = fromMaybe "" $
|
|
getRemoteConfigValue fileprefixField $ config r
|
|
|
|
genVault :: ParsedRemoteConfig -> RemoteGitConfig -> UUID -> Annex ()
|
|
genVault c gc u = unlessM (runGlacier c gc u params) $
|
|
giveup "Failed creating glacier vault."
|
|
where
|
|
params =
|
|
[ Param "vault"
|
|
, Param "create"
|
|
, Param $ getVault c
|
|
]
|
|
|
|
{- Partitions the input list of keys into ones which have
|
|
- glacier retieval jobs that have succeeded, or failed.
|
|
-
|
|
- A complication is that `glacier job list` will display the encrypted
|
|
- keys when the remote is encrypted.
|
|
-
|
|
- Dealing with encrypted chunked keys would be tricky. However, there
|
|
- seems to be no benefit to using chunking with glacier, so chunking is
|
|
- not supported.
|
|
-}
|
|
jobList :: Remote -> [Key] -> Annex ([Key], [Key])
|
|
jobList r keys = go =<< glacierEnv (config r) (gitconfig r) (uuid r)
|
|
where
|
|
params = [ Param "job", Param "list" ]
|
|
nada = ([], [])
|
|
myvault = getVault $ config r
|
|
|
|
go Nothing = return nada
|
|
go (Just e) = do
|
|
v <- liftIO $ catchMaybeIO $
|
|
readProcessEnv "glacier" (toCommand params) (Just e)
|
|
maybe (return nada) extract v
|
|
|
|
extract s = do
|
|
let result@(succeeded, failed) =
|
|
parse nada $ (map words . lines) s
|
|
if result == nada
|
|
then return nada
|
|
else do
|
|
enckeys <- forM keys $ \k ->
|
|
maybe k (\(_, enck) -> enck k)
|
|
<$> cipherKey (config r) (gitconfig r)
|
|
let keymap = M.fromList $ zip enckeys keys
|
|
let convert = mapMaybe (`M.lookup` keymap)
|
|
return (convert succeeded, convert failed)
|
|
|
|
parse c [] = c
|
|
parse c@(succeeded, failed) ((status:_date:vault:key:[]):rest)
|
|
| vault == myvault =
|
|
case deserializeKey key of
|
|
Nothing -> parse c rest
|
|
Just k
|
|
| "a/d" `isPrefixOf` status ->
|
|
parse (k:succeeded, failed) rest
|
|
| "a/e" `isPrefixOf` status ->
|
|
parse (succeeded, k:failed) rest
|
|
| otherwise ->
|
|
parse c rest
|
|
parse c (_:rest) = parse c rest
|
|
|
|
-- boto's version of glacier exits 0 when given a parameter it doesn't
|
|
-- understand. See https://github.com/boto/boto/issues/2942
|
|
checkSaneGlacierCommand :: IO ()
|
|
checkSaneGlacierCommand =
|
|
whenM ((Nothing /=) <$> catchMaybeIO shouldfail) $
|
|
giveup wrongcmd
|
|
where
|
|
test = proc "glacier" ["--compatibility-test-git-annex"]
|
|
shouldfail = withNullHandle $ \nullh ->
|
|
let p = test
|
|
{ std_out = UseHandle nullh
|
|
, std_err = UseHandle nullh
|
|
}
|
|
in withCreateProcess p $ \_ _ _ -> forceSuccessProcess p
|
|
wrongcmd = "The glacier program in PATH seems to be from boto, not glacier-cli. Cannot use this program."
|