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{- git-annex command
-
- Copyright 2010 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.RecvKey where
import Common.Annex
import Command
import Annex.Content
import Annex.Action
import Annex
import Utility.Rsync
import Logs.Transfer
import Command.SendKey (fieldTransfer)
import qualified CmdLine.GitAnnexShell.Fields as Fields
import qualified Types.Key
import qualified Types.Backend
import qualified Backend
cmd :: Command
cmd = noCommit $ command "recvkey" SectionPlumbing
"runs rsync in server mode to receive content"
paramKey (withParams seek)
seek :: CmdParams -> CommandSeek
seek = withKeys start
start :: Key -> CommandStart
start key = fieldTransfer Download key $ \_p ->
ifM (getViaTmp key go)
( do
-- forcibly quit after receiving one key,
-- and shutdown cleanly
_ <- shutdown True
return True
, return False
)
where
go tmp = do
opts <- filterRsyncSafeOptions . maybe [] words
<$> getField "RsyncOptions"
ok <- liftIO $ rsyncServerReceive (map Param opts) tmp
-- The file could have been received with permissions that
-- do not allow reading it, so this is done before the
-- directcheck.
freezeContent tmp
if ok
then ifM (isJust <$> Fields.getField Fields.direct)
( directcheck tmp
, return True
)
else return False
{- If the sending repository uses direct mode, the file
- it sends could be modified as it's sending it. So check
- that the right size file was received, and that the key/value
- Backend is happy with it. -}
directcheck tmp = do
oksize <- case Types.Key.keySize key of
Nothing -> return True
Just size -> do
size' <- liftIO $ getFileSize tmp
return $ size == size'
if oksize
then case Backend.maybeLookupBackendName (Types.Key.keyBackendName key) of
Nothing -> do
warning "recvkey: received key from direct mode repository using unknown backend; cannot check; discarding"
return False
Just backend -> maybe (return True) runfsck
(Types.Backend.fsckKey backend)
else do
warning "recvkey: received key with wrong size; discarding"
return False
where
runfsck check = ifM (check key tmp)
( return True
, do
warning "recvkey: received key from direct mode repository seems to have changed as it was transferred; discarding"
return False
)
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