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