18a6935e42
Checks the key's size and checksum. This is sorta expensive, but it avoids needing to add another round-trip to the protocol.
35 lines
783 B
Haskell
35 lines
783 B
Haskell
{- git-annex fields
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-
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- Copyright 2012 Joey Hess <joey@kitenet.net>
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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 Fields where
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import Common.Annex
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import qualified Annex
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import Data.Char
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{- A field, stored in Annex state, with a value sanity checker. -}
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data Field = Field
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{ fieldName :: String
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, fieldCheck :: String -> Bool
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}
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getField :: Field -> Annex (Maybe String)
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getField = Annex.getField . fieldName
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remoteUUID :: Field
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remoteUUID = Field "remoteuuid" $
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-- does it look like a UUID?
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all (\c -> isAlphaNum c || c == '-')
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associatedFile :: Field
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associatedFile = Field "associatedfile" $ \f ->
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-- is the file a safe relative filename?
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not (isAbsolute f) && not ("../" `isPrefixOf` f)
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direct :: Field
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direct = Field "direct" $ \f -> f == "1"
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