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{- git-remote-gcrypt support
-
- https://github.com/blake2-ppc/git-remote-gcrypt
-
- Copyright 2013 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Git.GCrypt where
import Common
import Git.Types
import Git.Construct
import Git.Config
urlPrefix :: String
urlPrefix = "gcrypt::"
isEncrypted :: Repo -> Bool
isEncrypted Repo { location = Url url } = urlPrefix `isPrefixOf` show url
isEncrypted _ = False
{- The first Repo is the git repository that has the second Repo
- as one of its remotes.
-
- When the remote Repo uses gcrypt, returns the actual underlying
- git repository that gcrypt is using to store its data.
-
- Throws an exception if an url is invalid or the repo does not use
- gcrypt.
-}
encryptedRepo :: Repo -> Repo -> IO Repo
encryptedRepo baserepo = go
where
go Repo { location = Url url }
| urlPrefix `isPrefixOf` u =
fromRemoteLocation (drop plen u) baserepo
| otherwise = notencrypted
where
u = show url
plen = length urlPrefix
go _ = notencrypted
notencrypted = error "not a gcrypt encrypted repository"
{- gcrypt gives each encrypted repository a uique gcrypt-id,
- which is stored in the repository (in encrypted form)
- and cached in a per-remote gcrypt-id configuration setting. -}
remoteRepoId :: Repo -> Repo -> Maybe String
remoteRepoId baserepo remote = do
name <- remoteName remote
let key = "remote." ++ name ++ ".gcrypt-id"
getMaybe key baserepo
|
