git-annex/Assistant/WebApp/Gpg.hs
2013-09-26 12:40:19 -04:00

81 lines
2.5 KiB
Haskell

{- git-annex webapp gpg stuff
-
- Copyright 2013 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
{-# LANGUAGE QuasiQuotes, TemplateHaskell, OverloadedStrings #-}
module Assistant.WebApp.Gpg where
import Assistant.WebApp.Common
import Utility.Gpg
import Utility.UserInfo
import qualified Git.Command
import qualified Git.Remote
import qualified Annex.Branch
import qualified Git.GCrypt
import Assistant.MakeRemote
import Logs.Remote
import qualified Data.Map as M
gpgKeyDisplay :: KeyId -> Maybe UserId -> Widget
gpgKeyDisplay keyid userid = [whamlet|
<span title="key id #{keyid}">
<i .icon-user></i> #
$maybe name <- userid
#{name}
$nothing
key id #{keyid}
|]
{- Generates a gpg user id that is not used by any existing secret key -}
newUserId :: IO UserId
newUserId = do
oldkeys <- secretKeys
username <- myUserName
let basekeyname = username ++ "'s git-annex encryption key"
return $ Prelude.head $ filter (\n -> M.null $ M.filter (== n) oldkeys)
( basekeyname
: map (\n -> basekeyname ++ show n) ([2..] :: [Int])
)
withNewSecretKey :: (KeyId -> Handler Html) -> Handler Html
withNewSecretKey use = do
userid <- liftIO $ newUserId
liftIO $ genSecretKey RSA "" userid maxRecommendedKeySize
results <- M.keys . M.filter (== userid) <$> liftIO secretKeys
case results of
[] -> error "Failed to generate gpg key!"
(key:_) -> use key
{- Tries to find the name used in remote.log for a gcrypt repository
- with a given uuid.
-
- The gcrypt remote may not be on that is listed in the local remote.log
- (or the info may be out of date), so this actually fetches the git-annex
- branch from the gcrypt remote and merges it in, and then looks up
- the name.
-}
getGCryptRemoteName :: UUID -> String -> Annex (Maybe Git.Remote.RemoteName)
getGCryptRemoteName u repoloc = do
tmpremote <- uniqueRemoteName "tmpgcryptremote" 0 <$> gitRepo
void $ inRepo $ Git.Command.runBool
[Params "remote add", Param tmpremote, Param $ Git.GCrypt.urlPrefix ++ repoloc]
mname <- ifM (inRepo $ Git.Command.runBool [Param "fetch", Param tmpremote])
( do
void $ Annex.Branch.forceUpdate
(M.lookup "name" <=< M.lookup u) <$> readRemoteLog
, return Nothing
)
void $ inRepo $ Git.Remote.remove tmpremote
return mname
whenGcryptInstalled :: Handler Html -> Handler Html
whenGcryptInstalled a = ifM (liftIO $ inPath "git-remote-gcrypt")
( a
, page "Need git-remote-gcrypt" (Just Configuration) $
$(widgetFile "configurators/needgcrypt")
)