git-annex/Command/P2P.hs
Joey Hess 3ab12ba923
implement p2p --link
This commit was sponsored by Riku Voipio.
2016-11-30 15:16:25 -04:00

82 lines
2.3 KiB
Haskell

{- git-annex command
-
- Copyright 2016 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.P2P where
import Command
import P2P.Address
import P2P.Auth
import Utility.AuthToken
import Git.Types
import qualified Git.Remote
import qualified Git.Command
cmd :: Command
cmd = command "p2p" SectionSetup
"configure peer-2-peer links between repositories"
paramNothing (seek <$$> optParser)
data P2POpts
= GenAddresses
| LinkRemote RemoteName
optParser :: CmdParamsDesc -> Parser P2POpts
optParser _ = genaddresses <|> linkremote
where
genaddresses = flag' GenAddresses
( long "gen-addresses"
<> help "generate addresses that allow accessing this repository over P2P networks"
)
linkremote = LinkRemote <$> strOption
( long "link"
<> metavar paramRemote
<> help "specify name to use for git remote"
)
seek :: P2POpts -> CommandSeek
seek GenAddresses = genAddresses =<< loadP2PAddresses
seek (LinkRemote name) = commandAction $
linkRemote (Git.Remote.makeLegalName name)
-- Only addresses are output to stdout, to allow scripting.
genAddresses :: [P2PAddress] -> Annex ()
genAddresses [] = giveup "No P2P networks are currrently available."
genAddresses addrs = do
authtoken <- liftIO $ genAuthToken 128
storeP2PAuthToken authtoken
earlyWarning "These addresses allow access to this git-annex repository. Only share them with people you trust with that access, using trusted communication channels!"
liftIO $ putStr $ unlines $
map formatP2PAddress $
map (`P2PAddressAuth` authtoken) addrs
-- Address is read from stdin, to avoid leaking it in shell history.
linkRemote :: RemoteName -> CommandStart
linkRemote remotename = do
showStart "p2p link" remotename
next $ next prompt
where
prompt = do
liftIO $ putStrLn ""
liftIO $ putStr "Enter address: "
liftIO $ hFlush stdout
s <- liftIO getLine
if null s
then do
liftIO $ hPutStrLn stderr "Nothing entered, giving up."
return False
else case unformatP2PAddress s of
Nothing -> do
liftIO $ hPutStrLn stderr "Unable to parse that address, please check its format and try again."
prompt
Just addr -> setup addr
setup (P2PAddressAuth addr authtoken) = do
storeP2PRemoteAuthToken addr authtoken
inRepo $ Git.Command.runBool
[ Param "remote", Param "add"
, Param remotename
, Param (formatP2PAddress addr)
]