61 lines
1.9 KiB
Haskell
61 lines
1.9 KiB
Haskell
{- git-annex remote access with ssh
|
|
-
|
|
- Copyright 2011 Joey Hess <joey@kitenet.net>
|
|
-
|
|
- Licensed under the GNU GPL version 3 or higher.
|
|
-}
|
|
|
|
module Utility.Ssh where
|
|
|
|
import Control.Monad.State (liftIO)
|
|
|
|
import qualified Git
|
|
import Utility.SafeCommand
|
|
import Types
|
|
import Config
|
|
|
|
{- Generates parameters to ssh to a repository's host and run a command.
|
|
- Caller is responsible for doing any neccessary shellEscaping of the
|
|
- passed command. -}
|
|
sshToRepo :: Git.Repo -> [CommandParam] -> Annex [CommandParam]
|
|
sshToRepo repo sshcmd = do
|
|
s <- getConfig repo "ssh-options" ""
|
|
let sshoptions = map Param (words s)
|
|
let sshport = case Git.urlPort repo of
|
|
Nothing -> []
|
|
Just p -> [Param "-p", Param (show p)]
|
|
let sshhost = Param $ Git.urlHostUser repo
|
|
return $ sshoptions ++ sshport ++ [sshhost] ++ sshcmd
|
|
|
|
{- Generates parameters to run a git-annex-shell command on a remote
|
|
- repository. -}
|
|
git_annex_shell :: Git.Repo -> String -> [CommandParam] -> Annex (Maybe (FilePath, [CommandParam]))
|
|
git_annex_shell r command params
|
|
| not $ Git.repoIsUrl r = return $ Just (shellcmd, shellopts)
|
|
| Git.repoIsSsh r = do
|
|
sshparams <- sshToRepo r [Param sshcmd]
|
|
return $ Just ("ssh", sshparams)
|
|
| otherwise = return Nothing
|
|
where
|
|
dir = Git.workTree r
|
|
shellcmd = "git-annex-shell"
|
|
shellopts = Param command : File dir : params
|
|
sshcmd = shellcmd ++ " " ++
|
|
unwords (map shellEscape $ toCommand shellopts)
|
|
|
|
{- Uses a supplied function (such as boolSystem) to run a git-annex-shell
|
|
- command on a remote.
|
|
-
|
|
- Or, if the remote does not support running remote commands, returns
|
|
- a specified error value. -}
|
|
onRemote
|
|
:: Git.Repo
|
|
-> (FilePath -> [CommandParam] -> IO a, a)
|
|
-> String
|
|
-> [CommandParam]
|
|
-> Annex a
|
|
onRemote r (with, errorval) command params = do
|
|
s <- git_annex_shell r command params
|
|
case s of
|
|
Just (c, ps) -> liftIO $ with c ps
|
|
Nothing -> return errorval
|