From 920df251756c5de589f3a012778b714c32aac76b Mon Sep 17 00:00:00 2001 From: Gregor Kleen Date: Fri, 3 Jul 2015 22:49:07 +0200 Subject: Additional xmonad libs --- .xmonad/lib/XMonad/Prompt/MySsh.hs | 241 +++++++++++++++++++++++++++++++++++++ 1 file changed, 241 insertions(+) create mode 100644 .xmonad/lib/XMonad/Prompt/MySsh.hs (limited to '.xmonad/lib/XMonad/Prompt/MySsh.hs') diff --git a/.xmonad/lib/XMonad/Prompt/MySsh.hs b/.xmonad/lib/XMonad/Prompt/MySsh.hs new file mode 100644 index 0000000..e6ea042 --- /dev/null +++ b/.xmonad/lib/XMonad/Prompt/MySsh.hs @@ -0,0 +1,241 @@ +module XMonad.Prompt.MySsh + ( -- * Usage + -- $usage + sshPrompt, + Ssh, + Override (..), + mkOverride, + Conn (..), + moshCmd, + moshCmd', + sshCmd, + inTmux, + withEnv + ) where + +import XMonad +import XMonad.Util.Run +import XMonad.Prompt + +import System.Directory +import System.Environment +import qualified Control.Exception as E + +import Control.Monad +import Data.Maybe + +import Text.Parsec.String +import Text.Parsec +import Data.Char (isSpace) + +econst :: Monad m => a -> E.IOException -> m a +econst = const . return + +-- $usage +-- 1. In your @~\/.xmonad\/xmonad.hs@: +-- +-- > import XMonad.Prompt +-- > import XMonad.Prompt.Ssh +-- +-- 2. In your keybindings add something like: +-- +-- > , ((modm .|. controlMask, xK_s), sshPrompt defaultXPConfig) +-- +-- Keep in mind, that if you want to use the completion you have to +-- disable the "HashKnownHosts" option in your ssh_config +-- +-- For detailed instruction on editing the key binding see +-- "XMonad.Doc.Extending#Editing_key_bindings". + +data Override = Override + { oUser :: Maybe String + , oHost :: String + , oPort :: Maybe Int + , oCommand :: Conn -> String + } + +mkOverride = Override { oUser = Nothing, oHost = "", oPort = Nothing, oCommand = sshCmd } +sshCmd c = concat + [ "ssh -t " + , if isJust $ cUser c then (fromJust $ cUser c) ++ "@" else "" + , cHost c + , if isJust $ cPort c then " -p " ++ (show $ fromJust $ cPort c) else "" + , " -- " + , cCommand c + ] +moshCmd c = concat + [ "mosh " + , if isJust $ cUser c then (fromJust $ cUser c) ++ "@" else "" + , cHost c + , if isJust $ cPort c then " --ssh=\"ssh -p " ++ (show $ fromJust $ cPort c) ++ "\"" else "" + , " -- " + , cCommand c + ] +moshCmd' p c = concat + [ "mosh " + , "--server=" ++ p ++ " " + , if isJust $ cUser c then (fromJust $ cUser c) ++ "@" else "" + , cHost c + , if isJust $ cPort c then " --ssh=\"ssh -p " ++ (show $ fromJust $ cPort c) ++ "\"" else "" + , " -- " + , cCommand c + ] +inTmux c = c { cCommand = "tmux new-session \"" ++ (cCommand c) ++ "\"" } +withEnv :: [(String, String)] -> Conn -> Conn +withEnv envs c = c { cCommand = "env" ++ (concat $ map (\(n, v) -> ' ' : (n ++ "=" ++ v)) envs) ++ " " ++ (cCommand c) } + +data Conn = Conn + { cUser :: Maybe String + , cHost :: String + , cPort :: Maybe Int + , cCommand :: String + } deriving (Eq, Show, Read) + +data Ssh = Ssh + +instance XPrompt Ssh where + showXPrompt Ssh = "SSH to: " + commandToComplete _ c = c + nextCompletion _ = getNextCompletion + +toConn :: String -> Maybe Conn +toConn = toConn' . parse connParser "(unknown)" +toConn' :: Either ParseError Conn -> Maybe Conn +toConn' (Left _) = Nothing +toConn' (Right a) = Just a + +connParser :: Parser Conn +connParser = do + spaces + user' <- optionMaybe $ try $ do + str <- many1 $ satisfy (\c -> (not $ isSpace c) && (c /= '@')) + char '@' + return str + host' <- many1 $ satisfy (not . isSpace) + port' <- optionMaybe $ try $ do + space + string "-p" + spaces + int <- many1 digit + (space >> return ()) <|> eof + return $ (read int :: Int) + spaces + command' <- many anyChar + eof + return $ Conn + { cHost = host' + , cUser = user' + , cPort = port' + , cCommand = command' + } + +sshPrompt :: [Override] -> XPConfig -> X () +sshPrompt o c = do + sc <- io sshComplList + mkXPrompt Ssh c (mkComplFunFromList sc) $ ssh o + +ssh :: [Override] -> String -> X () +ssh overrides str = do + let cmd = applyOverrides overrides str + --liftIO $ putStr "SSH Command: " + --liftIO $ putStrLn cmd + runInTerm "" cmd + +applyOverrides :: [Override] -> String -> String +applyOverrides [] str = "ssh " ++ str +applyOverrides (o:os) str = case (applyOverride o str) of + Just str -> str + Nothing -> applyOverrides os str + +applyOverride :: Override -> String -> Maybe String +applyOverride o str = let + conn = toConn str + in + if isNothing conn then Nothing else + case (fromJust conn) `matches` o of + True -> Just $ (oCommand o) (fromJust conn) + False -> Nothing + +matches :: Conn -> Override -> Bool +a `matches` b = and + [ justBool (cUser a) (oUser b) (==) + , (cHost a) == (oHost b) + , justBool (cPort a) (oPort b) (==) + ] + +justBool :: Eq a => Maybe a -> Maybe a -> (a -> a -> Bool) -> Bool +justBool Nothing _ _ = True +justBool _ Nothing _ = True +justBool (Just a) (Just b) match = a `match` b + +sshComplList :: IO [String] +sshComplList = uniqSort `fmap` liftM2 (++) sshComplListLocal sshComplListGlobal + +sshComplListLocal :: IO [String] +sshComplListLocal = do + h <- getEnv "HOME" + s1 <- sshComplListFile $ h ++ "/.ssh/known_hosts" + s2 <- sshComplListConf $ h ++ "/.ssh/config" + return $ s1 ++ s2 + +sshComplListGlobal :: IO [String] +sshComplListGlobal = do + env <- getEnv "SSH_KNOWN_HOSTS" `E.catch` econst "/nonexistent" + fs <- mapM fileExists [ env + , "/usr/local/etc/ssh/ssh_known_hosts" + , "/usr/local/etc/ssh_known_hosts" + , "/etc/ssh/ssh_known_hosts" + , "/etc/ssh_known_hosts" + ] + case catMaybes fs of + [] -> return [] + (f:_) -> sshComplListFile' f + +sshComplListFile :: String -> IO [String] +sshComplListFile kh = do + f <- doesFileExist kh + if f then sshComplListFile' kh + else return [] + +sshComplListFile' :: String -> IO [String] +sshComplListFile' kh = do + l <- readFile kh + return $ map (getWithPort . takeWhile (/= ',') . concat . take 1 . words) + $ filter nonComment + $ lines l + +sshComplListConf :: String -> IO [String] +sshComplListConf kh = do + f <- doesFileExist kh + if f then sshComplListConf' kh + else return [] + +sshComplListConf' :: String -> IO [String] +sshComplListConf' kh = do + l <- readFile kh + return $ map (!!1) + $ filter isHost + $ map words + $ lines l + where + isHost ws = take 1 ws == ["Host"] && length ws > 1 + +fileExists :: String -> IO (Maybe String) +fileExists kh = do + f <- doesFileExist kh + if f then return $ Just kh + else return Nothing + +nonComment :: String -> Bool +nonComment [] = False +nonComment ('#':_) = False +nonComment ('|':_) = False -- hashed, undecodeable +nonComment _ = True + +getWithPort :: String -> String +getWithPort ('[':str) = host ++ " -p " ++ port + where (host,p) = break (==']') str + port = case p of + ']':':':x -> x + _ -> "22" +getWithPort str = str -- cgit v1.2.3