module XMonad.Prompt.Ssh
(
sshPrompt,
Ssh,
) where
import XMonad
import XMonad.Prelude
import XMonad.Util.Run
import XMonad.Prompt
import System.Directory
import System.Environment
import Control.Exception as E
econst :: Monad m => a -> IOException -> m a
econst :: forall (m :: * -> *) a. Monad m => a -> IOException -> m a
econst = m a -> IOException -> m a
forall a b. a -> b -> a
const (m a -> IOException -> m a)
-> (a -> m a) -> a -> IOException -> m a
forall b c a. (b -> c) -> (a -> b) -> a -> c
. a -> m a
forall a. a -> m a
forall (m :: * -> *) a. Monad m => a -> m a
return
data Ssh = Ssh
instance XPrompt Ssh where
showXPrompt :: Ssh -> String
showXPrompt Ssh
Ssh = String
"SSH to: "
commandToComplete :: Ssh -> String -> String
commandToComplete Ssh
_ String
c = String
-> ((String, String) -> String) -> Maybe (String, String) -> String
forall b a. b -> (a -> b) -> Maybe a -> b
maybe String
c (String, String) -> String
forall a b. (a, b) -> b
snd (String -> Maybe (String, String)
parseHost String
c)
nextCompletion :: Ssh -> String -> [String] -> String
nextCompletion Ssh
_t String
c [String]
l = String
-> ((String, String) -> String) -> Maybe (String, String) -> String
forall b a. b -> (a -> b) -> Maybe a -> b
maybe String
next (\(String
u,String
_h) -> String
u String -> String -> String
forall a. [a] -> [a] -> [a]
++ String
"@" String -> String -> String
forall a. [a] -> [a] -> [a]
++ String
next) Maybe (String, String)
hostPared
where
hostPared :: Maybe (String, String)
hostPared = String -> Maybe (String, String)
parseHost String
c
next :: String
next = String -> [String] -> String
getNextCompletion (String
-> ((String, String) -> String) -> Maybe (String, String) -> String
forall b a. b -> (a -> b) -> Maybe a -> b
maybe String
c (String, String) -> String
forall a b. (a, b) -> b
snd Maybe (String, String)
hostPared) [String]
l
sshPrompt :: XPConfig -> X ()
sshPrompt :: XPConfig -> X ()
sshPrompt XPConfig
c = do
sc <- IO [String] -> X [String]
forall (m :: * -> *) a. MonadIO m => IO a -> m a
io IO [String]
sshComplList
mkXPrompt Ssh c (mkComplFunFromList c sc) ssh
ssh :: String -> X ()
ssh :: String -> X ()
ssh = String -> String -> X ()
runInTerm String
"" (String -> X ()) -> (String -> String) -> String -> X ()
forall b c a. (b -> c) -> (a -> b) -> a -> c
. (String
"ssh " String -> String -> String
forall a. [a] -> [a] -> [a]
++ )
sshComplList :: IO [String]
sshComplList :: IO [String]
sshComplList = [String] -> [String]
forall a. Ord a => [a] -> [a]
uniqSort ([String] -> [String]) -> IO [String] -> IO [String]
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> ([String] -> [String] -> [String])
-> IO [String] -> IO [String] -> IO [String]
forall a b c. (a -> b -> c) -> IO a -> IO b -> IO c
forall (f :: * -> *) a b c.
Applicative f =>
(a -> b -> c) -> f a -> f b -> f c
liftA2 [String] -> [String] -> [String]
forall a. [a] -> [a] -> [a]
(++) IO [String]
sshComplListLocal IO [String]
sshComplListGlobal
sshComplListLocal :: IO [String]
sshComplListLocal :: IO [String]
sshComplListLocal = do
h <- String -> IO String
getEnv String
"HOME"
s1 <- sshComplListFile $ h ++ "/.ssh/known_hosts"
s2 <- sshComplListConf $ h ++ "/.ssh/config"
return $ s1 ++ s2
sshComplListGlobal :: IO [String]
sshComplListGlobal :: IO [String]
sshComplListGlobal = do
env <- String -> IO String
getEnv String
"SSH_KNOWN_HOSTS" IO String -> (IOException -> IO String) -> IO String
forall e a. Exception e => IO a -> (e -> IO a) -> IO a
`E.catch` String -> IOException -> IO String
forall (m :: * -> *) a. Monad m => a -> IOException -> m a
econst String
"/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
[] -> [String] -> IO [String]
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return []
(String
f:[String]
_) -> ComplFunction
sshComplListFile' String
f
sshComplListFile :: String -> IO [String]
sshComplListFile :: ComplFunction
sshComplListFile String
kh = do
f <- String -> IO Bool
doesFileExist String
kh
if f then sshComplListFile' kh
else return []
sshComplListFile' :: String -> IO [String]
sshComplListFile' :: ComplFunction
sshComplListFile' String
kh = do
l <- String -> IO String
readFile String
kh
return $ map (getWithPort . takeWhile (/= ',') . concat . take 1 . words)
$ filter nonComment
$ lines l
sshComplListConf :: String -> IO [String]
sshComplListConf :: ComplFunction
sshComplListConf String
kh = do
f <- String -> IO Bool
doesFileExist String
kh
if f then sshComplListConf' kh
else return []
sshComplListConf' :: String -> IO [String]
sshComplListConf' :: ComplFunction
sshComplListConf' String
kh = do
l <- String -> IO String
readFile String
kh
return $ map (!!1)
$ filter isHost
$ map words
$ lines l
where
isHost :: [String] -> Bool
isHost [String]
ws = Int -> [String] -> [String]
forall a. Int -> [a] -> [a]
take Int
1 [String]
ws [String] -> [String] -> Bool
forall a. Eq a => a -> a -> Bool
== [String
"Host"] Bool -> Bool -> Bool
&& [String] -> Int
forall a. [a] -> Int
forall (t :: * -> *) a. Foldable t => t a -> Int
length [String]
ws Int -> Int -> Bool
forall a. Ord a => a -> a -> Bool
> Int
1
fileExists :: String -> IO (Maybe String)
fileExists :: String -> IO (Maybe String)
fileExists String
kh = do
f <- String -> IO Bool
doesFileExist String
kh
if f then return $ Just kh
else return Nothing
nonComment :: String -> Bool
[] = Bool
False
nonComment (Char
'#':String
_) = Bool
False
nonComment (Char
'|':String
_) = Bool
False
nonComment String
_ = Bool
True
getWithPort :: String -> String
getWithPort :: String -> String
getWithPort (Char
'[':String
str) = String
host String -> String -> String
forall a. [a] -> [a] -> [a]
++ String
" -p " String -> String -> String
forall a. [a] -> [a] -> [a]
++ String
port
where (String
host,String
p) = (Char -> Bool) -> String -> (String, String)
forall a. (a -> Bool) -> [a] -> ([a], [a])
break (Char -> Char -> Bool
forall a. Eq a => a -> a -> Bool
==Char
']') String
str
port :: String
port = case String
p of
Char
']':Char
':':String
x -> String
x
String
_ -> String
"22"
getWithPort String
str = String
str
parseHost :: String -> Maybe (String, String)
parseHost :: String -> Maybe (String, String)
parseHost String
a = Char -> String -> Maybe Int
forall a. Eq a => a -> [a] -> Maybe Int
elemIndex Char
'@' String
a Maybe Int
-> (Int -> Maybe (String, String)) -> Maybe (String, String)
forall a b. Maybe a -> (a -> Maybe b) -> Maybe b
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= (\Int
c-> (String, String) -> Maybe (String, String)
forall a. a -> Maybe a
Just ( Int -> String -> String
forall a. Int -> [a] -> [a]
take Int
c String
a, Int -> String -> String
forall a. Int -> [a] -> [a]
drop (Int
cInt -> Int -> Int
forall a. Num a => a -> a -> a
+Int
1) String
a ) )