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|
{- OSX library copier
-
- Copyright 2012 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Main where
import Control.Applicative
import System.Environment (getArgs)
import Data.Maybe
import System.FilePath
import System.Directory
import Control.Monad
import Data.List
import Data.String.Utils
import Utility.PartialPrelude
import Utility.Directory
import Utility.Process
import Utility.Monad
import Utility.SafeCommand
import Utility.Path
import Utility.Exception
import Utility.Env
import qualified Data.Map as M
import qualified Data.Set as S
type LibMap = M.Map FilePath String
{- Recursively find and install libs, until nothing new to install is found. -}
mklibs :: FilePath -> [FilePath] -> [(FilePath, FilePath)] -> LibMap -> IO ()
mklibs appbase libdirs replacement_libs libmap = do
(new, replacement_libs', libmap') <- installLibs appbase replacement_libs libmap
unless (null new) $
mklibs appbase (libdirs++new) replacement_libs' libmap'
{- Returns directories into which new libs were installed. -}
installLibs :: FilePath -> [(FilePath, FilePath)] -> LibMap -> IO ([FilePath], [(FilePath, FilePath)], LibMap)
installLibs appbase replacement_libs libmap = do
(needlibs, replacement_libs', libmap') <- otool appbase replacement_libs libmap
libs <- forM needlibs $ \lib -> do
pathlib <- findLibPath lib
let shortlib = fromMaybe (error "internal") (M.lookup lib libmap')
let fulllib = dropWhile (== '/') lib
let dest = appbase </> fulllib
let symdest = appbase </> shortlib
ifM (doesFileExist dest)
( return Nothing
, do
createDirectoryIfMissing True (parentDir dest)
putStrLn $ "installing " ++ pathlib ++ " as " ++ shortlib
_ <- boolSystem "cp" [File pathlib, File dest]
_ <- boolSystem "chmod" [Param "644", File dest]
_ <- boolSystem "ln" [Param "-s", File fulllib, File symdest]
return $ Just appbase
)
return (catMaybes libs, replacement_libs', libmap')
{- Returns libraries to install.
-
- Note that otool -L ignores DYLD_LIBRARY_PATH, so the
- library files returned may need to be run through findLibPath
- to find the actual libraries to install.
-}
otool :: FilePath -> [(FilePath, FilePath)] -> LibMap -> IO ([FilePath], [(FilePath, FilePath)], LibMap)
otool appbase replacement_libs libmap = do
files <- filterM doesFileExist =<< dirContentsRecursive appbase
process [] files replacement_libs libmap
where
want s = not ("@executable_path" `isInfixOf` s)
&& not (".framework" `isInfixOf` s)
&& not ("libSystem.B" `isInfixOf` s)
process c [] rls m = return (nub $ concat c, rls, m)
process c (file:rest) rls m = do
_ <- boolSystem "chmod" [Param "755", File file]
libs <- filter want . parseOtool
<$> readProcess "otool" ["-L", file]
expanded_libs <- expand_rpath libs replacement_libs file
let rls' = nub $ rls ++ (zip libs expanded_libs)
m' <- install_name_tool file libs expanded_libs m
process (expanded_libs:c) rest rls' m'
findLibPath :: FilePath -> IO FilePath
findLibPath l = go =<< getEnv "DYLD_LIBRARY_PATH"
where
go Nothing = return l
go (Just p) = fromMaybe l
<$> firstM doesFileExist (map (</> f) (split ":" p))
f = takeFileName l
{- Expands any @rpath in the list of libraries.
-
- This is done by the nasty method of running the command with a dummy
- option (so it doesn't do anything.. hopefully!) and asking the dynamic
- linker to print expanded rpaths.
-}
expand_rpath :: [String] -> [(FilePath, FilePath)] -> FilePath -> IO [String]
expand_rpath libs replacement_libs cmd
| any ("@rpath" `isInfixOf`) libs = do
installed <- M.fromList . Prelude.read
<$> readFile "tmp/standalone-installed"
let origcmd = case M.lookup cmd installed of
Nothing -> cmd
Just cmd' -> cmd'
s <- catchDefaultIO "" $ readProcess "sh" ["-c", probe origcmd]
let m = if (null s)
then M.fromList replacement_libs
else M.fromList $ mapMaybe parse $ lines s
return $ map (replacem m) libs
| otherwise = return libs
where
probe c = "DYLD_PRINT_RPATHS=1 " ++ c ++ " --getting-rpath-dummy-option 2>&1 | grep RPATH"
parse s = case words s of
("RPATH":"successful":"expansion":"of":old:"to:":new:[]) ->
Just (old, new)
_ -> Nothing
replacem m l = fromMaybe l $ M.lookup l m
parseOtool :: String -> [FilePath]
parseOtool = catMaybes . map parse . lines
where
parse l
| "\t" `isPrefixOf` l = headMaybe $ words l
| otherwise = Nothing
{- Adjusts binaries to use libraries bundled with it, rather than the
- system libraries. -}
install_name_tool :: FilePath -> [FilePath] -> [FilePath] -> LibMap -> IO LibMap
install_name_tool _ [] _ libmap = return libmap
install_name_tool binary libs expanded_libs libmap = do
let (libnames, libmap') = getLibNames expanded_libs libmap
let params = concatMap change $ zip libs libnames
ok <- boolSystem "install_name_tool" $ params ++ [File binary]
unless ok $
error $ "install_name_tool failed for " ++ binary
return libmap'
where
change (lib, libname) =
[ Param "-change"
, File lib
, Param $ "@executable_path/" ++ libname
]
getLibNames :: [FilePath] -> LibMap -> ([FilePath], LibMap)
getLibNames libs libmap = go [] libs libmap
where
go c [] m = (reverse c, m)
go c (l:rest) m =
let (f, m') = getLibName l m
in go (f:c) rest m'
{- Uses really short names for the library files it installs, because
- binaries have arbitrarily short RPATH field limits. -}
getLibName :: FilePath -> LibMap -> (FilePath, LibMap)
getLibName lib libmap = case M.lookup lib libmap of
Just n -> (n, libmap)
Nothing -> (nextfreename, M.insert lib nextfreename libmap)
where
names = map pure ['A' .. 'Z'] ++
[[n, l] | n <- ['0' .. '9'], l <- ['A' .. 'Z']]
used = S.fromList $ M.elems libmap
nextfreename = fromMaybe (error "ran out of short library names!") $
headMaybe $ dropWhile (`S.member` used) names
main :: IO ()
main = getArgs >>= go
where
go [] = error "specify OSXAPP_BASE"
go (appbase:_) = mklibs appbase [] [] M.empty
|
