{-# LANGUAGE OverloadedStrings #-}
module Main where
import Control.Concurrent
import Control.Exception
import Control.Monad
import Data.ByteString (ByteString)
import qualified Data.ByteString.Char8 as BS
import Data.Conduit
import Data.Conduit.Binary as CB
import Data.Conduit.List as CL
import Data.Conduit.Network
import Data.IORef
import Network.Sendfile
import Network.Socket
import System.Directory
import System.Exit
import System.IO
import System.Posix.Files
import System.Process
import System.Timeout
import Test.Hspec
----------------------------------------------------------------
main :: IO ()
main = do
setup0
hspec spec
spec :: Spec
spec = do
describe "sendfile" $ do
it "sends an entire file" $ do
setup0
sendFile EntireFile `shouldReturn` ExitSuccess
it "sends a part of file" $ do
sendFile (PartOfFile 2000 1000000) `shouldReturn` ExitSuccess
it "terminates even if length is over" $ do
shouldTerminate $ sendIllegal (PartOfFile 2000 5000000)
it "terminates even if offset is over" $ do
shouldTerminate $ sendIllegal (PartOfFile 5000000 6000000)
it "terminates even if the file is truncated" $ do
shouldTerminate truncateFile
describe "sendfileWithHeader" $ do
it "sends an header and an entire file" $ do
sendFileH EntireFile `shouldReturn` ExitSuccess
it "sends an header and a part of file" $ do
sendFileH (PartOfFile 2000 1000000) `shouldReturn` ExitSuccess
it "sends a large header and an entire file" $ do
sendFileHLarge EntireFile `shouldReturn` ExitSuccess
it "sends a large header and a part of file" $ do
sendFileHLarge (PartOfFile 2000 1000000) `shouldReturn` ExitSuccess
it "terminates even if length is over" $ do
shouldTerminate $ sendIllegalH (PartOfFile 2000 5000000)
it "terminates even if offset is over" $ do
shouldTerminate $ sendIllegalH (PartOfFile 5000000 6000000)
it "terminates even if the file is truncated" $ do
shouldTerminate truncateFileH
where
fiveSecs = 5000000
shouldTerminate body = timeout fiveSecs body `shouldReturn` Just ()
----------------------------------------------------------------
sendFile :: FileRange -> IO ExitCode
sendFile range = sendFileCore range []
sendFileH :: FileRange -> IO ExitCode
sendFileH range = sendFileCore range headers
where
headers = [
BS.replicate 100 'a'
, "\n"
, BS.replicate 200 'b'
, "\n"
, BS.replicate 300 'c'
, "\n"
]
sendFileHLarge :: FileRange -> IO ExitCode
sendFileHLarge range = sendFileCore range headers
where
headers = [
BS.replicate 10000 'a'
, "\n"
, BS.replicate 20000 'b'
, "\n"
, BS.replicate 30000 'c'
, "\n"
]
sendFileCore :: FileRange -> [ByteString] -> IO ExitCode
sendFileCore range headers = bracket setup teardown $ \(s2,_) -> do
runResourceT $ sourceSocket s2 $$ sinkFile outputFile
runResourceT $ copyfile range
system $ "cmp -s " ++ outputFile ++ " " ++ expectedFile
where
copyfile EntireFile = do
-- of course, we can use <> here
sourceList headers $$ sinkFile expectedFile
sourceFile inputFile $$ sinkAppendFile expectedFile
copyfile (PartOfFile off len) = do
sourceList headers $$ sinkFile expectedFile
sourceFile inputFile $= CB.isolate (off' + len')
$$ (CB.take off' >> sinkAppendFile expectedFile)
where
off' = fromIntegral off
len' = fromIntegral len
setup = do
(s1,s2) <- socketPair AF_UNIX Stream 0
tid <- forkIO (sf s1 `finally` sendEOF s1)
return (s2,tid)
where
sf s1
| headers == [] = sendfile s1 inputFile range (return ())
| otherwise = sendfileWithHeader s1 inputFile range (return ()) headers
sendEOF = sClose
teardown (s2,tid) = do
sClose s2
killThread tid
removeFileIfExists outputFile
removeFileIfExists expectedFile
inputFile = "test/inputFile"
outputFile = "test/outputFile"
expectedFile = "test/expectedFile"
----------------------------------------------------------------
sendIllegal :: FileRange -> IO ()
sendIllegal range = sendIllegalCore range []
sendIllegalH :: FileRange -> IO ()
sendIllegalH range = sendIllegalCore range headers
where
headers = [
BS.replicate 100 'a'
, "\n"
, BS.replicate 200 'b'
, "\n"
, BS.replicate 300 'c'
, "\n"
]
sendIllegalCore :: FileRange -> [ByteString] -> IO ()
sendIllegalCore range headers = bracket setup teardown $ \(s2,_) -> do
runResourceT $ sourceSocket s2 $$ sinkFile outputFile
return ()
where
setup = do
(s1,s2) <- socketPair AF_UNIX Stream 0
tid <- forkIO (sf s1 `finally` sendEOF s1)
return (s2,tid)
where
sf s1
| headers == [] = sendfile s1 inputFile range (return ())
| otherwise = sendfileWithHeader s1 inputFile range (return ()) headers
sendEOF = sClose
teardown (s2,tid) = do
sClose s2
killThread tid
removeFileIfExists outputFile
inputFile = "test/inputFile"
outputFile = "test/outputFile"
----------------------------------------------------------------
truncateFile :: IO ()
truncateFile = truncateFileCore []
truncateFileH :: IO ()
truncateFileH = truncateFileCore headers
where
headers = [
BS.replicate 100 'a'
, "\n"
, BS.replicate 200 'b'
, "\n"
, BS.replicate 300 'c'
, "\n"
]
truncateFileCore :: [ByteString] -> IO ()
truncateFileCore headers = bracket setup teardown $ \(s2,_) -> do
runResourceT $ sourceSocket s2 $$ sinkFile outputFile
return ()
where
setup = do
runResourceT $ sourceFile inputFile $$ sinkFile tempFile
(s1,s2) <- socketPair AF_UNIX Stream 0
ref <- newIORef (1 :: Int)
tid <- forkIO (sf s1 ref `finally` sendEOF s1)
return (s2,tid)
where
sf s1 ref
| headers == [] = sendfile s1 tempFile range (hook ref)
| otherwise = sendfileWithHeader s1 tempFile range (hook ref) headers
sendEOF = sClose
hook ref = do
n <- readIORef ref
when (n == 10) $ setFileSize tempFile 900000
writeIORef ref (n+1)
teardown (s2,tid) = do
sClose s2
killThread tid
removeFileIfExists tempFile
removeFileIfExists outputFile
inputFile = "test/inputFile"
tempFile = "test/tempFile"
outputFile = "test/outputFile"
range = EntireFile
----------------------------------------------------------------
removeFileIfExists :: FilePath -> IO ()
removeFileIfExists file = do
exist <- doesFileExist file
when exist $ removeFile file
sinkAppendFile :: MonadResource m
=> FilePath
-> Sink ByteString m ()
sinkAppendFile fp = sinkIOHandle (openBinaryFile fp AppendMode)
----------------------------------------------------------------
srcFile :: String
srcFile = "/usr/share/dict/words"
dstFile :: String
dstFile = "test/inputFile"
setup0 :: IO ()
setup0 = do
dst <- doesFileExist dstFile
unless dst $ do
src <- doesFileExist srcFile
if src then do
size <- getFileSize srcFile
if size >= 1000000 then
copyFile srcFile dstFile
else
failure
else
failure
where
getFileSize file = bracket (openFile file ReadMode) hClose hFileSize
failure = do
hPutStrLn stderr "You must copy a large file (> 1000000 bytes) to \"test/inputFile\"."
exitFailure