author  nemo 
Fri, 12 Nov 2010 18:57:36 0500  
changeset 4295  1f5604cd99be 
parent 4242  5e3c5fe2cb14 
child 4568  f85243bf890e 
child 4579  4e61c2a42121 
permissions  rwrr 
4295
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

1 
{# LANGUAGE ScopedTypeVariables, OverloadedStrings #} 
1804  2 
module ClientIO where 
3 

2296
19f2f76dc346
Patch for compiling with 6.10 (define NEW_EXCEPTIONS to do that)
unc0rr
parents:
2126
diff
changeset

4 
import qualified Control.Exception as Exception 
1804  5 
import Control.Concurrent.Chan 
2867
9be6693c78cb
 Unbreak support for client versions prior to 0.9.13dev
unc0rr
parents:
2352
diff
changeset

6 
import Control.Concurrent 
1804  7 
import Control.Monad 
8 
import System.IO 

4295
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

9 
import Network 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

10 
import Network.Socket.ByteString 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

11 
import qualified Data.ByteString.Char8 as B 
1804  12 
 
13 
import CoreTypes 

4295
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

14 
import RoomsAndClients 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

15 
import Utils 
3458  16 

4295
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

17 

1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

18 
pDelim :: B.ByteString 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

19 
pDelim = B.pack "\n\n" 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

20 

1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

21 
bs2Packets :: B.ByteString > ([[B.ByteString]], B.ByteString) 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

22 
bs2Packets buf = unfoldrE extractPackets buf 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

23 
where 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

24 
extractPackets :: B.ByteString > Either B.ByteString ([B.ByteString], B.ByteString) 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

25 
extractPackets buf = 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

26 
let buf' = until (not . B.isPrefixOf pDelim) (B.drop 2) buf in 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

27 
let (bsPacket, bufTail) = B.breakSubstring pDelim buf' in 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

28 
if B.null bufTail then 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

29 
Left bsPacket 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

30 
else 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

31 
if B.null bsPacket then 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

32 
Left bufTail 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

33 
else 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

34 
Right (B.splitWith (== '\n') bsPacket, bufTail) 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

35 

3500
af8390d807d6
Use sockets instead of handles, use bytestrings instead of strings
unc0rr
parents:
3458
diff
changeset

36 

4295
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

37 
listenLoop :: Socket > Chan CoreMessage > ClientIndex > IO () 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

38 
listenLoop sock chan ci = recieveWithBufferLoop B.empty 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

39 
where 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

40 
recieveWithBufferLoop recvBuf = do 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

41 
recvBS < recv sock 4096 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

42 
 putStrLn $ show sock ++ " got smth: " ++ (show $ B.length recvBS) 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

43 
unless (B.null recvBS) $ do 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

44 
let (packets, newrecvBuf) = bs2Packets $ B.append recvBuf recvBS 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

45 
forM_ packets sendPacket 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

46 
recieveWithBufferLoop newrecvBuf 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

47 

1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

48 
sendPacket packet = writeChan chan $ ClientMessage (ci, packet) 
3500
af8390d807d6
Use sockets instead of handles, use bytestrings instead of strings
unc0rr
parents:
3458
diff
changeset

49 

4295
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

50 

1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

51 
clientRecvLoop :: Socket > Chan CoreMessage > ClientIndex > IO () 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

52 
clientRecvLoop s chan ci = do 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

53 
msg < (listenLoop s chan ci >> return "Connection closed") `catch` (return . B.pack . show) 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

54 
clientOff msg 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

55 
where 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

56 
clientOff msg = mapM_ (writeChan chan) [ClientMessage (ci, ["QUIT", msg]), Remove ci] 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

57 

1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

58 

1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

59 

1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

60 
clientSendLoop :: Socket > Chan [B.ByteString] > ClientIndex > IO () 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

61 
clientSendLoop s chan ci = do 
4242  62 
answer < readChan chan 
4295
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

63 
Exception.handle 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

64 
(\(e :: Exception.IOException) > when (not $ isQuit answer) $ sendQuit e) $ do 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

65 
sendAll s $ (B.unlines answer) `B.append` (B.singleton '\n') 
3500
af8390d807d6
Use sockets instead of handles, use bytestrings instead of strings
unc0rr
parents:
3458
diff
changeset

66 

4295
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

67 
if (isQuit answer) then 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

68 
Exception.handle (\(_ :: Exception.IOException) > putStrLn "error on sClose") $ sClose s 
2867
9be6693c78cb
 Unbreak support for client versions prior to 0.9.13dev
unc0rr
parents:
2352
diff
changeset

69 
else 
4295
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

70 
clientSendLoop s chan ci 
1804  71 

2867
9be6693c78cb
 Unbreak support for client versions prior to 0.9.13dev
unc0rr
parents:
2352
diff
changeset

72 
where 
4295
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

73 
sendQuit e = writeChan coreChan $ ClientMessage (ci, ["QUIT", B.pack $ show e]) 
1f5604cd99be
This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
parents:
4242
diff
changeset

74 
sendQuit e = putStrLn $ show e 
2867
9be6693c78cb
 Unbreak support for client versions prior to 0.9.13dev
unc0rr
parents:
2352
diff
changeset

75 
isQuit ("BYE":xs) = True 
9be6693c78cb
 Unbreak support for client versions prior to 0.9.13dev
unc0rr
parents:
2352
diff
changeset

76 
isQuit _ = False 