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|
{-# LANGUAGE ForeignFunctionInterface #-}
--------------------------------------------------------------------
-- |
-- Module : Network.Curl.Info
-- Copyright : (c) 2007-2009, Galois Inc
-- License : BSD3
--
-- Maintainer: Sigbjorn Finne <sof@galois.com>
-- Stability : provisional
-- Portability: portable
--
-- Accessing the properties of a curl handle's current state\/request.
--
--------------------------------------------------------------------
module Network.Curl.Info
( Info(..)
, InfoValue(..)
, getInfo -- :: Curl -> Info -> IO InfoValue
) where
import Network.Curl.Types
import Network.Curl.Code
import Control.Monad
import Foreign.Ptr
import Foreign.Marshal.Alloc
import Foreign.Storable
import Foreign.C
data Info
= EffectiveUrl
| ResponseCode
| TotalTime
| NameLookupTime
| ConnectTime
| PreTransferTime
| SizeUpload
| SizeDownload
| SpeedDownload
| SpeedUpload
| HeaderSize
| RequestSize
| SslVerifyResult
| Filetime
| ContentLengthDownload
| ContentLengthUpload
| StartTransferTime
| ContentType
| RedirectTime
| RedirectCount
| Private
| HttpConnectCode
| HttpAuthAvail
| ProxyAuthAvail
| OSErrno
| NumConnects
| SslEngines
| CookieList
| LastSocket
| FtpEntryPath
deriving (Show,Enum,Bounded)
data InfoValue
= IString String
| ILong Long
| IDouble Double
| IList [String]
instance Show InfoValue where
show k =
case k of
IString s -> s
ILong l -> show l
IDouble d -> show d
IList ss -> show ss
{-
stringTag :: Long
stringTag = 0x100000 -- CURLINFO_STRING
longTag :: Long
longTag = 0x200000 -- CURLINFO_LONG
doubleTag :: Long
doubleTag = 0x300000 -- CURLINFO_DOUBLE
slistTag :: Long
slistTag = 0x400000 -- CURLINFO_SLIST
-}
{- unused, unexported
infoMask :: Long
infoMask = 0x0fffff -- CURLINFO_MASK
infoTypeMask :: Long
infoTypeMask = 0xf00000 -- CURLINFO_TYPEMASK
-}
getInfo :: Curl -> Info -> IO InfoValue
getInfo h i = do
case i of
EffectiveUrl -> getInfoStr h (show i) 1
ResponseCode -> getInfoLong h (show i) 2
TotalTime -> getInfoDouble h (show i) 3
NameLookupTime -> getInfoDouble h (show i) 4
ConnectTime -> getInfoDouble h (show i) 5
PreTransferTime -> getInfoDouble h (show i) 6
SizeUpload -> getInfoDouble h (show i) 7
SizeDownload -> getInfoDouble h (show i) 8
SpeedDownload -> getInfoDouble h (show i) 9
SpeedUpload -> getInfoDouble h (show i) 10
HeaderSize -> getInfoLong h (show i) 11
RequestSize -> getInfoLong h (show i) 12
SslVerifyResult -> getInfoLong h (show i) 13
Filetime -> getInfoLong h (show i) 14
ContentLengthDownload -> getInfoDouble h (show i) 15
ContentLengthUpload -> getInfoDouble h (show i) 16
StartTransferTime -> getInfoDouble h (show i) 17
ContentType -> getInfoStr h (show i) 18
RedirectTime -> getInfoDouble h (show i) 19
RedirectCount -> getInfoLong h (show i) 20
Private -> getInfoStr h (show i) 21
HttpConnectCode -> getInfoLong h (show i) 22
HttpAuthAvail -> getInfoLong h (show i) 23
ProxyAuthAvail -> getInfoLong h (show i) 24
OSErrno -> getInfoLong h (show i) 25
NumConnects -> getInfoLong h (show i) 26
SslEngines -> getInfoSList h (show i) 27
CookieList -> getInfoSList h (show i) 28
LastSocket -> getInfoLong h (show i) 29
FtpEntryPath -> getInfoStr h (show i) 30
getInfoStr :: Curl -> String -> Long -> IO InfoValue
getInfoStr h loc tg =
alloca $ \ ps -> do
rc <- curlPrim h $ \_ p -> easy_getinfo_str p tg ps
case rc of
0 -> do
s <- peek ps
if s == nullPtr
then return (IString "")
else liftM IString $ peekCString s
_ -> fail ("getInfo{"++loc ++ "}: " ++ show (toCode rc))
getInfoLong :: Curl -> String -> Long -> IO InfoValue
getInfoLong h loc tg =
alloca $ \ pl -> do
rc <- curlPrim h $ \_ p -> easy_getinfo_long p tg pl
case rc of
0 -> do
l <- peek pl
return (ILong l)
_ -> fail ("getInfo{"++loc ++ "}: " ++ show (toCode rc))
getInfoDouble :: Curl -> String -> Long -> IO InfoValue
getInfoDouble h loc tg =
alloca $ \ pd -> do
rc <- curlPrim h $ \_ p -> easy_getinfo_double p tg pd
case rc of
0 -> do
d <- peek pd
return (IDouble d)
_ -> fail ("getInfo{"++loc ++ "}: " ++ show (toCode rc))
getInfoSList :: Curl -> String -> Long -> IO InfoValue
getInfoSList h loc tg =
alloca $ \ ps -> do
rc <- curlPrim h $ \_ p -> easy_getinfo_slist p tg ps
case rc of
0 -> do
p <- peek ps
ls <- unmarshallList p
return (IList ls)
_ -> fail ("getInfo{"++loc ++ "}: " ++ show (toCode rc))
where
unmarshallList ptr
| ptr == nullPtr = return []
| otherwise = do
ps <- peekByteOff ptr 0
s <- if ps == nullPtr then return "" else peekCString ps
nx <- peekByteOff ptr (sizeOf nullPtr)
ls <- unmarshallList nx
return (s:ls)
-- FFI decls
foreign import ccall
"curl_easy_getinfo_long" easy_getinfo_long :: CurlH -> Long -> Ptr Long -> IO CInt
foreign import ccall
"curl_easy_getinfo_string" easy_getinfo_str :: CurlH -> Long -> Ptr CString -> IO CInt
foreign import ccall
"curl_easy_getinfo_double" easy_getinfo_double :: CurlH -> Long -> Ptr Double -> IO CInt
foreign import ccall
"curl_easy_getinfo_slist" easy_getinfo_slist :: CurlH -> Long -> Ptr (Ptr (Ptr CChar)) -> IO CInt
|
