b50ee9cd0c
That had almost no benefit at all, and complicated things quite a lot. What I proably wanted this to be was something like ResourceT, but it was not. The few remotes that actually need some preparation done only once and reused used a MVar and not Preparer.
546 lines
17 KiB
Haskell
546 lines
17 KiB
Haskell
{- WebDAV remotes.
|
|
-
|
|
- Copyright 2012-2020 Joey Hess <id@joeyh.name>
|
|
-
|
|
- Licensed under the GNU AGPL version 3 or higher.
|
|
-}
|
|
|
|
{-# LANGUAGE ScopedTypeVariables #-}
|
|
|
|
module Remote.WebDAV (remote, davCreds, configUrl) where
|
|
|
|
import Network.Protocol.HTTP.DAV
|
|
import qualified Data.Map as M
|
|
import qualified Data.ByteString.Lazy as L
|
|
import qualified Data.ByteString.UTF8 as B8
|
|
import qualified Data.ByteString.Lazy.UTF8 as L8
|
|
import Network.HTTP.Client (HttpException(..), RequestBody)
|
|
import qualified Network.HTTP.Client as HTTP
|
|
import Network.HTTP.Client (HttpExceptionContent(..), responseStatus)
|
|
import Network.HTTP.Types
|
|
import System.IO.Error
|
|
import Control.Monad.Catch
|
|
import Control.Monad.IO.Class (MonadIO)
|
|
import System.Log.Logger (debugM)
|
|
import Control.Concurrent.STM hiding (check)
|
|
|
|
import Annex.Common
|
|
import Types.Remote
|
|
import Types.Export
|
|
import qualified Git
|
|
import Config
|
|
import Config.Cost
|
|
import Annex.SpecialRemote.Config
|
|
import Remote.Helper.Special
|
|
import Remote.Helper.Messages
|
|
import Remote.Helper.Http
|
|
import Remote.Helper.ExportImport
|
|
import qualified Remote.Helper.Chunked.Legacy as Legacy
|
|
import Creds
|
|
import Utility.Metered
|
|
import Utility.Url (URLString, matchStatusCodeException, matchHttpExceptionContent)
|
|
import Annex.UUID
|
|
import Remote.WebDAV.DavLocation
|
|
import Types.ProposedAccepted
|
|
|
|
remote :: RemoteType
|
|
remote = specialRemoteType $ RemoteType
|
|
{ typename = "webdav"
|
|
, enumerate = const (findSpecialRemotes "webdav")
|
|
, generate = gen
|
|
, configParser = mkRemoteConfigParser
|
|
[ optionalStringParser urlField
|
|
(FieldDesc "(required) url to the WebDAV directory")
|
|
, optionalStringParser davcredsField HiddenField
|
|
]
|
|
, setup = webdavSetup
|
|
, exportSupported = exportIsSupported
|
|
, importSupported = importUnsupported
|
|
}
|
|
|
|
urlField :: RemoteConfigField
|
|
urlField = Accepted "url"
|
|
|
|
davcredsField :: RemoteConfigField
|
|
davcredsField = Accepted "davcreds"
|
|
|
|
gen :: Git.Repo -> UUID -> RemoteConfig -> RemoteGitConfig -> RemoteStateHandle -> Annex (Maybe Remote)
|
|
gen r u rc gc rs = do
|
|
c <- parsedRemoteConfig remote rc
|
|
new
|
|
<$> pure c
|
|
<*> remoteCost gc expensiveRemoteCost
|
|
<*> mkDavHandleVar c gc u
|
|
where
|
|
new c cst hdl = Just $ specialRemote c
|
|
(store hdl chunkconfig)
|
|
(retrieve hdl chunkconfig)
|
|
(remove hdl)
|
|
(checkKey hdl this chunkconfig)
|
|
this
|
|
where
|
|
this = Remote
|
|
{ uuid = u
|
|
, cost = cst
|
|
, name = Git.repoDescribe r
|
|
, storeKey = storeKeyDummy
|
|
, retrieveKeyFile = retreiveKeyFileDummy
|
|
, retrieveKeyFileCheap = retrieveCheap
|
|
-- HttpManagerRestricted is used here, so this is
|
|
-- secure.
|
|
, retrievalSecurityPolicy = RetrievalAllKeysSecure
|
|
, removeKey = removeKeyDummy
|
|
, lockContent = Nothing
|
|
, checkPresent = checkPresentDummy
|
|
, checkPresentCheap = False
|
|
, exportActions = ExportActions
|
|
{ storeExport = storeExportDav hdl
|
|
, retrieveExport = retrieveExportDav hdl
|
|
, checkPresentExport = checkPresentExportDav hdl this
|
|
, removeExport = removeExportDav hdl
|
|
, removeExportDirectory = Just $
|
|
removeExportDirectoryDav hdl
|
|
, renameExport = renameExportDav hdl
|
|
}
|
|
, importActions = importUnsupported
|
|
, whereisKey = Nothing
|
|
, remoteFsck = Nothing
|
|
, repairRepo = Nothing
|
|
, config = c
|
|
, getRepo = return r
|
|
, gitconfig = gc
|
|
, localpath = Nothing
|
|
, readonly = False
|
|
, appendonly = False
|
|
, availability = GloballyAvailable
|
|
, remotetype = remote
|
|
, mkUnavailable = gen r u (M.insert urlField (Proposed "http://!dne!/") rc) gc rs
|
|
, getInfo = includeCredsInfo c (davCreds u) $
|
|
[("url", fromMaybe "unknown" $ getRemoteConfigValue urlField c)]
|
|
, claimUrl = Nothing
|
|
, checkUrl = Nothing
|
|
, remoteStateHandle = rs
|
|
}
|
|
chunkconfig = getChunkConfig c
|
|
|
|
webdavSetup :: SetupStage -> Maybe UUID -> Maybe CredPair -> RemoteConfig -> RemoteGitConfig -> Annex (RemoteConfig, UUID)
|
|
webdavSetup _ mu mcreds c gc = do
|
|
u <- maybe (liftIO genUUID) return mu
|
|
url <- maybe (giveup "Specify url=")
|
|
(return . fromProposedAccepted)
|
|
(M.lookup urlField c)
|
|
(c', encsetup) <- encryptionSetup c gc
|
|
pc <- either giveup return . parseRemoteConfig c' =<< configParser remote c'
|
|
creds <- maybe (getCreds pc gc u) (return . Just) mcreds
|
|
testDav url creds
|
|
gitConfigSpecialRemote u c' [("webdav", "true")]
|
|
c'' <- setRemoteCredPair encsetup c' gc (davCreds u) creds
|
|
return (c'', u)
|
|
|
|
store :: DavHandleVar -> ChunkConfig -> Storer
|
|
store hv (LegacyChunks chunksize) = fileStorer $ \k f p ->
|
|
withDavHandle hv $ \case
|
|
Nothing -> return False
|
|
Just dav -> liftIO $
|
|
withMeteredFile f p $ storeLegacyChunked chunksize k dav
|
|
store hv _ = httpStorer $ \k reqbody ->
|
|
withDavHandle hv $ \case
|
|
Nothing -> return False
|
|
Just dav -> liftIO $ goDAV dav $ do
|
|
let tmp = keyTmpLocation k
|
|
let dest = keyLocation k
|
|
storeHelper dav tmp dest reqbody
|
|
return True
|
|
|
|
storeHelper :: DavHandle -> DavLocation -> DavLocation -> RequestBody -> DAVT IO ()
|
|
storeHelper dav tmp dest reqbody = do
|
|
maybe noop (void . mkColRecursive) (locationParent tmp)
|
|
debugDav $ "putContent " ++ tmp
|
|
inLocation tmp $
|
|
putContentM' (contentType, reqbody)
|
|
finalizeStore dav tmp dest
|
|
|
|
finalizeStore :: DavHandle -> DavLocation -> DavLocation -> DAVT IO ()
|
|
finalizeStore dav tmp dest = do
|
|
debugDav $ "delContent " ++ dest
|
|
inLocation dest $ void $ safely $ delContentM
|
|
maybe noop (void . mkColRecursive) (locationParent dest)
|
|
moveDAV (baseURL dav) tmp dest
|
|
|
|
retrieveCheap :: Key -> AssociatedFile -> FilePath -> Annex Bool
|
|
retrieveCheap _ _ _ = return False
|
|
|
|
retrieve :: DavHandleVar -> ChunkConfig -> Retriever
|
|
retrieve hv cc = fileRetriever $ \d k p ->
|
|
withDavHandle hv $ \case
|
|
Nothing -> giveup "unable to connect"
|
|
Just dav -> case cc of
|
|
LegacyChunks _ -> retrieveLegacyChunked d k p dav
|
|
_ -> liftIO $
|
|
goDAV dav $ retrieveHelper (keyLocation k) d p
|
|
|
|
retrieveHelper :: DavLocation -> FilePath -> MeterUpdate -> DAVT IO ()
|
|
retrieveHelper loc d p = do
|
|
debugDav $ "retrieve " ++ loc
|
|
inLocation loc $
|
|
withContentM $ httpBodyRetriever d p
|
|
|
|
remove :: DavHandleVar -> Remover
|
|
remove hv k = withDavHandle hv $ \case
|
|
Nothing -> return False
|
|
Just dav -> liftIO $ goDAV dav $
|
|
-- Delete the key's whole directory, including any
|
|
-- legacy chunked files, etc, in a single action.
|
|
removeHelper (keyDir k)
|
|
|
|
removeHelper :: DavLocation -> DAVT IO Bool
|
|
removeHelper d = do
|
|
debugDav $ "delContent " ++ d
|
|
v <- safely $ inLocation d delContentM
|
|
case v of
|
|
Just _ -> return True
|
|
Nothing -> do
|
|
v' <- existsDAV d
|
|
case v' of
|
|
Right False -> return True
|
|
_ -> return False
|
|
|
|
checkKey :: DavHandleVar -> Remote -> ChunkConfig -> CheckPresent
|
|
checkKey hv r chunkconfig k = withDavHandle hv $ \case
|
|
Nothing -> giveup $ name r ++ " not configured"
|
|
Just dav -> do
|
|
showChecking r
|
|
case chunkconfig of
|
|
LegacyChunks _ -> checkKeyLegacyChunked dav k
|
|
_ -> do
|
|
v <- liftIO $ goDAV dav $
|
|
existsDAV (keyLocation k)
|
|
either giveup return v
|
|
|
|
storeExportDav :: DavHandleVar -> FilePath -> Key -> ExportLocation -> MeterUpdate -> Annex Bool
|
|
storeExportDav hdl f k loc p = case exportLocation loc of
|
|
Right dest -> withDavHandle hdl $ \mh -> runExport mh $ \dav -> do
|
|
reqbody <- liftIO $ httpBodyStorer f p
|
|
storeHelper dav (keyTmpLocation k) dest reqbody
|
|
return True
|
|
Left err -> do
|
|
warning err
|
|
return False
|
|
|
|
retrieveExportDav :: DavHandleVar -> Key -> ExportLocation -> FilePath -> MeterUpdate -> Annex Bool
|
|
retrieveExportDav hdl _k loc d p = case exportLocation loc of
|
|
Right src -> withDavHandle hdl $ \mh -> runExport mh $ \_dav -> do
|
|
retrieveHelper src d p
|
|
return True
|
|
Left _err -> return False
|
|
|
|
checkPresentExportDav :: DavHandleVar -> Remote -> Key -> ExportLocation -> Annex Bool
|
|
checkPresentExportDav hdl r _k loc = case exportLocation loc of
|
|
Right p -> withDavHandle hdl $ \case
|
|
Nothing -> giveup $ name r ++ " not configured"
|
|
Just h -> liftIO $ do
|
|
v <- goDAV h $ existsDAV p
|
|
either giveup return v
|
|
Left err -> giveup err
|
|
|
|
removeExportDav :: DavHandleVar-> Key -> ExportLocation -> Annex Bool
|
|
removeExportDav hdl _k loc = case exportLocation loc of
|
|
Right p -> withDavHandle hdl $ \mh -> runExport mh $ \_dav ->
|
|
removeHelper p
|
|
-- When the exportLocation is not legal for webdav,
|
|
-- the content is certianly not stored there, so it's ok for
|
|
-- removal to succeed. This allows recovery after failure to store
|
|
-- content there, as the user can rename the problem file and
|
|
-- this will be called to make sure it's gone.
|
|
Left _err -> return True
|
|
|
|
removeExportDirectoryDav :: DavHandleVar -> ExportDirectory -> Annex Bool
|
|
removeExportDirectoryDav hdl dir = withDavHandle hdl $ \mh -> runExport mh $ \_dav -> do
|
|
let d = fromRawFilePath $ fromExportDirectory dir
|
|
debugDav $ "delContent " ++ d
|
|
safely (inLocation d delContentM)
|
|
>>= maybe (return False) (const $ return True)
|
|
|
|
renameExportDav :: DavHandleVar -> Key -> ExportLocation -> ExportLocation -> Annex (Maybe Bool)
|
|
renameExportDav hdl _k src dest = case (exportLocation src, exportLocation dest) of
|
|
(Right srcl, Right destl) -> withDavHandle hdl $ \case
|
|
Just h
|
|
-- box.com's DAV endpoint has buggy handling of renames,
|
|
-- so avoid renaming when using it.
|
|
| boxComUrl `isPrefixOf` baseURL h -> return Nothing
|
|
| otherwise -> do
|
|
v <- runExport (Just h) $ \dav -> do
|
|
maybe noop (void . mkColRecursive) (locationParent destl)
|
|
moveDAV (baseURL dav) srcl destl
|
|
return True
|
|
return (Just v)
|
|
Nothing -> return (Just False)
|
|
_ -> return (Just False)
|
|
|
|
runExport :: Maybe DavHandle -> (DavHandle -> DAVT IO Bool) -> Annex Bool
|
|
runExport Nothing _ = return False
|
|
runExport (Just h) a = fromMaybe False <$> liftIO (goDAV h $ safely (a h))
|
|
|
|
configUrl :: ParsedRemoteConfig -> Maybe URLString
|
|
configUrl c = fixup <$> getRemoteConfigValue urlField c
|
|
where
|
|
-- box.com DAV url changed
|
|
fixup = replace "https://www.box.com/dav/" boxComUrl
|
|
|
|
boxComUrl :: URLString
|
|
boxComUrl = "https://dav.box.com/dav/"
|
|
|
|
type DavUser = B8.ByteString
|
|
type DavPass = B8.ByteString
|
|
|
|
baseURL :: DavHandle -> URLString
|
|
baseURL (DavHandle _ _ _ u) = u
|
|
|
|
|
|
toDavUser :: String -> DavUser
|
|
toDavUser = B8.fromString
|
|
|
|
toDavPass :: String -> DavPass
|
|
toDavPass = B8.fromString
|
|
|
|
{- Test if a WebDAV store is usable, by writing to a test file, and then
|
|
- deleting the file.
|
|
-
|
|
- Also ensures that the path of the url exists, trying to create it if not.
|
|
-
|
|
- Throws an error if store is not usable.
|
|
-}
|
|
testDav :: URLString -> Maybe CredPair -> Annex ()
|
|
testDav url (Just (u, p)) = do
|
|
showAction "testing WebDAV server"
|
|
test $ liftIO $ evalDAVT url $ do
|
|
prepDAV user pass
|
|
makeParentDirs
|
|
inLocation (tmpLocation "test") $ do
|
|
putContentM (Nothing, L8.fromString "test")
|
|
delContentM
|
|
where
|
|
test a = liftIO $
|
|
either (\e -> throwIO $ "WebDAV test failed: " ++ show e)
|
|
(const noop)
|
|
=<< tryNonAsync a
|
|
|
|
user = toDavUser u
|
|
pass = toDavPass p
|
|
testDav _ Nothing = error "Need to configure webdav username and password."
|
|
|
|
{- Tries to make all the parent directories in the WebDAV urls's path,
|
|
- right down to the root.
|
|
-
|
|
- Ignores any failures, which can occur for reasons including the WebDAV
|
|
- server only serving up WebDAV in a subdirectory. -}
|
|
makeParentDirs :: DAVT IO ()
|
|
makeParentDirs = go
|
|
where
|
|
go = do
|
|
l <- getDAVLocation
|
|
case locationParent l of
|
|
Nothing -> noop
|
|
Just p -> void $ safely $ inDAVLocation (const p) go
|
|
void $ safely mkCol
|
|
|
|
{- Checks if the directory exists. If not, tries to create its
|
|
- parent directories, all the way down to the root, and finally creates
|
|
- it. -}
|
|
mkColRecursive :: DavLocation -> DAVT IO Bool
|
|
mkColRecursive d = go =<< existsDAV d
|
|
where
|
|
go (Right True) = return True
|
|
go _ = do
|
|
debugDav $ "mkCol " ++ d
|
|
ifM (inLocation d mkCol)
|
|
( return True
|
|
, do
|
|
case locationParent d of
|
|
Nothing -> makeParentDirs
|
|
Just parent -> void (mkColRecursive parent)
|
|
inLocation d mkCol
|
|
)
|
|
|
|
getCreds :: ParsedRemoteConfig -> RemoteGitConfig -> UUID -> Annex (Maybe CredPair)
|
|
getCreds c gc u = getRemoteCredPairFor "webdav" c gc (davCreds u)
|
|
|
|
davCreds :: UUID -> CredPairStorage
|
|
davCreds u = CredPairStorage
|
|
{ credPairFile = fromUUID u
|
|
, credPairEnvironment = ("WEBDAV_USERNAME", "WEBDAV_PASSWORD")
|
|
, credPairRemoteField = davcredsField
|
|
}
|
|
|
|
{- Content-Type to use for files uploaded to WebDAV. -}
|
|
contentType :: Maybe B8.ByteString
|
|
contentType = Just $ B8.fromString "application/octet-stream"
|
|
|
|
throwIO :: String -> IO a
|
|
throwIO msg = ioError $ mkIOError userErrorType msg Nothing Nothing
|
|
|
|
moveDAV :: URLString -> DavLocation -> DavLocation -> DAVT IO ()
|
|
moveDAV baseurl src dest = do
|
|
debugDav $ "moveContent " ++ src ++ " " ++ newurl
|
|
inLocation src $ moveContentM (B8.fromString newurl)
|
|
where
|
|
newurl = locationUrl baseurl dest
|
|
|
|
existsDAV :: DavLocation -> DAVT IO (Either String Bool)
|
|
existsDAV l = do
|
|
debugDav $ "getProps " ++ l
|
|
inLocation l check `catchNonAsync` (\e -> return (Left $ show e))
|
|
where
|
|
check = do
|
|
-- Some DAV services only support depth of 1, and
|
|
-- more depth is certainly not needed to check if a
|
|
-- location exists.
|
|
setDepth (Just Depth1)
|
|
catchJust missinghttpstatus
|
|
(getPropsM >> ispresent True)
|
|
(const $ ispresent False)
|
|
ispresent = return . Right
|
|
missinghttpstatus e =
|
|
matchStatusCodeException (== notFound404) e
|
|
<|> matchHttpExceptionContent toomanyredirects e
|
|
toomanyredirects (TooManyRedirects _) = True
|
|
toomanyredirects _ = False
|
|
|
|
safely :: DAVT IO a -> DAVT IO (Maybe a)
|
|
safely = eitherToMaybe <$$> tryNonAsync
|
|
|
|
choke :: IO (Either String a) -> IO a
|
|
choke f = do
|
|
x <- f
|
|
case x of
|
|
Left e -> error e
|
|
Right r -> return r
|
|
|
|
data DavHandle = DavHandle DAVContext DavUser DavPass URLString
|
|
|
|
type DavHandleVar = TVar (Either (Annex (Maybe DavHandle)) (Maybe DavHandle))
|
|
|
|
{- Prepares a DavHandle for later use. Does not connect to the server or do
|
|
- anything else expensive. -}
|
|
mkDavHandleVar :: ParsedRemoteConfig -> RemoteGitConfig -> UUID -> Annex DavHandleVar
|
|
mkDavHandleVar c gc u = liftIO $ newTVarIO $ Left $ do
|
|
mcreds <- getCreds c gc u
|
|
case (mcreds, configUrl c) of
|
|
(Just (user, pass), Just baseurl) -> do
|
|
ctx <- mkDAVContext baseurl
|
|
let h = DavHandle ctx (toDavUser user) (toDavPass pass) baseurl
|
|
return (Just h)
|
|
_ -> return Nothing
|
|
|
|
withDavHandle :: DavHandleVar -> (Maybe DavHandle -> Annex a) -> Annex a
|
|
withDavHandle hv a = liftIO (readTVarIO hv) >>= \case
|
|
Right hdl -> a hdl
|
|
Left mkhdl -> do
|
|
hdl <- mkhdl
|
|
liftIO $ atomically $ writeTVar hv (Right hdl)
|
|
a hdl
|
|
|
|
goDAV :: DavHandle -> DAVT IO a -> IO a
|
|
goDAV (DavHandle ctx user pass _) a = choke $ run $ prettifyExceptions $ do
|
|
prepDAV user pass
|
|
a
|
|
where
|
|
run = fst <$$> runDAVContext ctx
|
|
|
|
{- Catch StatusCodeException and trim it to only the statusMessage part,
|
|
- eliminating a lot of noise, which can include the whole request that
|
|
- failed. The rethrown exception is no longer a StatusCodeException. -}
|
|
prettifyExceptions :: DAVT IO a -> DAVT IO a
|
|
prettifyExceptions a = catchJust (matchStatusCodeException (const True)) a go
|
|
where
|
|
go (HttpExceptionRequest req (StatusCodeException response message)) = giveup $ unwords
|
|
[ "DAV failure:"
|
|
, show (responseStatus response)
|
|
, show (message)
|
|
, "HTTP request:"
|
|
, show (HTTP.method req)
|
|
, show (HTTP.path req)
|
|
]
|
|
go e = throwM e
|
|
|
|
prepDAV :: DavUser -> DavPass -> DAVT IO ()
|
|
prepDAV user pass = do
|
|
setResponseTimeout Nothing -- disable default (5 second!) timeout
|
|
setCreds user pass
|
|
|
|
--
|
|
-- Legacy chunking code, to be removed eventually.
|
|
--
|
|
|
|
storeLegacyChunked :: ChunkSize -> Key -> DavHandle -> L.ByteString -> IO Bool
|
|
storeLegacyChunked chunksize k dav b =
|
|
Legacy.storeChunks k tmp dest storer recorder finalizer
|
|
where
|
|
storehttp l b' = void $ goDAV dav $ do
|
|
maybe noop (void . mkColRecursive) (locationParent l)
|
|
debugDav $ "putContent " ++ l
|
|
inLocation l $ putContentM (contentType, b')
|
|
storer locs = Legacy.storeChunked chunksize locs storehttp b
|
|
recorder l s = storehttp l (L8.fromString s)
|
|
finalizer tmp' dest' = goDAV dav $
|
|
finalizeStore dav tmp' (fromJust $ locationParent dest')
|
|
|
|
tmp = addTrailingPathSeparator $ keyTmpLocation k
|
|
dest = keyLocation k
|
|
|
|
retrieveLegacyChunked :: FilePath -> Key -> MeterUpdate -> DavHandle -> Annex ()
|
|
retrieveLegacyChunked d k p dav = liftIO $
|
|
withStoredFilesLegacyChunked k dav onerr $ \locs ->
|
|
Legacy.meteredWriteFileChunks p d locs $ \l ->
|
|
goDAV dav $ do
|
|
debugDav $ "getContent " ++ l
|
|
inLocation l $
|
|
snd <$> getContentM
|
|
where
|
|
onerr = error "download failed"
|
|
|
|
checkKeyLegacyChunked :: DavHandle -> CheckPresent
|
|
checkKeyLegacyChunked dav k = liftIO $
|
|
either error id <$> withStoredFilesLegacyChunked k dav onerr check
|
|
where
|
|
check [] = return $ Right True
|
|
check (l:ls) = do
|
|
v <- goDAV dav $ existsDAV l
|
|
if v == Right True
|
|
then check ls
|
|
else return v
|
|
|
|
{- Failed to read the chunkcount file; see if it's missing,
|
|
- or if there's a problem accessing it,
|
|
- or perhaps this was an intermittent error. -}
|
|
onerr f = do
|
|
v <- goDAV dav $ existsDAV f
|
|
return $ if v == Right True
|
|
then Left $ "failed to read " ++ f
|
|
else v
|
|
|
|
withStoredFilesLegacyChunked
|
|
:: Key
|
|
-> DavHandle
|
|
-> (DavLocation -> IO a)
|
|
-> ([DavLocation] -> IO a)
|
|
-> IO a
|
|
withStoredFilesLegacyChunked k dav onerr a = do
|
|
let chunkcount = keyloc ++ Legacy.chunkCount
|
|
v <- goDAV dav $ safely $ do
|
|
debugDav $ "getContent " ++ chunkcount
|
|
inLocation chunkcount $
|
|
snd <$> getContentM
|
|
case v of
|
|
Just s -> a $ Legacy.listChunks keyloc $ L8.toString s
|
|
Nothing -> do
|
|
chunks <- Legacy.probeChunks keyloc $ \f ->
|
|
(== Right True) <$> goDAV dav (existsDAV f)
|
|
if null chunks
|
|
then onerr chunkcount
|
|
else a chunks
|
|
where
|
|
keyloc = keyLocation k
|
|
|
|
debugDav :: MonadIO m => String -> DAVT m ()
|
|
debugDav msg = liftIO $ debugM "WebDAV" msg
|