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|
{- Web remote.
-
- Copyright 2011 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
{-# LANGUAGE CPP #-}
module Remote.Web (remote) where
import Common.Annex
import Types.Remote
import qualified Git
import qualified Git.Construct
import Annex.Content
import Config.Cost
import Logs.Web
import Annex.UUID
import Types.Key
import Utility.Metered
import qualified Annex.Url as Url
#ifdef WITH_QUVI
import Annex.Quvi
import qualified Utility.Quvi as Quvi
#endif
remote :: RemoteType
remote = RemoteType {
typename = "web",
enumerate = list,
generate = gen,
setup = error "not supported"
}
-- There is only one web remote, and it always exists.
-- (If the web should cease to exist, remove this module and redistribute
-- a new release to the survivors by carrier pigeon.)
list :: Annex [Git.Repo]
list = do
r <- liftIO $ Git.Construct.remoteNamed "web" (pure Git.Construct.fromUnknown)
return [r]
gen :: Git.Repo -> UUID -> RemoteConfig -> RemoteGitConfig -> Annex (Maybe Remote)
gen r _ c gc =
return $ Just Remote
{ uuid = webUUID
, cost = expensiveRemoteCost
, name = Git.repoDescribe r
, storeKey = uploadKey
, retrieveKeyFile = downloadKey
, retrieveKeyFileCheap = downloadKeyCheap
, removeKey = dropKey
, checkPresent = checkKey
, checkPresentCheap = False
, whereisKey = Just getWebUrls
, remoteFsck = Nothing
, repairRepo = Nothing
, config = c
, gitconfig = gc
, localpath = Nothing
, repo = r
, readonly = True
, availability = GloballyAvailable
, remotetype = remote
, mkUnavailable = return Nothing
, getInfo = return []
, claimUrl = Nothing -- implicitly claims all urls
, checkUrl = Nothing
}
downloadKey :: Key -> AssociatedFile -> FilePath -> MeterUpdate -> Annex Bool
downloadKey key _file dest _p = get =<< getWebUrls key
where
get [] = do
warning "no known url"
return False
get urls = do
showOutput -- make way for download progress bar
untilTrue urls $ \u -> do
let (u', downloader) = getDownloader u
case downloader of
QuviDownloader -> do
#ifdef WITH_QUVI
flip downloadUrl dest
=<< withQuviOptions Quvi.queryLinks [Quvi.httponly, Quvi.quiet] u'
#else
warning "quvi support needed for this url"
return False
#endif
_ -> downloadUrl [u'] dest
downloadKeyCheap :: Key -> FilePath -> Annex Bool
downloadKeyCheap _ _ = return False
uploadKey :: Key -> AssociatedFile -> MeterUpdate -> Annex Bool
uploadKey _ _ _ = do
warning "upload to web not supported"
return False
dropKey :: Key -> Annex Bool
dropKey k = do
mapM_ (setUrlMissing webUUID k) =<< getWebUrls k
return True
checkKey :: Key -> Annex Bool
checkKey key = do
us <- getWebUrls key
if null us
then return False
else either error return =<< checkKey' key us
checkKey' :: Key -> [URLString] -> Annex (Either String Bool)
checkKey' key us = firsthit us (Right False) $ \u -> do
let (u', downloader) = getDownloader u
showAction $ "checking " ++ u'
case downloader of
QuviDownloader ->
#ifdef WITH_QUVI
Right <$> withQuviOptions Quvi.check [Quvi.httponly, Quvi.quiet] u'
#else
return $ Left "quvi support needed for this url"
#endif
_ -> do
Url.withUrlOptions $ catchMsgIO .
Url.checkBoth u' (keySize key)
where
firsthit [] miss _ = return miss
firsthit (u:rest) _ a = do
r <- a u
case r of
Right _ -> return r
Left _ -> firsthit rest r a
getWebUrls :: Key -> Annex [URLString]
getWebUrls key = filter supported <$> getUrls key
where
supported u = snd (getDownloader u)
`elem` [WebDownloader, QuviDownloader]
|
