3bab5dfb1d
Reverts 965e106f24
Unfortunately, this caused breakage on Windows, and possibly elsewhere,
because parentDir and takeDirectory do not behave the same when there is a
trailing directory separator.
333 lines
11 KiB
Haskell
333 lines
11 KiB
Haskell
{- git-annex command
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-
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- Copyright 2011-2014 Joey Hess <joey@kitenet.net>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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{-# LANGUAGE CPP #-}
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module Command.AddUrl where
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import Network.URI
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import Common.Annex
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import Command
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import Backend
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import qualified Command.Add
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import qualified Annex
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import qualified Annex.Queue
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import qualified Annex.Url as Url
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import qualified Backend.URL
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import qualified Remote
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import qualified Types.Remote as Remote
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import Annex.Content
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import Annex.UUID
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import Logs.Web
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import Types.Key
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import Types.KeySource
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import Types.UrlContents
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import Config
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import Annex.Content.Direct
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import Logs.Location
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import Utility.Metered
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import qualified Annex.Transfer as Transfer
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#ifdef WITH_QUVI
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import Annex.Quvi
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import qualified Utility.Quvi as Quvi
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#endif
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cmd :: [Command]
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cmd = [notBareRepo $ withOptions [fileOption, pathdepthOption, relaxedOption] $
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command "addurl" (paramRepeating paramUrl) seek
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SectionCommon "add urls to annex"]
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fileOption :: Option
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fileOption = fieldOption [] "file" paramFile "specify what file the url is added to"
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pathdepthOption :: Option
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pathdepthOption = fieldOption [] "pathdepth" paramNumber "path components to use in filename"
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relaxedOption :: Option
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relaxedOption = flagOption [] "relaxed" "skip size check"
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seek :: CommandSeek
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seek us = do
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optfile <- getOptionField fileOption return
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relaxed <- getOptionFlag relaxedOption
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pathdepth <- getOptionField pathdepthOption (return . maybe Nothing readish)
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forM_ us $ \u -> do
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r <- Remote.claimingUrl u
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if Remote.uuid r == webUUID
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then void $ commandAction $ startWeb relaxed optfile pathdepth u
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else do
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pathmax <- liftIO $ fileNameLengthLimit "."
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let deffile = fromMaybe (urlString2file u pathdepth pathmax) optfile
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res <- tryNonAsync $ maybe
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(error $ "unable to checkUrl of " ++ Remote.name r)
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(flip id u)
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(Remote.checkUrl r)
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case res of
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Left e -> void $ commandAction $ do
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showStart "addurl" u
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warning (show e)
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next $ next $ return False
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Right (UrlContents sz mf) -> do
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void $ commandAction $
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startRemote r relaxed (maybe deffile fromSafeFilePath mf) u sz
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Right (UrlMulti l) ->
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forM_ l $ \(u', sz, f) ->
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void $ commandAction $
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startRemote r relaxed (deffile </> fromSafeFilePath f) u' sz
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startRemote :: Remote -> Bool -> FilePath -> URLString -> Maybe Integer -> CommandStart
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startRemote r relaxed file uri sz = do
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pathmax <- liftIO $ fileNameLengthLimit "."
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let file' = joinPath $ map (truncateFilePath pathmax) $ splitDirectories file
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showStart "addurl" file'
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showNote $ "from " ++ Remote.name r
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next $ performRemote r relaxed uri file' sz
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performRemote :: Remote -> Bool -> URLString -> FilePath -> Maybe Integer -> CommandPerform
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performRemote r relaxed uri file sz = ifAnnexed file adduri geturi
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where
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loguri = setDownloader uri OtherDownloader
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adduri = addUrlChecked relaxed loguri (Remote.uuid r) checkexistssize
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checkexistssize key = return $ case sz of
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Nothing -> (True, True)
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Just n -> (True, n == fromMaybe n (keySize key))
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geturi = next $ isJust <$> downloadRemoteFile r relaxed uri file sz
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downloadRemoteFile :: Remote -> Bool -> URLString -> FilePath -> Maybe Integer -> Annex (Maybe Key)
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downloadRemoteFile r relaxed uri file sz = do
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urlkey <- Backend.URL.fromUrl uri sz
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liftIO $ createDirectoryIfMissing True (parentDir file)
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ifM (Annex.getState Annex.fast <||> pure relaxed)
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( do
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cleanup (Remote.uuid r) loguri file urlkey Nothing
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return (Just urlkey)
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, do
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-- Set temporary url for the urlkey
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-- so that the remote knows what url it
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-- should use to download it.
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setTempUrl urlkey loguri
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let downloader = Remote.retrieveKeyFile r urlkey (Just file)
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ret <- downloadWith downloader urlkey (Remote.uuid r) loguri file
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removeTempUrl urlkey
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return ret
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)
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where
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loguri = setDownloader uri OtherDownloader
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startWeb :: Bool -> Maybe FilePath -> Maybe Int -> String -> CommandStart
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startWeb relaxed optfile pathdepth s = go $ fromMaybe bad $ parseURI s
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where
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(s', downloader) = getDownloader s
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bad = fromMaybe (error $ "bad url " ++ s') $
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parseURI $ escapeURIString isUnescapedInURI s'
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choosefile = flip fromMaybe optfile
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go url = case downloader of
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QuviDownloader -> usequvi
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_ ->
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#ifdef WITH_QUVI
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ifM (quviSupported s')
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( usequvi
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, regulardownload url
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)
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#else
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regulardownload url
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#endif
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regulardownload url = do
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pathmax <- liftIO $ fileNameLengthLimit "."
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let file = choosefile $ url2file url pathdepth pathmax
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showStart "addurl" file
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next $ performWeb relaxed s' file
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#ifdef WITH_QUVI
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badquvi = error $ "quvi does not know how to download url " ++ s'
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usequvi = do
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page <- fromMaybe badquvi
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<$> withQuviOptions Quvi.forceQuery [Quvi.quiet, Quvi.httponly] s'
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let link = fromMaybe badquvi $ headMaybe $ Quvi.pageLinks page
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pathmax <- liftIO $ fileNameLengthLimit "."
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let file = choosefile $ truncateFilePath pathmax $ sanitizeFilePath $
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Quvi.pageTitle page ++ "." ++ Quvi.linkSuffix link
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showStart "addurl" file
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next $ performQuvi relaxed s' (Quvi.linkUrl link) file
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#else
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usequvi = error "not built with quvi support"
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#endif
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performWeb :: Bool -> URLString -> FilePath -> CommandPerform
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performWeb relaxed url file = ifAnnexed file addurl geturl
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where
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geturl = next $ isJust <$> addUrlFile relaxed url file
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addurl = addUrlChecked relaxed url webUUID checkexistssize
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checkexistssize = Url.withUrlOptions . Url.check url . keySize
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#ifdef WITH_QUVI
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performQuvi :: Bool -> URLString -> URLString -> FilePath -> CommandPerform
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performQuvi relaxed pageurl videourl file = ifAnnexed file addurl geturl
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where
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quviurl = setDownloader pageurl QuviDownloader
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addurl key = next $ do
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cleanup webUUID quviurl file key Nothing
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return True
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geturl = next $ isJust <$> addUrlFileQuvi relaxed quviurl videourl file
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#endif
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#ifdef WITH_QUVI
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addUrlFileQuvi :: Bool -> URLString -> URLString -> FilePath -> Annex (Maybe Key)
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addUrlFileQuvi relaxed quviurl videourl file = do
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key <- Backend.URL.fromUrl quviurl Nothing
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ifM (pure relaxed <||> Annex.getState Annex.fast)
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( do
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cleanup webUUID quviurl file key Nothing
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return (Just key)
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, do
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{- Get the size, and use that to check
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- disk space. However, the size info is not
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- retained, because the size of a video stream
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- might change and we want to be able to download
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- it later. -}
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sizedkey <- addSizeUrlKey videourl key
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prepGetViaTmpChecked sizedkey Nothing $ do
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tmp <- fromRepo $ gitAnnexTmpObjectLocation key
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showOutput
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ok <- Transfer.notifyTransfer Transfer.Download (Just file) $
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Transfer.download webUUID key (Just file) Transfer.forwardRetry $ const $ do
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liftIO $ createDirectoryIfMissing True (parentDir tmp)
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downloadUrl [videourl] tmp
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if ok
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then do
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cleanup webUUID quviurl file key (Just tmp)
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return (Just key)
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else return Nothing
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)
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#endif
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addUrlChecked :: Bool -> URLString -> UUID -> (Key -> Annex (Bool, Bool)) -> Key -> CommandPerform
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addUrlChecked relaxed url u checkexistssize key
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| relaxed = do
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setUrlPresent u key url
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next $ return True
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| otherwise = ifM ((elem url <$> getUrls key) <&&> (elem u <$> loggedLocations key))
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( next $ return True -- nothing to do
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, do
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(exists, samesize) <- checkexistssize key
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if exists && samesize
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then do
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setUrlPresent u key url
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next $ return True
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else do
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warning $ "while adding a new url to an already annexed file, " ++ if exists
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then "url does not have expected file size (use --relaxed to bypass this check) " ++ url
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else "failed to verify url exists: " ++ url
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stop
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)
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addUrlFile :: Bool -> URLString -> FilePath -> Annex (Maybe Key)
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addUrlFile relaxed url file = do
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liftIO $ createDirectoryIfMissing True (parentDir file)
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ifM (Annex.getState Annex.fast <||> pure relaxed)
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( nodownload relaxed url file
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, downloadWeb url file
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)
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downloadWeb :: URLString -> FilePath -> Annex (Maybe Key)
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downloadWeb url file = do
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dummykey <- addSizeUrlKey url =<< Backend.URL.fromUrl url Nothing
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let downloader f _ = do
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showOutput
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downloadUrl [url] f
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showAction $ "downloading " ++ url ++ " "
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downloadWith downloader dummykey webUUID url file
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{- The Key should be a dummy key, based on the URL, which is used
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- for this download, before we can examine the file and find its real key.
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- For resuming downloads to work, the dummy key for a given url should be
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- stable. -}
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downloadWith :: (FilePath -> MeterUpdate -> Annex Bool) -> Key -> UUID -> URLString -> FilePath -> Annex (Maybe Key)
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downloadWith downloader dummykey u url file =
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prepGetViaTmpChecked dummykey Nothing $ do
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tmp <- fromRepo $ gitAnnexTmpObjectLocation dummykey
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ifM (runtransfer tmp)
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( do
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backend <- chooseBackend file
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let source = KeySource
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{ keyFilename = file
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, contentLocation = tmp
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, inodeCache = Nothing
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}
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k <- genKey source backend
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case k of
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Nothing -> return Nothing
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Just (key, _) -> do
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cleanup u url file key (Just tmp)
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return (Just key)
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, return Nothing
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)
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where
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runtransfer tmp = Transfer.notifyTransfer Transfer.Download (Just file) $
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Transfer.download u dummykey (Just file) Transfer.forwardRetry $ \p -> do
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liftIO $ createDirectoryIfMissing True (parentDir tmp)
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downloader tmp p
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{- Hits the url to get the size, if available.
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-
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- This is needed to avoid exceeding the diskreserve when downloading,
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- and so the assistant can display a pretty progress bar.
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-}
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addSizeUrlKey :: URLString -> Key -> Annex Key
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addSizeUrlKey url key = do
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size <- snd <$> Url.withUrlOptions (Url.exists url)
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return $ key { keySize = size }
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cleanup :: UUID -> URLString -> FilePath -> Key -> Maybe FilePath -> Annex ()
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cleanup u url file key mtmp = do
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when (isJust mtmp) $
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logStatus key InfoPresent
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setUrlPresent u key url
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Command.Add.addLink file key Nothing
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whenM isDirect $ do
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void $ addAssociatedFile key file
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{- For moveAnnex to work in direct mode, the symlink
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- must already exist, so flush the queue. -}
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Annex.Queue.flush
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maybe noop (moveAnnex key) mtmp
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nodownload :: Bool -> URLString -> FilePath -> Annex (Maybe Key)
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nodownload relaxed url file = do
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(exists, size) <- if relaxed
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then pure (True, Nothing)
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else Url.withUrlOptions (Url.exists url)
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if exists
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then do
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key <- Backend.URL.fromUrl url size
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cleanup webUUID url file key Nothing
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return (Just key)
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else do
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warning $ "unable to access url: " ++ url
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return Nothing
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url2file :: URI -> Maybe Int -> Int -> FilePath
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url2file url pathdepth pathmax = case pathdepth of
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Nothing -> truncateFilePath pathmax $ sanitizeFilePath fullurl
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Just depth
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| depth >= length urlbits -> frombits id
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| depth > 0 -> frombits $ drop depth
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| depth < 0 -> frombits $ reverse . take (negate depth) . reverse
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| otherwise -> error "bad --pathdepth"
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where
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fullurl = concat
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[ maybe "" uriRegName (uriAuthority url)
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, uriPath url
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, uriQuery url
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]
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frombits a = intercalate "/" $ a urlbits
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urlbits = map (truncateFilePath pathmax . sanitizeFilePath) $
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filter (not . null) $ split "/" fullurl
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urlString2file :: URLString -> Maybe Int -> Int -> FilePath
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urlString2file s pathdepth pathmax = case Url.parseURIRelaxed s of
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Nothing -> error $ "bad uri " ++ s
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Just u -> url2file u pathdepth pathmax
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