25703e1413
Fourth or fifth try at this and finally found a way to make it work. Absurd amount of busy-work forced on me by change in cabal's behavior. Split up Utility modules that need posix stuff out of ones used by Setup. Various other hacks around inability for Setup to use anything that ifdefs a use of unix. Probably lost a full day of my life to this. This is how build systems make their users hate them. Just saying.
463 lines
16 KiB
Haskell
463 lines
16 KiB
Haskell
{- git-annex command
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-
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- Copyright 2011-2017 Joey Hess <id@joeyh.name>
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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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module Command.AddUrl where
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import Network.URI
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import Command
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import Backend
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import qualified Annex
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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 qualified Command.Add
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import Annex.Content
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import Annex.Ingest
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import Annex.CheckIgnore
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import Annex.UUID
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import Annex.YoutubeDl
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import Logs.Web
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import Types.KeySource
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import Types.UrlContents
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import Annex.FileMatcher
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import Logs.Location
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import Utility.Metered
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import Utility.FileSystemEncoding
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import Utility.HtmlDetect
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import Utility.Path.Max
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import qualified Annex.Transfer as Transfer
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cmd :: Command
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cmd = notBareRepo $ withGlobalOptions [jobsOption, jsonOption, jsonProgressOption] $
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command "addurl" SectionCommon "add urls to annex"
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(paramRepeating paramUrl) (seek <$$> optParser)
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data AddUrlOptions = AddUrlOptions
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{ addUrls :: CmdParams
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, pathdepthOption :: Maybe Int
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, prefixOption :: Maybe String
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, suffixOption :: Maybe String
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, downloadOptions :: DownloadOptions
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, batchOption :: BatchMode
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, batchFilesOption :: Bool
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}
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data DownloadOptions = DownloadOptions
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{ relaxedOption :: Bool
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, rawOption :: Bool
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, fileOption :: Maybe FilePath
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}
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optParser :: CmdParamsDesc -> Parser AddUrlOptions
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optParser desc = AddUrlOptions
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<$> cmdParams desc
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<*> optional (option auto
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( long "pathdepth" <> metavar paramNumber
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<> help "number of url path components to use in filename"
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))
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<*> optional (strOption
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( long "prefix" <> metavar paramValue
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<> help "add a prefix to the filename"
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))
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<*> optional (strOption
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( long "suffix" <> metavar paramValue
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<> help "add a suffix to the filename"
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))
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<*> parseDownloadOptions True
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<*> parseBatchOption
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<*> switch
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( long "with-files"
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<> help "parse batch mode lines of the form \"$url $file\""
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)
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parseDownloadOptions :: Bool -> Parser DownloadOptions
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parseDownloadOptions withfileoption = DownloadOptions
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<$> switch
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( long "relaxed"
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<> help "skip size check"
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)
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<*> switch
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( long "raw"
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<> help "disable special handling for torrents, youtube-dl, etc"
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)
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<*> if withfileoption
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then optional (strOption
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( long "file" <> metavar paramFile
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<> help "specify what file the url is added to"
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))
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else pure Nothing
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seek :: AddUrlOptions -> CommandSeek
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seek o = allowConcurrentOutput $ do
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forM_ (addUrls o) (\u -> go (o, u))
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case batchOption o of
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Batch -> batchInput (parseBatchInput o) go
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NoBatch -> noop
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where
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go (o', u) = do
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r <- Remote.claimingUrl u
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if Remote.uuid r == webUUID || rawOption (downloadOptions o')
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then void $ commandAction $ startWeb o' u
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else checkUrl r o' u
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parseBatchInput :: AddUrlOptions -> String -> Either String (AddUrlOptions, URLString)
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parseBatchInput o s
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| batchFilesOption o =
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let (u, f) = separate (== ' ') s
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in if null u || null f
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then Left ("parsed empty url or filename in input: " ++ s)
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else Right (o { downloadOptions = (downloadOptions o) { fileOption = Just f } }, u)
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| otherwise = Right (o, s)
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checkUrl :: Remote -> AddUrlOptions -> URLString -> Annex ()
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checkUrl r o u = do
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pathmax <- liftIO $ fileNameLengthLimit "."
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let deffile = fromMaybe (urlString2file u (pathdepthOption o) pathmax) (fileOption (downloadOptions o))
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go deffile =<< maybe
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(error $ "unable to checkUrl of " ++ Remote.name r)
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(tryNonAsync . flip id u)
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(Remote.checkUrl r)
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where
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go _ (Left e) = void $ commandAction $ do
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showStart' "addurl" (Just u)
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warning (show e)
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next $ next $ return False
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go deffile (Right (UrlContents sz mf)) = do
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let f = adjustFile o (fromMaybe (maybe deffile fromSafeFilePath mf) (fileOption (downloadOptions o)))
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void $ commandAction $ startRemote r o f u sz
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go deffile (Right (UrlMulti l))
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| isNothing (fileOption (downloadOptions o)) =
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forM_ l $ \(u', sz, f) -> do
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let f' = adjustFile o (deffile </> fromSafeFilePath f)
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void $ commandAction $
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startRemote r o f' u' sz
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| otherwise = giveup $ unwords
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[ "That url contains multiple files according to the"
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, Remote.name r
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, " remote; cannot add it to a single file."
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]
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startRemote :: Remote -> AddUrlOptions -> FilePath -> URLString -> Maybe Integer -> CommandStart
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startRemote r o 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" (Just uri)
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showNote $ "from " ++ Remote.name r
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showDestinationFile file'
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next $ performRemote r o uri file' sz
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performRemote :: Remote -> AddUrlOptions -> URLString -> FilePath -> Maybe Integer -> CommandPerform
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performRemote r o 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 o loguri file (Remote.uuid r) checkexistssize
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checkexistssize key = return $ case sz of
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Nothing -> (True, True, loguri)
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Just n -> (True, n == fromMaybe n (keySize key), loguri)
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geturi = next $ isJust <$> downloadRemoteFile r (downloadOptions o) uri file sz
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downloadRemoteFile :: Remote -> DownloadOptions -> URLString -> FilePath -> Maybe Integer -> Annex (Maybe Key)
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downloadRemoteFile r o uri file sz = checkCanAdd file $ do
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let 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 (relaxedOption o))
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( do
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addWorkTree (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 = \dest p -> fst
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<$> Remote.retrieveKeyFile r urlkey
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(AssociatedFile (Just file)) dest p
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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 :: AddUrlOptions -> URLString -> CommandStart
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startWeb o urlstring = go $ fromMaybe bad $ parseURI urlstring
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where
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bad = fromMaybe (giveup $ "bad url " ++ urlstring) $
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Url.parseURIRelaxed $ urlstring
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go url = do
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showStart' "addurl" (Just urlstring)
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pathmax <- liftIO $ fileNameLengthLimit "."
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urlinfo <- if relaxedOption (downloadOptions o)
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then pure Url.assumeUrlExists
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else Url.withUrlOptions (Url.getUrlInfo urlstring)
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file <- adjustFile o <$> case fileOption (downloadOptions o) of
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Just f -> pure f
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Nothing -> case Url.urlSuggestedFile urlinfo of
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Nothing -> pure $ url2file url (pathdepthOption o) pathmax
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Just sf -> do
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let f = truncateFilePath pathmax $
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sanitizeFilePath sf
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ifM (liftIO $ doesFileExist f <||> doesDirectoryExist f)
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( pure $ url2file url (pathdepthOption o) pathmax
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, pure f
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)
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next $ performWeb o urlstring file urlinfo
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performWeb :: AddUrlOptions -> URLString -> FilePath -> Url.UrlInfo -> CommandPerform
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performWeb o url file urlinfo = ifAnnexed file addurl geturl
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where
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geturl = next $ isJust <$> addUrlFile (downloadOptions o) url urlinfo file
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addurl = addUrlChecked o url file webUUID $ \k ->
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ifM (pure (not (rawOption (downloadOptions o))) <&&> youtubeDlSupported url)
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( return (True, True, setDownloader url YoutubeDownloader)
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, return (Url.urlExists urlinfo, Url.urlSize urlinfo == keySize k, url)
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)
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{- Check that the url exists, and has the same size as the key,
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- and add it as an url to the key. -}
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addUrlChecked :: AddUrlOptions -> URLString -> FilePath -> UUID -> (Key -> Annex (Bool, Bool, URLString)) -> Key -> CommandPerform
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addUrlChecked o url file u checkexistssize key =
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ifM ((elem url <$> getUrls key) <&&> (elem u <$> loggedLocations key))
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( do
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showDestinationFile file
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next $ return True
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, do
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(exists, samesize, url') <- checkexistssize key
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if exists && (samesize || relaxedOption (downloadOptions o))
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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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{- Downloads an url (except in fast or relaxed mode) and adds it to the
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- repository, normally at the specified FilePath.
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- But, if youtube-dl supports the url, it will be written to a
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- different file, based on the title of the media. Unless the user
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- specified fileOption, which then forces using the FilePath.
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-}
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addUrlFile :: DownloadOptions -> URLString -> Url.UrlInfo -> FilePath -> Annex (Maybe Key)
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addUrlFile o url urlinfo file =
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ifM (Annex.getState Annex.fast <||> pure (relaxedOption o))
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( nodownloadWeb o url urlinfo file
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, downloadWeb o url urlinfo file
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)
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downloadWeb :: DownloadOptions -> URLString -> Url.UrlInfo -> FilePath -> Annex (Maybe Key)
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downloadWeb o url urlinfo file =
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go =<< downloadWith' downloader urlkey webUUID url (AssociatedFile (Just file))
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where
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urlkey = addSizeUrlKey urlinfo $ Backend.URL.fromUrl url Nothing
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downloader f p = do
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showOutput
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downloadUrl urlkey p [url] f
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go Nothing = return Nothing
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-- If we downloaded a html file, try to use youtube-dl to
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-- extract embedded media.
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go (Just tmp) = ifM (pure (not (rawOption o)) <&&> liftIO (isHtml <$> readFile tmp))
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( tryyoutubedl tmp
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, normalfinish tmp
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)
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normalfinish tmp = checkCanAdd file $ do
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showDestinationFile file
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liftIO $ createDirectoryIfMissing True (parentDir file)
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finishDownloadWith tmp webUUID url file
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tryyoutubedl tmp
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-- Ask youtube-dl what filename it will download
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-- first, and check if that is already an annexed file,
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-- to avoid unnecessary work in that case.
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| otherwise = youtubeDlFileName' url >>= \case
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Right dest -> ifAnnexed dest
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(alreadyannexed dest)
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(dl dest)
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Left _ -> normalfinish tmp
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where
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dl dest = withTmpWorkDir mediakey $ \workdir ->
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Transfer.notifyTransfer Transfer.Download url $
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Transfer.download webUUID mediakey (AssociatedFile Nothing) Transfer.noRetry $ \_p ->
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youtubeDl url workdir >>= \case
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Right (Just mediafile) -> do
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pruneTmpWorkDirBefore tmp (liftIO . nukeFile)
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checkCanAdd dest $ do
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showDestinationFile dest
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addWorkTree webUUID mediaurl dest mediakey (Just mediafile)
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return $ Just mediakey
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Right Nothing -> normalfinish tmp
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Left msg -> do
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warning msg
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return Nothing
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mediaurl = setDownloader url YoutubeDownloader
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mediakey = Backend.URL.fromUrl mediaurl Nothing
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-- Does the already annexed file have the mediaurl
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-- as an url? If so nothing to do.
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alreadyannexed dest k = do
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us <- getUrls k
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if mediaurl `elem` us
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then return (Just k)
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else do
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warning $ dest ++ " already exists; not overwriting"
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return Nothing
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showDestinationFile :: FilePath -> Annex ()
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showDestinationFile file = do
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showNote ("to " ++ file)
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maybeShowJSON $ JSONChunk [("file", 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. For disk space checking to work, the dummy key should have
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- the size of the url already set.
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-
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- Downloads the url, sets up the worktree file, and returns the
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- real key.
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-}
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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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go =<< downloadWith' downloader dummykey u url afile
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where
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afile = AssociatedFile (Just file)
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go Nothing = return Nothing
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go (Just tmp) = finishDownloadWith tmp u url file
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{- Like downloadWith, but leaves the dummy key content in
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- the returned location. -}
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downloadWith' :: (FilePath -> MeterUpdate -> Annex Bool) -> Key -> UUID -> URLString -> AssociatedFile -> Annex (Maybe FilePath)
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downloadWith' downloader dummykey u url afile =
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checkDiskSpaceToGet dummykey Nothing $ do
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tmp <- fromRepo $ gitAnnexTmpObjectLocation dummykey
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ok <- Transfer.notifyTransfer Transfer.Download url $
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Transfer.download u dummykey afile Transfer.forwardRetry $ \p -> do
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liftIO $ createDirectoryIfMissing True (parentDir tmp)
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downloader tmp p
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if ok
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then return (Just tmp)
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else return Nothing
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finishDownloadWith :: FilePath -> UUID -> URLString -> FilePath -> Annex (Maybe Key)
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finishDownloadWith tmp u url file = 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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genKey source backend >>= \case
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Nothing -> return Nothing
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Just (key, _) -> do
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addWorkTree u url file key (Just tmp)
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return (Just key)
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{- Adds the url size to the Key. -}
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addSizeUrlKey :: Url.UrlInfo -> Key -> Key
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addSizeUrlKey urlinfo key = key { keySize = Url.urlSize urlinfo }
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{- Adds worktree file to the repository. -}
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addWorkTree :: UUID -> URLString -> FilePath -> Key -> Maybe FilePath -> Annex ()
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addWorkTree u url file key mtmp = case mtmp of
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Nothing -> go
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Just tmp -> do
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-- Move to final location for large file check.
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pruneTmpWorkDirBefore tmp (\_ -> liftIO $ renameFile tmp file)
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largematcher <- largeFilesMatcher
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large <- checkFileMatcher largematcher file
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if large
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then do
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-- Move back to tmp because addAnnexedFile
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-- needs the file in a different location
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-- than the work tree file.
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liftIO $ renameFile file tmp
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go
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else void $ Command.Add.addSmall file
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where
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go = do
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maybeShowJSON $ JSONChunk [("key", key2file key)]
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setUrlPresent u key url
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ifM (addAnnexedFile file key mtmp)
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( do
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when (isJust mtmp) $
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logStatus key InfoPresent
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, maybe noop (\tmp -> pruneTmpWorkDirBefore tmp (liftIO . nukeFile)) mtmp
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)
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nodownloadWeb :: DownloadOptions -> URLString -> Url.UrlInfo -> FilePath -> Annex (Maybe Key)
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nodownloadWeb o url urlinfo file
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| Url.urlExists urlinfo = if rawOption o
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then nomedia
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else either (const nomedia) usemedia
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=<< youtubeDlFileName url
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| otherwise = do
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warning $ "unable to access url: " ++ url
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return Nothing
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where
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nomedia = do
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let key = Backend.URL.fromUrl url (Url.urlSize urlinfo)
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nodownloadWeb' url key file
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usemedia mediafile = do
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let dest = if isJust (fileOption o)
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then file
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else takeFileName mediafile
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let mediaurl = setDownloader url YoutubeDownloader
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let mediakey = Backend.URL.fromUrl mediaurl Nothing
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nodownloadWeb' mediaurl mediakey dest
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nodownloadWeb' :: URLString -> Key -> FilePath -> Annex (Maybe Key)
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nodownloadWeb' url key file = checkCanAdd file $ do
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showDestinationFile file
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liftIO $ createDirectoryIfMissing True (parentDir file)
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addWorkTree webUUID url file key Nothing
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return (Just key)
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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 -> giveup "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) $ splitc '/' 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 -> giveup $ "bad uri " ++ s
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Just u -> url2file u pathdepth pathmax
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adjustFile :: AddUrlOptions -> FilePath -> FilePath
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adjustFile o = addprefix . addsuffix
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where
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addprefix f = maybe f (++ f) (prefixOption o)
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addsuffix f = maybe f (f ++) (suffixOption o)
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checkCanAdd :: FilePath -> Annex (Maybe a) -> Annex (Maybe a)
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checkCanAdd file a = ifM (isJust <$> (liftIO $ catchMaybeIO $ getSymbolicLinkStatus file))
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( do
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warning $ file ++ " already exists; not overwriting"
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return Nothing
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, ifM ((not <$> Annex.getState Annex.force) <&&> checkIgnored file)
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( do
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warning $ "not adding " ++ file ++ " which is .gitignored (use --force to override)"
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return Nothing
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, a
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)
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)
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