547 lines
21 KiB
Haskell
547 lines
21 KiB
Haskell
{- git-annex command
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-
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- Copyright 2011-2021 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU AGPL version 3 or higher.
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-}
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module Command.AddUrl where
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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.Perms
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import Annex.UUID
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import Annex.YoutubeDl
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import Annex.UntrustedFilePath
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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.HtmlDetect
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import Utility.Path.Max
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import qualified Utility.RawFilePath as R
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import qualified Annex.Transfer as Transfer
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import Network.URI
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import qualified System.FilePath.ByteString as P
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cmd :: Command
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cmd = notBareRepo $ withGlobalOptions [jobsOption, jsonOptions, 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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, noRawOption :: Bool
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, fileOption :: Maybe FilePath
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, preserveFilenameOption :: Bool
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, checkGitIgnoreOption :: CheckGitIgnore
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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 $file\""
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)
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parseDownloadOptions :: Bool -> Parser DownloadOptions
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parseDownloadOptions withfileoptions = DownloadOptions
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<$> 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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<*> switch
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( long "no-raw"
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<> help "prevent downloading raw url content, must use special handling"
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)
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<*> (if withfileoptions
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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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<*> (if withfileoptions
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then switch
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( long "preserve-filename"
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<> help "use filename provided by server as-is"
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)
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else pure False)
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<*> Command.Add.checkGitIgnoreSwitch
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seek :: AddUrlOptions -> CommandSeek
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seek o = startConcurrency commandStages $ do
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addunlockedmatcher <- addUnlockedMatcher
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let go (si, (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 $
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startWeb addunlockedmatcher o' si u
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else checkUrl addunlockedmatcher r o' si u
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forM_ (addUrls o) (\u -> go (SeekInput [u], (o, u)))
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case batchOption o of
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Batch fmt -> batchInput fmt (pure . parseBatchInput o) go
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NoBatch -> noop
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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 :: AddUnlockedMatcher -> Remote -> AddUrlOptions -> SeekInput -> URLString -> Annex ()
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checkUrl addunlockedmatcher r o si 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 $ startingAddUrl si u o $ do
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warning (show e)
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next $ return False
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go deffile (Right (UrlContents sz mf)) = do
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f <- maybe (pure deffile) (sanitizeOrPreserveFilePath o) mf
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let f' = adjustFile o (fromMaybe f (fileOption (downloadOptions o)))
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void $ commandAction $ startRemote addunlockedmatcher r o si f' u sz
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go deffile (Right (UrlMulti l)) = case fileOption (downloadOptions o) of
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Nothing ->
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forM_ l $ \(u', sz, f) -> do
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f' <- sanitizeOrPreserveFilePath o f
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let f'' = adjustFile o (deffile </> f')
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void $ commandAction $ startRemote addunlockedmatcher r o si f'' u' sz
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Just f -> case l of
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[] -> noop
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((u',sz,_):[]) -> do
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let f' = adjustFile o f
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void $ commandAction $ startRemote addunlockedmatcher r o si f' u' sz
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_ -> 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 :: AddUnlockedMatcher -> Remote -> AddUrlOptions -> SeekInput -> FilePath -> URLString -> Maybe Integer -> CommandStart
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startRemote addunlockedmatcher r o si file uri sz = do
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pathmax <- liftIO $ fileNameLengthLimit "."
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let file' = joinPath $ map (truncateFilePath pathmax) $
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splitDirectories file
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startingAddUrl si uri o $ do
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showNote $ "from " ++ Remote.name r
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showDestinationFile file'
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performRemote addunlockedmatcher r o uri (toRawFilePath file') sz
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performRemote :: AddUnlockedMatcher -> Remote -> AddUrlOptions -> URLString -> RawFilePath -> Maybe Integer -> CommandPerform
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performRemote addunlockedmatcher 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 (fromKey keySize key), loguri)
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geturi = next $ isJust <$> downloadRemoteFile addunlockedmatcher r (downloadOptions o) uri file sz
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downloadRemoteFile :: AddUnlockedMatcher -> Remote -> DownloadOptions -> URLString -> RawFilePath -> Maybe Integer -> Annex (Maybe Key)
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downloadRemoteFile addunlockedmatcher r o uri file sz = checkCanAdd o file $ \canadd -> do
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let urlkey = Backend.URL.fromUrl uri sz
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createWorkTreeDirectory (parentDir file)
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ifM (Annex.getState Annex.fast <||> pure (relaxedOption o))
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( do
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addWorkTree canadd addunlockedmatcher (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 ->
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fst <$> Remote.verifiedAction (Remote.retrieveKeyFile r urlkey af dest p)
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ret <- downloadWith canadd addunlockedmatcher 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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af = AssociatedFile (Just file)
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startWeb :: AddUnlockedMatcher -> AddUrlOptions -> SeekInput -> URLString -> CommandStart
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startWeb addunlockedmatcher o si 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 = startingAddUrl si urlstring o $
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if relaxedOption (downloadOptions o)
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then go' url Url.assumeUrlExists
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else Url.withUrlOptions (Url.getUrlInfo urlstring) >>= \case
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Right urlinfo -> go' url urlinfo
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Left err -> do
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warning err
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next $ return False
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go' url urlinfo = do
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pathmax <- liftIO $ fileNameLengthLimit "."
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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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Just sf -> do
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f <- sanitizeOrPreserveFilePath o sf
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if preserveFilenameOption (downloadOptions o)
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then pure f
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else 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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_ -> pure $ url2file url (pathdepthOption o) pathmax
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performWeb addunlockedmatcher o urlstring (toRawFilePath file) urlinfo
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sanitizeOrPreserveFilePath :: AddUrlOptions -> FilePath -> Annex FilePath
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sanitizeOrPreserveFilePath o f
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| preserveFilenameOption (downloadOptions o) && not (null f) = do
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checkPreserveFileNameSecurity f
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return f
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| otherwise = do
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pathmax <- liftIO $ fileNameLengthLimit "."
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return $ truncateFilePath pathmax $ sanitizeFilePath f
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-- sanitizeFilePath avoids all these security problems
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-- (and probably others, but at least this catches the most egrarious ones).
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checkPreserveFileNameSecurity :: FilePath -> Annex ()
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checkPreserveFileNameSecurity f = do
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checksecurity escapeSequenceInFilePath False "escape sequence"
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checksecurity pathTraversalInFilePath True "path traversal"
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checksecurity gitDirectoryInFilePath True "contains a .git directory"
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where
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checksecurity p canshow d = when (p f) $
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giveup $ concat
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[ "--preserve-filename was used, but the filename "
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, if canshow then "(" ++ f ++ ") " else ""
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, "has a security problem (" ++ d ++ "), not adding."
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]
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performWeb :: AddUnlockedMatcher -> AddUrlOptions -> URLString -> RawFilePath -> Url.UrlInfo -> CommandPerform
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performWeb addunlockedmatcher o url file urlinfo = ifAnnexed file addurl geturl
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where
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geturl = next $ isJust <$> addUrlFile addunlockedmatcher (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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, checkRaw (downloadOptions o) $ return (Url.urlExists urlinfo, Url.urlSize urlinfo == fromKey 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 -> RawFilePath -> 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 (fromRawFilePath 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 key url'
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logChange key u InfoPresent
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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 :: AddUnlockedMatcher -> DownloadOptions -> URLString -> Url.UrlInfo -> RawFilePath -> Annex (Maybe Key)
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addUrlFile addunlockedmatcher o url urlinfo file =
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ifM (Annex.getState Annex.fast <||> pure (relaxedOption o))
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( nodownloadWeb addunlockedmatcher o url urlinfo file
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, downloadWeb addunlockedmatcher o url urlinfo file
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)
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downloadWeb :: AddUnlockedMatcher -> DownloadOptions -> URLString -> Url.UrlInfo -> RawFilePath -> Annex (Maybe Key)
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downloadWeb addunlockedmatcher 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 = Url.withUrlOptions $ downloadUrl urlkey p [url] f
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go Nothing = return Nothing
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go (Just tmp) = ifM (pure (not (rawOption o)) <&&> liftIO (isHtmlFile (fromRawFilePath tmp)))
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( tryyoutubedl tmp
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, normalfinish tmp
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)
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normalfinish tmp = checkCanAdd o file $ \canadd -> do
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showDestinationFile (fromRawFilePath file)
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createWorkTreeDirectory (parentDir file)
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Just <$> finishDownloadWith canadd addunlockedmatcher tmp webUUID url file
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-- Ask youtube-dl what filename it will download first,
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-- so it's only used when the file contains embedded media.
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tryyoutubedl tmp = youtubeDlFileNameHtmlOnly url >>= \case
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Right mediafile ->
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let f = youtubeDlDestFile o file (toRawFilePath mediafile)
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in ifAnnexed f
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(alreadyannexed (fromRawFilePath f))
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(dl f)
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Left _ -> checkRaw o (normalfinish tmp)
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where
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dl dest = withTmpWorkDir mediakey $ \workdir -> do
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let cleanuptmp = pruneTmpWorkDirBefore tmp (liftIO . removeWhenExistsWith R.removeLink)
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showNote "using youtube-dl"
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Transfer.notifyTransfer Transfer.Download url $
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Transfer.download' webUUID mediakey (AssociatedFile Nothing) Nothing Transfer.noRetry $ \p ->
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youtubeDl url (fromRawFilePath workdir) p >>= \case
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Right (Just mediafile) -> do
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cleanuptmp
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checkCanAdd o dest $ \canadd -> do
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showDestinationFile (fromRawFilePath dest)
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addWorkTree canadd addunlockedmatcher webUUID mediaurl dest mediakey (Just (toRawFilePath mediafile))
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return $ Just mediakey
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Right Nothing -> checkRaw o (normalfinish tmp)
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Left msg -> do
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cleanuptmp
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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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checkRaw :: DownloadOptions -> Annex a -> Annex a
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checkRaw o a
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| noRawOption o = giveup "Unable to use youtube-dl or a special remote and --no-raw was specified."
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| otherwise = a
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{- The destination file is not known at start time unless the user provided
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- a filename. It's not displayed then for output consistency,
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- but is added to the json when available. -}
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startingAddUrl :: SeekInput -> URLString -> AddUrlOptions -> CommandPerform -> CommandStart
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startingAddUrl si url o p = starting "addurl" (ActionItemOther (Just url)) si $ do
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case fileOption (downloadOptions o) of
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Nothing -> noop
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Just file -> maybeShowJSON $ JSONChunk [("file", file)]
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p
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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 :: CanAddFile -> AddUnlockedMatcher -> (FilePath -> MeterUpdate -> Annex Bool) -> Key -> UUID -> URLString -> RawFilePath -> Annex (Maybe Key)
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downloadWith canadd addunlockedmatcher 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) = Just <$> finishDownloadWith canadd addunlockedmatcher 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 RawFilePath)
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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 Nothing Transfer.stdRetry $ \p -> do
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createAnnexDirectory (parentDir tmp)
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downloader (fromRawFilePath 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 :: CanAddFile -> AddUnlockedMatcher -> RawFilePath -> UUID -> URLString -> RawFilePath -> Annex Key
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finishDownloadWith canadd addunlockedmatcher 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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key <- fst <$> genKey source nullMeterUpdate backend
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addWorkTree canadd addunlockedmatcher u url file key (Just tmp)
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return 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 = alterKey key $ \d -> d
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{ keySize = Url.urlSize urlinfo
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}
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{- Adds worktree file to the repository. -}
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addWorkTree :: CanAddFile -> AddUnlockedMatcher -> UUID -> URLString -> RawFilePath -> Key -> Maybe RawFilePath -> Annex ()
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addWorkTree _ addunlockedmatcher 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 $ \_ -> do
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createWorkTreeDirectory (P.takeDirectory file)
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liftIO $ renameFile
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(fromRawFilePath tmp)
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(fromRawFilePath 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
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(fromRawFilePath file)
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(fromRawFilePath tmp)
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go
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else void $ Command.Add.addSmall noci file
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where
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go = do
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maybeShowJSON $ JSONChunk [("key", serializeKey key)]
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setUrlPresent key url
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logChange key u InfoPresent
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ifM (addAnnexedFile noci addunlockedmatcher 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 . removeWhenExistsWith R.removeLink)) mtmp
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)
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-- git does not need to check ignores, because that has already
|
|
-- been done, as witnessed by the CannAddFile.
|
|
noci = CheckGitIgnore False
|
|
|
|
nodownloadWeb :: AddUnlockedMatcher -> DownloadOptions -> URLString -> Url.UrlInfo -> RawFilePath -> Annex (Maybe Key)
|
|
nodownloadWeb addunlockedmatcher o url urlinfo file
|
|
| Url.urlExists urlinfo = if rawOption o
|
|
then nomedia
|
|
else youtubeDlFileName url >>= \case
|
|
Right mediafile -> usemedia (toRawFilePath mediafile)
|
|
Left _ -> checkRaw o nomedia
|
|
| otherwise = do
|
|
warning $ "unable to access url: " ++ url
|
|
return Nothing
|
|
where
|
|
nomedia = do
|
|
let key = Backend.URL.fromUrl url (Url.urlSize urlinfo)
|
|
nodownloadWeb' o addunlockedmatcher url key file
|
|
usemedia mediafile = do
|
|
let dest = youtubeDlDestFile o file mediafile
|
|
let mediaurl = setDownloader url YoutubeDownloader
|
|
let mediakey = Backend.URL.fromUrl mediaurl Nothing
|
|
nodownloadWeb' o addunlockedmatcher mediaurl mediakey dest
|
|
|
|
youtubeDlDestFile :: DownloadOptions -> RawFilePath -> RawFilePath -> RawFilePath
|
|
youtubeDlDestFile o destfile mediafile
|
|
| isJust (fileOption o) = destfile
|
|
| otherwise = P.takeFileName mediafile
|
|
|
|
nodownloadWeb' :: DownloadOptions -> AddUnlockedMatcher -> URLString -> Key -> RawFilePath -> Annex (Maybe Key)
|
|
nodownloadWeb' o addunlockedmatcher url key file = checkCanAdd o file $ \canadd -> do
|
|
showDestinationFile (fromRawFilePath file)
|
|
createWorkTreeDirectory (parentDir file)
|
|
addWorkTree canadd addunlockedmatcher webUUID url file key Nothing
|
|
return (Just key)
|
|
|
|
url2file :: URI -> Maybe Int -> Int -> FilePath
|
|
url2file url pathdepth pathmax = case pathdepth of
|
|
Nothing -> truncateFilePath pathmax $ sanitizeFilePath fullurl
|
|
Just depth
|
|
| depth >= length urlbits -> frombits id
|
|
| depth > 0 -> frombits $ drop depth
|
|
| depth < 0 -> frombits $ reverse . take (negate depth) . reverse
|
|
| otherwise -> giveup "bad --pathdepth"
|
|
where
|
|
fullurl = concat
|
|
[ maybe "" uriRegName (uriAuthority url)
|
|
, uriPath url
|
|
, uriQuery url
|
|
]
|
|
frombits a = intercalate "/" $ a urlbits
|
|
urlbits = map (truncateFilePath pathmax . sanitizeFilePath) $
|
|
filter (not . null) $ splitc '/' fullurl
|
|
|
|
urlString2file :: URLString -> Maybe Int -> Int -> FilePath
|
|
urlString2file s pathdepth pathmax = case Url.parseURIRelaxed s of
|
|
Nothing -> giveup $ "bad uri " ++ s
|
|
Just u -> url2file u pathdepth pathmax
|
|
|
|
adjustFile :: AddUrlOptions -> FilePath -> FilePath
|
|
adjustFile o = addprefix . addsuffix
|
|
where
|
|
addprefix f = maybe f (++ f) (prefixOption o)
|
|
addsuffix f = maybe f (f ++) (suffixOption o)
|
|
|
|
data CanAddFile = CanAddFile
|
|
|
|
checkCanAdd :: DownloadOptions -> RawFilePath -> (CanAddFile -> Annex (Maybe a)) -> Annex (Maybe a)
|
|
checkCanAdd o file a = ifM (isJust <$> (liftIO $ catchMaybeIO $ R.getSymbolicLinkStatus file))
|
|
( do
|
|
warning $ fromRawFilePath file ++ " already exists; not overwriting"
|
|
return Nothing
|
|
, ifM (checkIgnored (checkGitIgnoreOption o) file)
|
|
( do
|
|
warning $ "not adding " ++ fromRawFilePath file ++ " which is .gitignored (use --no-check-gitignore to override)"
|
|
return Nothing
|
|
, a CanAddFile
|
|
)
|
|
)
|