368 lines
11 KiB
Haskell
368 lines
11 KiB
Haskell
{- git-annex command
|
|
-
|
|
- Copyright 2013 Joey Hess <id@joeyh.name>
|
|
-
|
|
- Licensed under the GNU GPL version 3 or higher.
|
|
-}
|
|
|
|
{-# LANGUAGE CPP #-}
|
|
|
|
module Command.ImportFeed where
|
|
|
|
import Text.Feed.Import
|
|
import Text.Feed.Query
|
|
import Text.Feed.Types
|
|
import qualified Data.Set as S
|
|
import qualified Data.Map as M
|
|
import Data.Time.Clock
|
|
import Data.Time.Format
|
|
#if ! MIN_VERSION_time(1,5,0)
|
|
import System.Locale
|
|
#endif
|
|
|
|
import Command
|
|
import qualified Annex
|
|
import qualified Annex.Url as Url
|
|
import qualified Remote
|
|
import qualified Types.Remote as Remote
|
|
import Types.UrlContents
|
|
import Logs.Web
|
|
import qualified Utility.Format
|
|
import Utility.Tmp
|
|
import Command.AddUrl (addUrlFile, downloadRemoteFile, parseRelaxedOption, parseRawOption)
|
|
import Annex.Perms
|
|
import Annex.UUID
|
|
import Backend.URL (fromUrl)
|
|
import Annex.Quvi
|
|
import qualified Utility.Quvi as Quvi
|
|
import Command.AddUrl (addUrlFileQuvi)
|
|
import Types.MetaData
|
|
import Logs.MetaData
|
|
import Annex.MetaData
|
|
|
|
cmd :: Command
|
|
cmd = notBareRepo $
|
|
command "importfeed" SectionCommon "import files from podcast feeds"
|
|
(paramRepeating paramUrl) (seek <$$> optParser)
|
|
|
|
data ImportFeedOptions = ImportFeedOptions
|
|
{ feedUrls :: CmdParams
|
|
, templateOption :: Maybe String
|
|
, relaxedOption :: Bool
|
|
, rawOption :: Bool
|
|
}
|
|
|
|
optParser :: CmdParamsDesc -> Parser ImportFeedOptions
|
|
optParser desc = ImportFeedOptions
|
|
<$> cmdParams desc
|
|
<*> optional (strOption
|
|
( long "template" <> metavar paramFormat
|
|
<> help "template for filenames"
|
|
))
|
|
<*> parseRelaxedOption
|
|
<*> parseRawOption
|
|
|
|
seek :: ImportFeedOptions -> CommandSeek
|
|
seek o = do
|
|
cache <- getCache (templateOption o)
|
|
withStrings (start o cache) (feedUrls o)
|
|
|
|
start :: ImportFeedOptions -> Cache -> URLString -> CommandStart
|
|
start opts cache url = do
|
|
showStart "importfeed" url
|
|
next $ perform opts cache url
|
|
|
|
perform :: ImportFeedOptions -> Cache -> URLString -> CommandPerform
|
|
perform opts cache url = do
|
|
v <- findDownloads url
|
|
case v of
|
|
[] -> do
|
|
feedProblem url "bad feed content; no enclosures to download"
|
|
next $ return True
|
|
l -> do
|
|
ok <- and <$> mapM (performDownload opts cache) l
|
|
unless ok $
|
|
feedProblem url "problem downloading item"
|
|
next $ cleanup url True
|
|
|
|
cleanup :: URLString -> Bool -> CommandCleanup
|
|
cleanup url ok = do
|
|
when ok $
|
|
clearFeedProblem url
|
|
return ok
|
|
|
|
data ToDownload = ToDownload
|
|
{ feed :: Feed
|
|
, feedurl :: URLString
|
|
, item :: Item
|
|
, location :: DownloadLocation
|
|
}
|
|
|
|
data DownloadLocation = Enclosure URLString | QuviLink URLString
|
|
|
|
type ItemId = String
|
|
|
|
data Cache = Cache
|
|
{ knownurls :: S.Set URLString
|
|
, knownitems :: S.Set ItemId
|
|
, template :: Utility.Format.Format
|
|
}
|
|
|
|
getCache :: Maybe String -> Annex Cache
|
|
getCache opttemplate = ifM (Annex.getState Annex.force)
|
|
( ret S.empty S.empty
|
|
, do
|
|
showAction "checking known urls"
|
|
(is, us) <- unzip <$> (mapM knownItems =<< knownUrls)
|
|
ret (S.fromList us) (S.fromList (concat is))
|
|
)
|
|
where
|
|
tmpl = Utility.Format.gen $ fromMaybe defaultTemplate opttemplate
|
|
ret us is = return $ Cache us is tmpl
|
|
|
|
knownItems :: (Key, URLString) -> Annex ([ItemId], URLString)
|
|
knownItems (k, u) = do
|
|
itemids <- S.toList . S.filter (/= noneValue) . S.map fromMetaValue
|
|
. currentMetaDataValues itemIdField
|
|
<$> getCurrentMetaData k
|
|
return (itemids, u)
|
|
|
|
findDownloads :: URLString -> Annex [ToDownload]
|
|
findDownloads u = go =<< downloadFeed u
|
|
where
|
|
go Nothing = pure []
|
|
go (Just f) = catMaybes <$> mapM (mk f) (feedItems f)
|
|
|
|
mk f i = case getItemEnclosure i of
|
|
Just (enclosureurl, _, _) -> return $
|
|
Just $ ToDownload f u i $ Enclosure enclosureurl
|
|
Nothing -> mkquvi f i
|
|
mkquvi f i = case getItemLink i of
|
|
Just link -> ifM (quviSupported link)
|
|
( return $ Just $ ToDownload f u i $ QuviLink link
|
|
, return Nothing
|
|
)
|
|
Nothing -> return Nothing
|
|
|
|
{- Feeds change, so a feed download cannot be resumed. -}
|
|
downloadFeed :: URLString -> Annex (Maybe Feed)
|
|
downloadFeed url
|
|
| Url.parseURIRelaxed url == Nothing = error "invalid feed url"
|
|
| otherwise = do
|
|
showOutput
|
|
uo <- Url.getUrlOptions
|
|
liftIO $ withTmpFile "feed" $ \f h -> do
|
|
hClose h
|
|
ifM (Url.download url f uo)
|
|
( parseFeedString <$> readFileStrictAnyEncoding f
|
|
, return Nothing
|
|
)
|
|
|
|
performDownload :: ImportFeedOptions -> Cache -> ToDownload -> Annex Bool
|
|
performDownload opts cache todownload = case location todownload of
|
|
Enclosure url -> checkknown url $
|
|
rundownload url (takeWhile (/= '?') $ takeExtension url) $ \f -> do
|
|
r <- Remote.claimingUrl url
|
|
if Remote.uuid r == webUUID || rawOption opts
|
|
then do
|
|
urlinfo <- if relaxedOption opts
|
|
then pure Url.assumeUrlExists
|
|
else Url.withUrlOptions (Url.getUrlInfo url)
|
|
maybeToList <$> addUrlFile (relaxedOption opts) url urlinfo f
|
|
else do
|
|
res <- tryNonAsync $ maybe
|
|
(error $ "unable to checkUrl of " ++ Remote.name r)
|
|
(flip id url)
|
|
(Remote.checkUrl r)
|
|
case res of
|
|
Left _ -> return []
|
|
Right (UrlContents sz _) ->
|
|
maybeToList <$>
|
|
downloadRemoteFile r (relaxedOption opts) url f sz
|
|
Right (UrlMulti l) -> do
|
|
kl <- forM l $ \(url', sz, subf) ->
|
|
downloadRemoteFile r (relaxedOption opts) url' (f </> fromSafeFilePath subf) sz
|
|
return $ if all isJust kl
|
|
then catMaybes kl
|
|
else []
|
|
|
|
QuviLink pageurl -> do
|
|
let quviurl = setDownloader pageurl QuviDownloader
|
|
checkknown quviurl $ do
|
|
mp <- withQuviOptions Quvi.query [Quvi.quiet, Quvi.httponly] pageurl
|
|
case mp of
|
|
Nothing -> return False
|
|
Just page -> case headMaybe $ Quvi.pageLinks page of
|
|
Nothing -> return False
|
|
Just link -> do
|
|
let videourl = Quvi.linkUrl link
|
|
checkknown videourl $
|
|
rundownload videourl ("." ++ fromMaybe "m" (Quvi.linkSuffix link)) $ \f ->
|
|
maybeToList <$> addUrlFileQuvi (relaxedOption opts) quviurl videourl f
|
|
where
|
|
forced = Annex.getState Annex.force
|
|
|
|
{- Avoids downloading any items that are already known to be
|
|
- associated with a file in the annex, unless forced. -}
|
|
checkknown url a
|
|
| knownitemid || S.member url (knownurls cache)
|
|
= ifM forced (a, return True)
|
|
| otherwise = a
|
|
|
|
knownitemid = case getItemId (item todownload) of
|
|
Just (_, itemid) -> S.member itemid (knownitems cache)
|
|
_ -> False
|
|
|
|
rundownload url extension getter = do
|
|
dest <- makeunique url (1 :: Integer) $
|
|
feedFile (template cache) todownload extension
|
|
case dest of
|
|
Nothing -> return True
|
|
Just f -> do
|
|
showStart "addurl" f
|
|
ks <- getter f
|
|
if null ks
|
|
then do
|
|
showEndFail
|
|
checkFeedBroken (feedurl todownload)
|
|
else do
|
|
forM_ ks $ \key ->
|
|
ifM (annexGenMetaData <$> Annex.getGitConfig)
|
|
( addMetaData key $ extractMetaData todownload
|
|
, addMetaData key $ minimalMetaData todownload
|
|
)
|
|
showEndOk
|
|
return True
|
|
|
|
{- Find a unique filename to save the url to.
|
|
- If the file exists, prefixes it with a number.
|
|
- When forced, the file may already exist and have the same
|
|
- url, in which case Nothing is returned as it does not need
|
|
- to be re-downloaded. -}
|
|
makeunique url n file = ifM alreadyexists
|
|
( ifM forced
|
|
( ifAnnexed f checksameurl tryanother
|
|
, tryanother
|
|
)
|
|
, return $ Just f
|
|
)
|
|
where
|
|
f = if n < 2
|
|
then file
|
|
else
|
|
let (d, base) = splitFileName file
|
|
in d </> show n ++ "_" ++ base
|
|
tryanother = makeunique url (n + 1) file
|
|
alreadyexists = liftIO $ isJust <$> catchMaybeIO (getSymbolicLinkStatus f)
|
|
checksameurl k = ifM (elem url <$> getUrls k)
|
|
( return Nothing
|
|
, tryanother
|
|
)
|
|
|
|
defaultTemplate :: String
|
|
defaultTemplate = "${feedtitle}/${itemtitle}${extension}"
|
|
|
|
{- Generates a filename to use for a feed item by filling out the template.
|
|
- The filename may not be unique. -}
|
|
feedFile :: Utility.Format.Format -> ToDownload -> String -> FilePath
|
|
feedFile tmpl i extension = Utility.Format.format tmpl $
|
|
M.map sanitizeFilePath $ M.fromList $ extractFields i ++
|
|
[ ("extension", extension)
|
|
, extractField "itempubdate" [pubdate $ item i]
|
|
]
|
|
where
|
|
#if MIN_VERSION_feed(0,3,9)
|
|
pubdate itm = case getItemPublishDate itm :: Maybe (Maybe UTCTime) of
|
|
Just (Just d) -> Just $
|
|
formatTime defaultTimeLocale "%F" d
|
|
-- if date cannot be parsed, use the raw string
|
|
_ -> replace "/" "-" <$> getItemPublishDateString itm
|
|
#else
|
|
pubdate _ = Nothing
|
|
#endif
|
|
|
|
extractMetaData :: ToDownload -> MetaData
|
|
#if MIN_VERSION_feed(0,3,9)
|
|
extractMetaData i = case getItemPublishDate (item i) :: Maybe (Maybe UTCTime) of
|
|
Just (Just d) -> unionMetaData meta (dateMetaData d meta)
|
|
_ -> meta
|
|
#else
|
|
extractMetaData i = meta
|
|
#endif
|
|
where
|
|
tometa (k, v) = (mkMetaFieldUnchecked k, S.singleton (toMetaValue v))
|
|
meta = MetaData $ M.fromList $ map tometa $ extractFields i
|
|
|
|
minimalMetaData :: ToDownload -> MetaData
|
|
minimalMetaData i = case getItemId (item i) of
|
|
(Nothing) -> emptyMetaData
|
|
(Just (_, itemid)) -> MetaData $ M.singleton itemIdField
|
|
(S.singleton $ toMetaValue itemid)
|
|
|
|
{- Extract fields from the feed and item, that are both used as metadata,
|
|
- and to generate the filename. -}
|
|
extractFields :: ToDownload -> [(String, String)]
|
|
extractFields i = map (uncurry extractField)
|
|
[ ("feedtitle", [feedtitle])
|
|
, ("itemtitle", [itemtitle])
|
|
, ("feedauthor", [feedauthor])
|
|
, ("itemauthor", [itemauthor])
|
|
, ("itemsummary", [getItemSummary $ item i])
|
|
, ("itemdescription", [getItemDescription $ item i])
|
|
, ("itemrights", [getItemRights $ item i])
|
|
, ("itemid", [snd <$> getItemId (item i)])
|
|
, ("title", [itemtitle, feedtitle])
|
|
, ("author", [itemauthor, feedauthor])
|
|
]
|
|
where
|
|
feedtitle = Just $ getFeedTitle $ feed i
|
|
itemtitle = getItemTitle $ item i
|
|
feedauthor = getFeedAuthor $ feed i
|
|
itemauthor = getItemAuthor $ item i
|
|
|
|
itemIdField :: MetaField
|
|
itemIdField = mkMetaFieldUnchecked "itemid"
|
|
|
|
extractField :: String -> [Maybe String] -> (String, String)
|
|
extractField k [] = (k, noneValue)
|
|
extractField k (Just v:_)
|
|
| not (null v) = (k, v)
|
|
extractField k (_:rest) = extractField k rest
|
|
|
|
noneValue :: String
|
|
noneValue = "none"
|
|
|
|
{- Called when there is a problem with a feed.
|
|
- Throws an error if the feed is broken, otherwise shows a warning. -}
|
|
feedProblem :: URLString -> String -> Annex ()
|
|
feedProblem url message = ifM (checkFeedBroken url)
|
|
( error $ message ++ " (having repeated problems with feed: " ++ url ++ ")"
|
|
, warning $ "warning: " ++ message
|
|
)
|
|
|
|
{- A feed is only broken if problems have occurred repeatedly, for at
|
|
- least 23 hours. -}
|
|
checkFeedBroken :: URLString -> Annex Bool
|
|
checkFeedBroken url = checkFeedBroken' url =<< feedState url
|
|
checkFeedBroken' :: URLString -> FilePath -> Annex Bool
|
|
checkFeedBroken' url f = do
|
|
prev <- maybe Nothing readish <$> liftIO (catchMaybeIO $ readFile f)
|
|
now <- liftIO getCurrentTime
|
|
case prev of
|
|
Nothing -> do
|
|
createAnnexDirectory (parentDir f)
|
|
liftIO $ writeFile f $ show now
|
|
return False
|
|
Just prevtime -> do
|
|
let broken = diffUTCTime now prevtime > 60 * 60 * 23
|
|
when broken $
|
|
-- Avoid repeatedly complaining about
|
|
-- broken feed.
|
|
clearFeedProblem url
|
|
return broken
|
|
|
|
clearFeedProblem :: URLString -> Annex ()
|
|
clearFeedProblem url = void $ liftIO . tryIO . removeFile =<< feedState url
|
|
|
|
feedState :: URLString -> Annex FilePath
|
|
feedState url = fromRepo $ gitAnnexFeedState $ fromUrl url Nothing
|