{-# LANGUAGE CPP #-}
#if (defined(MIN_VERSION_base) && MIN_VERSION_base(4,8,0))
#else
import Control.Applicative ((<$>), (<*>))
#endif
import Control.Monad (when, unless)
import qualified Data.ByteString.Char8 as B
import Data.Char (isDigit, toLower, toUpper)
import Data.List
import Data.Maybe
import Data.Semigroup ((<>))
import Data.Text (Text)
import qualified Data.Text as T
import Network.HTTP.Types (decodePathSegments, extractPath)
import Network.HTTP.Directory
import Options.Applicative (auto, fullDesc, header, optional, progDescDoc)
import qualified Options.Applicative.Help.Pretty as P
import Paths_fedora_img_dl (version)
import SimpleCmd (cmd_, error', grep_, pipe_, pipeBool, pipeFile_)
import SimpleCmdArgs
import System.Directory (createDirectoryIfMissing, doesDirectoryExist,
doesFileExist, getPermissions, removeFile,
setCurrentDirectory, writable)
import System.Environment.XDG.UserDir (getUserDir)
import System.FilePath (joinPath, takeExtension, takeFileName, (</>), (<.>))
import System.Posix.Files (createSymbolicLink, fileSize, getFileStatus,
readSymbolicLink)
import Text.Read
import qualified Text.ParserCombinators.ReadP as R
import qualified Text.ParserCombinators.ReadPrec as RP
{-# ANN module "HLint: ignore Use camelCase" #-}
data FedoraEdition = Cloud
| Container
| Everything
| Server
| Silverblue
| Workstation
| Cinnamon
| KDE
| LXDE
| LXQt
| Mate_Compiz
| Soas
| Xfce
deriving (Show, Enum, Bounded, Eq)
instance Read FedoraEdition where
readPrec = do
s <- look
let e = map toLower s
editionMap =
map (\ ed -> (map toLower (show ed), ed)) [minBound..maxBound]
res = lookup e editionMap
case res of
Nothing -> error' "unknown edition" >> RP.pfail
Just ed -> RP.lift (R.string e) >> return ed
fedoraSpins :: [FedoraEdition]
fedoraSpins = [Cinnamon ..]
main :: IO ()
main = do
let pdoc = Just $ P.text "Tool for downloading Fedora iso file images."
P.<$$> P.text ("RELEASE = " <> intercalate ", " ["rawhide", "respin", "beta", "or Release version"])
P.<$$> P.text "EDITION = " <> P.lbrace <> P.align (P.fillCat (P.punctuate P.comma (map (P.text . map toLower . show) [(minBound :: FedoraEdition)..maxBound])) <> P.rbrace)
P.<$$> P.text "See also <https://fedoramagazine.org/verify-fedora-iso-file>."
simpleCmdArgsWithMods (Just version) (fullDesc <> header "Fedora iso downloader" <> progDescDoc pdoc) $
findISO
<$> switchWith 'g' "gpg-keys" "Import Fedora GPG keys for verifying checksum file"
<*> switchWith 'n' "dry-run" "Don't actually download anything"
<*> optional (strOptionWith 'm' "mirror" "HOST" "default https://download.fedoraproject.org")
<*> strOptionalWith 'a' "arch" "ARCH" "architecture (default x86_64)" "x86_64"
<*> optionalWith auto 'e' "edition" "EDITION" "Fedora edition: workstation [default]" Workstation
<*> strArg "RELEASE"
findISO :: Bool -> Bool -> Maybe String -> String -> FedoraEdition -> String -> IO ()
findISO gpg dryrun mhost arch edition tgtrel = do
(mlocn, relpath, mprefix, mrelease) <-
case tgtrel of
"rawhide" -> return (Nothing, "development/rawhide", Nothing, Just "Rawhide")
-- FIXME: version hardcoding for respin, beta, and 30
"respin" -> do
let mlocn = Just "https://dl.fedoraproject.org"
when (isJust mhost && mlocn /= mhost) $
error' "Cannot specify host for this image"
return (mlocn, "pub/alt/live-respins/", Just ("F29-" <> liveRespin edition <> "-x86_64"), Nothing)
"beta" -> return (Nothing ,"releases/test/30_Beta", Nothing, Just "30_Beta") -- FIXME: hardcoding
rel | all isDigit rel -> return (Nothing, "releases" </> rel, Nothing, Just rel)
_ -> error' "Unknown release"
let host = fromMaybe "https://download.fedoraproject.org" $
if isJust mlocn then mlocn else mhost
toppath = if null ((decodePathSegments . extractPath) (B.pack host))
then "pub/fedora/linux"
else ""
url = if isJust mlocn then host </> relpath else joinPath [host, toppath, relpath, if edition `elem` fedoraSpins then "Spins" else show edition, arch, editionMedia edition <> "/"]
prefix = fromMaybe (intercalate "-" (["Fedora", show edition, editionType edition, arch] <> maybeToList mrelease)) mprefix
(fileurl, remotesize, mchecksum) <- findURL url prefix (tgtrel == "respin")
dlDir <- getUserDir "DOWNLOAD"
if dryrun
then do
dirExists <- doesDirectoryExist dlDir
when dirExists $ setCurrentDirectory dlDir
else do
createDirectoryIfMissing False dlDir
setCurrentDirectory dlDir
let localfile = takeFileName fileurl
symlink = dlDir </> prefix <> "-latest" <.> takeExtension fileurl
downloadFile fileurl remotesize localfile
fileChecksum mchecksum
updateSymlink localfile symlink
where
findURL :: String -> String -> Bool -> IO (String, Maybe Integer, Maybe String)
findURL url prefix chksumPrefix = do
mgr <- httpManager
redirect <- httpRedirect mgr url
let finalUrl = maybe url B.unpack redirect
hrefs <- httpDirectory mgr finalUrl
let mfile = listToMaybe $ filter (T.pack prefix `T.isPrefixOf`) hrefs :: Maybe Text
mchecksum = listToMaybe $ filter ((if chksumPrefix then T.isPrefixOf else T.isSuffixOf) (T.pack "CHECKSUM")) hrefs
case mfile of
Nothing ->
error' $ "not found " <> finalUrl
Just file -> do
let finalfile = finalUrl </> T.unpack file
putStrLn finalfile
size <- httpFileSize mgr finalfile
return (finalfile, size, (finalUrl </>) . T.unpack <$> mchecksum)
updateSymlink :: FilePath -> FilePath -> IO ()
updateSymlink target symlink =
unless dryrun $ do
symExists <- doesFileExist symlink
if symExists
then do
linktarget <- readSymbolicLink symlink
when (linktarget /= target) $ do
removeFile symlink
createSymbolicLink target symlink
putStrLn $ unwords [symlink, "->", target]
else do
createSymbolicLink target symlink
putStrLn $ unwords [symlink, "->", target]
downloadFile :: String -> Maybe Integer -> String -> IO ()
downloadFile url remotesize localfile = do
exists <- doesFileExist localfile
if exists
then do
localsize <- fileSize <$> getFileStatus localfile
if Just (fromIntegral localsize) == remotesize
then
putStrLn "File already fully downloaded"
else do
canwrite <- writable <$> getPermissions localfile
unless canwrite $ error' "file does have write permission, aborting!"
unless dryrun $
cmd_ "curl" ["-C", "-", "-O", url]
else
unless dryrun $
cmd_ "curl" ["-C", "-", "-O", url]
fileChecksum :: Maybe FilePath -> IO ()
fileChecksum mchecksum =
case mchecksum of
Nothing -> return ()
Just url -> do
let checksum = takeFileName url
exists <- doesFileExist checksum
unless exists $
cmd_ "curl" ["-C", "-", "-s", "-S", "-O", url]
pgp <- grep_ "PGP" checksum
when (gpg && pgp) $ do
havekey <- checkForFedoraKeys
unless havekey $ do
putStrLn "Importing Fedora GPG keys:\n"
-- https://fedoramagazine.org/verify-fedora-iso-file/
pipe_ ("curl",["-s", "-S", "https://getfedora.org/static/fedora.gpg"]) ("gpg",["--import"])
putStrLn ""
chkgpg <- if pgp
then checkForFedoraKeys
else return False
let shasum = if "CHECKSUM512" `isPrefixOf` checksum
then "sha512sum" else "sha256sum"
if chkgpg then do
putStrLn $ "Running gpg verify and " <> shasum <> ":"
pipeFile_ checksum ("gpg",["-q"]) (shasum, ["-c", "--ignore-missing"])
else do
putStrLn $ "Running " <> shasum <> ":"
cmd_ shasum ["-c", "--ignore-missing", checksum]
checkForFedoraKeys :: IO Bool
checkForFedoraKeys =
pipeBool ("gpg",["--list-keys"]) ("grep", ["-q", " Fedora .*(" ++ tgtrel ++ ").*@fedoraproject.org>"])
editionType :: FedoraEdition -> String
editionType Server = "dvd"
editionType Silverblue = "ostree"
editionType Everything = "netinst"
editionType Container = "Base"
editionType _ = "Live"
editionMedia :: FedoraEdition -> String
editionMedia Container = "images"
editionMedia _ = "iso"
liveRespin :: FedoraEdition -> String
liveRespin = take 4 . map toUpper . show