{-# LANGUAGE TypeFamilies #-}

module Propellor.Property.Debootstrap (
	Url,
	DebootstrapConfig(..),
	built,
	built',
	extractSuite,
	installed,
	sourceInstall,
) where

import Propellor.Base
import qualified Propellor.Property.Apt as Apt
import Propellor.Property.Chroot.Util
import Propellor.Property.Qemu
import Utility.Path

import Data.List
import Data.Char
import qualified Data.Semigroup as Sem
import System.Posix.Directory
import System.Posix.Files

type Url = String

-- | A data type for debootstrap configuration.
-- mempty is a default debootstrapped system.
data DebootstrapConfig
	= DefaultConfig
	| MinBase
	| BuilddD
	| DebootstrapParam String
	| UseEmulation
	| DebootstrapProxy Url
	| DebootstrapMirror Url
	| UseOldGpgKeyring
	-- ^ Debootstrap using the keyring of old and removed gpg keys.
	-- This is needed to debootstrap ancient stable releases of Debian.
	| DebootstrapConfig :+ DebootstrapConfig
	deriving (Int -> DebootstrapConfig -> ShowS
[DebootstrapConfig] -> ShowS
DebootstrapConfig -> [Char]
(Int -> DebootstrapConfig -> ShowS)
-> (DebootstrapConfig -> [Char])
-> ([DebootstrapConfig] -> ShowS)
-> Show DebootstrapConfig
forall a.
(Int -> a -> ShowS) -> (a -> [Char]) -> ([a] -> ShowS) -> Show a
$cshowsPrec :: Int -> DebootstrapConfig -> ShowS
showsPrec :: Int -> DebootstrapConfig -> ShowS
$cshow :: DebootstrapConfig -> [Char]
show :: DebootstrapConfig -> [Char]
$cshowList :: [DebootstrapConfig] -> ShowS
showList :: [DebootstrapConfig] -> ShowS
Show)

instance Sem.Semigroup DebootstrapConfig where
	<> :: DebootstrapConfig -> DebootstrapConfig -> DebootstrapConfig
(<>) = DebootstrapConfig -> DebootstrapConfig -> DebootstrapConfig
(:+)

instance Monoid DebootstrapConfig where
	mempty :: DebootstrapConfig
mempty  = DebootstrapConfig
DefaultConfig
	mappend :: DebootstrapConfig -> DebootstrapConfig -> DebootstrapConfig
mappend = DebootstrapConfig -> DebootstrapConfig -> DebootstrapConfig
forall a. Semigroup a => a -> a -> a
(Sem.<>)

toParams :: DebootstrapConfig -> [CommandParam]
toParams :: DebootstrapConfig -> [CommandParam]
toParams DebootstrapConfig
DefaultConfig = []
toParams DebootstrapConfig
MinBase = [[Char] -> CommandParam
Param [Char]
"--variant=minbase"]
toParams DebootstrapConfig
BuilddD = [[Char] -> CommandParam
Param [Char]
"--variant=buildd"]
toParams (DebootstrapParam [Char]
p) = [[Char] -> CommandParam
Param [Char]
p]
toParams DebootstrapConfig
UseEmulation = []
toParams (DebootstrapProxy [Char]
_) = []
toParams (DebootstrapMirror [Char]
_) = []
toParams DebootstrapConfig
UseOldGpgKeyring = [[Char] -> CommandParam
Param [Char]
"--keyring=/usr/share/keyrings/debian-archive-removed-keys.gpg"]
toParams (DebootstrapConfig
c1 :+ DebootstrapConfig
c2) = DebootstrapConfig -> [CommandParam]
toParams DebootstrapConfig
c1 [CommandParam] -> [CommandParam] -> [CommandParam]
forall a. Semigroup a => a -> a -> a
<> DebootstrapConfig -> [CommandParam]
toParams DebootstrapConfig
c2

useEmulation :: DebootstrapConfig -> Bool
useEmulation :: DebootstrapConfig -> Bool
useEmulation DebootstrapConfig
UseEmulation = Bool
True
useEmulation (DebootstrapConfig
a :+ DebootstrapConfig
b) = DebootstrapConfig -> Bool
useEmulation DebootstrapConfig
a Bool -> Bool -> Bool
|| DebootstrapConfig -> Bool
useEmulation DebootstrapConfig
b
useEmulation DebootstrapConfig
_ = Bool
False

debootstrapProxy :: DebootstrapConfig -> Maybe Url
debootstrapProxy :: DebootstrapConfig -> Maybe [Char]
debootstrapProxy (DebootstrapProxy [Char]
u) = [Char] -> Maybe [Char]
forall a. a -> Maybe a
Just [Char]
u
debootstrapProxy (DebootstrapConfig
a :+ DebootstrapConfig
b) = DebootstrapConfig -> Maybe [Char]
debootstrapProxy DebootstrapConfig
a Maybe [Char] -> Maybe [Char] -> Maybe [Char]
forall a. Maybe a -> Maybe a -> Maybe a
forall (f :: * -> *) a. Alternative f => f a -> f a -> f a
<|> DebootstrapConfig -> Maybe [Char]
debootstrapProxy DebootstrapConfig
b
debootstrapProxy DebootstrapConfig
_ = Maybe [Char]
forall a. Maybe a
Nothing

debootstrapMirror :: DebootstrapConfig -> Maybe Url
debootstrapMirror :: DebootstrapConfig -> Maybe [Char]
debootstrapMirror (DebootstrapMirror [Char]
u) = [Char] -> Maybe [Char]
forall a. a -> Maybe a
Just [Char]
u
debootstrapMirror (DebootstrapConfig
a :+ DebootstrapConfig
b) = DebootstrapConfig -> Maybe [Char]
debootstrapMirror DebootstrapConfig
a Maybe [Char] -> Maybe [Char] -> Maybe [Char]
forall a. Maybe a -> Maybe a -> Maybe a
forall (f :: * -> *) a. Alternative f => f a -> f a -> f a
<|> DebootstrapConfig -> Maybe [Char]
debootstrapMirror DebootstrapConfig
b
debootstrapMirror DebootstrapConfig
_ = Maybe [Char]
forall a. Maybe a
Nothing

-- | Builds a chroot in the given directory using debootstrap.
--
-- The System can be any OS and architecture that debootstrap
-- and the kernel support.
--
-- When the System is architecture that the kernel does not support,
-- it can still be bootstrapped using emulation. This is determined
-- by checking `supportsArch`, or can be configured with `UseEmulation`.
built :: FilePath -> System -> DebootstrapConfig -> Property Linux
built :: [Char] -> System -> DebootstrapConfig -> Property Linux
built [Char]
target system :: System
system@(System Distribution
_ Architecture
targetarch) DebootstrapConfig
config =
	[Char]
-> (OuterMetaTypesWitness
      '[ 'Targeting 'OSDebian, 'Targeting 'OSBuntish,
         'Targeting 'OSArchLinux]
    -> Maybe System -> Propellor Result)
-> Property Linux
forall {k} (metatypes :: k).
SingI metatypes =>
[Char]
-> (OuterMetaTypesWitness metatypes
    -> Maybe System -> Propellor Result)
-> Property (MetaTypes metatypes)
withOS ([Char]
"debootstrapped " [Char] -> ShowS
forall a. [a] -> [a] -> [a]
++ [Char]
target) OuterMetaTypesWitness
  '[ 'Targeting 'OSDebian, 'Targeting 'OSBuntish,
     'Targeting 'OSArchLinux]
-> Maybe System -> Propellor Result
go
  where
	go :: OuterMetaTypesWitness
  '[ 'Targeting 'OSDebian, 'Targeting 'OSBuntish,
     'Targeting 'OSArchLinux]
-> Maybe System -> Propellor Result
go OuterMetaTypesWitness
  '[ 'Targeting 'OSDebian, 'Targeting 'OSBuntish,
     'Targeting 'OSArchLinux]
w (Just System
hostos)
		| System -> Architecture -> Bool
supportsArch System
hostos Architecture
targetarch Bool -> Bool -> Bool
&& Bool -> Bool
not (DebootstrapConfig -> Bool
useEmulation DebootstrapConfig
config) =
			OuterMetaTypesWitness
  '[ 'Targeting 'OSDebian, 'Targeting 'OSBuntish,
     'Targeting 'OSArchLinux]
-> Property Linux -> Propellor Result
forall (inner :: [MetaType]) (outer :: [MetaType]).
EnsurePropertyAllowed inner outer =>
OuterMetaTypesWitness outer
-> Property (MetaTypes inner) -> Propellor Result
ensureProperty OuterMetaTypesWitness
  '[ 'Targeting 'OSDebian, 'Targeting 'OSBuntish,
     'Targeting 'OSArchLinux]
w (Property Linux -> Propellor Result)
-> Property Linux -> Propellor Result
forall a b. (a -> b) -> a -> b
$
				Property Linux
-> [Char] -> System -> DebootstrapConfig -> Property Linux
built' (RevertableProperty Linux Linux -> Property Linux
forall setupmetatypes undometatypes.
RevertableProperty setupmetatypes undometatypes
-> Property setupmetatypes
setupRevertableProperty RevertableProperty Linux Linux
installed)
					[Char]
target System
system DebootstrapConfig
config
	go OuterMetaTypesWitness
  '[ 'Targeting 'OSDebian, 'Targeting 'OSBuntish,
     'Targeting 'OSArchLinux]
w Maybe System
_ = OuterMetaTypesWitness
  '[ 'Targeting 'OSDebian, 'Targeting 'OSBuntish,
     'Targeting 'OSArchLinux]
-> Property Linux -> Propellor Result
forall (inner :: [MetaType]) (outer :: [MetaType]).
EnsurePropertyAllowed inner outer =>
OuterMetaTypesWitness outer
-> Property (MetaTypes inner) -> Propellor Result
ensureProperty OuterMetaTypesWitness
  '[ 'Targeting 'OSDebian, 'Targeting 'OSBuntish,
     'Targeting 'OSArchLinux]
w (Property Linux -> Propellor Result)
-> Property Linux -> Propellor Result
forall a b. (a -> b) -> a -> b
$ do
		let p :: CombinedType (Property Linux) (Property Linux)
p = RevertableProperty Linux Linux -> Property Linux
forall setupmetatypes undometatypes.
RevertableProperty setupmetatypes undometatypes
-> Property setupmetatypes
setupRevertableProperty RevertableProperty Linux Linux
foreignBinariesEmulated
			Property Linux
-> Property Linux -> CombinedType (Property Linux) (Property Linux)
forall x y. Combines x y => x -> y -> CombinedType x y
`before` RevertableProperty Linux Linux -> Property Linux
forall setupmetatypes undometatypes.
RevertableProperty setupmetatypes undometatypes
-> Property setupmetatypes
setupRevertableProperty RevertableProperty Linux Linux
installed
		Property Linux
-> [Char] -> System -> DebootstrapConfig -> Property Linux
built' Property Linux
p [Char]
target System
system (DebootstrapConfig
config DebootstrapConfig -> DebootstrapConfig -> DebootstrapConfig
:+ DebootstrapConfig
UseEmulation)

-- | Like `built`,  but uses the provided Property to install debootstrap.
built' :: Property Linux -> FilePath -> System -> DebootstrapConfig -> Property Linux
built' :: Property Linux
-> [Char] -> System -> DebootstrapConfig -> Property Linux
built' Property Linux
installprop [Char]
target system :: System
system@(System Distribution
_ Architecture
arch) DebootstrapConfig
config = 
	CombinedType (Property Linux) (Property Linux)
Property Linux
go Property Linux
-> Property Linux -> CombinedType (Property Linux) (Property Linux)
forall x y. Combines x y => x -> y -> CombinedType x y
`before` Property Linux
oldpermfix
  where
	go :: CombinedType (Property Linux) (Property Linux)
go = IO Bool -> Property Linux -> Property Linux
forall (p :: * -> *) i (m :: * -> *).
(Checkable p i, LiftPropellor m) =>
m Bool -> p i -> Property i
check ([Char] -> IO Bool
isUnpopulated [Char]
target IO Bool -> IO Bool -> IO Bool
forall (m :: * -> *). Monad m => m Bool -> m Bool -> m Bool
<||> IO Bool
ispartial) Property Linux
setupprop
		Property Linux
-> Property Linux -> CombinedType (Property Linux) (Property Linux)
forall x y. Combines x y => x -> y -> CombinedType x y
`requires` Property Linux
installprop

	setupprop :: Property Linux
	setupprop :: Property Linux
setupprop = [Char] -> Propellor Result -> Property Linux
forall {k} (metatypes :: k).
SingI metatypes =>
[Char] -> Propellor Result -> Property (MetaTypes metatypes)
property ([Char]
"debootstrapped " [Char] -> ShowS
forall a. [a] -> [a] -> [a]
++ [Char]
target) (Propellor Result -> Property Linux)
-> Propellor Result -> Property Linux
forall a b. (a -> b) -> a -> b
$ IO Result -> Propellor Result
forall a. IO a -> Propellor a
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO Result -> Propellor Result) -> IO Result -> Propellor Result
forall a b. (a -> b) -> a -> b
$ do
		Bool -> [Char] -> IO ()
createDirectoryIfMissing Bool
True [Char]
target
		[Char]
suite <- case System -> Maybe [Char]
extractSuite System
system of
			Maybe [Char]
Nothing -> [Char] -> IO [Char]
forall (m :: * -> *) a. MonadIO m => [Char] -> m a
errorMessage ([Char] -> IO [Char]) -> [Char] -> IO [Char]
forall a b. (a -> b) -> a -> b
$ [Char]
"don't know how to debootstrap " [Char] -> ShowS
forall a. [a] -> [a] -> [a]
++ System -> [Char]
forall a. Show a => a -> [Char]
show System
system
			Just [Char]
s -> [Char] -> IO [Char]
forall a. a -> IO a
forall (f :: * -> *) a. Applicative f => a -> f a
pure [Char]
s
		let params :: [CommandParam]
params = DebootstrapConfig -> [CommandParam]
toParams DebootstrapConfig
config [CommandParam] -> [CommandParam] -> [CommandParam]
forall a. [a] -> [a] -> [a]
++
			[ [Char] -> CommandParam
Param ([Char] -> CommandParam) -> [Char] -> CommandParam
forall a b. (a -> b) -> a -> b
$ [Char]
"--arch=" [Char] -> ShowS
forall a. [a] -> [a] -> [a]
++ Architecture -> [Char]
architectureToDebianArchString Architecture
arch
			, [Char] -> CommandParam
Param [Char]
suite
			, [Char] -> CommandParam
Param [Char]
target
			] [CommandParam] -> [CommandParam] -> [CommandParam]
forall a. [a] -> [a] -> [a]
++ case DebootstrapConfig -> Maybe [Char]
debootstrapMirror DebootstrapConfig
config of
				Just [Char]
u -> [[Char] -> CommandParam
Param [Char]
u]
				Maybe [Char]
Nothing -> []
		[Char]
cmd <- [Char] -> Maybe [Char] -> [Char]
forall a. a -> Maybe a -> a
fromMaybe [Char]
"debootstrap" (Maybe [Char] -> [Char]) -> IO (Maybe [Char]) -> IO [Char]
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> IO (Maybe [Char])
programPath
		[([Char], [Char])]
de <- case DebootstrapConfig -> Maybe [Char]
debootstrapProxy DebootstrapConfig
config of
			Just [Char]
u -> [Char] -> [Char] -> [([Char], [Char])] -> [([Char], [Char])]
forall k v. Eq k => k -> v -> [(k, v)] -> [(k, v)]
addEntry [Char]
"http_proxy" [Char]
u ([([Char], [Char])] -> [([Char], [Char])])
-> IO [([Char], [Char])] -> IO [([Char], [Char])]
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> IO [([Char], [Char])]
standardPathEnv
			Maybe [Char]
Nothing -> IO [([Char], [Char])]
standardPathEnv
		IO Bool -> (IO Result, IO Result) -> IO Result
forall (m :: * -> *) a. Monad m => m Bool -> (m a, m a) -> m a
ifM ([Char] -> [CommandParam] -> Maybe [([Char], [Char])] -> IO Bool
boolSystemEnv [Char]
cmd [CommandParam]
params ([([Char], [Char])] -> Maybe [([Char], [Char])]
forall a. a -> Maybe a
Just [([Char], [Char])]
de))
			( Result -> IO Result
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Result
MadeChange
			, Result -> IO Result
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Result
FailedChange
			)

	-- A failed debootstrap run will leave a debootstrap directory;
	-- recover by deleting it and trying again.
	ispartial :: IO Bool
ispartial = IO Bool -> (IO Bool, IO Bool) -> IO Bool
forall (m :: * -> *) a. Monad m => m Bool -> (m a, m a) -> m a
ifM ([Char] -> IO Bool
doesDirectoryExist ([Char]
target [Char] -> ShowS
</> [Char]
"debootstrap"))
		( do
			[Char] -> IO ()
removeChroot [Char]
target
			Bool -> IO Bool
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Bool
True
		, Bool -> IO Bool
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Bool
False
		)
	
	-- May want to remove this after some appropriate length of time,
	-- as it's a workaround for chroots set up with too tight
	-- permissions.
	oldpermfix :: Property Linux
	oldpermfix :: Property Linux
oldpermfix = [Char] -> Propellor Result -> Property Linux
forall {k} (metatypes :: k).
SingI metatypes =>
[Char] -> Propellor Result -> Property (MetaTypes metatypes)
property ([Char]
"fixed old chroot file mode") (Propellor Result -> Property Linux)
-> Propellor Result -> Property Linux
forall a b. (a -> b) -> a -> b
$ do
		IO () -> Propellor ()
forall a. IO a -> Propellor a
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO () -> Propellor ()) -> IO () -> Propellor ()
forall a b. (a -> b) -> a -> b
$ [Char] -> (FileMode -> FileMode) -> IO ()
modifyFileMode [Char]
target ((FileMode -> FileMode) -> IO ())
-> (FileMode -> FileMode) -> IO ()
forall a b. (a -> b) -> a -> b
$
			[FileMode] -> FileMode -> FileMode
addModes [FileMode
otherReadMode, FileMode
otherExecuteMode]
		Result -> Propellor Result
forall a. a -> Propellor a
forall (m :: * -> *) a. Monad m => a -> m a
return Result
NoChange

extractSuite :: System -> Maybe String
extractSuite :: System -> Maybe [Char]
extractSuite (System (Debian DebianKernel
_ DebianSuite
s) Architecture
_) = [Char] -> Maybe [Char]
forall a. a -> Maybe a
Just ([Char] -> Maybe [Char]) -> [Char] -> Maybe [Char]
forall a b. (a -> b) -> a -> b
$ DebianSuite -> [Char]
Apt.showSuite DebianSuite
s
extractSuite (System (Buntish [Char]
r) Architecture
_) = [Char] -> Maybe [Char]
forall a. a -> Maybe a
Just [Char]
r
extractSuite (System (Distribution
ArchLinux) Architecture
_) = Maybe [Char]
forall a. Maybe a
Nothing
extractSuite (System (FreeBSD FreeBSDRelease
_) Architecture
_) = Maybe [Char]
forall a. Maybe a
Nothing

-- | Ensures debootstrap is installed.
--
-- When necessary, falls back to installing debootstrap from source.
-- Note that installation from source is done by downloading the tarball
-- from a Debian mirror, with no cryptographic verification.
installed :: RevertableProperty Linux Linux
installed :: RevertableProperty Linux Linux
installed = Property Linux
install Property Linux -> Property Linux -> RevertableProperty Linux Linux
forall setupmetatypes undometatypes.
Property setupmetatypes
-> Property undometatypes
-> RevertableProperty setupmetatypes undometatypes
<!> Property Linux
remove
  where
	install :: Property Linux
install = IO Bool -> Property Linux -> Property Linux
forall (p :: * -> *) i (m :: * -> *).
(Checkable p i, LiftPropellor m) =>
m Bool -> p i -> Property i
check (Maybe [Char] -> Bool
forall a. Maybe a -> Bool
isNothing (Maybe [Char] -> Bool) -> IO (Maybe [Char]) -> IO Bool
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> IO (Maybe [Char])
programPath) (Property Linux -> Property Linux)
-> Property Linux -> Property Linux
forall a b. (a -> b) -> a -> b
$
		(Property DebianLike
aptinstall Property DebianLike -> Property Linux -> Property Linux
forall {k} ka kb (c :: k) (a :: ka) (b :: kb).
(HasCallStack, SingKind 'KProxy, SingKind 'KProxy,
 DemoteRep 'KProxy ~ [MetaType], DemoteRep 'KProxy ~ [MetaType],
 SingI c) =>
Property (MetaTypes a)
-> Property (MetaTypes b) -> Property (MetaTypes c)
`pickOS` Property Linux
sourceInstall)
			Property Linux -> [Char] -> Property Linux
forall p. IsProp p => p -> [Char] -> p
`describe` [Char]
"debootstrap installed"

	remove :: Property Linux
remove = (Property DebianLike
aptremove Property DebianLike -> Property Linux -> Property Linux
forall {k} ka kb (c :: k) (a :: ka) (b :: kb).
(HasCallStack, SingKind 'KProxy, SingKind 'KProxy,
 DemoteRep 'KProxy ~ [MetaType], DemoteRep 'KProxy ~ [MetaType],
 SingI c) =>
Property (MetaTypes a)
-> Property (MetaTypes b) -> Property (MetaTypes c)
`pickOS` Property Linux
sourceRemove)
		Property Linux -> [Char] -> Property Linux
forall p. IsProp p => p -> [Char] -> p
`describe` [Char]
"debootstrap removed"

	aptinstall :: Property DebianLike
aptinstall = [[Char]] -> Property DebianLike
Apt.installed [[Char]
"debootstrap"]
	aptremove :: Property DebianLike
aptremove = [[Char]] -> Property DebianLike
Apt.removed [[Char]
"debootstrap"]

sourceInstall :: Property Linux
sourceInstall :: Property Linux
sourceInstall = Property Linux
go
	Property Linux
-> Property Linux -> CombinedType (Property Linux) (Property Linux)
forall x y. Combines x y => x -> y -> CombinedType x y
`requires` Property Linux
perlInstalled
	Property Linux
-> Property Linux -> CombinedType (Property Linux) (Property Linux)
forall x y. Combines x y => x -> y -> CombinedType x y
`requires` Property Linux
arInstalled
  where
	go :: Property Linux
	go :: Property Linux
go = [Char] -> Propellor Result -> Property Linux
forall {k} (metatypes :: k).
SingI metatypes =>
[Char] -> Propellor Result -> Property (MetaTypes metatypes)
property [Char]
"debootstrap installed from source" (IO Result -> Propellor Result
forall a. IO a -> Propellor a
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO IO Result
sourceInstall')

perlInstalled :: Property Linux
perlInstalled :: Property Linux
perlInstalled = IO Bool -> Property Linux -> Property Linux
forall (p :: * -> *) i (m :: * -> *).
(Checkable p i, LiftPropellor m) =>
m Bool -> p i -> Property i
check (Bool -> Bool
not (Bool -> Bool) -> IO Bool -> IO Bool
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> [Char] -> IO Bool
inPath [Char]
"perl") (Property Linux -> Property Linux)
-> Property Linux -> Property Linux
forall a b. (a -> b) -> a -> b
$ [Char] -> Propellor Result -> Property Linux
forall {k} (metatypes :: k).
SingI metatypes =>
[Char] -> Propellor Result -> Property (MetaTypes metatypes)
property [Char]
"perl installed" (Propellor Result -> Property Linux)
-> Propellor Result -> Property Linux
forall a b. (a -> b) -> a -> b
$
	IO Result -> Propellor Result
forall a. IO a -> Propellor a
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO Result -> Propellor Result) -> IO Result -> Propellor Result
forall a b. (a -> b) -> a -> b
$ Bool -> Result
forall t. ToResult t => t -> Result
toResult (Bool -> Result)
-> (Maybe (IO Bool) -> Bool) -> Maybe (IO Bool) -> Result
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Maybe (IO Bool) -> Bool
forall a. Maybe a -> Bool
isJust (Maybe (IO Bool) -> Result) -> IO (Maybe (IO Bool)) -> IO Result
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> (IO Bool -> IO Bool) -> [IO Bool] -> IO (Maybe (IO Bool))
forall (m :: * -> *) a.
Monad m =>
(a -> m Bool) -> [a] -> m (Maybe a)
firstM IO Bool -> IO Bool
forall a. a -> a
id
		[ [Char] -> IO Bool
yumInstall [Char]
"perl"
		]

arInstalled :: Property Linux
arInstalled :: Property Linux
arInstalled = IO Bool -> Property Linux -> Property Linux
forall (p :: * -> *) i (m :: * -> *).
(Checkable p i, LiftPropellor m) =>
m Bool -> p i -> Property i
check (Bool -> Bool
not (Bool -> Bool) -> IO Bool -> IO Bool
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> [Char] -> IO Bool
inPath [Char]
"ar") (Property Linux -> Property Linux)
-> Property Linux -> Property Linux
forall a b. (a -> b) -> a -> b
$ [Char] -> Propellor Result -> Property Linux
forall {k} (metatypes :: k).
SingI metatypes =>
[Char] -> Propellor Result -> Property (MetaTypes metatypes)
property [Char]
"ar installed" (Propellor Result -> Property Linux)
-> Propellor Result -> Property Linux
forall a b. (a -> b) -> a -> b
$
	IO Result -> Propellor Result
forall a. IO a -> Propellor a
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO Result -> Propellor Result) -> IO Result -> Propellor Result
forall a b. (a -> b) -> a -> b
$ Bool -> Result
forall t. ToResult t => t -> Result
toResult (Bool -> Result)
-> (Maybe (IO Bool) -> Bool) -> Maybe (IO Bool) -> Result
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Maybe (IO Bool) -> Bool
forall a. Maybe a -> Bool
isJust (Maybe (IO Bool) -> Result) -> IO (Maybe (IO Bool)) -> IO Result
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> (IO Bool -> IO Bool) -> [IO Bool] -> IO (Maybe (IO Bool))
forall (m :: * -> *) a.
Monad m =>
(a -> m Bool) -> [a] -> m (Maybe a)
firstM IO Bool -> IO Bool
forall a. a -> a
id
		[ [Char] -> IO Bool
yumInstall [Char]
"binutils"
		]

yumInstall :: String -> IO Bool
yumInstall :: [Char] -> IO Bool
yumInstall [Char]
p = [Char] -> [CommandParam] -> IO Bool
boolSystem [Char]
"yum" [[Char] -> CommandParam
Param [Char]
"-y", [Char] -> CommandParam
Param [Char]
"install", [Char] -> CommandParam
Param [Char]
p]

sourceInstall' :: IO Result
sourceInstall' :: IO Result
sourceInstall' = [Char] -> ([Char] -> IO Result) -> IO Result
forall (m :: * -> *) a.
(MonadMask m, MonadIO m) =>
[Char] -> ([Char] -> m a) -> m a
withTmpDir [Char]
"debootstrap" (([Char] -> IO Result) -> IO Result)
-> ([Char] -> IO Result) -> IO Result
forall a b. (a -> b) -> a -> b
$ \[Char]
tmpd -> do
	let indexfile :: [Char]
indexfile = [Char]
tmpd [Char] -> ShowS
</> [Char]
"index.html"
	IO Bool -> IO () -> IO ()
forall {m :: * -> *}. Monad m => m Bool -> m () -> m ()
unlessM ([Char] -> [Char] -> IO Bool
download [Char]
baseurl [Char]
indexfile) (IO () -> IO ()) -> IO () -> IO ()
forall a b. (a -> b) -> a -> b
$
		[Char] -> IO ()
forall (m :: * -> *) a. MonadIO m => [Char] -> m a
errorMessage ([Char] -> IO ()) -> [Char] -> IO ()
forall a b. (a -> b) -> a -> b
$ [Char]
"Failed to download " [Char] -> ShowS
forall a. [a] -> [a] -> [a]
++ [Char]
baseurl
	[[Char]]
urls <- ([Char] -> [Char] -> Ordering) -> [[Char]] -> [[Char]]
forall a. (a -> a -> Ordering) -> [a] -> [a]
sortBy (([Char] -> [Char] -> Ordering) -> [Char] -> [Char] -> Ordering
forall a b c. (a -> b -> c) -> b -> a -> c
flip [Char] -> [Char] -> Ordering
forall a. Ord a => a -> a -> Ordering
compare) -- highest version first
		([[Char]] -> [[Char]])
-> ([Char] -> [[Char]]) -> [Char] -> [[Char]]
forall b c a. (b -> c) -> (a -> b) -> a -> c
. ([Char] -> Bool) -> [[Char]] -> [[Char]]
forall a. (a -> Bool) -> [a] -> [a]
filter ([Char]
"debootstrap_" [Char] -> [Char] -> Bool
forall a. Eq a => [a] -> [a] -> Bool
`isInfixOf`)
		([[Char]] -> [[Char]])
-> ([Char] -> [[Char]]) -> [Char] -> [[Char]]
forall b c a. (b -> c) -> (a -> b) -> a -> c
. ([Char] -> Bool) -> [[Char]] -> [[Char]]
forall a. (a -> Bool) -> [a] -> [a]
filter ([Char]
".tar." [Char] -> [Char] -> Bool
forall a. Eq a => [a] -> [a] -> Bool
`isInfixOf`)
		([[Char]] -> [[Char]])
-> ([Char] -> [[Char]]) -> [Char] -> [[Char]]
forall b c a. (b -> c) -> (a -> b) -> a -> c
. [Char] -> [Char] -> [[Char]]
extractUrls [Char]
baseurl ([Char] -> [[Char]]) -> IO [Char] -> IO [[Char]]
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$>
		[Char] -> IO [Char]
readFileStrict [Char]
indexfile
	[Char] -> IO ()
nukeFile [Char]
indexfile

	[Char]
tarfile <- case [[Char]]
urls of
		([Char]
tarurl:[[Char]]
_) -> do
			let f :: [Char]
f = [Char]
tmpd [Char] -> ShowS
</> ShowS
takeFileName [Char]
tarurl
			IO Bool -> IO () -> IO ()
forall {m :: * -> *}. Monad m => m Bool -> m () -> m ()
unlessM ([Char] -> [Char] -> IO Bool
download [Char]
tarurl [Char]
f) (IO () -> IO ()) -> IO () -> IO ()
forall a b. (a -> b) -> a -> b
$
				[Char] -> IO ()
forall (m :: * -> *) a. MonadIO m => [Char] -> m a
errorMessage ([Char] -> IO ()) -> [Char] -> IO ()
forall a b. (a -> b) -> a -> b
$ [Char]
"Failed to download " [Char] -> ShowS
forall a. [a] -> [a] -> [a]
++ [Char]
tarurl
			[Char] -> IO [Char]
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return [Char]
f
		[[Char]]
_ -> [Char] -> IO [Char]
forall (m :: * -> *) a. MonadIO m => [Char] -> m a
errorMessage ([Char] -> IO [Char]) -> [Char] -> IO [Char]
forall a b. (a -> b) -> a -> b
$ [Char]
"Failed to find any debootstrap tarballs listed on " [Char] -> ShowS
forall a. [a] -> [a] -> [a]
++ [Char]
baseurl

	Bool -> [Char] -> IO ()
createDirectoryIfMissing Bool
True [Char]
localInstallDir
	IO [Char]
-> ([Char] -> IO ()) -> ([Char] -> IO Result) -> IO Result
forall (m :: * -> *) a c b.
(HasCallStack, MonadMask m) =>
m a -> (a -> m c) -> (a -> m b) -> m b
bracket IO [Char]
getWorkingDirectory [Char] -> IO ()
changeWorkingDirectory (([Char] -> IO Result) -> IO Result)
-> ([Char] -> IO Result) -> IO Result
forall a b. (a -> b) -> a -> b
$ \[Char]
_ -> do
		[Char] -> IO ()
changeWorkingDirectory [Char]
localInstallDir
		IO Bool -> IO () -> IO ()
forall {m :: * -> *}. Monad m => m Bool -> m () -> m ()
unlessM ([Char] -> [CommandParam] -> IO Bool
boolSystem [Char]
"tar" [[Char] -> CommandParam
Param [Char]
"xf", [Char] -> CommandParam
File [Char]
tarfile]) (IO () -> IO ()) -> IO () -> IO ()
forall a b. (a -> b) -> a -> b
$
			[Char] -> IO ()
forall (m :: * -> *) a. MonadIO m => [Char] -> m a
errorMessage [Char]
"Failed to extract debootstrap tar file"
		[Char] -> IO ()
nukeFile [Char]
tarfile
		[[Char]]
l <- [Char] -> IO [[Char]]
dirContents [Char]
"."
		case [[Char]]
l of
			([Char]
subdir:[]) -> do
				[Char] -> IO ()
changeWorkingDirectory [Char]
subdir
				[Char] -> IO ()
makeWrapperScript ([Char]
localInstallDir [Char] -> ShowS
</> [Char]
subdir)
				Result -> IO Result
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Result
MadeChange
			[[Char]]
_ -> [Char] -> IO Result
forall (m :: * -> *) a. MonadIO m => [Char] -> m a
errorMessage [Char]
"debootstrap tar file did not contain exactly one directory"

sourceRemove :: Property Linux
sourceRemove :: Property Linux
sourceRemove = [Char] -> Propellor Result -> Property Linux
forall {k} (metatypes :: k).
SingI metatypes =>
[Char] -> Propellor Result -> Property (MetaTypes metatypes)
property [Char]
"debootstrap not installed from source" (Propellor Result -> Property Linux)
-> Propellor Result -> Property Linux
forall a b. (a -> b) -> a -> b
$ IO Result -> Propellor Result
forall a. IO a -> Propellor a
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO Result -> Propellor Result) -> IO Result -> Propellor Result
forall a b. (a -> b) -> a -> b
$
	IO Bool -> (IO Result, IO Result) -> IO Result
forall (m :: * -> *) a. Monad m => m Bool -> (m a, m a) -> m a
ifM ([Char] -> IO Bool
doesDirectoryExist [Char]
sourceInstallDir)
		( do
			[Char] -> IO ()
removeDirectoryRecursive [Char]
sourceInstallDir
			Result -> IO Result
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Result
MadeChange
		, Result -> IO Result
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Result
NoChange
		)

sourceInstallDir :: FilePath
sourceInstallDir :: [Char]
sourceInstallDir = [Char]
"/usr/local/propellor/debootstrap"

wrapperScript :: FilePath
wrapperScript :: [Char]
wrapperScript = [Char]
sourceInstallDir [Char] -> ShowS
</> [Char]
"debootstrap.wrapper"

-- | Finds debootstrap in PATH, but fall back to looking for the
-- wrapper script that is installed, outside the PATH, when debootstrap
-- is installed from source.
programPath :: IO (Maybe FilePath)
programPath :: IO (Maybe [Char])
programPath = ([Char] -> IO (Maybe [Char])) -> [[Char]] -> IO (Maybe [Char])
forall (m :: * -> *) a b.
Monad m =>
(a -> m (Maybe b)) -> [a] -> m (Maybe b)
getM [Char] -> IO (Maybe [Char])
searchPath
	[ [Char]
"debootstrap"
	, [Char]
wrapperScript
	]

makeWrapperScript :: FilePath -> IO ()
makeWrapperScript :: [Char] -> IO ()
makeWrapperScript [Char]
dir = do
	Bool -> [Char] -> IO ()
createDirectoryIfMissing Bool
True (ShowS
takeDirectory [Char]
wrapperScript)
	[Char] -> [Char] -> IO ()
writeFile [Char]
wrapperScript ([Char] -> IO ()) -> [Char] -> IO ()
forall a b. (a -> b) -> a -> b
$ [[Char]] -> [Char]
unlines
		[ [Char]
"#!/bin/sh"
		, [Char]
"set -e"
		, [Char]
"DEBOOTSTRAP_DIR=" [Char] -> ShowS
forall a. [a] -> [a] -> [a]
++ [Char]
dir
		, [Char]
"export DEBOOTSTRAP_DIR"
		, [Char]
dir [Char] -> ShowS
</> [Char]
"debootstrap" [Char] -> ShowS
forall a. [a] -> [a] -> [a]
++ [Char]
" \"$@\""
		]
	[Char] -> (FileMode -> FileMode) -> IO ()
modifyFileMode [Char]
wrapperScript ([FileMode] -> FileMode -> FileMode
addModes ([FileMode] -> FileMode -> FileMode)
-> [FileMode] -> FileMode -> FileMode
forall a b. (a -> b) -> a -> b
$ [FileMode]
readModes [FileMode] -> [FileMode] -> [FileMode]
forall a. [a] -> [a] -> [a]
++ [FileMode]
executeModes)

localInstallDir :: FilePath
localInstallDir :: [Char]
localInstallDir = [Char]
"/usr/local/debootstrap"

-- This http server directory listing is relied on to be fairly sane,
-- which is one reason why it's using a specific server and not a
-- round-robin address.
baseurl :: Url
baseurl :: [Char]
baseurl = [Char]
"http://ftp.debian.org/debian/pool/main/d/debootstrap/"

download :: Url -> FilePath -> IO Bool
download :: [Char] -> [Char] -> IO Bool
download [Char]
url [Char]
dest = (IO Bool -> IO Bool) -> [IO Bool] -> IO Bool
forall (m :: * -> *) a. Monad m => (a -> m Bool) -> [a] -> m Bool
anyM IO Bool -> IO Bool
forall a. a -> a
id
	[ [Char] -> [CommandParam] -> IO Bool
boolSystem [Char]
"curl" [[Char] -> CommandParam
Param [Char]
"-o", [Char] -> CommandParam
File [Char]
dest, [Char] -> CommandParam
Param [Char]
url]
	, [Char] -> [CommandParam] -> IO Bool
boolSystem [Char]
"wget" [[Char] -> CommandParam
Param [Char]
"-O", [Char] -> CommandParam
File [Char]
dest, [Char] -> CommandParam
Param [Char]
url]
	]

-- Pretty hackish, but I don't want to pull in a whole html parser
-- or parsec dependency just for this.
--
-- To simplify parsing, lower case everything. This is ok because
-- the filenames are all lower-case anyway.
extractUrls :: Url -> String -> [Url]
extractUrls :: [Char] -> [Char] -> [[Char]]
extractUrls [Char]
base = [[Char]] -> [Char] -> [[Char]]
collect [] ([Char] -> [[Char]]) -> ShowS -> [Char] -> [[Char]]
forall b c a. (b -> c) -> (a -> b) -> a -> c
. (Char -> Char) -> ShowS
forall a b. (a -> b) -> [a] -> [b]
map Char -> Char
toLower
  where
	collect :: [[Char]] -> [Char] -> [[Char]]
collect [[Char]]
l [] = [[Char]]
l
	collect [[Char]]
l (Char
'h':Char
'r':Char
'e':Char
'f':Char
'=':[Char]
r) = case [Char]
r of
		(Char
'"':[Char]
r') -> [[Char]] -> [Char] -> [[Char]]
findend [[Char]]
l [Char]
r'
		[Char]
_ -> [[Char]] -> [Char] -> [[Char]]
findend [[Char]]
l [Char]
r
	collect [[Char]]
l (Char
_:[Char]
cs) = [[Char]] -> [Char] -> [[Char]]
collect [[Char]]
l [Char]
cs

	findend :: [[Char]] -> [Char] -> [[Char]]
findend [[Char]]
l [Char]
s =
		let ([Char]
u, [Char]
r) = (Char -> Bool) -> [Char] -> ([Char], [Char])
forall a. (a -> Bool) -> [a] -> ([a], [a])
break (Char -> Char -> Bool
forall a. Eq a => a -> a -> Bool
== Char
'"') [Char]
s
		    u' :: [Char]
u' = if [Char]
"http" [Char] -> [Char] -> Bool
forall a. Eq a => [a] -> [a] -> Bool
`isPrefixOf` [Char]
u
			then [Char]
u
			else [Char]
base [Char] -> ShowS
</> [Char]
u
		in [[Char]] -> [Char] -> [[Char]]
collect ([Char]
u'[Char] -> [[Char]] -> [[Char]]
forall a. a -> [a] -> [a]
:[[Char]]
l) [Char]
r