iproute-1.7.12: IP Routing Table

Safe Haskell | None
Language | Haskell2010

Data.IP.RouteTable

Contents

- Documentation
  - Routable class
  - Type for IP routing table
  - Functions to manipulate an IP routing table

Description

IP routing table is a tree of `IPRange` to search one of them on the longest match base. It is a kind of TRIE with one way branching removed. Both IPv4 and IPv6 are supported.

For more information, see: http://www.mew.org/~kazu/proj/iproute/

Synopsis

- class Addr a => Routable a where
  - intToTBit :: Int -> a
  - isZero :: a -> a -> Bool
- data IPRTable k a
- empty :: Routable k => IPRTable k a
- insert :: Routable k => AddrRange k -> a -> IPRTable k a -> IPRTable k a
- delete :: Routable k => AddrRange k -> IPRTable k a -> IPRTable k a
- lookup :: Routable k => AddrRange k -> IPRTable k a -> Maybe a
- lookupKeyValue :: Routable k => AddrRange k -> IPRTable k a -> Maybe (AddrRange k, a)
- lookupAll :: Routable k => AddrRange k -> IPRTable k a -> [(AddrRange k, a)]
- findMatch :: Alternative m => Routable k => AddrRange k -> IPRTable k a -> m (AddrRange k, a)
- fromList :: Routable k => [(AddrRange k, a)] -> IPRTable k a
- toList :: Routable k => IPRTable k a -> [(AddrRange k, a)]
- foldlWithKey :: (b -> AddrRange k -> a -> b) -> b -> IPRTable k a -> b
- foldrWithKey :: (AddrRange k -> a -> b -> b) -> b -> IPRTable k a -> b

# Documentation

## Routable class

class Addr a => Routable a where #

A class to contain IPv4 and IPv6.

Methods

intToTBit :: Int -> a #

The `intToTBit` function takes `Int` and returns an `Routable` address whose only n-th bit is set.

isZero :: a -> a -> Bool #

The `isZero` function takes an `Routable` address and an test bit `Routable` address and returns `True` is the bit is unset, otherwise returns `False`.

#### Instances

Instances details

Routable IPv6 # |
Instance details Defined in Data.IP.RouteTable.Internal Methods intToTBit :: Int -> IPv6 # isZero :: IPv6 -> IPv6 -> Bool #
Routable IPv4 # |
Instance details Defined in Data.IP.RouteTable.Internal Methods intToTBit :: Int -> IPv4 # isZero :: IPv4 -> IPv4 -> Bool #

## Type for IP routing table

data IPRTable k a #

The Tree structure for IP routing table based on TRIE with one way branching removed. This is an abstract data type, so you cannot touch its inside. Please use `insert` or `lookup`, instead.

#### Instances

Instances details

Functor (IPRTable k) # |
Instance details Defined in Data.IP.RouteTable.Internal Methods fmap :: (a -> b) -> IPRTable k a -> IPRTable k b # (<$) :: a -> IPRTable k b -> IPRTable k a #
Foldable (IPRTable k) # |
Instance details Defined in Data.IP.RouteTable.Internal Methods fold :: Monoid m => IPRTable k m -> m # foldMap :: Monoid m => (a -> m) -> IPRTable k a -> m # foldMap' :: Monoid m => (a -> m) -> IPRTable k a -> m # foldr :: (a -> b -> b) -> b -> IPRTable k a -> b # foldr' :: (a -> b -> b) -> b -> IPRTable k a -> b # foldl :: (b -> a -> b) -> b -> IPRTable k a -> b # foldl' :: (b -> a -> b) -> b -> IPRTable k a -> b # foldr1 :: (a -> a -> a) -> IPRTable k a -> a # foldl1 :: (a -> a -> a) -> IPRTable k a -> a # toList :: IPRTable k a -> [a] # null :: IPRTable k a -> Bool # length :: IPRTable k a -> Int # elem :: Eq a => a -> IPRTable k a -> Bool # maximum :: Ord a => IPRTable k a -> a # minimum :: Ord a => IPRTable k a -> a # sum :: Num a => IPRTable k a -> a # product :: Num a => IPRTable k a -> a #
Traversable (IPRTable k) # |
Instance details Defined in Data.IP.RouteTable.Internal Methods traverse :: Applicative f => (a -> f b) -> IPRTable k a -> f (IPRTable k b) # sequenceA :: Applicative f => IPRTable k (f a) -> f (IPRTable k a) # mapM :: Monad m => (a -> m b) -> IPRTable k a -> m (IPRTable k b) # sequence :: Monad m => IPRTable k (m a) -> m (IPRTable k a) #
Generic1 (IPRTable k :: Type -> Type) # |
Instance details Defined in Data.IP.RouteTable.Internal Associated Types type Rep1 (IPRTable k) :: k -> Type # Methods from1 :: forall (a :: k0). IPRTable k a -> Rep1 (IPRTable k) a # to1 :: forall (a :: k0). Rep1 (IPRTable k) a -> IPRTable k a #
(Eq k, Eq a) => Eq (IPRTable k a) # |
Instance details Defined in Data.IP.RouteTable.Internal Methods (==) :: IPRTable k a -> IPRTable k a -> Bool # (/=) :: IPRTable k a -> IPRTable k a -> Bool #
(Show k, Show a) => Show (IPRTable k a) # |
Instance details Defined in Data.IP.RouteTable.Internal Methods showsPrec :: Int -> IPRTable k a -> ShowS # show :: IPRTable k a -> String # showList :: [IPRTable k a] -> ShowS #
Generic (IPRTable k a) # |
Instance details Defined in Data.IP.RouteTable.Internal Associated Types type Rep (IPRTable k a) :: Type -> Type # Methods from :: IPRTable k a -> Rep (IPRTable k a) x # to :: Rep (IPRTable k a) x -> IPRTable k a #
Routable k => Semigroup (IPRTable k a) # | Note that Semigroup and Monoid instances are right-biased. That is, if both arguments have the same key, the value from the right argument will be used. Since: 1.7.5
Instance details Defined in Data.IP.RouteTable.Internal Methods (<>) :: IPRTable k a -> IPRTable k a -> IPRTable k a # sconcat :: NonEmpty (IPRTable k a) -> IPRTable k a # stimes :: Integral b => b -> IPRTable k a -> IPRTable k a #
Routable k => Monoid (IPRTable k a) # | Since: 1.7.5
Instance details Defined in Data.IP.RouteTable.Internal Methods mempty :: IPRTable k a # mappend :: IPRTable k a -> IPRTable k a -> IPRTable k a # mconcat :: [IPRTable k a] -> IPRTable k a #
type Rep1 (IPRTable k :: Type -> Type) # |
Instance details Defined in Data.IP.RouteTable.Internal type Rep1 (IPRTable k :: Type -> Type) = D1 ('MetaData "IPRTable" "Data.IP.RouteTable.Internal" "iproute-1.7.12-29DZlxGDaaCHFezlDaCbal" 'False) (C1 ('MetaCons "Nil" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "Node" 'PrefixI 'False) ((S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (AddrRange k)) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 k)) :*: (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec1 Maybe) :*: (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec1 (IPRTable k)) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec1 (IPRTable k))))))
type Rep (IPRTable k a) # |
Instance details Defined in Data.IP.RouteTable.Internal type Rep (IPRTable k a) = D1 ('MetaData "IPRTable" "Data.IP.RouteTable.Internal" "iproute-1.7.12-29DZlxGDaaCHFezlDaCbal" 'False) (C1 ('MetaCons "Nil" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "Node" 'PrefixI 'False) ((S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (AddrRange k)) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 k)) :*: (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (Maybe a)) :*: (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (IPRTable k a)) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (IPRTable k a))))))

## Functions to manipulate an IP routing table

empty :: Routable k => IPRTable k a #

The `empty` function returns an empty IP routing table.

    >>> (empty :: IPRTable IPv4 ()) == fromList []
    True

insert :: Routable k => AddrRange k -> a -> IPRTable k a -> IPRTable k a #

The `insert` function inserts a value with a key of `AddrRange` to `IPRTable` and returns a new `IPRTable`.

    >>> (insert ("127.0.0.1" :: AddrRange IPv4) () empty) == fromList [("127.0.0.1",())]
    True

delete :: Routable k => AddrRange k -> IPRTable k a -> IPRTable k a #

The `delete` function deletes a value by a key of `AddrRange` from `IPRTable` and returns a new `IPRTable`.

    >>> delete "127.0.0.1" (insert "127.0.0.1" () empty) == (empty :: IPRTable IPv4 ())
    True

lookup :: Routable k => AddrRange k -> IPRTable k a -> Maybe a #

The `lookup` function looks up `IPRTable` with a key of `AddrRange`. If a routing information in `IPRTable` matches the key, its value is returned.

    >>> let v4 = ["133.4.0.0/16","133.5.0.0/16","133.5.16.0/24","133.5.23.0/24"] :: [AddrRange IPv4]
    >>> let rt = fromList $ zip v4 v4
    >>> lookup "127.0.0.1" rt
    Nothing
    >>> lookup "133.3.0.1" rt
    Nothing
    >>> lookup "133.4.0.0" rt
    Just 133.4.0.0/16
    >>> lookup "133.4.0.1" rt
    Just 133.4.0.0/16
    >>> lookup "133.5.16.0" rt
    Just 133.5.16.0/24
    >>> lookup "133.5.16.1" rt
    Just 133.5.16.0/24

lookupKeyValue :: Routable k => AddrRange k -> IPRTable k a -> Maybe (AddrRange k, a) #

The `lookupKeyValue` function looks up `IPRTable` with a key of `AddrRange`. If a routing information in `IPRTable` matches the key, both key and value are returned.

    >>> :set -XOverloadedStrings
    >>> let rt = fromList ([("192.168.0.0/24", 1), ("10.10.0.0/16", 2)] :: [(AddrRange IPv4, Int)])
    >>> lookupKeyValue "127.0.0.1" rt
    Nothing
    >>> lookupKeyValue "192.168.0.1" rt
    Just (192.168.0.0/24,1)
    >>> lookupKeyValue "10.10.0.1" rt
    Just (10.10.0.0/16,2)

lookupAll :: Routable k => AddrRange k -> IPRTable k a -> [(AddrRange k, a)] #

`lookupAll` is a version of `lookup` that returns all entries matching the given key, not just the longest match.

    >>> :set -XOverloadedStrings
    >>> let rt = fromList ([("192.168.0.0/24", 1), ("10.10.0.0/16", 2), ("10.0.0.0/8", 3)] :: [(AddrRange IPv4, Int)])
    >>> lookupAll "127.0.0.1" rt
    []
    >>> lookupAll "192.168.0.1" rt
    [(192.168.0.0/24,1)]
    >>> lookupAll "10.10.0.1" rt
    [(10.10.0.0/16,2),(10.0.0.0/8,3)]

findMatch :: Alternative m => Routable k => AddrRange k -> IPRTable k a -> m (AddrRange k, a) #

The `findMatch` function looks up `IPRTable` with a key of `AddrRange`. If the key matches routing informations in `IPRTable`, they are returned.

    >>> let v4 = ["133.4.0.0/16","133.5.0.0/16","133.5.16.0/24","133.5.23.0/24"] :: [AddrRange IPv4]
    >>> let rt = fromList $ zip v4 $ repeat ()
    >>> findMatch "133.4.0.0/15" rt :: [(AddrRange IPv4,())]
    [(133.4.0.0/16,()),(133.5.0.0/16,()),(133.5.16.0/24,()),(133.5.23.0/24,())]

fromList :: Routable k => [(AddrRange k, a)] -> IPRTable k a #

The `fromList` function creates a new IP routing table from a list of a pair of `IPrange` and value.

toList :: Routable k => IPRTable k a -> [(AddrRange k, a)] #

The `toList` function creates a list of a pair of `AddrRange` and value from an IP routing table.

foldlWithKey :: (b -> AddrRange k -> a -> b) -> b -> IPRTable k a -> b #

O(n). Fold the keys and values in the IPRTable using the given left-associative binary operator. This function is equivalent to Data.Map.foldlWithKey with necessary to IPRTable changes. Since: 1.7.5

foldrWithKey :: (AddrRange k -> a -> b -> b) -> b -> IPRTable k a -> b #

O(n). Fold the keys and values in the IPRTable using the given right-associative binary operator. This function is equivalent to Data.Map.foldrWithKey with necessary to IPRTable changes. Since: 1.7.5