module IPv4Address
( ipv4address_from_octets,
+ ipv4address_tests,
IPv4Address(None),
- max_octet1,
- max_octet2,
- max_octet3,
- max_octet4,
- min_octet1,
- min_octet2,
- min_octet3,
- min_octet4,
+ max_address,
+ min_address,
most_sig_bit_different,
octet1,
octet2,
octet3,
octet4
-)
- where
+) where
+
+import Test.HUnit
+import Test.QuickCheck
-import qualified Bit as B
+import Maskable
import Maskbits
import Octet
oct4 = (octet4 addr)
+instance Arbitrary IPv4Address where
+ arbitrary = do
+ oct1 <- arbitrary :: Gen Octet
+ oct2 <- arbitrary :: Gen Octet
+ oct3 <- arbitrary :: Gen Octet
+ oct4 <- arbitrary :: Gen Octet
+ return (IPv4Address oct1 oct2 oct3 oct4)
+
+
+
+instance Maskable IPv4Address where
+ apply_mask _ Maskbits.None _ = IPv4Address.None
+ apply_mask addr mask bit
+ | mask == ThirtyTwo = addr
+ | mask == ThirtyOne = addr { octet4 = (apply_mask oct4 Seven bit) }
+ | mask == Thirty = addr { octet4 = (apply_mask oct4 Six bit) }
+ | mask == TwentyNine = addr { octet4 = (apply_mask oct4 Five bit) }
+ | mask == TwentyEight = addr { octet4 = (apply_mask oct4 Four bit) }
+ | mask == TwentySeven = addr { octet4 = (apply_mask oct4 Three bit) }
+ | mask == TwentySix = addr { octet4 = (apply_mask oct4 Two bit) }
+ | mask == TwentyFive = addr { octet4 = (apply_mask oct4 One bit) }
+ | mask == TwentyFour = addr { octet4 = (apply_mask oct4 Zero bit) }
+ | mask == TwentyThree = addr { octet3 = (apply_mask oct3 Seven bit),
+ octet4 = (apply_mask oct4 Zero bit) }
+ | mask == TwentyTwo = addr { octet3 = (apply_mask oct3 Six bit),
+ octet4 = (apply_mask oct4 Zero bit) }
+ | mask == TwentyOne = addr { octet3 = (apply_mask oct3 Five bit),
+ octet4 = (apply_mask oct4 Zero bit) }
+ | mask == Twenty = addr { octet3 = (apply_mask oct3 Four bit),
+ octet4 = (apply_mask oct4 Zero bit) }
+ | mask == Nineteen = addr { octet3 = (apply_mask oct3 Three bit),
+ octet4 = (apply_mask oct4 Zero bit) }
+ | mask == Eighteen = addr { octet3 = (apply_mask oct3 Two bit),
+ octet4 = (apply_mask oct4 Zero bit) }
+ | mask == Seventeen = addr { octet3 = (apply_mask oct3 One bit),
+ octet4 = (apply_mask oct4 Zero bit) }
+ | mask == Sixteen = addr { octet3 = (apply_mask oct3 Zero bit),
+ octet4 = (apply_mask oct4 Zero bit) }
+ | mask == Fifteen = addr { octet2 = (apply_mask oct2 Seven bit),
+ octet3 = (apply_mask oct3 Zero bit),
+ octet4 = (apply_mask oct4 Zero bit) }
+ | mask == Fourteen = addr { octet2 = (apply_mask oct2 Six bit),
+ octet3 = (apply_mask oct3 Zero bit),
+ octet4 = (apply_mask oct4 Zero bit)}
+ | mask == Thirteen = addr { octet2 = (apply_mask oct2 Five bit),
+ octet3 = (apply_mask oct3 Zero bit),
+ octet4 = (apply_mask oct4 Zero bit)}
+ | mask == Twelve = addr { octet2 = (apply_mask oct2 Four bit),
+ octet3 = (apply_mask oct3 Zero bit),
+ octet4 = (apply_mask oct4 Zero bit)}
+ | mask == Eleven = addr { octet2 = (apply_mask oct2 Three bit),
+ octet3 = (apply_mask oct3 Zero bit),
+ octet4 = (apply_mask oct4 Zero bit)}
+ | mask == Ten = addr { octet2 = (apply_mask oct2 Two bit),
+ octet3 = (apply_mask oct3 Zero bit),
+ octet4 = (apply_mask oct4 Zero bit)}
+ | mask == Nine = addr { octet2 = (apply_mask oct2 One bit),
+ octet3 = (apply_mask oct3 Zero bit),
+ octet4 = (apply_mask oct4 Zero bit)}
+ | mask == Eight = addr { octet2 = (apply_mask oct2 Zero bit),
+ octet3 = (apply_mask oct3 Zero bit),
+ octet4 = (apply_mask oct4 Zero bit)}
+ | mask == Seven = addr { octet1 = (apply_mask oct1 Seven bit),
+ octet2 = (apply_mask oct2 Zero bit),
+ octet3 = (apply_mask oct3 Zero bit),
+ octet4 = (apply_mask oct4 Zero bit)}
+ | mask == Six = addr { octet1 = (apply_mask oct1 Six bit),
+ octet2 = (apply_mask oct2 Zero bit),
+ octet3 = (apply_mask oct3 Zero bit),
+ octet4 = (apply_mask oct4 Zero bit)}
+ | mask == Five = addr { octet1 = (apply_mask oct1 Five bit),
+ octet2 = (apply_mask oct2 Zero bit),
+ octet3 = (apply_mask oct3 Zero bit),
+ octet4 = (apply_mask oct4 Zero bit)}
+ | mask == Four = addr { octet1 = (apply_mask oct1 Four bit),
+ octet2 = (apply_mask oct2 Zero bit),
+ octet3 = (apply_mask oct3 Zero bit),
+ octet4 = (apply_mask oct4 Zero bit)}
+ | mask == Three = addr { octet1 = (apply_mask oct1 Three bit),
+ octet2 = (apply_mask oct2 Zero bit),
+ octet3 = (apply_mask oct3 Zero bit),
+ octet4 = (apply_mask oct4 Zero bit)}
+ | mask == Two = addr { octet1 = (apply_mask oct1 Two bit),
+ octet2 = (apply_mask oct2 Zero bit),
+ octet3 = (apply_mask oct3 Zero bit),
+ octet4 = (apply_mask oct4 Zero bit)}
+ | mask == One = addr { octet1 = (apply_mask oct1 One bit),
+ octet2 = (apply_mask oct2 Zero bit),
+ octet3 = (apply_mask oct3 Zero bit),
+ octet4 = (apply_mask oct4 Zero bit)}
+ | mask == Zero = addr { octet1 = (apply_mask oct1 Zero bit),
+ octet2 = (apply_mask oct2 Zero bit),
+ octet3 = (apply_mask oct3 Zero bit),
+ octet4 = (apply_mask oct4 Zero bit)}
+ | otherwise = IPv4Address.None
+ where
+ oct1 = (octet1 addr)
+ oct2 = (octet2 addr)
+ oct3 = (octet3 addr)
+ oct4 = (octet4 addr)
+
+
-- We don't export our constructor so this function is the only
-- way to construct an address from octets. As a result, we can
-- return IPv4Address.None in response to being passed one of more
| otherwise = IPv4Address oct1 oct2 oct3 oct4
-min_address :: IPv4Address -> Maskbits -> IPv4Address
-min_address IPv4Address.None _ = IPv4Address.None
-min_address _ Maskbits.None = IPv4Address.None
-min_address addr mask
- | mask == ThirtyTwo = IPv4Address oct1 oct2 oct3 oct4
- | mask == ThirtyOne = IPv4Address oct1 oct2 oct3 (Octet a25 a26 a27 a28 a29 a30 a31 B.Zero)
- | mask == Thirty = IPv4Address oct1 oct2 oct3 (Octet a25 a26 a27 a28 a29 a30 B.Zero B.Zero)
- | mask == TwentyNine = IPv4Address oct1 oct2 oct3 (Octet a25 a26 a27 a28 a29 B.Zero B.Zero B.Zero)
- | mask == TwentyEight = IPv4Address oct1 oct2 oct3 (Octet a25 a26 a27 a28 B.Zero B.Zero B.Zero B.Zero)
- | mask == TwentySeven = IPv4Address oct1 oct2 oct3 (Octet a25 a26 a27 B.Zero B.Zero B.Zero B.Zero B.Zero)
- | mask == TwentySix = IPv4Address oct1 oct2 oct3 (Octet a25 a26 B.Zero B.Zero B.Zero B.Zero B.Zero B.Zero)
- | mask == TwentyFive = IPv4Address oct1 oct2 oct3 (Octet a25 B.Zero B.Zero B.Zero B.Zero B.Zero B.Zero B.Zero)
- | mask == TwentyFour = IPv4Address oct1 oct2 oct3 (min_octet)
- | mask == TwentyThree = IPv4Address oct1 oct2 (Octet a17 a18 a19 a20 a21 a22 a23 B.Zero) (min_octet)
- | mask == TwentyTwo = IPv4Address oct1 oct2 (Octet a17 a18 a19 a20 a21 a22 B.Zero B.Zero) (min_octet)
- | mask == TwentyOne = IPv4Address oct1 oct2 (Octet a17 a18 a19 a20 a21 B.Zero B.Zero B.Zero) (min_octet)
- | mask == Twenty = IPv4Address oct1 oct2 (Octet a17 a18 a19 a20 B.Zero B.Zero B.Zero B.Zero) (min_octet)
- | mask == Nineteen = IPv4Address oct1 oct2 (Octet a17 a18 a19 B.Zero B.Zero B.Zero B.Zero B.Zero) (min_octet)
- | mask == Eighteen = IPv4Address oct1 oct2 (Octet a17 a18 B.Zero B.Zero B.Zero B.Zero B.Zero B.Zero) (min_octet)
- | mask == Seventeen = IPv4Address oct1 oct2 (Octet a17 B.Zero B.Zero B.Zero B.Zero B.Zero B.Zero B.Zero) (min_octet)
- | mask == Sixteen = IPv4Address oct1 oct2 (min_octet) (min_octet)
- | mask == Fifteen = IPv4Address oct1 (Octet a9 a10 a11 a12 a13 a14 a15 B.Zero) (min_octet) (min_octet)
- | mask == Fourteen = IPv4Address oct1 (Octet a9 a10 a11 a12 a13 a14 B.Zero B.Zero) (min_octet) (min_octet)
- | mask == Thirteen = IPv4Address oct1 (Octet a9 a10 a11 a12 a13 B.Zero B.Zero B.Zero) (min_octet) (min_octet)
- | mask == Twelve = IPv4Address oct1 (Octet a9 a10 a11 a12 B.Zero B.Zero B.Zero B.Zero) (min_octet) (min_octet)
- | mask == Eleven = IPv4Address oct1 (Octet a9 a10 a11 B.Zero B.Zero B.Zero B.Zero B.Zero) (min_octet) (min_octet)
- | mask == Ten = IPv4Address oct1 (Octet a9 a10 B.Zero B.Zero B.Zero B.Zero B.Zero B.Zero) (min_octet) (min_octet)
- | mask == Nine = IPv4Address oct1 (Octet a9 B.Zero B.Zero B.Zero B.Zero B.Zero B.Zero B.Zero) (min_octet) (min_octet)
- | mask == Eight = IPv4Address oct1 (min_octet) (min_octet) (min_octet)
- | mask == Seven = IPv4Address (Octet a1 a2 a3 a4 a5 a6 a7 B.Zero) (min_octet) (min_octet) (min_octet)
- | mask == Six = IPv4Address (Octet a1 a2 a3 a4 a5 a6 B.Zero B.Zero) (min_octet) (min_octet) (min_octet)
- | mask == Five = IPv4Address (Octet a1 a2 a3 a4 a5 B.Zero B.Zero B.Zero) (min_octet) (min_octet) (min_octet)
- | mask == Four = IPv4Address (Octet a1 a2 a3 a4 B.Zero B.Zero B.Zero B.Zero) (min_octet) (min_octet) (min_octet)
- | mask == Three = IPv4Address (Octet a1 a2 a3 B.Zero B.Zero B.Zero B.Zero B.Zero) (min_octet) (min_octet) (min_octet)
- | mask == Two = IPv4Address (Octet a1 a2 B.Zero B.Zero B.Zero B.Zero B.Zero B.Zero) (min_octet) (min_octet) (min_octet)
- | mask == One = IPv4Address (Octet a1 B.Zero B.Zero B.Zero B.Zero B.Zero B.Zero B.Zero) (min_octet) (min_octet) (min_octet)
- | mask == Zero = IPv4Address (min_octet) (min_octet) (min_octet) (min_octet)
- | otherwise = addr
- where
- a1 = (b1 oct1)
- a2 = (b2 oct1)
- a3 = (b3 oct1)
- a4 = (b4 oct1)
- a5 = (b5 oct1)
- a6 = (b6 oct1)
- a7 = (b7 oct1)
- a9 = (b1 oct2)
- a10 = (b2 oct2)
- a11 = (b3 oct2)
- a12 = (b4 oct2)
- a13 = (b5 oct2)
- a14 = (b6 oct2)
- a15 = (b7 oct2)
- a17 = (b1 oct3)
- a18 = (b2 oct3)
- a19 = (b3 oct3)
- a20 = (b4 oct3)
- a21 = (b5 oct3)
- a22 = (b6 oct3)
- a23 = (b7 oct3)
- a25 = (b1 oct4)
- a26 = (b2 oct4)
- a27 = (b3 oct4)
- a28 = (b4 oct4)
- a29 = (b5 oct4)
- a30 = (b6 oct4)
- a31 = (b7 oct4)
- oct1 = (octet1 addr)
- oct2 = (octet2 addr)
- oct3 = (octet3 addr)
- oct4 = (octet4 addr)
-
-
-
-max_address :: IPv4Address -> Maskbits -> IPv4Address
-max_address IPv4Address.None _ = IPv4Address.None
-max_address _ Maskbits.None = IPv4Address.None
-max_address addr mask
- | mask == ThirtyTwo = IPv4Address oct1 oct2 oct3 oct4
- | mask == ThirtyOne = IPv4Address oct1 oct2 oct3 (Octet a25 a26 a27 a28 a29 a30 a31 B.One)
- | mask == Thirty = IPv4Address oct1 oct2 oct3 (Octet a25 a26 a27 a28 a29 a30 B.One B.One)
- | mask == TwentyNine = IPv4Address oct1 oct2 oct3 (Octet a25 a26 a27 a28 a29 B.One B.One B.One)
- | mask == TwentyEight = IPv4Address oct1 oct2 oct3 (Octet a25 a26 a27 a28 B.One B.One B.One B.One)
- | mask == TwentySeven = IPv4Address oct1 oct2 oct3 (Octet a25 a26 a27 B.One B.One B.One B.One B.One)
- | mask == TwentySix = IPv4Address oct1 oct2 oct3 (Octet a25 a26 B.One B.One B.One B.One B.One B.One)
- | mask == TwentyFive = IPv4Address oct1 oct2 oct3 (Octet a25 B.One B.One B.One B.One B.One B.One B.One)
- | mask == TwentyFour = IPv4Address oct1 oct2 oct3 (max_octet)
- | mask == TwentyThree = IPv4Address oct1 oct2 (Octet a17 a18 a19 a20 a21 a22 a23 B.One) (max_octet)
- | mask == TwentyTwo = IPv4Address oct1 oct2 (Octet a17 a18 a19 a20 a21 a22 B.One B.One) (max_octet)
- | mask == TwentyOne = IPv4Address oct1 oct2 (Octet a17 a18 a19 a20 a21 B.One B.One B.One) (max_octet)
- | mask == Twenty = IPv4Address oct1 oct2 (Octet a17 a18 a19 a20 B.One B.One B.One B.One) (max_octet)
- | mask == Nineteen = IPv4Address oct1 oct2 (Octet a17 a18 a19 B.One B.One B.One B.One B.One) (max_octet)
- | mask == Eighteen = IPv4Address oct1 oct2 (Octet a17 a18 B.One B.One B.One B.One B.One B.One) (max_octet)
- | mask == Seventeen = IPv4Address oct1 oct2 (Octet a17 B.One B.One B.One B.One B.One B.One B.One) (max_octet)
- | mask == Sixteen = IPv4Address oct1 oct2 (max_octet) (max_octet)
- | mask == Fifteen = IPv4Address oct1 (Octet a9 a10 a11 a12 a13 a14 a15 B.One) (max_octet) (max_octet)
- | mask == Fourteen = IPv4Address oct1 (Octet a9 a10 a11 a12 a13 a14 B.One B.One) (max_octet) (max_octet)
- | mask == Thirteen = IPv4Address oct1 (Octet a9 a10 a11 a12 a13 B.One B.One B.One) (max_octet) (max_octet)
- | mask == Twelve = IPv4Address oct1 (Octet a9 a10 a11 a12 B.One B.One B.One B.One) (max_octet) (max_octet)
- | mask == Eleven = IPv4Address oct1 (Octet a9 a10 a11 B.One B.One B.One B.One B.One) (max_octet) (max_octet)
- | mask == Ten = IPv4Address oct1 (Octet a9 a10 B.One B.One B.One B.One B.One B.One) (max_octet) (max_octet)
- | mask == Nine = IPv4Address oct1 (Octet a9 B.One B.One B.One B.One B.One B.One B.One) (max_octet) (max_octet)
- | mask == Eight = IPv4Address oct1 (max_octet) (max_octet) (max_octet)
- | mask == Seven = IPv4Address (Octet a1 a2 a3 a4 a5 a6 a7 B.One) (max_octet) (max_octet) (max_octet)
- | mask == Six = IPv4Address (Octet a1 a2 a3 a4 a5 a6 B.One B.One) (max_octet) (max_octet) (max_octet)
- | mask == Five = IPv4Address (Octet a1 a2 a3 a4 a5 B.One B.One B.One) (max_octet) (max_octet) (max_octet)
- | mask == Four = IPv4Address (Octet a1 a2 a3 a4 B.One B.One B.One B.One) (max_octet) (max_octet) (max_octet)
- | mask == Three = IPv4Address (Octet a1 a2 a3 B.One B.One B.One B.One B.One) (max_octet) (max_octet) (max_octet)
- | mask == Two = IPv4Address (Octet a1 a2 B.One B.One B.One B.One B.One B.One) (max_octet) (max_octet) (max_octet)
- | mask == One = IPv4Address (Octet a1 B.One B.One B.One B.One B.One B.One B.One) (max_octet) (max_octet) (max_octet)
- | mask == Zero = IPv4Address (max_octet) (max_octet) (max_octet) (max_octet)
- | otherwise = addr
- where
- a1 = (b1 oct1)
- a2 = (b2 oct1)
- a3 = (b3 oct1)
- a4 = (b4 oct1)
- a5 = (b5 oct1)
- a6 = (b6 oct1)
- a7 = (b7 oct1)
- a9 = (b1 oct2)
- a10 = (b2 oct2)
- a11 = (b3 oct2)
- a12 = (b4 oct2)
- a13 = (b5 oct2)
- a14 = (b6 oct2)
- a15 = (b7 oct2)
- a17 = (b1 oct3)
- a18 = (b2 oct3)
- a19 = (b3 oct3)
- a20 = (b4 oct3)
- a21 = (b5 oct3)
- a22 = (b6 oct3)
- a23 = (b7 oct3)
- a25 = (b1 oct4)
- a26 = (b2 oct4)
- a27 = (b3 oct4)
- a28 = (b4 oct4)
- a29 = (b5 oct4)
- a30 = (b6 oct4)
- a31 = (b7 oct4)
- oct1 = (octet1 addr)
- oct2 = (octet2 addr)
- oct3 = (octet3 addr)
- oct4 = (octet4 addr)
-
+-- The minimum possible IPv4 address, 0.0.0.0.
+min_address :: IPv4Address
+min_address = IPv4Address min_octet min_octet min_octet min_octet
-min_octet1 :: IPv4Address -> Maskbits -> Octet
-min_octet1 addr mask = octet1 (min_address addr mask)
-
-min_octet2 :: IPv4Address -> Maskbits -> Octet
-min_octet2 addr mask = octet2 (min_address addr mask)
-
-min_octet3 :: IPv4Address -> Maskbits -> Octet
-min_octet3 addr mask = octet3 (min_address addr mask)
-
-min_octet4 :: IPv4Address -> Maskbits -> Octet
-min_octet4 addr mask = octet4 (min_address addr mask)
-
-max_octet1 :: IPv4Address -> Maskbits -> Octet
-max_octet1 addr mask = octet1 (max_address addr mask)
-
-max_octet2 :: IPv4Address -> Maskbits -> Octet
-max_octet2 addr mask = octet2 (max_address addr mask)
-
-max_octet3 :: IPv4Address -> Maskbits -> Octet
-max_octet3 addr mask = octet3 (max_address addr mask)
-
-max_octet4 :: IPv4Address -> Maskbits -> Octet
-max_octet4 addr mask = octet4 (max_address addr mask)
+-- The maximum possible IPv4 address, 255.255.255.255.
+max_address :: IPv4Address
+max_address = IPv4Address max_octet max_octet max_octet max_octet
-- Given two addresses, find the number of the most significant bit
oct2b = (octet2 addr2)
oct3b = (octet3 addr2)
oct4b = (octet4 addr2)
+
+
+
+-- HUnit Tests
+mk_testaddr :: Int -> Int -> Int -> Int -> IPv4Address
+mk_testaddr a b c d =
+ IPv4Address oct1 oct2 oct3 oct4
+ where
+ oct1 = octet_from_int a
+ oct2 = octet_from_int b
+ oct3 = octet_from_int c
+ oct4 = octet_from_int d
+
+
+test_most_sig_bit_different1 :: Test
+test_most_sig_bit_different1 =
+ TestCase $ assertEqual "10.1.1.0 and 10.1.0.0 differ in bit 24" TwentyFour (most_sig_bit_different (mk_testaddr 10 1 1 0) (mk_testaddr 10 1 0 0))
+
+
+test_most_sig_bit_different2 :: Test
+test_most_sig_bit_different2 =
+ TestCase $ assertEqual "10.1.2.0 and 10.1.1.0 differ in bit 23" TwentyThree (most_sig_bit_different (mk_testaddr 10 1 2 0) (mk_testaddr 10 1 1 0))
+
+
+ipv4address_tests :: [Test]
+ipv4address_tests = [ test_most_sig_bit_different1,
+ test_most_sig_bit_different2 ]
projects / hath.git / blobdiff