IpMask, IpNet and tests initial commit.
This commit is contained in:
cheatfate
parent
44d0cc2dea
commit
9ddc47fa56
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@ -0,0 +1,588 @@
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import endians, strutils
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import chronos
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type
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IpMask* = object
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case family*: AddressFamily
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of AddressFamily.None, AddressFamily.Unix:
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discard
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of AddressFamily.IPv4:
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mask4*: uint32
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of AddressFamily.IPv6:
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mask6*: array[2, uint64]
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IpNet* = object
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host*: TransportAddress
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mask*: IpMask
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proc toNetworkOrder(mask: IpMask): IpMask {.inline.} =
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## Converts ``mask`` from host order (which can be big/little-endian) to
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## network order (which is big-endian) representation.
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result = IpMask(family: mask.family)
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if mask.family == AddressFamily.IPv4:
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bigEndian32(cast[pointer](addr result.mask4),
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cast[pointer](unsafeAddr mask.mask4))
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elif mask.family == AddressFamily.IPv6:
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bigEndian64(cast[pointer](addr result.mask6[0]),
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cast[pointer](unsafeAddr mask.mask6[0]))
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bigEndian64(cast[pointer](addr result.mask6[1]),
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cast[pointer](unsafeAddr mask.mask6[1]))
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proc toHostOrder(mask: IpMask): IpMask {.inline.} =
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## Converts ``mask`` from network order (which is big-endian) back to
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## host representation (which can be big/little-endian).
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when system.cpuEndian == bigEndian:
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result = mask
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else:
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result = IpMask(family: mask.family)
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if mask.family == AddressFamily.IPv4:
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swapEndian32(cast[pointer](addr result.mask4),
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cast[pointer](unsafeAddr mask.mask4))
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elif mask.family == AddressFamily.IPv6:
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swapEndian64(cast[pointer](addr result.mask6[0]),
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cast[pointer](unsafeAddr mask.mask6[0]))
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swapEndian64(cast[pointer](addr result.mask6[1]),
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cast[pointer](unsafeAddr mask.mask6[1]))
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proc init*(t: typedesc[IpMask], family: AddressFamily, prefix: int): IpMask =
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## Initialize mask of IP family ``family`` from prefix length ``prefix``.
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##
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## For IPv4 mask, if ``prefix`` is ``0`` or more then ``32`` it will be set
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## to ``32``.
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##
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## For IPv6 mask, if ``prefix`` is ``0`` or more then ``128`` it will be set
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## to ``128``.
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if family == AddressFamily.IPv4:
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result = IpMask(family: AddressFamily.IPv4)
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result.mask4 = 0xFFFF_FFFF'u32
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if prefix > 0 and prefix < 32:
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result.mask4 = 0xFFFF_FFFF'u32
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result.mask4 = cast[uint32](result.mask4 shl (32 - prefix))
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elif family == AddressFamily.IPv6:
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result = IpMask(family: AddressFamily.IPv6)
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if prefix >= 128 or prefix <= 0:
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result.mask6[0] = 0xFFFF_FFFF_FFFF_FFFF'u64
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result.mask6[1] = 0xFFFF_FFFF_FFFF_FFFF'u64
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else:
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result.mask6[0] = 0xFFFF_FFFF_FFFF_FFFF'u64
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if prefix > 64:
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result.mask6[1] = 0xFFFF_FFFF_FFFF_FFFF'u64
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result.mask6[1] = result.mask6[1] shl (128 - prefix)
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elif prefix == 64:
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result.mask6[1] = 0x00'u64
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else:
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result.mask6[0] = result.mask6[0] shl (64 - prefix)
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result.mask6[1] = 0x00'u64
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result = result.toNetworkOrder()
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proc init*(t: typedesc[IpMask], netmask: TransportAddress): IpMask =
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## Initialize network mask using address ``netmask``.
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if netmask.family == AddressFamily.IPv4:
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result.family = netmask.family
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result.mask4 = cast[ptr uint32](unsafeAddr netmask.address_v4[0])[]
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elif netmask.family == AddressFamily.IPv6:
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result.family = netmask.family
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result.mask6[0] = cast[ptr uint64](unsafeAddr netmask.address_v6[0])[]
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result.mask6[1] = cast[ptr uint64](unsafeAddr netmask.address_v6[8])[]
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proc init*(t: typedesc[IpMask], netmask: string): IpMask =
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## Initialize network mask using IPv4 or IPv6 address in text representation
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## ``netmask``.
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##
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## If ``netmask`` address string is invalid, result IpMask.family will be
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## set to ``AddressFamily.None``.
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try:
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var ip = parseIpAddress(netmask)
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var tip = initTAddress(ip, Port(0))
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result = t.init(tip)
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except ValueError:
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discard
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proc toIPv6*(address: TransportAddress): TransportAddress =
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## Map IPv4 ``address`` to IPv6 address.
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##
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## If ``address`` is IPv4 address then it will be mapped as:
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## <80 bits of zeros> + <16 bits of ones> + <32-bit IPv4 address>.
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##
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## If ``address`` is IPv6 address it will be returned without any changes.
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if address.family == AddressFamily.IPv4:
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result = TransportAddress(family: AddressFamily.IPv6)
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result.address_v6[10] = 0xFF'u8
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result.address_v6[11] = 0xFF'u8
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let data = cast[ptr uint32](unsafeAddr address.address_v4[0])[]
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cast[ptr uint32](addr result.address_v6[12])[] = data
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elif address.family == AddressFamily.IPv6:
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result = address
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proc isV4Mapped*(address: TransportAddress): bool =
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## Returns ``true`` if ``address`` is (IPv4 to IPv6) mapped address, e.g.
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## 0000:0000:0000:0000:0000:FFFF:xxxx:xxxx
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##
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## Procedure returns ``false`` if ``address`` family is IPv4.
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if address.family == AddressFamily.IPv6:
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let data0 = cast[ptr uint64](unsafeAddr address.address_v6[0])[]
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let data1 = cast[ptr uint16](unsafeAddr address.address_v6[8])[]
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let data2 = cast[ptr uint16](unsafeAddr address.address_v6[10])[]
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result = (data0 == 0'u64) and (data1 == 0x00'u16) and (data2 == 0xFFFF'u16)
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proc toIPv4*(address: TransportAddress): TransportAddress =
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## Get IPv4 from (IPv4 to IPv6) mapped address.
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##
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## If ``address`` is IPv4 address it will be returned without any changes.
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##
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## If ``address`` is not IPv4 to IPv6 mapped address, then result family will
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## be set to AddressFamily.None.
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if address.family == AddressFamily.IPv6:
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if isV4Mapped(address):
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result = TransportAddress(family: AddressFamily.IPv4)
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let data = cast[ptr uint32](unsafeAddr address.address_v6[12])[]
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cast[ptr uint32](addr result.address_v4[0])[] = data
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elif address.family == AddressFamily.IPv4:
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result = address
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proc mask*(a: TransportAddress, m: IpMask): TransportAddress =
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## Apply IP mask ``m`` to address ``a`` and return result address.
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##
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## If ``a`` family is IPv4 and ``m`` family is IPv6, masking is still
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## possible when ``m`` has ``FFFF:FFFF:FFFF:FFFF:FFFF:FFFF`` prefix. Returned
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## value will be IPv4 address.
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##
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## If ``a`` family is IPv6 and ``m`` family is IPv4, masking is still
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## possible when ``a`` holds (IPv4 to IPv6) mapped address. Returned value
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## will be IPv6 address.
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##
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## If ``a`` family is IPv4 and ``m`` family is IPv4, returned value will be
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## IPv4 address.
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##
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## If ``a`` family is IPv6 and ``m`` family is IPv6, returned value will be
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## IPv6 address.
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##
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## In all other cases returned address will have ``AddressFamily.None``.
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if a.family == AddressFamily.IPv4 and m.family == AddressFamily.IPv6:
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if (m.mask6[0] == 0xFFFF_FFFF_FFFF_FFFF'u64) and
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(m.mask6[1] and 0xFFFF_FFFF'u64) == 0xFFFF_FFFF'u64:
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result = TransportAddress(family: a.family)
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let mask = cast[uint32](m.mask6[1] shr 32)
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let data = cast[ptr uint32](unsafeAddr a.address_v4[0])[]
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cast[ptr uint32](addr result.address_v4[0])[] = data and mask
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result.port = a.port
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elif a.family == AddressFamily.IPv6 and m.family == AddressFamily.IPv4:
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var ip = a.toIPv4()
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if ip.family == AddressFamily.IPv4:
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let data = cast[ptr uint32](addr ip.address_v4[0])[]
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cast[ptr uint32](addr ip.address_v4[0])[] = data and m.mask4
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result = ip.toIPv6()
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result.port = a.port
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elif a.family == AddressFamily.IPv4 and m.family == AddressFamily.IPv4:
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result = TransportAddress(family: AddressFamily.IPv4)
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let data = cast[ptr uint32](unsafeAddr a.address_v4[0])[]
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cast[ptr uint32](addr result.address_v4[0])[] = data and m.mask4
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result.port = a.port
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elif a.family == AddressFamily.IPv6 and m.family == AddressFamily.IPv6:
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result = TransportAddress(family: AddressFamily.IPv6)
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let data0 = cast[ptr uint64](unsafeAddr a.address_v6[0])[]
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let data1 = cast[ptr uint64](unsafeAddr a.address_v6[8])[]
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cast[ptr uint64](addr result.address_v6[0])[] = data0 and m.mask6[0]
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cast[ptr uint64](addr result.address_v6[8])[] = data1 and m.mask6[1]
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result.port = a.port
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proc prefix*(mask: IpMask): int =
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## Returns number of bits set `1` in IP mask ``mask``.
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var hmask = mask.toHostOrder()
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if hmask.family == AddressFamily.IPv4:
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var n = hmask.mask4
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while n != 0:
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n = n shl 1
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inc(result)
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elif hmask.family == AddressFamily.IPv6:
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if hmask.mask6[0] == 0xFFFF_FFFF_FFFF_FFFF'u64:
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result += 64
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if hmask.mask6[1] == 0xFFFF_FFFF_FFFF_FFFF'u64:
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result += 64:
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else:
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var n = hmask.mask6[1]
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while n != 0:
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n = n shl 1
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inc(result)
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else:
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var n = hmask.mask6[0]
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while n != 0:
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n = n shl 1
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inc(result)
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proc subnetMask*(mask: IpMask): TransportAddress =
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## Returns TransportAddress representation of IP mask ``mask``.
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result = TransportAddress(family: mask.family)
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if mask.family == AddressFamily.IPv4:
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cast[ptr uint32](addr result.address_v4[0])[] = mask.mask4
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elif mask.family == AddressFamily.IPv6:
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cast[ptr uint64](addr result.address_v6[0])[] = mask.mask6[0]
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cast[ptr uint64](addr result.address_v6[8])[] = mask.mask6[1]
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proc `$`*(mask: IpMask): string =
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## Returns hexadecimal string representation of IP mask ``mask``.
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var host = mask.toHostOrder()
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result = ""
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if host.family == AddressFamily.IPv4:
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result = "0x"
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var n = 32
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var m = host.mask4
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while n > 0:
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n -= 4
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var c = cast[int]((m shr n) and 0x0F)
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if c < 10:
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result.add(chr(ord('0') + c))
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else:
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result.add(chr(ord('A') + (c - 10)))
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elif host.family == AddressFamily.IPv6:
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result = "0x"
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for i in 0..1:
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var n = 64
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var m = host.mask6[i]
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while n > 0:
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n -= 4
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var c = cast[int]((m shr n) and 0x0F)
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if c < 10:
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result.add(chr(ord('0') + c))
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else:
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result.add(chr(ord('A') + (c - 10)))
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proc init*(t: typedesc[IpNet], host: TransportAddress,
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prefix: int): IpNet {.inline.} =
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## Initialize IP Network using host address ``host`` and prefix length
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## ``prefix``.
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result.mask = IpMask.init(host.family, prefix)
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result.host = mask(host, result.mask)
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proc init*(t: typedesc[IpNet], host, mask: TransportAddress): IpNet {.inline.} =
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## Initialize IP Network using host address ``host`` and network mask
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## address ``mask``.
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##
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## Note that ``host`` and ``mask`` must be from the same IP family.
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if host.family == mask.family:
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result.mask = IpMask.init(mask)
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result.host = mask(host, result.mask)
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proc init*(t: typedesc[IpNet], host: TransportAddress,
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mask: IpMask): IpNet {.inline.} =
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## Initialize IP Network using host address ``host`` and network mask
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## ``mask``.
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result.mask = mask
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result.host = result.mask(host)
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proc init*(t: typedesc[IpNet], network: string): IpNet =
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## Initialize IP Network from string representation in format
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## <address>/<prefix length>.
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##
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## Not if <prefix length> is not present or its value is bigger then maximum
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## value (32 for IPv4 and 128 for IPv6), then `/32` and `/128` will be used
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## as prefix length.
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var parts = network.rsplit("/", maxsplit = 1)
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var host: TransportAddress
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var ipaddr: IpAddress
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var prefix: int
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try:
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ipaddr = parseIpAddress(parts[0])
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if ipaddr.family == IpAddressFamily.IPv4:
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host = TransportAddress(family: AddressFamily.IPv4)
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host.address_v4 = ipaddr.address_v4
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prefix = 32
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elif ipaddr.family == IpAddressFamily.IPv6:
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host = TransportAddress(family: AddressFamily.IPv6)
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host.address_v6 = ipaddr.address_v6
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prefix = 128
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if len(parts) > 1:
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prefix = parseInt(parts[1])
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if ipaddr.family == IpAddressFamily.IPv4 and
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(prefix < 0 or prefix > 32):
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prefix = 32
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elif ipaddr.family == IpAddressFamily.IPv6 and
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(prefix < 0 or prefix > 128):
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prefix = 128
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result = t.init(host, prefix)
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except:
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raise newException(TransportAddressError, "Incorrect address family!")
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proc contains*(net: IpNet, address: TransportAddress): bool =
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## Returns ``true`` if ``address`` belongs to IP Network ``net``
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if net.host.family == address.family:
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var host = mask(address, net.mask)
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result = (net.host == host)
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proc broadcast*(net: IpNet): TransportAddress =
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## Returns broadcast address for IP Network ``net``.
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result = TransportAddress(family: net.host.family)
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if result.family == AddressFamily.IPv4:
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var address = cast[ptr uint32](unsafeAddr net.host.address_v4[0])[]
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var mask = cast[ptr uint32](unsafeAddr net.mask.mask4)[]
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cast[ptr uint32](addr result.address_v4[0])[] = address or (not(mask))
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elif result.family == AddressFamily.IPv6:
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var address0 = cast[ptr uint64](unsafeAddr net.host.address_v6[0])[]
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var address1 = cast[ptr uint64](unsafeAddr net.host.address_v6[8])[]
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var data0 = cast[ptr uint64](unsafeAddr net.mask.mask6[0])[]
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var data1 = cast[ptr uint64](unsafeAddr net.mask.mask6[1])[]
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cast[ptr uint64](addr result.address_v6[0])[] = address0 or (not(data0))
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cast[ptr uint64](addr result.address_v6[8])[] = address1 or (not(data1))
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proc subnetMask*(net: IpNet): TransportAddress =
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## Returns netmask address for IP Network ``net``
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result = TransportAddress(family: net.host.family)
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if result.family == AddressFamily.IPv4:
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var address = cast[ptr uint32](unsafeAddr net.mask.mask4)[]
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cast[ptr uint32](addr result.address_v4[0])[] = address
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elif result.family == AddressFamily.IPv6:
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var address0 = cast[ptr uint64](unsafeAddr net.mask.mask6[0])[]
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var address1 = cast[ptr uint64](unsafeAddr net.mask.mask6[1])[]
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cast[ptr uint64](addr result.address_v6[0])[] = address0
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cast[ptr uint64](addr result.address_v6[8])[] = address1
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proc `and`*(address1, address2: TransportAddress): TransportAddress =
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## Bitwise ``and`` operation for ``address1 and address2``.
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##
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## Note only IPv4 and IPv6 addresses are supported. ``address1`` and
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## ``address2`` must be in equal IP family
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if address1.family == address2.family:
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if address1.family == AddressFamily.IPv4:
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let data1 = cast[ptr uint32](unsafeAddr address1.address_v4[0])[]
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let data2 = cast[ptr uint32](unsafeAddr address2.address_v4[0])[]
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result = TransportAddress(family: address1.family)
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cast[ptr uint32](addr result.address_v4[0])[] = data1 and data2
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elif address1.family == AddressFamily.IPv6:
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let data1 = cast[ptr uint64](unsafeAddr address1.address_v6[0])[]
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let data2 = cast[ptr uint64](unsafeAddr address1.address_v6[8])[]
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let data3 = cast[ptr uint64](unsafeAddr address2.address_v6[0])[]
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let data4 = cast[ptr uint64](unsafeAddr address2.address_v6[8])[]
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result = TransportAddress(family: address1.family)
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cast[ptr uint64](addr result.address_v6[0])[] = data1 and data3
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cast[ptr uint64](addr result.address_v6[8])[] = data2 and data4
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proc `or`*(address1, address2: TransportAddress): TransportAddress =
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## Bitwise ``or`` operation for ``address1 or address2``.
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##
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## Note only IPv4 and IPv6 addresses are supported. ``address1`` and
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## ``address2`` must be in equal IP family
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if address1.family == address2.family:
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if address1.family == AddressFamily.IPv4:
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let data1 = cast[ptr uint32](unsafeAddr address1.address_v4[0])[]
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let data2 = cast[ptr uint32](unsafeAddr address2.address_v4[0])[]
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result = TransportAddress(family: address1.family)
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cast[ptr uint32](addr result.address_v4[0])[] = data1 or data2
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elif address1.family == AddressFamily.IPv6:
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let data1 = cast[ptr uint64](unsafeAddr address1.address_v6[0])[]
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let data2 = cast[ptr uint64](unsafeAddr address1.address_v6[8])[]
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let data3 = cast[ptr uint64](unsafeAddr address2.address_v6[0])[]
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let data4 = cast[ptr uint64](unsafeAddr address2.address_v6[8])[]
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result = TransportAddress(family: address1.family)
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cast[ptr uint64](addr result.address_v6[0])[] = data1 or data3
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cast[ptr uint64](addr result.address_v6[8])[] = data2 or data4
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proc `not`*(address: TransportAddress): TransportAddress =
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## Bitwise ``not`` operation for ``address``.
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if address.family == AddressFamily.IPv4:
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let data = cast[ptr uint32](unsafeAddr address.address_v4[0])[]
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result = TransportAddress(family: address.family)
|
||||
cast[ptr uint32](addr result.address_v4[0])[] = not(data)
|
||||
elif address.family == AddressFamily.IPv6:
|
||||
let data1 = cast[ptr uint64](unsafeAddr address.address_v6[0])[]
|
||||
let data2 = cast[ptr uint64](unsafeAddr address.address_v6[8])[]
|
||||
result = TransportAddress(family: address.family)
|
||||
cast[ptr uint64](addr result.address_v6[0])[] = not(data1)
|
||||
cast[ptr uint64](addr result.address_v6[8])[] = not(data2)
|
||||
|
||||
proc `+`*(address: TransportAddress, v: uint): TransportAddress =
|
||||
## Add to IPv4/IPv6 transport ``address`` unsigned integer ``v``.
|
||||
result = TransportAddress(family: address.family)
|
||||
if address.family == AddressFamily.IPv4:
|
||||
var a: uint64
|
||||
let data = cast[ptr uint32](unsafeAddr address.address_v4[0])
|
||||
when system.cpuEndian == bigEndian:
|
||||
a = data
|
||||
else:
|
||||
swapEndian32(addr a, data)
|
||||
a = a + v
|
||||
bigEndian32(cast[pointer](addr result.address_v4[0]), addr a)
|
||||
elif address.family == AddressFamily.IPv6:
|
||||
var a1, a2: uint64
|
||||
let data1 = cast[ptr uint64](unsafeAddr address.address_v6[0])
|
||||
let data2 = cast[ptr uint64](unsafeAddr address.address_v6[8])
|
||||
when system.cpuEndian == bigEndian:
|
||||
a1 = data1
|
||||
a2 = data2
|
||||
else:
|
||||
swapEndian64(addr a1, data1)
|
||||
swapEndian64(addr a2, data2)
|
||||
var a3 = a2 + v
|
||||
if a3 < a2:
|
||||
## Overflow
|
||||
a1 = a1 + 1
|
||||
bigEndian64(cast[pointer](addr result.address_v6[0]), addr a1)
|
||||
bigEndian64(cast[pointer](addr result.address_v6[8]), addr a3)
|
||||
|
||||
proc inc*(address: var TransportAddress, v: uint = 1'u) =
|
||||
## Increment IPv4/IPv6 transport ``address`` by unsigned integer ``v``.
|
||||
address = address + v
|
||||
|
||||
proc `$`*(net: IpNet): string =
|
||||
## Return string representation of IP network in format:
|
||||
## <IPv4 or IPv6 address>/<prefix length>.
|
||||
if net.host.family == AddressFamily.IPv4:
|
||||
var a = IpAddress(family: IpAddressFamily.IPv4,
|
||||
address_v4: net.host.address_v4)
|
||||
result = $a
|
||||
result.add("/")
|
||||
result.add($net.mask.prefix())
|
||||
elif net.host.family == AddressFamily.IPv6:
|
||||
var a = IpAddress(family: IpAddressFamily.IPv6,
|
||||
address_v6: net.host.address_v6)
|
||||
result = $a
|
||||
result.add("/")
|
||||
result.add($net.mask.prefix())
|
||||
|
||||
proc isUnspecified*(address: TransportAddress): bool {.inline.} =
|
||||
## Returns ``true`` if ``address`` is not specified yet, e.g. its ``family``
|
||||
## field is not set or equal to ``AddressFamily.None``.
|
||||
if address.family == AddressFamily.None:
|
||||
result = true
|
||||
|
||||
proc isMulticast*(address: TransportAddress): bool =
|
||||
## Returns ``true`` if ``address`` is a multicast address.
|
||||
##
|
||||
## ``IPv4``: 224.0.0.0 - 239.255.255.255
|
||||
##
|
||||
## ``IPv6``: FF00:: - FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF
|
||||
if address.family == AddressFamily.IPv4:
|
||||
result = ((address.address_v4[0] and 0xF0'u8) == 0xE0'u8)
|
||||
elif address.family == AddressFamily.IPv6:
|
||||
result = (address.address_v6[0] == 0xFF'u8)
|
||||
|
||||
proc isInterfaceLocalMulticast*(address: TransportAddress): bool =
|
||||
## Returns ``true`` if ``address`` is interface local multicast address.
|
||||
##
|
||||
## ``IPv4``: N/A (always returns ``false``)
|
||||
if address.family == AddressFamily.IPv6:
|
||||
result = (address.address_v6[0] == 0xFF'u8) and
|
||||
((address.address_v6[1] and 0x0F'u8) == 0x01'u8)
|
||||
|
||||
proc isLinkLocalMulticast*(address: TransportAddress): bool =
|
||||
## Returns ``true`` if ``address` is link local multicast address.
|
||||
##
|
||||
## ``IPv4``: 224.0.0.0 - 224.0.0.255
|
||||
if address.family == AddressFamily.IPv4:
|
||||
result = (address.address_v4[0] == 224'u8) and
|
||||
(address.address_v4[1] == 0'u8) and
|
||||
(address.address_v4[2] == 0'u8)
|
||||
elif address.family == AddressFamily.IPv6:
|
||||
result = (address.address_v6[0] == 0xFF'u8) and
|
||||
((address.address_v6[1] and 0x0F'u8) == 0x02'u8)
|
||||
|
||||
proc isLoopback*(address: TransportAddress): bool =
|
||||
## Returns ``true`` if ``address`` is loopback address.
|
||||
##
|
||||
## ``IPv4``: 127.0.0.0 - 127.255.255.255
|
||||
##
|
||||
## ``IPv6``: ::1
|
||||
if address.family == AddressFamily.IPv4:
|
||||
result = (address.address_v4[0] == 127'u8)
|
||||
elif address.family == AddressFamily.IPv6:
|
||||
var test = 0
|
||||
for i in 0..<(len(address.address_v6) - 1):
|
||||
test = test or cast[int](address.address_v6[i])
|
||||
result = (test == 0) and (address.address_v6[15] == 1'u8)
|
||||
|
||||
proc isAnyLocal*(address: TransportAddress): bool =
|
||||
## Returns ``true`` if ``address`` is a wildcard address.
|
||||
##
|
||||
## ``IPv4``: 0.0.0.0
|
||||
##
|
||||
## ``IPv6``: ::
|
||||
if address.family == AddressFamily.IPv4:
|
||||
let data = cast[ptr uint32](unsafeAddr address.address_v4[0])[]
|
||||
result = (data == 0'u32)
|
||||
elif address.family == AddressFamily.IPv6:
|
||||
let data1 = cast[ptr uint32](unsafeAddr address.address_v6[0])[]
|
||||
let data2 = cast[ptr uint32](unsafeAddr address.address_v6[4])[]
|
||||
let data3 = cast[ptr uint32](unsafeAddr address.address_v6[8])[]
|
||||
let data4 = cast[ptr uint32](unsafeAddr address.address_v6[12])[]
|
||||
result = ((data1 or data2 or data3 or data4) == 0'u32)
|
||||
|
||||
proc isLinkLocal*(address: TransportAddress): bool =
|
||||
## Returns ``true`` if ``address`` is link local address.
|
||||
##
|
||||
## ``IPv4``: 169.254.0.0 - 169.254.255.255
|
||||
##
|
||||
## ``IPv6``: FE80:: - FEBF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF
|
||||
if address.family == AddressFamily.IPv4:
|
||||
result = (address.address_v4[0] == 169'u8) and
|
||||
(address.address_v4[1] == 254'u8)
|
||||
elif address.family == AddressFamily.IPv6:
|
||||
result = (address.address_v6[0] == 0xFE'u8) and
|
||||
((address.address_v6[1] and 0xC0'u8) == 0x80'u8)
|
||||
|
||||
proc isLinkLocalUnicast*(address: TransportAddress): bool {.inline.} =
|
||||
result = isLinkLocal(address)
|
||||
|
||||
proc isSiteLocal*(address: TransportAddress): bool =
|
||||
## Returns ``true`` if ``address`` is site local address.
|
||||
##
|
||||
## ``IPv4``: 10.0.0.0 - 10.255.255.255, 172.16.0.0 - 172.31.255.255,
|
||||
## 192.168.0.0 - 192.168.255.255
|
||||
##
|
||||
## ``IPv6``: FEC0:: - FEFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF
|
||||
if address.family == AddressFamily.IPv4:
|
||||
result = (address.address_v4[0] == 10'u8) or
|
||||
((address.address_v4[0] == 172'u8) and
|
||||
((address.address_v4[1] and 0xF0) == 16)) or
|
||||
((address.address_v4[0] == 192'u8) and
|
||||
((address.address_v4[1] == 168'u8)))
|
||||
elif address.family == AddressFamily.IPv6:
|
||||
result = (address.address_v6[0] == 0xFE'u8) and
|
||||
((address.address_v6[1] and 0xC0'u8) == 0xC0'u8)
|
||||
|
||||
proc isGlobalMulticast*(address: TransportAddress): bool =
|
||||
## Returns ``true`` if the multicast address has global scope.
|
||||
##
|
||||
## ``IPv4``: 224.0.1.0 - 238.255.255.255
|
||||
##
|
||||
## ``IPv6``: FF0E:: - FFFE:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF
|
||||
if address.family == AddressFamily.IPv4:
|
||||
result = (address.address_v4[0] >= 224'u8) and
|
||||
(address.address_v4[0] <= 238'u8) and
|
||||
not(
|
||||
(address.address_v4[0] == 224'u8) and
|
||||
(address.address_v4[1] == 0'u8) and
|
||||
(address.address_v4[2] == 0'u8)
|
||||
)
|
||||
elif address.family == AddressFamily.IPv6:
|
||||
result = (address.address_v6[0] == 0xFF'u8) and
|
||||
((address.address_v6[1] and 0x0F'u8) == 0x0E'u8)
|
||||
|
||||
when isMainModule:
|
||||
var MaskVectors = [
|
||||
["192.168.1.127:1024", "255.255.255.128", "192.168.1.0:1024"],
|
||||
["192.168.1.127:1024", "255.255.255.192", "192.168.1.64:1024"],
|
||||
["192.168.1.127:1024", "255.255.255.224", "192.168.1.96:1024"],
|
||||
["192.168.1.127:1024", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ff80",
|
||||
"192.168.1.0:1024"],
|
||||
["192.168.1.127:1024", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffc0",
|
||||
"192.168.1.64:1024"],
|
||||
["192.168.1.127:1024", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffe0",
|
||||
"192.168.1.96:1024"],
|
||||
["192.168.1.127:1024", "255.0.255.0", "192.0.1.0:1024"],
|
||||
["[2001:db8::1]:1024", "ffff:ff80::", "[2001:d80::]:1024"],
|
||||
["[2001:db8::1]:1024", "f0f0:0f0f::", "[2000:d08::]:1024"]
|
||||
]
|
||||
for item in MaskVectors:
|
||||
var a = initTAddress(item[0])
|
||||
var m = IpMask.init(item[1])
|
||||
var r = a.mask(m)
|
||||
echo r
|
||||
# var temp = [0'u8, 0, 255, 255, 255, 255, 255, 0]
|
||||
# echo toHex(cast[ptr uint64](addr temp[0])[])
|
||||
# # {IPv4(192, 168, 1, 127), IPMask(ParseIP("255.255.255.192")), IPv4(192, 168, 1, 64)},
|
||||
# echo initTAddress("255.255.255.128", 0).toIPv6()
|
||||
# var a = initTAddress("255.255.255.0", 0).toIPv6()
|
||||
# echo a
|
||||
# var m = IpMask.init(a)
|
||||
# var b = initTAddress("192.168.1.127", 0)
|
||||
# echo b.mask(m)
|
||||
# # echo a.mask(m)
|
||||
|
|
@ -0,0 +1,219 @@
|
|||
import unittest, strutils
|
||||
import ../libp2p/ipnet/ipnet
|
||||
|
||||
const MaskVectors = [
|
||||
["192.168.1.127:1024", "255.255.255.128", "192.168.1.0:1024"],
|
||||
["192.168.1.127:1024", "255.255.255.192", "192.168.1.64:1024"],
|
||||
["192.168.1.127:1024", "255.255.255.224", "192.168.1.96:1024"],
|
||||
["192.168.1.127:1024", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ff80",
|
||||
"192.168.1.0:1024"],
|
||||
["192.168.1.127:1024", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffc0",
|
||||
"192.168.1.64:1024"],
|
||||
["192.168.1.127:1024", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffe0",
|
||||
"192.168.1.96:1024"],
|
||||
["192.168.1.127:1024", "255.0.255.0", "192.0.1.0:1024"],
|
||||
["[2001:db8::1]:1024", "ffff:ff80::", "[2001:d80::]:1024"],
|
||||
["[2001:db8::1]:1024", "f0f0:0f0f::", "[2000:d08::]:1024"]
|
||||
]
|
||||
|
||||
const NonCanonicalMasks = [
|
||||
["ip", "0.255.255.255", "-1"],
|
||||
["ip", "255.0.255.255", "-1"],
|
||||
["ip", "255.255.0.255", "-1"],
|
||||
["ip", "255.255.255.0", "24"],
|
||||
["ms", "0FFFFFFF", "-1"],
|
||||
["ms", "F0FFFFFF", "-1"],
|
||||
["ms", "FF0FFFFF", "-1"],
|
||||
["ms", "FFF0FFFF", "-1"],
|
||||
["ms", "FFFF0FFF", "-1"],
|
||||
["ms", "FFFFF0FF", "-1"],
|
||||
["ms", "FFFFFF0F", "-1"],
|
||||
["ms", "FFFFFFF0", "28"],
|
||||
["ip", "00FF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF", "-1"],
|
||||
["ip", "FF00:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF", "-1"],
|
||||
["ip", "FFFF:00FF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF", "-1"],
|
||||
["ip", "FFFF:FF00:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF", "-1"],
|
||||
["ip", "FFFF:FFFF:00FF:FFFF:FFFF:FFFF:FFFF:FFFF", "-1"],
|
||||
["ip", "FFFF:FFFF:FF00:FFFF:FFFF:FFFF:FFFF:FFFF", "-1"],
|
||||
["ip", "FFFF:FFFF:FFFF:00FF:FFFF:FFFF:FFFF:FFFF", "-1"],
|
||||
["ip", "FFFF:FFFF:FFFF:FF00:FFFF:FFFF:FFFF:FFFF", "-1"],
|
||||
["ip", "FFFF:FFFF:FFFF:FFFF:00FF:FFFF:FFFF:FFFF", "-1"],
|
||||
["ip", "FFFF:FFFF:FFFF:FFFF:FF00:FFFF:FFFF:FFFF", "-1"],
|
||||
["ip", "FFFF:FFFF:FFFF:FFFF:FFFF:00FF:FFFF:FFFF", "-1"],
|
||||
["ip", "FFFF:FFFF:FFFF:FFFF:FFFF:FF00:FFFF:FFFF", "-1"],
|
||||
["ip", "FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:00FF:FFFF", "-1"],
|
||||
["ip", "FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FF00:FFFF", "-1"],
|
||||
["ip", "FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:00FF", "-1"],
|
||||
["ip", "FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FF00", "120"],
|
||||
["ms", "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", "-1"],
|
||||
["ms", "F0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", "-1"],
|
||||
["ms", "FF0FFFFFFFFFFFFFFFFFFFFFFFFFFFFF", "-1"],
|
||||
["ms", "FFF0FFFFFFFFFFFFFFFFFFFFFFFFFFFF", "-1"],
|
||||
["ms", "FFFF0FFFFFFFFFFFFFFFFFFFFFFFFFFF", "-1"],
|
||||
["ms", "FFFFF0FFFFFFFFFFFFFFFFFFFFFFFFFF", "-1"],
|
||||
["ms", "FFFFFF0FFFFFFFFFFFFFFFFFFFFFFFFF", "-1"],
|
||||
["ms", "FFFFFFF0FFFFFFFFFFFFFFFFFFFFFFFF", "-1"],
|
||||
["ms", "FFFFFFFF0FFFFFFFFFFFFFFFFFFFFFFF", "-1"],
|
||||
["ms", "FFFFFFFFF0FFFFFFFFFFFFFFFFFFFFFF", "-1"],
|
||||
["ms", "FFFFFFFFFF0FFFFFFFFFFFFFFFFFFFFF", "-1"],
|
||||
["ms", "FFFFFFFFFFF0FFFFFFFFFFFFFFFFFFFF", "-1"],
|
||||
["ms", "FFFFFFFFFFFF0FFFFFFFFFFFFFFFFFFF", "-1"],
|
||||
["ms", "FFFFFFFFFFFFF0FFFFFFFFFFFFFFFFFF", "-1"],
|
||||
["ms", "FFFFFFFFFFFFFF0FFFFFFFFFFFFFFFFF", "-1"],
|
||||
["ms", "FFFFFFFFFFFFFFF0FFFFFFFFFFFFFFFF", "-1"],
|
||||
["ms", "FFFFFFFFFFFFFFFF0FFFFFFFFFFFFFFF", "-1"],
|
||||
["ms", "FFFFFFFFFFFFFFFFF0FFFFFFFFFFFFFF", "-1"],
|
||||
["ms", "FFFFFFFFFFFFFFFFFF0FFFFFFFFFFFFF", "-1"],
|
||||
["ms", "FFFFFFFFFFFFFFFFFFF0FFFFFFFFFFFF", "-1"],
|
||||
["ms", "FFFFFFFFFFFFFFFFFFFF0FFFFFFFFFFF", "-1"],
|
||||
["ms", "FFFFFFFFFFFFFFFFFFFFF0FFFFFFFFFF", "-1"],
|
||||
["ms", "FFFFFFFFFFFFFFFFFFFFFF0FFFFFFFFF", "-1"],
|
||||
["ms", "FFFFFFFFFFFFFFFFFFFFFFF0FFFFFFFF", "-1"],
|
||||
["ms", "FFFFFFFFFFFFFFFFFFFFFFFF0FFFFFFF", "-1"],
|
||||
["ms", "FFFFFFFFFFFFFFFFFFFFFFFFF0FFFFFF", "-1"],
|
||||
["ms", "FFFFFFFFFFFFFFFFFFFFFFFFFF0FFFFF", "-1"],
|
||||
["ms", "FFFFFFFFFFFFFFFFFFFFFFFFFFF0FFFF", "-1"],
|
||||
["ms", "FFFFFFFFFFFFFFFFFFFFFFFFFFFF0FFF", "-1"],
|
||||
["ms", "FFFFFFFFFFFFFFFFFFFFFFFFFFFFF0FF", "-1"],
|
||||
["ms", "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0F", "-1"],
|
||||
["ms", "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0", "124"],
|
||||
]
|
||||
|
||||
const NetworkVectors = [
|
||||
["135.104.0.0/32", "true", "135.104.0.0:0", "FFFFFFFF"],
|
||||
["0.0.0.0/24", "true", "0.0.0.0:0", "FFFFFF00"],
|
||||
["135.104.0.0/24", "true", "135.104.0.0:0", "FFFFFF00"],
|
||||
["135.104.0.1/32", "true", "135.104.0.1:0", "FFFFFFFF"],
|
||||
["135.104.0.1/24", "true", "135.104.0.1:0", "FFFFFF00"],
|
||||
["::1/128", "true", "[::1]:0", "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"],
|
||||
["abcd:2345::/127", "true", "[abcd:2345::]:0",
|
||||
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE"],
|
||||
["abcd:2345::/65", "true", "[abcd:2345::]:0",
|
||||
"FFFFFFFFFFFFFFFF8000000000000000"],
|
||||
["abcd:2345::/64", "true", "[abcd:2345::]:0",
|
||||
"FFFFFFFFFFFFFFFF0000000000000000"],
|
||||
["abcd:2345::/63", "true", "[abcd:2345::]:0",
|
||||
"FFFFFFFFFFFFFFFE0000000000000000"],
|
||||
["abcd:2345::/33", "true", "[abcd:2345::]:0",
|
||||
"FFFFFFFF800000000000000000000000"],
|
||||
["abcd:2345::/32", "true", "[abcd:2345::]:0",
|
||||
"FFFFFFFF000000000000000000000000"],
|
||||
["abcd:2344::/31", "true", "[abcd:2344::]:0",
|
||||
"FFFFFFFE000000000000000000000000"],
|
||||
["abcd:2300::/24", "true", "[abcd:2300::]:0",
|
||||
"FFFFFF00000000000000000000000000"],
|
||||
["abcd:2345::/24", "true", "[abcd:2345::]:0",
|
||||
"FFFFFF00000000000000000000000000"],
|
||||
["2001:db8::/48", "true", "[2001:db8::]:0",
|
||||
"FFFFFFFFFFFF00000000000000000000"],
|
||||
["2001:db8::1/48", "true", "[2001:db8::1]:0",
|
||||
"FFFFFFFFFFFF00000000000000000000"],
|
||||
["192.168.1.1/255.255.255.0", "true", "192.168.1.1:0", "FFFFFF00"],
|
||||
["192.168.1.1/35", "false", "", ""],
|
||||
["2001:db8::1/-1", "false", "", ""],
|
||||
["2001:db8::1/-0", "false", "", ""],
|
||||
["-0.0.0.0/32", "false", "", ""],
|
||||
["0.-1.0.0/32", "false", "", ""],
|
||||
["0.0.-2.0/32", "false", "", ""],
|
||||
["0.0.0.-3/32", "false", "", ""],
|
||||
["0.0.0.0/-0", "false", "", ""],
|
||||
["", "false", "", ""]
|
||||
]
|
||||
|
||||
const NetworkContainsVectors = [
|
||||
["172.16.1.1:1024", "172.16.0.0/12", "true"],
|
||||
["172.24.0.1:1024", "172.16.0.0/13", "false"],
|
||||
["192.168.0.3:1024", "192.168.0.0/0.0.255.252", "true"],
|
||||
["192.168.0.4:1024", "192.168.0.0/0.255.0.252", "false"],
|
||||
["[2001:db8:1:2::1]:1024", "2001:db8:1::/47", "true"],
|
||||
["[2001:db8:1:2::1]:1024", "2001:db8:2::/47", "false"],
|
||||
["[2001:db8:1:2::1]:1024", "2001:db8:1::/ffff:0:ffff::", "true"],
|
||||
["[2001:db8:1:2::1]:1024", "2001:db8:1::/0:0:0:ffff::", "false"]
|
||||
]
|
||||
|
||||
suite "IP network utilities test suite":
|
||||
|
||||
test "IpMask test vectors":
|
||||
for item in MaskVectors:
|
||||
var a = initTAddress(item[0])
|
||||
var m = IpMask.initIp(item[1])
|
||||
var r = a.mask(m)
|
||||
check $r == item[2]
|
||||
|
||||
test "IpMask serialization/deserialization test":
|
||||
for i in 1..32:
|
||||
var m = IpMask.init(AddressFamily.IPv4, i)
|
||||
check m.prefix() == i
|
||||
var s0x = `$`(m, true)
|
||||
var s = $m
|
||||
var sip = m.ip()
|
||||
var m1 = IpMask.init(s0x)
|
||||
var m2 = IpMask.init(s)
|
||||
var m3 = IpMask.initIp(sip)
|
||||
check:
|
||||
m == m1
|
||||
m == m2
|
||||
m == m3
|
||||
for i in 1..128:
|
||||
var m = IpMask.init(AddressFamily.IPv6, i)
|
||||
check m.prefix() == i
|
||||
var s0x = `$`(m, true)
|
||||
var s = $m
|
||||
var sip = m.ip()
|
||||
var m1 = IpMask.init(s0x)
|
||||
var m2 = IpMask.init(s)
|
||||
var m3 = IpMask.initIp(sip)
|
||||
check:
|
||||
m == m1
|
||||
m == m2
|
||||
m == m3
|
||||
|
||||
test "IpMask non-canonical masks":
|
||||
for item in NonCanonicalMasks:
|
||||
var m: IpMask
|
||||
if item[0] == "ip":
|
||||
m = IpMask.initIp(item[1])
|
||||
elif item[0] == "ms":
|
||||
m = IpMask.init(item[1])
|
||||
var c = $(m.prefix())
|
||||
check:
|
||||
c == item[2]
|
||||
|
||||
test "IpNet test vectors":
|
||||
for item in NetworkVectors:
|
||||
var res: bool
|
||||
var inet: IpNet
|
||||
try:
|
||||
inet = IpNet.init(item[0])
|
||||
res = true
|
||||
except:
|
||||
res = false
|
||||
check:
|
||||
$res == item[1]
|
||||
if res:
|
||||
check:
|
||||
$inet.host == item[2]
|
||||
$inet.mask == $item[3]
|
||||
|
||||
test "IpNet contains test vectors":
|
||||
for item in NetworkContainsVectors:
|
||||
var a = initTAddress(item[0])
|
||||
var n = IpNet.init(item[1])
|
||||
var res = a in n
|
||||
check:
|
||||
$res == item[2]
|
||||
|
||||
test "IpNet serialization/deserialization test":
|
||||
var ip4 = initTAddress("192.168.1.0:1024")
|
||||
for i in 1..32:
|
||||
var net = IpNet.init(ip4, i)
|
||||
var s1 = $net
|
||||
var net2 = IpNet.init(s1)
|
||||
check net == net2
|
||||
|
||||
var ip6 = initTAddress("[8000:f123:f456:cafe::]:1024")
|
||||
for i in 1..128:
|
||||
var net = IpNet.init(ip6, i)
|
||||
var s1 = $net
|
||||
var net2 = IpNet.init(s1)
|
||||
check net == net2
|
||||
|
|
@ -2,3 +2,4 @@ import unittest
|
|||
import testvarint, testbase32, testbase58, testbase64
|
||||
import testrsa, testecnist, tested25519, testcrypto
|
||||
import testmultibase, testmultihash, testmultiaddress, testcid, testpeer
|
||||
import testipnet, testiface
|
||||
|
|
|
|||
Loading…
Reference in New Issue