Modul:IP/doc
Module:IP is a library for working with IP addresses and subnets. It can handle both IPv4 and IPv6. The library exports four classes, IPAddress, Subnet, IPv4Collection, and IPv6Collection.
Loading the library
[sunting sumber]local IP = require('Module:IP')
local IPAddress = IP.IPAddress
local Subnet = IP.Subnet
IPAddress
[sunting sumber]The IPAddress class is used to work with single IP addresses. To create a new IPAddress object:
local ipAddress = IPAddress.new(ipString)
The ipString variable can be a valid IPv4 or IPv6 address.
Examples:
local ipv4Address = IPAddress.new('1.2.3.4')
local ipv6Address = IPAddress.new('2001:db8::ff00:12:3456')
IPAddress objects can be compared with relational operators:
-- Equality
IPAddress.new('1.2.3.4') == IPAddress.new('1.2.3.4') -- true
IPAddress.new('1.2.3.4') == IPAddress.new('1.2.3.5') -- false
-- Less than / greater than
IPAddress.new('1.2.3.4') < IPAddress.new('1.2.3.5') -- true
IPAddress.new('1.2.3.4') > IPAddress.new('1.2.3.5') -- false
IPAddress.new('1.2.3.4') <= IPAddress.new('1.2.3.5') -- true
IPAddress.new('1.2.3.4') <= IPAddress.new('1.2.3.4') -- true
You can use tostring on them (this is equivalent to using getIP):
tostring(IPAddress.new('1.2.3.4')) -- "1.2.3.4"
tostring(IPAddress.new('2001:db8::ff00:12:3456')) -- "2001:db8::ff00:12:3456"
-- Expanded IPv6 addresses are abbreviated:
tostring(IPAddress.new('2001:db8:0:0:0:0:0:0')) -- "2001:db8::"
You can also concatenate them:
IPAddress.new('1.2.3.4') .. ' foo' -- "1.2.3.4 foo"
IPAddress.new('1.2.3.4') .. IPAddress.new('5.6.7.8') -- "1.2.3.45.6.7.8"
IPAddress objects have several methods, outlined below.
getIP
[sunting sumber]ipAddress:getIP()
Returns a string representation of the IP address. IPv6 addresses are abbreviated if possible.
Examples:
IPAddress.new('1.2.3.4'):getIP() -- "1.2.3.4"
IPAddress.new('2001:db8::ff00:12:3456'):getIP() -- "2001:db8::ff00:12:3456"
IPAddress.new('2001:db8:0:0:0:0:0:0'):getIP() -- "2001:db8::"
getVersion
[sunting sumber]ipAddress:getVersion()
Returns the version of the IP protocol being used. This is "IPv4" for IPv4 addresses, and "IPv6" for IPv6 addresses.
Examples:
IPAddress.new('1.2.3.4'):getVersion() -- "IPv4"
IPAddress.new('2001:db8::ff00:12:3456'):getVersion() -- "IPv6"
isIPv4
[sunting sumber]ipAddress:isIPv4()
Returns true if the IP address is an IPv4 address, and false otherwise.
Examples:
IPAddress.new('1.2.3.4'):isIPv4() -- true
IPAddress.new('2001:db8::ff00:12:3456'):isIPv4() -- false
isIPv6
[sunting sumber]ipAddress:isIPv6()
Returns true if the IP address is an IPv6 address, and false otherwise.
Examples:
IPAddress.new('1.2.3.4'):isIPv6() -- false
IPAddress.new('2001:db8::ff00:12:3456'):isIPv6() -- true
isInSubnet
[sunting sumber]ipAddress:isInSubnet(subnet)
Returns true if the IP address is in the subnet subnet, and false otherwise. subnet may be a Subnet object or a CIDR string.
Examples:
IPAddress.new('1.2.3.4'):isInSubnet('1.2.3.0/24') -- true
IPAddress.new('1.2.3.4'):isInSubnet('1.2.4.0/24') -- false
IPAddress.new('1.2.3.4'):isInSubnet(Subnet.new('1.2.3.0/24')) -- true
IPAddress.new('2001:db8::ff00:12:3456'):isInSubnet('2001:db8::ff00:12:0/112') -- true
getSubnet
[sunting sumber]ipAddress:getSubnet(bitLength)
Returns a Subnet object for the subnet with a bit length of bitLength which contains the current IP. The bitLength parameter must be an integer between 0 and 32 for IPv4 addresses, or an integer between 0 and 128 for IPv6 addresses.
Examples:
IPAddress.new('1.2.3.4'):getSubnet(24) -- Equivalent to Subnet.new('1.2.3.0/24')
getNextIP
[sunting sumber]ipAddress:getNextIP()
Returns a new IPAddress object equivalent to the current IP address incremented by one. The IPv4 address "255.255.255.255" rolls around to "0.0.0.0", and the IPv6 address "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff" rolls around to "::".
Examples:
IPAddress.new('1.2.3.4'):getNextIP() -- Equivalent to IPAddress.new('1.2.3.5')
IPAddress.new('2001:db8::ff00:12:3456'):getNextIP() -- Equivalent to IPAddress.new('2001:db8::ff00:12:3457')
IPAddress.new('255.255.255.255'):getNextIP() -- Equivalent to IPAddress.new('0.0.0.0')
getPreviousIP
[sunting sumber]ipAddress:getPreviousIP()
Returns a new IPAddress object equivalent to the current IP address decremented by one. The IPv4 address "0.0.0.0" rolls around to "255.255.255.255", and the IPv6 address "::" rolls around to "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff".
Examples:
IPAddress.new('1.2.3.4'):getPreviousIP() -- Equivalent to IPAddress.new('1.2.3.3')
IPAddress.new('2001:db8::ff00:12:3456'):getPreviousIP() -- Equivalent to IPAddress.new('2001:db8::ff00:12:3455')
IPAddress.new('0.0.0.0'):getPreviousIP() -- Equivalent to IPAddress.new('255.255.255.255')
Subnet
[sunting sumber]The Subnet class is used to work with subnetworks of IPv4 or IPv6 addresses. To create a new Subnet object:
local subnet = Subnet.new(cidrString)
cidrString must be a valid IPv4 or IPv6 CIDR string.
Subnet objects can be compared for equality:
Subnet.new('1.2.3.0/24') == Subnet.new('1.2.3.0/24') -- true
Subnet.new('1.2.3.0/24') == Subnet.new('1.2.3.0/25') -- false
Subnet.new('1.2.3.0/24') == Subnet.new('2001:db8::ff00:12:0/112') -- false
Subnet.new('2001:db8::ff00:12:0/112') == Subnet.new('2001:db8::ff00:12:0/112') -- true
Subnet.new('2001:db8:0:0:0:0:0:0/112') == Subnet.new('2001:db8::/112') -- true
You can use tostring on them (this is equivalent to getCIDR):
tostring(Subnet.new('1.2.3.0/24')) -- "1.2.3.0/24"
tostring(Subnet.new('2001:db8::ff00:12:0/112')) -- "2001:db8::ff00:12:0/112"
tostring(Subnet.new('2001:db8:0:0:0:0:0:0/112')) -- "2001:db8::/112"
You can also concatenate them:
Subnet.new('1.2.3.0/24') .. ' foo' -- "1.2.3.0/24 foo"
Subnet.new('1.2.3.0/24') .. Subnet.new('4.5.6.0/24') -- "1.2.3.0/244.5.6.0/24"
Subnet objects have several methods, outlined below.
getPrefix
[sunting sumber]subnet:getPrefix()
Returns an IPAddress object for the lowest IP address in the subnet.
Examples:
Subnet.new('1.2.3.0/24'):getPrefix() -- Equivalent to IPAddress.new('1.2.3.0')
Subnet.new('2001:db8::ff00:12:0/112'):getPrefix() -- Equivalent to IPAddress.new('2001:db8::ff00:12:0')
getHighestIP
[sunting sumber]subnet:getHighestIP()
Returns an IPAddress object for the highest IP address in the subnet.
Examples:
Subnet.new('1.2.3.0/24'):getHighestIP() -- Equivalent to IPAddress.new('1.2.3.255')
Subnet.new('2001:db8::ff00:12:0/112'):getHighestIP() -- Equivalent to IPAddress.new('2001:db8::ff00:12:ffff')
getBitLength
[sunting sumber]subnet:getBitLength()
Returns the bit length of the subnet. This is an integer between 0 and 32 for IPv4 addresses, or an integer between 0 and 128 for IPv6 addresses.
Examples:
Subnet.new('1.2.3.0/24'):getBitLength() -- 24
Subnet.new('2001:db8::ff00:12:0/112'):getBitLength() -- 112
getCIDR
[sunting sumber]subnet:getCIDR()
Returns a CIDR string representation of the subnet.
Examples:
Subnet.new('1.2.3.0/24'):getCIDR() -- "1.2.3.0/24"
Subnet.new('2001:db8::ff00:12:0/112'):getCIDR() -- "2001:db8::ff00:12:0/112"
Subnet.new('2001:db8:0:0:0:0:0:0/112'):getCIDR() -- "2001:db8::/112"
getVersion
[sunting sumber]subnet:getVersion()
Returns the version of the IP protocol being used. This is "IPv4" for IPv4 addresses, and "IPv6" for IPv6 addresses.
Examples:
Subnet.new('1.2.3.0/24'):getVersion() -- "IPv4"
Subnet.new('2001:db8::ff00:12:0/112'):getVersion() -- "IPv6"
isIPv4
[sunting sumber]subnet:isIPv4()
Returns true if the subnet is using IPv4, and false otherwise.
Examples:
Subnet.new('1.2.3.0/24'):isIPv4() -- true
Subnet.new('2001:db8::ff00:12:0/112'):isIPv4() -- false
isIPv6
[sunting sumber]subnet:isIPv6()
Returns true if the subnet is using IPv6, and false otherwise.
Examples:
Subnet.new('1.2.3.0/24'):isIPv6() -- false
Subnet.new('2001:db8::ff00:12:0/112'):isIPv6() -- true
containsIP
[sunting sumber]subnet:containsIP(ip)
Returns true if the subnet contains the IP address ip, and false otherwise. ip can be an IP address string, or an IPAddress object.
Examples:
Subnet.new('1.2.3.0/24'):containsIP('1.2.3.4') -- true
Subnet.new('1.2.3.0/24'):containsIP('1.2.4.4') -- false
Subnet.new('1.2.3.0/24'):containsIP(IPAddress.new('1.2.3.4')) -- true
Subnet.new('2001:db8::ff00:12:0/112'):containsIP('2001:db8::ff00:12:3456') -- true
overlapsSubnet
[sunting sumber]subnet:overlapsSubnet(subnet)
Returns true if the current subnet overlaps with subnet, and false otherwise. subnet can be a CIDR string or a subnet object.
Examples:
Subnet.new('1.2.3.0/24'):overlapsSubnet('1.2.0.0/16') -- true
Subnet.new('1.2.3.0/24'):overlapsSubnet('1.2.12.0/22') -- false
Subnet.new('1.2.3.0/24'):overlapsSubnet(Subnet.new('1.2.0.0/16')) -- true
Subnet.new('2001:db8::ff00:12:0/112'):overlapsSubnet('2001:db8::ff00:0:0/96') -- true
walk
[sunting sumber]subnet:walk()
The walk method iterates over all of the IPAddress objects in the subnet.
Examples:
for ipAddress in Subnet.new('192.168.0.0/30'):walk() do
mw.log(tostring(ipAddress))
end
-- 192.168.0.0
-- 192.168.0.1
-- 192.168.0.2
-- 192.168.0.3
IPv4Collection
[sunting sumber]The IPv4Collection class is used to work with several different IPv4 addresses and IPv4 subnets. To create a new IPv4Collection object:
local collection = IPv4Collection.new()
IPv4Collection objects have several methods, outlined below.
getVersion
[sunting sumber]collection:getVersion()
Returns the string "IPv4".
addIP
[sunting sumber]collection:addIP(ip)
Adds an IP to the collection. The IP can be either a string or an IPAddress object.
Examples:
collection:addIP('1.2.3.4')
collection:addIP(IPAddress.new('1.2.3.4'))
This method is chainable:
collection:addIP('1.2.3.4'):addIP('5.6.7.8')
addSubnet
[sunting sumber]collection:addSubnet(subnet)
Adds a subnet to the collection. The subnet can be either a CIDR string or a Subnet object.
Examples:
collection:addSubnet('1.2.3.0/24')
collection:addSubnet(Subnet.new('1.2.3.0/24'))
This method is chainable:
collection:addSubnet('1.2.0.0/24'):addSubnet('1.2.1.0/24')
addFromString
[sunting sumber]collection:addFromString(str)
Extracts any IPv4 addresses and IPv4 CIDR subnets from str and adds them to the collection. Any text that is not an IPv4 address or CIDR subnet is ignored.
Examples:
collection:addFromString('Add some IPs and subnets: 1.2.3.4 1.2.3.5 2001:0::f foo 1.2.4.0/24')
This method is chainable:
collection:addFromString('foo 1.2.3.4'):addFromString('bar 5.6.7.8')
containsIP
[sunting sumber]collection:containsIP(ip)
Returns true if the collection contains the specified IP; otherwise returns false. The ip parameter can be a string or an IPAddress object.
Examples:
collection:containsIP('1.2.3.4')
collection:containsIP(IPAddress.new('1.2.3.4'))
getRanges
[sunting sumber]collection:getRanges()
Returns a sorted array of IP pairs equivalent to the collection. Each IP pair is an array representing a contiguous range of IP addresses from pair[1] to pair[2] inclusive. pair[1] and pair[2] are IPAddress objects.
Examples:
collection:addSubnet('1.2.0.0/24')
collection:addSubnet('1.2.1.0/24')
collection:addSubnet('1.2.10.0/24')
mw.logObject(collection:getRanges())
-- Logs the following:
-- table#1 {
-- table#2 {
-- 1.2.0.0,
-- 1.2.1.255,
-- },
-- table#3 {
-- 1.2.10.0,
-- 1.2.10.255,
-- },
-- }
overlapsSubnet
[sunting sumber]collection:overlapsSubnet(subnet)
Returns true, obj if subnet overlaps this collection, where obj is the first IPAddress or Subnet object overlapping the subnet. Otherwise, returns false. subnet can be a CIDR string or a Subnet object.
Examples:
collection:addIP('1.2.3.4')
collection:overlapsSubnet('1.2.3.0/24') -- true, IPAddress.new('1.2.3.4')
collection:overlapsSubnet('1.2.4.0/24') -- false
IPv6Collection
[sunting sumber]The IPv6Collection class is used to work with several different IPv6 addresses and IPv6 subnets. IPv6Collection objects are directly analagous to IPv4Collection objects: they contain the same methods and work the same way, but all IP addresses and subnets added to it must be IPv6, not IPv4.
To create a new IPv6Collection object:
local collection = IPv6Collection.new()