prosody
e5d00bf4a4d5
util/ip.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

Annotate

util/ip.lua @ 8382:e5d00bf4a4d5

util: Various minor changes to please [luacheck]
author Kim Alvefur <zash@zash.se>
date Fri, 10 Nov 2017 05:42:32 +0100
parent 7486:c415a3fd4485
child 8428:ca44e462322c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4419
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
1 -- Prosody IM
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
2 -- Copyright (C) 2008-2011 Florian Zeitz
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
3 --
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
4 -- This project is MIT/X11 licensed. Please see the
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
5 -- COPYING file in the source package for more information.
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
6 --
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
7
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
8 local ip_methods = {};
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
9 local ip_mt = { __index = function (ip, key) return (ip_methods[key])(ip); end,
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
10 __tostring = function (ip) return ip.addr; end,
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
11 __eq = function (ipA, ipB) return ipA.addr == ipB.addr; end};
8382
e5d00bf4a4d5 util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7486
diff changeset
12 local hex2bits = {
e5d00bf4a4d5 util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7486
diff changeset
13 ["0"] = "0000", ["1"] = "0001", ["2"] = "0010", ["3"] = "0011",
e5d00bf4a4d5 util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7486
diff changeset
14 ["4"] = "0100", ["5"] = "0101", ["6"] = "0110", ["7"] = "0111",
e5d00bf4a4d5 util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7486
diff changeset
15 ["8"] = "1000", ["9"] = "1001", ["A"] = "1010", ["B"] = "1011",
e5d00bf4a4d5 util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7486
diff changeset
16 ["C"] = "1100", ["D"] = "1101", ["E"] = "1110", ["F"] = "1111",
e5d00bf4a4d5 util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7486
diff changeset
17 };
4419
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
18
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
19 local function new_ip(ipStr, proto)
7052
306aabf2d57d util.ip: Automatically determine protocol of IP address if none specified. Return error if invalid. [Backported from 0.10]
Matthew Wild <mwild1@gmail.com>
parents: 5597
diff changeset
20 if not proto then
306aabf2d57d util.ip: Automatically determine protocol of IP address if none specified. Return error if invalid. [Backported from 0.10]
Matthew Wild <mwild1@gmail.com>
parents: 5597
diff changeset
21 local sep = ipStr:match("^%x+(.)");
7053
3049137d14b6 util.ip: Fix protocol detection of IPv6 addresses beginning with : [Backported from 0.10]
Matthew Wild <mwild1@gmail.com>
parents: 7052
diff changeset
22 if sep == ":" or (not(sep) and ipStr:sub(1,1) == ":") then
3049137d14b6 util.ip: Fix protocol detection of IPv6 addresses beginning with : [Backported from 0.10]
Matthew Wild <mwild1@gmail.com>
parents: 7052
diff changeset
23 proto = "IPv6"
3049137d14b6 util.ip: Fix protocol detection of IPv6 addresses beginning with : [Backported from 0.10]
Matthew Wild <mwild1@gmail.com>
parents: 7052
diff changeset
24 elseif sep == "." then
3049137d14b6 util.ip: Fix protocol detection of IPv6 addresses beginning with : [Backported from 0.10]
Matthew Wild <mwild1@gmail.com>
parents: 7052
diff changeset
25 proto = "IPv4"
7052
306aabf2d57d util.ip: Automatically determine protocol of IP address if none specified. Return error if invalid. [Backported from 0.10]
Matthew Wild <mwild1@gmail.com>
parents: 5597
diff changeset
26 end
306aabf2d57d util.ip: Automatically determine protocol of IP address if none specified. Return error if invalid. [Backported from 0.10]
Matthew Wild <mwild1@gmail.com>
parents: 5597
diff changeset
27 if not proto then
306aabf2d57d util.ip: Automatically determine protocol of IP address if none specified. Return error if invalid. [Backported from 0.10]
Matthew Wild <mwild1@gmail.com>
parents: 5597
diff changeset
28 return nil, "invalid address";
306aabf2d57d util.ip: Automatically determine protocol of IP address if none specified. Return error if invalid. [Backported from 0.10]
Matthew Wild <mwild1@gmail.com>
parents: 5597
diff changeset
29 end
306aabf2d57d util.ip: Automatically determine protocol of IP address if none specified. Return error if invalid. [Backported from 0.10]
Matthew Wild <mwild1@gmail.com>
parents: 5597
diff changeset
30 elseif proto ~= "IPv4" and proto ~= "IPv6" then
4419
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
31 return nil, "invalid protocol";
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
32 end
7055
23de70d19e77 util.ip: Support zone id syntax in IPv6 addresses
Kim Alvefur <zash@zash.se>
parents: 7053
diff changeset
33 local zone;
23de70d19e77 util.ip: Support zone id syntax in IPv6 addresses
Kim Alvefur <zash@zash.se>
parents: 7053
diff changeset
34 if proto == "IPv6" and ipStr:find('%', 1, true) then
23de70d19e77 util.ip: Support zone id syntax in IPv6 addresses
Kim Alvefur <zash@zash.se>
parents: 7053
diff changeset
35 ipStr, zone = ipStr:match("^(.-)%%(.*)");
23de70d19e77 util.ip: Support zone id syntax in IPv6 addresses
Kim Alvefur <zash@zash.se>
parents: 7053
diff changeset
36 end
5597
6fe09707c73b util.ip: Convert IPv4 mapped addresses to hex.
Kim Alvefur <zash@zash.se>
parents: 5552
diff changeset
37 if proto == "IPv6" and ipStr:find('.', 1, true) then
6fe09707c73b util.ip: Convert IPv4 mapped addresses to hex.
Kim Alvefur <zash@zash.se>
parents: 5552
diff changeset
38 local changed;
6fe09707c73b util.ip: Convert IPv4 mapped addresses to hex.
Kim Alvefur <zash@zash.se>
parents: 5552
diff changeset
39 ipStr, changed = ipStr:gsub(":(%d+)%.(%d+)%.(%d+)%.(%d+)$", function(a,b,c,d)
6fe09707c73b util.ip: Convert IPv4 mapped addresses to hex.
Kim Alvefur <zash@zash.se>
parents: 5552
diff changeset
40 return (":%04X:%04X"):format(a*256+b,c*256+d);
6fe09707c73b util.ip: Convert IPv4 mapped addresses to hex.
Kim Alvefur <zash@zash.se>
parents: 5552
diff changeset
41 end);
6fe09707c73b util.ip: Convert IPv4 mapped addresses to hex.
Kim Alvefur <zash@zash.se>
parents: 5552
diff changeset
42 if changed ~= 1 then return nil, "invalid-address"; end
6fe09707c73b util.ip: Convert IPv4 mapped addresses to hex.
Kim Alvefur <zash@zash.se>
parents: 5552
diff changeset
43 end
4419
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
44
7055
23de70d19e77 util.ip: Support zone id syntax in IPv6 addresses
Kim Alvefur <zash@zash.se>
parents: 7053
diff changeset
45 return setmetatable({ addr = ipStr, proto = proto, zone = zone }, ip_mt);
4419
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
46 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
47
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
48 local function toBits(ip)
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
49 local result = "";
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
50 local fields = {};
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
51 if ip.proto == "IPv4" then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
52 ip = ip.toV4mapped;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
53 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
54 ip = (ip.addr):upper();
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
55 ip:gsub("([^:]*):?", function (c) fields[#fields + 1] = c end);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
56 if not ip:match(":$") then fields[#fields] = nil; end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
57 for i, field in ipairs(fields) do
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
58 if field:len() == 0 and i ~= 1 and i ~= #fields then
7481
b3a864df32ef util.ip: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents: 7061
diff changeset
59 for _ = 1, 16 * (9 - #fields) do
4419
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
60 result = result .. "0";
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
61 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
62 else
7481
b3a864df32ef util.ip: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents: 7061
diff changeset
63 for _ = 1, 4 - field:len() do
4419
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
64 result = result .. "0000";
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
65 end
7486
c415a3fd4485 util.ip: rename variable (i is already defined) [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents: 7481
diff changeset
66 for j = 1, field:len() do
c415a3fd4485 util.ip: rename variable (i is already defined) [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents: 7481
diff changeset
67 result = result .. hex2bits[field:sub(j, j)];
4419
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
68 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
69 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
70 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
71 return result;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
72 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
73
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
74 local function commonPrefixLength(ipA, ipB)
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
75 ipA, ipB = toBits(ipA), toBits(ipB);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
76 for i = 1, 128 do
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
77 if ipA:sub(i,i) ~= ipB:sub(i,i) then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
78 return i-1;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
79 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
80 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
81 return 128;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
82 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
83
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
84 local function v4scope(ip)
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
85 local fields = {};
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
86 ip:gsub("([^.]*).?", function (c) fields[#fields + 1] = tonumber(c) end);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
87 -- Loopback:
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
88 if fields[1] == 127 then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
89 return 0x2;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
90 -- Link-local unicast:
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
91 elseif fields[1] == 169 and fields[2] == 254 then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
92 return 0x2;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
93 -- Global unicast:
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
94 else
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
95 return 0xE;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
96 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
97 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
98
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
99 local function v6scope(ip)
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
100 -- Loopback:
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
101 if ip:match("^[0:]*1$") then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
102 return 0x2;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
103 -- Link-local unicast:
5776
bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5608
diff changeset
104 elseif ip:match("^[Ff][Ee][89ABab]") then
4419
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
105 return 0x2;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
106 -- Site-local unicast:
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
107 elseif ip:match("^[Ff][Ee][CcDdEeFf]") then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
108 return 0x5;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
109 -- Multicast:
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
110 elseif ip:match("^[Ff][Ff]") then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
111 return tonumber("0x"..ip:sub(4,4));
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
112 -- Global unicast:
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
113 else
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
114 return 0xE;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
115 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
116 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
117
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
118 local function label(ip)
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
119 if commonPrefixLength(ip, new_ip("::1", "IPv6")) == 128 then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
120 return 0;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
121 elseif commonPrefixLength(ip, new_ip("2002::", "IPv6")) >= 16 then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
122 return 2;
5552
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
123 elseif commonPrefixLength(ip, new_ip("2001::", "IPv6")) >= 32 then
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
124 return 5;
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
125 elseif commonPrefixLength(ip, new_ip("fc00::", "IPv6")) >= 7 then
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
126 return 13;
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
127 elseif commonPrefixLength(ip, new_ip("fec0::", "IPv6")) >= 10 then
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
128 return 11;
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
129 elseif commonPrefixLength(ip, new_ip("3ffe::", "IPv6")) >= 16 then
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
130 return 12;
4419
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
131 elseif commonPrefixLength(ip, new_ip("::", "IPv6")) >= 96 then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
132 return 3;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
133 elseif commonPrefixLength(ip, new_ip("::ffff:0:0", "IPv6")) >= 96 then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
134 return 4;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
135 else
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
136 return 1;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
137 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
138 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
139
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
140 local function precedence(ip)
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
141 if commonPrefixLength(ip, new_ip("::1", "IPv6")) == 128 then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
142 return 50;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
143 elseif commonPrefixLength(ip, new_ip("2002::", "IPv6")) >= 16 then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
144 return 30;
5552
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
145 elseif commonPrefixLength(ip, new_ip("2001::", "IPv6")) >= 32 then
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
146 return 5;
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
147 elseif commonPrefixLength(ip, new_ip("fc00::", "IPv6")) >= 7 then
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
148 return 3;
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
149 elseif commonPrefixLength(ip, new_ip("fec0::", "IPv6")) >= 10 then
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
150 return 1;
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
151 elseif commonPrefixLength(ip, new_ip("3ffe::", "IPv6")) >= 16 then
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
152 return 1;
4419
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
153 elseif commonPrefixLength(ip, new_ip("::", "IPv6")) >= 96 then
5552
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
154 return 1;
4419
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
155 elseif commonPrefixLength(ip, new_ip("::ffff:0:0", "IPv6")) >= 96 then
5552
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
156 return 35;
4419
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
157 else
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
158 return 40;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
159 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
160 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
161
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
162 local function toV4mapped(ip)
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
163 local fields = {};
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
164 local ret = "::ffff:";
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
165 ip:gsub("([^.]*).?", function (c) fields[#fields + 1] = tonumber(c) end);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
166 ret = ret .. ("%02x"):format(fields[1]);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
167 ret = ret .. ("%02x"):format(fields[2]);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
168 ret = ret .. ":"
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
169 ret = ret .. ("%02x"):format(fields[3]);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
170 ret = ret .. ("%02x"):format(fields[4]);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
171 return new_ip(ret, "IPv6");
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
172 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
173
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
174 function ip_methods:toV4mapped()
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
175 if self.proto ~= "IPv4" then return nil, "No IPv4 address" end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
176 local value = toV4mapped(self.addr);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
177 self.toV4mapped = value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
178 return value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
179 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
180
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
181 function ip_methods:label()
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
182 local value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
183 if self.proto == "IPv4" then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
184 value = label(self.toV4mapped);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
185 else
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
186 value = label(self);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
187 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
188 self.label = value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
189 return value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
190 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
191
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
192 function ip_methods:precedence()
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
193 local value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
194 if self.proto == "IPv4" then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
195 value = precedence(self.toV4mapped);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
196 else
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
197 value = precedence(self);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
198 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
199 self.precedence = value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
200 return value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
201 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
202
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
203 function ip_methods:scope()
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
204 local value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
205 if self.proto == "IPv4" then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
206 value = v4scope(self.addr);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
207 else
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
208 value = v6scope(self.addr);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
209 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
210 self.scope = value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
211 return value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
212 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
213
5588
8c1a3243d16f util.ip: Add 'private' method/property to determine whether an IP address is generally expected to be internet-routeable (YMMV)
Matthew Wild <mwild1@gmail.com>
parents: 5587
diff changeset
214 function ip_methods:private()
8c1a3243d16f util.ip: Add 'private' method/property to determine whether an IP address is generally expected to be internet-routeable (YMMV)
Matthew Wild <mwild1@gmail.com>
parents: 5587
diff changeset
215 local private = self.scope ~= 0xE;
8c1a3243d16f util.ip: Add 'private' method/property to determine whether an IP address is generally expected to be internet-routeable (YMMV)
Matthew Wild <mwild1@gmail.com>
parents: 5587
diff changeset
216 if not private and self.proto == "IPv4" then
8c1a3243d16f util.ip: Add 'private' method/property to determine whether an IP address is generally expected to be internet-routeable (YMMV)
Matthew Wild <mwild1@gmail.com>
parents: 5587
diff changeset
217 local ip = self.addr;
8c1a3243d16f util.ip: Add 'private' method/property to determine whether an IP address is generally expected to be internet-routeable (YMMV)
Matthew Wild <mwild1@gmail.com>
parents: 5587
diff changeset
218 local fields = {};
8c1a3243d16f util.ip: Add 'private' method/property to determine whether an IP address is generally expected to be internet-routeable (YMMV)
Matthew Wild <mwild1@gmail.com>
parents: 5587
diff changeset
219 ip:gsub("([^.]*).?", function (c) fields[#fields + 1] = tonumber(c) end);
8c1a3243d16f util.ip: Add 'private' method/property to determine whether an IP address is generally expected to be internet-routeable (YMMV)
Matthew Wild <mwild1@gmail.com>
parents: 5587
diff changeset
220 if fields[1] == 127 or fields[1] == 10 or (fields[1] == 192 and fields[2] == 168)
8c1a3243d16f util.ip: Add 'private' method/property to determine whether an IP address is generally expected to be internet-routeable (YMMV)
Matthew Wild <mwild1@gmail.com>
parents: 5587
diff changeset
221 or (fields[1] == 172 and (fields[2] >= 16 or fields[2] <= 32)) then
8c1a3243d16f util.ip: Add 'private' method/property to determine whether an IP address is generally expected to be internet-routeable (YMMV)
Matthew Wild <mwild1@gmail.com>
parents: 5587
diff changeset
222 private = true;
8c1a3243d16f util.ip: Add 'private' method/property to determine whether an IP address is generally expected to be internet-routeable (YMMV)
Matthew Wild <mwild1@gmail.com>
parents: 5587
diff changeset
223 end
8c1a3243d16f util.ip: Add 'private' method/property to determine whether an IP address is generally expected to be internet-routeable (YMMV)
Matthew Wild <mwild1@gmail.com>
parents: 5587
diff changeset
224 end
8c1a3243d16f util.ip: Add 'private' method/property to determine whether an IP address is generally expected to be internet-routeable (YMMV)
Matthew Wild <mwild1@gmail.com>
parents: 5587
diff changeset
225 self.private = private;
8c1a3243d16f util.ip: Add 'private' method/property to determine whether an IP address is generally expected to be internet-routeable (YMMV)
Matthew Wild <mwild1@gmail.com>
parents: 5587
diff changeset
226 return private;
8c1a3243d16f util.ip: Add 'private' method/property to determine whether an IP address is generally expected to be internet-routeable (YMMV)
Matthew Wild <mwild1@gmail.com>
parents: 5587
diff changeset
227 end
8c1a3243d16f util.ip: Add 'private' method/property to determine whether an IP address is generally expected to be internet-routeable (YMMV)
Matthew Wild <mwild1@gmail.com>
parents: 5587
diff changeset
228
5603
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
229 local function parse_cidr(cidr)
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
230 local bits;
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
231 local ip_len = cidr:find("/", 1, true);
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
232 if ip_len then
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
233 bits = tonumber(cidr:sub(ip_len+1, -1));
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
234 cidr = cidr:sub(1, ip_len-1);
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
235 end
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
236 return new_ip(cidr), bits;
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
237 end
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
238
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
239 local function match(ipA, ipB, bits)
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
240 local common_bits = commonPrefixLength(ipA, ipB);
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
241 if bits and ipB.proto == "IPv4" then
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
242 common_bits = common_bits - 96; -- v6 mapped addresses always share these bits
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
243 end
6926
d96b2aa7a11d util.ip: Improve comparison, == doesn't necessarily handle IPv6 addresses correctly if they aren't normalized (case, ::, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
244 return common_bits >= (bits or 128);
5603
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
245 end
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
246
4419
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
247 return {new_ip = new_ip,
5603
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
248 commonPrefixLength = commonPrefixLength,
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
249 parse_cidr = parse_cidr,
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching
Matthew Wild <mwild1@gmail.com>
parents: 5599
diff changeset
250 match=match};