prosody
1d13f73af58e
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 @ 5901:1d13f73af58e

certmanager: Default to using the server's cipher preference order by default, as clients have been shown to commonly select weak and insecure ciphers even when they support stronger ones
author Matthew Wild <mwild1@gmail.com>
date Sat, 09 Nov 2013 17:50:19 +0000
parent 5597:6fe09707c73b
child 5599:34e9f237b915
child 7052:306aabf2d57d
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};
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
12 local hex2bits = { ["0"] = "0000", ["1"] = "0001", ["2"] = "0010", ["3"] = "0011", ["4"] = "0100", ["5"] = "0101", ["6"] = "0110", ["7"] = "0111", ["8"] = "1000", ["9"] = "1001", ["A"] = "1010", ["B"] = "1011", ["C"] = "1100", ["D"] = "1101", ["E"] = "1110", ["F"] = "1111" };
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
13
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
14 local function new_ip(ipStr, proto)
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
15 if proto ~= "IPv4" and proto ~= "IPv6" then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
16 return nil, "invalid protocol";
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
17 end
5597
6fe09707c73b util.ip: Convert IPv4 mapped addresses to hex.
Kim Alvefur <zash@zash.se>
parents: 5552
diff changeset
18 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
19 local changed;
6fe09707c73b util.ip: Convert IPv4 mapped addresses to hex.
Kim Alvefur <zash@zash.se>
parents: 5552
diff changeset
20 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
21 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
22 end);
6fe09707c73b util.ip: Convert IPv4 mapped addresses to hex.
Kim Alvefur <zash@zash.se>
parents: 5552
diff changeset
23 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
24 end
4419
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
25
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
26 return setmetatable({ addr = ipStr, proto = proto }, ip_mt);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
27 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
28
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
29 local function toBits(ip)
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
30 local result = "";
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
31 local fields = {};
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
32 if ip.proto == "IPv4" then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
33 ip = ip.toV4mapped;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
34 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
35 ip = (ip.addr):upper();
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
36 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
37 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
38 for i, field in ipairs(fields) do
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
39 if field:len() == 0 and i ~= 1 and i ~= #fields then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
40 for i = 1, 16 * (9 - #fields) do
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
41 result = result .. "0";
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
42 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
43 else
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
44 for i = 1, 4 - field:len() do
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
45 result = result .. "0000";
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 for i = 1, field:len() do
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
48 result = result .. hex2bits[field:sub(i,i)];
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
49 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
50 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
51 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
52 return result;
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
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
55 local function commonPrefixLength(ipA, ipB)
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
56 ipA, ipB = toBits(ipA), toBits(ipB);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
57 for i = 1, 128 do
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
58 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
59 return i-1;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
60 end
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 return 128;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
63 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
64
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
65 local function v4scope(ip)
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
66 local fields = {};
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
67 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
68 -- Loopback:
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
69 if fields[1] == 127 then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
70 return 0x2;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
71 -- Link-local unicast:
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
72 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
73 return 0x2;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
74 -- Global unicast:
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
75 else
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
76 return 0xE;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
77 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
78 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
79
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
80 local function v6scope(ip)
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
81 -- Loopback:
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
82 if ip:match("^[0:]*1$") then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
83 return 0x2;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
84 -- Link-local unicast:
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
85 elseif ip:match("^[Ff][Ee][89ABab]") then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
86 return 0x2;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
87 -- Site-local unicast:
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
88 elseif ip:match("^[Ff][Ee][CcDdEeFf]") then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
89 return 0x5;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
90 -- Multicast:
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
91 elseif ip:match("^[Ff][Ff]") then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
92 return tonumber("0x"..ip:sub(4,4));
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 label(ip)
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
100 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
101 return 0;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
102 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
103 return 2;
5552
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
104 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
105 return 5;
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
106 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
107 return 13;
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
108 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
109 return 11;
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
110 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
111 return 12;
4419
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
112 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
113 return 3;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
114 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
115 return 4;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
116 else
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
117 return 1;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
118 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
119 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
120
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
121 local function precedence(ip)
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
122 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
123 return 50;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
124 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
125 return 30;
5552
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
126 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
127 return 5;
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
128 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
129 return 3;
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
130 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
131 return 1;
40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724
Florian Zeitz <florob@babelmonkeys.de>
parents: 4433
diff changeset
132 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
133 return 1;
4419
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
134 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
135 return 1;
4419
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
136 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
137 return 35;
4419
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
138 else
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
139 return 40;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
140 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
141 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
142
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
143 local function toV4mapped(ip)
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
144 local fields = {};
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
145 local ret = "::ffff:";
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
146 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
147 ret = ret .. ("%02x"):format(fields[1]);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
148 ret = ret .. ("%02x"):format(fields[2]);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
149 ret = ret .. ":"
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
150 ret = ret .. ("%02x"):format(fields[3]);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
151 ret = ret .. ("%02x"):format(fields[4]);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
152 return new_ip(ret, "IPv6");
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
153 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
154
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
155 function ip_methods:toV4mapped()
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
156 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
157 local value = toV4mapped(self.addr);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
158 self.toV4mapped = value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
159 return value;
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 function ip_methods:label()
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
163 local value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
164 if self.proto == "IPv4" then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
165 value = label(self.toV4mapped);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
166 else
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
167 value = label(self);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
168 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
169 self.label = value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
170 return value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
171 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
172
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
173 function ip_methods:precedence()
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
174 local value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
175 if self.proto == "IPv4" then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
176 value = precedence(self.toV4mapped);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
177 else
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
178 value = precedence(self);
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 self.precedence = value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
181 return value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
182 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
183
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
184 function ip_methods:scope()
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
185 local value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
186 if self.proto == "IPv4" then
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
187 value = v4scope(self.addr);
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
188 else
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
189 value = v6scope(self.addr);
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 self.scope = value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
192 return value;
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
193 end
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
194
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
195 return {new_ip = new_ip,
b1e49cc314cb util.ip: New module containing IP related functions
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
196 commonPrefixLength = commonPrefixLength};