Software `/` code `/` prosody

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util/ip.lua @ 12482:b193f8a2737e

mod_tls: Do not offer TLS if the connection is considered secure This may be necessary if the session.conn object is not exchanged by the network backend when establishing TLS. In that case, the starttls method will always exist and thus that is not a good indicator for offering TLS. However, the secure bit already tells us that TLS has been established or is not to be established on the connection, so we use that instead.

author	Jonas Schäfer <jonas@wielicki.name>
date	Fri, 17 Sep 2021 21:18:30 +0200
parent	12355:a0ff5c438e9d
child	12931:bbae3acc6694

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
8430 a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	8 local net = require "util.net";
8432 da807f4f706c util.ip: Simplify bitstring method Kim Alvefur <zash@zash.se> parents: 8431 diff changeset	9 local hex = require "util.hex";
8430 a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	10
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	11 local ip_methods = {};
8428 ca44e462322c util.ip: Reflow metatable Kim Alvefur <zash@zash.se> parents: 8382 diff changeset	12
ca44e462322c util.ip: Reflow metatable Kim Alvefur <zash@zash.se> parents: 8382 diff changeset	13 local ip_mt = {
ca44e462322c util.ip: Reflow metatable Kim Alvefur <zash@zash.se> parents: 8382 diff changeset	14 __index = function (ip, key)
8436 ab9ddfb03d4d util.ip: Cache return values of all methods in one place Kim Alvefur <zash@zash.se> parents: 8435 diff changeset	15 local method = ip_methods[key];
ab9ddfb03d4d util.ip: Cache return values of all methods in one place Kim Alvefur <zash@zash.se> parents: 8435 diff changeset	16 if not method then return nil; end
ab9ddfb03d4d util.ip: Cache return values of all methods in one place Kim Alvefur <zash@zash.se> parents: 8435 diff changeset	17 local ret = method(ip);
ab9ddfb03d4d util.ip: Cache return values of all methods in one place Kim Alvefur <zash@zash.se> parents: 8435 diff changeset	18 ip[key] = ret;
ab9ddfb03d4d util.ip: Cache return values of all methods in one place Kim Alvefur <zash@zash.se> parents: 8435 diff changeset	19 return ret;
8428 ca44e462322c util.ip: Reflow metatable Kim Alvefur <zash@zash.se> parents: 8382 diff changeset	20 end,
ca44e462322c util.ip: Reflow metatable Kim Alvefur <zash@zash.se> parents: 8382 diff changeset	21 __tostring = function (ip) return ip.addr; end,
ca44e462322c util.ip: Reflow metatable Kim Alvefur <zash@zash.se> parents: 8382 diff changeset	22 };
10593 079b31c8dbf2 util.ip: Fix equality metamethod for Lua 5.3 Kim Alvefur <zash@zash.se> parents: 9955 diff changeset	23 ip_mt.__eq = function (ipA, ipB)
079b31c8dbf2 util.ip: Fix equality metamethod for Lua 5.3 Kim Alvefur <zash@zash.se> parents: 9955 diff changeset	24 if getmetatable(ipA) ~= ip_mt or getmetatable(ipB) ~= ip_mt then
079b31c8dbf2 util.ip: Fix equality metamethod for Lua 5.3 Kim Alvefur <zash@zash.se> parents: 9955 diff changeset	25 -- Lua 5.3+ calls this if both operands are tables, even if metatables differ
079b31c8dbf2 util.ip: Fix equality metamethod for Lua 5.3 Kim Alvefur <zash@zash.se> parents: 9955 diff changeset	26 return false;
079b31c8dbf2 util.ip: Fix equality metamethod for Lua 5.3 Kim Alvefur <zash@zash.se> parents: 9955 diff changeset	27 end
079b31c8dbf2 util.ip: Fix equality metamethod for Lua 5.3 Kim Alvefur <zash@zash.se> parents: 9955 diff changeset	28 return ipA.packed == ipB.packed;
079b31c8dbf2 util.ip: Fix equality metamethod for Lua 5.3 Kim Alvefur <zash@zash.se> parents: 9955 diff changeset	29 end
8428 ca44e462322c util.ip: Reflow metatable Kim Alvefur <zash@zash.se> parents: 8382 diff changeset	30
8382 e5d00bf4a4d5 util: Various minor changes to please [luacheck] Kim Alvefur <zash@zash.se> parents: 7486 diff changeset	31 local hex2bits = {
e5d00bf4a4d5 util: Various minor changes to please [luacheck] Kim Alvefur <zash@zash.se> parents: 7486 diff changeset	32 ["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	33 ["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	34 ["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	35 ["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	36 };
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	37
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	38 local function new_ip(ipStr, proto)
8430 a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	39 local zone;
a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	40 if (not proto or proto == "IPv6") and ipStr:find('%', 1, true) then
a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	41 ipStr, zone = ipStr:match("^(.-)%%(.*)");
a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	42 end
a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	43
a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	44 local packed, err = net.pton(ipStr);
a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	45 if not packed then return packed, err end
a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	46 if proto == "IPv6" and #packed ~= 16 then
a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	47 return nil, "invalid-ipv6";
a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	48 elseif proto == "IPv4" and #packed ~= 4 then
a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	49 return nil, "invalid-ipv4";
a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	50 elseif not proto then
a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	51 if #packed == 16 then
a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	52 proto = "IPv6";
a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	53 elseif #packed == 4 then
a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	54 proto = "IPv4";
a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	55 else
a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	56 return nil, "unknown protocol";
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	57 end
8430 a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	58 elseif proto ~= "IPv6" and proto ~= "IPv4" then
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	59 return nil, "invalid protocol";
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
8430 a58d560aa8d5 util.ip: Parse IP address using inet_pton Kim Alvefur <zash@zash.se> parents: 8429 diff changeset	62 return setmetatable({ addr = ipStr, packed = packed, proto = proto, zone = zone }, ip_mt);
4419 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
8433 ca7f8e60410a util.ip: Add a method returning a normalized IP address Kim Alvefur <zash@zash.se> parents: 8432 diff changeset	65 function ip_methods:normal()
ca7f8e60410a util.ip: Add a method returning a normalized IP address Kim Alvefur <zash@zash.se> parents: 8432 diff changeset	66 return net.ntop(self.packed);
ca7f8e60410a util.ip: Add a method returning a normalized IP address Kim Alvefur <zash@zash.se> parents: 8432 diff changeset	67 end
ca7f8e60410a util.ip: Add a method returning a normalized IP address Kim Alvefur <zash@zash.se> parents: 8432 diff changeset	68
8431 a5a03d40a20c util.ip: Make bit string function into a method Kim Alvefur <zash@zash.se> parents: 8430 diff changeset	69 function ip_methods.bits(ip)
12355 a0ff5c438e9d util.hex: Deprecate to/from in favour of encode/decode, for consistency! Matthew Wild <mwild1@gmail.com> parents: 11650 diff changeset	70 return hex.encode(ip.packed):upper():gsub(".", hex2bits);
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	71 end
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	72
8431 a5a03d40a20c util.ip: Make bit string function into a method Kim Alvefur <zash@zash.se> parents: 8430 diff changeset	73 function ip_methods.bits_full(ip)
a5a03d40a20c util.ip: Make bit string function into a method Kim Alvefur <zash@zash.se> parents: 8430 diff changeset	74 if ip.proto == "IPv4" then
a5a03d40a20c util.ip: Make bit string function into a method Kim Alvefur <zash@zash.se> parents: 8430 diff changeset	75 ip = ip.toV4mapped;
a5a03d40a20c util.ip: Make bit string function into a method Kim Alvefur <zash@zash.se> parents: 8430 diff changeset	76 end
a5a03d40a20c util.ip: Make bit string function into a method Kim Alvefur <zash@zash.se> parents: 8430 diff changeset	77 return ip.bits;
a5a03d40a20c util.ip: Make bit string function into a method Kim Alvefur <zash@zash.se> parents: 8430 diff changeset	78 end
a5a03d40a20c util.ip: Make bit string function into a method Kim Alvefur <zash@zash.se> parents: 8430 diff changeset	79
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	80 local match;
47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	81
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	82 local function commonPrefixLength(ipA, ipB)
8431 a5a03d40a20c util.ip: Make bit string function into a method Kim Alvefur <zash@zash.se> parents: 8430 diff changeset	83 ipA, ipB = ipA.bits_full, ipB.bits_full;
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	84 for i = 1, 128 do
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	85 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	86 return i-1;
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	87 end
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	88 end
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	89 return 128;
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	90 end
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	91
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	92 -- Instantiate once
47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	93 local loopback = new_ip("::1");
47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	94 local loopback4 = new_ip("127.0.0.0");
47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	95 local sixtofour = new_ip("2002::");
47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	96 local teredo = new_ip("2001::");
47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	97 local linklocal = new_ip("fe80::");
47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	98 local linklocal4 = new_ip("169.254.0.0");
47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	99 local uniquelocal = new_ip("fc00::");
47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	100 local sitelocal = new_ip("fec0::");
47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	101 local sixbone = new_ip("3ffe::");
47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	102 local defaultunicast = new_ip("::");
47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	103 local multicast = new_ip("ff00::");
47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	104 local ipv6mapped = new_ip("::ffff:0:0");
47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	105
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	106 local function v4scope(ip)
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	107 if match(ip, loopback4, 8) then
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	108 return 0x2;
11649 aa119de5f6c7 util.ip: Fix netmask for link-local address range Kim Alvefur <zash@zash.se> parents: 9955 diff changeset	109 elseif match(ip, linklocal4, 16) then
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	110 return 0x2;
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	111 else -- Global unicast
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	112 return 0xE;
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	113 end
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	114 end
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	115
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	116 local function v6scope(ip)
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	117 if ip == loopback then
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	118 return 0x2;
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	119 elseif match(ip, linklocal, 10) then
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	120 return 0x2;
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	121 elseif match(ip, sitelocal, 10) then
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	122 return 0x5;
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	123 elseif match(ip, multicast, 10) then
47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	124 return ip.packed:byte(2) % 0x10;
47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	125 else -- Global unicast
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	126 return 0xE;
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	127 end
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	128 end
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	129
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	130 local function label(ip)
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	131 if ip == loopback then
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	132 return 0;
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	133 elseif match(ip, sixtofour, 16) then
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	134 return 2;
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	135 elseif match(ip, teredo, 32) then
5552 40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724 Florian Zeitz <florob@babelmonkeys.de> parents: 4433 diff changeset	136 return 5;
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	137 elseif match(ip, uniquelocal, 7) then
5552 40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724 Florian Zeitz <florob@babelmonkeys.de> parents: 4433 diff changeset	138 return 13;
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	139 elseif match(ip, sitelocal, 10) then
5552 40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724 Florian Zeitz <florob@babelmonkeys.de> parents: 4433 diff changeset	140 return 11;
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	141 elseif match(ip, sixbone, 16) then
5552 40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724 Florian Zeitz <florob@babelmonkeys.de> parents: 4433 diff changeset	142 return 12;
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	143 elseif match(ip, defaultunicast, 96) then
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	144 return 3;
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	145 elseif match(ip, ipv6mapped, 96) then
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	146 return 4;
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	147 else
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	148 return 1;
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	149 end
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	150 end
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	151
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	152 local function precedence(ip)
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	153 if ip == loopback then
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	154 return 50;
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	155 elseif match(ip, sixtofour, 16) then
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	156 return 30;
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	157 elseif match(ip, teredo, 32) then
5552 40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724 Florian Zeitz <florob@babelmonkeys.de> parents: 4433 diff changeset	158 return 5;
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	159 elseif match(ip, uniquelocal, 7) then
5552 40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724 Florian Zeitz <florob@babelmonkeys.de> parents: 4433 diff changeset	160 return 3;
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	161 elseif match(ip, sitelocal, 10) then
5552 40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724 Florian Zeitz <florob@babelmonkeys.de> parents: 4433 diff changeset	162 return 1;
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	163 elseif match(ip, sixbone, 16) then
5552 40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724 Florian Zeitz <florob@babelmonkeys.de> parents: 4433 diff changeset	164 return 1;
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	165 elseif match(ip, defaultunicast, 96) then
5552 40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724 Florian Zeitz <florob@babelmonkeys.de> parents: 4433 diff changeset	166 return 1;
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	167 elseif match(ip, ipv6mapped, 96) then
5552 40e7a6cf15ff util.rfc{3484,6724}: Update to RFC 6724 Florian Zeitz <florob@babelmonkeys.de> parents: 4433 diff changeset	168 return 35;
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	169 else
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	170 return 40;
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 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
8434 ec8f37baffaa util.ip: Simplify creation of IPv6-mapped IPv4 addresses Kim Alvefur <zash@zash.se> parents: 8433 diff changeset	176 local value = new_ip("::ffff:" .. self.normal);
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	177 return value;
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	178 end
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	179
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	180 function ip_methods:label()
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	181 if self.proto == "IPv4" then
8469 52d48cea1f60 util.ip: Remove redundant caching of method output (supposed to be done in ab9ddfb03d4d but lost somehow) Kim Alvefur <zash@zash.se> parents: 8468 diff changeset	182 return label(self.toV4mapped);
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	183 else
8469 52d48cea1f60 util.ip: Remove redundant caching of method output (supposed to be done in ab9ddfb03d4d but lost somehow) Kim Alvefur <zash@zash.se> parents: 8468 diff changeset	184 return label(self);
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	185 end
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	186 end
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	187
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	188 function ip_methods:precedence()
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	189 if self.proto == "IPv4" then
8469 52d48cea1f60 util.ip: Remove redundant caching of method output (supposed to be done in ab9ddfb03d4d but lost somehow) Kim Alvefur <zash@zash.se> parents: 8468 diff changeset	190 return precedence(self.toV4mapped);
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	191 else
8469 52d48cea1f60 util.ip: Remove redundant caching of method output (supposed to be done in ab9ddfb03d4d but lost somehow) Kim Alvefur <zash@zash.se> parents: 8468 diff changeset	192 return precedence(self);
4419 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 end
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	195
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	196 function ip_methods:scope()
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	197 if self.proto == "IPv4" then
8469 52d48cea1f60 util.ip: Remove redundant caching of method output (supposed to be done in ab9ddfb03d4d but lost somehow) Kim Alvefur <zash@zash.se> parents: 8468 diff changeset	198 return v4scope(self);
4419 b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	199 else
8469 52d48cea1f60 util.ip: Remove redundant caching of method output (supposed to be done in ab9ddfb03d4d but lost somehow) Kim Alvefur <zash@zash.se> parents: 8468 diff changeset	200 return v6scope(self);
4419 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 end
b1e49cc314cb util.ip: New module containing IP related functions Florian Zeitz <florob@babelmonkeys.de> parents: diff changeset	203
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	204 local rfc1918_8 = new_ip("10.0.0.0");
47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	205 local rfc1918_12 = new_ip("172.16.0.0");
47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	206 local rfc1918_16 = new_ip("192.168.0.0");
8439 293dbb08427b util.ip: Add CGNAT network range reserved in RFC 6598 Kim Alvefur <zash@zash.se> parents: 8438 diff changeset	207 local rfc6598 = new_ip("100.64.0.0");
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	208
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	209 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	210 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	211 if not private and self.proto == "IPv4" then
9955 c74c89a96cbf util.ip: Add missing netmask for 192.168/16 range (fixes #1343) Kim Alvefur <zash@zash.se> parents: 8469 diff changeset	212 return match(self, rfc1918_8, 8) or match(self, rfc1918_12, 12) or match(self, rfc1918_16, 16) or match(self, rfc6598, 10);
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	213 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	214 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	215 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	216
5603 e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching Matthew Wild <mwild1@gmail.com> parents: 5599 diff changeset	217 local function parse_cidr(cidr)
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching Matthew Wild <mwild1@gmail.com> parents: 5599 diff changeset	218 local bits;
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching Matthew Wild <mwild1@gmail.com> parents: 5599 diff changeset	219 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	220 if ip_len then
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching Matthew Wild <mwild1@gmail.com> parents: 5599 diff changeset	221 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	222 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	223 end
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching Matthew Wild <mwild1@gmail.com> parents: 5599 diff changeset	224 return new_ip(cidr), bits;
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching Matthew Wild <mwild1@gmail.com> parents: 5599 diff changeset	225 end
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching Matthew Wild <mwild1@gmail.com> parents: 5599 diff changeset	226
8435 47195f035d2f util.ip: Instantiate various addresses used for comparisons once Kim Alvefur <zash@zash.se> parents: 8434 diff changeset	227 function match(ipA, ipB, bits)
8438 499663bd0122 util.ip: Do exact match for longer bit counts than available Kim Alvefur <zash@zash.se> parents: 8437 diff changeset	228 if not bits or bits >= 128 or ipB.proto == "IPv4" and bits >= 32 then
8437 021129f7b0a3 util.ip: Do CIDR matching by comparing all bits at once instead of using O(n) function Kim Alvefur <zash@zash.se> parents: 8436 diff changeset	229 return ipA == ipB;
021129f7b0a3 util.ip: Do CIDR matching by comparing all bits at once instead of using O(n) function Kim Alvefur <zash@zash.se> parents: 8436 diff changeset	230 elseif bits < 1 then
021129f7b0a3 util.ip: Do CIDR matching by comparing all bits at once instead of using O(n) function Kim Alvefur <zash@zash.se> parents: 8436 diff changeset	231 return true;
5603 e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching Matthew Wild <mwild1@gmail.com> parents: 5599 diff changeset	232 end
8437 021129f7b0a3 util.ip: Do CIDR matching by comparing all bits at once instead of using O(n) function Kim Alvefur <zash@zash.se> parents: 8436 diff changeset	233 if ipA.proto ~= ipB.proto then
021129f7b0a3 util.ip: Do CIDR matching by comparing all bits at once instead of using O(n) function Kim Alvefur <zash@zash.se> parents: 8436 diff changeset	234 if ipA.proto == "IPv4" then
021129f7b0a3 util.ip: Do CIDR matching by comparing all bits at once instead of using O(n) function Kim Alvefur <zash@zash.se> parents: 8436 diff changeset	235 ipA = ipA.toV4mapped;
021129f7b0a3 util.ip: Do CIDR matching by comparing all bits at once instead of using O(n) function Kim Alvefur <zash@zash.se> parents: 8436 diff changeset	236 elseif ipB.proto == "IPv4" then
8468 5bfe58539b6c util.ip: Convert the correct IP to IPv6-mapped for comparison (fixes traceback, possibly invalid result) Kim Alvefur <zash@zash.se> parents: 8441 diff changeset	237 ipB = ipB.toV4mapped;
8437 021129f7b0a3 util.ip: Do CIDR matching by comparing all bits at once instead of using O(n) function Kim Alvefur <zash@zash.se> parents: 8436 diff changeset	238 bits = bits + (128 - 32);
021129f7b0a3 util.ip: Do CIDR matching by comparing all bits at once instead of using O(n) function Kim Alvefur <zash@zash.se> parents: 8436 diff changeset	239 end
021129f7b0a3 util.ip: Do CIDR matching by comparing all bits at once instead of using O(n) function Kim Alvefur <zash@zash.se> parents: 8436 diff changeset	240 end
021129f7b0a3 util.ip: Do CIDR matching by comparing all bits at once instead of using O(n) function Kim Alvefur <zash@zash.se> parents: 8436 diff changeset	241 return ipA.bits:sub(1, bits) == ipB.bits:sub(1, bits);
5603 e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching Matthew Wild <mwild1@gmail.com> parents: 5599 diff changeset	242 end
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching Matthew Wild <mwild1@gmail.com> parents: 5599 diff changeset	243
8429 b3562a1b1caa util.ip: Reflow module export table Kim Alvefur <zash@zash.se> parents: 8428 diff changeset	244 return {
b3562a1b1caa util.ip: Reflow module export table Kim Alvefur <zash@zash.se> parents: 8428 diff changeset	245 new_ip = new_ip,
5603 e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching Matthew Wild <mwild1@gmail.com> parents: 5599 diff changeset	246 commonPrefixLength = commonPrefixLength,
e07f4f02e4f9 util.ip: Add CIDR notation parsing and matching Matthew Wild <mwild1@gmail.com> parents: 5599 diff changeset	247 parse_cidr = parse_cidr,
8429 b3562a1b1caa util.ip: Reflow module export table Kim Alvefur <zash@zash.se> parents: 8428 diff changeset	248 match = match,
b3562a1b1caa util.ip: Reflow module export table Kim Alvefur <zash@zash.se> parents: 8428 diff changeset	249 };

prosody

b193f8a2737e

util/ip.lua

Software / code / prosody

Annotate

util/ip.lua @ 12482:b193f8a2737e

Software `/` code `/` prosody