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mod_net_proxy/mod_net_proxy.lua @ 2968:569b98d6fca1

mod_http_logging: Be robust against missing connection object

author	Kim Alvefur <zash@zash.se>
date	Fri, 30 Mar 2018 13:37:39 +0200
parent	2963:504bb330e910
child	2975:7eb6fa9b03fd

rev	line source
2930 9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	1 -- mod_net_proxy.lua
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	2 -- Copyright (C) 2018 Pascal Mathis <mail@pascalmathis.com>
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	3 --
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	4 -- Implementation of PROXY protocol versions 1 and 2
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	5 -- Specifications: https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	6
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	7 module:set_global();
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	8
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	9 -- Imports
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	10 local softreq = require "util.dependencies".softreq;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	11 local bit = assert(softreq "bit" or softreq "bit32", "No bit module found. See https://prosody.im/doc/depends#bitop");
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	12 local hex = require "util.hex";
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	13 local ip = require "util.ip";
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	14 local net = require "util.net";
2961 33227efa2cdc mod_net_proxy: Automatically listen on all mapped ports if proxy_ports was not configured Pascal Mathis <mail@pascalmathis.com> parents: 2935 diff changeset	15 local set = require "util.set";
2930 9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	16 local portmanager = require "core.portmanager";
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	17
2931 e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	18 -- Backwards Compatibility
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	19 local function net_ntop_bc(input)
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	20 if input:len() == 4 then
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	21 return string.format("%d.%d.%d.%d", input:byte(1, 4));
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	22 elseif input:len() == 16 then
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	23 local octets = { nil, nil, nil, nil, nil, nil, nil, nil };
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	24
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	25 -- Convert received bytes into IPv6 address and skip leading zeroes for each group
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	26 for index = 1, 8 do
2935 7319fd5dbc89 mod_net_proxy: Fixed luacheck warnings Pascal Mathis <mail@pascalmathis.com> parents: 2931 diff changeset	27 local high, low = input:byte(index * 2 - 1, index * 2);
2931 e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	28 octets[index] = string.format("%x", high * 256 + low);
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	29 end
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	30 local address = table.concat(octets, ":", 1, 8);
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	31
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	32 -- Search for the longest sequence of zeroes
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	33 local token;
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	34 local length = (address:match("^0:[0:]+()") or 1) - 1;
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	35 for s in address:gmatch(":0:[0:]+") do
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	36 if length < #s then
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	37 length, token = #s, s;
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	38 end
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	39 end
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	40
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	41 -- Return the shortened IPv6 address
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	42 return address:gsub(token or "^0:[0:]+", "::", 1);
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	43 end
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	44 end
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	45
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	46 local net_ntop = net.ntop or net_ntop_bc
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	47
2930 9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	48 -- Utility Functions
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	49 local function _table_invert(input)
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	50 local output = {};
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	51 for key, value in pairs(input) do
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	52 output[value] = key;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	53 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	54 return output;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	55 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	56
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	57 -- Constants
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	58 local ADDR_FAMILY = { UNSPEC = 0x0, INET = 0x1, INET6 = 0x2, UNIX = 0x3 };
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	59 local ADDR_FAMILY_STR = _table_invert(ADDR_FAMILY);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	60 local TRANSPORT = { UNSPEC = 0x0, STREAM = 0x1, DGRAM = 0x2 };
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	61 local TRANSPORT_STR = _table_invert(TRANSPORT);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	62
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	63 local PROTO_MAX_HEADER_LENGTH = 256;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	64 local PROTO_HANDLERS = {
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	65 PROXYv1 = { signature = hex.from("50524F5859"), callback = nil },
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	66 PROXYv2 = { signature = hex.from("0D0A0D0A000D0A515549540A"), callback = nil }
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	67 };
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	68 local PROTO_HANDLER_STATUS = { SUCCESS = 0, POSTPONE = 1, FAILURE = 2 };
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	69
2963 504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	70 -- Configuration Variables
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	71 local config_mappings = module:get_option("proxy_port_mappings", {});
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	72 local config_ports = module:get_option_set("proxy_ports", {});
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	73 local config_trusted_proxies = module:get_option_set("proxy_trusted_proxies", {"127.0.0.1", "::1"});
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	74
2930 9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	75 -- Persistent In-Memory Storage
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	76 local sessions = {};
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	77 local mappings = {};
2963 504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	78 local trusted_networks = set.new();
2930 9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	79
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	80 -- Proxy Data Methods
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	81 local proxy_data_mt = {}; proxy_data_mt.__index = proxy_data_mt;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	82
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	83 function proxy_data_mt:describe()
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	84 return string.format("proto=%s/%s src=%s:%d dst=%s:%d",
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	85 self:addr_family_str(), self:transport_str(), self:src_addr(), self:src_port(), self:dst_addr(), self:dst_port());
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	86 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	87
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	88 function proxy_data_mt:addr_family_str()
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	89 return ADDR_FAMILY_STR[self._addr_family] or ADDR_FAMILY_STR[ADDR_FAMILY.UNSPEC];
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	90 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	91
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	92 function proxy_data_mt:transport_str()
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	93 return TRANSPORT_STR[self._transport] or TRANSPORT_STR[TRANSPORT.UNSPEC];
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	94 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	95
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	96 function proxy_data_mt:version()
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	97 return self._version;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	98 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	99
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	100 function proxy_data_mt:addr_family()
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	101 return self._addr_family;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	102 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	103
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	104 function proxy_data_mt:transport()
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	105 return self._transport;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	106 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	107
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	108 function proxy_data_mt:src_addr()
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	109 return self._src_addr;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	110 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	111
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	112 function proxy_data_mt:src_port()
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	113 return self._src_port;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	114 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	115
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	116 function proxy_data_mt:dst_addr()
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	117 return self._dst_addr;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	118 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	119
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	120 function proxy_data_mt:dst_port()
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	121 return self._dst_port;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	122 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	123
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	124 -- Protocol Handler Functions
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	125 PROTO_HANDLERS["PROXYv1"].callback = function(conn, session)
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	126 local addr_family_mappings = { TCP4 = ADDR_FAMILY.INET, TCP6 = ADDR_FAMILY.INET6 };
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	127
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	128 -- Postpone processing if CRLF (PROXYv1 header terminator) does not exist within buffer
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	129 if session.buffer:find("\r\n") == nil then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	130 return PROTO_HANDLER_STATUS.POSTPONE, nil;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	131 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	132
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	133 -- Declare header pattern and match current buffer against pattern
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	134 local header_pattern = "^PROXY (%S+) (%S+) (%S+) (%d+) (%d+)\r\n";
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	135 local addr_family, src_addr, dst_addr, src_port, dst_port = session.buffer:match(header_pattern);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	136 src_port, dst_port = tonumber(src_port), tonumber(dst_port);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	137
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	138 -- Ensure that header was successfully parsed and contains a valid address family
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	139 if addr_family == nil or src_addr == nil or dst_addr == nil or src_port == nil or dst_port == nil then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	140 module:log("warn", "Received unparseable PROXYv1 header from %s", conn:ip());
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	141 return PROTO_HANDLER_STATUS.FAILURE, nil;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	142 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	143 if addr_family_mappings[addr_family] == nil then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	144 module:log("warn", "Received invalid PROXYv1 address family from %s: %s", conn:ip(), addr_family);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	145 return PROTO_HANDLER_STATUS.FAILURE, nil;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	146 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	147
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	148 -- Ensure that received source and destination ports are within 1 and 65535 (0xFFFF)
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	149 if src_port <= 0 or src_port >= 0xFFFF then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	150 module:log("warn", "Received invalid PROXYv1 source port from %s: %d", conn:ip(), src_port);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	151 return PROTO_HANDLER_STATUS.FAILURE, nil;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	152 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	153 if dst_port <= 0 or dst_port >= 0xFFFF then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	154 module:log("warn", "Received invalid PROXYv1 destination port from %s: %d", conn:ip(), dst_port);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	155 return PROTO_HANDLER_STATUS.FAILURE, nil;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	156 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	157
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	158 -- Ensure that received source and destination address can be parsed
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	159 local _, err = ip.new_ip(src_addr);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	160 if err ~= nil then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	161 module:log("warn", "Received unparseable PROXYv1 source address from %s: %s", conn:ip(), src_addr);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	162 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	163 _, err = ip.new_ip(dst_addr);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	164 if err ~= nil then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	165 module:log("warn", "Received unparseable PROXYv1 destination address from %s: %s", conn:ip(), dst_addr);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	166 return PROTO_HANDLER_STATUS.FAILURE, nil;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	167 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	168
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	169 -- Strip parsed header from session buffer and build proxy data
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	170 session.buffer = session.buffer:gsub(header_pattern, "");
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	171
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	172 local proxy_data = {
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	173 _version = 1,
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	174 _addr_family = addr_family, _transport = TRANSPORT.STREAM,
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	175 _src_addr = src_addr, _src_port = src_port,
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	176 _dst_addr = dst_addr, _dst_port = dst_port
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	177 };
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	178 setmetatable(proxy_data, proxy_data_mt);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	179
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	180 -- Return successful response with gathered proxy data
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	181 return PROTO_HANDLER_STATUS.SUCCESS, proxy_data;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	182 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	183
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	184 PROTO_HANDLERS["PROXYv2"].callback = function(conn, session)
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	185 -- Postpone processing if less than 16 bytes are available
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	186 if #session.buffer < 16 then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	187 return PROTO_HANDLER_STATUS.POSTPONE, nil;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	188 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	189
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	190 -- Parse first 16 bytes of protocol header
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	191 local version = bit.rshift(bit.band(session.buffer:byte(13), 0xF0), 4);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	192 local command = bit.band(session.buffer:byte(13), 0x0F);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	193 local addr_family = bit.rshift(bit.band(session.buffer:byte(14), 0xF0), 4);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	194 local transport = bit.band(session.buffer:byte(14), 0x0F);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	195 local length = bit.bor(session.buffer:byte(16), bit.lshift(session.buffer:byte(15), 8));
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	196
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	197 -- Postpone processing if less than 16+<length> bytes are available
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	198 if #session.buffer < 16 + length then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	199 return PROTO_HANDLER_STATUS.POSTPONE, nil;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	200 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	201
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	202 -- Ensure that version number is correct
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	203 if version ~= 0x2 then
2962 6b01600b9c02 mod_net_proxy: Adjusted log level of errors triggered by remote connections to 'warn' Pascal Mathis <mail@pascalmathis.com> parents: 2961 diff changeset	204 module:log("warn", "Received unsupported PROXYv2 version from %s: %d", conn:ip(), version);
2930 9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	205 return PROTO_HANDLER_STATUS.FAILURE, nil;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	206 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	207
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	208 local payload = session.buffer:sub(17);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	209 if command == 0x0 then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	210 -- Gather source/destination addresses and ports from local socket
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	211 local src_addr, src_port = conn:socket():getpeername();
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	212 local dst_addr, dst_port = conn:socket():getsockname();
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	213
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	214 -- Build proxy data based on real connection information
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	215 local proxy_data = {
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	216 _version = version,
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	217 _addr_family = addr_family, _transport = transport,
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	218 _src_addr = src_addr, _src_port = src_port,
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	219 _dst_addr = dst_addr, _dst_port = dst_port
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	220 };
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	221 setmetatable(proxy_data, proxy_data_mt);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	222
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	223 -- Return successful response with gathered proxy data
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	224 return PROTO_HANDLER_STATUS.SUCCESS, proxy_data;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	225 elseif command == 0x1 then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	226 local offset = 1;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	227 local src_addr, src_port, dst_addr, dst_port;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	228
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	229 -- Verify transport protocol is either STREAM or DGRAM
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	230 if transport ~= TRANSPORT.STREAM and transport ~= TRANSPORT.DGRAM then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	231 module:log("warn", "Received unsupported PROXYv2 transport from %s: 0x%02X", conn:ip(), transport);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	232 return PROTO_HANDLER_STATUS.FAILURE, nil;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	233 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	234
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	235 -- Parse source and destination addresses
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	236 if addr_family == ADDR_FAMILY.INET then
2931 e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	237 src_addr = net_ntop(payload:sub(offset, offset + 3)); offset = offset + 4;
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	238 dst_addr = net_ntop(payload:sub(offset, offset + 3)); offset = offset + 4;
2930 9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	239 elseif addr_family == ADDR_FAMILY.INET6 then
2931 e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	240 src_addr = net_ntop(payload:sub(offset, offset + 15)); offset = offset + 16;
e79b9a55aa2e mod_net_proxy: Fixed backwards compatibility to Prosody 0.10 Pascal Mathis <mail@pascalmathis.com> parents: 2930 diff changeset	241 dst_addr = net_ntop(payload:sub(offset, offset + 15)); offset = offset + 16;
2930 9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	242 elseif addr_family == ADDR_FAMILY.UNIX then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	243 src_addr = payload:sub(offset, offset + 107); offset = offset + 108;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	244 dst_addr = payload:sub(offset, offset + 107); offset = offset + 108;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	245 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	246
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	247 -- Parse source and destination ports
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	248 if addr_family == ADDR_FAMILY.INET or addr_family == ADDR_FAMILY.INET6 then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	249 src_port = bit.bor(payload:byte(offset + 1), bit.lshift(payload:byte(offset), 8)); offset = offset + 2;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	250 -- luacheck: ignore 311
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	251 dst_port = bit.bor(payload:byte(offset + 1), bit.lshift(payload:byte(offset), 8)); offset = offset + 2;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	252 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	253
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	254 -- Strip parsed header from session buffer and build proxy data
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	255 session.buffer = session.buffer:sub(17 + length);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	256
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	257 local proxy_data = {
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	258 _version = version,
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	259 _addr_family = addr_family, _transport = transport,
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	260 _src_addr = src_addr, _src_port = src_port,
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	261 _dst_addr = dst_addr, _dst_port = dst_port
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	262 };
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	263 setmetatable(proxy_data, proxy_data_mt);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	264
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	265 -- Return successful response with gathered proxy data
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	266 return PROTO_HANDLER_STATUS.SUCCESS, proxy_data;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	267 else
2962 6b01600b9c02 mod_net_proxy: Adjusted log level of errors triggered by remote connections to 'warn' Pascal Mathis <mail@pascalmathis.com> parents: 2961 diff changeset	268 module:log("warn", "Received unsupported PROXYv2 command from %s: 0x%02X", conn:ip(), command);
2930 9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	269 return PROTO_HANDLER_STATUS.FAILURE, nil;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	270 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	271 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	272
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	273 -- Wrap an existing connection with the provided proxy data. This will override several methods of the 'conn' object to
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	274 -- return the proxied source instead of the source which initiated the TCP connection. Afterwards, the listener of the
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	275 -- connection gets set according to the globally defined port<>service mappings and the methods 'onconnect' and
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	276 -- 'onincoming' are being called manually with the current session buffer.
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	277 local function wrap_proxy_connection(conn, session, proxy_data)
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	278 -- Override and add functions of 'conn' object when source information has been collected
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	279 conn.proxyip, conn.proxyport = conn.ip, conn.port;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	280 if proxy_data:src_addr() ~= nil and proxy_data:src_port() ~= nil then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	281 conn.ip = function()
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	282 return proxy_data:src_addr();
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	283 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	284 conn.port = function()
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	285 return proxy_data:src_port();
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	286 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	287 conn.clientport = conn.port;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	288 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	289
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	290 -- Attempt to find service by processing port<>service mappings
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	291 local mapping = mappings[conn:serverport()];
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	292 if mapping == nil then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	293 conn:close();
2962 6b01600b9c02 mod_net_proxy: Adjusted log level of errors triggered by remote connections to 'warn' Pascal Mathis <mail@pascalmathis.com> parents: 2961 diff changeset	294 module:log("warn", "Connection %s@%s terminated: Could not find mapping for port %d",
2930 9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	295 conn:ip(), conn:proxyip(), conn:serverport());
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	296 return;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	297 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	298
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	299 if mapping.service == nil then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	300 local service = portmanager.get_service(mapping.service_name);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	301
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	302 if service ~= nil then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	303 mapping.service = service;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	304 else
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	305 conn:close();
2962 6b01600b9c02 mod_net_proxy: Adjusted log level of errors triggered by remote connections to 'warn' Pascal Mathis <mail@pascalmathis.com> parents: 2961 diff changeset	306 module:log("warn", "Connection %s@%s terminated: Could not process mapping for unknown service %s",
2930 9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	307 conn:ip(), conn:proxyip(), mapping.service_name);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	308 return;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	309 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	310 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	311
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	312 -- Pass connection to actual service listener and simulate onconnect/onincoming callbacks
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	313 local service_listener = mapping.service.listener;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	314
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	315 module:log("info", "Passing proxied connection %s:%d to service %s", conn:ip(), conn:port(), mapping.service_name);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	316 conn:setlistener(service_listener);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	317 if service_listener.onconnect then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	318 service_listener.onconnect(conn);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	319 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	320 return service_listener.onincoming(conn, session.buffer);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	321 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	322
2963 504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	323 local function is_trusted_proxy(conn)
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	324 -- If no trusted proxies were configured, trust any incoming connection
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	325 -- While this may seem insecure, the module defaults to only trusting 127.0.0.1 and ::1
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	326 if trusted_networks:empty() then
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	327 return true;
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	328 end
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	329
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	330 -- Iterate through all trusted proxies and check for match against connected IP address
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	331 local conn_ip = ip.new_ip(conn:ip());
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	332 for trusted_network in trusted_networks:items() do
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	333 if ip.match(trusted_network.ip, conn_ip, trusted_network.cidr) then
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	334 return true;
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	335 end
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	336 end
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	337
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	338 -- Connection does not match any trusted proxy
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	339 return false;
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	340 end
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	341
2930 9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	342 -- Network Listener Methods
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	343 local listener = {};
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	344
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	345 function listener.onconnect(conn)
2963 504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	346 -- Check if connection is coming from a trusted proxy
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	347 if not is_trusted_proxy(conn) then
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	348 conn:close();
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	349 module:log("warn", "Dropped connection from untrusted proxy: %s", conn:ip());
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	350 return;
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	351 end
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	352
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	353 -- Initialize session variables
2930 9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	354 sessions[conn] = {
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	355 handler = nil;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	356 buffer = nil;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	357 };
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	358 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	359
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	360 function listener.onincoming(conn, data)
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	361 -- Abort processing if no data has been received
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	362 if not data then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	363 return;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	364 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	365
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	366 -- Lookup session for connection and append received data to buffer
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	367 local session = sessions[conn];
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	368 session.buffer = session.buffer and session.buffer .. data or data;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	369
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	370 -- Attempt to determine protocol handler if not done previously
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	371 if session.handler == nil then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	372 -- Match current session buffer against all known protocol signatures to determine protocol handler
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	373 for handler_name, handler in pairs(PROTO_HANDLERS) do
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	374 if session.buffer:find("^" .. handler.signature) ~= nil then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	375 session.handler = handler.callback;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	376 module:log("debug", "Detected %s connection from %s:%d", handler_name, conn:ip(), conn:port());
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	377 break;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	378 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	379 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	380
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	381 -- Decide between waiting for a complete header signature or terminating the connection when no handler has been found
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	382 if session.handler == nil then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	383 -- Terminate connection if buffer size has exceeded tolerable maximum size
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	384 if #session.buffer > PROTO_MAX_HEADER_LENGTH then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	385 conn:close();
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	386 module:log("warn", "Connection %s:%d terminated: No valid PROXY header within %d bytes",
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	387 conn:ip(), conn:port(), PROTO_MAX_HEADER_LENGTH);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	388 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	389
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	390 -- Skip further processing without a valid protocol handler
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	391 module:log("debug", "No valid header signature detected from %s:%d, waiting for more data...",
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	392 conn:ip(), conn:port());
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	393 return;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	394 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	395 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	396
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	397 -- Execute proxy protocol handler and process response
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	398 local response, proxy_data = session.handler(conn, session);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	399 if response == PROTO_HANDLER_STATUS.SUCCESS then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	400 module:log("info", "Received PROXY header from %s: %s", conn:ip(), proxy_data:describe());
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	401 return wrap_proxy_connection(conn, session, proxy_data);
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	402 elseif response == PROTO_HANDLER_STATUS.POSTPONE then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	403 module:log("debug", "Postponed parsing of incomplete PROXY header received from %s", conn:ip());
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	404 return;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	405 elseif response == PROTO_HANDLER_STATUS.FAILURE then
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	406 conn:close();
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	407 module:log("warn", "Connection %s terminated: Could not process PROXY header from client, " +
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	408 "see previous log messages.", conn:ip());
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	409 return;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	410 else
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	411 -- This code should be never reached, but is included for completeness
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	412 conn:close();
2962 6b01600b9c02 mod_net_proxy: Adjusted log level of errors triggered by remote connections to 'warn' Pascal Mathis <mail@pascalmathis.com> parents: 2961 diff changeset	413 module:log("warn", "Connection terminated: Received invalid protocol handler response with code %d", response);
2930 9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	414 return;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	415 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	416 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	417
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	418 function listener.ondisconnect(conn)
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	419 sessions[conn] = nil;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	420 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	421
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	422 listener.ondetach = listener.ondisconnect;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	423
2963 504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	424 -- Parse trusted proxies which can either contain single hosts or networks
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	425 if not config_trusted_proxies:empty() then
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	426 for trusted_proxy in config_trusted_proxies:items() do
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	427 local network = {};
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	428 network.ip, network.cidr = ip.parse_cidr(trusted_proxy);
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	429 trusted_networks:add(network);
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	430 end
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	431 else
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	432 module:log("warn", "No trusted proxies configured, all connections will be accepted - this might be dangerous");
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	433 end
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections Pascal Mathis <mail@pascalmathis.com> parents: 2962 diff changeset	434
2961 33227efa2cdc mod_net_proxy: Automatically listen on all mapped ports if proxy_ports was not configured Pascal Mathis <mail@pascalmathis.com> parents: 2935 diff changeset	435 -- Process all configured port mappings and generate a list of mapped ports
33227efa2cdc mod_net_proxy: Automatically listen on all mapped ports if proxy_ports was not configured Pascal Mathis <mail@pascalmathis.com> parents: 2935 diff changeset	436 local mapped_ports = {};
33227efa2cdc mod_net_proxy: Automatically listen on all mapped ports if proxy_ports was not configured Pascal Mathis <mail@pascalmathis.com> parents: 2935 diff changeset	437 for port, mapping in pairs(config_mappings) do
33227efa2cdc mod_net_proxy: Automatically listen on all mapped ports if proxy_ports was not configured Pascal Mathis <mail@pascalmathis.com> parents: 2935 diff changeset	438 table.insert(mapped_ports, port);
33227efa2cdc mod_net_proxy: Automatically listen on all mapped ports if proxy_ports was not configured Pascal Mathis <mail@pascalmathis.com> parents: 2935 diff changeset	439 mappings[port] = {
33227efa2cdc mod_net_proxy: Automatically listen on all mapped ports if proxy_ports was not configured Pascal Mathis <mail@pascalmathis.com> parents: 2935 diff changeset	440 service_name = mapping,
33227efa2cdc mod_net_proxy: Automatically listen on all mapped ports if proxy_ports was not configured Pascal Mathis <mail@pascalmathis.com> parents: 2935 diff changeset	441 service = nil,
33227efa2cdc mod_net_proxy: Automatically listen on all mapped ports if proxy_ports was not configured Pascal Mathis <mail@pascalmathis.com> parents: 2935 diff changeset	442 };
33227efa2cdc mod_net_proxy: Automatically listen on all mapped ports if proxy_ports was not configured Pascal Mathis <mail@pascalmathis.com> parents: 2935 diff changeset	443 end
33227efa2cdc mod_net_proxy: Automatically listen on all mapped ports if proxy_ports was not configured Pascal Mathis <mail@pascalmathis.com> parents: 2935 diff changeset	444
33227efa2cdc mod_net_proxy: Automatically listen on all mapped ports if proxy_ports was not configured Pascal Mathis <mail@pascalmathis.com> parents: 2935 diff changeset	445 -- Log error message when user manually specifies ports without configuring the necessary port mappings
33227efa2cdc mod_net_proxy: Automatically listen on all mapped ports if proxy_ports was not configured Pascal Mathis <mail@pascalmathis.com> parents: 2935 diff changeset	446 if not config_ports:empty() then
33227efa2cdc mod_net_proxy: Automatically listen on all mapped ports if proxy_ports was not configured Pascal Mathis <mail@pascalmathis.com> parents: 2935 diff changeset	447 local missing_ports = config_ports - set.new(mapped_ports);
33227efa2cdc mod_net_proxy: Automatically listen on all mapped ports if proxy_ports was not configured Pascal Mathis <mail@pascalmathis.com> parents: 2935 diff changeset	448 if not missing_ports:empty() then
33227efa2cdc mod_net_proxy: Automatically listen on all mapped ports if proxy_ports was not configured Pascal Mathis <mail@pascalmathis.com> parents: 2935 diff changeset	449 module:log("error", "Missing port<>service mappings for these ports: %s", tostring(missing_ports));
2930 9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	450 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	451 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	452
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	453 -- Register the previously declared network listener
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	454 module:provides("net", {
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	455 name = "proxy";
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	456 listener = listener;
2961 33227efa2cdc mod_net_proxy: Automatically listen on all mapped ports if proxy_ports was not configured Pascal Mathis <mail@pascalmathis.com> parents: 2935 diff changeset	457 default_ports = mapped_ports;
2930 9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2 Pascal Mathis <mail@pascalmathis.com> parents: diff changeset	458 });

prosody-modules

569b98d6fca1

mod_net_proxy/mod_net_proxy.lua

Software / code / prosody-modules

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mod_net_proxy/mod_net_proxy.lua @ 2968:569b98d6fca1

Software `/` code `/` prosody-modules