prosody-modules
db5128d1a16c
mod_net_proxy/mod_net_proxy.lua

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mod_net_proxy/mod_net_proxy.lua @ 5939:db5128d1a16c

mod_report_forward: Fix traceback when reporting a specific message (thanks singpolyma)
author Matthew Wild <mwild1@gmail.com>
date Thu, 30 May 2024 17:55:07 +0100
parent 4944:9d65eb3fcb15
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 -- mod_net_proxy.lua
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2 -- Copyright (C) 2018 Pascal Mathis <mail@pascalmathis.com>
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3 --
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4 -- Implementation of PROXY protocol versions 1 and 2
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5 -- Specifications: https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt
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6
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7 module:set_global();
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8
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9 -- Imports
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10 local softreq = require "util.dependencies".softreq;
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11 local bit = assert(softreq "bit" or softreq "bit32" or softreq "util.bitcompat", "No bit module found. See https://prosody.im/doc/depends#bitop");
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12 local hex = require "util.hex";
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13 local ip = require "util.ip";
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14 local net = require "util.net";
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15 local set = require "util.set";
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16 local portmanager = require "core.portmanager";
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17
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18 -- Backwards Compatibility
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19 local function net_ntop_bc(input)
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20 if input:len() == 4 then
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21 return string.format("%d.%d.%d.%d", input:byte(1, 4));
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22 elseif input:len() == 16 then
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23 local octets = { nil, nil, nil, nil, nil, nil, nil, nil };
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24
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25 -- Convert received bytes into IPv6 address and skip leading zeroes for each group
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26 for index = 1, 8 do
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27 local high, low = input:byte(index * 2 - 1, index * 2);
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28 octets[index] = string.format("%x", high * 256 + low);
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29 end
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30 local address = table.concat(octets, ":", 1, 8);
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31
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32 -- Search for the longest sequence of zeroes
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33 local token;
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34 local length = (address:match("^0:[0:]+()") or 1) - 1;
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35 for s in address:gmatch(":0:[0:]+") do
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36 if length < #s then
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37 length, token = #s, s;
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38 end
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39 end
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40
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41 -- Return the shortened IPv6 address
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42 return address:gsub(token or "^0:[0:]+", "::", 1);
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43 end
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44 end
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45
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46 local net_ntop = net.ntop or net_ntop_bc
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47
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48 -- Utility Functions
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49 local function _table_invert(input)
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50 local output = {};
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51 for key, value in pairs(input) do
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52 output[value] = key;
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53 end
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54 return output;
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55 end
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56
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57 -- Constants
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58 local ADDR_FAMILY = { UNSPEC = 0x0, INET = 0x1, INET6 = 0x2, UNIX = 0x3 };
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59 local ADDR_FAMILY_STR = _table_invert(ADDR_FAMILY);
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60 local TRANSPORT = { UNSPEC = 0x0, STREAM = 0x1, DGRAM = 0x2 };
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61 local TRANSPORT_STR = _table_invert(TRANSPORT);
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62
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63 local PROTO_MAX_HEADER_LENGTH = 256;
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64 local PROTO_HANDLERS = {
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65 PROXYv1 = { signature = hex.from("50524F5859"), callback = nil },
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66 PROXYv2 = { signature = hex.from("0D0A0D0A000D0A515549540A"), callback = nil }
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67 };
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68 local PROTO_HANDLER_STATUS = { SUCCESS = 0, POSTPONE = 1, FAILURE = 2 };
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69
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70 -- Configuration Variables
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71 local config_mappings = module:get_option("proxy_port_mappings", {});
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72 local config_ports = module:get_option_set("proxy_ports", {});
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73 local config_trusted_proxies = module:get_option_set("proxy_trusted_proxies", {"127.0.0.1", "::1"});
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74
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75 -- Persistent In-Memory Storage
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76 local sessions = {};
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77 local mappings = {};
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78 local trusted_networks = set.new();
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79
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80 -- Proxy Data Methods
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81 local proxy_data_mt = {}; proxy_data_mt.__index = proxy_data_mt;
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82
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83 function proxy_data_mt:describe()
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84 return string.format("proto=%s/%s src=%s:%d dst=%s:%d",
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85 self:addr_family_str(), self:transport_str(), self:src_addr(), self:src_port(), self:dst_addr(), self:dst_port());
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86 end
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87
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88 function proxy_data_mt:addr_family_str()
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89 return ADDR_FAMILY_STR[self._addr_family] or ADDR_FAMILY_STR[ADDR_FAMILY.UNSPEC];
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90 end
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91
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92 function proxy_data_mt:transport_str()
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93 return TRANSPORT_STR[self._transport] or TRANSPORT_STR[TRANSPORT.UNSPEC];
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94 end
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95
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96 function proxy_data_mt:version()
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97 return self._version;
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98 end
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99
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100 function proxy_data_mt:addr_family()
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101 return self._addr_family;
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102 end
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103
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104 function proxy_data_mt:transport()
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105 return self._transport;
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106 end
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107
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108 function proxy_data_mt:src_addr()
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109 return self._src_addr;
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110 end
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111
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112 function proxy_data_mt:src_port()
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113 return self._src_port;
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114 end
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115
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116 function proxy_data_mt:dst_addr()
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117 return self._dst_addr;
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118 end
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119
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120 function proxy_data_mt:dst_port()
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121 return self._dst_port;
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122 end
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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);
2975
7eb6fa9b03fd mod_net_proxy: Added missing return when detecting unparseable PROXYv1 source address
Pascal Mathis <mail@pascalmathis.com>
parents: 2963
diff changeset
162 return PROTO_HANDLER_STATUS.FAILURE, nil;
2930
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
163 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
164 _, 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
165 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
166 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
167 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
168 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
169
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
170 -- 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
171 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
172
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
173 local proxy_data = {
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
174 _version = 1,
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
175 _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
176 _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
177 _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
178 };
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
179 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
180
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
181 -- 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
182 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
183 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
184
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
185 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
186 -- 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
187 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
188 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
189 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
190
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
191 -- 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
192 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
193 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
194 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
195 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
196 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
197
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
198 -- 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
199 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
200 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
201 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
202
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
203 -- 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
204 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
205 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
206 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
207 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
208
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
209 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
210 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
211 -- 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
212 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
213 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
214
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
215 -- 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
216 local proxy_data = {
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
217 _version = version,
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
218 _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
219 _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
220 _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
221 };
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
222 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
223
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
224 -- 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
225 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
226 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
227 local offset = 1;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
228 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
229
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
230 -- 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
231 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
232 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
233 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
234 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
235
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
236 -- 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
237 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
238 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
239 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
240 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
241 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
242 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
243 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
244 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
245 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
246 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
247
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
248 -- 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
249 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
250 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
251 -- luacheck: ignore 311
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
252 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
253 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
254
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
255 -- 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
256 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
257
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
258 local proxy_data = {
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
259 _version = version,
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
260 _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
261 _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
262 _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
263 };
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
264 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
265
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
266 -- 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
267 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
268 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
269 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
270 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
271 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
272 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
273
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
274 -- 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
275 -- 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
276 -- 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
277 -- '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
278 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
279 -- 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
280 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
281 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
282 conn.ip = function()
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
283 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
284 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
285 conn.port = function()
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
286 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
287 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
288 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
289 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
290
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
291 -- Attempt to find service by processing port<>service mappings
3562
b33b2fbdc713 mod_net_proxy: Ensure port numbers are coerced into numbers
Kim Alvefur <zash@zash.se>
parents: 2997
diff changeset
292 local mapping = mappings[tonumber(conn:serverport())];
2930
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
293 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
294 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
295 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
296 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
297 return;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
298 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
299
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
300 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
301 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
302
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
303 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
304 mapping.service = service;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
305 else
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
306 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
307 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
308 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
309 return;
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 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
312
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
313 -- 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
314 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
315
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
316 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
317 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
318 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
319 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
320 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
321 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
322 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
323
2963
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections
Pascal Mathis <mail@pascalmathis.com>
parents: 2962
diff changeset
324 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
325 -- 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
326 -- 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
327 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
328 return true;
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections
Pascal Mathis <mail@pascalmathis.com>
parents: 2962
diff changeset
329 end
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections
Pascal Mathis <mail@pascalmathis.com>
parents: 2962
diff changeset
330
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections
Pascal Mathis <mail@pascalmathis.com>
parents: 2962
diff changeset
331 -- 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
332 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
333 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
334 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
335 return true;
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 end
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections
Pascal Mathis <mail@pascalmathis.com>
parents: 2962
diff changeset
338
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections
Pascal Mathis <mail@pascalmathis.com>
parents: 2962
diff changeset
339 -- 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
340 return false;
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections
Pascal Mathis <mail@pascalmathis.com>
parents: 2962
diff changeset
341 end
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections
Pascal Mathis <mail@pascalmathis.com>
parents: 2962
diff changeset
342
2930
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
343 -- Network Listener Methods
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
344 local listener = {};
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
345
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
346 function listener.onconnect(conn)
2997
97b30fec709c mod_net_proxy: Fixed errors when connection with nil ip is being processed
Pascal Mathis <mail@pascalmathis.com>
parents: 2975
diff changeset
347 -- Silently drop connections with an IP address of <nil>, which can happen when the socket was closed before the
97b30fec709c mod_net_proxy: Fixed errors when connection with nil ip is being processed
Pascal Mathis <mail@pascalmathis.com>
parents: 2975
diff changeset
348 -- responsible net.server backend was able to grab the IP address of the connecting client.
97b30fec709c mod_net_proxy: Fixed errors when connection with nil ip is being processed
Pascal Mathis <mail@pascalmathis.com>
parents: 2975
diff changeset
349 if conn:ip() == nil then
97b30fec709c mod_net_proxy: Fixed errors when connection with nil ip is being processed
Pascal Mathis <mail@pascalmathis.com>
parents: 2975
diff changeset
350 conn:close();
97b30fec709c mod_net_proxy: Fixed errors when connection with nil ip is being processed
Pascal Mathis <mail@pascalmathis.com>
parents: 2975
diff changeset
351 return;
97b30fec709c mod_net_proxy: Fixed errors when connection with nil ip is being processed
Pascal Mathis <mail@pascalmathis.com>
parents: 2975
diff changeset
352 end
97b30fec709c mod_net_proxy: Fixed errors when connection with nil ip is being processed
Pascal Mathis <mail@pascalmathis.com>
parents: 2975
diff changeset
353
2963
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections
Pascal Mathis <mail@pascalmathis.com>
parents: 2962
diff changeset
354 -- 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
355 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
356 conn:close();
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections
Pascal Mathis <mail@pascalmathis.com>
parents: 2962
diff changeset
357 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
358 return;
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections
Pascal Mathis <mail@pascalmathis.com>
parents: 2962
diff changeset
359 end
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections
Pascal Mathis <mail@pascalmathis.com>
parents: 2962
diff changeset
360
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections
Pascal Mathis <mail@pascalmathis.com>
parents: 2962
diff changeset
361 -- 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
362 sessions[conn] = {
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
363 handler = nil;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
364 buffer = nil;
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 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
367
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
368 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
369 -- 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
370 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
371 return;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
372 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
373
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
374 -- 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
375 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
376 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
377
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
378 -- 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
379 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
380 -- 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
381 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
382 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
383 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
384 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
385 break;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
386 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
387 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
388
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
389 -- 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
390 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
391 -- 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
392 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
393 conn:close();
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
394 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
395 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
396 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
397
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
398 -- 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
399 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
400 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
401 return;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
402 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
403 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
404
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
405 -- 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
406 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
407 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
408 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
409 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
410 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
411 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
412 return;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
413 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
414 conn:close();
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
415 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
416 "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
417 return;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
418 else
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
419 -- 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
420 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
421 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
422 return;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
423 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
424 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
425
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
426 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
427 sessions[conn] = nil;
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
428 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
429
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
430 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
431
2963
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections
Pascal Mathis <mail@pascalmathis.com>
parents: 2962
diff changeset
432 -- 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
433 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
434 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
435 local network = {};
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections
Pascal Mathis <mail@pascalmathis.com>
parents: 2962
diff changeset
436 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
437 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
438 end
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections
Pascal Mathis <mail@pascalmathis.com>
parents: 2962
diff changeset
439 else
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections
Pascal Mathis <mail@pascalmathis.com>
parents: 2962
diff changeset
440 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
441 end
504bb330e910 mod_net_proxy: Added proxy_trusted_proxies for whitelisting incoming connections
Pascal Mathis <mail@pascalmathis.com>
parents: 2962
diff changeset
442
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
443 -- 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
444 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
445 for port, mapping in pairs(config_mappings) do
3562
b33b2fbdc713 mod_net_proxy: Ensure port numbers are coerced into numbers
Kim Alvefur <zash@zash.se>
parents: 2997
diff changeset
446 port = tonumber(port);
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
447 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
448 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
449 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
450 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
451 };
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
452 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
453
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
454 -- 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
455 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
456 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
457 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
458 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
459 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
460 end
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
461
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
462 -- 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
463 module:provides("net", {
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
464 name = "proxy";
9a62780e7ee2 mod_net_proxy: New module implementing PROXY protocol versions 1 and 2
Pascal Mathis <mail@pascalmathis.com>
parents:
diff changeset
465 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
466 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
467 });