prosody
26fb44b61a17
plugins/mod_net_multiplex.lua

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plugins/mod_net_multiplex.lua @ 10626:26fb44b61a17

net.resolvers.basic: Fix continuing if IPv6 or Legacy IP is disabled The code expects ready() to be called twice, but with IPv4 or v6 disabled it would only be called once.
author Kim Alvefur <zash@zash.se>
date Sun, 26 Jan 2020 14:35:35 +0100
parent 10475:fa0cad7c89e3
child 11023:a59b37b03eca
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 module:set_global();
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2
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3 local array = require "util.array";
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4 local max_buffer_len = module:get_option_number("multiplex_buffer_size", 1024);
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5
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6 local portmanager = require "core.portmanager";
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7
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8 local available_services = {};
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9 local service_by_protocol = {};
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10 local available_protocols = array();
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12 local function add_service(service)
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13 local multiplex_pattern = service.multiplex and service.multiplex.pattern;
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14 local protocol_name = service.multiplex and service.multiplex.protocol;
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15 if protocol_name then
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16 module:log("debug", "Adding multiplex service %q with protocol %q", service.name, protocol_name);
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17 service_by_protocol[protocol_name] = service;
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18 available_protocols:push(protocol_name);
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19 end
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20 if multiplex_pattern then
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21 module:log("debug", "Adding multiplex service %q with pattern %q", service.name, multiplex_pattern);
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22 available_services[service] = multiplex_pattern;
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23 elseif not protocol_name then
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24 module:log("debug", "Service %q is not multiplex-capable", service.name);
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25 end
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26 end
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27 module:hook("service-added", function (event) add_service(event.service); end);
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28 module:hook("service-removed", function (event)
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29 available_services[event.service] = nil;
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30 if event.service.multiplex and event.service.multiplex.protocol then
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31 available_protocols:filter(function (p) return p ~= event.service.multiplex.protocol end);
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32 service_by_protocol[event.service.multiplex.protocol] = nil;
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33 end
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34 end);
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35
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36 for _, services in pairs(portmanager.get_registered_services()) do
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37 for _, service in ipairs(services) do
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38 add_service(service);
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39 end
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40 end
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42 local buffers = {};
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44 local listener = { default_mode = "*a" };
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45
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46 function listener.onconnect(conn)
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47 local sock = conn:socket();
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48 if sock.getalpn then
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49 local selected_proto = sock:getalpn();
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50 local service = service_by_protocol[selected_proto];
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51 if service then
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52 module:log("debug", "Routing incoming connection to %s based on ALPN %q", service.name, selected_proto);
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53 local next_listener = service.listener;
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54 conn:setlistener(next_listener);
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55 local onconnect = next_listener.onconnect;
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56 if onconnect then return onconnect(conn) end
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57 end
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58 end
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59 end
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61 function listener.onincoming(conn, data)
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62 if not data then return; end
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63 local buf = buffers[conn];
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64 buf = buf and buf..data or data;
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65 for service, multiplex_pattern in pairs(available_services) do
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66 if buf:match(multiplex_pattern) then
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67 module:log("debug", "Routing incoming connection to %s", service.name);
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68 local next_listener = service.listener;
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69 conn:setlistener(next_listener);
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70 local onconnect = next_listener.onconnect;
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71 if onconnect then onconnect(conn) end
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72 return next_listener.onincoming(conn, buf);
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73 end
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74 end
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75 if #buf > max_buffer_len then -- Give up
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76 conn:close();
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77 else
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78 buffers[conn] = buf;
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79 end
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80 end
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81
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82 function listener.ondisconnect(conn)
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83 buffers[conn] = nil; -- warn if no buffer?
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84 end
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85
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86 listener.ondetach = listener.ondisconnect;
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87
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88 module:provides("net", {
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89 name = "multiplex";
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90 config_prefix = "";
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91 listener = listener;
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92 });
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93
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94 module:provides("net", {
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95 name = "multiplex_ssl";
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96 config_prefix = "ssl";
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97 encryption = "ssl";
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98 ssl_config = {
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99 alpn = function ()
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100 return available_protocols;
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101 end;
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102 };
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103 listener = listener;
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104 });