prosody
0d49a4e9963b
core/portmanager.lua

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core/portmanager.lua @ 5391:0d49a4e9963b

portmanager: use_ipv6 defaults to true if luasocket has ipv6 support
author Kim Alvefur <zash@zash.se>
date Wed, 27 Mar 2013 23:32:34 +0100
parent 5319:d20861bf900b
child 5392:613959dbd0b2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 local config = require "core.configmanager";
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2 local certmanager = require "core.certmanager";
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3 local server = require "net.server";
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4 local socket = require "socket";
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5
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6 local log = require "util.logger".init("portmanager");
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7 local multitable = require "util.multitable";
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8 local set = require "util.set";
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9
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10 local table = table;
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11 local setmetatable, rawset, rawget = setmetatable, rawset, rawget;
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12 local type, tonumber, ipairs = type, tonumber, ipairs;
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13
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14 local prosody = prosody;
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15 local fire_event = prosody.events.fire_event;
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16
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17 module "portmanager";
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18
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19 --- Config
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20
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21 local default_interfaces = { "*" };
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22 local default_local_interfaces = { "127.0.0.1" };
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23 if socket.tcp6 and config.get("*", "use_ipv6") ~= false then
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24 table.insert(default_interfaces, "::");
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25 table.insert(default_local_interfaces, "::1");
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26 end
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27
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28 --- Private state
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29
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30 -- service_name -> { service_info, ... }
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31 local services = setmetatable({}, { __index = function (t, k) rawset(t, k, {}); return rawget(t, k); end });
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32
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33 -- service_name, interface (string), port (number)
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34 local active_services = multitable.new();
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35
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36 --- Private helpers
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37
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38 local function error_to_friendly_message(service_name, port, err)
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39 local friendly_message = err;
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40 if err:match(" in use") then
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41 -- FIXME: Use service_name here
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42 if port == 5222 or port == 5223 or port == 5269 then
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43 friendly_message = "check that Prosody or another XMPP server is "
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44 .."not already running and using this port";
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45 elseif port == 80 or port == 81 then
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46 friendly_message = "check that a HTTP server is not already using "
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47 .."this port";
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48 elseif port == 5280 then
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49 friendly_message = "check that Prosody or a BOSH connection manager "
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50 .."is not already running";
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51 else
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52 friendly_message = "this port is in use by another application";
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53 end
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54 elseif err:match("permission") then
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55 friendly_message = "Prosody does not have sufficient privileges to use this port";
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56 end
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57 return friendly_message;
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58 end
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59
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60 prosody.events.add_handler("item-added/net-provider", function (event)
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61 local item = event.item;
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62 register_service(item.name, item);
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63 end);
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64 prosody.events.add_handler("item-removed/net-provider", function (event)
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65 local item = event.item;
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66 unregister_service(item.name, item);
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67 end);
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68
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69 --- Public API
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70
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71 function activate(service_name)
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72 local service_info = services[service_name][1];
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73 if not service_info then
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74 return nil, "Unknown service: "..service_name;
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75 end
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76
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77 local listener = service_info.listener;
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78
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79 local config_prefix = (service_info.config_prefix or service_name).."_";
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80 if config_prefix == "_" then
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81 config_prefix = "";
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82 end
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83
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84 local bind_interfaces = config.get("*", config_prefix.."interfaces")
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85 or config.get("*", config_prefix.."interface") -- COMPAT w/pre-0.9
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86 or (service_info.private and (config.get("*", "local_interfaces") or default_local_interfaces))
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87 or config.get("*", "interfaces")
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88 or config.get("*", "interface") -- COMPAT w/pre-0.9
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89 or listener.default_interface -- COMPAT w/pre0.9
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90 or default_interfaces
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91 bind_interfaces = set.new(type(bind_interfaces)~="table" and {bind_interfaces} or bind_interfaces);
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92
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93 local bind_ports = config.get("*", config_prefix.."ports")
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94 or service_info.default_ports
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95 or {service_info.default_port
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96 or listener.default_port -- COMPAT w/pre-0.9
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97 }
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98 bind_ports = set.new(type(bind_ports) ~= "table" and { bind_ports } or bind_ports );
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99
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100 local mode, ssl = listener.default_mode or "*a";
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101
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102 for interface in bind_interfaces do
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103 for port in bind_ports do
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104 port = tonumber(port);
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105 if #active_services:search(nil, interface, port) > 0 then
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106 log("error", "Multiple services configured to listen on the same port ([%s]:%d): %s, %s", interface, port, active_services:search(nil, interface, port)[1][1].service.name or "<unnamed>", service_name or "<unnamed>");
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107 else
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108 local err;
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109 -- Create SSL context for this service/port
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110 if service_info.encryption == "ssl" then
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111 local ssl_config = config.get("*", config_prefix.."ssl");
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112 ssl, err = certmanager.create_context(service_info.name.." port "..port, "server", ssl_config and (ssl_config[port]
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113 or (ssl_config.certificate and ssl_config)));
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114 if not ssl then
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115 log("error", "Error binding encrypted port for %s: %s", service_info.name, error_to_friendly_message(service_name, port, err) or "unknown error");
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116 end
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117 end
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118 if not err then
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119 -- Start listening on interface+port
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120 local handler, err = server.addserver(interface, port, listener, mode, ssl);
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121 if not handler then
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122 log("error", "Failed to open server port %d on %s, %s", port, interface, error_to_friendly_message(service_name, port, err));
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123 else
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124 log("debug", "Added listening service %s to [%s]:%d", service_name, interface, port);
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125 active_services:add(service_name, interface, port, {
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126 server = handler;
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127 service = service_info;
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128 });
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129 end
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130 end
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131 end
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132 end
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133 end
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134 log("info", "Activated service '%s'", service_name);
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135 return true;
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136 end
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137
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138 function deactivate(service_name, service_info)
4902
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139 for name, interface, port, n, active_service
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140 in active_services:iter(service_name or service_info and service_info.name, nil, nil, nil) do
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141 if service_info == nil or active_service.service == service_info then
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142 close(interface, port);
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143 end
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144 end
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145 log("info", "Deactivated service '%s'", service_name or service_info.name);
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146 end
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147
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148 function register_service(service_name, service_info)
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149 table.insert(services[service_name], service_info);
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150
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151 if not active_services:get(service_name) then
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152 log("debug", "No active service for %s, activating...", service_name);
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153 local ok, err = activate(service_name);
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154 if not ok then
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155 log("error", "Failed to activate service '%s': %s", service_name, err or "unknown error");
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156 end
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157 end
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158
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159 fire_event("service-added", { name = service_name, service = service_info });
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160 return true;
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161 end
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162
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163 function unregister_service(service_name, service_info)
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164 log("debug", "Unregistering service: %s", service_name);
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165 local service_info_list = services[service_name];
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166 for i, service in ipairs(service_info_list) do
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167 if service == service_info then
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168 table.remove(service_info_list, i);
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169 end
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170 end
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171 deactivate(nil, service_info);
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172 if #service_info_list > 0 then -- Other services registered with this name
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173 activate(service_name); -- Re-activate with the next available one
4607
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174 end
4612
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175 fire_event("service-removed", { name = service_name, service = service_info });
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176 end
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177
4677
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178 function close(interface, port)
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179 local service, server = get_service_at(interface, port);
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180 if not service then
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181 return false, "port-not-open";
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182 end
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183 server:close();
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184 active_services:remove(service.name, interface, port);
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185 log("debug", "Removed listening service %s from [%s]:%d", service.name, interface, port);
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186 return true;
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187 end
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188
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189 function get_service_at(interface, port)
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diff changeset
190 local data = active_services:search(nil, interface, port)[1][1];
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diff changeset
191 return data.service, data.server;
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192 end
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diff changeset
193
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diff changeset
194 function get_service(service_name)
5225
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diff changeset
195 return (services[service_name] or {})[1];
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196 end
4542
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197
4598
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diff changeset
198 function get_active_services(...)
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199 return active_services;
d2bcb959d713 portmanager: Add get_active_services()
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200 end
d2bcb959d713 portmanager: Add get_active_services()
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diff changeset
201
4618
1ec8122ddffe portmanager: Add get_registered_services() to the public API
Matthew Wild <mwild1@gmail.com>
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diff changeset
202 function get_registered_services()
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diff changeset
203 return services;
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204 end
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diff changeset
205
4542
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206 return _M;