prosody
789395f027f1
core/portmanager.lua

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core/portmanager.lua @ 9837:789395f027f1

core.portmanager: Reduce scope of variable Not sure why it was all the way out there, seems like there would have been unexpected behaviour from that
author Kim Alvefur <zash@zash.se>
date Wed, 10 Oct 2018 17:22:08 +0200
parent 9836:e487197ba8a5
child 9848:b923053e69ba
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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, tostring, ipairs = type, tonumber, tostring, 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 local _ENV = nil;
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18 -- luacheck: std none
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19
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20 --- Config
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21
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22 local default_interfaces = { };
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23 local default_local_interfaces = { };
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24 if config.get("*", "use_ipv4") ~= false then
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25 table.insert(default_interfaces, "*");
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26 table.insert(default_local_interfaces, "127.0.0.1");
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27 end
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28 if socket.tcp6 and config.get("*", "use_ipv6") ~= false then
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29 table.insert(default_interfaces, "::");
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30 table.insert(default_local_interfaces, "::1");
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31 end
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32
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33 local default_mode = config.get("*", "network_default_read_size") or 4096;
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34
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35 --- Private state
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36
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37 -- service_name -> { service_info, ... }
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38 local services = setmetatable({}, { __index = function (t, k) rawset(t, k, {}); return rawget(t, k); end });
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39
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40 -- service_name, interface (string), port (number)
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41 local active_services = multitable.new();
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42
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43 --- Private helpers
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44
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45 local function error_to_friendly_message(service_name, port, err) --luacheck: ignore 212/service_name
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46 local friendly_message = err;
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47 if err:match(" in use") then
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48 -- FIXME: Use service_name here
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49 if port == 5222 or port == 5223 or port == 5269 then
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50 friendly_message = "check that Prosody or another XMPP server is "
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51 .."not already running and using this port";
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52 elseif port == 80 or port == 81 then
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53 friendly_message = "check that a HTTP server is not already using "
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54 .."this port";
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55 elseif port == 5280 then
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56 friendly_message = "check that Prosody or a BOSH connection manager "
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57 .."is not already running";
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58 else
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59 friendly_message = "this port is in use by another application";
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60 end
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61 elseif err:match("permission") then
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62 friendly_message = "Prosody does not have sufficient privileges to use this port";
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63 end
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64 return friendly_message;
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65 end
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66
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67 --- Public API
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68
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69 local function activate(service_name)
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70 local service_info = services[service_name][1];
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71 if not service_info then
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72 return nil, "Unknown service: "..service_name;
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73 end
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74
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75 local listener = service_info.listener;
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76
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77 local config_prefix = (service_info.config_prefix or service_name).."_";
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78 if config_prefix == "_" then
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79 config_prefix = "";
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80 end
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81
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82 local bind_interfaces = config.get("*", config_prefix.."interfaces")
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83 or config.get("*", config_prefix.."interface") -- COMPAT w/pre-0.9
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84 or (service_info.private and (config.get("*", "local_interfaces") or default_local_interfaces))
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85 or config.get("*", "interfaces")
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86 or config.get("*", "interface") -- COMPAT w/pre-0.9
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87 or listener.default_interface -- COMPAT w/pre0.9
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88 or default_interfaces
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89 bind_interfaces = set.new(type(bind_interfaces)~="table" and {bind_interfaces} or bind_interfaces);
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90
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91 local bind_ports = config.get("*", config_prefix.."ports")
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92 or service_info.default_ports
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93 or {service_info.default_port
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94 or listener.default_port -- COMPAT w/pre-0.9
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95 }
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96 bind_ports = set.new(type(bind_ports) ~= "table" and { bind_ports } or bind_ports );
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97
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98 local mode = listener.default_mode or default_mode;
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99 local hooked_ports = {};
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100
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101 for interface in bind_interfaces do
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102 for port in bind_ports do
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103 local port_number = tonumber(port);
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104 if not port_number then
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105 log("error", "Invalid port number specified for service '%s': %s", service_info.name, tostring(port));
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106 elseif #active_services:search(nil, interface, port_number) > 0 then
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107 log("error", "Multiple services configured to listen on the same port ([%s]:%d): %s, %s", interface, port,
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108 active_services:search(nil, interface, port)[1][1].service.name or "<unnamed>", service_name or "<unnamed>");
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109 else
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110 local ssl, err;
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111 -- Create SSL context for this service/port
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112 if service_info.encryption == "ssl" then
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113 local global_ssl_config = config.get("*", "ssl") or {};
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114 local prefix_ssl_config = config.get("*", config_prefix.."ssl") or global_ssl_config;
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115 ssl, err = certmanager.create_context(service_info.name.." port "..port, "server",
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116 prefix_ssl_config[interface],
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117 prefix_ssl_config[port],
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118 prefix_ssl_config,
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119 service_info.ssl_config or {},
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120 global_ssl_config[interface],
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121 global_ssl_config[port]);
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122 if not ssl then
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123 log("error", "Error binding encrypted port for %s: %s", service_info.name,
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124 error_to_friendly_message(service_name, port_number, err) or "unknown error");
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125 end
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126 end
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127 if not err then
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128 -- Start listening on interface+port
9836
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diff changeset
129 local handler, err = server.listen(interface, port_number, listener, {
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130 read_size = mode,
e487197ba8a5 core.portmanager: Use server.listen API
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131 tls_ctx = ssl,
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132 tls_direct = service_info.encryption == "ssl";
e487197ba8a5 core.portmanager: Use server.listen API
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diff changeset
133 });
5009
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parents: 4902
diff changeset
134 if not handler then
7947
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diff changeset
135 log("error", "Failed to open server port %d on %s, %s", port_number, interface,
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parents: 7421
diff changeset
136 error_to_friendly_message(service_name, port_number, err));
5009
b27ba2c83dd4 portmanager: Show a friendly error message when initializing SSL fails (thanks MattJ for the entire patch that I fixed one line in)
Kim Alvefur <zash@zash.se>
parents: 4902
diff changeset
137 else
5550
557583904dc5 portmanager: Also include the interface the service is listening on
Kim Alvefur <zash@zash.se>
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diff changeset
138 table.insert(hooked_ports, "["..interface.."]:"..port_number);
5399
13454b2b86bf portmanager: Log error and fail to bind when port is invalid (not a number)
Matthew Wild <mwild1@gmail.com>
parents: 5392
diff changeset
139 log("debug", "Added listening service %s to [%s]:%d", service_name, interface, port_number);
13454b2b86bf portmanager: Log error and fail to bind when port is invalid (not a number)
Matthew Wild <mwild1@gmail.com>
parents: 5392
diff changeset
140 active_services:add(service_name, interface, port_number, {
5009
b27ba2c83dd4 portmanager: Show a friendly error message when initializing SSL fails (thanks MattJ for the entire patch that I fixed one line in)
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diff changeset
141 server = handler;
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142 service = service_info;
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diff changeset
143 });
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diff changeset
144 end
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145 end
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parents:
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146 end
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147 end
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148 end
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diff changeset
149 log("info", "Activated service '%s' on %s", service_name,
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diff changeset
150 #hooked_ports == 0 and "no ports" or table.concat(hooked_ports, ", "));
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7f45b2cb3c03 portmanager: Add unregister_service(), and allow multiple services with the same name (they get queued)
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diff changeset
151 return true;
4542
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diff changeset
152 end
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153
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154 local close; -- forward declaration
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155
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156 local function deactivate(service_name, service_info)
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Matthew Wild <mwild1@gmail.com>
parents: 6663
diff changeset
157 for name, interface, port, n, active_service --luacheck: ignore 213/name 213/n
4902
a7c799a7a34b portmanager: Match service against service_info (:iter() doesn't match values)
Matthew Wild <mwild1@gmail.com>
parents: 4897
diff changeset
158 in active_services:iter(service_name or service_info and service_info.name, nil, nil, nil) do
a7c799a7a34b portmanager: Match service against service_info (:iter() doesn't match values)
Matthew Wild <mwild1@gmail.com>
parents: 4897
diff changeset
159 if service_info == nil or active_service.service == service_info then
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Matthew Wild <mwild1@gmail.com>
parents: 4897
diff changeset
160 close(interface, port);
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161 end
4542
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162 end
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parents: 4861
diff changeset
163 log("info", "Deactivated service '%s'", service_name or service_info.name);
4542
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164 end
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165
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166 local function register_service(service_name, service_info)
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parents: 4598
diff changeset
167 table.insert(services[service_name], service_info);
4542
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parents:
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168
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parents: 4598
diff changeset
169 if not active_services:get(service_name) then
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parents: 4598
diff changeset
170 log("debug", "No active service for %s, activating...", service_name);
4743
70d68e789d93 portmanager: Rename activate_service() to activate() (to match deactivate())
Matthew Wild <mwild1@gmail.com>
parents: 4742
diff changeset
171 local ok, err = activate(service_name);
4607
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parents: 4598
diff changeset
172 if not ok then
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parents: 4598
diff changeset
173 log("error", "Failed to activate service '%s': %s", service_name, err or "unknown error");
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parents: 4598
diff changeset
174 end
4542
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175 end
5776
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Florian Zeitz <florob@babelmonkeys.de>
parents: 5550
diff changeset
176
4542
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177 fire_event("service-added", { name = service_name, service = service_info });
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178 return true;
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179 end
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parents:
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180
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diff changeset
181 local function unregister_service(service_name, service_info)
4897
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parents: 4861
diff changeset
182 log("debug", "Unregistering service: %s", service_name);
4607
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parents: 4598
diff changeset
183 local service_info_list = services[service_name];
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parents: 4598
diff changeset
184 for i, service in ipairs(service_info_list) do
7f45b2cb3c03 portmanager: Add unregister_service(), and allow multiple services with the same name (they get queued)
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parents: 4598
diff changeset
185 if service == service_info then
7f45b2cb3c03 portmanager: Add unregister_service(), and allow multiple services with the same name (they get queued)
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parents: 4598
diff changeset
186 table.remove(service_info_list, i);
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parents: 4598
diff changeset
187 end
7f45b2cb3c03 portmanager: Add unregister_service(), and allow multiple services with the same name (they get queued)
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parents: 4598
diff changeset
188 end
4897
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parents: 4861
diff changeset
189 deactivate(nil, service_info);
1a90e5225b22 portmanager: Fix to deactivate services when they are unregistered (metatable:iter() wins)
Matthew Wild <mwild1@gmail.com>
parents: 4861
diff changeset
190 if #service_info_list > 0 then -- Other services registered with this name
1a90e5225b22 portmanager: Fix to deactivate services when they are unregistered (metatable:iter() wins)
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parents: 4861
diff changeset
191 activate(service_name); -- Re-activate with the next available one
4607
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parents: 4598
diff changeset
192 end
4612
8bb93860fe46 portmanager: Fire service-removed on unregister
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parents: 4609
diff changeset
193 fire_event("service-removed", { name = service_name, service = service_info });
4607
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parents: 4598
diff changeset
194 end
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Matthew Wild <mwild1@gmail.com>
parents: 4598
diff changeset
195
6788
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diff changeset
196 local get_service_at -- forward declaration
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parents: 6779
diff changeset
197
4677
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Matthew Wild <mwild1@gmail.com>
parents: 4624
diff changeset
198 function close(interface, port)
6687
d1ee04683689 portmanager: Rename variable to avoid name conflict [luacheck]
Matthew Wild <mwild1@gmail.com>
parents: 6686
diff changeset
199 local service, service_server = get_service_at(interface, port);
4677
05d8b4099cf5 portmanager: Add get_service_at(interface, port) and close(interface, port)
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parents: 4624
diff changeset
200 if not service then
05d8b4099cf5 portmanager: Add get_service_at(interface, port) and close(interface, port)
Matthew Wild <mwild1@gmail.com>
parents: 4624
diff changeset
201 return false, "port-not-open";
05d8b4099cf5 portmanager: Add get_service_at(interface, port) and close(interface, port)
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parents: 4624
diff changeset
202 end
6687
d1ee04683689 portmanager: Rename variable to avoid name conflict [luacheck]
Matthew Wild <mwild1@gmail.com>
parents: 6686
diff changeset
203 service_server:close();
4677
05d8b4099cf5 portmanager: Add get_service_at(interface, port) and close(interface, port)
Matthew Wild <mwild1@gmail.com>
parents: 4624
diff changeset
204 active_services:remove(service.name, interface, port);
05d8b4099cf5 portmanager: Add get_service_at(interface, port) and close(interface, port)
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parents: 4624
diff changeset
205 log("debug", "Removed listening service %s from [%s]:%d", service.name, interface, port);
05d8b4099cf5 portmanager: Add get_service_at(interface, port) and close(interface, port)
Matthew Wild <mwild1@gmail.com>
parents: 4624
diff changeset
206 return true;
05d8b4099cf5 portmanager: Add get_service_at(interface, port) and close(interface, port)
Matthew Wild <mwild1@gmail.com>
parents: 4624
diff changeset
207 end
05d8b4099cf5 portmanager: Add get_service_at(interface, port) and close(interface, port)
Matthew Wild <mwild1@gmail.com>
parents: 4624
diff changeset
208
05d8b4099cf5 portmanager: Add get_service_at(interface, port) and close(interface, port)
Matthew Wild <mwild1@gmail.com>
parents: 4624
diff changeset
209 function get_service_at(interface, port)
05d8b4099cf5 portmanager: Add get_service_at(interface, port) and close(interface, port)
Matthew Wild <mwild1@gmail.com>
parents: 4624
diff changeset
210 local data = active_services:search(nil, interface, port)[1][1];
05d8b4099cf5 portmanager: Add get_service_at(interface, port) and close(interface, port)
Matthew Wild <mwild1@gmail.com>
parents: 4624
diff changeset
211 return data.service, data.server;
05d8b4099cf5 portmanager: Add get_service_at(interface, port) and close(interface, port)
Matthew Wild <mwild1@gmail.com>
parents: 4624
diff changeset
212 end
05d8b4099cf5 portmanager: Add get_service_at(interface, port) and close(interface, port)
Matthew Wild <mwild1@gmail.com>
parents: 4624
diff changeset
213
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Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
214 local function get_service(service_name)
5225
079e4cb23f89 portmanager: Return first service with the specified name from get_service() (instead of the array of possible services) (thanks xnyhps)
Matthew Wild <mwild1@gmail.com>
parents: 5087
diff changeset
215 return (services[service_name] or {})[1];
4597
25d89c7d6aee portmanager: Add get_service()
Matthew Wild <mwild1@gmail.com>
parents: 4583
diff changeset
216 end
4542
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parents:
diff changeset
217
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parents: 6688
diff changeset
218 local function get_active_services()
4598
d2bcb959d713 portmanager: Add get_active_services()
Matthew Wild <mwild1@gmail.com>
parents: 4597
diff changeset
219 return active_services;
d2bcb959d713 portmanager: Add get_active_services()
Matthew Wild <mwild1@gmail.com>
parents: 4597
diff changeset
220 end
d2bcb959d713 portmanager: Add get_active_services()
Matthew Wild <mwild1@gmail.com>
parents: 4597
diff changeset
221
6779
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Kim Alvefur <zash@zash.se>
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diff changeset
222 local function get_registered_services()
4618
1ec8122ddffe portmanager: Add get_registered_services() to the public API
Matthew Wild <mwild1@gmail.com>
parents: 4617
diff changeset
223 return services;
1ec8122ddffe portmanager: Add get_registered_services() to the public API
Matthew Wild <mwild1@gmail.com>
parents: 4617
diff changeset
224 end
1ec8122ddffe portmanager: Add get_registered_services() to the public API
Matthew Wild <mwild1@gmail.com>
parents: 4617
diff changeset
225
6779
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Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
226 -- Event handlers
6236668da30a core.*: Remove use of module() function
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diff changeset
227
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
228 prosody.events.add_handler("item-added/net-provider", function (event)
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
229 local item = event.item;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
230 register_service(item.name, item);
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
231 end);
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
232 prosody.events.add_handler("item-removed/net-provider", function (event)
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
233 local item = event.item;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
234 unregister_service(item.name, item);
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
235 end);
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
236
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
237 return {
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
238 activate = activate;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
239 deactivate = deactivate;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
240 register_service = register_service;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
241 unregister_service = unregister_service;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
242 close = close;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
243 get_service_at = get_service_at;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
244 get_service = get_service;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6688
diff changeset
245 get_active_services = get_active_services;
6236668da30a core.*: Remove use of module() function
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parents: 6688
diff changeset
246 get_registered_services = get_registered_services;
6236668da30a core.*: Remove use of module() function
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parents: 6688
diff changeset
247 };