prosody
e239668aa6d2
core/portmanager.lua

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core/portmanager.lua @ 4797:e239668aa6d2

Merge 0.9->trunk
author Matthew Wild <mwild1@gmail.com>
date Sun, 29 Apr 2012 02:10:55 +0100
parent 4789:bed0c6117358
child 4800:7ce502f21270
comparison
equal deleted inserted replaced
4796:04a34287dc12 4797:e239668aa6d2
1 local config = require "core.configmanager";
2 local server = require "net.server";
3
4 local log = require "util.logger".init("portmanager");
5 local multitable = require "util.multitable";
6 local set = require "util.set";
7
8 local table, package = table, package;
9 local setmetatable, rawset, rawget = setmetatable, rawset, rawget;
10 local type, tonumber = type, tonumber;
11
12 local prosody = prosody;
13 local fire_event = prosody.events.fire_event;
14
15 module "portmanager";
16
17 --- Config
18
19 local default_interfaces = { "*" };
20 local default_local_interfaces = { "127.0.0.1" };
21 if config.get("*", "use_ipv6") then
22 table.insert(default_interfaces, "::");
23 table.insert(default_local_interfaces, "::1");
24 end
25
26 --- Private state
27
28 -- service_name -> { service_info, ... }
29 local services = setmetatable({}, { __index = function (t, k) rawset(t, k, {}); return rawget(t, k); end });
30
31 -- service_name, interface (string), port (number)
32 local active_services = multitable.new();
33
34 --- Private helpers
35
36 local function error_to_friendly_message(service_name, port, err)
37 local friendly_message = err;
38 if err:match(" in use") then
39 -- FIXME: Use service_name here
40 if port == 5222 or port == 5223 or port == 5269 then
41 friendly_message = "check that Prosody or another XMPP server is "
42 .."not already running and using this port";
43 elseif port == 80 or port == 81 then
44 friendly_message = "check that a HTTP server is not already using "
45 .."this port";
46 elseif port == 5280 then
47 friendly_message = "check that Prosody or a BOSH connection manager "
48 .."is not already running";
49 else
50 friendly_message = "this port is in use by another application";
51 end
52 elseif err:match("permission") then
53 friendly_message = "Prosody does not have sufficient privileges to use this port";
54 elseif err == "no ssl context" then
55 if not config.get("*", "core", "ssl") then
56 friendly_message = "there is no 'ssl' config under Host \"*\" which is "
57 .."require for legacy SSL ports";
58 else
59 friendly_message = "initializing SSL support failed, see previous log entries";
60 end
61 end
62 return friendly_message;
63 end
64
65 prosody.events.add_handler("item-added/net-provider", function (event)
66 local item = event.item;
67 register_service(item.name, item);
68 end);
69 prosody.events.add_handler("item-removed/net-provider", function (event)
70 local item = event.item;
71 unregister_service(item.name, item);
72 end);
73
74 --- Public API
75
76 function activate(service_name)
77 local service_info = services[service_name][1];
78 if not service_info then
79 return nil, "Unknown service: "..service_name;
80 end
81
82 local listener = service_info.listener;
83
84 local config_prefix = (service_info.config_prefix or service_name).."_";
85 if config_prefix == "_" then
86 config_prefix = "";
87 end
88
89 local bind_interfaces = config.get("*", config_prefix.."interfaces")
90 or config.get("*", config_prefix.."interface") -- COMPAT w/pre-0.9
91 or (service_info.private and default_local_interfaces)
92 or config.get("*", "interfaces")
93 or config.get("*", "interface") -- COMPAT w/pre-0.9
94 or listener.default_interface -- COMPAT w/pre0.9
95 or default_interfaces
96 bind_interfaces = set.new(type(bind_interfaces)~="table" and {bind_interfaces} or bind_interfaces);
97
98 local bind_ports = set.new(config.get("*", config_prefix.."ports")
99 or service_info.default_ports
100 or {service_info.default_port
101 or listener.default_port -- COMPAT w/pre-0.9
102 });
103
104 local mode = listener.default_mode or "*a";
105 local ssl;
106 if service_info.encryption == "ssl" then
107 ssl = prosody.global_ssl_ctx;
108 if not ssl then
109 return nil, "global-ssl-context-required";
110 end
111 end
112
113 for interface in bind_interfaces do
114 for port in bind_ports do
115 port = tonumber(port);
116 if #active_services:search(nil, interface, port) > 0 then
117 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>");
118 else
119 local handler, err = server.addserver(interface, port, listener, mode, ssl);
120 if not handler then
121 log("error", "Failed to open server port %d on %s, %s", port, interface, error_to_friendly_message(service_name, port, err));
122 else
123 log("debug", "Added listening service %s to [%s]:%d", service_name, interface, port);
124 active_services:add(service_name, interface, port, {
125 server = handler;
126 service = service_info;
127 });
128 end
129 end
130 end
131 end
132 log("info", "Activated service '%s'", service_name);
133 return true;
134 end
135
136 function deactivate(service_name)
137 local active = active_services:search(service_name)[1];
138 if not active then return; end
139 for interface, ports in pairs(active) do
140 for port, active_service in pairs(ports) do
141 close(interface, port);
142 end
143 end
144 log("info", "Deactivated service '%s'", service_name);
145 end
146
147 function register_service(service_name, service_info)
148 table.insert(services[service_name], service_info);
149
150 if not active_services:get(service_name) then
151 log("debug", "No active service for %s, activating...", service_name);
152 local ok, err = activate(service_name);
153 if not ok then
154 log("error", "Failed to activate service '%s': %s", service_name, err or "unknown error");
155 end
156 end
157
158 fire_event("service-added", { name = service_name, service = service_info });
159 return true;
160 end
161
162 function unregister_service(service_name, service_info)
163 local service_info_list = services[service_name];
164 for i, service in ipairs(service_info_list) do
165 if service == service_info then
166 table.remove(service_info_list, i);
167 end
168 end
169 if active_services[service_name] == service_info then
170 deactivate(service_name);
171 if #service_info_list > 0 then -- Other services registered with this name
172 activate(service_name); -- Re-activate with the next available one
173 end
174 end
175 fire_event("service-removed", { name = service_name, service = service_info });
176 end
177
178 function close(interface, port)
179 local service, server = get_service_at(interface, port);
180 if not service then
181 return false, "port-not-open";
182 end
183 server:close();
184 active_services:remove(service.name, interface, port);
185 log("debug", "Removed listening service %s from [%s]:%d", service.name, interface, port);
186 return true;
187 end
188
189 function get_service_at(interface, port)
190 local data = active_services:search(nil, interface, port)[1][1];
191 return data.service, data.server;
192 end
193
194 function get_service(service_name)
195 return services[service_name];
196 end
197
198 function get_active_services(...)
199 return active_services;
200 end
201
202 function get_registered_services()
203 return services;
204 end
205
206 return _M;