2 -- Copyright (C) 2008-2009 Matthew Wild
3 -- Copyright (C) 2008-2009 Waqas Hussain
5 -- This project is MIT/X11 licensed. Please see the
6 -- COPYING file in the source package for more information.
12 local log = require "util.logger".init("componentmanager");
13 local configmanager = require "core.configmanager";
14 local eventmanager = require "core.eventmanager";
15 local modulemanager = require "core.modulemanager";
16 local core_route_stanza = core_route_stanza;
17 local jid_split = require "util.jid".split;
18 local events_new = require "util.events".new;
19 local st = require "util.stanza";
22 local pairs, type, tostring = pairs, type, tostring;
24 local components = {};
26 local disco_items = require "util.multitable".new();
28 require "core.discomanager".addDiscoItemsHandler("*host", function(reply, to, from, node)
29 if #node == 0 and hosts[to] then
30 for jid in pairs(disco_items:get(to) or NULL) do
31 reply:tag("item", {jid = jid}):up();
37 require "core.eventmanager".add_event_hook("server-starting", function () core_route_stanza = _G.core_route_stanza; end);
39 module "componentmanager"
41 local function default_component_handler(origin, stanza)
42 log("warn", "Stanza being handled by default component, bouncing error");
43 if stanza.attr.type ~= "error" then
44 core_route_stanza(nil, st.error_reply(stanza, "wait", "service-unavailable", "Component unavailable"));
48 local components_loaded_once;
49 function load_enabled_components(config)
50 local defined_hosts = config or configmanager.getconfig();
52 for host, host_config in pairs(defined_hosts) do
53 if host ~= "*" and ((host_config.core.enabled == nil or host_config.core.enabled) and type(host_config.core.component_module) == "string") then
54 hosts[host] = { type = "component", host = host, connected = false, s2sout = {} };
55 components[host] = default_component_handler;
56 local ok, err = modulemanager.load(host, host_config.core.component_module);
58 log("error", "Error loading %s component %s: %s", tostring(host_config.core.component_module), tostring(host), tostring(err));
60 log("debug", "Activated %s component: %s", host_config.core.component_module, host);
66 eventmanager.add_event_hook("server-starting", load_enabled_components);
68 function handle_stanza(origin, stanza)
69 local node, host = jid_split(stanza.attr.to);
70 local component = nil;
72 if node then component = components[node.."@"..host]; end -- hack to allow hooking node@server
73 if not component then component = components[host]; end
76 log("debug", "%s stanza being handled by component: %s", stanza.name, host);
77 component(origin, stanza, hosts[host]);
79 log("error", "Component manager recieved a stanza for a non-existing component: " .. stanza.attr.to);
83 function create_component(host, component)
84 -- TODO check for host well-formedness
85 return { type = "component", host = host, connected = true, s2sout = {}, events = events_new() };
88 function register_component(host, component, session)
89 if not hosts[host] or (hosts[host].type == 'component' and not hosts[host].connected) then
90 components[host] = component;
91 hosts[host] = session or create_component(host, component);
93 if not(host:find("@", 1, true) or host:find("/", 1, true)) and host:find(".", 1, true) then
94 disco_items:set(host:sub(host:find(".", 1, true)+1), host, true);
96 -- FIXME only load for a.b.c if b.c has dialback, and/or check in config
97 modulemanager.load(host, "dialback");
98 log("debug", "component added: "..host);
99 return session or hosts[host];
101 log("error", "Attempt to set component for existing host: "..host);
105 function deregister_component(host)
106 if components[host] then
107 modulemanager.unload(host, "dialback");
108 hosts[host].connected = nil;
109 local host_config = configmanager.getconfig()[host];
110 if host_config and ((host_config.core.enabled == nil or host_config.core.enabled) and type(host_config.core.component_module) == "string") then
111 -- Set default handler
112 components[host] = default_component_handler;
114 -- Component not in config, or disabled, remove
116 components[host] = nil;
118 -- remove from disco_items
119 if not(host:find("@", 1, true) or host:find("/", 1, true)) and host:find(".", 1, true) then
120 disco_items:remove(host:sub(host:find(".", 1, true)+1), host);
122 log("debug", "component removed: "..host);
125 log("error", "Attempt to remove component for non-existing host: "..host);
129 function set_component_handler(host, handler)
130 components[host] = handler;