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core/componentmanager.lua @ 1161:5bc2b7b5b81d
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author | Tobias Markmann <tm@ayena.de> |
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date | Fri, 15 May 2009 17:28:39 +0200 |
parent | 1100:05d209ef9661 |
child | 1168:dd523bfc9ea9 |
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-- Prosody IM v0.4 -- Copyright (C) 2008-2009 Matthew Wild -- Copyright (C) 2008-2009 Waqas Hussain -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- local log = require "util.logger".init("componentmanager"); local configmanager = require "core.configmanager"; local eventmanager = require "core.eventmanager"; local modulemanager = require "core.modulemanager"; local core_route_stanza = core_route_stanza; local jid_split = require "util.jid".split; local st = require "util.stanza"; local hosts = hosts; local pairs, type, tostring = pairs, type, tostring; local components = {}; local disco_items = require "util.multitable".new(); local NULL = {}; require "core.discomanager".addDiscoItemsHandler("*host", function(reply, to, from, node) if #node == 0 and hosts[to] then for jid in pairs(disco_items:get(to) or NULL) do reply:tag("item", {jid = jid}):up(); end return true; end end); require "core.eventmanager".add_event_hook("server-starting", function () core_route_stanza = _G.core_route_stanza; end); module "componentmanager" local function default_component_handler(origin, stanza) log("warn", "Stanza being handled by default component, bouncing error"); if stanza.attr.type ~= "error" then core_route_stanza(nil, st.error_reply(stanza, "wait", "service-unavailable", "Component unavailable")); end end local components_loaded_once; function load_enabled_components(config) local defined_hosts = config or configmanager.getconfig(); for host, host_config in pairs(defined_hosts) do if host ~= "*" and ((host_config.core.enabled == nil or host_config.core.enabled) and type(host_config.core.component_module) == "string") then hosts[host] = { type = "component", host = host, connected = false, s2sout = {} }; components[host] = default_component_handler; local ok, err = modulemanager.load(host, host_config.core.component_module); if not ok then log("error", "Error loading %s component %s: %s", tostring(host_config.core.component_module), tostring(host), tostring(err)); else log("debug", "Activated %s component: %s", host_config.core.component_module, host); end end end end eventmanager.add_event_hook("server-starting", load_enabled_components); function handle_stanza(origin, stanza) local node, host = jid_split(stanza.attr.to); local component = nil; if not component then component = components[stanza.attr.to]; end -- hack to allow hooking node@server/resource and server/resource if not component then component = components[node.."@"..host]; end -- hack to allow hooking node@server if not component then component = components[host]; end if component then log("debug", "%s stanza being handled by component: %s", stanza.name, host); component(origin, stanza, hosts[host]); else log("error", "Component manager recieved a stanza for a non-existing component: " .. stanza.attr.to); end end function create_component(host, component) -- TODO check for host well-formedness return { type = "component", host = host, connected = true, s2sout = {} }; end function register_component(host, component, session) if not hosts[host] or (hosts[host].type == 'component' and not hosts[host].connected) then components[host] = component; hosts[host] = session or create_component(host, component); -- add to disco_items if not(host:find("@", 1, true) or host:find("/", 1, true)) and host:find(".", 1, true) then disco_items:set(host:sub(host:find(".", 1, true)+1), host, true); end -- FIXME only load for a.b.c if b.c has dialback, and/or check in config modulemanager.load(host, "dialback"); log("debug", "component added: "..host); return session or hosts[host]; else log("error", "Attempt to set component for existing host: "..host); end end function deregister_component(host) if components[host] then modulemanager.unload(host, "dialback"); hosts[host].connected = nil; local host_config = configmanager.getconfig()[host]; if host_config and ((host_config.core.enabled == nil or host_config.core.enabled) and type(host_config.core.component_module) == "string") then -- Set default handler components[host] = default_component_handler; else -- Component not in config, or disabled, remove hosts[host] = nil; components[host] = nil; end -- remove from disco_items if not(host:find("@", 1, true) or host:find("/", 1, true)) and host:find(".", 1, true) then disco_items:remove(host:sub(host:find(".", 1, true)+1), host); end log("debug", "component removed: "..host); return true; else log("error", "Attempt to remove component for non-existing host: "..host); end end function set_component_handler(host, handler) components[host] = handler; end return _M;