+local prosody = prosody;
+local log = require "util.logger".init("componentmanager");
+local configmanager = require "core.configmanager";
+local modulemanager = require "core.modulemanager";
+local jid_split = require "util.jid".split;
+local fire_event = require "core.eventmanager".fire_event;
+local events_new = require "util.events".new;
+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 = {};
+
+module "componentmanager"
+
+local function default_component_handler(origin, stanza)
+ log("warn", "Stanza being handled by default component, bouncing error");
+ if stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then
+ origin.send(st.error_reply(stanza, "wait", "service-unavailable", "Component unavailable"));
+ end
+end
+
+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] = create_component(host);
+ hosts[host].connected = false;
+ 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
+ fire_event("component-activated", host, host_config);
+ log("debug", "Activated %s component: %s", host_config.core.component_module, host);
+ end
+ end
+ end
+end
+
+prosody.events.add_handler("server-starting", load_enabled_components);
+
+function handle_stanza(origin, stanza)
+ local node, host = jid_split(stanza.attr.to);
+ local component = nil;
+ if host then
+ if node then component = components[node.."@"..host]; end -- hack to allow hooking node@server
+ if not component then component = components[host]; end
+ 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: "..tostring(stanza));
+ end
+end
+
+function create_component(host, component, events)
+ -- TODO check for host well-formedness
+ local ssl_ctx;
+ if host then
+ -- We need to find SSL context to use...
+ -- Discussion in prosody@ concluded that
+ -- 1 level back is usually enough by default
+ local base_host = host:gsub("^[^%.]+%.", "");
+ if hosts[base_host] then
+ ssl_ctx = hosts[base_host].ssl_ctx;
+ end
+ end
+ return { type = "component", host = host, connected = true, s2sout = {},
+ ssl_ctx = ssl_ctx, events = events or events_new() };
+end
+
+function register_component(host, component, session)
+ if not hosts[host] or (hosts[host].type == 'component' and not hosts[host].connected) then
+ local old_events = hosts[host] and hosts[host].events;
+
+ components[host] = component;
+ hosts[host] = session or create_component(host, component, old_events);
+
+ -- Add events object if not already one
+ if not hosts[host].events then
+ hosts[host].events = old_events or events_new();
+ end
+
+ -- 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
+ modulemanager.load(host, "dialback");
+ modulemanager.load(host, "tls");
+ 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
+
+function get_children(host)
+ return disco_items:get(host) or NULL;
+end