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require "luarocks.require"
server = require "net.server"
require "socket"
require "ssl"
require "lxp"
function log(type, area, message)
print(type, area, message);
end
dofile "lxmppd.cfg"
sessions = {};
require "core.stanza_dispatch"
require "core.xmlhandlers"
require "core.rostermanager"
require "core.offlinemessage"
require "core.modulemanager"
require "core.usermanager"
require "core.sessionmanager"
require "core.stanza_router"
require "util.stanza"
require "util.jid"
-- Locals for faster access --
local t_insert = table.insert;
local t_concat = table.concat;
local t_concatall = function (t, sep) local tt = {}; for _, s in ipairs(t) do t_insert(tt, tostring(s)); end return t_concat(tt, sep); end
local m_random = math.random;
local format = string.format;
local st = stanza;
local init_xmlhandlers = xmlhandlers.init_xmlhandlers;
------------------------------
local hosts, users = hosts, users;
function connect_host(host)
hosts[host] = { type = "remote", sendbuffer = {} };
end
local function route_stanza(stanza)
if not stanza.attr.to then
-- Has no 'to' attribute, handle internally
end
local node, host, resource = jid.split(stanza.attr.to);
if host and hosts[host] and hosts[host].type == "local" then
-- Is a local host, handle internally
else
-- Is not for us or a local user, route accordingly
end
end
local function send_to(session, to, stanza)
local node, host, resource = jid.split(to);
if not hosts[host] then
-- s2s
elseif hosts[host].type == "local" then
print(" ...is to a local user")
local destuser = hosts[host].sessions[node];
if destuser and destuser.sessions then
if not destuser.sessions[resource] then
local best_session;
for resource, session in pairs(destuser.sessions) do
if not best_session then best_session = session;
elseif session.priority >= best_session.priority and session.priority >= 0 then
best_session = session;
end
end
if not best_session then
offlinemessage.new(node, host, stanza);
else
print("resource '"..resource.."' was not online, have chosen to send to '"..best_session.username.."@"..best_session.host.."/"..best_session.resource.."'");
resource = best_session.resource;
end
end
if destuser.sessions[resource] == session then
log("warn", "core", "Attempt to send stanza to self, dropping...");
else
print("...sending...", tostring(stanza));
--destuser.sessions[resource].conn.write(tostring(data));
print(" to conn ", destuser.sessions[resource].conn);
destuser.sessions[resource].conn.write(tostring(stanza));
print("...sent")
end
elseif stanza.name == "message" then
print(" ...will be stored offline");
offlinemessage.new(node, host, stanza);
elseif stanza.name == "iq" then
print(" ...is an iq");
session.send(st.reply(stanza)
:tag("error", { type = "cancel" })
:tag("service-unavailable", { xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas" }));
end
print(" ...done routing");
end
end
function handler(conn, data, err)
local session = sessions[conn];
if not session then
sessions[conn] = sessionmanager.new_session(conn);
session = sessions[conn];
-- Logging functions --
local mainlog, log = log;
do
local conn_name = tostring(conn):match("%w+$");
log = function (type, area, message) mainlog(type, conn_name, message); end
--log = function () end
end
local print = function (...) log("info", "core", t_concatall({...}, "\t")); end
session.log = log;
print("Client connected");
session.stanza_dispatch = function (stanza) return core_process_stanza(session, stanza); end
session.xml_handlers = init_xmlhandlers(session);
session.parser = lxp.new(session.xml_handlers, ":");
function session.disconnect(err)
if session.last_presence and session.last_presence.attr.type ~= "unavailable" then
local pres = st.presence{ type = "unavailable" };
if err == "closed" then err = "connection closed"; end
pres:tag("status"):text("Disconnected: "..err);
session.stanza_dispatch(pres);
end
if session.username then
hosts[session.host].sessions[session.username] = nil;
end
session = nil;
print("Disconnected: "..err);
collectgarbage("collect");
end
end
if data then
session.parser:parse(data);
end
--log("info", "core", "Client disconnected, connection closed");
end
function disconnect(conn, err)
sessions[conn].disconnect(err);
sessions[conn] = nil;
end
modulemanager.loadall();
setmetatable(_G, { __index = function (t, k) print("WARNING: ATTEMPT TO READ A NIL GLOBAL!!!", k); error("Attempt to read a non-existent global. Naughty boy.", 2); end, __newindex = function (t, k, v) print("ATTEMPT TO SET A GLOBAL!!!!", tostring(k).." = "..tostring(v)); error("Attempt to set a global. Naughty boy.", 2); end }) --]][][[]][];
local protected_handler = function (conn, data, err) local success, ret = pcall(handler, conn, data, err); if not success then print("ERROR on "..tostring(conn)..": "..ret); conn:close(); end end;
local protected_disconnect = function (conn, err) local success, ret = pcall(disconnect, conn, err); if not success then print("ERROR on "..tostring(conn).." disconnect: "..ret); conn:close(); end end;
server.add( { listener = protected_handler, disconnect = protected_disconnect }, 5222, "*", 1, nil ) -- server.add will send a status message
server.add( { listener = protected_handler, disconnect = protected_disconnect }, 5223, "*", 1, ssl_ctx ) -- server.add will send a status message
server.loop();
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