require "util.stanza" local st = stanza; local t_concat = table.concat; local format = string.format; function init_stanza_dispatcher(session) local iq_handlers = {}; local session_log = session.log; local log = function (type, msg) session_log(type, "stanza_dispatcher", msg); end local send = session.send; local send_to; do local _send_to = session.send_to; send_to = function (...) _send_to(session, ...); end end iq_handlers["jabber:iq:auth"] = function (stanza) local username = stanza.tags[1]:child_with_name("username"); local password = stanza.tags[1]:child_with_name("password"); local resource = stanza.tags[1]:child_with_name("resource"); if not (username and password and resource) then local reply = st.reply(stanza); send(reply:query("jabber:iq:auth") :tag("username"):up() :tag("password"):up() :tag("resource"):up()); return true; else username, password, resource = t_concat(username), t_concat(password), t_concat(resource); local reply = st.reply(stanza); require "core.usermanager" if usermanager.validate_credentials(session.host, username, password) then -- Authentication successful! session.username = username; session.resource = resource; session.full_jid = username.."@"..session.host.."/"..session.resource; if not hosts[session.host].sessions[username] then hosts[session.host].sessions[username] = { sessions = {} }; end hosts[session.host].sessions[username].sessions[resource] = session; send(st.reply(stanza)); return true; else local reply = st.reply(stanza); reply.attr.type = "error"; reply:tag("error", { code = "401", type = "auth" }) :tag("not-authorized", { xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas" }); send(reply); return true; end end end iq_handlers["jabber:iq:roster"] = function (stanza) if stanza.attr.type == "get" then session.roster = session.roster or rostermanager.getroster(session.username, session.host); if session.roster == false then send(st.reply(stanza) :tag("error", { type = "wait" }) :tag("internal-server-error", { xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"})); return true; else session.roster = session.roster or {}; end local roster = st.reply(stanza) :query("jabber:iq:roster"); for jid in pairs(session.roster) do roster:tag("item", { jid = jid, subscription = "none" }):up(); end send(roster); return true; end end return function (stanza) log("info", "--> "..tostring(stanza)); if (not stanza.attr.to) or (hosts[stanza.attr.to] and hosts[stanza.attr.to].type == "local") then if stanza.name == "iq" then if not stanza.tags[1] then log("warn", "<iq> without child is invalid"); return; end if not stanza.attr.id then log("warn", "<iq> without id attribute is invalid"); end local xmlns = (stanza.tags[1].attr and stanza.tags[1].attr.xmlns) or nil; if not xmlns then log("warn", "Child of <iq> has no xmlns - invalid"); return; end if (((not stanza.attr.to) or stanza.attr.to == session.host or stanza.attr.to:match("@[^/]+$")) and (stanza.attr.type == "get" or stanza.attr.type == "set")) then -- Stanza sent to us if iq_handlers[xmlns] then if iq_handlers[xmlns](stanza) then return; end; end log("warn", "Unhandled namespace: "..xmlns); send(format("<iq type='error' id='%s'><error type='cancel'><service-unavailable/></error></iq>", stanza.attr.id)); return; end end if not session.username then log("warn", "Attempt to use an unauthed stream!"); return; end if stanza.name == "presence" then if session.roster then local initial_presence = not session.last_presence; session.last_presence = stanza; -- Broadcast presence and probes local broadcast = st.presence({ from = session.full_jid, type = stanza.attr.type }); --local probe = st.presence { from = broadcast.attr.from, type = "probe" }; for child in stanza:childtags() do broadcast:add_child(child); end for contact_jid in pairs(session.roster) do broadcast.attr.to = contact_jid; send_to(contact_jid, broadcast); if initial_presence then local node, host = jid.split(contact_jid); if hosts[host] and hosts[host].type == "local" then local contact = hosts[host].sessions[node] if contact then local pres = st.presence { to = session.full_jid }; for resource, contact_session in pairs(contact.sessions) do if contact_session.last_presence then pres.tags = contact_session.last_presence.tags; pres.attr.from = contact_session.full_jid; send(pres); end end end --FIXME: Do we send unavailable if they are offline? else probe.attr.to = contact; send_to(contact, probe); end end end -- Probe for our contacts' presence end end elseif session.username then --end --if stanza.attr.to and ((not hosts[stanza.attr.to]) or hosts[stanza.attr.to].type ~= "local") then -- Need to route stanza stanza.attr.from = session.username.."@"..session.host; session:send_to(stanza.attr.to, stanza); end end end