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.
11 local logger = require "logger";
12 local lxp = require "lxp"
13 local init_xmlhandlers = require "core.xmlhandlers"
14 local sm_new_session = require "core.sessionmanager".new_session;
15 local s2s_new_incoming = require "core.s2smanager".new_incoming;
16 local s2s_streamopened = require "core.s2smanager".streamopened;
17 local s2s_streamclosed = require "core.s2smanager".streamclosed;
18 local s2s_destroy_session = require "core.s2smanager".destroy_session;
19 local s2s_attempt_connect = require "core.s2smanager".attempt_connection;
20 local stream_callbacks = { stream_tag = "http://etherx.jabber.org/streams|stream", streamopened = s2s_streamopened, streamclosed = s2s_streamclosed, handlestanza = core_process_stanza };
22 function stream_callbacks.error(session, error, data)
23 if error == "no-stream" then
24 session:close("invalid-namespace");
26 session.log("debug", "Server-to-server XML parse error: %s", tostring(error));
27 session:close("xml-not-well-formed");
31 local function handleerr(err) log("error", "Traceback[s2s]: %s: %s", tostring(err), debug.traceback()); end
32 function stream_callbacks.handlestanza(a, b)
33 xpcall(function () core_process_stanza(a, b) end, handleerr);
36 local connlisteners_register = require "net.connlisteners".register;
38 local t_insert = table.insert;
39 local t_concat = table.concat;
40 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
41 local m_random = math.random;
42 local format = string.format;
43 local sm_new_session, sm_destroy_session = sessionmanager.new_session, sessionmanager.destroy_session; --import("core.sessionmanager", "new_session", "destroy_session");
47 local xmppserver = { default_port = 5269, default_mode = "*a" };
49 -- These are session methods --
51 local function session_reset_stream(session)
53 local parser = lxp.new(init_xmlhandlers(session, stream_callbacks), "|");
54 session.parser = parser;
56 session.notopen = true;
58 function session.data(conn, data)
59 local ok, err = parser:parse(data);
60 if ok then return; end
61 session:close("xml-not-well-formed");
68 local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'};
69 local function session_close(session, reason)
70 local log = session.log or log;
73 if type(reason) == "string" then -- assume stream error
74 log("info", "Disconnecting %s[%s], <stream:error> is: %s", session.host or "(unknown host)", session.type, reason);
75 session.sends2s(st.stanza("stream:error"):tag(reason, {xmlns = 'urn:ietf:params:xml:ns:xmpp-streams' }));
76 elseif type(reason) == "table" then
77 if reason.condition then
78 local stanza = st.stanza("stream:error"):tag(reason.condition, stream_xmlns_attr):up();
80 stanza:tag("text", stream_xmlns_attr):text(reason.text):up();
83 stanza:add_child(reason.extra);
85 log("info", "Disconnecting %s[%s], <stream:error> is: %s", session.host or "(unknown host)", session.type, tostring(stanza));
86 session.sends2s(stanza);
87 elseif reason.name then -- a stanza
88 log("info", "Disconnecting %s->%s[%s], <stream:error> is: %s", session.from_host or "(unknown host)", session.to_host or "(unknown host)", session.type, tostring(reason));
89 session.sends2s(reason);
93 session.sends2s("</stream:stream>");
95 xmppserver.disconnect(session.conn, "stream error");
100 -- End of session methods --
102 function xmppserver.listener(conn, data)
103 local session = sessions[conn];
105 session = s2s_new_incoming(conn);
106 sessions[conn] = session;
108 -- Logging functions --
111 local conn_name = "s2sin"..tostring(conn):match("[a-f0-9]+$");
112 session.log = logger.init(conn_name);
114 session.log("info", "Incoming s2s connection");
116 session.reset_stream = session_reset_stream;
117 session.close = session_close;
119 session_reset_stream(session); -- Initialise, ready for use
121 session.dispatch_stanza = stream_callbacks.handlestanza;
124 session.data(conn, data);
128 function xmppserver.disconnect(conn, err)
129 local session = sessions[conn];
131 if err and err ~= "closed" and session.srv_hosts then
132 if s2s_attempt_connect(session, err) then
133 return; -- Session lives for now
136 (session.log or log)("info", "s2s disconnected: %s->%s (%s)", tostring(session.from_host), tostring(session.to_host), tostring(err));
137 s2s_destroy_session(session);
138 sessions[conn] = nil;
140 collectgarbage("collect");
144 function xmppserver.register_outgoing(conn, session)
145 session.direction = "outgoing";
146 sessions[conn] = session;
148 session.reset_stream = session_reset_stream;
149 session_reset_stream(session); -- Initialise, ready for use
151 --local function handleerr(err) print("Traceback:", err, debug.traceback()); end
152 --session.stanza_dispatch = function (stanza) return select(2, xpcall(function () return core_process_stanza(session, stanza); end, handleerr)); end
155 connlisteners_register("xmppserver", xmppserver);
158 -- We need to perform some initialisation when a connection is created
159 -- We also need to perform that same initialisation at other points (SASL, TLS, ...)
161 -- ...and we need to handle data
162 -- ...and record all sessions associated with connections