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",
21 default_ns = "jabber:server",
22 streamopened = s2s_streamopened, streamclosed = s2s_streamclosed, handlestanza = core_process_stanza };
24 function stream_callbacks.error(session, error, data)
25 if error == "no-stream" then
26 session:close("invalid-namespace");
28 session.log("debug", "Server-to-server XML parse error: %s", tostring(error));
29 session:close("xml-not-well-formed");
33 local function handleerr(err) log("error", "Traceback[s2s]: %s: %s", tostring(err), debug.traceback()); end
34 function stream_callbacks.handlestanza(a, b)
35 xpcall(function () core_process_stanza(a, b) end, handleerr);
38 local connlisteners_register = require "net.connlisteners".register;
40 local t_insert = table.insert;
41 local t_concat = table.concat;
42 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
43 local m_random = math.random;
44 local format = string.format;
45 local sm_new_session, sm_destroy_session = sessionmanager.new_session, sessionmanager.destroy_session; --import("core.sessionmanager", "new_session", "destroy_session");
49 local xmppserver = { default_port = 5269, default_mode = "*a" };
51 -- These are session methods --
53 local function session_reset_stream(session)
55 local parser = lxp.new(init_xmlhandlers(session, stream_callbacks), "|");
56 session.parser = parser;
58 session.notopen = true;
60 function session.data(conn, data)
61 local ok, err = parser:parse(data);
62 if ok then return; end
63 session:close("xml-not-well-formed");
70 local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'};
71 local function session_close(session, reason)
72 local log = session.log or log;
75 if type(reason) == "string" then -- assume stream error
76 log("info", "Disconnecting %s[%s], <stream:error> is: %s", session.host or "(unknown host)", session.type, reason);
77 session.sends2s(st.stanza("stream:error"):tag(reason, {xmlns = 'urn:ietf:params:xml:ns:xmpp-streams' }));
78 elseif type(reason) == "table" then
79 if reason.condition then
80 local stanza = st.stanza("stream:error"):tag(reason.condition, stream_xmlns_attr):up();
82 stanza:tag("text", stream_xmlns_attr):text(reason.text):up();
85 stanza:add_child(reason.extra);
87 log("info", "Disconnecting %s[%s], <stream:error> is: %s", session.host or "(unknown host)", session.type, tostring(stanza));
88 session.sends2s(stanza);
89 elseif reason.name then -- a stanza
90 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));
91 session.sends2s(reason);
95 session.sends2s("</stream:stream>");
97 xmppserver.disconnect(session.conn, "stream error");
102 -- End of session methods --
104 function xmppserver.listener(conn, data)
105 local session = sessions[conn];
107 session = s2s_new_incoming(conn);
108 sessions[conn] = session;
110 -- Logging functions --
113 local conn_name = "s2sin"..tostring(conn):match("[a-f0-9]+$");
114 session.log = logger.init(conn_name);
116 session.log("info", "Incoming s2s connection");
118 session.reset_stream = session_reset_stream;
119 session.close = session_close;
121 session_reset_stream(session); -- Initialise, ready for use
123 session.dispatch_stanza = stream_callbacks.handlestanza;
126 session.data(conn, data);
130 function xmppserver.disconnect(conn, err)
131 local session = sessions[conn];
133 if err and err ~= "closed" and session.srv_hosts then
134 (session.log or log)("debug", "s2s connection closed unexpectedly");
135 if s2s_attempt_connect(session, err) then
136 (session.log or log)("debug", "...so we're going to try again");
137 return; -- Session lives for now
140 (session.log or log)("info", "s2s disconnected: %s->%s (%s)", tostring(session.from_host), tostring(session.to_host), tostring(err));
141 s2s_destroy_session(session);
142 sessions[conn] = nil;
144 collectgarbage("collect");
148 function xmppserver.register_outgoing(conn, session)
149 session.direction = "outgoing";
150 sessions[conn] = session;
152 session.reset_stream = session_reset_stream;
153 session_reset_stream(session); -- Initialise, ready for use
155 --local function handleerr(err) print("Traceback:", err, debug.traceback()); end
156 --session.stanza_dispatch = function (stanza) return select(2, xpcall(function () return core_process_stanza(session, stanza); end, handleerr)); end
159 connlisteners_register("xmppserver", xmppserver);
162 -- We need to perform some initialisation when a connection is created
163 -- We also need to perform that same initialisation at other points (SASL, TLS, ...)
165 -- ...and we need to handle data
166 -- ...and record all sessions associated with connections