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 log = logger.init("xmppclient_listener");
13 local lxp = require "lxp"
14 local init_xmlhandlers = require "core.xmlhandlers"
15 local sm_new_session = require "core.sessionmanager".new_session;
17 local connlisteners_register = require "net.connlisteners".register;
19 local t_insert = table.insert;
20 local t_concat = table.concat;
21 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
22 local m_random = math.random;
23 local format = string.format;
24 local sessionmanager = require "core.sessionmanager";
25 local sm_new_session, sm_destroy_session = sessionmanager.new_session, sessionmanager.destroy_session;
26 local sm_streamopened = sessionmanager.streamopened;
27 local sm_streamclosed = sessionmanager.streamclosed;
28 local st = require "util.stanza";
30 local stream_callbacks = { stream_tag = "http://etherx.jabber.org/streams|stream",
31 default_ns = "jabber:client",
32 streamopened = sm_streamopened, streamclosed = sm_streamclosed, handlestanza = core_process_stanza };
34 function stream_callbacks.error(session, error, data)
35 if error == "no-stream" then
36 session.log("debug", "Invalid opening stream header");
37 session:close("invalid-namespace");
38 elseif session.close then
39 (session.log or log)("debug", "Client XML parse error: %s", tostring(error));
40 session:close("xml-not-well-formed");
44 local function handleerr(err) log("error", "Traceback[c2s]: %s: %s", tostring(err), debug.traceback()); end
45 function stream_callbacks.handlestanza(a, b)
46 xpcall(function () core_process_stanza(a, b) end, handleerr);
50 local xmppclient = { default_port = 5222, default_mode = "*a" };
52 -- These are session methods --
54 local function session_reset_stream(session)
56 local parser = lxp.new(init_xmlhandlers(session, stream_callbacks), "|");
57 session.parser = parser;
59 session.notopen = true;
61 function session.data(conn, data)
62 local ok, err = parser:parse(data);
63 if ok then return; end
64 session:close("xml-not-well-formed");
71 local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'};
72 local function session_close(session, reason)
73 local log = session.log or log;
76 if type(reason) == "string" then -- assume stream error
77 log("info", "Disconnecting client, <stream:error> is: %s", reason);
78 session.send(st.stanza("stream:error"):tag(reason, {xmlns = 'urn:ietf:params:xml:ns:xmpp-streams' }));
79 elseif type(reason) == "table" then
80 if reason.condition then
81 local stanza = st.stanza("stream:error"):tag(reason.condition, stream_xmlns_attr):up();
83 stanza:tag("text", stream_xmlns_attr):text(reason.text):up();
86 stanza:add_child(reason.extra);
88 log("info", "Disconnecting client, <stream:error> is: %s", tostring(stanza));
90 elseif reason.name then -- a stanza
91 log("info", "Disconnecting client, <stream:error> is: %s", tostring(reason));
96 session.send("</stream:stream>");
98 xmppclient.disconnect(session.conn, (reason and reason.condition) or reason or "session closed");
103 -- End of session methods --
105 function xmppclient.listener(conn, data)
106 local session = sessions[conn];
108 session = sm_new_session(conn);
109 sessions[conn] = session;
111 -- Logging functions --
113 local conn_name = "c2s"..tostring(conn):match("[a-f0-9]+$");
114 session.log = logger.init(conn_name);
116 session.log("info", "Client connected");
118 -- Client is using legacy SSL (otherwise mod_tls sets this flag)
120 session.secure = true;
123 session.reset_stream = session_reset_stream;
124 session.close = session_close;
126 session_reset_stream(session); -- Initialise, ready for use
128 session.dispatch_stanza = stream_callbacks.handlestanza;
131 session.data(conn, data);
135 function xmppclient.disconnect(conn, err)
136 local session = sessions[conn];
138 (session.log or log)("info", "Client disconnected: %s", err);
139 sm_destroy_session(session, err);
140 sessions[conn] = nil;
142 collectgarbage("collect");
146 connlisteners_register("xmppclient", xmppclient);