Tue, 13 Jan 2009 22:37:07 +0500
modulemanager: Added reload support, with callbacks for saving and restoring state
-- Prosody IM v0.2 -- Copyright (C) 2008 Matthew Wild -- Copyright (C) 2008 Waqas Hussain -- -- This program is free software; you can redistribute it and/or -- modify it under the terms of the GNU General Public License -- as published by the Free Software Foundation; either version 2 -- of the License, or (at your option) any later version. -- -- This program is distributed in the hope that it will be useful, -- but WITHOUT ANY WARRANTY; without even the implied warranty of -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -- GNU General Public License for more details. -- -- You should have received a copy of the GNU General Public License -- along with this program; if not, write to the Free Software -- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. -- local logger = require "logger"; local lxp = require "lxp" local init_xmlhandlers = require "core.xmlhandlers" local sm_new_session = require "core.sessionmanager".new_session; local s2s_new_incoming = require "core.s2smanager".new_incoming; local s2s_streamopened = require "core.s2smanager".streamopened; local s2s_streamclosed = require "core.s2smanager".streamclosed; local s2s_destroy_session = require "core.s2smanager".destroy_session; local s2s_attempt_connect = require "core.s2smanager".attempt_connection; local stream_callbacks = { stream_tag = "http://etherx.jabber.org/streams|stream", streamopened = s2s_streamopened, streamclosed = s2s_streamclosed, handlestanza = core_process_stanza }; function stream_callbacks.error(session, error, data) if error == "no-stream" then session:close("invalid-namespace"); else session.log("debug", "Server-to-server XML parse error: %s", tostring(error)); session:close("xml-not-well-formed"); end end local function handleerr(err) log("error", "Traceback[s2s]: %s: %s", tostring(err), debug.traceback()); end function stream_callbacks.handlestanza(a, b) xpcall(function () core_process_stanza(a, b) end, handleerr); end local connlisteners_register = require "net.connlisteners".register; 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 sm_new_session, sm_destroy_session = sessionmanager.new_session, sessionmanager.destroy_session; --import("core.sessionmanager", "new_session", "destroy_session"); local st = stanza; local sessions = {}; local xmppserver = { default_port = 5269, default_mode = "*a" }; -- These are session methods -- local function session_reset_stream(session) -- Reset stream local parser = lxp.new(init_xmlhandlers(session, stream_callbacks), "|"); session.parser = parser; session.notopen = true; function session.data(conn, data) local ok, err = parser:parse(data); if ok then return; end session:close("xml-not-well-formed"); end return true; end local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'}; local function session_close(session, reason) local log = session.log or log; if session.conn then if reason then if type(reason) == "string" then -- assume stream error log("info", "Disconnecting %s[%s], <stream:error> is: %s", session.host or "(unknown host)", session.type, reason); session.sends2s(st.stanza("stream:error"):tag(reason, {xmlns = 'urn:ietf:params:xml:ns:xmpp-streams' })); elseif type(reason) == "table" then if reason.condition then local stanza = st.stanza("stream:error"):tag(reason.condition, stream_xmlns_attr):up(); if reason.text then stanza:tag("text", stream_xmlns_attr):text(reason.text):up(); end if reason.extra then stanza:add_child(reason.extra); end log("info", "Disconnecting %s[%s], <stream:error> is: %s", session.host or "(unknown host)", session.type, tostring(stanza)); session.sends2s(stanza); elseif reason.name then -- a stanza 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)); session.sends2s(reason); end end end session.sends2s("</stream:stream>"); session.conn.close(); xmppserver.disconnect(session.conn, "stream error"); end end -- End of session methods -- function xmppserver.listener(conn, data) local session = sessions[conn]; if not session then session = s2s_new_incoming(conn); sessions[conn] = session; -- Logging functions -- local conn_name = "s2sin"..tostring(conn):match("[a-f0-9]+$"); session.log = logger.init(conn_name); session.log("info", "Incoming s2s connection"); session.reset_stream = session_reset_stream; session.close = session_close; session_reset_stream(session); -- Initialise, ready for use session.dispatch_stanza = stream_callbacks.handlestanza; end if data then session.data(conn, data); end end function xmppserver.disconnect(conn, err) local session = sessions[conn]; if session then if err and err ~= "closed" and session.srv_hosts then if s2s_attempt_connect(session, err) then return; -- Session lives for now end end (session.log or log)("info", "s2s disconnected: %s->%s (%s)", tostring(session.from_host), tostring(session.to_host), tostring(err)); s2s_destroy_session(session); sessions[conn] = nil; session = nil; collectgarbage("collect"); end end function xmppserver.register_outgoing(conn, session) session.direction = "outgoing"; sessions[conn] = session; session.reset_stream = session_reset_stream; session_reset_stream(session); -- Initialise, ready for use --local function handleerr(err) print("Traceback:", err, debug.traceback()); end --session.stanza_dispatch = function (stanza) return select(2, xpcall(function () return core_process_stanza(session, stanza); end, handleerr)); end end connlisteners_register("xmppserver", xmppserver); -- We need to perform some initialisation when a connection is created -- We also need to perform that same initialisation at other points (SASL, TLS, ...) -- ...and we need to handle data -- ...and record all sessions associated with connections