X-Git-Url: https://git.enpas.org/?a=blobdiff_plain;f=plugins%2Fmod_bosh.lua;h=bc31b3a13c8140de5424763277d4bfbd20b57628;hb=5661de59c6947c3b8a8c13d833f9138ef41ff8a8;hp=776c3145f38ecca629e2efcbe32bd6d0b68f921f;hpb=0c592983548c1065da849c11d1385ba87c3bd75e;p=prosody.git diff --git a/plugins/mod_bosh.lua b/plugins/mod_bosh.lua index 776c3145..bc31b3a1 100644 --- a/plugins/mod_bosh.lua +++ b/plugins/mod_bosh.lua @@ -1,50 +1,76 @@ +-- Prosody IM +-- Copyright (C) 2008-2009 Matthew Wild +-- Copyright (C) 2008-2009 Waqas Hussain +-- +-- This project is MIT/X11 licensed. Please see the +-- COPYING file in the source package for more information. +-- module.host = "*" -- Global module +local hosts = _G.hosts; local lxp = require "lxp"; local init_xmlhandlers = require "core.xmlhandlers" local server = require "net.server"; local httpserver = require "net.httpserver"; local sm = require "core.sessionmanager"; +local sm_destroy_session = sm.destroy_session; local new_uuid = require "util.uuid".generate; local fire_event = require "core.eventmanager".fire_event; local core_process_stanza = core_process_stanza; local st = require "util.stanza"; -local log = require "util.logger".init("bosh"); -local stream_callbacks = { stream_tag = "http://jabber.org/protocol/httpbind|body" }; +local logger = require "util.logger"; +local log = logger.init("mod_bosh"); local xmlns_bosh = "http://jabber.org/protocol/httpbind"; -- (hard-coded into a literal in session.send) +local stream_callbacks = { stream_tag = "http://jabber.org/protocol/httpbind\1body", default_ns = xmlns_bosh }; -local BOSH_DEFAULT_HOLD = 1; -local BOSH_DEFAULT_INACTIVITY = 30; -local BOSH_DEFAULT_POLLING = 5; -local BOSH_DEFAULT_REQUESTS = 2; -local BOSH_DEFAULT_MAXPAUSE = 120; +local BOSH_DEFAULT_HOLD = tonumber(module:get_option("bosh_default_hold")) or 1; +local BOSH_DEFAULT_INACTIVITY = tonumber(module:get_option("bosh_max_inactivity")) or 60; +local BOSH_DEFAULT_POLLING = tonumber(module:get_option("bosh_max_polling")) or 5; +local BOSH_DEFAULT_REQUESTS = tonumber(module:get_option("bosh_max_requests")) or 2; +local BOSH_DEFAULT_MAXPAUSE = tonumber(module:get_option("bosh_max_pause")) or 300; + +local default_headers = { ["Content-Type"] = "text/xml; charset=utf-8" }; +local session_close_reply = { headers = default_headers, body = st.stanza("body", { xmlns = xmlns_bosh, type = "terminate" }), attr = {} }; local t_insert, t_remove, t_concat = table.insert, table.remove, table.concat; local os_time = os.time; local sessions = {}; +local inactive_sessions = {}; -- Sessions which have no open requests --- Used to respond to idle sessions +-- Used to respond to idle sessions (those with waiting requests) local waiting_requests = {}; function on_destroy_request(request) waiting_requests[request] = nil; + local session = sessions[request.sid]; + if session then + local requests = session.requests; + for i,r in pairs(requests) do + if r == request then requests[i] = nil; break; end + end + + -- If this session now has no requests open, mark it as inactive + if #requests == 0 and session.bosh_max_inactive and not inactive_sessions[session] then + inactive_sessions[session] = os_time(); + (session.log or log)("debug", "BOSH session marked as inactive at %d", inactive_sessions[session]); + end + end end function handle_request(method, body, request) if (not body) or request.method ~= "POST" then - --return { status = "200 OK", headers = { ["Content-Type"] = "text/html" }, body = "You don't look like a BOSH client to me... what do you want?" }; return "You really don't look like a BOSH client to me... what do you want?"; end if not method then log("debug", "Request %s suffered error %s", tostring(request.id), body); return; end - log("debug", "Handling new request %s: %s\n----------", request.id, tostring(body)); + --log("debug", "Handling new request %s: %s\n----------", request.id, tostring(body)); request.notopen = true; request.log = log; - local parser = lxp.new(init_xmlhandlers(request, stream_callbacks), "|"); + local parser = lxp.new(init_xmlhandlers(request, stream_callbacks), "\1"); parser:parse(body); @@ -60,19 +86,16 @@ function handle_request(method, body, request) log("debug", "...sending what is in the buffer") session.send(t_concat(session.send_buffer)); session.send_buffer = {}; - return; else -- or an empty response log("debug", "...sending an empty response"); session.send(""); - return; end elseif #session.send_buffer > 0 then log("debug", "Session has data in the send buffer, will send now.."); local resp = t_concat(session.send_buffer); session.send_buffer = {}; session.send(resp); - return; end if not request.destroyed and session.bosh_wait then @@ -81,34 +104,55 @@ function handle_request(method, body, request) waiting_requests[request] = true; end - log("debug", "Had nothing to say, so leaving request unanswered for now"); + log("debug", "Have nothing to say, so leaving request unanswered for now"); return true; end end + local function bosh_reset_stream(session) session.notopen = true; end -local function bosh_close_stream(session, reason) end + +local function bosh_close_stream(session, reason) + (session.log or log)("info", "BOSH client disconnected"); + session_close_reply.attr.condition = reason; + for _, held_request in ipairs(session.requests) do + held_request:send(session_close_reply); + held_request:destroy(); + end + sessions[session.sid] = nil; + sm_destroy_session(session); +end function stream_callbacks.streamopened(request, attr) - print("Attr:") - for k,v in pairs(attr) do print("", k, v); end log("debug", "BOSH body open (sid: %s)", attr.sid); local sid = attr.sid if not sid then - -- TODO: Sanity checks here (rid, to, known host, etc.) + -- New session request request.notopen = nil; -- Signals that we accept this opening tag + -- TODO: Sanity checks here (rid, to, known host, etc.) + if not hosts[attr.to] then + -- Unknown host + log("debug", "BOSH client tried to connect to unknown host: %s", tostring(attr.to)); + session_close_reply.body.attr.condition = "host-unknown"; + request:send(session_close_reply); + request.notopen = nil + return; + end + -- New session - sid = tostring(new_uuid()); - local session = { type = "c2s_unauthed", conn = {}, sid = sid, rid = attr.rid, host = attr.to, bosh_version = attr.ver, bosh_wait = attr.wait, streamid = sid, - bosh_hold = BOSH_DEFAULT_HOLD, - requests = { }, send_buffer = {}, reset_stream = bosh_reset_stream, close = bosh_close_stream }; + sid = new_uuid(); + local session = { type = "c2s_unauthed", conn = {}, sid = sid, rid = tonumber(attr.rid), host = attr.to, bosh_version = attr.ver, bosh_wait = attr.wait, streamid = sid, + bosh_hold = BOSH_DEFAULT_HOLD, bosh_max_inactive = BOSH_DEFAULT_INACTIVITY, + requests = { }, send_buffer = {}, reset_stream = bosh_reset_stream, close = bosh_close_stream, + dispatch_stanza = core_process_stanza, log = logger.init("bosh"..sid), secure = request.secure }; sessions[sid] = session; + log("info", "New BOSH session, assigned it sid '%s'", sid); local r, send_buffer = session.requests, session.send_buffer; - local response = { } + local response = { headers = default_headers } function session.send(s) - log("debug", "Sending BOSH data: %s", tostring(s)); + --log("debug", "Sending BOSH data: %s", tostring(s)); local oldest_request = r[1]; while oldest_request and oldest_request.destroyed do t_remove(r, 1); @@ -116,10 +160,10 @@ function stream_callbacks.streamopened(request, attr) oldest_request = r[1]; end if oldest_request then - log("debug", "We have an open request, so using that to send with"); + log("debug", "We have an open request, so sending on that"); response.body = t_concat{"", tostring(s), "" }; oldest_request:send(response); - log("debug", "Sent"); + --log("debug", "Sent"); if oldest_request.stayopen then if #r>1 then -- Move front request to back @@ -145,10 +189,10 @@ function stream_callbacks.streamopened(request, attr) fire_event("stream-features", session, features); --xmpp:version='1.0' xmlns:xmpp='urn:xmpp:xbosh' local response = st.stanza("body", { xmlns = xmlns_bosh, - inactivity = "30", polling = "5", requests = "2", hold = tostring(session.bosh_hold), maxpause = "120", - sid = sid, ver = '1.6', from = session.host, secure = 'true', ["xmpp:version"] = "1.0", + inactivity = tostring(BOSH_DEFAULT_INACTIVITY), polling = tostring(BOSH_DEFAULT_POLLING), requests = tostring(BOSH_DEFAULT_REQUESTS), hold = tostring(session.bosh_hold), maxpause = "120", + sid = sid, authid = sid, ver = '1.6', from = session.host, secure = 'true', ["xmpp:version"] = "1.0", ["xmlns:xmpp"] = "urn:xmpp:xbosh", ["xmlns:stream"] = "http://etherx.jabber.org/streams" }):add_child(features); - request:send(tostring(response)); + request:send{ headers = default_headers, body = tostring(response) }; request.sid = sid; return; @@ -158,11 +202,39 @@ function stream_callbacks.streamopened(request, attr) if not session then -- Unknown sid log("info", "Client tried to use sid '%s' which we don't know about", sid); - request:send(tostring(st.stanza("body", { xmlns = xmlns_bosh, type = "terminate", condition = "item-not-found" }))); + request:send{ headers = default_headers, body = tostring(st.stanza("body", { xmlns = xmlns_bosh, type = "terminate", condition = "item-not-found" })) }; + request.notopen = nil; + return; + end + + if session.rid then + local rid = tonumber(attr.rid); + local diff = rid - session.rid; + if diff > 1 then + session.log("warn", "rid too large (means a request was lost). Last rid: %d New rid: %s", session.rid, attr.rid); + elseif diff <= 0 then + -- Repeated, ignore + session.log("debug", "rid repeated (on request %s), ignoring: %d", request.id, session.rid); + request.notopen = nil; + t_insert(session.requests, request); + return; + end + session.rid = rid; + end + + if attr.type == "terminate" then + -- Client wants to end this session + session:close(); request.notopen = nil; return; end + -- If session was inactive, make sure it is now marked as not + if #session.requests == 0 then + (session.log or log)("debug", "BOSH client now active again at %d", os_time()); + inactive_sessions[session] = nil; + end + if session.notopen then local features = st.stanza("stream:features"); fire_event("stream-features", session, features); @@ -176,18 +248,20 @@ function stream_callbacks.streamopened(request, attr) end function stream_callbacks.handlestanza(request, stanza) - log("debug", "BOSH stanza received: %s\n", stanza:pretty_print()); + log("debug", "BOSH stanza received: %s\n", stanza:top_tag()); local session = sessions[request.sid]; if session then if stanza.attr.xmlns == xmlns_bosh then stanza.attr.xmlns = "jabber:client"; end + session.ip = request.handler:ip(); core_process_stanza(session, stanza); end end +local dead_sessions = {}; function on_timer() - log("debug", "Checking for requests soon to timeout..."); + -- log("debug", "Checking for requests soon to timeout..."); -- Identify requests timing out within the next few seconds local now = os_time() + 3; for request in pairs(waiting_requests) do @@ -198,14 +272,40 @@ function on_timer() if request.conn then sessions[request.sid].send(""); end - else - log("debug", "%s timing out in %ds [destroyed: %s]", request.id, request.reply_before - now, tostring(request.destroyed)); end - if not request.on_destroy then - log("warn", "%s has no on_destroy!", request.id); + end + + now = now - 3; + local n_dead_sessions = 0; + for session, inactive_since in pairs(inactive_sessions) do + if session.bosh_max_inactive then + if now - inactive_since > session.bosh_max_inactive then + (session.log or log)("debug", "BOSH client inactive too long, destroying session at %d", now); + sessions[session.sid] = nil; + inactive_sessions[session] = nil; + n_dead_sessions = n_dead_sessions + 1; + dead_sessions[n_dead_sessions] = session; + end + else + inactive_sessions[session] = nil; end end + + for i=1,n_dead_sessions do + local session = dead_sessions[i]; + dead_sessions[i] = nil; + sm_destroy_session(session, "BOSH client silent for over "..session.bosh_max_inactive.." seconds"); + end end -httpserver.new{ port = 5280, base = "http-bind", handler = handle_request, ssl = false} -server.addtimer(on_timer); \ No newline at end of file + +local function setup() + local ports = module:get_option("bosh_ports") or { 5280 }; + httpserver.new_from_config(ports, handle_request, { base = "http-bind" }); + server.addtimer(on_timer); +end +if prosody.start_time then -- already started + setup(); +else + prosody.events.add_handler("server-started", setup); +end