Wed, 21 Oct 2009 13:59:54 +0100
connlisteners: Localize tostring, fixes possible traceback when LuaSec not installed
-- 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. -- local log = module._log; local require = require; local pairs, ipairs = pairs, ipairs; local t_concat, t_insert = table.concat, table.insert; local s_find = string.find; local tonumber = tonumber; local st = require "util.stanza"; local jid_split = require "util.jid".split; local jid_bare = require "util.jid".bare; local hosts = hosts; local rostermanager = require "core.rostermanager"; local sessionmanager = require "core.sessionmanager"; local offlinemanager = require "core.offlinemanager"; local _core_route_stanza = core_route_stanza; local core_route_stanza; function core_route_stanza(origin, stanza) if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error" then local node, host = jid_split(stanza.attr.to); host = hosts[host]; if node and host and host.type == "local" then handle_inbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to), core_route_stanza); return; end end _core_route_stanza(origin, stanza); end local function select_top_resources(user) local priority = 0; local recipients = {}; for _, session in pairs(user.sessions) do -- find resource with greatest priority if session.presence then -- TODO check active privacy list for session local p = session.priority; if p > priority then priority = p; recipients = {session}; elseif p == priority then t_insert(recipients, session); end end end return recipients; end local function recalc_resource_map(origin) local user = hosts[origin.host].sessions[origin.username]; user.top_resources = select_top_resources(user); if #user.top_resources == 0 then user.top_resources = nil; end end function handle_normal_presence(origin, stanza, core_route_stanza) local roster = origin.roster; local node, host = origin.username, origin.host; for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast to all resources if res ~= origin and res.presence then -- to resource stanza.attr.to = res.full_jid; core_route_stanza(origin, stanza); end end for jid, item in pairs(roster) do -- broadcast to all interested contacts if item.subscription == "both" or item.subscription == "from" then stanza.attr.to = jid; core_route_stanza(origin, stanza); end end if stanza.attr.type == nil and not origin.presence then -- initial presence local probe = st.presence({from = origin.full_jid, type = "probe"}); for jid, item in pairs(roster) do -- probe all contacts we are subscribed to if item.subscription == "both" or item.subscription == "to" then probe.attr.to = jid; core_route_stanza(origin, probe); end end for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast from all available resources if res ~= origin and res.presence then res.presence.attr.to = origin.full_jid; core_route_stanza(res, res.presence); res.presence.attr.to = nil; end end if roster.pending then -- resend incoming subscription requests for jid in pairs(roster.pending) do origin.send(st.presence({type="subscribe", from=jid})); -- TODO add to attribute? Use original? end end local request = st.presence({type="subscribe", from=origin.username.."@"..origin.host}); for jid, item in pairs(roster) do -- resend outgoing subscription requests if item.ask then request.attr.to = jid; core_route_stanza(origin, request); end end local offline = offlinemanager.load(node, host); if offline then for _, msg in ipairs(offline) do origin.send(msg); -- FIXME do we need to modify to/from in any way? end offlinemanager.deleteAll(node, host); end end if stanza.attr.type == "unavailable" then origin.presence = nil; if origin.priority then origin.priority = nil; recalc_resource_map(origin); end if origin.directed then for jid in pairs(origin.directed) do stanza.attr.to = jid; core_route_stanza(origin, stanza); end origin.directed = nil; end else origin.presence = stanza; local priority = stanza:child_with_name("priority"); if priority and #priority > 0 then priority = t_concat(priority); if s_find(priority, "^[+-]?[0-9]+$") then priority = tonumber(priority); if priority < -128 then priority = -128 end if priority > 127 then priority = 127 end else priority = 0; end else priority = 0; end if origin.priority ~= priority then origin.priority = priority; recalc_resource_map(origin); end end stanza.attr.to = nil; -- reset it end function send_presence_of_available_resources(user, host, jid, recipient_session, core_route_stanza) local h = hosts[host]; local count = 0; if h and h.type == "local" then local u = h.sessions[user]; if u then for k, session in pairs(u.sessions) do local pres = session.presence; if pres then pres.attr.to = jid; core_route_stanza(session, pres); pres.attr.to = nil; count = count + 1; end end end end log("debug", "broadcasted presence of "..count.." resources from "..user.."@"..host.." to "..jid); return count; end function handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza) local node, host = jid_split(from_bare); if to_bare == origin.username.."@"..origin.host then return; end -- No self contacts local st_from, st_to = stanza.attr.from, stanza.attr.to; stanza.attr.from, stanza.attr.to = from_bare, to_bare; log("debug", "outbound presence "..stanza.attr.type.." from "..from_bare.." for "..to_bare); if stanza.attr.type == "subscribe" then -- 1. route stanza -- 2. roster push (subscription = none, ask = subscribe) if rostermanager.set_contact_pending_out(node, host, to_bare) then rostermanager.roster_push(node, host, to_bare); end -- else file error core_route_stanza(origin, stanza); elseif stanza.attr.type == "unsubscribe" then -- 1. route stanza -- 2. roster push (subscription = none or from) if rostermanager.unsubscribe(node, host, to_bare) then rostermanager.roster_push(node, host, to_bare); -- FIXME do roster push when roster has in fact not changed? end -- else file error core_route_stanza(origin, stanza); elseif stanza.attr.type == "subscribed" then -- 1. route stanza -- 2. roster_push () -- 3. send_presence_of_available_resources if rostermanager.subscribed(node, host, to_bare) then rostermanager.roster_push(node, host, to_bare); end core_route_stanza(origin, stanza); send_presence_of_available_resources(node, host, to_bare, origin, core_route_stanza); elseif stanza.attr.type == "unsubscribed" then -- 1. route stanza -- 2. roster push (subscription = none or to) if rostermanager.unsubscribed(node, host, to_bare) then rostermanager.roster_push(node, host, to_bare); end core_route_stanza(origin, stanza); end stanza.attr.from, stanza.attr.to = st_from, st_to; end function handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza) local node, host = jid_split(to_bare); local st_from, st_to = stanza.attr.from, stanza.attr.to; stanza.attr.from, stanza.attr.to = from_bare, to_bare; log("debug", "inbound presence "..stanza.attr.type.." from "..from_bare.." for "..to_bare); if not node then log("debug", "dropping presence sent to host or invalid address '%s'", tostring(to_bare)); end if stanza.attr.type == "probe" then if rostermanager.is_contact_subscribed(node, host, from_bare) then if 0 == send_presence_of_available_resources(node, host, st_from, origin, core_route_stanza) then -- TODO send last recieved unavailable presence (or we MAY do nothing, which is fine too) end else core_route_stanza(origin, st.presence({from=to_bare, to=from_bare, type="unsubscribed"})); end elseif stanza.attr.type == "subscribe" then if rostermanager.is_contact_subscribed(node, host, from_bare) then core_route_stanza(origin, st.presence({from=to_bare, to=from_bare, type="subscribed"})); -- already subscribed -- Sending presence is not clearly stated in the RFC, but it seems appropriate if 0 == send_presence_of_available_resources(node, host, from_bare, origin, core_route_stanza) then -- TODO send last recieved unavailable presence (or we MAY do nothing, which is fine too) end else if not rostermanager.is_contact_pending_in(node, host, from_bare) then if rostermanager.set_contact_pending_in(node, host, from_bare) then sessionmanager.send_to_available_resources(node, host, stanza); end -- TODO else return error, unable to save end end elseif stanza.attr.type == "unsubscribe" then if rostermanager.process_inbound_unsubscribe(node, host, from_bare) then rostermanager.roster_push(node, host, from_bare); end elseif stanza.attr.type == "subscribed" then if rostermanager.process_inbound_subscription_approval(node, host, from_bare) then rostermanager.roster_push(node, host, from_bare); end elseif stanza.attr.type == "unsubscribed" then if rostermanager.process_inbound_subscription_cancellation(node, host, from_bare) then rostermanager.roster_push(node, host, from_bare); end end -- discard any other type stanza.attr.from, stanza.attr.to = st_from, st_to; end local outbound_presence_handler = function(data) -- outbound presence recieved local origin, stanza = data.origin, data.stanza; local to = stanza.attr.to; if to then local t = stanza.attr.type; if t ~= nil and t ~= "unavailable" and t ~= "error" then -- check for subscriptions and probes handle_outbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to), core_route_stanza); return true; end local to_bare = jid_bare(to); if not(origin.roster[to_bare] and (origin.roster[to_bare].subscription == "both" or origin.roster[to_bare].subscription == "from")) then -- directed presence origin.directed = origin.directed or {}; if t then -- removing from directed presence list on sending an error or unavailable origin.directed[to] = nil; -- FIXME does it make more sense to add to_bare rather than to? else origin.directed[to] = true; -- FIXME does it make more sense to add to_bare rather than to? end end end -- TODO maybe handle normal presence here, instead of letting it pass to incoming handlers? end module:hook("pre-presence/full", outbound_presence_handler); module:hook("pre-presence/bare", outbound_presence_handler); module:hook("pre-presence/host", outbound_presence_handler); module:hook("presence/bare", function(data) -- inbound presence to bare JID recieved local origin, stanza = data.origin, data.stanza; local to = stanza.attr.to; local t = stanza.attr.type; if to then if t ~= nil and t ~= "unavailable" and t ~= "error" then -- check for subscriptions and probes sent to bare JID handle_inbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to), core_route_stanza); return true; end local user = bare_sessions[to]; if user then for _, session in pairs(user.sessions) do if session.presence then -- only send to available resources session.send(stanza); end end end -- no resources not online, discard elseif not t or t == "unavailable" then handle_normal_presence(origin, stanza, core_route_stanza); end return true; end); module:hook("presence/full", function(data) -- inbound presence to full JID recieved local origin, stanza = data.origin, data.stanza; local t = stanza.attr.type; if t ~= nil and t ~= "unavailable" and t ~= "error" then -- check for subscriptions and probes sent to full JID handle_inbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to), core_route_stanza); return true; end local session = full_sessions[stanza.attr.to]; if session then -- TODO fire post processing event session.send(stanza); end -- resource not online, discard return true; end); module:hook("resource-unbind", function(event) local session, err = event.session, event.error; -- Send unavailable presence if session.presence then local pres = st.presence{ type = "unavailable" }; if not(err) or err == "closed" then err = "connection closed"; end pres:tag("status"):text("Disconnected: "..err):up(); session:dispatch_stanza(pres); elseif session.directed then local pres = st.presence{ type = "unavailable", from = session.full_jid }; if not(err) or err == "closed" then err = "connection closed"; end pres:tag("status"):text("Disconnected: "..err):up(); for jid in pairs(session.directed) do pres.attr.to = jid; core_route_stanza(session, pres); end session.directed = nil; end end);