Thu, 26 Mar 2009 03:55:45 +0000
util.array: Expose array.* functions, to be used for unwrapped arrays
-- Prosody IM v0.4 -- 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 = require "util.logger".init("presencemanager") local require = require; local pairs, ipairs = pairs, ipairs; local t_concat = table.concat; local s_find = string.find; local tonumber = tonumber; local st = require "util.stanza"; local jid_split = require "util.jid".split; local hosts = hosts; local rostermanager = require "core.rostermanager"; local sessionmanager = require "core.sessionmanager"; local offlinemanager = require "core.offlinemanager"; module "presencemanager" function handle_presence(origin, stanza, from_bare, to_bare, core_route_stanza, inbound) local type = stanza.attr.type; if type and type ~= "unavailable" then if inbound then handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); else handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); end elseif not inbound and not stanza.attr.to then handle_normal_presence(origin, stanza, core_route_stanza); else core_route_stanza(origin, stanza); end end function handle_normal_presence(origin, stanza, core_route_stanza) if origin.roster then for jid in pairs(origin.roster) do -- broadcast to all interested contacts local subscription = origin.roster[jid].subscription; if subscription == "both" or subscription == "from" then stanza.attr.to = jid; core_route_stanza(origin, stanza); end end local node, host = jid_split(stanza.attr.from); for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast to all resources if res ~= origin and res.full_jid then -- to resource. FIXME is res.full_jid the correct check? Maybe it should be res.presence stanza.attr.to = res.full_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 in pairs(origin.roster) do -- probe all contacts we are subscribed to local subscription = origin.roster[jid].subscription; if subscription == "both" or 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 origin.roster.pending then -- resend incoming subscription requests for jid in pairs(origin.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(origin.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 origin.priority = 0; if stanza.attr.type == "unavailable" then origin.presence = nil; if origin.directed then local old_from = stanza.attr.from; stanza.attr.from = origin.full_jid; for jid in pairs(origin.directed) do stanza.attr.to = jid; core_route_stanza(origin, stanza); end stanza.attr.from = old_from; 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 origin.priority = priority; end end end stanza.attr.to = nil; -- reset it else log("error", "presence recieved from client with no roster"); end 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; pres.attr.from = session.full_jid; core_route_stanza(session, pres); pres.attr.to = nil; pres.attr.from = nil; count = count + 1; end end end end log("info", "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); 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 stanza.attr.type == "probe" then if rostermanager.is_contact_subscribed(node, host, from_bare) then 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 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 return _M;