Thu, 02 Dec 2010 22:55:42 +0500
net.server_select: Made some globals local.
-- Prosody IM -- Copyright (C) 2008-2010 Matthew Wild -- Copyright (C) 2008-2010 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 NULL = {}; local rostermanager = require "core.rostermanager"; local sessionmanager = require "core.sessionmanager"; local offlinemanager = require "core.offlinemanager"; 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(user) if user then user.top_resources = select_top_resources(user); if #user.top_resources == 0 then user.top_resources = nil; end end end local ignore_presence_priority = module:get_option("ignore_presence_priority"); function handle_normal_presence(origin, stanza) if ignore_presence_priority then local priority = stanza:child_with_name("priority"); if priority and priority[1] ~= "0" then for i=#priority.tags,1,-1 do priority.tags[i] = nil; end for i=#priority,1,-1 do priority[i] = nil; end priority[1] = "0"; end end 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 full_sessions[origin.full_jid] then -- if user is still connected origin.send(stanza); -- reflect their presence back to them end local roster = origin.roster; local node, host = origin.username, origin.host; local user = bare_sessions[node.."@"..host]; for _, res in pairs(user and user.sessions or NULL) do -- broadcast to all resources if res ~= origin and res.presence then -- to resource stanza.attr.to = res.full_jid; core_post_stanza(origin, stanza, true); 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_post_stanza(origin, stanza, true); end end if stanza.attr.type == nil and not origin.presence then -- initial presence origin.presence = stanza; -- FIXME repeated later 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_post_stanza(origin, probe, true); end end for _, res in pairs(user and user.sessions or NULL) do -- broadcast from all available resources if res ~= origin and res.presence then res.presence.attr.to = origin.full_jid; core_post_stanza(res, res.presence, true); 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_post_stanza(origin, request, true); end end if priority >= 0 then 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 end if stanza.attr.type == "unavailable" then origin.presence = nil; if origin.priority then origin.priority = nil; recalc_resource_map(user); end if origin.directed then for jid in pairs(origin.directed) do stanza.attr.to = jid; core_post_stanza(origin, stanza, true); end origin.directed = nil; end else origin.presence = stanza; if origin.priority ~= priority then origin.priority = priority; recalc_resource_map(user); end end stanza.attr.to = nil; -- reset it end function send_presence_of_available_resources(user, host, jid, recipient_session, 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 if stanza then pres = stanza; pres.attr.from = session.full_jid; end pres.attr.to = jid; core_post_stanza(session, pres, true); 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) local node, host = jid_split(from_bare); if to_bare == from_bare 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 == "probe" then stanza.attr.from, stanza.attr.to = st_from, st_to; return; elseif 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_post_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_post_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_post_stanza(origin, stanza); send_presence_of_available_resources(node, host, to_bare, origin); 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_post_stanza(origin, stanza); end stanza.attr.from, stanza.attr.to = st_from, st_to; return true; end function handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare) 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 local result, err = rostermanager.is_contact_subscribed(node, host, from_bare); if result then if 0 == send_presence_of_available_resources(node, host, st_from, origin) then core_post_stanza(hosts[host], st.presence({from=to_bare, to=st_from, type="unavailable"}), true); -- TODO send last activity end elseif not err then core_post_stanza(hosts[host], st.presence({from=to_bare, to=from_bare, type="unsubscribed"}), true); end elseif stanza.attr.type == "subscribe" then if rostermanager.is_contact_subscribed(node, host, from_bare) then core_post_stanza(hosts[host], st.presence({from=to_bare, to=from_bare, type="subscribed"}), true); -- 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) then core_post_stanza(hosts[host], st.presence({from=to_bare, to=from_bare, type="unavailable"}), true); -- TODO send last activity end else core_post_stanza(hosts[host], st.presence({from=to_bare, to=from_bare, type="unavailable"}), true); -- acknowledging receipt 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 sessionmanager.send_to_interested_resources(node, host, stanza); 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 sessionmanager.send_to_interested_resources(node, host, stanza); 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 sessionmanager.send_to_interested_resources(node, host, stanza); rostermanager.roster_push(node, host, from_bare); end end -- discard any other type stanza.attr.from, stanza.attr.to = st_from, st_to; return true; 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 return handle_outbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to)); end local to_bare = jid_bare(to); local roster = origin.roster; if roster and not(roster[to_bare] and (roster[to_bare].subscription == "both" or 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 return handle_inbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to)); 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); 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 return handle_inbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to)); 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("presence/host", function(data) -- inbound presence to the host local origin, stanza = data.origin, data.stanza; local from_bare = jid_bare(stanza.attr.from); local t = stanza.attr.type; if t == "probe" then core_post_stanza(hosts[module.host], st.presence({ from = module.host, to = from_bare, id = stanza.attr.id })); elseif t == "subscribe" then core_post_stanza(hosts[module.host], st.presence({ from = module.host, to = from_bare, id = stanza.attr.id, type = "subscribed" })); core_post_stanza(hosts[module.host], st.presence({ from = module.host, to = from_bare, id = stanza.attr.id })); end 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_post_stanza(session, pres, true); end session.directed = nil; end end);