--- The code in this file should be self-explanatory, though the logic is horrible
--- for more info on that, see doc/stanza_routing.txt, which attempts to condense
--- the rules from the RFCs (mainly 3921)
-
-require "core.servermanager"
-
local log = require "util.logger".init("stanzarouter")
local st = require "util.stanza";
local rostermanager = require "core.rostermanager";
local sessionmanager = require "core.sessionmanager";
+local offlinemanager = require "core.offlinemanager";
local s2s_verify_dialback = require "core.s2smanager".verify_dialback;
local s2s_make_authenticated = require "core.s2smanager".make_authenticated;
local modules_handle_stanza = require "core.modulemanager".handle_stanza;
local component_handle_stanza = require "core.componentmanager".handle_stanza;
+local handle_outbound_presence_subscriptions_and_probes = require "core.presencemanager".handle_outbound_presence_subscriptions_and_probes;
+local handle_inbound_presence_subscriptions_and_probes = require "core.presencemanager".handle_inbound_presence_subscriptions_and_probes;
+
local format = string.format;
local tostring = tostring;
local t_concat = table.concat;
local print = print;
function core_process_stanza(origin, stanza)
- log("debug", "Received["..origin.type.."]: "..tostring(stanza))
+ (origin.log or log)("debug", "Received[%s]: %s", origin.type, stanza:pretty_print()) --top_tag())
+ if not stanza.attr.xmlns then stanza.attr.xmlns = "jabber:client"; end -- FIXME Hack. This should be removed when we fix namespace handling.
-- TODO verify validity of stanza (as well as JID validity)
if stanza.name == "iq" and not(#stanza.tags == 1 and stanza.tags[1].attr.xmlns) then
if stanza.attr.type == "set" or stanza.attr.type == "get" then
error("Client MUST bind resource after auth");
end
- -- TODO also, stazas should be returned to their original state before the function ends
+ -- TODO also, stanzas should be returned to their original state before the function ends
if origin.type == "c2s" then
stanza.attr.from = origin.full_jid;
end
end]] -- FIXME
-- FIXME do stanzas not of jabber:client get handled by components?
- if not to then
- core_handle_stanza(origin, stanza);
- elseif hosts[to] and hosts[to].type == "local" then -- directed at a local server
- core_handle_stanza(origin, stanza);
- elseif stanza.attr.xmlns and stanza.attr.xmlns ~= "jabber:client" and stanza.attr.xmlns ~= "jabber:server" then
- modules_handle_stanza(origin, stanza);
- elseif hosts[to_bare] and hosts[to_bare].type == "component" then -- hack to allow components to handle node@server
- component_handle_stanza(origin, stanza);
- elseif hosts[to] and hosts[to].type == "component" then -- hack to allow components to handle node@server/resource and server/resource
- component_handle_stanza(origin, stanza);
- elseif hosts[host].type == "component" then -- directed at a component
- component_handle_stanza(origin, stanza);
- elseif origin.type == "c2s" and stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then
- handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare);
- elseif stanza.name == "iq" and not resource then -- directed at bare JID
- core_handle_stanza(origin, stanza);
- elseif origin.type == "c2s" or origin.type == "s2sin" then
- core_route_stanza(origin, stanza);
+ if origin.type == "s2sin" or origin.type == "c2s" then
+ if not to then
+ core_handle_stanza(origin, stanza);
+ elseif hosts[to] and hosts[to].type == "local" then -- directed at a local server
+ core_handle_stanza(origin, stanza);
+ elseif stanza.attr.xmlns and stanza.attr.xmlns ~= "jabber:client" and stanza.attr.xmlns ~= "jabber:server" then
+ modules_handle_stanza(host or origin.host or origin.to_host, origin, stanza);
+ elseif hosts[to_bare] and hosts[to_bare].type == "component" then -- hack to allow components to handle node@server
+ component_handle_stanza(origin, stanza);
+ elseif hosts[to] and hosts[to].type == "component" then -- hack to allow components to handle node@server/resource and server/resource
+ component_handle_stanza(origin, stanza);
+ elseif hosts[host] and hosts[host].type == "component" then -- directed at a component
+ component_handle_stanza(origin, stanza);
+ elseif origin.type == "c2s" and stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then
+ handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza);
+ elseif origin.type ~= "c2s" and stanza.name == "iq" and not resource then -- directed at bare JID
+ core_handle_stanza(origin, stanza);
+ else
+ core_route_stanza(origin, stanza);
+ end
else
- log("warn", "stanza not processed");
+ core_handle_stanza(origin, stanza);
end
end
-- that is, they are handled by this server
function core_handle_stanza(origin, stanza)
-- Handlers
- if modules_handle_stanza(origin, stanza) then return; end
+ if modules_handle_stanza(stanza.attr.to or origin.host, origin, stanza) then return; end
if origin.type == "c2s" or origin.type == "c2s_unauthed" then
local session = origin;
core_route_stanza(origin, request);
end
end
+ for _, msg in ipairs(offlinemanager.load(node, host) or {}) do
+ origin.send(msg); -- FIXME do we need to modify to/from in any way?
+ end
+ offlinemanager.deleteAll(node, host);
end
origin.priority = 0;
if stanza.attr.type == "unavailable" then
end
stanza.attr.to = nil; -- reset it
else
- -- TODO error, bad type
- end
- end -- TODO handle other stanzas
- else
- log("warn", "Unhandled origin: %s", origin.type); -- FIXME reply with error
- end
-end
-
-function send_presence_of_available_resources(user, host, jid, recipient_session)
- 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;
- recipient_session.send(pres);
- pres.attr.to = nil;
- pres.attr.from = nil;
- count = count + 1;
+ log("warn", "Unhandled c2s presence: %s", tostring(stanza));
+ if (stanza.attr.xmlns == "jabber:client" or stanza.attr.xmlns == "jabber:server") and stanza.attr.type ~= "error" then
+ origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error?
end
end
- end
- end
- return count;
-end
-
-function handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare)
- 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;
- if stanza.attr.type == "subscribe" then
- log("debug", "outbound subscribe from "..from_bare.." for "..to_bare);
- -- 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
- log("debug", "outbound unsubscribe from "..from_bare.." for "..to_bare);
- -- 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
- log("debug", "outbound subscribed from "..from_bare.." for "..to_bare);
- -- 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);
- core_route_stanza(origin, stanza);
- send_presence_of_available_resources(node, host, to_bare, origin);
- end
- elseif stanza.attr.type == "unsubscribed" then
- log("debug", "outbound unsubscribed from "..from_bare.." for "..to_bare);
- -- 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);
- core_route_stanza(origin, stanza);
- end
- 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)
- 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;
- if stanza.attr.type == "probe" then
- log("debug", "inbound probe from "..from_bare.." for "..to_bare);
- if rostermanager.is_contact_subscribed(node, host, from_bare) then
- if 0 == send_presence_of_available_resources(node, host, from_bare, origin) 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
- log("debug", "inbound subscribe from "..from_bare.." for "..to_bare);
- 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
- 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
+ log("warn", "Unhandled c2s stanza: %s", tostring(stanza));
+ if (stanza.attr.xmlns == "jabber:client" or stanza.attr.xmlns == "jabber:server") and stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then
+ origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error?
end
+ end -- TODO handle other stanzas
+ else
+ log("warn", "Unhandled origin: %s", origin.type);
+ if (stanza.attr.xmlns == "jabber:client" or stanza.attr.xmlns == "jabber:server") and stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then
+ -- s2s stanzas can get here
+ origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error?
end
- elseif stanza.attr.type == "unsubscribe" then
- log("debug", "inbound unsubscribe from "..from_bare.." for "..to_bare);
- if rostermanager.process_inbound_unsubscribe(node, host, from_bare) then
- rostermanager.roster_push(node, host, from_bare);
- end
- elseif stanza.attr.type == "subscribed" then
- log("debug", "inbound subscribed from "..from_bare.." for "..to_bare);
- 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
- log("debug", "inbound unsubscribed from "..from_bare.." for "..to_bare);
- if rostermanager.process_inbound_subscription_approval(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
end
function core_route_stanza(origin, stanza)
local from_node, from_host, from_resource = jid_split(from);
local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID
+ -- Auto-detect origin if not specified
+ origin = origin or hosts[from_host];
+ if not origin then return false; end
+
if stanza.name == "presence" and (stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable") then resource = nil; end
local host_session = hosts[host]
-- if we get here, resource was not specified or was unavailable
if stanza.name == "presence" then
if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then
- handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare);
+ handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza);
else -- sender is available or unavailable
for _, session in pairs(user.sessions) do -- presence broadcast to all user resources.
if session.full_jid then -- FIXME should this be just for available resources? Do we need to check subscription?
t_insert(recipients, session);
end
end
- for _, session in pairs(recipient) do
+ local count = 0;
+ for _, session in pairs(recipients) do
session.send(stanza);
+ count = count + 1;
+ end
+ if count == 0 then
+ offlinemanager.store(node, host, stanza);
+ -- TODO deal with storage errors
end
else
-- TODO send IQ error
if user_exists(node, host) then
if stanza.name == "presence" then
if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then
- handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare);
+ handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza);
else
-- TODO send unavailable presence or unsubscribed
end
elseif stanza.name == "message" then
- -- TODO send message error, or store offline messages
+ if stanza.attr.type == "chat" or stanza.attr.type == "normal" or not stanza.attr.type then
+ offlinemanager.store(node, host, stanza);
+ -- FIXME don't store messages with only chat state notifications
+ end
+ -- TODO allow configuration of offline storage
+ -- TODO send error if not storing offline
elseif stanza.name == "iq" then
-- TODO send IQ error
end
elseif origin.type == "component" or origin.type == "local" then
-- Route via s2s for components and modules
log("debug", "Routing outgoing stanza for %s to %s", origin.host, host);
- for k,v in pairs(origin) do print("origin:", tostring(k), tostring(v)); end
- print(tostring(host), tostring(from_host))
send_s2s(origin.host, host, stanza);
else
log("warn", "received stanza from unhandled connection type: %s", origin.type);
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