local log = require "util.logger".init("stanzarouter")
local st = require "util.stanza";
-local send = require "core.sessionmanager".send_to_session;
+local send_s2s = require "core.s2smanager".send_to_host;
local user_exists = require "core.usermanager".user_exists;
+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 format = string.format;
+local tostring = tostring;
+local t_concat = table.concat;
+local t_insert = table.insert;
+local tonumber = tonumber;
+local s_find = string.find;
+
local jid_split = require "util.jid".split;
-local print, debug = print, debug;
+local print = print;
function core_process_stanza(origin, stanza)
- log("debug", "Received: "..tostring(stanza))
+ log("debug", "Received["..origin.type.."]: "..tostring(st.reply(st.reply(stanza))))
+
+ 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("Invalid IQ");
- elseif #stanza.tags > 1 or not(stanza.attr.type == "error" or stanza.attr.type == "result") then
+ elseif #stanza.tags > 1 and not(stanza.attr.type == "error" or stanza.attr.type == "result") then
error("Invalid IQ");
end
end
error("Client MUST bind resource after auth");
end
- local to = stanza.attr.to;
- stanza.attr.from = origin.full_jid; -- quick fix to prevent impersonation (FIXME this would be incorrect when the origin is not c2s)
-- TODO also, stazas should be returned to their original state before the function ends
-
- -- TODO presence subscriptions
- if not to then
+ if origin.type == "c2s" then
+ stanza.attr.from = origin.full_jid;
+ end
+ local to = stanza.attr.to;
+ local node, host, resource = jid_split(to);
+ local to_bare = node and (node.."@"..host) or host; -- bare JID
+ local from = stanza.attr.from;
+ 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
+
+ if origin.type == "s2sin" then
+ if origin.from_host ~= from_host then -- remote server trying to impersonate some other server?
+ log("warn", "Received a stanza claiming to be from %s, over a conn authed for %s!", from, origin.from_host);
+ return; -- FIXME what should we do here? does this work with subdomains?
+ end
+ end
+ --[[if to and not(hosts[to]) and not(hosts[to_bare]) and (hosts[host] and hosts[host].type ~= "local") then -- not for us?
+ log("warn", "stanza recieved for a non-local server");
+ return; -- FIXME what should we do here?
+ end]] -- FIXME
+
+ -- FIXME do stanzas not of jabber:client get handled by components?
+ 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
- core_handle_stanza(origin, stanza);
- elseif stanza.name == "iq" and not select(3, jid_split(to)) then
+ 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] 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);
+ elseif stanza.name == "iq" and not resource then -- directed at bare JID
+ core_handle_stanza(origin, stanza);
+ else
+ core_route_stanza(origin, stanza);
+ end
+ else
core_handle_stanza(origin, stanza);
- elseif origin.type == "c2s" then
- core_route_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 origin.type == "c2s" or origin.type == "c2s_unauthed" then
local session = origin;
-
+
if stanza.name == "presence" and origin.roster then
- if stanza.attr.type == nil or stanza.attr.type == "available" or stanza.attr.type == "unavailable" then
+ if stanza.attr.type == nil or stanza.attr.type == "unavailable" 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
end
end
local node, host = jid_split(stanza.attr.from);
- for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast to all resources and from resources
- if res ~= origin then
- if res.full_jid then -- to resource. FIXME is this check correct? Maybe it should be res.presence
- stanza.attr.to = res.full_jid;
- core_route_stanza(origin, stanza);
- end
- if res.presence then -- from all resources for which we have presence
- res.presence.attr.to = origin.full_jid;
- core_route_stanza(res, res.presence);
- res.presence.attr.to = nil;
- end
+ 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 not origin.presence then -- presence probes on initial presence
+ 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
+ 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
+ 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
+ origin.presence = nil;
+ 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
- origin.presence = stanza;
stanza.attr.to = nil; -- reset it
else
- -- TODO error, bad type
+ log("warn", "Unhandled c2s presence: %s", tostring(stanza));
+ origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error?
end
else
- log("debug", "Routing stanza to local");
- handle_stanza(session, stanza);
+ log("warn", "Unhandled c2s stanza: %s", tostring(stanza));
+ origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error?
+ end -- TODO handle other stanzas
+ else
+ log("warn", "Unhandled origin: %s", origin.type);
+ -- s2s stanzas can get here
+ (origin.sends2s or origin.send)(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct 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;
+ end
+ end
end
end
+ return count;
end
-function is_authorized_to_see_presence(origin, username, host)
- local roster = datamanager.load(username, host, "roster") or {};
- local item = roster[origin.username.."@"..origin.host];
- return item and (item.subscription == "both" or item.subscription == "from");
+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
+ end
+ 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
function core_route_stanza(origin, stanza)
-- Hooks
--- ...later
-
+
-- Deliver
local to = stanza.attr.to;
local node, host, resource = jid_split(to);
+ local to_bare = node and (node.."@"..host) or host; -- bare JID
+ local from = stanza.attr.from;
+ 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
if stanza.name == "presence" and (stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable") then resource = nil; end
-- 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
- if stanza.attr.type == "probe" then
- if is_authorized_to_see_presence(origin, node, host) then
- for k in pairs(user.sessions) do -- return presence for all resources
- if user.sessions[k].presence then
- local pres = user.sessions[k].presence;
- pres.attr.to = origin.full_jid;
- pres.attr.from = user.sessions[k].full_jid;
- send(origin, pres);
- pres.attr.to = nil;
- pres.attr.from = nil;
- end
- end
- else
- send(origin, st.presence({from=user.."@"..host, to=origin.username.."@"..origin.host, type="unsubscribed"}));
- end
- elseif stanza.attr.type == "subscribe" then
- -- TODO
- elseif stanza.attr.type == "unsubscribe" then
- -- TODO
- elseif stanza.attr.type == "subscribed" then
- -- TODO
- elseif stanza.attr.type == "unsubscribed" then
- -- TODO
- end -- discard any other type
+ handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare);
else -- sender is available or unavailable
- for k in pairs(user.sessions) do -- presence broadcast to all user resources
- if user.sessions[k].full_jid then
- stanza.attr.to = user.sessions[k].full_jid;
- send(user.sessions[k], stanza);
+ 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?
+ stanza.attr.to = session.full_jid; -- reset at the end of function
+ session.send(stanza);
end
end
end
elseif stanza.name == "message" then -- select a resource to recieve message
- for k in pairs(user.sessions) do
- if user.sessions[k].full_jid then
- res = user.sessions[k];
- break;
+ local priority = 0;
+ local recipients = {};
+ for _, session in pairs(user.sessions) do -- find resource with greatest priority
+ local p = session.priority;
+ if p > priority then
+ priority = p;
+ recipients = {session};
+ elseif p == priority then
+ t_insert(recipients, session);
end
end
- -- TODO find resource with greatest priority
- send(res, stanza);
+ 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
end
else
-- User + resource is online...
- stanza.attr.to = res.full_jid;
- send(res, stanza); -- Yay \o/
+ stanza.attr.to = res.full_jid; -- reset at the end of function
+ res.send(stanza); -- Yay \o/
end
else
-- user not online
if user_exists(node, host) then
if stanza.name == "presence" then
- if stanza.attr.type == "probe" and is_authorized_to_see_presence(origin, node, host) then -- FIXME what to do for not c2s?
- -- TODO send last recieved unavailable presence
+ if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then
+ handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare);
else
- -- TODO send unavailable presence
+ -- 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
-- TODO we would get here for nodeless JIDs too. Do something fun maybe? Echo service? Let plugins use xmpp:server/resource addresses?
if stanza.name == "presence" then
if stanza.attr.type == "probe" then
- send(origin, st.presence({from = user.."@"..host, to = origin.username.."@"..origin.host, type = "unsubscribed"}));
+ origin.send(st.presence({from = to_bare, to = from_bare, type = "unsubscribed"}));
end
-- else ignore
else
- send(origin, st.error_reply(stanza, "cancel", "service-unavailable"));
+ origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
end
end
end
- else
+ elseif origin.type == "c2s" then
-- Remote host
- if host_session then
- -- Send to session
- else
- -- Need to establish the connection
- end
+ local xmlns = stanza.attr.xmlns;
+ --stanza.attr.xmlns = "jabber:server";
+ stanza.attr.xmlns = nil;
+ log("debug", "sending s2s stanza: %s", tostring(stanza));
+ send_s2s(origin.host, host, stanza); -- TODO handle remote routing errors
+ stanza.attr.xmlns = xmlns; -- reset
+ 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);
end
stanza.attr.to = to; -- reset
end
function handle_stanza_toremote(stanza)
log("error", "Stanza bound for remote host, but s2s is not implemented");
end
+
+
projects / prosody.git / blobdiff