+-- Prosody IM v0.3
+-- Copyright (C) 2008 Matthew Wild
+-- Copyright (C) 2008 Waqas Hussain
+--
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
--- 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 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 handle_normal_presence = require "core.presencemanager".handle_normal_presence;
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 jid_prepped_split = require "util.jid".prepped_split;
local print = print;
+local function checked_error_reply(origin, 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
function core_process_stanza(origin, stanza)
- log("debug", "Received["..origin.type.."]: "..tostring(stanza))
+ (origin.log or log)("debug", "Received[%s]: %s", origin.type, stanza: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
- local to = stanza.attr.to;
- -- 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; -- quick fix to prevent impersonation (FIXME this would be incorrect when the origin is not c2s)
+ stanza.attr.from = origin.full_jid;
end
-
- if not to then
- core_handle_stanza(origin, stanza);
- elseif origin.type == "c2s" and stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then
- local node, host = jid_split(stanza.attr.to);
- local to_bare = node and (node.."@"..host) or host; -- bare JID
- local from_node, from_host = jid_split(stanza.attr.from);
- local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID
- handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare);
- 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
+ local to, xmlns = stanza.attr.to, stanza.attr.xmlns;
+ local from = stanza.attr.from;
+ local node, host, resource;
+ local from_node, from_host, from_resource;
+ local to_bare, from_bare;
+ if to then
+ node, host, resource = jid_prepped_split(to);
+ if not host then
+ error("Invalid to JID");
+ end
+ to_bare = node and (node.."@"..host) or host; -- bare JID
+ if resource then to = to_bare.."/"..resource; else to = to_bare; end
+ stanza.attr.to = to;
+ end
+ if from then
+ from_node, from_host, from_resource = jid_prepped_split(from);
+ if not from_host then
+ error("Invalid from JID");
+ end
+ from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID
+ if from_resource then from = from_bare.."/"..from_resource; else from = from_bare; end
+ stanza.attr.from = from;
+ 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") and (not xmlns or xmlns == "jabber:server" or xmlns == "jabber:client") then
+ if origin.type == "s2sin" and not origin.dummy then
+ local host_status = origin.hosts[from_host];
+ if not host_status or not host_status.authed 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_host, origin.from_host);
+ return; -- FIXME what should we do here? does this work with subdomains?
+ end
+ end
+ 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] 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[to_bare] and hosts[to_bare].type == "component" then -- hack to allow components to handle node@server
+ 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
+ if origin.type == "c2s" and stanza.name == "presence" and to ~= nil and not(origin.roster[to_bare] and (origin.roster[to_bare].subscription == "both" or origin.roster[to_bare].subscription == "from")) then
+ origin.directed = origin.directed or {};
+ t_insert(origin.directed, to); -- FIXME does it make more sense to add to_bare rather than to?
+ end
+ core_route_stanza(origin, stanza);
+ end
+ else
core_handle_stanza(origin, stanza);
- elseif stanza.attr.xmlns ~= "jabber:client" and stanza.attr.xmlns ~= "jabber:server" then
- modules_handle_stanza(origin, stanza);
- elseif origin.type == "c2s" or origin.type == "s2sin" 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 == "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
- 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 not origin.presence then -- presence probes on initial presence -- FIXME does unavailable qualify as 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 resources
- if res ~= origin and stanza.attr.type ~= "unavailable" and res.presence then -- FIXME does unavailable qualify as initial presence?
- res.presence.attr.to = origin.full_jid;
- core_route_stanza(res, res.presence);
- res.presence.attr.to = nil;
- end
- end
- -- TODO resend subscription requests
+ if modules_handle_stanza(select(2, jid_split(stanza.attr.to)) or origin.host, origin, stanza) then return; end
+ if origin.type == "c2s" or origin.type == "s2sin" then
+ if origin.type == "c2s" then
+ if stanza.name == "presence" and origin.roster then
+ if stanza.attr.type == nil or stanza.attr.type == "unavailable" then
+ handle_normal_presence(origin, stanza, core_route_stanza);
+ else
+ log("warn", "Unhandled c2s presence: %s", tostring(stanza));
+ checked_error_reply(origin, stanza);
end
- origin.presence = stanza;
- stanza.attr.to = nil; -- reset it
else
- -- TODO error, bad type
+ log("warn", "Unhandled c2s stanza: %s", tostring(stanza));
+ checked_error_reply(origin, stanza);
end
+ else -- s2s stanzas
+ log("warn", "Unhandled s2s stanza: %s", tostring(stanza));
+ checked_error_reply(origin, stanza);
end
else
- log("warn", "Unhandled origin: %s", origin.type);
+ log("warn", "Unhandled %s stanza: %s", origin.type, tostring(stanza));
+ checked_error_reply(origin, stanza);
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 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
- 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 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 k in pairs(user.sessions) do -- presence broadcast to all user resources. FIXME should this be just for available resources? Do we need to check subscription?
- if user.sessions[k].full_jid then
- stanza.attr.to = user.sessions[k].full_jid; -- reset at the end of function
- user.sessions[k].send(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
- res.send(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
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
+ elseif stanza.name == "message" then -- FIXME if full jid, then send out to resources with highest priority
+ 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
+ origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
end
else -- user does not exist
-- 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
+ local t = stanza.attr.type;
+ if t == "subscribe" or t == "probe" then
origin.send(st.presence({from = to_bare, to = from_bare, type = "unsubscribed"}));
end
-- else ignore
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);
+ 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