local st = require "util.stanza";
local send = require "core.sessionmanager".send_to_session;
+local user_exists = require "core.usermanager".user_exists;
-require "util.jid"
-local jid_split = jid.split;
+local jid_split = require "util.jid".split;
+local print = print;
function core_process_stanza(origin, stanza)
log("debug", "Received: "..tostring(stanza))
-- 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
+ error("Invalid IQ");
+ end
+ end
if origin.type == "c2s" and not origin.full_jid
- and not(stanza.name == "iq" and stanza.tags[1] and stanza.tags[1].name == "bind"
+ and not(stanza.name == "iq" and stanza.tags[1].name == "bind"
and stanza.tags[1].attr.xmlns == "urn:ietf:params:xml:ns:xmpp-bind") then
error("Client MUST bind resource after auth");
end
-
local to = stanza.attr.to;
- stanza.attr.from = origin.full_jid -- quick fix to prevent impersonation
+ 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
- if not to or (hosts[to] and hosts[to].type == "local") then
+ -- TODO presence subscriptions
+ 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
core_handle_stanza(origin, stanza);
elseif origin.type == "c2s" then
core_route_stanza(origin, stanza);
-- Handlers
if origin.type == "c2s" or origin.type == "c2s_unauthed" then
local session = origin;
- stanza.attr.from = session.full_jid;
-
- log("debug", "Routing stanza");
- -- Stanza has no to attribute
- --local to_node, to_host, to_resource = jid_split(stanza.attr.to);
- --if not to_host then error("Invalid destination JID: "..string.format("{ %q, %q, %q } == %q", to_node or "", to_host or "", to_resource or "", stanza.attr.to or "nil")); end
- -- Stanza is to this server, or a user on this server
- log("debug", "Routing stanza to local");
- handle_stanza(session, stanza);
+ if stanza.name == "presence" and origin.roster then
+ if stanza.attr.type == nil or stanza.attr.type == "available" 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.full_jid then
+ res = user.sessions[k];
+ break;
+ end
+ end]]
+ if not origin.presence then -- presence probes on initial presence
+ local probe = st.presence({from = origin.full_jid, type = "probe"});
+ for jid in pairs(origin.roster) do
+ local subscription = origin.roster[jid].subscription;
+ if subscription == "both" or subscription == "to" then
+ probe.attr.to = jid;
+ core_route_stanza(origin, probe);
+ end
+ end
+ end
+ origin.presence = stanza;
+ stanza.attr.to = nil; -- reset it
+ else
+ -- TODO error, bad type
+ end
+ else
+ log("debug", "Routing stanza to local");
+ handle_stanza(session, stanza);
+ end
end
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");
+end
+
function core_route_stanza(origin, stanza)
-- Hooks
--- ...later
-- Deliver
- local node, host, resource = jid_split(stanza.attr.to);
+ local to = stanza.attr.to;
+ local node, host, resource = jid_split(to);
+
+ if stanza.name == "presence" and stanza.attr.type == "probe" then resource = nil; end
+
local host_session = hosts[host]
if host_session and host_session.type == "local" then
-- Local host
local user = host_session.sessions[node];
if user then
local res = user.sessions[resource];
- -- TODO do something about presence broadcast
if not res then
-- if we get here, resource was not specified or was unavailable
- for k in pairs(user.sessions) do
- res = user.sessions[k];
- break;
+ if stanza.name == "presence" 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
+ else
+ 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);
+ 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;
+ end
+ end
+ -- TODO find resource with greatest priority
+ send(res, stanza);
+ else
+ -- TODO send IQ error
end
- -- TODO find resource with greatest priority
+ else
+ stanza.attr.to = res.full_jid;
+ send(res, stanza); -- Yay \o/
end
- stanza.attr.to = res.full_jid;
- send(res, stanza); -- Yay \o/
else
- -- user not found
- send(origin, st.error_reply(stanza, "cancel", "service-unavailable"));
+ -- 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
+ else
+ -- TODO send unavailable presence
+ end
+ elseif stanza.name == "message" then
+ -- TODO send message error, or store offline messages
+ elseif stanza.name == "iq" then
+ -- TODO send IQ error
+ 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
+ send(origin, st.presence({from = user.."@"..host, to = origin.username.."@"..origin.host, type = "unsubscribed"}));
+ end
+ -- else ignore
+ else
+ send(origin, st.error_reply(stanza, "cancel", "service-unavailable"));
+ end
+ end
end
else
-- Remote host
-- Need to establish the connection
end
end
+ stanza.attr.to = to; -- reset
end
function handle_stanza_nodest(stanza)
projects / prosody.git / blobdiff