Was a bit hasty to remove send_s2s() from stanza_router. We still use it, and there...
[prosody.git] / core / stanza_router.lua
index 16658f30dbea664228cb2e89ac1a658cbb99c95b..e98d679496bb37c3ac7f047bb05fe2a9cfd834b9 100644 (file)
@@ -8,11 +8,11 @@ require "core.servermanager"
 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 s2s_verify_dialback = require "core.s2smanager".verify_dialback;
 local s2s_make_authenticated = require "core.s2smanager".make_authenticated;
@@ -47,6 +47,12 @@ function core_process_stanza(origin, stanza)
        
        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
@@ -79,7 +85,7 @@ function core_handle_stanza(origin, stanza)
                                                core_route_stanza(origin, stanza);
                                        end
                                end
-                               if not origin.presence then -- presence probes on initial presence
+                               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;
@@ -116,11 +122,14 @@ function core_handle_stanza(origin, stanza)
                                print(tostring(origin.to_host), tostring(origin.from_host))
                                -- FIXME: Grr, ejabberd breaks this one too?? it is black and white in XEP-220 example 34
                                --if attr.from ~= origin.to_host then error("invalid-from"); end
-                               local type = "invalid";
+                               local type;
                                if s2s_verify_dialback(attr.id, attr.from, attr.to, stanza[1]) then
                                        type = "valid"
+                               else
+                                       type = "invalid"
+                                       log("warn", "Asked to verify a dialback key that was incorrect. An imposter is claiming to be %s?", attr.to);
                                end
-                               origin.send(format("<db:verify from='%s' to='%s' id='%s' type='%s'>%s</db:verify>", attr.to, attr.from, attr.id, type, stanza[1]));
+                               origin.sends2s(format("<db:verify from='%s' to='%s' id='%s' type='%s'>%s</db:verify>", attr.to, attr.from, attr.id, type, stanza[1]));
                        elseif stanza.name == "result" and origin.type == "s2sin_unauthed" then
                                -- he wants to be identified through dialback
                                -- We need to check the key with the Authoritative server
@@ -153,7 +162,7 @@ function core_handle_stanza(origin, stanza)
                                        log("warn", "dialback for "..(origin.dialback_verifying.from_host or "(unknown)").." failed");
                                        valid = "invalid";
                                end
-                               origin.dialback_verifying.send(format("<db:result from='%s' to='%s' id='%s' type='%s'>%s</db:result>", attr.from, attr.to, attr.id, valid, origin.dialback_verifying.dialback_key));
+                               origin.dialback_verifying.sends2s(format("<db:result from='%s' to='%s' id='%s' type='%s'>%s</db:result>", attr.from, attr.to, attr.id, valid, origin.dialback_verifying.dialback_key));
                        end
                end
        else
@@ -161,10 +170,110 @@ function core_handle_stanza(origin, stanza)
        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");
+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)
@@ -191,51 +300,12 @@ function core_route_stanza(origin, stanza)
                                -- 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
-                                                                       local pres = user.sessions[k].presence;
-                                                                       if pres then
-                                                                               pres.attr.to = from; -- FIXME use from_bare or from?
-                                                                               pres.attr.from = user.sessions[k].full_jid;
-                                                                               send(origin, pres);
-                                                                       end
-                                                               end
-                                                               pres.attr.to = nil;
-                                                               pres.attr.from = nil;
-                                                       else
-                                                               send(origin, st.presence({from=to_bare, to=from_bare, type="unsubscribed"}));
-                                                       end
-                                               elseif stanza.attr.type == "subscribe" then
-                                                       -- TODO
-                                               elseif stanza.attr.type == "unsubscribe" then
-                                                       if rostermanager.process_inbound_unsubscribe(node, host, from_bare) then
-                                                               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
-                                                               rostermanager.roster_push(node, host, from_bare);
-                                                               for k in pairs(user.sessions) do -- return presence for all resources
-                                                                       local pres = user.sessions[k].presence;
-                                                                       if pres then
-                                                                               pres.attr.to = from; -- FIXME use from_bare or from?
-                                                                               pres.attr.from = user.sessions[k].full_jid;
-                                                                               send(origin, pres);
-                                                                       end
-                                                               end
-                                                               pres.attr.to = nil;
-                                                               pres.attr.from = nil;
-                                                       end
-                                               elseif stanza.attr.type == "unsubscribed" then
-                                                       if rostermanager.process_inbound_subscription_approval(node, host, from_bare) then
-                                                               rostermanager.roster_push(node, host, from_bare);
-                                                       end
-                                               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
+                                               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
-                                                               send(user.sessions[k], stanza);
+                                                               user.sessions[k].send(stanza);
                                                        end
                                                end
                                        end
@@ -247,23 +317,23 @@ function core_route_stanza(origin, stanza)
                                                end
                                        end
                                        -- TODO find resource with greatest priority
-                                       send(res, stanza);
+                                       res.send(stanza);
                                else
                                        -- TODO send IQ error
                                end
                        else
                                -- User + resource is online...
                                stanza.attr.to = res.full_jid; -- reset at the end of function
-                               send(res, stanza); -- Yay \o/
+                               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 (or we MAY do nothing, which is fine too)
+                                       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
@@ -274,11 +344,11 @@ function core_route_stanza(origin, stanza)
                                -- 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 = to_bare, to = from_bare, 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