A little whitespace fix
[prosody.git] / core / stanza_router.lua
index fc8cfa92aff4e17170045221848802ff8bfbdf10..4f6918d2baed1feeac427274ef9c7716210ad2ab 100644 (file)
@@ -21,6 +21,10 @@ local modules_handle_stanza = require "core.modulemanager".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 = print;
@@ -47,7 +51,7 @@ function core_process_stanza(origin, stanza)
        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)
        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
@@ -60,7 +64,7 @@ function core_process_stanza(origin, stanza)
                core_handle_stanza(origin, stanza);
        elseif stanza.name == "iq" and not select(3, jid_split(to)) then
                core_handle_stanza(origin, stanza);
-       elseif stanza.attr.xmlns ~= "jabber:client" and stanza.attr.xmlns ~= "jabber:server" then
+       elseif stanza.attr.xmlns and 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);
@@ -74,7 +78,7 @@ function core_handle_stanza(origin, stanza)
        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
@@ -91,7 +95,7 @@ function core_handle_stanza(origin, stanza)
                                                core_route_stanza(origin, stanza);
                                        end
                                end
-                               if not origin.presence then -- presence probes on initial presence -- FIXME does unavailable qualify as 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 -- probe all contacts we are subscribed to
                                                local subscription = origin.roster[jid].subscription;
@@ -100,16 +104,42 @@ function core_handle_stanza(origin, stanza)
                                                        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?
+                                       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
-                                       -- TODO resend subscription requests
+                                       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
+                               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
@@ -189,6 +219,7 @@ function handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_b
        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)
@@ -229,7 +260,7 @@ end
 function core_route_stanza(origin, stanza)
        -- Hooks
        --- ...later
-       
+
        -- Deliver
        local to = stanza.attr.to;
        local node, host, resource = jid_split(to);
@@ -252,22 +283,28 @@ function core_route_stanza(origin, stanza)
                                        if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then
                                                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. 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);
+                                       for _, session in pairs(recipient) do
+                                               session.send(stanza);
+                                       end
                                else
                                        -- TODO send IQ error
                                end