+-- Prosody IM v0.4
+-- Copyright (C) 2008-2009 Matthew Wild
+-- Copyright (C) 2008-2009 Waqas Hussain
+--
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+
local log = require "util.logger".init("stanzarouter")
+local hosts = _G.hosts;
+
local st = require "util.stanza";
local send_s2s = require "core.s2smanager".send_to_host;
local user_exists = require "core.usermanager".user_exists;
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 handle_outbound_presence_subscriptions_and_probes = function()end;--require "core.presencemanager".handle_outbound_presence_subscriptions_and_probes;
+local handle_inbound_presence_subscriptions_and_probes = function()end;--require "core.presencemanager".handle_inbound_presence_subscriptions_and_probes;
+local handle_normal_presence = function()end;--require "core.presencemanager".handle_normal_presence;
local format = string.format;
local tostring = tostring;
local t_insert = table.insert;
local tonumber = tonumber;
local s_find = string.find;
+local pairs = pairs;
+local ipairs = ipairs;
local jid_split = require "util.jid".split;
+local jid_prepped_split = require "util.jid".prepped_split;
local print = print;
+local fire_event = require "core.eventmanager2".fire_event;
+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)
- (origin.log or log)("debug", "Received[%s]: %s", origin.type, stanza:pretty_print()) --top_tag())
+ (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("Invalid IQ");
- elseif #stanza.tags > 1 and not(stanza.attr.type == "error" or stanza.attr.type == "result") then
- error("Invalid IQ");
+ if stanza.attr.xmlns == "error" and #stanza.tags == 0 then return; end -- TODO invalid stanza, log
+ if stanza.name == "iq" then
+ if (stanza.attr.type == "set" or stanza.attr.type == "get") and #stanza.tags ~= 1 then
+ origin.send(st.error_reply(stanza, "modify", "bad-request"));
+ return;
end
end
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 to, xmlns = stanza.attr.to, stanza.attr.xmlns;
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?
+ 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" then
+ if (origin.type == "s2sin" or origin.type == "c2s" or origin.type == "component") and (not xmlns or xmlns == "jabber:server" or xmlns == "jabber:client") then
+ local event_data = {origin=origin, stanza=stanza};
+ fire_event(tostring(host or origin.host).."/"..stanza.name, event_data);
+ 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 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 -- directed presence
+ origin.directed = origin.directed or {};
+ origin.directed[to] = true;
+ --t_insert(origin.directed, to); -- FIXME does it make more sense to add to_bare rather than to?
+ 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_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[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
+ elseif origin.type == "c2s" and stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error" 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
+ elseif hosts[host] and hosts[host].type == "local" and stanza.name == "iq" and not resource then -- directed at bare JID
core_handle_stanza(origin, stanza);
else
core_route_stanza(origin, stanza);
-- that is, they are handled by this server
function core_handle_stanza(origin, stanza)
-- Handlers
- if modules_handle_stanza(stanza.attr.to or origin.host, 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
- handle_normal_presence(origin, stanza, core_route_stanza);
- else
- log("warn", "Unhandled c2s presence: %s", tostring(stanza));
- if (stanza.attr.xmlns == "jabber:client" or stanza.attr.xmlns == "jabber:server") and stanza.attr.type ~= "error" then
- origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error?
+ 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" and stanza.attr.type ~= "error" then
+ handle_normal_presence(origin, stanza, core_route_stanza);
+ else
+ log("warn", "Unhandled c2s presence: %s", tostring(stanza));
+ checked_error_reply(origin, stanza);
end
+ else
+ log("warn", "Unhandled c2s stanza: %s", tostring(stanza));
+ checked_error_reply(origin, stanza);
end
- else
- log("warn", "Unhandled c2s stanza: %s", tostring(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 -- TODO handle other stanzas
- else
- log("warn", "Unhandled origin: %s", origin.type);
- if (stanza.attr.xmlns == "jabber:client" or stanza.attr.xmlns == "jabber:server") and stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then
- -- s2s stanzas can get here
- origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error?
+ else -- s2s stanzas
+ log("warn", "Unhandled s2s stanza: %s", tostring(stanza));
+ checked_error_reply(origin, stanza);
end
+ else
+ log("warn", "Unhandled %s stanza: %s", origin.type, tostring(stanza));
+ checked_error_reply(origin, stanza);
end
end
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
+ if hosts[to] and hosts[to].type == "component" then -- hack to allow components to handle node@server/resource and server/resource
+ return component_handle_stanza(origin, stanza);
+ elseif hosts[to_bare] and hosts[to_bare].type == "component" then -- hack to allow components to handle node@server
+ return component_handle_stanza(origin, stanza);
+ elseif hosts[host] and hosts[host].type == "component" then -- directed at a component
+ return component_handle_stanza(origin, stanza);
+ end
+
+ if stanza.name == "presence" and (stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error") then resource = nil; end
local host_session = hosts[host]
if host_session and host_session.type == "local" then
if not res then
-- 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 ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error" then
handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza);
- else -- sender is available or unavailable
+ elseif not resource then -- sender is available or unavailable or error
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
end
end
elseif stanza.name == "message" then -- select a resource to recieve message
- 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);
+ stanza.attr.to = to_bare;
+ if stanza.attr.type == 'headline' then
+ for _, session in pairs(user.sessions) do -- find resource with greatest priority
+ if session.presence and session.priority >= 0 then
+ session.send(stanza);
+ end
+ end
+ elseif resource and stanza.attr.type == 'groupchat' then
+ -- Groupchat message sent to offline resource
+ origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
+ else
+ local priority = 0;
+ local recipients = {};
+ for _, session in pairs(user.sessions) do -- find resource with greatest priority
+ if session.presence then
+ local p = session.priority;
+ if p > priority then
+ priority = p;
+ recipients = {session};
+ elseif p == priority then
+ t_insert(recipients, session);
+ end
+ end
+ end
+ local count = 0;
+ for _, session in ipairs(recipients) do
+ session.send(stanza);
+ count = count + 1;
+ end
+ if count == 0 and (stanza.attr.type == "chat" or stanza.attr.type == "normal" or not stanza.attr.type) then
+ offlinemanager.store(node, host, stanza);
+ -- TODO deal with storage errors
end
end
- 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
+ elseif stanza.attr.type == "get" or stanza.attr.type == "set" then
+ origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
end
else
-- User + resource is online...
-- user not online
if user_exists(node, host) then
if stanza.name == "presence" then
- if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then
+ if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error" then
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
+ elseif stanza.name == "message" then -- FIXME if full jid, then send out to resources with highest priority
+ stanza.attr.to = to_bare; -- TODO not in RFC, but seems obvious. Should discuss on the mailing list.
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
+ elseif stanza.attr.type == "groupchat" then
+ local reply = st.error_reply(stanza, "cancel", "service-unavailable");
+ reply.attr.from = to;
+ origin.send(reply);
end
-- TODO allow configuration of offline storage
-- TODO send error if not storing offline
- elseif stanza.name == "iq" then
- -- TODO send IQ error
+ elseif stanza.name == "iq" and (stanza.attr.type == "get" or stanza.attr.type == "set") then
+ 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
- else
+ elseif stanza.attr.type ~= "error" and (stanza.name ~= "iq" or stanza.attr.type ~= "result") then
origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
end
end
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