2 -- Copyright (C) 2008-2010 Matthew Wild
3 -- Copyright (C) 2008-2010 Waqas Hussain
5 -- This project is MIT/X11 licensed. Please see the
6 -- COPYING file in the source package for more information.
9 local log = require "util.logger".init("stanzarouter")
11 local hosts = _G.prosody.hosts;
12 local tostring = tostring;
13 local st = require "util.stanza";
14 local send_s2s = require "core.s2smanager".send_to_host;
15 local modules_handle_stanza = require "core.modulemanager".handle_stanza;
16 local component_handle_stanza = require "core.componentmanager".handle_stanza;
17 local jid_split = require "util.jid".split;
18 local jid_prepped_split = require "util.jid".prepped_split;
20 local full_sessions = _G.prosody.full_sessions;
21 local bare_sessions = _G.prosody.bare_sessions;
23 function core_process_stanza(origin, stanza)
24 (origin.log or log)("debug", "Received[%s]: %s", origin.type, stanza:top_tag())
26 -- TODO verify validity of stanza (as well as JID validity)
27 if stanza.attr.type == "error" and #stanza.tags == 0 then return; end -- TODO invalid stanza, log
28 if stanza.name == "iq" then
29 if not stanza.attr.id then stanza.attr.id = ""; end -- COMPAT Jabiru doesn't send the id attribute on roster requests
30 if (stanza.attr.type == "set" or stanza.attr.type == "get") and (#stanza.tags ~= 1) then
31 origin.send(st.error_reply(stanza, "modify", "bad-request"));
36 if origin.type == "c2s" and not stanza.attr.xmlns then
37 if not origin.full_jid
38 and not(stanza.name == "iq" and stanza.attr.type == "set" and stanza.tags[1] and stanza.tags[1].name == "bind"
39 and stanza.tags[1].attr.xmlns == "urn:ietf:params:xml:ns:xmpp-bind") then
40 -- authenticated client isn't bound and current stanza is not a bind request
41 if stanza.attr.type ~= "result" and stanza.attr.type ~= "error" then
42 origin.send(st.error_reply(stanza, "auth", "not-authorized")); -- FIXME maybe allow stanzas to account or server
47 -- TODO also, stanzas should be returned to their original state before the function ends
48 stanza.attr.from = origin.full_jid;
50 local to, xmlns = stanza.attr.to, stanza.attr.xmlns;
51 local from = stanza.attr.from;
52 local node, host, resource;
53 local from_node, from_host, from_resource;
54 local to_bare, from_bare;
56 if full_sessions[to] or bare_sessions[to] or hosts[to] then
57 node, host = jid_split(to); -- TODO only the host is needed, optimize
59 node, host, resource = jid_prepped_split(to);
61 log("warn", "Received stanza with invalid destination JID: %s", to);
62 if stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then
63 origin.send(st.error_reply(stanza, "modify", "jid-malformed", "The destination address is invalid: "..to));
67 to_bare = node and (node.."@"..host) or host; -- bare JID
68 if resource then to = to_bare.."/"..resource; else to = to_bare; end
72 if from and not origin.full_jid then
73 -- We only stamp the 'from' on c2s stanzas, so we still need to check validity
74 from_node, from_host, from_resource = jid_prepped_split(from);
76 log("warn", "Received stanza with invalid source JID: %s", from);
77 if stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then
78 origin.send(st.error_reply(stanza, "modify", "jid-malformed", "The source address is invalid: "..from));
82 from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID
83 if from_resource then from = from_bare.."/"..from_resource; else from = from_bare; end
84 stanza.attr.from = from;
87 --[[if to and not(hosts[to]) and not(hosts[to_bare]) and (hosts[host] and hosts[host].type ~= "local") then -- not for us?
88 log("warn", "stanza recieved for a non-local server");
89 return; -- FIXME what should we do here?
92 if (origin.type == "s2sin" or origin.type == "c2s" or origin.type == "component") and xmlns == nil then
93 if origin.type == "s2sin" and not origin.dummy then
94 local host_status = origin.hosts[from_host];
95 if not host_status or not host_status.authed then -- remote server trying to impersonate some other server?
96 log("warn", "Received a stanza claiming to be from %s, over a stream authed for %s!", from_host, origin.from_host);
97 return; -- FIXME what should we do here? does this work with subdomains?
100 core_post_stanza(origin, stanza, origin.full_jid);
102 local h = hosts[stanza.attr.to or origin.host or origin.to_host];
106 if stanza.name == "iq" and (stanza.attr.type == "set" or stanza.attr.type == "get") then
107 event = "stanza/iq/"..stanza.tags[1].attr.xmlns..":"..stanza.tags[1].name;
109 event = "stanza/"..stanza.name;
112 event = "stanza/"..xmlns..":"..stanza.name;
114 if h.events.fire_event(event, {origin = origin, stanza = stanza}) then return; end
116 if host and not hosts[host] then host = nil; end -- COMPAT: workaround for a Pidgin bug which sets 'to' to the SRV result
117 modules_handle_stanza(host or origin.host or origin.to_host, origin, stanza);
121 function core_post_stanza(origin, stanza, preevents)
122 local to = stanza.attr.to;
123 local node, host, resource = jid_split(to);
124 local to_bare = node and (node.."@"..host) or host; -- bare JID
126 local to_type, to_self;
132 if node == origin.username and host == origin.host then
133 stanza.attr.to = nil;
146 local event_data = {origin=origin, stanza=stanza};
147 if preevents then -- c2s connection
148 if hosts[origin.host].events.fire_event('pre-'..stanza.name..to_type, event_data) then return; end -- do preprocessing
150 local h = hosts[to_bare] or hosts[host or origin.host];
152 if h.events.fire_event(stanza.name..to_type, event_data) then return; end -- do processing
153 if to_self and h.events.fire_event(stanza.name..'/self', event_data) then return; end -- do processing
155 if h.type == "component" then
156 component_handle_stanza(origin, stanza);
159 modules_handle_stanza(h.host, origin, stanza);
161 core_route_stanza(origin, stanza);
165 function core_route_stanza(origin, stanza)
166 local node, host, resource = jid_split(stanza.attr.to);
167 local from_node, from_host, from_resource = jid_split(stanza.attr.from);
169 -- Auto-detect origin if not specified
170 origin = origin or hosts[from_host];
171 if not origin then return false; end
174 -- old stanza routing code removed
175 core_post_stanza(origin, stanza);
176 elseif origin.type == "c2s" then
178 if not hosts[from_host] then
179 log("error", "No hosts[from_host] (please report): %s", tostring(stanza));
181 if (not hosts[from_host]) or (not hosts[from_host].disallow_s2s) then
182 local xmlns = stanza.attr.xmlns;
183 --stanza.attr.xmlns = "jabber:server";
184 stanza.attr.xmlns = nil;
185 log("debug", "sending s2s stanza: %s", tostring(stanza.top_tag and stanza:top_tag()) or stanza);
186 send_s2s(origin.host, host, stanza); -- TODO handle remote routing errors
187 stanza.attr.xmlns = xmlns; -- reset
189 core_route_stanza(hosts[from_host], st.error_reply(stanza, "cancel", "not-allowed", "Communication with remote servers is not allowed"));
191 elseif origin.type == "component" or origin.type == "local" then
192 -- Route via s2s for components and modules
193 log("debug", "Routing outgoing stanza for %s to %s", from_host, host);
194 send_s2s(from_host, host, stanza);
196 log("warn", "received %s stanza from unhandled connection type: %s", tostring(stanza.name), tostring(origin.type));