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 jid_split = require "util.jid".split;
15 local jid_prepped_split = require "util.jid".prepped_split;
17 local full_sessions = _G.prosody.full_sessions;
18 local bare_sessions = _G.prosody.bare_sessions;
20 local core_post_stanza, core_process_stanza, core_route_stanza;
22 function deprecated_warning(f)
24 log("warn", "Using the global %s() is deprecated, use module:send() or prosody.%s(). %s", f, f, debug.traceback());
25 return prosody[f](...);
28 deprecated_warning"core_post_stanza";
29 deprecated_warning"core_process_stanza";
30 deprecated_warning"core_route_stanza";
32 local valid_stanzas = { message = true, presence = true, iq = true };
33 local function handle_unhandled_stanza(host, origin, stanza)
34 local name, xmlns, origin_type = stanza.name, stanza.attr.xmlns or "jabber:client", origin.type;
35 if xmlns == "jabber:client" and valid_stanzas[name] then
37 local st_type = stanza.attr.type;
38 if st_type == "error" or (name == "iq" and st_type == "result") then
39 log("debug", "Discarding %s from %s of type: %s", name, origin_type, st_type or '<nil>');
42 if name == "iq" and (st_type == "get" or st_type == "set") and stanza.tags[1] then
43 xmlns = stanza.tags[1].attr.xmlns or "jabber:client";
45 log("debug", "Unhandled %s stanza: %s; xmlns=%s", origin_type, name, xmlns);
47 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
49 elseif not((name == "features" or name == "error") and xmlns == "http://etherx.jabber.org/streams") then -- FIXME remove check once we handle S2S features
50 log("warn", "Unhandled %s stream element or stanza: %s; xmlns=%s: %s", origin_type, name, xmlns, tostring(stanza)); -- we didn't handle it
51 origin:close("unsupported-stanza-type");
55 local iq_types = { set=true, get=true, result=true, error=true };
56 function core_process_stanza(origin, stanza)
57 (origin.log or log)("debug", "Received[%s]: %s", origin.type, stanza:top_tag())
59 if origin.type == "c2s" and not stanza.attr.xmlns then
60 local name, st_type = stanza.name, stanza.attr.type;
61 if st_type == "error" and #stanza.tags == 0 then
62 return handle_unhandled_stanza(origin.host, origin, stanza);
65 if not stanza.attr.id then stanza.attr.id = ""; end -- COMPAT Jabiru doesn't send the id attribute on roster requests
66 if not iq_types[st_type] or ((st_type == "set" or st_type == "get") and (#stanza.tags ~= 1)) then
67 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid IQ type or incorrect number of children"));
72 if not origin.full_jid
73 and not(name == "iq" and st_type == "set" and stanza.tags[1] and stanza.tags[1].name == "bind"
74 and stanza.tags[1].attr.xmlns == "urn:ietf:params:xml:ns:xmpp-bind") then
75 -- authenticated client isn't bound and current stanza is not a bind request
76 if stanza.attr.type ~= "result" and stanza.attr.type ~= "error" then
77 origin.send(st.error_reply(stanza, "auth", "not-authorized")); -- FIXME maybe allow stanzas to account or server
82 -- TODO also, stanzas should be returned to their original state before the function ends
83 stanza.attr.from = origin.full_jid;
85 local to, xmlns = stanza.attr.to, stanza.attr.xmlns;
86 local from = stanza.attr.from;
87 local node, host, resource;
88 local from_node, from_host, from_resource;
89 local to_bare, from_bare;
91 if full_sessions[to] or bare_sessions[to] or hosts[to] then
92 node, host = jid_split(to); -- TODO only the host is needed, optimize
94 node, host, resource = jid_prepped_split(to);
96 log("warn", "Received stanza with invalid destination JID: %s", to);
97 if stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then
98 origin.send(st.error_reply(stanza, "modify", "jid-malformed", "The destination address is invalid: "..to));
102 to_bare = node and (node.."@"..host) or host; -- bare JID
103 if resource then to = to_bare.."/"..resource; else to = to_bare; end
107 if from and not origin.full_jid then
108 -- We only stamp the 'from' on c2s stanzas, so we still need to check validity
109 from_node, from_host, from_resource = jid_prepped_split(from);
110 if not from_host then
111 log("warn", "Received stanza with invalid source JID: %s", from);
112 if stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then
113 origin.send(st.error_reply(stanza, "modify", "jid-malformed", "The source address is invalid: "..from));
117 from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID
118 if from_resource then from = from_bare.."/"..from_resource; else from = from_bare; end
119 stanza.attr.from = from;
122 if (origin.type == "s2sin" or origin.type == "c2s" or origin.type == "component") and xmlns == nil then
123 if origin.type == "s2sin" and not origin.dummy then
124 local host_status = origin.hosts[from_host];
125 if not host_status or not host_status.authed then -- remote server trying to impersonate some other server?
126 log("warn", "Received a stanza claiming to be from %s, over a stream authed for %s!", from_host, origin.from_host);
127 origin:close("not-authorized");
129 elseif not hosts[host] then
130 log("warn", "Remote server %s sent us a stanza for %s, closing stream", origin.from_host, host);
131 origin:close("host-unknown");
135 core_post_stanza(origin, stanza, origin.full_jid);
137 local h = hosts[stanza.attr.to or origin.host or origin.to_host];
141 if stanza.name == "iq" and (stanza.attr.type == "set" or stanza.attr.type == "get") then
142 event = "stanza/iq/"..stanza.tags[1].attr.xmlns..":"..stanza.tags[1].name;
144 event = "stanza/"..stanza.name;
147 event = "stanza/"..xmlns..":"..stanza.name;
149 if h.events.fire_event(event, {origin = origin, stanza = stanza}) then return; end
151 if host and not hosts[host] then host = nil; end -- COMPAT: workaround for a Pidgin bug which sets 'to' to the SRV result
152 handle_unhandled_stanza(host or origin.host or origin.to_host, origin, stanza);
156 function core_post_stanza(origin, stanza, preevents)
157 local to = stanza.attr.to;
158 local node, host, resource = jid_split(to);
159 local to_bare = node and (node.."@"..host) or host; -- bare JID
161 local to_type, to_self;
167 if node == origin.username and host == origin.host then
168 stanza.attr.to = nil;
181 local event_data = {origin=origin, stanza=stanza};
182 if preevents then -- c2s connection
183 if hosts[origin.host].events.fire_event('pre-'..stanza.name..to_type, event_data) then return; end -- do preprocessing
185 local h = hosts[to_bare] or hosts[host or origin.host];
187 if h.events.fire_event(stanza.name..to_type, event_data) then return; end -- do processing
188 if to_self and h.events.fire_event(stanza.name..'/self', event_data) then return; end -- do processing
189 handle_unhandled_stanza(h.host, origin, stanza);
191 core_route_stanza(origin, stanza);
195 function core_route_stanza(origin, stanza)
196 local node, host, resource = jid_split(stanza.attr.to);
197 local from_node, from_host, from_resource = jid_split(stanza.attr.from);
199 -- Auto-detect origin if not specified
200 origin = origin or hosts[from_host];
201 if not origin then return false; end
204 -- old stanza routing code removed
205 core_post_stanza(origin, stanza);
207 log("debug", "Routing to remote...");
208 local host_session = hosts[from_host];
209 if not host_session then
210 log("error", "No hosts[from_host] (please report): %s", tostring(stanza));
212 local xmlns = stanza.attr.xmlns;
213 stanza.attr.xmlns = nil;
214 local routed = host_session.events.fire_event("route/remote", { origin = origin, stanza = stanza, from_host = from_host, to_host = host });
215 stanza.attr.xmlns = xmlns; -- reset
217 log("debug", "... no, just kidding.");
218 if stanza.attr.type == "error" or (stanza.name == "iq" and stanza.attr.type == "result") then return; end
219 core_route_stanza(host_session, st.error_reply(stanza, "cancel", "not-allowed", "Communication with remote domains is not enabled"));
224 prosody.core_process_stanza = core_process_stanza;
225 prosody.core_post_stanza = core_post_stanza;
226 prosody.core_route_stanza = core_route_stanza;