Mercurial > prosody-modules

annotate mod_bidi/mod_bidi.lua @ 1122:6094d57c5387

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
mod_bidi: Minor cleanup
author Kim Alvefur <zash@zash.se>
date Fri, 02 Aug 2013 18:21:14 +0200
parents c714ed7de4ee
children 0e16e5e2f410
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
892
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
1 -- Bidirectional Server-to-Server Connections
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
2 -- http://xmpp.org/extensions/xep-0288.html
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
3 -- Copyright (C) 2013 Kim Alvefur
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
4 --
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
5 -- This file is MIT/X11 licensed.
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
6 --
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
7 local add_filter = require "util.filters".add_filter;
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
8 local st = require "util.stanza";
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
9 local jid_split = require"util.jid".prepped_split;
1121
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
10 local core_process_stanza = prosody.core_process_stanza;
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
11 local traceback = debug.traceback;
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
12 local hosts = hosts;
892
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
13 local xmlns_bidi_feature = "urn:xmpp:features:bidi"
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
14 local xmlns_bidi = "urn:xmpp:bidi";
1121
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
15 local bidi_sessions = module:shared"sessions";
892
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
16
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
17 local function handleerr(err) log("error", "Traceback[s2s]: %s: %s", tostring(err), traceback()); end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
18 local function handlestanza(session, stanza)
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
19 if stanza.attr.xmlns == "jabber:client" then --COMPAT: Prosody pre-0.6.2 may send jabber:client
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
20 stanza.attr.xmlns = nil;
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
21 end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
22 -- stanza = session.filter("stanzas/in", stanza);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
23 if stanza then
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
24 return xpcall(function () return core_process_stanza(session, stanza) end, handleerr);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
25 end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
26 end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
27
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
28 local function new_bidi(origin)
1121
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
29 if origin.type == "s2sin" then -- then we create an "outgoing" bidirectional session
893
602e4c509095 mod_bidi: Close conflicting outgoing sessions when bidi is initiated, not requested.
Kim Alvefur <zash@zash.se>
parents: 892
diff changeset
30 local conflicting_session = hosts[origin.to_host].s2sout[origin.from_host]
602e4c509095 mod_bidi: Close conflicting outgoing sessions when bidi is initiated, not requested.
Kim Alvefur <zash@zash.se>
parents: 892
diff changeset
31 if conflicting_session then
894
d066987e00b7 mod_bidi: Lower severity of notice about outgoing stream being replaced by bidi
Kim Alvefur <zash@zash.se>
parents: 893
diff changeset
32 conflicting_session.log("info", "We already have an outgoing connection to %s, closing it...", origin.from_host);
893
602e4c509095 mod_bidi: Close conflicting outgoing sessions when bidi is initiated, not requested.
Kim Alvefur <zash@zash.se>
parents: 892
diff changeset
33 conflicting_session:close{ condition = "conflict", text = "Replaced by bidirectional stream" }
602e4c509095 mod_bidi: Close conflicting outgoing sessions when bidi is initiated, not requested.
Kim Alvefur <zash@zash.se>
parents: 892
diff changeset
34 end
1121
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
35 bidi_sessions[origin.from_host] = origin;
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
36 elseif origin.type == "s2sout" then -- handle incoming stanzas correctly
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
37 local bidi_session = {
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
38 type = "s2sin";
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
39 is_bidi = true; orig_session = origin;
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
40 to_host = origin.from_host;
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
41 from_host = origin.to_host;
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
42 hosts = {};
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
43 }
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
44 origin.bidi_session = bidi_session;
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
45 setmetatable(bidi_session, { __index = origin });
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
46 module:fire_event("s2s-authenticated", { session = bidi_session, host = origin.to_host });
892
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
47 remote_host = origin.to_host;
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
48 add_filter(origin, "stanzas/in", function(stanza)
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
49 if stanza.attr.xmlns ~= nil then return stanza end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
50 local _, host = jid_split(stanza.attr.from);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
51 if host ~= remote_host then return stanza end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
52 handlestanza(bidi_session, stanza);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
53 end, 1);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
54 end
1121
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
55 end
892
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
56
1121
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
57 module:hook("route/remote", function(event)
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
58 local from_host, to_host, stanza = event.from_host, event.to_host, event.stanza;
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
59 if from_host ~= module.host then return end
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
60 local to_session = bidi_sessions[to_host]
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
61 if not to_session then return end
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
62 return to_session.sends2s(stanza);
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
63 end, -2);
892
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
64
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
65 -- Incoming s2s
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
66 module:hook("s2s-stream-features", function(event)
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
67 local origin, features = event.origin, event.features;
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
68 if not origin.is_bidi and not hosts[module.host].s2sout[origin.from_host] then
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
69 module:log("debug", "Announcing support for bidirectional streams");
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
70 features:tag("bidi", { xmlns = xmlns_bidi_feature }):up();
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
71 end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
72 end);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
73
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
74 module:hook("stanza/urn:xmpp:bidi:bidi", function(event)
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
75 local origin = event.session or event.origin;
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
76 if not origin.is_bidi and not origin.bidi_session then
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
77 module:log("debug", "%s requested bidirectional stream", origin.from_host);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
78 origin.do_bidi = true;
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
79 return true;
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
80 end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
81 end);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
82
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
83 -- Outgoing s2s
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
84 module:hook("stanza/http://etherx.jabber.org/streams:features", function(event)
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
85 local origin = event.session or event.origin;
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
86 if not ( origin.bidi_session or origin.is_bidi or origin.do_bidi)
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
87 and event.stanza:get_child("bidi", xmlns_bidi_feature) then
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
88 module:log("debug", "%s supports bidirectional streams", origin.to_host);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
89 origin.sends2s(st.stanza("bidi", { xmlns = xmlns_bidi }));
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
90 origin.do_bidi = true;
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
91 end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
92 end, 160);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
93
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
94 function enable_bidi(event)
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
95 local session = event.session;
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
96 if session.do_bidi and not ( session.is_bidi or session.bidi_session ) then
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
97 session.do_bidi = nil;
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
98 new_bidi(session);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
99 end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
100 end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
101
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
102 module:hook("s2sin-established", enable_bidi);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
103 module:hook("s2sout-established", enable_bidi);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
104
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
105 function disable_bidi(event)
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
106 local session = event.session;
1122
6094d57c5387 mod_bidi: Minor cleanup
Kim Alvefur <zash@zash.se>
parents: 1121
diff changeset
107 if session.type == "s2sin" then
1121
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
108 bidi_sessions[session.from_host] = nil;
892
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
109 end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
110 end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
111
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
112 module:hook("s2sin-destroyed", disable_bidi);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
113 module:hook("s2sout-destroyed", disable_bidi);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
114