annotate mod_bidi/mod_bidi.lua @ 2637:39c39844cd4c

mod_list_active: Inverse of mod_list_inactive (closes #705)
author Kim Alvefur <zash@zash.se>
date Wed, 22 Mar 2017 14:53:15 +0100
parents db2ff8f29472
children 8e7d400d4db3
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";
1123
0e16e5e2f410 mod_bidi: Only allow or offer bidi on secure connections, with an option to revert to previous behaviour
Kim Alvefur <zash@zash.se>
parents: 1122
diff changeset
15 local secure_only = module:get_option_boolean("secure_bidi_only", true);
1387
db2ff8f29472 mod_bidi: Add option for selectively not doing bidi with some hosts
Kim Alvefur <zash@zash.se>
parents: 1191
diff changeset
16 local disable_bidi_for = module:get_option_set("no_bidi_with", { });
1127
38e56be11584 mod_bidi: Make sessions table weak
Kim Alvefur <zash@zash.se>
parents: 1126
diff changeset
17 local bidi_sessions = module:shared"sessions-cache";
892
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
18
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
19 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
20 local function handlestanza(session, stanza)
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
21 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
22 stanza.attr.xmlns = nil;
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
23 end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
24 -- stanza = session.filter("stanzas/in", stanza);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
25 if stanza then
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
26 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
27 end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
28 end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
29
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
30 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
31 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
32 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
33 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
34 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
35 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
36 end
1121
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
37 bidi_sessions[origin.from_host] = origin;
1191
1818a7f08580 mod_bidi: Add missing 'is_bidi' flag for incoming s2s
Kim Alvefur <zash@zash.se>
parents: 1129
diff changeset
38 origin.is_bidi = true;
1121
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
39 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
40 local bidi_session = {
1124
689e69df1cc4 mod_bidi: Make sure context for stanzas coming from bidi-enabled s2sout connections have the correct direction attribute
Kim Alvefur <zash@zash.se>
parents: 1123
diff changeset
41 type = "s2sin"; direction = "incoming";
1121
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
42 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
43 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
44 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
45 hosts = {};
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
46 }
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
47 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
48 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
49 module:fire_event("s2s-authenticated", { session = bidi_session, host = origin.to_host });
1125
901e361af918 mod_bidi: Fix accidentally module-global value
Kim Alvefur <zash@zash.se>
parents: 1124
diff changeset
50 local remote_host = origin.to_host;
892
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
51 add_filter(origin, "stanzas/in", function(stanza)
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
52 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
53 local _, host = jid_split(stanza.attr.from);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
54 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
55 handlestanza(bidi_session, stanza);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
56 end, 1);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
57 end
1121
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
58 end
892
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
59
1121
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
60 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
61 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
62 if from_host ~= module.host then return end
1128
6b344b7e4781 mod_bidi: Allow route/remote event to continue if we couldn't send a stanza (in case the session was destroyed)
Kim Alvefur <zash@zash.se>
parents: 1127
diff changeset
63 local to_session = bidi_sessions[to_host];
1126
6fd328b8e136 mod_bidi: Don't try to send on destroyed sessions
Kim Alvefur <zash@zash.se>
parents: 1125
diff changeset
64 if not to_session or to_session.type ~= "s2sin" then return end
1129
ae0fa4d2005d mod_bidi: Revert to sends2s (Go to sleep zash, you're too tired to code)
Kim Alvefur <zash@zash.se>
parents: 1128
diff changeset
65 if to_session.sends2s(stanza) then return true end
1121
c714ed7de4ee mod_bidi: Clean up and use 0.9+ routing APIs
Kim Alvefur <zash@zash.se>
parents: 932
diff changeset
66 end, -2);
892
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
67
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
68 -- Incoming s2s
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
69 module:hook("s2s-stream-features", function(event)
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
70 local origin, features = event.origin, event.features;
1191
1818a7f08580 mod_bidi: Add missing 'is_bidi' flag for incoming s2s
Kim Alvefur <zash@zash.se>
parents: 1129
diff changeset
71 if not origin.is_bidi and not origin.bidi_session and not origin.do_bidi
1818a7f08580 mod_bidi: Add missing 'is_bidi' flag for incoming s2s
Kim Alvefur <zash@zash.se>
parents: 1129
diff changeset
72 and not hosts[module.host].s2sout[origin.from_host]
1387
db2ff8f29472 mod_bidi: Add option for selectively not doing bidi with some hosts
Kim Alvefur <zash@zash.se>
parents: 1191
diff changeset
73 and not disable_bidi_for:contains(origin.from_host)
1191
1818a7f08580 mod_bidi: Add missing 'is_bidi' flag for incoming s2s
Kim Alvefur <zash@zash.se>
parents: 1129
diff changeset
74 and (not secure_only or (origin.cert_chain_status == "valid"
1818a7f08580 mod_bidi: Add missing 'is_bidi' flag for incoming s2s
Kim Alvefur <zash@zash.se>
parents: 1129
diff changeset
75 and origin.cert_identity_status == "valid")) then
892
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
76 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
77 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
78 end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
79 end);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
80
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
81 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
82 local origin = event.session or event.origin;
1123
0e16e5e2f410 mod_bidi: Only allow or offer bidi on secure connections, with an option to revert to previous behaviour
Kim Alvefur <zash@zash.se>
parents: 1122
diff changeset
83 if not origin.is_bidi and not origin.bidi_session
1387
db2ff8f29472 mod_bidi: Add option for selectively not doing bidi with some hosts
Kim Alvefur <zash@zash.se>
parents: 1191
diff changeset
84 and not disable_bidi_for:contains(origin.from_host)
1123
0e16e5e2f410 mod_bidi: Only allow or offer bidi on secure connections, with an option to revert to previous behaviour
Kim Alvefur <zash@zash.se>
parents: 1122
diff changeset
85 and (not secure_only or origin.cert_chain_status == "valid"
0e16e5e2f410 mod_bidi: Only allow or offer bidi on secure connections, with an option to revert to previous behaviour
Kim Alvefur <zash@zash.se>
parents: 1122
diff changeset
86 and origin.cert_identity_status == "valid") then
892
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
87 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
88 origin.do_bidi = true;
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
89 return true;
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
90 end
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
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
93 -- Outgoing s2s
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
94 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
95 local origin = event.session or event.origin;
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
96 if not ( origin.bidi_session or origin.is_bidi or origin.do_bidi)
1387
db2ff8f29472 mod_bidi: Add option for selectively not doing bidi with some hosts
Kim Alvefur <zash@zash.se>
parents: 1191
diff changeset
97 and not disable_bidi_for:contains(origin.to_host)
1123
0e16e5e2f410 mod_bidi: Only allow or offer bidi on secure connections, with an option to revert to previous behaviour
Kim Alvefur <zash@zash.se>
parents: 1122
diff changeset
98 and event.stanza:get_child("bidi", xmlns_bidi_feature)
0e16e5e2f410 mod_bidi: Only allow or offer bidi on secure connections, with an option to revert to previous behaviour
Kim Alvefur <zash@zash.se>
parents: 1122
diff changeset
99 and (not secure_only or origin.cert_chain_status == "valid"
0e16e5e2f410 mod_bidi: Only allow or offer bidi on secure connections, with an option to revert to previous behaviour
Kim Alvefur <zash@zash.se>
parents: 1122
diff changeset
100 and origin.cert_identity_status == "valid") then
892
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
101 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
102 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
103 origin.do_bidi = true;
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
104 end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
105 end, 160);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
106
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
107 function enable_bidi(event)
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
108 local session = event.session;
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
109 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
110 session.do_bidi = nil;
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
111 new_bidi(session);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
112 end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
113 end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
114
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
115 module:hook("s2sin-established", enable_bidi);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
116 module:hook("s2sout-established", enable_bidi);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
117
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
118 function disable_bidi(event)
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
119 local session = event.session;
1122
6094d57c5387 mod_bidi: Minor cleanup
Kim Alvefur <zash@zash.se>
parents: 1121
diff changeset
120 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
121 bidi_sessions[session.from_host] = nil;
892
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
122 end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
123 end
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
124
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
125 module:hook("s2sin-destroyed", disable_bidi);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
126 module:hook("s2sout-destroyed", disable_bidi);
148865199003 mod_bidi: Initial commit of XEP-0288 implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
127