prosody-modules
dc30ca5ce315
mod_csi_pump/mod_csi_pump.lua

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mod_csi_pump/mod_csi_pump.lua @ 2455:dc30ca5ce315

mod_csi_pump: Lossless CSI mode
author Kim Alvefur <zash@zash.se>
date Sun, 22 Jan 2017 00:41:11 +0100
child 2460:3ed504b944e5
comparison
equal deleted inserted replaced
2454:51cf82d36a8a 2455:dc30ca5ce315
1 -- Copyright (C) 2016 Kim Alvefur
2 --
3
4 module:depends"csi"
5 module:depends"track_muc_joins"
6 local jid = require "util.jid";
7 local new_queue = require "util.queue".new;
8
9 local function new_pump(output, ...)
10 -- luacheck: ignore 212/self
11 local q = new_queue(...);
12 local flush = true;
13 function q:pause()
14 flush = false;
15 end
16 function q:resume()
17 flush = true;
18 return q:flush();
19 end
20 local push = q.push;
21 function q:push(item)
22 local ok = push(self, item);
23 if not ok then
24 q:flush();
25 output(item, self);
26 elseif flush then
27 return q:flush();
28 end
29 return true;
30 end
31 function q:flush()
32 local item = self:pop();
33 while item do
34 output(item, self);
35 item = self:pop();
36 end
37 return true;
38 end
39 return q;
40 end
41
42 -- TODO delay stamps
43 -- local dt = require "util.datetime";
44
45 local function is_important(stanza, session)
46 local st_name = stanza.name;
47 if not st_name then return false; end
48 local st_type = stanza.attr.type;
49 if st_name == "presence" then
50 -- TODO check for MUC status codes?
51 return false;
52 elseif st_name == "message" then
53 if st_type == "headline" then
54 return false;
55 end
56 local body = stanza:get_child_text("body");
57 if not body then return false; end
58 if st_type == "groupchat" then
59 if body:find(session.username, 1, true) then return true; end
60 local rooms = session.rooms_joined;
61 if not rooms then return false; end
62 local room_nick = rooms[jid.bare(stanza.attr.from)];
63 if room_nick and body:find(room_nick, 1, true) then return true; end
64 return false;
65 end
66 return body;
67 end
68 return true;
69 end
70
71 module:hook("csi-client-inactive", function (event)
72 local session = event.origin;
73 if session.pump then
74 session.pump:pause();
75 else
76 session._orig_send = session.send;
77 local pump = new_pump(session.send, 100);
78 pump:pause();
79 session.pump = pump;
80 function session.send(stanza)
81 pump:push(stanza);
82 if is_important(stanza, session) then
83 pump:flush();
84 end
85 return true;
86 end
87 end
88 end);
89
90 module:hook("csi-client-active", function (event)
91 local session = event.origin;
92 if session.pump then
93 session.pump:resume();
94 end
95 end);
96