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fdefc43bffff
plugins/mod_csi_simple.lua

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plugins/mod_csi_simple.lua @ 9632:fdefc43bffff 0.11

mod_csi_simple: Consider non-stanza objects important Most cases are for keepalive or stream closing, where it needs to be flushed anyways.
author Kim Alvefur <zash@zash.se>
date Sat, 17 Nov 2018 15:36:10 +0100
parent 9631:d6104aaf94bc
child 9644:e31547ab1ca2
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1 -- Copyright (C) 2016-2018 Kim Alvefur
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2 --
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3 -- This project is MIT/X11 licensed. Please see the
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4 -- COPYING file in the source package for more information.
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5 --
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6
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7 module:depends"csi"
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8
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9 local jid = require "util.jid";
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10 local st = require "util.stanza";
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11 local dt = require "util.datetime";
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12 local new_queue = require "util.queue".new;
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13
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14 local function new_pump(output, ...)
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15 -- luacheck: ignore 212/self
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16 local q = new_queue(...);
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17 local flush = true;
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18 function q:pause()
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19 flush = false;
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20 end
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21 function q:resume()
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22 flush = true;
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23 return q:flush();
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24 end
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25 local push = q.push;
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26 function q:push(item)
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27 local ok = push(self, item);
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28 if not ok then
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29 q:flush();
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30 output(item, self);
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31 elseif flush then
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32 return q:flush();
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33 end
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34 return true;
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35 end
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36 function q:flush()
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37 local item = self:pop();
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38 while item do
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39 output(item, self);
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40 item = self:pop();
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41 end
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42 return true;
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43 end
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44 return q;
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45 end
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46
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47 local queue_size = module:get_option_number("csi_queue_size", 256);
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48
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49 module:hook("csi-is-stanza-important", function (event)
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50 local stanza = event.stanza;
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51 if not st.is_stanza(stanza) then
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52 return true;
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53 end
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54 local st_name = stanza.name;
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55 if not st_name then return false; end
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56 local st_type = stanza.attr.type;
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57 if st_name == "presence" then
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58 if st_type == nil or st_type == "unavailable" then
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59 return false;
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60 end
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61 return true;
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62 elseif st_name == "message" then
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63 if st_type == "headline" then
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64 return false;
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65 end
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66 local body = stanza:get_child_text("body");
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67 return body;
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68 end
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69 return true;
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70 end, -1);
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71
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72 module:hook("csi-client-inactive", function (event)
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73 local session = event.origin;
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74 if session.pump then
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75 session.pump:pause();
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76 else
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77 local bare_jid = jid.join(session.username, session.host);
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78 local send = session.send;
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79 session._orig_send = send;
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80 local pump = new_pump(session.send, queue_size);
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81 pump:pause();
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82 session.pump = pump;
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83 function session.send(stanza)
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84 if module:fire_event("csi-stanza-is-important", { stanza = stanza, session = session }) then
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85 pump:flush();
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86 send(stanza);
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87 else
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88 if st.is_stanza(stanza) then
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89 stanza = st.clone(stanza);
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90 stanza:add_direct_child(st.stanza("delay", {xmlns = "urn:xmpp:delay", from = bare_jid, stamp = dt.datetime()}));
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91 end
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92 pump:push(stanza);
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93 end
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94 return true;
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95 end
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96 end
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97 end);
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98
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99 module:hook("csi-client-active", function (event)
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100 local session = event.origin;
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101 if session.pump then
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102 session.pump:resume();
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103 end
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104 end);
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105