prosody
c0bd5daa9c7f
plugins/mod_csi_simple.lua

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plugins/mod_csi_simple.lua @ 10115:c0bd5daa9c7f

mod_s2s: Distinguish between high and low level errors in bounces `remote-server-not-found` is reported for problems occurring without a reply `<stream>` having been opened, e.g. DNS records were not found or no TCP stream could be established to a functioning XMPP entity. `remote-server-timeout` is reported for problems that occurring after a stream has been opened, such as configuration problems, inability to perform TLS or unsuccessful certificate validation. Related: #770
author Kim Alvefur <zash@zash.se>
date Thu, 01 Aug 2019 05:25:34 +0200
parent 10025:4498f601516d
child 10277:45a58127a3e5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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 filters = require "util.filters";
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13
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14 local queue_size = module:get_option_number("csi_queue_size", 256);
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15
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16 module:hook("csi-is-stanza-important", function (event)
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17 local stanza = event.stanza;
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18 if not st.is_stanza(stanza) then
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19 return true;
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20 end
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21 local st_name = stanza.name;
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22 if not st_name then return false; end
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23 local st_type = stanza.attr.type;
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24 if st_name == "presence" then
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25 if st_type == nil or st_type == "unavailable" then
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26 return false;
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27 end
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28 return true;
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29 elseif st_name == "message" then
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30 if st_type == "headline" then
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31 return false;
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32 end
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33 if stanza:get_child("sent", "urn:xmpp:carbons:2") then
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34 return true;
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35 end
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36 local forwarded = stanza:find("{urn:xmpp:carbons:2}received/{urn:xmpp:forward:0}/{jabber:client}message");
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37 if forwarded then
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38 stanza = forwarded;
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39 end
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40 if stanza:get_child("body") then
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41 return true;
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42 end
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43 if stanza:get_child("subject") then
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44 return true;
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45 end
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46 if stanza:get_child("encryption", "urn:xmpp:eme:0") then
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47 return true;
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48 end
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49 return false;
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50 end
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51 return true;
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52 end, -1);
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53
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54 local function with_timestamp(stanza, from)
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55 if st.is_stanza(stanza) and stanza.attr.xmlns == nil and stanza.name ~= "iq" then
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56 stanza = st.clone(stanza);
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57 stanza:add_direct_child(st.stanza("delay", {xmlns = "urn:xmpp:delay", from = from, stamp = dt.datetime()}));
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58 end
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59 return stanza;
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60 end
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61
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62 local function manage_buffer(stanza, session)
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63 local ctr = session.csi_counter or 0;
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64 if ctr >= queue_size then
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65 session.log("debug", "Queue size limit hit, flushing buffer (queue size is %d)", session.csi_counter);
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66 session.conn:resume_writes();
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67 elseif module:fire_event("csi-is-stanza-important", { stanza = stanza, session = session }) then
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68 session.log("debug", "Important stanza, flushing buffer (queue size is %d)", session.csi_counter);
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69 session.conn:resume_writes();
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70 else
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71 stanza = with_timestamp(stanza, jid.join(session.username, session.host))
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72 end
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73 session.csi_counter = ctr + 1;
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74 return stanza;
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75 end
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76
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77 local function flush_buffer(data, session)
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78 session.log("debug", "Client sent something, flushing buffer once (queue size is %d)", session.csi_counter);
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79 session.conn:resume_writes();
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80 return data;
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81 end
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82
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83 function enable_optimizations(session)
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84 if session.conn and session.conn and session.conn.pause_writes then
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85 session.conn:pause_writes();
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86 filters.add_filter(session, "stanzas/out", manage_buffer);
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87 filters.add_filter(session, "bytes/in", flush_buffer);
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88 else
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89 session.log("warn", "Session connection does not support write pausing");
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90 end
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91 end
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92
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93 function disable_optimizations(session)
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94 if session.conn and session.conn and session.conn.resume_writes then
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95 filters.remove_filter(session, "stanzas/out", manage_buffer);
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96 filters.remove_filter(session, "bytes/in", flush_buffer);
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97 session.conn:resume_writes();
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98 end
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99 end
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100
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101 module:hook("csi-client-inactive", function (event)
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102 local session = event.origin;
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103 enable_optimizations(session);
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104 end);
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105
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106 module:hook("csi-client-active", function (event)
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107 local session = event.origin;
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108 disable_optimizations(session);
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109 end);
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110
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111 module:hook("pre-resource-unbind", function (event)
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112 local session = event.session;
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113 disable_optimizations(session);
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114 end);
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115
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116 module:hook("c2s-ondrain", function (event)
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117 local session = event.session;
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118 if session.state == "inactive" and session.conn and session.conn and session.conn.pause_writes then
9923
e83dfcdeab59 mod_csi_simple: Include queue size in debug messages
Kim Alvefur <zash@zash.se>
parents: 9922
diff changeset
119 session.conn:pause_writes();
e83dfcdeab59 mod_csi_simple: Include queue size in debug messages
Kim Alvefur <zash@zash.se>
parents: 9922
diff changeset
120 session.log("debug", "Buffer flushed, resuming inactive mode (queue size was %d)", session.csi_counter);
9912
601f9781a605 mod_csi_simple: Count buffered items and flush when it reaches configured limit
Kim Alvefur <zash@zash.se>
parents: 9911
diff changeset
121 session.csi_counter = 0;
601f9781a605 mod_csi_simple: Count buffered items and flush when it reaches configured limit
Kim Alvefur <zash@zash.se>
parents: 9911
diff changeset
122 end
601f9781a605 mod_csi_simple: Count buffered items and flush when it reaches configured limit
Kim Alvefur <zash@zash.se>
parents: 9911
diff changeset
123 end);
9919
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
124
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
125 function module.load()
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
126 for _, user_session in pairs(prosody.hosts[module.host].sessions) do
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
127 for _, session in pairs(user_session.sessions) do
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
128 if session.state == "inactive" then
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
129 enable_optimizations(session);
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
130 end
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
131 end
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
132 end
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
133 end
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
134
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
135 function module.unload()
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
136 for _, user_session in pairs(prosody.hosts[module.host].sessions) do
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
137 for _, session in pairs(user_session.sessions) do
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
138 if session.state == "inactive" then
9922
06bf5ccd859f mod_csi_simple: Fix type in function name
Matthew Wild <mwild1@gmail.com>
parents: 9921
diff changeset
139 disable_optimizations(session);
9919
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
140 end
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
141 end
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
142 end
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
143 end