prosody
3a1b1d3084fb
plugins/mod_csi_simple.lua

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plugins/mod_csi_simple.lua @ 10721:3a1b1d3084fb 0.11

core.certmanager: Move EECDH ciphers before EDH in default cipherstring (fixes #1513) Backport of 94e341dee51c The original intent of having kEDH before kEECDH was that if a `dhparam` file was specified, this would be interpreted as a preference by the admin for old and well-tested Diffie-Hellman key agreement over newer elliptic curve ones. Otherwise the faster elliptic curve ciphersuites would be preferred. This didn't really work as intended since this affects the ClientHello on outgoing s2s connections, leading to some servers using poorly configured kEDH. With Debian shipping OpenSSL settings that enforce a higher security level, this caused interoperability problems with servers that use DH params smaller than 2048 bits. E.g. jabber.org at the time of this writing has 1024 bit DH params. MattJ says > Curves have won, and OpenSSL is less weird about them now
author Kim Alvefur <zash@zash.se>
date Sun, 25 Aug 2019 20:22:35 +0200
parent 9771:bf92f37de137
child 9909:3229be01a08a
child 10816:b4c2c7fae7c0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 if stanza:get_child("sent", "urn:xmpp:carbons:2") then
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67 return true;
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68 end
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69 local forwarded = stanza:find("{urn:xmpp:carbons:2}received/{urn:xmpp:forward:0}/{jabber:client}message");
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70 if forwarded then
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71 stanza = forwarded;
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72 end
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73 if stanza:get_child("body") then
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74 return true;
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75 end
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76 if stanza:get_child("subject") then
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77 return true;
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78 end
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79 if stanza:get_child("encryption", "urn:xmpp:eme:0") then
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80 return true;
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81 end
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82 return false;
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83 end
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84 return true;
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85 end, -1);
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86
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87 module:hook("csi-client-inactive", function (event)
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88 local session = event.origin;
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89 if session.pump then
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90 session.pump:pause();
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91 else
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92 local bare_jid = jid.join(session.username, session.host);
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93 local send = session.send;
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94 session._orig_send = send;
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95 local pump = new_pump(session.send, queue_size);
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96 pump:pause();
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97 session.pump = pump;
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98 function session.send(stanza)
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99 if session.state == "active" or module:fire_event("csi-is-stanza-important", { stanza = stanza, session = session }) then
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100 pump:flush();
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101 send(stanza);
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102 else
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103 if st.is_stanza(stanza) and stanza.attr.xmlns == nil and stanza.name ~= "iq" then
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104 stanza = st.clone(stanza);
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105 stanza:add_direct_child(st.stanza("delay", {xmlns = "urn:xmpp:delay", from = bare_jid, stamp = dt.datetime()}));
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106 end
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107 pump:push(stanza);
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108 end
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109 return true;
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110 end
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111 end
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112 end);
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113
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114 module:hook("csi-client-active", function (event)
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115 local session = event.origin;
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116 if session.pump then
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117 session.pump:resume();
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
118 end
aeb054ee88c5 mod_csi_simple: Import modified version of mod_csi_pump from prosody-modules
Kim Alvefur <zash@zash.se>
parents:
diff changeset
119 end);
aeb054ee88c5 mod_csi_simple: Import modified version of mod_csi_pump from prosody-modules
Kim Alvefur <zash@zash.se>
parents:
diff changeset
120