prosody
4585fe53e21f
plugins/mod_csi_simple.lua

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plugins/mod_csi_simple.lua @ 10794:4585fe53e21f

MUC: Enforce strict resourceprep when registering room nicknames If nickname enforcement is enabled this would otherwise let you bypass the join check in muc.lib by registering an invalid nickname and then joining with any nickname, letting register.lib change it to the invalid registered nick.
author Kim Alvefur <zash@zash.se>
date Sat, 02 May 2020 20:12:41 +0200 (2020-05-02)
parent 10772:31e702c5f475
child 10801:2b97aac0ea3c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 -- Copyright (C) 2016-2020 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 local important_payloads = module:get_option_set("csi_important_payloads", { });
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17
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18 module:hook("csi-is-stanza-important", function (event)
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19 local stanza = event.stanza;
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20 if not st.is_stanza(stanza) then
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21 -- whitespace pings etc
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22 return true;
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23 end
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24 if stanza.attr.xmlns ~= nil then
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25 -- stream errors, stream management etc
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26 return true;
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27 end
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28 local st_name = stanza.name;
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29 if not st_name then return false; end
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30 local st_type = stanza.attr.type;
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31 if st_type == "error" then
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32 return true;
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33 end
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34 if st_name == "presence" then
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35 if st_type == nil or st_type == "unavailable" then
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36 return false;
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37 end
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38 return true;
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39 elseif st_name == "message" then
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40 if st_type == "headline" then
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41 return false;
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42 end
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43 if stanza:get_child("sent", "urn:xmpp:carbons:2") then
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44 return true;
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45 end
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46 local forwarded = stanza:find("{urn:xmpp:carbons:2}received/{urn:xmpp:forward:0}/{jabber:client}message");
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47 if forwarded then
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48 stanza = forwarded;
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49 end
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50 if stanza:get_child("body") then
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51 return true;
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52 end
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53 if stanza:get_child("subject") then
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54 return true;
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55 end
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56 if stanza:get_child("encryption", "urn:xmpp:eme:0") then
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57 return true;
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58 end
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59 if stanza:get_child("x", "jabber:x:conference") or stanza:find("{http://jabber.org/protocol/muc#user}x/invite") then
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60 return true;
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61 end
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62 for important in important_payloads do
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63 if stanza:find(important) then
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64 return true;
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65 end
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66 end
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67 return false;
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68 elseif st_name == "iq" then
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69 return true;
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70 end
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71 end, -1);
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72
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73 local function with_timestamp(stanza, from)
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74 if st.is_stanza(stanza) and stanza.attr.xmlns == nil and stanza.name ~= "iq" then
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75 stanza = st.clone(stanza);
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76 stanza:add_direct_child(st.stanza("delay", {xmlns = "urn:xmpp:delay", from = from, stamp = dt.datetime()}));
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77 end
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78 return stanza;
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79 end
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80
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81 local function manage_buffer(stanza, session)
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82 local ctr = session.csi_counter or 0;
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83 if ctr >= queue_size then
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84 session.log("debug", "Queue size limit hit, flushing buffer (queue size is %d)", session.csi_counter);
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85 session.conn:resume_writes();
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86 elseif module:fire_event("csi-is-stanza-important", { stanza = stanza, session = session }) then
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87 session.log("debug", "Important stanza, flushing buffer (queue size is %d)", session.csi_counter);
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88 session.conn:resume_writes();
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89 else
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90 stanza = with_timestamp(stanza, jid.join(session.username, session.host))
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91 end
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92 session.csi_counter = ctr + 1;
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93 return stanza;
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94 end
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95
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96 local function flush_buffer(data, session)
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97 if session.csi_flushing then
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98 return data;
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99 end
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100 session.csi_flushing = true;
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101 session.log("debug", "Client sent something, flushing buffer once (queue size is %d)", session.csi_counter);
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102 session.conn:resume_writes();
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103 return data;
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104 end
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105
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106 function enable_optimizations(session)
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107 if session.conn and session.conn.pause_writes then
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108 session.conn:pause_writes();
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109 filters.add_filter(session, "stanzas/out", manage_buffer);
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110 filters.add_filter(session, "bytes/in", flush_buffer);
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111 else
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112 session.log("warn", "Session connection does not support write pausing");
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113 end
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114 end
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115
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116 function disable_optimizations(session)
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117 session.csi_flushing = nil;
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118 filters.remove_filter(session, "stanzas/out", manage_buffer);
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119 filters.remove_filter(session, "bytes/in", flush_buffer);
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120 if session.conn and session.conn.resume_writes then
9909
3229be01a08a mod_csi_simple: Use write locks in net.server if available
Kim Alvefur <zash@zash.se>
parents: 9771
diff changeset
121 session.conn:resume_writes();
9589
aeb054ee88c5 mod_csi_simple: Import modified version of mod_csi_pump from prosody-modules
Kim Alvefur <zash@zash.se>
parents:
diff changeset
122 end
9918
6e9dcec259d0 mod_csi_simple: Separate out functions to enable/disable optimizations
Kim Alvefur <zash@zash.se>
parents: 9917
diff changeset
123 end
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Kim Alvefur <zash@zash.se>
parents: 9917
diff changeset
124
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diff changeset
125 module:hook("csi-client-inactive", function (event)
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126 local session = event.origin;
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127 enable_optimizations(session);
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Kim Alvefur <zash@zash.se>
parents: 9917
diff changeset
128 end);
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parents: 9917
diff changeset
129
6e9dcec259d0 mod_csi_simple: Separate out functions to enable/disable optimizations
Kim Alvefur <zash@zash.se>
parents: 9917
diff changeset
130 module:hook("csi-client-active", function (event)
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Kim Alvefur <zash@zash.se>
parents: 9917
diff changeset
131 local session = event.origin;
9922
06bf5ccd859f mod_csi_simple: Fix type in function name
Matthew Wild <mwild1@gmail.com>
parents: 9921
diff changeset
132 disable_optimizations(session);
9589
aeb054ee88c5 mod_csi_simple: Import modified version of mod_csi_pump from prosody-modules
Kim Alvefur <zash@zash.se>
parents:
diff changeset
133 end);
aeb054ee88c5 mod_csi_simple: Import modified version of mod_csi_pump from prosody-modules
Kim Alvefur <zash@zash.se>
parents:
diff changeset
134
10025
4498f601516d mod_csi_simple: Disable optimizations on disconnect (fixes #1358)
Kim Alvefur <zash@zash.se>
parents: 9923
diff changeset
135 module:hook("pre-resource-unbind", function (event)
4498f601516d mod_csi_simple: Disable optimizations on disconnect (fixes #1358)
Kim Alvefur <zash@zash.se>
parents: 9923
diff changeset
136 local session = event.session;
4498f601516d mod_csi_simple: Disable optimizations on disconnect (fixes #1358)
Kim Alvefur <zash@zash.se>
parents: 9923
diff changeset
137 disable_optimizations(session);
10414
51ebfdeccad7 mod_csi_simple: Make sure to disable optimizations before mod_smacks (thanks pep.)
Kim Alvefur <zash@zash.se>
parents: 10303
diff changeset
138 end, 1);
9912
601f9781a605 mod_csi_simple: Count buffered items and flush when it reaches configured limit
Kim Alvefur <zash@zash.se>
parents: 9911
diff changeset
139
601f9781a605 mod_csi_simple: Count buffered items and flush when it reaches configured limit
Kim Alvefur <zash@zash.se>
parents: 9911
diff changeset
140 module:hook("c2s-ondrain", function (event)
601f9781a605 mod_csi_simple: Count buffered items and flush when it reaches configured limit
Kim Alvefur <zash@zash.se>
parents: 9911
diff changeset
141 local session = event.session;
10277
45a58127a3e5 mod_csi_simple: Remove duplicated check for connection
Kim Alvefur <zash@zash.se>
parents: 10025
diff changeset
142 if session.state == "inactive" 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
143 session.conn:pause_writes();
e83dfcdeab59 mod_csi_simple: Include queue size in debug messages
Kim Alvefur <zash@zash.se>
parents: 9922
diff changeset
144 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
145 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
146 end
601f9781a605 mod_csi_simple: Count buffered items and flush when it reaches configured limit
Kim Alvefur <zash@zash.se>
parents: 9911
diff changeset
147 end);
9919
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
148
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
149 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
150 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
151 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
152 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
153 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
154 end
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
155 end
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
156 end
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
157 end
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
158
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
159 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
160 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
161 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
162 if session.state == "inactive" then
9922
06bf5ccd859f mod_csi_simple: Fix type in function name
Matthew Wild <mwild1@gmail.com>
parents: 9921
diff changeset
163 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
164 end
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
165 end
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
166 end
d602a495409b mod_csi_simple: Disable optimizations on unload and re-enable on load
Kim Alvefur <zash@zash.se>
parents: 9918
diff changeset
167 end