prosody
cfeb0077c9e9
plugins/muc/persistent.lib.lua

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plugins/muc/persistent.lib.lua @ 10571:cfeb0077c9e9

net.server_epoll: Avoid concatenating buffer with single item Saves creating a string that'll be identical to buffer[1] anyways, as well as a C function call. Depending on Lua version and length of the string, this could be reusing an interned string, but a longer one would probably be duplicated for no reason. Having exactly one item in the buffer seems like it would be fairly common, but I have not done an extensive study. If opportunistic writes are enabled then it will be even more likely. This special case could be optimized like this in table.concat but it does not look like it is.
author Kim Alvefur <zash@zash.se>
date Sat, 28 Dec 2019 06:18:58 +0100
parent 9053:ea9e1f8f3013
child 12642:9061f9621330
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 -- Copyright (C) 2014 Daurnimator
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5 --
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6 -- This project is MIT/X11 licensed. Please see the
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7 -- COPYING file in the source package for more information.
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8 --
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9
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10 local restrict_persistent = not module:get_option_boolean("muc_room_allow_persistent", true);
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11 local um_is_admin = require "core.usermanager".is_admin;
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12
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13 local function get_persistent(room)
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14 return room._data.persistent;
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15 end
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16
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17 local function set_persistent(room, persistent)
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18 persistent = persistent and true or nil;
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19 if get_persistent(room) == persistent then return false; end
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20 room._data.persistent = persistent;
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21 return true;
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22 end
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23
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24 module:hook("muc-config-form", function(event)
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25 if restrict_persistent and not um_is_admin(event.actor, module.host) then
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26 -- Don't show option if hidden rooms are restricted and user is not admin of this host
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27 return;
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28 end
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29 table.insert(event.form, {
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30 name = "muc#roomconfig_persistentroom";
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31 type = "boolean";
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32 label = "Persistent (room should remain even when it is empty)";
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33 desc = "Rooms are automatically deleted when they are empty, unless this option is enabled";
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34 value = get_persistent(event.room);
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35 });
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36 end, 100-5);
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37
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38 module:hook("muc-config-submitted/muc#roomconfig_persistentroom", function(event)
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39 if restrict_persistent and not um_is_admin(event.actor, module.host) then
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40 return; -- Not allowed
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41 end
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42 if set_persistent(event.room, event.value) then
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43 event.status_codes["104"] = true;
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44 end
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45 end);
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46
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47 module:hook("muc-disco#info", function(event)
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48 event.reply:tag("feature", {var = get_persistent(event.room) and "muc_persistent" or "muc_temporary"}):up();
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49 end);
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50
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51 module:hook("muc-room-destroyed", function(event)
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52 set_persistent(event.room, false);
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53 end, -100);
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54
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55 return {
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56 get = get_persistent;
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57 set = set_persistent;
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58 };