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annotate mod_muc_ping/mod_muc_ping.lua @ 4651:8231774f5bfd

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mod_cloud_notify_encrypted: Ensure body substring remains valid UTF-8 The `body:sub()` call risks splitting the string in the middle of a multi-byte UTF-8 sequence. This should have been caught by util.stanza validation, but that would have caused some havoc, at the very least causing the notification to not be sent. There have been no reports of this happening. Likely because this module isn't widely deployed among users with languages that use many longer UTF-8 sequences. The util.encodings.utf8.valid() function is O(n) where only the last sequence really needs to be checked, but it's in C and expected to be fast.
author Kim Alvefur <zash@zash.se>
date Sun, 22 Aug 2021 13:22:59 +0200
parents a0ca5d0a49ba
children
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3349
35dc7c38e362 mod_muc_ping: Implements the Server Optimization part of XEP-0410: MUC Self-Ping
Kim Alvefur <zash@zash.se>
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1 local st = require "util.stanza";
35dc7c38e362 mod_muc_ping: Implements the Server Optimization part of XEP-0410: MUC Self-Ping
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2 local jid_bare = import("util.jid", "bare");
35dc7c38e362 mod_muc_ping: Implements the Server Optimization part of XEP-0410: MUC Self-Ping
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3
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4 local mod_muc = module:depends"muc";
35dc7c38e362 mod_muc_ping: Implements the Server Optimization part of XEP-0410: MUC Self-Ping
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5 local rooms = rawget(mod_muc, "rooms");
35dc7c38e362 mod_muc_ping: Implements the Server Optimization part of XEP-0410: MUC Self-Ping
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6 if not rooms then
35dc7c38e362 mod_muc_ping: Implements the Server Optimization part of XEP-0410: MUC Self-Ping
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7 module:log("warn", "mod_%s is compatible with Prosody up to 0.10.x", module.name);
35dc7c38e362 mod_muc_ping: Implements the Server Optimization part of XEP-0410: MUC Self-Ping
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8 return;
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9 end
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10
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11 module:hook("iq/full", function (event)
35dc7c38e362 mod_muc_ping: Implements the Server Optimization part of XEP-0410: MUC Self-Ping
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12 local origin, stanza = event.origin, event.stanza;
35dc7c38e362 mod_muc_ping: Implements the Server Optimization part of XEP-0410: MUC Self-Ping
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13 if stanza.attr.type ~= "get" or not stanza:get_child("ping", "urn:xmpp:ping") then
35dc7c38e362 mod_muc_ping: Implements the Server Optimization part of XEP-0410: MUC Self-Ping
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14 return;
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15 end
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16
35dc7c38e362 mod_muc_ping: Implements the Server Optimization part of XEP-0410: MUC Self-Ping
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17 local from = stanza.attr.from;
35dc7c38e362 mod_muc_ping: Implements the Server Optimization part of XEP-0410: MUC Self-Ping
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18 local room_nick = stanza.attr.to;
35dc7c38e362 mod_muc_ping: Implements the Server Optimization part of XEP-0410: MUC Self-Ping
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19 local room_jid = jid_bare(room_nick);
35dc7c38e362 mod_muc_ping: Implements the Server Optimization part of XEP-0410: MUC Self-Ping
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20
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21 local room = rooms[room_jid];
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22 if not room then return; end
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23
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24 if room._jid_nick[from] == room_nick then
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25 origin.send(st.reply(stanza));
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26 return true;
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27 end
35dc7c38e362 mod_muc_ping: Implements the Server Optimization part of XEP-0410: MUC Self-Ping
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28 end);
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29
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30 module:hook("muc-disco#info", function(event)
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31 event.reply:tag("feature", {var="urn:xmpp:ping"}):up();
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a0ca5d0a49ba mod_muc_ping: Advertise XEP-0410 feature
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parents: 3349
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32 event.reply:tag("feature", {var = "http://jabber.org/protocol/muc#self-ping-optimization"}):up();
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35dc7c38e362 mod_muc_ping: Implements the Server Optimization part of XEP-0410: MUC Self-Ping
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33 end);