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annotate mod_admin_probe/mod_admin_probe.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 f78661861e98
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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f78661861e98 mod_admin_probe: Module allowing server administrators to probe any user
Florian Zeitz <florob@babelmonkeys.de>
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1 -- Prosody IM
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2 -- Copyright (C) 2014 Florian Zeitz
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3 --
f78661861e98 mod_admin_probe: Module allowing server administrators to probe any user
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4 -- This project is MIT/X11 licensed. Please see the
f78661861e98 mod_admin_probe: Module allowing server administrators to probe any user
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5 -- COPYING file in the source package for more information.
f78661861e98 mod_admin_probe: Module allowing server administrators to probe any user
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6 --
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7
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8 local presence = module:depends("presence");
f78661861e98 mod_admin_probe: Module allowing server administrators to probe any user
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9 local send_presence_of_available_resources = presence.send_presence_of_available_resources;
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10
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11 local hosts = prosody.hosts;
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12 local core_post_stanza = prosody.core_post_stanza;
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13
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14 local st = require "util.stanza";
f78661861e98 mod_admin_probe: Module allowing server administrators to probe any user
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15 local is_admin = require "core.usermanager".is_admin;
f78661861e98 mod_admin_probe: Module allowing server administrators to probe any user
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16 local jid_split = require "util.jid".split;
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17
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18 module:hook("presence/bare", function(data)
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19 local origin, stanza = data.origin, data.stanza;
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20 local to, from, type = stanza.attr.to, stanza.attr.from, stanza.attr.type;
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21 local node, host = jid_split(to);
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22
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23 if type ~= "probe" then return; end
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24 if not is_admin(from, module.host) then return; end
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25
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26 if 0 == send_presence_of_available_resources(node, host, from, origin) then
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27 core_post_stanza(hosts[host], st.presence({from=to, to=from, type="unavailable"}), true);
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28 end
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29 return true;
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30 end, 10);