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annotate mod_block_registrations/mod_block_registrations.lua @ 5648:c217f4edfc4f

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misc/mtail: Start of an mtail config Stashing it here in case anyone wants to continue working on it. Currently it's only counting log messages by level. Due to the permissions set by systemd on Prosody logs, mtail never managed to start correctly until permissions were manually relaxed.
author Kim Alvefur <zash@zash.se>
date Sun, 17 Sep 2023 13:36:30 +0200
parents 368bf9b06484
children
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cabbcc1997d9 mod_block_registrations: Allow restricting registrations of certain user accounts, and/or ensure that registered accounts conform to a given pattern
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1 local st = require "util.stanza";
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2 local nodeprep = require "util.encodings".stringprep.nodeprep;
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3
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4 local block_users = module:get_option_set("block_registrations_users", {
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5 "abuse", "admin", "administrator", "hostmaster", "info", "news",
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6 "noc", "operator", "owner", "postmaster", "register", "registration",
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7 "root", "security", "service", "signup", "support", "sysadmin",
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8 "sysop", "system", "test", "trouble", "webmaster", "www", "xmpp",
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9 });
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10 local block_patterns = module:get_option_set("block_registrations_matching", {});
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11 local require_pattern = module:get_option_string("block_registrations_require");
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12
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13 function is_blocked(username)
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14 -- Check if the username is simply blocked
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15 if block_users:contains(username) then return true; end
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17 for pattern in block_patterns do
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18 if username:find(pattern) then
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19 return true;
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20 end
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21 end
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22 -- Not blocked, but check that username matches allowed pattern
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23 if require_pattern and not username:match(require_pattern) then
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24 return true;
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25 end
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26 end
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27
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28 module:hook("user-registering", function(event)
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29 local username = event.username;
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30 if is_blocked(username) then
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31 event.allowed = false;
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32 return true;
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33 end
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34 end, 10);