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annotate mod_block_registrations/mod_block_registrations.lua @ 4537:53ee391ca689

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mod_smacks: Fix traceback due to session being destroyed in send() Sending something can cause the OS to notice that the connection is dead and then the connection can be dead at this point. More likely if opportunistic_writes is enabled.
author Kim Alvefur <zash@zash.se>
date Thu, 01 Apr 2021 11:35:26 +0200
parents 27aa58ed3e2e
children 368bf9b06484
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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
Matthew Wild <mwild1@gmail.com>
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1 local st = require "util.stanza";
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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2 local nodeprep = require "util.encodings".stringprep.nodeprep;
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3
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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4 local block_users = module:get_option_set("block_registrations_users", { "admin" });
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5 local block_patterns = module:get_option_set("block_registrations_matching", {});
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6 local require_pattern = module:get_option_string("block_registrations_require");
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7
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8 function is_blocked(username)
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9 -- Check if the username is simply blocked
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10 if block_users:contains(username) then return true; end
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11
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12 for pattern in block_patterns do
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27aa58ed3e2e mod_block_registrations: string.find is faster than string.match when only needing a boolean answer
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parents: 1331
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13 if username:find(pattern) then
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14 return true;
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15 end
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16 end
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17 -- Not blocked, but check that username matches allowed pattern
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18 if require_pattern and not username:match(require_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
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23 module:hook("user-registering", function(event)
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24 local username = event.username;
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25 if is_blocked(username) then
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26 event.allowed = false;
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27 return true;
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28 end
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29 end, 10);