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annotate mod_block_registrations/mod_block_registrations.lua @ 4362:116c88c28532

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mod_http_admin_api: restructure group-related info in API - Return the members of the group right in the get_group_by_id call. This is an O(1) of extra work. - Remove the groups attribute from get_user_by_name as that is O(n) of work and rarely immediately needed. The replacement for the group membership information in the user is for now to use the group API and iterate; future work may fix that.
author Jonas Schäfer <jonas@wielicki.name>
date Wed, 20 Jan 2021 15:30:29 +0100
parents 27aa58ed3e2e
children 368bf9b06484
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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";
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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", { "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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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);