local st = require "util.stanza";
local nodeprep = require "util.encodings".stringprep.nodeprep;
local block_users = module:get_option_set("block_registrations_users", { "admin" });
local block_patterns = module:get_option_set("block_registrations_matching", {});
local require_pattern = module:get_option_string("block_registrations_require");
function is_blocked(username)
-- Check if the username is simply blocked
if block_users:contains(username) then return true; end
for pattern in block_patterns do
if username:find(pattern) then
return true;
end
end
-- Not blocked, but check that username matches allowed pattern
if require_pattern and not username:match(require_pattern) then
return true;
end
end
module:hook("user-registering", function(event)
local username = event.username;
if is_blocked(username) then
event.allowed = false;
return true;
end
end, 10);