File

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