view mod_block_registrations/mod_block_registrations.lua @ 5678:0cffeff2cd1d

mod_rest: Limit payload size (cf stanza size limits) Otherwise the limit would be defined by the HTTP stack.
author Kim Alvefur <zash@zash.se>
date Wed, 25 Oct 2023 15:36:20 +0200
parents 368bf9b06484
children
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line source

local st = require "util.stanza";
local nodeprep = require "util.encodings".stringprep.nodeprep;

local block_users = module:get_option_set("block_registrations_users", {
	"abuse", "admin", "administrator", "hostmaster", "info", "news",
	"noc", "operator", "owner", "postmaster", "register", "registration",
	"root", "security", "service", "signup", "support", "sysadmin",
	"sysop", "system", "test", "trouble", "webmaster", "www", "xmpp",
});
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);