-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
---
+--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
local usermanager_create_user = require "core.usermanager".create_user;
local usermanager_set_password = require "core.usermanager".set_password;
local usermanager_delete_user = require "core.usermanager".delete_user;
-local os_time = os.time;
local nodeprep = require "util.encodings".stringprep.nodeprep;
local jid_bare = require "util.jid".bare;
+local create_throttle = require "util.throttle".create;
+local new_cache = require "util.cache".new;
local compat = module:get_option_boolean("registration_compat", true);
local allow_registration = module:get_option_boolean("allow_registration", false);
local register_stream_feature = st.stanza("register", {xmlns="http://jabber.org/features/iq-register"}):up();
module:hook("stream-features", function(event)
- local session, features = event.origin, event.features;
+ local session, features = event.origin, event.features;
-- Advertise registration to unauthorized clients only.
if not(allow_registration) or session.type ~= "c2s_unauthed" then
local function handle_registration_stanza(event)
local session, stanza = event.origin, event.stanza;
+ local log = session.log or module._log;
local query = stanza.tags[1];
if stanza.attr.type == "get" then
if query.tags[1] and query.tags[1].name == "remove" then
local username, host = session.username, session.host;
+ -- This one weird trick sends a reply to this stanza before the user is deleted
local old_session_close = session.close;
session.close = function(session, ...)
session.send(st.reply(stanza));
return old_session_close(session, ...);
end
-
+
local ok, err = usermanager_delete_user(username, host);
-
+
if not ok then
- module:log("debug", "Removing user account %s@%s failed: %s", username, host, err);
+ log("debug", "Removing user account %s@%s failed: %s", username, host, err);
session.close = old_session_close;
session.send(st.error_reply(stanza, "cancel", "service-unavailable", err));
return true;
end
-
- module:log("info", "User removed their account: %s@%s", username, host);
+
+ log("info", "User removed their account: %s@%s", username, host);
module:fire_event("user-deregistered", { username = username, host = host, source = "mod_register", session = session });
else
local username = nodeprep(query:get_child_text("username"));
end
end
-local recent_ips = {};
-local min_seconds_between_registrations = module:get_option("min_seconds_between_registrations");
-local whitelist_only = module:get_option("whitelist_registration_only");
-local whitelisted_ips = module:get_option("registration_whitelist") or { "127.0.0.1" };
-local blacklisted_ips = module:get_option("registration_blacklist") or {};
+local min_seconds_between_registrations = module:get_option_number("min_seconds_between_registrations");
+local whitelist_only = module:get_option_boolean("whitelist_registration_only");
+local whitelisted_ips = module:get_option_set("registration_whitelist", { "127.0.0.1" })._items;
+local blacklisted_ips = module:get_option_set("registration_blacklist", {})._items;
+
+local throttle_max = module:get_option_number("registration_throttle_max", min_seconds_between_registrations and 1);
+local throttle_period = module:get_option_number("registration_throttle_period", min_seconds_between_registrations);
+local throttle_cache_size = module:get_option_number("registration_throttle_cache_size", 100);
+local blacklist_overflow = module:get_option_boolean("blacklist_on_registration_throttle_overload", false);
+
+local throttle_cache = new_cache(throttle_cache_size, blacklist_overflow and function (ip, throttle)
+ if not throttle:peek() then
+ module:log("info", "Adding ip %s to registration blacklist", ip);
+ blacklisted_ips[ip] = true;
+ end
+end or nil);
-for _, ip in ipairs(whitelisted_ips) do whitelisted_ips[ip] = true; end
-for _, ip in ipairs(blacklisted_ips) do blacklisted_ips[ip] = true; end
+local function check_throttle(ip)
+ if not throttle_max then return true end
+ local throttle = throttle_cache:get(ip);
+ if not throttle then
+ throttle = create_throttle(throttle_max, throttle_period);
+ end
+ throttle_cache:set(ip, throttle);
+ return throttle:poll(1);
+end
module:hook("stanza/iq/jabber:iq:register:query", function(event)
local session, stanza = event.origin, event.stanza;
+ local log = session.log or module._log;
if not(allow_registration) or session.type ~= "c2s_unauthed" then
session.send(st.error_reply(stanza, "cancel", "service-unavailable"));
else
-- Check that the user is not blacklisted or registering too often
if not session.ip then
- module:log("debug", "User's IP not known; can't apply blacklist/whitelist");
+ log("debug", "User's IP not known; can't apply blacklist/whitelist");
elseif blacklisted_ips[session.ip] or (whitelist_only and not whitelisted_ips[session.ip]) then
session.send(st.error_reply(stanza, "cancel", "not-acceptable", "You are not allowed to register an account."));
return true;
elseif min_seconds_between_registrations and not whitelisted_ips[session.ip] then
- if not recent_ips[session.ip] then
- recent_ips[session.ip] = { time = os_time(), count = 1 };
- else
- local ip = recent_ips[session.ip];
- ip.count = ip.count + 1;
-
- if os_time() - ip.time < min_seconds_between_registrations then
- ip.time = os_time();
- session.send(st.error_reply(stanza, "wait", "not-acceptable"));
- return true;
- end
- ip.time = os_time();
+ if check_throttle(session.ip) then
+ session.send(st.error_reply(stanza, "wait", "not-acceptable"));
+ return true;
end
end
local username, password = nodeprep(data.username), data.password;
return true;
end
session.send(st.reply(stanza)); -- user created!
- module:log("info", "User account created: %s@%s", username, host);
+ log("info", "User account created: %s@%s", username, host);
module:fire_event("user-registered", {
username = username, host = host, source = "mod_register",
session = session });
projects / prosody.git / blobdiff