author | Kim Alvefur <zash@zash.se> |
Tue, 01 Sep 2015 12:22:29 +0200 | |
changeset 1819 | abacf6698d97 |
parent 1583 | c1bb2a64aabb |
child 1593 | 3e4d15ae2133 |
child 1858 | 450ada5bb1b5 |
permissions | -rw-r--r-- |
1583
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
1 |
-- mod_limit_auth |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
2 |
|
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
3 |
local st = require"util.stanza"; |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
4 |
local new_throttle = require "util.throttle".create; |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
5 |
|
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
6 |
local period = math.max(module:get_option_number(module.name.."_period", 30), 0); |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
7 |
local max = math.max(module:get_option_number(module.name.."_max", 5), 1); |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
8 |
|
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
9 |
local tarpit_delay = module:get_option_number(module.name.."_tarpit_delay", nil); |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
10 |
if tarpit_delay then |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
11 |
local waiter = require "util.async".waiter; |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
12 |
local delay = tarpit_delay; |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
13 |
function tarpit_delay() |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
14 |
local wait, done = waiter(); |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
15 |
module:add_timer(delay, done); |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
16 |
wait(); |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
17 |
end |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
18 |
else |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
19 |
function tarpit_delay() end |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
20 |
end |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
21 |
|
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
22 |
local throttles = module:shared"throttles"; |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
23 |
|
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
24 |
local reply = st.stanza("failure", { xmlns = "urn:ietf:params:xml:ns:xmpp-sasl" }):tag("temporary-auth-failure"); |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
25 |
|
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
26 |
local function get_throttle(ip) |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
27 |
local throttle = throttles[ip]; |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
28 |
if not throttle then |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
29 |
throttle = new_throttle(max, period); |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
30 |
throttles[ip] = throttle; |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
31 |
end |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
32 |
return throttle; |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
33 |
end |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
34 |
|
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
35 |
module:hook("stanza/urn:ietf:params:xml:ns:xmpp-sasl:auth", function (event) |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
36 |
local origin = event.origin; |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
37 |
if not get_throttle(origin.ip):peek(1) then |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
38 |
origin.log("warn", "Too many authentication attepmts for ip %s", origin.ip); |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
39 |
tarpit_delay(); |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
40 |
origin.send(reply); |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
41 |
return true; |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
42 |
end |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
43 |
end, 10); |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
44 |
|
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
45 |
module:hook("authentication-failure", function (event) |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
46 |
get_throttle(event.session.ip):poll(1); |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
47 |
end); |
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
48 |
|
c1bb2a64aabb
mod_limit_auth: Throttle authentication (failed) attempts with optional (0.10+) tarpit
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
49 |
-- TODO remove old throttles after some time |