prosody-modules
06fbbd45ba75
mod_limit_auth/mod_limit_auth.lua

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mod_limit_auth/mod_limit_auth.lua @ 6302:06fbbd45ba75

mod_cloud_notify: Readme: fix links and labels that were removed in the last commit diff --git a/mod_cloud_notify/README.md b/mod_cloud_notify/README.md --- a/mod_cloud_notify/README.md +++ b/mod_cloud_notify/README.md @@ -1,3 +1,9 @@ +---- +-labels: +-- 'Stage-Beta' +-summary: 'XEP-0357: Cloud push notifications' +---- + # Introduction This module enables support for sending "push notifications" to clients @@ -32,15 +38,15 @@ notification to your device. When your d it will display it or wake up the app so it can connect to XMPP and receive any pending messages. -This protocol is described for developers in \[XEP-0357: Push -Notifications\]. +This protocol is described for developers in [XEP-0357: Push +Notifications]. -For this module to work reliably, you must have \[mod_smacks\], -\[mod_mam\] and \[mod_carbons\] also enabled on your server. +For this module to work reliably, you must have [mod_smacks], +[mod_mam] and [mod_carbons] also enabled on your server. Some clients, notably Siskin and Snikket iOS need some additional extensions that are not currently defined in a standard XEP. To support -these clients, see \[mod_cloud_notify_extensions\]. +these clients, see [mod_cloud_notify_extensions]. # Configuration @@ -58,18 +64,18 @@ these clients, see \[mod_cloud_notify_ex # Internal design notes App servers are notified about offline messages, messages stored by -\[mod_mam\] or messages waiting in the smacks queue. The business rules +[mod_mam] or messages waiting in the smacks queue. The business rules outlined [here](//mail.jabber.org/pipermail/standards/2016-February/030925.html) are all honored[^2]. -To cooperate with \[mod_smacks\] this module consumes some events: +To cooperate with [mod_smacks] this module consumes some events: `smacks-ack-delayed`, `smacks-hibernation-start` and `smacks-hibernation-end`. These events allow this module to send out notifications for messages received while the session is hibernated by -\[mod_smacks\] or even when smacks acknowledgements for messages are +[mod_smacks] or even when smacks acknowledgements for messages are delayed by a certain amount of seconds configurable with the -\[mod_smacks\] setting `smacks_max_ack_delay`. +[mod_smacks] setting `smacks_max_ack_delay`. The `smacks_max_ack_delay` setting allows to send out notifications to clients which aren't already in smacks hibernation state (because the
author Menel <menel@snikket.de>
date Fri, 13 Jun 2025 10:44:37 +0200
parent 1941:2a5a44d5b935
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1 -- mod_limit_auth
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2
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3 local st = require"util.stanza";
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4 local new_throttle = require "util.throttle".create;
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5
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6 local period = math.max(module:get_option_number(module.name.."_period", 30), 0);
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7 local max = math.max(module:get_option_number(module.name.."_max", 5), 1);
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8
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9 local tarpit_delay = module:get_option_number(module.name.."_tarpit_delay", nil);
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10 if tarpit_delay then
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11 local waiter = require "util.async".waiter;
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12 local delay = tarpit_delay;
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13 function tarpit_delay()
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14 local wait, done = waiter();
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15 module:add_timer(delay, done);
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16 wait();
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17 end
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18 else
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19 function tarpit_delay() end
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20 end
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21
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22 local throttles = module:shared"throttles";
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23
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24 local reply = st.stanza("failure", { xmlns = "urn:ietf:params:xml:ns:xmpp-sasl" }):tag("temporary-auth-failure");
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25
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26 local function get_throttle(ip)
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27 local throttle = throttles[ip];
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28 if not throttle then
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29 throttle = new_throttle(max, period);
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30 throttles[ip] = throttle;
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31 end
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32 return throttle;
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33 end
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34
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35 module:hook("stanza/urn:ietf:params:xml:ns:xmpp-sasl:auth", function (event)
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36 local origin = event.origin;
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37 if origin.type ~= "c2s_unauthed" then return end
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38 if not get_throttle(origin.ip):peek(1) then
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39 origin.log("warn", "Too many authentication attepmts for ip %s", origin.ip);
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40 tarpit_delay();
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41 origin.send(reply);
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42 return true;
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43 end
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44 end, 10);
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46 module:hook("authentication-failure", function (event)
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47 get_throttle(event.session.ip):poll(1);
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48 end);
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49
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50 module:add_timer(14400, function (now)
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51 local old = now - 86400;
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52 for ip, throttle in pairs(throttles) do
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53 if throttle.t < old then
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54 throttles[ip] = nil;
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55 end
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56 end
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57 end);
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58