prosody-modules
0f5f2d4475b9
mod_c2s_conn_throttle/mod_c2s_conn_throttle.lua

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mod_c2s_conn_throttle/mod_c2s_conn_throttle.lua @ 4876:0f5f2d4475b9

mod_http_xep227: Add support for import via APIs rather than direct store manipulation In particular this transitions PEP nodes and data to be imported via mod_pep's APIs, fixing issues with importing at runtime while PEP data may already be live in RAM. Next obvious candidate for this approach is rosters, so clients get immediate roster pushes and other special handling (such as emitting subscribes to reach the desired subscription state).
author Matthew Wild <mwild1@gmail.com>
date Tue, 18 Jan 2022 17:01:18 +0000
parent 1343:7dbde05b48a9
child 5810:e79f9dec35c0
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1 -- Clients Connection Throttler.
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2 -- (C) 2012-2013, Marco Cirillo (LW.Org)
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4 local time = os.time
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5 local in_count = {}
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6 local logins_count = module:get_option_number("cthrottler_logins_count", 3)
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7 local throttle_time = module:get_option_number("cthrottler_time", 60)
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9 local function handle_sessions(event)
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10 local session = event.origin
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12 if not in_count[session.ip] and session.type == "c2s_unauthed" then
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13 in_count[session.ip] = { t = time(), c = 1 }
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14 elseif in_count[session.ip] and session.type == "c2s_unauthed" then
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15 if in_count[session.ip].starttls_c then in_count[session.ip].c = in_count[session.ip].starttls_c else in_count[session.ip].c = in_count[session.ip].c + 1 end
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17 if in_count[session.ip].c > logins_count and time() - in_count[session.ip].t < throttle_time then
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18 module:log("error", "Exceeded login count for %s, closing connection", session.ip)
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19 session:close{ condition = "policy-violation", text = "You exceeded the number of connections/logins allowed in "..throttle_time.." seconds, good bye." }
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20 return true
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21 elseif time() - in_count[session.ip].t > throttle_time then
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22 in_count[session.ip] = nil ; return
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23 end
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24 end
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25 end
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27 local function check_starttls(event)
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28 local session = event.origin
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30 if in_count[session.ip] and type(in_count[session.ip].starttls_c) ~= "number" and session.type == "c2s_unauthed" then
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31 in_count[session.ip].starttls_c = 1
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32 elseif in_count[session.ip] and type(in_count[session.ip].starttls_c) == "number" and session.type == "c2s_unauthed" then
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33 in_count[session.ip].starttls_c = in_count[session.ip].starttls_c + 1
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34 end
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35 end
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37 module:hook("stream-features", handle_sessions, 100)
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38 module:hook("stanza/urn:ietf:params:xml:ns:xmpp-tls:starttls", check_starttls, 100)