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annotate mod_c2s_conn_throttle/mod_c2s_conn_throttle.lua @ 5608:1893ae742f66

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mod_http_oauth2: Show errors on device flow user code entry page If the user enters the code incorrectly, having to click back to try again is no fun. Instead, show the error and the code entry form again.
author Kim Alvefur <zash@zash.se>
date Wed, 19 Jul 2023 13:05:47 +0200
parents 7dbde05b48a9
children e79f9dec35c0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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15763c1d085c mod_c2s_conn_throttle: renamed mod_c2s_auth_throttle, hooks at features and takes in account stream renegotiation.
Marco Cirillo <maranda@lightwitch.org>
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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)