prosody-modules
cb9517827d76
mod_warn_legacy_tls/mod_warn_legacy_tls.lua

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mod_warn_legacy_tls/mod_warn_legacy_tls.lua @ 3751:cb9517827d76

mod_http_index/README: Split out advanced settings into its own section
author Kim Alvefur <zash@zash.se>
date Sun, 17 Nov 2019 16:32:59 +0100
parent 3731:406b32b50457
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37cef218ba20 mod_sslv3_warn: Module to notice users connected with SSLv3 that they need to upgrade becasue SSLv3 is insecure
Kim Alvefur <zash@zash.se>
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1 local st = require"util.stanza";
37cef218ba20 mod_sslv3_warn: Module to notice users connected with SSLv3 that they need to upgrade becasue SSLv3 is insecure
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2 local host = module.host;
37cef218ba20 mod_sslv3_warn: Module to notice users connected with SSLv3 that they need to upgrade becasue SSLv3 is insecure
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3
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36023eb3254e mod_warn_legacy_tls: Adapt to warn about TLS < 1.2
Kim Alvefur <zash@zash.se>
parents: 3726
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4 local deprecated_protocols = module:get_option_set("legacy_tls_versions", { "SSLv3", "TLSv1", "TLSv1.1" });
36023eb3254e mod_warn_legacy_tls: Adapt to warn about TLS < 1.2
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5 local warning_message = module:get_option_string("legacy_tls_warning", "Your connection is encrypted using the %s protocol, which has known problems and will be disabled soon. Please upgrade your client.");
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37cef218ba20 mod_sslv3_warn: Module to notice users connected with SSLv3 that they need to upgrade becasue SSLv3 is insecure
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37cef218ba20 mod_sslv3_warn: Module to notice users connected with SSLv3 that they need to upgrade becasue SSLv3 is insecure
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7 module:hook("resource-bind", function (event)
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8 local session = event.session;
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9 module:log("debug", "mod_%s sees that %s logged in", module.name, session.username);
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10
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11 local ok, protocol = pcall(function(session)
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12 return session.conn:socket():info"protocol";
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13 end, session);
37cef218ba20 mod_sslv3_warn: Module to notice users connected with SSLv3 that they need to upgrade becasue SSLv3 is insecure
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14 if not ok then
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36023eb3254e mod_warn_legacy_tls: Adapt to warn about TLS < 1.2
Kim Alvefur <zash@zash.se>
parents: 3726
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15 module:log("debug", "Could not determine TLS version: %s", protocol);
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parents: 3726
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16 elseif deprecated_protocols:contains(protocol) then
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ec3eb426271e mod_warn_legacy_tls: Log a warning attached to sessions using deprecated TLS versions
Kim Alvefur <zash@zash.se>
parents: 3727
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17 session.log("warn", "Uses %s", protocol);
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Kim Alvefur <zash@zash.se>
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18 module:add_timer(15, function ()
37cef218ba20 mod_sslv3_warn: Module to notice users connected with SSLv3 that they need to upgrade becasue SSLv3 is insecure
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19 if session.type == "c2s" and session.resource then
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20 session.send(st.message({ from = host, type = "headline", to = session.full_jid }, warning_message:format(protocol)));
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21 end
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22 end);
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406b32b50457 mod_warn_legacy_tls: Log debug message for acceptable TLS versions
Kim Alvefur <zash@zash.se>
parents: 3730
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23 else
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24 module:log("debug", "Using acceptable TLS version: %s", protocol);
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25 end
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26 end);