prosody
8e4033213c62
plugins/mod_s2s_auth_certs.lua

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plugins/mod_s2s_auth_certs.lua @ 12532:8e4033213c62

luacheck: Ignore new warning about using variables prefixed with '_' luacheck 0.26 considers the _ prefix as a hint that the variable or argument is unused, then warns if they are used despite this. We have several places where this prefix is used to avoid shadowing another similarly named variable, resulting in many instances of this warning.
author Kim Alvefur <zash@zash.se>
date Mon, 30 May 2022 16:49:52 +0200
parent 12480:7e9ebdc75ce4
child 12808:12bd40b8e105
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 module:set_global();
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2
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3 local cert_verify_identity = require "util.x509".verify_identity;
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4 local NULL = {};
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5 local log = module._log;
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6
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7 local measure_cert_statuses = module:metric("counter", "checked", "", "Certificate validation results",
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8 { "chain"; "identity" })
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9
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10 module:hook("s2s-check-certificate", function(event)
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11 local session, host, cert = event.session, event.host, event.cert;
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12 local conn = session.conn;
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13 local log = session.log or log;
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14
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15 if not cert then
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16 log("warn", "No certificate provided by %s", host or "unknown host");
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17 return;
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18 end
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20 local chain_valid, errors;
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21 if conn.ssl_peerverification then
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22 chain_valid, errors = conn:ssl_peerverification();
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23 else
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24 chain_valid, errors = false, { { "Chain verification not supported by this version of LuaSec" } };
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25 end
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26 -- Is there any interest in printing out all/the number of errors here?
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27 if not chain_valid then
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28 log("debug", "certificate chain validation result: invalid");
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29 for depth, t in pairs(errors or NULL) do
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30 log("debug", "certificate error(s) at depth %d: %s", depth-1, table.concat(t, ", "))
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31 end
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32 session.cert_chain_status = "invalid";
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33 session.cert_chain_errors = errors;
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34 else
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35 log("debug", "certificate chain validation result: valid");
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36 session.cert_chain_status = "valid";
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37
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38 -- We'll go ahead and verify the asserted identity if the
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39 -- connecting server specified one.
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40 if host then
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41 if cert_verify_identity(host, "xmpp-server", cert) then
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42 session.cert_identity_status = "valid"
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43 else
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44 session.cert_identity_status = "invalid"
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45 end
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46 log("debug", "certificate identity validation result: %s", session.cert_identity_status);
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47 end
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48 end
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49 measure_cert_statuses:with_labels(session.cert_chain_status or "unknown", session.cert_identity_status or "unknown"):add(1);
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50 end, 509);
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51