prosody
e732f9dfdfc8
plugins/mod_s2s_auth_certs.lua

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plugins/mod_s2s_auth_certs.lua @ 13055:e732f9dfdfc8

mod_mam: port to use util.human.io.parse_duration Updated by Zash, the original patch by Jonas had put the duration parsing function in util.datetime but MattJ later did the same thing but differently in f4d7fe919969
author Jonas Schäfer <jonas@wielicki.name>
date Thu, 28 Apr 2022 20:38:40 +0200
parent 12977:74b9e05af71e
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rev   line source
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92d009af6eba mod_s2s_auth_certs: Split PKIX based certificate checking from mod_s2s into new plugin
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1 module:set_global();
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2
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3 local cert_verify_identity = require "prosody.util.x509".verify_identity;
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4 local NULL = {};
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5 local log = module._log;
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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 local secure_hostname = conn.extra and conn.extra.secure_hostname;
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16
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17 if not cert then
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18 log("warn", "No certificate provided by %s", host or "unknown host");
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19 return;
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20 end
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21
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22 local chain_valid, errors;
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23 if conn.ssl_peerverification then
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24 chain_valid, errors = conn:ssl_peerverification();
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25 else
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26 chain_valid, errors = false, { { "Chain verification not supported by this version of LuaSec" } };
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27 end
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28 -- Is there any interest in printing out all/the number of errors here?
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29 if not chain_valid then
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30 log("debug", "certificate chain validation result: invalid");
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31 for depth, t in pairs(errors or NULL) do
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32 log("debug", "certificate error(s) at depth %d: %s", depth-1, table.concat(t, ", "))
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33 end
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34 session.cert_chain_status = "invalid";
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35 session.cert_chain_errors = errors;
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36 else
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37 log("debug", "certificate chain validation result: valid");
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38 session.cert_chain_status = "valid";
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39
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40 -- We'll go ahead and verify the asserted identity if the
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41 -- connecting server specified one.
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42 if host then
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43 if cert_verify_identity(host, "xmpp-server", cert) then
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44 session.cert_identity_status = "valid"
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45 else
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46 session.cert_identity_status = "invalid"
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47 end
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48 log("debug", "certificate identity validation result: %s", session.cert_identity_status);
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49 end
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50
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51 -- Check for DNSSEC-signed SRV hostname
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52 if secure_hostname and session.cert_identity_status ~= "valid" then
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53 if cert_verify_identity(secure_hostname, "xmpp-server", cert) then
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54 module:log("info", "Secure SRV name delegation %q -> %q", secure_hostname, host);
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55 session.cert_identity_status = "valid"
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56 end
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57 end
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58 end
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59 measure_cert_statuses:with_labels(session.cert_chain_status or "unknown", session.cert_identity_status or "unknown"):add(1);
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60 end, 509);
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61