prosody
8758febbaca2
plugins/mod_s2s_auth_certs.lua

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plugins/mod_s2s_auth_certs.lua @ 9981:8758febbaca2

mod_mimicking: Import skeleton() from current location
author Kim Alvefur <zash@zash.se>
date Mon, 29 Apr 2019 02:40:39 +0200
parent 6373:84e7e418c29a
child 10226:77f900bbbf25
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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 "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 module:hook("s2s-check-certificate", function(event)
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8 local session, host, cert = event.session, event.host, event.cert;
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9 local conn = session.conn:socket();
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10 local log = session.log or log;
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11
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12 if not cert then
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13 log("warn", "No certificate provided by %s", host or "unknown host");
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14 return;
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15 end
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16
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17 local chain_valid, errors;
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18 if conn.getpeerverification then
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19 chain_valid, errors = conn:getpeerverification();
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20 elseif conn.getpeerchainvalid then -- COMPAT mw/luasec-hg
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21 chain_valid, errors = conn:getpeerchainvalid();
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22 errors = (not chain_valid) and { { errors } } or nil;
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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 else
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34 log("debug", "certificate chain validation result: valid");
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35 session.cert_chain_status = "valid";
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36
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37 -- We'll go ahead and verify the asserted identity if the
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38 -- connecting server specified one.
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39 if host then
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40 if cert_verify_identity(host, "xmpp-server", cert) then
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41 session.cert_identity_status = "valid"
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42 else
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43 session.cert_identity_status = "invalid"
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44 end
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45 log("debug", "certificate identity validation result: %s", session.cert_identity_status);
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46 end
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47 end
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48 end, 509);
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49