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plugins/mod_s2s_auth_certs.lua @ 6319:92d009af6eba

mod_s2s_auth_certs: Split PKIX based certificate checking from mod_s2s into new plugin
author Kim Alvefur <zash@zash.se>
date Fri, 25 Jul 2014 20:41:54 +0200
child 6320:17344d25a0f6
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6319
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
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11 if cert then
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12 local chain_valid, errors;
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13 if conn.getpeerverification then
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14 chain_valid, errors = conn:getpeerverification();
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15 elseif conn.getpeerchainvalid then -- COMPAT mw/luasec-hg
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16 chain_valid, errors = conn:getpeerchainvalid();
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17 errors = (not chain_valid) and { { errors } } or nil;
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18 else
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19 chain_valid, errors = false, { { "Chain verification not supported by this version of LuaSec" } };
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20 end
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21 -- Is there any interest in printing out all/the number of errors here?
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22 if not chain_valid then
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23 (session.log or log)("debug", "certificate chain validation result: invalid");
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24 for depth, t in pairs(errors or NULL) do
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25 (session.log or log)("debug", "certificate error(s) at depth %d: %s", depth-1, table.concat(t, ", "))
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26 end
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27 session.cert_chain_status = "invalid";
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28 else
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29 (session.log or log)("debug", "certificate chain validation result: valid");
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30 session.cert_chain_status = "valid";
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31
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32 -- We'll go ahead and verify the asserted identity if the
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33 -- connecting server specified one.
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34 if host then
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35 if cert_verify_identity(host, "xmpp-server", cert) then
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36 session.cert_identity_status = "valid"
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37 else
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38 session.cert_identity_status = "invalid"
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39 end
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40 (session.log or log)("debug", "certificate identity validation result: %s", session.cert_identity_status);
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41 end
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42 end
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43 end
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44 end, 509);
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45